JP2006182327A - Overhead line installation device and its controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an overhead line installation device allowing addition of tensile force to a wire body when performing overhead line installation work to cope with various small-to-large requirements and to provide a controller for the overhead line installation device capable of adding tensile force rationally in accordance with a condition of the line body. <P>SOLUTION: This overhead line installation device and its controller 30 for performing overhead line extending/winding work of the line body control driving of variable displacement hydraulic motors 15, 15' through a controller 31 by operator's commands by providing a rotation direction control valve 27 and a variable pressure control valve 28 in a hydraulic circuit from an oil pressure supply source to each hydraulic motor 15, 15' using the hydraulic motors 15, 15' of variable capacity type as a hydraulic driving means for driving a drum 10 to set tight tensile force of the line body. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to an overhead line facility apparatus and a control apparatus thereof used mainly for carrying out an operation of installing or winding an aerial line such as a railway feeder, a bridge line and a trolley line, or a general power line.

  Conventionally, for example, in an overhead line construction on a railway line, a feeder line (sending electric power), an overhead line (suspending and supporting a trolley line), a trolley line (supplying electric power from the feeder line to a railway vehicle), etc. Wire laying and winding work is performed. The striated bodies used in these (such as a trolley line or a trolley line) are laid in tension between struts installed at substantially constant intervals along the track. Therefore, when constructing a new striate body, it is necessary to extend it while applying a predetermined tension force to the striate body, and to construct it in a tensioned state at a predetermined position. In addition, when the used linear body to be replaced is wound around the drum, it is necessary to wind it so as not to loosen for easy handling.

  Normally, the wire rod to be drawn is a long one, so that the wire wound around the drum is drawn out, and at that time, the curl is removed and the tension state at the time of the overhead wire is maintained. In addition, the striated body is drawn out from the drum while a predetermined tension is applied to the striated body, and the installation work is performed. For this reason, a hydraulic motor is used to rotationally drive the drum around which the filament is wound. By the way, the thickness of the striate body to be handled differs depending on the type and use conditions, and the winding diameter of the drum is different, so that the driving torque during rotation is naturally different. Since the same device is used to drive the striate winding drum having different conditions, if it is operated with a constant driving torque, the tension acting on the striatum is also affected. For this reason, a variable relief valve is provided in the hydraulic circuit to the drive motor (fixed capacity hydraulic motor) to change the drive torque depending on the requirements for the extension of the filament and the progress of the extension. Adjustment is set by changing the set pressure of the variable relief valve (Patent Document 1). Alternatively, the tension adjustment corresponding to the drum winding diameter is made to correspond by changing the predetermined pressure by the pressure control valve (see, for example, Patent Document 2).

JP 2000-21504 A JP 2000-142185 A

However, since the specifications of the line bodies handled by the overhead line facility apparatus are diverse, for the overhead line work that handles the line bodies having different conditions, the prior art as described above (Patent Document 1, Patent Document 1). The countermeasure by 2) is difficult to deal with. For example, in a striated body used in railway overhead wire work, a cable overhead line: a cross-sectional area of 90 mm ² and a unit mass of approximately 0.70 kg / m, a tension force of approximately 100 kg, a trolley wire: a cross-sectional area of 110 mm ² and a unit mass of approximately The tension of 0.99 kg / m and feeder is about 400 kg, and when erected, it is tensioned by the operator's hand using a traction tool such as a chain block. Also, feeding circuit messenger wire ( "messenger wire" and "-out wire" and those were combined): unit mass in the cross-sectional area 356 mm ² is 3.2 kg / m, when using such striatum Requires a tension of 2000 kg as the final overhead wire mounting tension. In addition, depending on the type of filaments to be handled, the winding diameter of the drum used varies greatly from 0.8 m to 2.3 m, or from 1 m to 2.875 m. However, it is desired that these different requirements be covered by a common overhead line facility device.

  Therefore, in order to handle long striated rods with different mass per unit length, if the tension range as described above is wide, it is difficult to cope with pressure adjustment of the supply pressure to the hydraulic motor. There is a problem that a sufficient tension cannot be obtained. If the proper tension cannot be set, the pressure control valve must be adjusted frequently to loosen or over-tension the striated wire body when it is installed, and to maintain the tension properly. Since it cannot always be properly maintained, the working efficiency is remarkably lowered, and it is difficult to achieve the intended purpose.

