WO2021249574A1 - Modular constant tension pay-off vehicle - Google Patents

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 car Technical field

The invention belongs to the technical field of railway support and erection, and relates to a catenary pay-off car, specifically a modular constant-tension pay-off car.

Background technique

During the construction or maintenance of electrified railways, the tension of the contact wires plays an extremely important role in maintaining the spatial form of the contact wires. The supporting wire is a contact wire and load-bearing cable erected on the railway line. During construction, the supporting wire needs to be erected on the wrist arm of the contact grid pole and maintain a certain tension. When erecting the supporting wire, the construction is carried out by the catenary operating vehicle. Because the supporting wire needs to be wound on the pay-off rack before erection, the supporting wire will bend and produce a curvature, and the existence of the supporting wire's own curvature will It produces intermittent ripples and forms an arc discharge, which will damage the electric locomotive and pose a safety hazard. Therefore, the supporting wire discharged from the winding frame needs to be tensioned by a tension applying device, that is, the supporting wire is straightened to ensure the safety of its power transmission.

The structural shortcomings of the pay-off car in the prior art:

1. The supporting wire in the prior art enters the tension applying device after coming out of the winding device, because the winding device and the tension applying device are fixed on the road flat car and cannot move, and the winding device is wider, and the two edges have A certain distance, so when paying off, the bearing wires at the two edges of the winding device cannot be aligned with the tension applying device. After the bearing wires are released, the bearing wires between the winding device and the tension applying device will have a certain tilt Angle, the supporting wire cannot enter the tension applying device vertically, causing serious abrasion between the supporting wires, reducing the quality of the supporting wires, and causing potential safety hazards;

2. Before the winding device in the prior art enters the tension applying device, because there is no resistance other than the resistance of its own weight when the rotating shaft rotates, it only relies on the pulling force generated by the tension applying device to rotate. The weight of the upper supporting wire is gradually reduced, and the rotation resistance of the winding device itself will become smaller and smaller, which will cause the phenomenon of too fast rotation and too fast payout, which will cause the wire between the winding device and the tension applying device The tension value is getting smaller and smaller, which means that the supporting wire wound on the tension applying device is gradually loosened, so that the supporting wire coming out of the tension applying device often contacts the ground and the rail due to insufficient tension, which seriously reduces the contact network structure For the stability and flexibility of the existing technology, mechanical methods such as sticks or clutches are usually used to generate resistance on the rotating shaft when paying off, but this method can only generate a small tension on the bearing wire and cannot perform real-time monitoring. And adjustment, and can not monitor and adjust the tension of the supporting wire in real time according to the actual situation, and can not keep the tension constant;

3. The structure of the bracket in the prior art is complicated. When installing the winding device, the entire bracket needs to be disassembled and installed, which is time-consuming and labor-intensive, and the production cost is relatively high. In addition, the various structures for paying out in the prior art are not only complicated in structure and too large in size, but once the car body or any structure of the pay out is damaged, it needs to be repaired as a whole, which is time-consuming and labor-intensive and increases the maintenance cost.

Disadvantages of the control system of the pay-off car in the prior art:

The electro-hydraulic control system applied on the domestic constant tension pay-off car is still immature, the engine power is large, the pollutant emission is high, the overall volume is large, and various failures are prone to occur during the working process. For example: the main control motor in the hydraulic control assembly generally drives multiple hydraulic oil pumps indirectly through the transfer case, and once the transfer case as the power transmission hub is damaged, the whole vehicle will be unable to work; the other one is connected to the hydraulic oil pump The wiring of control valves and oil pipes is complicated, cumbersome and disorganized. After a fault occurs, the fault must be checked one by one before the corresponding maintenance can be carried out, which is time-consuming and labor-intensive; moreover, the pay-off trucks used in my country are imported equipment from foreign countries. If a certain part is damaged, it needs to be purchased from the original manufacturer, which not only wastes time, but also high maintenance costs.

In summary, the development of a domestically made pay-off car that is intelligent, exquisite in structure, constant tension, capable of automatic adjustment, and complete control system is a problem to be solved.

Summary of the invention

In order to solve the above deficiencies in the prior art, the present invention aims to provide a modular constant tension pay-off car to achieve constant tension of the bearing wire during the pay-off process, automatically adjust the tension, and ensure that the wire is wound on the winding device. The compactness, the ability to automatically align the tension applying device, the concise and complete control system, and the purpose of size reduction.

