CN206351706U

CN206351706U - Variable speed electric control gear for hydraulic travel system

Info

Publication number: CN206351706U
Application number: CN201621443846.3U
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: 2017-07-25
Anticipated expiration: 2026-12-27

Abstract

A kind of variable speed electric control gear for hydraulic travel system, includes controller circuitry（1）, power circuit（2）, electric pushrod drive circuit（3）, accelerator input signal processing circuit（4）, forward-reverse signal processing circuit（5）, failure output indication circuit（6）, cut-out engine power supply circuit 7 and instrument communication interface circuit（8）, power circuit（2）, electric pushrod drive circuit（3）, accelerator input signal processing circuit（4）, forward-reverse signal processing circuit（5）, failure output indication circuit（6）, cut-out engine power supply circuit 7 and instrument communication interface circuit（8）It is respectively set to and controller circuitry（1）Interface connection, controller, absolute value encoder and electric pushrod are applied in closed type hydraulic system, controller accurately controls variable pumpage by electric pushrod, variable pumpage is no longer controlled using mechanical pull bar manually, therefore walking linearity is improved, steering manipulation is more precisely and safer.

Description

Variable speed electric control gear for hydraulic travel system

First, technical field

The utility model is related to a kind of variable speed electric control gear, especially a kind of stepless change for hydraulic travel system Fast electric control gear.

2nd, background technology

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 part, in existing hydraulic travel system, and hydraulic travel system is largely using mechanical pull bar Control variable pumpage, completes to turn to while variable pump and heavy gearbox coordinate manually, side braking opposite side driving, therefore Radius of turn is very big, and needs multiple action collaborations to complete when turning, and handling extreme difference currently there are no a kind of 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 linearity is good, and steering manipulation is more precisely, more comfortably, more Safety.

Based on existing technical problem, technical characteristic and technique effect, application technical scheme of the present utility model is made.

3rd, the content of the invention

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

In order to overcome above-mentioned technical disadvantages, the purpose of this utility model is to provide a kind of for the stepless of hydraulic travel system Speed change electric control gear, therefore walking linearity is improved, steering manipulation is more precisely and safer.

To reach above-mentioned purpose, the utility model is adopted the technical scheme that：Include controller circuitry, power circuit, Electric pushrod drive circuit, accelerator input signal processing circuit, forward-reverse signal processing circuit, failure output indication electricity Road, cut-out engine power supply circuit and instrument communication interface circuit,

Power circuit, electric pushrod drive circuit, accelerator input signal processing circuit, forward-reverse signal transacting electricity Road, failure output indication circuit, cut-out engine power supply circuit and instrument communication interface circuit are respectively set to and controller electricity The interface connection on road.

Due to devising controller circuitry, power circuit, electric pushrod drive circuit, accelerator input signal transacting electricity Road, forward-reverse signal processing circuit, failure output indication circuit, cut-out engine power supply circuit and instrument communication interface electricity Road, controller, absolute value encoder and electric pushrod is applied in closed type hydraulic system, controller is accurate by electric pushrod Variable pumpage is controlled, variable pumpage is no longer controlled using mechanical pull bar manually, therefore improves walking linearity, behaviour is turned to Control is more precisely and safer.

The utility model is devised, and electric pushrod is driven electricity in the way of basis signal is output as with controller circuitry Road, accelerator input signal processing circuit, forward-reverse signal processing circuit, failure output indication circuit, cut-out engine are supplied Circuit and instrument communication interface circuit are connected with each other with controller circuitry.

The utility model is devised, and controller circuitry is set to include controller U5, resistance R2, resistance R3, resistance R4 With 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,

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

Controller U5 interface 17 is set to be connected with the interface JIASUQI of accelerator input signal processing circuit,

Controller U5 interface 18 is set to the interface START with cut-out engine power supply circuit_-EN1 connections,

Controller U5 interface 19 is set to interface VCC,

Controller U5 interface 21 is set to be connected with the output port of power circuit,

Controller U5 interface 27 is set to be connected with the interface RXD of instrument communication interface circuit and controller U5 connects Mouth 28 is set to be connected with the interface TXD of instrument communication interface circuit,

Controller U5 interface 35 is set to be connected with cutting off the interface RUN of engine power supply circuit,

Controller U5 interface 36 is set to the interface M2- of the controller U2 by resistance R2 Yu electric pushrod drive circuit 2PWM connections and controller U5 interface 38 are set to the interface M2-INT companies with the controller U2 of electric pushrod drive circuit Connect,

Controller U5 interface 39 is set to be connected with the interface ERROR of failure output indication circuit,

Controller U5 interface 40 is set to interface PWM_-IN and controller U5 interface 40 are set to interface PWM_-OUT,

Controller U5 interface 42 is set to be connected with the interface FRONT of forward-reverse signal processing circuit,

Controller U5 interface 44 is set to be connected with the interface BACK of forward-reverse signal processing circuit,

Controller U5 interface 45 is set to be connected with the controller U1 of electric pushrod drive circuit interface M1-INT,

Controller U5 interface 46 is set to the interface M2- of the controller U2 by resistance R5 Yu electric pushrod drive circuit 1PWM connections, controller U5 interface 47 is set to the interface of the controller U1 by resistance R4 Yu electric pushrod drive circuit M1-2PWM connections and controller U5 interface 48 are set to by resistance R3 with the controller U1's of electric pushrod drive circuit Interface M1-1PWM connections,

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

Controller U5 interface 63 is set to pull up the interface ENC2 of processing with code device signal_-08 connection and controller U5 interface 64 is set to pull up the interface ENC1 of processing with code device signal_-08 connection.

