Installation of the Coils 线圈的安装

Selecting the Correct Coil Size 选择正确的线圈

When selecting the coil size for conveyor, the actual belt width should be considered. 
当为皮带选择线圈时,需要考虑皮带的的宽度

The actual belt width depends on the nominal width and troughing angle of belt. See Figure 8 and Table 2.

实际皮带的宽度取决于名义上的宽度和皮带凹槽的角度,参见图8和表2.

Example:比如 

Troughed belt, nominal (W N) width 1800 , troughing angle (at) 30 . Actual width

(W A) is in excess of 1600 mm, and thus, coil size 20 is suitable. If coil size 16 is

selected, the sensitivity near the edges of the belt is somewhat impaired.

带凹槽的皮带,名义上的宽度是1800 mm,角度是30度,实际上的宽度超过1600 mm,因此选择20号的线圈就已经够啦. 如果选16号线圈, 皮带边上的灵敏度在某种程度上会消弱.

Installation of the Lower Coil Unit

安装下部线圈

Distance from the belt

到线圈的距离

The lower coil unit is located below the belt. When the belt is fully loaded, allowance should be made for a small clearance between the belt and the coil. The optimal distance from the bottom of unloaded belt is two to three times the sag in the loaded condition, or 25 mm (= one inch), whichever is larger. 
下部的线圈安装在皮带下面,当皮带是满载时, 在皮带和线圈之前需要有一定的间隙, 距离空皮带的底部的距离最好是满载情况下的距离的2到3倍, 或者是25mm, 以更大些的距离为准.

To avoid a reduction in sensitivity, the gap between the upper and lower coil

units should be kept as small as possible.

为了避免降低灵敏度, 上/下层线圈的距离是越小越好

Distance from the idlers 
距离空辊的距离

If there is no special reason to do otherwise, the coil unit shall be located halfway

between the near most rollers.

如果没有特殊的原因,线圈需要安装在两个最近辊子的中间

Positioning the coil unit

线圈的定位

The normal positioning of the coil unit is such that the connector faces to the same

sides.

通常线圈的定位是连接面在同一侧面

Care should be taken to ensure that the coil units are properly phased to each other

when connected. Also the mechanical protection of the connectors should be

considered. 
要注意的是,当连接时,连个线圈需要同步,同样要考虑机械保护

Fixtures for the lower unit

下层线圈的固定

The fixtures should be rigid enough to ensure that the coil unit does not vibrate in relation to the frame.  If the fixtures are made of non-metallic material (wood, plastics, plywood), there are fewer limitations than in a design utilizing metal. Metallic fixtures can be used, but they should be rigid and as simple as possible. One possibility is to construct four steel brackets one for each corner. These brackets should be made of L-shaped profile for rigidity. Adjoining surfaces with conveyor structure should be welded.

安装支架需要牢固,而不能随框架震动而震动, 如果安装支架是非金属的(木头,塑料或胶合板, 则相比金属的支架,相应的限制就少, 金属支架能够使用,但它们需要牢固且越简单越好,一个方案是采用4个钢托架,每个角装一个,为报纸牢固,这些钢支架采用L型,底部和皮带传输的机械框架焊接起来.

It is not allowed to use such constructions that create an electrically conductive

loop.

不能使用能够产生电气感应环的结构件

The bolts used to attach the coil unit to the brackets need not be welded. When

tightening the screws, avoid using too much force, as the plastic construction of the

coil is much weaker than e.g. steel. The use of double nuts is recommended in order

to avoid loosening of screws under vibration.

连接线圈到托架上需要用螺栓,而不要焊接,但锁紧螺栓时,不能用太大的力气, 因为线圈的结构是塑料的,强度比较弱, 需要采用双螺母锁紧,以免在震动时松动.

Protection of the lower coil unit

下层线圈的保护

If lumps of conveyed material drop over the edge of the belt onto the lower coil unit,

damage may occur. To avoid this, install covers of non-metallic material to deflect

misplaced materials. Alternatively, shields may be installed along the edges of the

belt to prevent spillage. These shields should be of non-conductive material.

如果皮带上的物料掉下去到下面的线圈上, 则会导致线圈损坏, 为避免这种情况发生,就需要安装非金属材料的罩来保护, 或者沿着的皮带边上安装保护板,防止矿石的掉落. 这些防护板应该采用非导电的材料.

Installation of the Upper Coil Unit

Distance from the lower coil 距离下层线圈的距离

In order to avoid a reduction on sensitivity, the coil units should be spaced as

closely as possible. The minimum gap depends on the program used (ref. table

3. and section Sensitivity Programming).

