CN1083973C - Method and device for testing wear of conveyer chain - Google Patents

Abstract

The present invention relates to a method and a device for testing the abrasion of a conveyer chain. The length of each chain link shape position of a conveyer power chain in running is measured for the first time by infrared beam, and the number of the length is stored into a computer by a controller and data storage. After a time period, the length is measured again, then is measured for many times, and is numbered to be stored in the computer. When the difference of a remeasured value or a repetition measured value of some chain link and a primary measured value exceeds a setting value, a spray gun is controlled by the controller to mark, and the controller can control the spray gun to stop to be overhauled. The present invention has substantive characteristics and obvious effect. The present invention has low cost, and the price is only about 1/10 of the similar products abroad. The present invention has compact structure, and is suitable for Chinese national conditions. On one assembly line, the benefit of hundreds of thousands of yuan can be generated.

Description

The method that wear of conveyer chain detects

What the present invention relates to is a kind of method of detection, and the method that especially a kind of wear of conveyer chain detects belongs to meters method of testing and device field.

On the manufacturing of modern large-scale corporation and the assembling automatic production line, the carrier chain of robotization all is housed, Railway Car Plant particularly, robotization conveyor power transmission chain is one of key that guarantees ordinary production, but power transmission chain in actual motion because two main causes, the first, the power transmission chain long-time running makes the wearing and tearing of the stress point and the face of chain link; Difference and the defective of second power transmission chain on material and manufacturing process caused more dynamofluidal zip length elongations, and the total tension force of power transmission chain is loose excessively, so that make the power transmission chain travelling speed inhomogeneous, influences operation, and serious also can chain rupture accident.By retrieval to document, find that more existing countries take corresponding measure to carry out repair and maintenance around the power transmission chain wear problem, as Japanese patent application No. is that JP85285711 (JP62145105A) and JP7776323 (JP54010760) utilize optoelectronic switch or sensor to detect the chain link of heavy wear on the conveyor, its main method is that the time increment that utilizes photoelectric sensor to detect by the chain sheet indicates wear condition, also has some countries to utilize laser sensor and fiber optic sensor or light curtain sensor to detect the link wear situation.All there is deficiency in these prior aries, as above-mentioned Japanese patent application, because the light that utilizes photoelectric sensor when the chain sheet detected indicates wearing and tearing by the time increment of chain link, promptly come the length of the actual chain link of comparison with the chain link of standard, also promptly to the higher requirement that is processed with of chain link medium chain sheet or correlated parts, particularly to the requirement of its length, having relatively high expectations to these parts and power transmission chain principal direction perpendicular end surface in other words, this has proposed very high requirement for China's conveyor power transmission chain manufacturing and use, is difficult at present accomplish; Some external laser sensors and light curtain sensor also must add the equipment with costliness, and this generally utilizes with regard to present circumstances for China and also is limited to China's national situation and condition is difficult to carry out; The fiber optic sensor beam diameter can't satisfy the requirement of fine beam measuring accuracy in the detection.Expensive measuring equipment can not have good application scenario in China because of condition and national conditions in the prior art in a word.

The objective of the invention is to overcome deficiency of the prior art, propose a kind of method of testing, satisfied the requirement that power transmission chain is detected.

Technical scheme of the present invention mainly is the method aspect that detects; the infrared beam more than 12 meters that promptly utilizes infrared sensor to send is limited in and transmits and receives bore 1 millimeter of diameter; 50 millimeters of relative distance stuck-at-s; energy is 1/81 joule a scope; measured length to each chain link shaped position of operating hauler power riding chain is numbered and is stored in computing machine by controller and data-carrier store; survey again after the time period; several times repetition measurement again later on; and all be stored in computing machine; when a certain chain link survey again or the repetition measurement value with after the difference of measured value surpasses a value of setting for the first time; by controller control spray gun for paint marking; and the may command shutdown is overhauled this chain link; check point is located before being selected in the feed drive station, to eliminate that discontinuity in service causes and other errors.Before the conveyor driving station, locate, both sides at the power transmission chain traffic direction are provided with measurement bay, both sides in the same plane motion direction of power transmission chain, some groups of infrared sensors are set respectively, every group of infrared sensor is individually fixed in both sides and has on the support of cursor chi, the support of both sides is individually fixed on the measurement bay of both sides, adorn photoelectric regulator on the infrared sensor respectively, it is 1 millimeter that photoelectric regulator makes the beam diameter of infrared sensor output, operating distance is 150 millimeters, energy is 1/81 joule, the line of infrared sensor connects with control box, the line of control box directly connects with computing machine by data-carrier store, and the second road line of control box is connected with pneumatic spray gun device; The Third Road line of control box links to each other with the stopping signal that power transmission chain drives.Its test process is: have infrared sensor on the cursor chi support and send two or more the infrared beam of handling through photoelectric regulator; its light beam is vertical with the power transmission chain traffic direction; can survey the relative position size of opening grade size and chain link of each chain link; through instantaneous actual measurement to each chain link; via controller and data-carrier store number respectively be stored in computing machine through a time period after; survey again and later several times repetition measurement; to survey again with repetition measurement value and measured value for the first time and compare; differentiate; after its difference surpasses a certain setting value; send signal by control box; control the head that sprays paint this pitch chain joint is made mark; and set the place and shut down, so that maintenance.

