LU502201B1 - Modular constant tension pay-off vehicle - Google Patents

Modular constant tension pay-off vehicle Download PDF

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Publication number
LU502201B1
LU502201B1 LU502201A LU502201A LU502201B1 LU 502201 B1 LU502201 B1 LU 502201B1 LU 502201 A LU502201 A LU 502201A LU 502201 A LU502201 A LU 502201A LU 502201 B1 LU502201 B1 LU 502201B1
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LU
Luxembourg
Prior art keywords
oil
hydraulic
guiding
tension
pay
Prior art date
Application number
LU502201A
Other languages
German (de)
Other versions
LU502201A1 (en
Inventor
Tong Liu
Jianguo Xu
Yue Gao
Chenyan Zhou
Jie Chen
Botao Zhang
Junbo Miao
Zengtang Ren
Jianfeng Li
Lixin Tang
Da Cui
Yingjie Yuan
Original Assignee
Shijiazhuang Machinery And Equipment Branch Of China Railway Electrification Bureau Group Co Ltd
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Application filed by Shijiazhuang Machinery And Equipment Branch Of China Railway Electrification Bureau Group Co Ltd filed Critical Shijiazhuang Machinery And Equipment Branch Of China Railway Electrification Bureau Group Co Ltd
Publication of LU502201A1 publication Critical patent/LU502201A1/en
Application granted granted Critical
Publication of LU502201B1 publication Critical patent/LU502201B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
    • B65H49/18—Methods or apparatus in which packages rotate
    • B65H49/34—Arrangements for effecting positive rotation of packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/12—Trolley lines; Accessories therefor
    • B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
    • B60M1/22—Separate lines from which power lines are suspended, e.g. catenary lines, supporting-lines under tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/12—Trolley lines; Accessories therefor
    • B60M1/28—Manufacturing or repairing trolley lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
    • B65H49/18—Methods or apparatus in which packages rotate
    • B65H49/20—Package-supporting devices
    • B65H49/30—Swifts or skein holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
    • B65H49/18—Methods or apparatus in which packages rotate
    • B65H49/20—Package-supporting devices
    • B65H49/32—Stands or frameworks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
    • B65H49/38—Skips, cages, racks, or containers, adapted solely for the transport or storage of bobbins, cops, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/28—Reciprocating or oscillating guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/005—Means compensating the yarn tension in relation with its moving due to traversing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/02—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package
    • B65H59/04—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package by devices acting on package or support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
    • B65H59/381—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension using pneumatic or hydraulic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/40—Applications of tension indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/35—Ropes, lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/36—Wires

Abstract

A modular constant tension pay-off vehicle, comprising winding devices (5), a guide device (9), a tension applying device (12), a line post (20), and a control device which are fixedly provided on a rail flat car (13) and through which an overhead contact line (10) passes in sequence. Slide rail devices (8) and hydraulic oil cylinders (14) used for enabling supports (1) to move along the slide rail devices (8) are fixedly provided on the rail flat car (13). Hydraulic motors (17) are fixedly provided on the supports (1). When the hydraulic motors (17) provide tension for the winding devices (5), the direction of force application is opposite to the pay-off direction of the winding devices (5). The control device comprises a generating set (25) and a hydraulic control assembly. The hydraulic control assembly comprises a signal control assembly, and an oil storage device (22), a hydraulic oil pump, and an integrated valve group (26) connected in sequence.

Description

Modular Constant Tension Pay-Off Vehicle LU502201 Technical Field The present invention belongs to the technical field of railway support and erection, and relates to an overhead contact line pay-off vehicle, in particular to a modular constant tension pay-off vehicle. Background Art During the construction or maintenance of an electrified railway, the tension of overhead contact lines in the overhead lines plays an extremely important role in maintaining the spatial form of overhead lines. The overhead contact line refers to a contact wire and a carrier cable erected over the railway line. During the construction, the overhead contact line must be erected on the cantilevers of poles of the contact lines and kept in a certain tension. When erecting the overhead contact line, the overhead contact line 1s erected by means of a catenary working vehicle. Since the overhead contact line needs to be wound on a pay-off reel before it is erected, the overhead contact line will become curved and has a radian. Consequently, the overhead contact line has intermittent ripples owing to the existence of the radian of the overhead contact line, resulting in arc discharge, which may cause damages to the electric locomotive and pose potential safety hazards. Therefore, the overhead contact line released from the pay-off reel must be tensioned by means of a tension applying device, i.e., the overhead contact line must be straightened, in order to ensure the safety of power transmission.
The pay-off vehicles in the prior art have the following structural defects: I In the prior art, the overhead contact line enters a tension applying device after being released from winding device. Both the winding device and the tension applying device are fixed on a rail flat car and are immovable, and the winding device is wide, with a certain distance between the two edges thereof. Therefore, the overhead contact line at either edge of the winding device can't be aligned to the tension applying device when the overhead contact line is being released. After the overhead contact line is released, the overhead contact line between the winding device and the tension applying device will have a certain inclination angle, and the overhead contact line can't enter the tension applying device vertically, causing serious friction between the overhead contact lines, reducing the quality of the overhead contact line, and resulting a safety hazard.
