An adaptive adjustment device for contact wire tension

Abstract

This utility model discloses an adaptive tension adjustment device for overhead contact line wires, belonging to the technical field of electrified railway supporting facilities. It includes: an overhead contact line weight assembly and a tension adjustment assembly; the overhead contact line weight assembly includes: a weight suspension cable, the upper end of which is connected to the end of the overhead contact line wire; a weight base, connected to the lower end of the weight suspension cable; several weights, stacked along the direction of the weight suspension cable on top of the weight base; and a counterweight water tank, positioned above the weights and connected to the tension adjustment assembly. The tension adjustment assembly adjusts the total weight of the overhead contact line weight assembly by changing the water volume in the counterweight water tank. This application, by setting the overhead contact line weight assembly and the tension adjustment assembly in cooperation, and by changing the water volume in the counterweight water tank, adjusts the tension of the overhead contact line wire, achieving a refined control effect.

Description

Technical Field

[0001] This utility model relates to the technical field of electrified railway supporting facilities, and more specifically, to an adaptive adjustment device for catenary wire tension. Background Technology

[0002] The overhead contact line, consisting of the contact wire and the catenary wire, is a core power supply component of electrified railway systems such as high-speed rail. It is erected along the railway line and provides continuous power to electric locomotives through the pantograph. The overhead contact line is affected by temperature changes and will expand and contract, becoming too tight or too loose. This can cause arcing or scraping of the contact line when the locomotive pantograph slides over it, affecting the safe operation of the train.

[0003] The overhead contact line weights are attached to both ends of the overhead contact line via pulleys. Their main function is to use gravity to balance and adjust the tension of the overhead contact line, ensuring that the tension meets safety standards and guaranteeing stable current collection by the train's pantograph.

[0004] Existing overhead contact lines are typically equipped with iron weights, reinforced concrete weights, or composite weights. These types of overhead contact line weights rely heavily on regular measurements and inspections by railway overhead contact line workers. Workers must manually adjust the number of weights on-site based on the condition of the overhead contact line, controlling the weights' rise or fall to regulate the tension and maintain normal slack, thus improving the quality of overhead contact line operation. Furthermore, the disassembly and assembly of heavy weights is complex and requires a high level of skill from operators, indirectly causing significant inconvenience to overhead contact line maintenance and construction. Utility Model Content

[0005] The purpose of this invention is to solve the technical problems of complex adjustment process and low adjustment accuracy of existing catenary weight adjustment, and to propose an adaptive adjustment device for catenary wire tension.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An adaptive tension adjustment device for overhead contact line includes: an overhead contact line weight assembly and a tension adjustment assembly; the tension adjustment assembly is connected to the overhead contact line weight assembly.

[0008] The contact wire weight assembly includes:

[0009] The upper end of the weight-hanging cable is connected to the steel cable of the contact wire ratchet compensation device;

[0010] The weight base is connected to the lower end of the weight hanging rope;

[0011] Several weights are stacked on top of the weight base along the direction of the weight hanging rope;

[0012] A counterweight water tank is disposed above the weight and connected to the tension adjustment assembly. The tension adjustment assembly adjusts the total weight of the contact wire weight assembly by changing the amount of water stored in the counterweight water tank.

[0013] Furthermore, the counterweight water tank is cylindrical, and the shape and size of its cross-section match the cross-section of the weight; the top of the side wall of the counterweight water tank is provided with a water outlet; and the bottom of the side wall of the counterweight water tank is provided with a return flow interface.

[0014] Furthermore, the tension adjustment assembly includes:

[0015] A water storage tank, wherein the top of the tank body is provided with a water inlet; the bottom of the side wall of the water storage tank is provided with a water outlet; and the top of the side wall of the water storage tank is provided with a return outlet.

[0016] The first aluminum foil heat insulation pipe has its two ends connected to the water outlet and the water outlet interface, respectively.

[0017] A water pump is mounted on the first aluminum foil heat-insulating pipe;

[0018] The second aluminum foil heat insulation tube has its two ends connected to the return port and the return interface, respectively.

[0019] A solenoid valve is installed on the second aluminum foil heat insulation tube and is used to control the on / off state of the second aluminum foil heat insulation tube.

[0020] Furthermore, the height of the return port is lower than the height of the return interface.

