CN208792064U - Nested type non-fragment orbit framed bent - Google Patents
Nested type non-fragment orbit framed bent Download PDFInfo
- Publication number
- CN208792064U CN208792064U CN201821119048.4U CN201821119048U CN208792064U CN 208792064 U CN208792064 U CN 208792064U CN 201821119048 U CN201821119048 U CN 201821119048U CN 208792064 U CN208792064 U CN 208792064U
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- elevation
- stud
- fixing sleeve
- pin shaft
- sliding
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Abstract
The utility model relates to sleeper regulation technology fields, and in particular to a kind of nested type non-fragment orbit framed bent.Tool track is extended transversely through by fixing sleeve, sliding sleeve is arranged on fixing sleeve and connect with tool track along sliding laterally for tool track；Elevation adjusts the same end that pin shaft is arranged in fixing sleeve and sliding sleeve along the extending direction of tool track, and sliding sleeve adjusts pin shaft sliding plug with elevation by the long hole being laterally extended along tool track and cooperates；Elevation adjusts stud and is arranged in fixing sleeve and sliding sleeve vertically, and sliding sleeve adjusts stud sliding plug with elevation by the long hole being laterally extended along tool track and cooperates, and elevation adjusts stud and elevation adjusting pin shaft thread is cooperatively connected.The long hole and elevation opened up due to sliding sleeve by the transverse direction along tool track adjusts that stud is mating, and lateral adjustments and the elevation adjusting of this track framed bent are not interfere with each other, and are greatly improved the locking efficiency and accuracy of orbit parameter, are accelerated construction efficiency.
Description
Technical field
The utility model relates to sleeper regulation technology fields, and in particular to a kind of nested type non-fragment orbit framed bent.
Background technique
Traditional single beam type track framed bent generally sets 4 quarter bend joists, not only sufficiently expands joist spacing, but also can increase and apply
Work operating space greatly facilitates construction personnel and carries out reinforcing bar binding, concreting, concrete vibrating, concrete coating etc.
Working procedure, the effect of track framed bent are the formal rail of simulation, accurate lock double-block type sleeper, long sleeper buried-type sleeper and elasticity branch
The position of supporting block sleeper, to guarantee to be laid with the track geometry of formal track.The track geometry of track include: gauge, rail to, it is high
Journey, level, rail cant.The track geometry that track framed bent itself determines has a gauge, rail cant, other parameters rail to, elevation, water
Flat, superrelation on curve etc. needs the single or multiple elevation screw rods of track framed bent system, rail to cooperate completion to adjust to adjuster.It is this
Single beam type track framed bent was once obtaining in Lanzhou-Xinjiang the second double line, special, the expensive wide high-speed rail of big west visitor, capital good fortune railway, Central-South channel etc. wide
General application.
The utility model relates to solve double-block type sleeper, long sleeper buried-type sleeper and elastic bearing block type sleeper without tiny fragments of stone, coal, etc. rail
Road framed bent can not quickly accurate adjustment positioning the problem of, current track framed bent equipment mostly uses greatly the quarter bend frame of single-spar construction,
Adjusting of the rail to, elevation and superrelation on curve is realized on joist, is in particular in: being realized by the height regulator adjusted on supporting leg
The adjustment up and down of track elevation；By the rails of fixed joist two sides to lock realize track rail to laterally adjust；Pass through rotation
The angular adjustment that angle adjustable bolt realizes supporting leg and joist is twisted, and then realizes the adjustment of orbital curve superelevation.
However, over time, it is this by way of locking single joist, realize track geometry adjustment
Track framed bent gradually manifests the disadvantages of section of track slightly spreads location difficulty, accurate adjustment is constructed repeatedly and Human disturbance is larger, because right
The transverse direction of tool track and elevation etc. are all linkages, can be interfered each other, when being adjusted to one of parameter, other
Parameter can also change together therewith, and generally requiring constantly to debug could complete, but final also it is difficult to ensure that accuracy, is
This needs to research and develop a set of nested type non-fragment orbit framed bent, and the cooperation section of track slightly spreads machine and realizes the accurate positioning that track framed bent is slightly spread, together
When, when carrying out track accurate adjustment construction, independent buffer rail is to parameters such as, elevations, so that multiple accurate adjustment parameters are mutual when adjusting
It does not interfere, greatly improves the accurate adjustment construction efficiency of the section of track.
