A contact wire laying vehicle

Abstract

The embodiment of the present application provides a contact network pay-off vehicle including: a frame; a road-rail dual-purpose tire installed under the frame; a side guide device, the side guide device is installed on the side of the frame, the side guide device can be extended and retracted in the lateral direction away from the frame, and the side guide device can be extended and retracted downward in the vertical direction; wherein the side guide device is used to guide the pay-off vehicle on the side of the track plate attached to the track, and the lateral direction is the width direction of the two rails of the track. The embodiment of the present application solves the technical problem that the traditional contact network pay-off vehicle in the form of a special rail vehicle cannot meet the current requirements of the contact network construction period.

Description

Technical Field

[0001] The present application relates to the technical field of highway and railway construction equipment, and in particular to a contact network laying vehicle. Background Art

[0002] With the development of high-speed electrified railways, the level of overhead line construction technology, equipment and process has been continuously improved, and higher requirements have been put forward for operating equipment. The traditional overhead line laying vehicle is a special rail vehicle.

[0003] During the construction of the four power projects behind high-speed railway stations, the post-station projects often have zero or negative construction periods. There is insufficient equipment to meet the construction deadline, and the project schedule cannot be delayed. In addition, the railway track is not laid in time during on-site construction, and the traditional special rail vehicles cannot arrive on time. In addition, the management of special rail vehicles is complicated.

[0004] Therefore, the traditional contact network laying vehicle in the form of a special rail vehicle cannot meet the requirements of the current contact network construction period, which is a technical problem that technical personnel in this field urgently need to solve.

[0005] The above information disclosed in the background section is only for enhancing understanding of the background of the present application and therefore it may contain information that does not form the prior art known to a person of ordinary skill in the art. Summary of the invention

[0006] The embodiment of the present application provides a contact network pay-off vehicle to solve the technical problem that the traditional contact network pay-off vehicle in the form of a special rail vehicle cannot adapt to the current contact network construction period requirements.

[0007] A contact wire-laying vehicle according to an embodiment of the present application includes:

[0008] Frame;

[0009] Road and rail dual-purpose tires, installed under the frame;

[0010] A side guide device, the side guide device is installed on the side of the frame, the side guide device can be extended and retracted in the lateral direction away from the frame, and the side guide device can be extended and retracted downward in the vertical direction;

[0011] The side guide device is used to guide the wire-laying vehicle by being attached to the side of the track plate of the track, and the transverse direction is the width direction of the two rails of the track.

[0012] The embodiment of the present application adopts the above technical solution, which has the following technical effects:

[0013] When it is necessary to travel on the road, the side guide device remains retracted; when it is necessary to travel on the track, the road-rail dual-purpose tire is placed on the track of the track, and the side guide device extends in the lateral direction away from the frame, and then extends downward in the vertical direction, close to the side of the track plate of the track, to guide the wire-laying vehicle to prevent the contact wire-laying vehicle from shifting sideways and tipping over when traveling. That is, the side guide device guides through the side of the track plate of the track, which is particularly suitable for the situation where the track plate of the track has been laid, but the track rails have not yet been laid. In this way, the contact wire-laying vehicle can also lay the contact wire when the track rails have not yet been laid, and can better meet the requirements of the contact wire construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 A schematic diagram of a contact network pay-off vehicle according to an embodiment of the present application;

[0016] Figure 2 for Figure 1 A schematic diagram showing a vertical guide wheel of a vertical guide device of a contact network pay-off vehicle being pressed onto a rail of a track;

[0017] Figure 3 A simplified schematic diagram of a constant tension wire-paying device of a contact wire-paying vehicle according to an embodiment of the present application;

[0018] Figure 4 for Figure 3 The diagram shows the connection between the hydraulic control components and the hydraulic actuator components of the overhead wire-laying vehicle.

[0019] Reference numerals:

[0020] 120 frame, 130 road and rail dual-purpose tire, 140 side guide device, 141 side guide wheel, 150 vertical guide device, 151 vertical guide wheel,

[0021] 110 pay-off drum, 111 pay-off drum clamp, 112 guide rope wheel, 113 pay-off drum moving device,

[0022] 210 tension disc, 211 tension disc clamp, 213 tension disc moving device,

[0023] 310 lifting column, 313 lifting power device,

[0024] 411 engine, 412 hydraulic oil pump, 413 electro-hydraulic proportional valve, 414 oil tank, 415 solenoid valve, 416 hydraulic motor,

[0025] 11 contact wire, 12 track plate. DETAILED DESCRIPTION

[0026] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0027] Embodiment 1

[0028] like Figure 1 and Figure 2 As shown, the overhead wire laying vehicle of the embodiment of the present application comprises:

[0029] Frame 120;

[0030] A road-rail dual-purpose tire 130, mounted under the vehicle frame 120;

[0031] A side guide device 140, wherein the side guide device 140 is installed on a side of the frame 120, and the side guide device 140 can be extended and retracted in a lateral direction away from the frame, and the side guide device 140 can be extended and retracted downward in a vertical direction;

[0032] The side guide device 140 is used to guide the overhead wire pay-off vehicle by being attached to the side of the track plate 12 of the track, and the transverse direction is the width direction of the two rails of the track.

