Novel lower machine room drive chain tensioning device
A technology of tensioning device and driving chain, which is applied in the direction of transmission, mechanical equipment, transportation and packaging, etc. It can solve the problems that nylon blocks are easy to wear, nylon blocks are not easy to replace, and the tension of driving chains cannot be automatically adjusted. Long life, not easy to wear effect
Inactive Publication Date: 2017-12-15
SUZHOU XINDA ESCALATOR ACCESSORIES
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Problems solved by technology
A few manufacturers use nylon block to squeeze the drive chain to achieve tension, but this method makes the nylon block easy to wear, and the nylon block is not easy to replace after wear, and the tension of the drive chain cannot be automatically adjusted, which increases the difficulty of escalator maintenance.
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[0013] The invention relates to a new drive chain tensioning device in a lower machine room, which has a drive motor 1 and a main sprocket 3 connected to the drive motor 1 through a drive chain 2, and a small tension sprocket assembly is arranged on one side of the drive chain 2 4. The tensioning small sprocket assembly 4 is connected with a guide screw 5, and a stopper 6 is fixed on the guide screw 5, and a spring 7 installed on the guide screw 5 is arranged between the stopper 6 and the tensioning small sprocket 4. The screw rod 5 is connected with a support plate 8 fixed on the machine room truss, and the support plate 8 is arranged at both ends of the lead screw rod 5 .
[0014] Preferably, the tensioning small sprocket assembly 4 is arranged on the right side of the drive chain 2, and the driving chain 2 is tightened by using the tensioning small sprocket assembly 4, which can avoid the disadvantage of easy wear of the nylon block and improve the service life. According t...
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The invention relates to a novel lower machine room drive chain tensioning device, and belongs to the field of elevator control. The novel lower machine room drive chain tensioning device is provided with a drive motor and a main chain wheel which is connected to the drive motor through a drive chain. A small tensioning chain wheel assembly is arranged at one side of the drive chain and is further connected with a guide screw rod. The guide screw rod is fixedly connected with a stopping block. A spring installed on the guide screw rod is arranged between the stopping block and a small tensioning chain wheel. The guide screw rod is connected with supporting plates fixed to a machine room truss. The supporting plates are arranged at the two ends of the guide screw rod. The novel lower machine room drive chain tensioning device has the beneficial effects that the tensioning effect on the lower machine room drive chain can be achieved; compared with a common mode that a nylon block is used for compressing the drive chain, the small chain wheel with the tooth surface being quenched is used in the device, abrasion cannot happen easily and the service life is longer; the spring is used for compressing the small chain wheel to tension the drive chain; as long as the spring is adjusted to be at a proper compression amount during elevator installation and the proper pretightening force is reached, the drive chain can be automatically compressed, and no frequent manual adjustment is required in later-period maintenance.
Description
technical field [0001] The invention relates to a novel tensioning device for drive chains in a lower machine room, which belongs to the field of elevator control. Background technique [0002] GB16899-2011 "Safety Specifications for Manufacture and Installation of Escalators and Moving Walks" cancels the type of escalators with lower machine rooms. The escalators with the lower machine room produced by the current manufacturer are all sold abroad. Due to the small quantity of this type of ladder, few manufacturers pay attention to the need to tighten the drive chain when the machine room is placed below. Common products basically do not have drive chain tensioning devices installed in the lower machine room. A small number of manufacturers use nylon blocks to squeeze the drive chain to achieve tension, but this method makes the nylon block easy to wear, and the nylon block is not easy to replace after wear, and the tension of the drive chain cannot be automatically adjust...
Claims
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IPC IPC(8): B66B11/04F16H7/08
CPCF16H7/08B66B11/0469
Inventor 顾文华蓝玉鑫杨志华吴伟夏全忠
Owner SUZHOU XINDA ESCALATOR ACCESSORIES