CN108705957B - Stepless rotation type line fork device of direction for contact net - Google Patents
Stepless rotation type line fork device of direction for contact net Download PDFInfo
- Publication number
- CN108705957B CN108705957B CN201810728141.3A CN201810728141A CN108705957B CN 108705957 B CN108705957 B CN 108705957B CN 201810728141 A CN201810728141 A CN 201810728141A CN 108705957 B CN108705957 B CN 108705957B
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- China
- Prior art keywords
- lug
- fixing base
- bearing
- wire
- outer end
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/14—Crossings; Points
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/12—Trolley lines; Accessories therefor
- B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention relates to a guiding stepless rotation type line fork device for a contact net, which comprises a limiting pipe, wherein both ends of the limiting pipe are connected with bearings on both sides through threaded rotating shafts, and the bearings are arranged in a bearing rotation combination device; the bearing rotation combination device is formed by butt joint of an inner bearing fixing seat and an outer lug fixing base, and the outer end of the lug fixing base is connected to a positioning wire clamp or a parallel groove wire clamp. The invention can automatically rotate and adjust according to the stress and the wire expansion and play direction of the wire, can well limit the transition wire within the movable range, has the function of enabling the pantograph of the electric locomotive to take the flow and slide the transition, solves the problems of overlarge deflection and abrasion of the wire fork, prolongs the service life, and can completely replace the common wire fork device.
Description
Technical Field
The invention relates to the technical field of electrified railway contact networks, in particular to a guide stepless rotation type line fork device for a contact network.
Background
The turnout, an indispensable link in railway construction, is a line connection device for transferring rolling stock from one track to another track, and is usually laid in a large number at stations and marshalling stations. In the design of electrified railway, the crossing line fork arrangement of the contact net at the points of No. 9, no. 12 and No. 18 is required to be provided with a transition line fork device so as to realize the continuous power supply capability of switching among different tracks. The method is particularly important for realizing smooth transition of a high-speed railway, a common contact net used at present is in a tubular shape and a T-shaped shape, the contact net is fixedly connected with a contact line through a simple wire clamp, a transition side line contact wire is in a fixed shape, a limit value tube (T-shaped rod) and a positive line contact wire are obliquely crossed along with temperature change, a movement mode is non-directional 'face surface' dry friction, severe friction is generated by relative movement between the limit value tube and the wire during operation, the section abrasion of the contact wire is serious, and the limit value tube is worn and broken. Even limiting the tube to drop and hit the pantograph, causing serious safety accidents.
Disclosure of Invention
The invention aims to provide a guide stepless rotating type line fork device for a contact net, which solves the problems of overlarge deflection and abrasion of the line fork, prolongs the service life and can completely replace the common line fork device.
The technical scheme adopted by the invention is as follows:
the utility model provides a stepless rotation type line fork device of direction for contact net which characterized in that:
the device comprises a limiting tube, wherein both ends of the limiting tube are connected with bearings on both sides through threaded rotating shafts, and the bearings are arranged in a bearing rotation combination device;
The bearing rotation combination device is formed by butt joint of an inner bearing fixing seat and an outer lug fixing base, and the outer end of the lug fixing base is connected to a positioning wire clamp or a parallel groove wire clamp.
The limiting tube is a hollow tube, and two ends of the limiting tube are provided with internal threads and are connected with a threaded rotating shaft.
One end of the threaded rotating shaft is connected with the limiting tube, the other end is provided with a step shaft the end face is in interference fit with the bearing.
The bearing is selected from an oil injection-free deep groove ball bearing, a cylindrical roller bearing or a sliding bearing.
The outer end of the lug fixing base is provided with a lug with a pin shaft hole, and the lug is fixed to the positioning wire clamp through a positioning pin shaft.
The outer end of the flat lug fixing base is provided with a flat lug with two screw holes, the flat lug is fixed on the T-shaped line fork body through double bolts, and the T-shaped line fork body is fixed on the parallel groove clamp.
