Electric winch is used for operations such as winching and towing heavy things, erecting equipment, piles driving, and coldly pulling reinforcing steel bar in such industries as constructions, metallurgy, mines, weight lifting. The working surroundings to which the electric winch is applicable are: temperature -10℃～+40℃ ( when surrounding temperature is below 00C, before start-up, lubricating oil should be heated up), humidity ≤85%，altitude below 1000 m, no fire and explosion accident and so on. Working grades of winch in use are M4 or M5; when increasing every grade working grade, its rated pull should correspondingly reduce 20%. After you purchase the electric winch, a big problem is how to install electric winch and test electric winch. Don’t worry, now I teach you to install electric winch crane manufacturer.
Notice on how to install a winch
When installing, dismantling and moving the electric winch, it is necessary to keep stable and being not overly oblique without any clashes and fierce vibration.
Electric winch installation and winch testing
Electric winch installation should be completed by professionals. The ground for installing the winch should be leveled off and much solid. The connection between winch and base should be reliable.
- 1 When mobile using, fix the winch to timber sleepers block, and reliably and tightly connect timber block and chassis to ground anchor with steel wire rope. Be aware of avoiding any looseness.（See Figure 1）
Figure 1 Horizontal ground anchor
Concrete measurements for installation need to refer to such conditions as soil quality, soil specific gravity and earth stamina, and are determined by ground anchor standard pictures appropriate to local use.
- 2 When using in a fixed place, make concrete groundwork, and find the horizontal lines by using a gradienter, and leave in advance a square-type hole with a section of 20 x 20(cm²) （See Figure 2）.The number of hole is decided by foundation bolt of the winch (see Figure 2).At first, fixing the foundation bolt, then inject concrete into holes; after ossifying, tightening the nuts evenly. If there are rooms between chassis and lower interface, add adjusting mat so as to prevent partly deforming of chassis. The depth of foundation hole should be determined according to local geological condition and type of electric winch.
Figure 2 Layout Figure of concrete foundation bolt
- 3 The running direction of steel wire rope of the electric winch usually is horizontal; the direction of running rope is in accordance with actual situation, from the underside of reeling drum or other directions. The deviation angle α value of horizontal reeling and extending of steel wire rope must in conformity with stipulations in Table 1. L value should normally equal 20 times Bt width of reeling drum, but ensuring α value to be in line with Table 1, and the location of guiding pulley (see Table 2)to be on vertical bisector (see Figure 3). The ratio of pitch diameter of all pulleys and diameter of steel wire rope should be less than stipulations in Table 2.
- 4 The electric winch working in the air should be sheltered by a rainproof canopy, which can’t obstruct operators’ eyesight and operators should be able to see the commanders and dragging objects.
- 5 Metal shells of structure and electrical devices of the electric winch should be evenly connected to the earth. Earth connecting resistance should not more than 4 Ω. Choosing and installing of earth connecting devices should conform to stipulations of GB/T 232.
- 6 When used for lifting heavy things, the electric winch should be fixed with ascending overtravel limit switch.
- 7 Notch panel type pulley is prohibited from using when choosing guiding pulley.
- 8 The safety circling number of steel wire rope on reeling drum shouldn’t be less than 3 circles. The end of steel wire rope should be reliably fixed. In order to ensure safety the distance from outside layer of steel wire rope to outside edge of side board of reeling drum should not be less than steel wire rope’s diameter.
- 9 The connection area between brake block and brake wheel shouldn’t be less than 80% of the total area. When loosening braking, the brake block must be completely separated from braking, and maintain certain clearance. The value of clearance are 1～2.5 mm between brake strap and brake wheel, 0.25～1 mm between brake block and brake wheel.
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