Utility model content
It is independent of each other the purpose of the utility model is to provide a kind of lateral adjustments that can be realized the section of track and elevation adjusting
Non-fragment orbit framed bent.
To achieve the above object, the utility model provides a kind of nested type non-fragment orbit framed bent, including fixing sleeve, sliding
Set, elevation adjust stud and elevation and adjust pin shaft, the fixing sleeve extend transversely through tool track and with immobilizing foundation lateral locking,
The sliding sleeve is arranged on the fixing sleeve and connect with tool track along sliding laterally for tool track；The elevation adjustment pin
Axis is arranged in the same end of the fixing sleeve and sliding sleeve along the extending direction of tool track, and the fixing sleeve and the elevation are adjusted
Pin shaft is rotatably assorted, and the sliding sleeve adjusts pin shaft sliding plug with the elevation by the long hole being laterally extended along tool track
Cooperation；The elevation adjusts stud and is arranged in the fixing sleeve and sliding sleeve vertically, and the fixing sleeve and the elevation adjust spiral shell
Column is rotatably assorted, and the sliding sleeve adjusts stud sliding plug with the elevation by the long hole being laterally extended along tool track and matches
It closes, the elevation adjusts stud and passes through elevation adjusting pin shaft and be cooperatively connected with elevation adjusting pin shaft thread.
Optionally, the fixing sleeve is equipped with the sliding slot opened up along the transverse direction of tool track, and the sliding sleeve is slidably arranged in
In the sliding slot.
It optionally, further include angular adjustment stud, angular adjustment pin shaft and linking arm, the angular adjustment pin shaft is along tool
The extending direction of rail is arranged in the same end of the fixing sleeve and sliding sleeve, and the fixing sleeve passes through the length extended along the vertical direction
Hole and the angular adjustment pin slide are mating, and the aperture on the sliding sleeve for passing through angular adjustment pin shaft is compared with institute
It is big to state angular adjustment pin shaft；The angular adjustment stud is arranged in the fixing sleeve and sliding sleeve, the angular adjustment spiral shell vertically
Column and the fixing sleeve axially and radially limit cooperation, the sliding sleeve by the long hole being laterally extended along tool track with it is described
Angular adjustment stud sliding plug cooperation, the angular adjustment stud be arranged in the angular adjustment pin shaft and with the angle
Pin shaft thread is adjusted to be cooperatively connected；One end of the linking arm is rotatablely connected with the angular adjustment pin shaft, the other end with it is described
Elevation adjusts pin shaft and is fixedly connected.
Optionally, the top of the fixing sleeve is equipped with angle adjustment connection plate, and the angular adjustment stud is arranged in described
Angle adjustment connection plate simultaneously cooperates with the angle adjustment connection plate axial limiting.
Optionally, the quantity of the linking arm is two, and two linking arms are separately positioned on the two sides of fixing sleeve.
Optionally, the elevation adjusts stud bottom and is equipped with protection support, and the protection support is supported on track foundation.
It optionally, further include lateral adjustments stud, the lateral adjustments stud is actively located in one end of the fixing sleeve,
The lateral adjustments stud and the fixing sleeve axial limiting cooperate, and the lateral adjustments stud is threadedly engaged with the sliding sleeve
Connection.
Optionally, the end of the fixing sleeve is equipped with ring flange, and axially spaced-apart is provided with the on the lateral adjustments stud
One limiting section and the second limiting section, first limiting section and second limiting section are separately positioned on the two of the ring flange
Side.
Optionally, scale is equipped on the fixing sleeve and sliding sleeve.
Optionally, described slide is set on the lower section of the tool track, the sliding sleeve top and be located at and work
It is set at the opposite position of tool rail there are two recessing groove, two recessing grooves are used to that tool track to be made to pass through.
