CN117249809A - Railway bridge track elevation transfer indicating device and construction method thereof - Google Patents
Railway bridge track elevation transfer indicating device and construction method thereof Download PDFInfo
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- CN117249809A CN117249809A CN202311539087.5A CN202311539087A CN117249809A CN 117249809 A CN117249809 A CN 117249809A CN 202311539087 A CN202311539087 A CN 202311539087A CN 117249809 A CN117249809 A CN 117249809A
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- 238000012546 transfer Methods 0.000 title claims abstract description 16
- 238000010276 construction Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 128
- 230000008859 change Effects 0.000 claims abstract description 31
- 230000001105 regulatory effect Effects 0.000 claims abstract description 18
- 230000001276 controlling effect Effects 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 230000008602 contraction Effects 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000009792 diffusion process Methods 0.000 claims description 12
- 239000013589 supplement Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
- G01C5/04—Hydrostatic levelling, i.e. by flexibly interconnected liquid containers at separated points
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Abstract
The invention discloses a railway bridge track elevation transfer indicating device, which comprises two water storage tanks; leveling devices respectively arranged below the two water storage barrels; a measuring device connected between two of the drain pipes; the switch valve is used for controlling the on-off of water flow in the drain pipe; according to the invention, through the principle that the two water storage barrels are communicated with each other by water, the two water storage barrels are placed on two adjacent bridges through the leveling device, the measuring device is placed at the bridge pier from the expansion joint between the two adjacent bridges, when the bridge to be regulated ascends, the water in the water storage barrel at the bridge to be regulated flows into the other water storage barrel, the water level of the water surface is leveled again, the movable plug is pushed to move in the measuring section in the process, the moving distance of the movable plug can be used for acquiring the moving water volume, and therefore, the liquid level height change in the water storage barrel is acquired, and the moving distance of the bridge to be regulated is acquired; the purpose of directly obtaining the bridge deck elevation change at the bridge pier is achieved, and the construction is convenient.
Description
Technical Field
The invention relates to the field of railway bridge track construction, in particular to a railway bridge track elevation transfer indicating device and a construction method thereof.
Background
When the railway bridge is constructed, steel rails are paved on the bridge deck after the bridge is built, and after the steel rails are paved, the elevation of the steel rails is checked, and when the steel rail elevation is unqualified, the steel rails and the foundation for installing the steel rails are fixed and cannot be adjusted, so that the elevation of the bridge deck needs to be adjusted. The spherical support of the beam to be adjusted is required to be adjusted above the bridge pier, and when the spherical support is adjusted, a worker needs to walk from the inside of the box beam to the corresponding bridge pier, and goes down to the bridge pier to adjust the spherical support of the beam to be adjusted. When the spherical support is adjusted, the bridge is jacked up by the jack to be adjusted, but the spherical support cannot be adjusted in place at one time, and the height of the bridge after the bridge is completely supported after the adjustment cannot be judged because the weight of the bridge is large, so that the bridge is required to be adjusted once, the elevation difference is measured before and after the bridge is borne, the bridge is jacked up to be adjusted continuously until the expected adjustment height difference is not reached, and the bridge is adjusted again until the elevation difference reaches the expected value after the jack is put down the bridge.
Because the staff is very inconvenient to measure the elevation change each time from the bridge pier to the bridge deck, and a great amount of time is consumed, the railway bridge track elevation transfer indicating device is urgently needed, and the elevation change value of the bridge deck at the bridge pier can be observed.