The present invention has substantial characteristics and significant effect, and at first for to avoid the import of same category of device to save a large amount of foreign exchanges, the existing cost that drops into only is 1/10～1/5 of import same category of device; The second, lower to the requirement of dynamofluidal detection reference, what the present invention required is the variation of grasping each chain link physical size, i.e. the wear extent that produces because of operation; The 3rd, utilize the present invention only on the conveyor power transmission chain of a transfer matic, can produce the benefit of hundreds of thousands yuan.The present invention is suitable for the China's national situation new technology, has very big using value.

Below with reference to accompanying drawing the present invention is further described:

Fig. 1 detection mode schematic block diagram of the present invention

Fig. 2 apparatus of the present invention structure and wiring connect synoptic diagram

As shown in Figure 1; the present invention is aspect detection method; promptly utilize infrared beam to be limited in and transmit and receive bore 1 millimeter of diameter; 50 millimeters of relative distance stuck-at-s; energy is 1/81 joule a scope; computing machine is numbered and deposited in to the measured length first time to dynamofluidal each the chain link shaped position of operating conveyor by controller and data-carrier store; survey again after the time period; the later repetition measurement of several times again; and all number the storage computation machine, when a certain chain link survey again or the repetition measurement value with after the difference of measured value surpasses a value of setting for the first time, by controller control spray gun for paint marking; and the may command shutdown, this chain link is overhauled.Check point is located before being selected in the conveyor driving station, to eliminate that discontinuity in service causes and other errors.

As shown in Figure 2, utilize invention aspect pick-up unit, attached with inexpensive, simple for structure, a covering device that is fit to China's national situation, mainly by measurement bay 1, the support 2 that has the cursor chi, infrared sensor 3, controller 4, data-carrier store 5, computing machine 6 constitutes, before the conveyor driving station, locate, in the both sides of power transmission chain traffic direction measurement bay 1 is set, in principal direction both sides, the same plane of power transmission chain, some groups of infrared sensors 3 also are set respectively, every group of infrared sensor 3 is individually fixed in both sides and has on the support 2 of cursor chi, the support 2 of both sides is individually fixed on the measurement bay 1 of both sides, the line of infrared sensor 3 connects with control box 4, and the first via line of control box 4 further connects with computing machine 6 by data-carrier store 5; The second road line of control box 4 connects with pneumatic spray gun device 7; The Third Road line of control box 4 connects with stopping signal 8.Also be provided with photoelectric regulator in the infrared sensor 3.

Claims (3)

1, a kind of method of wear of conveyer chain detection; it is characterized in that utilizing infrared beam that computing machine is numbered and deposited in to the measured value first time of dynamofluidal each the chain link shaped position of conveyor in service by controller and data-carrier store; survey again after the time period; the later repetition measurement of several times again; and all number the storage computation machine; when a certain chain link survey again or the repetition measurement value with after the difference of measured value surpasses a setting value for the first time; by controller control spray gun for paint marking; and the may command shutdown, overhaul.

2, the method that detects of this wear of conveyer chain as claimed in claim 1, its feature are also that the infrared beam that is utilized is limited in and transmit and receive bore 1 millimeter of diameter that 50 millimeters of relative distance stuck-at-s, energy are 1/81 joule.

3, the method for this wear of conveyer chain detection as claimed in claim 1, its feature are that also check point is selected in the conveyor driving station and locates before.

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