  The present invention was made in order to solve such problems, and provides an overhead line facility apparatus capable of responding to a wide variety of requirements, from the smallest to the largest, in which tension is applied to the linear body during overhead wire work. At the same time, it is an object of the present invention to provide a control device for an overhead wire facility apparatus that can reasonably add tension according to the condition of the striatum.

In order to achieve the above object, the overhead line facility apparatus according to the first invention comprises:
An overhead line facility device for performing wire drawing and winding work of a wire body,
The hydraulic drive means includes a plurality of variable displacement hydraulic motors as a drum drive machine, a rotation direction control valve thereof, and a pressure control valve, and a linear body to be handled when driving the drum has a required tension. It is characterized by comprising control means for hydraulic drive means to be maintained.

In order to achieve the above object, the control device for the overhead line facility apparatus according to the second invention comprises:
It is a control device for an overhead wire facility apparatus that performs wire drawing and winding work of a wire body,
A plurality of variable displacement type hydraulic motors are used as the hydraulic drive means for driving the drum, a rotation direction control valve and a pressure control valve are interposed in a hydraulic circuit from a hydraulic supply source to each hydraulic motor, and the drum Is provided with a drum winding diameter sensor that detects the winding diameter of the wire rod in the drum and transmits winding diameter data to the controller, and controls the driving of the hydraulic motor via the controller in response to an operator command. It is characterized by being configured to be able to set the tension of the striatum.

  In the first and second aspects of the invention, each data signal from the pressure sensor in the hydraulic circuit and the capacity sensor of the hydraulic motor is subjected to arithmetic processing by a calculation unit of the controller, and the capacity of the hydraulic motor is drummed according to a command from the controller. The wire body is controlled to be drawn and wound with appropriate tension (third invention).

  In the first and second aspects of the invention, the pressure control valve is a variable pressure control valve, and the tension of the striate at the time of extension / winding set by the operator is applied from the controller to the variable pressure control valve. It is preferable that the hydraulic motor is driven and set by a pressure command and a capacity command to the hydraulic motor (fourth invention).

  Further, in the second invention, at least one of the plurality of hydraulic motors is configured to selectively issue a rotation direction instruction command to a rotation direction control valve provided in a hydraulic circuit from the controller to each hydraulic motor. A reverse rotation command is transmitted to control the rotational force of the drum (fifth invention).

  Further, in the second invention, the pressure control valve is a variable pressure control valve, and at the time of extension, at least one of the plurality of drum drive hydraulic motors is set with a pressure instruction command of the variable pressure control valve set to 0. It is preferable to rotate the drum in the extending direction or winding direction with a hydraulic motor (the sixth invention).

  In the second to sixth aspects of the invention, the drum may be configured such that a variable displacement hydraulic motor is connected to both ends of the rotation shaft, and the drum rotates while being controlled to a required speed by a command from a controller (first). 7 invention).

  According to the first aspect of the present invention, an overhead line facility apparatus including a drum that is mounted on a vehicle body having a power unit that can mainly travel on a road or a railroad track and that extends and winds various aerial lines (striates). As the hydraulic drive means that operates by a hydraulic power source that obtains power from the power section to drive the drum, a plurality of variable displacement type hydraulic motors are used, and the control means supplies the hydraulic motor to the hydraulic motor. By variably adjusting the pressure oil supply pressure and the operating pressure oil capacity of the motor, it is possible to work while applying a required tension to the linear body fed from the drum.

  In other words, a variable displacement hydraulic motor is used for the drum drive and its capacity (cc / rev) is variable, so that the torque at the time of winding and unwinding of the filament can be varied and handled. Even if the unit mass and the length of the overhead wire are different, a predetermined tension force can be applied by controlling the hydraulic pressure and capacity supplied to the hydraulic motor. In short, when the drum diameter is large, the supply hydraulic pressure and the capacity of the hydraulic motor are increased. Conversely, when the drum diameter is small, the supply hydraulic pressure and the capacity of the hydraulic motor are decreased to give a predetermined tension to the filament. Can work. Therefore, it can be handled in the same manner by this apparatus in response to changes in various drum diameters. Moreover, for example, there is no excessive looseness or tension during wire drawing (feeding out from the drum) in the overhead wire work, and the work is easy, and naturally the work efficiency can be improved. In addition, even when winding on a drum, it is wound with an appropriate tension and can be effectively processed even with a long filament. Moreover, even if it is a stationary type support body, the same effects as described above can be obtained in wire drawing and winding operations.

