Welding the reinforcing rib and the reinforcing plate for Air knocker
Knocker Model RKV, Install of Reinforcing Rib
Welding the reinforcing plate
If the plate in the mounting part is thin, weld a reinforcing plate onto it. When welding the reinforcing plate, use all-around welding so that no gap arises between the hopper and the reinforcing plate. Leave one spot unwelded for bleeding the air. If no spot is left unwelded for bleeding the air, the air creates a cushion, dampening the effect of percussion.
The welded part undergoes a significant level of impact in operation. To avoid damage or dropout, ensure as much weld overlay as possible.
For welding rods, use JISD 4301 or equivalent (Shinko Welding Stick B - 10) or more. Also, in the case of SUS, please use more than JIS Z 3221 equivalent (Shinko Welding Rod NC - 38) or more.
Reinforcing plate size（ｍｍ）
| Model | Square type | Round type | Hole diameter | Pitch | |
|---|---|---|---|---|---|
| ΦA | ΦB | C | |||
| RKV/RKD 30PB | □150×t3.2 (3.0) | Φ150×t3.2 (3.0) | 15 | 20 | 52 |
| RKV/RKD 40PB | □200×t3.2 (3.0) | Φ200×t3.2 (3.0) | 80 | ||
| RKV/RKD 60PB | □300×t4.5 (4.0) | Φ300×t4.5 (4.0) | 55 | 90 | |
| RKV/RKD 80PA | □400×t4.5 | Φ400×t4.5 | 25 | 120 | |
| RKV/RKD 100PA | □500×t6.0 | Φ500×t6.0 | 88 | 140 | |
| RKV/RKD 120PA | □600×t9.0 | Φ600×t9.0 | 95 | 30 | 160 |
| Model | Square type | Round type | Hole diameter | Pitch | |
|---|---|---|---|---|---|
| ΦA | ΦB | C | |||
| RKVS 30PA | □150×t3.2 (3.0) | Φ150×t3.2 (3.0) | 15 | 20 | 52 |
| RKVS 40PA | □200×t3.2 (3.0) | Φ200×t3.2 (3.0) | 80 | ||
| RKVS 60PA | □300×t4.5 (4.0) | Φ300×t4.5 (4.0) | 55 | 90 | |
The value in ( ) indicates a value for SUS.
knocker welding RKV
knocker welding RKD
Welding the base assembly and reinforcing rib
Use all-around welding to weld the base assembly and make sure that the bolt holes on the right and left sides are symmetrical.
Cut the reinforcing rib to match the configuration of the part to which it is to be mounted. Use all- around welding to weld it and make sure that the right and left sides are symmetrical.
For RKD60PB or higher models, cut the attached base reinforcement rib in accordance with the shape of the installation part before welding.
The reinforcement rib is usually unnecessary for RKV/RKD30PB and 40PB, but its installation is recommended if further durability is required.
For RKVS60 and RKV60PB or higher models, the reinforcement rib is welded to the base before shipment. Cut the reinforcement rib in accordance with the shape of the installation part before welding.