CN111823871B - Upper part current-collecting device - Google Patents
Upper part current-collecting device Download PDFInfo
- Publication number
- CN111823871B CN111823871B CN202010749144.2A CN202010749144A CN111823871B CN 111823871 B CN111823871 B CN 111823871B CN 202010749144 A CN202010749144 A CN 202010749144A CN 111823871 B CN111823871 B CN 111823871B
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- Prior art keywords
- rod
- bow
- current
- receiving device
- cylinder
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/22—Supporting means for the contact bow
- B60L5/28—Devices for lifting and resetting the collector
- B60L5/30—Devices for lifting and resetting the collector using springs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/22—Supporting means for the contact bow
- B60L5/28—Devices for lifting and resetting the collector
- B60L5/32—Devices for lifting and resetting the collector using fluid pressure
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention discloses a current receiving device with upper current receiving part. The current receiving device comprises a bottom plate, a bottom frame, a rotating insulator, a supporting insulator and a four-bar linkage mechanism consisting of an upper arm rod, a lower arm rod, a pull rod and the bottom frame; two ends of the pull rod are respectively hinged with the bottom frame and the upper arm rod, and the connecting rod is connected with the rotary insulator; the extending end of the upper arm rod is provided with a bow head; the bottom frame is provided with an air cylinder, and an air cylinder piston rod of the air cylinder is hinged with the lower arm rod and the connecting rod at the same time; the piston rod of the air cylinder extends or contracts to drive the lower arm rod to rotate so as to expand or contract the grounding device connected with the lower arm rod, and simultaneously drive the connecting rod to rotate so as to drive the rotary insulator to rotate; an elastic element is connected between the underframe and the lower arm. The current receiving device realizes the stable contact between the bow head and the contact rail and sends the opening or contraction position signals of the current receiving device to the vehicle.
Description
Technical Field
The invention relates to a current receiving device for receiving current at the upper part, and belongs to the field of electric locomotives.
Background
The current collection mode of the current collection device mainly depends on the position of the contact rail relative to the vehicle.
The current collection mode of the current collection device is mainly lateral collection and lower collection, and compared with the current collection devices of lateral collection and lower collection, the self weight of the current collection device of upper collection can accelerate the descending speed of the bow in the opening process, so that the current collection device of upper collection can be easily violently impacted with a contact rail, and the service life of each part of the current collection device of upper collection is seriously influenced. Meanwhile, in order to facilitate the vehicle to perform relevant logic judgment and carry out relevant subsequent instructions, the current receiving device needs to feed back the state of whether the current receiving device is in a working position to the vehicle, the installation space of the current receiving device is limited, and especially when a high-voltage contact network is used, enough electric clearance and creepage distance need to be kept simultaneously. These are all problems that need to be solved in the current-receiving device of upper current-receiving.
Chinese patent application CN110667391A discloses an upper current-receiving device, which focuses on studying the relative position of the upper current-receiving device with respect to the power supply, and does not relate to the specific structure of the upper current-receiving device.
Chinese utility model patent CN204452065U discloses a pneumatic single-arm double-current-receiving pantograph, which belongs to a lower current-receiving device. The pantograph of this patent rises bow process complete and only rely on the cylinder to provide, and the pantograph passes through the air feed that control gas circuit cut off the cylinder simultaneously, lets the pantograph rely on gravity to descend and get back to fold condition. In addition, the function of the spring is to prevent the pantograph head from turning over during the pantograph lifting process.
Disclosure of Invention
The invention aims to provide an upper current-receiving device, which can realize the smooth contact between a current-receiving device bow and a contact rail and send an opening or contraction position signal of the current-receiving device bow to a vehicle.