II. The winding device in the prior art only relies on the pulling force generated by the tension applying device to rotate before it enters the tension applying device, because the rotating shaft has no resistance other than the resistance of its own weight when it rotates; as the overhead contact line is released from the winding device, the weight of the winding device is reduced gradually, and the rotation resistance of the winding device itself becomes smaller and smaller; as a result, the rotation and the paying-off becomes so fast that the tension of the overhead contact line between the winding device and the tension applying device becomes smaller and smaller, which means that the overhead contact line wound onto the tension applying device becomes loose gradually; consequently, the overhead contact line exiting the tension applying device often comes into contact with the ground or the steel rail owing to inadequate tension, 1]
thereby the stability and elasticity of the structure of overhead lines are decreased severely. A mechanical means, such as a stick or clutch, is usually used to cause the rotating shaft fy 502201 generate resistance during paying-off in the prior art. However, in such an approach, only small tension is produced on the overhead contact line and the tension can't be monitored and regulated in real time according to the actual situation, and the tension can't be maintained constant.
III. The supports in the prior art have a complex structure. The entire supports need to be removed before installing the winding device, which is time-consuming and labor-intensive, and the manufacturing cost is high. In addition, various structures for paying-off in the prior art are not only complex in structure and large in size; moreover, once the vehicle body or any paying-off structure is damaged, the entire paying-off device has to be repaired. The reparation work is time-consuming and labor-intensive, and causes an increased reparation cost.
The control system of the pay-off vehicle in the prior art has the following defects: The electro-hydraulic control system applied to the home-made constant-tension pay-off vehicles is still immature, which has a high engine power, a large pollutant emission, a large overall size, and various failures are prone to occurring during the operation. For example, the main control motor in the hydraulic control assembly usually drives multiple hydraulic oil pumps indirectly via a transfer case, and once the transfer case as a power transmission hub is damaged, the entire vehicle will not work; moreover, the layout of the control valves and oil pipes in communication with the hydraulic oil pumps is complicated and messy; in the case of any failure, troubleshooting has to be carried out one by one for all possible failure points before the reparation can be made accordingly, which is time-consuming and labor-intensive; furthermore, the pay-off vehicles that are widely used in China are imported from foreign countries; if a part of the pay-off vehicle is damaged, a replacement part has to be purchased from the original manufacturer, resulting in time waste and a high reparation cost.
In summary, it is an urgent task to develop a home-made pay-off vehicle that is smart, has an exquisite structure and constant tension, can be adjusted automatically, and has a perfect control system.
Summary of the Invention In order to overcome the above drawbacks existing in the prior art, the present invention aims to provide a modular constant tension pay-off vehicle, so as to achieve the objects of constant tension of the overhead contact line in the paying-off process, automatic tension adjustment, ensured tightness of the overhead contact line wound on a winding device, automatic alignment of a tension applying device, a simple and perfect control system, and size reduction.
To attain the objects described above, the present invention employs the following technical solution: A modular constant tension pay-off vehicle, comprising a pay-off device, a tension applying device, a wire guiding column and a control device, which are fixedly arranged on a rail flat car and through which an overhead contact line passes sequentially, wherein the pay-off device comprises supports, a rotating shaft rotatably connected to the supports, and a winding device fixedly arranged 2e on the rotating shaft for winding the overhead contact line, the rail flat car is fixedly provided with a sliding rail device and a hydraulic oil cylinder for moving the supports along the sliding rail device 202201 a hydraulic motor for driving the rotating shaft to rotate and providing tension force for the winding device is fixedly arranged on the supports, and the force applying direction applied by the hydraulic motor to provide tension force for the winding device is opposite to the paying-off direction of the winding device; and further comprising a guiding device for detecting the position of the overhead contact line and providing an action signal for the hydraulic oil cylinder; wherein the control device comprises a power generating set and a hydraulic control assembly; the hydraulic control assembly comprises a signal control assembly; and an oil storage device, at least one hydraulic oil pump and an integrated valve group, which are connected sequentially; wherein the hydraulic oil pump is driven by a main control motor; the integrated valve group is connected respectively to the hydraulic motor, the hydraulic oil cylinder, and a second hydraulic motor in the tension applying device through pipelines; and the power generating set is electrically connected to the main control motor and the signal control assembly through a power distribution cabinet respectively. As a definition to the present invention: the top of the supports is detachably provided with bearing seats, each of the bearing seats comprises an upper part and a lower part, the upper part and the lower part are in snap-fit with each other, and the rotating shaft is rotatably connected to the bearing seats via bearings. As another definition to the present invention: the sliding rail device comprises two U-steels arranged in parallel, bearing rollers fixedly arranged on the two sides of the supports, and limit blocks fixedly arranged on the two sides of the supports and configured for guiding the bearing rollers, wherein the bearing rollers are arranged in the U-steels and move in the length direction of the U-steels, and the limit blocks are in contact with the inner side surfaces of the U-steels and are in sliding fit with the inner side surfaces of the U-steels by means of a lubricant. As a further definition to the present invention: the rail flat car is further fixedly provided with guiding oil pipes, each of the guiding oil pipes comprises an oil pipe fixedly arranged on the rail flat car and an oil casing sleeved on the oil pipe, wherein the part of the oil pipe inside the oil casing is provided with an oil hole, and the oil casing is fixedly provided with a pipeline for supplying oil to the hydraulic motors; there are two guiding oil pipes for oil input to the hydraulic motors and oil output from the hydraulic motors, and the outer wall of the oil casing is fixedly connected to the supports and moves along the oil pipe. As a third definition to the present invention: a driving gear is fixedly arranged on an output shaft of the hydraulic motors, and a driven gear meshed with the driving gear is fixedly arranged on the rotating shaft. As a still further definition to the present invention: the guiding device comprises a guide rail, a guiding mechanism that is slidably connected to the guide rail via a sliding block and configured for the overhead contact line to pass through, and a photoelectric sensor configured for detecting the position of the guiding mechanism, wherein the guiding mechanism comprises at least two first reel
3.
