CN210766964U

CN210766964U - Automatic control device for mechanical accelerator of engineering machinery

Info

Publication number: CN210766964U
Application number: CN201921226337.9U
Authority: CN
Inventors: 朱文来; 武香菊; 张强; 于志华
Original assignee: Shandong Lingong Construction Machinery Co Ltd
Current assignee: Shandong Lingong Construction Machinery Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-06-16
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses an engineering machine tool's mechanical throttle automatic control device belongs to engineering machine tool technical field. The defects of poor control precision and poor flexibility of the rotating speed of the mechanical accelerator of the engineering machinery in the prior art are overcome. The automatic throttle control system mainly comprises a throttle self-setting switch, a gear switch, an ECU (electronic control unit), a throttle motor, a throttle pull wire and an engine rotating speed sensor, wherein the ECU is respectively connected with the throttle self-setting switch, the gear switch, the engine rotating speed sensor and the throttle motor, the ECU and the throttle motor are respectively provided with a CAN (controller area network) communication module, and the ECU transmits signals to the throttle motor through the CAN communication module. The utility model is used for mechanical throttle's automatic control.

Description

Automatic control device for mechanical accelerator of engineering machinery

Technical Field

The utility model belongs to the technical field of engineering machine tool, specifically speaking especially relates to an engineering machine tool's mechanical throttle automatic control device.

Background

Small machines in engineering machinery, such as a small excavator and a road roller, mainly acquire a resistance-type potentiometer analog signal sent by a gear switch through a control device, and then output the analog signal to an accelerator motor by using the control device to control the accelerator motor to push and pull an accelerator pull wire, so that the rotating speed control under different gears is realized, and the control precision is low and the flexibility is poor.

Disclosure of Invention

The utility model aims at providing an engineering machine tool's mechanical throttle automatic control device to overcome the poor defect with the flexibility difference of engineering machine tool's among the prior art mechanical throttle rotational speed control precision.

The utility model discloses an adopt following technical scheme to realize: the automatic mechanical accelerator control device for the engineering machinery comprises an accelerator self-setting switch, a gear switch, an ECU (electronic control unit), an accelerator motor, an accelerator pull wire and an engine rotating speed sensor, wherein the ECU is respectively connected with the accelerator self-setting switch, the gear switch, the engine rotating speed sensor and the accelerator motor, the ECU and the accelerator motor are respectively provided with a CAN (controller area network) communication module, and the ECU transmits signals to the accelerator motor through the CAN communication module.

Further, the gear switch transmits a gear signal to the ECU through a Gray code.

Further, the gear switch is an accelerator knob switch.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses on automatically controlled throttle device's basis, ECU uses CAN communication module to transmit the control signal of throttle motor push rod position to throttle motor, has reduced control signal and has received the possibility of disturbing, has promoted the control accuracy who keeps off the position rotational speed.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic diagram of the detection and logic control circuit of the present invention.

In the figure: 1. an accelerator self-tuning switch; 2. a gear switch; 3. an ECU; 4. an accelerator motor; 5. a throttle cable; 6. an accelerator swing handle; 7. a throttle motor push rod; 8. an engine speed sensor.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example 1:

the utility model provides an engineering machine tool's mechanical throttle automatic control device, includes throttle self-tuning switch 1, fender position switch 2, ECU3, throttle motor 4, throttle stay 5, engine speed sensor 8, ECU3 connects throttle self-tuning switch 1, fender position switch 2, engine speed sensor 8 and throttle motor 4 respectively, ECU3 and throttle motor 4 install CAN communication module respectively, and ECU3 passes through CAN communication module to throttle motor 4 transmission signal.

Example 2:

a mechanical accelerator automatic control device of engineering machinery, the gear switch 2 transmits a gear signal to an ECU3 through Gray code; the gear switch 2 is an accelerator knob switch; the other structure is the same as embodiment 1.

Throttle is from turning switch 1 and is the rocker switch, ECU3 is the electronic control unit in the utility model.

The utility model has the function of automatic throttle setting during operation, the self-setting process after the first start of the engineering machinery is as follows, the operator opens the throttle self-setting switch 1, as shown in figure 1, the position of the throttle self-setting switch 1 is at the I position, the terminal 1 and the terminal 5 of the throttle self-setting switch 1 are connected, the terminal 2 and the terminal 6 are connected, the throttle self-setting switch 1 transmits the automatic setting signal to the ECU3, the ECU3 transmits the information request of the position of the throttle motor push rod 7 to the throttle motor 4 through the CAN communication module according to the preset information of the position of the throttle motor push rod 7, the CAN communication module in the throttle motor 4 controls the extending position of the throttle motor push rod 7 through the internal drive circuit after receiving the CAN information, the throttle motor push rod 7 pulls the throttle pull wire 5 to change the angle of the throttle swing handle 6, the ECU3 detects the signal transmitted by the engine speed sensor 8, when the engine speed meets the requirement of the ECU3 on the speed of the set gear, the CAN information value of the position of the accelerator motor push rod 7 at the moment is stored, and the automatic setting of one gear of the gear switch 2 is completed.

And sequentially recording CAN information values of the positions of the accelerator motor push rods 7 under each gear of the gear switch 2 by controlling the gradual change of the positions of the accelerator motor push rods 7.

In the working process of the engineering machinery after the engineering machinery is started for the first time, when the gear needs to be adjusted, a worker firstly rotates the gear switch 2, the ECU3 receives a Gray code signal sent by the gear switch 2 to judge gear input information, the position of the accelerator motor push rod 7 under each gear of the gear switch 2 recorded in the self-adjusting process is transmitted to the accelerator motor 4 through the CAN communication module, the CAN communication module in the accelerator motor 4 receives a CAN information value, the accelerator motor 4 controls the extending position of the accelerator motor push rod 7 through an internal driving circuit according to the CAN information value, the accelerator motor push rod 7 pulls the engine accelerator pull wire 5 to change the angle of the accelerator swing handle 6, and the rotating speed control is realized.

Claims

1. The utility model provides an engineering machine tool's mechanical throttle automatic control device, includes throttle self-tuning switch (1), keeps off position switch (2), ECU (3), throttle motor (4), throttle stay (5), engine speed sensor (8), ECU (3) are connected throttle self-tuning switch (1), keep off position switch (2), engine speed sensor (8) and throttle motor (4) respectively, its characterized in that: and the ECU (3) and the accelerator motor (4) are respectively provided with a CAN communication module, and the ECU (3) transmits signals to the accelerator motor (4) through the CAN communication modules.

2. The automatic mechanical throttle control apparatus for construction machinery according to claim 1, wherein: and the gear switch (2) transmits a gear signal to the ECU (3) through a Gray code.

3. The automatic mechanical throttle control apparatus for construction machinery according to claim 2, wherein: the gear switch (2) is an accelerator knob switch.