In order to achieve the purpose, the invention adopts the technical scheme that:
a current collecting device with upper current collection comprises a bottom plate, an underframe, a rotary insulator and a supporting insulator which are arranged between the bottom plate and the underframe, and a four-bar linkage mechanism consisting of an upper arm rod, a lower arm rod, a pull rod and the underframe; two ends of the pull rod are respectively hinged with the bottom frame and the upper arm rod, and the connecting rod is connected with the rotary insulator; the extending end of the upper arm rod is provided with a bow head; the structure is characterized in that:
the bottom frame is provided with an air cylinder, and an air cylinder piston rod of the air cylinder is hinged with the lower arm rod and the connecting rod at the same time; the piston rod of the air cylinder extends or contracts to drive the lower arm rod to rotate so as to expand or contract the grounding device connected with the lower arm rod, and simultaneously drive the connecting rod to rotate so as to drive the rotary insulator to rotate;
an elastic element is connected between the underframe and the lower arm rod, the elastic element keeps the bow head in contact with the contact rail and generates certain contact pressure when the current-collecting device is in a working position, and the elastic element enables the bow head to be in a folding position and generates certain holding force when the current-collecting device is in a non-working position.
Thus, the upper current receiving device according to the present invention is mounted on the vehicle through the insulator. After the cylinder is inflated and opened in place, the cylinder is cut off, the device is contacted with the contact rail by virtue of the pulling force of the elastic element, certain contact pressure is kept, and conduction current is collected; when the cylinder is charged again, the upper part of the current-receiving device returns to the initial folding position, and then the air is cut off, and the device is kept in the folding position by the pulling force of the elastic element. The device may send a position signal to the vehicle, such as the opening or closing position of the device itself. By selecting different insulators, the device can be suitable for vehicles such as subways, light rails and main locomotives.
According to the embodiment of the invention, the invention can be further optimized, and the following is the technical scheme formed after optimization:
in one preferred embodiment, the cylinder is cut off after being inflated to a proper position, and the bow head is contacted with the contact rail by virtue of an elastic element; the air cylinder is inflated again to cut off the air after the bow head returns to the initial folding position, and the bow head is kept at the folding position by virtue of the elastic element.
The pull rod is assembled by aluminum alloy rods; two ends of the pull rod are hinged with the underframe and the upper arm rod respectively by adopting universal bearings.
In order to prevent the pantograph head from overturning in the pantograph lifting process, a boss is arranged near the joint of the upper arm rod and the pantograph head.
In order to reduce damage to the bow caused by impact, it is preferable that the bow includes a bracket and a braided wire, and a buffer plate provided at a middle position of the bracket and hinged to the upper arm lever. The buffer plate is preferably a foam plate.
And an air path distributor is connected between the bottom plate and the bottom frame and is communicated with the air chamber of the air cylinder.
In one preferred embodiment, the bottom plate is provided with an auxiliary chain and a cam connected with the rotary insulator, and when a piston rod of the air cylinder extends or contracts to drive the rotary insulator to rotate, the cam enables the auxiliary chain to be pressed and transmits signals to the vehicle.
Preferably, the elastic element is a spring. Therefore, after the cylinder is inflated and opened in place, the gas is cut off, the device is contacted with the contact rail by virtue of the tension of the spring, certain contact pressure is kept, and conduction current is collected; when the cylinder is recharged, the device returns to the initial folded position and is subsequently de-energized, the device is held in the folded position by spring tension.
Compared with the prior art, the invention has the beneficial effects that: the current receiving device is simple in structure and easy to assemble, can be stably unfolded and folded, and simultaneously feeds back the position state of the current receiving device.
In addition, although CN204452065U all contains cylinder and spring, the theory of operation and the effect of cylinder and spring are completely different, specifically as follows:
1) the arch lifting process is different: the pantograph lifting process in CN204452065U is complete and is provided by means of air cylinders only. The pantograph lifting process of the invention depends on the combined action of the spring and the cylinder, when the opening angle is smaller, only the cylinder is relied on, when the opening angle reaches a certain value, the cylinder exhausts air and does not provide the driving force for the pantograph to open any more, and the driving force for the pantograph to continue to open is provided by the self weight of the pantograph and the tension of the spring.
2) The bow lowering process is different: the pantograph in CN204452065U is lowered back to the folded state by gravity by controlling the air passage to cut off the air supply of the air cylinder. The air cylinder of the invention is a bidirectional air cylinder, and the piston rod of the air cylinder is driven to move reversely by supplying air reversely (opposite to an air cavity in the pantograph lifting process), so that the pantograph head of the pantograph is lifted back to a folded state.