guiding wheels arranged horizontally and at least two second reel guiding wheels arranged vertically. LU502201 As a yet still further definition to the present invention: both the first reel guiding wheels and the second reel guiding wheels are rotatably connected to the guiding mechanism. As a fourth definition to the present invention: the integrated valve group comprises a plurality of electro-hydraulic proportional valves, and an overflow valve and a three-position four-way functional valve that are in communication with oil outlets of the electro-hydraulic proportional valves; control ends of the electro-hydraulic proportional valve are electrically connected to the signal control assembly, and the three-position four-way functional valve is connected to the hydraulic motor, the hydraulic oil cylinder and the hydraulic motor in the tension applying device through an oil pipe respectively.
As another definition to the present invention: the signal control assembly comprises a signal sensor, an A/D converter module, a PLC control module and a D/A converter module that are electrically connected sequentially; and the signal sensor comprises a photoelectric sensor arranged below a guide base of the overhead contact line, an oil pressure sensor arranged at the oil outlet of the overflow valve and a tension sensor arranged on a tension disk.
With the technical solution described above, the present invention achieves the following beneficial effects over the prior art: (1) The rotating shaft in the present invention is driven by a hydraulic motor. During the paying- off process, the hydraulic motor increases the tension of the overhead contact line in the paying-off process by applying a force opposite to the paying-off direction of the winding device to the rotating shaft, thereby automatic adjustment of the tension of the overhead contact line is realized and the tension is kept constant, and the quality of the erected overhead contact line is improved; in addition, the overhead contact line released from the winding device passes through a guiding device and enters into a tension applying device, when the paying-off reaches either edge of the winding device, the guiding device moves to the sides along the overhead contact line and detects and determines the position of the overhead contact line, so that the hydraulic oil cylinder drives the supports to move to the left or the right along the sliding rail device, thereby the overhead contact line outputted from the winding device can be quickly and automatically aligned to the tension applying device before the overhead contact line enters into the tension applying device; thus, constant tension of the overhead contact line is ensured, the quality of the overhead contact line is improved, and the level of automation is high; moreover, in the control device part of the present invention, the engine in the prior art is replaced with a power generating set, thereby not only the energy is saved and the emission of waste gas is reduced, but also a modular independent paying-off is formed, the device size and space occupation are reduced, and the transportation is convenient; the control device in the present invention is an independently developed homemade device, the power generating set supplies power to the main control motor through a power distribution cabinet, and then the main control motor directly drives the hydraulic oil pump; thus, the power input structure of the hydraulic oil pump is changed from the original transfer case control to electric control, and a problem that the entire vehicle can't work owing to the damage of the transfer 4 case or the hydraulic oil pump is avoided; if the parts are damaged, they are easily available by purchasing in the market, and the replacement is highly versatile, which reduces the reparatioïr 502201 cost; since an integrated valve group is used to control the oil circuit in the control system, the original complicated and disordered control valves and pipelines are integrated, the arrangement of the pipelines and control valves in the oil circuit is simplified, and the maintenance is simpler and more convenient after failure.
(2) The top of the supports in the present invention is provided with bearing seats that are detachably arranged, the rotating shaft is rotatably connected to the bearing seats, and each of the bearing seats is divided into an upper part and a lower part that can be disassembled; when installing the pay-off device, the upper part of each bearing seat can be directly disassembled, the rotating shaft can be removed, the pay-off device can be led through the rotating shaft, and then the rotating shaft can be placed on the bearing seats, then each upper part can be snapped to the corresponding lower part respectively to complete the installation; thus, the installation and disassembly of the pay-off device are simple and convenient, and the time required for installing the pay-off device can be saved.
(3) Bearing rollers are arranged on the supports in the present invention and can move linearly along the U-steels; thus, not only the stability of rotation of the supports is ensured, but also the structure is simplified; limit blocks are fixed on the two sides of the supports, and the side surfaces of the limit blocks are in contact with the inner side surfaces of the U-steels via a lubricant, so that the supports can be firmly clamped in the U-steels by means of the limit blocks to make sure the movement track of the bearing rollers follows the U-steels, and prevent any deviation from the route of the bearing rollers; besides, a lubricant is applied between the limit blocks and the inner side surface of the U-steels, thereby the sliding friction is reduced, the noise is reduced and the failure rate is decreased effectively.
(4) The guiding oil pipe in the present invention not only provides a guiding function for the supports, but also enables the pipeline for supplying oil to the hydraulic motors to move with the oil casing; thus, oil supply in the form of a dragged chain is avoided, and the service life of the pipeline is prolonged.
