CN201292486Y - Rail switch roller slide plate - Google Patents
Rail switch roller slide plate Download PDFInfo
- Publication number
- CN201292486Y CN201292486Y CNU2008201236219U CN200820123621U CN201292486Y CN 201292486 Y CN201292486 Y CN 201292486Y CN U2008201236219 U CNU2008201236219 U CN U2008201236219U CN 200820123621 U CN200820123621 U CN 200820123621U CN 201292486 Y CN201292486 Y CN 201292486Y
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- roller
- slide plate
- rectangle hollow
- switch
- roller shaft
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Abstract
The utility model relates to a roller slide chair which comprises a roller seat, a roller, a gasket, an insertion board and two brackets, wherein the roller seat is provided with a rectangular hollow core, both sides of the rectangular hollow core are provided with a socket; the roller is connected with a roller shaft through a rolling bearing and rotates around the roller shaft; both ends of the roller shaft are fixed in the socket so that the roller is arranged in the rectangular hollow core; the gasket is supported between the roller shaft and the socket and is used for changing the height of the roller; the insertion board is connected between the roller seat and brackets; and the brackets are respectively fixed on two adjacent turnout sleepers which are fixed with a stock rail. In addition, the utility model also provides a roller slide chair arranged on the turnout sleepers and is also provided with a roller. By using the roller slide chair, tongue rails can not be in direct contact with a sliding plate in the process of switching. The tongue rails generate rolling friction so that friction force can be largely reduced, the work resistance of a rail switch is decreased, and the switching operation reliability of turnout is improved.
Description
Technical field
The utility model relates to the railway technology field, is specifically related to have the track switch roller slide plate of antifriction performance.
Background technology
In the railway field, track switch is a kind of line connection equipment that makes rolling stock change another station track over to from a station track, railway switch is the line facility of pilot engine vehicle along main track direction or side line direction running, tongue is the vitals in the railway switch, rely on pulling of tongue, train is introduced main track or side line direction, specifically is to provide turn-out track power by railway switch, promotes tongue and moves.
The track switch that railway uses is traditionally adopted slip slide plate (flat slide plate), and in a changing points process, a side tongue moves to closely connected position by scolding to off normal, and the opposite side tongue is moved to scold by closely connected position and offs normal simultaneously.Switch structure schematic diagram as shown in Figure 1, train enters track switch by stock rail 5, and stock rail 5 is the non-moving track in the switch structure, when tongue 1 is in closely connected, should guarantee with stock rail 5 closely connected.Change its travel direction by the position that changes tongue 1, two tip of a root rails 1 are supported on the sliding bed platform 3 in the track switch, Fig. 3 is flat slide plate schematic diagram, sliding bed platform 3 is positioned at the top of base plate 2 (being fixed on the switch tie), see that Fig. 4 is a sectional drawing, base plate 2 passes through fixedly stock rail 5 of iron seat 6, and tongue 1 is supported on the sliding bed platform 3 always during slip.Concern enlarged drawing referring to base plate among Fig. 3 and the position of sliding the bed platform, slide on sliding bed platform 3 at tongue 1 under the promotion of railway switch 4, one of them tongue 1 when sliding into bed platform 3 near a side of stock rails 5 and stock rail 5 closely connected, another tongue 1 slide into away from a side of stock rail 5 and stock rail 5 scold from, railway switch 4 needs overcome friction to promote tongue 1 and stock rail 5 closely connected (opposite side tongue 1 scold from) in sliding process.Raising along with train speed, the number of track switch increases gradually, the length of tongue 1 and weight increase, frictional force increases thereupon, or the friction surface insufficient lubrication, or reason such as railway switch motive force deficiency, the opening of a point (producing not enough displacement) appears sometimes, to train by bringing potential safety hazard, so frictional resistance excessive be one of track switch technical problem anxious to be solved.
People have taked various friction-reducing measures to the slip slide plate for a long time, for example the most of turnout baseplate of China adopts the mode that regularly is coated with lubrication oil or lead powder lubricated, in recent years also development and application multiple technologies attempt to replace conventional method, reduce friction factor, reduce and safeguard.As adopt sliding bed table top spraying antifriction material, electricity (chemistry) coating high hard antifriction material or composite material and be applied to speed-raising, Guangzhou-Shenzhen railway and Qinhuangdao Shenyang Special Passenger Line, though obtain certain effect, not obvious.Because track switch is used in the open, these measures often are subject to weather, such environmental effects, effect instability, not lasting.
