CN205662161U - Frame winch tension control system - Google Patents

Abstract

The utility model discloses a frame winch tension control system belongs to tension control technical field. The machine comprises a motor, servo driver, still include tension controller, wherein, servo driver is connected with the motor, tension controller sets up on the cable, tension controller and servo driver are connected, the drum that the motor drove the frame winch rotates, the drum rotates, tension controller surveys the tension of getting on the cable on the cable, servo driver surveys tension value of getting and the tension value of setting for and carries out the comparison, the rotational speed that servo driver passes through the control motor drives the drum rotation, thereby reach the mesh of tension automatically regulated control, tension controller includes tension detector and tension reader, the tension detector is located the cable, carry the tension value that detects and give the tension reader, the tension reader is connected with servo driver. The utility model discloses can realize that the tensile automatic control of frame winch does not need artifical the participation, improve production efficiency, save the cost.

Description

A kind of frame winch tension control system

Technical field

This utility model relates to tension control technology field, particularly relates to a kind of frame winch tension control system.

Background technology

Along with electric wire industrial expansion both domestic and external, user manufactures equipment frame wire twisting equipment to electric wire Demand increasing, control to require more and more higher to the control accuracy of equipment and laying tension, particularly produce big specification, Long length, the frame type stranding machine of high voltage cable, had higher for affecting the laying tension of one of the key factor of cable quality Requirement.In prior art, the payoff tensioner of domestic frame wire twisting equipment uses Corii Bovis seu Bubali band towing capstan to realize tension force Control, but this method is not durable and easily lost efficacy, cause the phenomenons such as unwrapping wire fracture of wire, filoselle, stranded tight, jumping stock.

Torque or tension control system have a wide range of applications at industrial circle, and tension force controls typically there are two kinds of approach, and one Being to form tension force by the speed difference of two power points, two is directly to control torque to form tension force.Regulate by speed difference and open The system of power, needs tension controller, but size volume initialization, stop, accelerating, slow down, stop time can not accomplish tension force Stable, the quality of output product can be affected.

Chinese utility model patent, Authorization Notice No.: CN 202829147 U, authorized announcement date: 2013.03.27, open A kind of electronic paying-off tension control device of frame winch, includes slowspeed machine, adjusting screw rod, support, adjustment seat, guiding Bar, polished rod, positioning sleeve, adapter sleeve, tension band, tension pulley, tooth bar, support, contact rotational potentiometer, little gear, on support It is rotatablely equipped with adjusting screw rod, support is also equipped with the guide post parallel with adjusting screw rod, adjustment seat is located at and guide post The pilot hole coordinated, the screw coordinated with adjusting screw rod, the lower end of adjustment seat fixedly mounts the polished rod that oriented side extends, polished rod Upper isomorphism positioning sleeve is installed with several spaced adapter sleeve, and adapter sleeve is connected with the tension band fixation on tension pulley, Adjustment seat upper end is provided with the little meshed transmission gear of tooth bar, tooth bar and contact rotational potentiometer, and adjusting screw rod is by low speed electricity Machine drives.Its weak point is: 1) this patent utilization motor controls, and by adjusting tension band degree of tightness on tension pulley, unites One size adjusting each drum tension force, abrasion of generating heat that tension band use is of long duration；2) tension band needs to change, otherwise on time Tension band can be caused to rupture, and tension force is uncontrollable, it may occur that work safety accident；3) replacing of tension band, wastes time and energy, shadow Ring the normal production schedule, cause production efficiency low.

Utility model content

1. utility model to solve the technical problem that

Frame winch tension force for prior art controls unstable problem, and this utility model provides a kind of frame winch and opens Force control system.It is stable that it can control cable stretch, and effectively regulates its Tensity size, makes cable firmer, resistance to With, improve its quality.

2. technical scheme

For solving the problems referred to above, the technical scheme that this utility model provides is:

A kind of frame winch tension control system, it includes motor, servo-driver, also includes tension controller, wherein, watch Taking driver to be connected with motor, tension controller is arranged on cable, and tension controller is connected with servo-driver.

The drum of driven by motor frame winch rotates, and drum rotates, and tension controller measures the tension force on cable on cable, And the tension value measured is transferred to servo-driver, the tension value that servo-driver measures compares with the tension value of setting Relatively, servo-driver drives drum to rotate by controlling the rotating speed of motor, adjusts the tension force on cable, thus it is automatic to reach tension force The purpose that regulation controls.

Preferably, tension controller includes tension detector and tension force reader, and tension detector is positioned on cable, will inspection The tension value measured flows to tension force reader, and tension force reader is connected with servo-driver.

