利用最佳峰值电流追踪消除泵送流量损失的实验研究.pdf

机床与液压
Dec.2012
Hydromechatronics Engineering
Vol 40 No 24
DOI:10.3969/j.is.1001-3881.2012.24.023
The Experimental Study of Using Best Current Peak to
Track the Pumping Flow Loss
GUO Ruil,, ZHAO Jingyi+, WANG Yongchang, LI Wei, YAN Erdong
1. Hebei Prouincial Key Laboratory of Heauy Machinery Fluid Power Transmission and Control
Yanshan niversity, nhuangdao 6004, hina; 2. Key Laboratory of Advanced Forging
Stamping Technology and Science, Yanshan University, Qinhuangdao 066004, China
3. The State Key Laboratory of Fluid Power Transmission and Control, Qinhuangdao 066004, China
Abstract: Pumping flow loss will cause spraying without concrete at the main pump reversing mo-
ment. It leads to the uneven gunite concrete, the dropping of supporting strength, the delay of
construction period. n allusion to the instantly pumping flow loss at the main pump reversing mo
ment, ths text analysis the cause of pumping flow loss by experiment, puts forward the solution
of using best current peak to track the pumping flow loss and establishes the mathematical mod
el. The paper verifies the correctness of the model through a number of experiments. The import
of this model in the engineering practice eliminates the intermittent phenomenon at reversing m
ments and guarantees the construction quali. The conclusions have guiding sigificance for the
improvement of electro-hydraulic control system related to construction machinery.
y words: shotcrete manipulator, flow loss, peak current, spraying speed
underground engineering s temporary or permanen
1. itroduction
support nurse. It uses compression air or other power
to jet the mixture, which is made up of cement
In the 2lst century, tunnel and underground en- sand, stones and accelerating agent, onto the sprayed
gineering has experienced a rapid development. The surface. The mixture is pressured to the nozzle
mext 20 years, the scale of transport tunnel engineer- through a pipe line, then sprayed to the surface
ing will be much larger, and the technology will be-high speed. After condensing and hardening, it forms
come more and more difficult. In order to accelerate the supporting layer on the surface[2]. The integral
the progress of the project, the
le mechanization con-
concrete jetting unit reduces the concentration of dust
struction skills must be improved and the technical and the rebound rate of concrete. It also eliminates
progress of domestic equipment should also be promo-the health hazards for construction personnel. At the
Iter
lity of
d th
to tunnel, road slope, building fo
pit and
formity of concrete are both improved
1PJ3012A
te spraying unit is fully hydrau
lic controlled based on the CAN bus. It is mainly com-
Received: 2012-08-26
posed of chassis, spray arm, hydraulic and electrical
Sponsored by Natural Science Foundation of Hebei Province control systems, as well as lateral line system. Shot
( E2012203071 Foundation of The State Key laboratory of crete unit drive systems and pumping systems use the
Fluid Power ransmission and Control (Gzkf-201103) Sei-closed-type electro-hydraulic control system, such as
ence and technology research and development project of Qin-spray arm s 9 movements, leg movements, steering,
huangdao(201101A138)
GUO