Gearboxes. The Contractor inspects all gearboxes weekly for; oil leaks; excessive operating temperature, noise, vibrations; and check loose bolts exhaust breather and replaces: worn seals; Silica gel The Contractor performs condition monitoring of all gearboxes, performs fault diagnosis when faults are detected; and tops-up oil, whenever necessary. The Contractor, furthermore, greases all backstops and anti-run back devices on all drive gearboxes on a weekly basis.
Gearboxes. To safeguard the operational reliability of gearboxes for wind turbines, a number of national and international standards and guidelines have been formulated in recent years. These standards and guidelines are, however, not intended as replacements for recognized standards, such as ISO 6336 [37] or ISO 281 [36]. On the contrary, they provide fixed rules (e.g. for determining the load distribution of spur and helical gears) and requirements (e.g. minimum safety factors) when applying these standards, with a view to adapting them to the operating conditions of wind turbine gearboxes. Requirements set out in ISO/IEC 81400-4 [7] are based on an intensive exchange of experience between all parties involved. The introduction to this standard points out that the operation and loading of a wind turbine gearbox is unlike most other industrial gear applications. The intent of this standard is to describe the differences. A speed-increasing transmission and the lack of a stable foundation are the most striking distinctions exhibited by wind turbine gearboxes. The standard describes both the requirements for the gearbox as a whole and the requirements for the individual elements, e.g. toothing, bearings, shafts etc. The load capacity of spur and helical gears is generally verified on the basis of ISO 6336 or AGMA 6006 [2]. The load capacity of bearings is proven by means of the “basic dynamic load rating” or “modified rating life” approaches described in ISO 281. In this regard, the cases of bearing damage occurring increasingly in recent years have also shown that these procedures are by no means suited as lifetime analyses, but can only be meaningfully used for preliminary design. For this reason, the later wind energy standards provide for the “advanced contact analysis” as per ISO 281 Annex B or according to the methods of the bearing manufacturers as a lifetime analysis with due consideration of the maximum contact stress. In addition, the wind energy standards contain bearing selection tables, since many of the cases of bearing damage mentioned above may be ascribed to an incorrect choice of bearing. In addition to the computational verification of the load capacities and lifetimes of the individual components of a gearbox, the newer standards also prescribe a functional verification in the form of practical demonstrations and tests. Here a distinction is made between prototype trials, field tests and series tests. The aim of the prototype trial is to examine wh...
Gearboxes. Each roll is individually driven by means of the 250 HP DC Motor via gear reducers through heavy duty universal spindles. Gear shafts are mounted on anti-friction bearings. UNIVERSAL STAINLESS & ALLOY PRODUCTS, INC. HETRAN CONTRACT C-1455 MODEL BPC-6000 OPTION D ONE (1) C.A.S./COMPUTER PACKAGE, INDUSTRIAL PC CAPABLE TO BE LINKED TO YOUR BUSINESS COMPUTER AUTOMATED STRAIGHTENING CONTROL PROGRAM The new bar straightening control software package and activation system, developed by HETRAN, INC., in cooperation with a software company, allows maximum efficiency in set-up and change overs. Pre-adjustment of all machine parameters is done via a monitor-control system. In this system, the computer outputs to all necessary devices, properly adjusting all machine components per the information stored in the computer memory library. This software was developed and proven in an actual production atmosphere in the Shalmet processing facilities. The following is a description of the standard features: CONTENT: CUSTOMIZED DISPLAY AND STORAGE OF MEASUREMENT DATA CHANGING OF DIMENSION AND MATERIAL DISPLAY OF PRE-ADJUSTMENT PARAMETERS FOR THE STRAIGHTENING PROCESS UNIVERSAL STAINLESS & ALLOY PRODUCTS, INC. HETRAN CONTRACT C-1455 MODEL BPC-6000 OPTION D ONE (1) C.A.S./COMPUTER PACKAGE, INDUSTRIAL PC CAPABLE TO BE LINKED TO YOUR BUSINESS COMPUTER AUTOMATED STRAIGHTENING CONTROL PROGRAM ORDER DATA: ORDER NUMBER CUSTOMER NAME LOT SIZE MATERIAL GRADER TENSILE STRENGTH DIAMETER TOLERANCE +/- REQUIRED PRODUCTION DATE MEASUREMENT DATA: ROLL ANGLE (TOP/BOTTOM) REVOLUTION DRIVES (TOP/BOTTOM) CURRENT DRIVES (TOP/BOTTOM) STRAIGHTENING FORCE (TOP ROLL) PRESSURE (TOP ROLL) LINEAL FORCES (INPUT/OUTPUT) CALCULATED DATA: ROLL REVOLUTION (TOP/BOTTOM) THROUGHPUT SPEED BAR REVOLUTION The display of the measured and calculated data is graphically in digital respectively analog form. All data are saved under the data string "commission". An out-print can be made, so that it is possible to suggest some pre- adjustment parameters for one commission. UNIVERSAL STAINLESS & ALLOY PRODUCTS, INC. HETRAN CONTRACT C-1455 MODEL BPC-6000 ORDER REPORT internal CUSTOMER TERM : SHALMET Corp. QUALITY / GRADE OF MATERIAL : 000 Xx 0 / 00000 XXXXXXXXXX : TEST--00001 CHARGE : C0401 DIMENSION [mm] [in] : 76.200 3.0000 PLUS - TOLERANCE [mm] [in] : 0.000 0.0000 MINUS - TOLERANCE [mm] [in] : 0.046 0.0018 DATE : 06/15/92 REVOLUTION MAIN DRIVE TOP [U/min] [RPM] : 0 BOTTOM [U/min] [RPM] : 0 GEAR RATIO : 0.0 REVOLUTION R...
Gearboxes. Manual: All internal failures of gears, shafts, synchromesh hubs, selectors, bushes, bearings, speedometer drive, and internal failure of transfer box. Automatics: All internal failures of gears, oil pump, seals, shafts, bushes, clutches, brake bands, bearings, governors, servos, torque convertor, drive plate, valve block, computer governor, modulator valve, speedometer drive. Continuous Variable Transmission CVT / Multimode / Semi-automatic: All internal failures of clutches, clutch actuators, planetary gears, reduction gears, shafts, variable pulleys, thrust link drives, internal seals, bushes and bearings. Drive System (Front/Rear) Crown wheel and pinion, front and rear drive shafts bearings, planet gears, bevel gears, constant velocity joints and internal components of the 4-wheel drive unit.
Gearboxes. Where it is necessary or where it is specified valves shall be operated via manually operated gearboxes Gearboxes shall be self-locking and capable of holding the disc in a fixed position for any extended period of time. Gearboxes shall be geared to be operated against the maximum unbalanced pressure with an effort not exceeding 200 N with each hand on the rim of a standard hand wheel. (Total effort = 400 N). Gearboxes shall also be fitted with mechanical stops to prevent excessive turning and shall be provided with replaceable shear pins. One spare shear pin shall be provided with each valve. All gearboxes shall be equipped with position indicators, adjustable travel stops and indications of the “open” and “closed” positions. The design of the gearbox shall readily allow for conversion to motorised drive at a later stage if required.
Gearboxes. The mower shall be equipped with a single, right-angle, heavy-duty, cast-iron gearbox. The gearbox blade output shaft shall be a minimum 2-3/8” diameter. Sight glass or dipstick for oil level if available. The gearbox shall be covered by a 5-year full coverage warranty from the date of acceptance. The gearbox ratios shall be designed for 540 RPM input speed and shall produce a blade tip speed of approximately 14,000 to 17,400 fpm. The gearbox shall be rated for continuous operation at 210 H.P. Complies: Yes No Driveline: Specifications and Questionnaire for 72-Inch, 3-Point Hitch Mount, Rotary Mower The main driveline shall be constant velocity type minimum Category 5 with a 4-plate slip clutch. Complies: Yes No
Gearboxes. The mower shall be equipped with a center power divider and two “twin spindle” outer right-angle heavy-duty gearboxes. The gearbox blade output shaft shall be a minimum 2-3/8” diameter. Sight glass or dipstick for oil level if available. All gearboxes, splitter, or spindle shall be covered by a 5-year full coverage warranty from the date of acceptance. The gearbox ratios shall be designed for 540 RPM or 1000 RPM input speed and shall produce a blade tip speed of approximately14,000 to 17,400 fpm. The gearbox shall be rated for continuous operation approximately 190 H.P. Complies: Yes No Driveline: The main driveline shall be constant velocity type minimum Category 5 with a 4-plate slip clutch. Complies: Yes No
Gearboxes. The mower shall be equipped with a center power divider and two “twin spindle” outer right-angle heavy-duty gearboxes. Sight glass or dipstick for oil level if available. Complies: Yes No Specifications for an 8’, Tow-Type, Rotary Mower All gearboxes, splitter, or spindle shall be covered by a 5-year full coverage warranty from the date of acceptance. Complies: Yes No The gearbox ratios shall be designed for 540 RPM or 1000 RPM input speed and shall produce a blade tip speed of approximately16,000 to 17,400 fpm. Complies: Yes No All gearboxes and power divider shall have splined shafts. Blade output shafts shall be 3” diameter and have seal protectors to protect against wire, twine and debris from damaging seals.
