CN106585716B

CN106585716B - Variable speed electric control gear for hydraulic travel system

Info

Publication number: CN106585716B
Application number: CN201611224470.1A
Authority: CN
Inventors: 李基恒; 明传波; 张大伟; 赵峰; 李卫
Original assignee: Tai'an Dongyue Heavy Industry Co Ltd
Current assignee: Tai'an Dongyue Heavy Industry Co Ltd
Priority date: 2016-12-27
Filing date: 2016-12-27
Publication date: 2019-01-15
Anticipated expiration: 2036-12-27
Also published as: CN106585716A

Abstract

A kind of variable speed electric control gear for hydraulic travel system, it include controller circuitry (1), power circuit (2), electric pushrod driving circuit (3), accelerator input signal processing circuit (4), forward-reverse signal processing circuit (5), failure exports indicating circuit (6), cut off engine power supply circuit 7 and instrument communication interface circuit (8), power circuit (2), electric pushrod driving circuit (3), accelerator input signal processing circuit (4), forward-reverse signal processing circuit (5), failure exports indicating circuit (6), cutting engine power supply circuit 7 and instrument communication interface circuit (8) are respectively set to connect with the interface of controller circuitry (1), controller, absolute value encoder and electric pushrod are applied in closed type hydraulic system, controller passes through electric pushrod essence Really control variable pumpage no longer manually controls variable pumpage using mechanical pull rod, therefore improves walking straightness, and steering manipulation is more precisely and safer.

Description

Variable speed electric control gear for hydraulic travel system

One, technical field

The present invention relates to a kind of variable speed electric control gear, especially a kind of variable speed electricity for hydraulic travel system Control device.

Two, background technique

Hydraulic travel system is widely used in crawler tractor, agricultural harvesting mechanical and offroad vehicle, therefore hydraulic moving system System is a kind of important traffic component, and in existing hydraulic travel system, hydraulic travel system is largely using mechanical pull rod Variable pumpage is manually controlled, while variable pump and heavy gearbox cooperation are completed to turn to, other side driving is braked in side, therefore Turning radius is very big, and needs multiple movements collaborations that could complete when turning, handling very poor, a kind of currently not yet to be used for liquid The variable speed electric control gear of running gear is pressed, controller, absolute value encoder and electric pushrod are applied in closed type hydraulic system In, controller accurately controls variable pumpage by electric pushrod, and walking straightness is good, and steering manipulation is more precisely, more comfortably, more Safety.

Based on existing technical problem, technical characteristic and technical effect, application technical solution of the invention is made.

Three, summary of the invention

Object of the invention is a kind of variable speed electric control gear for hydraulic travel system.

In order to overcome the technical drawbacks described above, the object of the present invention is to provide a kind of variable speed for hydraulic travel system Electric control gear, therefore walking straightness is improved, steering manipulation is more precisely and safer.

In order to achieve the above objectives, the technical solution adopted by the present invention is that: include controller circuitry, power circuit, electronic Push rod driving circuit, forward-reverse signal processing circuit, failure output indicating circuit, is cut at accelerator input signal processing circuit Disconnected engine power supply circuit and instrument communication interface circuit,

Power circuit, electric pushrod driving circuit, accelerator input signal processing circuit, forward-reverse signal processing electricity Road, failure output indicating circuit, cutting engine power supply circuit and instrument communication interface circuit are respectively set to and controller electricity The interface on road connects.

Due to devising controller circuitry, power circuit, electric pushrod driving circuit, accelerator input signal processing electricity Road, forward-reverse signal processing circuit, failure output indicating circuit, cutting engine power supply circuit and instrument communication interface electricity Road applies controller, absolute value encoder and electric pushrod in closed type hydraulic system, and controller is accurate by electric pushrod Variable pumpage is controlled, variable pumpage is no longer manually controlled using mechanical pull rod, therefore improve walking straightness, turns to behaviour Control is more precisely and safer.

The present invention devises, according in such a way that controller circuitry output is basic signal electric pushrod driving circuit, Accelerator input signal processing circuit, forward-reverse signal processing circuit, failure output indicating circuit, cutting engine power supply electricity Road and instrument communication interface circuit and controller circuitry are connected with each other.

The present invention devises, and controller circuitry is set as including controller U5, resistance R2, resistance R3, resistance R4 and electricity Resistance R5,

Controller U5 be provided with interface 1, interface 2, interface 3, interface 4, interface 5, interface 6, interface 7, interface 8, interface 9, Interface 10, interface 11, interface 12, interface 13, interface 14, interface 15, interface 16, interface 17, interface 18, interface 19, interface 20, Interface 21, interface 22, interface 23, interface 24, interface 25, interface 26, interface 27, interface 28, interface 29, interface 30, interface 31, Interface 32, interface 33, interface 34, interface 35, interface 36, interface 37, interface 38, interface 39, interface 40, interface 41, interface 42, Interface 43, interface 44, interface 45, interface 46, interface 47, interface 48, interface 49, interface 50, interface 51, interface 52, interface 53, Interface 54, interface 55, interface 56, interface 57, interface 58, interface 59, interface 60, interface 61, interface 62, interface 63 and interface 64,

The interface 1 of controller U5 is set as pulling up the interface ENC2 of processing with code device signal_-09 connection and controller The interface 2 of U5 is set as pulling up the interface ENC1 of processing with code device signal_-09 connection, the interface 3 of controller U5 be set as with The interface ENC2 of code device signal pull-up processing_-The interface 4 of 010 connection and controller U5 are set as pulling up with code device signal The interface ENC1 of processing_-10 connections, the interface 5 of controller U5 are set as pulling up the interface ENC3 of processing with code device signal_-10 connect It connects and the interface 6 of controller U5 is set as pulling up the interface ENC3 of processing with code device signal_-09 connection, controller U5's connects Mouth 7 is set as pulling up the interface ENC3 of processing with code device signal_-The interface 8 of 08 connection and controller U5 are set as and encode The interface ENC3 of device signal pull-up processing_-07 connection, the interface 10 of controller U5 are set as pulling up processing with code device signal Interface ENC3_-The interface 11 of 06 connection and controller U5 are set as pulling up the interface ENC3 of processing with code device signal_-05 connects It connects, the interface 12 of controller U5 is set as pulling up the interface ENC3 of processing with code device signal_-04 connection and controller U5 Interface 12 is set as pulling up the interface ENC3 of processing with code device signal_-03 connection,

The interface 17 of controller U5 is set as connecting with the interface JIASUQI of accelerator input signal processing circuit,

The interface 18 of controller U5 is set as the interface START with cutting engine power supply circuit_-EN1 connection,

The interface 19 of controller U5 is set as interface VCC,

The interface 21 of controller U5 is set as connecting with the output port of power circuit,

The interface 27 of controller U5 is set as connecting with the interface RXD of instrument communication interface circuit and controller U5 connects Mouth 28 is set as connecting with the interface TXD of instrument communication interface circuit,

The interface 35 of controller U5 is set as connecting with the interface RUN of cutting engine power supply circuit,

The interface 36 of controller U5 is set as the interface M2- of the controller U2 by resistance R2 Yu electric pushrod driving circuit The interface 38 of 2PWM connection and controller U5 are set as connecting with the interface M2-INT of the controller U2 of electric pushrod driving circuit It connects,

The interface ERROR that the interface 39 of controller U5 is set as exporting indicating circuit with failure is connect,

The interface 40 of controller U5 is set as interface PWM_-The interface 40 of IN and controller U5 are set as interface PWM_-OUT,

