CN220562588U

CN220562588U - Tension providing device for tensioning power supply body and freight station mobile contact net

Info

Publication number: CN220562588U
Application number: CN202322238349.6U
Authority: CN
Inventors: 于晓英; 李彦华
Original assignee: Sichuan Zhihua Electric Co ltd
Current assignee: Sichuan Zhihua Electric Co ltd
Priority date: 2023-08-21
Filing date: 2023-08-21
Publication date: 2024-03-08
Anticipated expiration: 2033-08-21

Abstract

The utility model relates to a tension providing device for tensioning a power supply body and a freight yard mobile contact net, at least comprising a portal frame, a suspension assembly, the tension providing device and the power supply body; the tension providing device provides tension in a first direction from one side of the suspension assembly to act on the suspension assembly; the power supply body provides a second-direction pulling force from the other side of the suspension assembly to act on the suspension assembly; when the power supply body heat receiving wire body stretches, the tension providing device directly or indirectly pulls the suspension assembly to move towards the outer side of the portal relative to the portal in the extending direction of the railway; when the power supply body is shortened by the cold wire body, the power supply body directly or indirectly pulls the suspension assembly to move towards the inner side of the door frame relative to the door frame in the extending direction of the railway. The utility model can also effectively tension the contact line under the condition that the contact line is stretched or shortened due to expansion caused by heat and contraction caused by cold, and overcomes a plurality of adverse effects caused by the fact that the contact line cannot be tensioned in the prior art.

Description

Tension providing device for tensioning power supply body and freight station mobile contact net

Technical Field

The utility model belongs to the technical field of electrified railway mobile contact networks, and particularly relates to a tension providing device for tensioning a power supply body and a freight station mobile contact network.

Background

The railway freight station is the place for the start, transfer and termination of the railway freight transportation production process, is directly connected with each department of national economy, and is the main link of railway freight transportation.

Particularly for a coal loading freight station, the contact line is arranged below the bin in a penetrating way, and when a freight train enters or exits from a freight station, the contact line needs to be moved to the upper part of a railway, so that the pantograph of the freight train can be conveniently lifted to take electricity from the contact line; when the pantograph of the freight train moves out of the loading and unloading area with the freight train, the movable contact line needs to be translated to the side of the railway so as to facilitate the coal loading operation of the silo.

In the existing silo lower mobile contact net, the contact line is easy to loosen in the use process, firstly, due to the fact that the contact line expands with heat and contracts with cold, secondly, the fixing devices of the mobile contact net are easy to loosen at the two ends of the mobile contact net in the use process, the contact line is caused to loosen and sink, and potential safety hazards exist in the use process of the loose and sinking contact net. The loose contact line tension is insufficient, the safety distance is insufficient, accidents are easy to occur, the loose contact line has the risk of bowing and is easy to swing left and right, and when the swinging contact line is positioned at the outer side of the pantograph, poor contact is caused, and electricity cannot be taken. The contact line is a single line, and the loose contact line is impacted by the upper top of the pantograph in the use process, so that the contact line is easy to deform and has potential safety hazards such as bending.

Disclosure of Invention

In view of the above, in order to overcome the defects of the prior art, the utility model aims to provide a tension providing device for tensioning a power supply body and a freight yard mobile contact net, which can effectively tension a contact line under various working conditions even if the contact line is stretched or shortened due to expansion caused by heat and contraction caused by cold, and overcome a plurality of adverse effects caused by the fact that the contact line cannot be tensioned in the prior art.

In order to achieve the above object, the present utility model provides a tension providing device for tensioning an electric power supply, at least comprising a gantry, a suspension assembly, the tension providing device and the electric power supply; the suspension assembly is directly or indirectly arranged at the beam of the portal frame, and the power supply body is partially or completely suspended on the suspension assembly in a suspension manner; the tension providing device provides tension in a first direction from one side of the suspension assembly to act on the suspension assembly directly or indirectly; the power supply body provides a pulling force in a second direction from the other side of the suspension assembly to directly or indirectly act on the suspension assembly; the suspension assembly can move towards the outer side of the portal or towards the inner side of the portal relative to the portal in the extending direction of the railway; when the power supply body heat receiving wire body stretches, the tension providing device directly or indirectly pulls the suspension assembly to move towards the outer side of the door frame relative to the door frame in the extending direction of the railway; when the power supply body is shortened by the cold wire body, the power supply body directly or indirectly pulls the suspension assembly to move towards the inner side of the door frame relative to the door frame in the extending direction of the railway.

Further, the tension providing device provides a constant tension by adopting a device capable of outputting the constant tension, and the tension provided by the device capable of outputting the constant tension directly or indirectly acts on the power supply body to tension the power supply body.

