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CN-122013686-A - Bidirectional adjusting method for support height

CN122013686ACN 122013686 ACN122013686 ACN 122013686ACN-122013686-A

Abstract

The invention provides a bidirectional regulating method of a support height, which is used for a liquid-solid coupled type adjustable support, and comprises a lower seat plate and a height regulating base plate, wherein an annular groove is formed on the height regulating base plate, the lower seat plate is at least partially arranged in the annular groove, a relatively sealed height regulating space is formed between the height regulating base plate and the lower seat plate, the height regulating base plate is connected with a height regulating system, the height regulating system comprises a filtering device, the height regulating method comprises the steps of S1, determining the height regulating type of the support to determine the type of a medium, S2, starting the height regulating system, conveying liquid-solid mixed liquid into the height regulating space when the height is required to be increased, removing the filtering device when the height is required to be reduced, and conveying flushing liquid into the height regulating space, and S3, closing the height regulating system after the height of the height regulating system is reached. According to the adjusting method provided by the invention, through the transportation of liquid-solid mixture or flushing liquid, the stepless adjustment of the heights of the support in different directions of the support height is realized, and the flexibility of the support height adjustment is obviously improved.

Inventors

  • GU HAILONG
  • ZHENG PENGFEI
  • HU YUANHONG
  • SONG JIANPING
  • ZENG XIANPING

Assignees

  • 中船双瑞(洛阳)特种装备股份有限公司

Dates

Publication Date
20260512
Application Date
20260403

Claims (10)

  1. 1. A bidirectional adjustment method for the height of a support, characterized in that the support comprises an upper seat plate (1), a middle seat plate, a lower seat plate (4) and a height adjustment base plate (5), wherein the upper seat plate (1) is arranged on the upper side of the middle seat plate, the middle seat plate is arranged on the upper side of the lower seat plate (4), an annular groove is formed on the height adjustment base plate (5), the lower seat plate (4) is at least partially arranged in the annular groove, a relatively sealed height adjustment space is formed between the height adjustment base plate (5) and the lower seat plate (4), the height adjustment base plate (5) is connected with a height adjustment system, the height adjustment system comprises a filtering device (7), and the height adjustment method comprises: Step S1, determining the type of height adjustment of a support, and determining the type of media conveyed into a height adjustment system according to the type of height adjustment of the support; Step S2, starting a height-adjusting system, conveying liquid-solid mixed liquid into a height-adjusting space when the height of a support needs to be increased so as to increase the amount of solid particles deposited in the liquid-solid mixed liquid; and S3, closing the heightening system after the target height is reached.
  2. 2. The method of bi-directional adjustment of the stand height according to claim 1, wherein in step S1, determining the type of medium to be fed into the leveling system according to the type of stand height adjustment comprises: When the height of the support needs to be increased, the type of the medium is liquid-solid mixed liquid; When the height of the support needs to be reduced, the medium type is flushing liquid.
  3. 3. A method of bi-directional adjustment of the height of a support according to claim 1, characterized in that the lifting system comprises a lifting unit which is able to lift the lower seat plate (4) when lifting, and in step S2 the lifting unit is used to lift the lower seat plate (4) before the liquid-solid mixture or flushing liquid is fed into the lifting space.
  4. 4. A bidirectional adjusting method for the height of a support as claimed in claim 3, wherein the jacking unit comprises a jacking supporting part and a jacking member, the jacking supporting part and the jacking member are arranged between the outer peripheral surface of the lower seat plate (4) and the top surface of the height-adjusting base plate (5), and the jacking member can stretch and retract relative to the jacking supporting part so as to support the jacking supporting part to drive the lower seat plate (4) to ascend or descend.
  5. 5. A method of bi-directional adjustment of the height of a support as claimed in claim 3, characterized in that the height adjustment system further comprises a liquid-solid filling unit for delivering a liquid-solid mixture or flushing liquid into the height adjustment space when the jacking unit lifts the lower seat plate (4) and for lowering the lower seat plate (4) after the solid particles are deposited or flushed, so that the lower seat plate (4) compacts the deposited solid particles.
  6. 6. A method of bi-directional adjustment of the height of a support according to claim 5, characterized in that the liquid-solid filling unit comprises a storage tank (9), a high pressure pump (13) and a one-way valve means (11), the input of the high pressure pump (13) being in communication with the storage tank (9), the output of the high pressure pump (13) being in communication with the elevation space via a medium conduit inlet (14), the one-way valve means (11) being arranged at the medium conduit inlet for preventing liquid back flow in the elevation space, the filter means (7) being detachably mounted at the medium outlet of the elevation base plate (5) for retaining solid particles and allowing liquid to drain during the elevation process, the filter means (7) being connected to the storage tank (9) via a medium conduit outlet pipe (8).
  7. 7. A method of bi-directional adjustment of the height of a support according to claim 1, characterized in that a circumferential sealing means (6) is provided between the lower seat plate (4) and the raised seat plate (5) for preventing leakage of liquid-solid mixture or flushing liquid from the fit gap between the lower seat plate (4) and the raised seat plate (5) when the liquid-solid filling unit is in operation.
  8. 8. The method of bi-directional adjustment of stand height according to claim 1, wherein the solid particles in the liquid-solid mixture are solid steel sand or solid zirconia ceramic microbeads, the liquid in the liquid-solid mixture is a mixture based on a polyalphaolefin blend, wherein the volume ratio of the solid particles is 45% -55%, the polyalphaolefin blend has a kinematic viscosity of 80-120mm 2 /s at 40 ℃, a viscosity index >140, and a pour point < "40 ℃.
  9. 9. The method of bi-directional adjustment of stand height of claim 8, wherein said solid particles comprise a plurality of particles of different particle sizes.
  10. 10. The method for bidirectional adjustment of stand height according to claim 9, wherein the solid particles have a coarse particle size of 300-450 μm, a mass ratio of 45-65%, a medium particle size of 150-250 μm, a mass ratio of 20-30%, a fine particle size of 45-75 μm, a mass ratio of 15-25%, and a sphericity of 0.85 or more and a mohs hardness of 7 or more.

