CN113774728A - Eccentric height-adjustable turnout roller device - Google Patents
Eccentric height-adjustable turnout roller device Download PDFInfo
- Publication number
- CN113774728A CN113774728A CN202111073983.8A CN202111073983A CN113774728A CN 113774728 A CN113774728 A CN 113774728A CN 202111073983 A CN202111073983 A CN 202111073983A CN 113774728 A CN113774728 A CN 113774728A
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- roller
- roller body
- body frame
- eccentric
- mandrel
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B7/00—Switches; Crossings
- E01B7/02—Tongues; Associated constructions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The eccentric height-adjustable turnout roller device comprises a roller body frame and a roller body arranged in the roller body frame, wherein the roller body consists of a core shaft, a core shaft outer bearing and a bearing outer roller; the mandrel is of an eccentric mandrel structure; the roller realizes the change adjustment of the roller body height through the eccentric core shaft. According to the invention, each single roller body can realize stepped continuous height adjustment, meanwhile, the ballast blocking structural design has a roller antifouling function, the mandrel end structure of an octagonal structure has no shaking displacement in the use process of the roller, the roller and the shoulder block have an anti-blocking function, the structural support is stable, and the operation is safe and reliable.
Description
Technical Field
The invention belongs to the technical field of relevant parts for moving point rails of a track switch, and particularly relates to an eccentric height-adjustable turnout roller device.
Background
At present, a switch realizes the conversion of railway track lines through the movement of switch points, and a switch point conversion mechanism needs to overcome conversion resistance in the action of pulling the points. The switch rail conversion resistance comprises two parts of bending counter force generated by the elastic deformation of the switch rail and friction resistance between the switch rail and the supporting base plate, and the switch operation reliability can be improved by reducing the switch conversion resistance. The most direct way to reduce the frictional resistance between the point rail and the support shim is to reduce the coefficient of friction, which is generally done by two types of measures: one is to set antifriction coating between the switch rail and the supporting cushion plate to reduce the sliding friction coefficient, such as oil coating or other antifriction materials, which is simple and effective, but the aging of the rubber elastic element of the turnout base plate can be accelerated by materials such as grease, etc., which affects the service life of the base plate; another type is to change the sliding friction of the switch rail into rolling friction by a special device, such as a turnout roller device, so as to reduce the friction resistance.
In the prior art, the height-adjustable structure of the roller body in the existing turnout roller device usually adopts an inclined surface or a height-adjustable gasket to realize the height support change adjustment of the roller body. The realization of the above-mentioned mode of regulation usually needs more than one roller body, needs a plurality of roller bodies to set up in a row just can realize heightening step by step promptly, is fit for the longer, great occasion of roll loading face and uses, and to the occasion that the roll loading face is shorter, then can't realize the change of heightening of roller body. In view of this, the following technical solutions are proposed.
Disclosure of Invention
The technical problems solved by the invention are as follows: the utility model provides a but eccentric formula heightening switch running roller device adopts the rotation of eccentric core shaft supporting roller, realizes the use demand that the step height-adjusting of a running roller body roll loading end, solves the unable technical problem that realizes heightening of narrow space occasion running roller body.
The technical scheme adopted by the invention is as follows: the eccentric height-adjustable turnout roller device comprises a roller body frame and a roller body arranged in the roller body frame, wherein the roller body consists of a core shaft, a core shaft outer bearing and a bearing outer roller; the mandrel is of an eccentric mandrel structure; the roller realizes the change adjustment of the roller body height through the eccentric core shaft.
In the above technical solution, further: the roller body frame is provided with a ballast blocking plate; the ballast blocking plate and the roller body frame are vertically welded and fixedly connected with each other to form a whole or are integrally formed to obtain the track roller.
In the above technical solution, further: the shaft end of the mandrel is of an octagonal structure; the mandrel limits the displacement of the roller body in the roller body frame through an octagonal structure.
In the above technical solution, further: the mandrel is provided with a boss; the boss is arranged at the outer side of the shaft end of the roller; the lug boss is matched with a retaining shoulder; the roller body frame is separated from the retaining shoulder; a sealing ring is arranged between the inner side of the retaining shoulder and the outer side of the roller.
