CN113788356A - Contact net wire barrow and control method - Google Patents
Contact net wire barrow and control method Download PDFInfo
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- CN113788356A CN113788356A CN202110898124.6A CN202110898124A CN113788356A CN 113788356 A CN113788356 A CN 113788356A CN 202110898124 A CN202110898124 A CN 202110898124A CN 113788356 A CN113788356 A CN 113788356A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004804 winding Methods 0.000 claims abstract description 8
- 239000010720 hydraulic oil Substances 0.000 claims description 21
- 238000004891 communication Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000009987 spinning Methods 0.000 claims 2
- 239000003921 oil Substances 0.000 description 10
- 238000004364 calculation method Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
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Classifications
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- 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paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out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
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- 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
- B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
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- Tension Adjustment In Filamentary Materials (AREA)
Abstract
The embodiment of the application provides a contact net wire barrow and a control method. Contact net wire barrow includes: a frame; the pay-off reel is fixed on the frame; the pay-off reel is used for pre-winding a contact wire; the tension applying device is arranged at the pay-off reel and is arranged at the pay-off reel; the tension applying device at the pay-off reel is used for applying tension to outgoing lines of the pay-off reel; the tensioner is fixed on the frame and is arranged at intervals with the pay-off reel; the tensioner is used for bearing the outgoing line of the pay-off reel and applying tension to the outgoing line from the tensioner. The technical problem that the tension value of a traditional erected contact line is not easy to control is solved.
Description
Technical Field
The application relates to the technical field of contact network paying-off, in particular to a contact network pay-off carriage and a control method.
Background
The contact network is a special power supply line which is unique to the electrified rail transit, is erected along a rail and provides electric energy for an electric locomotive or an electric motor train unit. In order to ensure that the electric locomotive can normally take electricity even under high-speed operation and severe weather conditions, the structure of the contact network must have corresponding stability and elasticity, so that a pay-off carriage is generally adopted to apply specified tension to the contact line when the contact line is erected, namely, in the advancing process of the pay-off carriage, the contact line on the pay-off carriage is straightened by a tension disc and then released from the rear of the pay-off carriage, so that the contact line forming the contact network reaches the specified tension.
According to the conventional pay-off reel, the pay-off reel generally rotates passively along with the tension reel, and along with the release of the pre-wound contact wire on the pay-off reel, the tension value of the contact wire between the pay-off reel and the tension reel is smaller and smaller, which means that the contact wire wound on the tension reel is gradually loosened, so that the contact wire erected subsequently cannot reach the specified tension value, and the stability and elasticity of the contact net structure are seriously reduced.
Therefore, the tension of the contact wire erected by the traditional pay-off carriage is provided by the tension disc, so that the paying-off tension value of the pay-off carriage is difficult to control, and the technical problem to be solved by the technical personnel in the field is urgently needed.
The above information disclosed in the background section is only for enhancement of understanding of the background of the present application and therefore it may contain information that does not form the prior art that is known to those of ordinary skill in the art.
Disclosure of Invention
The embodiment of the application provides a contact net wire barrow and a control method, and aims to solve the technical problem that the paying-off tension value of the wire barrow is not easy to control as the tension of a contact wire erected by a traditional wire barrow is mainly provided by a tension disc.
According to a first aspect of the embodiment of the application, a contact net wire barrow is provided, including:
a frame;
the pay-off reel is fixed on the frame; the pay-off reel is used for pre-winding a contact wire;
the tension applying device is arranged at the pay-off reel and is arranged at the pay-off reel; the tension applying device at the pay-off reel is used for applying tension to outgoing lines of the pay-off reel;
the tensioner is fixed on the frame and is arranged at intervals with the pay-off reel; the tensioner is used for bearing the outgoing line of the pay-off reel and applying tension to the outgoing line from the tensioner.
