Pantograph head and pantograph for electrified highway

Abstract

Disclosed in the present invention are a pantograph head and a pantograph for an electrified highway. The pantograph head comprises a positive contact strip and a negative contact strip, wherein first horns are mounted at the outer end of the positive contact strip and the outer end of the negative contact strip, respectively; second horns are mounted at the inner end of the positive contact strip and the inner end of the negative contact strip, respectively; each second horn comprises a fixed horn and a limiting insulating plate arranged in parallel with the fixed horn; the upper ends of the two fixed horns are respectively fixedly connected to the inner ends of the positive contact strip and the negative contact strip, and the lower ends of the two fixed horns are respectively hinged to the limiting insulating plates by means of hinge points A; and a return spring and a trigger mechanism which is used for detecting the position of a contact system wire and triggering pantograph lowering are mounted between each limiting insulating plate and a fixed horn. When contact system wires slide within a specified range of the pantograph head, a free end of each limiting insulating plate is higher than a fixed horn by a limited height, and when the contact system wires slide out of the specified range of the pantograph head, the free end of a limiting insulating plate moves downward under the pressure of a contact system wire, and a trigger mechanism sends out a pantograph lowering signal.

Description

Electric highway pantograph head and electric highway pantograph TECHNICAL FIELD

[0001] The present application relates to electric highway pantograph, in particular to an electric highway pantograph head and electric highway pantograph. BACKGROUND

[0002] Electric highway is to erect a contact net with positive and negative poles on the highway, and install a specially designed bipolar pantograph on a truck. When the truck bipolar pantograph is raised, it contacts with the contact net to obtain current and drive the truck to run. The electric highway eliminates the consumption of traditional trucks on fuel, saves a lot of energy, reduces the pollution of fuel emissions, and has great economic value and social environmental value.

[0003] Compared with the traditional rail vehicle, the electric highway vehicle has a significant feature that when the vehicle runs under the contact net, there is randomness of left and right deviation. When the deviation distance is too large, the contact net will slide beyond the specified range of the pantograph head, and the pantograph-catenary relationship is in an abnormal state, which is easy to cause the pantograph-catenary accident such as scratching the pantograph. SUMMARY

[0004] The technical problem to be solved by the present application is that the contact net of the electric highway vehicle will slide beyond the specified range of the pantograph head during the pantograph raising running process, which will cause the pantograph-catenary accident. The present application provides an electric highway pantograph head and electric highway pantograph with self-protection function, which can realize rapid pantograph lowering when the deviation value of the vehicle running track from the predetermined track exceeds the rated value.

[0005] To solve the above technical problems, the present application adopts the following technical scheme:

[0006] An electric highway pantograph head comprises a positive slide plate and a negative slide plate, the outer end of the positive slide plate and the outer end of the negative slide plate are respectively provided with a first horn, the inner end of the positive slide plate and the inner end of the negative slide plate are respectively provided with a second horn, the second horn comprises a fixed horn and a limiting insulating plate arranged in parallel with the fixed horn, the upper end of each of the two fixed horns is fixedly connected with the inner end of the positive slide plate and the negative slide plate, the lower end of each of the two fixed horns is hingedly connected with the limiting insulating plate through a hinge point A, and a reset spring and a trigger mechanism for detecting the position of the contact net line and triggering the pantograph lowering are arranged between the limiting insulating plate and the fixed horn; when the contact net line slides within the specified range of the pantograph head, the free end of the limiting insulating plate is higher than the fixed horn by a limited height.

[0007] The limiting insulating plate has two working states:

[0008] When the catenary wire slides within the specified range of the pantograph head, the free end of the limiting insulating plate is higher than the fixed bow angle by a limited height, and the trigger mechanism is in an open state;

[0009] When the catenary wire slides out of the specified range of the pantograph head, the free end of the limiting insulating plate is moved downward under the pressure of the catenary wire, the trigger mechanism is closed and a pantograph lowering signal is sent out; when the catenary wire slides to the normal position, the trigger mechanism returns to the open state.