The outer end of the flat lug fixing base is provided with a flat lug, and the flat lug and the T-shaped line fork body are processed into a whole and fixed to the parallel groove clamp.
The outer end of the T-shaped fork body is provided with an earhole and is connected with the hanging string through a stainless steel bolt pin.
The invention has the following advantages:
1. The invention can automatically rotate and adjust the crossing wire fork, the lateral wire and the positive wire or the lateral wire according to the stress and the wire expansion and play direction of the wire, can well limit the transition wire in the movable range, and has the function of enabling the pantograph of the electric locomotive to take the flow and slide.
2. The invention has dynamic guiding type following property, and the two ends of the limiting pipe are contacted by adopting rolling bearing points, thereby effectively avoiding friction damage of the lead and the limiting pipe. The deflection of the simply supported beam structure body can be controlled within 1 percent L (L is the effective length of a limiting pipe). The wire clamps at the two ends can also realize a bolt-free maintenance-free structure.
3. The two ends of the invention can be in interference fit with various types of bearings, such as oil injection-free deep groove ball bearings, cylindrical roller bearings or sliding bearings.
Drawings
FIG. 1 is a block diagram of embodiment 1 of the present invention.
Fig. 2 is a structural diagram of embodiment 2 of the present invention.
Fig. 3 is a structural diagram of embodiment 3 of the present invention.
In the figure, 1-restricting the tube; 2-a threaded rotating shaft; 3-bearing rotation combination device; 4-a bearing fixing seat; 5-a flat ear fixing base; 6, positioning a pin shaft; 7-positioning wire clamps; 8-T-shaped line fork body; 9-hanging string; 10-parallel groove clamps.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
In railway construction, in order to meet the requirement of inter-track switching driving, track professions set off-line switching turnouts in near-station throat areas, tie lines, parking yards and the like, and the turnouts which are arranged in a crossing way of an on-line contact net mainly comprise No. 9, no. 12 and No. 18 turnouts, the crossing line turnouts of the contact net are arranged and have to be provided with transition line turnouts so as to realize continuous power supply capacity of switching among different tracks, and the device mainly controls positive lines and lateral lines, is in the working range of a pantograph when the lateral lines and the lateral lines are in transition, and ensures a normal and good current-taking state.
The common line fork structure has two main types, one is tubular, the other is T-shaped, and both ends are fixed. The contact line passes through the bottom end of the wire fork, and is influenced by the change of ambient temperature, and the transition wire generates dry friction abrasive particles to adhere and wear between the expansion and contraction sliding between the limiting tube and the working branch contact line.
The invention relates to a guiding stepless rotating type line fork device for a contact net, which is structurally a simply supported beam structure and mainly comprises four parts. The two ends of the device are provided with the rolling bearings or sliding bearings (maintenance-free) which are in interference fit symmetry, namely the bearing rotation combination device, the limiting tube is connected with the threaded shaft to form a main body structure, the transitional lead wire slides between the positive line (lateral line) and the limiting tube, radial force is generated to enable the bearing rotation combination device and the limiting tube body to rotate steplessly, and point contact rotation is realized to avoid friction.
The invention has the functions of limiting the lead to be separated from the working range at the crossing part of the contact net, having the function of smoothly taking the contact net from the crossing part of the upper contact net at the crossing part of the track, and realizing stepless rotation, so that the locomotive has good flow taking, free rotation, less friction and no maintenance.
The device specifically comprises a limiting tube 1, two ends of the limiting tube 1 are connected with bearings on two sides through threaded rotating shafts 2, the bearings are installed in a bearing rotating combination device 3, the bearing rotating combination device 3 is formed by butt joint of an inner bearing fixing seat 4 and an outer flat lug fixing base 5, and the outer end of the flat lug fixing base 5 is connected to a positioning wire clamp 7 or a parallel groove wire clamp 10.
