CN206843866U - A kind of magnetic floats joint for track panel and magnetic levitation track - Google Patents
A kind of magnetic floats joint for track panel and magnetic levitation track Download PDFInfo
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- CN206843866U CN206843866U CN201720431403.0U CN201720431403U CN206843866U CN 206843866 U CN206843866 U CN 206843866U CN 201720431403 U CN201720431403 U CN 201720431403U CN 206843866 U CN206843866 U CN 206843866U
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Abstract
A kind of magnetic provided by the utility model floats joint for track panel and magnetic levitation track, and magnetic floats the major joint and sub-joint that joint for track panel includes being respectively arranged at the two neighboring section of track.Major joint and sub-joint male-female engagement, can the vertically and horizontally spacing adjustment of the real section of track.Magnetic levitation track is made up of the major joint section of track and the sub-joint section of track being sequentially connected.This programme forms the excessive magnetic pole strength of gapless, avoids the presence of interval end face in the past by major joint and sub-joint male-female engagement, in extraneous temperature change, so that the section of track is freely expanded with heat and contract with cold and positional fluctuation, the stable operation of magnetic suspension train is ensure that, reduces energy consumption.
Description
Technical field
The utility model belongs to technical field of rail traffic, and more particularly to a kind of magnetic floats joint for track panel and magnetic levitation track.
Background technology
Magnetic floating traffic is different from subway, light rail transit, a brand-new transportation trade of monorail transit, is had low
Noise, with small vibration, pollution-free, circuit strong adaptability, it is easy to a series of features such as planning construction, is safe and reliable, environment-friendly
The new city Rail Transit System of type, especially suitable for old town, business core space, closely business district, intercity, tourism
The public transport at scenic spot etc., is increasingly becoming one of ideal chose of City Rail Transit System.With track traffic cause
Development, the desirability of urban transportation propose higher requirement, the skill of its track to magnetic levitation track traffic track systems technology
Art performance directly affects the operating combination property of magnetic-levitation train.
Magnetic-levitation train track is to connect F type rails with high-strength bolt by sleeper to be assembled to form the section of track, and then the section of track passes through again
Fastener is fixed on bridge foundation using high-strength bolt, and so multiple sections of track connect to form track by joint.The section of track with
Joint between the section of track needs centering positioning adjustment (i.e. horizontal Y and vertical Z), F type the rails longitudinal direction (X) caused by the temperature difference flexible
Adjustment, while F shaped steel magnetic pole strength of the suspension magnet by magneticaction at joint for track panel is taken into account, wheel device acts on F
At shaped steel flange plate the problem of (positive stop lug boss, guide pad).However, in the prior art, but the joint between the section of track and the section of track
There is section in junction, the width of section is typically about 20mm or so, during magnetic-levitation train high-speed cruising, by section
Easily there is " soaring " phenomenon in suspension magnet during place, and " falling through " phenomenon easily occurs in wheel device, and the train generation of operation can be made small
The fluctuation of amplitude, the even running to train impact, and comfortableness reduces, and form unsafe factor, also increase energy consumption.
Further, since the joint between the section of track and the section of track is adopted and is bolted connection, in train operation, due to joint
Place can not provide the space of certain freely activity with jolting for train so that the unbalance stress of magnetic suspension train, can not keep away
Exempt from fluctuation during train operation.
Therefore, how a kind of magnetic is provided and floats joint for track panel and magnetic levitation track, overcomes the end face problem in joint, realizes row
Car operates steadily, is safe and comfortable.
Utility model content
The utility model provides a kind of magnetic and floats joint for track panel and magnetic levitation track, overcomes the end face problem in joint, real
Existing train operation is steady, safe and comfortable.
In order to solve the above technical problems, the utility model, which provides a kind of magnetic, floats joint for track panel, including for being respectively arranged at
Major joint and sub-joint on the opposite face of the two neighboring section of track；
The major joint and the sub-joint male-female engagement.
Preferably, in above-mentioned magnetic floats joint for track panel, the major joint includes interior U-shaped body, and the sub-joint includes and institute
State the outer U-shaped body that interior U-shaped body is arranged cooperation.