Further, the device capable of outputting constant tension adopts any one of the following forms:

first kind: the device capable of outputting constant pulling force adopts an electric pulling device, and the force output by the electric pulling device directly or indirectly acts on the power supply body to tension the power supply body;

second kind: the device capable of outputting constant tension adopts a hydraulic push-pull device, and the force output by the hydraulic push-pull device directly or indirectly acts on the power supply body to tension the power supply body;

third kind: the device capable of outputting constant pulling force adopts a pneumatic push-pull device, and the force output by the pneumatic push-pull device directly or indirectly acts on the power supply body to tension the power supply body.

Further, the tension providing device adopts a counterweight component to provide tension, and comprises the counterweight component, a rotating component and a pulling piece, wherein the other end of the pulling piece is directly or indirectly arranged on the hanging component after bypassing at least the rotating component; the tension provided by the tension providing device directly or indirectly acts on the power supply body, and the tension providing device is used for providing tension for the power supply body.

Further, the weight provided by the counterweight assembly directly or indirectly acts on the suspension assembly to provide tension for the power supply;

the counterweight assembly has at least two operating states:

first operating state: when the power supply body is loosened or has a tendency of loosening, the height of the counterweight assembly is reduced, the gravity of the counterweight assembly directly or indirectly acts on the suspension assembly as the pulling force of the power supply body, and all or part of the suspension assembly is driven to move towards the outer side of the portal frame in the extending direction of the railway so as to tension the power supply body; or alternatively

The second working state: when the power supply body contracts or has a contraction tendency, the power supply body pulls all or part of the suspension assembly to move towards the inner side of the portal frame in the extending direction of the railway, so that the suspension assembly is utilized to drive the counterweight assembly to ascend.

Further, the automatic lifting device also comprises a counterweight supporting frame which is independently arranged outside the portal frame, wherein the counterweight component is hung on the counterweight supporting frame, and the counterweight component directly or indirectly acts on the hanging component by taking the gravity of the counterweight component as a pulling force through a pulling piece.

Further, the anti-swing structure is arranged on the counterweight supporting frame which is arranged outside the portal independently, the anti-swing structure at least comprises a guide component and a sliding piece, the root position of the sliding piece is directly or indirectly arranged on the counterweight component, the sliding piece can ascend or descend along with the counterweight component, and the guide component is used for providing ascending or descending movement guide for the sliding piece.

Further, the suspension assembly comprises at least a lower anchor, more than one insulator and a movable member; the movable piece is directly or indirectly arranged on the cross beam of the portal frame, one end of the insulator is directly or indirectly fixedly arranged on the movable piece, the other end of the insulator is directly or indirectly fixedly arranged on the lower anchor, and one end of the power supply body is directly or indirectly fixedly arranged on the lower anchor.

Further, the tension provided by the weight assembly acts directly or indirectly through a pulling member on any viewable area on the movable member in the suspension assembly.

Further, the device also comprises an intermediate anchor, wherein the intermediate anchor is fixedly arranged in any visible area on the movable piece, and the pulling force provided by the counterweight assembly acts on the intermediate anchor through the pulling piece.

Further, the portal spans the railway, and the suspension assembly can move left and right on the portal to drive the power supply body to be in a working position or a non-working position; the suspension assembly is further capable of moving relative to the mast in the direction of extension of the railway or maintaining a tendency to move relative to the mast in the direction of extension of the railway; the tension providing device is used for driving the suspension assembly to move relative to the portal frame in the extending direction of the railway according to the tightness degree of the power supply body so that the power supply body is in a tensioning state.

Further, the device also comprises a moving mechanism, wherein the moving mechanism is used for directly or indirectly driving the suspension assembly to move left and right on the portal so as to drive the power supply body to be in a working position or a non-working position.

Further, a driving mode for driving the moving mechanism to move on the portal beam and a structure mode for realizing relative movement are as follows:

the driving mode for driving the moving mechanism to move on the portal beam adopts the following first or second mode:

first driving method: the device comprises a driving motor and a chain, wherein the driving motor is used for driving the chain to rotate positively and negatively, and the chain is used for driving the moving mechanism to move left and right on a portal beam in a positive and negative rotating way, so that the power supply body is driven to switch between a working position and a non-working position; or alternatively

The second driving mode: any one of a hydraulic pushing device, a pneumatic pushing device or an electric pushing device is adopted to drive the moving mechanism to move left and right on the portal beam, so that the power supply body is driven to switch between a working position and a non-working position;

the structural form for driving the moving mechanism to realize relative movement on the portal beam at least comprises any one of the following:

the first structural configuration to achieve relative movement: the structure of the sliding way is adopted between the moving mechanism and the portal beam, so that the moving mechanism can move left and right on the portal beam after being pushed and pulled by the force;

the second structural configuration for achieving relative movement: the sliding groove structure is used between the moving mechanism and the portal beam, so that the moving mechanism can move left and right on the portal beam after being pushed and pulled by force;

third structural configuration for achieving relative movement: the sliding rail is used between the moving mechanism and the portal beam, so that the moving mechanism can move left and right on the portal beam after being pushed and pulled by force;

fourth structural form for realizing relative movement: the device comprises a plurality of track pulleys, wherein the plurality of track pulleys are directly or indirectly arranged on a moving mechanism, the plurality of track pulleys can move on a portal beam, and the moving mechanism can move on the portal beam through the plurality of track pulleys after being pushed and pulled by force; or alternatively