3) The spring functions differently: the pantograph in CN204452065U is to avoid the head turning during the pantograph lifting process. The invention avoids the overturn of the pantograph head during the pantograph lifting process by means of the structure (such as the lug boss 12). The spring of the invention has two functions: firstly, when the current-collecting device is in a working position, the bow head is kept in contact with the contact rail and generates certain pressure contact; and secondly, when the current-collecting device is in a non-working position, the bow head is in a folding position and generates a certain retaining force.
Drawings
FIG. 1 is a schematic perspective view of one embodiment of the present invention;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
fig. 5 is a schematic structural view of the upper arm 5 in fig. 1;
fig. 6 is a schematic view of the structure of the bow 4 in fig. 1;
FIG. 7 is an enlarged view of a portion of FIG. 1;
FIG. 8 is a top view of FIG. 7;
FIG. 9 is a schematic structural view (with partial section) of the base plate 11 of the present invention;
fig. 10 is a schematic view of the bow 4 of the present invention in an operative position;
fig. 11 is a schematic view of the bow 4 of the present invention in a collapsed position.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.
Referring to fig. 1-4, the upper current receiving device of the present embodiment includes an air channel distributor 1, a spring 2, an air cylinder 3, a bow 4, an upper arm 5, a lower arm 6, a pull rod 7, a bottom frame 8, a supporting insulator 9, a rotating insulator 10, and a bottom plate 11. The bottom plate 11 is installed on the vehicle bottom installation seat, the supporting insulator 9 is installed between the current collecting device underframe 8 and the bottom plate 11, so that the current collecting device is insulated and isolated from the vehicle bottom, and the supporting insulator 9 can be optimized according to the voltage grade of a contact network.
As shown in fig. 2-4, the upper arm lever 5, the lower arm lever 6, the pull rod 7 and the bottom frame 8 form a four-bar linkage, the pull rod 7 is assembled by aluminum alloy bars, and two ends of the pull rod are hinged to the bottom frame 8 and the upper arm lever 5 by universal bearings, so that the friction force of the current-receiving device is reduced. The upper arm rod 5 and the lower arm rod 6 adopt an additive manufacturing process, and deformation caused by welding parts is reduced. As shown in fig. 5, a boss 12 is arranged near the connection of the upper arm rod 5 and the bow, so that the bow can be prevented from turning over during the opening process of the current collector.
As shown in fig. 6, the bow head 4 is composed of a bracket 13, a braided wire 14 and a foam plate 15. The foam board can absorb the impact between the bow and the contact rail, and effectively reduces the damage of the impact to the bow.
As shown in fig. 7 and 8, one end of the cylinder 3 is hinged to the base frame 8, and a cylinder piston rod 16 is hinged to the lower arm lever 6 and is also hinged to a connecting rod 17. The connecting rod 17 is connected to the rotary insulator 10. Compressed gas enters the cylinder through the gas path distributor 1, pushes the cylinder piston rod 16 to advance or contract, drives the lower arm rod 6 to rotate so as to open or contract the grounding device, and simultaneously drives the connecting rod 17 to rotate so as to drive the rotary insulator 10 to rotate.
As shown in fig. 9, the bottom plate 11 includes a cam 18 and an auxiliary chain 19, the cam 18 is connected to the rotary insulator 10, the auxiliary chain is mounted on the bottom plate 11, and when the cylinder piston rod 16 is pushed to advance or contract to drive the rotary insulator 10 to rotate, the auxiliary chain 19 is pressed to transmit a signal to the vehicle.
As shown in fig. 10, when the current-receiving device is in the working position (fig. 10) and the folding position (fig. 11), the relative positions of the spring 2 and the lower arm lever 6 are different, so that after the air cylinder 3 of the current-receiving device is cut off, the current-receiving device is in the working position and keeps a certain contact pressure with the contact rail by virtue of the tensile force of the spring, and meanwhile, the current-receiving device is kept in the folding position.
