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Chain length measuring instrument

A length measuring instrument and chain technology, which is applied in the direction of metal chains, instruments, measuring devices, etc., can solve the problems of complex mechanisms, affecting measurement accuracy, and low efficiency, and achieve the effects of accurate and reliable control, high measurement accuracy, and convenient reading

Inactive Publication Date: 2009-12-09
GOTECH TESTING MACHINES DONGGUAN
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] The chain is a key part in the sprocket chain transmission, and the chain length is a key parameter. If the error of the chain length exceeds the standard, it will affect the transmission accuracy, efficiency and the service life of the sprocket chain
The existing chain length measuring instrument includes a chain tensioning mechanism and a length measuring mechanism. First, the chain is pre-tensioned to tension the chain, and then the length of the chain containing X chain links specified in the standard is measured. The chain tension is The tightening mechanism adopts a hydraulic mechanism. Since it is a hydraulic mechanism, pumps, valves, boxes, cylinders, pipes, meters, joints, etc. are indispensable in the system. The mechanism is complicated and bulky. The tension force applied is converted from the pressure displayed by the hydraulic gauge. It is inconvenient and inaccurate, and the length of the chain is measured by manually moving the measuring head, which has low efficiency and affects the measurement accuracy

Method used

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Embodiment Construction

[0014] The present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0015] see Figure 1 to Figure 5 , a chain length measuring instrument, including a frame and a chain tensioning mechanism, also includes a chain length measuring mechanism, which includes a sensing head 3, a left photoelectric sensor 12, a right photoelectric sensor 4, and a left positioning pin 111 , right positioning pin 151, encoder 10, and motor 1, lead screw A4, linear guide rail A9 installed on the frame, the two ends of lead screw A4 are respectively connected with the output shaft of motor 1 and the input shaft of encoder 10, and the wire The screw nut on the rod A4 is connected with the sensor head 3, and the motor 1 can drive the screw A4 to rotate and drive the sensor head 3 to move linearly on the linear guide rail A9, and the left photoelectric sensor 12 and the right photoelectric sensor 14 are placed on the machine table 22 and adjacent to th...

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Abstract

The invention relates to a chain length measuring instrument, comprising a chain tension mechanism and a chain length measuring mechanism. The chain tension mechanism comprises a servo motor, wherein the servo motor drives a lead screw B to rotate to drive a movable gripper seat to move on a liner guide rail B and a liner guide rail C straight so as to tension the chain. The chain length measuring mechanism comprises a sensing head and an encoder, wherein the motor drives a lead screw A to rotate to drive a sensing head to move on a liner guide rail A straight so as to measure the chain length. The invention has the advantages that the tension force can be preset by a control panel, and the servo motor tensions the chain, therefore, the control is accurate and reliable. The motor drives the sensing head to measure the chain length, the encoder counts the number and transfers the number to the control panel so as to automatically display the chain length. Therefore, the invention has the advantages of high accuracy, default control and automatic data display, convenient reading, high efficiency, and the like.

Description

technical field [0001] The chain length measuring instrument of the invention relates to a measuring instrument for chain length. Background technique [0002] The chain is a key part in the sprocket chain transmission, and the chain length is a key parameter. If the error of the chain length exceeds the standard, it will affect the transmission accuracy, efficiency and the service life of the sprocket chain. The existing chain length measuring instrument includes a chain tensioning mechanism and a length measuring mechanism. First, the chain is pre-tensioned to tension the chain, and then the length of the chain containing X chain links specified in the standard is measured. The chain tension is The tightening mechanism adopts a hydraulic mechanism. Since it is a hydraulic mechanism, pumps, valves, boxes, cylinders, pipes, meters, joints, etc. are indispensable in the system. The mechanism is complicated and bulky. The tension force applied is converted from the pressure di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/02
CPCB21L15/005
Inventor 陈景长陈明志
Owner GOTECH TESTING MACHINES DONGGUAN
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