A device that can change the length of a mobile overhead contact line support.

Abstract

This application discloses a device for changing the length of a mobile contact wire support structure. This support structure is suitable for chain suspension or simple suspension and includes a support post, a contact suspension, a support assembly, a track assembly, and a positioning assembly. One end of the support post is rotatably connected to the support assembly; the track assembly is connected to the other end of the support assembly, and the track assembly and support assembly are at a certain angle; the positioning assembly is slidably connected to the track assembly and is connected to the contact suspension. When the length of the contact suspension changes, length compensation is achieved by moving the positioning assembly on the track assembly. This effectively solves the problem of unequal relocation distances and inaccurate reaching of loading and unloading positions caused by the thermal expansion and contraction of the contact suspension in existing mobile contact wire systems. It enables the mobile contact wire to be accurately and equidistantly relocated or reset under different temperature conditions, ensuring the safety and reliability of cargo loading and unloading operations.

Description

Technical Field

[0001] This application relates to the field of mobile overhead contact line technology, and more particularly to a device that can change the length of a mobile overhead contact line support device, which is suitable for chain suspension or simple suspension. Background Technology

[0002] When trains in electrified traction sections of railway enter the freight loading and unloading line, loading and unloading operations cannot be carried out due to the high-voltage overhead contact system on the freight cars (e.g., Figure 1 (As shown). Installing a mobile overhead contact system allows the contact suspension of the contact system to be moved away from directly above the freight car. Currently, most mobile overhead contact systems use a support device that rotates along the track direction to move it away from directly above the railway.

[0003] Currently, most mobile overhead contact systems utilize a method where the support device rotates along the track direction. However, due to the change in length of the contact suspension wires caused by thermal expansion and contraction, the rotation of the support device results in unequal distances that the contact suspension moves away from the track center, failing to meet the requirements for cargo loading. Utility Model Content

[0004] This application provides a device that can change the length of the mobile contact network support device, thus solving the problem that existing mobile contact networks have unequal relocation distances due to thermal expansion and contraction of the contact suspension, making it impossible to accurately reach the loading and unloading position.

[0005] In a first aspect, this utility model provides a device for changing the length of a mobile contact wire support device, including a support column, a contact suspension, a support assembly, a track assembly, a positioning assembly, and a fixed base; one end of the support column is connected to the ground, and the other end of the support column is rotatably connected to one end of the support assembly through the fixed base; the track assembly is inclinedly connected to the other end of the support assembly; the positioning assembly is slidably connected to the track assembly and is connected to the contact suspension; when the length of the contact suspension changes, the length of the support assembly is compensated by the movement of the positioning assembly on the track assembly.

[0006] In one possible implementation, the positioning component includes a pulley block, a pulley frame, a positioning rod, and a connecting component; the pulley block is rotatably connected within the pulley frame; the positioning rod is connected to one side of the pulley frame, and the connecting component is connected to the other side of the pulley frame; the positioning rod is connected to one end of the contact suspension, and the connecting component is connected to the other end of the contact suspension; the pulley block is disposed on both sides of the track assembly, and is capable of driving the contact suspension to move along the length of the track assembly.

[0007] In one possible implementation, a limiting element is also included; the limiting element is disposed on the support column and is configured to limit the rotation of the support assembly.

[0008] In one possible implementation, the track assembly includes a first mounting plate, a second mounting plate, a mounting post, a limiting post, and a sliding post; the first mounting plate is obliquely connected to the end of the support assembly away from the support post, and the second mounting plate is vertically connected to the first mounting plate; the mounting post is connected to the second mounting plate, and the end of the mounting post abuts against the first mounting plate; the limiting post is provided on both sides of the mounting post, the limiting post is connected to the second mounting plate, and the end of the limiting post abuts against the first mounting plate; the sliding post is connected to the side of the second mounting plate away from the mounting post, and the end of the sliding post abuts against the first mounting plate; the pulley group is slidably connected to the sliding post.

[0009] In one possible implementation, the pulley assembly includes a first roller, a deflecting wheel, a contact plate, and a plurality of second rollers; the contact plate is connected to the pulley frame; the first roller is rotatably connected to one side of the contact plate, and the deflecting wheel is connected to the other side of the contact plate, such that rotating the deflecting wheel can move the contact plate and the first roller along the length of the sliding post; the plurality of second rollers are symmetrically arranged relative to the first roller, and each of the plurality of second rollers is rotatably connected to the pulley frame; the sliding post is disposed on the first roller, and the first roller can slide on the sliding post; the plurality of second rollers respectively cooperate with the limiting post, and the plurality of second rollers can slide on the sliding post.

