Multi-operating condition chain tensioning device
A chain tensioning device and multi-working-condition technology, which is applied in transmission devices, belts/chains/gears, mechanical equipment, etc., can solve the problems of chain plate wear and lack of tension, and achieve small rolling friction and reduced wear effect
Active Publication Date: 2012-07-04
贾文良
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to overcome the chain tensioning device in the prior art which requires manual frequent adjustment or when the chain drive is in braking state, the tension cannot be obtained when the original tight side is converted into a loose side, and the pressure block is used to press the chain. The sliding friction of the plate will accelerate the wear of the chain plate, and provide a chain tensioning device that can keep the chain in a tensioned state under various working conditions and is wear-resistant
Method used
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[0028] Example: such as figure 1 As shown, a multi-working condition chain tensioning device includes a pair of brackets fixed on the frame 1 with guide grooves, and a roller device 3 that can press the chain 2 on the brackets. Both ends of the shaft 32 are symmetrically fixed with two sawtooth discs 4 whose outer contours gradually expand outward, and are provided with an elastic jacking device that can promote the rotation of the sawtooth discs 4 so that the sawtooth is pushed against the edge of the support 5 6. The support 5 is fixedly connected to the frame 1; the frame 1 is provided with an elastic lifting device 7 that can be pressed against the support shaft 32 of the roller so that the support shaft and the roller push against the chain 2.
[0029] Such as figure 2 As shown, the two ends of the supporting shaft 32 of the roller 31 are installed in the guide groove of the bracket 11 through the bushing 33, and the roller 31 is connected with the supporting shaft 32 b...
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The invention discloses a multi-operating condition chain tensioning device which aims at overcoming the defects that the chain tensioning device in the prior art needs manual adjustment or the original tensioned edge of the chain in transmission can not be tensioned when changed to the loosening edge during braking and adopting a pressing block to press a chain plate can result in fast abrasion,and provides a tensioning device capable of keeping a chain tensioned under various operating conditions. The multi-operating condition chain tensioning device comprises a pair of brackets and a roller device, wherein the brackets are arranged on a stander and are provided with guide grooves, and the roller device is arranged on the brackets for pressing a chain; and two ends of a roller fulcrum shaft are symmetrically and fixedly provided with two sawtoothed discs which have the outer edge contour gradually extending outwards and are provided with elastic jacking devices which can drive the sawtoothed discs to rotate so as to enable saw teeth to support the edge of a support, and the support is fixedly connected with the stander on which an elastic lifting device capable of being pressedbelow the roller fulcrum shaft to jack the fulcrum shaft together with the roller to the chain. The multi-operating condition chain tensioning device can keep the chain tensioned all the time under the operating condition of normal transmission or braking, and can reduce the abrasion of the chain by using the roller to jack the chain.
Description
technical field [0001] The invention belongs to the field of chain transmission, and in particular relates to a chain tensioning device, in particular to a chain tensioning device for chain transmission under braking conditions. Background technique [0002] Chain transmission devices are widely used in mechanical structures. Chain transmission has some characteristics of both gear transmission and belt transmission. The capacity is large, especially the center distance can be large and the structure is light; compared with the belt drive, the average transmission ratio of the chain drive is accurate, and the transmission efficiency is high, especially the pulling force of the chain on the shaft is small. However, the reliability of the chain transmission device is greatly affected by the tightness of the chain. Common chain tensioning devices include manual regular tensioning and automatic tensioning; some tensioning methods use a pressure plate to press the chain. A better...
Claims
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IPC IPC(8): F16H7/08
Inventor 贾文良
Owner 贾文良
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