(5) A driving gear is arranged on the output shaft of the hydraulic motor in the present invention, and meshes with the driven gear on the rotating shaft to cause the rotating shaft to rotate, so that the torsional stress of the rotating shaft is effectively reduced, and the torsional force is dispersed to the gear with greater diameter, thereby damages to the hydraulic motors or the rotating shaft incurred by excessive mass of the winding device can be prevented, and the service life of the device is effectively prolonged.
(6) The guiding mechanism in the present invention is slidably connected to the guide rail, and the overhead contact line is located between a first reel guiding wheel and a second reel guiding wheel, so that the guiding mechanism can move with the position of the overhead contact line; the photoelectric sensor judges the position of the overhead contact line on the winding device by detecting the position of the guiding mechanism; thus, the movable device is controlled to act by the control device, and the position of the winding device on the supports is adjusted to be aligned with the tension applying device; the structure is simple and the detection is
5.
accurate. LU502201 (7) Both the first reel guiding wheel and the second reel guiding wheel in the present invention are rotatably connected to the guiding mechanism, so that the sliding friction between the overhead contact line and the two guiding wheels 1s changed into rolling friction, thereby damages to the guiding mechanism and the overhead contact line are prevented.
(8) A plurality of valve seats in the present invention act and adjust together, thereby improve the synergistic effect, so that the control of each oil circuit in the control system is more precise and the actions are more accurate.
In summary, the present invention has a high level of automation, modularity, small size, can ensure constant tension, and can automatically adjust the tension according to the actual situation during the working process, ensures the quality of the paying-off, has long service life, convenient disassembly and assembly, stable guidance, energy saving and emission reduction, less environmental pollution, and is suitable for all catenary pay-off vehicles.
Brief Description of Drawings Hereunder the present invention will be further detailed in specific embodiments, with reference to the accompanying drawings.
Fig. 11s a schematic front view of the structure of an embodiment of the present invention; Fig. 2 is a schematic perspective view of the structure of the device on a rail flat car 13 in an embodiment of the present invention; Fig. 3 is a schematic front view of the structure of a single pay-off device and a guiding device 9 in an embodiment of the present invention; Fig. 4 is a schematic top view of the structure of the single pay-off device and the guiding device 9 in an embodiment of the present invention; Fig. 5 is a schematic perspective view of the structure of the guiding device 9 in an embodiment of the present invention; Fig. 6 is a schematic structural diagram of the rotating direction of a winding device 5 and a hydraulic motor 17 in an embodiment of the present invention; Fig. 7 is a schematic structural diagram of a guiding oil pipe 7 in an embodiment of the present invention; Fig. 8 is a schematic control diagram of a control device in an embodiment of the present invention; Fig. 9 is a schematic control diagram of the hydraulic part in an embodiment of the present invention.
In the figures: 1- supports, 2- base, 3- bearing seat, 4- rotating shaft, 5- winding device, 6- second hydraulic motor, 7- guiding oil pipe, 71- oil pipe, 72- oil casing, 8 - sliding rail device, 81 - U-steel, 82 - bearing roller, 83 - limit block, 9 - guiding device, 90 - guiding rail fixing plate, 91 - first guide rail, 92 - second guide rail, 93 - sliding block, 94 - bottom plate, 95 - vertical plate, 96 - top plate, 6°
97- first reel guiding wheel, 98 - second reel guiding wheel, 99 - photoelectric sensor, 10 - overhead contact line, 11 - rhombic plate, 12 - tension applying device, 13 - rail flat car, 14 - hydraulic ai 902201 cylinder, 15 - oil hole, 16 - pipeline, 17 - hydraulic motor, 18 - driving gear, 19 - driven gear, 20 - wire guiding column, 21 - electro-hydraulic proportional valve, 22 - oil storage device, 23 - oil pressure sensor, 24 - tension sensor, 25 - power generating set, 26 - integrated valve group, 27 - power distribution cabinet. Embodiments Hereunder some preferred embodiments of the present invention will be detailed with reference to the accompanying drawings. It should be understood that the modular constant tension pay-off vehicle described herein is a preferred embodiment, which is only intended to illustrate and explain the present invention, but doesn't constitute any limitation to the present invention. Embodiment of modular constant tension pay-off vehicle This embodiment is shown in Figs. 1-9, a modular constant tension pay-off vehicle is provided, comprising support 1 fixed on a rail flat car 13, a rotating shaft 4 rotatably connected to the support 1, and a winding device 5 fixedly arranged on the rotating shaft 4 for winding an overhead contact line 10; wherein the support 1 is composed of two trapezoidal structures arranged in parallel, with a narrower upper part and a wider lower part, the lower parts are connected together by a welded base
2. The top of the support 1 is detachably provided with two bearing seats 3, the bearing seats 3 are arranged respectively on the two trapezoidal structures of the support 1 arranged in parallel, the rotating shaft 4 is rotatably connected to the bearing seats 3 via bearings, and two ends of the rotating shaft 4 are respectively arranged on the two bearing seats 3. The bearing seat 3 consists of an upper part and a lower part, the upper part and the lower part are in snap-fit with each other on the rotating shaft 4 and are fixedly connected by bolts so as to facilitate the disassembly and installation of the winding device 5 on the rotating shaft 4. The winding device 5 is a pay-off reel in the prior art, and a rhombic plate 11 is fixedly arranged on the rotating shaft 4, the rhombic plate 11 is located at either side of the pay-off reel and fixedly connected by bolts. The rail flat car 13 is also fixedly provided with a tension applying device 12, a guiding device 9 and a wire guiding column 20; the tension applying device 12 and the wire guiding column 20 are the ones from the prior art; wherein, after the overhead contact line 10 comes out of the winding device 5, it passes through the guiding device 9 into the tension applying device 12, and then is erected on cantilever of catenary poles via the wire guiding column 20. In this embodiment, the overhead contact line 10 to be erected may be a contact wire or a carrier cable. The rail flat car 13 is an existing device in the prior art, the rail flat car 13 moves forward, and the overhead contact line 10 is released backward. The rail flat car 13 is fixedly provided with a sliding rail device 8, the support 1 can move to the left or to the right on the sliding rail device 8, and the sliding rail device 8 comprises two U-steels 81, the U-steels 81 are arranged in parallel on the rail flat car 13, the opening directions of the two U- steels 81 are opposite to each other, and the length directions of the two U-steels 81 is consistent with the length direction of the rotating shaft 4. Four bearing rollers 82 are fixedly arranged on the two sides of the base 2 of the support 1 to support the support 1 and keep the support 1 more stable in the process of movement. Four limit blocks 83 are fixedly arranged at the four corners of the support 1, the side surfaces of the limit blocks 83 are in contact with the inner side surfaces of the
7.