Disclosure of Invention
The invention aims to provide a railway bridge track elevation transfer indicating device and a construction method thereof, which solve the problem that when the bridge deck elevation is adjusted from a bridge pier, the bridge deck elevation change is measured for multiple times, and the bridge deck are required to be returned for multiple times, so that the construction is very inconvenient.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a railway bridge track elevation transfer indicating device, which comprises
Two water storage tanks; the water storage barrel is internally provided with a water storage space, the water storage space comprises a straight barrel part and a drainage part, the cross sections of the straight barrel part are the same, and the cross section of the drainage part is gradually reduced from top to bottom; a drain pipe is arranged outside the water storage barrel and is communicated with the water storage space;
leveling devices respectively arranged below the two water storage barrels;
a measuring device connected between two of the drain pipes; the measuring device comprises a contraction section, a measuring section and a diffusion section, wherein the contraction section is communicated with a drain pipe of one water storage barrel, and the diffusion section is communicated with a drain pipe of the other water storage barrel; a movable plug is arranged in the measuring section, scales are marked outside the measuring section, and a pointer is marked on the movable plug; and
the switch valve is used for controlling the on-off of water flow in the drain pipe; the switch valve is arranged on a drain pipe communicated with the contraction section.
Further, the cross-sectional shape of the straight tube portion is circular.
Still further, the longitudinal section of the measuring section is circular.
Still further, the diameter of the cross section of the straight tube portion is 2-5 times the diameter of the longitudinal section of the measuring section.
Still further, the leveling device comprises a plurality of supporting legs, adjusting bolts and level gauges, wherein the number of the supporting legs, the number of the adjusting bolts and the number of the level gauges are the same and are in one-to-one correspondence; the adjusting bolt is connected to the supporting leg in a threaded mode, and the level gauge is fixed above the supporting leg.
Still further, each of the adjusting bolts is provided with a fixing nut.
Still further, the number of the support legs, the adjusting bolts and the level meter included in one leveling device is four.
A construction method using the railway bridge track elevation transfer indicating device according to any one of the above,
step 1: firstly, unscrewing screw spikes of fixed steel rails within 5-8 meters at two sides of a beam end expansion joint of a railway bridge to be adjusted by more than 10 mm;
step 2: placing the water storage barrel connected with the contraction section at the end of the beam to be adjusted, and placing the water storage barrel connected with the diffusion section at the end of the other adjacent beam;
step 3: adjusting leveling devices below the two water storage barrels to enable the two water storage barrels to be in a horizontal state;
step 4: opening a switch valve to supplement water into the two water storage tanks, so that the pointer indicates the 0 position on the scale;
step 5: closing the switch valve, and sending the measuring device to the bridge pier from the expansion joint;
step 6: jacking up the end of the beam to be regulated by using a jack, regulating the spherical support, then removing the pressure of the jack, opening a switch valve, and measuring and calculating the elevation change of the end of the bridge to be regulated according to the moving distance of the pointer;
step 7: repeating the step 6 until the required elevation change is achieved;
step 8: and (5) screwing the unscrewed threaded spike again.
Further, the elevation change height is h, the pointer moving distance is a, the diameter of the straight cylinder part is D, and the diameter of the measuring section is D; the height h of the elevation change is calculated as follows:
。
still further, in step 1: firstly, screw spikes of fixed steel rails within 6 meters at two sides of a beam end expansion joint to be adjusted of a railway bridge are unscrewed by 12mm.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the invention, through the principle that the two water storage barrels are communicated with each other by water, the two water storage barrels are placed on two adjacent bridges through the leveling device, the measuring device is placed at the bridge pier from the expansion joint between the two adjacent bridges, when the bridge to be regulated ascends, the water in the water storage barrel at the bridge to be regulated flows into the other water storage barrel, the water level of the water surface is leveled again, the movable plug is pushed to move in the measuring section in the process, the moving distance of the movable plug can be used for acquiring the moving water volume, and therefore, the liquid level height change in the water storage barrel is acquired, and the moving distance of the bridge to be regulated is acquired; the purpose of directly obtaining the bridge deck elevation change at the bridge pier is achieved, time and labor are saved, and construction is facilitated; the railway bridge track elevation transfer indicating device disclosed by the invention has the advantages that before construction and use, the screw spikes of the fixed steel rail in 5-8 m at the two sides of the expansion joint of the beam end to be adjusted are unscrewed by more than 10mm, so that the damage to the steel rail when the beam to be adjusted moves upwards or the condition that the beam to be adjusted cannot move upwards due to no movable space of the fixed steel rail is avoided.