Fifth structural form for realizing relative movement: the device comprises a plurality of walking rollers, wherein the walking rollers are arranged on a moving mechanism, the walking rollers can move on a portal beam, and the moving mechanism can move on the portal beam through the arranged walking rollers after being pushed and pulled under the stress;

the first driving mode or the second driving mode drives the moving mechanism to move left and right on the portal beam by utilizing any one of the first to fifth structural modes for realizing relative movement.

Further, the device also comprises a fixing component which is directly or indirectly fixed on the moving mechanism, wherein the hanging component is directly or indirectly arranged on the fixing component, and the hanging component can move relative to the fixing component after being pulled by force;

further, the device also comprises a moving structure which is used for enabling the hanging component to form movement relative to the fixed component after being pulled by force;

further, the moving structure adopts any one of the following structural forms;

the first structural form: the structure form of the slide way is adopted between the hanging component and the fixed component, so that the hanging component can move relative to the fixed component after being pulled by force;

The second structural form: the structure form of the sliding chute is adopted between the hanging component and the fixing component, so that the hanging component can move relative to the fixing component after being pulled by force;

the third structural form: the structure form of the sliding rail is adopted between the hanging component and the fixing component, so that the hanging component can move relative to the fixing component after being pulled by force;

fourth structural form: the movable part in the suspension assembly can move by utilizing the track pulleys under the condition that the movable part is pulled by force;

fifth structural form: the device comprises a plurality of track pulleys, wherein the track pulleys are directly or indirectly arranged on a suspension assembly, the track pulleys can move on a fixed assembly, and the track pulleys can be driven to move on the fixed assembly under the condition that the suspension assembly is pulled by force; or alternatively

Sixth structural form: the device comprises a plurality of travelling wheels, wherein the travelling wheels are arranged on a fixed assembly or a suspension assembly, and the arranged travelling wheels are utilized to realize the relative movement between the suspension assembly and the fixed assembly.

The second aspect of the utility model also provides a freight yard mobile contact net, wherein the mobile contact net is provided with at least a first portal and a second portal, and the second portal is provided with a plurality of doors, wherein

The power supply tensioning device is arranged at the first door frame or the second door frame; or alternatively

The power supply tensioning device is arranged at the first portal and the second portal.

Further, the first portal is provided with an anchor feeding device, and the second portal is provided with the power supply tensioning device; one end of the power supply body is fixed on the anchor-falling device of the first portal, the other end of the power supply body is arranged on the suspension assembly, and the power supply body can be in a tensioning state through the arranged tension providing device.

In the utility model, the tension providing device provides tension in a first direction from one side of the suspension assembly to directly or indirectly act on the suspension assembly; the power supply body provides a pulling force in a second direction from the other side of the suspension assembly to directly or indirectly act on the suspension assembly; when the power supply body heat receiving wire body stretches, the tension providing device directly or indirectly pulls the suspension assembly to move towards the outer side of the door frame relative to the door frame in the extending direction of the railway; when the power supply body is shortened by the cold wire body, the power supply body directly or indirectly pulls the suspension assembly to move towards the inner side of the door frame relative to the door frame in the extending direction of the railway.

The utility model has at least the following effects:

can be under various operating modes effectively, even the contact line is because the expansion with heat and contraction with cold causes under the condition that existing contact line extends or shortens, also can effectual tensioning contact line, overcome in the prior art because the contact line can not be by tensioning cause a great deal of adverse effect.

The problem that the current supply body (contact line) is stretched under the condition that the heated wire body is stretched, the tension providing device is used for tensioning the current supply body, and the problems that in the prior art, due to insufficient tension of the current supply body, looseness and sinking, the pantograph of a freight train is jacked up and the safety distance is insufficient are solved.

The risk of a loose contact wire bowing in the prior art is avoided, the problem of left-right swing of the contact wire is solved, and safety guarantee is provided for lifting and taking electricity of the pantograph.

The problem that a loose contact wire is easy to deform and bend due to the fact that the contact wire is impacted by the upper top of a pantograph in the using process in the prior art is solved by effectively tensioning the power supply body.