The cylinder 3 is articulated with the lower arm rod 6, and the piston rod of the cylinder stretches out to drive the lower arm rod 6 to rotate to realize that the current receiving device of the embodiment opens after air is admitted to one side of the cylinder 3. After the current-collecting device is opened to a certain position, air is fed from the other side of the air cylinder 3 to slowly open the current-collecting device to a working position, and meanwhile, the bow head 4 comprises a foam plate for absorbing impact when the bow head 4 is in contact with a contact rail. Then the air cylinder 3 is cut off, and the current collecting device maintains the contact pressure of the bow head 4 and the contact rail by means of the spring. And after air is fed from the other side of the air cylinder 3, a piston rod of the air cylinder contracts to drive the lower arm rod 6 to rotate so that the current receiving device returns to the folding position. The bottom plate 11 is provided with a cam 18 connected with the rotary insulator 10, when the piston of the cylinder 3 extends and contracts, the rotary insulator 10 is driven to rotate, and meanwhile, the cam 18 on the bottom plate 11 is driven to rotate and compress an auxiliary switch arranged on the bottom plate 11 to transmit signals to a vehicle.
The foregoing examples are set forth to illustrate the present invention more clearly and are not to be construed as limiting the scope of the invention, which is defined in the appended claims to which the invention pertains, as modified in all equivalent forms, by those skilled in the art after reading the present invention.
Claims (7)
1. A current collecting device with upper current collection comprises a bottom plate (11), an underframe (8), a rotary insulator (10) and a supporting insulator (9) which are arranged between the bottom plate (11) and the underframe (8), and a four-bar mechanism consisting of an upper arm rod (5), a lower arm rod (6), a pull rod (7) and the underframe (8); two ends of the pull rod (7) are respectively hinged with the bottom frame (8) and the upper arm rod (5), and the rotary insulator (10) is connected with the connecting rod (17); the extending end of the upper arm rod (5) is provided with a bow head (4); the method is characterized in that:
the chassis (8) is provided with a cylinder (3), and a cylinder piston rod (16) of the cylinder (3) is hinged with the lower arm rod (6) and the connecting rod (17) at the same time; the piston rod (16) of the air cylinder extends or contracts to drive the lower arm rod (6) to rotate so as to open or contract the grounding device connected with the lower arm rod (6), and simultaneously drives the connecting rod (17) to rotate so as to drive the rotary insulator (10) to rotate;
an elastic element is connected between the bottom frame (8) and the lower arm lever (6), the elastic element keeps the bow (4) in pressure contact with the contact rail when the current collecting device is in a working position, and the elastic element enables the bow (4) to be in a folding position when the current collecting device is in a non-working position;
the auxiliary chain (19) and the cam (18) connected with the rotary insulator (10) are arranged on the bottom plate (11), and when the cylinder piston rod (16) extends out or contracts to drive the rotary insulator (10) to rotate, the cam (18) enables the auxiliary chain (19) to be pressed and transmits signals to a vehicle.
2. An upper current-collecting device according to claim 1, characterized in that the cylinder (3) is inflated to a certain position and then is cut off, and the bow head (4) is contacted with the contact rail by means of an elastic element; the air cylinder (3) is inflated again to enable the bow head (4) to return to the initial folding position and then is cut off, and the bow head (4) is kept at the folding position by means of the elastic element.
3. An upper flow receiving device according to claim 1, wherein said tie rods (7) are assembled from aluminium alloy rods; two ends of the pull rod (7) are respectively hinged with the underframe (8) and the upper arm rod (5) by adopting universal bearings.
4. An upper flow receiving device according to claim 1, characterised in that a boss (12) is provided near the connection of the upper arm lever (5) and the bow (4).
5. An upper current-collecting device according to claim 1, characterized in that the bow (4) comprises a bracket (13) and a weaving wire (14), and a buffer plate arranged in the middle of the bracket (13) and hinged to the upper arm (5).
6. An upper flow receiving device according to claim 1, wherein an air path distributor (1) is connected between the bottom plate (11) and the bottom frame (8), and the air path distributor (1) is communicated with the air chamber of the air cylinder.