The utility model content
The purpose of this utility model provides track switch roller slide plate, tongue is supported by roller in the turn-out track process, directly do not contact with sliding bed platform, produce rolling friction between tongue and roller, can reduce frictional force greatly, reduce the railway switch working resistance, strengthen switch point housing, improve the reliability of changing points operation.
For achieving the above object, the utility model adopts following technical scheme:
Track switch roller slide plate, this slide plate comprises:
Two supports are separately fixed on two adjacent switch ties, are fixed with stock rail on the switch tie;
Sliding bed platform is positioned on the described switch tie, and upper support has tongue;
Roller mount has rectangle hollow, and described rectangle hollow both sides are provided with groove;
Plate is connected between roller mount and each support;
Roller connects roller shaft by rolling bearing, and the two ends of described roller shaft are fixed in the described groove, make described roller place rectangle hollow;
Shim pack comprises pad or the different pad of a plurality of thickness that several thickness are identical, and described pad is positioned at the below at described roller shaft two ends, by the number of change pad or the thickness of pad, makes the height of described roller be higher than the described height of sliding the bed platform.
Wherein, described roller mount has one or two rectangle hollow, and the both sides of each rectangle hollow are provided with groove, and described roller is one or two, is placed in described rectangle hollow respectively.
Wherein, described groove is a rectangular recess, and the bottom is provided with screw, and the two ends of roller shaft are the rectangle sheet, and the rectangle sheet is provided with screw, by screw described roller shaft is fixed in the groove.
Wherein, described support is fixed by bolt and switch tie, and several bolts hole are arranged on the support.
Wherein, the roller of close stock rail one side is 1mm apart from gap, tongue base, the high 3～4mm of height of the described sliding bed platform of the aspect ratio of described roller.
The utility model also provides another kind of track switch roller slide plate, and this slide plate comprises:
Base plate is installed on the switch tie, and described base plate passes through fixedly stock rail of iron seat;
Sliding bed platform is positioned on the described base plate, and upper support has tongue;
Lower carriage has rectangle hollow, and two upper lateral parts have deep-slotted chip breaker, and described lower carriage is fixed on the base plate and with sliding bed platform road along the line direction and vertically arranges;
Roller connects roller shaft by rolling bearing, and described roller shaft is an eccentric shaft;
Upper bracket, has rectangle hollow, two side bottoms have deep-slotted chip breaker, the deep-slotted chip breaker of described upper bracket is passed at the two ends of described roller shaft, make described roller place the rectangle hollow of upper bracket, on lower carriage, roller shaft is stuck in the deep-slotted chip breaker of the deep-slotted chip breaker of described upper bracket and lower carriage described upper bracket, by housing screw described roller shaft is fixed by screw.
Wherein, have two rectangle hollow on the described upper bracket, have two rectangle hollow on the lower carriage, described roller is two, is placed in the rectangle hollow of upper bracket respectively.
Wherein, an end of described roller shaft is the turret head roller shaft.
Wherein, described roller with respect to the height adjustment range of sliding bed platform is :-0.5mm～6.5mm.
The track switch roller slide plate that utilizes the utility model to provide has following beneficial effect:
1) regulating the roller height makes roller a little more than sliding bed countertop, tongue is supported by roller in the changing points process, do not contact with sliding bed platform, only contact with roller, produce rolling friction between tongue and roller, because being the friction factor and the roller surface of the inner rolling bearing of roller, the friction factor of rolling friction rolls resistance friction factor sum, numerical value is very little, and (general sliding friction friction factor is greater than 0.25, the coefficient of rolling friction sum is about 0.04), therefore can reduce frictional force (differing 6.25 times) greatly, reduce the railway switch working resistance, strengthen switch point housing, improve the reliability of changing points operation;
2) because tongue broke away from roller in closely connected when position, be supported on fully on the sliding bed platform, so increase roller and do not influence the track switch original structure, track switch safety is had no adverse effect;
3) longer in large size code channel trouble, weight and frictional resistance are big, and the frictional resistance problem is outstanding relatively, therefore for the large size code channel trouble of raising speed railway or Line for Passenger Transportation, adopt the meaning of roller slide plate more obvious;
4) since after adopting the roller slide plate a sliding bed platform need not to be coated with oil lubrication, reduced the manual maintenance workload, therefore relatively be applicable to the labour cost height, climatic environment is abominable, remote, inconvenient maintenance is regional.