U-steels 81, and the two are in a sliding fit by lubricant so as to reduce friction and noise; the lubricant in this embodiment is grease.
Those skilled in the art can understand that the bearing 502201 rollers 82 and the limit blocks 83 are both arranged in the U-steels 81 and move in the length direction of the U-steels 81. The bearing rollers 82 are in contact with the bottom surfaces of the U- steels 81 to cause the support 1 to move, and the limit blocks 83 are in contact with the inner side surfaces of the U-steels 81 to provide a guiding effect for the bearing rollers 82, so that the support 1 can only move along the inner wall of the groove of the U-steels 81 to prevent the movement track of the bearing rollers 82 from deviating from the U-steels 81. In this embodiment, a hydraulic oil cylinder 14 is fixedly arranged on the support 1, the cylinder barrel of the hydraulic oil cylinder 14 is fixedly connected to the base 2 of the support 1, and the piston rod of the hydraulic oil cylinder 14 is fixedly connected to the rail flat car 13. When the cylinder barrel of the hydraulic oil cylinder 14 moves along the piston rod, it can drive the support 1 to move in the length direction of the U-steels 81. Hydraulic motor 17 for driving the rotating shaft 4 to rotate is fixedly arranged on the support 1, a driving gear 18 is fixedly arranged on the output shaft of the hydraulic motor 17, and a driven gear 19 meshed with the driving gear 18 is fixedly arranged on the rotating shaft 4. The hydraulic motor 17 indirectly drives the rotating shaft 4 via the transmission gears to rotate, thereby the torsional stress of the rotating shaft 4 is reduced, and the torsional stress on the rotating shaft 4 is transferred to the driven gear 19 that has a greater diameter, and the service life of the rotating shaft 4 and the hydraulic motor 17 is prolonged.
During the paying-off process, the force applying direction by the hydraulic motor 17 is opposite to the paying-off direction of the winding device 5, 1.e., the rotation direction of the output shaft of the hydraulic motor 17 is opposite to that of the rotating shaft 4 during paying-off.
As shown in Fig. 6, the symbol 'a' represents the rotation direction of the winding device 5 and the symbol 'b' represents the rotation direction of the output shaft of the hydraulic motor 17, and the rotating shaft 4 rotates with the pulling force produced by the tension applying device 12. The overhead contact line 10 can be released successfully since the pulling force for pulling out the overhead contact line 10 is greater than the force exerted by the hydraulic motor 17 on the rotating shaft 4 in the reversed direction; in addition, tension is produced on the overhead contact line 10 between the winding device 5 and the tension applying device 12 since the rotation direction of the output shaft of the hydraulic motor 17 is opposite to the rotation direction of the rotating shaft 4 and force in the reversed direction 1s applied to the rotating shaft 4, and the tension is beneficial for the erection of the overhead contact line 10. The tension applying device 12 is provided with a tension sensor 24, which is configured to detect the tension on the overhead contact line 10 and feed a signal back to the control device, so that the rotation speed of the hydraulic motor 17 can be changed in real time to ensure that the tension on the overhead contact line 10 can be kept constant.
After the construction is completed, the hydraulic motor 17 is driven to rotate in the reversed direction, and it drives the winding device 5 to rotate in a direction opposite to the paying-off direction, so that the remaining overhead contact line 10 is wound on the winding device 5, the process is quick and simple.
Guiding oil pipes 7 for supplying oil to the hydraulic motor 17 are fixedly arranged on the support 1, and each guiding oil pipe 7 comprises an oil pipe 71 and an oil casing 72. Both ends of the oil pipe 71 are fixedly provided with supporting base, the supporting base is fixedly arranged on the ge rail flat car 13 to fix the two ends of the oil pipe 71. The oil casing 72 is sleeved on the oil pipe 71, and both ends of the oil casing 72 are hermetically connected to the oil pipe 71 in the same sealife 502201 manner as that of the hydraulic oil cylinder 14. The part of the oil pipe 71 inside the oil casing 72 is provided with an oil hole 15, and a pipeline 16 for supplying oil to the hydraulic motor 17 is fixedly arranged on the oil casing 72. The outer wall of the oil pipe 71 is fixedly connected to the support 1, so that the oil casing 72 moves with the support 1; the pipeline 16 passes through the base 2 of the support 1, a valve is provided on the base 2, and the pipeline 16 moves along with the support 1. There are two guiding oil pipes 7, which are configured for oil input to the hydraulic motor 17 and oil output from the hydraulic motor 17, and are located at the two sides of the hydraulic oil cylinder 14 respectively.
