CN122000801A - A multi-directional adjustable sliding support structure and support method - Google Patents

Abstract

The invention discloses a multidirectional adjustable sliding support structure and a supporting method, wherein the multidirectional adjustable sliding support structure comprises an upper hoop connecting part, a middle sliding limiting part and a lower strut 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 limiting blocks, wherein a plurality of limiting blocks are enclosed to form a limiting space, the fixing plate is accommodated in the limiting space and is capable of sliding in the limiting space in a self-adaptive manner along the horizontal direction, the lower support part comprises a support, a full-thread double-end screw rod and a support flat plate, and the whole structure height is adjusted and fixed by adjusting nuts on the double-end full-thread screw rod. The invention can reduce the influence of environment, foundation settlement and installation errors on the combined electrical appliance, improve the product quality, effectively reduce the hidden danger of air leakage and meet the requirement of long-time safe and reliable operation of the combined electrical appliance.

Description

Multidirectional adjustable sliding support structure and support method

Technical Field

The invention relates to the technical field of electrical equipment, in particular to a multidirectional adjustable sliding support structure and a support method.

Background

The gas-insulated metal-enclosed combined electric appliance (GIS) is characterized by that several high-voltage electric appliances of circuit breaker, isolating switch, grounding switch, bus bar and mutual inductor are integrated and sealed in the grounded metal shell, and charged with a certain pressureThe complete switch equipment formed by taking gas as an insulating medium has the advantages of large power transmission capacity, small occupied area, simple maintenance, long service life and the like, and each assembled combined electrical appliance is called as a space.

In conventional GIS installation, bolts are typically used to make the rigid connection between the spaced buss and the buss, and between the buss support and the mounting support. If the GIS interval is longer, the thermal expansion and contraction deformation of the bus barrel caused by the change of the external temperature can be large, and the generated huge stress can cause the extrusion deformation of the bus barrel, so that the reliable operation of equipment is affected, and equipment faults are easily caused. So that it is supported between the spaced bus bar barrels and the bus bar barrels. The original support can only be adjusted up and down by using the double-end full-wire screw rod in the installation process, the height can not be adjusted by itself after being fixed according to the design, and the original support can not be changed left and right, front and back and up and down along with the settlement deformation of a foundation due to thermal expansion and cold contraction of a product, and the bus barrel shell is affected after a long time, so that the hidden danger of air leakage is caused.

In summary, the prior art has the disadvantage that the existing adjusting function is limited to an initial height calibration at the installation stage, and the support structure forms a rigid connection once the installation is completed and secured by the nut lock. In the subsequent long-term operation process of the equipment, when the bus cylinder generates deformation stress due to factors such as thermal expansion and contraction, uneven settlement of a foundation, vibration of the equipment and the like, the existing rigid support cannot adaptively deform or slide along with the bus cylinder, so that the compensation capability is lost, the deformation stress accumulated for a long time is easy to cause the extrusion deformation of the bus cylinder, and the hidden danger of air leakage exists.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention provides the multidirectional adjustable sliding support structure and the supporting method, which can weaken the influence of environment, foundation settlement and installation errors on the combined electrical appliance, improve the product quality, effectively reduce the hidden danger of air leakage and meet the requirement of long-time safe and reliable operation of the combined electrical appliance.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

In a first aspect, the present invention provides a multi-directionally adjustable slideable support structure comprising:

An upper hoop connecting part, a middle sliding limiting part and a lower strut part which are sequentially connected from top to bottom;

the upper hoop connecting part is used for encircling and connecting the GIS bus cylinder;

The middle sliding limiting part comprises a fixed plate, a fixed plate support fixed at the upper part of the fixed plate, a sliding block arranged at the bottom of the fixed plate, a stainless steel flat plate in contact with the sliding block and a limiting block arranged on the stainless steel flat plate, wherein a plurality of limiting blocks are enclosed to form a limiting space, the fixed plate is accommodated in the limiting space, the fixed plate performs self-adaptive sliding in the limiting space along the horizontal direction, and the limiting block is used for limiting and blocking the fixed plate when the sliding exceeds a preset range;

The lower support column part comprises a support, a full-thread double-head screw rod and a support flat plate, and the whole structure height is adjusted and fixed by adjusting nuts on the double-head full-thread screw rod.

As a further technical scheme, upper portion staple bolt connecting portion includes arc band steel staple bolt, arc support and backup pad, and wherein arc band steel staple bolt is connected with the backup pad.