In the above technical solution, further: the longitudinal section of the retaining shoulder is provided with a first-order lug boss ring structure; the first-order boss ring structure is arranged on the inner side of the shaft end of the retaining shoulder, and a sealing ring is mounted at the boss concave part of the first-order boss ring structure in a matched mode.
In the above technical solution, further: the sealing ring is a V-shaped sealing ring which is provided with two bifurcated lips; one of the forked lips is of a wedge-shaped structure, and the other forked lip is of a right-angled trapezoid structure; the forked lip of the right-angle trapezoid structure is attached to a first-order lug boss ring structure of the adaptive blocking shoulder; the outermost sides of the diverging lips of the wedge-shaped structure are located towards the roller axle end face.
In the above technical solution, further: the roller body frame comprises an upper roller body frame and a lower roller body frame; the upper roller body framework and the lower roller body framework are spliced to form an octagonal hole; the upper roller body frame and the lower roller body frame compress and fix the core shaft in the octagonal hole to realize the fixed installation of the roller body.
In the above technical solution, further: the roller body frame is fixed by combining a fixing bolt with a Luodi firm anti-loosening washer.
In the above technical solution, further: the bearing is a composite self-lubricating bearing; the composite self-lubricating bearing is provided with an axial gap; the composite self-lubricating bearing is a CSB-50 lead-free self-lubricating bearing.
Compared with the prior art, the invention has the advantages that:
1. according to the eccentric core shaft structure, the eccentric core shaft can adjust the heights of the rollers step by step when the rollers outside the core shaft rotate around the eccentric core shaft, if the height of the top surface of the sliding bed table is set to be 0, the height adjusting range of the antifriction rollers is five-step height of 0-1-3-5-6mm, and the requirement of adjusting and changing the installation height of a turnout antifriction roller device on site is met.
2. The eccentric height-adjustable turnout roller device can well protect the roller body from being eroded by mud through the ballast blocking plate; the ballast blocking plate structure with physical protection enables the roller body to be maintained to be used in a clean environment, the service life is long, and stable displacement of the switch rail is guaranteed.
3. The central spindle with the octagonal structure is used for realizing the compressing, positioning and fixed installation of the shaft end of the roller body in the roller body frame, so that the roller body is firmly fixed in the roller body frame, and the roller body does not change in height under the action of bearing gravity, thereby not influencing the moving stability of the switch rail.
4. The core shaft of the roller body is designed in a step mode, and the boss of the core shaft can be provided with the retaining shoulder, so that the roller and the retaining shoulder are effectively prevented from being clamped; the end part of the mandrel is of an eight-direction structure, and the mandrel can be firmly fixed by combining the combined action of the gasket group, so that the roller body is prevented from displacing in the frame, and the rolling friction of the roller body is ensured to operate stably and durably.
5. The invention adopts the combined working action of the fixing bolt and the Luodi firm anti-loose washer, avoids the bolt loosening phenomenon of the eccentric adjustable high turnout roller device in the use process, and has reliable and stable use and durable operation.
6. The bearing adopts the composite self-lubricating bearing, and the bearing is provided with the axial gap, so that the bearing is simple and convenient to install, excellent in self-lubricating effect and long in service life.
Drawings
FIG. 1 is a front view of the eccentric height adjustable turnout roller device of the present invention;
FIG. 2 is a top view of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic view of the structure of the roller body according to the present invention;
FIG. 4 is a schematic view of a mandrel construction of the present invention;
FIG. 5 is a side view of FIG. 4;
FIG. 6 is a schematic view of a bearing structure according to the present invention;
FIG. 7 is a side view of FIG. 6;
FIG. 8 is a front view of the lower roller body frame of the present invention;
FIG. 9 is a top view of FIG. 8;
fig. 10 is a cross-sectional view a-a of the lower roller body frame of fig. 9;
FIG. 11 is a front elevational view of the upper roller body frame in accordance with the present invention;
FIG. 12 is a top view of the upper roller body frame of FIG. 11;
FIG. 13 is a schematic view of the present invention in use;
in the figure: 1-roller body frame, 2-roller body and 3-ballast blocking plate; 201-mandrel, 202-bearing, 203-roller; 4-octagonal structure, 6-boss, 7-shoulder block and 8-sealing ring; 701-a first-order lug boss ring structure; 801-wedge structure, 802-right trapezoid structure; 9-fixing the bolt; 101-upper roller body frame, 102-lower roller body frame; 10-a stock rail, 11-a point rail, 12-a roller slide plate and 13-an eccentric height-adjustable turnout roller device; 2021-gap seam.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 13 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The eccentric height-adjustable turnout roller device (as shown in fig. 1 and 2) comprises a roller body frame 1 and a roller body 2 arranged in the roller body frame 1.