A kind of nested type non-fragment orbit framed bent provided by the utility model, including fixing sleeve, sliding sleeve, elevation adjust stud
Pin shaft is adjusted with elevation, fixing sleeve extends transversely through tool track and connect with immobilizing foundation, and sliding sleeve slides laterally along tool track
It is arranged on fixing sleeve and is connect with tool track；Elevation adjusts pin shaft and is arranged in fixing sleeve and cunning along the extending direction of tool track
The same end of dynamic set, fixing sleeve adjust pin shaft with elevation and are rotatably assorted, and sliding sleeve passes through the long hole being laterally extended along tool track
Pin shaft sliding plug cooperation is adjusted with elevation；Elevation adjusts stud and is arranged in fixing sleeve and sliding sleeve, fixing sleeve and elevation vertically
It adjusts stud to be rotatably assorted, sliding sleeve adjusts stud sliding plug with elevation by the long hole being laterally extended along tool track and matches
It closes, elevation adjusts stud and passes through elevation adjusting pin shaft and be cooperatively connected with elevation adjusting pin shaft thread.Since sliding sleeve passes through edge
The long hole that the transverse direction of tool track opens up and elevation adjusting stud are mating, therefore can't be with height to the lateral adjustments of sliding sleeve
Journey adjusts stud and forms interference, i.e. the lateral adjustments of this track framed bent and elevation adjusting are not interfere with each other, and greatly improves track
The locking efficiency and accuracy of parameter, accelerate construction efficiency.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram one of nested type non-fragment orbit framed bent provided by the embodiment of the utility model；
Fig. 2 is a kind of schematic diagram two of nested type non-fragment orbit framed bent provided by the embodiment of the utility model；
Fig. 3 is a kind of schematic diagram three of nested type non-fragment orbit framed bent provided by the embodiment of the utility model.
Appended drawing reference:
1, fixing sleeve；2, sliding sleeve；3, lateral adjustments stud；4, tool track；5, ring flange；6, elevation adjusts stud；7,
Elevation adjusts pin shaft；8, angular adjustment pin shaft；9, angular adjustment stud；10, linking arm；11, protecting wall；12, protection support.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
In conjunction with shown in Fig. 1 to Fig. 3, a kind of nested type non-fragment orbit framed bent provided by the embodiment of the utility model, including it is solid
Surely set 1, sliding sleeve 2, elevation adjust stud 6 and elevation adjusts pin shaft 7, and fixing sleeve 1 extends transversely through tool track 4 and in tool track 4
Transverse direction on locked with immobilizing foundation, fixing sleeve 1 can be set in the lower section of tool track 4, and the both ends of fixing sleeve 1 each extend over out
The two sides of tool track 4, immobilizing foundation can be any facility fixed with ground, such as the protecting wall 11 of trackside, and fixing sleeve 1 can
Horizontally it is connect by hinged mode with immobilizing foundation, it is solid relative to immobilizing foundation in the transverse direction of tool track 4 to realize
It is fixed；Sliding sleeve 2 is arranged on fixing sleeve 1 and connect with tool track 4 along sliding laterally for tool track 4, specifically can be in fixation
Sliding slot is set on set 1, sliding sleeve 2 is slidably arranged in the sliding slot, naturally it is also possible to be sliding slot to be arranged on sliding sleeve 2, and consolidate
Surely set 1 or part fixing sleeve 1 are embedded into sliding sleeve 2, and fixing sleeve 1 is realized also by the connection of sliding sleeve 2 and tool track 4
Fixation on 4 extending direction of tool track.It as a result, can be by the way that lateral adjustments machine manually or between fixing sleeve 1 and sliding sleeve 2 be arranged
Structure carrys out the lateral adjustments of implementation tool rail 4.
