CN212171983U

CN212171983U - Tension balancer and moving contact net system

Info

Publication number: CN212171983U
Application number: CN202021571713.0U
Authority: CN
Inventors: 陈志�; 冯变花; 李蔚; 梁建华
Original assignee: Smart Pivot Beijing Technology Co ltd
Current assignee: Beijing Jiupu Technology Industry Development Co.,Ltd.
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2020-12-18
Anticipated expiration: 2030-07-31

Abstract

The utility model relates to a tension balancer and a movable contact net system, wherein the tension balancer is arranged between a supporting device and a contact line in the contact net system for rail transit, the supporting device is arranged at the upper part of an upright post in the contact net system, the supporting device is used for connecting and positioning the contact line, the tension balancer comprises a base body and two connecting components, the tension balancer is fixed on the supporting device through the base body, one end of each of the two connecting components is hinged on the base body, and the other end of each connecting component extends out towards two directions away from the base body; the other end of the two connecting assemblies is used for hinging the contact line. The two connecting components connect and position the contact line, so that the contact line is more stable. The tail ends of the two connecting components used for connecting the contact wires can rotate relative to the supporting device, and when the length of the contact wires changes, the tail ends of the connecting components can simultaneously generate compensation displacement in the horizontal direction and the vertical direction, so that the sagging of the contact wires can be reduced.

Description

Tension balancer and moving contact net system

Technical Field

The disclosure relates to the technical field of rail transit mobile contact networks, in particular to a tension balancer and a mobile contact network system.

Background

In the rail transit technology, a common power supply mode of an electric locomotive supplies power to a contact net, and the power is supplied by contact of a pantograph on the roof of the electric locomotive and a contact line in the contact net. The contact line is erected along the track, the length is large, and the contact line is exposed in an environment with large outdoor temperature difference, and the length change of the contact line caused by thermal expansion and cold contraction is large. When the contact line becomes long, the line segment between the two upright posts can sag; when the contact line is shortened, the line segment between the two upright posts is tightened. The above-mentioned changes may change the contact relationship between the pantograph and the contact line, which may cause conditions of increased wear or unstable power supply.

Disclosure of Invention

To solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a tension balancer and a mobile contact net system.

The tension balancer comprises a base body and two connecting components, wherein the tension balancer is fixed on the supporting device through the base body, one end of each of the two connecting components is hinged to the base body, and the other end of each of the two connecting components extends out towards two directions away from the base body; the other end of the two connecting assemblies is used for hinging the contact line.

In a first possible implementation, the two connecting assemblies each form with the base a parallelogram linkage.

In combination with the above possible implementation manners, in a second possible implementation manner, the connecting rod in the parallel four-bar mechanism includes a sleeve, a pin shaft and a clamp, the pin shaft is connected with the clamp, the pin shaft can rotate relative to the sleeve, and the clamp is used for fixing the contact line.

With reference to the foregoing possible implementation manners, in a third possible implementation manner, the contact line assembly includes a messenger wire and a contact line, the contact line is fixed to the connection assembly, and the messenger wire is connected to the base.

In combination with the above possible implementation manners, in a fourth possible implementation manner, the links of the parallelogram four-bar mechanism are arranged along the vertical direction.

In combination with the foregoing possible implementation manners, in a fifth possible implementation manner, the supporting device is a telescopic mechanism, the telescopic mechanism includes a first rod group and a second rod group, the first rod group includes two hinged rod pieces, the second rod group includes two hinged rod pieces, two ends of the first rod group are respectively hinged to the upright column and the base of the tension balancer, and two ends of the second rod group are respectively hinged to the upright column and the base of the tension balancer.

In a sixth possible implementation manner, in combination with the above possible implementation manners, hinge points at which the first rod set and the second rod set are connected to the upright post are not overlapped.

In a seventh possible implementation manner, in combination with the above possible implementation manners, hinge points at which the first bar set and the second bar set are connected with the base body do not coincide.

In combination with the above possible implementations, in an eighth possible implementation, the hinge shaft of the connecting rod assembly is parallel to the upright.