The limiting pipe 1 is a hollow pipe, two ends of the limiting pipe are connected with a threaded rotating shaft 2 after being tapped with internal threads, so that an integral limiting pipe fitting with a connectable end part is formed, and the integral limiting pipe fitting is a main body of the invention and is connected with a bearing rotating combination device to realize stepless rotation. One end of the threaded rotating shaft 2 is connected with the limiting tube 1, the other end is provided with a stepped shaft end face and is in interference fit with a bearing, and the bearing can be an oil injection-free deep groove ball bearing, a cylindrical roller bearing or a sliding bearing capable of rotating steplessly.
The main material of the bearing rotation combination device 3 is copper alloy or aluminum alloy, and the technology is metal die forging or metal precision casting.
Referring to embodiment 1 of fig. 1, a lug fixing base 5 is provided at an outer end thereof with a lug having a pin hole, and is fixed to a positioning wire clip 7 by a positioning pin 6.
Referring to embodiment 2 of fig. 2, the outer end of the lug fixing base 5 is provided with a lug having two screw holes, and is fixed to the T-shaped fork body 8 by means of a double bolt, and the T-shaped fork body 8 is fixed to the parallel groove clamp 10.
Referring to embodiment 3 of fig. 3, the lug fixing base 5 is provided at the outer end thereof with a lug integrally formed with the T-shaped fork body 8, and is fixed to the parallel groove clamp 10.
The outer end of the T-shaped fork body 8 is provided with an earhole and is connected with a hanging string 9 through a stainless steel bolt pin.
The T-shaped fork body 8 and the parallel groove clamp 10 are made of copper alloy materials and are subjected to a metal die forging process. The positioning wire clamp 7 is made of copper alloy material, and is formed by metal die forging or precision casting technology.
The invention relates to indispensable equipment in the construction of an electrified railway contact net, which has a simple supporting beam structure, radically changes a line fork structure and a movement mode thereof, is designed into an integral device, removes constraint, sets degree of freedom, adopts a kinetic energy conversion mode to relieve abrasion, and can ensure that a line fork body can freely rotate when a wire is warm-expanded.
The two end parts of the invention are in interference fit with the symmetrical rolling bearing (maintenance-free), the limiting tube and the threaded shaft are connected to form a main body structure, the integrity is strong, the radial and axial forces can be born, the transitional wire slides between the positive line (side line) and the limiting tube, the radial force is generated, the bearing can rotate steplessly, the point contact rotation is realized, and the 'surface-surface' friction is avoided. The friction coefficient is improved from the original common 0.22 to 0.0010-0.0015, the service life is prolonged by several times, the occurrence of abrasion accidents is effectively avoided, and the maintenance-free and less maintenance is truly realized.
The whole performance of the invention meets the current standard specification requirements, the maximum vertical working load at the center of the limiting guide rod of the wire fork is not less than 0.18kN, and the allowable deflection is not more than 1.5 percent L. The groove angle of the positioning (parallel groove) clamp body accords with the regulations of TB/T2809 and is respectively 51 DEG + -1 DEG and 27 DEG + -1 deg.
The content of the invention is not limited to the examples listed, and any equivalent transformation to the technical solution of the invention that a person skilled in the art can take on by reading the description of the invention is covered by the claims of the invention.
Claims (4)
1. The utility model provides a stepless rotation type line fork device of direction for contact net which characterized in that:
the device comprises a limiting tube (1), wherein both ends of the limiting tube (1) are connected with bearings on both sides through threaded rotating shafts (2), and the bearings are arranged in a bearing rotating combination device (3);
the limiting tube (1) is a hollow tube, and two ends of the limiting tube are provided with internal threads and are connected with the threaded rotating shaft (2);
the bearing rotation combination device (3) is formed by butt joint of an inner bearing fixing seat (4) and an outer lug fixing base (5), and the outer end of the lug fixing base (5) is connected to a positioning wire clamp (7) or a parallel groove wire clamp (10);
The outer end of the lug fixing base (5) is connected to a positioning wire clamp (7), and the lug fixing base is specifically provided with:
The outer end of the flat lug fixing base (5) is provided with a flat lug with a pin shaft hole, and the flat lug is fixed to a positioning wire clamp (7) through a positioning pin shaft (6);
the outer end of the lug fixing base (5) is connected to a parallel groove clamp (10), and the lug fixing base is specifically:
The outer end of the flat lug fixing base (5) is provided with a flat lug with two screw holes, the flat lug is fixed on a T-shaped fork body (8) through double bolts, and the T-shaped fork body (8) is fixed on a parallel groove clamp (10);
or the outer end of the flat lug fixing base (5) is provided with a flat lug, and the flat lug and the T-shaped line fork body (8) are processed into a whole and fixed to the parallel groove clamp (10).
