9.3　Drive Unit

Ⅰ　Major Items

9.3.1　Installation of drive unit of common reducer shall meet the requirements of design technical documents and current national standard GB 50231 General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering.

Quantity checked:All.

Checking method:Check by percent meter，clearance gauge，steel ruler，tinting and lead extrusion.

9.3.2　Installation of flexible drive unit shall be in accordance with the following requirements:

1　Grind and assembly of keys shall meet the requirements of design technical documents when rack wheel connect with head pulley axis of traveling grate equipment by keys.

2　Fastening force or moment of bolts in tension rings shall meet the requirements of design technical documents when rack wheel connect with head pulley axis of traveling grate equipment by tension rings（without keys）.

3　Reserved gaps between end faces of spherical bearings and adjustments to compression amounts of springs in plane bars shall meet the requirements of design technical documents in installation of connecting bars and horizontal bars.

4　For flexible drive unit assembled by several tension rings，tension rings，rack wheel axis hole and head pulley axis shall be degreased before the installation of tension rings.

Quantity checked:All.

Checking method:Check by observation.Check installation quality records.

Ⅱ　General Item

9.3.3　Allowable deviation of flexible drive unit installation shall be in accordance with those specified in Table 9.3.3.Refer to Figure 9.3.3.

Quantity checked:All.

Checking method:Referto Table 9.3.3.

Table 9.9.3　Allowable deviation of flexible drive unit installation（mm）

Figure 9.3.3　Flexible drive unit

1-Rack wheel；2-torsion bar