Compared with the condition that spring devices are used for tensioning contact wires at the portal frames in the prior art, the portal frames at the two sides are provided with moving mechanisms (also called moving trolleys) for driving the contact wires to be in a working position or a non-working position, the moving trolleys at the portal frames at the two sides are driven by corresponding driving devices to operate, and the moving trolleys are synchronous to operate, but are difficult to synchronize in a strict sense, the spring devices are used for tensioning the contact wires at the two ends of a power supply body (contact wires) in the prior art, the spring devices are limited in expansion and contraction amount, and relatively constant tension can not be better provided for the power supply body, and the tension providing device for tensioning the power supply body can be used for providing tension for the power supply body more stably.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a construction of an apparatus for outputting a constant tension in accordance with the present utility model;

FIG. 2 is a schematic view of the construction of the present utility model employing a counterweight assembly to provide tension;

FIG. 3 is a schematic view of the construction of the counterweight support frame of the utility model;

FIG. 4 is a schematic view of the structure of the present utility model with a suspension assembly;

FIG. 5 is a schematic illustration of the construction of the present utility model employing an intermediate anchor;

FIG. 6 is a schematic view of the mobile catenary of the present utility model in a working position;

fig. 7 is a schematic view of the mobile catenary of the present utility model in a non-operational position.

In the figure: 1. a door frame; 2. a suspension assembly; 21. a lower anchor; 22. an insulator; 23. a movable member; 3. means capable of outputting a constant pulling force; 4. a power supply; 5. a tension providing device; 51. a counterweight assembly; 52. a rotating assembly; 53. a pulling member; 6. a counterweight support frame; 7. an anti-swing structure; 8. a guide assembly; 9. a slider; 10. an intermediate anchor; 11. a moving mechanism; 12. a fixing assembly; 13. a first portal; 14. a second portal; 15. and (5) an anchor setting device.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus consistent with some aspects of the utility model as detailed in the accompanying claims.

As shown in fig. 1 and 2, a first aspect of the present embodiment provides a tension providing device for tensioning an electric power supply, at least including a gantry 1, a suspension assembly 2, the tension providing device, and the electric power supply 4;

the suspension assembly 2 is directly or indirectly arranged at the beam of the portal 1, and the power supply body 4 is partially or completely suspended on the suspension assembly 2 in a suspending manner; the tension providing means provides a tension in a first direction from one side of the suspension assembly 2 acting directly or indirectly on the suspension assembly 2; the power supply body 4 provides a pulling force in a second direction from the other side of the suspension assembly 2 to directly or indirectly act on the suspension assembly 2; the suspension assembly 2 can move towards the outside of the door frame 1 or towards the inside of the door frame 1 relative to the door frame 1 in the extending direction of the railway; when the power supply body 4 receives the extension of the wire body, the tension providing device directly or indirectly pulls the suspension assembly 2 to move towards the outer side of the door frame 1 relative to the door frame 1 in the extending direction of the railway; when the power supply body 4 is shortened by the cold wire, the power supply body 4 directly or indirectly pulls the suspension assembly 2 to move towards the inner side of the door frame 1 relative to the door frame 1 in the extending direction of the railway.

The current supply body 4 in this embodiment can be understood as a contact line, which is a specific embodiment of the current supply body 4. In this embodiment, the first direction and the second direction need to be described in a supplementary manner, in this embodiment, the acting force in the first direction and the acting force in the second direction act on the suspension assembly 2 together, and the resultant force after the acting can drive the suspension assembly 2 to move towards the outside of the portal 1 or towards the inside of the portal 1 relative to the portal 1 in the railway extension direction; or alternatively

The combined action of the forces in the first and second directions maintains the suspension assembly 2 in a relatively stationary position relative to the mast 1.

In the prior art, a spring device is arranged at the place of the portal 1, the contact line is tensioned by adjusting the tightness degree of the spring, and can be tensioned to a normal working state when being initially arranged, but as time goes by, the contact line is easy to loosen in the use process of the mobile contact net, so that the contact line is loosened and sunk, and potential safety hazards exist in the use process of the loosened and sunk contact net. The loose contact line tension is insufficient, the safety distance is insufficient, accidents are easy to occur, the loose contact line has the risk of bowing and is easy to swing left and right, and when the swinging contact line is positioned at the outer side of the pantograph, poor contact is caused, and electricity cannot be taken. Meanwhile, as the contact line is a single line, the loose contact line is easy to deform and bend due to the impact of the upper top of the pantograph in the use process.

Therefore, the design of the spring device is avoided in the technical scheme provided by the embodiment, relatively constant tension is adopted to act on the contact wire, and when the contact wire is stretched by the heat receiving wire, the tension providing device is used for tensioning the power supply body, so that the problems that the power supply body is insufficient in tension, looseness and sinking, the pantograph of the freight train is jacked up and the safety distance is insufficient in the prior art are avoided.

In the case of a shortening of the length of the power supply body 4 when the contact line is cooled, the power supply body 4 pulls all or part of the suspension assembly 2 to move toward the inside of the mast 1 in the extending direction of the railway, thereby driving the counterweight assembly to rise by the suspension assembly 2. The service life of the mobile contact net is effectively prolonged.

