CN221545278U - Railway large displacement beam end telescoping device - Google Patents
Railway large displacement beam end telescoping device Download PDFInfo
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- CN221545278U CN221545278U CN202323552831.3U CN202323552831U CN221545278U CN 221545278 U CN221545278 U CN 221545278U CN 202323552831 U CN202323552831 U CN 202323552831U CN 221545278 U CN221545278 U CN 221545278U
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- sleeper
- sliding
- movable
- longitudinal beam
- telescoping device
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 22
- 241001669679 Eleotris Species 0.000 claims abstract description 85
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 74
- 229910052742 iron Inorganic materials 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 27
- 239000010935 stainless steel Substances 0.000 claims abstract description 27
- 229910003460 diamond Inorganic materials 0.000 claims description 11
- 239000010432 diamond Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 235000000396 iron Nutrition 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model belongs to the technical field of bridge engineering, and particularly relates to a railway large-displacement beam end telescopic device which comprises a telescopic mechanism, a longitudinal beam and a movable steel sleeper, wherein the movable steel sleeper is arranged in a beam seam between an approach bridge and a continuous beam bridge, a fixed part of the longitudinal beam is fixed on a first sleeper on the approach bridge, a movable part of the longitudinal beam is slidably arranged on a second sleeper on the movable steel sleeper and the continuous beam bridge through sliding buckle iron, a first mirror surface stainless steel is arranged on the bottom surface of the movable part of the longitudinal beam, sliding base plates are arranged on the top surfaces of the second sleeper and the movable steel sleeper, and sliding plates in sliding fit with the first mirror surface stainless steel are arranged on the sliding base plates. According to the utility model, the first mirror surface stainless steel is arranged on the bottom surface of the movable part of the longitudinal beam to serve as the small-resistance sliding surface, and when the bridge stretches, the second sleeper and the movable steel sleeper on the bridge side of the continuous beam form a small-resistance sliding pair to slide between the sliding plate on the top surface and the first mirror surface stainless steel on the longitudinal beam, so that the smooth and long-acting sliding expansion of the expansion device is ensured.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering, and particularly relates to a railway large-displacement beam end telescoping device.
Background
The large-displacement beam end expansion device is an important component of the railway track bridge, and the continuity and smoothness of the railway track at the bridge joint are effectively ensured. The telescopic device is generally arranged between beam end joints of the large-span bridge, and the telescopic device has to have a sliding function in order to meet the requirement of the expansion of the bridge; and the sliding part has enough strength and rigidity to meet the passing requirement of the train.
The conventional railway track bridge large-displacement telescopic device mainly comprises a large-displacement beam end telescopic device, a box-shaped structure beam end telescopic device and a support beam type beam end telescopic device; the sliding parts of the two latter expansion devices adopt box type and lower supporting beams, and certain problems exist in installation, sliding effect and maintenance; the friction force between the movable part of the longitudinal beam and the movable steel sleeper and the sleeper in the large-displacement beam end telescopic device is large, sliding is unsmooth, abrasion and faults are easy to occur, and the service life and the working efficiency of the device are affected.
Disclosure of utility model
In order to overcome the defects in the prior art, the utility model aims to provide the railway large-displacement beam end telescopic device which can smoothly and long-effectively slide and stretch, improve the working efficiency and delay the service life.
In order to achieve the above purpose, the technical scheme of the utility model is that the large-displacement girder end telescopic device for the railway comprises a telescopic mechanism, a longitudinal girder and a movable steel sleeper, wherein the movable steel sleeper is arranged in a girder seam between an approach bridge and a continuous girder bridge, a fixed part of the longitudinal girder is fixed on a first sleeper on the approach bridge, the movable part of the longitudinal girder is arranged on a second sleeper on the movable steel sleeper and the continuous girder bridge in a sliding way through a sliding buckle iron, a first mirror surface stainless steel is arranged on the bottom surface of the movable part of the longitudinal girder, sliding base plates are arranged on the top surfaces of the second sleeper and the movable steel sleeper, and sliding plates in sliding fit with the first mirror surface stainless steel are arranged on the sliding base plates.
As one embodiment, the longitudinal beam adopts an i-shaped cross section, and the first mirror stainless steel is arranged on the bottom surface of the lower flange plate of the longitudinal beam.
As one of the implementation modes, the sliding buckle iron is in an inverted L shape, the vertical part of the sliding buckle iron is fixed on the second sleeper or the movable steel sleeper through bolts, and the horizontal part of the sliding buckle iron extends to the top surface of the lower flange plate of the longitudinal beam.