Preferably, in above-mentioned magnetic floats joint for track panel, the major joint also includes leading branch groove, and the sub-joint also includes
With the guide pad led branch groove and be arranged cooperation；
Or, the major joint also includes guide pad, the sub-joint also includes leading branch with what the guide pad was arranged cooperation
Groove.
Preferably, in above-mentioned magnetic floats joint for track panel, the major joint also includes positive stop lug boss, and the sub-joint also includes
To avoid the clearance plane of the positive stop lug boss；
Or, the major joint also includes clearance plane, the sub-joint is also included to avoid the positive stop lug boss of the clearance plane.
Preferably, above-mentioned magnetic float joint for track panel in, the major joint include from the inner side of magnetic-levitation to outside according to
The interior U-shaped body of secondary setting, branch groove and positive stop lug boss are led, the sub-joint is included from the inner side of magnetic-levitation to outside successively
Outer U-shaped body, guide pad and the clearance plane set.
Preferably, in above-mentioned magnetic floats joint for track panel, elongated slot counterbore is offered on the sub-joint, the major joint is in institute
State and screw is offered on the correspondence position of elongated slot counterbore, the connection for being fixed on the screw is provided with the elongated slot counterbore
Screw.
Preferably, in above-mentioned magnetic floats joint for track panel, the interior U-shaped body includes outer magnetic wing plate, the level board being sequentially connected
With interior magnetic wing plate, the outer U-shaped body includes outer magnetic clutch plate, middle backplate and the interior magnetic clutch plate being sequentially connected；
The outer magnetic wing plate and the level board, the level board and the interior magnetic wing plate, the outer magnetic clutch plate with it is described
It is arc-shaped transition area between middle backplate and the middle backplate and the interior magnetic clutch plate.
The utility model also provides a kind of magnetic levitation track, including the section of track, it is characterised in that also includes connecting two neighboring institute
The magnetic for stating the section of track floats joint for track panel, and the magnetic floats joint for track panel and floats joint for track panel using above-mentioned magnetic.
Preferably, in above-mentioned magnetic levitation track, the length of the major joint section of track is more than the sub-joint section of track.
A kind of magnetic provided by the utility model floats joint for track panel and magnetic levitation track, and magnetic, which floats joint for track panel, to be included setting respectively
In the major joint and sub-joint of the two neighboring section of track.Major joint and sub-joint male-female engagement, can the real section of track vertically and horizontally spacing tune
It is whole.Magnetic levitation track is made up of the major joint section of track and the sub-joint section of track being sequentially connected.This programme is recessed by major joint and sub-joint
Convex cooperation, the excessive magnetic pole strength of gapless is formd, avoid the presence of interval end face in the past, in extraneous temperature change, make
The section of track is freely expanded with heat and contract with cold and positional fluctuation, ensure that the stable operation of magnetic suspension train, reduce energy consumption.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing of offer.
Fig. 1 is is spaced formed magnetic-levitation successively by the major joint section of track and the short sub-joint section of track；
Fig. 2 is is spaced formed magnetic-levitation successively by the major joint section of track and the sub-joint section of track；
Fig. 3 is the structural representation of magnetic suspension joint for track panel of the present utility model；
Fig. 4 is the structural representation of major joint in the utility model；
Fig. 5 is the structural representation of sub-joint in the utility model；
Fig. 6 is major joint and the structural representation after sub-joint cooperation in the utility model；
Fig. 7 is the structural representation that magnetic suspension train is located on the magnetic suspension section of track of the present utility model.
In figure：1 major joint, 2 sub-joints, the 3 major joint sections of track, the 4 short sub-joint sections of track, the 5 sub-joint sections of track, U-shaped body in 6,
7 lead branch groove, and 8 positive stop lug boss, 9 outer U-shaped bodies, 10 guide pads, 11 clearance planes, 12 elongated slot counterbores, 13 attachment screws, 14 connect
Contacting surface, 15 magnetic pole contact surfaces, 16 car bodies, 17 wheel devices, 18 suspension magnets, 19 supporting frames, 20 screws；The outer magnetic wings of 6-1
Plate, 6-2 level boards, magnetic wing plate in 6-3, the outer magnetic clutch plates of 9-1, backplate in 9-2, magnetic clutch plate in 9-3.