[0033] The overhead wire-laying vehicle of the embodiment of the present application, when it needs to travel on a highway, the side guide device remains retracted; when it needs to travel on a track, the road-rail dual-purpose tire is placed on the track of the track, and the side guide device extends in the lateral direction away from the frame, and then extends downward in the vertical direction, close to the side of the track plate of the track, to guide the wire-laying vehicle to prevent the overhead wire-laying vehicle from shifting sideways and tipping over when traveling, that is, the side guide device guides through the side of the track plate of the track, which is particularly suitable for the situation where the track plate of the track has been laid, but the track rails have not yet been laid. In this way, the overhead wire-laying vehicle can also lay the contact wire when the track rails have not yet been laid, and can better meet the requirements of the overhead wire construction period.

[0034] The overhead wire laying vehicle of the embodiment of the present application has a compact structure, can realize rapid switching between road and rail travel, and can realize rapid transfer.

[0035] In implementation, such as Figure 1 and Figure 2As shown, the lower end of the side guide device 140 has a side guide wheel 141;

[0036] The side guide wheel 141 is used to roll on the side of the track plate 12 of the track to guide the overhead wire pay-off vehicle in the longitudinal direction;

[0037] The longitudinal direction is the length direction of the track.

[0038] The side guide wheel at the lower end of the side guide device rolls closely against the side of the track plate of the track to guide the contact network pay-off vehicle in the longitudinal direction, and the friction between the two is small.

[0039] In implementation, such as Figure 1 and Figure 2 As shown, the side guide devices 140 are in two pairs, and each pair of side guide devices 140 is symmetrically installed on both sides of the frame 120;

[0040] One pair of side guide devices is arranged at a position one quarter of the distance from the head of the frame, and the other pair of side guide devices is arranged at a position three quarters of the distance from the head of the frame.

[0041] Each pair of side guide devices is symmetrically arranged on both sides of the frame. In this way, the side guide devices symmetrically arranged on both sides of the frame can apply a preset pressure to each side guide device during side guiding, so that the side guide will not be offset, and the two side surfaces of the track plate of the track receive two forces in opposite directions, and the force on the track plate is balanced.

[0042] Two pairs of side guide devices are evenly arranged on both sides of the frame, so that the whole frame is stressed evenly and the side guides will not deviate.

[0043] In implementation, such as Figure 1 and Figure 2 As shown, the overhead line laying vehicle also includes:

[0044] A vertical guide device 150 is installed below the frame 120, and the vertical guide device 150 can be extended and retracted downward in the vertical direction;

[0045] The bottom end of the vertical guide device 150 is provided with a vertical guide wheel 151, and the vertical guide wheel 151 is used to press on the rail of the track to guide the overhead wire pay-off vehicle in the longitudinal direction.

[0046] The vertical guide wheel at the bottom end of the vertical guide device rolls closely on the rail of the track to guide the overhead wire laying vehicle in the longitudinal direction, and the friction between the two is small.

[0047] Specifically, there are two pairs of vertical guide devices 150 symmetrically installed at the front and rear ends of each side of the frame 120 .

[0048] The overhead wire-laying vehicle of the embodiment of the present application includes a road-rail dual-purpose chassis, an overhead wire constant tension laying device, a power system, a control system, a braking system, a hydraulic system and an electrical system.

[0049] The road-rail dual-purpose chassis comprises a frame, a cab arranged on the frame, a drive axle and a steering drive axle connected to the bottom of the frame and connected to road-rail dual-purpose tires, a side guide device connected to the frame, and a guide steel wheel device connected to the front and rear of the frame.

[0050] The frame is a steel welded structure, serving as a load-bearing body.

[0051] The cab is arranged on the front part of the vehicle frame and is a simple shed-type structure. The cab is equipped with an integrated operation panel and a liquid crystal display, and multiple cameras are arranged outside the vehicle to display various machine parameters and external environment scenes.

[0052] The steering drive axle and drive axle adopt domestic or imported special road-rail dual-purpose axles, and select appropriate axle weight, reduction ratio, and braking torque to ensure that all parameters of the drive axle have safe redundancy. The drive axle has steering and hydraulic disc brakes, and is equipped with a parking brake function to achieve emergency stopping.

[0053] The road-rail dual-purpose tire is a rubber tire that can be used for a long time under continuous working hours and heavy load conditions, and is connected to the drive axle.

[0054] The side guide device is connected to the frame to prevent the vehicle from lateral shifting and overturning, and includes a lateral movement mechanism, a longitudinal movement mechanism, a lateral movement cylinder, a longitudinal movement cylinder, a mounting seat, a guide roller, etc.; the guide steel wheel device is respectively connected to the front and rear of the frame for railway running, and includes a wheel pair, a frame, a luffing cylinder and a shock-absorbing spring, etc., and is not powered.