The utility model is devised, and power circuit is set to include power circuit I and power circuit II,

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

Fuse F1 one end port is set to be connected with external power supply and fuse F1 other end port is set to Be connected with diode D1 positive pole, diode D1 negative pole be respectively set to the negative pole with diode TVS1, electric capacity E1 positive poles and Arithmetic unit U3 interface 1 connects and diode TVS1 positive pole, electric capacity E1 negative poles, arithmetic unit U3 interface 5, arithmetic unit U3 Interface 3, diode D2 positive pole, electric capacity E2 negative pole and electric capacity C1 one end port are respectively set to be connected to ground, arithmetic unit U3 interface 2 be respectively set to be connected with inductance L1 one end port and diode D2 negative pole and arithmetic unit U3 interface 4 The other end port for being respectively set to the other end port with inductance L1, electric capacity E2 positive pole and electric capacity C1 is connected, and C1's is another End port be set to be connected with fuse F2 one end port and fuse F2 other end port and C1 other end port Setting is respectively set to be connected with the input port of power circuit II,

Power circuit II is set to include arithmetic unit U4, electric capacity E3, electric capacity C2, diode TVS2, resistance R8, diode LED1 and fuse F4, arithmetic unit U4 are provided with interface 1, interface 2 and interface 3,

Arithmetic unit U4 interface 1 is set to input port and arithmetic unit U4 interface 2, electric capacity E3 one end port, electricity One end port and diode TVS2 one end port for holding C2 are connected to ground respectively, arithmetic unit U4 interface 3, electric capacity E3 it is another Hold port, electric capacity C2 other end port and diode TVS2 other end port, resistance R8 one end port, fuse F4 One end port is set to interface VCC with the interface 3 for being set to interconnection and arithmetic unit U4, and resistance R8 other end port is set It is set to and is connected with the positive pole of diode (LED) 1 and the negative pole of diode (LED) 1 is set to be connected to ground, fuse F4 other end port It is set to be connected with controller U5 interface 21.

The utility model is devised, and electric pushrod drive circuit is set to include electric pushrod drive circuit I and electronic Push rod drive circuit II,

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

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

The utility model is devised, and accelerator input signal processing circuit is set to include diode TVS3, resistance R15, resistance R16 and electric capacity C5, diode TVS3 negative pole, resistance R15 one end port, resistance R16 one end port and electricity One end port for holding C5 is set to be connected with each other and diode TVS3 positive pole, resistance R16 other end port and electric capacity C5 Other end port be respectively set to be connected to ground,

Resistance R15 one end port is set to interface JIASUQI and resistance R15 one end port is set to interface JISUQIZHI。

The utility model is devised, and forward-reverse signal processing circuit is set to optocoupler control relay O3, optocoupler control Relay O4, diode D3, resistance R10 and resistance R11, an optocoupler control relay O3 input port are set to interface FRONT and optocoupler control relay O4 an input port are set to interface BACK, and optocoupler control relay O3's is another defeated Inbound port and optocoupler control relay O4 another input port be set to be connected to ground and optocoupler control relay O3 one Output port and optocoupler control relay O4 an output port are respectively set to be connected with diode D3 negative pole, optocoupler control Relay O3 another output port is set to be connected with resistance R10 one end port and resistance R10 other end port is set It is set to interface FRONT_-IN, optocoupler control relay O4 another output port are set to be connected with resistance R11 one end port And resistance R11 other end port is set to interface BACK_-IN, diode D3 positive pole are set to be connected with interface VCC.

The utility model is devised, and failure output indication circuit is set to include optocoupler control relay O2, resistance R12 With fuse F3, resistance R12 one end port is set to be connected with interface VCC and resistance R12 other end port is set to It is connected with an optocoupler control relay O2 input port, optocoupler control relay O2 another input port is set to interface EEROR and optocoupler control relay O2 an output port are set to be connected with 24V output port of power source, optocoupler control relay Device O2 another output port is set to be connected with fuse F3 one end port and fuse F3 other end port is set For interface EEROR_-OUT。