Embodiment
Core of the present utility model is to provide a kind of magnetic and floats joint for track panel and magnetic levitation track, overcomes and is asked in the end face of joint
Topic, realize that train operation is steady, safe and comfortable.
In order that those skilled in the art more fully understands technical scheme provided by the utility model, below in conjunction with attached
The utility model is described in further detail with specific embodiment for figure.
Fig. 1-Fig. 7 is refer to, a kind of magnetic that this programme is provided floats joint for track panel, including for being respectively arranged at adjacent two
Major joint 1 and sub-joint 2 on the opposite face of the individual section of track.Major joint 1 and the male-female engagement of sub-joint 2.Major joint 1 is arranged on master and connect
The end of head rail row 3, sub-joint 2 are arranged on the end of the sub-joint section of track 5, and sub-joint 2 is matched somebody with somebody with major joint 1 by outer connector
Close and connect, the contact surface of sub-joint 2 and major joint 1 is without section.
A kind of magnetic provided by the utility model floats joint for track panel and magnetic levitation track, and magnetic, which floats joint for track panel, to be included setting respectively
In the major joint and sub-joint of the two neighboring section of track.Major joint and sub-joint male-female engagement, can the real section of track vertically and horizontally spacing tune
It is whole.Magnetic levitation track is made up of the major joint section of track and the sub-joint section of track being sequentially connected.This programme is recessed by major joint and sub-joint
Convex cooperation, the excessive magnetic pole strength of gapless is formd, avoid the presence of interval end face in the past, in extraneous temperature change, make
The section of track is freely expanded with heat and contract with cold and positional fluctuation, ensure that the stable operation of magnetic suspension train, reduce energy consumption.
Further, the major joint 1 that this programme is provided includes interior U-shaped body 6, and sub-joint 2 includes and interior 6 sets of establishings of U bodies
The outer U-shaped body 9 closed.Interior U-shaped body 6 forms the magnetic pole contact surface 15 not exclusively disconnected, appearance and size and F after coordinating with outer U-shaped body 9
Shaped steel is mutually coordinated.
Be arranged the mating surface to be formed between interior U-shaped body 6 and outer U-shaped body 9, can the adjustment of real section of track cross spacing, and can make
It is moved along the length direction of the section of track.Magnetic levitation track is made up of the major joint section of track and the sub-joint section of track being sequentially connected.This programme
By the cooperation of interior U-shaped body and outer U-shaped body, the excessive magnetic pole strength of gapless is formd, avoids the presence of interval end face in the past,
In extraneous temperature change so that the section of track is freely expanded with heat and contract with cold and positional fluctuation, ensure that the stable fortune of magnetic suspension train
OK, energy consumption is reduced.
Further, the major joint 1 in this programme also includes leading branch groove 7, and sub-joint 2 also includes being arranged with leading branch groove 7
The guide pad 10 of cooperation.Or major joint 1 also includes guide pad 10, sub-joint 2 also includes being arranged leading for cooperation with guide pad 10
Branch groove 7.By guide pad 10 and the cooperation for leading branch groove 7, the transverse shifting of the section of track can be limited, and the section of track is longitudinally moved
It is dynamic, it ensure that the section of track freely expands with heat and contract with cold in extraneous temperature change.
Further, the major joint 1 in this programme also includes positive stop lug boss 8, and sub-joint 2 is also included to avoid positive stop lug boss 8
Clearance plane 11.Or major joint 1 also includes clearance plane 11, sub-joint 2 is also included to avoid the positive stop lug boss 8 of clearance plane 11.
Further, the order of major joint 1 and the upper member of sub-joint 2 can be, from the inner side of magnetic-levitation to outside,
Interior U-shaped body 6 is disposed with major joint 1, leads branch groove 7 and positive stop lug boss 8；Be disposed with sub-joint 2 outer U-shaped body 9,
Guide pad 10 and clearance plane 11.