[0021] Furthermore, the water storage tank is equipped with a PLC controller, and the upper end of the weight hanging rope is equipped with a tension sensor; the PLC controller is electrically connected to the tension sensor, the water pump, and the solenoid valve, and the PLC controller controls the start / stop state of the water pump and the on / off state of the solenoid valve according to the measurement value of the tension sensor.

[0022] Furthermore, the water storage tank is equipped with a heating rod and a temperature sensor; the PLC controller is electrically connected to the heating rod and the temperature sensor; the PLC controller controls the heating rod to heat the water in the water storage tank according to the measurement value of the temperature sensor.

[0023] Furthermore, the counterweight water tank is provided with a tank lining, and the space between the tank lining and the tank wall of the counterweight water tank is filled with insulating rock wool.

[0024] Furthermore, the counterweight water tank is also equipped with:

[0025] The top plate is fixed to the top of the water tank liner;

[0026] The lower pad is fixed to the bottom end of the water tank liner;

[0027] Several inner frames, each having a strip-shaped structure, are fixedly connected at both ends to the upper top plate and the lower pad plate, respectively; the several inner frames are arranged parallel to each other at equal intervals along the inner wall of the water tank lining.

[0028] The beneficial effects of this utility model are as follows: The contact wire tension adaptive adjustment device provided in this application adjusts the tension of the contact wire by setting the contact wire weight assembly and the tension adjustment assembly in cooperation, and by changing the water storage in the counterweight water tank, thus achieving a precise control effect; by setting the PLC controller and the tension sensor, water pump and solenoid valve for interlocking control, the contact wire tension adaptive adjustment device can make adaptive adjustments according to the contact wire tension; by setting the PLC controller and the heating rod and temperature sensor for interlocking control, the contact wire tension adaptive adjustment device has the function of heat preservation and antifreeze in low temperature environment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of a contact wire tension adaptive adjustment device provided in an embodiment of this utility model;

[0030] Figure 2 This is a schematic diagram of the internal structure of the water storage tank in an embodiment of this utility model;

[0031] Figure 3 This is a schematic diagram of the internal structure of the counterweight water tank in an embodiment of this utility model;

[0032] Figure 4 This is a schematic diagram of the internal structure of the counterweight water tank in an embodiment of this utility model;

[0033] Figure 5 This is a schematic diagram of the weight structure in an embodiment of this utility model.

[0034] The markings in the diagram are as follows:

[0035] 1. Contact wire weight assembly;

[0036] 11. Weight hanging cable; 111. Tension sensor; 12. Weight base; 13. Weight; 14. Counterweight water tank; 141. Water outlet; 142. Return port; 143. Water tank lining; 144. Thermal insulation rock wool; 145. Top plate; 146. Bottom pad; 147. Internal frame;

[0037] 2. Tension adjustment assembly;

[0038] 21. Water storage tank; 211. Water inlet; 212. Water outlet; 213. Return outlet; 214. PLC controller; 215. Heating rod; 216. Temperature sensor; 22. First aluminum foil heat insulation pipe; 23. Water pump; 24. Second aluminum foil heat insulation pipe; 25. Solenoid valve. Detailed Implementation

[0039] 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 embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] Please see Figures 1 to 5 The embodiment of this application shows a catenary wire tension adaptive adjustment device. In practical applications, the catenary wire tension adaptive adjustment device uses its own gravity to balance the tension of the catenary wire and can adjust the force applied to the catenary in real time according to the temperature to cope with the tension changes of the catenary wire under different weather conditions, ensuring that the train pantograph can stably collect current. The catenary wire tension adaptive adjustment device includes: catenary weight assembly 1 and tension adjustment assembly 2; the tension adjustment assembly 2 is connected to the catenary weight assembly 1, and the tension adjustment assembly 2 changes the tension at both ends of the catenary wire by adjusting the overall weight of the catenary weight assembly 1, thereby achieving the technical effect of increasing or decreasing the catenary tension.

[0044] Please see Figure 1 In this embodiment, the contact wire weight assembly 1 includes: weight hanging cable 11, weight base 12, several weights 13 and counterweight water tank 14; wherein, the upper end of the weight hanging cable 11 is connected to the steel cable of the contact wire ratchet compensation device.