Description of drawings
Fig. 1 is the existing switch structure schematic diagram that adopts the classic flat-plate slide plate;
Fig. 2 is railway switch and a tongue part partial enlarged drawing among Fig. 1;
Fig. 3 is flat slide plate schematic diagram;
Fig. 4 is the sectional drawing along A-A line among Fig. 3;
Fig. 5 is for being equipped with the track switch schematic diagram of D type roller slide plate among the embodiment 1;
Fig. 6 is the enlarged drawing of D type two-wheel roller slide plate among the embodiment 1;
Fig. 7 is the sectional drawing along B-B direction among Fig. 6;
Fig. 8 is the sectional drawing along D-D direction among Fig. 6;
Fig. 9 is the two roller slide plate scheme of installations of the D type among the embodiment 1;
Figure 10 is a D type list roller slide plate scheme of installation among the embodiment 1;
Figure 11 is the lateral view that D type roller slide plate is installed among the embodiment 1;
Figure 12 is for being equipped with the track switch schematic diagram of S type roller slide plate among the embodiment 2;
Figure 13 is the scheme of installation of the two roller slide plates of S type among the embodiment 2;
Figure 14 is the scheme of installation of S type list roller slide plate among the embodiment 2;
Figure 15 is the structure chart of the two roller slide plates of S type among the embodiment 2;
Figure 16 is the lateral view of the two roller slide plates of S type among the embodiment 2;
Figure 17 is the roller shaft schematic diagram among the embodiment 2.
Among the figure: 1, tongue; 2, base plate; 3, sliding bed platform; 4, railway switch; 5, stock rail; 6, iron seat; 7, the two roller slide plates of D type; 7 ', D type list roller slide plate; 701, roller mount; 702, groove; 703, roller; 704, roller shaft; 705, pad; 706, plate; 707, support; 708, rubber pad; 709, bolt; 710, screw; 8, the two roller slide plates of S type; 8 ', S type list roller slide plate; 801, base plate; 802, lower carriage; 803, the deep-slotted chip breaker of lower carriage; 804, roller; 805, eccentric shaft; 806, upper bracket; 807, the deep-slotted chip breaker of upper bracket; 808, housing screw.
The specific embodiment
Railroad switch sliding bed of the present utility model is described as follows in conjunction with the accompanying drawings and embodiments.
Be illustrated in figure 5 as the integral installation schematic diagram of the track switch roller slide plate that present embodiment provides, track switch roller slide plate is installed between the switch tie in the present embodiment, and present embodiment is called D type roller slide plate.D type roller slide plate comprises 7 ' two kinds of the two roller slide plates 7 of D type and D type list roller slide plates.D type roller slide plate is installed in the point tongue section, road along the line length direction is pressed the switch tie interval mounted in pairs of some, D type two-wheel roller slide plate 7 is set at tongue 1 tip usually, D type single-wheel roller slide plate 7 ' is set thereafter, because most advanced and sophisticated displacement is big, the stroke that D type single-wheel roller slide plate 7 ' provides is not enough.Mounting turnout has 7,4 D types of 2 D type two-wheel roller slide plates single-wheel roller slide plate 7 ' among Fig. 5.Along with the track switch number increases, length increases, the also corresponding increase of quantity of D type roller slide plate.