In order to achieve the above objectives, the technical solutions adopted by the present invention are as follows:

A modular constant tension pay-off car includes a pay-off device fixed on a road flat car and a wire-carrying wire passing through in turn, a tension applying device, a wire post and a control device. The pay-off device includes a bracket and a rotating connection. A rotating shaft on the support, a winding device fixed on the rotating shaft for winding the bearing wire, a slide rail device and a hydraulic cylinder for moving the support along the slide rail device are fixed on the road flat car, so A hydraulic motor for driving the rotation of the shaft and providing tension for the winding device is fixed on the support, and the direction of force applied when the hydraulic motor provides tension for the winding device is opposite to the payout direction of the winding device;

It also includes a guiding device for detecting the position of the supporting wire and providing an action signal for the hydraulic cylinder;

The control device includes a generator set and a hydraulic control assembly; the hydraulic control assembly includes a signal control assembly and an oil storage device connected in sequence, at least one hydraulic oil pump, and an integrated valve group. The hydraulic oil pump is driven by a main control motor. The integrated valve group is respectively connected with the hydraulic motor, the hydraulic oil cylinder, and the second hydraulic motor in the tension applying device through pipelines, and the generator group is electrically connected with the main control motor and the signal control assembly through the power distribution cabinet.

As a limitation of the present invention: the top of the bracket is detachably provided with a bearing seat, the bearing seat includes two upper and lower parts buckled with each other, and the rotating shaft is rotatably connected to the bearing seat through a bearing.

As another limitation of the present invention: the slide rail device includes two U-shaped channel steels arranged in parallel, bearing rollers fixed on both sides of the bracket, and limit blocks fixed on both sides of the bracket to guide the bearing rollers, The bearing roller is arranged in the U-shaped channel steel and moves along the length direction of the U-shaped channel steel, and the stop block is in contact with the inner side surface of the U-shaped channel steel and is slidingly fitted with lubricant.

As a further limitation of the present invention: the road flat car is also fixedly provided with a guiding oil pipe, the guiding oil pipe includes an oil pipe fixed on the road flat car, an oil tube sleeved on the oil pipe, and the oil pipe is located The part of the oil barrel is provided with oil holes, and the oil barrel is fixedly provided with a pipeline for supplying oil to the hydraulic motor; the guide oil pipe is provided with two oil pipes for the oil inlet and outlet of the hydraulic motor. The outer wall is fixedly connected with the bracket and moves along the oil pipe.

As a third limitation of the present invention: the output shaft of the hydraulic motor is fixedly provided with a driving gear, and the rotating shaft is fixedly provided with a driven gear meshing with the driving gear.

As a further limitation of the present invention, the guide device includes a guide rail, a guide mechanism for carrying the wire to pass through through the sliding block and the guide rail, and a photoelectric sensor for detecting the position of the guide mechanism. The guide mechanism includes at least two A first wire reel guide wheel arranged horizontally and at least two second wire reel guide wheels arranged vertically.

As a further limitation of the present invention, the first and second wire reel guide wheels are both rotatably connected to the guide mechanism.

As a fourth limitation of the present invention: the integrated valve group includes a plurality of electro-hydraulic proportional valves, an overflow valve connected to the outlet of the electro-hydraulic proportional valve, and a three-position four-way functional valve; the electro-hydraulic proportional valve The control end of the device is electrically connected with the signal control assembly, and the three-position four-way functional valve is respectively connected with the hydraulic motor, the hydraulic oil cylinder, and the hydraulic motor in the tension applying device through the oil pipe.

As another limitation of the present invention: the signal control component includes a signal sensor, an A/D conversion module, a PLC control module, and a D/A conversion module that are electrically connected in sequence; The sensor, the oil pressure sensor arranged at the oil outlet of the overflow valve and the tension sensor arranged on the tension disc.

Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

(1) The rotating shaft of the present invention is driven by a hydraulic motor. When paying off, the hydraulic motor applies a force opposite to the winding device's pay-off direction to the rotating shaft to increase the tension of the bearing wire during the pay-off process and realize the automatic tension of the bearing wire Adjust and keep the tension constant to increase the quality of the supporting wire; and the supporting wire from the winding device passes through the guiding device and enters the tension applying device. Move sideways to detect and determine the position of the bearing wire, so that the hydraulic cylinder drives the bracket to move left and right along the guide rail device, so that the bearing wire output by the winding device can quickly and automatically align with the tension applying device before entering the tension applying device to ensure that The tension of the supporting wire is constant, the quality of the supporting wire is improved, and the degree of automation is high; in addition, the control device part of the present invention replaces the generator set with the engine in the original technology, which not only saves energy, reduces exhaust gas emissions, but also forms an autonomous discharge system. The modularization of the line reduces the size, saves space, and is convenient for transportation; the control device of the present invention is a domestically developed equipment independently developed. The generator set supplies power to the main control motor through the power distribution cabinet, and then the main control motor directly drives the hydraulic oil pump. The power input structure of the hydraulic oil pump is changed, and the original transfer case control is changed to an electronic control form, which avoids the problem that the transfer case or the hydraulic oil pump is damaged and the whole vehicle cannot work. If the parts are damaged, they are easy to buy in the market. The replacement has strong versatility and reduces maintenance costs; while the integrated valve block is used to control the oil circuit in the control system, and the original intricate and disorderly control valves and pipelines are integrated, which simplifies the pipelines and pipelines in the oil circuit. The arrangement of the control valve makes maintenance easier and more convenient after failure;

(2) The top of the bracket of the present invention is detachably provided with a bearing seat, and the rotating shaft is rotatably connected to the bearing seat. The bearing seat is divided into two detachable upper and lower parts. When the pay-off device is installed, the upper part of the bearing seat can be directly installed. Partly disassemble, take off the shaft, put the pay-off device through the shaft, and then put the shaft on the bearing seat, buckle the upper part to complete the installation, make the installation and disassembly of the pay-off device simple and convenient, and save the installation of the pay-off device time;

(3) The bracket of the present invention is equipped with bearing rollers and moves linearly along the U-shaped channel steel, which not only ensures the stability of the bracket rotation, but also simplifies the structure. The side surface is in contact with the inner surface of the U-shaped channel steel through lubricant, so that the bracket passes through the limit block and is firmly clamped in the U-shaped channel steel, which can ensure the movement track of the bearing rollers to move along the U-shaped channel steel and prevent the bearing rollers There is deviation in the route, and the limit block and the inner surface of the U-shaped channel steel are equipped with lubricant, which reduces the sliding friction, can effectively reduce the noise and reduce the failure rate;

(4) The guiding oil pipe of the present invention can not only play a guiding role on the support, but also make the pipe that supplies oil to the hydraulic motor move with the oil cylinder, avoid drag chain oil supply, and increase the service life of the pipe;

(5) The output shaft of the hydraulic motor of the present invention is provided with a driving gear, which meshes with the driven gear on the shaft to rotate the shaft, which can effectively reduce the torsional stress of the shaft, distribute the torsion force to the gear with a larger diameter, and prevent winding The quality of the line device is too large, which can damage the hydraulic motor or the rotating shaft, which can effectively increase the service life of the device;

(6) The guiding mechanism of the present invention is slidably connected to the guide rail, and the supporting wire is located between the first wire reel guide wheel and the second wire reel guide wheel, so that the guiding mechanism can move with the position of the supporting wire, and the photoelectric sensor passes through Detect the position of the guiding mechanism, determine the position of the bearing wire on the winding device, and adjust the position of the winding device on the bracket to align with the tension applying device through the control device to make the moving device move. The structure is simple and the detection is accurate;

(7) The first spool guide wheel and the second spool guide wheel of the present invention are both rotatably connected to the guide mechanism, so that the sliding friction between the bearing wire and the two is turned into rolling friction, and the damage to the bearing wire is prevented;

(8) The multiple valve seats of the present invention work together and adjust to increase the synergy, so that the control of each oil circuit in the control system is more precise and the action is more precise.

To sum up, the present invention has high degree of automation, modularity, and small size, which can ensure constant tension, and automatically adjust tension according to actual conditions during the working process to ensure the quality of the line, long service life, convenient disassembly and assembly, and stable orientation. , Energy saving and emission reduction, less pollution to the environment, suitable for all catenary pay-off vehicles.

Description of the drawings

The present invention will be described in further detail below in conjunction with the drawings and specific embodiments.

