CN112026591A - Contact wire module connecting device and mobile contact net system - Google Patents
Contact wire module connecting device and mobile contact net system Download PDFInfo
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- CN112026591A CN112026591A CN202010756266.4A CN202010756266A CN112026591A CN 112026591 A CN112026591 A CN 112026591A CN 202010756266 A CN202010756266 A CN 202010756266A CN 112026591 A CN112026591 A CN 112026591A
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- 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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- 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
- B60M1/26—Compensation means for variation in length
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Abstract
The utility model relates to a contact wire component connecting device and a mobile contact net system, wherein the contact wire component connecting device is arranged in the mobile contact net system used in rail transit, and the mobile contact net system comprises a stand column for supporting a contact wire component, a telescopic mechanism, a limiting mechanism and a connecting mechanism; the telescopic mechanism comprises a component which can move relatively, one end of the whole telescopic mechanism is hinged on the upper part of the upright post, the other end of the whole telescopic mechanism is a free end, and the telescopic mechanism can be stretched and retracted along the direction transverse to the upright post under the action of external force so as to enable the free end to enter or leave the space above the track in the horizontal direction; the limiting mechanism is arranged between the relatively movable components in the telescopic mechanism and used for limiting the movable range between the relatively movable components; the connecting mechanism is arranged at the free end of the telescopic mechanism and is used for connecting the contact wire assembly; wherein, telescopic machanism is flexible by the drive of contact wire subassembly, and stop gear can restrict telescopic machanism's flexible length.
Description
Technical Field
The disclosure relates to the technical field of rail transit mobile contact networks, in particular to a contact wire assembly connecting device and a mobile contact network system.
Background
In freight rail transit yards, it is necessary to load the freight from above the cars by mechanical means such as a forklift or a loader. Electrified railway lines are generally powered by contact networks, contact lines for providing electric power for electric locomotives are arranged above the rails, but space above trains is occupied by equipment loading operation in a station yard, so that the contact networks cannot be arranged above the rails in the station yard. Generally, the train is stopped before arriving at a freight station yard, and the diesel locomotive is used for carrying out the whole-train traction operation, so that the efficiency is lower. One known solution is to provide a mobile catenary in the yard, i.e. by providing a column along the rail, and by providing a movable support bar on the column, which support bar can be rotated in a horizontal or vertical direction, the contact line and the catenary being connected at the ends of the support bar. When the supporting rod rotates, the contact line and the carrier cable at the tail end of the supporting rod are moved away from the position right above the train, and space is made for loading operation. In order to ensure that the contact lines move synchronously, rigid contact lines are generally used, which cannot adapt to curved freight stations.
Disclosure of Invention
To solve the above technical problems or to at least partially solve the above technical problems, the present disclosure provides a contact wire assembly connecting device and a mobile contact net system.
In a first aspect, a contact line assembly connecting device is provided, which is arranged in a mobile contact line system used in rail transit, wherein the mobile contact line system comprises a stand column for supporting a contact line assembly, and the stand column comprises a telescopic mechanism, a limiting mechanism and a connecting mechanism; the telescopic mechanism comprises a component which can move relatively, one end of the whole telescopic mechanism is hinged on the upper part of the upright post, the other end of the whole telescopic mechanism is a free end, and the telescopic mechanism can be stretched and retracted along the direction transverse to the upright post under the action of external force so as to enable the free end to enter or leave the space above the track in the horizontal direction; the limiting mechanism is arranged between the relatively movable components in the telescopic mechanism and used for limiting the movable range between the relatively movable components; the connecting mechanism is arranged at the free end of the telescopic mechanism and is used for connecting the contact wire assembly; wherein, telescopic machanism is flexible by the drive of contact wire subassembly, and stop gear can restrict telescopic machanism's flexible length.
In a possible implementation manner, the telescopic mechanism is a connecting rod assembly, one part of the structure of the connecting rod assembly is hinged to the upright post, the other part of the structure can move relative to the one part of the structure so that the connecting rod assembly can stretch relative to the upright post, the tail end of the other part of the structure is a free end, and the limiting mechanism can limit the relative rotation angle between the components of the connecting rod assembly.