By the outer magnetic wing plate 6-1 in interior U-shaped body 6, level board 6-2, interior magnetic wing plate 6-3 successively with it is outer in outer U-board
Magnetic clutch plate 9-1, middle backplate 9-2, interior magnetic clutch plate 9-3 cooperation successively, the excessive magnetic pole strength of adjacent section of track gapless is formd, protected
The uniformity of whole section of track magnetic force is everywhere demonstrate,proved so that the stress of outstanding suspension magnet is always consistent.
During to solve train operation, because joint can not provide the sky of certain freely activity with jolting for train
Gap so that the unbalance stress of magnetic suspension train, fluctuation during train operation can not be avoided.In train motion process, major joint
Between sub-joint according to it is certain it is relative move freely displacement, can realize that track expands with heat and contract with cold flexible, train fortune
Capable steady, safety and comfortable magnetic suspension joint for track panel and the track being made up of the joint.Therefore, this programme is on sub-joint 2
Elongated slot counterbore 12 is offered, major joint 1 offers screw 20 on the correspondence position of elongated slot counterbore 12, is provided with elongated slot counterbore 12
For being fixed on the attachment screw 13 of screw 20.During train rocks, the attachment screw 13 on major joint 1 can be relative
In the relative slip of elongated slot counterbore 12 on sub-joint 2., can be to the section of track by the mutual cooperation of elongated slot counterbore 12 and attachment screw 13
Transverse shifting even carries out spacing, the mobile reality when section of track expands with heat and contract with cold with temperature by attachment screw 13 in elongated slot counterbore 12
Now freely stretch, finally realize that track train operates steadily, be safe and comfortable.
Interior U-shaped body, which includes outer magnetic wing plate 6-1, the level board 6-2 being sequentially connected and interior magnetic wing plate 6-3, outer U-shaped body, to be included
Outer magnetic clutch plate 9-1, the middle backplate 9-2 and interior magnetic clutch plate 9-3 being sequentially connected.Outer magnetic wing plate 6-1, level board 6-2 and interior magnetic wing plate
6-3 is engaged with outer magnetic clutch plate 9-1, middle backplate 9-2 and interior magnetic clutch plate 9-3 successively, forms magnetic pole contact as shown in Figure 6
Face 15.Because magnetic pole contact surface 15 does not form section, so when the suspension magnet 18 on magnetic suspension train contacts by magnetic pole
It is not in " soaring " phenomenon during face 15.The junction of adjacent two section of track also exists without section all the time so that on magnetic suspension train
Suspension magnet stress it is consistent all the time, avoid suspension magnet by small vibration occurs during junction, ensure that magnetcisuspension
Stationarity, comfortableness and the security operation of floating train, while also reduce energy consumption.
Outer magnetic wing plate 6-1 and level board 6-2, level board 6-2 with interior magnetic wing plate, outer magnetic clutch plate 9-1 with middle backplate 9-2, with
And between middle backplate 9-2 and interior magnetic clutch plate 9-3 it is arc-shaped transition area.Stress collection can mainly be reduced using arc-shaped transition area
In, to realize seamlessly transitting for junction, increase magnetic floats the bonding strength of joint for track panel.
In a kind of embodiment, from Fig. 1-Fig. 7, major joint 1 from inside to outside successively by interior U-shaped body 6, lead
Branch groove 7 and positive stop lug boss 8 are formed, and interior U-shaped body is made up of outer magnetic wing plate 6-1, level board 6-2 and interior magnetic wing plate 6-3；Sub-joint
2 are made up of outer U-shaped body 9, guide pad 10 and clearance plane 11 successively from inside to outside, and outer U-shaped body 9 is by outer magnetic clutch plate 9-1, middle backplate
9-2 and interior magnetic clutch plate 9-3 compositions；By interior U-shaped body 6 and outer U-shaped body 9, guide pad 10 and lead branch groove 7, positive stop lug boss 8 with
Clearance plane 11 coordinates to realize the connection of major joint and sub-joint；Elongated slot counterbore is offered on middle backplate 9-2, guide pad 10
12, level board 6-2, lead and offer screw 20 with 12 corresponding position of elongated slot counterbore on branch groove 7, set in elongated slot counterbore 13
There is the attachment screw 13 being fixed in screw 20.The flexible clearance gap to be formed and not exclusively disconnected is connected by joint so that magnetcisuspension
Being more uniformly stressed and stably, avoiding fluctuation during train operation for floating train, improves the steady of magnetic suspension train operation
Property, comfortableness and security, while also reduce energy consumption.