为了避免降低灵敏度, 上/下层的线圈距离需要越近越好,最小的距离根据程序设定(参考表3和灵敏度设定程序章节)

The location of the upper coil unit is above the belt. The position in the vertical

direction should be selected so as to ensure that the material carried by the belt does

not damage the coil unit.

上层线圈位于皮带上层, 位于垂直方向, 需要选择不能被皮带输送的物料碰坏的位置

Different ways to protect the upper coil against impacts by the overburden

有几种方法可以来保护上层线圈不被过高物料伤害

The easiest way is to make the gap between the coil units large enough. If the metal

objects to be detected are bigger ones (=high sensitivity is not needed) and the

electrical noise level is low in installation site, this may prove an ideal solution.

最简单的方法就是使上/下层线圈的距离放到最大,如果仅仅检测大金属物件,则不需要高灵敏度, 现场的电气噪音水平低, 这也许是最好的方法

The excess height of material may be eliminated by installing a leveling plough or

other similar structure before the detector. This method may be good for fine

materials.

超高的物料也可以在探测仪之前,安装一个机械犁或类似的结构将超高的物料弄平整, 对比较细的物料比较好.

The system feeding the belt may be timed to terminate the feed before the conveyor

is shut down. This will prevent or decrease the formation of a heap of material on the

belt.

在皮带停止时,要给皮带给料系统互锁也停下来,这个可以避免在皮带上形成一个物料堆

Using the Metcorr swing-away coil mounting set.  Alternatively a similar device can

be manufactured locally. This solution is not recommended for belt speeds in excess

of 2.5 m/s.

采用Metcorr摆动线圈安装装置,这个装置也可以当地制造,此装置在皮带速度超过2.5 m/s情况下使用

Using overburden monitor. For example, install a wire (or strike bar), tilt switch or

the like across the belt before the detector system. The distance should be larger than

the coasting length. The vertical position of the bar should be slightly lower than the

upper coil. Furnish the wire or the bar with a limit switch, which automatically stops

the conveyor. When the conveyor has tripped, the material can be leveled by hand.

This solution is ideal for fast-running belts. The use of the overburden monitor also

eliminates the mechanical stress on the upper coil unit.

在探测仪之前采用过高监视仪, 比如安装一个线(或杆),倾斜开关或其它装置,其高度要稍微低于上层线圈的高度, 且预留足够的长度,当检测到过高的物料,将使皮带停下来, 然后手动弄平.

The use of the overburden monitor offers certain advantages over the swing-away

coil mounting set. It, if hit, cause the belt not to stop. (In the case of the swing-away

coil mounting set, the magnetic environment of the coils changes drastically and an

alarm is generated, although there may be no tramp metal.) With the use of the

overburden monitor, the leveled material goes through the metal detector somewhat

later. Therefore, there is no need to check whether the material to be leveled contains

tramp metal or not.

采用这种方法,可以降低误报,当过高的物料碰到摆动机械装置,皮带输送没有停止,但探测线圈的电磁环境发生了变化, 探测仪给出报警, 而这里面又没有金属,操作人员还是要对这堆材料进行检查. 但如果采用过高监视之后,就不会有以上的误报及额外的检查发生.

The above mentioned ways may also be used in combination with one another.

以上的几种方法也可以混合使用.

Positioning the coil unit

线圈定位

The upper coil is mounted directly above the lower coil, and aligned mutually

parallel, as if the coils were the bottom and the cover of a rectangular box.

Follow the guidelines in section Connection and Phasing of the Coil Elements,

which advises how to ensure the correct phasing of the coils.

上层线圈安装在下层线圈的上方,保持平行, 如果线圈覆盖一个长方行盒子, 根据连接和线圈相位同步的章节上的指导, 上面有如何确保两个线圈的同步

Fixed mounting of the upper coil unit

固定上层线圈

The fixtures should be rigid enough to ensure that the coil unit does not vibrate in

relation to the frame.

固定支架需有足够的强度,确保线圈不会随框架震动而震动

If the fixtures are made of non-metallic material (wood, plastics, plywood), there are

fewer constraints than in a design utilizing metal. Metallic fixtures can be used, but

they should be rigid and as simple as possible. One possibility is to construct four

protracting steel brackets, one for each corner. These brackets should be made of L-

shaped profile for rigidity. Adjoining surfaces should be welded.

It is not advisable to use any construction, that creates an electrically

conductive loop.