Elevation adjusts the same end that pin shaft 7 is arranged in fixing sleeve 1 and sliding sleeve 2 along the extending direction of tool track 4, fixed
Set 1 adjusts pin shaft 7 with elevation and is rotatably assorted, and sliding sleeve 2 passes through the long hole being laterally extended and elevation adjusting pin shaft along tool track 4
7 sliding plugs cooperation, i.e. elevation adjust pin shaft 7 and go up and down together with fixing sleeve 1, is traversing, and do not have shadow to the traversing of sliding sleeve 2
It rings；Elevation adjusts stud 6 and is arranged in fixing sleeve 1 and sliding sleeve 2 vertically, and fixing sleeve 1 adjusts stud 6 with elevation and is rotatably assorted, sliding
Dynamic set 2 adjusts 6 sliding plug of stud cooperation with elevation by the long hole being laterally extended along tool track 4, and elevation adjusts stud 6 and wears
It crosses elevation adjustment pin axis 7 and is threadedly engaged with elevation adjusting pin shaft 7 and is connect, the bottom end that elevation adjusts stud 6 can be supported directly on
On track foundation, it can also be damaged by protecting support 12 to be supported on track foundation to avoid to track foundation.As a result,
When rotating elevation adjusting stud 6, elevation adjusts 7 oscilaltion of pin shaft, while driving 1 oscilaltion of fixing sleeve, implementation tool
The elevation of 4 side of rail is adjusted.
From the foregoing, it will be observed that since sliding sleeve 2 passes through the long hole opened up along the transverse direction of tool track 4 and elevation adjusting 6 grafting of stud
Cooperation, therefore stud 6 can't be adjusted with elevation to the lateral adjustments of sliding sleeve 2 and form interference, the i.e. transverse direction of this track framed bent
It adjusts and elevation adjusting is not interfere with each other, greatly improve the locking efficiency and accuracy of orbit parameter, accelerate construction efficiency.
In some embodiments, fixing sleeve 1 is equipped with the sliding slot opened up along the transverse direction of tool track 4, the sliding setting of sliding sleeve 2
In sliding slot, further, fixing sleeve 1, which can be set, each extends over out the two of tool track 4 at lower section, the both ends of tool track 4
Side, correspondingly, the lower section of tool track 4 is arranged in sliding sleeve 2, sliding sleeve 4 top and be located at the position opposite with tool track 4
The place of setting is set there are two recessing groove, and for two recessing grooves for passing through tool track 4, the two sides side wall of recessing groove is respectively equipped with one group of wedge
Shape plate, the shape of clapboard and the cross sectional shape of tool track are adapted, and sliding sleeve 2 passes through the clapboard and tool in two recessing grooves
Rail is bolted.
In some embodiments, this track framed bent further includes angular adjustment stud 9, angular adjustment pin shaft 8 and linking arm 10,
Angular adjustment pin shaft 8 is arranged in the same end of fixing sleeve 1 and sliding sleeve 2, angular adjustment pin shaft 8 along the extending direction of tool track 4
Position either be located at elevation adjust stud 6 inside, be also possible to be located at elevation adjust stud 6 outside.Specifically,
Fixing sleeve 1 passes through the long hole extended along the vertical direction and 8 sliding plug of angular adjustment pin shaft cooperates, for making angle on sliding sleeve 2
The aperture that degree adjusting pin shaft 8 passes through is big compared with angular adjustment pin shaft 8, and thus angular adjustment pin shaft 8 can be along the height side of fixing sleeve 1
To sliding, and the transverse direction and vertical direction that can do relative to sliding sleeve 2 along tool track 4 move, will not be by while movable
The interference of sliding sleeve 2；Angular adjustment stud 9 is arranged in fixing sleeve 1 and sliding sleeve 2 vertically, and so-called wear vertically is to tool track 4
For state when horizontal arrangement, angular adjustment stud 9 and fixing sleeve 1 axially and radially limit cooperation, i.e. angular adjustment spiral shell
Column 9 can not do movement axially and radially relative to fixing sleeve 1, only being capable of rotation.Sliding sleeve 2 passes through the transverse direction along tool track 4
The long hole of extension and 9 sliding plug of angular adjustment stud cooperate, i.e., sliding laterally for sliding sleeve 2 can't be with angular adjustment stud
9 form interference.Angular adjustment stud 9 is arranged in angular adjustment pin shaft 8 and is threadedly engaged with angular adjustment pin shaft 8 and connect；Connection
One end of arm 10 is rotatablely connected with angular adjustment pin shaft 8, the other end adjusts pin shaft 7 with elevation and is fixedly connected, the number of linking arm 10
Amount can be two, and two linking arms 10 are separately positioned on the two sides of fixing sleeve 1.