According to a second aspect of the embodiment of the application, a control method of a contact net pay-off carriage is provided, which comprises the following steps:
acquiring a paying-off tension target value of a pay-off vehicle, an actual tension value of a pay-off reel outgoing line and an actual tension value of a tensioner outgoing line;
and controlling the rotation resistance applying device of the pay-off reel to apply rotation resistance to the rotation of the pay-off reel according to the pay-off tension target value of the pay-off vehicle, the actual tension value of the pay-off reel and the actual tension value of the pay-off machine.
Due to the adoption of the technical scheme, the embodiment of the application has the following technical effects:
the tension applying device at the pay-off reel is used for applying tension to outgoing lines of the pay-off reel, and the tensioner applies tension to contact lines borne by the tensioner and released by the tensioner and the contact lines are outgoing. The contact net wire barrow of this application embodiment through setting up two parts that can apply tension, and tension applying device and tensioner are located to the drawing drum, provide the condition for the tension value of contact net wire barrow unwrapping wire is stable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a simplified schematic diagram of a contact line payoff carriage according to an embodiment of the application;
fig. 2 is a schematic connection diagram of a hydraulic control assembly and a hydraulic execution assembly of the contact line pay-off carriage shown in fig. 1;
fig. 3 is a schematic internal control diagram of a control unit of the overhead line system carriage shown in fig. 1;
fig. 4 is a control schematic diagram of the overhead line system wire barrow shown in fig. 1.
Reference numerals:
110 pay-off reels, 111 pay-off reel clamps, 112 rope guide wheels, 113 pay-off reel moving devices,
210 tension disc, 211 tension disc clamp, 213 tension disc moving device,
310 lifting a column, 313 lifting a power device,
411 engine, 412 hydraulic oil pump, 413 electro-hydraulic proportional valve, 414 oil tank, 415 solenoid valve, 416 hydraulic motor,
11 lines of contact.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example one
As shown in fig. 1, the contact net wire barrow of the embodiment of the application includes:
a frame;
a pay-off reel 110 fixed on the frame; wherein, the pay-off reel 110 is used for pre-winding the contact wire 11;
the tension applying device is arranged at the pay-off reel and is arranged at the pay-off reel 110; the tension applying device at the pay-off reel is used for applying tension to the outgoing line of the pay-off reel 110;
the tensioner is fixed on the frame and is arranged at an interval with the pay-off reel 110; the tensioner is used for bearing the outgoing line of the pay-off reel 110, applying tension and then leading the outgoing line out of the tensioner.
The contact net wire barrow of this application embodiment has two parts that can exert tension, and drawing drum department tension force application device and tensioner, drawing drum department tension force application device are used for exerting tension to the being qualified for the next round of competitions of drawing drum, and the tensioner is exerted tension and is qualified for the next round of competitions to the contact wire that self bore and is paid out through drawing drum. The contact net wire barrow of this application embodiment through setting up two parts that can apply tension, and tension applying device and tensioner are located to the drawing drum, provide the condition for the tension value of contact net wire barrow unwrapping wire is stable.
In practice, as shown in fig. 1, the tensioner comprises two synchronously rotating tension discs 210; the two tension discs 210 are used for bearing outgoing lines of the pay-off discs 110;
tension applying device at pay-off reel includes:
and the pay-off reel rotation resistance applying device is used for applying rotation resistance to the rotation of the pay-off reel 110, so that the rotation directions of the pay-off reel 110 and the tension disc 210 are the same, and the rotation speed of the pay-off reel 110 is less than that of the tension disc 210.
Traditional wire barrow, the drawing drum generally rotates along with the tension disc is passive, along with paying out of contact wire on the drawing drum, drawing drum weight reduces, and the rotation resistance of drawing drum can be littleer and littleer to cause the tension value of wire between drawing drum and the tension disc littleer and littleer, just also mean that the contact wire of winding to on the tension disc is loose gradually, make the contact wire of follow-up erectting can not reach the tension value of regulation, seriously reduced the stability and the elasticity of contact net structure.