[0010] In one possible implementation, the track assembly further includes a first limiting plate and a second limiting plate; the first limiting plate is connected to a vertically connected second mounting plate and is configured to limit the pulley frame; the second limiting plate is disposed at the end of the first mounting plate away from the support assembly and is configured to prevent the positioning assembly from falling off the track assembly.

[0011] In one possible implementation, the connecting assembly includes a positioning clamp, an elastic element, a pin, and a sleeve; the sleeve is connected to the pulley frame, one end of the pin is engaged inside the sleeve, the other end of the pin is connected to the positioning clamp, and the positioning clamp is connected to the contact suspension; the elastic element is disposed inside the sleeve, one end of the elastic element abuts against the pin, and the other end of the elastic element abuts against the end face of the sleeve.

[0012] One or more technical solutions provided in this application have at least the following technical effects: This utility model embodiment employs a device that can change the length of the mobile contact wire support. Utilizing a track assembly and a sliding positioning assembly mounted on the support component, it achieves dynamic compensation for changes in the length of the contact suspension caused by temperature variations. This effectively solves the problem of inconsistent relocation distances and inaccurate reaching of loading and unloading positions caused by the thermal expansion and contraction of the contact suspension in existing mobile contact wire systems. Consequently, it enables the mobile contact wire to be accurately and equidistantly relocated or reset under different temperature conditions, ensuring the safety and reliability of cargo loading and unloading operations, while also ensuring the continuity and stability of power supply to electric locomotives. Furthermore, the automatic compensation for length deviations caused by temperature changes through a mechanical structure reduces manual intervention, improves the system's automation level and adaptability, and is particularly suitable for electrified railway lines with long anchor sections and large temperature differences. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the mobile overhead contact line at the operating position of the electric locomotive, provided in an embodiment of this application; Figure 2 A schematic diagram of the mobile contact network provided in this application embodiment at the cargo loading location; Figure 3 The t provided in the embodiments of this application x =t p A schematic diagram of the support components in the running position of the electric locomotive; Figure 4 The t provided in the embodiments of this application x >t p A schematic diagram of the support components in the running position of the electric locomotive; Figure 5 The t provided in the embodiments of this application x <t p A schematic diagram of the support components in the running position of the electric locomotive; Figure 6 The t provided in the embodiments of this application x >t p A schematic diagram showing the moving contact wire of the supporting components being moved to the loading and unloading position; Figure 7 The t provided in the embodiments of this application x <t p A schematic diagram showing the moving contact wire of the supporting components being moved to the loading and unloading position; Figure 8 An isometric view of a device for changing the length of a mobile contact wire support device, provided in an embodiment of this application; Figure 9 A front view of a device for changing the length of a mobile contact wire support device, provided in an embodiment of this application; Figure 10 for Figure 8 Enlarged view of point B; Figure 11 A force diagram of the positioning component provided in an embodiment of this application; Figure 12 A right view of the positioning component provided in an embodiment of this application; Figure 13 for Figure 12 A sectional view of AA; Figure 14 An isometric view of the track assembly provided in an embodiment of this application; Figure 15 A front view of the track assembly provided in an embodiment of this application; Figure 16 The t provided in the embodiments of this application x =t p A schematic diagram showing the location of the support components for the mobile overhead contact system during electric locomotive operation; Figure 17 The t provided in the embodiments of this application x =t p A schematic diagram of the mobile overhead contact line loading and unloading location; Figure 18 The t provided in the embodiments of this application x <t p A schematic diagram showing the location of the support components for the mobile overhead contact system during electric locomotive operation; Figure 19 The t provided in the embodiments of this application x <t p Schematic diagram of the first loading and unloading position of the mobile overhead contact line; Figure 20 The t provided in the embodiments of this application x <t p Schematic diagram of the second loading and unloading position of the mobile overhead contact line; Figure 21 The t provided in the embodiments of this application x >t p A schematic diagram showing the location of the support components for the mobile overhead contact system during electric locomotive operation; Figure 22 The t provided in the embodiments of this application x >t p Schematic diagram of the first loading and unloading position of the mobile overhead contact line; Figure 23 The t provided in the embodiments of this application x >t p A schematic diagram of the second loading and unloading position of the mobile overhead contact line.

