CN210064997U - Self-supporting frequency conversion traction winch - Google Patents
Self-supporting frequency conversion traction winch Download PDFInfo
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- CN210064997U CN210064997U CN201822048412.9U CN201822048412U CN210064997U CN 210064997 U CN210064997 U CN 210064997U CN 201822048412 U CN201822048412 U CN 201822048412U CN 210064997 U CN210064997 U CN 210064997U
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Abstract
The utility model belongs to the technical field of mining equipment, concretely relates to self-supporting frequency conversion haulage winch. The supporting device and the transmission system are controlled by the electric control system and the hydraulic system, the supporting device comprises an integral chassis arranged at the lower part and an integral ceiling arranged at the upper part, a heightening seat is arranged above the integral ceiling, and the integral chassis, the integral ceiling and the heightening seat above the integral chassis are connected together through four upright cylinders and a four-bar mechanism. The utility model discloses can improve the colliery by a wide margin and combine the comprehensive efficiency of adopting working face equipment withdrawal, factor of safety is high, and intensity of labour is little, can replace current like product completely, has better marketing prospect.
Description
Technical Field
The utility model belongs to the technical field of mining equipment, concretely relates to self-supporting frequency conversion haulage winch.
Background
The safety and the high efficiency of the support retraction are the key of the retraction of the fully mechanized coal mining face of the coal mine, and the winch is used as the key equipment of the support retraction, so that the significance of optimizing and improving the working performance of the support retraction is great.
At present, a support traction winch for withdrawing a fully mechanized coal mining face of a coal mine is of an integral longitudinal frame type structure, does not have a supporting device, and needs to be anchored or be matched with a single support post for use after being modified. The fully mechanized mining face is usually supported by a fixed mode of 6 single four-pressure prop bodies under the restriction of field working conditions. The position of the winch needs to be frequently moved when the fully mechanized mining equipment is moved and other various electromechanical equipment are carried, the fixing mode is time-consuming and labor-consuming, and large potential safety hazards exist due to the fact that the single body pressure control and detection functions are not available, and the withdrawing efficiency and the safety guarantee of the fully mechanized mining working face are affected.
The multifunctional traction winch integrating support, power, braking, remote control, variable frequency speed regulation, protection and the like is developed aiming at the problems existing in the use process of the existing support withdrawing winch, the winch modularization is realized, the fixing mode is free and flexible, the operation is simple and convenient, the labor intensity is reduced, the withdrawing efficiency and the safety factor of a working face are further improved, and the multifunctional traction winch has important practical significance and good popularization prospect.
Disclosure of Invention
The utility model discloses a solve above-mentioned problem, provide a self-supporting frequency conversion traction winch.
The utility model adopts the following technical proposal: a self-supporting variable-frequency traction winch comprises a supporting device, a transmission system, an electric control system and a hydraulic system, wherein the supporting device and the transmission system are controlled by the electric control system and the hydraulic system, the supporting device comprises an integral chassis arranged at the lower part and an integral ceiling arranged at the upper part, a heightening seat is arranged above the integral ceiling, and the integral chassis, the integral ceiling and the heightening seat above the integral chassis are connected together through four upright cylinders and a four-bar mechanism.
The transmission system comprises a cycloid device, a winching device and a reduction box, wherein the cycloid device, the winching device and the reduction box are fixedly arranged on the integral chassis in sequence from the front end to the rear end, and the reduction box and the variable frequency motor are connected together through a connecting flange and a shaft sleeve which are integrated at the tail part of the reduction box; the grinding mill is meshed and connected with the reduction gearbox through an external gear in a matched design; the winching and the cycloid are connected together through a chain wheel in a matched design; a multi-disc wet brake is mounted on a secondary speed reducing wheel of the reduction gearbox, and an oil tank of the hydraulic system is integrated with the integral chassis and is used as a part of the chassis structure.