7. An upper flow receiving device according to any one of claims 1-6, wherein said elastic element is a spring (2).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010749144.2A CN111823871B (en) | 2020-07-30 | 2020-07-30 | Upper part current-collecting device |
| PCT/CN2021/085177 WO2022021925A1 (en) | 2020-07-30 | 2021-04-02 | Current collecting apparatus for collecting current at upper portion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010749144.2A CN111823871B (en) | 2020-07-30 | 2020-07-30 | Upper part current-collecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111823871A CN111823871A (en) | 2020-10-27 |
| CN111823871B true CN111823871B (en) | 2022-01-18 |
Family
ID=72920403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010749144.2A Active CN111823871B (en) | 2020-07-30 | 2020-07-30 | Upper part current-collecting device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111823871B (en) |
| WO (1) | WO2022021925A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111823871B (en) * | 2020-07-30 | 2022-01-18 | 中车株洲电力机车有限公司 | Upper part current-collecting device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2536707A1 (en) * | 1982-11-30 | 1984-06-01 | Stemmann August Kg | FAST AUTOMATIC LOWERING DEVICE FOR PANTOGRAPHER |
| CN2568461Y (en) * | 2002-08-14 | 2003-08-27 | 大同机车厂 | Elastic head of pantograph |
| CN1486887A (en) * | 2003-08-12 | 2004-04-07 | 上海交通大学 | Double-wire powering trolleybus pantograph |
| CN2916646Y (en) * | 2006-06-20 | 2007-06-27 | 成都唐源科技有限责任公司 | System response test-based dynamic characteristic testing device for contact network |
| KR20090003839U (en) * | 2007-10-22 | 2009-04-27 | 현대로템 주식회사 | Electric power type single-arm pantograph |
| CN201956252U (en) * | 2011-03-24 | 2011-08-31 | 南车株洲电力机车有限公司 | High-voltage isolating switch in locomotive cabinet |
| KR20110106212A (en) * | 2010-03-22 | 2011-09-28 | 이정수 | Pantograph with lift height limiter |
| CN105291852A (en) * | 2015-12-07 | 2016-02-03 | 上海洲跃生物科技有限公司 | Tilting type straight-bar pantograph device |
| CN209972186U (en) * | 2019-03-14 | 2020-01-21 | 西安英斯利电子科技有限公司 | Pantograph device with lifting mechanism for high-speed train |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB864005A (en) * | 1958-01-09 | 1961-03-29 | Faiveley Sa | Improvements in or relating to pantographs |
| US8839921B2 (en) * | 2011-09-29 | 2014-09-23 | Schunk Bahn-Und Industrietechnik Gmbh | Pressure plate assembly and method for power transmission |
| CN203358371U (en) * | 2013-07-03 | 2013-12-25 | 首钢总公司 | Pneumatic pantograph type current collector |
| CN111251895B (en) * | 2020-01-21 | 2023-07-07 | 中车株洲电力机车有限公司 | Kuppe and bow head subassembly of single carbon slide pantograph |
| CN111823871B (en) * | 2020-07-30 | 2022-01-18 | 中车株洲电力机车有限公司 | Upper part current-collecting device |
-
2020
- 2020-07-30 CN CN202010749144.2A patent/CN111823871B/en active Active
-
2021
- 2021-04-02 WO PCT/CN2021/085177 patent/WO2022021925A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2536707A1 (en) * | 1982-11-30 | 1984-06-01 | Stemmann August Kg | FAST AUTOMATIC LOWERING DEVICE FOR PANTOGRAPHER |
| CN2568461Y (en) * | 2002-08-14 | 2003-08-27 | 大同机车厂 | Elastic head of pantograph |
| CN1486887A (en) * | 2003-08-12 | 2004-04-07 | 上海交通大学 | Double-wire powering trolleybus pantograph |
| CN2916646Y (en) * | 2006-06-20 | 2007-06-27 | 成都唐源科技有限责任公司 | System response test-based dynamic characteristic testing device for contact network |
| KR20090003839U (en) * | 2007-10-22 | 2009-04-27 | 현대로템 주식회사 | Electric power type single-arm pantograph |
| KR20110106212A (en) * | 2010-03-22 | 2011-09-28 | 이정수 | Pantograph with lift height limiter |
| CN201956252U (en) * | 2011-03-24 | 2011-08-31 | 南车株洲电力机车有限公司 | High-voltage isolating switch in locomotive cabinet |
| CN105291852A (en) * | 2015-12-07 | 2016-02-03 | 上海洲跃生物科技有限公司 | Tilting type straight-bar pantograph device |
| CN209972186U (en) * | 2019-03-14 | 2020-01-21 | 西安英斯利电子科技有限公司 | Pantograph device with lifting mechanism for high-speed train |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022021925A1 (en) | 2022-02-03 |
| CN111823871A (en) | 2020-10-27 |
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