[0015] Icons: 1-Support column; 2-Contact suspension; 3-Support assembly; 4-Rail assembly; 41-First mounting plate; 42-Second mounting plate; 43-Mounting column; 44-Limiting column; 45-Sliding column; 46-First limiting plate; 5-Positioning assembly; 51-Pulley block; 511-First roller; 512-Deflecting wheel; 513-Abutting plate; 514-Second roller; 52-Pulley frame; 53-Positioning rod; 54-Connecting assembly; 541-Positioning clamp; 542-Elastic element; 543-Pin; 544-Sleeve; 6-Limiting element; 7-Fixed base. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0018] The support device described in this application is applicable to catenary contact suspension or simple contact suspension. Catenary suspension includes a catenary cable and a contact wire; simple suspension includes a contact wire and a sling. The contact suspension 2 mentioned in this application is a "catenary contact suspension" or "simple contact suspension".

[0019] like Figures 1-3As shown, the highest temperature during the design of the overhead contact line is t. max The lowest temperature is t min Then the average temperature (temperature without offset) t p =(t max +t min ) / 2. Instantaneous temperature t at the scene. x =t p At that time, the contact wire support component 3 is perpendicular to the railway. For example... Figure 3 As shown, support column A represents the lower anchor column of the contact suspension 2, which is equipped with a power device to rotate the support assembly 3; support columns Z1 to Zn are the intermediate support columns 1 of the moving contact network, which are equipped with the support assembly 3 and support the contact suspension 2; support column B can be equipped with a weight, and the weight of the weight provides a constant tension for the contact suspension 2. The height of the weight from the ground also changes with the temperature.

[0020] Among them, the length change δ of the contact suspension line 2 x =L x ρ(t) x -t p In the formula: L x This represents the distance between support 1 and lower anchor A; ρ represents the coefficient of linear expansion of the contact suspension 2 wire; t x Indicates the actual temperature at the site; t p This indicates the average temperature.

[0021] like Figures 4-5 As shown, when t x >t p At that time, the support component 3 of the mobile contact network shifts δ in the direction of the weight. x Value; when t x <t p At that time, the support component 3 of the mobile contact network shifts towards the power side by -δ x Value, where δ x A negative value indicates that the clue is shortened.

[0022] like Figures 6-7 As shown, when t x >t p At this time, the mobile contact wire needs to be moved to the loading position. The specific operation is as follows: the power unit on column A pulls the contact suspension 2, and the support assembly 3 shifts towards column A. The distance between each intermediate column 1 is a. x The change in length of the contact suspension line 2 from support A is δ. x δ x =δ n -δ n-1 Then the length of the thread between each intermediate pillar 1 and supporting component 3 is a. x +δ xTherefore, the actual distance H that the clue was removed x The distance h is smaller than the theoretically expected distance H. x Therefore, the longer the anchor section of the mobile contact network, the closer the on-site temperature is to t. max h x The larger the value, the less likely the mobile contact network can be to move away from the line to the distance required for loading trucks, thus affecting truck loading and unloading operations.

[0023] Regardless of t x >t p When or t x <t p In practice, the actual relocation distance of the mobile contact network often differs from the theoretical relocation distance, and this deviation increases with the length of the anchor section. Therefore, the inventors have proposed a device and method to compensate for the actual relocation distance of the mobile contact network, thereby enabling the mobile contact network to move synchronously to the theoretically designed relocation distance, without being limited by the length of the anchor section.

[0024] This utility model embodiment provides a device that can change the length of a mobile contact wire support device, such as... Figures 8-23 As shown, it includes a support column 1, a contact suspension 2, a support assembly 3, a track assembly 4, and a positioning assembly 5; one end of the support column 1 is connected to the ground, and the other end of the support column 1 is rotatably connected to one end of the support assembly 3; the track assembly 4 is inclinedly connected to the other end of the support assembly 3; the positioning assembly 5 is slidably connected to the track assembly 4 and is connected to the contact suspension 2; when the length of the contact suspension 2 changes, the length of the support assembly 3 is compensated by the movement of the positioning assembly 5 on the track assembly 4.