Next, according to the second invention, a plurality of variable displacement hydraulic motors are used to drive the drum, and in accordance with the type of the linear body handled via the controller and the diameter of the drum according to the operator's command Drive control can be performed. That is, in the case of a conventional fixed-capacity hydraulic motor, if the drum winding diameter is large from the relationship of T = Fr (T: drum rotation torque, F: tension, r: drum winding diameter), Therefore, it is necessary to increase the capacity of the hydraulic motor so that the tension can be properly maintained. On the other hand, if the winding diameter of the drum is small, the winding speed of the wire body becomes slow, and it is necessary to increase the flow rate of the hydraulic pump in order to maintain the wire drawing / winding speed appropriately. Thus, the conventional drive system presents a state where the hydraulic motor and hydraulic pump must be replaced.
In addition, when the capacity of the hydraulic motor is increased to match the maximum drum diameter to be used, the hydraulic motor pressure required to drive the drum with a smaller diameter and obtain the proper striate tension is small. It becomes pressure. In general, when the pressure is small, the control accuracy of the hydraulic equipment is deteriorated, which is not preferable. Moreover, in the case of wire drawing work, it becomes operation which draws out a filament from a drum, running this overhead wire facility apparatus (overhead facility vehicle) on a track | orbit. And since the wire rod wound around the drum body is drawn out and the winding diameter gradually decreases, when the hydraulic motor is rotated at a constant torque, the winding diameter gradually decreases. Therefore, the feeding speed becomes slow. In short, the tension F applied at the time of feeding to the wire body to be drawn is in a relationship represented by the following equation.
F = T / r = P × Q / r
T: Drum rotational torque, r: Drum radius, P: Hydraulic pressure Q: Hydraulic motor capacity According to the present invention, the hydraulic motor uses a plurality of variable capacity hydraulic motors. By changing the capacity of the motor or changing the pressure of the supply pressure oil, it is possible to make appropriate the tension and speed to be applied to the wire body to be handled. As a result, the effect of the overhead line facility apparatus in the first invention can be improved. It can be easily obtained.

  Moreover, according to 3rd invention, there exists an effect that the tension | tensile_strength of a linear body can be appropriately controlled according to the linear body winding diameter of a drum easily.

  According to the fourth aspect of the invention, when the operator gives a tension instruction command to the controller at the operation unit, the calculation unit performs calculation processing, the pressure is set by the variable pressure control valve, and the capacity of the hydraulic motor is set. Thus, the tension on the striatum during wire drawing / winding work can be made appropriate.

  Furthermore, according to the fifth invention, since the drum is driven by a plurality of variable displacement hydraulic motors as well as the rotation direction of the drum, the rotation is performed with respect to at least one of the motors. By selectively switching the hydraulic circuit by the direction control valve, it is possible to switch the required motor rotation direction during operation, and to apply a braking force to the drum rotating at an excessive speed by so-called reverse torque. Play.

  Still further, according to the sixth aspect of the present invention, the resistance of the idling motor side can be reduced by pulling out the wire rod by driving the auxiliary motor to rotate idly by at least one hydraulic motor against idling of the motor at the time of wire drawing. It is possible to reduce resistance, maintain appropriate tension on the wire rod to be drawn, facilitate wire drawing, and facilitate work to improve efficiency.

  By adopting the configuration of the seventh aspect of the invention, driving is performed by applying a rotational force from both sides of the drum, so that the driving can be performed under the same left and right conditions. In addition, as described above, braking or auxiliary driving can be performed easily by driving one of the motors in response to acceleration rotation in the neutral state of the drum at the time of wire drawing or resistance to pulling out the filament. It can be done and is effective.

  Next, specific embodiments of the overhead line facility apparatus according to the first invention and the control apparatus according to the second invention will be described with reference to the drawings.

  FIG. 1 is an overall front view of an embodiment of an overhead line facility apparatus according to the present invention. FIG. 2 is a front view showing a winding drum of a linear body and its supporting portion, FIG. 3 is a side view taken along line AA of FIG. 2, and FIG. 4 is a control device for an overhead line facility apparatus according to this embodiment. FIG. 5 is a hydraulic control circuit diagram of the control device for controlling the driving of the drum, FIG. 6 is a flowchart for extending the linear body, and FIG. The flowcharts for winding are shown respectively.