[0055] The road-rail dual-purpose tire is driven by the steering drive axle and the drive axle, that is, the overhead wire laying vehicle is self-powered. Both the side guide wheels and the vertical guide wheels are rigid guide wheels.

[0056] The power system is arranged in the middle of the dual-purpose road-rail chassis, and includes an engine, a fuel tank, a refueling pump and an oil pipe, etc. The system is also provided with a backup pump to provide power to devices other than running when the vehicle breaks down or is under maintenance.

[0057] The control system is arranged in the cab of the dual-purpose road-rail chassis, and includes a power control system, a running control system, a vehicle following control system, a side guide control system, a guide steel wheel control system, a constant tension pay-off control system, etc.

[0058] The braking system includes hydraulic braking and hand braking. The service braking adopts the hydraulic disc brake of the drive axle, and the parking braking adopts the wet brake of the drive axle. In addition, an emergency braking system is provided. In an emergency, pressing the emergency braking button can realize emergency braking of the whole vehicle. An auxiliary braking system is provided, and operation buttons are provided at appropriate positions of the control panel and the vehicle body railings.

[0059] The hydraulic system includes a running hydraulic system, a steering brake hydraulic system, a guide hydraulic system and a top hydraulic system. The running hydraulic system is responsible for the running of the wire-releasing vehicle, the steering brake hydraulic system is responsible for the braking and steering of the wire-releasing vehicle, the guide hydraulic system is responsible for the side guide transverse movement and lifting, the guide steel wheel lifting and cooling system, and the top hydraulic system is responsible for the operation of the constant tension wire-releasing device. The oil cylinder is used to realize the centering of the contact network wire drum frame and the load-bearing cable wire drum frame and the tension adjustment of the constant tension device. The wire drum frame brake valve and the tension wheel brake valve are used to control the on and off of the brake disc oil circuit to realize the braking and release of the contact network, the load-bearing cable drum and the tension wheel. The hydraulic system is provided with an emergency system. When the power system or the main system fails, the emergency system is started to ensure the safety of the wire-releasing vehicle. All hydraulic control components of the system have pressure sensors that digitally display the working pressure, and the pressure in each circuit can be monitored and displayed, which is convenient for the installation of various instruments, manual reversing valves and other components, and convenient for the driver to observe and operate, and there are corresponding indicator signs.

[0060] The electrical system is composed of an electric control box, a signal junction box, an alarm, an electric horn and an operating table, and a remote control can be configured according to needs.

[0061] Embodiment 2

[0062] The embodiments of the present application, based on the first embodiment, also have the following features.

[0063] like Figure 3 As shown, the overhead wire pay-off vehicle of the embodiment of the present application includes a constant tension pay-off device fixed on the vehicle frame, and the constant tension pay-off device includes:

[0064] A wire pay-off drum 110 is fixed on the frame; wherein the wire pay-off drum 110 is used for pre-winding the contact wire 11;

[0065] A tension applying device at the pay-off reel is installed at the pay-off reel 110; wherein the tension applying device at the pay-off reel is used to apply tension to the outgoing wire of the pay-off reel 110;

[0066] A tension machine is fixed on the frame and spaced apart from the pay-off drum 110; wherein the tension machine is used to carry the wires output from the pay-off drum 110 and output the wires from the tension machine after tension is applied.

[0067] The overhead wire-paying vehicle of the embodiment of the present application, the overhead wire constant tension pay-off device is orderly arranged on the dual-purpose chassis for road and rail, which can realize the pay-off and take-up of the overhead wire and the load-bearing cable of the electrified railway, and can realize the constant tension pay-off operation, and the tension can be adjusted according to actual needs. The constant tension pay-off device has two components that can apply tension, a tension applying device at the pay-off reel and a tension machine. The tension applying device at the pay-off reel is used to apply tension to the outgoing wire of the pay-off reel, and the tension machine applies tension to the contact wire carried by itself and released through the pay-off reel and outputs the wire. The overhead wire-paying vehicle of the embodiment of the present application, by providing two components that can apply tension, a tension applying device at the pay-off reel and a tension machine, provides conditions for stabilizing the tension value of the pay-off vehicle.

[0068] In implementation, such as Figure 3 As shown, the tension machine includes two tension disks 210 that rotate synchronously; wherein the two tension disks 210 are used to carry the outgoing wire of the pay-off disk 110;

[0069] The tension applying device at the pay-off reel comprises:

[0070] The pay-off drum rotation resistance applying device is used to apply rotation resistance to the rotation of the pay-off drum 110 , so that the pay-off drum 110 and the tension drum 210 rotate in the same direction, and the rotation speed of the pay-off drum 110 is lower than the rotation speed of the tension drum 210 .

