An anchoring compensation device for a mobile overhead contact line
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-08-14
AI Technical Summary
[0004]本申请实施例通过提供一种移动接触网的下锚补偿装置，解决了现有技术中移动接触网补偿装置中存在的坠砣有效移动空间不足与需要增加坠砣重量之间的矛盾问题，并且还克服因坠砣双排设置而导致的坠砣系统稳定性差和维护成本高的缺陷
本实用新型实施例通过采用了一种移动接触网的下锚补偿装置，包括下锚支柱、滑轮组件、钢丝绳和坠砣；下锚支柱的一端连接于地面，下锚支柱的另一端与滑轮组件连接；滑轮组件的第一端连接于下锚支柱的一侧，滑轮组件的另一端连接于下锚支柱的另一侧；钢丝绳的一端与接触悬挂连接，钢丝绳的另一端绕过滑轮组件并与坠砣连接，坠砣与接触悬挂分别处于下锚支柱的两侧。本申请通过滑轮组件满足移动接触网的接触悬挂顺线路方向的移动，在不增加坠砣重量的前提下，通过增加下锚支柱的高度能够增加坠砣的有效移动距离。本申请不需要设置特殊的补偿滑轮，只使用通用的滑轮即可满足移动接触网的接触悬挂顺线路方向的移动距离的要求。本申请解决了现有技术中移动接触网补偿装置中存在的坠砣有效移动空间不足与需要增加坠砣重量之间的矛盾问题，并且还克服因坠砣双排设置而导致的坠砣系统稳定性差和维护成本高的缺陷。通过滑轮组的行程倍增效应，在坠砣重量等于接触网张力的前提下，显著增加了坠砣的有效补偿行程。坠砣重量减轻，即可采用单排布置，其大大降低了风摆幅度，使整个下锚装置运行更稳定和安全，同时也降低了维护成本。
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Figure CN224631593U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of mobile overhead contact line technology, and more particularly to a lower anchor compensation device for mobile overhead contact lines. Background Technology
[0002] Due to the unique structure of mobile overhead contact line devices used on electrified railway loading and unloading lines, the movement distance of their contact suspension along the track direction needs to be greater than that of conventional contact suspensions. This special requirement means that the effective space of the weights in conventional overhead contact line compensation devices cannot meet the requirements of mobile overhead contact lines.
[0003] In existing technologies, two pulleys of different diameters are typically fixed coaxially. This design limits the vertical movement of the weight to only one-third of the distance the contact suspension travels, while requiring the weight of the weight to be three times the tension of the contact suspension. To address the space constraints caused by the increased weight, a double-row weight configuration has been adopted in practice. However, the double-row configuration increases the difficulty of controlling the weight's sway in the wind, making it prone to swaying under wind loads and affecting system stability. Furthermore, with the weight of the weight tripling, routine maintenance tools become insufficient, requiring specialized tools and increasing the difficulty and cost of daily inspection and maintenance. Utility Model Content
[0004] This application provides an anchoring compensation device for a mobile contact network, which solves the contradiction between insufficient effective movement space for the weights and the need to increase the weight of the weights in existing mobile contact network compensation devices. It also overcomes the defects of poor stability and high maintenance cost of the weight system caused by the double-row setting of the weights.
[0005] This utility model embodiment provides a lower anchor compensation device for a mobile contact network, including a lower anchor post, a pulley assembly, a steel wire rope, and a weight; one end of the lower anchor post is connected to the ground, and the other end of the lower anchor post is connected to the pulley assembly; a first end of the pulley assembly is connected to one side of the lower anchor post, and the other end of the pulley assembly is connected to the other side of the lower anchor post; one end of the steel wire rope is connected to the contact suspension, and the other end of the steel wire rope passes around the pulley assembly and is connected to the weight, with the weight and the contact suspension located on opposite sides of the lower anchor post.
[0006] In one possible implementation, the pulley assembly includes a first pulley, a second pulley, and a third pulley; the fixed end of the first pulley is connected to the side of the lower anchor post near the contact suspension. The fixed ends of the second pulley and the third pulley are both connected to the top of the lower anchor support, and the second pulley and the third pulley are respectively located on both sides of the lower anchor support; one end of the wire rope is connected to the contact suspension, and the other end of the wire rope passes around the first pulley, the second pulley and the third pulley in sequence and is connected to the weight.