(as shown in fig. 3) the roller body 2 is composed of a core shaft 201, a bearing 202 outside the core shaft 201 and a roller 203 outside the bearing 202.
The mandrel 201 is an eccentric mandrel structure; the roller 203 realizes the height change adjustment of the roller body 2 through the eccentric mandrel 201.
According to the eccentric mandrel 201 structure, the eccentric mandrel can adjust the height of the roller continuously in a step mode when the roller outside the mandrel rotates around the eccentric mandrel 201 according to the characteristics of the eccentric shaft: if the height of the top surface of the sliding bed table is set to be 0, the eccentricity of the mandrel is 3mm, and the outer diameter of the roller is 48.5mm, for example, the height adjusting range of the antifriction roller can realize 0-1-3-5-6mm five-level height adjustment, and the on-site installation height adjusting and changing requirements of the turnout antifriction roller device are met.
(as shown in fig. 1), the roller body frame 1 is provided with a ballast blocking plate 3. The ballast blocking plate 3 is used for blocking slurry and preventing the slurry from eroding the roller body 2. The ballast blocking plate 3 and the roller body frame 1 are vertically welded and fixedly connected with each other to form a whole or are integrally formed to obtain the roller body frame.
The eccentric height-adjustable turnout roller device 13 can well protect the roller body 2 from being eroded by mud through the ballast blocking plate 3; the utility model provides a 3 structures of fender tiny fragments of stone, coal, etc. of physics protection for roller body 2 can maintain under clean environment and use, and the life-span is lasting. Through keeping off tiny fragments of stone, coal, etc. board 3, can also effectively keep off roller body 2 and roll obstructed, avoid roller body coefficient of friction's increase, guarantee roller body 2 and effectively reach the purpose that reduces conversion frictional resistance.
(as shown in fig. 1 and 5) in the above embodiment, further: the shaft end of the mandrel 201 is of an octagonal structure 4; the mandrel 201 limits the displacement of the roller body 2 in the roller body frame 1 through the octagonal structure 4.
The invention uses the mandrel 201 with an octagonal structure to realize the compressing, positioning and fixed installation of the shaft end of the roller body 2 in the roller body frame 1, so that the roller body 2 is firmly fixed in the roller body frame, and the roller body 2 does not generate height change under the action of bearing gravity, thereby not influencing the movement stability of the switch rail.
In the above embodiment, further: the mandrel 201 is provided with a boss 6 (as shown in fig. 4); the boss 6 is arranged at the outer side of the shaft end of the roller 203; the boss 6 is matched with a retaining shoulder 7; the roller 203 is separated by the retaining shoulder 7, and meanwhile, the retaining shoulder 7 also separates the roller body frame 1; a sealing ring 8 (combined with figure 3) is arranged between the inner side of the retaining shoulder 7 and the outer side of the roller 203.
The mandrel 201 of the roller body 2 is designed in a step mode, so that the roller 203 and the retaining shoulder 7 can be prevented from being clamped, and the mandrel 201 can be firmly fixed by the octagonal structure at the end part of the mandrel 201. Simultaneously, combine the combined action of sealing washer 8, further effectively prevent roller body 2 stained or card extremely.