[0071] In traditional pay-off vehicles, the pay-off reel generally rotates passively with the tension reel. As the contact wire on the pay-off reel is paid out, the weight of the pay-off reel decreases, and the rotational resistance of the pay-off reel becomes smaller and smaller, causing the tension value of the wire between the pay-off reel and the tension reel to become smaller and smaller, which means that the contact wire wound on the tension reel gradually becomes loose, so that the contact wire subsequently erected cannot reach the specified tension value, seriously reducing the stability and elasticity of the contact network structure.

[0072] The contact wire pay-off vehicle in the embodiment of the present application has a pay-off drum rotational resistance applying device. As the contact wire on the steering wheel is paid out, the weight of the pay-off drum decreases, and the rotational resistance of the pay-off drum becomes smaller. The pay-off drum rotational resistance applying device can apply rotational resistance, so that the tension value of the contact wire between the pay-off drum and the tension machine can be adjusted, which provides conditions for stabilizing the tension value of the pay-off vehicle when paying out wire.

[0073] During implementation, the overhead line laying vehicle also includes:

[0074] The control unit is used to control the pay-off drum rotation resistance applying device to apply rotation resistance to the rotation of the pay-off drum according to the pay-off tension target value of the pay-off vehicle, the actual tension value of the wire coming out of the pay-off drum and the actual tension value of the wire coming out of the tension machine.

[0075] The rotation resistance applied by the pay-off drum rotation resistance applying device to the rotation of the pay-off drum is controlled by the control unit, so that the rotation of the pay-off drum is controlled by the control unit. In this way, the contact tension value between the pay-off drum and the tension machine can be adjusted, providing conditions for the stability of the tension value of the contact network pay-off vehicle.

[0076] In implementation, such as Figure 3 As shown, the tension applying device at the pay-off reel also includes:

[0077] A wire pay-off reel clamp 111, one wire pay-off reel clamp 111 is correspondingly installed on one wire pay-off reel; wherein the wire pay-off reel clamp 111 is used to clamp the contact wire 11 at the wire outlet position of the wire pay-off reel 110 and then apply a braking force to the wire outlet;

[0078] The tension machine also includes:

[0079] The tension disk clamp 211 is installed on one tension disk 210; wherein the tension disk clamp is used to clamp the contact line at the outlet position of the tension disk and apply braking force, and then wind the line around the two tension disks with a preset number of turns to outlet the line.

[0080] The contact wire pay-off vehicle moves forward at a constant speed in the direction of contact wire erection to pull the contact wire, providing tension for the erection of the contact wire. The braking force provided by the pay-off reel clamp and the tension reel clamp provides tension for the erected contact wire.

[0081] The pay-off reel clamp can provide braking force for the outgoing wire of the pay-off reel, that is, provide tension for the outgoing wire of the pay-off reel; the tension reel clamp can provide braking force for the outgoing wire of the tension reel, that is, provide tension for the outgoing wire of the tension reel.

[0082] In implementation, such as Figure 3 As shown, the control unit is also used to control the braking force applied by the pay-off reel clamp 111 and the tension reel clamp 211 according to the pay-off tension target value of the pay-off vehicle, the actual tension value of the pay-off reel and the actual tension value of the tension machine, so that the absolute value of the difference between the actual tension value of the tension machine and the target value of the pay-off vehicle is within a preset range. The pay-off tension target value is the pay-off tension set value.

[0083] In this way, the control unit controls the braking force applied by the pay-off reel clamp and the tension reel clamp and the pay-off reel rotation resistance applying device to apply rotational resistance to the rotation of the pay-off reel according to the pay-off tension target value of the pay-off vehicle, the actual tension value of the wire coming out of the pay-off reel and the actual tension value of the wire coming out of the tension machine.

[0084] Specifically, the control unit is based on the pay-off tension target value of the pay-off vehicle, the actual tension value of the pay-off reel and the actual tension value of the tension machine;

[0085] The braking force applied by the pay-off reel clamp and the tension reel clamp is preferentially controlled; when the braking force that can be applied by the pay-off reel clamp and the tension reel clamp reaches the upper limit value of their respective adjustment ranges, the pay-off reel clamp and the tension reel clamp can no longer be adjusted; then the pay-off reel rotation resistance applying device is controlled to apply rotation resistance to the rotation of the pay-off reel, so that the absolute value of the difference ratio between the actual tension value of the wire coming out of the tension machine and the target value of the wire coming out of the pay-off vehicle is within a preset range, such as less than or equal to 5%.

[0086] In implementation, such as Figure 3 and Figure 4 As shown, the overhead line laying vehicle also includes:

[0087] The tension disk moving device 213 is connected to the two tension disks 210 , wherein the tension disk moving device 213 is used to move the two tension disks 210 away from and close to the pay-off disk 110 .