The interface 42 of controller U5 is set as connecting with the interface FRONT of forward-reverse signal processing circuit,

The interface 44 of controller U5 is set as connecting with the interface BACK of forward-reverse signal processing circuit,

The interface 45 of controller U5 is set as connecting with the interface M1-INT of the controller U1 of electric pushrod driving circuit,

The interface 46 of controller U5 is set as the interface M2- of the controller U2 by resistance R5 Yu electric pushrod driving circuit 1PWM connection, the interface 47 of controller U5 are set as the interface of the controller U1 by resistance R4 Yu electric pushrod driving circuit The interface 48 of M1-2PWM connection and controller U5 are set as through the controller U1's of resistance R3 and electric pushrod driving circuit Interface M1-1PWM connection,

The interface 49 of controller U5 is set as pulling up the interface ENC2 of processing with code device signal_-01 connection and controller The interface 50 of U5 is set as pulling up the interface ENC1 of processing with code device signal_-01 connection, the interface 51 of controller U5 are set as With the interface ENC2 of code device signal pull-up processing_-02 connection and controller U5 interface 52 be set as on code device signal Draw the interface ENC1 of processing_-02 connection, the interface 53 of controller U5 are set as pulling up the interface ENC2 of processing with code device signal_- The interface 54 of 03 connection and controller U5 are set as pulling up the interface ENC1 of processing with code device signal_-03 connection, controller The interface 55 of U5 is set as pulling up the interface ENC2 of processing with code device signal_-The interface 56 of 04 connection and controller U5 are arranged For the interface ENC1 with code device signal pull-up processing_-04 connection, the interface 57 of controller U5 be set as on code device signal Draw the interface ENC2 of processing_-The interface 58 of 05 connection and controller U5 are set as pulling up the interface of processing with code device signal ENC1_-05 connection, the interface 59 of controller U5 are set as pulling up the interface ENC2 of processing with code device signal_-06 connects and controls The interface 60 of device U5 processed is set as pulling up the interface ENC1 of processing with code device signal_-06 connection, the interface 61 of controller U5 are set It is set to the interface ENC2 with code device signal pull-up processing_-The interface 62 of 07 connection and controller U5 are set as believing with encoder Number pull-up processing interface ENC1_-07 connection,

The interface 63 of controller U5 is set as pulling up the interface ENC2 of processing with code device signal_-08 connection and controller The interface 64 of U5 is set as pulling up the interface ENC1 of processing with code device signal_-08 connection.

The present invention devises, and power circuit is set as including power circuit I and power circuit II,

Power circuit I is set as including fuse F1, diode D1, diode TVS1, capacitor E1, arithmetic unit U3, two Pole pipe D2, inductance L1, capacitor E2, fuse F2 and capacitor C1, arithmetic unit U3 are provided with interface 1, interface 2, interface 3,4 and of interface Interface 5,

One end port of fuse F1 is set as connecting with external power supply and the other end port of fuse F1 is set as Connect with the anode of diode D1, the cathode of diode D1 is respectively set to the cathode of diode TVS1, capacitor E1 is positive and The interface 1 of arithmetic unit U3 connects and the anode of diode TVS1, capacitor E1 cathode, the interface 5 of arithmetic unit U3, arithmetic unit U3 Interface 3, the anode of diode D2, the cathode of capacitor E2 and capacitor C1 one end port be respectively set to be connected to ground, arithmetic unit The interface 2 of U3 is respectively set to connect with the cathode of one end port of inductance L1 and diode D2 and the interface 4 of arithmetic unit U3 It is respectively set to connect with the other end port of the other end port of inductance L1, the anode of capacitor E2 and capacitor C1, C1's is another End port is set as connecting with one end port of fuse F2 and the other end port of the other end port of fuse F2 and C1 It is arranged and is respectively set to connect with the input port of power circuit II,

Power circuit II is set as including arithmetic unit U4, capacitor E3, capacitor C2, diode TVS2, resistance R8, diode LED1 and fuse F4, arithmetic unit U4 are provided with interface 1, interface 2 and interface 3,

The interface 1 of arithmetic unit U4 is set as the interface 2 of input port and arithmetic unit U4, one end port of capacitor E3, electricity One end port and one end port of diode TVS2 for holding C2 are connected to ground respectively, the interface 3 of arithmetic unit U4, capacitor E3 it is another Hold port, the other end port of capacitor C2 and the other end port of diode TVS2, one end port of resistance R8, fuse F4 One end port and the interface 3 for being set as interconnection and arithmetic unit U4 are set as interface VCC, and the other end port of resistance R8 is set It is set to and is connect with the anode of diode (LED) 1 and 1 cathode of diode (LED) is set as being connected to ground, the other end port of fuse F4 It is set as connecting with the interface 21 of controller U5.

The present invention devises, and electric pushrod driving circuit is set as including electric pushrod driving circuit I and electric pushrod Driving circuit II,

Electric pushrod driving circuit I is set as including arithmetic unit U1 and capacitor C3, and arithmetic unit U1 is provided with interface 1, connects Mouth 2, interface 4, interface 5, interface 6, interface 7, interface 8, interface 9, interface 10, interface 11, interface 12, interface 13, connects interface 3 Mouthfuls 14, interface 15, interface 16, interface 17, interface 18, interface 19 and interface 20, the interface 1 of arithmetic unit U1, arithmetic unit U1 connect One end port difference of mouth 9, the interface 10 of arithmetic unit U1, the interface 11 of arithmetic unit U1, the interface 12 of arithmetic unit U1 and capacitor C3 It is connected to ground and the other end port of capacitor C3 is set as connecting with the interface 17 of arithmetic unit U1, the interface 2 of arithmetic unit U1 is set The interface 3 for being set to interface M1-INT and arithmetic unit U1 is set as interface M1-IPWM, the interface 6 and arithmetic unit U1 of arithmetic unit U1 Interface 7 be set as being connected with each other and the interface 7 of arithmetic unit U1 is set as interface M1-1, interface 4, the arithmetic unit of arithmetic unit U1 The interface 5 of U1 and the interface 16 of arithmetic unit U1 are set as connecting with 24V output port of power source and the interface 19 of arithmetic unit U1 is set It is set to interface M1-2PWM, the interface 18 of arithmetic unit U1 is set as interface D1 and the interface 13 of arithmetic unit U1 is set as interface D2, The interface 15 of arithmetic unit U1 and the interface 14 of arithmetic unit U1 are set as being connected with each other and the interface 14 of arithmetic unit U1 is set as connecing Mouth M1-2,

Electric pushrod driving circuit II is set as including arithmetic unit U2 and capacitor C4, and arithmetic unit U2 is provided with interface 1, connects Mouth 2, interface 4, interface 5, interface 6, interface 7, interface 8, interface 9, interface 10, interface 11, interface 12, interface 13, connects interface 3 Mouthfuls 14, interface 15, interface 16, interface 17, interface 18, interface 19 and interface 20, the interface 1 of arithmetic unit U2, arithmetic unit U2 connect One end port difference of mouth 9, the interface 10 of arithmetic unit U2, the interface 11 of arithmetic unit U2, the interface 12 of arithmetic unit U2 and capacitor C4 It is connected to ground and the other end port of capacitor C4 is set as connecting with the interface 17 of arithmetic unit U2, the interface 2 of arithmetic unit U2 is set The interface 3 for being set to interface M2-INT and arithmetic unit U2 is set as interface M2-IPWM, the interface 6 and arithmetic unit U2 of arithmetic unit U2 Interface 7 be set as being connected with each other and the interface 7 of arithmetic unit U2 is set as interface M2-1, interface 4, the arithmetic unit of arithmetic unit U2 The interface 5 of U2 and the interface 16 of arithmetic unit U2 are set as that 24V output port of power source connects and the interface 19 of arithmetic unit U2 is arranged For interface M2-2PWM, the interface 18 of arithmetic unit U2 is set as interface D1 and the interface 13 of arithmetic unit U2 is set as interface D2, fortune The interface 14 of the interface 15 and arithmetic unit U2 of calculating device U2 is set as being connected with each other and the interface 14 of arithmetic unit U2 is set as interface M2-2。