With reference to the foregoing possible implementation manner, in a second possible implementation manner, the connecting rod assembly includes a hinge rod set, the hinge rod set includes two hinged rod pieces, and two ends of the hinge rod set are hinged to the upright and the contact line assembly respectively.
In combination with the foregoing possible implementation manner, in a third possible implementation manner, the hinge rod group includes a first rod group and a second rod group that are symmetrically arranged, each of the first rod group and the second rod group includes two hinged rods, two ends of the first rod group are hinged to the upright column and the contact line assembly, respectively, and two ends of the second rod group are hinged to the upright column and the contact line assembly, respectively.
With reference to the foregoing possible implementation manners, in a fourth possible implementation manner, the limiting mechanism is disposed between two rods of the first rod group and between two rods of the second rod group to limit an opening angle between the two rods of the first rod group and the second rod group.
With reference to the foregoing possible implementation manners, in a fifth possible implementation manner, the limiting mechanism is disposed between the two rods of the first rod group to limit an opening angle between the two rods, and the limiting mechanism is disposed between the first rod group and the column to limit a closing angle between the first rod group and the column.
In combination with the above possible implementation manners, in a sixth possible implementation manner, the limiting mechanism is disposed between the first rod group and the upright to limit a closing angle between the first rod group and the upright, and the limiting mechanism is disposed between the second rod group and the upright to limit a closing angle between the second rod group and the upright.
With reference to the foregoing possible implementation manners, in a seventh possible implementation manner, the limiting mechanism includes a fixing member and an adjusting member, the adjusting member is adjustably connected to the fixing member, and the fixing member is configured to be connected to the telescopic mechanism.
In combination with the above possible implementation manners, in an eighth possible implementation manner, hinge points at which the first rod set and the second rod set are connected to the upright post are not overlapped.
In a ninth possible implementation, in combination with the above possible implementations, the hinge points at which the first set of rods and the second set of rods are connected to the contact wire assembly do not coincide.
In combination with the above possible implementations, in a tenth possible implementation, the hinge shaft of the link assembly is parallel to the pillar.
In a second aspect, a mobile contact net system is provided for providing power for rail transit, comprising a first portal, a second portal, a plurality of uprights, a plurality of contact wire assembly connecting devices and contact wire assemblies; the first portal comprises a vertical frame and a transverse frame, the vertical frame is arranged on the side of the track, and the transverse frame is fixed above the vertical frame and spans the track; the second portal frame comprises a vertical frame and a transverse frame, the vertical frame is arranged on the side of the track, the transverse frame is fixed above the vertical frame and spans the track, and a preset distance is reserved between the first portal frame and the second portal frame; the plurality of upright posts are arranged between the first portal frame and the second portal frame; the contact line assembly connecting devices are arranged on the stand columns respectively, are any one of the contact line assembly connecting devices in the first aspect and have different telescopic strokes; the contact wire assembly is positioned between the first portal and the second portal and is connected in series with the contact wire assembly connecting devices on the plurality of uprights.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages: the contact line assembly connecting device is provided with a limiting mechanism, the limiting mechanism can limit the telescopic length of the telescopic mechanism, and the extension range of the telescopic mechanism can be set according to actual needs so as to adapt to the shape of a station yard.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a front view of one embodiment of a contact wire assembly connection device as it is extended;
FIG. 2 is a left side view of the contact wire assembly attachment apparatus of FIG. 1;
FIG. 3 is a top view of the contact wire assembly attachment apparatus of FIG. 1;
FIG. 4 is a schematic view of an alternative extended length contact wire assembly attachment apparatus;
FIG. 5 is a schematic view of the structure of the wire clamp and the wire clamp base of FIG. 1;
FIG. 6 is a schematic structural view of the limiting mechanism in FIG. 2;
FIG. 7 is a schematic structural view of a spacing mechanism in another embodiment;
fig. 8 is a schematic structural view of a mobile catenary in one embodiment;
FIG. 9 is a top view of the second mast of FIG. 8;
fig. 10 is a side view of the second portal of fig. 9.