Further, the hydraulic system comprises a hydraulic pump, a high-pressure filter, an oil return filter and an electromagnetic valve group, an oil suction port S of the hydraulic pump is connected with an oil suction port corresponding to an oil tank through a pipeline, an oil drainage port T is connected with an oil drainage port of the oil tank through a pipeline, an outlet A of the hydraulic pump is connected with an inlet of the high-pressure filter through a pipeline, an X port of the hydraulic pump is connected with an inlet LS of the electromagnetic valve group through a pipeline, an outlet of the high-pressure filter is connected with an inlet P of the electromagnetic valve group through a pipeline, a front four-way valve of the electromagnetic valve group is respectively connected with four upright post oil cylinders through pipelines, an A port of each front four-way valve is connected with an oil cylinder rodless cavity, a B port of each four-way valve is connected with an oil cylinder rod cavity, an A port of a fifth-way valve of the electromagnetic valve group is blocked, a B port, the check valve II is respectively connected with the pressure sensor II and two upright post oil cylinders on the front side in parallel through pipelines, the check valve III is respectively connected with the pressure sensor III and two upright post oil cylinders on the rear side in parallel through pipelines, a sixth connection valve A port of the electromagnetic valve group is blocked, a B port is connected with a P port of the braking valve group through a pipeline, a T port of the braking valve group is connected with an oil drainage port of an oil tank through a pipeline, the A port is respectively connected with the pressure sensor V and a piston cavity of a multi-disc wet brake in parallel through a pipeline, a seventh connection A port of the electromagnetic valve group is connected with an inlet of a driving motor of a filling pump through a pipeline, the B port is connected with a check valve IV and a safety valve in parallel through pipelines, an oil suction port of the filling pump is connected with an oil filling pipe, an outlet of the safety valve, an outlet of the driving motor and an oil filling outlet are connected back to an oil filter through, the outlet of the cooler is connected with an oil return filter through a pipeline, the eighth connection plug of the electromagnetic valve group is used for standby, and the oil return port R is connected with the oil return filter through a pipeline.
Further, an electrical control box of the electrical control system is arranged on an electrical control box mounting frame which is positioned above the variable frequency motor and fixedly arranged on the integral chassis, the electrical control box is connected with a remote control system, and the remote control system controls the variable frequency motor by controlling the electrical control box, so that the winching starting and stopping, the cable winding and unwinding, the variable frequency speed regulation and the lifting of the supporting device are realized; the emergency stop button, the signal lamp, the voice alarm and the electric accessory of the fluorescent lamp are arranged on the whole device.
Through the organic combination of the mechanisms and the systems, the special winch for the return of the coal mine fully-mechanized coal mining face equipment, which integrates the self-supporting fixing and traction functions, is formed. The winch can realize quick and convenient self-fixing before working, has automatic monitoring, locking and protecting functions in the working process, and realizes remote control operation.
Compared with the prior art, the beneficial effects of the utility model are that: the problem that the existing equipment is withdrawn to the fully mechanized coal mining face equipment in the coal mine is effectively solved. The fixing device is organically combined with the winch, so that the working efficiency and the safety and reliability are greatly improved, and meanwhile, the winch top plate is protected. The winch is provided with a heavy-duty swing device and a rope clamping device, and can effectively avoid rope disorder and extrusion blockage of a steel wire rope. The whole machine realizes the remote control operation of leaving the machine, and effectively ensures the personal safety of the working personnel. An electro-hydraulic comprehensive monitoring and protecting system is designed, and the safety and reliability of the equipment are improved. The comprehensive efficiency of fully mechanized coal mining face equipment withdrawal of the coal mine can be greatly improved, the safety coefficient is high, the labor intensity is low, the existing similar products can be completely replaced, and the market popularization prospect is good.
Drawings
FIG. 1 is a basic construction of a self-supporting variable frequency traction winch;
FIG. 2 is a structural schematic of a supporting device of the self-supporting variable frequency traction winch;
FIG. 3 is a drive train of the self-supporting variable frequency drawworks;
FIG. 4 is a diagram of the electrical system components and layout of the self-supporting variable frequency drawworks;
FIG. 5 is a diagram of the electrical system components and layout of the self-supporting variable frequency traction winch;
FIG. 6 is a schematic structural diagram I of an integral chassis of the self-supporting variable frequency traction winch;
FIG. 7 is a schematic structural view II of an integral chassis of the self-supporting variable frequency traction winch;
FIG. 8 is a schematic structural diagram III of an integral chassis of the self-supporting variable frequency traction winch;
FIG. 9 is a schematic diagram I of a four-bar linkage of the self-supporting variable frequency traction winch;
FIG. 10 is a schematic view II of a four-bar linkage of the self-supporting variable frequency traction winch;
FIG. 11 is a hydraulic system principle of the self-supporting variable frequency traction winch;
FIG. 12 is an enlarged view of a portion of FIG. 11;
in the figure, 1-an integrated chassis, 2-an upright post oil cylinder, 3-a four-bar linkage mechanism, 4-an integrated ceiling, 5-an elevated seat, 6-an electric control box, 7-a cycloid device, 8-a winching device, 9-a reduction box, 10-a multi-disc wet brake, 11-a variable frequency motor, 12-a hydraulic pump, 13-an oil tank, 14-a high-pressure filter, 15-an oil return filter, 16-a safety valve, 17-an electromagnetic valve group, 18-a pressure sensor II, 19-a pressure sensor III, 20-an upright post oil cylinder fluid-supplementing energy accumulator, 21-a pressure sensor IV, 22-a pressure sensor V, 23-a brake-releasing valve group, 24-a pressure sensor I, 26-a cooler, 27-a frequency converter cooling channel and 28-a one-way valve I, 29-one-way valves II, 30-one-way valves III, 31-one-way valves IV, 32-headlamp, 33-voice alarm, 34-signal lamp, 35-fluorescent lamp, 36-emergency stop button and 37-electric cabinet mounting rack.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in the figure, the self-supporting variable-frequency traction winch mainly comprises an integral chassis 1, four upright cylinders 2, a four-bar mechanism 3, an integral ceiling 4, a heightening seat 5, an electric control box 6, a winching 7, a cycloid device 8, a reduction box 9, a multi-disc wet brake 10, a variable-frequency motor 11, relevant connecting pin shafts, bolts and the like. The winch realizes the integrated design of self-supporting fixing and traction functions, the winching and reeling cable can be subjected to frequency conversion and speed regulation, each action and function can be remotely controlled and operated, and an electrical system has the functions of automatic parameter detection and protection.