  The overhead line facility apparatus 1 of this embodiment will be described for a case where it is applied to a railway overhead line facility vehicle. In this vehicle, a pair of front wheels 3 and rear wheels 3 ′ are arranged at predetermined intervals as a road surface traveling portion below the vehicle body 2 so as to travel on a general road surface D. The front wheel 3 is provided to be steerable. A driver's cab 4 is installed on the front part of the vehicle body 2, and an engine part (not shown) is provided at a lower position thereof. The rear wheel 3 ′ is driven from the engine part by a driving device. The front wheel 3 is steered by the steering device. On the upper part of the traveling vehicle body 2, a drum 10 around which a linear body is wound is supported and mounted by a support frame 11. A driving operation unit 20 for operating the drum 10 is provided at the rear position of the cab 4, and a controller 31 including a calculation unit and a storage unit is provided at a lower position of the installation position of the driving operation unit 20. A control device 30 and a hydraulic drive device are arranged. It should be noted that iron wheels 6, 6 'that can travel along the rails on the railroad track S by the support structure members 5, 5' attached to the lower side of the vehicle body 2 so as to be able to rise and fall are set back and forth at predetermined intervals. If the supporting structural members 5 and 5 'of the iron wheels 6 and 6' are displaced downward at the same time, the vehicle body 2 is lifted as it is in contact with the rail and lifted to a predetermined position, and the front and rear wheels 3 and 3 'are lifted. It is set as the structure which can drive | work on the track | orbit S. FIG. A rolling device 7 is provided at the lower center of the vehicle body 2. The rolling device 7 is normally pulled up to the vehicle body side and stored in a range that does not hinder travel, and the lower-side seat plate 7a is pressed against the ground by a jack (not shown) built in during use. The entire vehicle body 2 is lifted, the vehicle body side is turned by a turning mechanism built in the seat plate 7a, and the direction of the vehicle body 2 is changed.

  The drum 10 mounted on the upper portion of the vehicle body 2 having such a structure is formed with a frame at a required height on both sides of the upper surface of the vehicle body with the rotation axis being orthogonal to the longitudinal center line of the vehicle body 2. The rotating shaft 16 ′ of the rotation support member 16 is supported by the bearing means 12 on the pair of support bases 11 installed as described above, and is rotated via hydraulic motors 15 and 15 ′ connected to the rotation shaft 16 ′. The support member 16 is sandwiched from both sides and is rotatably arranged. The drum 10 has different dimensions depending on the type of filaments to be handled. Generally, a drum member 10b having a required diameter is integrally formed between the face plates 10a, 10a on both sides, and a circular through-hole is formed in the shaft core portion. A hole (not shown) is provided.

  The bearing means 12 that supports the drum 10 includes a bearing bracket 14 that is supported on a top surface of the support base 11 by an actuator 13 (for example, a hydraulic cylinder or an air cylinder) that moves linearly in the axial direction thereof, and the linear bracket 14. The moving actuator 13 and slide bearing structures 13 ′ and 13 ′ guided and supported on both sides of the actuator 13 are arranged symmetrically. The rotation support member 16 can be rotatably supported on the axis of the drum 10 from the left and right via the hydraulic motors 15 and 15 'supported on the front surface of the bearing bracket 14 of the bearing means 12. Has been.

  The rotation support member 16 has an abutment surface that can abut on and support the side surface of the drum 10 (the outer surface of the face plate 10a). And a centering member (for example, a cone-shaped member, not shown), and the rotation shaft 16 'is connected to the output shafts of the hydraulic motors 15 and 15' fixed to the front side surface of the bearing bracket 14. .

  The drum 10 is attached and detached by a support portion by operating the bearing means 12 forward and backward. In short, when the drum 10 is supported in a rotatable state, the bearing brackets 14 of the left and right bearing means 12 and 12 are moved backward by the linear actuator 13 so that the space between the two rotation support members 16 and 16 is widened. After the drum 10 is suspended and centered by a separate crane and the bearing bracket 14 is advanced all at once by the linear actuator 13, the rotary support member 16 advances together with the hydraulic motors 15 and 15 ', and the drum 10 is moved from both sides. It is configured so that it can be attached and operated. Therefore, it can be mounted regardless of the dimensions of the drum 10.

  Further, at the front lower part position in the arrangement portion of the drum 10, the drum linear body winding diameter sensor 17 is oriented in a direction perpendicular to the axial center line of the drum 10 without disturbing the rotation of the drum 10. (Hereinafter referred to as drum diameter sensor 17) is installed. The drum diameter sensor 17 can be a non-contact sensor such as an ultrasonic sensor, an infrared sensor, or a laser sensor. Further, a guard 18 is provided at a drum side position of the sensor installation location so as to prevent the sensor from being damaged.