The present invention devises, and accelerator input signal processing circuit is set as including diode TVS3, resistance R15, electricity Hinder R16 and capacitor C5, the cathode of diode TVS3, one end port of resistance R15, one end port of resistance R16 and capacitor C5 One end port is set as being connected with each other and the anode of diode TVS3, the other end port of resistance R16 and capacitor C5 it is another End port is respectively set to be connected to ground,

One end port of resistance R15 is set as interface JIASUQI and one end port of resistance R15 is set as interface JISUQIZHI。

The present invention devises, and forward-reverse signal processing circuit is set as optocoupler control relay O3, optocoupler control relay An input port of device O4, diode D3, resistance R10 and resistance R11, optocoupler control relay O3 are set as interface FRONT simultaneously And an input port of optocoupler control relay O4 is set as interface BACK, optocoupler control relay O3 another input port and Another input port of optocoupler control relay O4 is set as being connected to ground and an output port of optocoupler control relay O3 It is respectively set to connect with the cathode of diode D3 with an output port of optocoupler control relay O4, optocoupler controls relay O3 Another output port be set as connecting with one end port of resistance R10 and the other end port of resistance R10 is set as interface FRONT_-Another output port of IN, optocoupler control relay O4 are set as connecting with one end port of resistance R11 and resistance The other end port of R11 is set as interface BACK_-IN, the anode of diode D3 are set as connecting with interface VCC.

The present invention devises, and failure output indicating circuit is set as including optocoupler control relay O2, resistance R12 and guarantor One end port of dangerous silk F3, resistance R12 are set as connecting with interface VCC and the other end port of resistance R12 is set as and light Coupling controls the input port connection of relay O2, and another input port of optocoupler control relay O2 is set as interface EEROR And an output port of optocoupler control relay O2 is set as connecting with 24V output port of power source, and optocoupler controls relay O2 Another output port be set as connecting with one end port of fuse F3 and the other end port of fuse F3 is set as connecing Mouth EEROR_-OUT。

The present invention devises, cutting engine power supply circuit be set as include optocoupler control relay O1, resistance R13, One end port of switch K1 and fuse F5, resistance R13 are set as connecting with interface VCC and the other end port of resistance R13 The input port for being set as controlling relay O1 with optocoupler is connect, and another input port of optocoupler control relay O1 is set as Interface START_-An output port of EN1 and optocoupler control relay O1 are set as being connected to ground, and optocoupler controls relay O1 Another output port be set as connecting with the input port of switch K1 and an output port of switch K1 is set as interface RUN_-Another output port of ON2, switch K1 be set as connecting with one end port of fuse F5 and fuse F5 it is another End port is set as interface RUN_-ON1。

The present invention devises, and instrument communication interface circuit is set as including arithmetic unit U6, capacitor C6, capacitor C7, capacitor C8, capacitor C9, capacitor C10, fuse F6 and fuse F7, arithmetic unit U6 are provided with interface 1, interface 2, interface 3, interface 4, connect Mouth 5, interface 6, interface 7, interface 8, interface 9, interface 10, interface 11, interface 12, interface 13, interface 14, interface 15 and interface The interface 1 of 16, arithmetic unit U6 are set as connecting with one end port of capacitor C6 and the other end port of capacitor C6 be set as with The interface 3 of arithmetic unit U6 connects, the interface 4 of arithmetic unit U6 be set as connecting with one end port of capacitor C7 and capacitor C7 it is another One end port is set as connecting with the interface 5 of arithmetic unit U6, and the interface 16 of arithmetic unit U6 is set as one end port with capacitor C8 It connects and the other end port of capacitor C8 is set as connecting with the interface 2 of arithmetic unit U6, the interface 15 of arithmetic unit U6 is set as It is connect with one end port of capacitor C9 and the other end port of capacitor C9 is set as connecting with the interface 6 of arithmetic unit U6, operation The interface 16 of device U6 is set as connecting with one end port of capacitor C10 and the other end port of capacitor C10 and arithmetic unit U6 Interface 15 is respectively set to be connected to ground, and the interface 10 of arithmetic unit U6 is set as interface TXD and the interface 9 of arithmetic unit U6 is arranged For interface RXD, the interface 16 of arithmetic unit U6 is set as connecting with interface VCC and the interface 7 of arithmetic unit U6 is set as and insures One end port connection of silk F6, the interface 8 of arithmetic unit U6 is set as connecting with one end port of fuse F7 and fuse F7 Other end port be set as interface RXDDUT, the other end port of fuse F6 is set as interface TXDDUT.

In the technical scheme, with controller circuitry that controller circuitry output is basic signal, power circuit, electronic push away Bar driving circuit, accelerator input signal processing circuit, forward-reverse signal processing circuit, failure output indicating circuit, cutting Engine power supply circuit and instrument communication interface circuit are important technical characteristic, in the variable speed electricity for hydraulic travel system In the technical field for controlling device, there is novelty, creativeness and practicability, term in the technical scheme is all that can use this Patent document in technical field explains and understands.

Four, Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is schematic diagram of the invention:

Fig. 2 is the circuit diagram of controller circuitry of the invention:

Fig. 3 is the circuit diagram of power circuit of the invention:

Fig. 4 is the circuit diagram of electric pushrod driving circuit of the invention:

Fig. 5 is the circuit diagram of accelerator input signal processing circuit of the invention:

Fig. 6 is the circuit diagram of forward-reverse signal processing circuit of the invention:

Fig. 7 is the circuit diagram that failure of the invention exports indicating circuit:

Fig. 8 is the circuit diagram of cutting engine power supply circuit of the invention:

Fig. 9 is the circuit diagram of instrument communication interface circuit of the invention.

Five, specific embodiment

According to guidelines for examination, such as " having ", "comprising" and " comprising " term used in the present invention should understand that For the presence or addition for not allotting one or more of the other element or combinations thereof.

In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is the orientation or positional relationship of general expression, is merely for convenience of The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy Fixed orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " third " It is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in invention.

As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments It can be combined with each other at conflict.

Below in conjunction in the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched It states, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, It shall fall within the protection scope of the present invention.

Attached drawing is one embodiment of the present of invention, illustrates the present embodiment in conjunction with attached drawing, include controller circuitry 1, Power circuit 2, electric pushrod driving circuit 3, accelerator input signal processing circuit 4, forward-reverse signal processing circuit 5, event Barrier output indicating circuit 6, cutting engine power supply circuit 7 and instrument communication interface circuit 8,

Power circuit 2, electric pushrod driving circuit 3, accelerator input signal processing circuit 4, forward-reverse signal processing Circuit 5, failure output indicating circuit 6, cutting engine power supply circuit 7 and instrument communication interface circuit 8 are respectively set to and control The interface of device circuit 1 processed connects.