In a second aspect, there is provided a mobile catenary system for providing power to an electric locomotive in rail transit, the mobile catenary system comprising a plurality of columns, a supporting device, a tension balancer, and a contact wire, the plurality of columns being erected along a rail, the supporting device being disposed at a top of the columns, the tension balancer being fixed to the supporting device and connected to the contact wire, the tension balancer being any one of the tension balancers described in the first aspect.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages: the two connecting components connect and position the contact line, so that the contact line is more stable. The tail ends of the two connecting components used for connecting the contact wires can rotate relative to the supporting device, and when the length of the contact wires changes, the tail ends of the connecting components can simultaneously generate compensation displacement in the horizontal direction and the vertical direction, so that the sagging of the contact wires can be reduced.

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 a retraction mechanism provided by an embodiment of the present disclosure;

FIG. 2 is a top view of the telescoping mechanism of FIG. 1;

FIG. 3 is a left side view of the telescoping mechanism of FIG. 1;

FIG. 4 is a front view of the telescoping mechanism in an extended state provided by embodiments of the present disclosure;

FIG. 5 is a top view of the telescoping mechanism of FIG. 4;

FIG. 6 is a left side view of the telescoping mechanism of FIG. 4;

FIG. 7 is an enlarged view of the tension balancer of FIG. 4;

FIG. 8 is a schematic structural view of the connecting assembly of FIG. 7;

fig. 9 is a schematic structural diagram of a mobile contact network system provided in accordance with an embodiment of the present disclosure;

fig. 10 is a top view of the mobile catenary of fig. 9;

figure 11 is a schematic view of the contact wire assembly of the moving catenary of figure 10 shown retracted;

reference numerals:

100-a first portal frame, 110-a first vertical frame, 120-a second vertical frame, 130-a transverse frame, 141-a first driving mechanism, 142-a second driving mechanism and 150-a walking device;

200-a second portal, 210-a first stand, 220-a second stand, 230-a cross, 241-a first drive mechanism, 242-a second drive mechanism; 250-a walking device;

300-upright column, 310-telescopic 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-fixing plate, 314-end plate;

320-tension balancer, 321-base, 322 a-first connection assembly, 322 b-second connection assembly, 323a, 323 b-rocker arm, 324a, 324 b-rocker arm, 325a, 325 b-link, 326a, 326 b-clip;

400-contact wire assembly, 410-carrier cable, 420-mobile contact wire;

a-track, b-stationary contact line, d-stationary contact line.

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 structure of the telescoping mechanism 310 and the tension balancer 320 will be described in detail with reference to fig. 1 to 8, where fig. 1 is a front view of a retracted state of the telescoping mechanism 310 provided in an embodiment of the present disclosure, fig. 2 is a top view of the telescoping mechanism 310 in fig. 1, fig. 3 is a left side view of the telescoping mechanism 310 in fig. 1, fig. 4 is a front view of an extended state of the telescoping mechanism 310 provided in an embodiment of the present disclosure, fig. 5 is a top view of the telescoping mechanism 310 in fig. 4, fig. 6 is a left side view of the telescoping mechanism 310 in fig. 4, fig. 7 is an enlarged view of the tension balancer in fig. 4, and fig. 8 is a schematic structural diagram of the connecting assembly in fig. 7.

The pantograph mechanism 310, which serves as a support means for connecting and positioning the contact line, is provided at the upper portion of the columns in the contact net system. The telescoping mechanism 310 includes a linkage assembly having a portion thereof connected to the column and another portion thereof forming a free end and connected to a tension balancer. Specifically, the link assembly is fixed to the mast 300 by a fixing plate 313, and the tension balancer 320 is connected to the base of the tension balancer 320 by an end plate 314, and the tension balancer 320 is connected to the contact wire assembly.

The linkage 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 hinged to two points on the fixing plate 313, respectively. One end of the small arm 311b and one end of the small arm 312b are hinged to the large arm 311a and the small arm 311b, respectively, and the other ends thereof are hinged to two points on the end plate 314, respectively. The hinge axes of the hinge structures are all parallel to the shaft 300. 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 angle between the large arm 311a and the small arm 311b becomes smaller, the end plate 314 approaches the fixing plate 313, and when the angle becomes larger, the end plate 314 moves 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 are not overlapped, and/or the hinge points of the first rod set 311 and the second rod set 312 and the end plate 314 are not overlapped, so that the whole mechanism can only move in the direction perpendicular to the track a, and is more stable.