Specifically, the self-supporting variable-frequency traction winch is organically combined by a supporting device, a transmission system, an electric control system and a hydraulic system. The lower part of the supporting device is an integral chassis 1, the upper part of the supporting device is an integral ceiling 4 and a heightening seat 5 fixedly installed above the integral ceiling, and the upper part and the lower part of the supporting device are organically connected together through four upright cylinders 2 and a four-bar mechanism 3 to form a lifting supporting mechanism. The spherical surface a and the pin hole b designed at the bottom of each upright post oil cylinder are respectively matched and installed with ball sockets e1, e2, e3 and e4 which are designed correspondingly to the integral chassis 1, and pin holes f1, f2, f3 and f4 which are designed correspondingly by a pin shaft I, and the spherical surface c and the pin hole d designed at the top of each upright post oil cylinder piston rod are respectively matched and installed with ball sockets g1, g2, g3 and g4 which are designed correspondingly to the integral ceiling 4, and pin holes h1, h2, h3 and h4 which are designed correspondingly to the integral ceiling 4 by a pin shaft II; the pin holes i1, i2, i3 and i4 of the four-bar linkage mechanism 3 are matched and installed with the pin holes j1, j2, j3 and j4 which are respectively designed corresponding to the integral chassis 1 by using a pin shaft III, and the pin holes i5 and i6 of the four-bar linkage mechanism 3 are matched and installed with the pin holes k1 and k2 which are designed corresponding to the integral ceiling 4 by using a pin shaft IV; the integral ceiling 4 and the heightening seat 5 are installed in a matched mode through screw holes p and through holes q and fastened through bolts.
The grinding wheel 7, the cycloid device 8 and the reduction box 9 of the transmission system are fixedly arranged on the integral chassis 1 from the front end to the rear end in sequence. The variable frequency motor 11 and the reduction box 9 are installed in a matched mode through connecting flanges V and VI and spline shafts IX and spline sleeves XI and are fastened through bolts; the grinding wheel 7 is meshed with the reduction gearbox 9 through an external gear in a matched design; the winching 7 and the cycloid device 8 are connected together by a chain through a chain wheel in a matched design; the multi-disc wet brake 10 and the reduction gearbox 9 are installed in a matched mode through a spline shaft X, a spline sleeve XII and flanges VII and VIII and are fastened through bolts; the winching 7 and the chassis 1 are matched and mounted with screw holes l1-l16 through mounting holes o1-o16 and are fastened by bolts; the reduction gearbox 9 and the chassis 1 are matched and mounted with screw holes m1-m16 through mounting holes n1-n14 and are fastened by bolts. After the variable frequency motor 11 is started, power is transmitted to the winching 7 through the reduction gearbox 9 to drive the winching 7 to rotate, and meanwhile, the winching drives the cycloid device 8 through chain transmission, so that the winching rotates one circle, and the steel wire rope is driven to move one rope distance by the cycloid device.