Description of reference numerals:
100-a first portal, 110-a first vertical frame, 120-a second vertical frame, 130-a transverse frame, 150-a walking device, 151-a main body, 152-a walking wheel, 153 a-a second guide wheel;
200-a second portal, 210-a first stand, 220-a second stand, 230-a crossbearer, 250-a running gear, 253 a-a second guide wheel, 251-a body, 252-a running wheel, 241 d-a movable pulley, 241-a first drive mechanism, 241 a-an actuating member, 241 b-a reel, 241 c-a cable, 242-a second drive mechanism, 242 a-a first guide wheel, 242 b-a counterweight body, 242 c-a cable, 242 d-a cable;
310-telescoping mechanism, 311-first rod group, 311 a-big arm, 311 b-small arm, 312-second rod group, 312 a-big arm, 312 b-small arm, 313-fixed plate, 320-connecting mechanism, 325-wire clamp seat, 326-wire clamp;
410-catenary cables;
500-limiting mechanism, 510-fixing piece, 520-fixing piece, 511-adjusting piece and 521-adjusting piece; 500 a-a first stop mechanism;
600 a-a second stop mechanism; 800-upright column;
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
The movable contact net system provided by the disclosure can change the relative position between the contact line and the upright column, so that the contact line is moved away from the upper part of the track, and the carrying operation is avoided. And the crossbearers of the first portal and the second portal are provided with walking devices, and the upright posts are provided with contact wire assembly connecting devices. The contact wire assembly connecting device comprises a telescopic mechanism, a limiting mechanism and a connecting mechanism, wherein one end of the telescopic mechanism is connected to the stand column, and the other end of the telescopic mechanism is provided with the connecting mechanism to be connected with the contact wire assembly. The limiting mechanism limits the extension length of the telescopic mechanism. The contact wire assembly is connected in series with the walking device and the telescopic mechanism. When the traveling device moves along the cross frame, the traveling device drives the contact line and the telescopic mechanism to follow up, so that the contact line is moved away from the upper part of the track to give way for loading operation; or to move the contact wire above the track to provide the electric locomotive with preparatory electric power. The telescopic mechanisms provide support and limit for the contact wires, and the telescopic mechanisms on the stand columns are mutually independent and can move synchronously. The telescopic mechanisms limited by the limiting mechanisms on different stand columns can extend out by different lengths. In one row of stand, telescopic machanism extension length on the middle standing pillar is less, and on the stand of middle standing pillar both sides, telescopic machanism extension length increases progressively for final telescopic machanism's end is arranged into the arc, thereby can adapt to curved track. The technical scheme of the disclosure is further explained by combining the drawings in the specification.
Referring to fig. 1-6, fig. 1 is a front view of an embodiment of a contact wire assembly connecting device as it is extended, fig. 2 is a left side view of the contact wire assembly connecting device of fig. 1, fig. 3 is a top view of the contact wire assembly connecting device of fig. 1, fig. 4 is a schematic view of the contact wire assembly connecting device of fig. 1 as it is extended further, fig. 5 is a schematic view of the structure of the wire clamp and the wire clamp base of fig. 1, and fig. 6 is a schematic view of the structure of the limiting mechanism of fig. 2.
The contact wire assembly connecting device comprises a telescoping mechanism 310, a connecting mechanism 320 and a limiting mechanism 500, which are arranged at the top end of the upright column 800.
As shown in fig. 2, in the embodiment, the telescopic mechanism 310 includes a connecting rod assembly, and a part of the connecting rod assembly is connected to the upright column 800, and the part of the connecting rod assembly is movable relative to the upright column 800; another portion of the linkage assembly is configured as a free end, and a coupling mechanism 320 is disposed at the free end and is adapted to couple to a contact wire assembly. Specifically, the connecting rod assembly is hinged to a fixing plate 313, and the fixing plate 313 is fixed on the upright column 800; the attachment mechanism 320 is provided with a wire holder 325 at the upper end for securing the messenger wire in the contact wire assembly and a wire clamp 326 at the lower end for securing the contact wire. The telescoping mechanism 310 is able to extend during the process of pulling the attachment mechanism 320 away from the upright 800 and provide support and guidance during the process of pulling the attachment mechanism 320 away from the upright 800.