FIG. 1 is a schematic diagram of a front view of an embodiment of the present invention;

2 is a schematic diagram of the three-dimensional structure of the device on the road flat car 13 according to the embodiment of the present invention;

FIG. 3 is a schematic front view of the structure of a single pay-off device and a guide device 9 according to an embodiment of the present invention;

FIG. 4 is a schematic top view of a single pay-off device and a guide device 9 according to an embodiment of the present invention;

5 is a schematic diagram of the three-dimensional structure of the guiding device 9 according to the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of the rotation direction of the winding device 5 and the hydraulic motor 17 according to the embodiment of the present invention;

FIG. 7 is a schematic diagram of the structure of the guide oil pipe 7 according to the embodiment of the present invention;

Fig. 8 is a control principle diagram of the overall control device according to an embodiment of the present invention;

Fig. 9 is a control principle diagram of the hydraulic part in the embodiment of the present invention.

In the picture: 1- support, 2- base, 3- bearing seat, 4- shaft, 5- winding device, 6-second hydraulic motor, 7-guide tubing, 71- tubing, 72- tub, 8-slide Rail device, 81-U-shaped channel steel, 82-bearing roller, 83-limiting block, 9-guide device, 90-rail fixing plate, 91-first rail, 92-second rail, 93-slider, 94 -Bottom plate, 95-vertical plate, 96-top plate, 97-first spool guide wheel, 98-second spool guide wheel, 99-photoelectric sensor, 10-support wire, 11-diamond plate, 12-tension applying device , 13-way flat car, 14-hydraulic cylinder, 15-oil hole, 16-pipe, 17-hydraulic motor, 18-driving gear, 19-driven gear, 20-wire post, 21-electro-hydraulic proportional valve, 22-oil storage device, 23-oil pressure sensor, 24-tension sensor, 25-generator set, 26-integrated valve group, 27-distribution cabinet.

detailed description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the modular constant tension pay-off car described here is a preferred embodiment, which is only used to illustrate and explain the present invention, and does not constitute a limitation to the present invention.

Embodiment Modular constant tension pay-off car

In this embodiment, as shown in Figures 1 to 9, a modular constant tension pay-off car includes a bracket 1 fixed on the road flat car 13, a rotating shaft 4 rotatably connected to the bracket 1, and fixed on the rotating shaft 4. The winding device 5 for winding the supporting wire 10, the bracket 1 is composed of two parallel trapezoidal structures, the upper part is narrow and the lower part is wide, and the lower part is connected by a welded base 2 together. The top of the bracket 1 is detachably provided with two bearing seats 3, the bearing seats 3 are respectively arranged on two trapezoidal structures arranged in parallel on the bracket 1, the rotating shaft 4 is rotatably connected to the bearing seat 3 through bearings, The two ends of the rotating shaft 4 are respectively arranged on two bearing seats 3. The bearing housing 3 is an upper and lower part, which are buckled on the rotating shaft 4 with each other, and the two parts are fixedly connected by bolts, which facilitates the disassembly and assembly 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 diamond-shaped plate 11 is fixed on the rotating shaft 4, and the diamond-shaped plate 11 is located on either side of the pay-off reel and is fixedly connected by bolts. The road flat car 13 is also fixedly provided with a tension applying device 12, a guiding device 9 and a wire column 20. Both the tension applying device 12 and the wire column 20 adopt the existing technology. After 5 comes out, it enters the tension applying device 12 through the guide device 9, and then is erected on the wrist arm of the contact net pole through the wire post 20. The lead wire 10 to be erected in this embodiment may be a contact wire or a force wire. The road flat car 13 in this field is the prior art. The road flat car 13 moves forward, and the supporting wire 10 is laid out backward.

The road flat car 13 is fixedly provided with a slide rail device 8. The bracket 1 can move left and right on the slide rail device 8. The slide rail device 8 includes two U-shaped channel steels 81, and the U-shaped groove The steel 81 is arranged in parallel on the road flat car 13, the opening directions of the two U-shaped channel steel 81 are arranged oppositely, and the length direction is consistent with the length direction of the rotating shaft 4. Four bearing rollers 82 are fixed on both sides of the base 2 of the support 1 to support the support 1 and make it more stable during the movement. Four limit blocks are fixed on the four corners of the support 1 83. The side surface of the limit block 83 is in contact with the inner side surface of the U-shaped channel steel 81, and the two are slidingly fitted with lubricant to reduce friction and noise. The lubricant in this embodiment is butter. Those skilled in the art can understand that the bearing roller 82 and the limiting block 83 are both arranged in the U-shaped channel steel 81 and move along the length direction of the U-shaped channel steel 81. The bearing roller 82 and the U-shaped channel steel 81 The bottom surface of the channel steel 81 contacts to make the support 1 move. The stop block 83 contacts the inner surface of the U-shaped channel steel 81 to provide a guiding function for the bearing roller 82, so that the support 1 can only follow the U-shaped channel steel 81. The inner wall of the groove moves to prevent the movement path of the bearing roller 82 from deviating from the U-shaped channel steel 81.

