Screw propeller and gearbox drive Design of device installation method
Technical field
The present invention relates to a kind of screw propeller and gearbox drive Design of device installation method, be primarily aimed at trawlboat, utilize formerly location technology and synchronous design method, belong to the ship machinery field.
Background technology
[0002] the marine fishing fishery is the bigger industry that consumes energy, with regard to Zhejiang Province fishing boat more than 40,000 is just arranged, year oil consumption reaches 3,000,000 tons, be genuine oil consumption rich and influential family, trawlboat is a common type, fitness for purpose will have the bigger speed of a ship or plane when free running, to have bigger holder power during trawling, but most trawlboat all is at the free running design-calculated at present, but by free every trade design-calculated gear case and screw propeller when being used for trawling, can increase energy consumption greatly, and the rotating speed heavy load is easy to cause mechanical wear; And many shortcomings such as existing fishing boat main shaft propulsion system installation error is bigger, causes ship vibration big, and mechanical efficiency is low, and it is serious to consume energy.
Summary of the invention
The purpose of this invention is to provide a kind of screw propeller and gearbox drive Design of device installation method.
What the present invention will solve is that existing trawlboat power consumption is big, the irrational shortcoming of driving device.
For realizing purpose of the present invention, the technical solution used in the present invention is:
Screw propeller and gearbox drive Design of device installation method, vital parts comprises screw propeller, adapter shaft and gear case, the screw propeller that this method matches type selecting earlier and the axis hole that is connected of gear case carry out the secondary fine limit work, working accuracy is less than 0.01mm, then in the match machined of carrying out adapter shaft, two working accuracy that adapter shaft is used to assemble is less than 0.01mm, and greater than screw propeller and gear case diameter of bore 0.05-0.09mm, secondly on adapter shaft, put corresponding bearing, seal ring, annexes such as axle sleeve, then put the semiconductor refrigerating ring at two of adapter shaft, exposed part is wrapped warm material, simultaneously screw propeller and gear case axis hole are carried out electro heat, when the adapter shaft temperature is lower than subzero 8 °, when screw propeller and gear case temperature are higher than 90 °, adapter shaft two is filled in screw propeller and the gear case axis hole rapidly, with tripod that whole transmission device is fixing straight at last, after the cabin segmentation bilge lays, it is added fixed bit by gantry crane lifting in the cabin, vibration and the power consumption that so just can avoid driving device to bring because of Mismachining tolerance and installation error.
Gear case be double speed than gear case, the adapter shaft top layer is coated with chromium, the coupling of screw propeller and gear case adopts the method for Synchronization Design.
Synchronous design method is: adopt the Kj-KQ-J curve to finish the Synchronization Design of screw propeller and gear case; Design procedure is:
A, the suitable discrete diameter range of selection, Di(i=1 ... N);
B, the operating mode of navigating certainly, under the different rotating speeds, cooresponding pitch ratio, the speed of a ship or plane;
C, load behavior, under the different rotating speeds, cooresponding pitch ratio, the speed of a ship or plane;
The speed of a ship or plane and the thrust of D, the corresponding ship of reference are determined rational pitch ratio and thrust,
The speed of a ship or plane and the thrust result of E, contrast different-diameter select best diameter of propeller and pitch ratio;
F, the selected propeller characteristic of basis are determined gear case at the reduction ratio of operating mode and load behavior that navigates certainly, make it reach best energy utilization rate.
Adopt screw propeller provided by the invention and gearbox drive Design of device installation method, not only effect obviously but also low price, its design is succinct efficient, the needs that meet fishing vessel fully, and compatible mutually with it, its utilization can make numerous fishermen's work efficiency higher, and oil consumption is more saved.
Description of drawings
Fig. 1 is a Kj-KQ-J curve design schematic diagram; Fig. 2 is the trawlboat Parameter Map; Fig. 3 is 2.3,2.4 meters screw propeller design condition figure; Fig. 4 is the speed of a ship or plane and the thrust figure of corresponding ship; Fig. 5 is 2.3 meters screw propeller Parameter Map; Fig. 6 is 2.4 meters screw propeller Parameter Map; Fig. 7 is the final design parameters figure that selects.
The specific embodiment
Method of designing at trawlboat: vital parts comprises screw propeller, adapter shaft and gear case, the screw propeller that this method matches type selecting earlier and the axis hole that is connected of gear case carry out the secondary fine limit work, working accuracy is less than 0.01mm, then in the match machined of carrying out adapter shaft, two working accuracy that adapter shaft is used to assemble is less than 0.01mm, and greater than screw propeller and gear case diameter of bore 0.08mm, secondly on adapter shaft, put corresponding bearing, seal ring, annexes such as axle sleeve, then put the semiconductor refrigerating ring at two of adapter shaft, exposed part is wrapped warm material, simultaneously screw propeller and gear case axis hole are carried out electro heat, when the adapter shaft temperature reaches subzero 9 °, when screw propeller and gear case temperature reach 100 °, adapter shaft two is filled in screw propeller and the gear case axis hole rapidly, with tripod that whole transmission device is fixing straight at last, after the cabin segmentation bilge lays, it is added fixed bit by gantry crane lifting in the cabin, vibration and the power consumption that so just can avoid driving device to bring because of Mismachining tolerance and installation error.
Gear case be double speed than gear case, the adapter shaft top layer is coated with chromium, the coupling of screw propeller and gear case adopts the method for Synchronization Design.
Its supporting synchronous design method is: adopt Kj-KQ-J curve (Fig. 1) to finish the Synchronization Design of screw propeller and gear case; Design procedure is:
[0012] A, according to trawlboat parameter (Fig. 2), select suitable discrete diameter range, Di(i=1.9,2.0,2.1 ... N); B, the operating mode of navigating certainly, under the different rotating speeds, cooresponding pitch ratio, the speed of a ship or plane; According to the precompensation parameter that closes on, 2.3,2.4 meters screw propeller design conditions have been chosen as (Fig. 3); C, load behavior, under the different rotating speeds, cooresponding pitch ratio, the speed of a ship or plane; Requiring according to Design Speed is 11.93 joint parameters, has chosen 2.3 meters, and 2.4 meters screw propeller design conditions are as (Fig. 3); D, with reference to the speed of a ship or plane and the thrust (Fig. 4) of corresponding ship, determine 2.3 meters, 2.4 meters rational pitch ratios of screw propeller and thrust (Fig. 5, Fig. 6), the thrust data in the table are thrust computational data/10000; Pitch ratio data in the table are pitch ratio computational data * 5; The straight line that is parallel to coordinate axle when L1, L2, L3, L4, L5 are for data extract in the table; E, analyze 2.3 meters, the design result of 2.4 rice diameter screw propellers, though do not reach the Design Speed requirements of 11.93 joints fully, but comparison operators is considered the scope of pitch ratio should require, the design parameters of selection is seen figure (7); F, the selected propeller characteristic of basis determine that gear case is respectively 6.60,5.56 at the reduction ratio of navigate certainly operating mode and load behavior, make it reach best energy utilization rate.