Further, the link assembly includes a first rod set 311 and a second rod set 312. The first lever set 311 includes two hinged lever members, i.e., a large arm 311a and a small arm 311b in the drawing. The second lever group 312 includes a large arm 312a and a small arm 312b that are hinged. One end of the large arm 311a and one end of the large arm 312a are respectively hinged to two points on the fixing plate 313, the other ends are respectively hinged to one ends of the small arm 311b and the small arm 312b, and the other ends of the small arm 311b and the small arm 312b are respectively hinged to two points on the connecting mechanism 320. The hinge axes of the hinge structures are all parallel to the pillar 800. Large arm 311a and large arm 312a have equal lengths, and small arm 311b and small arm 312b have equal lengths. The first bar set 311 and the second bar set 312 are in a plane-symmetric relationship. When the included angle between the large arm 311a and the small arm 311b becomes smaller, the connecting mechanism 320 approaches the fixing plate 313; when the included angle becomes larger, the connecting mechanism 320 is far away from the fixing plate 313. The hinge points of the first rod set 311 and the second rod set 312 on the fixing plate 313 do not coincide. In some alternative embodiments, the hinge points of the first rod set 311 and the second rod set 312 and the connection mechanism 320 are not coincident, so that the whole mechanism can only move in the direction perpendicular to the track to enter or leave the space above the track, and is more stable.
In some alternative embodiments, the hinge points of the first rod set 311 and the second rod set 312 on the fixing plate 313 coincide, and the hinge points of the first rod set 311 and the second rod set 312 and the connecting mechanism 320 coincide. In other alternative embodiments, only the first bar set 311 or the second bar set 312 may be provided to connect the contact wire assemblies.
The wire clamp holder 325 is a connection base of the wire clamp 326, and in this embodiment, the wire clamp 326 includes a jaw portion for holding the contact wire and a pin portion hinged to the wire clamp holder 325, and an axial direction of the pin portion is a vertical direction. When the contact line is subjected to radial force or bending moment, the pin shaft part can rotate adaptively, so that the contact line is allowed to bend in the horizontal direction instead of the vertical direction, and the impact on the pantograph is reduced.
The spacing mechanism 500 is disposed between the relatively movable members of the telescoping mechanism 310 for defining a range of motion between the relatively movable members. In this embodiment, the limiting mechanism is disposed between the first rod set and the upright column to limit the closing angle between the first rod set and the upright column, and is disposed between the second rod set and the upright column to limit the closing angle between the second rod set and the upright column. Specifically, when large arm 311a and large arm 312a rotate relative to upright 800, the included angle between the two can change. Stop mechanism 500 is disposed between large arm 311a and large arm 312a to limit the minimum angle therebetween. Specifically, the limiting mechanism 500 is fixed on the fixing plate 313 and located between the large arm 311a and the large arm 312a, and when the included angle between the large arm 311a and the large arm 312a becomes smaller to a predetermined angle, the limiting mechanism 500 interferes with the large arm 311a and the large arm 312a to limit the continuous rotation thereof.
In this embodiment, the limiting mechanism 500 includes a fixing member 510, a fixing member 520, an adjusting member 511, and an adjusting member 521. The fixing piece is a base body, and the adjusting piece is arranged on the fixing piece and is adjustable relative to the base body. The fixing members 510 and 520 are fixed to the fixing plate 313, and screw holes are provided on the surfaces thereof facing the large arm 311a and the small arm 312b, and the adjusting members 511 and 521 are screws, which are respectively provided in the screw holes. The extension of the adjusting member 511 and the adjusting member 521 on the fixing member can determine the contact position of the adjusting member with the large arm 311a and the large arm 312a, so as to obtain the desired minimum included angle between the large arm 311a and the large arm 312 a. In some alternative embodiments, the adjustment member may not be provided, and the contact position between the fixing member and the large arm 311a may be set only by setting the length and position of the fixing member.