In the present embodiment, controller circuitry 1 is set as including controller U5, resistance R2, resistance R3, resistance R4 and electricity Resistance R5,

The interface 17 of controller U5 is set as connecting with the interface JIASUQI of accelerator input signal processing circuit 4,

The interface 18 of controller U5 is set as the interface START with cutting engine power supply circuit 7_-EN1 connection,

The interface 19 of controller U5 is set as interface VCC,

The interface 21 of controller U5 is set as connecting with the output port of power circuit 2,

The interface 27 of controller U5 is set as connecting with the interface RXD of instrument communication interface circuit 8 and controller U5 Interface 28 is set as connecting with the interface TXD of instrument communication interface circuit 8,

The interface 35 of controller U5 is set as connecting with the interface RUN of cutting engine power supply circuit 7,

The interface 36 of controller U5 is set as the interface of the controller U2 by resistance R2 Yu electric pushrod driving circuit 3 The interface 38 of M2-2PWM connection and controller U5 are set as the interface M2- with the controller U2 of electric pushrod driving circuit 3 INT connection,

The interface ERROR that the interface 39 of controller U5 is set as exporting indicating circuit 6 with failure is connect,

The interface 42 of controller U5 is set as connecting with the interface FRONT of forward-reverse signal processing circuit 5,

The interface 44 of controller U5 is set as connecting with the interface BACK of forward-reverse signal processing circuit 5,

The interface 45 of controller U5 is set as connecting with the interface M1-INT of the controller U1 of electric pushrod driving circuit 3,

The interface 46 of controller U5 is set as the interface of the controller U2 by resistance R5 Yu electric pushrod driving circuit 3 M2-1PWM connection, the interface 47 of controller U5 are set as connecing by the resistance R4 and controller U1 of electric pushrod driving circuit 3 The interface 48 of mouth M1-2PWM connection and controller U5 are set as the controller by resistance R3 and electric pushrod driving circuit 3 The interface M1-1PWM connection of U1,

In the present embodiment, power circuit 2 is set as including power circuit I and power circuit II,

In the present embodiment, electric pushrod driving circuit 3 is set as including electric pushrod driving circuit I and electric pushrod Driving circuit II,

In the present embodiment, accelerator input signal processing circuit 4 is set as including diode TVS3, resistance R15, electricity Hinder R16 and capacitor C5, the cathode of diode TVS3, one end port of resistance R15, one end port of resistance R16 and capacitor C5 One end port is set as being connected with each other and the anode of diode TVS3, the other end port of resistance R16 and capacitor C5 it is another End port is respectively set to be connected to ground,

In the present embodiment, forward-reverse signal processing circuit 5 is set as optocoupler control relay O3, optocoupler control relay An input port of device O4, diode D3, resistance R10 and resistance R11, optocoupler control relay O3 are set as interface FRONT simultaneously And an input port of optocoupler control relay O4 is set as interface BACK, optocoupler control relay O3 another input port and Another input port of optocoupler control relay O4 is set as being connected to ground and an output port of optocoupler control relay O3 It is respectively set to connect with the cathode of diode D3 with an output port of optocoupler control relay O4, optocoupler controls relay O3 Another output port be set as connecting with one end port of resistance R10 and the other end port of resistance R10 is set as interface FRONT_-Another output port of IN, optocoupler control relay O4 are set as connecting with one end port of resistance R11 and resistance The other end port of R11 is set as interface BACK_-IN, the anode of diode D3 are set as connecting with interface VCC.

In the present embodiment, failure output indicating circuit 6 be set as include optocoupler control relay O2, resistance R12 and One end port of fuse F3, resistance R12 are set as connecting with interface VCC and the other end port of resistance R12 be set as with Optocoupler controls the input port connection of relay O2, and another input port of optocoupler control relay O2 is set as interface An output port of EEROR and optocoupler control relay O2 are set as connecting with 24V output port of power source, and optocoupler controls relay Another output port of device O2 is set as connecting with one end port of fuse F3 and the other end port of fuse F3 is arranged For interface EEROR_-OUT。

In the present embodiment, cutting engine power supply circuit 7 be set as include optocoupler control relay O1, resistance R13, One end port of switch K1 and fuse F5, resistance R13 are set as connecting with interface VCC and the other end port of resistance R13 The input port for being set as controlling relay O1 with optocoupler is connect, and another input port of optocoupler control relay O1 is set as Interface START_-An output port of EN1 and optocoupler control relay O1 are set as being connected to ground, and optocoupler controls relay O1 Another output port be set as connecting with the input port of switch K1 and an output port of switch K1 is set as interface RUN_-Another output port of ON2, switch K1 be set as connecting with one end port of fuse F5 and fuse F5 it is another End port is set as interface RUN_-ON1。

In the present embodiment, instrument communication interface circuit 8 is set as including arithmetic unit U6, capacitor C6, capacitor C7, capacitor C8, capacitor C9, capacitor C10, fuse F6 and fuse F7, arithmetic unit U6 are provided with interface 1, interface 2, interface 3, interface 4, connect Mouth 5, interface 6, interface 7, interface 8, interface 9, interface 10, interface 11, interface 12, interface 13, interface 14, interface 15 and interface The interface 1 of 16, arithmetic unit U6 are set as connecting with one end port of capacitor C6 and the other end port of capacitor C6 be set as with The interface 3 of arithmetic unit U6 connects, the interface 4 of arithmetic unit U6 be set as connecting with one end port of capacitor C7 and capacitor C7 it is another One end port is set as connecting with the interface 5 of arithmetic unit U6, and the interface 16 of arithmetic unit U6 is set as one end port with capacitor C8 It connects and the other end port of capacitor C8 is set as connecting with the interface 2 of arithmetic unit U6, the interface 15 of arithmetic unit U6 is set as It is connect with one end port of capacitor C9 and the other end port of capacitor C9 is set as connecting with the interface 6 of arithmetic unit U6, operation The interface 16 of device U6 is set as connecting with one end port of capacitor C10 and the other end port of capacitor C10 and arithmetic unit U6 Interface 15 is respectively set to be connected to ground, and the interface 10 of arithmetic unit U6 is set as interface TXD and the interface 9 of arithmetic unit U6 is arranged For interface RXD, the interface 16 of arithmetic unit U6 is set as connecting with interface VCC and the interface 7 of arithmetic unit U6 is set as and insures One end port connection of silk F6, the interface 8 of arithmetic unit U6 is set as connecting with one end port of fuse F7 and fuse F7 Other end port be set as interface RXDDUT, the other end port of fuse F6 is set as interface TXDDUT.

In the present embodiment, the model of controller U5 is set as STC15W4K60S4_-The model of LQFP64, arithmetic unit U5 are set It is set to MAX232, the model of arithmetic unit U3 is set as LM2576HV-12, and the model of arithmetic unit U4 is set as 78M05, arithmetic unit U1 It is respectively set to MC33886 with the model of arithmetic unit U2, optocoupler controls the model point of relay O3 and optocoupler control relay O4 The model for not being set as TLP185, optocoupler control relay O2 and optocoupler control relay O1 is respectively set to TLP127, switchs The model of K1 is set as G2R-1A-E.