  Further, a driving operation unit 20 is provided at a position near the cab 4 at the top of the vehicle body 2. The driving operation unit 20 includes a scaffold 21 having a required width on the upper side from the upper surface of the vehicle body 2, an operator's cockpit 22 provided at a position slightly higher than the scaffold 21, and an operation panel 23 on the front side of the cockpit 22. The operation panel 23 can be operated by an operation lever or a button switch. A control device 30 is disposed below the cockpit 22, and a controller 31 is incorporated in the control device 30. Also, a hydraulic drive device that is driven by receiving power from an engine unit (power unit) (not shown) is disposed near the lower portion of the scaffold 21, and a hydraulic motor 15 that drives the drum 10 from the hydraulic drive device, A pipe (not shown) to 15 'is provided.

  For the drum driving, variable displacement hydraulic motors 15 and 15 '(hereinafter simply referred to as hydraulic motors 15 and 15') are used. Therefore, the driving force can be controlled without difficulty by varying the capacity of the hydraulic motors 15 and 15 'during operation.

  FIG. 4 is a control system diagram of the hydraulic circuit for hydraulic drive and the control device 30, a hydraulic circuit diagram shown in FIG. 5, and a flowchart in the case of extending the linear body shown in FIG. 6. It demonstrates, referring the flowchart in the case of winding up the linear body shown by FIG.

  The drum 10 is driven by hydraulic motors 15, 15 ′ connected to rotation shafts 16 ′, 16 ″ of a pair of rotation support members 16 that are held in contact with both sides thereof. The hydraulic circuits 25 and 25 ′ for the motors 15 and 15 ′ are divided into two from the discharge side of the pump 26 of the hydraulic drive device, and the hydraulic circuits 25 and 25 are respectively connected via the rotation direction control valves 27 and 27 ′ (direction switching valves). ′ And variable pressure control valves 28, 28 ′ (variable relief valves) are interposed between the reciprocating oil passages of the hydraulic circuits 25, 25 ′.

  A signal circuit 32 for transmitting a capacity operation signal is connected to the tilt actuators 15a and 15a 'for operating the swash plate angle as a capacity control mechanism of the hydraulic motors 15 and 15' from the controller 31 so that the capacity can be controlled. Has been. A signal circuit 33 for transmitting a pressure control signal for controlling the opening degree of the control valve is also connected to the operation portions 28a and 28a 'of the variable pressure control valves 28 and 28'. Signal circuits 34a and 34b are also connected to the switching operation solenoids 27a and 27b of 27 and 27 'so that a rotation direction switching signal (either a motor forward rotation signal or a motor reverse rotation signal) is transmitted. ing.

  On the other hand, the hydraulic circuits 25 and 25 'of the respective hydraulic motors are provided with pressure sensors 35a and 35b (36a and 36b) on both sides of the hydraulic motor, so that the hydraulic motors can be forwarded or reversely moved. The signal circuits 37, 37 ′ (38, 38 ′) are connected so that the detected pressure data is transmitted to the controller 31. Yes. The winding diameter data from the drum diameter sensor 17 is also transmitted to the controller 31 by the signal circuit 39. The controller 31 is supplied with a tension force command signal for the striatum from the operation panel 23 of the driving operation unit 20.

  The overhead line facility apparatus 1 configured as described above is on a track S intersecting with a general road using a known means (a rolling device 7 attached by a crossing or the like) to travel on the track S of a railway. The iron wheels 6 and 6 'are placed on the track S so as to travel on the track S).

  When performing overhead wire construction along the track, for example, when installing the trolley wire by replacing the trolley wire, the trolley wire (striated body) is extended while applying a predetermined tension. In other words, the operator arrives at the cockpit 22 of the driving operation unit 20 and controls the controller 31 on the operation panel 23 with respect to the direction of rotation, rotation speed, and line for the wire extension corresponding to the type of the line to be handled. Indicates the tension applied to the body.