Referring to fig. 7, fig. 7 is a schematic view of a limiting mechanism and its arrangement position in another embodiment. In this embodiment, the limiting mechanism is disposed between the two rods of the first rod group to define an opening angle between the two rods, and is disposed between the first rod group and the upright to define a closing angle between the first rod group and the upright. Specifically, a first position-limiting mechanism 500a is disposed between the large arm 312a and the fixing plate 313, and the first position-limiting mechanism 500a is located between the large arm 311a and the large arm 312 a. When the telescopic mechanism 310 extends outward, the angle between the large arm 311a and the large arm 312a decreases, and the angle between the large arm 312a and the fixing plate 313 increases until the large arm 312a contacts with the first stopper mechanism 500 a. A second limiting mechanism 600a is disposed between the large arm 312a and the small arm 312b, and is hinged coaxially with a hinge point between the large arm 312a and the small arm 312 b. The second stop mechanism 600a includes two stops with a predetermined included angle between which the large arm 312a and the small arm 312b can rotate, the two stops defining the maximum included angle between the large arm 312a and the small arm 312 b.
In the above technical solution, the first limiting mechanism 500a and the second limiting mechanism 600a jointly limit the moving range of two moving pairs in the telescopic mechanism 310, so as to limit the extension range of the whole telescopic mechanism 310, and when the messenger cable pulls the connecting mechanism 320 to move, the telescopic mechanism 310 can stop extending when extending to a predetermined position. In this embodiment, the two lever sets are in a plane-symmetric structure, and therefore, the same effect can be achieved when the two position-limiting mechanisms are respectively disposed between the large arm 311a and the small arm 311b and between the large arm 311a and the fixing plate 313. In some alternative embodiments, a limiting mechanism is disposed between two bars of the first bar set and between two bars of the second bar set to define the opening angle between the two bars of the first bar set and the second bar set. That is, the above-described effects can be achieved by providing one second stopper mechanism 600a between the large arm 311a and the small arm 311b and providing one second stopper mechanism 600a between the large arm 312a and the small arm 312 b.
Between the upright column 800 and the contact wire assembly, the telescopic mechanism 310 and the connecting mechanism 320 are used for realizing connection, support and positioning, so that the contact wire assembly can be stably and reliably far away from and close to the upright column 800 under the support and guide of the telescopic mechanism 310, and the function of abdicating above the track is realized. Moreover, the telescoping mechanism 310 is a link mechanism, when the relative position between the members changes, the rods can approach and attach to each other, and the rods move to a position substantially parallel to the track in a rotating manner, so that the space occupied by accommodating the rods is small.
The movable contact net system is a part of the contact net system and is used for providing power for trains of the freight station yard, the length of the movable contact net system is equivalent to that of the freight station yard, and two ends of the movable contact net system are electrically connected with the fixed contact net system. The mobile contact line system shown in the present disclosure can provide a mobile contact line having a radian through contact line assembly connecting devices having different telescopic lengths, so that the contact line system is adapted to a station having a radian. The upright posts for connecting and supporting the contact line assembly do not need to be arranged into an arc shape, so that the construction difficulty can be reduced.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a mobile catenary in an embodiment. The mobile overhead line system comprises a first portal 100, a second portal 200, a plurality of columns 800, a contact line assembly, a driving device, a walking device and a contact line assembly connecting device. The first door frame 100, the second door frame 200 and the upright column 800 are arranged at the side of the track according to a preset distance, the top ends of the first door frame 100 and the second door frame 200 are used for installing a driving device and a walking device, and the upright column 800 is used for arranging the telescopic mechanism 310. The first gantry 100 and the second gantry 200 are provided with a driving device and a traveling device on the cross beam crossing the track. The upright column 800 is provided with a telescopic mechanism 310 and a connecting mechanism 320, the telescopic mechanism 310 can be extended and contracted along the radial direction of the upright column 800, and the connecting mechanism 320 is fixed at the tail end of the telescopic mechanism. Both ends of the contact wire assembly are connected to the traveling devices of the first gantry 100 and the second gantry 200, and the middle portion of the contact wire assembly is connected to the connection mechanism 320 of the column 800 to form a series connection to the connection mechanism 320.
The first mast 100 is disposed on the entry side of the yard. The first mast 100 includes a first stand 110, a second stand 120, and a cross-frame 130. The first standing frame 110 and the second standing frame 120 are symmetrically arranged on two sides of the rail, the cross frame 130 crosses the rail, and two ends of the cross frame 130 are respectively fixed on the top ends of the first standing frame 110 and the second standing frame 120. The cross frame 130 is provided with a traveling device 150, and the driving device is used for driving the traveling device 150 to reciprocate on the cross frame 130.