In some alternative embodiments, the hinge points of the first and

second rod sets

311, 312 on the fixed plate 313 coincide, and/or the hinge points of the first and

second rod sets

311, 312 and the end plate 314 coincide. In other alternative embodiments, only the first bar set 311 or only the second bar set 312 may be provided in connection with the contact wire assembly 400.

An end plate 314 is vertically fixed to free ends of the first and

second bar groups

311 and 312, and lower ends thereof are used to fix the tension balancer 320. The lower end of the tension balancer 320 is connected to the contact wire assembly 400.

The tension balancer 320 includes a base 321, a first connecting member 322a, and a second connecting member 322 b. The base 321 is a connection plate having a predetermined length, which is fixed to the lower end of the end plate 314, and has both ends for hinge-coupling the first connection member 322a and the second connection member 322b, respectively. The free ends of the first connecting assembly 322a and the second connecting assembly 322b are used to connect the contact wire assembly 400.

First link assembly 322a includes rocker arm 323a, rocker arm 324a, link 325a, and clip 326 a. The rocker 323a, the rocker 324a and the link 325a form a parallelogram linkage with one end of the base 321. Specifically, one end of each of the

rocker arms

323a and 324a with equal length is hinged to two vertically arranged points at one end of the base 321, respectively, to form two rocker arms capable of swinging in a vertical plane; the other ends of the rocker arm 324a and the rocker arm 323a are hingedly connected by both ends of a link 325 a. The connecting rod 325a comprises a sleeve body and a pin shaft, the outer surface of the sleeve body is hinged with the rocker arm 323a and the rocker arm 324a, and an inner hole and the pin shaft form a shaft hole which can rotate relatively to be matched and connected. The lower end of the pin is attached to a collar 326 a. The yoke 326a includes two fastening portions having a predetermined interval, and a line connecting the two fastening portions is parallel to the rail a when the yoke 326a is mounted to the link 325 a.

The second connecting unit 322b has the same structure as the first connecting unit 322a, including a swing arm 323b, a swing arm 324b, a connecting rod 325b, and a yoke 326b, and the structure is symmetrical to the second connecting unit 322b about a vertical plane. The first connecting member 322a is disposed at an angle of about 150 degrees with respect to the lower surface of the base 321, and the second connecting member 322b is disposed at the same angle with respect to the base 321. The first connecting assembly 322a, the second connecting assembly 322b, the contact wire assembly 400 and the base 321 form an isosceles trapezoid structure. When the contact wire assembly 400 undergoes a length change due to thermal expansion and contraction, the first connecting assembly 322a and the second connecting assembly 322b can rotate relative to the base 321, and the ends of the first connecting assembly and the second connecting assembly connected to the contact wire assembly 400 can move closer to or away from each other to compensate for the length change of the contact wire assembly 400. The parallelogram linkage has good stability and can play a good role in positioning the contact wire assembly 400. The shaft holes between the sleeve body and the pin shaft in the connecting rod 325a are matched to enable the clamp 326a to rotate freely, so that the clamp can be aligned automatically, and the two fastening parts of the clamp can be automatically adjusted to be parallel to the track a after being connected with the movable contact wire 420.

The contact wire assembly 400 includes a messenger wire 410 and a moving contact wire 420. The messenger 410 is secured to the top of the end plate 314. The moving contact wire 420 is fixed to the bottom of the tension balancer 320. There is also a dropper connection between the messenger wire 410 and the moving contact wire 420.

When the contact line 420 between the two parallel four bars generates thermal expansion, the tail ends of the two parallel four bar mechanisms are far away from each other to compensate the lengthening of the contact line; meanwhile, the two tail ends of the two parallel four-bar mechanisms also rise, so that the height of the contact line is increased, and the contact line is prevented from sagging. Moreover, the clamp 326a can be kept horizontal all the time in the ascending or descending process, and the clamp does not generate extra bending moment on the contact line, so that the contact line can be kept horizontal.