The bracket 1 of this embodiment is fixedly provided with a hydraulic cylinder 14. The cylinder tube of the hydraulic cylinder 14 is fixedly connected with the base 2 of the bracket 1, and the piston rod of the hydraulic cylinder 14 is fixedly connected with the road flat car 13, when the hydraulic cylinder When the cylinder barrel of the oil cylinder 14 moves along the piston rod, it can drive the bracket 1 to move along the length direction of the U-shaped channel steel 81.

The support 1 is fixedly provided with a hydraulic motor 17 for driving the rotating shaft 4 to rotate, the output shaft of the hydraulic motor 17 is fixedly provided with a driving gear 18, and the rotating shaft 4 is fixedly provided with a driven gear engaged with the driving gear 18 The gear 19 is indirectly driven by the hydraulic motor 17 through the transmission gear to rotate the rotating shaft 4, which reduces the torsional stress of the rotating shaft 4, transfers the torsional stress on the rotating shaft 4 to the driven gear 19 with a larger diameter, and increases the rotating shaft 4 and hydraulic pressure. The service life of the motor 17. When paying off, the direction of applying force of the hydraulic motor 17 is opposite to that of the winding device 5, that is, the direction in which the output shaft of the hydraulic motor 17 rotates is opposite to the direction in which the rotating shaft 4 rotates when paying off, as shown in Figure 6 In the figure, a is the direction in which the winding device 5 rotates, and b is the direction in which the output shaft of the hydraulic motor 17 rotates. The rotating shaft 4 rotates with the pulling force generated by the tension applying device 12. Because the pulling force of the lead wire 10 is greater than the reverse force exerted by the hydraulic motor 17 on the shaft 4, the lead wire 10 can be discharged smoothly, and because the direction of rotation of the output shaft of the hydraulic motor 17 is opposite to the direction of rotation of the shaft 4, 4 applies a force in the opposite direction, so the supporting wire 10 between the winding device 5 and the tension applying device 12 generates tension, which is beneficial to the erection of the supporting wire 10. The tension applying device 12 is provided with a tension sensor 24 for detecting the tension on the supporting wire 10 and feeding back the signal to the control device, so that the rotation speed of the hydraulic motor 17 can be changed in real time, and the tension on the supporting wire 10 can be kept constant. When the construction is completed, the hydraulic motor 17 is rotated in the reverse direction, and the winding device 5 is driven to rotate in the opposite direction of the pay-off direction, and the remaining wire 10 is wound on the winding device 5, which is quick and simple.

The support 1 is fixedly provided with a guiding oil pipe 7 for supplying oil to the hydraulic motor 17. The guiding oil pipe 7 includes an oil pipe 71 and an oil cylinder 72. Both ends of the oil pipe 71 are fixedly provided with supports. It is fixed on the road flat car 13, and the two ends of the oil pipe 71 are fixed. The oil pipe 71 is sleeved with an oil barrel 72. The sealing method of 14 is the same. The part of the oil pipe 71 located in the oil barrel 72 is provided with an oil hole 15, and the oil barrel 72 is fixedly provided with a pipe 16 for supplying oil to the hydraulic motor 17. The outer wall of the oil pipe 71 is fixedly connected to the bracket 1, so that the oil cylinder 72 moves with the bracket 1, the pipe 16 passes through the base 2 of the bracket 1, and a valve is provided on the base 2, and the pipe 16 follows the bracket 1 move. There are two guide oil pipes 7, which are used for the oil inlet and outlet of the hydraulic motor 17, and they are respectively located on both sides of the hydraulic oil cylinder 14. As shown in Figure 7, when the hydraulic motor 17 enters the oil, the hydraulic oil enters along an oil pipe 71 that guides the oil pipe 7, and enters the oil cylinder 72 from the oil hole 15. After the oil cylinder 72 is filled up, it enters the hydraulic The motor 17 supplies oil to the hydraulic motor 17. When the hydraulic motor 17 discharges oil, it is discharged from another oil pipe 71 leading to the oil pipe 7. The oil cylinder 72 and the pipe 16 can follow the movement of the support, avoiding the form of drag chain, so that the oil supply pipe 16 will not be dragged. Overall, it is easy to move and has a long service life.