It should be noted that the influence of thermal expansion and cold shrinkage on the power supply exists at all times, and thermal expansion and cold shrinkage are a main factor, and meanwhile, loosening of the tensioning devices at two ends of the power supply causes the power supply to be unable to be tensioned, which is another factor.

The current supply in this embodiment is understood to be a contact wire, which is a specific form of current supply. In this embodiment, the working position refers to a state that the contact line is located above the railway and the freight train can get electricity, and the non-working position refers to a state that the contact line is located at the side of the railway. In the non-working state, the contact line is positioned at the side of the railway, so that the space above the railway is reserved, and the loading and unloading operation or the maintenance operation and the like of the freight train can be conveniently carried out.

For this purpose, the applicant provides a completely new tensioning device whose working principle of tensioning is quite different from the prior art. The tensioning device provided by the implementation does not belong to the prior art, the prior patent does not disclose the technical points which are the same as or similar to the scheme in the field of railway mobile contact networks at present, and meanwhile, the technical point is not used by people in the current engineering practice.

As shown in fig. 1, in this embodiment, the tension providing device provides a constant tension by using a device 3 capable of outputting a constant tension, and the tension provided by the device 3 capable of outputting a constant tension acts directly or indirectly on the power supply 4 to tension the power supply 4. In this embodiment, the tension provided by the device 3 capable of outputting a constant tension acts directly or indirectly on the suspension assembly 2, and the suspension assembly 2 is driven to move by a resultant force formed by the acting force in the first direction and the acting force in the second direction, so as to tension the power supply body 4 or make the power supply body 4 in a state of being under a constant tension relative to the power supply body.

The device 3 capable of outputting a constant tension in this embodiment adopts any one of the following forms:

first kind: the device 3 capable of outputting constant pulling force adopts an electric pulling device, and the force output by the electric pulling device directly or indirectly acts on the power supply body 4 to tension the power supply body 4;

second kind: the device 3 capable of outputting constant tension adopts a hydraulic push-pull device, and the force output by the hydraulic push-pull device directly or indirectly acts on the power supply body 4 to tension the power supply body 4;

third kind: the device 3 capable of outputting a constant pulling force adopts a pneumatic push-pull device, and the force output by the pneumatic push-pull device directly or indirectly acts on the power supply body 4 to tension the power supply body 4.

It should be noted that, in the above three modes, the tension providing device is capable of providing a relatively constant tension. The tension providing device can further actuate the tensioning wire body under the condition that the contact wire heated wire body is prolonged due to the relatively constant tension provided by the tension providing device, and the contact wire is in a tensioning state after the balance is achieved. For example, in the case of prolonged contact wire heating wire, the electric pulling device rotates forward to further tension the contact wire; the output shaft of the hydraulic push-pull device or the pneumatic push-pull device further extends out of the tensioning contact line; similarly, under the condition that the contact line is shortened by the cold line body, the tension providing device reverses to relax the contact line; the retraction of the output shaft of the hydraulic or pneumatic push-pull allows the contact wire to relax, thereby enabling dynamic tension adjustment of the contact wire.

As shown in fig. 2 and 3, as another preferred embodiment, the tension providing device in this embodiment adopts a counterweight assembly to provide tension, and the tension providing device 5 includes a counterweight assembly 51, a rotating assembly 52, and a pulling member 53, where the other end of the pulling member 53 is directly or indirectly disposed on the suspension assembly 2 after bypassing at least the rotating assembly 52; the tension provided by the tension providing device 5 acts directly or indirectly on the power supply body 4, and the tension providing device 5 is used for providing tension for the power supply body 4.

It should be noted that the pulling member 53 according to the present utility model may use a pulling rope, such as a wire rope, as the pulling member 53.

Preferably, the weight provided by the counterweight assembly 51 in this embodiment acts directly or indirectly on the suspension assembly 2 to provide tension to the power supply 4; the counterweight assembly 51 has at least two operating states:

first operating state: when the power supply body 4 is loosened or has a tendency to loosen, the height of the counterweight assembly 51 is reduced, the gravity of the counterweight assembly 51 acts on the suspension assembly 2 directly or indirectly as the pulling force of the power supply body 4, and all or part of the suspension assembly 2 is driven to move towards the outer side of the portal frame 1 in the extending direction of a railway so as to tension the power supply body 4; or alternatively

The second working state: when the power supply body 4 is contracted or has a tendency to contract, the power supply body 4 pulls all or part of the suspension assembly 2 to move toward the inside of the portal 1 in the extending direction of the railway, thereby driving the weight assembly 51 to rise by the suspension assembly 2.

As shown in fig. 2, the present embodiment further includes a counterweight supporting frame 6 independently disposed outside the gantry 1, the counterweight assembly 51 is suspended on the counterweight supporting frame 6, and the counterweight assembly 51 directly or indirectly acts on the suspension assembly 2 as a pulling force by using a pulling member 53.

