JPS6116269Y2 - - Google Patents

Description

[Detailed description of the invention] The continuous unloader referred to here is a type of bucket elevator and is constructed as follows. That is, the end of the descending part of the bucket trine passes through the wheel at the end of the overhanging arm, and from there the bucket trine enters a catenary-like sag, scoops up the bulk cargo at the sag, and then enters the rising part. , which is equipped with a hopper at the top of the line to receive cargo. This device is often used when unloading bulk cargo from bulk ships. The present invention relates to a tensioning device for the lowering part of the bucket trine in the above-mentioned device. The general explanation of the above-mentioned continuous unloader will be supplemented with reference to FIG. 1 below.

In the figure, 12 is a trolley running along the quay;
12b is a horizontal boom on the post 12a, and 7 is a wheel box that is a holder for the wheels 2, 3, 4 of the bucket trine 1 hanging from the tip of the pool 12b and its drive device. Also serves as 6 is an overhanging arm whose base is fixed to the wheel box 7, and a bucket trine wheel 5 is attached to the tip of the arm.
have. 13 is a ship, 14 is a bulk cargo loaded with the same, and 8, 9, 10, and 11 are devices for transferring and loading cargo from the wheel box 7. Here, the bucket trine 1 has wheels 2, the arrangement of which is shown in FIG.
3 and 4, the bucket trine is driven and rotated for unloading, and the empty bucket trine is moved to the descending section 1.
1a and reaches the wheel 5 at the tip of the overhanging arm 6, which then becomes a catenary-shaped hanging part 1b (hereinafter referred to as catenary part 1b), which scoops up the bulk cargo, and the loaded bucket trine rises vertically. 1c, and reaches the wheel box 7.

In the drive configuration of the bucket trine 1 as described above, the descending portion 1a has a large amount of slack due to the bucket trine's own weight, as shown in 1a', which often causes problems such as sagging, which often impairs the stable operation of the bucket trine 1. Therefore, in the present invention, it was decided to apply a light torque to the wheel 5 of the overhanging arm using a torque motor. A torque motor has the property that if a torque exceeding its rated torque is applied, it will continue to resist the torque without rotating in the forward direction, so if a torque motor with an appropriate rating is selected, the bucket trine lowering section 1a can be attached to it. Appropriate slack removal can be performed to the extent that no damage occurs.

Since the torque required to take up the slack mentioned above is small, it is sufficient to attach a small and small capacity deceleration torque motor to the tip of the overhanging arm 6 or to the base using a chain drive and connect it to the wheel 5, which reduces the weight of the device in particular. It is possible to ensure stable operation of the bucket trine without any problems.

[Brief explanation of the drawing]

FIG. 1 is a side view of a continuous unloader during unloading of bulk cargo from a ship, and FIG. 2 is a plan view of a wheel box showing the arrangement of the drive wheels of the bucket trine. 1...Bucket trine, 1a...Bucket trine lowering part, 1b...Bucket trine catenary part, 1c...Bucket trine vertical rising part, 2,
3, 4... Wheel, 5... Wheel at the end of the overhanging arm, 6... Overhanging arm, 7... Wheel box, 8,
9, 10, 11...Cargo transfer and loading device, 12
...Truck, 12a...Post, 12b...Boom, 13...Ship, 14...Bulk cargo.

Claims (1)

[Scope of utility model registration request] The bucket trine 1 passes the end of its descending section 1a over the wheel 5 at the tip of the overhanging arm 6, and then passes through the catenary section 1b to the vertically rising section 1c,
In a continuous unloader in which the catenary section 1b serves as a bulk cargo scooping section, a torque motor is connected to the wheel 5 at the end of the overhanging arm to take up slack in the bucket trine descending section 1a.