  When the operator inputs necessary instructions on the operation panel 23, those instruction signals are input to the controller 31, and pressure is applied to the hydraulic motors 15, 15 'by the hydraulic circuits 25, 25' from the activated hydraulic pump 26. Oil is sent to drive at the same time. At this time, for example, if the rotation of the drum 10 in the feeding direction is a normal rotation and the reverse is the reverse rotation, the signal circuit 34a gives an operation signal to each forward rotation side operation portion 27a of the rotation direction control valves 27 and 27 '. Then, the valve is opened to the forward rotation side, pressure oil is sent from the hydraulic pump 26 to the both hydraulic motors 15 and 15 'through the hydraulic circuits 25 and 25', and rotates forward. Accordingly, when an operation signal is given to each reverse rotation side operation portion 27b of the rotation direction control valves 27, 27 ', the valve is switched to the reverse rotation side. The rotation direction control valves 27 and 27 'return to neutral when the application of the operation signal (energization to the solenoid of the operation unit) is cut off, and the valves are closed, so that the hydraulic motors 15 and 15' are not driven.

  On the other hand, when the hydraulic motors 15 and 15 'are operated, the controller 31 feeds back the pressure data detected by the pressure sensors 35a and 36a provided in the hydraulic circuits 25 and 25'. The winding diameter of the filament is detected, and the winding diameter data is fed back to the controller 31 as well.

  Therefore, if the operator sets the tension on the operation panel 23, the controller 31 transmits the data from the winding diameter sensor 17 of the drum 10 and the pressure data (the hydraulic motor supply pressure oil) by the pressure sensors 35a and 36a in the hydraulic circuit. Pressure data) P1, P2 and pressure data PD1, PD2 stored in advance in the storage unit based on data obtained by comparing and calculating in the calculation unit, the tilt actuators 15a, 15a of the hydraulic motors 15, 15 ' 'And a command signal is sent to the operation part 28a of the variable pressure control valves 28, 28', and the capacity of the hydraulic motors 15, 15 'and the pressure of the hydraulic circuit to the hydraulic motors 15, 15 are controlled.

  Further, when the pressure data P1, P2 by the pressure sensors 35a, 36a in the hydraulic circuit is higher than the minimum adjustment pressure Pv set in the variable pressure control valves 28, 28 ', the rotation direction of one hydraulic motor 15' Supports reverse rotation to the control valve 27 ′ and switches to limit the feeding of the striate and maintain the tension.

  As a result, the linear body fed out from the drum 10 is applied with a predetermined tension and is drawn.

  Therefore, a predetermined set tension F is applied and the wire body is drawn out, and the overhead wire work can be performed in a state where the wire body is not loosened or excessively tensioned, and the work efficiency can be improved.

  In addition, since the hydraulic motors 15 and 15 use variable displacement motors, the tension can be quickly extended while keeping the tension constant by changing the capacity of the motors or changing the pressure of the supply pressure oil.

  Further, in the wire drawing work, the wire drawing operation from the drum 10 may be performed by rotating the drum 10 in the feeding direction as compared with the winding operation. It is possible to work with the pressure setting of the variable pressure control valve set to zero. In this state, since the pressure of the hydraulic circuit to the hydraulic motor becomes zero, the motor is free and the linear body that is freely rotated and wound by the external force applied to the drum 10 can be fed out.

  However, when the wire-drawing operation is performed while the drum 10 is free, resistance of each part of the drive unit and pressure loss in the hydraulic circuit are generated. In addition, smooth drawing may not be possible due to drawing resistance due to the close contact of the filaments during winding. In such a situation, an over-tensioned state occurs. Therefore, in preparation for such a situation, one of the left and right hydraulic motors 15 is driven from the controller 31 by the controller 31 so as to switch the switching solenoids 27a, 27b of the rotational direction control valves 27, 27 'and the variable pressure control valves 28, 28. The motor reverse direction signal and the pressure control signal are instructed to the operation portion 28a of 'and the rotational direction control valves 27 and 27' and the variable pressure control valves 28 and 28 'of the hydraulic circuit 25 or 25' are operated and operated. It can be operated without difficulty by eliminating the pull-out resistance. Even in such a case, the capacities of the hydraulic motors 15 and 15 'are appropriately controlled via the controller 31 by the detection signals from the pressure sensor 36b and the drum diameter sensor 17 in the hydraulic circuits 25 and 25', and set smoothly. The overhead wire work can be performed while maintaining the tension.

  By the way, in general drum rotation at the time of wire drawing, the relationship between the rotational torque T and the pressure P of the pressurized oil supplied to the hydraulic motor is represented by a graph as shown in FIG. Is driven, the torque T cannot be reduced to 0 even if the pressure P = 0 due to various resistances. In other words, a torque of T1 is generated without being able to fall below a certain tension. Thus, as in the present embodiment, two hydraulic motors are used to reversely rotate one hydraulic motor A so as to apply a reverse torque of −T1 to the other hydraulic motor B as shown in FIG. As shown in (b), the torque T can be set to zero in a state where the pressure is zero.