24V voltage is converted into 12V voltage by LM2576HV-12 first by power circuit 2, then again will by 78M05 12V is converted into 5V voltage, and the digital signal of forward-reverse signal processing circuit 5 is isolated by optocoupler, to realize circuit The electrical isolation of plate and external system, improves the anti-interference ability of circuit board, and cutting engine power supply circuit 7 is controlled by optocoupler Whether relay coil is powered, to realize the on-off of control relay contact, finally realizes the on-off of generator, accelerator is defeated Enter the filtering processing that signal processing circuit 4 completes external analog signal by RC low-pass filter, and signal passes by treated MCU analog quantity input is passed, instrument communication interface circuit 8 realizes the letter of RS232 level and Transistor-Transistor Logic level by chip MAX232 Number conversion, so that it is guaranteed that electrical characteristic when circuit system is communicated with external meters matches, electric pushrod driving circuit 3 passes through core Piece MC33886 controls motor operation, which receives the pwm signal from MCU, and adjustable straight according to PWM duty cycle output Galvanic electricity pressure, to realize electric machine speed regulation, external input signal is acquired to MCU, MCU and carries out calculation process by controller circuitry 1 Export corresponding control signal, such as pwm signal, fault-signal again afterwards.

In the present embodiment, the interface 1 of controller U5 be set as foot F5.3 T_×D4_-2, the interface 2 of controller U5 is set as Foot PQ5 AI6/T3 PWMFL_-2, the interface 3 of controller U5 be set as foot PQ6 AI6/T4CLKD PWM7_-2, controller U5 connects Mouthfuls 4 be set as foot PQ7 AAD7/T4 PWM6_-2, the interface 5 of controller U5 is set as foot P6.0, the interface 6 of controller U5 is arranged For foot P6.1, controller U5 interface 7 be set as foot P6.2, the interface 8 of controller U5 is set as foot P6.3, controller U5 connects Mouth 9 is set as foot P1.0/ADC0/CCP1/R_×D4_-2, the interface 10 of controller U5 is set as foot P1.1/ADC1/CCP0/T_×D4_- 2, the interface 11 of controller U5 is set as foot P4.7/ T_×D2_-2, the interface 12 of controller U5 is set as foot P1.2/ADC2/SS/ ECI/CMPO, controller U5 interface 13 be set as foot P1.3/ADC3/MOSI, the interface 14 of controller U5 is set as foot P1.4/ ADC4MISO, controller U5 interface 15 be set as foot P1.5/ADC5/SCLH, the interface 16 of controller U5 is set as foot P1.6/ ADC6/R_×D_-3/PWM6, controller U5 interface 17 be set as foot P1.7/ADC7/ T_×D4_-The interface of 3/PWMP7, controller U5 18 are set as foot P5.4/RST/MCLKO/SS_-3/CMP-, controller U5 interface 19 be set as the interface of foot VCC, controller U5 20 are set as foot P5.5/CMP+, the interface 21 of controller U5 is set as foot GND, the interface 22 of controller U5 is set as foot P4.0/ M0SI_-3, the interface 23 of controller U5 is set as foot P6.4, the interface 24 of controller U5 is set as foot P6.5, controller U5 connects Mouth 25 is set as foot P6.6, the interface 26 of controller U5 is set as foot P6.7, the interface 27 of controller U5 is set as foot P3.0/R_× D/INT4/T2CLKO, controller U5 interface 28 be set as foot P3.1/ T_×D/T2, controller U5 interface 29 be set as foot P3.2/INT0, controller U5 interface 30 be set as foot P3.3INT1, the interface 31 of controller U5 is set as foot P3.4/T0/ T1CLKO/ECI_-2, the interface 32 of controller U5 is set as foot P5.0R_×D3_-2, the interface 33 of controller U5 is set as foot P5.1/ T_×D3_-2, the interface 34 of controller U5 is set as foot P3.5/T1/TDCLKO/CCP0_-2, the interface 35 of controller U5 is set as foot P3.6/INT/ R_×D_-2/CCP1_-2, the interface 36 of controller U5 is set as foot P3.7/INT3/ T_×D_-2/PWM2, controller U5 Interface 37 be set as foot P7.0, the interface 38 of controller U5 is set as foot P7.1, the interface 39 of controller U5 is set as foot P7.2, controller U5 interface 40 be set as foot P7.3, the interface 41 of controller U5 is set as foot P4.1/MISO_-3, controller The interface 42 of U5 is set as foot P4.2/VR/PWM5_-2, the interface 43 of controller U5 is set as foot P4.3/SCLK_-3, controller U5 Interface 44 be set as foot P4.4/RD/PVM4_-2, the interface 45 of controller U5 is set as foot P20/A8/RSTDUT_-LDW, control The interface 46 of device U5 is set as foot P21/A9/SCLK_-2/PWM3, controller U5 interface 47 be set as foot P2.2/A10/MISO_- 2PWM4, controller U5 interface 48 be set as foot P2.3/A10/MOSI_-2PWM5, controller U5 interface 49 be set as foot P2.4/SS_-2/PWMFLT, controller U5 interface 50 be set as foot P2.5/A13/CCP0_-3, the interface 51 of controller U5 is arranged For foot P2.6/A14/CCP1_-3, the interface 52 of controller U5 is set as foot P2.7/A15/PWM2_-2, the interface 53 of controller U5 is set It is set to foot P7.4, the interface 54 of controller U5 is set as foot P7.5, the interface 55 of controller U5 is set as foot P7.6, controller U5 Interface 56 be set as foot P7.7, the interface 57 of controller U5 is set as foot P4.5/ALE/PWM3_-2, the interface 58 of controller U5 It is set as foot P4.6/ R_×D2_-2, the interface 59 of controller U5 is set as foot P0.0/AD0 R_×D3, controller U5 interface 60 set It is set to foot P0.1/AD1 T_×D3, controller U5 interface 61 be set as foot P0.2/AD2 R_×D4, controller U5 interface 62 set It is set to foot P0.3/AD3T_×D4, controller U5 interface 63 be set as the interface 64 of foot P0.4/AD4/T3CLKO and controller U5 It is set as foot P5.2/ R_×D4_-2。

The interface 1 of arithmetic unit U3 is set as foot VIN, the interface 2 of arithmetic unit U3 is set as foot DUT, the interface 3 of arithmetic unit U3 Be set as foot GND, the interface 4 of arithmetic unit U3 is set as foot FB and the interface 5 of arithmetic unit U3 is set as foot ON,

The interface 1 of arithmetic unit U4 is set as foot VIN, the interface 2 of arithmetic unit U4 is set as the interface of foot GND and arithmetic unit U4 3 are set as foot VDUT,

The interface 1 of arithmetic unit U1 is set as foot AGND, the interface 2 of arithmetic unit U1 is set as foot FS, the interface 3 of arithmetic unit U1 It is set as foot IN1, the interface 4 of arithmetic unit U1 is set as foot V+, the interface 5 of arithmetic unit U1 is set as foot V-, arithmetic unit U1 connects Mouth 6 is set as foot OUT1, the interface 7 of arithmetic unit U1 is set as foot OUT1, the interface 8 of arithmetic unit U1 is set as foot DNC, arithmetic unit The interface 9 of U1 is set as foot PGND, the interface 10 of arithmetic unit U1 is set as foot PGND, the interface 11 of arithmetic unit U1 is set as foot PGND, arithmetic unit U1 interface 12 be set as foot PGND, the interface 13 of arithmetic unit U1 is set as the interface 14 of foot D2, arithmetic unit U1 It is set as foot OUT2, the interface 15 of arithmetic unit U1 is set as foot OUT2, the interface 16 of arithmetic unit U1 is set as foot V+, arithmetic unit U1 Interface 17 be set as foot Ccp, the interface 18 of arithmetic unit U1 is set as foot D1, the interface 19 of arithmetic unit U1 is set as foot IN2 and The interface 20 of arithmetic unit U1 is set as foot DNC,

