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Fastening Tool Operational Specifications

Fastening Tool Operational specifications

Bolt fastening operation specification

I. Overview In order to ensure the quality of assembly under the premise, in order to further improve the assembly efficiency, standard high-strength bolts fastening method, specially prepared this specification.

Second, the scope of application of this specification applies to all series of unit bolts fastening.

Third, the operating instructions

1. Common connection 1.1 The main frame, nacelle frame, nacelle cover and other structural parts between the bolts of the fastening is divided into ordinary connection level. 1.2 before the installation of the bolt group to check to ensure that the appearance of intact, anti-corrosion layer without shedding. 1.3 Apply thread lubricant. 1.4 Use a manual torque wrench, hydraulic wrench and other tools (refer to the use of tools specifications) fasten the ordinary part of the bolt once hit the specified torque value. 1.5 After the bolts are tightened, make a mark on the bolt head.

2. Important connection 2.1 The pitch system, yaw system, part of the main drive system and other parts of the connection bolts between the fastening is divided into important connection level .2.2 before the installation of the bolt group to ensure that the appearance of intact, anti-corrosion layer off The 2.3 Apply thread lubricant. 2.4 Use the manual torque wrench, hydraulic wrench and other tools (refer to the use of tools specifications), the connection part of the bolt cross, step by step fastening.

2.4.1 bolt group was used in the form of circular distribution, step by step fastening, generally three times fastening, the first use of the specified torque of 30%, the second 60%, the third 100%. 2.4.2 bolt group rectangular or irregular distribution of the use of diagonal or sequential multi-step fastening, generally divided into three fastening, fastening with 2.4.1.2.5 bolts after the completion of the bolt in the head to do A mark.

3. Key connection 3.1 The tightening of the connecting bolts between the gearbox locking disc, expansion sleeve, coupling and other parts is divided into key connection grade. 3.2 before the installation of the bolt group to check to ensure that the appearance of intact, anti-corrosion layer without shedding.3.3 smear threaded lubricant. 3.4 Use the hand torque wrench, hydraulic wrench and other tools (refer to the use of tools specifications), the connection part of the bolt diagonal, step by step fastening. 3.4.1 Tightening bolts are fastened in sequence step by step. Every 100Nm increase, until the specified torque value. 3.4.2 Locking disc bolts are fastened in diagonal two steps. 800Nm before using hand torque wrench, 800Nm above increase 100Nm hit three laps. 3.5 After the bolts are tightened, make a mark on the bolt head.

Fourth, note: 1. To ensure that the bolt according to the requirements of one by one fastening, is strictly prohibited missed, jump, hit the phenomenon. 2. Make sure that the lubricant is applied in accordance with the lubricant.