In the above embodiment, further: a first-order lug boss ring structure 701 is arranged outside the longitudinal section of the retaining shoulder 7; the boss depth of the first-order boss ring structure 701 is matched with the thickness of the sealing ring 8; the outermost periphery of the first-order boss ring structure 701 has an outer diameter equal to the outer diameter of the roller body 203. The first-order boss ring structure 701 is located at the inner side of the shaft end of the retaining shoulder 7 to prevent outside sludge from polluting the roller body 2, and the sealing ring 8 is installed at the boss concave part of the first-order boss ring structure 701 in a matched mode.
(see fig. 3) in the above embodiment, further: the sealing ring 8 is a V-shaped sealing ring which is provided with two bifurcated lips; one of the bifurcated lips is a wedge-shaped structure 801 and the other bifurcated lip is a right-angled trapezoidal structure 802; the forked lips of the right-angle trapezoid structure 802 fit with the first-order boss ring structure 701 of the adapter shoulder 7; the outermost sides of the diverging lips of wedge 801 are disposed toward the axial end face of roller 203.
The V-shaped sealing ring has the functions of packing and sealing, has good sealing performance, allows a certain amount of eccentric load and eccentric motion, resists impact pressure and is durable.
(as shown in fig. 1, 8, 9, 10, 11, 12) in the above embodiment, further: the roller body frame 1 comprises an upper roller body frame 101 and a lower roller body frame 102; the upper roller body frame 101 and the lower roller body frame 102 are provided with octagonal holes 103 in a splicing manner; the upper roller body frame 101 and the lower roller body frame 102 press and fix the mandrel 201 in the octagonal hole 103, so that the roller body 2 is fixedly installed.
(as shown in fig. 6 and 7) in the above embodiment, further: the bearing 202 is a compound self-lubricating bearing. The composite self-lubricating bearing is provided with an axial gap 2021; the composite self-lubricating bearing is a CSB-50 lead-free self-lubricating bearing.
The axial gap 2021 facilitates assembly of the bearing. The CSB-50 lead-free self-lubricating bearing is environment-friendly in material and durable in use.
Wherein the composite means that the self-lubricating bearing is preferably compounded by high-quality carbon structural steel materials and spherical bronze powder materials. The composite self-lubricating bearing is oil-free lubrication or less oil lubrication, and can be maintained without or with less maintenance when in use. The CSB-50 leadless self-lubricating bearing is characterized by that it is made up by rolling self-lubricating material or is sealed by using lubricating agent in advance, so that it can implement fine lubrication property, and its bearing capacity is strong and deformation-resisting property. The problem that the anti-friction roller is easy to block due to unsmooth rotation can be effectively solved.
Meanwhile, the composite self-lubricating bearing has the advantages of good wear resistance, small friction coefficient and long service life. The bearing has proper elastic plasticity, can distribute stress on a wider contact surface and improves the bearing capacity of the bearing. The static and dynamic friction coefficients are similar, so that the working precision of the machine is ensured. It can reduce vibration of machine, reduce noise, prevent pollution and improve working condition. In the operation process, the transfer film can be formed to play a role in protecting the grinding shaft. The thin-wall structure of the composite self-lubricating bearing is light in weight and can reduce the mechanical volume. The back of the material can be used in corrosive medium due to electroplating of other metals; is suitable for the sliding part between the roller 203 and the mandrel 201.
(as shown in fig. 1) in the above embodiment, further: the roller body frame 1 is fixed by combining a fixing bolt 9 with a Luodi lock washer (not shown in figure 2).
The invention adopts the fixing bolt 9 to combine with the Luo Di firm anti-loose washer to work together, thereby avoiding the bolt loosening phenomenon of the eccentric height-adjustable turnout roller device in the use process, and the device is reliable and stable in use and can operate durably.
The working principle of the invention is as follows: fig. 13 is a schematic view of the installation of the eccentric height adjustable switch roller assembly 13 of the present invention on the switch as a whole. In this embodiment, the eccentric height-adjustable switch roller device 13 is installed on the switch roller slide plate 12, and the switch roller slide plate 12 is installed on the switch tie. When the eccentric height-adjustable turnout roller device 13 is a turnout double-roller device, synchronous step-by-step height adjustment is realized by the double rollers. The eccentric height-adjustable turnout roller device 13 is installed in the area of a turnout switch rail 11, the turnout switch sleepers of a certain number are installed in pairs along the length direction of the line, a turnout double-roller device is arranged at the tip of the switch rail 11, and then a turnout single-roller device can be arranged.