The contact wire barrow of this application embodiment owing to have drawing drum rotational resistance applying device, along with paying out of contact wire on the steering wheel, drawing drum weight reduces, and the rotational resistance of drawing drum diminishes, and drawing drum rotational resistance applying device can apply rotational resistance for the tension value of contact wire can be adjusted between drawing drum and the tensioner, provides the condition for the tension value of contact net barrow unwrapping wire is stable.
In the implementation, the contact net wire barrow still includes:
and the control unit is used for controlling the pay-off reel rotation resistance applying device to apply rotation resistance to the rotation of the pay-off reel according to the pay-off tension target value of the pay-off trolley, the actual tension value of the pay-off reel and the actual tension value of the pay-off machine.
The rotation resistance applied to the rotation of the pay-off reel by the pay-off reel rotation resistance applying device is controlled by the control unit, so that the rotation of the pay-off reel is controlled by the control unit. Like this, the tension value of contact between drawing drum and the tensioner can be adjusted, provides the condition for the tension value of contact net wire barrow unwrapping wire is stable.
In an implementation, as shown in fig. 1, the tension applying device at the pay-off reel further includes:
the pay-off spool clamps 111 are arranged, and one pay-off spool clamp 111 is correspondingly arranged on one pay-off spool; the pay-off reel clamp 111 is used for clamping the contact line 11 at the wire outgoing position of the pay-off reel 110 and then outputting the wire after a braking force is applied;
the tensioner further comprises:
the tension disc clamps 211, one tension disc clamp 211 is correspondingly arranged on one tension disc 210; the tension disc clamp is used for clamping a contact line at the wire outgoing position of the tension disc to apply braking force, winding the two tension discs for preset turns and then leading out the wires.
The contact line is pulled by the contact line pay-off truck moving forward at a constant speed along the erection direction of the contact line, so that tension is provided for the erection of the contact line. The tension is provided for the erected contact wire through the braking force provided by the pay-off reel clamp and the tension reel clamp.
The pay-off reel clamp can provide braking force for the outgoing line of the pay-off reel, namely, tension is provided for the outgoing line of the pay-off reel; the tension disc clamp can provide braking force for the outgoing line of the tension disc, namely, the tension disc clamp can provide tension for the outgoing line of the tension disc.
In implementation, as shown in fig. 1 and fig. 3, the control unit is further configured to control the applied braking force of the pay-off reel clamp 111 and the tension reel clamp 211 according to the target pay-off tension value of the pay-off reel, the actual tension value of the pay-off reel outgoing line and the actual tension value of the tensioner outgoing line, so that the absolute value of the difference between the actual tension value of the tensioner outgoing line and the target pay-off reel outgoing line value is within a preset range. The target value of the paying-off tension is the set value of the paying-off tension.
In this way, the control unit controls the applied braking force of the pay-off reel clamp and the tension reel clamp and the rotation resistance applied by the pay-off reel rotation resistance applying device to the rotation of the pay-off reel according to the pay-off tension target value of the pay-off truck, the actual tension value of the pay-off reel and the actual tension value of the pay-off reel.
Specifically, the control unit controls the pay-off tension of the pay-off vehicle according to a target pay-off tension value, an actual tension value of the pay-off reel and an actual tension value of the pay-off reel;
preferentially controlling the applied braking force of the pay-off reel clamp and the tension reel clamp; when the braking force which can be applied by the pay-off reel clamp and the tension reel clamp reaches the upper limit value of the respective adjusting range, the pay-off reel clamp and the tension reel clamp cannot be adjusted; and then controlling a pay-off reel rotation resistance applying device to apply rotation resistance to the rotation of the pay-off reel, so that the absolute value of the difference between the actual tension value of the outlet wire of the tensioner and the target value of the outlet wire of the pay-off truck is within a preset range, such as less than or equal to 5%.
In the implementation, as shown in fig. 1 and fig. 2, the contact net wire barrow further comprises:
and a tension disc moving device 213 connected to the two tension discs 210, wherein the tension disc moving device 213 is configured to move the two tension discs 210 away from and close to the pay-off disc 110.
