CN113581025B - Swing arm type contact net system for railway vehicle test bed - Google Patents
Swing arm type contact net system for railway vehicle test bed Download PDFInfo
- Publication number
- CN113581025B CN113581025B CN202110882195.7A CN202110882195A CN113581025B CN 113581025 B CN113581025 B CN 113581025B CN 202110882195 A CN202110882195 A CN 202110882195A CN 113581025 B CN113581025 B CN 113581025B
- Authority
- CN
- China
- Prior art keywords
- swing arm
- contact net
- transmission shaft
- fixed
- swing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
- B60M1/234—Arrangements for supporting or suspending trolley wires, e.g. from buildings incorporating yielding means or damping means
-
- 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
- B60L5/20—Details of contact bow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
Abstract
The utility model provides a swing arm formula contact net system for rail vehicle test bench, includes drive case, support post, swing arm, transmission shaft, wherein, the drive case is fixed in on the support post, the one end perpendicular embedding of transmission shaft in the drive case, the other end perpendicular passes the swing arm, through motor drive in the drive case the transmission shaft takes place to deflect to further drive the swing arm swing. According to the swing arm type contact net system provided by the invention, an active type movable contact net is connected with a pantograph of a train on a railway vehicle test bed, and the connection point of the contact net and the pantograph is continuously switched in a sliding manner in a reciprocating manner, so that the potential safety hazard caused by the fact that the current is not limited due to the influence of train power and the local heating up too high to the pantograph and the contact net due to the fact that the contact point is unchanged for a long time is further solved.
Description
Technical Field
The invention belongs to the field of railway vehicle tests and tests, and particularly relates to a swing arm type contact net system for a railway vehicle test bed.
Background
With the development of high-power rolling test bed technology, it is possible for an electric locomotive to perform full-load traction tests in a laboratory. In order to enable the tested vehicles to approach the actual operating conditions as much as possible, the contact net is required to supply power to the electric locomotive. In view of the relative tension of indoor space and safety factors, a movable contact net which can be unfolded during operation and folded during shutdown is generally selected. For example, as shown in fig. 1 (patent application No. cn202030120741. X). The power supply body and the conducting bars of the pantograph for taking power are connected to the swing arm through a plurality of insulators, and the power supply cable is connected with the conducting bars on the swing arm through the conducting connector, so that the swing arm can rotate freely in the horizontal direction. When the mobile contact net works, the swing arm swings out to the position (parallel to the paper surface) as shown in the figure 1, and then the mobile contact net is electrified to run; after the mobile contact net finishes running, power supply is stopped firstly, and then the swing arm rotates to a folding position vertical to the paper surface. However, the contact net cannot move during operation, so that the position of a contact point of the pantograph is always unchanged, and a cable at the contact point is easy to overheat and melt.
Disclosure of Invention
In order to solve the problems, the invention provides a swing arm type contact net system for a railway vehicle test bed, which comprises a driving box, a supporting upright post, a swing arm and a transmission shaft, wherein the driving box is fixed on the supporting upright post, one end of the transmission shaft is vertically embedded into the driving box, the other end of the transmission shaft vertically penetrates through the swing arm, and the transmission shaft is driven to deflect by a motor in the driving box and further drives the swing arm to swing.
In some embodiments of the invention, the swing arm type catenary system further comprises a conductive bar, wherein two ends of the rod-shaped first part at the upper part of the conductive bar are fixed at one side of the swing arm in a manner of parallel to the swing arm through insulators.
In some embodiments of the invention, the conductor bar further comprises a rod-shaped second member perpendicular to the first member and fixed below the end of the tip of the first member.
In some embodiments of the invention, the conductor bar further comprises a rod-shaped third member, one end of which is fixed to the bottom end of the second member and the other end of which is connected to the underside of the first member.
In some embodiments of the invention, a conductive strip is further connected to the lower part of the second part of the conductive strip, and the other end of the conductive strip is connected to the contact network.
In some embodiments of the invention, a movable wire clip is also connected to the lower end of the second part of the conductor bar, said movable wire clip fastening the contact net.
In some embodiments of the invention, the swing arm catenary system further comprises a fixed block that is fixed to the support column and is connected to an end of the drive shaft that passes through the swing arm.
In some embodiments of the invention, the swing arm catenary system further includes a distance sensor fixed to the fixed block to monitor a movement trace of the swing arm.
In some embodiments of the invention, the swing arm catenary system further includes a stop secured between the distance sensor and the swing arm that prevents the swing arm from excessive swing.
In some embodiments of the invention, the swing arm type catenary system further comprises a limit lock positioned on an outer side wall of the fixed block for limiting the swing of the swing arm in an idle state.