As a further technical scheme, the inner side of the arc-shaped flat steel hoop is provided with a rubber plate for preventing the bus bar barrel from being scratched, the supporting plate is provided with a threaded hole, and the arc-shaped flat steel hoop is connected with the supporting plate through a full-wire screw rod and the threaded hole.

As a further technical scheme, the upper part of the arc-shaped support is used for bearing the GIS bus cylinder, and the lower part of the arc-shaped support is connected with the fixed plate support of the middle sliding limiting part.

As a further technical scheme, the trapezoid groove is formed in the bottom of the fixing plate, and the size of the trapezoid groove is slightly smaller than that of the sliding block, so that the sliding block and the fixing plate are in interference fit, the sliding block is firmly clamped, and the sliding block is prevented from falling off.

As a further technical scheme, the limiting blocks are arranged in two, the limiting blocks are provided with cavities, the two limiting blocks are oppositely arranged on two sides of the stainless steel plate, and the cavities of the two limiting blocks are opposite and jointly form a limiting space.

As a further technical scheme, the limiting block, the stainless steel flat plate and the supporting flat plate are arranged in a stacked mode from top to bottom, through holes are formed in the limiting block, the stainless steel flat plate and the supporting flat plate, and the limiting block, the stainless steel flat plate and the supporting flat plate are fastened by utilizing the full-thread double-head screw rod to penetrate through the through holes and match with the first nut, the first spring washer and the first flat pad.

As a further technical scheme, the lower end of the full-wire double-head screw rod is matched with a second nut, a second spring washer and a second flat pad to be fastened with the support of the lower support column part.

As a further technical scheme, a first adjusting space is reserved between a first nut below the supporting plate and a second nut above the supporting plate, and a second adjusting space is reserved below the second nut at the lowest end of the full-wire double-head screw.

In a second aspect, the present invention provides a multidirectional adjustable sliding support method, based on the first aspect, the support method includes:

When the GIS bus cylinder is deformed, the upper hoop connecting part is transferred to a fixing plate of a middle sliding limiting part, the fixing plate is driven to adaptively slide along the horizontal direction in a limiting space formed by encircling limiting blocks, and a sliding block at the bottom of the fixing plate is driven to slide on a stainless steel flat plate.

One or more of the technical schemes of the invention has the following beneficial effects:

According to the invention, through the design of the middle sliding limiting part (comprising the fixed plate, the sliding block, the stainless steel flat plate, the limiting block and the limiting space), the support structure has a preset degree of freedom in the horizontal plane (front-back direction and left-right direction). When the GIS bus cylinder generates horizontal deformation due to expansion caused by heat and contraction caused by cold, the deformation force can push the upper hoop connecting part and the fixed plate connected with the upper hoop connecting part, so that the fixed plate slides in the limiting space, and stress is released through the low-friction sliding pair between the sliding block and the stainless steel flat plate. The deformation in the horizontal direction is effectively compensated, and the accumulation of deformation stress at the connection point of the bus bar barrel shell and the rigid support is avoided, so that the risk of extrusion deformation and air leakage of the bus bar barrel caused by thermal stress is remarkably reduced.

The limiting block is enclosed to form a limiting space, and the sliding range of the fixing plate is accurately limited while the fixing plate is allowed to slide in a self-adaptive mode. When the sliding amount exceeds a safe preset range (such as overlarge deformation or accidental displacement), the limiting block can timely block the fixing plate to prevent the fixing plate from sliding out of the supporting surface. The support structure can not lose the supporting effect on the bus tube in the process of compensating deformation, and the structural stability and the operation safety of the equipment under various working conditions are ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.

FIG. 1 is an overall block diagram of a multidirectional adjustable slidable support structure of the present invention;

FIG. 2 is a schematic view of a middle sliding limiting part of the present invention;

FIG. 3 is a schematic view of the lower leg portion structure of the present invention;

FIG. 4 is a schematic view showing the left and right sliding of the fixing plate of the present invention;

FIG. 5 is a schematic view showing the back and forth sliding of the fixing plate of the present invention;

FIG. 6 is a schematic diagram of the overall structure of the present invention in an up-down adjustment;

FIG. 7 is a schematic representation of the tuning volume of the present invention;

FIG. 8 is a schematic view of a support plate of the present invention;

FIG. 9 is a schematic view of the installation of the stop block, stainless steel plate and support plate of the present invention;

FIG. 10 is a schematic view of the slider of the present invention after it is mounted to a fixed plate;

FIG. 11 is a schematic view of the stopper, stainless steel plate and support plate of the present invention after installation;

Wherein, 1 is a lower pillar part, 2 is a middle sliding limit part, and 3 is an upper hoop connecting part;

1-1 of a support, 1-2 of a full-wire double-head screw, 1-3 of a support flat plate, 2-1 of a fixed plate, 2-2 of a limit block, 2-3 of a sliding block, 2-4 of a fixed plate support, 2-5 of a stainless steel flat plate, 2-6 of a first adjusting space, 2-7 of a second adjusting space and 2-8 of a fastening component.