The tension disc clamp, the pay-off disc clamp and the pay-off disc rotation resistance applying device apply respective maximum tension, when the tension value of the contact wire at the wire outgoing position of the tensioner still cannot reach the pay-off tension target value of the pay-off vehicle, the tension disc moving device can adjust the position of the two tension discs as a whole relative to the tension discs, the compensation of the wire outgoing tension is realized, and the constant tension control of the contact wire can be still met under extreme conditions. The paying-off tension target value of the pay-off carriage is consistent with the specified tension of the contact wire of the contact network, so that the contact wire erected by the pay-off carriage of the contact network reaches the specified tension of the contact wire if the direction tension actual value of the pay-off carriage of the contact network can reach the paying-off tension target value.
In the implementation, as shown in fig. 1 and fig. 2, the contact net wire barrow further comprises:
the pay-off reel moving device 113 is connected with the pay-off reel 110, wherein the pay-off reel moving device 113 is used for moving the pay-off reel 110 to move along the axial direction of the pay-off reel;
the guide rod is fixed between the pay-off reel and the tensioner, and the length direction of the guide rod is consistent with the axial direction of the pay-off reel;
a rope guide wheel 112 sleeved on the outer peripheral surface of the guide rod, wherein the rope guide wheel 112 can move along the length direction of the guide rod;
the outgoing line of the pay-off reel 110 enters the tension machine through the lower wheel surface of the rope guide wheel 112 so as to control the incoming line height of the contact line in the tension machine; the pay-off reel 110 can move along the axial direction of the pay-off reel, so that the outgoing line position of the pay-off reel is close to the incoming line position of the tension machine, and the aim of adjusting the position of the car insurance position of the pay-off reel is that the outgoing line of the pay-off reel and the incoming line of the tension machine are located on the same straight line or close to the same straight line.
Along with the unwrapping wire of drawing drum, the height that goes out the line of drawing drum can become high, and the line of drawing drum gets into the tensioner through the lower wheel face of rope guide wheel for even the height that goes out the line of drawing drum becomes high, the inlet wire height of contact wire at the tensioner still remains unchanged. Pay off reel mobile device can drive the pay off reel and follow the axial direction of pay off reel removes, like this, cooperation rope guide wheel and guide bar for the position of being qualified for the next round of competitions of pay off reel can coordinate the inlet wire position of tensioner to adjust, makes the position of being qualified for the next round of competitions of pay off reel with the inlet wire position of tensioner is located same straight line, can reduce the friction and drawing of paying off in-process to the contact line, has improved the quality of contact net.
In an implementation, the control unit is further configured to:
and controlling the pay-off reel to perform equidirectional displacement along the axial direction of the pay-off reel according to the displacement of the guide rope wheel along the guide rod deviating from the reference position, so that the wire outlet position of the pay-off reel is close to the wire inlet position of the tension machine. The aim of adjusting the position of the pay-off reel in the car insurance position is that the outgoing line of the pay-off reel and the incoming line of the tension machine are positioned on the same straight line or close to the same straight line.
The pay-off reel moving device can drive the pay-off reel to move along the axial direction of the pay-off reel, and therefore the wire outlet position of the pay-off reel can be adjusted in cooperation with the wire inlet position of the tensioner by means of the cooperation of the rope guide wheel and the guide rod, the wire outlet position of the pay-off reel and the wire inlet position of the tensioner are located on the same straight line or close to the same straight line, and centering of a contact wire is achieved.
In the implementation, as shown in fig. 4, the contact net wire barrow further comprises:
the pay-off reel outgoing line tension sensor is in communication connection with the control unit, is arranged at the outgoing line position of the pay-off reel, and is used for acquiring the actual tension value of the pay-off reel outgoing line and transmitting the actual tension value to the control unit;
the outlet wire tension sensor of the tensioner is in communication connection with the control unit, is arranged at the outlet wire position of the tensioner, is used for acquiring the actual tension value of the outlet wire of the tensioner and transmitting the actual tension value to the control unit;
and the guide rope wheel distance sensor is in communication connection with the control unit, is arranged on the guide rope wheel, is used for acquiring the distance of the guide rope wheel deviating from the preset position of the guide rod, and transmits the distance to the control unit.