Gearboxes. The mower shall be equipped with a 2-way power divider and two right-angle heavy-duty gearboxes or a combination power divider/gearbox and one heavy duty wing gearbox. Sight glass or dipstick for oil level if available. Complies: Yes No All gearboxes, splitter, or spindle shall be covered by a 5-year full coverage warranty from the date of acceptance. Complies: Yes No The gearbox ratios shall be designed for 540 RPM or 1000 RPM input speed and shall produce a blade tip speed of approximately14,000 to 16,500 fpm. Complies: Yes No The main gearbox or the diverter gearbox shall be rated for continuous operation at 250 H.P. The wing and/or gear boxes powered by a power splitter shall be rated for continuous operation at 225 H.P. Complies: Yes No Power Divider or Main Gearbox Ratings must be at a minimum: Input H.P.: 250 Output H.P.: 250 Continuous H.P.: 250 Center Gearbox Ratings must be at a minimum: (only if used with power divider) Input H.P.: 225 Output H.P.: 225 Continuous H.P.: 225 Wing Gearbox Ratings must be at a minimum: Input H.P.: 225 Output H.P.: 225 Continuous H.P.: 225 Complies to all the above specs regarding gearbox ratios. Complies: Yes No Gearbox blade output shafts shall be at a minimum, 3” diameter and have seal protectors to protect against wire, twine and debris from damaging seals.
Gearboxes. The mower shall be equipped with a 3-way power divider and three right-angle heavy-duty gearboxes or a combination power divider/gearbox and two heavy duty wing gearboxes. Sight glass or dipstick for oil level if available. Complies: Yes No All gearboxes, splitter, or spindle, shall be covered by a minimum 5-year full coverage warranty from the date of acceptance. Complies: Yes No The gearbox ratios shall be designed for 540 RPM or 1000 RPM input speed and shall produce a blade tip speed of approximately14,000 to 16,500 fpm. Complies: Yes No The main gearbox or the diverter gearbox shall be rated, at a minimum, for continuous operation at 250 H.P. The wing and/or gear boxes powered by a power splitter shall be rated, for a minimum, for continuous operation at 225 H.P. Complies: Yes No Power Divider or Main Gearbox Ratings must be at a minimum: Input H.P.: 250 Output H.P.: 250 Continuous H.P.: 250 Center Gearbox Ratings must be at a minimum: (only if used with power divider) Input H.P.: 225 Output H.P.: 225 Continuous H.P.: 225 Wing Gearbox Ratings must be at a minimum: Input H.P.: 225 Output H.P.: 225 Continuous H.P.: 225 Complies to all the above specs regarding gearbox ratios. Complies: Yes No All gearboxes and power divider shall have splined shafts. Blade output shafts shall be, at a minimum, 3” diameter and have seal protectors to protect against wire, twine, and debris from damaging seals. Complies: Yes No Driveline: The main driveline shall be constant velocity type rated Cat 6 CV with slip clutch. The wing drivelines Cat 5 with slip clutch to each wing. Questionnaire for an Industrial Grade Heavy Duty, Tow-Type, Three Section Rotary Mower All power shafts shall have splined split clamp type connections or equal. Complies: Yes No Each section and gearbox shall be protected from overload by an adjustable slip clutch. Complies: Yes No A standard 540 RPM. Complies: Yes No Blade Holders: The blade holders shall be the heavy duty forged “crossbar” style with integrated stump-jumper.