An electric control box 6 of the electric control system is arranged above the variable frequency motor 11 and fixedly arranged on a mounting rack of the integral chassis 1, and the remote control system controls the variable frequency motor 11, the electromagnetic valve group 14 and the brake valve group 15 through controlling the electric control box, so that the functions of starting and stopping the winching 7, retracting a cable, regulating the speed by frequency conversion, lifting the supporting device and the like are realized. In addition, the electric system is also provided with a voice alarm, a detection sensor, an emergency stop button (a remote control emergency stop button and a machine body emergency stop button), an illuminating lamp, a safety signal lamp and the like, and all electric functions of the winch are automatically started when the winch works. The electric system can realize real-time monitoring and display of parameters such as the pressure of the upright post oil cylinder 2, the temperature of a frequency converter in the electric control box 6, the pulling force of the winching 7, the working pressure of the multi-disc wet brake 10, the current and the rotating speed of the variable frequency motor 11, the liquid level and the temperature of a hydraulic oil tank, the current of a pump station motor and the like; and the winch is also provided with locking and protecting functions, so that the winch can work under the condition of meeting the working pressure of the upright post oil cylinder 2, the braking releasing pressure of the multi-disc wet brake 10 and other parameters under a set value. When the winch is in a working state, functions such as the descending of the upright post oil cylinder 2 and the like are automatically locked, and functions such as the tension limiting protection of the winching 7, the current and temperature protection of the electric control box 6 and the variable frequency motor 11, the temperature and liquid level protection of a hydraulic oil tank and the like are automatically started; the pressure monitoring and automatic fluid infusion of the fluid infusion energy accumulator of the upright post oil cylinder 2 and the fluid infusion energy accumulator of the multi-disc wet brake 10 release brake valve group are realized, and the working pressure of two kinds of energy accumulation is ensured to be within the range of a set value under the working state.
The hydraulic tank of the hydraulic system is designed as one piece with the integrated chassis 1 as part of the chassis structure. A pump station is arranged below the electric control box 6 and at the tail of the integral chassis 1, and the electromagnetic valve group, the brake release valve group and the oil cylinder fluid infusion energy accumulator are arranged on an installation frame of the electric control box 6. The hydraulic components and the upright post oil cylinder 2 and other related hydraulic interfaces are connected through hydraulic pipelines to form a hydraulic system. Each loop of the hydraulic system is provided with a safety valve so as to limit the working pressure of the system; the upright post oil cylinder 2 is provided with a high-performance safety valve, and the top plate has an overpressure automatic pressure relief function when being pressed.
Through modular design and integrated design of the mechanisms and the systems, the mechanisms, the systems and the functions are organically combined, and the winch special for the return of the fully mechanized coal mining face equipment integrates self-supporting fixing and traction functions. The winch can realize quick and convenient self-fixing before working, has automatic monitoring, locking and protecting functions in the working process, and realizes remote control operation.
The utility model discloses a theory of operation: after the winch equipment is electrified, the remote control system is used for controlling the electrical control box, further controlling a pump station motor, a variable frequency motor, an electromagnetic valve group and a brake release valve group, and realizing the control of lifting (controlled by lifting of the upright post oil cylinder), starting and stopping of a winching, cable winding and unwinding and variable frequency speed regulation of the supporting device. When the winch is in the working mode, the automatic monitoring and protecting function is started. When the remote control grinder 7 is started, the electric system automatically detects various starting parameters at first, and the grinder can be started only when the parameters such as the pressure of the upright post oil cylinder 2, the brake releasing pressure of the multi-disc wet brake 10 and the like meet the set requirements; the pressure monitoring of the liquid supply energy accumulator of the upright post oil cylinder 2 and the multi-disc wet brake 10 and the automatic operation of the automatic liquid supply system are realized by the brake valve group 15, so that the working pressures of the two kinds of energy accumulation are ensured to be within the range of set values in the working state; meanwhile, the functions of automatic locking of the vertical column oil cylinder 2 descending and the like are automatically started, and the functions of tension limiting protection of the winching 7, current and temperature protection of the electric control box 6 and the variable frequency motor 11, temperature and liquid level protection of the hydraulic oil tank 13, signal lamp, voice alarm and the like are automatically started. When the monitoring parameters do not meet the set requirements, the electric system can perform voice early warning or stop the machine.
The utility model discloses a working process: and placing the winch to the specified position of the fully mechanized mining withdrawing working surface, wherein the bottom plate of the placed position is as flat as possible, and then switching on a power supply for the winch. When the winch works, the breaker of the electrical control box 6 is closed to electrify the winch electrical system, and the remote controller is started; pressing an oil pump button on a remote controller, starting a pump station motor, pressing an upright post lifting button on the remote controller when the oil temperature reaches about 30 ℃, lifting the upright post oil cylinder 2 until the supporting device is contacted with a top plate and then suppressing, and stopping operation when the display of an electric control box 6 displays that the pressure of the upright post oil cylinder 2 reaches the highest set pressure of the system; when the cable is required to be wound and unwound, the cable winding button or the cable unwinding button on the remote control is pressed (the cable winding button or the cable unwinding button is pressed and loosened after the set time is exceeded, and the cable winding button or the cable unwinding button is continuously operated), the acceleration button and the deceleration button on the remote control are pressed during acceleration and deceleration, the gear is increased or decreased once, and the cable winding button or the cable unwinding button is pressed again when the cable winding operation or the cable unwinding operation is required to be stopped. When the equipment runs and an emergency occurs, the emergency stop button of the remote controller or the machine body can be pressed to stop the machine. After the equipment is used, the upright post oil cylinder 2 is lowered to the lowest position, the power supply cable is removed, and then the equipment can be carried away.