Adjusted as a result, in superrelation on curve, while adjusting stud 6 by elevation and adjust 1 both ends elevation of fixing sleeve, it is positive or
When reversely rotating angular adjustment stud 9, angular adjustment pin shaft 8 is moved upwardly or downwardly relative to fixing sleeve 1 and sliding sleeve 2, together
When linking arm 10 rotate, linking arm 10 drive elevation adjust pin shaft 7 rotate, make elevation adjust stud 6 remain vertical
State realizes the accurate adjusting of elevation and angle with this.
Wherein, the settable angle adjustment connection plate in the top of fixing sleeve 1, angular adjustment stud 9 are arranged in angular adjustment company
Fishplate bar simultaneously cooperates with angle adjustment connection plate axial limiting, thus can carry out in the top of fixing sleeve 1 to angular adjustment stud 9
It adjusts, it is easy to operate.
In some embodiments, the lateral adjustments that lateral adjustments stud 3 carrys out implementation tool rail, lateral adjustments stud can be used
3 are actively located in one end of fixing sleeve 1, and lateral adjustments stud 3 and 1 axial limiting of fixing sleeve cooperate, lateral adjustments stud 3 and cunning
Dynamic set 2 is threadedly engaged connection, specifically can be arranged two on lateral adjustments stud 3 by the way that ring flange 5 is arranged in 1 end of fixing sleeve
Limiting section, two limiting sections are clipped in the two sides of ring flange 5.By adjusting the forward and reverse rotation of lateral adjustments stud 3, realizes and slide
Dynamic set 2 drives 4 transverse moving left and rights of tool track, thus by rail to being adjusted to accurate state.
In some embodiments, scale is equipped on sliding sleeve 2 and fixing sleeve 1.So that when the worker operation novel section of track,
Only it need to can determine whether displacement of the sliding sleeve 1 relative to fixing sleeve 1 according to the relative position of 1 high scale of sliding sleeve 2 and fixing sleeve,
It is truly realized visualization function of the rail to adjustment.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (10)
1. a kind of nested type non-fragment orbit framed bent, which is characterized in that adjust stud and elevation including fixing sleeve, sliding sleeve, elevation
Adjust pin shaft, the fixing sleeve extend transversely through tool track and with immobilizing foundation lateral locking, cross of the sliding sleeve along tool track
To being slidably arranged on the fixing sleeve and connect with tool track；The elevation adjusts pin shaft and wears along the extending direction of tool track
Set on the same end of the fixing sleeve and sliding sleeve, the fixing sleeve adjusts pin shaft with the elevation and is rotatably assorted, the sliding
Set adjusts pin shaft sliding plug cooperation with the elevation by the long hole being laterally extended along tool track；The elevation adjusts stud
It is arranged in the fixing sleeve and sliding sleeve vertically, the fixing sleeve adjusts stud with the elevation and is rotatably assorted, the sliding sleeve
Stud sliding plug cooperation is adjusted with the elevation by the long hole being laterally extended along tool track, the elevation adjusts stud and wears
The elevation is crossed to adjust pin shaft and adjust pin shaft thread mating connection with the elevation.
2. nested type non-fragment orbit framed bent according to claim 1, which is characterized in that the fixing sleeve is equipped with along tool
The sliding slot that the transverse direction of rail opens up, the sliding sleeve are slidably arranged in the sliding slot.