As shown in Fig. 7, when oil is inputted to the hydraulic motor 17, the hydraulic oil enters along the oil pipe 71 of one guiding oil pipe 7, enters the oil casing 72 through the oil hole 15, fills the oil casing 72, and then enters the hydraulic motor 17 through the pipeline 16 to supply oil to the hydraulic motor 17. When oil is discharged from the hydraulic motor 17, the oil is discharged from the oil pipe 71 of the other guiding oil pipe 7, both the oil casing 72 and the pipeline 16 can move along with the support to avoid the form of a dragged chain, thereby the pipeline 16 for oil supply will not be dragged, and the pipeline 16 is integral, convenient to move and has a long service life.
This embodiment further comprises a guiding device 9 for detecting the position of the overhead contact line 10 and providing an action signal for the hydraulic oil cylinder 14. The guiding device 9 comprises a guide rail, a guiding mechanism slidably connected to the guide rail via a sliding block 93, and photoelectric sensors 99 for detecting the position of the guiding mechanism.
The guide rail comprises a first guide rail 91 and a second guide rail 92, both of the first guide rail 91 and the second guide rail 92 are slidably connected with a sliding block 93. Both ends of the first guide rail 91 and the second guide rail 92 are provided with a guide rail fixing plate 90 mounted by bolts, and the guide rail fixing plates 90 are fixedly mounted on the rail flat car 13, so that the first guide rail 91 and the second guide rail 92 are higher than the rail flat car 13 and adapt to the height of the overhead contact line 10. Each sliding block 93 is fixedly provided with a guiding mechanism, the guiding mechanism comprises a bottom plate 94 fixedly arranged on the sliding block 93, a vertical plate 95 fixedly arranged on the bottom plate 94, and a top plate 96 fixedly arranged at the end of the vertical plate 95 that is not connected to the bottom plate 94; two first reel guiding wheels 97 are rotatably connected between the two vertical plates 95 horizontally, three second reel guiding wheels 98 are rotatably connected between the bottom plate 94 and the top plate 96 vertically, the first reel guiding wheels 97 and the second reel guiding wheels 98 are arranged in two rows in the front-back direction, so that the overhead contact line 10 passes through the clearance between the two rows.
The photoelectric sensors 99 are fixedly arranged between the first guide rail 91 and the second guide rail 92 and configured to detect the position of the guiding device 9. When the pay-off position of the overhead contact line 10 is at an edge of the winding device 5 and can't be aligned to the tension applying device 12, the guiding mechanism will move along with the overhead contact line 10 to the edge position.
The photoelectric sensors 99 determines whether the support 1 should be moved to the left or to the right by detecting the position of the guiding mechanism, so that the pay-off position of the overhead contact line 10 is aligned to the tension applying device 12. There 9e are two photoelectric sensors 99, the two photoelectric sensors 99 are arranged sequentially along the length direction of the first guide rail 91, and there is a certain distance between the two 502201 photoelectric sensors 99. The photoelectric sensors 99 transmit the collected position information of the guiding mechanism to the control device, and the control device controls the hydraulic oil cylinder 14 to drive the support 1 to move correspondingly. The control device comprises a power generating set 25 and a hydraulic control assembly. The hydraulic control assembly is configured to control the flow and pressure of the hydraulic oil in a hydraulic actuator assembly (the hydraulic motor 17, the hydraulic oil cylinder 14, the guiding oil pipe 7 and a second hydraulic motor 6 in tension applying device 12), so as to adjust the hydraulic energy that can be converted by the hydraulic motor 17, the hydraulic oil cylinder 14, the guiding oil pipe 7 and the second hydraulic motor 6 in the tension applying device 12. The hydraulic control assembly comprises a signal control assembly, and an oil storage device 22, a hydraulic oil pump and an integrated valve group 26 that are connected sequentially. As shown in Fig. 8, the power generating set 25 is electrically connected to the main control motor through a power distribution cabinet 27 to supply power to the main control motor; the main control motor directly drives the hydraulic oil pump to provide power to the hydraulic oil pump, so that the hydraulic oil pump pumps the hydraulic oil in the oil storage device 22 to the corresponding hydraulic actuator assembly. By controlling the amount of the hydraulic oil in the hydraulic actuator assembly, the hydraulic energy is converted into mechanical energy to provide power to the hydraulic actuator assembly. The hydraulic oil pump is the power source of the entire hydraulic system and can meet the requirement of the hydraulic system for pressure and flow. Wherein, an oil inlet of the hydraulic oil pump is in communication with the oil storage device 22, and an oil outlet of the hydraulic oil pump is in communication with the hydraulic motor 17, the hydraulic oil cylinder 14, the guiding oil pipe 7 and the second hydraulic motor 6 in the tension applying device 12 through the integrated valve group 26 and an oil circuit respectively, so as to provide corresponding hydraulic energy for the hydraulic actuator assemblies. Since there are many hydraulic actuator assemblies in the entire hydraulic system, in order to properly decrease the working load of the hydraulic control assemblies and avoid damages to the device, in this embodiment, three main control motors and five hydraulic oil pumps are provided. The integrated valve group 26 is arranged in the pipelines between the hydraulic oil pump and the hydraulic actuator assemblies for controlling the flow and pressure of the hydraulic oil in the pipelines. As shown in Fig. 9, the integrated valve group 26 comprises a plurality of electro- hydraulic proportional valves 21, and an overflow valve and a three-position four-way functional valve that are in communication with oil outlets of the electro-hydraulic proportional valves 21; wherein, a control end of the electro-hydraulic proportional valve 21 is electrically connected to the signal control assembly, and the oil outlets of the three-position four-way functional valve are in communication with the hydraulic motor 17, the hydraulic oil cylinder 14, the guiding oil pipe 7 and the second hydraulic motor 6 in the tension applying device 12 respectively, and the overflow valve is configured to control the overall pressure in the hydraulic system. The arrangement of the integrated valve group 26 can reduce the use of pipelines in the oil circuit, and the overall structure is simple and clear, and the oil circuit controlled by each electro-hydraulic proportional valve 21 can be clearly displayed, and troubleshooting and reparation can be carried out simply and quickly in case of any failure.