This embodiment also includes a guiding device 9 for detecting the position of the supporting wire 10 and providing an action signal for the hydraulic cylinder 14. The guide device 9 includes a guide rail, a guide mechanism slidably connected to the guide rail through a sliding block 93, and a photoelectric sensor 99 for detecting the position of the guide mechanism.

The guide rail includes a first guide rail 91 and a second guide rail 92. A slider 93 is slidably connected to the first guide rail 91 and the second guide rail 92. Both ends of the first guide rail 91 and the second guide rail 92 pass A guide rail fixing plate 90 is installed on the bolts, and the guide rail fixing plate 90 is fixed on the road flat car 13 so that the first guide rail 91 and the second guide rail 92 are higher than the road flat car 13 and adapt to the height of the supporting wire 10 .

The sliding block 93 is fixedly provided with a guiding mechanism, and the guiding mechanism includes a bottom plate 94 fixed on the sliding block 93, a vertical plate 95 fixed on the bottom plate 94, and a vertical plate 95 that is not connected to the bottom plate. The top plate 96 at one end of 94 is horizontally rotatably connected with two first spool guide wheels 97 between the two vertical plates 95, and three second spool guide wheels 98 are vertically rotatably connected between the bottom plate 94 and the top plate 96, The first wire reel guide wheel 97 and the second wire reel guide wheel 98 form two rows of front and rear, which are used to allow the wire 10 to pass through the gap. A photoelectric sensor 99 is fixed between the first guide rail 91 and the second guide rail 92 to detect the position of the guide device 9. When 12 is aligned, the guiding mechanism will move to the edge position with the supporting wire 10, and the photoelectric sensor 99 detects the position of the guiding mechanism to determine that the bracket 1 needs to move to the left or right, so that the outlet position of the supporting wire 10 is the same as The tension applying device 12 is aligned. There are two photoelectric sensors 99, and the two photoelectric sensors 99 are sequentially arranged along the length direction of the first guide rail 91, and there is a certain distance between the two photoelectric sensors 99. The photoelectric sensor 99 transmits the collected position information of the guiding mechanism to the control device, and the control device makes the hydraulic cylinder 14 drive the support 1 to perform corresponding movement.

The control device includes a generator set 25 and a hydraulic control assembly. The hydraulic control component is used to control the flow and pressure of the hydraulic oil in the hydraulic actuator (the hydraulic motor 17, the hydraulic cylinder 14, the guide oil pipe 7, the second hydraulic motor 6 in the tension applying device 12) to control the hydraulic motor 17, the hydraulic cylinder 14. The hydraulic energy that can be converted by the guide oil pipe 7 and the second hydraulic motor 6 in the tension applying device 12 is adjusted. The hydraulic control component includes a signal control component and an oil storage device 22, a hydraulic oil pump, and an integrated valve set 26 that are connected in sequence. As shown in FIG. Motor power supply; the main control motor directly drives the hydraulic oil pump to provide power for the hydraulic oil pump, so that the hydraulic oil pump flows the hydraulic oil in the oil storage device 22 to the corresponding hydraulic actuator. By controlling the amount of hydraulic oil in the hydraulic actuator, the The hydraulic energy is converted into mechanical energy to provide power for hydraulic actuators. The hydraulic oil pump is the power source of the entire hydraulic system and can meet the pressure and flow requirements of the hydraulic system. Wherein, the oil inlet of the hydraulic oil pump is in communication with the oil storage device 22, and the oil outlet is respectively connected to the hydraulic motor 17, the hydraulic cylinder 14, the guide oil pipe 7, and the tension applying device 12 through the integrated valve block 26 and the oil circuit. The two hydraulic motors 6 are connected to provide corresponding hydraulic energy for the hydraulic actuator. Due to the large number of hydraulic actuators in the entire hydraulic system, in order to appropriately reduce the workload of the hydraulic control components and avoid damage to the device, in this embodiment, there are three main control motors and five hydraulic oil pumps.