This programme also provides a kind of magnetic levitation track, including above-mentioned magnetic floats joint for track panel.Specifically, magnetic levitation track is included successively
It is arranged at intervals and the end to end major joint section of track 3 and the sub-joint section of track 5, the end set of the major joint section of track 3 has the He of major joint 1
The end set of the sub-joint section of track 5 has sub-joint 2.
In this programme, magnetic levitation track is made up of the major joint section of track 3 and the sub-joint section of track 5 being sequentially connected.Major joint rail
Row and the sub-joint section of track are connected by outer connector.This programme overcomes the section of track and existed with the section of track by providing mating surface
The end face problem of joint, realize that train operation is steady, safe and comfortable.
In a kind of embodiment, the length of the major joint section of track 3 is more than the sub-joint section of track 5.The sub-joint section of track 5 is far small
When major joint 3 length of the section of track, the sub-joint section of track 5 can be described as the short sub-joint section of track 4.
When the stroke of the section of track changes between 0-20mm, the section of track should use installation form as shown in Figure 2, in Fig. 2
In, the shown major joint section of track 3 is arranged at intervals successively with the sub-joint section of track 5.When the stroke of the section of track is in 20~40mm or bigger
When changing between scope, the section of track should use installation form as shown in Figure 1, in Fig. 1, the shown major joint section of track 3 and short pair
The joint section of track 4 is arranged at intervals successively.
After major joint 1 is connected with sub-joint 2, leads branch groove 7 and be connected contact surface 14 with the junction formation of guide pad 10.Magnetic
For aerotrain when being run on the section of track, the support wheel in the wheel device 17 of magnetic suspension train is being located at linking contact surface 14 just
Top.
Guide pad with lead formed after branch groove coordinates be connected contact surface, positioned at the underface of wheel device, protect
Demonstrate,proved is aerotrain by even running during junction.
As shown in figure 3, guide pad 10 is connected contact surface 14 with leading to form after branch groove 7 coordinates.As shown in fig. 7, give
The structural representation that aerotrain is located on the magnetic suspension section of track of the present utility model is gone out, the lower section of magnetic suspension class car car body 16 is set
It is equipped with wheel device 17, suspension magnet 18 and supporting frame 19, the branch in the wheel device 17 of shown magnetic suspension train
Support wheel is not in " to fall when magnetic suspension train passes through the junction of adjacent two section of track positioned at the surface of linking contact surface 14
It is empty " phenomenon.
It is static in magnetic suspension train and when the support wheel in wheel device is contacted with the section of track, because support wheel is positioned at rank
Connect the surface of contact surface so that the active force of support wheel is acted on the two adjacent sections of track simultaneously so that active force is more equal
It is even, improve the stationarity and comfortableness of train.
A kind of magnetic suspension joint for track panel is the utility model is related to, in particular, more particularly to a kind of achievable track heat
Swollen shrinkage is flexible, train operation is steady, safety and it is comfortable in low speed magnetic suspension joint for track panel and the track that is made up of the joint.
Specific case used herein is set forth to principle of the present utility model and embodiment, above example
Explanation be only intended to help and understand method and its core concept of the present utility model.It should be pointed out that for the art
For those of ordinary skill, on the premise of the utility model principle is not departed from, some change can also be carried out to the utility model
Enter and modify, these are improved and modification is also fallen into the protection domain of the utility model claims.
Claims (9)
1. a kind of magnetic floats joint for track panel, it is characterised in that including for being respectively arranged on the opposite face of the two neighboring section of track
Major joint (1) and sub-joint (2)；
The major joint (1) and the sub-joint (2) male-female engagement.
2. magnetic according to claim 1 floats joint for track panel, it is characterised in that the major joint (1) includes interior U-shaped body, institute
Stating sub-joint (2) includes being arranged the outer U-shaped body (9) of cooperation with the interior U-shaped body (6).