Preferably, under servo-driver is operated in torque mode.

Preferably, tension controller is tensiometer, and tensiometer measures tension force on cable, and tension value is transferred to servo drives Dynamic device.

Preferably, motor is servomotor, and servomotor is from lowest speed to can steadily operate the most at a high speed, and torque ripple is wanted Little, during low speed, there is stable speed and without creeping phenomenon；There is the overload capacity of big long period, it is possible to meet low speed big The requirement of torque.

Preferably, electrical energy recovery device includes that chain, gear and electromotor, the output shaft of motor (1) are provided with gear, tooth Wheel is connected with the power shaft of electromotor by chain.

Preferably, the electric energy that electromotor sends feeds back to electrical network after inversion.

Described inversion feedback link is the control structure of two close cycles, and outer shroud is Voltage loop, controls DC bus-bar voltage and maintains In the size set, internal ring is electric current loop, controls inverter current, and inverter current is to enter respectively according to real component and idle component Row controls, and by measuring the phase place of line voltage, completes the meritorious of inverter current and the decomposition of idle component, with line voltage The component that phase place is identical is real component, orthogonal to that for idle component, by meritorious and the control of idle component, it is achieved Intended power factor.

Preferably, the electric energy that electromotor sends is stored in accumulator, and accumulator provides direct current for frame winch control system 12V and 24V working power.

3. beneficial effect

The technical scheme using this utility model to provide, compared with prior art, has the advantages that

(1) drum of driven by motor frame winch of the present utility model rotates, and drum rotates, and tension controller is surveyed on cable Tension force on power taking cable, and the tension value measured is transferred to servo-driver, tension value that servo-driver measures and setting Tension value compare, servo-driver drives drum to rotate by controlling the rotating speed of motor, adjusts the tension force on cable, from And reach the purpose of tension force auto-adjustment control；

(2) servomotor of the present utility model is from lowest speed to can steadily operate the most at a high speed, and torque ripple is little, low speed Time, there is stable speed and without creeping phenomenon；There is the overload capacity of big long period, it is possible to meet wanting of low speed high torque Ask；

(3) this utility model is capable of automatically controlling of frame winch tension force and need not manually participate in, it is ensured that safety is raw Produce, save labour force, improve production efficiency, provide cost savings；

(4) structural principle of the present utility model is simple, cost of manufacture is low, be easily achieved.

Accompanying drawing explanation

Fig. 1 is theory diagram of the present utility model；

Fig. 2 is tension controller schematic diagram of the present utility model；

Fig. 3 is the connection diagram of drum and motor.

Label in figure:

1, motor；2, drum；11, tension detector；12, tension force reader.

Detailed description of the invention

For further appreciating that content of the present utility model, in conjunction with drawings and Examples, this utility model is described in detail.

Embodiment 1

In conjunction with Fig. 1-2, a kind of frame winch tension control system, including motor 1, servo-driver, also include tension force control Device, wherein, servo-driver is connected with motor, and tension controller is arranged on cable, and tension controller is with servo-driver even Connect.The drum of driven by motor frame winch rotates, and drum 2 rotates, and the cable on drum 2 carries out the work of uncoiling and rolling, tension force Controller measures the tension force on cable on cable, and the tension value measured is transferred to servo-driver, and servo-driver is surveyed The tension value taken compares with the tension value of setting, and servo-driver drives drum to rotate by controlling the rotating speed of motor, adjusts Tension force on whole cable, thus reach the purpose of tension force auto-adjustment control.

Embodiment 2

The present embodiment is similar to embodiment 1, and wherein difference is, tension controller includes tension detector 11 and opens Power reader 12, tension detector 11 is positioned on cable, and the tension value detected flows to tension force reader 12, and tension force reads Device 12 is connected with servo-driver.

Embodiment 3

The present embodiment is similar to embodiment 1, and wherein difference is, servo-driver is operated under torque mode.Watch The encoder output and the motor cable that take driver are connected on the corresponding interface of motor respectively, and servo-driver can be accounted for by regulation The mode of empty ratio changes size of current, and then changes the level of torque of motor, then changes the big of the power that is applied on drum 2 Little, reach to regulate the purpose of cable strain.

Electricity is controlled by the method changing the ratio (i.e. dutycycle) of motor 1 armature voltage ON time and conduction time Machine 1 speed, i.e. PWM controls.

U₀=D E_a (1)

The electromotive force E that motor 1 sends_a, dutycycle:

$D=\frac{t_1}{T},$

After then the PWM through motor 1 regulates, voltage is:

U₀=D E_a=C_eΦ n,

$n=\frac{D\·E_a}{C_e\mathrm{\Φ}}---\left(2\right)$

Wherein, n is motor speed, E_aIt is armature electromotive force, C_eBeing back EMF constant, Φ is magnetic flux.