  In order to perform the work of winding the wire rod around the drum, the hydraulic motor 15 may be rotated by the control device 30. For this operation, a command signal from the controller 31 is sent to the rotation control valves 27, 27 '. The valve is switched so as to be transmitted to the operation unit 27b. Then, the oil passages of the hydraulic circuits 25 and 25 ′ are switched, and the hydraulic motors 15 and 15 ′ are driven to rotate forward.

  Regarding the winding operation, since the driven to the hydraulic motors 15 and 15 ′ does not occur, control is performed so as to increase the pressure of the hydraulic circuit to the hydraulic motors 15 and 15 ′ according to the measurement of the drum winding diameter sensor 17. Thus, by increasing the rotational torque of the drum, it is possible to prevent the linear body wound up from being wound around the drum 10 in a slack state and to be wound correctly. At this time, the rotational torque T of the drum can be changed as shown in FIG. 9 by combining a plurality of hydraulic motors.

  Further, since the torque can be changed by changing the capacity of the hydraulic motors 15 and 15 'arranged on the left and right of the drum 10, as shown in FIG. 9, the hydraulic motor A (one hydraulic motor) and the hydraulic pressure are changed. When the motor B (the other hydraulic motor) is set to the maximum capacity, the state shown in FIG. Further, when the capacity of the hydraulic motor A is set to the maximum capacity and the capacity of the hydraulic motor B is set to the minimum capacity, the state shown in FIG. When both the hydraulic motor A and the hydraulic motor B are set to the minimum capacity, the state shown in FIG. Further, when the hydraulic motor A is set to the minimum capacity and the hydraulic motor B is driven (pressure 0), the generation of rotational torque is shifted as shown in FIG. In the case of d, it indicates that when the hydraulic motor is driven, pressure loss and mechanical loss occur, and therefore, rotational torque is not generated unless the driving pressure of the hydraulic motor A is increased to a certain level or more. Yes. For this reason, there is an advantage that the drum can be driven under various conditions by changing the combination of driving of the hydraulic motor, and the work can be performed under the optimum conditions according to the work situation.

  Next, FIG. 10 is a hydraulic control circuit diagram showing another embodiment of drum driving. In this embodiment, the drum-driven hydraulic motor is driven by a plurality of units on one side with respect to the drum, and other configurations are the same as those in the above-described embodiment. The same reference numerals as those in the embodiment are attached and detailed description is omitted.

  In this embodiment, the power from the two hydraulic motors 15, 15 ′ is transmitted to the drum 10 by the gear mechanism 40 to the rotary shaft on one side thereof. As the support means for the drum 10, for example, as in the above-described embodiment, the bearing means 12, 12 A that supports the rotation support members 16, 16 that can be advanced and retracted in the axial direction, although not shown (only reference numerals are given) It is supported on the support frame 11 as possible. The two hydraulic motors 15 and 15 'are connected to the gear 41 on the rotary shaft 16' and the hydraulic motor on a bearing bracket (formed so as to support the two hydraulic motors) provided as one bearing means 12A. The output gears 42 and 42 are supported so as to move together. Hydraulic circuits 25 and 25 ′ are connected to the hydraulic motors 15 and 15 (variable displacement type) from a hydraulic pump 26 via rotation direction control valves 27 and 27 ′. Further, variable pressure control valves 28 and 28 'are arranged in the hydraulic circuits 25 and 25', respectively. Each device and the hydraulic circuit are connected to a controller 31 to exchange signals.

  In the embodiment configured as described above, during normal operation, the control is performed as described above, and both the hydraulic motors 15, 15 ′ are driven to rotate the gear 41 on the rotating shaft 16 ′ to drive the drum 10. To do. Accordingly, the driving force from both hydraulic motors 15 and 15 'is transmitted to the rotating shaft 16' of the drum 10.

  When the rotational torque of the drum 10 is changed depending on the operating condition, the optimum conditions are set by changing the supply pressure to the hydraulic motors 15 and 15 'and changing the capacity of the hydraulic motor as described above. What is necessary is just to set and about the effect, the function similar to the thing of the said embodiment can be exhibited.