The pay-off reel outgoing line tension sensor, the tensioner outgoing line tension sensor and the rope guide wheel distance sensor are used for obtaining an actual tension value of the pay-off reel outgoing line, the actual tension value of the tensioner outgoing line and the distance of the rope guide wheel deviating from the preset position of the guide rod provide a basis for control of the control unit.
In the implementation, as shown in fig. 1, the contact net wire barrow further comprises:
the jacking column 310 is fixed on the frame, and the pay-off reel 110 is positioned between the jacking column 310 and the tensioner;
the jacking power device 313 is used for providing lifting power for the jacking column 310;
the jacking column 310 is used for jacking a contact line of the outlet wire of the tensioner, and can be lifted to adapt to the height of a contact net.
The existence of jacking post makes the unwrapping wire height of contact net wire barrow adjustable for the contact net wire barrow commonality is better.
The key points of the embodiment of the application comprise:
the control unit controls the applied braking force of the pay-off reel clamp and the tension reel clamp and the rotation resistance of the pay-off reel rotation resistance applying device, so that the automatic adjustment of the outgoing line tension value of the contact net pay-off truck is realized, and the adjustment aims to enable the actual tension value of the outgoing line of the tensioner to be as close as possible to the target outgoing line value of the pay-off truck, or at least enable the absolute value of the difference value ratio between the actual tension value of the outgoing line of the tensioner and the target outgoing line value of the pay-off truck to be within a preset range, such as being less than or equal to 5%. Like this, the contact net wire barrow of being qualified for next round of competitions of contact net wire barrow is constant tension's contact net wire barrow.
The control unit enables the outgoing line of the pay-off reel and the incoming line of the tensioner to be approximately on the same straight line through the combination of the rope guide wheel, the guide rod and the rope guide wheel distance sensor, and automatic centering is achieved.
And when the actual tension value of the outgoing line of the contact net pay-off carriage still cannot reach the target value of the outgoing line of the pay-off carriage within the adjusting range of the pay-off carriage clamp, the tension disc clamp and the pay-off carriage rotation resistance applying device, the positions of the two tension discs as a whole are moved by the tension disc moving device to perform tension compensation.
In the implementation, as shown in fig. 2, the contact net wire barrow further comprises:
the tension disc driving device corresponds to one tension disc and is used for providing power for the rotation of the tension disc;
the pay-off reel moving device 113, the tension reel moving device 213 and the jacking power device 313 respectively adopt hydraulic oil cylinders;
the pay-off spool clamp and the tension spool clamp adopt hydraulic clamps.
In the implementation, the contact net wire barrow still includes the hydraulic control subassembly:
the hydraulic control system is used for controlling the flow and pressure of hydraulic oil in the hydraulic execution assembly so as to adjust the hydraulic pressure which can be converted by the hydraulic execution assembly;
the hydraulic execution assembly comprises a hydraulic oil cylinder and a hydraulic clamp.
Specifically, as shown in fig. 2, the hydraulic control assembly includes an engine 411, a hydraulic oil pump 412, and an electro-hydraulic proportional valve 413. As shown in fig. 2, the engine 411 is connected to the hydraulic oil pump 412 through the transfer case to provide power for the hydraulic oil pump 412, so that the hydraulic oil pump 412 can convert mechanical energy into hydraulic energy; the hydraulic oil pump 412 is a power source of the whole hydraulic system and can meet the pressure and flow requirements of the hydraulic system. An oil inlet of the hydraulic oil pump 412 is communicated with the oil tank 414, and an oil outlet is respectively communicated with each hydraulic execution component to provide corresponding hydraulic energy for the hydraulic execution components. An electro-hydraulic proportional valve 413 is provided in an oil passage between the hydraulic oil pump 412 and the hydraulic actuator assembly for controlling the flow rate and pressure of hydraulic oil in the oil passage. As shown in FIG. 2, the control end of the electro-hydraulic proportional valve is electrically connected with the PLC control system.