Drawings
The invention is further described with reference to the following description of the drawings.
FIG. 1 is a schematic diagram of a railway bridge track elevation transfer indicating device;
FIG. 2 is an enlarged cross-sectional view taken at "A" in FIG. 1;
FIG. 3 is a front view of the view "A" of FIG. 1;
reference numerals illustrate: 1. a water storage barrel, 101 and a water storage space; 1011. a straight tube portion; 1012. a water draining part; 102. a drain pipe;
2. leveling means; 201. a support leg; 202. an adjusting bolt; 203. a level gauge; 204. a fixing nut;
3. a measuring device; 301. a constriction section; 302. a measurement section; 303. a diffusion section; 304. moving the plug; 305. a scale; 306. a pointer;
4. the valve is opened and closed.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, one specific embodiment of the railway bridge track elevation transfer indicating device comprises two identical water storage barrels 1, wherein a water storage space 101 is arranged in each water storage barrel 1, each water storage space 101 comprises a straight barrel portion 1011 and a drainage portion 1012, cross sections of the straight barrel portions 1011 are identical, and the volume of the straight barrel portions 1011 in a section of height is convenient to calculate. The cross section of the drain portion 1012 gradually decreases from top to bottom so that water within the drain portion 1012 can be easily collected to the bottom of the drain portion 1012. The outside of the water storage barrel 1 is provided with a drain pipe 102, the drain pipe 102 is communicated with the water storage space 101, the drain pipe 102 is a hose which can spiral like a rope and pass through an expansion joint to enter the upper part of a pier, and the drain pipe 102 is communicated with the bottom of the water drain part 1012, so that the drain pipe 102 and the water storage barrel 1 are communicated into a whole. The leveling device 2 is arranged below the two water storage barrels 1, the two water storage barrels 1 can be in a horizontal state through the leveling device 2, the horizontal plane in the leveling device 2 is guaranteed to be parallel to the cross section in the water storage barrel 1, and the water volume change in the water storage barrel 1 is calculated more accurately. The measuring device 3 is connected between the two drain pipes 102 connected to the two water storage tanks 1, and the measuring device 3 is also of a passage structure, so that the two water storage tanks 1 form a communicating vessel structure, and the water surfaces in the two water storage tanks 1 are positioned on the same horizontal plane. The measuring device 3 comprises a contraction section 301, a measuring section 302 and a diffusion section 303, wherein the contraction section 301 is communicated with the drain pipe 102 of one water storage barrel 1, the diffusion section 303 is communicated with the drain pipe 102 of the other water storage barrel 1, a movable plug 304 is arranged in the measuring section 302, the movable plug 304 can move left and right in the measuring section 302 due to the thrust of the person, but because the movable plug 304 moves by taking the inner wall of the measuring section 302 as a sliding rail, water at the left side and the right side of the movable plug 304 cannot flow through the movable plug 304, and the movable plug 304 is pushed to move. And the scale 305 is marked outside the measuring section 302, the pointer 306 is marked on the movable plug 304, the moving distance of the movable plug 304 in the measuring section 302 can be known through the change of the scale 305 indicated by the pointer 306, so that the moving volume of water in the measuring section 302 from one end of the contracting section 301 to one end of the diffusing section 303 can be known, the moving volume of water in one water storage barrel 1 to water in the other water storage barrel 1 can be obtained, and the height change difference of one water storage barrel 1 can be obtained. The switch valve 4 is installed on the drain pipe 102 communicated with the contraction section 301, and is used for controlling the water flow in the drain pipe 102 to break, ensuring the stability of the movable plug 304 in the measuring device 3 in the non-measuring stage, and accelerating the water flow speed when the switch valve 4 is released in the measuring stage, so that the movable plug 304 is easier to push.