The utility model discloses a combine the strutting arrangement of liftable and the chassis of winch organically, realized quick self-supporting fixed with the integrated design of traction function. The designed heavy-duty cycloid device and the rope clamping device can effectively avoid disorder and extrusion blockage of the steel wire rope. The electric system realizes the off-line remote control operation, has the functions of automatic on-line parameter detection and protection, designs the electro-hydraulic comprehensive monitoring and protecting system, and improves the safety and reliability of the equipment. The utility model discloses a can improve the colliery by a wide margin and combine the comprehensive efficiency of adopting working face equipment withdrawal, the operation is convenient, factor of safety is high, and intensity of labour is little, can replace current like product completely.
The hydraulic system comprises a hydraulic pump 12, a high-pressure filter 14, an oil return filter 15 and an electromagnetic valve group 17, wherein an oil suction port S of the hydraulic pump 12 is connected with an oil suction port corresponding to an oil tank 13 through a pipeline, an oil drainage port T is connected with an oil drainage port of the oil tank through a pipeline, an outlet A of the hydraulic pump 12 is connected with an inlet of the high-pressure filter 14 through a pipeline, an X port of the hydraulic pump 12 is connected with an LS port of the electromagnetic valve group 17 through a pipeline, an outlet of the high-pressure filter 14 is connected with an inlet P of the electromagnetic valve group 17 through a pipeline, a front four-way valve of the electromagnetic valve group 17 is respectively connected with four upright post oil cylinders 2 through pipelines, an A port of each front four-way valve is connected with an oil cylinder rodless cavity, a B port of each four-way valve is connected with an oil cylinder rod cavity, a fifth valve A port of each electromagnetic valve group 17 is blocked, a B port is connected with an inlet of a, the check valve II is respectively connected with the pressure sensor II18 and two upright post oil cylinders 2 at the front side in parallel through pipelines, the check valve III is respectively connected with the pressure sensor III19 and two upright post oil cylinders at the rear side in parallel through pipelines, a sixth connection valve A port of the electromagnetic valve group 17 is plugged, a B port is connected with a port P of the brake release valve group 23 through a pipeline, a T port of the brake release valve group is connected with an oil drain port of an oil tank through a pipeline, a port A is respectively connected with the pressure sensor V22 and a piston cavity of the multi-disc wet brake 10 in parallel through a pipeline, a seventh connection A port of the electromagnetic valve group 17 is connected with an inlet of a driving motor of a filling pump through a pipeline, a port B is connected with the check valve IV and a safety valve 16 in parallel through a pipeline, an oil suction port of the filling pump is connected with an oil filling pipe, an outlet of the safety valve, an outlet of the, the outlet of the frequency converter cooling channel 27 is connected with the inlet of the cooler 26 through a pipeline, the outlet of the cooler 26 is connected with the oil return filter 15 through a pipeline, the eighth block of the electromagnetic valve group 17 is used for standby, and the oil return port R is connected with the oil return filter 15 through a pipeline.
Designing an electrical system:
① electric control system, winch electric system is composed of 1 electric control box, 1 frequency conversion traction motor, 1 oil pump motor, 1 set of remote control device, 3 emergency stop buttons, 1 voice light alarm, 1 set of gas alarm (including host and gas sensor), 5 pressure sensor, 1 oil temperature and oil level sensor, 8 electromagnetic valve sets, 1 brake-off electromagnetic valve, 1 fluorescent lamp for support, 2 LED illuminating lamps, 1 safety warning lamp, 3 explosion-proof buttons, PLC is the core control module of winch electric control system, realizes the start/stop of oil pump motor, the cable receiving/releasing, the increasing/decreasing and the illuminating lamp, the voice alarm, the warning lamp, the electromagnetic valve set, and has perfect whole machine and circuit protection function.
② oil pump loop unit, the oil pump loop unit is composed of 1 loop, including 1 breaker, 1 vacuum contactor, 1 motor protector, 1 resistance-capacitance absorber, the breaker is used to control the on-off and short-circuit protection of 660V power supply of the whole main loop, the vacuum contactor is used to control the start and stop of the oil pump motor, the motor protector is used to protect the oil pump motor from overcurrent, phase loss, phase inversion, etc. when the oil pump motor is started, the oil pump button on the main remote controller is pressed after the breaker is in the on position, the contactor of the oil pump motor is controlled to pull in after 3S, the oil pump motor is started, the oil pump motor is pressed again after the oil pump motor is started, the contactor of the oil pump motor is controlled to be off, and the oil pump motor is stopped.