[0007] In one possible implementation, the pulley assembly further includes a first fixed base; the fixed end of the first pulley is connected to the side of the lower anchor post near the contact suspension via the first fixed base.
[0008] In one possible implementation, the pulley assembly further includes a second fixed base; the second fixed base is vertically connected to the top of the lower anchor post; the second pulley and the third pulley are respectively rotatably connected to the two ends of the second fixed base.
[0009] In one possible implementation, the first pulley, the second pulley, and the third pulley are all provided with anti-detachment devices, which are configured to prevent the wire rope from coming off the pulley.
[0010] One or more technical solutions provided in this application have at least the following technical effects: This utility model embodiment employs a lowering compensation device for a mobile contact network, including a lowering anchor post, a pulley assembly, a steel wire rope, and a weight. One end of the lowering anchor post is connected to the ground, and the other end is connected to the pulley assembly. A first end of the pulley assembly is connected to one side of the lowering anchor post, and the other end is connected to the other side of the lowering anchor post. One end of the steel wire rope is connected to the contact suspension, and the other end passes around the pulley assembly and connects to the weight. The weight and the contact suspension are located on opposite sides of the lowering anchor post. This application uses the pulley assembly to allow the contact suspension of the mobile contact network to move along the track direction. Without increasing the weight of the weight, the effective movement distance of the weight can be increased by increasing the height of the lowering anchor post. This application does not require special compensation pulleys; only general-purpose pulleys are needed to meet the movement distance requirements of the contact suspension of the mobile contact network along the track direction. This application resolves the contradiction between insufficient effective movement space for the weights and the need to increase their weight in existing mobile contact network compensation devices. It also overcomes the shortcomings of poor stability and high maintenance costs caused by double-row weight configurations. Through the stroke multiplication effect of the pulley system, the effective compensation stroke of the weights is significantly increased while maintaining the weight of the weight equal to the contact network tension. The reduced weight allows for a single-row arrangement, greatly reducing wind sway and making the entire anchoring device more stable and safer, while also lowering maintenance costs. Attached Figure Description
[0011] 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 utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 A schematic diagram of a conventional overhead contact line compensation device provided in the embodiments of this application; Figure 2 An isometric view of a mobile contact wire anchoring compensation device provided in an embodiment of this application; Figure 3 This is a front view of a mobile overhead contact line anchoring compensation device provided in an embodiment of this application.
[0013] Icons: 1-Anchor support; 2-Pulley assembly; 21-First pulley; 22-Second pulley; 23-Third pulley; 24-First fixed base; 25-Second fixed base; 26-Anti-fall-off device; 3-Wire rope; 4-Weight; 5-Large wheel; 6-Small wheel. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.
[0015] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.
[0016] like Figure 1 As shown, the compensating pulley uses two pulleys of different diameters fixed on the same axis for switching. The diameter of the large pulley 5 is D, and the diameter of the small pulley 6 is d, so D=3d. Thus, the distance the weight 4 moves up and down is only a fraction of the distance the contact suspension moves. If F is the tension of the contact suspension and G is the weight of the weight 4, then G=3F. That is, the weight of the weight 4 is three times the tension of the contact suspension, and the increased weight of the weight 4 also accounts for the effective distance of its movement. To solve this problem, the weight 4 is arranged in a double row. However, the double-row arrangement of the weight 4 increases the difficulty of limiting its swaying in the wind, making it prone to swaying under wind load, affecting system stability. Furthermore, with the weight of the weight 4 tripling, routine maintenance tools are insufficient, requiring specialized tools, increasing the difficulty and cost of daily inspection and maintenance.
[0017] This utility model embodiment provides a lower anchor compensation device for a mobile contact network, such as... Figure 2 and Figure 3 As shown, the system includes a lower anchor post 1, a pulley assembly 2, a steel wire rope 3, and a weight 4. One end of the lower anchor post 1 is connected to the ground, and the other end of the lower anchor post 1 is connected to the pulley assembly 2. The first end of the pulley assembly 2 is connected to one side of the lower anchor post 1, and the other end of the pulley assembly 2 is connected to the other side of the lower anchor post 1. One end of the steel wire rope 3 is connected to the contact suspension, and the other end of the steel wire rope 3 passes around the pulley assembly 2 and is connected to the weight 4. The weight 4 and the contact suspension are located on opposite sides of the lower anchor post 1.