Detailed Description

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

Example 1

In this embodiment, a multi-direction adjustable sliding support structure is provided, as shown in fig. 1, where the support structure integrally includes three main functional modules, respectively:

The supporting structure of the embodiment is used for supporting a bus barrel of a gas insulated metal enclosed switchgear (GIS), can realize accurate adjustment during installation, and can adaptively compensate multidirectional deformation of the bus barrel due to temperature change and foundation settlement during equipment operation.

In this embodiment, the upper hoop connection portion 3 is used for encircling and connecting with a GIS bus bar barrel, and includes an arc flat steel hoop, an arc support and a support plate.

The arc-shaped flat steel hoop is formed by bending flat steel with the thickness of 3mm and the width of 50mm, and is welded with a full-wire screw rod. The rubber plate is attached to the inner side surface of the arc flat steel, so that the surface of the shell is prevented from being scratched when the bus tube is surrounded, and the flat steel has certain flexibility and can be better attached to the arc profile of the bus tube.

Be equipped with the screw hole in the backup pad, arc band steel staple bolt passes through this screw hole of welded full-wire screw rod screw in, realizes being connected with the backup pad. The upper part of the arc-shaped support is used for bearing the GIS bus cylinder shell, and the lower part of the arc-shaped support is connected with the fixed plate supports 2-4 of the middle sliding limiting part 2, so that the top of the whole support structure is connected with the bus cylinder shell.

As shown in fig. 2, the middle slide restricting portion 2 is a core member that realizes the horizontal direction adaptive sliding. The device comprises a fixed plate 2-1, a fixed plate support 2-4 fixed on the upper part of the fixed plate, a sliding block 2-3 arranged at the bottom of the fixed plate, a stainless steel flat plate 2-5 contacted with the sliding block and a limiting block 2-2 arranged on the stainless steel flat plate.

Wherein, two trapezoidal grooves are arranged at the bottom of the fixed plate 2-1, and the size of each trapezoidal groove is slightly smaller than that of the sliding block 2-3, so that the sliding block 2-3 and the fixed plate 2-1 are in interference fit, and the sliding block 2-3 is firmly clamped and prevented from falling off. The sliding block 2-3 is made of a composite material of polytetrafluoroethylene and 0.15% of molybdenum disulfide, and has good plasticity and lubricity. The stainless steel plates 2-5 have a high finish surface. The sliding block 2-3 is arranged in the trapezoid groove of the fixed plate 2-1 and is contacted with the upper surface of the stainless steel flat plate 2-5.

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 the size of 320mm long, 115mm wide and 55mm high. Two through holes with the diameter of 22mm are drilled on one side of the hollow cavity, and cavities with the length of 300mm, the width of 55mm and the height of 30mm are machined on the other side of the hollow cavity. The two limiting blocks 2-2 are oppositely arranged and are arranged above the left side and the right side of the stainless steel flat plate 2-5, and the cavities of the limiting blocks are opposite to each other to form a limiting space with the inner dimension of 415mm long, 300mm wide and 30mm high.

In this embodiment, the bottom plate of the fixing plate 2-1 has a size of 375mm long, 260mm wide and 20mm high, and the size is smaller than the limit space, so that 20mm is left between the fixing plate 2-1 and the wall surface of the limit space in the length and width directions, 10mm free sliding space is left in the height direction, and the limiting block is used for limiting and blocking the fixing plate when the sliding exceeds the preset range.

As shown in fig. 3, the lower column part 1 is a basic load-bearing and height-adjusting unit of the structure. The device comprises a support 1-1, a full-thread double-head screw 1-2 and a support flat plate 1-3.

The support 1-1 is a strut made of Q235 steel, the support flat plate 1-3 is made of Q235 steel, the size of the support flat plate is 535mm long, 320mm wide and 20mm high, and through holes with the diameter of 24mm are drilled at four corners. The whole-thread double-head screw 1-2 is of the specification of M20×260.

In the embodiment, the limiting block 2-2, the stainless steel flat plate 2-3 and the supporting flat plate 1-3-1 are stacked from top to bottom, and as the limiting block, the stainless steel flat plate and the supporting flat plate are provided with through holes, the through holes at the corresponding positions of the limiting block 2-2 are sequentially penetrated by the full-wire double-headed screw 1-2, and then are fastened above the limiting block 2-2 by the fastening component 2-8 (the first nut, the first spring washer and the first flat pad).