③ power supply unit, which comprises main transformer, isolation transformer, high-voltage fuse, DC power supply, and micro breaker, wherein the main transformer transforms AC660V into AC220V and AC127V, the AC220V is the isolation transformer, intrinsic safety power supply, cooling fan, frequency converter, and transforms the AC220V into DC24V to supply power for the electromagnetic valve, AC127V is the lighting system, gas power breaker, audible and visual alarm, wireless data upload terminal, the isolation transformer transforms AC220V into AC180V to supply power for the remote control receiver, and transforms AC180V into DC24V to supply power for the main control unit PLC and its output I/O, output drive relay, isolation grid and sensor, the high-voltage fuse is located on the primary side loop of the main transformer, and the micro breaker is located on the secondary side loop of the transformer to provide overload and short-circuit protection for each loop.
④ protection unit, which comprises electronic motor protection relay and JB leakage protector, wherein the electronic motor protection relay collects current signal of pump motor loop, and via the processing of electronic circuit, realizes the protection functions of overcurrent, reverse phase, phase loss, three-phase current imbalance and locked rotation of pump motor, the protector monitors the pump motor loop in real time, the output relay contact is immediately disconnected after fault is found, the pump contactor coil is immediately released, the pump motor stops running, and the protector also has 485 communication function, PLC reads the internal information of protector register via 485 communication, and displays the actual running current and fault information of pump motor on the display screen in real time, the leakage protector detects leakage of electricity in the load loop before the pump motor or variable frequency motor is started, and stops starting immediately, and locks the leakage loop, and simultaneously performs uninterrupted insulation monitoring on AC127V control power supply, and detects, the leakage relay is immediately disconnected, and prohibits AC127 JB 127V power supply from supplying power to outside.
⑤ control loop unit composed of PLC (programmable logic controller) and digital input module, digital output module, analog input module, communication module and baffle, PLC special drive relay, where the PLC is the core control module of an electric control system and can be roughly divided into input unit, Central Processing Unit (CPU) and output unit 3, where the input unit is used to receive switching value control information from each switch button, oil pump protector, remote control receiver, gas power-off instrument and other electric parts in the electric control system, the analog module is used to receive analog information of the electric system, and the communication module is used to receive control information of the oil pump protector, remote control device and frequency converter, the Central Processing Unit (CPU) analyzes the signals received by the input module, analog input module and communication module and obtains corresponding control signals by executing its own program, and the output module is used to receive control signals from the Central Processing Unit (CPU) and controls the contactor to close and open, thereby controlling voice alarm, warning light, lighting and electromagnetic valve action.
⑥ the unit is composed of an oil temperature isolation transmitter, an oil level isolation grid, an analog input isolation grid, an intrinsically safe power supply, an isolation relay, a safety warning lamp, an oil temperature and oil level sensor, a pressure sensor, wherein the intrinsically safe isolation grid not only provides 24V power supply for the pressure sensor and the oil temperature sensor, but also improves the safety and insulation of electric appliances because the intrinsically safe isolation grid adopts the measures of pressure limiting, current limiting, isolation, etc., not only can prevent dangerous energy from entering dangerous sites from intrinsically safe terminals, improve the intrinsically safe explosion-proof performance of the system, but also increases the anti-interference capability of the system, greatly improve the reliability of the system operation, PT100 thermal resistance collects the hydraulic oil temperature, converts the temperature value into a resistance value, inputs the resistance value into the oil temperature isolation transmitter, converts the resistance signal into a standard current signal of 4-20 mA after isolation, sends the standard current signal into an analog quantity collection module, displays the hydraulic oil temperature through the PLC, simultaneously provides a high oil temperature protection function for the system, the oil level switch rises under the action of a hydraulic oil float, locks the oil float reaches the position of the oil float switch, locks the switch, inputs the signal into a standard current signal of 4-20 mA after the isolation grid, outputs a digital signal, outputs a warning signal, and controls the PLC flash pressure of the PLC, when the PLC, the PLC stops, the PLC receives the PLC and outputs a pressure signal, the PLC pressure signal, and outputs a pressure signal, and a pressure signal.
⑦ display unit consisting of 1 display, PLC for storing the data information to be displayed in the register of frequency converter, display for reading the data information in frequency converter and displaying the information on display screen, when the system is normal, the running state, running current, system voltage, output voltage, frequency, current, hydraulic oil temperature, column pressure and brake pressure of frequency converter are displayed, when the system is in failure, the failure information of system transmitted from PLC and frequency converter can be displayed for easy processing and solving of various failures.