Description

Bidirectional adjusting method for support height Technical Field The invention relates to the technical field of bridge structures or buildings, in particular to a bidirectional adjusting method for the height of a support. Background With the development of economy, people have increasingly higher requirements on travel quality, and more comfortable traffic modes with higher speeds are increasingly popular. Both highway, railway and urban rail transit have crossed from the original low-speed times into the present high-speed times, and the appearance of highways and high-speed railways brings great convenience for people's travel. The expressway and the high-speed railway are connected in the north-south aspect, have high speed and large span, can reach thousands of kilometers, have large temperature change in passing areas and have complex geological conditions. In particular, the smoothness requirements of the high-speed railway on the foundation and the bridge are more strict. Especially, when the ballastless track is adopted by the passenger special line railway, the requirement on the line flatness is more strict, besides the necessary height adjustment of the seamless line on the bridge through the track pad and the fastener, the form of the height-adjusting support is easy, convenient, practical and economical to study, and the requirement of the ballastless track on the passenger special line railway bridge is met by properly adjusting the height of the existing support. At present, common heightening support schemes at home and abroad comprise 4 modes of backing plate heightening, spiral heightening, wedge heightening and pressure injection filling body heightening. The screw-type height-adjusting structure is not suitable for occasions with higher bearing capacity requirements, has high corrosion resistance requirements on internal threads, is difficult to replace after rusting, is large in stress of a bolt pushing the wedge block in the wedge block height adjustment process, cannot be too large in gradient of the wedge block, is limited in height adjustment quantity, is difficult to actually construct in a height-adjusting mode of the pressure filling body, is easy to leak due to long-term pressure of the filling body, is greatly influenced by temperature, and is difficult to adjust in later period. The Chinese patent with the publication number of CN212128829U discloses an ultrahigh pressure height-adjusting pressure measuring support, wherein an annular copper ring is arranged at the upper part of a longitudinal injection hole, and when filling materials are injected, the annular copper ring is jacked up firstly, then the annular copper ring acts on the upper part of a rubber sealing ring, so that the problem that the rubber sealing ring is easily damaged and loses efficacy due to the fact that the local part of the rubber sealing ring is subjected to larger pressure is avoided, the longitudinal injection hole is in a funnel shape, and the lower pressure is higher than the upper pressure when the filling materials enter the longitudinal injection hole due to the funnel-shaped structure, so that the problem that the filling materials are easy to flow back is effectively avoided. The patent is characterized in that the support is jacked up after the injected liquid is solidified, so that the purpose of height adjustment is achieved. However, the patent can only realize one-way height adjustment, each injection hole is blocked by solidified materials after injection, the injection hole can only be used once, a plurality of injection holes are required to be arranged for multiple height adjustment, and the use times are limited. In addition, the support cannot be adjusted down, only the support can be replaced when the adjustment is needed, time and effort are wasted. Disclosure of Invention The invention solves the problems that in the prior art, the existing injection height-adjusting support can only be adjusted to be high, the height-adjusting times are limited, and the free adjustment of the height of the support cannot be realized. The invention discloses a bidirectional regulating method of a support height, which is used for a liquid-solid coupled type adjustable support, the support comprises an upper seat plate, a middle seat plate, a lower seat plate and a height regulating base plate, the upper seat plate is arranged on the upper side of the middle seat plate, the middle seat plate is arranged on the upper side of the lower seat plate, an annular groove is formed on the height regulating base plate, the lower seat plate is at least partially arranged in the annular groove, a relatively sealed height regulating space is formed between the height regulating base plate and the lower seat plate, the height regulating base plate is connected with a height regulating system, the height regulating system comprises a filtering device, and the height regulating method comprises the following s