According to the swing arm type contact net system provided by the invention, an active type movable contact net is connected with a pantograph of a train on a railway vehicle test bed, and the connection points of the contact net and the pantograph are continuously switched in a reciprocating swing mode, so that the problem that a contact net wire is burnt out due to overheat generated when a contact net fixed point is connected can be prevented, meanwhile, the contact net swings, the connection area of the pantograph can be changed in a small range, and other problems caused by local overcurrent or overheat of the pantograph can be prevented.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention and that other embodiments may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram of a typical design structure of the prior art;
fig. 2 is a schematic diagram of a swing arm catenary system according to the present invention;
fig. 3 is a front view of a swing arm type catenary according to an embodiment of the present invention in a horizontal direction;
fig. 4 is a side view of a swing arm catenary according to an embodiment of the present invention in a horizontal direction;
fig. 5 is a top view of a swing arm type catenary according to an embodiment of the present invention in a vertical direction.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Fig. 2 is a schematic diagram of the present invention, in fig. 2, a structure in a shape like a knife is a simplified model of a swing arm type catenary designed in the present invention, and a schematic diagram of a use state and an idle state thereof is shown in the figure. Specifically, in the idle state, the swing arm type contact net is at a point C in the figure, and the swing arm type contact net is folded to be close to the position of the fixed object. The AB point is a reciprocating movement section of the use state of the swing arm type contact net, namely, the swing arm type contact net reciprocates from A to B. I represents a sector area of swing arm movement of a swing arm type contact net, d represents a displacement distance of a wire (namely the contact net) of the swing arm type contact net, and the contact net can have displacement with the distance d in a direction perpendicular to a rail train through the reciprocating movement of the swing arm type contact net between AB (corresponding to a travelling line of the rail train), so that when a full-load traction test can be carried out indoors, the contact net can always relatively move with a pantograph of a test vehicle, a connection mode of the contact net and the pantograph in a real train operation environment is simulated, and the problem that the wire on the contact net is burnt due to high position caused by long-time contact of the wire on the contact net with the pantograph through a fixed point is avoided. The relative motion scene of the moving contact net is realized.
As shown in fig. 3-5, the invention provides a swing arm type contact net system for a railway vehicle test bed, which comprises a driving box 6, a supporting upright post 10, a swing arm 9, a transmission shaft 8 and a control device, wherein the driving box 6 is fixed on the supporting upright post 10, one end of the transmission shaft 8 is vertically embedded into the driving box 6, the other end vertically penetrates through the swing arm 9, and the transmission shaft 8 is driven to deflect through a motor in the driving box 6 and further drives the swing arm 9 to swing.
In this embodiment, in the real environment where the train outside the field runs, the pantograph of the overhead contact system is always in a relatively moving state, so that the generated high-strength current is uniformly distributed on the wires on the contact network at the contact points of the overhead contact system and the pantograph along the train line, so that the high-strength current does not continuously pass through a certain point, and therefore, high temperature is not generated at a certain section or a certain point of the overhead contact system due to the ultra-strong current. However, on an indoor rolling test platform, a train moves in situ, and a pantograph and a contact net do not generate displacement, so that the contact net is burnt out or the service life of the contact net is reduced due to current heating of a single contact point.
In some embodiments of the invention, the swing arm contact net system further comprises a conductive bar 2, wherein two ends of a rod-shaped first part 12 at the upper part of the conductive bar 2 are fixed on one side of the swing arm 9 in a manner of parallel to the swing arm 9 through an insulator 3.
In this embodiment, since a certain strength is required for the actual material for manufacturing the swing arm contact net, the swing arm contact net is generally manufactured from metal, and the cost is maximally reduced on the basis of satisfying the strength requirement. Therefore, in the swing arm type contact net of the metal structure, the wire for high voltage power supply needs to be insulated from the swing arm 9, and thus the conductor bar 2 and the swing arm 9 are connected through the insulator 3. In order to take the weight of the overhead contact system itself into consideration, a certain pressure is required to connect the pantograph. As shown in fig. 3-5, one section of the conductive bar 2 is designed into a triangular structure, a first part 12 is arranged at the top of the conductive bar, and two sections of the first part 12 are respectively connected with the swing arm 9 through insulators 3.
In some embodiments of the invention, the conductor bar 2 further comprises a rod-shaped second part 13, said second part 13 being perpendicular to said first part 12 and being fixed under the end of the tip of said first part 12.
In this embodiment, a second part 13 is also connected to the end of the first end of the conductor bar 2 remote from the support post 10, the second part 13 being fixed perpendicular to the first part 12 at the end of the first part 12.
In some embodiments of the invention, the conductor bar 2 further comprises a rod-shaped third part 14, one end of said third part 14 being fixed to the bottom end of the second part 13 and the other end being connected to the underside of said first part 12.