The utility model is devised, and cut-out engine power supply circuit is set to include optocoupler control relay O1, resistance R13, switch K1 and fuse F5, resistance R13 one end port be set to be connected with interface VCC and resistance R13 the other end Port is set to be connected with an optocoupler control relay O1 input port, and optocoupler control relay O1 another input port is set It is set to interface START_-EN1 and optocoupler control relay O1 an output port are set to be connected to ground, optocoupler control relay The output port that device O1 another output port is set to be connected and switch with switch K1 input port K1 is set to connect Mouth RUN_-ON2, switch K1 another output port be set to be connected with fuse F5 one end port and fuse F5 it is another One end port is set to interface RUN_-ON1。

The utility model is devised, instrument communication interface circuit be set to include arithmetic unit U6, electric capacity C6, electric capacity C7, Electric capacity C8, electric capacity C9, electric capacity C10, fuse F6 and fuse F7, arithmetic unit U6 are provided with interface 1, interface 2, interface 3, interface 4th, interface 5, interface 6, interface 7, interface 8, interface 9, interface 10, interface 11, interface 12, interface 13, interface 14, interface 15 and connect Mouth 16, arithmetic unit U6 interface 1 is set to be connected with electric capacity C6 one end port and electric capacity C6 other end port is set to It is connected with arithmetic unit U6 interface 3, arithmetic unit U6 interface 4 is set to be connected with electric capacity C7 one end port and electric capacity C7 Other end port is set to be connected with arithmetic unit U6 interface 5, and arithmetic unit U6 interface 16 is set to one end end with electric capacity C8 Mouth connection and electric capacity C8 other end port are set to be connected with arithmetic unit U6 interface 2, and arithmetic unit U6 interface 15 is set It is connected for one end port with electric capacity C9 and electric capacity C9 other end port is set to be connected with arithmetic unit U6 interface 6, is transported Calculate device U6 interface 16 be set to be connected with electric capacity C10 one end port and electric capacity C10 other end port and arithmetic unit U6 Interface 15 be respectively set to be connected to ground, arithmetic unit U6 interface 10 is set to interface TXD and arithmetic unit U6 interface 9 is set Interface RXD is set to, arithmetic unit U6 interface 16 is set to be connected with interface VCC and arithmetic unit U6 interface 7 is set to and protected Dangerous silk F6 one end port connection, arithmetic unit U6 interface 8 is set to be connected and fuse with fuse F7 one end port F7 other end port is set to interface RXDDUT, and fuse F6 other end port is set to interface TXDDUT.

In the technical program, the controller circuitry of basis signal, power circuit are output as with controller circuitry, electronic pushed away Bar drive circuit, accelerator input signal processing circuit, forward-reverse signal processing circuit, failure output indication circuit, cut-out 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, with novelty, creative and practicality, the term in the technical program is all that can use this Patent document in technical field is explained and understood.

4th, illustrate

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work Under, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is schematic diagram of the present utility model：

Fig. 2 is the circuit diagram of controller circuitry 1 of the present utility model：

Fig. 3 is the circuit diagram of power circuit 2 of the present utility model：

Fig. 4 is the circuit diagram of electric pushrod drive circuit 3 of the present utility model：

Fig. 5 is the circuit diagram of accelerator input signal processing circuit 4 of the present utility model：

Fig. 6 is the circuit diagram of forward-reverse signal processing circuit 5 of the present utility model：

Fig. 7 is the circuit diagram of failure output indication circuit 6 of the present utility model：

Fig. 8 is the circuit diagram of the present utility model for cutting off engine power supply circuit 7：

Fig. 9 is the circuit diagram of instrument communication interface circuit 8 of the present utility model.

5th, embodiment

According to guidelines for examination, to such as " having ", "comprising" and " comprising " term should used in the utility model It is interpreted as the presence or addition for not allotting one or more of the other element or its combination.

, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " are the orientation or position relationship of general expression, merely to It is easy to description the utility model and simplifies description, rather than indicates or imply that the device or element of meaning there must be specifically side Position, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.

As long as in addition, technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can just be combined with each other.

Below in conjunction with the utility model embodiment, the technical scheme in the utility model embodiment is carried out it is clear, It is fully described by, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole embodiments. Based on the embodiment in the utility model, what those of ordinary skill in the art were obtained under the premise of creative work is not made Every other embodiment, belongs to the scope of the utility model protection.

Accompanying drawing is one embodiment of the present utility model, and the present embodiment is illustrated with reference to accompanying drawing, includes controller electricity Road 1, power circuit 2, electric pushrod drive circuit 3, accelerator input signal processing circuit 4, forward-reverse signal processing circuit 5th, failure output indication circuit 6, cut-out engine power supply circuit 7 and instrument communication interface circuit 8,

Power circuit 2, electric pushrod drive circuit 3, accelerator input signal processing circuit 4, forward-reverse signal transacting Circuit 5, failure output indication circuit 6, cut-out engine power supply circuit 7 and instrument communication interface circuit 8 are respectively set to and controlled The interface connection of device circuit 1 processed.