[0025] In the embodiments of this application, such as Figures 8-23 As shown, the positioning assembly 5 includes a pulley block 51, a pulley frame 52, a positioning rod 53, and a connecting assembly 54; the pulley block 51 is rotatably connected to the pulley frame 52; the positioning rod 53 is connected to one side of the pulley frame 52, and the connecting assembly 54 is connected to the other side of the pulley frame 52; the positioning rod 53 is connected to one end of the contact suspension 2, and the connecting assembly 54 is connected to the other end of the contact suspension 2; the pulley block 51 is disposed on both sides of the track assembly 4, and it can drive the contact suspension 2 to move in the length direction of the track assembly 4.

[0026] In the embodiments of this application, such as Figures 8-23 As shown, it also includes a fixed base 7; the support assembly 3 is rotatably connected to the support column 1 via the fixed base 7.

[0027] In the embodiments of this application, such as Figures 8-23 As shown, it also includes a limiting member 6; the limiting member 6 is disposed on the support column 1 and is configured to limit the rotation of the support assembly 3.

[0028] In the embodiments of this application, such as Figures 8-23 As shown, the track assembly 4 includes a first mounting plate 41, a second mounting plate 42, a mounting post 43, a limiting post 44, and a sliding post 45. The first mounting plate 41 is obliquely connected to the end of the support assembly 3 away from the support column 1, and the second mounting plate 42 is vertically connected to the first mounting plate 41. The mounting post 43 is connected to the second mounting plate 42, and the end of the mounting post 43 abuts against the first mounting plate 41. Limiting posts 44 are provided on both sides of the mounting post 43, and the limiting posts 44 are connected to the second mounting plate 42, and the end of the limiting posts 44 abuts against the first mounting plate 41. The sliding post 45 is connected to the side of the second mounting plate 42 away from the mounting post 43, and the end of the sliding post 45 abuts against the first mounting plate 41. The pulley group 51 is slidably connected to the sliding post 45.

[0029] In the embodiments of this application, such as Figures 8-23 As shown, the pulley block 51 includes a first roller 511, a deflecting wheel 512, a contact plate 513, and a plurality of second rollers 514. The contact plate 513 is connected to the pulley frame 52. The first roller 511 is rotatably connected to one side of the contact plate 513, and the deflecting wheel 512 is connected to the other side of the contact plate 513. By rotating the deflecting wheel 512, the contact plate 513 and the first roller 511 can be moved along the length of the sliding post 45. The plurality of second rollers 514 are symmetrically arranged with respect to the first roller 511, and the plurality of second rollers 514 are rotatably connected to the pulley frame 52. The sliding post 45 is disposed on the first roller 511, and the first roller 511 can slide on the sliding post 45. The plurality of second rollers 514 respectively cooperate with the limiting post 44, and the plurality of second rollers 514 can slide on the sliding post 45.

[0030] For example, the deflection wheel 512 is provided with a waist hole, which has an arc-shaped structure and can convert rotational motion into specific linear or oscillating motion. The deflection wheel 512 and the abutment plate 513 are connected through the waist hole. By rotating the deflection wheel 512, the abutment plate 513 is driven to move on the sliding column 45. This structure can adjust the distance between the pulley group 51 and the end of the track assembly 4.

[0031] In the embodiments of this application, such as Figures 8-23 As shown, the track assembly 4 also includes a first limiting plate 46 and a second limiting plate; the first limiting plate 46 is connected to the second mounting plate 42 vertically and is configured to limit the pulley frame 52; the second limiting plate is disposed at the end of the first mounting plate 41 away from the support assembly 3 and is configured to prevent the positioning assembly 5 from falling off the track assembly 4.

[0032] In the embodiments of this application, such as Figures 8-23As shown, the connecting assembly 54 includes a positioning clamp 541, an elastic element 542, a pin 543, and a sleeve 544; the sleeve 544 is connected to the pulley frame 52, one end of the pin 543 is engaged inside the sleeve 544, and the other end of the pin 543 is connected to the positioning clamp 541, which is connected to the contact suspension 2; the elastic element 542 is disposed inside the sleeve 544, one end of the elastic element 542 abuts against the pin 543, and the other end of the elastic element 542 abuts against the end face of the sleeve 544.

[0033] This utility model embodiment provides a method for changing the length of a mobile contact wire support device, such as... Figures 8-23 As shown, a device suitable for changing the length of a mobile overhead contact line support includes the following steps: When the contact suspension 2 experiences a length change δ due to temperature variation... x When the positioning component 5 slides on the track component 4, the effective length of the support component 3 is compensated; when the mobile contact network moves away from or returns from the working position, the contact suspension 2 is pulled by the winch to move towards or away from the winch, thereby driving the support component 3 to rotate around the support column 1 and causing the positioning component 5 to slide on the track component 4, thereby realizing the equidistant movement of the contact suspension 2.

