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Hydraulic type belt pulley automatic tensioning device

A technology of automatic tensioning device and pulley, which is applied in the direction of fluid pressure actuating device, transmission device, belt/chain/gear, etc., can solve the problems of inability to realize self-adaptive tensioning, and achieve reasonable design, wide application range and automation high degree of effect

Inactive Publication Date: 2015-03-25
XIAN ZHONGZHI HUIZE PHOTOELECTRIC TECH
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  • Abstract
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Problems solved by technology

At present, tensioning devices widely used in reality include hammer type tensioning devices, fixed tensioning devic

Method used

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  • Hydraulic type belt pulley automatic tensioning device

Examples

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Example Embodiment

[0019] Such as figure 1 A hydraulic belt pulley automatic tensioning device shown includes a hydraulic cylinder 12 for adjusting the position of the pulley 10 so that the belt 9 reaches a proper tension position and a hydraulic pump 2 for providing high pressure hydraulic oil to the hydraulic cylinder 12 , It also includes a pressure relay 4, an accumulator 5 for replenishing oil for the hydraulic pipeline and maintaining a stable pressure in the hydraulic pipeline, and a device arranged at the outlet of the hydraulic pump 2 to control the maximum tension of the belt 9 Overflow valve 14; the oil outlet of the hydraulic pump 2 is respectively connected with the first working port of the electro-hydraulic servo valve 6 and the first working port of the electromagnetic reversing valve 13, and the second working port of the electro-hydraulic servo valve 6 And the second working port of the electromagnetic reversing valve 13 are in communication with the rod cavity of the hydraulic ...

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Abstract

The invention discloses a hydraulic type belt pulley automatic tensioning device which comprises a pressure relay, an energy accumulator and an overflow valve. An oil outlet of a hydraulic pump is communicated with a first work port of an electro-hydraulic servo valve and a first work port of an electromagnetic directional valve. A second work port of the electro-hydraulic servo valve and a second work port of the electromagnetic directional valve are both communicated with a rod cavity of a hydraulic cylinder. A rodless cavity of the hydraulic cylinder is communicated with a third work port of the electromagnetic directional valve. The end of a piston rod of the hydraulic cylinder is connected with an adjusting belt pulley. A tensional force sensor used for detecting the tensional force of a belt is arranged on the lower side of the belt between the adjusting belt pulley and a fixed belt pulley. A pulling force sensor is arranged between the end of the piston rod of the hydraulic cylinder and the adjusting belt pulley. The hydraulic type belt pulley automatic tensioning device has the advantages of being high in automation degree, capable of achieving self-adaptive tensioning, reasonable in design, high in adaptability, stability and intelligent degree, long in service life and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of hydraulic drive and relates to an automatic tensioning device, in particular to a hydraulic automatic tensioning device for pulleys. Background technique [0002] With the development of my country's mining and metal smelting industries, belt conveyors continue to develop in the direction of high speed, long distance, large capacity and high power. The dynamic characteristics of belt conveyor systems are increasingly prominent. The requirements for pulley tensioners are getting higher and higher. The tensioning device should automatically respond quickly according to the different operating states of the conveyor belt to overcome the hysteresis of the conveyor belt, thereby effectively ensuring the normal operation of the belt conveyor. At present, tensioning devices widely used in reality include hammer type tensioning devices, fixed tensioning devices and hydraulic tensioning devices, etc., but none of ...

Claims

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Application Information

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IPC IPC(8): F16H7/08F15B1/02
CPCF16H7/08F15B1/02F15B11/08F15B13/044F15B13/16F16H2007/0812F16H2007/0887
Inventor 侯鹏
Owner XIAN ZHONGZHI HUIZE PHOTOELECTRIC TECH
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