⑧ frequency conversion traction system, which comprises integrated filter, Hall sensor, buffer resistor, buffer contactor, frequency converter, HMI, frequency conversion motor, and hydraulic oil cooling system, wherein the frequency converter controls the self-cooling frequency conversion motor of 90KW to realize the functions of positive and negative rotation and acceleration and deceleration of the motor, the AC input is connected with the integrated filter to improve the power factor and suppress the higher harmonics, the unique PWM method is adopted to greatly reduce the harmonic voltage, the frequency converter and PLC communicate by shielded twisted-pair cable, and the single end of the shielded layer is grounded, the control loop and the main power output loop are separately wired, and the anti-interference ability of the control loop and the communication loop is improved.
And (4) protection function: the protection function is complete, overload, electric leakage, overheating, low-voltage protection and IGBT basic protection are achieved, the current rapid automatic suppression capability is achieved, and overcurrent and tripping are avoided in the acceleration process and under impact load. The frequency converter power element, the capacitor, the resistor, the transformer and other components generate heat when in operation, the heat dissipation fan is arranged in the electric cabinet, the fan air outlet is right opposite to the air inlet of the frequency converter radiator, the winch is powered on, and the heat dissipation fan starts to dissipate heat of the frequency converter. Dedicated hydraulic oil forced cooling system has been designed to the electric cabinet bottom, and the heat that the power component of frequency conversion produced conducts the electric cabinet heat dissipation bottom plate through the aluminium base board that dispels the heat, through forced cooling system, takes away the heat that the converter produced to realize refrigerated purpose. The frequency converter is a relatively independent system, starting, stopping, positive and negative rotation and speed setting signals of the frequency converter are provided by a PLC control system, the self states of the frequency converter such as frequency converter faults, overheating alarm, frequency converter output frequency, output current and other information are displayed through a remote display terminal HMI, the positive and negative rotation and acceleration and deceleration control of the frequency converter are controlled by the PLC through a communication mode to send control instruction signals, and the PLC acquires the output frequency, output current, bus voltage, output voltage, frequency converter fault signals and other states of the frequency converter through communication.
The pre-traction function: and closing a circuit breaker handle on the left side of the winch electric cabinet, pulling out the emergency stop button, changing three-phase alternating current into direct current voltage by a rectifying circuit of the frequency converter to charge the filter capacitor, outputting a control signal by the frequency converter after the charging is finished, enabling the buffer contactor to be closed, short-circuiting the buffer resistor, and enabling the frequency converter to enter a pre-running state. The action process of the traction system comprises the following steps: the main transmitter controls cable coiling enabling, cable coiling, cable releasing, accelerating and decelerating keys on a control panel to control all actions of the variable-frequency traction system. The cable winding enable key is a safety key with variable-frequency traction action, so that misoperation is prevented; the cable retracting and releasing key controls the positive and negative rotation of the motor; the speed increasing and reducing keys realize the function of motor speed regulation by controlling the output given frequency of the frequency converter. After the cable is wound and enabled, when a cable winding key of the main transmitter is pressed, the PLC can send a trigger signal of 'forward rotation of the frequency converter' to the frequency converter. When a cable releasing key of a main transmitter is pressed down, the PLC sends a trigger signal of 'inverter reversal' to the inverter, the inverter runs according to the preset frequency at the moment, the cable retracting preset frequency is 5Hz, the cable releasing preset frequency is 10Hz, the accelerating time is preset to 20s, and the decelerating time is preset to 5 s.
Traction motor frequency: the cable take-up/pay-off, plus/minus keys on the main transmitter are operated to determine the output frequency of the frequency converter, the cable take-up will provide a maximum 26Hz ac voltage, and the cable pay-off will provide a maximum 100Hz ac voltage. Acceleration and deceleration: there is a delay of 4 seconds from standstill to slow speed, which is controlled by the acceleration time set by the frequency converter. And after receiving the instruction of the main transmitter, the frequency converter accelerates or decelerates in the limited current according to the set starting curve. Under the condition of meeting the actual use working condition, the acceleration and deceleration time is prolonged as much as possible, so that the impact of a winch on the frequency converter is reduced.