3. magnetic according to claim 1 floats joint for track panel, it is characterised in that the major joint (1) also includes leading branch groove
(7), the sub-joint (2) also includes and the guide pad (10) led branch groove (7) and be arranged cooperation；
Or,
The major joint (1) also includes guide pad (10), and the sub-joint (2) also includes being arranged cooperation with the guide pad (10)
Lead branch groove (7).
4. magnetic according to claim 1 floats joint for track panel, it is characterised in that the major joint (1) also includes positive stop lug boss
(8), the sub-joint (2) is also included to avoid the clearance plane (11) of the positive stop lug boss (8)；
Or,
The major joint (1) also includes clearance plane (11), and the sub-joint (2) is also included to avoid the limit of the clearance plane (11)
Position boss (8).
5. magnetic according to claim 1 floats joint for track panel, it is characterised in that
The major joint (1) includes from the inner side of magnetic-levitation to the interior U-shaped body (6) being orderly arranged outside each, leads branch groove (7)
With positive stop lug boss (8), the sub-joint (2) include from the inner side of magnetic-levitation to the outer U-shaped body (9) being orderly arranged outside each,
Guide pad (10) and clearance plane (11).
6. the magnetic according to claim 1-5 any one floats joint for track panel, it is characterised in that is opened on the sub-joint (2)
Provided with elongated slot counterbore (12), the major joint (1) offers screw (20), institute on the correspondence position of the elongated slot counterbore (12)
State the attachment screw (13) being provided with elongated slot counterbore (12) for being fixed on the screw (20).
7. magnetic according to claim 2 floats joint for track panel, it is characterised in that the interior U-shaped body is outer including what is be sequentially connected
Magnetic wing plate (6-1), level board (6-2) and interior magnetic wing plate (6-3), the outer U-shaped body include the outer magnetic clutch plate (9- being sequentially connected
1), middle backplate (9-2) and interior magnetic clutch plate (9-3)；
The outer magnetic wing plate (6-1) and the level board (6-2), the level board (6-2) and the interior magnetic wing plate, the outer magnetic
It is arc between clamping plate (9-1) and the middle backplate (9-2) and the middle backplate (9-2) and the interior magnetic clutch plate (9-3)
Transition region.
8. a kind of magnetic levitation track, including the section of track, it is characterised in that the floating section of track of magnetic for also including connecting the two neighboring section of track connects
Head, it is that the magnetic described in claim any one of 1-7 floats joint for track panel that the magnetic, which floats joint for track panel,.
9. magnetic levitation track according to claim 8, it is characterised in that the length of the major joint section of track (3) is more than described
The sub-joint section of track (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720431403.0U CN206843866U (en) | 2017-04-21 | 2017-04-21 | A kind of magnetic floats joint for track panel and magnetic levitation track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720431403.0U CN206843866U (en) | 2017-04-21 | 2017-04-21 | A kind of magnetic floats joint for track panel and magnetic levitation track |
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| Publication Number | Publication Date |
|---|---|
| CN206843866U true CN206843866U (en) | 2018-01-05 |
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ID=60794063
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720431403.0U Active CN206843866U (en) | 2017-04-21 | 2017-04-21 | A kind of magnetic floats joint for track panel and magnetic levitation track |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106868957A (en) * | 2017-04-21 | 2017-06-20 | 山东莱钢建设有限公司 | A kind of magnetic floats joint for track panel and magnetic levitation track |
| CN110438853A (en) * | 2019-09-11 | 2019-11-12 | 天津市广山津达机械有限责任公司 | A kind of modularization F track girder |
| CN111041906A (en) * | 2019-12-12 | 2020-04-21 | 中铁二院工程集团有限责任公司 | Vibration-damping joint plate for straddle type single-track turnout |
-
2017
- 2017-04-21 CN CN201720431403.0U patent/CN206843866U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106868957A (en) * | 2017-04-21 | 2017-06-20 | 山东莱钢建设有限公司 | A kind of magnetic floats joint for track panel and magnetic levitation track |
| CN110438853A (en) * | 2019-09-11 | 2019-11-12 | 天津市广山津达机械有限责任公司 | A kind of modularization F track girder |
| CN111041906A (en) * | 2019-12-12 | 2020-04-21 | 中铁二院工程集团有限责任公司 | Vibration-damping joint plate for straddle type single-track turnout |
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