In this embodiment, in order to consider the influence of the pressure generated when the contact net contacts the pantograph on the deformation of the conductive strip, a third member 14 is further provided between the first member 12 and the second member 13, and one end of the third member 14 is connected to the lower end of the second member 13. The opposite end is connected to a position on the first part 12 and the point of connection to the first part 12 is at a distance from the point of connection of the first part 12 to the second part 13 equal to the total length of the second part 12, i.e. a part of the first part 12 forms a right isosceles triangle with the second part 13 and the third part 14.
In some embodiments of the invention, the lower part of the second part 13 of the conductor bar is also connected to a conductor strip 1, the other end of said conductor strip 1 being connected to a contact network.
In this embodiment, as shown in fig. 3-4, a protrusion with a certain length is extended outwards from the lower part of the second end of the conductive bar 2, which is vertically downward, near the terminal, and the protrusion is connected with a conductive belt 1, the conductive belt 1 has good conductivity, and the other end of the conductive belt is connected with a contact net 11 to supply power to the contact net 11.
In some embodiments of the invention, a movable wire clip is also connected to the lower end of the second part of the conductor bar, said movable wire clip fastening the contact net.
In this embodiment, the movable wire clip 4 is connected to the lower end of the second component 13, the movable wire clip 4 has a certain rigidity, is connected to the contact net 11 through a connection structure matched with the contact net 1 and is locked and fixed, the movable wire clip 4 enables the contact net 11 to rotate relative to the swing arm in a horizontal direction, and enables the contact net and the pantograph to be always in a vertical state from a top view, that is, the contact net is always parallel to a running direction of a train, and it is to be noted that, in the present invention, fig. 3-5 do not show the whole view of the contact net of the swing arm type contact net system for the railway vehicle test bed, only part of the contact net is shown in fig. 3-5, but in practice, the same cable is connected by a plurality of swing arm type contact net systems and is fixed through the movable wire clip 4, and the plurality of swing arm contact nets jointly drive the whole contact net to move to a side where the swing arm is located relative to an original position or restore to the original position, so that the flexible cable is required.
In some embodiments of the invention, the swing arm catenary system further comprises a fixed block 15, said fixed block 15 being fixed to said support column 10 and connected to the end of said transmission shaft 8 passing through the swing arm 9.
In this embodiment, the end of the transmission shaft for driving the swing arm 9 to rotate needs to be fixed, so as to prevent the swing arm 9 from driving the transmission shaft 8 to generate errors under the condition of hands and finally destroying the differential gear of the motor in the driving box, therefore, a fixed block 15 is arranged at the top of the supporting upright 10, the fixed block is in a right-angle shape, wherein the part close to the upright extends downwards and is fixed on the supporting upright 10, the top part horizontally extends in a direction away from the supporting upright 10, the end of the transmission shaft 8 is embedded in the end of the fixed block 15 away from the supporting upright 10, and a rolling bearing is embedded at the connection part of the fixed block 15 and the transmission shaft 8 so as to reduce kinetic energy loss and abrasion caused by friction between the transmission shaft 8 and the fixed block 15. And based on this, stabilizes the torque of the transmission shaft 8 in the horizontal direction brought by the swing arm 9. The fixed block 15 is formed in an opening on a side facing the train, and the swing arm 9 swings reciprocally in the opening.
In some embodiments of the present invention, the swing arm type catenary system further includes a distance sensor 7 fixed on the fixed block 15 to monitor the movement trace of the swing arm.
In the present embodiment, the distance sensor 7 is disposed inside the opening of the fixed block 15 to monitor the swing position of the swing arm 9, and after the swing arm 9 reaches the predetermined swing position, the sensor sends a reverse rotation instruction to the driving motor in the driving box, so that the swing arm 9 swings in the reverse direction, thereby circularly controlling the reciprocating swing arm movement of the swing arm 9.
In some embodiments, the distance sensors 7 are symmetrically arranged in the fixed blocks 15 on both sides of the swing arm 9, and each controls the swing arm movement of the swing arm 9 in its own direction by itself. Specifically, in a competitive manner, when the swing arm 9 on the left side detects that the distance between the swing arm 9 and the swing arm is closer or even exceeds a preset safety distance, the priority of a steering command issued to a motor in the driving box is higher than that of the command of the distance sensor 7 on the right side opposite to the motor, so that the swing arm is prevented from swinging beyond the preset range to generate safety risk due to the fact that a certain distance sensor fails. That is to say the command priority of steering is higher in the control system controlling the motor in the drive box. Whichever distance sensor issues a steering command controls the change in the direction of rotation of the motor. Further, when the steering instruction from the distance sensor 7 is frequently received within a certain time (time is less than half of the reciprocation period), the rotation of the motor is stopped and an error warning is issued. Since in this case there must be a malfunction of one of the distance sensors 7 or a malfunction of the communication line.
In some embodiments of the invention, the swing arm catenary system further includes a stop secured between the distance sensor and the swing arm that prevents the swing arm from excessive swing.