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

Controller U5 interface 17 is set to be connected with the interface JIASUQI of accelerator input signal processing circuit 4,

Controller U5 interface 18 is set to the interface START with cut-out engine power supply circuit 7_-EN1 connections,

Controller U5 interface 19 is set to interface VCC,

Controller U5 interface 21 is set to be connected with the output port of power circuit 2,

Controller U5 interface 27 is set to be connected with the interface RXD of instrument communication interface circuit 8 and controller U5 Interface 28 is set to be connected with the interface TXD of instrument communication interface circuit 8,

Controller U5 interface 35 is set to be connected with cutting off the interface RUN of engine power supply circuit 7,

Controller U5 interface 36 is set to the interface of the controller U2 by resistance R2 Yu electric pushrod drive circuit 3 M2-2PWM connections and controller U5 interface 38 are set to the interface M2- with the controller U2 of electric pushrod drive circuit 3 INT connections,

Controller U5 interface 39 is set to be connected with the interface ERROR of failure output indication circuit 6,

Controller U5 interface 42 is set to be connected with the interface FRONT of forward-reverse signal processing circuit 5,

Controller U5 interface 44 is set to be connected with the interface BACK of forward-reverse signal processing circuit 5,

Controller U5 interface 45 is set to be connected with the controller U1 of electric pushrod drive circuit 3 interface M1-INT,

Controller U5 interface 46 is set to the interface of the controller U2 by resistance R5 Yu electric pushrod drive circuit 3 M2-1PWM connections, controller U5 interface 47 is set to connecing by the resistance R4 and controller U1 of electric pushrod drive circuit 3 Mouth M1-2PWM connections and controller U5 interface 48 are set to the controller by resistance R3 and electric pushrod drive circuit 3 U1 interface M1-1PWM connections,

In the present embodiment, power circuit 2 is set to include power circuit I and power circuit II,

In the present embodiment, electric pushrod drive circuit 3 is set to include electric pushrod drive circuit I and electric pushrod Drive circuit II,

In the present embodiment, accelerator input signal processing circuit 4 is set to include diode TVS3, resistance R15, electricity Hinder R16 and electric capacity C5, diode TVS3 negative pole, resistance R15 one end port, resistance R16 one end port and electric capacity C5 One end port is set to be connected with each other and diode TVS3 positive pole, resistance R16 other end port and electric capacity 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 to optocoupler control relay O3, optocoupler control relay Device O4, diode D3, resistance R10 and resistance R11, an optocoupler control relay O3 input port are set to interface FRONT simultaneously And an optocoupler control relay O4 input port is set to interface BACK, optocoupler control relay O3 another input port and Optocoupler control relay O4 another input port be set to be connected to ground and optocoupler control relay O3 an output port It is respectively set to be connected with diode D3 negative pole with an optocoupler control relay O4 output port, optocoupler control relay O3 Another output port be set to be connected with resistance R10 one end port and resistance R10 other end port is set to interface FRONT_-IN, optocoupler control relay O4 another output port are set to be connected and resistance with resistance R11 one end port R11 other end port is set to interface BACK_-IN, diode D3 positive pole are set to be connected with interface VCC.

In the present embodiment, failure output indication circuit 6 be set to include optocoupler control relay O2, resistance R12 and Fuse F3, resistance R12 one end port be set to be connected with interface VCC and resistance R12 other end port be set to Optocoupler control relay O2 input port connection, optocoupler control relay O2 another input port is set to interface EEROR and optocoupler control relay O2 an output port are set to be connected with 24V output port of power source, optocoupler control relay Device O2 another output port is set to be connected with fuse F3 one end port and fuse F3 other end port is set For interface EEROR_-OUT。

In the present embodiment, cut-out engine power supply circuit 7 be set to include optocoupler control relay O1, resistance R13, Switch K1 and fuse F5, resistance R13 one end port be set to be connected with interface VCC and resistance R13 other end port It is set to be connected with an optocoupler control relay O1 input port, optocoupler control relay O1 another input port is set to Interface START_-EN1 and optocoupler control relay O1 an output port are set to be connected to ground, optocoupler control relay O1 Another output port be set to be connected and switch a K1 output port with switching K1 input port to be set to interface RUN_-ON2, switch K1 another output port be set to be connected with fuse F5 one end port and fuse F5 it is another End port is set to interface RUN_-ON1。

In the present embodiment, instrument communication interface circuit 8 is set to include arithmetic unit U6, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity 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 16, arithmetic unit U6 interface 1 be set to be connected with electric capacity C6 one end port and electric capacity C6 other end port be set to Arithmetic unit U6 interface 3 is connected, arithmetic unit U6 interface 4 be set to be connected with electric capacity C7 one end port and electric capacity C7 it is another One end port is set to be connected with arithmetic unit U6 interface 5, and arithmetic unit U6 interface 16 is set to one end port with electric capacity C8 Connect and electric capacity C8 other end port is set to be connected with arithmetic unit U6 interface 2, arithmetic unit U6 interface 15 is set to It is connected with electric capacity C9 one end port and electric capacity C9 other end port is set to be connected with arithmetic unit U6 interface 6, computing Device U6 interface 16 be set to be connected with electric capacity C10 one end port and electric capacity C10 other end port and arithmetic unit U6 Interface 15 is respectively set to be connected to ground, and arithmetic unit U6 interface 10 is set to interface TXD and arithmetic unit U6 interface 9 is set For interface RXD, arithmetic unit U6 interface 16 is set to be connected with interface VCC and arithmetic unit U6 interface 7 is set to and insured Silk F6 one end port connection, arithmetic unit U6 interface 8 is set to be connected and fuse F7 with fuse F7 one end port Other end port be set to interface RXDDUT, fuse F6 other end port is set to interface TXDDUT.