Claims (3)
1. The utility model provides a self-supporting frequency conversion traction winch which characterized in that: comprises a supporting device, a transmission system, an electric control system and a hydraulic system, wherein the supporting device and the transmission system are controlled by the electric control system and the hydraulic system,
the supporting device comprises an integral chassis (1) arranged at the lower part and an integral ceiling (4) arranged at the upper part, a heightening seat (5) is arranged above the integral ceiling (4), and the integral chassis (1), the integral ceiling (4) and the heightening seat (5) above the integral ceiling are connected together through four upright oil cylinders (2) and a four-bar mechanism (3);
the transmission system comprises a cycloid device (7), a twisting mill (8) and a reduction box (9), wherein the cycloid device (7), the twisting mill (8) and the reduction box (9) are fixedly installed on the integral chassis (1) in sequence from the front end to the rear end, and the reduction box (9) and the variable frequency motor (11) are connected together through a connecting flange integrated at the tail part of the reduction box and a shaft sleeve; the grinding mill (8) is meshed and connected with the reduction gearbox (9) through an external gear in a matched design; the winching machine (8) and the cycloid device (7) are connected together through a chain wheel in a matched design by a chain; a multi-disc wet brake (10) is arranged on a secondary speed reducing wheel of the speed reducing box (9), and an oil tank (13) of a hydraulic system is integrated with the integral chassis (1) and is used as a part of the chassis structure.
2. The self-supporting variable frequency traction winch of claim 1, wherein: the hydraulic system comprises a hydraulic pump (12), a high-pressure filter (14), an oil return filter (15) and an electromagnetic valve group (17), wherein an oil suction port S of the hydraulic pump (12) is connected with an oil suction port corresponding to an oil tank (13) through a pipeline, an oil drainage port T is connected with an oil drainage port of the oil tank through a pipeline, an outlet A of the hydraulic pump (12) is connected with an inlet of the high-pressure filter (14) through a pipeline, an X port of the hydraulic pump (12) is connected with an LS port of the electromagnetic valve group (17) through a pipeline, an outlet of the high-pressure filter (14) is connected with an inlet P of the electromagnetic valve group (17) through a pipeline, a front four-way valve of the electromagnetic valve group (17) is respectively connected with four upright post oil cylinders (2) through pipelines, an A port of each front four-way valve is connected with an oil cylinder rodless cavity, a B port of each valve is connected with an oil cylinder rod, the check valve I is respectively connected with a check valve II, a check valve III, a pressure sensor I (24) and a column oil cylinder fluid infusion energy accumulator (20) in parallel through pipelines, the check valve II is respectively connected with the pressure sensor II (18) and two column oil cylinders (2) at the front side in parallel through pipelines, the check valve III is respectively connected with the pressure sensor III (19) and two column oil cylinders at the rear side in parallel through pipelines, a sixth connection valve A port of an electromagnetic valve group (17) is blocked, a B port is connected with a P port of a brake release valve group (23) through a pipeline, a T port of the brake release valve group is connected with an oil drain tank port through a pipeline, the A port is respectively connected with a pressure sensor V (22) and a piston cavity of a multi-disc wet brake (10) in parallel through a pipeline, a seventh connection A port of the electromagnetic valve group (17) is connected with an inlet of a driving motor of a filling pump through a pipeline, and a B port is connected, the oil suction port of the oil filling pump is connected with an oil filling pipe, the outlet of the safety valve, the outlet of the driving motor and the oil filling outlet are connected with an oil return filter through a pipeline, the outlet of the one-way valve IV is connected with the inlet of a cooling channel (27) of a frequency converter through a pipeline, the outlet of the cooling channel (27) of the frequency converter is connected with the inlet of a cooler (26) through a pipeline, the outlet of the cooler (26) is connected with an oil return filter (15) through a pipeline, the eighth connection plug of the electromagnetic valve group (17) is reserved, and the oil return port R is connected with the oil return filter.
3. The self-supporting variable frequency traction winch of claim 1, wherein: an electric control box (6) of the electric control system is arranged above the variable frequency motor (11) and fixedly arranged on an electric control box mounting frame of the integral chassis (1), the electric control box (6) is connected with a remote control system, and the remote control system controls the variable frequency motor (11) by controlling the electric control box (6) to realize the starting and stopping of the winching (8), the cable reeling and unreeling, the variable frequency speed regulation and the lifting of the supporting device; the emergency stop button, the signal lamp, the voice alarm and the electric accessory of the fluorescent lamp are arranged on the whole device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822048412.9U CN210064997U (en) | 2018-12-07 | 2018-12-07 | Self-supporting frequency conversion traction winch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822048412.9U CN210064997U (en) | 2018-12-07 | 2018-12-07 | Self-supporting frequency conversion traction winch |
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| CN210064997U true CN210064997U (en) | 2020-02-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110127546A (en) * | 2018-12-07 | 2019-08-16 | 中国煤炭科工集团太原研究院有限公司 | A kind of self-supporting inverter-fed traction winch |
-
2018
- 2018-12-07 CN CN201822048412.9U patent/CN210064997U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110127546A (en) * | 2018-12-07 | 2019-08-16 | 中国煤炭科工集团太原研究院有限公司 | A kind of self-supporting inverter-fed traction winch |
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