In the present embodiment, a stopper is further provided outside the distance sensor 7 for braking when the swing arm 9 exceeds a predetermined swing range when the swing range of the swing arm 9 controlled by the distance sensor 7 fails. In addition, the stop face is made of soft compression-resistant and wear-resistant materials on one face of the swing arm 9, impact caused by collision can be reduced when the rest stops of the swing arm 9 collide, and the fixation of the whole swing arm type contact net is protected.
In some embodiments of the invention, the swing arm type catenary system further comprises a limit lock positioned on an outer side wall of the fixed block for limiting the swing of the swing arm in an idle state.
In this embodiment, as shown in fig. 3-5, a limit lock 5 is further disposed on the outer side of the fixing block 15, the limit lock is in a right-angle Z-shaped design as shown in fig. 4, when the swing arm is in a working state, the limit lock is in a raised state, when the swing arm type contact net is in an idle state, the swing arm type contact net is folded to be close to a fixed wall, the limit lock is put down, and the position of the swing arm type contact net is fixed through the protruding portion of the right-angle Z-shaped, so that the space requirement of other work is prevented from being affected in the idle state.
According to the swing arm type contact net system provided by the invention, an active type movable contact net is connected with a pantograph of a train on a railway vehicle test bed, and the connection points of the contact net and the pantograph are continuously switched in a reciprocating swing mode, so that the problem that a contact net wire is burnt out due to overheat generated when the contact net is connected with a fixed connection point can be prevented, meanwhile, the connection area of the pantograph can be changed in a small range while the contact net swings, and other problems caused by local overcurrent or overheat of the pantograph can be prevented.
In the embodiment of the invention, the contact net and the pantograph generate relative motion in real time by driving the swing arm to swing reciprocally, so that the contact net is prevented from being burnt out due to high temperature generated by high current at the fixed connection point, and the real test environment of the actual vehicle pantograph and the contact net is well simulated. The vehicle is stationary, and the contact net moves.
Claims (6)
1. The swing arm type contact net system for the railway vehicle test bed comprises a driving box, a supporting upright post, a swing arm and a transmission shaft, wherein the driving box is fixed on the supporting upright post, one end of the transmission shaft is vertically embedded into the driving box, the other end of the transmission shaft vertically penetrates through the swing arm, and the motor in the driving box drives the transmission shaft to perform reciprocating deflection movement and further drives the swing arm to swing;
the fixing block is fixed on the supporting upright post and is connected with the end part of the transmission shaft penetrating through the swing arm;
the distance sensor is symmetrically arranged in the fixed blocks at two sides of the swing arm, and controls the swing arm to move towards the direction of the swing arm by the distance sensor;
the device also comprises a stop which is fixed between the distance sensor and the swing arm and used for preventing the swing arm from excessively swinging;
the contact net comprises a contact net body, and is characterized by further comprising a conductive bar, wherein the conductive bar further comprises a rod-shaped second component, the lower part of the second component of the conductive bar is further connected with a conductive belt, and the other end of the conductive belt is connected with the contact net.
2. The swing arm type catenary system according to claim 1, wherein both end portions of the rod-shaped first member of the upper portion of the conductive bar are fixed to one side of the swing arm in parallel with the swing arm by means of insulators.
3. The swing arm catenary system of claim 2, wherein the second member is perpendicular to the first member and is secured below an end of a tip of the first member.
4. A swing arm catenary system according to claim 3, wherein the conductor rail further comprises a rod-shaped third member having one end fixed to a bottom end of the second member and the other end connected to an underside of the first member.
5. The swing arm type catenary system according to claim 1, wherein a movable wire clip is further connected to a lower end portion of the second member of the conductor bar, the movable wire clip fastens the catenary, and a rotating structure of the movable wire clip can cause the catenary to be always parallel to a train traveling direction when the swing arm swings.
6. The swing arm catenary system of claim 1, further comprising a limit lock positioned on an outer sidewall of the fixed block for limiting swing of the swing arm in an idle state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110882195.7A CN113581025B (en) | 2021-08-02 | 2021-08-02 | Swing arm type contact net system for railway vehicle test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110882195.7A CN113581025B (en) | 2021-08-02 | 2021-08-02 | Swing arm type contact net system for railway vehicle test bed |
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| Publication Number | Publication Date |
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| CN113581025A CN113581025A (en) | 2021-11-02 |
| CN113581025B true CN113581025B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110882195.7A Active CN113581025B (en) | 2021-08-02 | 2021-08-02 | Swing arm type contact net system for railway vehicle test bed |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114013286B (en) * | 2021-11-26 | 2023-08-15 | 中车大连机车车辆有限公司 | Roof integrated high-voltage system of electric locomotive |
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| CN113581025A (en) | 2021-11-02 |
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