[0018] For example, this application can increase the effective movement distance of the weight 4 by increasing the height of the lower anchor post 1 without increasing the weight of the weight 4. No special compensating pulleys are required; general-purpose pulleys are sufficient to meet the movement distance requirements of the contact suspension along the track direction of the mobile contact network.
[0019] In the embodiments of this application, such as Figure 2 and Figure 3 As shown, the pulley assembly 2 includes a first pulley 21, a second pulley 22, and a third pulley 23; the fixed end of the first pulley 21 is connected to the side of the lower anchor post 1 near the contact suspension; the fixed ends of the second pulley 22 and the third pulley 23 are both connected to the top of the lower anchor post 1, and the second pulley 22 and the third pulley 23 are respectively located on both sides of the lower anchor post 1; one end of the wire rope 3 is connected to the contact suspension, and the other end of the wire rope 3 passes through the first pulley 21, the second pulley 22, and the third pulley 23 in sequence and is connected to the weight 4.
[0020] For example, this application increases the effective movement distance of the weight 4 by increasing the height of the lower anchor post 1 and adding pulleys without increasing the weight of the weight 4. This successfully transforms and optimizes the common engineering problem of the conflict between force and distance. It trades the simple, one-time structural cost of a taller column for multiple significant advantages, including eliminating the bulky double weight 4, complex special pulleys, and high maintenance costs.
[0021] For example, the first pulley 21 is located near the contact suspension side and can change the direction of the force. This pulley is a fixed pulley. Its primary function is to receive the tension from the moving contact suspension and to change the direction of the tension from the moving contact suspension to a vertical direction, guiding this tension to the second pulley 22 and the third pulley 23 located at the top of the support column. The second pulley 22 and the third pulley 23 are located on both sides of the crossarm at the top of the support column, forming a movable pulley group that can achieve stroke multiplication and force balance. Although the second pulley 22 and the third pulley 23 are both fixedly installed on the lower anchor column 1, they are functionally equivalent to a movable pulley in the system through a specific winding method of the wire rope 3. The second pulley 22 is responsible for changing the direction of the wire rope 3 again, and the third pulley 23 ultimately guides the wire rope 3 to the weight 4. The combination of the second pulley 22 and the third pulley 23 can achieve a stroke multiplication effect.
[0022] For example, the second pulley 22 and the third pulley 23 are symmetrically arranged on both sides of the lower anchor support 1, thereby ensuring that the force of the wire rope 3 acting on the top of the support is balanced and avoiding the generation of a huge unbalanced bending moment in the lower anchor support 1.
[0023] For example, when the contact suspension moves a distance L, a steel cable 3 of length L is released from the pulley system accordingly. This released steel cable 3 needs to be absorbed by the downward pull of the weight at the end of the weight 4. Since the steel cable 3 is continuously wound around the second and third pulleys 23, the weight 4 must descend a sufficient distance to provide enough space for the steel cable 3 to pass over the third pulley 23 from above. Therefore, the moving distance H of the weight 4 is twice the moving distance L of the contact suspension, i.e., H = 2L. This winding method achieves the compensation of the relatively short horizontal moving distance of the contact suspension with the longer vertical moving distance of the weight 4, thereby solving the problem of insufficient compensation stroke without increasing the weight of the weight 4.
[0024] In the embodiments of this application, such as Figure 2 and Figure 3 As shown, the pulley assembly 2 also includes a first fixed base 24; the fixed end of the first pulley 21 is connected to the side of the lower anchor column 1 near the contact suspension via the first fixed base 24.
[0025] In the embodiments of this application, such as Figure 2 and Figure 3As shown, the pulley assembly 2 also includes a second fixed base 25; the second fixed base 25 is vertically connected to the top of the lower anchor column 1; the second pulley 22 and the third pulley 23 are respectively rotatably connected to the two ends of the second fixed base 25.
[0026] In the embodiments of this application, such as Figure 2 and Figure 3 As shown, the first pulley 21, the second pulley 22 and the third pulley 23 are all equipped with anti-detachment devices 26, which are configured to prevent the wire rope 3 from coming off the pulley.