[0088] That is, when the tension disc clamp, the pay-off disc clamp, and the pay-off disc rotation resistance applying device have all applied their respective maximum tensions, and the tension value of the contact line at the outlet position of the tension machine still cannot reach the pay-off tension target value of the pay-off vehicle, the tension disc moving device can be used to adjust the position of the two tension discs as a whole relative to the tension disc to achieve compensation of the outlet tension, ensuring that the constant tension control of the contact line can still be met under extreme conditions. The pay-off tension target value of the pay-off vehicle is consistent with the specified tension of the contact line of the contact network. In this way, if the actual value of the directional tension of the contact network pay-off vehicle can reach the pay-off tension target value, the contact line erected by the contact network pay-off vehicle reaches the specified tension of the contact line.

[0089] In implementation, such as Figure 3 and Figure 4 As shown, the overhead line laying vehicle also includes:

[0090] A wire pay-off reel moving device 113, connected to the wire pay-off reel 110, wherein the wire pay-off reel moving device 113 is used to move the wire pay-off reel 110 along the axial direction of the wire pay-off reel;

[0091] A guide rod, wherein the guide rod is fixed between the pay-off drum and the tension machine, and the length direction of the guide rod is consistent with the axial direction of the pay-off drum;

[0092] A guide rope wheel 112 is sleeved on the outer circumference of the guide rod, and the guide rope wheel 112 can move along the length direction of the guide rod;

[0093] Among them, the outgoing wire of the pay-off drum 110 enters the tension machine through the lower wheel surface of the guide rope wheel 112 to control the incoming wire height of the contact wire in the tension machine; the pay-off drum 110 can move along the axial direction of the pay-off drum so that the outgoing wire position of the pay-off drum is close to the incoming wire position of the tension machine, and the goal of adjusting the position of the pay-off drum is to make the outgoing wire of the pay-off drum and the incoming wire of the tension machine be in the same straight line or close to the same straight line.

[0094] As the pay-off drum pays out the wire, the height of the wire outlet of the pay-off drum will increase, and the wire outlet of the pay-off drum will enter the tension machine through the lower wheel surface of the guide rope wheel, so that even if the height of the wire outlet of the pay-off drum increases, the height of the wire inlet of the contact wire in the tension machine remains unchanged. The pay-off drum moving device can drive the pay-off drum to move along the axial direction of the pay-off drum, so that the wire outlet position of the pay-off drum can be adjusted in conjunction with the wire inlet position of the tension machine in cooperation with the guide rope wheel and the guide rod, so that the wire outlet position of the pay-off drum and the wire inlet position of the tension machine are located in the same straight line, which can reduce the friction and pulling of the contact wire during the pay-off process and improve the quality of the contact network.

[0095] In implementation, the control unit is also used for:

[0096] According to the displacement of the guide rope wheel along the guide rod from the reference position, the pay-off drum is controlled to move in the same direction along the axial direction of the pay-off drum, so that the outgoing line position of the pay-off drum is close to the incoming line position of the tension machine. The goal of adjusting the position of the pay-off drum is to make the outgoing line of the pay-off drum and the incoming line of the tension machine be in the same straight line or close to the same straight line.

[0097] The pay-off drum moving device can drive the pay-off drum to move along the axial direction of the pay-off drum. In this way, in conjunction with the guide rope wheel and the guide rod, the wire outlet position of the pay-off drum can be adjusted in conjunction with the wire inlet position of the tension machine, so that the wire outlet position of the pay-off drum and the wire inlet position of the tension machine are located in the same straight line or close to the same straight line, thereby achieving the centering of the contact line.

[0098] During implementation, the overhead line laying vehicle also includes:

[0099] A wire tension sensor for the wire pay-off reel is connected to the control unit for communication and is arranged at the wire outlet position of the wire pay-off reel, and is used to obtain the actual tension value of the wire outlet of the wire pay-off reel and transmit it to the control unit;

[0100] A tension sensor for the outlet wire of the tension machine, which is in communication connection with the control unit and is arranged at the outlet wire position of the tension machine, and is used to obtain the actual tension value of the outlet wire of the tension machine and transmit it to the control unit;

[0101] A guide rope wheel distance sensor is communicatively connected with the control unit and is arranged on the guide rope wheel for obtaining the distance that the guide rope wheel deviates from the preset position of the guide rope wheel on the guide rod and transmitting the obtained distance to the control unit.

[0102] The pay-off reel outlet tension sensor, the tension machine outlet tension sensor and the guide rope wheel distance sensor are used to obtain the actual tension value of the pay-off reel outlet wire, the actual tension value of the tension machine outlet wire, and the distance that the guide rope wheel deviates from the preset position of the guide rope wheel on the guide rod, providing a basis for the control of the control unit.

[0103] In implementation, such as Figure 3 As shown, the overhead line laying vehicle also includes:

[0104] A lifting column 310, wherein the lifting column 310 is fixed on the frame, and the pay-off drum 110 is located between the lifting column 310 and the tension machine;

[0105] A lifting power device 313, wherein the lifting power device 313 is used to provide lifting power for the lifting column 310;

[0106] The jacking column 310 is used to jack up the contact wire of the tension machine, and the jacking column can be raised and lowered to adapt to the height of the contact network.