The integrated valve group 26 is arranged in the pipeline between the hydraulic oil pump and the hydraulic actuator, and is used to control the flow and pressure of the hydraulic oil in the pipeline. As shown in FIG. 9, the integrated valve group 26 includes a plurality of electro-hydraulic proportional valves 21, an overflow valve and a three-position four-way functional valve connected to the outlet of the electro-hydraulic proportional valve 21; wherein, the electro-hydraulic proportional valve 21 The control end of the proportional valve 21 is electrically connected with the signal control assembly, and the oil outlet of the three-position four-way function valve is respectively connected with the hydraulic motor 17, hydraulic cylinder 14, guide oil pipe 7, and the second of the tension applying device 12 in the hydraulic actuator. The hydraulic motor 6 is in communication, and the relief valve is used to control the overall pressure of the hydraulic system. The setting of the integrated valve group 26 can reduce the use of pipelines in the oil circuit, and the overall structure is simple and clear, which can clearly display the oil circuit controlled by each electro-hydraulic proportional valve 21, and can be easily and quickly checked and repaired after a fault occurs. .

The signal control component detects and controls the flow rate and pressure of each oil circuit of the hydraulic system in real time, so as to adjust the tension applied to the bearing wire 10. The signal control component includes a signal sensor, an A/D conversion module, a PLC control module, and a D/A conversion module electrically connected in sequence. When working, the signal sensor converts the analog signal into a digital signal by the A/D conversion module and transmits it to the PLC control module. After the PLC control module performs internal program calculations, the calculation result is converted into an analog signal by the D/A conversion module. The signal amplifier feeds back to the corresponding electro-hydraulic proportional valve 21, so that the flow and pressure of the hydraulic oil in the oil circuit are controlled through the electro-hydraulic proportional valve 21.

The signal sensor mainly includes a photoelectric sensor 99, an oil pressure sensor 23 and a tension sensor 24. The photoelectric sensor is located below the guide device 9 and is used to detect the position of the guide device 9 driven by the lead wire 10; the oil pressure sensor 23 is located at the outlet of the relief valve and is used to detect the flow of hydraulic oil in each oil circuit. Pressure; The tension sensor 24 is provided on the tension applying device 12, and is used to detect the tension on the erected bearing wire 10 to adjust the rotation speed of the hydraulic motor 17 to keep the tension of the bearing wire 10 constant.

The road flat car 13 of this embodiment is provided with four sets of pay-off devices, so this embodiment includes four second hydraulic motors 6 and four hydraulic cylinders 14 to control the actions of each pay-off device separately . In order to better drive the tension applying device 12 and to ensure that the tension applying device 12 can apply sufficient tension to the supporting wire 10, a second hydraulic motor 6 is respectively provided on both sides of the tension applying device 12.

The working principle of this embodiment is: when the device is used to pay out the bearing wire 10, the road flat car 13 moves forward to release the bearing wire 10, and at the same time, the hydraulic motor 17 exerts a force in the opposite direction on the rotating shaft 4 to make the follower The bearing wire 10 output from the winding device 5 generates a certain tension. After the bearing wire 10 is discharged from the winding device 5, it enters the gap between the first spool guide wheel 97 and the second spool guide wheel 98 of the guide mechanism , And then enter the tension applying device 12. When the exit position of the supporting wire 10 is at the edge of the winding device 5, the supporting wire 10 will have a certain angle with the tension applying device 12. When this angle reaches a certain level, the supporting wire 10 will be It will drive the guiding mechanism to move above the photoelectric sensor 99. The photoelectric sensor 99 collects the position information of the guiding mechanism and transmits it to the control device. The control device controls the oil input or output of each oil circuit so that the hydraulic cylinder 14 and The guiding oil pipe 7 moves to make a corresponding movement, and moves the edge of the bracket 1 toward the direction aligned with the tension applying device 12, and finally aligns the bearing wire 10 output from the winding device 5 with the tension applying device 12 to ensure the erection The quality of the supporting wire 10, and the tension sensor 24 on the tension applying device 12 detects the tension on the supporting wire 10, and feeds it back to the control device, so that the hydraulic motor 17 automatically adjusts the speed to ensure the constant tension.