[0010] Preferably, the trigger mechanism is a micro switch, the micro switch is pressed by the fixed bow angle when the catenary wire slides within the specified range of the pantograph head, and the micro switch is separated from the fixed bow angle and sends out a pantograph lowering signal when the catenary wire slides out of the specified range of the pantograph head. The triggering element of the micro switch is a pressing plate, which has a large triggering range in the horizontal direction, can avoid the defect that the triggering distance of the cylindrical sensor is short, and can be self-resetting.

[0011] Preferably, the micro switch is a mechanical micro switch, which can effectively ensure that it is not affected by electromagnetic interference under the condition of high-voltage arc between the bow and the net.

[0012] Preferably, the trigger mechanism is a sensor.

[0013] Based on the same inventive concept, the application also provides an electrified highway pantograph, characterized in that the electrified highway pantograph comprises the pantograph head.

[0014] When the vehicle deviates from the specified route and exceeds the rated value, that is, when the catenary wire slides to an abnormal position of the pantograph head, the trigger mechanism outputs a pantograph lowering signal, and the pantograph controller receives the pantograph lowering signal and performs a pantograph lowering action; when the catenary wire leaves the abnormal position, the limiting insulating plate returns to the initial state under the action of the hinge point, the tension of the reset spring and the limiting point.

[0015] The trigger mechanism of the application adopts a mature micro switch and effective insulation, which ensures that the application has a long service life and high reliability.

[0016] The sensitivity of the trigger mechanism can be adjusted by adjusting the pre-tightening force of the reset spring.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] 1) The trigger mechanism of the application can automatically send a pantograph lowering signal, and when the catenary wire leaves the abnormal position, the trigger mechanism returns to the initial state, and when the trigger mechanism is triggered again, the pantograph lowering signal is output again, without manual intervention and automatic operation.

[0019] 2) The second bow angle is installed at the inner end of the positive and negative slide plates respectively, so that the triggering position of the bow-dropping signal of the present application is a larger area, and the signal will be triggered when the overhead line moves to the triggering position, avoiding the triggering position being located at a point, which causes the short triggering process and cannot output effective signal.

[0020] 3) The sensitivity of the triggering mechanism can be adjusted by adjusting the pre-tightening force of the reset spring.

[0021] 4) The structure has long-term operation reliability.

[0022] 5) The present application can make the electric vehicle of the electrified highway automatically drop the bow when the vehicle deviates from the specified value during the bow-raising driving process, and the overhead line slides beyond the specified range on the bow head of the pantograph, avoiding the pantograph- catenary accident and ensuring the safety of the line. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Fig. 1 is a front view of the use state structure of the pantograph bow head of the electrified highway.

[0025] Fig. 2 is a three-dimensional view of the use state structure of the pantograph bow head of the electrified highway.

[0026] Fig. 3 is a front view of the structure of the pantograph bow head of the electrified highway.

[0027] Fig. 4 is a three-dimensional view of the pantograph bow head of the electrified highway when the overhead line slides to an abnormal position.

[0028] Fig. 5 is a state diagram of the second bow angle before the overhead line slides to an abnormal position on the pantograph bow head of the electrified highway.

[0029] Fig. 6 is a state diagram of the second bow angle after the overhead line slides to an abnormal position on the pantograph bow head of the electrified highway.

[0030] Fig. 7 is a three-dimensional view of the second bow angle.

[0031] In the drawings: 1, positive slide plate; 2, negative slide plate; 3, first bow angle; 4, second bow angle; 41, fixed bow angle; 42, limiting insulating plate; 43, reset spring; 44, triggering mechanism; 5, truck; 6, overhead line; A, hinged point. DETAILED DESCRIPTION

[0032] The application will be further described below in connection with specific preferred embodiments, but the scope of the application is not limited by the same.