In some alternative embodiments, the first connecting component 322a may also be a single rod hinged to both ends of the base 321, and the second connecting component 322b may also be a single rod hinged to both ends of the base 321. In alternative embodiments, the clamp 326a and the connecting rod 325a may be fixedly connected. The connecting points of the tension balancer and the contact line can be increased by connecting and positioning the contact line through the two connecting components (or the rod pieces), the plurality of connecting points can share the sagging deformation of the contact line, and the maximum sagging amount of the contact line can be reduced. In addition, the total contact line weight is borne by the plurality of connection points, and the load borne by each connection point is reduced, so that excessive load is prevented from being concentrated on one connection point.

The connection, support and positioning between the upright 300 and the contact wire assembly 400 are realized through the telescoping mechanism 310 and the tension balancer 320, so that the contact wire assembly 400 can be stably and reliably far away from and close to the upright 300 under the support and guidance of the telescoping mechanism 310, and the function of abdicating above the track a 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 the position substantially parallel to the track a by rotating, so that no extra space is occupied for accommodating the rods. In addition, since the contact wire assembly 400 can move in the direction perpendicular to the rail a, and finally, the contact wire assembly 400 cannot be displaced in the length direction, the connection and the disconnection between the contact wire assembly 400 and two fixed contact lines are more convenient.

In order to facilitate understanding of technical effects of the technical solutions of the present disclosure, the following description is provided with reference to the accompanying drawings. Fig. 9 is a schematic structural view of a mobile catenary system provided according to an embodiment of the disclosure, fig. 10 is a top view of the mobile catenary system in fig. 9, and fig. 11 is a schematic structural view of the mobile catenary system in fig. 10 when a contact wire assembly is retracted.

The mobile contact net system is one part of the contact net system, and two ends of the mobile contact net system are fixed contact net systems and can obtain electric power from the fixed contact net systems to supply power to the locomotive. The length of the contact line in the mobile contact net system is equivalent to the length of the freight yard. The mobile catenary includes a first mast 100, a second mast 200, a plurality of uprights 300, a catenary assembly 400, a drive assembly, a travel assembly, a telescoping mechanism 310, and a tension balancer 320. The first mast 100, the second mast 200 and the mast 300 are arranged at a predetermined interval at the side of the track, and the top ends thereof are used to mount the driving means, the traveling means, the telescopic mechanism 310 and the tension balancer 320. 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 shaft 300 is provided with a telescopic mechanism 310 and a tension balancer 320, the telescopic mechanism 310 can be extended and contracted along the radial direction of the shaft 300, and the tension balancer 320 is fixed at the tail end of the telescopic mechanism 310. The contact wire assembly 400 is coupled at both ends to the traveling mechanisms of the first and

second gantries

100 and 200 and at the center portion to the tension balancer 320 of the mast 300.

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 stand 110 and the second stand 120 are symmetrically disposed at both sides of the rail. The cross frame 130 crosses the rail a, and both ends thereof are fixed to the top ends of the first and second stands 110 and 120, respectively. The cross frame 130 is provided with a driving device and a traveling device 150. The driving means is used for driving the traveling means 150 to reciprocate on the cross frame 130. The running gear 150 is used to attach one end of the contact wire assembly 400. Specifically, the driving means includes a first driving mechanism 141 and a second driving mechanism 142. The first driving mechanism 141 is used for driving the traveling device 150 to move toward the first stand 110. The second driving mechanism 142 is used for driving the traveling device 150 to move toward the second stand 120.

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 stand 210 and the second stand 220 are symmetrically disposed at both sides of the rail. The cross frame 230 spans the rail a, and both ends thereof are fixed to the top ends of the first and

second stands

210 and 220, respectively. The cross frame 230 is provided with a driving device and a traveling device 250. The driving device is used for driving the walking device 250 to reciprocate on the cross frame 230. Running gear 250 is used to connect the other end of contact wire assembly 400. Specifically, the driving device includes a first driving mechanism 241 and a second driving mechanism 242. The first driving mechanism 241 is used for driving the traveling device 250 to move toward the first stand 210. The second driving mechanism 242 is used for driving the traveling device 250 to move toward the second stand 220. The running gear 150 and the running gear 250 should move in synchronization.