3. nested type non-fragment orbit framed bent according to claim 2, which is characterized in that further include angular adjustment stud, angle
Degree adjusts pin shaft and linking arm, the angular adjustment pin shaft are arranged in the fixing sleeve and sliding sleeve along the extending direction of tool track
The same end, the fixing sleeve passes through the long hole that extends along the vertical direction and the angular adjustment pin slide is mating, institute
The aperture stated on sliding sleeve for passing through the angular adjustment pin shaft is big compared with the angular adjustment pin shaft；The angular adjustment spiral shell
Column is arranged in the fixing sleeve and sliding sleeve vertically, and the angular adjustment stud is axially and radially limited with the fixing sleeve matches
It closes, the sliding sleeve is cooperated by the long hole being laterally extended along tool track with the angular adjustment stud sliding plug, described
Angular adjustment stud is arranged in the angular adjustment pin shaft and is cooperatively connected with the angular adjustment pin shaft thread；The connection
One end of arm is rotatablely connected with the angular adjustment pin shaft, the other end adjusts pin shaft with the elevation and is fixedly connected.
4. nested type non-fragment orbit framed bent according to claim 3, which is characterized in that the top of the fixing sleeve is equipped with angle
Degree adjust connecting plate, the angular adjustment stud be arranged in the angle adjustment connection plate and with the angle adjustment connection plate
Axial limiting cooperation.
5. nested type non-fragment orbit framed bent according to claim 3, which is characterized in that the quantity of the linking arm is two
A, two linking arms are separately positioned on the two sides of the fixing sleeve.
6. nested type non-fragment orbit framed bent according to claim 1, which is characterized in that the elevation adjusts stud bottom and sets
There is protection to hold in the palm, the protection support is supported on track foundation.
7. nested type non-fragment orbit framed bent according to claim 2, which is characterized in that further include lateral adjustments stud, institute
State one end that lateral adjustments stud is actively located in the fixing sleeve, the lateral adjustments stud and the fixing sleeve axial limiting
Cooperation, the lateral adjustments stud is threadedly engaged with the sliding sleeve to be connect.
8. nested type non-fragment orbit framed bent according to claim 7, which is characterized in that the end of the fixing sleeve is equipped with method
Blue disk, axially spaced-apart is provided with the first limiting section and the second limiting section on the lateral adjustments stud, first limiting section and
Second limiting section is separately positioned on the two sides of the ring flange.
9. nested type non-fragment orbit framed bent according to claim 2, which is characterized in that on the fixing sleeve and sliding sleeve
Equipped with scale.
10. nested type non-fragment orbit framed bent according to claim 2, which is characterized in that the sliding is set on described
The lower section of tool track is set at the top and being located at the position opposite with tool track of the sliding sleeve there are two recessing groove, two
The recessing groove is for passing through tool track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821119048.4U CN208792064U (en) | 2018-07-13 | 2018-07-13 | Nested type non-fragment orbit framed bent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821119048.4U CN208792064U (en) | 2018-07-13 | 2018-07-13 | Nested type non-fragment orbit framed bent |
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| Publication Number | Publication Date |
|---|---|
| CN208792064U true CN208792064U (en) | 2019-04-26 |
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ID=66202470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821119048.4U Active CN208792064U (en) | 2018-07-13 | 2018-07-13 | Nested type non-fragment orbit framed bent |
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| CN (1) | CN208792064U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714379A (en) * | 2018-07-13 | 2020-01-21 | 中铁第五勘察设计院集团有限公司 | Nested ballastless track bent |
| CN111910478A (en) * | 2020-08-24 | 2020-11-10 | 耿超玮 | Steel rail support frame for urban rail transit integral ballast bed construction and construction method |
| CN111945490A (en) * | 2019-05-17 | 2020-11-17 | 中铁第五勘察设计院集团有限公司 | Track slab fine adjustment bracket |
-
2018
- 2018-07-13 CN CN201821119048.4U patent/CN208792064U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714379A (en) * | 2018-07-13 | 2020-01-21 | 中铁第五勘察设计院集团有限公司 | Nested ballastless track bent |
| CN110714379B (en) * | 2018-07-13 | 2024-09-13 | 中铁第五勘察设计院集团有限公司 | Nested ballastless track bent |
| CN111945490A (en) * | 2019-05-17 | 2020-11-17 | 中铁第五勘察设计院集团有限公司 | Track slab fine adjustment bracket |
| CN111910478A (en) * | 2020-08-24 | 2020-11-10 | 耿超玮 | Steel rail support frame for urban rail transit integral ballast bed construction and construction method |
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