2. The guide stepless rotating type line branching device for overhead line system according to claim 1, wherein:
One end of the threaded rotating shaft (2) is connected with the limiting tube (1), the other end is provided with a step shaft the end face is in interference fit with the bearing.
3. The guide stepless rotating type line branching device for overhead line system according to claim 2, wherein:
the bearing is selected from an oil injection-free deep groove ball bearing, a cylindrical roller bearing or a sliding bearing.
4. The guide stepless rotating type line branching device for overhead line system according to claim 1, wherein:
the outer end of the T-shaped fork body (8) is provided with a lug hole and is connected with a hanging string (9) through a stainless steel bolt pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728141.3A CN108705957B (en) | 2018-07-05 | 2018-07-05 | Stepless rotation type line fork device of direction for contact net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810728141.3A CN108705957B (en) | 2018-07-05 | 2018-07-05 | Stepless rotation type line fork device of direction for contact net |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108705957A CN108705957A (en) | 2018-10-26 |
| CN108705957B true CN108705957B (en) | 2024-08-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810728141.3A Active CN108705957B (en) | 2018-07-05 | 2018-07-05 | Stepless rotation type line fork device of direction for contact net |
Country Status (1)
| Country | Link |
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| CN (1) | CN108705957B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115092015A (en) * | 2022-07-20 | 2022-09-23 | 陕西万里达铁路电气化器材有限公司 | A roller-sleeve switch for contact wire |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206765844U (en) * | 2017-05-02 | 2017-12-19 | 中铁电气化局集团宝鸡器材有限公司 | Double contact line line troubles |
| CN208813019U (en) * | 2018-07-05 | 2019-05-03 | 中铁第一勘察设计院集团有限公司 | A kind of stepless rotation molded line trouble device of contact net guiding |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH637067A5 (en) * | 1978-11-17 | 1983-07-15 | Kummler & Matter Ag | Points element or obtuse crossing part for a contact line of a trolley bus |
| GB2143190B (en) * | 1983-07-05 | 1987-01-21 | Wong Kam Fu | Overhead conductor for electric vehicles |
| CN2151913Y (en) * | 1992-12-29 | 1994-01-05 | 铁道部成都铁路局 | Geometry parameter measuring device for electric railway contact net |
| CN201457115U (en) * | 2009-05-22 | 2010-05-12 | 宝鸡保德利电气设备有限责任公司 | Section wire fork |
| DE102011087713A1 (en) * | 2011-12-05 | 2013-06-06 | Schaeffler Technologies AG & Co. KG | Linear bearing e.g. fixed bearing, has carrier body comprising retainer for machine part, where retainer is arranged at carrier body transverse to guide track arranged in slide bearing hole or slide bearing bolt |
| CN203601038U (en) * | 2013-11-21 | 2014-05-21 | 洛阳鑫迪铁道电气化有限公司 | Wind prevention balance weight guiding device outside tunnel |
-
2018
- 2018-07-05 CN CN201810728141.3A patent/CN108705957B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206765844U (en) * | 2017-05-02 | 2017-12-19 | 中铁电气化局集团宝鸡器材有限公司 | Double contact line line troubles |
| CN208813019U (en) * | 2018-07-05 | 2019-05-03 | 中铁第一勘察设计院集团有限公司 | A kind of stepless rotation molded line trouble device of contact net guiding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108705957A (en) | 2018-10-26 |
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