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

Power circuit 2 first by LM2576HV-12 by 24V voltage conversions into 12V voltages, then passing through 78M05 again will 12V is converted into 5V voltages, and the data signal of forward-reverse signal processing circuit 5 is isolated by optocoupler, so as to realize circuit The electrical isolation of plate and external system, improves the antijamming capability of circuit board, and cut-out engine power supply circuit 7 passes through optocoupler control Whether relay coil is powered, so as to realize the break-make of control relay contact, finally realizes the break-make of generator, accelerator is defeated Enter the filtering process that signal processing circuit 4 completes external analog signal by RC low pass filters, and the signal after processing is passed MCU analog quantity inputs are 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 communicates with external meters is matched, electric pushrod drive circuit 3 passes through core Piece MC33886 controlled motors are run, and the chip receives the pwm signal from MCU, and adjustable straight according to PWM duty cycle output Voltage is flowed, so as to realize electric machine speed regulation, outside input signal is gathered 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, controller U5 interface 1 be set to pin F5.3 T_×D4_-2nd, controller U5 interface 2 is set to Pin PQ5 AI6/T3 PWMFL_-2nd, controller U5 interface 3 be set to pin PQ6 AI6/T4CLKD PWM7_-2nd, controller U5 connects Mouthfuls 4 be set to pin PQ7 AAD7/T4 PWM6_-2nd, controller U5 interface 5 is set to pin P6.0, controller U5 interface 6 is set For pin P6.1, controller U5 interface 7 be set to pin P6.2, controller U5 interface 8 is set to pin P6.3, controller U5 connects Mouth 9 is set to pin P1.0/ADC0/CCP1/R_×D4_-2nd, controller U5 interface 10 is set to pin P1.1/ADC1/CCP0/T_×D4_- 2nd, controller U5 interface 11 is set to pin P4.7/ T_×D2_-2nd, controller U5 interface 12 is set to pin P1.2/ADC2/SS/ ECI/CMPO, controller U5 interface 13 are set to pin P1.3/ADC3/MOSI, controller U5 interface 14 is set to pin P1.4/ ADC4MISO, controller U5 interface 15 are set to pin P1.5/ADC5/SCLH, controller U5 interface 16 is set to pin P1.6/ ADC6/R_×D_-3/PWM6, controller U5 interface 17 are set to pin P1.7/ADC7/ T_×D4_-3/PWMP7, controller U5 interface 18 are set to pin P5.4/RST/MCLKO/SS_-3/CMP-, controller U5 interface 19 are set to pin VCC, controller U5 interface 20 are set to pin P5.5/CMP+, controller U5 interface 21 is set to pin GND, controller U5 interface 22 is set to pin P4.0/ M0SI_-3rd, controller U5 interface 23 is set to pin P6.4, controller U5 interface 24 is set to pin P6.5, controller U5 connects Mouth 25 is set to pin P6.6, controller U5 interface 26 is set to pin P6.7, controller U5 interface 27 is set to pin P3.0/R_× D/INT4/T2CLKO, controller U5 interface 28 are set to pin P3.1/ T_×D/T2, controller U5 interface 29 are set to pin P3.2/INT0, controller U5 interface 30 are set to pin P3.3INT1, controller U5 interface 31 is set to pin P3.4/T0/ T1CLKO/ECI_-2nd, controller U5 interface 32 is set to pin P5.0R_×D3_-2nd, controller U5 interface 33 is set to pin P5.1/ T_×D3_-2nd, controller U5 interface 34 is set to pin P3.5/T1/TDCLKO/CCP0_-2nd, controller U5 interface 35 is set to pin P3.6/INT/ R_×D_-2/CCP1_-2nd, controller U5 interface 36 is set to pin P3.7/INT3/ T_×D_-2/PWM2, controller U5 Interface 37 be set to pin P7.0, controller U5 interface 38 is set to pin P7.1, controller U5 interface 39 is set to pin P7.2, controller U5 interface 40 are set to pin P7.3, controller U5 interface 41 is set to pin P4.1/MISO_-3rd, controller U5 interface 42 is set to pin P4.2/VR/PWM5_-2nd, controller U5 interface 43 is set to pin P4.3/SCLK_-3rd, controller U5 Interface 44 be set to pin P4.4/RD/PVM4_-2nd, controller U5 interface 45 is set to pin P20/A8/RSTDUT_-LDW, control Device U5 interface 46 is set to pin P21/A9/SCLK_-2/PWM3, controller U5 interface 47 are set to pin P2.2/A10/MISO_- 2PWM4, controller U5 interface 48 are set to pin P2.3/A10/MOSI_-2PWM5, controller U5 interface 49 are set to pin P2.4/SS_-2/PWMFLT, controller U5 interface 50 are set to pin P2.5/A13/CCP0_-3rd, controller U5 interface 51 is set For pin P2.6/A14/CCP1_-3rd, controller U5 interface 52 is set to pin P2.7/A15/PWM2_-2nd, controller U5 interface 53 is set It is set to pin P7.4, controller U5 interface 54 is set to pin P7.5, controller U5 interface 55 is set to pin P7.6, controller U5 Interface 56 be set to pin P7.7, controller U5 interface 57 is set to pin P4.5/ALE/PWM3_-2nd, controller U5 interface 58 It is set to pin P4.6/ R_×D2_-2nd, controller U5 interface 59 is set to pin P0.0/AD0 R_×D3, controller U5 interface 60 are set It is set to pin P0.1/AD1 T_×D3, controller U5 interface 61 are set to pin P0.2/AD2 R_×D4, controller U5 interface 62 are set It is set to pin P0.3/AD3T_×D4, controller U5 interface 63 are set to pin P0.4/AD4/T3CLKO and controller U5 interface 64 It is set to pin P5.2/ R_×D4_-2。