[0033] In the description of the application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0035] Please refer to FIG. 1-7, an embodiment of the electric highway pantograph head of the application comprises a positive slide plate 1 and a negative slide plate 2, the outer end of the positive slide plate 1 and the outer end of the negative slide plate 2 are respectively provided with a first horn 3, and the inner end of the positive slide plate 1 and the inner end of the negative slide plate 2 are respectively provided with a second horn 4. The second horn 4 comprises a fixed horn 41 and a limiting insulating plate 42 arranged side by side with the fixed horn 41, the upper end of the fixed horn 41 is fixedly connected with the inner end of the positive slide plate 1 or the negative slide plate 2, the lower end is hinged to the limiting insulating plate 42 through a hinge point A, and the limiting insulating plate 42 and the fixed horn 41 are provided with a reset spring 43 and a trigger mechanism 44 for detecting the position of the overhead line 6 and triggering the pantograph lowering, the limiting insulating plate 42 has two working states:

[0036] When the overhead line 6 slides within the specified range of the pantograph head, the free end of the limiting insulating plate 42 is higher than the fixed horn 41 by a limited height, at this time the trigger mechanism 44 is in an open state;

[0037] When the overhead line 6 slides out of the specified range of the pantograph head, i.e. the overhead line 6 slides to an abnormal position, the free end of the limiting insulating plate 42 is moved downward under the pressure of the overhead line 6, and the trigger mechanism 44 is closed to send a pantograph lowering signal; when the overhead line slides to a normal position, the trigger mechanism 44 returns to an open state.

[0038] In this embodiment, the trigger mechanism 44 adopts a mechanical micro switch, which is pressed by the fixed horn angle 41 when the overhead line 6 slides within the specified range of the pantograph horn, at which time the trigger mechanism 44 is in the off state; when the overhead line 6 slides out of the specified range of the pantograph horn, i.e. the overhead line 6 slides to an abnormal position, the mechanical micro switch is separated from the fixed horn angle 41 and sends a pantograph lowering signal.

[0039] Obviously, the trigger mechanism 44 can also adopt a sensor, a travel switch, etc. The sensor preferably adopts a displacement sensor.

[0040] As shown in FIG. 1, the electrified highway pantograph with self-protection function of the present application comprises a pantograph horn.

[0041] In the specific implementation of the present application, the specific implementation method is as follows:

[0042] 1) As shown in FIGS. 1 and 2, the pantograph of the present application is installed on a truck 5, and positive and negative overhead lines 6 are erected above the vehicle, the position of the overhead lines 6 being fixed, when the vehicle below deviates in the left and right directions during driving, the overhead lines 6 slide left and right on the upper surfaces of the positive and negative slide plates 1 and 2.

[0043] 2) When the positive and negative overhead lines 6 slide left and right to the limit position, as shown in FIGS. 3 and 4, if the deviation of the vehicle driving track from the predetermined track further increases, the positive and negative overhead lines 6 will slide out of the pantograph horn profile, resulting in that the positive and negative overhead lines 6 at the contact with the pantograph are in an abnormal state, which easily causes the pantograph-catenary accident of scratching the pantograph. After the pantograph of the present application is installed, when the positive and negative overhead lines 6 slide left and right to the limit position and further slide, the positive and negative overhead lines 6 will slide and touch the second horn angle 4.

[0044] 3) When the positive and negative overhead lines 6 slide and touch the second horn angle 4: as shown in FIG. 5, the overhead lines 6 just touch the second horn angle 4; as shown in FIG. 6, the overhead lines 6 continue to slide, and the overhead lines 6 will press on the upper surface of the limiting insulating plate 42, the limiting insulating plate 42 being rotated downward around the hinge point A, in this process, the overhead lines 6 will be limited in the downward pressing distance by the fixed horn angle 41, that is, due to the action of the fixed horn angle 41, the limiting insulating plate 42 will only be pressed a limited distance B. That is, the limiting insulating plate 42 is hinged with the lower end of the fixed horn angle 41, and there is a height difference B at the upper end, when the overhead lines 6 slide to the limiting insulating plate 42, the upper end of the limiting insulating plate 42 will be pressed to be flush with the upper end of the fixed horn angle 41, and the height difference B becomes 0.

[0045] 4) The trigger mechanism (micro switch) 44 is installed on the limit insulation plate 42. When the contact wire 6 does not slide to the limit insulation plate 42, that is, the height difference B is not 0, as shown in Fig. 5, the trigger mechanism 44 is pressed by the fixed bow angle 41, and the trigger mechanism 44 is in the off state, and the pantograph works normally.