The middle of the full-wire double-head screw 1-2 is also provided with a first nut and a first flat pad so as to support the screw (namely, the first nut and the first flat pad are arranged below the supporting flat plate), then the stainless steel flat plate and the limiting block are sequentially stacked upwards, and finally the screw is fastened by the first nut, the first spring washer and the first flat pad so as to prevent the screw from loosening due to vibration in long-term operation.

The lower end of the full-wire double-head screw rod is matched with a second nut, a second spring washer and a second flat pad to be fastened with the support of the lower support column part. And a first adjusting space (namely, an adjusting space of 40 mm) is reserved between the first nut below the supporting flat plate and the second nut above the supporting flat plate. Meanwhile, a second adjusting space (namely, an adjusting space of 20 mm) is reserved below the second nut at the lowest end of the full-wire double-head screw 2-1. The two adjustment spaces allow the support height to be readjusted during installation and operation by loosening the corresponding nuts, and then re-tightening to compensate for vertical variations.

Example two

The embodiment provides a multidirectional adjustable sliding support method, which is based on the multidirectional adjustable sliding support structure provided in the first embodiment, and specifically comprises the following steps:

In the installation and positioning stage, the arc-shaped flat steel anchor ear of the upper anchor ear connecting part 3 is firstly embraced at a preset supporting position of the GIS bus tube. Next, the nuts on the full-wire double-headed screws of the lower column section 1 are adjusted. The method comprises the following steps:

As shown in FIG. 7, the first nut below the support plate and the second nut above the support plate are loosened, the height of the whole support structure is adjusted by utilizing a first adjusting space (40 mm space) reserved between the first nut and the second nut to reach the design elevation, and meanwhile, a second adjusting space (20 mm space) reserved below the second nut at the lowest end of the full-wire double-head screw 2-1 can be matched and adjusted to meet the fine requirement of the actual installation height. After the adjustment is in place, all relevant nuts are locked, and the rigid positioning and mounting of the supporting structure are completed, so that the supporting structure is firmly supported below the bus barrel.

In the operation self-adaptation stage, when the GIS bus cylinder deforms due to the change of the ambient temperature (thermal expansion and contraction) or the uneven settlement of the foundation in operation, the method can automatically compensate:

As shown in fig. 4 and 5, the deformation compensation in the horizontal direction (front, back, left and right) is that the deformation force is transmitted to the fixing plate support and fixing plate through the upper hoop connecting part 3, and the deformation force drives the fixing plate to adaptively slide along the horizontal direction in a limit space which is formed by encircling two limit blocks and has the length of 415mm, the width of 300mm and the height of 30 mm. In the sliding process, the sliding block at the bottom of the fixed plate slides on the smooth surface of the stainless steel flat plate, and the sliding smoothness is ensured by low friction force, so that the horizontal stress generated by deformation is effectively released.

When the sliding quantity reaches the limit space boundary (namely, the reserved 20mm sliding space is used up), the limiting block can block and interfere the fixed plate, so that the fixed plate is prevented from sliding out of the supporting surface to lose supporting effect, and the supporting safety is ensured.

As shown in FIG. 6, the vertical deformation compensation is performed when the bus bar barrel is changed in the vertical direction due to foundation settlement or the like, and maintenance adjustment is performed. The operator loosens the relevant nuts of the lower pillar portion 1 (i.e. the nuts related to the first and second adjustment spaces), readjusts the height of the supporting structure according to the actual settlement amount by using the reserved adjustment space, and locks the nuts again after the adjustment is completed, thereby compensating for the deformation in the vertical direction.

Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A multi-directional adjustable sliding support structure, characterized in that it comprises: 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 a rubber plate is provided on the inner side of the arc-shaped flat steel clamp 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 of the middle sliding limit part. 5. The multi-directional adjustable sliding support structure as described in claim 1, characterized in that 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. 6. The multi-directional adjustable sliding support structure as described in claim 1, characterized in that two limiting blocks are provided, 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 the limiting block, stainless steel plate and support plate are provided with through holes, and the limiting block, stainless steel plate and support plate are fastened by passing through the through holes with a full-thread 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 all-thread double-ended screw is fastened to the support of the lower support column by cooperating with the second nut, the second spring washer, the second flat washer, and the support of the lower support column. 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 lowest end of the fully threaded 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 it comprises: 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.