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Cutting tooth assembly with wear sensing device, roller and coal mining machine

A sensing device and pick technology, which is applied in the field of pick components, drums and shearers, can solve the problem of late intervention time, and achieve the effect of improving operation safety and reducing costs

Pending Publication Date: 2021-08-06
苏州三宛包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, no matter whether it is manual inspection or the monitoring of oil pressure signal changes, it can only realize the periodic wear state detection of picks, and the periodic wear state detection often intervenes late. The focus of wear detection is pick base

Method used

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  • Cutting tooth assembly with wear sensing device, roller and coal mining machine
  • Cutting tooth assembly with wear sensing device, roller and coal mining machine
  • Cutting tooth assembly with wear sensing device, roller and coal mining machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as Figure 1 to Figure 3 As shown, a pick assembly with a wear sensing device includes a pick collar 1 , a pick 2 , an optical fiber sensor 3 and a data acquisition device 4 .

[0048]The pick 2 and the pick collar 1 are fixedly connected by a snap ring 11, and the snap ring 11 fixes the pick 2 and the pick collar 1 on the tooth holder 7 together. Wherein, the pick 2 and the pick collar 1 pass through the first snap ring groove at the tail of the pick base 22 and the second snap ring groove that matches the inner hole of the pick collar 1 at the corresponding position, and the first snap ring groove located in the first snap ring groove. It is fixedly connected with the snap ring 11 in the second snap ring groove, and the snap ring 11 is a piston type snap ring;

[0049] A shaft snap ring is arranged outside the root of the pick collar 1, and the shaft snap ring connects the pick collar 1 and the tooth seat 7 as a whole by cooperating with the end of the pick coll...

Embodiment 2

[0054] On the basis of Embodiment 1, this embodiment may also include the following:

[0055] see Figure 4 As shown, the optical fiber sensor 3 of the present embodiment may include an optical fiber 31 and a sheath 32, and the optical fiber sensor 3 is provided with sensing units in different distances in stages as the measuring point 33, and the sheath 32 is coated with the optical fiber 31 through a microhole fixed-point glue injection process. The synthetic optical fiber sensor 3 can ensure that the measuring points 33 do not affect each other during the wear process. Further, the diameter of the optical fiber 31 is 0.25-0.5 mm, and the outer diameter of the sheath 32 is 2-3 mm. The size of the sheath 32 is mainly to consider that the diameter of the mounting hole 23 of the pick 2 should not be greater than 5 mm, and to ensure that the sheath 32 is in contact with the There is a certain gap between the optical fibers 31, thereby ensuring that the rotation process of the p...

Embodiment 3

[0060] On the basis of the foregoing embodiments, this embodiment may also include the following:

[0061] Such as Figure 5-8 As shown, the optical fiber sensor 3 is communicatively connected with the data acquisition device 4 through the quick connector 62, the data acquisition device 4 transmits an optical signal to the optical fiber sensor 3, and each measuring point 33 of the optical fiber 31 will reflect the optical signal, and the data acquisition device 4 receives The light signals reflected by each measuring point 33 are sent to the monitoring terminal 8 to display the wear state of the pick 2 in real time. Wherein, what is transmitted in the optical fiber sensor 3 is an optical signal, and the transmission is stable and reliable, which can effectively make the pick 2 adapt to the harsh working environment underground. In particular, stable testing can be guaranteed in a water environment; it is not interfered by electromagnetic signals generated during the operation...

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Abstract

The invention relates to a cutting tooth assembly with a wear sensing device, a roller and a coal mining machine. The cutting tooth assembly comprises a cutting tooth lantern ring, cutting teeth, an optical fiber sensor and data acquisition equipment, wherein the cutting teeth are fixedly connected with the cutting tooth lantern ring through a clamping ring; the cutting teeth comprise a tooth head and a cutting tooth base body, the tooth head is installed in a groove in the end surface of the cutting tooth base body, a mounting hole is formed along the central axis of the cutting tooth base body and the tooth head, and the mounting hole penetrates through the cutting tooth base body and extends into the tooth head; the optical fiber sensor is implanted into the mounting hole, and the tail end of the optical fiber sensor and the cutting tooth lantern ring are packaged and fixed; and the data acquisition equipment is in communication connection with the tail end of the optical fiber sensor and sends an acquired wear signal to a monitoring terminal in real time. The wear curve of the tooth head and the cutting tooth base body can be effectively measured in time, real-time tracking of continuous changes of the wear state of the cutting teeth is achieved, the wear performance of the cutting teeth is evaluated, and abnormal damage to the cutting teeth is predicted.

Description

technical field [0001] The invention belongs to the technical field of coal mining machinery, and in particular relates to a pick assembly with a wear sensing device, a drum and a coal shearer. Background technique [0002] At present, with the rapid development of industrialization, all kinds of mines have basically realized mechanized or semi-mechanized mining operations, but what comes with it is the mutual support of corresponding machines and tools and large-scale industrial production. The most important mining tool is comprehensive mechanized shearer equipment. The drum of the shearer equipment is the key device for coal mining; the drum is installed at the end of the swing arm of the shearer, and the drum penetrates into the coal seam to be mined and rotates. The pick on the top is used for coal mining, and the collected coal flows to the output unit through the spiral channel of the drum; the drum is driven to rotate, and the pick is axially stationary relative to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C35/18E21C35/197G01B11/00
CPCE21C35/18E21C35/197G01B11/00
Inventor 魏广庆贾立翔李保卫
Owner 苏州三宛包装科技有限公司
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