[0045] The base of the weight 12 has a disc-shaped structure and is connected to the lower end of the weight hanging rope 11.

[0046] As one embodiment of this application, the weight 13 is made of reinforced concrete and is a cylindrical block structure with a strip-shaped notch on one side edge. Several weights 13 are stacked on top of the weight base 12 along the direction of the weight hanging cable 11, and the weight hanging cable 11 is located in the strip-shaped notch of each weight 13.

[0047] The counterweight water tank 14 is cylindrical in shape, and its cross-sectional shape and size match the cross-section of the weight 13. The counterweight water tank 14 is positioned above the weights 13 and together with the weights 13, serves as a counterweight at one end of the contact wire. Furthermore, the counterweight water tank 14 is also connected to the tension adjustment component 2, which adjusts the total weight of the contact wire weight assembly 1 by changing the amount of water stored in the counterweight water tank 14.

[0048] The tension adjustment assembly 2 includes: a water storage tank 21, a first aluminum foil heat insulation pipe 22, a water pump 23, a second aluminum foil heat insulation pipe 24, and a solenoid valve 25. The water storage tank 21 has a water inlet 211 on its top. The bottom of the side wall of the water storage tank 21 has a water outlet 212 connecting the inside and outside of the water storage tank 21. The top of the side wall of the counterweight water tank 14 has a water outlet 141 connecting the inside and outside of the counterweight water tank 14. The water outlet 212 and the water outlet 141 are connected by the first aluminum foil heat insulation pipe 22. The water pump 23 is mounted on the first aluminum foil heat insulation pipe 22 and pumps water from the water storage tank 21 along the first aluminum foil heat insulation pipe 22 to the counterweight water tank 14, increasing the total weight of the contact wire weight assembly 1 and thus increasing the tension of the contact wire.

[0049] The bottom side wall of the counterweight water tank 14 is provided with a return port 142 connecting the inside and outside of the counterweight water tank 14, and the top side wall of the water storage tank 21 is provided with a return port 213 connecting the inside and outside of the water storage tank 21. The return port 142 and the return port 213 are connected by a second aluminum foil heat insulation pipe 24. The solenoid valve 25 is installed on the second aluminum foil heat insulation pipe 24. The solenoid valve 25 is used to control the on / off state of the second aluminum foil heat insulation pipe 24, so that the water in the counterweight water tank 14 can flow back to the water storage tank 21 along the second aluminum foil heat insulation pipe 24, thereby reducing the tension of the contact wire.

[0050] In the above technical solution, in order to enable the water in the counterweight water tank 14 to flow into the water storage tank 21 by gravity, the setting height of the return port 213 is lower than the setting height of the return interface 142.

[0051] In a preferred embodiment of this application, a PLC controller 214 is provided on the water storage tank 21, and a tension sensor 111 is provided at the upper end of the weight hanging cable 11; the PLC controller 214 is electrically connected to the tension sensor 111, the water pump 23, and the solenoid valve 25; in this embodiment, the PLC controller 214 can control the start and stop status of the water pump 23 and the on / off status of the solenoid valve 25 simultaneously according to the measurement value fed back by the tension sensor 111, so as to control the water storage in the counterweight water tank 14 within the target range, thereby realizing the fine adjustment of the contact wire tension.

[0052] Please see Figure 2 In a preferred embodiment of this application, the water storage tank 21 is equipped with an electric heating rod 215 and a temperature sensor 216; the PLC controller 214 is electrically connected to the electric heating rod 215 and the temperature sensor 216; in a low-temperature environment, when the temperature sensor 216 measures that the water temperature in the water storage tank 21 is below zero degrees, the PLC controller 214 controls the electric heating rod 215 to be powered on to heat the water to prevent the water from freezing.

[0053] Please see Figure 3 and Figure 4 As one embodiment of this application, a water tank liner 143 is provided inside the counterweight water tank 14. Thermal insulation rock wool 144 is filled between the water tank liner 143 and the tank wall of the counterweight water tank 14. An upper top plate 145 is fixed to the top of the water tank liner 143, and a lower pad plate 146 is fixed to the bottom of the water tank liner 143. Several inner frames 147 are provided on the inner side of the water tank liner 143. The inner frames 147 are strip-shaped. The two ends of the inner frames 147 are fixedly connected to the upper top plate 145 and the lower pad plate 146, respectively. The several inner frames 147 are arranged parallel to each other at equal intervals along the inner wall of the water tank liner 143. The inner frames 147, the upper top plate 145, and the lower pad plate 146 together form a cage-shaped frame to increase the internal structural strength of the counterweight water tank 14 and improve its compressive strength.