As shown in fig. 3, the control unit employs a PLC control system. The flow and pressure of each oil way of the hydraulic system are detected and controlled in real time through the analysis and calculation of signals acquired by the sensors, so that the tension applied to the contact line is adjusted. During operation, the signal sensor sends a signal to the PLC control system, and after the PLC control system carries out internal operation, the PLC control system transmits a control signal to the corresponding electro-hydraulic proportional valve 413 and the corresponding electromagnetic valve 415, so that the flow and the pressure of hydraulic oil in an oil way are controlled through the electro-hydraulic proportional valve and the electromagnetic valve.
Specifically, the PLC control system is a new-generation industrial control device formed by introducing a microelectronic technology, a computer technology, an automatic control technology and a communication technology on the basis of a conventional sequence controller, and is intended to replace sequential control functions such as relays, execution logic, timing, counting and the like, and establish a flexible remote control system.
The signal sensor comprises a pay-off reel outgoing line tension sensor, a tensioner outgoing line tension sensor and a rope guide wheel distance sensor.
Pulse Width Modulation (PWM) techniques.
Example two
According to the control method of the contact network wire barrow in the embodiment, the connection wire king wire barrow in the embodiment I is automatically controlled, and the contact network wire barrow applies constant tension to a contact wire. The method comprises the following specific steps:
step S1: starting the engine 411, wherein the engine 411 provides power for the hydraulic oil pump 412 through the transfer case;
step S2: the hydraulic oil pump 412 is communicated with an oil tank 414 and provides hydraulic oil for the hydraulic control assembly and the hydraulic execution assembly;
step S3: before erecting the contact line, winding the contact line 11 on the pay-off reel 110 onto a tension reel 210 through a rope guide pulley 112, inputting the required tension into a PLC control system and setting the pay-off speed;
step S4: when the contact wire 11 is erected, the pay-off carriage advances at a constant speed according to a set pay-off speed, the tension disc 210 and the contact wire on the pay-off disc 110 are tensioned, and the pay-off disc clamp 111 and the tension disc clamp 211 are clamped tightly to provide braking force for erecting the contact wire. The vehicle advances at a constant speed along the installation direction of the contact line to pull the contact line, so as to provide tension for the installation of the contact line. As shown in fig. 3, the target value of the uniform speed of the vehicle along the contact line erecting direction is the set speed value of the wire barrow.
As shown in fig. 3, the tension of the contact line is detected by a pay-off reel outgoing line tension sensor and a tensioner outgoing line tension sensor, then a signal is fed back to a PLC control system, PID calculation is performed in the PLC control system, and the PWM values of the pay-off reel clamp 111 and the tension reel clamp 211 are changed and controlled by using the calculation result, so that the braking force of the pay-off reel clamp 111 and the tension reel clamp 211 is changed, and the erected contact line reaches the specified tension;
the rope guide wheel 112 moves passively along with the contact line 11 released by the pay-off reel, a real signal of the position of the rope guide wheel is transmitted to a PLC control system by the distance sensor of the rope guide wheel 112, the PLC control system adjusts an electromagnetic valve of a hydraulic oil cylinder serving as a pay-off reel moving device according to a calculation result after calculation, and then the position of the pay-off reel 110 is adjusted along the axial direction of the steering wheel, so that the outgoing line position of the pay-off reel 110 and the incoming line position of the tension disc are on the same line;
if the PLC control system judges that the adjustment range of the hydraulic clamp and the adjustment range of the tension disc driven by the tension disc moving device cannot meet the tension requirement of the contact wire in the automatic tension adjusting process, the PLC control system controls the tension compensation oil cylinder serving as a tension disc driving device to be connected, and adjusts the two tension discs 210 to be away from the pay-off disc 110 as a whole so that the contact wire reaches the specified tension.
Step S5: after the contact line is erected, the pay-off spool clamp 111 and the tension spool clamp 211 are loosened, the pay-off spool 113 starts up the take-up hydraulic motor 416, and the rest of the contact line and the catenary cable of the contact line pay-off truck are wound back.