As shown in fig. 3, in this embodiment, an anti-swing structure 7 is disposed on a counterweight supporting frame 6 independently disposed outside the gantry 1, where the anti-swing structure 7 includes at least a guide assembly 8 and a sliding member 9, a root position of the sliding member 9 is directly or indirectly mounted on the counterweight assembly 51, the sliding member 9 can ascend or descend along with the counterweight assembly 51, and the guide assembly 8 is used for providing ascending or descending movement guidance for the sliding member 9.

It should be noted that, the counterweight assembly 51 in this embodiment may be formed by a plurality of weight assemblies. The weight assembly comprises a plurality of weight blocks.

As shown in fig. 4, the suspension assembly 2 in this embodiment includes at least a lower anchor 21, one or more insulators 22, and a movable member 23; the movable member 23 is directly or indirectly arranged on the cross beam of the portal 1, one end of the insulator 22 is directly or indirectly fixedly arranged on the movable member 23, the other end of the insulator 22 is directly or indirectly fixedly arranged on the lower anchor 21, and one end of the power supply body 4 is directly or indirectly fixedly arranged on the lower anchor 21. The pulling force provided by the counterweight assembly 51 acts directly or indirectly on any visible area on the movable member 23 in the suspension assembly 2 via a pulling member 53.

As shown in fig. 5, as a preferred embodiment, the present embodiment further includes an intermediate anchor 10, where the intermediate anchor 10 is fixedly disposed on any visible area of the movable member 23, and the tension provided by the weight assembly 51 acts on the intermediate anchor 10 through the pulling member 53.

In this embodiment, the door frame 1 spans a railway, and the suspension assembly 2 can move left and right on the door frame 1 to drive the power supply body 4 to be in a working position or a non-working position; the suspension assembly 2 is also able to move relative to the mast 1 in the direction of extension of the railway or to maintain a tendency to move relative to the mast 1 in the direction of extension of the railway; the tension providing device 5 is used for driving the suspension assembly 2 to move relative to the portal 1 in the extending direction of the railway according to the tightness degree of the power supply body 4 so that the power supply body 4 is in a tensioning state.

As shown in fig. 2, as a preferred embodiment, the present embodiment further includes a moving mechanism 11, where the moving mechanism 11 is used to directly or indirectly drive the suspension assembly 2 to move left and right on the gantry 1 to drive the power supply 4 to be in a working position or in a non-working position.

Preferably, a driving mode for driving the moving mechanism to move on the portal beam and a structure mode for realizing relative movement are as follows:

As a preferred embodiment, the present embodiment further includes a fixing component 12, one side of the fixing component 12 is directly or indirectly fixed on the moving mechanism 11, the suspension component 2 is directly or indirectly disposed on the fixing component 12, and the suspension component 2 can move relative to the fixing component 12 after being pulled under force;

preferably, the present embodiment further includes a moving structure for enabling the suspension assembly 2 to move relative to the fixed assembly 12 after being pulled by force;

preferably, the moving structure in this embodiment adopts any one of the following structural forms;

the first structural form: the structure form of the sliding way is adopted between the hanging component 2 and the fixed component 12, so that the hanging component 2 can move relative to the fixed component 12 after being pulled under the stress;

the second structural form: the structure form of the sliding chute between the hanging assembly 2 and the fixed assembly 12 enables the hanging assembly 2 to move relative to the fixed assembly 12 after being pulled under the stress;

The third structural form: the structure form of the sliding rail is adopted between the hanging component 2 and the fixed component 12, so that the hanging component 2 can move relative to the fixed component 12 after being pulled under the stress;

fourth structural form: comprising a number of rail pulleys mounted directly or indirectly on the fixed assembly 12, with which the movable element 23 of the suspension assembly 2 can be moved in case of being pulled by force; it should be noted that, in this embodiment, the track pulley is used to generate movement, and one specific implementation manner is as follows: the circumference of the track pulley in the embodiment is provided with an annular groove, and two side edges of the movable piece can be embedded in the annular groove, so that when the movable piece is pulled under the stress, a plurality of track pulleys can rotate, and the track pulleys are utilized to move;

fifth structural form: the device comprises a plurality of track pulleys, wherein the track pulleys are directly or indirectly arranged on a suspension assembly 2, the track pulleys can move on a fixed assembly 12, and the track pulleys can be driven to move on the fixed assembly 12 under the condition that the suspension assembly 2 is pulled by force; or alternatively

Sixth structural form: the device comprises a plurality of travelling wheels, wherein the travelling wheels are arranged on a fixed assembly 12 or a suspension assembly 2, and the arranged travelling wheels are utilized to realize the relative movement between the suspension assembly 2 and the fixed assembly 12.

Fig. 6 is a schematic diagram of the mobile contact network in the working position, and fig. 7 is a schematic diagram of the mobile contact network in the non-working position. The second aspect of the utility model also provides a freight yard mobile catenary provided with at least a first portal 13 and a second portal 14, wherein

The power supply body 4 tensioning device is arranged at the first portal 13 or the second portal 14; or alternatively

The power supply body 4 tensioning devices are arranged at the first portal 13 and the second portal 14.