Telescoping mechanism 310 is secured to the upper portion of shaft 300. One end of telescoping mechanism 310 is fixed to shaft 300 and telescoping mechanism 310 itself is movable to move the free end (the other end) away from and toward shaft 300. The telescoping direction of the telescoping mechanism 310 is radial to the mast 300 and perpendicular to the track a.

A tension balancer 320 is provided at the free end of the telescopic mechanism 310. A tension balancer 320 is used in conjunction with the contact wire assembly 400.

The contact line assembly 400 comprises a messenger wire 410 and a movable contact line 420 which are arranged side by side in the vertical direction, two ends of the messenger wire 410 and the movable contact line 420 are respectively fixed on the traveling device 150 and the traveling device 250, the middle part of the messenger wire 410 and the movable contact line 420 are fixed on the tension balancer 320 of the upright post 300, and the contact line assembly 400 is equivalent to the fact that the traveling device 150, the traveling device 250 and the tension balancer 320 are connected in series. When the traveling unit 150 and the traveling unit 250 move synchronously, the tension of the contact wire assembly 400 is used to drive the telescoping mechanism 310 and the tension balancer 320 to follow, so that the contact wire assembly 400 moves between the right above and the side above the track a. The telescoping mechanism 310 has a supporting function on the contact line assembly 400, and the telescoping mechanism 310 has a telescoping stroke limitation, so that the contact line assembly 400 can be limited and positioned.

Referring to fig. 11, the retracting mechanism 310 is in an extended state, such that the contact wire assembly 400 is located directly above the track a, and the moving contact wire 420 is in communication with the fixed contact wire b and the fixed contact wire d. The electric locomotive may now be provided with power from the moving contact wire 420 to normally enter or pass through the segment. Referring to fig. 10, the retracting mechanism 310 is in a retracted state, and the contact wire assembly 400 is then positioned above the track side, thereby providing working space for the top of the electric locomotive to facilitate loading with equipment.

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

1. A tension balancer, used for setting up between supporting device and contact wire in the contact network system for rail transit, the said supporting device is set up in the upper portion of pillar in the contact network system, the said supporting device is used for connecting and positioning the said contact wire, characterized by that, the said tension balancer includes the base body and two link assemblies, the said tension balancer is fixed to the said supporting device through the said base body, one end of each of two said link assemblies is hinged to the said base body, another end stretches out to two directions far away from the said base body separately; the other ends of the two connecting components are used for hinging the contact wires.

2. The tension balancer of claim 1, wherein the two connection assemblies each form a parallelogram linkage with the base.

3. The tension balancer of claim 2, wherein the contact wire assembly comprises a messenger wire and a contact wire, the contact wire being secured to the connection assembly, the messenger wire being connected to the base.

4. A tension balancer as claimed in claim 3, wherein the links of the parallelogram mechanism comprise a sleeve, a pin and a yoke, the pin being connected to the yoke, the pin being rotatable relative to the sleeve, and the yoke being used to secure the contact wires.

5. The tension balancer of claim 4, wherein the links of the parallelogram linkage are disposed in a vertical direction.

6. A tension balancer as claimed in claim 5, wherein the support means is a telescopic mechanism comprising a first set of two hinged bars and a second set of two hinged bars, the first set of bars being hinged at their ends to the column and to the base of the tension balancer, respectively, and the second set of bars being hinged at their ends to the column and to the base of the tension balancer, respectively.

7. The tension balancer of claim 6, wherein hinge points at which the first and second bar sets are connected to the columns do not coincide.

8. The tension balancer of claim 7, wherein the first and second bar sets do not coincide with hinge points of the base.

9. The tension balancer of claim 8, wherein the hinge axis of the link assembly is parallel to the post.

10. A moving contact net system for providing power to an electric locomotive in rail transit, comprising a plurality of posts erected along a rail, support means provided on top of the posts, a tension balancer fixed to the support means and connecting the contact wire, the tension balancer being as claimed in any one of claims 1 to 9.