«10 +
The signal control assembly detects and controls the flow and pressure of the oil in each oil circuit in the hydraulic system in real time, so as to adjust the tension applied on the overhead contact lin 502201
10. The signal control assembly comprises signal sensors, an A/D converter module, a PLC control module and a D/A converter module, which are electrically connected sequentially. During the operation, the signal sensor converts the analog signal into a digital signal via the A/D converter module, and then transmits the digital signal to the PLC control module, after the PLC control module performs internal program calculation, the calculation result is converted into an analog signal via the D/A converter module, the analog signal is fed back to the corresponding electro- hydraulic proportional valve 21 through a signal amplifier, so as to control the flow and pressure of the hydraulic oil in the oil circuit by means of the electro-hydraulic proportional valve 21. The signal sensors mainly include photoelectric sensors 99, oil pressure sensor 23 and tension sensor 24. The photoelectric sensors are arranged below the guiding device 9 and configured to detect the position where the guiding device 9 is driven by the overhead contact line 10 to move; the oil pressure sensor 23 is located at the oil outlet of the overflow valve and is configured to detect the flow and pressure of the hydraulic oil in each oil circuit; the tension sensor 24 is arranged on the tension applying device 12 and configured to detect the tension on the erected overhead contact line 10, so that the rotating speed of the hydraulic motor 17 can be adjusted and keep the tension on the overhead contact line 10 constant. In this embodiment, there are four sets of pay-off devices on the rail flat car 13. Therefore, this embodiment comprises four second hydraulic motors 6 and four hydraulic oil cylinders 14 to control the actions of each pay-off device respectively. In order to better drive the tension applying device 12 and ensure that the tension applying device 12 can apply enough tension on the overhead contact line 10, a second hydraulic motor 6 is provided on the two sides of the tension applying device 12 respectively. The working principle of this embodiment is as follows: when the device provided by the present invention is used to release an overhead contact line 10, the rail flat car 13 moves forward to release the overhead contact line 10, while the hydraulic motor 17 exerts force in the opposite direction on the rotating shaft 4, so that the overhead contact line 10 outputted from the winding device 5 has certain tension, after the overhead contact line 10 is released from the winding device 5, it enters the clearance between the first reel guiding wheel 97 and the second reel guiding wheel 98 of the guiding mechanism, and then enters the tension applying device 12; when the pay-off position of the overhead contact line 10 is at either edge of the winding device 5, the overhead contact line 10 will have a certain angle with respect to the tension applying device 12. When the angle reaches a certain degree, the overhead contact line 10 will drive the guiding mechanism to move to a position above the photoelectric sensor 99. The photoelectric sensor 99 collects the position information of the guiding mechanism and transmits the connected information to the control device, the control device controls the amount of oil input or oil discharge of each oil circuit, to make the hydraulic oil cylinder 14 and the guiding oil pipe 7 move correspondingly, and the edge of the support 1 moves in a direction for aligning with the tension applying device 12, and finally, the overhead contact line released from the winding device 5 is aligned to the tension applying device 12, so as to ensure the quality of the erected overhead contact line 10. At the same time, the tension sensor 24 on the tension applying device 12 detects the tension on the overhead contact line 10 and feeds it back to «11 the control device, so that the hydraulic motor 17 automatically adjust the rotation speed to ensure the constant tension LU502201 It should be noted: the embodiments described above are only some preferred embodiments of the present invention, and should not be deemed as constituting any limitation to the present invention.
Though the present invention is described and illustrated in detail with reference to the embodiments, those skilled in the art can still make modifications to the technical solutions described above in the embodiments or make equivalent replacement of some technical features.
Any modification, equivalent replacement, or improvement made to the embodiments without departing from the spirit and the principle of the present invention shall be deemed as falling into the scope of protection of the present invention. «12.