[0107] The existence of the jacking column enables the wire-laying height of the overhead wire-laying vehicle to be adjusted, making the overhead wire-laying vehicle more versatile.

[0108] The key points of the embodiments of the present application include:

[0109] The control unit realizes automatic adjustment of the tension value of the outgoing wire of the overhead wire pay-off car by controlling the applied braking force of the pay-off reel clamp and the tension reel clamp, and the rotational resistance of the pay-off reel rotational resistance applying device. The adjustment target is to make the actual tension value of the outgoing wire of the tension machine as close as possible to the target value of the outgoing wire of the pay-off car, or at least the absolute value of the difference ratio between the actual tension value of the outgoing wire of the tension machine and the target value of the outgoing wire of the pay-off car is within a preset range, such as less than or equal to 5%. In this way, the outgoing wire of the overhead wire pay-off car is a constant tension overhead wire pay-off car.

[0110] The control unit combines the guide pulley, guide rod and guide pulley distance sensor to make the outgoing wire of the pay-off drum and the incoming wire of the tension machine roughly in a straight line, thus achieving automatic centering.

[0111] When the actual tension value of the outgoing wire of the contact network pay-off vehicle still fails to reach the target value of the outgoing wire of the pay-off vehicle within the adjustment range of the pay-off reel clamp, the tension reel clamp and the pay-off reel rotation resistance applying device, the position of the two tension reels as a whole is moved as a whole by the tension reel moving device to perform tension compensation.

[0112] In implementation, such as Figure 4 As shown, the overhead wire paying-off vehicle further comprises:

[0113] Two tension disk driving devices, one tension disk driving device corresponds to one tension disk, and the tension disk driving device is used to provide power for the rotation of the tension disk;

[0114] The pay-off drum moving device 113, the tension drum moving device 213, and the lifting power device 313 respectively use hydraulic cylinders;

[0115] The pay-off reel clamp and the tension reel clamp are hydraulic clamps.

[0116] During implementation, the overhead line laying vehicle also includes hydraulic control components:

[0117] Used to control the flow and pressure of the hydraulic oil in the hydraulic actuator to adjust the hydraulic pressure that can be converted by the hydraulic actuator;

[0118] Wherein, the hydraulic actuator assembly includes a hydraulic cylinder and a hydraulic clamp.

[0119] Specifically, Figure 4 As shown, the hydraulic control assembly includes an engine 411, a hydraulic oil pump 412 and an electro-hydraulic proportional valve 413. Figure 4 As shown, the engine 411 is connected to the hydraulic oil pump 412 through the transfer case, providing power for the hydraulic oil pump 412 so that the hydraulic oil pump 412 can convert mechanical energy into hydraulic energy; the hydraulic oil pump 412 is the power source of the entire hydraulic system and can meet the hydraulic system's requirements for pressure and flow. Among them, the oil inlet of the hydraulic oil pump 412 is connected to the oil tank 414, and the oil outlet is respectively connected to each hydraulic actuator component to provide corresponding hydraulic energy to the hydraulic actuator component. The electro-hydraulic proportional valve 413 is set in the oil circuit between the hydraulic oil pump 412 and the hydraulic actuator component to control the flow and pressure of the hydraulic oil in the oil circuit. As shown Figure 4 As shown, the control end of the electro-hydraulic proportional valve is electrically connected to the PLC control system.

[0120] The control unit adopts a PLC control system. Through the sensor to collect signals, analyze and calculate, the flow and pressure of each oil circuit of the hydraulic system are detected and controlled in real time to adjust the tension applied to the contact line. During operation, the signal sensor transmits the signal to the PLC control system. After the PLC control system performs internal calculations, it transmits the control signal to the corresponding electro-hydraulic proportional valve 413 and solenoid valve 415, thereby controlling the flow and pressure of the hydraulic oil in the oil circuit through the electro-hydraulic proportional valve and the solenoid valve.

[0121] Specifically, the PLC control system is a new generation of industrial control device that introduces microelectronics technology, computer technology, automatic control technology and communication technology on the basis of traditional sequential controllers. Its purpose is to replace sequential control functions such as relays, execution logic, timing and counting, and establish a flexible remote control system.

[0122] The signal sensors include a pay-off reel outlet tension sensor, a tension machine outlet tension sensor, and a guide rope wheel distance sensor.

[0123] Pulse width modulation (PWM) technology.