The eccentric height-adjustable turnout roller device 13 realizes the conversion of railway track lines through the movement of the switch point rail 11, when the point rail 11 is in a close contact state, namely a working state, the eccentric height-adjustable turnout roller device 13 is not contacted with the point rail 11, a gap of 1-2 mm is formed between the edge and the corner of the bottom edge of the point rail 11, and the point rail 11 is supported by a sliding bed platform; when the closely-attached point rail 11 is subjected to repulsion-separation conversion, the roller 203 of the eccentric height-adjustable turnout roller device 13 lifts the rail bottom of the point rail 11 and supports the bottom of the point rail 11, and at the moment, the point rail 11 has no vertical load, so that the sliding friction between the rail bottom of the original point rail 11 and the slide bed table is converted into the rolling friction between the rail bottom of the point rail 11 and the roller 203, and the transfer friction coefficient of the point rail 11 is greatly reduced, thereby achieving the purpose of reducing the conversion resistance; when the switch rail 11 is switched to the right position and is in the close state again, the rail bottom of the switch rail 11 is separated from the roller and falls onto the table board of the sliding bed, and the whole railway track line is installed and replaced at the moment.
In conclusion, the eccentric height-adjustable turnout roller device is simple in structure, each single roller body can be continuously and stepwisely adjusted, meanwhile, the eccentric height-adjustable turnout roller device has a roller anti-fouling function, the mandrel shaft end structure with the octagonal structure is adopted, no shaking displacement exists in the use process of the roller, the roller and the stop shoulder have an anti-blocking function by combining the roller with adjustable height, the structural support is stable, and the operation is safe and reliable.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (9)
1. Eccentric formula turnout running roller device that can heighten includes running roller body frame (1) and installs running roller body (2) in running roller body frame (1), its characterized in that: the roller body (2) consists of a mandrel (201), a mandrel (201) outer bearing (202) and a bearing (202) outer roller (203); the mandrel (201) is of an eccentric mandrel structure; the roller (203) realizes the height change adjustment of the roller body (2) through the eccentric mandrel (201).
2. The eccentric adjustable height turnout roller assembly according to claim 1, wherein: the roller body frame (1) is provided with a ballast blocking plate (3); the ballast blocking plate (3) and the roller body frame (1) are vertically welded and fixedly connected with each other to form a whole or are integrally formed.
3. The eccentric adjustable height turnout roller assembly according to claim 1, wherein: the shaft end of the mandrel (201) is of an octagonal structure (4); the mandrel (201) limits the displacement of the roller body (2) in the roller body frame (1) through the octagonal structure (4).
4. An eccentric adjustable height switch roller assembly as claimed in claim 1 or 3 wherein: the mandrel (201) is provided with a boss (6); the boss (6) is arranged at the outer side of the shaft end of the roller (203); the lug boss (6) is matched with a retaining shoulder (7); the roller body frame (1) is separated by the retaining shoulder (7) while the roller (203) is separated by the retaining shoulder (7); and a sealing ring (8) is arranged between the inner side of the retaining shoulder (7) and the outer side of the roller (203).
5. The eccentric adjustable height turnout roller assembly of claim 4, wherein: a first-order lug boss ring structure (701) is arranged outside the longitudinal section of the retaining shoulder (7); the first-order boss ring structure (701) is located on the inner side of the shaft end of the retaining shoulder (7), and the boss concave part of the first-order boss ring structure (701) is matched with and mounted on the sealing ring (8).
6. The eccentric height-adjustable turnout roller assembly according to claim 5, wherein: the sealing ring (8) is a V-shaped sealing ring which is provided with two forked lips; one of the bifurcated lips is wedge-shaped (801) and the other bifurcated lip is right-angled trapezoid (802); the forked lips of the right-angle trapezoid structure (802) are fitted with a first-order boss ring structure (701) of the matching retaining shoulder (7); the outermost sides of the forked lips of the wedge-shaped structure (801) are arranged towards the axial end face of the roller (203).
