Forward-reverse-rotation transmission chain tensioning device and land leveler balance box
A technology of transmission chain and tensioning device, applied in the direction of transmission device, belt/chain/gear, mechanical equipment, etc., can solve the problems such as tooth skipping and de-chaining of chain transmission, which can prolong life, improve reliability, increase The effect of the large meshing wrap angle
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Embodiment 1
[0023] like figure 1 As shown, the forward and reverse transmission chain tensioning device in this embodiment includes a driving sprocket 13, a driven sprocket 9, and a double-acting hydraulic cylinder 14; the driving sprocket 13 and the driven sprocket 9 rotate in the same direction through the chain 12 connect. An upper tensioning slide 10 is provided on the upper side of the chain 12 , and a lower tensioning slide 11 is provided on the lower side of the chain 12 . The two-way acting hydraulic oil cylinder 14 is a double-piston rod oil cylinder, and the two piston rods of the double-piston rod oil cylinder are fixedly connected with the upper tensioning slide 10 and the lower tensioning slide 11 respectively, and the piston movement direction of the double-way acting hydraulic oil cylinder is in line with the chain 12 top or The lower edge of the chain is vertical. When the piston of the double-acting hydraulic oil cylinder moves downward, the upper piston rod of the doub...
Embodiment 2
[0028] The chain drive in the balance box of the grader is as figure 2 As shown, its driving sprocket 13 is a double-row chain sprocket, and a driven sprocket 9 is respectively arranged on the front side and the rear side of the driving sprocket 13, and each driven sprocket 9 passes through a chain 12 and The drive sprocket 13 is connected to rotate in the same direction. The upper side of the front side chain is provided with an upper tensioning slide seat, and the lower side is provided with a lower tensioning slide seat. The rod and the lower piston rod are correspondingly connected.
[0029] Similarly, an upper tensioning slide is provided above the upper side of the rear side chain, and a lower tensioning slide is provided under the lower side. The upper piston rod and the lower piston rod are correspondingly connected.
[0030] The upper chamber of the front hydraulic cylinder communicates with the lower chamber of the rear hydraulic cylinder through pipelines, the l...
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