The interface 1 of arithmetic unit U2 is set as foot AGND, the interface 2 of arithmetic unit U2 is set as foot FS, the interface 3 of arithmetic unit U2 It is set as foot IN1, the interface 4 of arithmetic unit U2 is set as foot V+, the interface 5 of arithmetic unit U2 is set as foot V-, arithmetic unit U2 connects Mouth 6 is set as foot OUT1, the interface 7 of arithmetic unit U2 is set as foot OUT1, the interface 8 of arithmetic unit U2 is set as foot DNC, arithmetic unit The interface 9 of U2 is set as foot PGND, the interface 10 of arithmetic unit U2 is set as foot PGND, the interface 11 of arithmetic unit U2 is set as foot PGND, arithmetic unit U2 interface 12 be set as foot PGND, the interface 13 of arithmetic unit U2 is set as the interface 14 of foot D2, arithmetic unit U2 It is set as foot OUT2, the interface 15 of arithmetic unit U2 is set as foot OUT2, the interface 16 of arithmetic unit U2 is set as foot V+, arithmetic unit U2 Interface 17 be set as foot Ccp, the interface 18 of arithmetic unit U2 is set as foot D1, the interface 19 of arithmetic unit U2 is set as foot IN2 and The interface 20 of arithmetic unit U2 is set as foot DNC,

The interface 1 of arithmetic unit U6 is set as foot C1+, the interface 2 of arithmetic unit U6 is set as foot VS+, the interface 3 of arithmetic unit U6 It is set as foot C2-, the interface 4 of arithmetic unit U6 is set as foot C2+, the interface 5 of arithmetic unit U6 is set as foot C2-, arithmetic unit U6 Interface 6 is set as foot VS-, the interface 7 of arithmetic unit U6 is set as foot T2OUT, the interface 8 of arithmetic unit U6 is set as foot R2IN, fortune The interface 9 for calculating device U6 is set as foot R2OUT, the interface 10 of arithmetic unit U6 is set as foot T2IN, the setting of the interface 11 of arithmetic unit U6 For foot T1IN, arithmetic unit U6 interface 12 be set as foot R1OUT, the interface 13 of arithmetic unit U6 is set as foot R1IN, arithmetic unit U6 Interface 14 be set as foot T1OUT, the interface 15 of arithmetic unit U6 is set as foot GND and the interface 16 of arithmetic unit U6 is set as foot VCC.

The present invention has the following characteristics:

1, due to devise controller circuitry 1, power circuit 2, electric pushrod driving circuit 3, at accelerator input signal Manage circuit 4, forward-reverse signal processing circuit 5, failure output indicating circuit 6, cutting engine power supply circuit 7 and instrument communication Interface circuit 8 is applied controller, absolute value encoder and electric pushrod in closed type hydraulic system, and controller passes through electronic Push rod accurately controls variable pumpage, no longer manually controls variable pumpage using mechanical pull rod, therefore improve walking straight line Degree, steering manipulation are more precisely and safer.

2, due to devising power circuit 2, by power circuit 2, stable voltage is provided.

3, due to devising electric pushrod driving circuit 3, accelerator input signal processing circuit 4, at forward-reverse signal Circuit 5, failure output indicating circuit 6, cutting engine power supply circuit 7 and instrument communication interface circuit 8 are managed, electric pushrod is passed through Driving circuit 3, forward-reverse signal processing circuit 5, failure output indicating circuit 6, is cut at accelerator input signal processing circuit 4 Disconnected engine power supply circuit 7 and instrument communication interface circuit 8, meet the performance needs for chatting the walking chassis of hydraulic control.

4, due to devising controller circuitry 1, by the controller U5 in controller circuitry 1, the stabilization of performance is improved Performance and precision performance.

5, due to devising technical characteristic of the invention, in the effect of the independent and mutual set of technical characteristic, By experiments have shown that, performance indexes of the invention be existing performance indexes be at least 1.7 times, pass through assessment tool There is good market value.

There are also others be the controller circuitry 1 of basic signal with the output of controller circuitry 1, power circuit 2, electronic push away Bar driving circuit 3, accelerator input signal processing circuit 4, forward-reverse signal processing circuit 5, failure output indicating circuit 6, Cutting off the technical characteristic that engine power supply circuit 7 and instrument communication interface circuit 8 connect all is one of the embodiment of the present invention, and And each technical characteristic of embodiment described above can be combined arbitrarily, to meet Patent Law, patent regulation and examining The requirement of guide is looked into, no longer all possible combined embodiment of each technical characteristic in above-described embodiment is all retouched It states.

Therefore in the variable speed electric control gear technical field for hydraulic travel system, all includes controller electricity Road 1, power circuit 2, electric pushrod driving circuit 3, accelerator input signal processing circuit 4, forward-reverse signal processing circuit 5, failure output indicating circuit 6, cutting engine power supply circuit 7 and instrument communication interface circuit 8, power circuit 2, electric pushrod Driving circuit 3, forward-reverse signal processing circuit 5, failure output indicating circuit 6, is cut at accelerator input signal processing circuit 4 Disconnected engine power supply circuit 7 and instrument communication interface circuit 8 are respectively set in the technology connecting with the interface of controller circuitry 1 Hold all within the scope of the present invention.

Claims

1. a kind of variable speed electric control gear for hydraulic travel system, it is characterized in that: including controller circuitry (1), electricity Source circuit (2), electric pushrod driving circuit (3), accelerator input signal processing circuit (4), forward-reverse signal processing circuit (5), failure output indicating circuit (6), cutting engine power supply circuit (7) and instrument communication interface circuit (8),

Power circuit (2), electric pushrod driving circuit (3), accelerator input signal processing circuit (4), at forward-reverse signal Manage circuit (5), failure output indicating circuit (6), cutting engine power supply circuit (7) and instrument communication interface circuit (8) difference It is set as connecting with the interface of controller circuitry (1),

Controller circuitry (1) be set as include controller U5, resistance R2, resistance R3, resistance R4 and resistance R5,

Controller U5 is provided with interface 1, interface 2, interface 3, interface 4, interface 5, interface 6, interface 7, interface 8, interface 9, interface 10, interface 11, interface 12, interface 13, interface 14, interface 15, interface 16, interface 17, interface 18, interface 19, interface 20, interface 21, interface 22, interface 23, interface 24, interface 25, interface 26, interface 27, interface 28, interface 29, interface 30, interface 31, interface 32, interface 33, interface 34, interface 35, interface 36, interface 37, interface 38, interface 39, interface 40, interface 41, interface 42, interface 43, interface 44, interface 45, interface 46, interface 47, interface 48, interface 49, interface 50, interface 51, interface 52, interface 53, interface 54, interface 55, interface 56, interface 57, interface 58, interface 59, interface 60, interface 61, interface 62, interface 63 and interface 64,