As shown in fig. 7, further, in this embodiment, the first gantry 13 is provided with an anchor device 15, and the second gantry 14 is provided with the power supply tensioning device; one end of the power supply body 4 is fixed on the anchor-falling device 15 of the first portal frame 13, the other end of the power supply body 4 is arranged on the suspension assembly 2, and the power supply body 4 can be in a tensioning state through the arranged tension providing device 5.

When the power supply body 4 is in a non-working position (railway side), loading and unloading operation or maintenance operation can be performed on the freight train; when a freight train needs to enter or leave a freight station, the corresponding moving mechanisms 11 on the portal frame 1 synchronously act to drive the corresponding hanging assemblies 2 to move above the railway, so as to drive the power supply body 4 (contact line) to move towards a working position (above the railway).

In this embodiment, the power supply body 4 is in a working position or the power supply body 4 is in a non-working position or the power supply body 4 is in a moving state, and in any state, the tension providing device provides a tension in a first direction from one side of the suspension assembly 2 to directly or indirectly act on the suspension assembly 2; the power supply body 4 provides a pulling force in a second direction from the other side of the suspension assembly 2 to directly or indirectly act on the suspension assembly 2; when the power supply body 4 receives the extension of the wire body, the tension providing device 5 directly or indirectly pulls the suspension assembly 2 to move towards the outer side of the door frame 1 relative to the door frame 1 in the extending direction of the railway; when the power supply body 4 is shortened by the cold wire, the power supply body 4 directly or indirectly pulls the suspension assembly 2 to move towards the inner side of the door frame 1 relative to the door frame 1 in the extending direction of the railway.

By the scheme provided by the embodiment, the tension state of the power supply body 4 can be effectively adjusted in real time relative to constant tension. In particular, the tension providing device 5 always provides a relatively constant tension during the movement of the suspension assembly 2 by the respective movement mechanism 11 at the mast 1, which can effectively reduce or prevent the power supply body 4 from swinging. Meanwhile, the mobile contact net is outdoor electrified railway equipment and is greatly influenced by the environment. The tension providing device provided by the embodiment can adjust the output force of the tension providing device according to the actual working condition, so as to effectively provide the tensioning force. The amount of tension provided may be adjusted by, for example, increasing or decreasing the number of weight weights to adjust the weight of weight assembly 51.

It is of course also possible to adjust the amount of tension required by adjusting the amount of output force of the device 3 capable of outputting a constant tension. In the case of tensioning by using a spring device in the prior art, the first is that the problem of the elastic deformation expansion amount cannot provide relatively constant tension; and secondly, the spring device cannot be adjusted in tension once installed. The tension providing device 5 provided by the utility model can adjust the tension by increasing or decreasing the number of weight in the counterweight assembly 51. Significant benefits are provided from a post-operation and maintenance perspective.

In addition, the utility model can effectively tension the contact line under various working conditions even if the contact line is stretched or shortened due to expansion caused by heat and contraction caused by cold, and overcomes a plurality of adverse effects caused by the fact that the contact line cannot be tensioned in the prior art. The problem that the current supply body (contact line) is stretched under the condition that the heated wire body is stretched, the tension providing device is used for tensioning the current supply body, and the problems that in the prior art, due to insufficient tension of the current supply body, looseness and sinking, the pantograph of a freight train is jacked up and the safety distance is insufficient are solved. The risk of a loose contact wire bowing in the prior art is avoided, the problem of left-right swing of the contact wire is solved, and safety guarantee is provided for lifting and taking electricity of the pantograph. The problem that a loose contact wire is easy to deform and bend due to the fact that the contact wire is impacted by the upper top of a pantograph in the using process in the prior art is solved by effectively tensioning the power supply body.

While embodiments of the utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. A pulling force provides device for tensioning power supply body, its characterized in that: at least comprises a portal frame, a hanging component, a tension providing device and a power supply body;

the suspension assembly is directly or indirectly arranged at the beam of the portal frame, and the power supply body is partially or completely suspended on the suspension assembly in a suspension manner;

the tension providing device provides tension in a first direction from one side of the suspension assembly to act on the suspension assembly directly or indirectly; the power supply body provides a pulling force in a second direction from the other side of the suspension assembly to directly or indirectly act on the suspension assembly;

the suspension assembly can move towards the outer side of the door frame relative to the door frame or move towards the inner side of the door frame relative to the door frame in the extending direction of the railway;

when the power supply body heat receiving wire body stretches, the tension providing device directly or indirectly pulls the suspension assembly to move towards the outer side of the door frame relative to the door frame in the extending direction of the railway;

When the power supply body is shortened by the cold wire body, the power supply body directly or indirectly pulls the suspension assembly to move towards the inner side of the door frame relative to the door frame in the extending direction of the railway.