The second portal 200 is disposed at the departure side of the yard with a certain distance from the first portal 100. The second portal 200 includes a first stand 210, a second stand 220, and a cross frame 230. The first standing frame 210 and the second standing frame 220 are symmetrically arranged at two sides of the rail, the cross frame 230 crosses the rail, and two ends of the cross frame are respectively fixed at the top ends of the first standing frame 210 and the second standing frame 220. The transverse frame 230 is provided with a walking device 250, and the driving device is used for driving the walking device 250 to reciprocate on the transverse frame 230. The running gear 250 is used to connect the other end of the contact wire assembly.
A plurality of uprights 800 are disposed between the first mast 100 and the second mast 200. The figure schematically shows 6 upright columns, and the 6 upright columns are respectively provided with a limiting mechanism, so that the extension lengths of the contact line component connecting devices on the two middle upright columns are the shortest, the extension lengths of the contact line component connecting devices on the upright columns on the two sides of the two upright columns are longer, and the extension lengths of the contact line component connecting devices on the two outermost upright columns are the longest. The travel of the traveling device on the first gantry 100 and the second gantry 200 is greater than the telescopic travel of the contact wire assembly connecting device on the outermost column. In the contact wire assembly, the two end sections of the messenger and the contact wire are respectively hung on the second guide wheel 253a and the second guide wheel 153a, and after the direction is changed by the guide wheels, one end is connected to the counterweight to be tensioned, and the other end is fixed on the gantry.
When the two walking devices move towards 220 on the cross beam, the contact wire assembly can be pulled to move towards 220 integrally, the contact wire assembly in a tensioning state can pull the contact wire assembly connecting device on each upright column to extend out, and finally reach the respective limit extending position, so that the contact wire assembly forms an arc shape. When the two walking devices move towards 210, the contact wire assembly can be driven to integrally move towards 210, and each contact wire assembly connecting device is pulled to retract. The travel of the walking device is larger than the telescopic range of the contact wire assembly connecting device, and the contact wire assembly after the balance weight is tensioned can pull the contact wire assembly to automatically compensate in the length direction, so that each contact wire assembly connecting device can retract to the original position.
The cross frame 130 of the first portal frame 100 is provided with a traveling device 150, the cross frame 230 of the second portal frame 200 is provided with a traveling device 250, two ends of the contact wire assembly are respectively connected to the traveling device 150 and the traveling device 250, and when the traveling device 150 and the traveling device 250 synchronously move in the same direction, the contact wire assembly can be driven to be away from or close to the upright column 800 integrally. The driving mechanism of the first gantry 100 is used for driving the traveling device 150 to reciprocate on the cross frame 130, and the driving mechanism of the second gantry 200 is used for driving the traveling device 250 to reciprocate on the cross frame 230.
On the second gantry 200, the driving mechanism includes a first driving mechanism 241 and a second driving mechanism 242. The traveling device 250 includes a main body 251 and a plurality of traveling wheels 252. The main body 251 is a base body for mounting other parts, and the traveling wheels 252 are used for supporting the main body 251 to travel on the cross frame 230. The axis of the travel wheels 252 is perpendicular to the upper surface of the cross frame 230 so that the travel mechanism 250 can carry loads from contact wire assembly tension. The traveling device 250 is further provided with a second guide wheel 253a and a movable pulley 241d, wherein the second guide wheel 253a is used for being connected with the second driving mechanism 242, and the movable pulley 241d is used for being connected with the first driving mechanism 241. The main body 251 is a multilayer structure formed by rectangular plates, and the number of the road wheels 252 is 8, and the road wheels are distributed on four corners of two layers of the rectangular plates. The traveling wheel 252 has an annular groove formed on an outer circumferential surface thereof, and is capable of being fitted to the cross frame 230, preventing the body 251 from being displaced in a vertical direction, and ensuring that the body 251 reciprocates only along a longitudinal direction of the cross frame 230.