[0046] 5) When the contact wire 6 slides to the limit insulation plate 42, the limit insulation plate 42 is pressed by the contact wire 6, and the limit insulation plate 42 rotates around the hinge point A. The height difference B of the limit insulation plate 42 relative to the fixed bow angle 41 becomes 0, as shown in Fig. 6, the trigger mechanism 44 is no longer pressed by the fixed bow angle 41, and the trigger mechanism 44 is in the off state, and a pantograph lowering signal is sent. After the pantograph controller receives the pantograph lowering signal, it is determined that the contact wire is in an abnormal working area, and then the pantograph is controlled to quickly lower to the bottom to avoid the possibility of causing pantograph and catenary accidents when the contact wire slides to the abnormal working area.

[0047] 5) One end of the reset spring 43 is connected to the limit insulation plate 42, and the other end is connected to the fixed bow angle 41. When the contact wire 6 slides to the limit insulation plate 42, the limit insulation plate 42 will rotate around the hinge point A after being pressed downward. When the contact wire 6 slides away from the limit insulation plate 42, the limit insulation plate 42 will rotate in the opposite direction around the hinge point A due to the restoring force of the reset spring 43, until the trigger mechanism 44 contacts the fixed bow angle 41 and is pressed tightly against the fixed bow angle 41 and no longer moves upward. That is, under the action of the reset spring 43, the limit insulation plate 42 rotates upward, and the trigger mechanism (micro switch) moves upward until the trigger mechanism 44 is blocked by the fixed bow angle 41 and no longer moves. Since the trigger mechanism 44 cannot move, the limit insulation plate 42 fixed thereto also no longer moves, and returns to the initial state, and the pantograph raising process is manually controlled.

[0048] 7) When the contact wire 6 again presses the limit insulation plate 42, an electrical signal will be triggered again. When the contact wire 6 moves away, the limit insulation plate 42 will return to the initial value.

[0049] 8) As shown in the drawings, the limit insulation plate 42 has a large range in the horizontal direction. As long as the contact wire 6 presses the limit insulation plate 42 at any position, the trigger mechanism 44 can be triggered, so the signal output reliability is high.

[0050] 9) In this scheme, a second bow angle 4 is installed at the inner end of the positive slide plate 1 and the negative slide plate 2, respectively. When the contact wire 6 slides, if the first second bow angle 4 does not trigger a signal, the second second bow angle 4 can effectively output a signal, further improving the reliability of the pantograph protection function of the present application.

[0051] It should be noted that the reset spring 43 in the above embodiment is a cylindrical tension spring, and other forms such as a leaf spring or a torsion spring can also be used.

[0052] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make many possible changes and modifications to the technical solution of the present application or modify it into equivalent embodiments with equivalent changes without departing from the scope of the technical solution of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application should fall within the protection scope of the technical solution of the present application.

Claims

1. An electrified highway pantograph head, comprising a positive slide plate and a negative slide plate, the outer end of the positive slide plate and the outer end of the negative slide plate are respectively installed with a first bow angle, characterized in that: The inner end of the positive slide plate and the inner end of the negative slide plate are respectively provided with a second bow angle, which comprises a fixed bow angle and a limiting insulating plate arranged in parallel with the fixed bow angle. The upper end of each of the two fixed bow angles is fixedly connected with the inner end of the positive slide plate and the negative slide plate respectively. The lower end of each of the two fixed bow angles is hingedly connected with the limiting insulating plate through a hinge point A. A reset spring and a triggering mechanism for detecting the position of the overhead line and triggering the lowering of the bow are arranged between the limiting insulating plate and the fixed bow angle. When the overhead line slides within the specified range of the bow head of the pantograph, the free end of the limiting insulating plate is higher than the fixed bow angle by a limited height.

2. The electrified highway pantograph head of claim 1, wherein, The triggering mechanism is a mechanical microswitch.

3. The electrified highway pantograph head of claim 1, wherein, The triggering mechanism is a sensor.

4. An electrified road pantograph, characterized by The electric highway pantograph bow head according to any one of claims 1-3.

Images