Arithmetic unit U3 interface 1 is set to pin VIN, arithmetic unit U3 interface 2 is set to pin DUT, arithmetic unit U3 interface 3 It is set to pin GND, arithmetic unit U3 interface 4 is set to pin FB and arithmetic unit U3 interface 5 is set to pin ON,

Arithmetic unit U4 interface 1 is set to pin VIN, arithmetic unit U4 interface 2 is set to pin GND and arithmetic unit U4 interface 3 are set to pin VDUT,

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

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

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

The utility model has lower feature：

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

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

3rd, due to devising electric pushrod drive circuit 3, accelerator input signal processing circuit 4, at forward-reverse signal Circuit 5, failure output indication circuit 6, cut-out engine power supply circuit 7 and instrument communication interface circuit 8 are managed, passes through electric pushrod Drive circuit 3, accelerator input signal processing circuit 4, forward-reverse signal processing circuit 5, failure output indication circuit 6, cut Disconnected engine power supply circuit 7 and instrument communication interface circuit 8, meet the performance needs for the walking chassis for chatting hydraulic control.

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

5th, due to devising technical characteristic of the present utility model, the work of set in the independent of technical characteristic and each other With, by experiment show, property indices of the present utility model for existing property indices be at least 1.7 times, lead to Crossing assessment has good market value.

Also other controller circuitrys 1 with being output as basis signal with controller circuitry 1, power circuit 2, electronic push away Bar drive circuit 3, accelerator input signal processing circuit 4, forward-reverse signal processing circuit 5, failure output indication circuit 6, The technical characteristic that cut-out engine power supply circuit 7 and instrument communication interface circuit 8 are connected all be embodiment of the present utility model it One, and each technical characteristic of embodiment described above can be combined arbitrarily, to meet Patent Law, patent regulation With the requirement of guidelines for examination, the no longer embodiment to all possible combination of each technical characteristic in above-described embodiment is all carried out Description.

Therefore it is every to include controller electricity in the variable speed electric control gear technical field for hydraulic travel system Road 1, power circuit 2, electric pushrod drive circuit 3, accelerator input signal processing circuit 4, forward-reverse signal processing circuit 5th, failure output indication circuit 6, cut-out engine power supply circuit 7 and instrument communication interface circuit 8, power circuit 2, electric pushrod Drive circuit 3, accelerator input signal processing circuit 4, forward-reverse signal processing circuit 5, failure output indication circuit 6, cut Disconnected engine power supply circuit 7 and instrument communication interface circuit 8 are respectively set in the technology that is connected with the interface of controller circuitry 1 Hold all in protection domain of the present utility model.

Claims

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

Power circuit（2）, electric pushrod drive circuit（3）, accelerator input signal processing circuit（4）, at forward-reverse signal Manage circuit（5）, failure output indication circuit（6）, cut-out engine power supply circuit（7）With instrument communication interface circuit（8）Respectively It is set to and controller circuitry（1）Interface 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 processed（1）The mode of basis signal is output as electric pushrod drive circuit（3）, accelerator input signal processing circuit （4）, forward-reverse signal processing circuit（5）, failure output indication circuit（6）, cut-out engine power supply circuit（7）It is logical with instrument Communication interface circuit（8）With controller circuitry（1）It is connected with each other.

3. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that：Controller electricity Road（1）Be set to 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 10th, interface 11, interface 12, interface 13, interface 14, interface 15, interface 16, interface 17, interface 18, interface 19, interface 20, interface 21st, interface 22, interface 23, interface 24, interface 25, interface 26, interface 27, interface 28, interface 29, interface 30, interface 31, interface 32nd, interface 33, interface 34, interface 35, interface 36, interface 37, interface 38, interface 39, interface 40, interface 41, interface 42, interface 43rd, interface 44, interface 45, interface 46, interface 47, interface 48, interface 49, interface 50, interface 51, interface 52, interface 53, interface 54th, interface 55, interface 56, interface 57, interface 58, interface 59, interface 60, interface 61, interface 62, interface 63 and interface 64,

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

4. 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 to include power circuit I and power circuit II,

Power circuit I is set to include fuse F1, diode D1, diode TVS1, electric capacity E1, arithmetic unit U3, diode D2, inductance L1, electric capacity E2, fuse F2 and electric capacity C1, arithmetic unit U3 are provided with interface 1, interface 2, interface 3, interface 4 and interface 5, fuse F1 one end port are set to be connected with external power supply and fuse F1 other end port is set to and two poles Pipe D1 positive pole connection, diode D1 negative pole is respectively set to negative pole, electric capacity E1 positive poles and arithmetic unit with diode TVS1 U3 interface 1 is connected and diode TVS1 positive pole, electric capacity E1 negative poles, arithmetic unit U3 interface 5, arithmetic unit U3 interface 3, One end port of diode D2 positive pole, electric capacity E2 negative pole and electric capacity C1 is respectively set to be connected to ground, and arithmetic unit U3's connects Mouth 2 is respectively set to be connected with inductance L1 one end port and diode D2 negative pole and arithmetic unit U3 interface 4 is set respectively The other end port for being set to the other end port with inductance L1, electric capacity E2 positive pole and electric capacity C1 is connected, C1 other end port It is set to be connected with fuse F2 one end port and fuse F2 other end port and C1 other end port sets and divided It is not set to be connected with the input port of power circuit II,

Power circuit II is set to include arithmetic unit U4, electric capacity E3, electric capacity C2, diode TVS2, resistance R8, diode (LED) 1 Fuse F4, arithmetic unit U4 are provided with interface 1, interface 2 and interface 3, arithmetic unit U4 interface 1 be set to input port and Arithmetic unit U4 interface 2, electric capacity E3 one end port, electric capacity C2 one end port and diode TVS2 one end port respectively with Ground is connected, arithmetic unit U4 interface 3, electric capacity E3 other end port, electric capacity C2 other end port and diode TVS2 it is another One end port, resistance R8 one end port, fuse F4 one end port and it is set to be connected with each other and arithmetic unit U4 connects Mouth 3 is set to interface VCC, and resistance R8 other end port is set to be connected with the positive pole of diode (LED) 1 and diode (LED) 1 is negative Pole is set to be connected to ground, and fuse F4 other end port is set to be connected with controller U5 interface 21.

5. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that：Electric pushrod Drive circuit（3）It is set to include electric pushrod drive circuit I and electric pushrod drive circuit II,

Electric pushrod drive circuit I is set to include arithmetic unit U1 and electric capacity 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, arithmetic unit U1 interface 1, arithmetic unit U1 interface 9, fortune One end port for calculating device U1 interface 10, arithmetic unit U1 interface 11, arithmetic unit U1 interface 12 and electric capacity C3 connects with ground respectively Connect and electric capacity C3 other end port is set to be connected with arithmetic unit U1 interface 17, arithmetic unit U1 interface 2 is set to connect Mouth M1-INT and arithmetic unit U1 interface 3 are set to interface M1-IPWM, arithmetic unit U1 interface 6 and arithmetic unit U1 interface 7 It is set to be connected with each other and arithmetic unit U1 interface 7 is set to interface M1-1, arithmetic unit U1 interface 4, arithmetic unit U1 connects 5 and arithmetic unit U1 of mouth interface 16 is set to be connected with 24V output port of power source and arithmetic unit U1 interface 19 is set to connect Mouth M1-2PWM, arithmetic unit U1 interface 18 is set to interface D1 and arithmetic unit U1 interface 13 is set to interface D2, arithmetic unit U1 interface 15 and arithmetic unit U1 interface 14 are set to be connected with each other and arithmetic unit U1 interface 14 is set to interface M1-2,

Electric pushrod drive circuit II is set to include arithmetic unit U2 and electric capacity 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, arithmetic unit U2 interface 1, arithmetic unit U2 interface 9, fortune One end port for calculating device U2 interface 10, arithmetic unit U2 interface 11, arithmetic unit U2 interface 12 and electric capacity C4 connects with ground respectively Connect and electric capacity C4 other end port is set to be connected with arithmetic unit U2 interface 17, arithmetic unit U2 interface 2 is set to connect Mouth M2-INT and arithmetic unit U2 interface 3 are set to interface M2-IPWM, arithmetic unit U2 interface 6 and arithmetic unit U2 interface 7 It is set to be connected with each other and arithmetic unit U2 interface 7 is set to interface M2-1, arithmetic unit U2 interface 4, arithmetic unit U2 connects 5 and arithmetic unit U2 of mouth interface 16 is set to the connection of 24V output port of power source and arithmetic unit U2 interface 19 is set to interface M2-2PWM, arithmetic unit U2 interface 18 are set to interface D1 and arithmetic unit U2 interface 13 is set to interface D2, arithmetic unit U2 Interface 15 and arithmetic unit U2 interface 14 be set to be connected with each other and arithmetic unit U2 interface 14 is set to interface M2-2.

6. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that：Accelerator is defeated Enter signal processing circuit（4）It is set to include diode TVS3, resistance R15, resistance R16 and electric capacity C5, diode TVS3's Negative pole, resistance R15 one end port, resistance R16 one end port and electric capacity C5 one end port be set to be connected with each other and The other end port of diode TVS3 positive pole, resistance R16 other end port and electric capacity C5 is respectively set to be connected to ground,

7. 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）It is set to optocoupler control relay O3, optocoupler control relay O4, diode D3, resistance R10 and resistance R11, an optocoupler control relay O3 input port is set to interface FRONT and optocoupler control relay O4 an input Mouth is set to interface BACK, optocoupler control relay O3 another input port and optocoupler control relay O4 another input Mouthful be set to be connected to ground and optocoupler control relay O3 an output port and an optocoupler control relay O4 output end Mouth is respectively set to be connected with diode D3 negative pole, and optocoupler control relay O3 another output port is set to and resistance R10 one end port is connected and resistance R10 other end port is set to interface FRONT_-IN, optocoupler control relay O4's Another output port is set to be connected with resistance R11 one end port and resistance R11 other end port is set to interface BACK_-IN, diode D3 positive pole are set to be connected with interface VCC.

8. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that：Failure is exported Indicating circuit（6）It is set to include optocoupler control relay O2, resistance R12 and fuse F3, resistance R12 one end port is set It is set to and is connected with interface VCC and resistance R12 other end port is set to an input port with optocoupler control relay O2 Connection, optocoupler control relay O2 another input port is set to interface EEROR and the one of optocoupler control relay O2 is defeated Exit port is set to be connected with 24V output port of power source, and optocoupler control relay O2 another output port is set to and insured Silk F3 one end port is connected and fuse F3 other end port is set to interface EEROR_-OUT。

9. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that：Cut-out is started Machine power supply circuit（7）It is set to include optocoupler control relay O1, resistance R13, switch K1 and fuse F5, resistance R13's One end port is set to be connected with interface VCC and resistance R13 other end port is set to optocoupler control relay O1's One input port is connected, and optocoupler control relay O1 another input port is set to interface START_-EN1 and optocoupler control A relay O1 output port is set to be connected to ground, and optocoupler control relay O1 another output port is set to and switched K1 input port, which connects and switchs a K1 output port, is set to interface RUN_-ON2, switchs K1 another output port It is set to be connected with fuse F5 one end port and fuse F5 other end port is set to interface RUN_-ON1。

10. the variable speed electric control gear according to claim 1 for hydraulic travel system, it is characterized in that：Instrument is led to Communication interface circuit（8）It is set to include arithmetic unit U6, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10, fuse F6 and fuse F7, arithmetic unit U6 are provided with interface 1, interface 2, interface 3, interface 4, interface 5, interface 6, interface 7, interface 8, connect Mouthfuls 9, interface 10, interface 11, interface 12, interface 13, interface 14, interface 15 and interface 16, arithmetic unit U6 interface 1 be set to Electric capacity C6 one end port is connected and electric capacity C6 other end port is set to be connected with arithmetic unit U6 interface 3, arithmetic unit U6 interface 4 is set to be connected with electric capacity C7 one end port and electric capacity C7 other end port is set to arithmetic unit U6's Interface 5 is connected, arithmetic unit U6 interface 16 be set to be connected with electric capacity C8 one end port and electric capacity C8 other end port Be set to be connected with arithmetic unit U6 interface 2, arithmetic unit U6 interface 15 be set to be connected with electric capacity C9 one end port and Electric capacity C9 other end port is set to be connected with arithmetic unit U6 interface 6, and arithmetic unit U6 interface 16 is set to and electric capacity C10 One end port connection and electric capacity C10 other end port and arithmetic unit U6 interface 15 be respectively set to be connected to ground, transport Calculation device U6 interface 10 is set to interface TXD and arithmetic unit U6 interface 9 is set to interface RXD, arithmetic unit U6 interface 16 It is set to be connected with interface VCC and arithmetic unit U6 interface 7 is set to be connected with fuse F6 one end port, arithmetic unit U6 Interface 8 be set to be connected with fuse F7 one end port and fuse F7 other end port is set to interface RXDDUT, fuse F6 other end port are set to interface TXDDUT.