[0034] For example, when the contact suspension 2 changes length δ due to temperature change x During this process, the positioning component 5 slides along the track component 4 to ensure that the effective length of the support component 3 is properly compensated. Simultaneously, when the contact wire moves to the working position or returns, the winch pulls the contact suspension 2, causing the support component 3 to rotate around the support column 1. This maintains the quadrilateral formed by the support component 3 and the contact suspension 2 between adjacent support columns in a state of approximately parallelogram, thereby achieving equidistant movement of the contact suspension 2. This design ensures that the relationship between the support component 3 and the contact suspension 2 remains stable at all times.

[0035] In the embodiments of this application, such as Figures 8-23 As shown, the sliding distance of the positioning component 5 on the track component 4 is equal to the change in length δ of the contact suspension 2 caused by the temperature change. x When the temperature is lower than the reference temperature, the contact suspension 2 shortens by δ. x The sliding distance δ of positioning component 5 towards support column 1 x To increase the effective length of support component 3; when the temperature is higher than the reference temperature, the contact suspension 2 elongates by δ x The sliding distance δ of positioning component 5 towards the railway side x This reduces the effective length of support component 3.

[0036] For example, the contact suspension 2 is moved closer to the winch by a winch, causing the support assembly 3 to rotate around the support column 1; when the length of the contact suspension 2 changes due to temperature changes, the length change of the contact suspension 2 is compensated by the sliding amount of the positioning assembly 5 on the track, so that the actual length from the support column 1 to the positioning assembly 5 adapts to the length change of the contact suspension 2; when the positioning assembly 5 slides to the predetermined position, the moving distance of the contact suspension 2 reaches the theoretical moving distance.

[0037] For example, it also includes the following step: limiting the rotation angle of the support assembly 3 by means of the first limiting member 6 set on the support column 1; For example, the longitudinal movement of the contact suspension 2 by the winch includes: when it is necessary to remove the contact suspension 2, the winch retracts, pulling the contact suspension 2 toward the power-side support column 1, thereby causing the support assembly 3 to rotate toward the power side; when it is necessary to restore the contact suspension 2, the winch releases, using the gravity of the weight to pull the contact suspension 2 toward the weight-side support column 1, thereby causing the support assembly 3 to rotate toward the weight side.

[0038] For example, it also includes the following steps: during the sliding process of the positioning component 5, the friction between the positioning component 5 and the track is reduced by the pulley group 51 to make the sliding smoother.

[0039] For example, the positioning component 5 is connected to the contact suspension 2 via the connecting component 54, providing cushioning and maintaining connection stability during sliding.

[0040] For example, such as Figure 9 As shown, when the support assembly 3 is in the running position of the electric locomotive, the distance between the positioning assembly 5 and the fixed base 7 is L. A track assembly 4 is provided at the end of the support assembly 3 furthest from the support column 1. The positioning assembly 5 slides on the track assembly 4 via a pulley system 51, with a sliding distance of δ. x At this time, the distance between the positioning component 5 and the fixed base 7 is L+δ. x This is equivalent to an increase of δ in the length of support component 3. x This means that the length of the mobile contact wire support component 3 has been changed. The track component 4 has an upward tilt angle α in the horizontal direction. When the support component 3 returns to the running position of the electric locomotive, the positioning component 5 is subjected to a horizontal component force G generated by the contact suspension 2 and the weight G of the positioning component 5 itself. S Under its influence, the positioning component 5 can return to the starting position along the track component 4, that is, the position where the length of the support component 3 is L.

[0041] For example, such as Figure 11 As shown in the figure, α is the upward tilt angle of the track assembly 4 in the horizontal plane, and G is the weight of the positioning device 3 and the weight of the contact suspension 2. Mechanical analysis shows that G... s =G / tgα.