Fig. 6 is the enlarged drawing of D type two-wheel roller slide plate, D type two-wheel roller slide plate 7 is to comprise two complete symmetrical structures with the difference of D type list roller slide plate 7 ', one of them structure constitutes D type list roller slide plate 7 ', symmetrical structure is not limited to two in the present embodiment, can be set to several according to the stroke of tongue 1, this structure comprises: roller mount 701 has rectangle hollow, these rectangle hollow both sides are provided with groove 702, and roller mount 701 plays support roller 703; Roller 703 connects roller shaft 704 by rolling bearing, and roller 703 rotates around roller shaft 704 by rolling bearing, and the two ends of roller shaft 704 are fixed in the groove 702, make roller 703 place the rectangle hollow of roller mount 701; Pad 705 is supported on (see figure 7) between roller shaft 704 and the groove 702, changes the height of roller 703 by the thickness that changes pad 705; Plate 706 is connected between roller mount 701 and the support 707 (seeing Figure 11), plays to connect and the elastic buffer effect; Two supports 707, be separately fixed on two adjacent switch ties, be fixed with stock rail 5 on the switch tie, support 707 is used for fixing slide plate and regulates horizontal position, roller road along the line in the slide plate, also be lined with rubber pad 708 in the middle of when present embodiment medium-height trestle 707 is connected with switch tie, a side of plate 706 is connected on this support 707, and the opposite side of plate 706 is by bolt group and roller mount 701, as shown in Figure 8,709 plate 706 is fixing with roller mount 701 by tighting a bolt.
Because base plate 2 tops are equipped with the sliding bed platform 3 that supports tongue 1, after being fixed on the D type roller slide plate in the present embodiment between two adjacent switch ties, make the height of roller 703 be higher than the height of sliding bed platform 3 by the height that changes pad 705, like this when turn-out track, tongue 1 is under the power that railway switch 4 provides, in moving process, on roller 703, slide, produce rolling friction, so roller 703 is the parts that play a major role in the utility model roller slide plate.
In the present embodiment groove 702 is set to rectangular recess, the bottom is provided with screw, the two ends of roller shaft 704 are set to the rectangle sheet, the rectangle sheet is provided with screw, has screw on the pad 705, as shown in Figure 7, pass the screw of rectangle sheet, the screw and the groove 702 bottom screws of pad 705 respectively, roller shaft 704 is fixed in the groove 702 by screw 710.
D type roller slide plate in the present embodiment can be installed with new track switch, also can install on existing track switch, and the roller slide plate is installed in the back that either way should the mounting turnout adjustment finishes.
D type roller slide plate is by layout shown in Figure 5, and D type two-wheel roller slide plate 7 is put near tongue 1 tip, the spacing that the roller slide plate is generally got 3～5 switch ties 2 at interval.
D type roller slide plate is installed in the present embodiment, should be checked the gap between tongue bottom surface and each the sliding bed countertop, guarantee to scold from tongue to be supported on the roller, do not contact with sliding bed platform.
The track switch roller slide plate that present embodiment provided is installed on the switch tie, and present embodiment is called S type roller slide plate,
Be the integral installation schematic diagram of the track switch roller slide plate that present embodiment provided as shown in figure 12, track switch roller slide plate is installed on the switch tie in the present embodiment, and present embodiment is called S type roller slide plate.S type roller slide plate comprises 8 ' two kinds of the two roller slide plates 8 of S type and S type list roller slide plates.S type roller slide plate is installed in the point tongue section, road along the line length direction is pressed the switch tie interval mounted in pairs of some, S type two-wheel roller slide plate 8 is set at tongue 1 tip usually, S type single-wheel roller slide plate 8 ' is set thereafter, because most advanced and sophisticated displacement is big, the stroke that S type single-wheel roller slide plate 8 ' provides is not enough.Mounting turnout has 8,2 S types of 2 S type two-wheel roller slide plates single-wheel roller slide plate 8 ' among Figure 12.Along with the track switch number increases, length increases, the also corresponding increase of quantity of S type roller slide plate.