Claims (9)

Claims LU502201
1. A modular constant tension pay-off vehicle, comprising a pay-off device, a tension applying device, a wire guiding column and a control device, which are fixedly arranged on a rail flat car and through which an overhead contact line passes sequentially, wherein the pay-off device comprises a support, a rotating shaft rotatably connected to the support, and a winding device fixedly arranged on the rotating shaft for winding the overhead contact line; wherein the rail flat car is fixedly provided with a sliding rail device and a hydraulic oil cylinder for moving the support along the sliding rail device, the support is fixedly provided with a hydraulic motor for driving the rotating shaft to rotate and providing tension for the winding device, and the force applying direction by the hydraulic motor when the hydraulic motor provides tension for the winding device is opposite to the paying-off direction of the winding device; and further comprising a guiding device for detecting the position of the overhead contact line and providing an action signal for the hydraulic oil cylinder; wherein the control device comprises a power generating set and a hydraulic control assembly; the hydraulic control assembly comprises a signal control assembly, and an oil storage device, at least one hydraulic oil pump and an integrated valve group, which are connected sequentially; wherein the hydraulic oil pump is driven by a main control motor; the integrated valve group is connected respectively to the hydraulic motor, the hydraulic oil cylinder, and a second hydraulic motor in the tension applying device through pipelines; and the power generating set is electrically connected to the main control motor and the signal control assembly through a power distribution cabinet respectively.
2. The modular constant tension pay-off vehicle according to claim 1, wherein the top of the support is detachably provided with bearing seats, each of the bearing seats comprises an upper part and a lower part, the upper part and the lower part are snapped to each other, and the rotating shaft is rotatably connected to the bearing seats via bearings.
3. The modular constant tension pay-off vehicle according to claim 1 or 2, wherein the sliding rail device comprises two U-steels arranged in parallel, bearing rollers fixedly arranged on the two sides of the support, and limit blocks fixedly arranged on the two sides of the support and configured for guiding the bearing rollers, wherein the bearing rollers are arranged in the U- steels and move in the length direction of the U-steels, and the limit blocks are in contact with the inner side surfaces of the U-steels and are in sliding fit with the inner side surfaces of the U-steels by means of a lubricant.
4. The modular constant tension pay-off vehicle according to claim 3, wherein the rail flat car is further fixedly provided with guiding oil pipes, each of the guiding oil pipes comprises an oil pipe fixedly arranged on the rail flat car and an oil casing sleeved on the oil pipe, wherein the part of the oil pipe inside the oil casing is provided with an oil hole, and the oil casing is fixedly provided with a pipeline for supplying oil to the hydraulic motors; there are two guiding oil pipes for oil input to the hydraulic motors and oil output from the hydraulic motors, and the outer wall of the oil casing is fixedly 1 connected to the support and moves along the oil pipe. LUS0O2204
5. The modular constant tension pay-off vehicle according to any of claims 1, 2 and 4, wherein a driving gear is fixedly arranged on an output shaft of the hydraulic motor, and a driven gear meshed with the driving gear is fixedly arranged on the rotating shaft.
6. The modular constant tension pay-off vehicle according to claim 5, wherein the guiding device comprises a guide rail, a guiding mechanism that is slidably connected to the guide rail via a sliding block and configured for the overhead contact line to pass through, and a photoelectric sensor configured for detecting the position of the guiding mechanism, wherein the guiding mechanism comprises at least two first reel guiding wheels arranged horizontally and at least two second reel guiding wheels arranged vertically.
7. The modular constant tension pay-off vehicle according to claim 6, wherein both the first reel guiding wheels and the second reel guiding wheels are rotatably connected to the guiding mechanism.
8. The modular constant tension pay-off vehicle according to any of claims 1, 2, 4, 6 and 7, wherein the integrated valve group comprises a plurality of electro-hydraulic proportional valves, and an overflow valve and a three-position four-way functional valve that are in communication with oil outlets of the electro-hydraulic proportional valves; control ends of the electro-hydraulic proportional valve are electrically connected to the signal control assembly, and the three-position four-way functional valve is connected to the hydraulic motor, the hydraulic oil cylinder and the hydraulic motor in the tension applying device through an oil pipe respectively.
9. The modular constant tension pay-off vehicle according to claim 8, wherein the signal control assembly comprises a signal sensor, an A/D converter module, a PLC control module and a D/A converter module that are electrically connected sequentially; and the signal sensor comprises a photoelectric sensor arranged below a guiding base of the overhead contact line, an oil pressure sensor arranged at the oil outlet of the overflow valve and a tension sensor arranged on a tension disk.
2
LU502201A 2020-06-12 2021-07-28 Modular constant tension pay-off vehicle LU502201B1 (en)

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CN111532893A (en) * 2020-06-12 2020-08-14 中铁电气化局集团有限公司石家庄机械装备分公司 Constant tension wire barrow of contact net
CN113979188A (en) * 2021-11-03 2022-01-28 株洲菲斯罗克光电科技股份有限公司 Automatic alignment fiber-releasing device and method
CN114590635B (en) * 2022-03-15 2024-01-12 国网山东省电力公司惠民县供电公司 Pay-off device for laying power transmission line
CN114803723A (en) * 2022-04-15 2022-07-29 哈工大机器人（合肥）国际创新研究院 Cable winding and unwinding devices
CN117030437B (en) * 2023-08-24 2024-03-22 盐城市海成棉业有限公司 Cotton yarn strength detection device and detection method

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