2. The tension providing device according to claim 1, wherein: the tension providing device provides constant tension by adopting a device capable of outputting constant tension, and the tension provided by the device capable of outputting constant tension directly or indirectly acts on the power supply body to tension the power supply body.

3. The tension providing device according to claim 2, wherein: the device capable of outputting constant tension adopts any one of the following forms:

4. The tension providing device according to claim 1, wherein: the tension providing device adopts a counterweight component to provide relatively constant gravity as tension, and comprises the counterweight component, a rotating component and a pulling piece, wherein the other end of the pulling piece is directly or indirectly arranged on the suspension component after at least bypassing the rotating component; the tension provided by the tension providing device directly or indirectly acts on the power supply body, and the tension providing device is used for providing tension for the power supply body.

5. The tension providing device as recited in claim 4, wherein: the weight provided by the counterweight assembly directly or indirectly acts on the suspension assembly to provide tension for the power supply body;

the counterweight assembly has at least two operating states:

6. The tension providing device as recited in claim 5, wherein: the weight balancing device is characterized by further comprising a weight supporting frame which is independently arranged on the outer side of the portal frame, wherein the weight balancing component is hung on the weight supporting frame, and the weight balancing component directly or indirectly acts on the hanging component through the pulling piece by taking the gravity of the weight balancing component as a pulling force.

7. The tension providing device as recited in claim 6, wherein: the counterweight support frame is provided with an anti-swing structure, the anti-swing structure at least comprises a guide assembly and a sliding piece, the root position of the sliding piece is directly or indirectly arranged on the counterweight assembly, the sliding piece can ascend or descend along with the counterweight assembly, and the guide assembly is used for providing ascending or descending movement guide for the sliding piece.

8. The tension providing device according to any one of claims 4 to 7, wherein: the suspension assembly comprises at least a lower anchor, more than one insulator and a movable piece; the movable piece is directly or indirectly arranged on the cross beam of the portal frame, one end of the insulator is directly or indirectly fixedly arranged on the movable piece, the other end of the insulator is directly or indirectly fixedly arranged on the lower anchor, and one end of the power supply body is directly or indirectly fixedly arranged on the lower anchor.

9. The tension providing device as recited in claim 8, wherein: the tension provided by the weight assembly acts directly or indirectly through a pulling member on any viewable area on the movable member in the suspension assembly.

10. The tension providing device as recited in claim 9, wherein: the balance weight assembly further comprises an intermediate anchor, wherein the intermediate anchor is fixedly arranged in any visible area on the movable piece, and the tension provided by the balance weight assembly acts on the intermediate anchor through a pulling piece.

11. The tension providing device according to any one of claims 1 to 7 or claim 9 or claim 10, wherein: the portal spans the railway, and the suspension assembly can move left and right on the portal to drive the power supply body to be in a working position or a non-working position; the suspension assembly is further capable of moving relative to the mast in the direction of extension of the railway or maintaining a tendency to move relative to the mast in the direction of extension of the railway; the tension providing device is used for driving the suspension assembly to move relative to the portal frame in the extending direction of the railway according to the tightness degree of the power supply body so that the power supply body is in a tensioning state.

12. The tension providing device as recited in claim 11, wherein: the power supply device further comprises a moving mechanism, wherein the moving mechanism is used for directly or indirectly driving the suspension assembly to move left and right on the portal frame to drive the power supply body to be in a working position or a non-working position.

13. The tension providing device as recited in claim 12, wherein: the driving mode for driving the moving mechanism to move on the portal beam and the structure mode for realizing the relative movement are as follows:

14. The tension providing device according to claim 12 or 13, wherein: the device comprises a moving mechanism, a hanging component, a fixing component and a hanging component, wherein the moving mechanism is used for moving the hanging component, the hanging component is directly or indirectly fixed on the moving mechanism, and the hanging component can move relative to the fixing component after being pulled by force.

15. The tension providing device as recited in claim 14, wherein: the movable structure is used for enabling the hanging component to be capable of moving relative to the fixed component after being pulled under the force.

16. The tension providing device as recited in claim 15, wherein: the moving structure adopts any one of the following structural forms;

17. Freight transportation station movable contact net, its characterized in that: at least a first portal and a second portal are arranged in the mobile contact net, wherein

The power supply tensioning device of any one of claims 1 to 16 being provided at the first portal or the second portal; or alternatively

The power supply tensioning device of any one of claims 1 to 16 is provided at both the first and second portal.

18. The freight yard mobile catenary of claim 17, wherein: a first mast provided with an anchor device and a second mast provided with a power supply tensioning device according to any one of claims 1 to 16; one end of the power supply body is fixed on the anchor-falling device of the first portal, the other end of the power supply body is arranged on the suspension assembly, and the power supply body can be in a tensioning state through the arranged tension providing device.