A series hybrid system for excavator boom
A hybrid system, series technology, applied in hybrid vehicles, mechanically driven excavators/dredgers, motor vehicles, etc., can solve problems such as the influence of the falling speed of the boom, the inconvenient installation of the accumulator, and the pressure rise. , to achieve significant energy-saving effect, reduce volume and mass, and improve efficiency
Active Publication Date: 2022-08-09
山东海晴工程机械制造有限公司
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Problems solved by technology
The hydraulic recovery scheme takes advantage of the accumulator’s high power density and the ability to absorb pressure shocks. However, due to the low density of energy stored in the accumulator, if more energy needs to be stored, a larger accumulator will be required, which in turn will Occupies a large space, and the installation of the accumulator is also very inconvenient
In addition, the pressure of the accumulator will rise with the increase of the stored oil, which will affect the falling speed of the boom
Method used
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Embodiment Construction
[0029] The following combined with the attachment is further explained to the present invention.
[0030] like Figure 3 to Figure 5 It shows that the present invention provides a series of connected hybrid systems for mining motor arm, including original motivation 6, fuel tank 5, hydraulic pump 1. First -way valve 2, main exchange valve 3, hydraulic armor hydraulic pressure Cylinder 4. The manipulation handle of the excavator, second one -way valve 14, hydraulic motor 7, one -way clutch 10, first transmission 1701, first clutch 901, flywheel 8, second clutch 902, second transmission 1702, hydraulic pump, hydraulic pump / Motor 12, third one -way valve 15, speed sensor 20 and controller;
[0031] As a preferred, the original motivation 6 is the diesel engine; the output shaft of the original motivation 6 is connected to the transmission shaft of the hydraulic pump 1, and the S portion and P port of hydraulic pump 1 are compared with the A and the A and the first one -way valve 2 re...
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A series hybrid power system for excavator arm, the output shaft of the prime mover is connected with the transmission shaft of the hydraulic pump, the S port and the P port of the hydraulic pump are respectively connected with the oil tank and the A port of the first check valve, The B port of the first one-way valve is connected to the P port of the hydraulic motor and the B port of the second one-way valve respectively, and the T port of the hydraulic motor and the A port of the second one-way valve are connected to the oil tank; The clutch, the first transmission and the first clutch are connected with the transmission shaft at one end of the flywheel, and the transmission shaft at the other end of the flywheel is connected with the transmission shaft of the hydraulic pump / motor through the second clutch and the second transmission; the S port and the P port of the hydraulic pump / motor It is connected to the fuel tank and the P port of the main reversing valve, respectively. The A port and the B port of the main reversing valve are respectively connected to the rod cavity and the rodless cavity of the boom hydraulic cylinder, and the A port and the B port of the third check valve are respectively connected. They are respectively connected with the fuel tank and the rod cavity of the boom hydraulic cylinder. The system can recover the energy of the boom and can also efficiently reuse the energy.
Description
Technical field [0001] The present invention is a hydraulic transmission technology field, which involves the series of connected hybrid systems for mining motor arm. Background technique [0002] Hydraulic excavators are widely used in various construction areas. Hydraulic excavators have disadvantages such as high fuel consumption and low efficiency, and their energy -saving research is imminent. [0003] figure 1 Drives for the current universal digging motor arm system structure. Among them, the end of the moving arm 100 is hinged on the turning table 200, the cylinder cylinder of the hydraulic cylinder 4 of the moving arm is hinged on the turning table 200, and the end of the piston rod of the hydraulic cylinder 4 of the moving arm is hinged in the middle of the moving arm 100. When the piston rod of the hydraulic cylinder 4 of the moving arm is used for telescopic exercise, the moving arm 100 can be promoted and decentralized. During the work process, the excavator's motiv...
Claims
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IPC IPC(8): E02F3/42E02F9/22
CPCE02F3/42E02F9/22E02F9/2217E02F9/2267Y02T10/62
Inventor 李建松黎少辉孙金海
Owner 山东海晴工程机械制造有限公司