The first drive mechanism 241 includes an actuator 241a, a spool 241b, and a cable 241 c. The actuator 241a is an electric motor, the spool 241b is coaxially provided on the output shaft of the actuator 241a, one end of the cable 241c is wound around the spool 241b, the other end is fixed to the cross frame 230 after passing over the movable pulley 241d on the main body 251, and the cable 241c and the movable pulley 241d form a movable pulley structure. When the actuator 241a drives the spool 241b to rotate, the cable 241c is wound on the surface of the spool 241b, and the traveling device 250 is pulled to approach the first stand 210.
The second driving mechanism 242 includes two first guide wheels 242a, a weight body 242b, a cable 242c, and a cable 242 d. The weight body 242b is used to provide the gravitational force applied thereto as a driving force, the cable 242c and the cable 242d are two segments of a cable, and are used to transmit the driving force to the traveling device 250, and the first guide wheel 242a is used to convert the vertical force into the horizontal force. Specifically, two first guide wheels 242a are disposed on the top of the second stand 220, and the axes thereof are horizontal and parallel and along the extending direction of the rail. The top end of the counterweight body 242b is provided with a pulley, and the pull cable 242c and the pull cable 242d form a movable pulley block structure with the pulley, and the counterweight body 242b is hung on the second vertical frame 220 through two first guide pulleys 242 a. The ends of the pulling cables 242c and 242d are connected to the traveling device 250, so that the weight of the weight body 242b is transmitted to the traveling device 250 to drive the traveling device 250 to move on the cross frame 230 in a direction approaching the second stand 220.
More specifically, one end of the cable 242c connected to the running gear 250 is connected to the messenger 410 via a second guide wheel 253a provided on the main body 251. The axis of the second guide wheel 253a is vertical, and the guy cable 242c turns 90 degrees after winding one fourth of the outer peripheral surface of the second guide wheel 253a, so that the guy cable originally parallel to the cross frame 230 is changed into the guy cable perpendicular to the cross frame 230, and is collinear with the carrier cable 410 to realize connection. The weight of the counterweight 242b provides power not only to move the running gear 250 but also to tension the messenger wire 410.
The driving means of the cross frame 130 of the first mast 100 is the same as the first driving mechanism 241 and the second driving mechanism 242. The traveling device 150 includes a main body 151, a plurality of traveling wheels 152, and a second guide wheel 153 a. The construction and connection of the above-mentioned devices are the same as the corresponding devices on the first portal 200, and are not described in detail here.
According to the technical scheme, only two driving devices for active driving are needed, so that the walking device 150 and the walking device 250 can move synchronously, and the difficulty and the cost of electrification control are reduced. In addition, the gravity of the counterweight body 242b is used for providing driving force and tensioning the carrier cable 410, other mechanisms are not needed for driving, the structure is simple and reliable, and energy is saved. The traveling device 250 is driven to move by the movable pulley block, so that the requirement on the power of the motor can be reduced.
In some alternative embodiments, the cables 242c and 242d may be directly connected to the body 251. In other alternative embodiments, the weight body 242b is connected to the traveling device 250 through a cable and a guide wheel.
In some alternative embodiments, the first driving mechanism 241 and the second driving mechanism 242 can be solutions of the actuating member 241a, the winding drum 241b and the pulling cable 241 c. In other alternative embodiments, the first driving mechanism 241 may also be a nut-and-screw mechanism, the nut is fixed on the running gear 250, the screw is parallel to the cross frame 230, and the motor drives the screw to rotate forward and backward to realize the reciprocating movement of the running gear 250. In alternative embodiments, the running gear 250 may also be driven along the cross-frame 230 by pneumatic means, hydraulic means, or a rack and pinion system. In other alternative embodiments, the traveling device 250 may be driven to reciprocate along the cross frame 230 by a slider-crank mechanism.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. A contact wire assembly connecting device provided in a moving contact net system for rail transit, the moving contact net system including a column for supporting a contact wire assembly, comprising:
the telescopic mechanism comprises a component which can move relatively, one end of the whole telescopic mechanism is hinged to the upper part of the upright post, the other end of the whole telescopic mechanism is a free end, and the telescopic mechanism can be stretched and retracted along the direction transverse to the upright post under the action of external force so as to enable the free end to enter or leave the space above the track in the horizontal direction;
the limiting mechanism is arranged between the relatively movable components in the telescopic mechanism and used for limiting the movable range between the relatively movable components; and
the connecting mechanism is arranged at the free end of the telescopic mechanism and is used for connecting the contact wire assembly;
the telescopic mechanism is driven to stretch by the contact wire assembly, and the limiting mechanism can limit the stretching length of the telescopic mechanism.