Figure 15 is the structure chart of S type two-wheel roller slide plate, S type two-wheel roller slide plate 8 is to comprise two complete symmetrical structures with the difference of S type single-wheel roller slide plate 8 ', two-wheel roller slide plate 8 contains two rollers, and single-wheel roller slide plate 8 ' contains a roller, above-mentioned symmetrical structure is not limited to two in the present embodiment, can be set to several according to the stroke of tongue 1, this structure comprises: base plate 801, be installed on the switch tie, two row's screwed holes are arranged on the base plate 801, by iron seat 6 stock rail 5 is fixed on an end of base plate 801, a sliding bed platform 3 that supports tongue 1 is set on the base plate 801, identical with the sliding bed platform effect on the common switch tie; Lower carriage 802 is used for supporting and fixed idler whell 804, and lower carriage 802 has rectangle hollow, and two upper lateral parts have deep-slotted chip breaker 803, and lower carriage 802 is fixed on the base plate 801 and vertically arranges with sliding bed platform 3 road along the line directions; Roller 804 connects roller shaft by rolling bearing, and roller 804 rotates around roller shaft by rolling bearing, and roller shaft is an eccentric shaft 805; Upper bracket 806, be used for fixing roller 804, has rectangle hollow, two side bottoms have deep-slotted chip breaker 807, the deep-slotted chip breaker 807 of upper bracket 806 is passed at the two ends of eccentric shaft 805, make roller 804 place the rectangle hollow of upper bracket 806, upper bracket 806 by screw on lower carriage 802, the profile phase of upper bracket 806 and lower carriage 802 together, therefore roller 804 also places the rectangle hollow of lower carriage 802, simultaneously in the deep-slotted chip breaker 803 of eccentric shaft 805 deep-slotted chip breaker 807 that is stuck in upper bracket 806 and lower carriage 802, eccentric shaft 805 is fixing by housing screw 808.
Eccentric shaft 805 in the present embodiment is the turret head roller shaft, because roller shaft is eccentric shaft 805 structures in the present embodiment, as shown in figure 17, according to the characteristics of eccentric shaft as can be known, eccentric shaft 805 rotates the height that can regulate roller, one end of roller shaft has turret head, and the available wrench in loosening pressed screw 808 backs rotates this turret head and regulates the roller height.Slide a countertop height and be set to 0, then roller height adjustment range-0.5mm～6.5mm.As shown in figure 16, roller 804 subscripts-0.5,1.5,4.5 and 6.5, when the graduation mark that expression will change sign forwarded level to, roller was respectively with the height of sliding bed platform relatively-0.5mm, 1.5mm, 4.5mm and 6.5mm.
Horizontal position, S type roller slide plate road along the line is by the slotted hole position adjustments of screwed hole on the base plate and upper and lower support.Tighten housing screw 808 and can fix upper and lower support, simultaneously can the pinch rollers axle, prevent that roller shaft from rotating.
The mounting method of D type roller slide plate is similar among the installation of S type roller slide plate and the embodiment 1, and S type roller slide plate is installed on the switch tie, need change the traditional slide plate on the relevant position when installing on existing track switch.
The roller 804 of S type roller slide plate is identical with D type roller slide plate with respect to the height dimension of sliding bed platform with the gap size of tongue 1 and roller 804.When regulating roller 804 height, loosening pressed screw 808 earlier, rotation roller axle turret head then, adjust the roller height according to scale on the roller 804 and pointer after, tighten housing screw 808, the moment of torsion in the present embodiment is 70Nm.After S type roller slide plate is installed in the present embodiment, should check the gap between tongue bottom surface and each the sliding bed countertop, guarantee to scold from tongue to be supported on the roller, not contact with sliding bed platform.
Above embodiment only is used to illustrate the utility model; and be not to this novel restriction; the those of ordinary skill in relevant technologies field; under the situation that does not break away from these novel spirit and scope; can also make various variations and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (9)
1, track switch roller slide plate is characterized in that, this slide plate comprises:
Two supports are separately fixed on two adjacent switch ties, are fixed with stock rail on the switch tie;
Sliding bed platform is positioned on the described switch tie, and upper support has tongue;
Roller mount has rectangle hollow, and described rectangle hollow both sides are provided with groove;
Plate is connected between roller mount and each support;
Roller connects roller shaft by rolling bearing, and the two ends of described roller shaft are fixed in the described groove, make described roller place rectangle hollow;
Shim pack comprises pad or the different pad of a plurality of thickness that several thickness are identical, and described pad is positioned at the below at described roller shaft two ends, by the number of change pad or the thickness of pad, makes the height of described roller be higher than the described height of sliding the bed platform.