安装支架需要牢固,而不能随框架震动而震动, 如果安装支架是非金属的(木头,塑料或胶合板, 则相比金属的支架,相应的限制就少, 金属支架能够使用,但它们需要牢固且越简单越好,一个方案是采用4个钢托架,每个角装一个,为报纸牢固,这些钢支架采用L型,底部和皮带传输的机械框架焊接起来.

不能使用能够产生电气感应环的结构件

The bolts used to attach the coil unit to the brackets need not be welded. When

tightening the screws, avoid using too much force, as the plastic construction of coil

is much weaker than e.g. steel. The use of double nuts is recommended in order to

avoid loosening of screws under vibration.

连接线圈到托架上需要用螺栓,而不要焊接,但锁紧螺栓时,不能用太大的力气, 因为线圈的结构是塑料的,强度比较弱, 需要采用双螺母锁紧,以免在震动时松动.

Installation of the Upper Coil Unit with Optional Coil Mounting Set (CMS)

安装线圈安装组件(CMS可选件)

See the assembly drawing and the parts list on page 39 when installing CMS and

follow the instructions as below.

参看39页的装配图,参照如下的安装说明

1.   Mount the bar fastener plates (part 3) to fiberglass tubes (6) with U-shape clamps 9/8mm (10). 
用U形夹9/8mm (10)安装锁紧盘(part 3)到玻璃纤维管(6)

2.   Fix the vertical fiberglass tubes (6) to conveyor frame using U-shape fasteners (5) and tube clamps (11). 
用U型卡(5)和管夹(11)将玻璃纤维管(6)垂直的安装到皮带输送框架上

   400 mm minimum distance between mounting points in tube (6) Mounting holes for fasteners (5) in drawing 
在玻璃纤维管(6)安装孔(在图上用于固定(5))之间要有至少400 mm距离,

3.   Install the support bar (7) to fastener plates (3) and limit the vertical movement with U-shape clamps 35/8 mm (9). 
安装支架(7), 锁紧盘(3)和用U型夹35/8 mm (9)限制垂直方向上的移动

4.   Fix the upper coil brackets (1) to the support bar (7) with U-shape clamps 35/8 (9). Cable outlet of coil element towards fiberglass tubes.

用U型夹35/8 mm (9)固定上层线圈托盘(1)到支架(7)上, 线圈电缆的出口方向朝玻璃纤维管

5.   Fix the upper coil to brackets (1) with screw M10x50 (17) and nut M10 (18).

用螺杆M10x50 (17) 和螺母 nut M10 (18)固定托架(1)

6.   Fix the impact bar (2) to brackets with support plates (4) spring washer M6 (14) and screw M6x25 (13). 
用弹簧垫片M6 (14)和螺母M6x25 (13)安装碰撞杆(2)到带支架(4)上

7.   Place the vertical position of the upper coil to the center of the conveyor belt and the horizontal position to the same direction with the conveyor belt and minimum distance from the belt.

在传输皮带的中心的垂直方向上,与皮带输送方向的平行方向上安装上层线圈,距离皮带的距离尽可能的小

8.   Tighten all screws and nuts and cut the extra length of impact and support bars.

将所有的螺母锁紧,并将多余的撞杆和支撑杆切掉

9.   Mount the lower coil to the conveyor frame (see section Installation of the Lower Coil Unit).

安装下层线圈,参考上面的说明

10. The cable connection box (junction box) can be fixed to the bar fastener plate (3).

    线圈的中间接线盒安装在固定盘上(3)面

总体装配图零部件的清单

Item	DESCRIPTION描述	QTY数量
1	Pair of coil brackets线圈盘套	1 set
2	Impact bar撞杆	1 pc
3	Impact bar support plate撞杆支架	1 pc
4A	Coil support bar plate (small)线圈支架(小)	1 pc
4B	Coil/Juntion box support plate (large) 线圈支架(大)	1 pc
5	U-shaped clamps, large   U型夹,大	8 pcs
6	Fiberglass tubes 90mm (3 ½”)好玻璃纤维管	2x2m
7	Coil support bar 线圈支架杆	1 pc
8	U-shaped clamps, small U型夹,小	4 pcs
9	Screws M6x25 螺杆	2 pcs
10	Spring washers M6弹簧垫	2 pcs
11	Screws M10x50螺杆	8 pcs
12	Locking nuts M10锁紧螺母	8 pcs
13	Flat washers M10平垫	8 pcs

7.CONNECTION  INSTRUCTIONS 连接指导

All the external connections are in the terminal block on the MBU-board inside the

cabinet (see Figure 10).

所有的控制柜内MBU板的外部连接参考图10

Protective ground is an exception.  It is located on the wall of the enclosure.

保护接例外, 它位于墙壁上的附件里