As one of the implementation modes, the top surface of the lower flange plate of the longitudinal beam is provided with second mirror surface stainless steel, the bottom surface of the horizontal part of the sliding buckle iron is provided with a sliding strip, and the second mirror surface stainless steel is in sliding fit with the sliding strip.
As one of the implementation modes, the sliding buckle iron is arranged on the second sleeper or the movable steel sleeper on two sides of the longitudinal beam.
As one of the implementation modes, an adjusting gasket is arranged between the sliding base plate and the sliding buckle iron.
As one embodiment, the fixing portion of the side member is fixed to the first sleeper by a fixing clip.
As one of the embodiments, the fixing portion of the longitudinal beam is provided with a fixing groove matched with the fixing buckle iron.
As one of the implementation modes, the telescopic mechanism is a scissor fork assembly, the middle of the scissor fork assembly is connected with the movable sleeper, and two ends of the scissor fork assembly are respectively connected with the first sleeper and the second sleeper.
As one of the implementation modes, the scissors fork assembly comprises two diamond units, one ends of the two diamond units, which deviate from each other, are respectively connected with the first sleeper and the second sleeper, and the ends of the two diamond units, which are close to each other, are connected with the movable steel sleeper.
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the utility model, the first mirror surface stainless steel is arranged on the bottom surface of the movable part of the longitudinal beam to serve as a small-resistance sliding surface, and when the bridge stretches, the second sleeper and the movable steel sleeper on the bridge side of the continuous beam form a small-resistance sliding pair to slide between the sliding plate on the top surface and the first mirror surface stainless steel on the longitudinal beam, so that the smooth and long-acting sliding expansion of the expansion device is ensured;
(2) According to the utility model, the first mirror surface stainless steel on the top surface of the lower flange plate of the movable part of the longitudinal beam is matched with the sliding strip on the sliding buckle iron, so that the sliding with small substantial friction resistance is formed, and the sliding resistance of the telescopic device is reduced;
(3) According to the utility model, the adjusting gaskets can be additionally arranged between the sliding backing plate and the sliding buckle iron, sliding factors such as the mirror surface stainless steel on the longitudinal beam, the positive pressure of the sliding surface of the sliding backing plate and the sliding buckle iron and the like are adjusted, and the friction resistance of each mounting point is optimized, so that more effective and smooth sliding is formed;
(4) All the installation and maintenance work of the telescopic device can be realized on the road surface, the difficulty of the installation and maintenance work is greatly reduced, and the work efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a stringer according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of a stringer according to an embodiment of the present utility model;
FIG. 3 is a schematic structural view of a railway large displacement beam end expansion device according to an embodiment of the present utility model;
In the figure: 1. a longitudinal beam; 101. a fixing portion; 102. a movable portion; 103. a first mirror stainless steel; 104. a second mirror stainless steel; 105. a fixing groove; 2. a track; 3. fixing the buckle iron; 4. a scissors fork assembly; 5. a movable steel sleeper; 6. a first tie; 7. a second tie; 8. sliding buckle iron; 9. and a sliding backing plate.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly; in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in fig. 1-3, this embodiment provides a large-displacement girder end telescoping device of railway, including telescopic machanism, longeron 1 and movable steel sleeper 5, movable steel sleeper 5 sets up in the roof beam seam between approach bridge and the continuous bridge, longeron 1 is installed across the roof beam seam, longeron 1 includes fixed part 101 and movable part 102, the fixed part 101 of longeron 1 is fixed on first sleeper 6 on the approach bridge, movable part 102 of longeron 1 slide through slide button iron 8 set up on movable steel sleeper 5 with on the second sleeper 7 on the continuous bridge, be provided with first mirror surface stainless steel 103 on the bottom surface of movable part 102 of longeron 1, second sleeper 7 with the top surface of movable steel sleeper 5 all is provided with slide backing plate 9, slide backing plate 9 is last be provided with first mirror surface stainless steel 103 sliding fit's slide. According to the embodiment, the first mirror surface stainless steel 103 is arranged on the bottom surface of the movable part 102 of the longitudinal beam 1 to serve as a small-resistance sliding surface, so that a smooth and long-acting small-resistance sliding pair is formed, the longitudinal beam 1 is guaranteed to be matched with a sliding plate on the sliding base plate 9 on the top surfaces of the second sleeper 7 and the movable sleeper 5 after being installed, a substantial small-friction-resistance sliding is formed, and a smooth and long-acting sliding expansion and contraction of the expansion mechanism can be guaranteed.