  In the above description, the case where two hydraulic motors are used to drive the drum has been described. However, if necessary, two or more hydraulic motors may be used when driving on one side. In this way, it is possible to carry out more precise control during driving. When two or more hydraulic motors are used, an independent hydraulic circuit is provided for each hydraulic motor.

  Further, in accordance with the gist of the present invention, not only a device that is used by being mounted on a vehicle that can travel on a track as in the above-described embodiment, but also a communication line that is mounted on a vehicle that travels on a general public road. Applicable to power line facilities. Furthermore, it can be adopted as a stationary type when it is installed on the ground or the like and handles a linear body such as a cable. It goes without saying that such a stationary type also belongs to the technical scope of the present invention.

The whole front view of one embodiment of an overhead line facility device by the present invention Front view showing the winding drum of the filament and its supporting part AA side view of FIG. Control system diagram by control device of overhead wire facility apparatus of this embodiment Hydraulic control circuit diagram of the control device that controls the driving of the drum Flowchart for extending the striatum Flow chart for winding the striatum A graph showing the relationship between the drum rotation torque and the hydraulic motor supply pressure during wire drawing Graph showing the change in torque due to the combination of hydraulic motor drive conditions during winding Hydraulic control circuit diagram showing another embodiment of drum drive

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Overhead facility apparatus 2 Car body 10 Drum 11 Support stand 12 Bearing means 14 Bearing bracket 15 Hydraulic motor (variable capacity type hydraulic motor)
15a Tilt actuator 16 Rotation support member 16 'Rotating shaft 17 Drum diameter sensor (winding diameter sensor)
DESCRIPTION OF SYMBOLS 20 Operation part 22 Driver's seat 23 Operation panel 26 Hydraulic pump 27, 27 'Rotation direction control valve 28, 28' Variable pressure control valve 30 Controller 31 Controller 35a, 35b Pressure sensor 40 Gear mechanism

Claims (7)

An overhead line facility device for performing wire drawing and winding work of a wire body,
The hydraulic drive means includes a plurality of variable displacement hydraulic motors as a drum drive, a rotation direction control valve, and a pressure control valve, and a linear body handled when driving the drum maintains a required tension. An overhead line facility apparatus comprising a control means for a hydraulic drive means for slackening. An overhead line facility device for performing wire drawing and winding work of a wire body,
A plurality of variable displacement hydraulic motors are used as the hydraulic drive means for driving the drum, and a rotational direction control valve and a pressure control valve are interposed in the hydraulic circuit from the hydraulic supply source to the hydraulic motor. A drum winding diameter sensor that detects the winding diameter of the wire rod and transmits the winding wire diameter data to the controller is provided, and the drive of the hydraulic motor is controlled via the controller in response to an operator command to control the tension of the wire rod. A control device for an overhead line facility device, characterized in that it can be set.   Each data signal from the pressure sensor in the hydraulic circuit and the capacity sensor of the hydraulic motor is processed by a calculation unit of the controller, and the capacity of the hydraulic motor is extended from the drum to the filament with an appropriate tension according to a command from the controller. It controls so that a wire and winding may be carried out, The control apparatus of the overhead line facility apparatus of Claim 1 or Claim 2 characterized by the above-mentioned.   The pressure control valve is a variable pressure control valve, and the tension force of the linear member at the time of wire drawing / winding set by the operator is the pressure instruction command from the controller to the variable pressure control valve and the capacity to the hydraulic motor. The control apparatus for an overhead line facility apparatus according to claim 1 or 2, wherein the hydraulic motor is driven and set by an instruction command.   A rotation direction instruction command is selectively issued to a rotation direction control valve provided in a hydraulic circuit from the controller to each hydraulic motor, and a reverse rotation command is transmitted to at least one of the plurality of hydraulic motors. The apparatus for controlling an overhead line facility apparatus according to claim 2, wherein the rotational force is controlled.   The pressure control valve is a variable pressure control valve, and at the time of wire drawing, the pressure instruction command of the variable pressure control valve is set to 0 with respect to a plurality of drum-driven hydraulic motors, and the drum is drawn in the direction of at least one hydraulic motor. Or the control apparatus of the overhead line facility apparatus of Claim 2 made to rotate in a winding direction.   7. The drum according to claim 2, wherein a variable displacement hydraulic motor is connected to both ends of the rotation shaft of the drum, and the drum rotates while being controlled to an appropriate rotational torque by a command from a controller. Control device for overhead line facility equipment.

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