An energy saving system for excavator arm

A technology of energy-saving system and motorized arm, which is applied to the components of fluid pressure actuation system, mechanically driven excavators/dredgers, earth-moving machines/shovels, etc., which can solve the problem of high overall cost, high cost and low cost of energy-saving systems. Practicality and other issues to achieve the effect of improving energy utilization efficiency, avoiding energy waste, and reducing power requirements

Active Publication Date: 2022-08-09
XUZHOU COLLEGE OF INDAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In some schemes that use hydraulic pump motors as energy conversion components, it is often required that the hydraulic pump motor has a bidirectional rotation function and the swash plate has a neutral zero crossing function. This hydraulic pump motor can switch the working state in motor mode or pump mode. , which has four-quadrant working characteristics, such as image 3 As shown, the cost of this hydraulic pump is relatively high, which in turn causes the overall cost of the energy-saving system to be relatively high, reducing its practicability

Method used

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  • An energy saving system for excavator arm
  • An energy saving system for excavator arm
  • An energy saving system for excavator arm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] like Figure 4 , Image 6 and Figure 7 As shown, an energy saving system for an excavator arm includes an oil source 1, a first one-way valve 2, a main reversing valve 3, a boom hydraulic cylinder 4, a control handle of the excavator, a fifth one-way valve 17, a hydraulic Motor 6, accumulator 10, gearbox 8, first reversing valve 11, clutch 9, flywheel 7, second one-way valve 13, third one-way valve 14, fourth one-way valve 16, rotational speed detection device and The controller; the oil source 1 is connected to the P port of the main reversing valve 3 through the first check valve 2, and the T port of the main reversing valve 3 is connected to the oil tank 5; the A port and the B port of the main reversing valve 3 are respectively connected with The rodless cavity and the rod cavity of the boom hydraulic cylinder 4 are connected; the cylinder barrel of the boom hydraulic cylinder 4 is hinged on the turntable 200, and the piston rod end of the boom hydraulic cylinder...

Embodiment 2

[0068] like Figure 5 to Figure 7 As shown, an energy saving system for an excavator arm includes an oil source 1, a first one-way valve 2, a main reversing valve 3, a boom hydraulic cylinder 4, a control handle of the excavator, a hydraulic motor 6, and an accumulator 10. , gearbox 8, first reversing valve 11, clutch 9, flywheel 7, second one-way valve 13, third one-way valve 14, fourth one-way valve 16, rotational speed detection device and controller;

[0069] The oil source 1 is connected to the P port of the main reversing valve 3 through the first check valve 2, and the T port of the main reversing valve 3 is connected to the oil tank 5; the A port and the B port of the main reversing valve 3 are respectively connected with the boom hydraulic pressure. The rodless cavity and the rod cavity of the cylinder 4 are connected; the cylinder barrel of the boom hydraulic cylinder 4 is hinged on the turntable 200, and the piston rod end of the boom hydraulic cylinder 4 is hinged ...

no. 1 example

[0102] The energy recovery process

[0103] It is assumed that the boom hydraulic cylinder 4 has been extended at this time, and the boom 100 is in a higher position. When the boom 100 needs to be lowered, the operator sends a boom lower discharge signal to the controller through the corresponding button on the joystick, and the controller (not shown) controls the electromagnetic solenoid of the main reversing valve 3 after receiving the boom lower discharge signal. The iron Y1a, the electromagnet of the first reversing valve 11 and the clutch 9 are energized, and a control signal X is sent to the linear electric push rod 806 to control the extension of the set length, so that the gearbox 8 is switched to the working gear state A, and works In the gear state A, the transmission 8 is in a forward rotation state. At the same time, the controller sends a control signal A to the hydraulic motor 6 to adjust its displacement. The oil source 1 enters the rod cavity of the boom hydr...

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Abstract

An energy saving system for an excavator arm, the P port of the hydraulic motor is connected with the rodless cavity of the boom hydraulic cylinder through the first reversing valve, the A port is connected with the accumulator, and the drive shaft of the hydraulic motor is connected through the gearbox and the clutch. Connect with the flywheel; both the B port of the second check valve and the A port of the third check valve are connected to the A port of the first reversing valve, the A port of the second check valve and the B port of the third check valve It is respectively connected with the P port of the oil tank and the main reversing valve; the gearbox includes a box body, a first transmission shaft unit, a second transmission shaft unit, a slider assembly, a shift fork and a linear electric push rod, and the first transmission shaft unit includes the first transmission shaft unit. A transmission shaft, a first bevel gear A, a shaft sleeve A, a third gear A, a fourth gear A, a shaft sleeve B and a second bevel gear A, the second transmission shaft unit includes a second transmission shaft, a first bevel gear The slider assembly includes a slider body, a first transition gear ring and a second transition gear ring. The system can reduce the manufacturing cost of the recycling system.

Description

technical field [0001] The invention belongs to the technical field of hydraulic transmission, and in particular relates to an energy saving system for an excavator arm. Background technique [0002] Hydraulic excavators are widely used in various construction fields. Hydraulic excavators have shortcomings such as high fuel consumption and low efficiency, and their energy-saving research is imminent. [0003] figure 1 It is a schematic diagram of a common excavator structure at present. The end of the boom 100 is hinged on the turntable 200 , the cylinder of the boom hydraulic cylinder 101 is hinged on the turntable 200 , and the piston rod end of the boom hydraulic cylinder 101 is hinged at the middle of the boom 100 . When the piston rod of the boom hydraulic cylinder 101 performs telescopic motion, the boom 100 can be driven to perform lifting and lowering actions. During the working process of the excavator, the boom lifts frequently, and due to the large mass of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F3/42E02F9/22F16H3/32F16H3/40F15B21/14F15B1/02F15B11/08
CPCE02F3/42E02F9/22E02F9/2217E02F9/2264E02F9/2267F16H3/002F16H3/32F16H3/40F15B21/14F15B1/02F15B11/08
Inventor 李建松许大华张文婷
Owner XUZHOU COLLEGE OF INDAL TECH
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