It should be noted that the above descriptions are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for those skilled in the art to The technical solutions recorded in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A modular constant tension pay-off car includes a pay-off device fixed on a road flat car and a wire-carrying wire passing through in turn, a tension applying device, a wire post and a control device. The pay-off device includes a bracket and a rotating connection. The rotating shaft on the bracket and the winding device fixed on the rotating shaft for winding the bearing wire are characterized in that: the road flat car is fixedly provided with a slide rail device and a device for moving the bracket along the slide rail device A hydraulic oil cylinder, a hydraulic motor used to drive the rotation shaft to rotate and provide tension for the winding device is fixed on the support, and the direction of applying force when the hydraulic motor provides tension to the winding device is opposite to the payout direction of the winding device;

   It also includes a guiding device for detecting the position of the supporting wire and providing an action signal for the hydraulic cylinder;

   The control device includes a generator set and a hydraulic control assembly; the hydraulic control assembly includes a signal control assembly and an oil storage device connected in sequence, at least one hydraulic oil pump, and an integrated valve group. The hydraulic oil pump is driven by a main control motor. The integrated valve group is respectively connected with the hydraulic motor, the hydraulic oil cylinder, and the second hydraulic motor in the tension applying device through pipelines, and the generator group is electrically connected with the main control motor and the signal control assembly through the power distribution cabinet.
2. The modular constant tension pay-off car according to claim 1, characterized in that: the top of the bracket is detachably provided with a bearing seat, the bearing seat includes two upper and lower parts that are engaged with each other, and the rotating shaft passes through the bearing. Rotatingly connected to the bearing seat.
3. The modular constant tension pay-off car according to claim 1 or 2, wherein the slide rail device includes two U-shaped channel steels arranged in parallel, bearing rollers fixed on both sides of the bracket, and The two sides of the bracket are the limit blocks guided by the bearing rollers. The bearing rollers are arranged in the U-shaped channel steel and move along the length of the U-shaped channel steel. The limit blocks are in contact with the inner surface of the U-shaped channel steel and pass through Lubricant sliding fit.
4. The modular constant tension pay-off car according to claim 3, characterized in that: the road flat car is also fixedly provided with a guiding oil pipe, and the guiding oil pipe includes the oil pipe and the sleeve fixed on the road flat car. An oil barrel connected to the oil pipe, the part of the oil pipe located in the oil barrel is provided with an oil hole, and the oil barrel is fixedly provided with a pipeline for supplying oil to the hydraulic motor; the guide oil pipe is provided with two For the oil inlet and outlet of the motor, the outer wall of the oil cylinder is fixedly connected with the bracket and moves along the oil pipe.
5. The modular constant tension pay-off car according to any one of claims 1, 2, 4, characterized in that: the output shaft of the hydraulic motor is fixedly provided with a driving gear, and the rotating shaft is fixedly provided with a driving gear Driven gear with gear meshing.
6. The modular constant tension pay-off car according to claim 5, characterized in that: the guiding device comprises a guide rail, a guide mechanism for carrying the wire through through the sliding block and the guide rail, and a guide mechanism for detecting the position of the guide mechanism For a photoelectric sensor, the guide mechanism includes at least two horizontally arranged first wire reel guide wheels and at least two vertically arranged second wire reel guide wheels.
7. The modular constant tension pay-off car according to claim 6, wherein the first and second reel guide wheels are both rotatably connected to the guide mechanism.
8. The modular constant tension pay-off car according to any one of claims 1, 2, 4, 6, and 7, characterized in that: the integrated valve group includes a plurality of electro-hydraulic proportional valves and an outlet with electro-hydraulic proportional valves. The relief valve and the three-position four-way functional valve connected with the oil port; the control end of the electro-hydraulic proportional valve is electrically connected with the signal control assembly, and the three-position four-way functional valve is connected to the hydraulic motor, the hydraulic cylinder, and the hydraulic cylinder through the oil pipe. The hydraulic motor in the tension application device is connected.
9. The modular constant tension pay-off car according to claim 8, wherein the signal control component includes a signal sensor, an A/D conversion module, a PLC control module, and a D/A conversion module that are electrically connected in sequence; The signal sensor includes a photoelectric sensor arranged under the guide wire guide seat, an oil pressure sensor arranged at the oil outlet of the overflow valve, and a tension sensor arranged on the tension disc.

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