[0124] Embodiment 3

[0125] The control method of the overhead wire pay-off vehicle of the embodiment of the present application automatically controls the cable pay-off vehicle described in the second embodiment, and the overhead wire pay-off vehicle applies a constant tension to the contact wire. The specific steps are as follows:

[0126] Step S1: starting the engine 411, and the engine 411 provides power to the hydraulic oil pump 412 through the transfer case;

[0127] Step S2: the hydraulic oil pump 412 is connected to the oil tank 414 to provide hydraulic oil to the hydraulic control component and the hydraulic actuator component;

[0128] Step S3: Before the contact wire is erected, the contact wire 11 on the pay-off drum 110 is wound onto the tension drum 210 through the guide rope wheel 112, the required tension is input into the PLC control system and the pay-off speed is set;

[0129] Step S4: When the contact wire 11 is erected, the pay-off vehicle moves forward at a constant speed according to the set pay-off speed, tensions the tension disk 210 and the contact wire on the pay-off disk 110, and the pay-off disk clamp 111 and the tension disk clamp 211 are clamped to provide braking force for the erection of the contact wire. The vehicle moves forward at a constant speed in the direction of the contact wire erection to pull the contact wire, providing tension for the erection of the contact wire. The target value of the vehicle's constant speed in the direction of the contact wire erection is the set value of the pay-off vehicle speed.

[0130] The tension of the contact line is detected by the pay-off reel outlet tension sensor and the tension machine outlet tension sensor, and then the signal is fed back to the PLC control system. The PLC control system performs PID calculation inside, and uses the calculation result to change the PWM value of the pay-off reel clamp 111 and the tension reel clamp 211, thereby changing the braking force of the pay-off reel clamp 111 and the tension reel clamp 211, so that the installed contact line reaches the specified tension;

[0131] The guide rope wheel 112 moves passively with the contact wire 11 released by the pay-off drum. The distance sensor of the guide rope wheel 112 transmits the real signal of the guide rope wheel position to the PLC control system. The PLC control system adjusts the solenoid valve of the hydraulic cylinder as the pay-off drum moving device according to the calculation result after calculation, and then adjusts the position of the pay-off drum 110 along the axial direction of the steering wheel, so that the outlet position of the pay-off drum 110 and the inlet position of the tension drum are on the same line;

[0132] If during the automatic tension adjustment process, the PLC control system determines that the adjustment range of the hydraulic clamp and the adjustment range of the tension disk driven by the tension disk moving device cannot meet the contact line tension requirement, the PLC control system controls the tension compensation cylinder serving as the tension disk driving device to connect, and adjusts the two tension disks 210 as a whole away from the pay-off disk 110, so that the contact line reaches the specified tension.

[0133] Step S5: After the contact wire is erected, the pay-off drum clamp 111 and the tension drum clamp 211 are released, and the pay-off drum 113 reeling hydraulic motor 416 is started to reel in the remaining contact wire and the catenary of the contact network pay-off vehicle.

[0134] The overhead wire-laying vehicle of the embodiment of the present application can realize the pay-out and take-up of the overhead wire and the load-bearing cable of the electrified railway, and can realize the pay-out operation with constant tension. The tension can be adjusted according to actual needs to ensure the pay-out quality.

[0135] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0136] In the present application and its embodiments, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0137] In the present application and its embodiments, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0138] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0139] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0140] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A contact wire pay-off vehicle, characterized in that: include: Frame; Road and rail dual-purpose tires, installed under the frame; A side guide device, the side guide device is installed on the side of the frame, the side guide device can be extended and retracted in the lateral direction away from the frame, and the side guide device can be extended and retracted downward in the vertical direction; The side guide device is used to guide the overhead wire laying vehicle by being attached to the side of the track plate of the track, and the transverse direction is the width direction of the two rails of the track; The overhead wire-paying vehicle further comprises a constant tension wire-paying device fixed on the vehicle frame, and the constant tension wire-paying device comprises: A wire pay-off drum is fixed on the frame; wherein the wire pay-off drum is used for pre-winding the contact wire; A tension applying device at the pay-off reel is installed at the pay-off reel; wherein the tension applying device at the pay-off reel is used to apply tension to the outgoing wire of the pay-off reel; A tension machine is fixed on the frame and spaced apart from the pay-off drum; wherein the tension machine is used to carry the wires coming out of the pay-off drum and apply tension to the wires before the wires come out of the tension machine; The tension machine comprises two synchronously rotating tension disks; wherein the two tension disks are used to carry the outgoing wire of the pay-off disk; The tension applying device at the pay-off reel comprises: A pay-off drum rotation resistance applying device, used to apply rotation resistance to the rotation of the pay-off drum, so that the pay-off drum and the tension drum rotate in the same direction, and the rotation speed of the pay-off drum is lower than the rotation speed of the tension drum; The overhead line laying vehicle also includes: A control unit, for controlling the pay-off drum rotation resistance applying device to apply rotation resistance to the rotation of the pay-off drum according to the pay-off tension target value of the pay-off vehicle, the actual tension value of the wire coming out of the pay-off drum and the actual tension value of the wire coming out of the tension machine; The tension applying device at the pay-off reel also includes: A pay-off reel clamp, one of the pay-off reel clamps is correspondingly installed on one pay-off reel; wherein the pay-off reel clamp is used to apply tension to the contact wire of the pay-off reel before the wire is released; The tension machine also includes: A tension disc clamp, wherein one tension disc clamp is correspondingly installed on one tension disc; wherein the tension disc clamp is used to clamp the contact line at the outlet position of the tension disc and apply a braking force, and then wind the line around two tension discs with a preset number of turns to outlet the line; The control unit is further used to control the braking force applied by the pay-off reel clamp and the tension reel clamp according to the pay-off tension target value of the pay-off vehicle, the actual tension value of the wire coming out of the pay-off reel and the actual tension value of the wire coming out of the tension machine, so that the absolute value of the difference ratio between the actual tension value of the wire coming out of the tension machine and the target value of the wire coming out of the pay-off vehicle is within a preset range; The overhead line laying vehicle also includes: A tension disk moving device, connected to the two tension disks, wherein the tension disk moving device is used to move the two tension disks away from the pay-off disk; The control unit is also used to control the tension disk moving device to move the two tension disks away from the pay-off disk after the pay-off disk clamp, the tension disk clamp and the pay-off disk rotation resistance applying device reach the upper limits of their respective adjustment ranges; The overhead line laying vehicle also includes: A wire pay-off reel moving device, connected to the wire pay-off reel, wherein the wire pay-off reel moving device is used to move the wire pay-off reel along the axial direction of the wire pay-off reel; A guide rod, wherein the guide rod is fixed between the pay-off drum and the tension machine, and the length direction of the guide rod is consistent with the axial direction of the pay-off drum; A guide rope wheel is sleeved on the outer circumference of the guide rod, and the guide rope wheel can move along the length direction of the guide rod; Among them, the outgoing wire of the pay-off drum enters the tension machine through the lower wheel surface of the guide rope wheel to control the incoming wire height of the contact wire in the tension machine; the pay-off drum can move along the axial direction of the pay-off drum so that the outgoing wire position of the pay-off drum is close to the incoming wire position of the tension machine.