As shown in fig. 3, the movable sleeper 5 is installed below the longitudinal beam 1 in the beam seam through the sliding buckle iron 8, two rails 2 are arranged in parallel, and the two rails 2 are installed on the first sleeper 6 and the second sleeper 7 on two sides of the beam seam and the movable sleeper 5 in the beam seam, so that the rails 2 are continuously supported at the beam seam; the outer sides of the two rails 2 are provided with longitudinal beams 1, and the longitudinal beams 1 and the rails 2 are paved on the same sleeper plane; the dead weight of the telescopic mechanism and the load of the train are transmitted to the longitudinal beam 1 in a concentrated way through the rail 2-movable sleeper 5 when the train passes through the beam seam, and the longitudinal beam 1 has higher strength and rigidity while realizing the sliding function, thereby meeting the bearing requirement.
The sliding plate on the sliding pad 9 of the embodiment can be a polytetrafluoroethylene sliding plate, has a low friction coefficient, and has the advantages of extremely small sliding friction resistance, good wear resistance and corrosion resistance and long service life.
As shown in fig. 1 and 2, in this embodiment, the stringer 1 has an i-shaped cross section, and the first mirror stainless steel 103 is disposed on the bottom surface of the lower flange plate of the stringer 1.
As one of the embodiments, the sliding buckle iron 8 is in an inverted L shape, the vertical portion of the sliding buckle iron 8 is fixed on the second sleeper 7 or the movable steel sleeper 5 through bolts, and the horizontal portion of the sliding buckle iron 8 extends onto the top surface of the lower flange plate of the longitudinal beam 1, so that the movable portion 102 of the longitudinal beam 1 is pressed on the second sleeper 7 or the movable steel sleeper 5.
As one of the implementation manners, a second mirror surface stainless steel 104 is arranged on the top surface of the lower flange plate of the longitudinal beam 1, a sliding strip is arranged on the bottom surface of the horizontal part of the sliding buckle iron 8, and the second mirror surface stainless steel 104 is in sliding fit with the sliding strip. The second mirror surface stainless steel 104 on the top surface of the lower flange plate of the longitudinal beam 1 of the embodiment is matched with the sliding strip on the sliding buckle iron 8 to form substantial friction resistance sliding, so that the sliding resistance of the telescopic device can be reduced. The sliding bar can be a copper-based sliding bar, has higher strength and rigidity and good wear resistance, and prolongs the service life of the device.
As shown in fig. 3, the second sleeper 7 or the movable sleeper 5 on both sides of the longitudinal beam 1 is provided with the sliding buckle iron 8. The longitudinal beam 1 can be limited by matching the sliding buckling irons 8 on the two sides of the movable part 102 of the longitudinal beam 1.
In one embodiment, an adjusting pad is arranged between the sliding pad 9 and the sliding buckle iron 8. Through increasing the adjustment gasket between slide backing plate 9 and slide knot iron 8, can adjust the slide backing plate 9 and the slide knot iron 8 of longeron 1 and longeron 1 installation relationship, optimize the slip positive pressure of each installed point of longeron 1, form more efficient little resistance sliding pair.
As shown in fig. 3, the fixing portion 101 of the side member 1 is fixed to the first sleeper 6 by a fixing clip 3. The first sleeper 6 on the two sides of the longitudinal beam 1 is provided with fixed buckling irons 3, the lower flange plates of the fixed parts 101 of the longitudinal beam 1 are buckled on the first sleeper 6 in a matched mode through the fixed buckling irons 3 on the two sides, the fixed buckling irons 3 are fixedly connected with the first sleeper 6 through screw fixation, and therefore the fixed parts 101 of the longitudinal beam 1 are fixed on the first sleeper 6.
Further, the fixing portion 101 of the side member 1 is provided with a fixing groove 105 which is engaged with the fixing clip 3. Specifically, the vertical portion of the fixed buckling iron 3 is fixed with the first sleeper 6 through a screw, the horizontal portion of the fixed buckling iron 3 is tightly buckled on the top surface of the lower flange plate of the fixed portion 101 of the longitudinal beam 1, a limit bump is arranged on one side, facing the longitudinal beam 1, of the vertical portion of the fixed buckling iron 3, and the limit bump is matched with the fixing groove 105, so that the fixed portion 101 of the longitudinal beam 1 is limited and fixed.
