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Method and apparatus of protecting road surface milling-planing machine at roadblock

A protection device and a technology of a milling machine are applied in the protection field of a road milling machine encountering metal obstacles, which can solve the problems of affecting the milling and power mechanism, delaying the construction period, breaking tools, etc., so as to speed up the construction period, Avoid downtime and improve efficiency

Inactive Publication Date: 2005-01-12
ZOOMLION HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the milling operation, due to the complexity and frequency of the operation of the machine itself, the operator is often busy with other operations, so that the rotating milling drum cutter head hits these hard metal objects, and at least dozens of cutter heads are broken. It can cause a loss of 20,000 to 30,000 yuan and delay the construction period, and accidents of breaking tools often occur in construction operations. Based on the current average of 10 tool replacements per year, it will cause economic losses of 200,000 to 300,000 yuan; In severe cases, it will affect the milling and power mechanism, which is especially obvious in domestic municipal road construction

Method used

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  • Method and apparatus of protecting road surface milling-planing machine at roadblock
  • Method and apparatus of protecting road surface milling-planing machine at roadblock
  • Method and apparatus of protecting road surface milling-planing machine at roadblock

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Experimental program
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Effect test

Embodiment 1

[0020] Such as figure 1 As shown, the present invention includes a milling frame 1, a milling drum 8, a front traveling wheel 5, a rear traveling wheel 12, a discharge mechanism 7 and a conveyer belt 4, and the milling drum 8 is installed on the frame 1 and is located at Below the frame 1, there is a milling cutter head 9 that can rotate around the periphery, which is controlled by the milling drum driving mechanism. Frame 1, discharge mechanism 7 is located at the front position of milling drum 8, and the material after milling cutter head 9 milling can be discharged by this mechanism, and is transported on the conveyer belt 4 that is positioned at frame 1 front. The present embodiment is characterized in that on the frame 1, a front metal detector 3 is set at the position in front of the milling drum 8, and a rear metal detector 10 is set at the position behind the milling drum 8. The two detectors are connected with the frame 1. connected to the control device 2 composed o...

Embodiment 2

[0036] Such as Figure 5 As shown, the embodiment of the present invention is basically the same as Embodiment 1, except that it is only on the frame 1 and is positioned at the position in front of the milling drum 8 to establish a front metal detector 3, and this detector is also located at the frame 1 The control device 2 above and composed of control circuit connections is connected. On the frame 1, two lifting cylinders 6, 11 are respectively fixed, wherein the piston rod of the lifting cylinder 6 joins with the front traveling wheel 5, and the piston rod of the lifting cylinder 11 joins with the rear traveling wheel 12. After the metal obstacle is detected by the front metal detector 3, a signal is sent to the control device 2, and the control device 2 issues an instruction to make the lifting cylinder 6 or 11 act, so that the milling drum 8 is lifted; and the milling drum 8 is lowered It is realized by the delayable time relay K2 set on the control device 2. When the mi...

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Abstract

The obstacle-meeting protection method for road surface milling-planing machine is characterized by that on the milling-planing machine frame the front of milling-planing drum is equipped with metal detector or the front and the back of the milling-planing drum are equipped with metal detector, the signal detected by said detector can be transferred into the control device, the control device can give out signal to utilize the lifting mechanism to drive milling-planing drum and make it lift upward or fall down ward. Said equipment includes machine frame, milling-planing drum, walking wheel, material-discharging mechanism and conveying belt, the metal detector is connected with control device formed from control circuit, and on the machine frame is fixed a lifting oil cylinder for driving milling-planing drum and making it upwards and downward move.

Description

Technical field: [0001] The invention relates to the field of construction, in particular to a method and a device for protecting a road milling machine from encountering a metal obstacle when milling an asphalt concrete road during road construction. Background technique: [0002] The road surface cold milling machine relies on the high-speed rotating milling drum cutter head to realize the functions of grooving, trenching, roughening of cement road surface, and cutting of damaged asphalt road surface while advancing. The milling width ranges from 350 to 20,000mm, the milling depth ranges from 40 to 300mm, and the number of cutter heads distributed on the milling drum reaches as many as 160. [0003] At present, all road surface cold milling machines at home and abroad ignore the influence of metal foreign objects buried in the milling layer on the milling cutter. For metal objects exposed to the ground, such as manhole covers, reinforced concrete blocks, etc., it is all ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C23/088
Inventor 尹苟保陈宇峰喻钢
Owner ZOOMLION HEAVY IND CO LTD