2. The overhead wire pay-off vehicle according to claim 1, characterized in that: The lower end of the side guide device is provided with a side guide wheel; The side guide wheel is used to roll on the side of the track plate of the track to guide the overhead wire pay-off vehicle in the longitudinal direction; The longitudinal direction is the length direction of the track.

3. The overhead wire pay-off vehicle according to claim 2, characterized in that: There are two pairs of side guide devices, and each pair of side guide devices is symmetrically installed on both sides of the frame; One pair of side guide devices is arranged at a position one quarter of the distance from the head of the frame, and the other pair of side guide devices is arranged at a position three quarters of the distance from the head of the frame.

4. The overhead wire pay-off vehicle according to claim 3, characterized in that: Also includes: A vertical guide device is installed below the frame, and the vertical guide device can be extended and retracted downward in the vertical direction; The bottom end of the vertical guide device is provided with a vertical guide wheel, and the vertical guide wheel is used to press on the rail of the track to guide the contact network pay-off vehicle in the longitudinal direction.

5. The overhead wire pay-off vehicle according to claim 4, characterized in that: The control unit is also used for: According to the displacement of the guide rope wheel along the guide rod away from the reference position, the pay-off drum is controlled to move in the same direction along the axial direction of the pay-off drum, so that the outlet position of the pay-off drum is close to the inlet position of the tension machine.

6. The overhead wire pay-off vehicle according to claim 5, characterized in that: Also includes: A wire tension sensor for the wire pay-off reel is connected to the control unit for communication and is arranged at the wire outlet position of the wire pay-off reel, and is used to obtain the actual tension value of the wire outlet of the wire pay-off reel and transmit it to the control unit; A tension sensor for the outlet wire of the tension machine, which is in communication connection with the control unit and is arranged at the outlet wire position of the tension machine, and is used to obtain the actual tension value of the outlet wire of the tension machine and transmit it to the control unit; A guide rope wheel distance sensor is connected to the control unit for communication, is arranged on the guide rope wheel, and is used to obtain the distance of the guide rope wheel from the preset position of the guide rope wheel on the guide rod, and transmit it to the control unit; The vehicle speed sensor is fixed on the vehicle frame and is used to sense the speed of the vehicle speed sensor.

7. The overhead wire pay-off vehicle according to claim 5, characterized in that: Also includes: A lifting column, wherein the lifting column is fixed on the frame, and the pay-off drum is located between the lifting column and the tension machine; A lifting power device, which is used to provide lifting power for the lifting column; The jacking column is used to jack up the contact wire of the tension machine, and the jacking column can be raised and lowered to adapt to the height of the contact network.

8. The overhead wire pay-off vehicle according to claim 3, characterized in that: The overhead wire laying vehicle also includes: Two tension disk driving devices, one tension disk driving device corresponds to one tension disk, and the tension disk driving device is used to provide power for the rotation of the tension disk; The pay-off drum moving device, the tension drum moving device, and the lifting power device respectively use hydraulic cylinders; The pay-off reel clamp and the tension reel clamp are hydraulic clamps.

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