2, track switch roller slide plate as claimed in claim 1 is characterized in that described roller mount has one or two rectangle hollow, and the both sides of each rectangle hollow are provided with groove, and described roller is one or two, is placed in described rectangle hollow respectively.
3, track switch roller slide plate as claimed in claim 1 is characterized in that described groove is a rectangular recess, and the bottom is provided with screw, and the two ends of described roller shaft are the rectangle sheet, and the rectangle sheet is provided with screw, by screw described roller shaft is fixed in the groove.
4, track switch roller slide plate as claimed in claim 1 is characterized in that described support is fixed by bolt and switch tie, and several bolts hole are arranged on the described support.
5, track switch roller slide plate as claimed in claim 1 is characterized in that, the roller of close stock rail one side is 1mm apart from gap, tongue base, the high 3～4mm of height of the described sliding bed platform of the aspect ratio of described roller.
6, track switch roller slide plate is characterized in that, this slide plate comprises:
Base plate is installed on the switch tie, and described base plate passes through fixedly stock rail of iron seat;
Sliding bed platform is positioned on the described base plate, and upper support has tongue;
Lower carriage has rectangle hollow, and two upper lateral parts have deep-slotted chip breaker, and described lower carriage is fixed on the base plate and with sliding bed platform road along the line direction and vertically arranges;
Roller connects roller shaft by rolling bearing, and described roller shaft is an eccentric shaft;
Upper bracket, has rectangle hollow, two side bottoms have deep-slotted chip breaker, the deep-slotted chip breaker of described upper bracket is passed at the two ends of described roller shaft, make described roller place the rectangle hollow of upper bracket, on lower carriage, roller shaft is stuck in the deep-slotted chip breaker of the deep-slotted chip breaker of described upper bracket and lower carriage described upper bracket, by housing screw described roller shaft is fixed by screw.
7, track switch roller slide plate as claimed in claim 6 is characterized in that, has two rectangle hollow on the described upper bracket, has two rectangle hollow on the lower carriage, and described roller is two, is placed in the rectangle hollow of upper bracket respectively.
8, track switch roller slide plate as claimed in claim 6 is characterized in that, an end of described roller shaft is the turret head roller shaft.
9, track switch roller slide plate as claimed in claim 8 is characterized in that, described roller with respect to the height adjustment range of sliding bed platform is :-0.5mm～6.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201236219U CN201292486Y (en) | 2008-11-10 | 2008-11-10 | Rail switch roller slide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201236219U CN201292486Y (en) | 2008-11-10 | 2008-11-10 | Rail switch roller slide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201292486Y true CN201292486Y (en) | 2009-08-19 |
Family
ID=41005955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201236219U Expired - Lifetime CN201292486Y (en) | 2008-11-10 | 2008-11-10 | Rail switch roller slide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201292486Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103814175A (en) * | 2011-08-18 | 2014-05-21 | 福斯罗科吉富股份有限公司 | Roller fixing device for a steering assistance system |
| CN103924487A (en) * | 2014-03-12 | 2014-07-16 | 中铁宝桥集团有限公司 | Turnout switch roller mounting device and operating method thereof |
| CN103806350B (en) * | 2014-03-11 | 2015-12-09 | 中国铁建重工集团有限公司 | A kind of roller arrangement being convenient to adjust |
-
2008
- 2008-11-10 CN CNU2008201236219U patent/CN201292486Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103814175A (en) * | 2011-08-18 | 2014-05-21 | 福斯罗科吉富股份有限公司 | Roller fixing device for a steering assistance system |
| CN103814175B (en) * | 2011-08-18 | 2015-11-25 | 福斯罗科吉富股份有限公司 | A kind of positioner for locating at least one roller and use the steering assist system of roller |
| CN103806350B (en) * | 2014-03-11 | 2015-12-09 | 中国铁建重工集团有限公司 | A kind of roller arrangement being convenient to adjust |
| CN103924487A (en) * | 2014-03-12 | 2014-07-16 | 中铁宝桥集团有限公司 | Turnout switch roller mounting device and operating method thereof |
| CN103924487B (en) * | 2014-03-12 | 2016-04-27 | 中铁宝桥集团有限公司 | Turnout switch roller erecting device and method of work |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090819 |