Concrete Mixer comprises a power mechanism connected with a transmission mechanism through a shaft and a roller driven by the transmission mechanism,wherein a ring gear is arranged on the roller cylinder body and surrounds the roller cylinder body,and the transmission shaft is provided with a gear engaged with the ring gear.The utility model has the advantages of simple and reasonable structure,which can effectively overcome the slipping phenomenon between the roller of the support roller and the mixer when the gear and the ring gear mesh with the meshing of the gear and the ring gear;the transmission mechanism adopted can further ensure the elimination of friction between the roller of the support roller and the mixer Slipping phenomenon.
Concrete Mixer Concrete Mixer,Mobile Concrete Mixer,Electric Concrete Mixer,Portable Concrete Mixer Henan Chengjing Mechanical Electrical Equipment Company , http://www.asphalt-equipments.com
(1) The share of AC arc welding machine output in total output continued to decline, which was 37.41% of total output, which was a decrease of 6.42 percentage points from the same period of last year. However, output increased by 10.58% compared to the same period of last year, reaching 412 235 units.
(2) The proportion of DC arc welding machine output to total output continued to rise, which was 19.23% of total output, which was an increase of 8.43 percentage points over the same period of last year. Output increased by 117.62% compared to the same period of last year, reaching 211 920 units, a net increase. 106 425 units. The output of inverter, transistor, silicon rectifier, and thyristor DC arc welding machines increased by 150.34%, 147.33%, 62.99%, and 41.42% over the previous year, with a net increase of 91,310, 1022, 6,240, and 10 respectively. 439 sets.
(3) The proportion of automatic semi-automatic welding machines in total output decreased by 0.8 percentage point from the same period of last year to 31.13% of the total output. The output increased by 31.31% over the same period of last year, reaching 343 032 units, a net increase of 31 215 units. The output of MIG/MAG welders increased by 22.20% over the previous year, with a net increase of 33,088 units.
(4) The proportion of the output of the resistance welding machine to the total output decreased by 1.18 percentage points over the same period of last year, which was 7.55% of the total output. The output increased by 1.11% over the same period of the previous year, reaching 83,206 units. Among them, the output of welders decreased by 46.95% compared with the same period of last year, with a net decrease of 1785 units.
(5) Output of special, special and complete sets of welding equipment and other welding machines increased 16.05% over the same period of last year. Among them, CNC cutting machines, complete sets of welding equipment and plasma cutting machines. 
Analysis of Market Demand of Welding Equipment Industry in China
With the growth of China's steel industry, electric welding machines continue to be booming, production and sales have increased significantly, labor productivity has been greatly improved, and the overall economic situation of the welding equipment industry has performed well, but profit growth has been relatively slow.