As shown in fig. 1-3, in order to explain the structure of the present application in more detail, another embodiment of a railway bridge track elevation transfer indicating device is provided in more detail, which includes two identical water storage barrels 1, wherein a water storage space 101 is provided in the water storage barrels 1, the water storage space 101 includes a straight barrel portion 1011 and a drainage portion 1012, the cross section of each part of the straight barrel portion 1011 is identical, the cross section is circular, the volume of the straight barrel portion 1011 in a section of height is convenient to calculate, and the volume of the water surface change can be obtained by calculating the area of the circle and multiplying the height of the water surface change. The cross section of the drain portion 1012 gradually decreases from top to bottom so that water within the drain portion 1012 can be easily collected to the bottom of the drain portion 1012. The outside of the water storage barrel 1 is provided with a drain pipe 102, the drain pipe 102 is communicated with the water storage space 101, the drain pipe 102 is a hose which can spiral like a rope and pass through an expansion joint to enter the upper part of a pier, and the drain pipe 102 is communicated with the bottom of the water drain part 1012, so that the drain pipe 102 and the water storage barrel 1 are communicated into a whole. Leveling devices 2 are arranged below the two water storage barrels 1, and each leveling device 2 comprises four supporting legs 201, four adjusting bolts 202 and four leveling devices 203, wherein the supporting legs 201, the adjusting bolts 202 and the leveling devices 203 are identical in number and correspond to each other one by one. The adjusting bolts 202 are in threaded connection with the supporting legs 201, fixing nuts 204 are arranged on each adjusting bolt 202, the gradienters 203 are fixed above the supporting legs 201, when the water storage bucket 1 is used, the adjusting bolts 202 on the four supporting legs 201 are rotated to enable the distance between the supporting legs 201 and the bridge deck to change, the distance between the four supporting legs 201 and the bridge deck is adjusted to enable the four gradienters 203 to display the horizontal state, then the adjusting bolts 202 are locked by the fixing nuts 204, the adjusting bolts 202 can not rotate at will, and the horizontal state of the water storage bucket 1 is maintained. The leveling device 2 can enable the two water storage barrels 1 to be in a horizontal state, so that the horizontal plane in the leveling device 2 is guaranteed to be parallel to the cross section in the water storage barrel 1, and the water volume change in the water storage barrel 1 is calculated more accurately. The measuring device 3 is connected between the two drain pipes 102 connected to the two water storage tanks 1, and the measuring device 3 is also of a passage structure, so that the two water storage tanks 1 form a communicating vessel structure, and the water surfaces in the two water storage tanks 1 are positioned on the same horizontal plane. The measuring device 3 comprises a contraction section 301, a measuring section 302 and a diffusion section 303, wherein the contraction section 301 is communicated with the drain pipe 102 of one water storage barrel 1, the diffusion section 303 is communicated with the drain pipe 102 of the other water storage barrel 1, the longitudinal section of the measuring section 302 is circular, a movable plug 304 is placed in the measuring section 302, the movable plug 304 can move left and right in the measuring section 302 due to the thrust of the person, but because the movable plug 304 moves by taking the inner wall of the measuring section 302 as a slide rail, water at the left side and the right side of the movable plug 304 cannot flow through the movable plug 304, and the movable plug 304 is pushed to move. And the scale 305 is marked outside the measuring section 302, the pointer 306 is marked on the movable plug 304, the moving distance of the movable plug 304 in the measuring section 302 can be known through the change of the scale 305 indicated by the pointer 306, the moving distance of the pointer 306 is multiplied by the circular area of the longitudinal section in the measuring section 302, the moving volume of water in the measuring section 302 from one end of the contracting section 301 to one end of the diffusing section 303 is known, and the moving volume of water in one water storage barrel 1 to water in the other water storage barrel 1 can be obtained, so that the height change difference of one water storage barrel 1 is obtained. The switch valve 4 is installed on the drain pipe 102 communicated with the contraction section 301, and is used for controlling the water flow in the drain pipe 102 to break, ensuring the stability of the movable plug 304 in the measuring device 3 in the non-measuring stage, and accelerating the water flow speed when the switch valve 4 is released in the measuring stage, so that the movable plug 304 is easier to push.