[0027] For example, pulleys 1, 2, and 3 are each equipped with an anti-detachment device 26 to prevent the wire rope 3 from coming off the pulley during construction or maintenance.
[0028] For example, this application resolves the contradiction between insufficient compensation stroke and excessive weight of the weight 4. Specifically, the traditional large and small pulley 6 scheme requires increasing the weight of the weight 4 to achieve a 3-fold stroke difference, resulting in a bulky weight 4. This application, however, utilizes the stroke multiplication effect of the pulley system, i.e., H=2L / 3L, to significantly increase the effective compensation stroke of the weight 4 while maintaining the weight of the weight 4 equal to the contact wire tension. This application also addresses the stability problem caused by double-row weights. The traditional scheme requires a heavy weight 4 in a double-row arrangement, making it susceptible to wind sway and resulting in poor system stability. The weight 4 in this application is lighter, allowing for a single-row arrangement, which greatly reduces wind sway amplitude, making the entire anchoring device more stable and safer. The weight of the weight 4 returns to a normal level, enabling operation with conventional maintenance tools and reducing maintenance costs. Furthermore, the traditional scheme relies on non-standard large and small pulley 6 composite pulleys, which have high manufacturing, procurement, and replacement costs. This application uses standard-specification universal pulleys, which are easy to procure, manufacture, and replace, thus reducing costs. Furthermore, this application places the weight 4 on the other side of the support, which forms a balanced torque system with the contact wire tension, so that the lower anchor support 1 mainly bears pressure rather than huge bending moment, making its structural design more reasonable and safer.
[0029] For example, this application provides a solution to the common engineering problem of the contradiction between force and distance through an ingenious system composed of three universal pulleys, applying classic mechanical principles. This application uses a simple and one-time structural cost—a taller column—to eliminate the bulky double-weighted rollers and complex special pulleys, ultimately achieving a more stable, economical, safe, and easy-to-maintain superior solution. It is a typical embodiment of the engineering concept of "overcoming force with ingenuity."
[0030] 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.
[0031] 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 mobile catenary lower anchor compensation device, characterized in that, Includes anchor support (1), pulley assembly (2), wire rope (3) and weight (4); One end of the lower anchor post (1) is connected to the ground, and the other end of the lower anchor post (1) is connected to the pulley assembly (2); The first end of the pulley assembly (2) is connected to one side of the lower anchor post (1), and the other end of the pulley assembly (2) is connected to the other side of the lower anchor post (1). One end of the wire rope (3) is connected to the contact suspension, and the other end of the wire rope (3) passes around the pulley assembly (2) and is connected to the weight (4). The weight (4) and the contact suspension are located on both sides of the lower anchor support (1).
2. The mobile catenary lower anchor compensation device according to claim 1, characterized in that, The pulley assembly (2) includes a first pulley (21), a second pulley (22) and a third pulley (23); The fixed end of the first pulley (21) is connected to the side of the lower anchor post (1) near the contact suspension; The fixed end of the second pulley (22) and the fixed end of the third pulley (23) are both connected to the top of the lower anchor post (1), and the second pulley (22) and the third pulley (23) are respectively located on both sides of the lower anchor post (1); One end of the wire rope (3) is connected to the contact suspension, and the other end of the wire rope (3) passes through the first pulley (21), the second pulley (22) and the third pulley (23) in sequence and is connected to the weight (4).
3. The mobile catenary lower anchor compensation device according to claim 2, characterized in that, The pulley assembly (2) also includes a first fixed base (24); The fixed end of the first pulley (21) is connected to the side of the lower anchor post (1) near the contact suspension via the first fixed base (24).
4. The mobile catenary lower anchor compensation device according to claim 2, characterized in that, The pulley assembly (2) also includes a second fixed base (25); The second fixed base (25) is vertically connected to the top of the lower anchor post (1); The second pulley (22) and the third pulley (23) are rotatably connected to both ends of the second fixed base (25).
5. The mobile catenary lower anchor compensation device according to claim 2, characterized in that, The first pulley (21), the second pulley (22) and the third pulley (23) are all provided with an anti-detachment device (26), which is configured to prevent the wire rope (3) from coming off the pulley.