The interface 1 of controller U5 is set as pulling up the interface ENC2 of processing with code device signal_-09 connection and controller U5 connects Mouth 2 is set as pulling up the interface ENC1 of processing with code device signal_-09 connection, the interface 3 of controller U5 is set as and encoder The interface ENC2 of signal pull-up processing_-The interface 4 of 010 connection and controller U5 are set as pulling up processing with code device signal Interface ENC1_-10 connections, the interface 5 of controller U5 are set as pulling up the interface ENC3 of processing with code device signal_-10 connection and The interface 6 of controller U5 is set as pulling up the interface ENC3 of processing with code device signal_-09 connection, the interface 7 of controller U5 are set It is set to the interface ENC3 with code device signal pull-up processing_-The interface 8 of 08 connection and controller U5 are set as believing with encoder Number pull-up processing interface ENC3_-07 connection, the interface 10 of controller U5 are set as pulling up the interface of processing with code device signal ENC3_-The interface 11 of 06 connection and controller U5 are set as pulling up the interface ENC3 of processing with code device signal_-05 connection, control The interface 12 of device U5 processed is set as pulling up the interface ENC3 of processing with code device signal_-The interface 12 of 04 connection and controller U5 It is set as pulling up the interface ENC3 of processing with code device signal_-03 connection, the interface 17 of controller U5 are set as defeated with accelerator Enter the interface JIASUQI connection of signal processing circuit (4), the interface 18 of controller U5 is set as and cutting engine power supply circuit (7) interface START_-EN1 connection, the interface 19 of controller U5 are set as interface VCC, the interface 21 of controller U5 be set as with The output port of power circuit (2) connects, and the interface 27 of controller U5 is set as the interface with instrument communication interface circuit (8) The interface 28 of RXD connection and controller U5 are set as connecting with the interface TXD of instrument communication interface circuit (8), controller U5 Interface 35 be set as with cutting engine power supply circuit (7) interface RUN connect, the interface 36 of controller U5 is set as passing through Resistance R2 is connect with the interface M2-2PWM of the controller U2 of electric pushrod driving circuit (3) and the interface 38 of controller U5 is set Be set to and connect with the interface M2-INT of the controller U2 of electric pushrod driving circuit (3), the interface 39 of controller U5 be set as with Failure exports the interface ERROR connection of indicating circuit (6), and the interface 40 of controller U5 is set as interface PWM_-IN and controller The interface 40 of U5 is set as interface PWM_-The interface 42 of OUT, controller U5 are set as and forward-reverse signal processing circuit (5) Interface FRONT connection, the interface 44 of controller U5 are set as connecting with the interface BACK of forward-reverse signal processing circuit (5), The interface 45 of controller U5 is set as connecting with the interface M1-INT of the controller U1 of electric pushrod driving circuit (3), controller The interface 46 of U5 is set as connecting by resistance R5 with the interface M2-1PWM of the controller U2 of electric pushrod driving circuit (3), control The interface M1-2PWM that the interface 47 of device U5 processed is set as the controller U1 by resistance R4 Yu electric pushrod driving circuit (3) connects It connects and the interface 48 of controller U5 is set as the interface of the controller U1 by resistance R3 Yu electric pushrod driving circuit (3) M1-1PWM connection, the interface 49 of controller U5 are set as pulling up the interface ENC2 of processing with code device signal_-01 connects and controls The interface 50 of device U5 processed is set as pulling up the interface ENC1 of processing with code device signal_-01 connection, the interface 51 of controller U5 are set It is set to the interface ENC2 with code device signal pull-up processing_-The interface 52 of 02 connection and controller U5 are set as believing with encoder Number pull-up processing interface ENC1_-02 connection, the interface 53 of controller U5 are set as pulling up the interface of processing with code device signal ENC2_-The interface 54 of 03 connection and controller U5 are set as pulling up the interface ENC1 of processing with code device signal_-03 connection, control The interface 55 of device U5 processed is set as pulling up the interface ENC2 of processing with code device signal_-The interface 56 of 04 connection and controller U5 It is set as pulling up the interface ENC1 of processing with code device signal_-04 connection, the interface 57 of controller U5 are set as believing with encoder Number pull-up processing interface ENC2_-The interface 58 of 05 connection and controller U5 are set as pulling up connecing for processing with code device signal Mouth ENC1_-05 connection, the interface 59 of controller U5 are set as pulling up the interface ENC2 of processing with code device signal_-06 connection and The interface 60 of controller U5 is set as pulling up the interface ENC1 of processing with code device signal_-06 connection, the interface 61 of controller U5 It is set as pulling up the interface ENC2 of processing with code device signal_-The interface 62 of 07 connection and controller U5 are set as and encoder The interface ENC1 of signal pull-up processing_-07 connection, the interface 63 of controller U5 are set as pulling up connecing for processing with code device signal Mouth ENC2_-The interface 64 of 08 connection and controller U5 are set as pulling up the interface ENC1 of processing with code device signal_-08 connection.

2. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that: according to control Device circuit (1) output processed is the mode of basic signal electric pushrod driving circuit (3), accelerator input signal processing circuit (4), forward-reverse signal processing circuit (5), failure output indicating circuit (6), cutting engine power supply circuit (7) and instrument are logical Communication interface circuit (8) and controller circuitry (1) are connected with each other.

3. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that: power circuit (2) it is set as including power circuit I and power circuit II,

Power circuit I is set as including fuse F1, diode D1, diode TVS1, capacitor E1, arithmetic unit U3, diode D2, inductance L1, capacitor E2, fuse F2 and capacitor C1, arithmetic unit U3 are provided with interface 1, interface 2, interface 3, interface 4 and interface One end port of 5, fuse F1 are set as connecting with external power supply and the other end port of fuse F1 is set as and two poles The anode connection of pipe D1, the cathode of diode D1 are respectively set to and the cathode of diode TVS1, capacitor E1 anode and arithmetic unit The interface 1 of U3 connects and the anode of diode TVS1, capacitor E1 cathode, the interface 5 of arithmetic unit U3, arithmetic unit U3 interface 3, One end port of the anode of diode D2, the cathode of capacitor E2 and capacitor C1 is respectively set to be connected to ground, and arithmetic unit U3's connects Mouth 2 is respectively set to connect with the cathode of one end port of inductance L1 and diode D2 and the interface 4 of arithmetic unit U3 is set respectively It is set to and is connect with the other end port of the other end port of inductance L1, the anode of capacitor E2 and capacitor C1, the other end port of C1 It is set as connecting with one end port of fuse F2 and the other end port of fuse F2 and the setting of the other end port of C1 divides It is not set as connecting with the input port of power circuit II,

Power circuit II is set as including arithmetic unit U4, capacitor E3, capacitor C2, diode TVS2, resistance R8, diode (LED) 1 Fuse F4, arithmetic unit U4 are provided with interface 1, interface 2 and interface 3, the interface 1 of arithmetic unit U4 be set as input port and The interface 2 of arithmetic unit U4, one end port of capacitor E3, one end port of capacitor C2 and diode TVS2 one end port respectively with Ground connection, the interface 3 of arithmetic unit U4, the other end port of capacitor E3, the other end port of capacitor C2 and diode TVS2 it is another One end port, one end port of resistance R8, fuse F4 one end port and be set as being connected with each other and arithmetic unit U4 connects Mouth 3 is set as interface VCC, and the other end port of resistance R8 is set as connecting with 1 anode of diode (LED) and diode (LED) 1 is negative Pole is set as being connected to ground, and the other end port of fuse F4 is set as connecting with the interface 21 of controller U5.

4. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that: electric pushrod Driving circuit (3) is set as including electric pushrod driving circuit I and electric pushrod driving circuit II,

Electric pushrod driving circuit I is set as including arithmetic unit U1 and capacitor C3, arithmetic unit U1 be provided with interface 1, interface 2, Interface 3, interface 4, interface 5, interface 6, interface 7, interface 8, interface 9, interface 10, interface 11, interface 12, interface 13, interface 14, Interface 15, interface 16, interface 17, interface 18, interface 19 and interface 20, the interface 1 of arithmetic unit U1, the interface 9 of arithmetic unit U1, fortune One end port for calculating the interface 10 of device U1, the interface 11 of arithmetic unit U1, the interface 12 of arithmetic unit U1 and capacitor C3 connects with ground respectively It connects and the other end port of capacitor C3 is set as connecting with the interface 17 of arithmetic unit U1, the interface 2 of arithmetic unit U1 is set as connecing The interface 3 of mouth M1-INT and arithmetic unit U1 are set as interface M1-IPWM, the interface 6 of arithmetic unit U1 and the interface 7 of arithmetic unit U1 It is set as being connected with each other and the interface 7 of arithmetic unit U1 is set as interface M1-1, the interface 4 of arithmetic unit U1, arithmetic unit U1 connect The interface 16 of 5 and arithmetic unit U1 of mouth is set as connecting with 24V output port of power source and the interface 19 of arithmetic unit U1 is set as connecing Mouth M1-2PWM, the interface 18 of arithmetic unit U1 is set as interface D1 and the interface 13 of arithmetic unit U1 is set as interface D2, arithmetic unit The interface 15 of U1 and the interface 14 of arithmetic unit U1 are set as being connected with each other and the interface 14 of arithmetic unit U1 is set as interface M1-2,

Electric pushrod driving circuit II is set as including arithmetic unit U2 and capacitor C4, arithmetic unit U2 be provided with interface 1, interface 2, Interface 3, interface 4, interface 5, interface 6, interface 7, interface 8, interface 9, interface 10, interface 11, interface 12, interface 13, interface 14, Interface 15, interface 16, interface 17, interface 18, interface 19 and interface 20, the interface 1 of arithmetic unit U2, the interface 9 of arithmetic unit U2, fortune One end port for calculating the interface 10 of device U2, the interface 11 of arithmetic unit U2, the interface 12 of arithmetic unit U2 and capacitor C4 connects with ground respectively It connects and the other end port of capacitor C4 is set as connecting with the interface 17 of arithmetic unit U2, the interface 2 of arithmetic unit U2 is set as connecing The interface 3 of mouth M2-INT and arithmetic unit U2 are set as interface M2-IPWM, the interface 6 of arithmetic unit U2 and the interface 7 of arithmetic unit U2 It is set as being connected with each other and the interface 7 of arithmetic unit U2 is set as interface M2-1, the interface 4 of arithmetic unit U2, arithmetic unit U2 connect Mouthfuls 5 are set as that 24V output port of power source connects and the interface 19 of arithmetic unit U2 is set as interface with the interface 16 of arithmetic unit U2 The interface 18 of M2-2PWM, arithmetic unit U2 are set as interface D1 and the interface 13 of arithmetic unit U2 is set as interface D2, arithmetic unit U2 Interface 15 and the interface 14 of arithmetic unit U2 be set as being connected with each other and the interface 14 of arithmetic unit U2 is set as interface M2-2.

5. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that: accelerator is defeated Entering signal processing circuit (4) and being set as includes diode TVS3, resistance R15, resistance R16 and capacitor C5, diode TVS3's Cathode, one end port of resistance R15, one end port of resistance R16 and capacitor C5 one end port be set as being connected with each other and The other end port of the anode of diode TVS3, the other end port of resistance R16 and capacitor C5 is respectively set to be connected to ground,

6. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that: forward-reverse Signal processing circuit (5) is set as optocoupler control relay O3, optocoupler control relay O4, diode D3, resistance R10 and resistance R11, an input port of optocoupler control relay O3 are set as an input terminal of interface FRONT and optocoupler control relay O4 Mouth is set as interface BACK, and optocoupler controls another input port of relay O3 and another input terminal of optocoupler control relay O4 Mouth is set as being connected to ground and optocoupler controls an output port of relay O3 and an output end of optocoupler control relay O4 Mouth is respectively set to connect with the cathode of diode D3, and another output port of optocoupler control relay O3 is set as and resistance One end port of R10 connects and the other end port of resistance R10 is set as interface FRONT_-IN, optocoupler control relay O4's Another output port is set as connecting with one end port of resistance R11 and the other end port of resistance R11 is set as interface BACK_-IN, the anode of diode D3 are set as connecting with interface VCC.

7. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that: failure exports Indicating circuit (6) be set as include optocoupler control relay O2, resistance R12 and fuse F3, resistance R12 one end port set Be set to connect with interface VCC and the other end port of resistance R12 be set as with optocoupler control relay O2 an input port Connection, another input port of optocoupler control relay O2 is set as interface EEROR and the one of optocoupler control relay O2 is defeated Exit port is set as connecting with 24V output port of power source, and another output port of optocoupler control relay O2 is set as and insures One end port of silk F3 connects and the other end port of fuse F3 is set as interface EEROR_-OUT。

8. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that: cutting is started Machine power supply circuit (7) is set as including that optocoupler controls relay O1, resistance R13, switch K1 and fuse F5, resistance R13's One end port is set as connecting with interface VCC and the other end port of resistance R13 is set as controlling relay O1's with optocoupler Another input port of the connection of one input port, optocoupler control relay O1 is set as interface START_-EN1 and optocoupler control An output port of relay O1 is set as being connected to ground, and another output port of optocoupler control relay O1 is set as and switchs The input port of K1 connects and an output port of switch K1 is set as interface RUN_-Another output port of ON2, switch K1 It is set as connecting with one end port of fuse F5 and the other end port of fuse F5 is set as interface RUN_-ON1。

9. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that: instrument communicates Interface circuit (8) is set as including arithmetic unit U6, capacitor C6, capacitor C7, capacitor C8, capacitor C9, capacitor C10, fuse F6 Fuse F7, arithmetic unit U6 are provided with interface 1, interface 2, interface 3, interface 4, interface 5, interface 6, interface 7, interface 8, interface 9, interface 10, interface 11, interface 12, interface 13, interface 14, interface 15 and interface 16, the interface 1 of arithmetic unit U6 are set as and electricity The other end port of the connection of one end port and capacitor C6 of holding C6 is set as connecting with the interface 3 of arithmetic unit U6, arithmetic unit U6 Interface 4 be set as connecting with one end port of capacitor C7 and the other end port of capacitor C7 is set as connecing with arithmetic unit U6 Mouth 5 connects, and the interface 16 of arithmetic unit U6 is set as connecting with one end port of capacitor C8 and the other end port of capacitor C8 is set It is set to and is connect with the interface 2 of arithmetic unit U6, the interface 15 of arithmetic unit U6 is set as connecting with one end port of capacitor C9 and electricity The other end port for holding C9 is set as connecting with the interface 6 of arithmetic unit U6, and the interface 16 of arithmetic unit U6 is set as with capacitor C10's One end port connects and the other end port of capacitor C10 and the interface 15 of arithmetic unit U6 are respectively set to be connected to ground, operation The interface 10 of device U6 is set as interface TXD and the interface 9 of arithmetic unit U6 is set as interface RXD, and the interface 16 of arithmetic unit U6 is set It is set to and is connect with interface VCC and the interface 7 of arithmetic unit U6 is set as connecting with one end port of fuse F6, arithmetic unit U6's Interface 8 is set as connecting with one end port of fuse F7 and the other end port of fuse F7 is set as interface RXDDUT, The other end port of fuse F6 is set as interface TXDDUT.