Height of the change of the set elevationThe degree is h, the distance moved by the pointer 306 is a, the diameter of the straight cylinder 1011 is D, and the diameter of the measuring section 302 is D; the calculation formula of the height h of the elevation change is. In the present embodiment, the diameter of the cross section of the straight cylinder 1011 is 3 times the diameter of the longitudinal section of the measuring section 302, and from this data, it can be determined that the proportional relationship between the distance of the movement of the pointer 306 and the change in the bridge floor height is h= =/>a。
A construction method applying the railway bridge track elevation transfer indicating device,
step 1: the screw spikes of the fixed steel rail in the two sides of the expansion joint of the girder end head to be regulated of the railway bridge are unscrewed by more than 12mm, so that the steel rail can not limit the girder to be regulated to move upwards when the girder to be regulated is jacked upwards. The length of the beam is about 30 meters, and the height difference of the bridge deck is adjusted to be in millimeter level, so that rails between a few meters at two sides of an expansion joint of the end head of the beam to be adjusted are influenced, and even if rails at other positions with a longer distance are fixed on sleepers of the bridge deck, the rails are not blocked due to the fact that the bridge deck variables are too small, and therefore screw spikes at the positions with the longer distance from the expansion joint to be treated are not required to be unscrewed.
Step 2: the water storage barrel 1 connected with the contraction section 301 is placed at the end of the beam to be adjusted, and the water storage barrel 1 connected with the diffusion section 303 is placed at the end of the other adjacent beam.
Step 3: the leveling device 2 below the two water storage barrels 1 is adjusted to enable the two water storage barrels 1 to be in a horizontal state.
Step 4: the switch valve 4 is opened to replenish water into the two water storage tanks 1, so that the pointer 306 indicates the 0 position on the scale 305.
Step 5: the switch valve 4 is closed, and the measuring device 3 is sent to the bridge pier from the expansion joint.
Step 6: and jacking up the end of the beam to be regulated by using a jack, regulating the spherical support, then removing the pressure of the jack, opening the switch valve 4, and measuring and calculating the elevation change of the end of the bridge to be regulated according to the moving distance of the pointer 306. When the deck moves upward, since the length of the deck is about 30 m and the deck moves upward at the millimeter level, the inclination of the water storage bucket 1 caused thereby is negligible, and it can be still considered that the water storage bucket 1 is in a horizontal state.
The height of elevation change is h, the distance of movement of the pointer 306 is a, the diameter of the straight cylinder 1011 is D, and the diameter of the measuring section 302 is D; the height h of the elevation change is calculated as follows:
。
step 7: and (6) repeating the step (6) until the required elevation change is achieved.
Step 8: and (5) screwing the unscrewed threaded spike again.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (10)
1. The utility model provides a railroad bridge track elevation shifts indicating device which characterized in that: comprising
Two water storage tanks (1); the inside of the water storage barrel (1) is provided with a water storage space (101), the water storage space (101) comprises a straight barrel part (1011) and a drainage part (1012), the cross sections of the straight barrel part (1011) are the same, and the cross section of the drainage part (1012) is gradually reduced from top to bottom; a drain pipe (102) is arranged outside the water storage barrel (1), and the drain pipe (102) is communicated with the water storage space (101);
leveling devices (2) respectively arranged below the two water storage barrels (1);
a measuring device (3) connected between two of said drains (102); the measuring device (3) comprises a contraction section (301), a measuring section (302) and a diffusion section (303), wherein the contraction section (301) is communicated with the drain pipe (102) of one water storage barrel (1), and the diffusion section (303) is communicated with the drain pipe (102) of the other water storage barrel (1); a movable plug (304) is arranged in the measuring section (302), a scale (305) is marked outside the measuring section (302), and a pointer (306) is marked on the movable plug (304); and
the switch valve (4) is used for controlling the on-off of the water flow in the drain pipe (102); the switch valve (4) is arranged on a drain pipe (102) communicated with the contraction section (301).
2. The railroad bridge track level shift indicating device of claim 1, wherein: the cross-sectional shape of the straight cylinder portion (1011) is circular.