[0042] For example, such as Figures 16-23 As shown, in actual operation, the mobile contact network includes multiple supports 1. Support A is on the power side, therefore the support assembly 3 of support Z1 is always perpendicular to the railway. When the mobile contact network needs to be loaded with cargo, a winch is used to retract it, pulling the contact suspension 2 longitudinally towards support A, causing the weight of support B on the weight side to rise. The support assembly 3 of supports Z1-Zx rotates with the contact suspension 2 towards the power side, thereby achieving the purpose of the contact suspension 2 of the mobile contact network moving laterally towards support 1, that is, moving away from directly above the railway, thus meeting the requirements for loading cargo for trains. When the mobile contact network needs the electric locomotive to operate normally, the winch is released, and the weight of the weight of support B on the weight side pulls the contact suspension 2 longitudinally towards support B. At this time, the weight of support B on the weight side falls, and the support assembly 3 of supports Z1-Zx rotates with the contact suspension 2 towards the weight side, achieving the purpose of the contact suspension 2 of the mobile contact network moving laterally towards the railway, that is, reaching directly above the railway, thus meeting the requirements for the normal operation of electric locomotives.

[0043] For example, when t x =t p At that time, the support components 3 of the supports Z1-Zx are perpendicular to the railway, and the spacing L of the supports Z1-Zx is... x The distance a between the support component 3 of the support column Z1-Zx and the positioning point x Equal, i.e., L x =a x When the winch on side A of the support retracts, the mobile contact wire moves to the cargo loading / unloading position, and the actual moving distance of the mobile contact wire is equal to the theoretical moving distance.

[0044] For example, such as Figures 16-23 As shown, when t x <t p At this time, the support column Z1 is at the fixed end, and the offset of its support component 3 is not affected by temperature changes, remaining essentially perpendicular to the railway. The support component 3 of the support column Zx shortens by δ due to the contact suspension 2. x Therefore, a≤L x L x =a x +δ x When the winch on side A of the support column retracts, the movable contact suspension 2 moves to the cargo loading / unloading position. At this time, the support component 3 at point Zx of the support column is tilted by δ. xTherefore, the movable contact suspension 2 moves to the loading / unloading position in advance, while the movable contact suspension 2 at the support column Z1 has not reached the loading / unloading position. At this time, the actual moving distance of the contact suspension 2 has not reached the theoretical moving distance. When the support component 3 of the support column Zx rotates to the theoretical moving distance of the contact suspension 2, the limiting action of the support component 3 and the limiting component 6 prevents the contact suspension 2 on the support column Zx from rotating. At this time, since the support component 3 of the support column Z1 has not reached the theoretical moving distance of the contact suspension 2, the winch continues to retract, pulling the positioning component 5 of the support component 3 of the support column Zx, causing it to slide horizontally a distance δ on the track of the support component 3. x , when a x +δ x =L x At this point, the support component 3 of the support column Z1 rotates to the theoretical travel distance of the contact suspension 2, at which point the winch stops retracting. The actual travel distance of the contact suspension 2 reaches its theoretical travel distance through the movement of the positioning component 5 on the track component 4.

[0045] For example, such as Figures 16-23 As shown, when t x >t p At this time, the support column Z1 is at the fixed end, and the offset of its support component 3 is not affected by temperature changes, remaining essentially perpendicular to the railway. Due to the extension δ of the contact suspension 2... x Therefore, the support component 3 of the support column Zx deflects, at which point a x >L x L x =a x -δ x When the winch on side A of the support column retracts, the contact suspension 2 moves to the loading / unloading position. At this time, the support component 3 of the support column Z1 moves to the loading / unloading position in advance. The support component 3 at the support column Zx is tilted δ towards the weight side. x Therefore, the mobile contact suspension 2 has not yet reached the loading / unloading position, and the actual moving distance of the mobile contact network has not reached the theoretical moving distance. When the support component 3 of the support column Z1 rotates to the theoretical moving distance of the contact suspension 2, the limiting action of the support component 3 and the limiting component 6 prevents the contact suspension 2 on the support column Z1 from rotating. At this time, since the support component 3 of the support column Zx has not reached the theoretical moving distance of the contact suspension 2, the winch continues to retract, pulling the positioning component 5 of the support component 3 on the support column Z1, causing it to slide horizontally a distance δ on the track component 4. x , when a x +δ x =L x At this point, the support component 3 of the support column Zx rotates to the theoretical moving distance of the movable contact suspension 2, and the winch stops retracting. The actual moving distance of the contact suspension 2 reaches its theoretical moving distance through the movement of the positioning component 5 on the track component 4.