In the description of the present application and the embodiments thereof, it is to be understood that the terms "top", "bottom", "height", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In this application and its embodiments, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application and its embodiments, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (15)
1. The utility model provides a contact net wire barrow which characterized in that includes:
a frame;
the pay-off reel is fixed on the frame; the pay-off reel is used for pre-winding a contact wire;
the tension applying device is arranged at the pay-off reel and is arranged at the pay-off reel; the tension applying device at the pay-off reel is used for applying tension to outgoing lines of the pay-off reel;
the tensioner is fixed on the frame and is arranged at intervals with the pay-off reel; the tensioner is used for bearing the outgoing line of the pay-off reel and applying tension to the outgoing line from the tensioner.
2. The catenary payoff carriage as claimed in claim 1, wherein the tensioner comprises two synchronously rotating tension discs; the two tension discs are used for bearing outgoing lines of the pay-off discs;
tension applying device at pay-off reel includes:
and the pay-off reel rotation resistance applying device is used for applying rotation resistance to the rotation of the pay-off reel, so that the pay-off reel and the tension disc rotate in the same direction, and the rotation speed of the pay-off reel is less than that of the tension disc.
3. The contact net wire barrow of claim 2, further comprising:
and the control unit is used for controlling the pay-off reel rotation resistance applying device to apply rotation resistance to the rotation of the pay-off reel according to the pay-off tension target value of the pay-off trolley, the actual tension value of the pay-off reel and the actual tension value of the pay-off machine.
4. The contact net wire barrow of claim 3, wherein the tension applying device at the pay-off reel further comprises:
the pay-off spool clamps are correspondingly arranged on one pay-off spool; the pay-off reel clamp is used for applying tension to a contact wire of the pay-off reel and then leading out the wire;
the tensioner further comprises:
the tension disc clamp is correspondingly arranged on one tension disc; the tension disc clamp is used for clamping a contact line at the wire outgoing position of the tension disc to apply braking force, winding the two tension discs for preset turns and then leading out the wires.
5. The contact net wire barrow according to claim 4, wherein the control unit is further configured to control the applied braking force of the wire barrow clamp and the tension disc clamp according to a wire releasing tension target value of the wire barrow, an actual tension value of the wire outlet of the wire releasing disc and an actual tension value of the wire outlet of the tensioner, so that a difference ratio absolute value between the actual tension value of the wire outlet of the tensioner and the target value of the wire outlet of the wire barrow is within a preset range.
6. The contact net wire barrow of claim 5, further comprising:
the tension disc moving device is connected with the two tension discs, and is used for moving the two tension discs away from the pay-off disc;
the control unit is also used for controlling the tension disc moving device to move the two tension discs away from the pay-off disc after the pay-off disc clamp, the tension disc clamp and the pay-off disc rotation resistance applying device reach the upper limit of the respective adjusting range.
7. The contact net wire barrow of claim 5, further comprising:
the pay-off spool moving device is connected with the pay-off spool, and is used for moving the pay-off spool to move along the axial direction of the pay-off spool;
the guide rod is fixed between the pay-off reel and the tensioner, and the length direction of the guide rod is consistent with the axial direction of the pay-off reel;
the rope guide wheel is sleeved on the outer peripheral surface of the guide rod and can move along the length direction of the guide rod;
the outgoing line of the pay-off reel enters the tension machine through the lower wheel surface of the rope guide wheel so as to control the incoming line height of the contact line in the tension machine; the pay-off reel can move along the axial direction of the pay-off reel, so that the wire outlet position of the pay-off reel is close to the wire inlet position of the tensioner.
8. The contact net wire barrow of claim 7, wherein the control unit is further configured to:
and controlling the pay-off reel to perform equidirectional displacement along the axial direction of the pay-off reel according to the displacement of the guide rope wheel along the guide rod deviating from the reference position, so that the wire outlet position of the pay-off reel is close to the wire inlet position of the tension machine.