7. An eccentric adjustable height turnout roller assembly as claimed in claim 1, 2 or 3 wherein: the roller body frame (1) comprises an upper roller body frame (101) and a lower roller body frame (102); the upper roller body frame (101) and the lower roller body frame (102) are provided with octagonal holes (103) in a splicing manner; the upper roller body frame (101) and the lower roller body frame (102) tightly press and fix the mandrel (201) in the octagonal hole (103) to realize the fixed installation of the roller body (2).
8. The eccentric adjustable height turnout roller assembly of claim 7, wherein: the roller body frame (1) is fixed by combining a fixing bolt (9) with a Luodi firm anti-loosening washer.
9. The eccentric adjustable height turnout roller assembly according to claim 1, wherein: the bearing (202) is a composite self-lubricating bearing; the composite self-lubricating bearing is provided with an axial gap (2021); the composite self-lubricating bearing is a CSB-50 lead-free self-lubricating bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111073983.8A CN113774728A (en) | 2021-09-14 | 2021-09-14 | Eccentric height-adjustable turnout roller device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111073983.8A CN113774728A (en) | 2021-09-14 | 2021-09-14 | Eccentric height-adjustable turnout roller device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113774728A true CN113774728A (en) | 2021-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111073983.8A Pending CN113774728A (en) | 2021-09-14 | 2021-09-14 | Eccentric height-adjustable turnout roller device |
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| CN (1) | CN113774728A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222212A (en) * | 1996-06-11 | 1999-07-07 | 施维哈克火车站上层建筑股份有限公司 | Switch tongues |
| KR20050009315A (en) * | 2003-07-16 | 2005-01-25 | 삼표케이알이 주식회사 | roller base plate for railroad turnout |
| TW200801286A (en) * | 2006-04-06 | 2008-01-01 | Vossloh Cogifer | Bearing for guiding and supporting a switch rail |
| CN201447646U (en) * | 2009-07-03 | 2010-05-05 | 中铁宝桥集团有限公司 | Slide plate with rolling wheel for subway railroad switch |
| CN203009584U (en) * | 2012-10-18 | 2013-06-19 | 嘉善峰成三复轴承有限公司 | Novel self-lubricating bearing for butterfly valve |
| CN205043417U (en) * | 2015-10-10 | 2016-02-24 | 河北德威钢管有限公司 | Welding pad roller for spiral submerged -arc welding former |
| CN111456996A (en) * | 2020-05-15 | 2020-07-28 | 王彦淞 | Anti-loosening nut with functions of vibrating and tightening |
| CN215758269U (en) * | 2021-09-14 | 2022-02-08 | 中铁宝桥集团有限公司 | Eccentric height-adjustable turnout roller device |
-
2021
- 2021-09-14 CN CN202111073983.8A patent/CN113774728A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222212A (en) * | 1996-06-11 | 1999-07-07 | 施维哈克火车站上层建筑股份有限公司 | Switch tongues |
| KR20050009315A (en) * | 2003-07-16 | 2005-01-25 | 삼표케이알이 주식회사 | roller base plate for railroad turnout |
| TW200801286A (en) * | 2006-04-06 | 2008-01-01 | Vossloh Cogifer | Bearing for guiding and supporting a switch rail |
| CN201447646U (en) * | 2009-07-03 | 2010-05-05 | 中铁宝桥集团有限公司 | Slide plate with rolling wheel for subway railroad switch |
| CN203009584U (en) * | 2012-10-18 | 2013-06-19 | 嘉善峰成三复轴承有限公司 | Novel self-lubricating bearing for butterfly valve |
| CN205043417U (en) * | 2015-10-10 | 2016-02-24 | 河北德威钢管有限公司 | Welding pad roller for spiral submerged -arc welding former |
| CN111456996A (en) * | 2020-05-15 | 2020-07-28 | 王彦淞 | Anti-loosening nut with functions of vibrating and tightening |
| CN215758269U (en) * | 2021-09-14 | 2022-02-08 | 中铁宝桥集团有限公司 | Eccentric height-adjustable turnout roller device |
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