As shown in fig. 3, the telescopic mechanism is a scissor assembly 4, the middle of the scissor assembly 4 is connected with the movable steel sleeper 5, and two ends of each scissor assembly 4 are respectively and fixedly connected with the first sleeper 6 and the second sleeper 7 at two sides of the beam seam. The scissors fork assembly 4 and the track 2 are arranged on the same plane, the telescopic function structure of the telescopic device is completely exposed, the mounting and maintenance cross section of the telescopic device is clear, the mounting and maintenance work difficulty is greatly reduced, and the work efficiency is improved.
In one embodiment, the scissor assembly 4 includes two diamond units, one ends of the two diamond units, which deviate from each other, are fixedly connected with the first sleeper 6 and the second sleeper 7, one ends of the two diamond units, which are close to each other, are hinged, and the hinge shaft is connected with the movable steel sleeper 5. In other embodiments, the scissor assembly 4 may further adopt more than two diamond units to be hinged in turn, wherein the hinge positions of adjacent diamond units in the beam seam are all provided with movable steel sleepers 5, and the hinge shaft of each hinge position is connected with the corresponding movable steel sleeper 5.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. The utility model provides a railway large displacement beam end telescoping device, includes telescopic machanism, longeron and activity steel sleeper, the activity steel sleeper sets up in the roof beam seam between approach bridge and the continuous beam bridge, the fixed part of longeron is fixed in on the first sleeper on the approach bridge, the movable part of longeron set up in through sliding buckle iron slip on the activity steel sleeper with on the second sleeper on the continuous beam bridge, its characterized in that: the movable steel sleeper is characterized in that a first mirror surface stainless steel is arranged on the bottom surface of the movable part of the longitudinal beam, sliding base plates are arranged on the top surfaces of the second sleeper and the movable steel sleeper, and sliding plates which are in sliding fit with the first mirror surface stainless steel are arranged on the sliding base plates.
2. The railway large displacement beam-end telescoping device of claim 1, wherein: the longitudinal beam adopts an I-shaped section, and the first mirror surface stainless steel is arranged on the bottom surface of the lower flange plate of the longitudinal beam.
3. The railway large displacement beam-end telescoping device of claim 2, wherein: the sliding buckle iron is in an inverted L shape, the vertical part of the sliding buckle iron is fixed on the second sleeper or the movable steel sleeper through bolts, and the horizontal part of the sliding buckle iron extends to the top surface of the lower flange plate of the longitudinal beam.
4. A railway large displacement beam-end telescoping device as claimed in claim 3, wherein: the top surface of the lower flange plate of the longitudinal beam is provided with second mirror surface stainless steel, the bottom surface of the horizontal part of the sliding buckle iron is provided with a sliding strip, and the second mirror surface stainless steel is in sliding fit with the sliding strip.
5. The railway large displacement beam-end telescoping device of claim 4, wherein: the second sleeper or the movable sleeper on the two sides of the longitudinal beam is provided with the sliding buckle iron.
6. The railway large displacement beam-end telescoping device of claim 4, wherein: an adjusting gasket is arranged between the sliding base plate and the sliding buckle iron.
7. The railway large displacement beam-end telescoping device of claim 1, wherein: the fixed part of the longitudinal beam is fixed on the first sleeper through a fixed buckle iron.
8. The railway large displacement beam-end telescoping device of claim 7, wherein: the fixed part of the longitudinal beam is provided with a fixed groove matched with the fixed buckle iron.
9. The railway large displacement beam-end telescoping device of claim 1, wherein: the telescopic mechanism is a scissor fork assembly, the middle of the scissor fork assembly is connected with the movable steel sleeper, and two ends of the scissor fork assembly are respectively connected with the first sleeper and the second sleeper.
10. The railway large displacement beam-end telescoping device of claim 9, wherein: the scissors fork assembly comprises two diamond units, one ends of the two diamond units, which deviate from each other, are respectively connected with the first sleeper and the second sleeper, and the ends of the two diamond units, which are close to each other, are connected with the movable steel sleeper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323552831.3U CN221545278U (en) | 2023-12-26 | 2023-12-26 | Railway large displacement beam end telescoping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323552831.3U CN221545278U (en) | 2023-12-26 | 2023-12-26 | Railway large displacement beam end telescoping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221545278U true CN221545278U (en) | 2024-08-16 |
Family
ID=92261057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323552831.3U Active CN221545278U (en) | 2023-12-26 | 2023-12-26 | Railway large displacement beam end telescoping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221545278U (en) |
-
2023
- 2023-12-26 CN CN202323552831.3U patent/CN221545278U/en active Active
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