9. The contact net wire barrow of claim 8, further comprising:
the pay-off reel outgoing line tension sensor is in communication connection with the control unit, is arranged at the outgoing line position of the pay-off reel, and is used for acquiring the actual tension value of the pay-off reel outgoing line and transmitting the actual tension value to the control unit;
the outlet wire tension sensor of the tensioner is in communication connection with the control unit, is arranged at the outlet wire position of the tensioner, is used for acquiring the actual tension value of the outlet wire of the tensioner and transmitting the actual tension value to the control unit;
the rope guide wheel distance sensor is in communication connection with the control unit, is arranged on the rope guide wheel, is used for acquiring the distance of the rope guide wheel deviating from the preset position of the guide rope wheel on the guide rod, and transmits the distance to the control unit;
and the vehicle speed sensor is fixed on the vehicle frame and used for sensing the speed of the vehicle speed sensor.
10. The contact net wire barrow of claim 8, further comprising:
the jacking column is fixed on the frame, and the pay-off reel is positioned between the jacking column and the tensioner;
the jacking power device is used for providing lifting power for the jacking column;
the jacking column is used for jacking a contact line of the outlet wire of the tensioner and can be lifted to adapt to the height of a contact net.
11. The contact net wire barrow according to claim 10, characterized in that said contact net wire barrow further comprises:
the tension disc driving device corresponds to one tension disc and is used for providing power for the rotation of the tension disc;
the pay-off reel moving device, the tension reel moving device and the jacking power device respectively adopt hydraulic oil cylinders;
the pay-off spool clamp and the tension spool clamp adopt hydraulic clamps.
12. The contact net wire barrow of claim 10, further comprising a hydraulic control assembly:
the hydraulic control system is used for controlling the flow and pressure of hydraulic oil in the hydraulic execution assembly so as to adjust the hydraulic pressure which can be converted by the hydraulic execution assembly; the hydraulic execution assembly comprises a hydraulic oil cylinder and a hydraulic clamp;
the control unit is connected with the hydraulic control assembly and used for sending a control command to the hydraulic control assembly, and the control command is used for controlling the flow and the pressure of hydraulic oil in the hydraulic execution assembly.
13. The control method of the contact net pay-off carriage as claimed in any one of claims 1 to 12, characterized by comprising the following steps:
acquiring a paying-off tension target value of a pay-off vehicle, an actual tension value of a pay-off reel outgoing line and an actual tension value of a tensioner outgoing line;
and controlling the rotation resistance applying device of the pay-off reel to apply rotation resistance to the rotation of the pay-off reel according to the pay-off tension target value of the pay-off vehicle, the actual tension value of the pay-off reel and the actual tension value of the pay-off machine.
14. The control method according to claim 13, wherein before the step of controlling the spinning reel rotation resistance applying device to apply rotation resistance to the rotation of the spinning reel according to the target pay-off tension value of the pay-off carriage, the actual tension value of the pay-off reel and the actual tension value of the pay-off reel, the method further comprises the steps of:
and controlling the clamp of the pay-off reel and the applied braking force of the clamp of the tension reel according to the pay-off tension target value of the pay-off vehicle, the actual tension value of the pay-off reel and the actual tension value of the pay-off reel.
15. The control method according to claim 14, characterized by further comprising the step of:
and after the pay-off reel clamp, the tension reel clamp and the pay-off reel rotation resistance applying device reach the upper limit of the respective adjusting range, controlling the tension reel moving device to move the two tension reels away from the pay-off reel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110898124.6A CN113788356B (en) | 2021-08-05 | 2021-08-05 | Contact net wire barrow and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110898124.6A CN113788356B (en) | 2021-08-05 | 2021-08-05 | Contact net wire barrow and control method |
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| CN113788356A true CN113788356A (en) | 2021-12-14 |
| CN113788356B CN113788356B (en) | 2024-04-09 |
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| Publication number | Publication date |
|---|---|
| CN113788356B (en) | 2024-04-09 |
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