3. The railroad bridge track level shift indicating device of claim 2, wherein: the longitudinal section of the measuring section (302) is circular.
4. The railroad bridge track level shift indicating device of claim 3, wherein: the diameter of the cross section of the straight cylinder (1011) is 2-5 times the diameter of the longitudinal section of the measuring section (302).
5. The railroad bridge track level shift indicating device of claim 1, wherein: the leveling device (2) comprises a plurality of supporting legs (201), adjusting bolts (202) and a level meter (203), wherein the supporting legs (201), the adjusting bolts (202) and the level meter (203) are the same in number and correspond to each other one by one; the adjusting bolt (202) is connected to the supporting leg (201) in a threaded mode, and the level meter (203) is fixed above the supporting leg (201).
6. The railroad bridge track level shift indicating device of claim 5, wherein: each adjusting bolt (202) is provided with a fixing nut (204).
7. The railroad bridge track level shift indicating device of claim 5, wherein: the leveling device (2) comprises four supporting legs (201), four adjusting bolts (202) and four leveling devices (203).
8. A construction method using the railway bridge track elevation transfer indicating apparatus according to any one of claims 1 to 7, characterized in that:
step 1: firstly, unscrewing screw spikes of fixed steel rails within 5-8 meters at two sides of a beam end expansion joint of a railway bridge to be adjusted by more than 10 mm;
step 2: placing the water storage barrel (1) connected with the contraction section (301) at the end of the beam to be adjusted, and placing the water storage barrel (1) connected with the diffusion section (303) at the end of the other adjacent beam;
step 3: the leveling device (2) below the two water storage barrels (1) is adjusted to enable the two water storage barrels (1) to be in a horizontal state;
step 4: opening a switch valve (4) to supplement water into the two water storage barrels (1) so that a pointer (306) indicates the 0 position on a scale (305);
step 5: closing the switch valve (4) and sending the measuring device (3) to the bridge pier from the expansion joint;
step 6: jacking up the end of the beam to be regulated by using a jack, regulating the spherical support, then removing the pressure of the jack, opening a switch valve (4), and measuring and calculating the elevation change of the end of the bridge to be regulated according to the moving distance of a pointer (306);
step 7: repeating the step 6 until the required elevation change is achieved;
step 8: and (5) screwing the unscrewed threaded spike again.
9. The construction method using the railway bridge track elevation transfer indicating apparatus according to claim 8, wherein: the height of elevation change is h, the moving distance of the pointer is a, the diameter of the straight cylinder part is D, and the diameter of the measuring section is D; the height h of the elevation change is calculated as follows:
。
10. the construction method using the railway bridge track elevation transfer indicating apparatus according to claim 8, wherein: in step 1: firstly, screw spikes of fixed steel rails within 6 meters on two sides of a beam end expansion joint to be adjusted of a railway bridge are unscrewed by more than 12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311539087.5A CN117249809B (en) | 2023-11-17 | 2023-11-17 | Railway bridge track elevation transfer indicating device and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311539087.5A CN117249809B (en) | 2023-11-17 | 2023-11-17 | Railway bridge track elevation transfer indicating device and construction method thereof |
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| CN117249809A true CN117249809A (en) | 2023-12-19 |
| CN117249809B CN117249809B (en) | 2024-02-06 |
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| WO2020235324A1 (en) * | 2019-05-17 | 2020-11-26 | Tanaka Hiroyoshi | Height difference measurement device and height difference measurement method |
| CN209877825U (en) * | 2019-06-14 | 2019-12-31 | 中国矿业大学(北京) | Ground crack measuring device |
| CN111609834A (en) * | 2020-06-03 | 2020-09-01 | 中冶建筑研究总院有限公司 | Measuring device for bridge |
| CN212300322U (en) * | 2020-07-07 | 2021-01-05 | 湖北省水利水电规划勘测设计院 | Hydraulic structure settlement detection device |
| CN219430512U (en) * | 2023-04-18 | 2023-07-28 | 丰泽智能装备股份有限公司 | Rail transit support capable of monitoring settlement |
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