[0054] The contact wire tension adaptive adjustment device provided in this application adjusts the tension of the contact wire by setting the contact wire weight assembly 1 and the tension adjustment assembly 2 in cooperation, and by changing the water storage in the counterweight water tank 14, achieving a precise control effect. By setting the PLC controller 214 to be interlocked with the tension sensor 111, the water pump 23 and the solenoid valve 25, the contact wire tension adaptive adjustment device can make adaptive adjustments according to the contact wire tension. By setting the PLC controller 214 to be interlocked with the heating rod 215 and the temperature sensor 216, the contact wire tension adaptive adjustment device has the function of heat preservation and antifreeze in low temperature environment.

[0055] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A contact wire tension adaptive adjustment device, characterized in that, include: Contact wire weight assembly and tension adjustment assembly; The tension adjustment component is connected to the contact wire weight assembly; The contact wire weight assembly includes: The upper end of the weight-hanging cable is connected to the steel cable of the contact wire ratchet compensation device; The weight base is connected to the lower end of the weight hanging rope; Several weights are stacked on top of the weight base along the direction of the weight hanging rope; A counterweight water tank is disposed above the weight and connected to the tension adjustment assembly. The tension adjustment assembly adjusts the total weight of the contact wire weight assembly by changing the amount of water stored in the counterweight water tank.

2. The adaptive adjustment device for contact wire tension according to claim 1, characterized in that, The counterweight water tank is cylindrical, and the shape and size of its cross-section match the cross-section of the weight; the top of the side wall of the counterweight water tank is provided with a water outlet; the bottom of the side wall of the counterweight water tank is provided with a return flow interface.

3. The adaptive adjustment device for contact wire tension according to claim 2, characterized in that, The tension adjustment component includes: A water storage tank, wherein the top of the tank body is provided with a water inlet; the bottom of the side wall of the water storage tank is provided with a water outlet; and the top of the side wall of the water storage tank is provided with a return outlet. The first aluminum foil heat insulation pipe has its two ends connected to the water outlet and the water outlet interface, respectively. A water pump is mounted on the first aluminum foil heat-insulating pipe; The second aluminum foil heat insulation tube has its two ends connected to the return port and the return interface, respectively. A solenoid valve is installed on the second aluminum foil heat insulation tube and is used to control the on / off state of the second aluminum foil heat insulation tube.

4. The adaptive adjustment device for contact wire tension according to claim 3, characterized in that, The height of the return port is lower than the height of the return interface.

5. The contact wire tension adaptive adjustment device according to claim 3, characterized in that, The water storage tank is equipped with a PLC controller, and the upper end of the weight hanging rope is equipped with a tension sensor. The PLC controller is electrically connected to the tension sensor, the water pump, and the solenoid valve. The PLC controller controls the start and stop status of the water pump and the on / off status of the solenoid valve according to the measurement value of the tension sensor.

6. The contact wire tension adaptive adjustment device according to claim 5, characterized in that, The water storage tank is equipped with an electric heating rod and a temperature sensor; the PLC controller is electrically connected to the electric heating rod and the temperature sensor; the PLC controller controls the electric heating rod to heat the water in the water storage tank according to the measurement value of the temperature sensor.

7. The adaptive adjustment device for contact wire tension according to claim 1, characterized in that, The counterweight water tank is equipped with a tank lining, and the space between the tank lining and the tank wall of the counterweight water tank is filled with thermal insulation rock wool.

8. The contact wire tension adaptive adjustment device according to claim 7, characterized in that, The counterweight water tank is also equipped with: The top plate is fixed to the top of the water tank liner; The lower pad is fixed to the bottom end of the water tank liner; Several inner frames, each having a strip-shaped structure, are fixedly connected at both ends to the upper top plate and the lower pad plate, respectively; the several inner frames are arranged parallel to each other at equal intervals along the inner wall of the water tank lining.

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