我们公司新产品--VD型手拉葫芦，较普通产品具有以下特点：
1.整体机身采用高 强度板材拉伸冲压而成，强度高，左右墙板、外墙板、起重轮带整体轴承，运转灵活，手拉力畅快轻盈；
2.内部齿轮传动件均采用合金钢和严格的渗碳热处理工艺，相比传统工艺增加了齿轮的抗耐磨性；
3.配置长轴止退垫圈限位装置预防葫芦链条下降到底部时，链轮和螺母锁死，而导致刹车失灵，产生an全问题；
4.冲压式导链板，使链条导向更顺畅，防护效果好；
5.手罩壳采用卷边加强筋设计，外观精美，整体机身强度更高，增加手拉链运行顺畅度；
6.采用高 强度G80辰力专 利链条。
Our company’s latest products.VD Series chain block.Compared with common products，they have the following characteristis.
1. left and right wall panels，outer wall panels，lifting wheel with overall bearing，flexible operation，smooth and light hand tension；
2. The internal gear transmission parts are made of 20CrMnTi alloy steel and strict carburizing heat treatment process；
3. Equipped with long shaft stop back washer limit device to prevent the chain down to the bottom，sprocket and nut locked，resulting in brake failure and safety problems；
4. Stamping chain guide plate，make the chain guide more smoothly，better protection；
5. The hand cover shell adopts the design of rolled edge reinforcement，higher overall body strength，increasing the smooth operation of the hand chain；
6. Use high strength T8 European standard lifting chain.
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