[0046] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0047] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A device for changing the length of a mobile overhead contact line support, the support being suitable for chain suspension or simple suspension, characterized in that, It includes a support column (1), a contact suspension (2), a support assembly (3), a track assembly (4), a positioning assembly (5), and a fixed base (7); One end of the support column (1) is connected to the ground, and the other end of the support column (1) is rotatably connected to one end of the support assembly (3) through the fixed base (7); The track assembly (4) is inclinedly connected to the other end of the support assembly (3); The positioning component (5) is slidably connected to the track component (4), and the positioning component (5) is connected to the contact suspension (2); When the length of the contact suspension (2) changes, the length of the support component (3) is compensated by the movement of the positioning component (5) on the track component (4).

2. The device for varying the length of the support of the mobile catenary according to claim 1, characterized in that, The positioning component (5) includes a pulley block (51), a pulley frame (52), a positioning rod (53), and a connecting component (54). The pulley block (51) is rotatably connected to the pulley frame (52); The positioning rod (53) is connected to one side of the pulley frame (52), and the connecting assembly (54) is connected to the other side of the pulley frame (52). The positioning rod (53) is connected to one end of the contact suspension (2), and the connecting assembly (54) is connected to the other end of the contact suspension (2); The pulley block (51) is located on both sides of the track assembly (4), and it can drive the contact suspension (2) [1] to move along the length of the track assembly (4).

3. The device for varying the length of the support of the mobile catenary according to claim 1, characterized in that, It also includes a limiting component (6); The limiting member (6) is disposed on the support column (1) and is configured to limit the rotation of the support assembly (3).

4. The device for varying the length of the support of the mobile catenary according to claim 2, characterized in that, The track assembly (4) includes a first mounting plate (41), a second mounting plate (42), a mounting post (43), a limiting post (44), and a sliding post (45). The first mounting plate (41) is obliquely connected to the end of the support assembly (3) away from the pillar (1), and the second mounting plate (42) is vertically connected to the first mounting plate (41). The mounting post (43) is connected to the second mounting plate (42), and the end of the mounting post (43) abuts against the first mounting plate (41); The mounting post (43) is provided with limiting posts (44) on both sides. The limiting posts (44) are connected to the second mounting plate (42), and the ends of the limiting posts (44) abut against the first mounting plate (41). The sliding post (45) is connected to the side of the second mounting plate (42) away from the mounting post (43), and the end of the sliding post (45) abuts against the first mounting plate (41); The pulley block (51) is slidably connected to the sliding column (45).

5. A device for varying the length of a mobile catenary support device according to claim 4, characterized in that, The pulley assembly (51) includes a first roller (511), a deflector (512), a contact plate (513), and a plurality of second rollers (514). The abutment plate (513) is connected to the pulley frame (52); The first roller (511) is rotatably connected to one side of the abutment plate (513), and the deflection wheel (512) is connected to the other side of the abutment plate (513). By rotating the deflection wheel (512), the abutment plate (513) and the first roller (511) can be driven to move in the length direction of the sliding column (45). A plurality of second rollers (514) are symmetrically arranged relative to the first roller (511), and the plurality of second rollers (514) are rotatably connected to the pulley frame (52); The sliding post (45) is disposed on the first roller (511), and the first roller (511) is capable of sliding on the sliding post (45); The plurality of second rollers (514) respectively cooperate with the limiting post (44), and the plurality of second rollers (514) can slide on the sliding post (45).

6. The device for varying the length of the support of the mobile catenary according to claim 4, characterized in that, The track assembly (4) also includes a first limiting plate (46) and a second limiting plate; The first limiting plate (46) is connected to the second mounting plate (42) which is vertically connected to it, and is configured to limit the pulley frame (52); The second limiting plate is disposed at one end of the first mounting plate (41) away from the support assembly (3), and is configured to prevent the positioning assembly (5) from falling off the track assembly (4).

7. The device for varying the length of the support of the mobile catenary according to claim 2, characterized in that, The connecting assembly (54) includes a positioning clamp (541), an elastic element (542), a pin (543), and a sleeve (544). The sleeve (544) is connected to the pulley frame (52), one end of the pin (543) is engaged inside the sleeve (544), the other end of the pin (543) is connected to the positioning clamp (541), and the positioning clamp (541) is connected to the contact suspension (2). The elastic element (542) is disposed inside the sleeve (544), one end of the elastic element (542) abuts against the pin (543), and the other end of the elastic element (542) abuts against the end face of the sleeve (544).

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