It follows that the rotating speed of motor 1 can be regulated by changing dutycycle D.

T=C_TΦI_a,

By formula:

U₀=I_aR,

And formula (1) can obtain:

$T=\frac{{\mathrm{DC}}_T{\mathrm{\ΦE}}_a}{R}---\left(3\right)$

Wherein, I_aBeing armature supply, T is electromagnetic torque, C_TBeing moment coefficient, D is dutycycle, and Φ is magnetic flux, E_aIt it is armature Electromotive force, R is resistance.

It follows that electromagnetic torque T can be changed by changing dutycycle D,

T=F × r,

Wherein, r is motor shaft radius, changes dutycycle D and just can change power F on motor shaft, and then change drum 2 rotates Suffered resistance, reaches to regulate the purpose of cable strain then.

Embodiment 4

The present embodiment is similar to embodiment 1, and wherein difference is, tension controller is tensiometer, and tensiometer measures Tension force on cable, and tension value is transferred to servo-driver.

Embodiment 5

The present embodiment is similar to embodiment 1, and wherein difference is, motor 1 is servomotor, and servomotor is from minimum Speed can steadily operate to high speed, and torque ripple is little, during low speed, have stable speed and without creeping phenomenon；Have big The overload capacity of long period, it is possible to meet the requirement of low speed high torque.

The present embodiment is capable of automatically controlling of frame winch tension force and need not manually participate in, it is ensured that safety in production, joint Save labour force, improve production efficiency, provided cost savings.

Embodiment 6

The present embodiment is similar to embodiment 1, and wherein difference is, electrical energy recovery device includes chain, gear and sends out Motor, the output shaft of motor 1 is provided with gear, and gear is connected with the power shaft of electromotor by chain.

Embodiment 7

The present embodiment is similar to embodiment 1, and wherein difference is, the electric energy that electromotor sends feeds back to after inversion Electrical network.Described inversion feedback link is the control structure of two close cycles, and outer shroud is Voltage loop, and control DC bus-bar voltage maintains and sets Fixed size, internal ring is electric current loop, controls inverter current, and inverter current is to control respectively according to real component and idle component System, by measuring the phase place of line voltage, complete the meritorious of inverter current and the decomposition of idle component, with electric network voltage phase Identical component is real component, orthogonal to that for idle component, by meritorious and the control of idle component, it is achieved expection Power factor.

Embodiment 8

The present embodiment is similar to embodiment 1, and wherein difference is, the electric energy that electromotor sends is stored in accumulator In, accumulator provides direct current 12V and 24V working power for frame winch control system.Electric energy is become to recycle changes mechanical energy, Save resource.

Schematically being described this utility model and embodiment thereof above, this description does not has restricted, accompanying drawing Shown in be also one of embodiment of the present utility model, actual structure is not limited thereto.So, if this area Those of ordinary skill enlightened by it, creating in the case of objective without departing from this utility model, designing without creative The frame mode similar to this technical scheme and embodiment, all should belong to protection domain of the present utility model.

Claims (8)

1. a frame winch tension control system, it includes motor (1) and servo-driver, it is characterised in that also include tension force Controller, wherein, servo-driver is connected with motor (1), and tension controller is arranged on cable, and tension controller drives with servo Dynamic device connects.

A kind of frame winch tension control system the most according to claim 1, it is characterised in that tension controller includes tension force Detector (11) and tension force reader (12), tension detector (11) is positioned on cable, flows to the tension value detected open Power reader (12), tension force reader (12) is connected with servo-driver.

A kind of frame winch tension control system the most according to claim 2, it is characterised in that servo-driver is operated in and turns Under square pattern.

A kind of frame winch tension control system the most according to claim 1, it is characterised in that tension controller is tension force Instrument, tensiometer measures the tension force of cable, and tension value is transferred to servo-driver.

A kind of frame winch tension control system the most according to claim 1, it is characterised in that electrical energy recovery device includes chain Bar, gear and electromotor, the output shaft of motor (1) is provided with gear, and gear is connected with the power shaft of electromotor by chain.

A kind of frame winch tension control system the most according to claim 5, it is characterised in that the electric energy warp that electromotor sends Electrical network is fed back to after inversion.

A kind of frame winch tension control system the most according to claim 5, it is characterised in that the electric energy that electromotor sends is deposited Storage is in accumulator, and accumulator provides direct current 12V and 24V working power for frame winch control system.

A kind of frame winch tension control system the most according to claim 1, it is characterised in that motor is servomotor.