2. The contact wire assembly connecting device as claimed in claim 1, wherein the telescoping mechanism is a link assembly, one part of the structure of the link assembly is hinged to the upright, the other part of the structure is movable relative to the one part of the structure to enable the link assembly to telescope relative to the upright, the other part of the structure terminates in the free end, and the limiting mechanism is capable of limiting the relative rotational angle between the components of the link assembly.
3. The contact wire assembly connecting device of claim 2, wherein the linkage assembly comprises an articulated rod set comprising two articulated rod members, the two ends of the articulated rod set being respectively articulated with the upright and the contact wire assembly.
4. The contact wire assembly connecting device of claim 3, wherein the set of articulating bars comprises a first set of bars and a second set of bars symmetrically disposed, each of the first set of bars and the second set of bars comprising two articulating bars, wherein the first set of bars has two ends respectively articulating with the post and the contact wire assembly, and the second set of bars has two ends respectively articulating with the post and the contact wire assembly.
5. The contact wire assembly connecting device of claim 4, wherein the limiting mechanism is disposed between two rods of the first rod set and between two rods of the second rod set to limit the opening angle between the two rods of the first rod set and the second rod set.
6. The contact wire assembly connecting device of claim 4, wherein the limiting mechanism is disposed between the two bars of the first bar set to limit the opening angle between the two bars, and wherein the limiting mechanism is disposed between the first bar set and the post to limit the closing angle between the first bar set and the post.
7. The contact line assembly connecting device of claim 4, wherein the limiting mechanism is disposed between the first set of bars and the post to limit the angle of closure between the first set of bars and the post, and wherein the limiting mechanism is disposed between the second set of bars and the post to limit the angle of closure between the second set of bars and the post.
8. The contact wire assembly connecting device as recited in claim 4, wherein the limiting mechanism comprises a fixed member and an adjusting member, the adjusting member being adjustably coupled to the fixed member, the fixed member being adapted to be coupled to the retracting mechanism.
9. The contact wire assembly attachment apparatus of any of claims 4-8, wherein the hinge points at which the first and second sets of bars are attached to the upright do not coincide.
10. The contact wire assembly attachment apparatus of any of claims 4-8, wherein the hinge point at which the first set of rods and the second set of rods are attached to the contact wire assembly do not coincide.
11. The contact wire assembly connecting device according to any one of claims 2 to 8, wherein the hinge axis of the connecting rod assembly is parallel to the upright.
12. A mobile contact net system for providing power for rail transit is characterized by comprising
The first portal comprises a vertical frame and a transverse frame, the vertical frame is arranged on the side of the track, and the transverse frame is fixed above the vertical frame and stretches across the track;
the second portal frame comprises a vertical frame and a transverse frame, the vertical frame is arranged on the side of the track, the transverse frame is fixed above the vertical frame and stretches across the track, and a preset distance is reserved between the first portal frame and the second portal frame;
a plurality of columns arranged between the first portal and the second portal;
a plurality of contact wire assembly connecting devices respectively arranged on the plurality of upright posts, wherein the contact wire assembly connecting devices are as claimed in any one of claims 1 to 11, and have different telescopic strokes; and
a contact wire assembly positioned between said first mast and said second mast, said contact wire assembly being serially connected to said contact wire assembly connecting means on said plurality of uprights.
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| CN202010756266.4A CN112026591B (en) | 2020-07-31 | 2020-07-31 | Contact line assembly connecting device and mobile contact net system |
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| CN202010756266.4A CN112026591B (en) | 2020-07-31 | 2020-07-31 | Contact line assembly connecting device and mobile contact net system |
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Cited By (1)
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| WO2022143216A1 (en) * | 2020-12-28 | 2022-07-07 | 兰州新伟车辆装备有限公司 | Compensation swing arm-based mobile catenary and operation method |
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| CN112026591B (en) | 2024-04-09 |
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