A kind of blade of wind-driven generator locking device
Technical field
The present invention relates to the locking field of wind-driven generator, specifically, relate to a kind of blade of wind-driven generator locking device.
Background technique
The wind generator set blade locking device is the important component part of blower fan safety component, has important function when blower fan is safeguarded.
At present, the structure of wind generator set blade locking device mainly adopts the pin axle type structure, and part adopts push-pull structure.But the pin axle type structure can't realize that along the moving radially of pitch variable bearings to such an extent as to bearing pin can't be fitted with the pitch variable bearings inner ring, when fitful wind blew blade, impact loading made bearing pin deform easily on bearing pin; And employed plug-type blade shrinking device is that plain bolt bears shearing force in the market, must often change bolt.
Increase along with wind-driven generator kludge quantity, later maintenance cost also improves gradually, and the rising along with power level, blade locking device is constantly increased by load, original blade locking device can not fully guarantee the safety of blower fan, so original blade locking device can not satisfy the needs of blower fan.This is the deficiencies in the prior art part.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of blade of wind-driven generator locking device, and this apparatus structure is reliable, bearing capacity is strong, adaptability is good.
The present invention adopts following technological scheme to realize goal of the invention:
A kind of blade of wind-driven generator locking device, comprise connecting plate, the side of described connecting plate is welded with dunnage, it is characterized in that: be provided with the welding locking block on the described connecting plate, described welding locking block matches with described connecting plate by the of bonding structure, the hold-down bolt of a pair of symmetry passes described welding locking block and is installed on the described connecting plate, described welding locking block can slide along described hold-down bolt, the circular hole that the dual-purpose bolt of a pair of symmetry passes described welding locking block is installed on the described connecting plate, be provided with the tapped hole that cooperates with described dual-purpose bolt on the described dunnage, described dual-purpose bolt also can pass described tapped hole and fix by nut, so that described welding locking block is withstood at the top of described dual-purpose bolt.
As the further restriction to the technical program, described welding locking block comprises slide block, is provided with ejector pin on the described slide block, and described ejector pin connects two supporting frames, also is provided with long sliding hole on the described slide block, and described hold-down bolt passes described long sliding hole.
As the further restriction to the technical program, described hold-down bolt passes packing ring and described long sliding hole.
As the further restriction to the technical program, described of bonding structure comprise the groove that is arranged on the described connecting plate and with described slide block on its protruding part that matches.
Compared with prior art, advantage of the present invention and good effect are: the present invention has avoided hold-down bolt to bear shearing force by the of bonding structure between the slide block of connecting plate and welding locking block, and application area is wider; Secondly, by adjusting the position of dual-purpose bolt, can conveniently realize the switching of working state and off working state, by the position of adjusting dual-purpose bolt ejector pin and the pitch variable bearings ring gear of welding locking block are fitted tightly, avoided the impact of pitch variable bearings ring gear to blade locking device; Avoided the frequent hold-down bolt, both reduced maintenance cost, also made faster and more convenient operation.Avoided behind the nut screwing clamping causing dual-purpose bolt looseness because of vibrations.
Description of drawings
Fig. 1 is the blade locking device scheme of installation
Fig. 2 is blade locking device of bonding structural representation.
Fig. 3 is blade locking device off working state schematic representation.
Fig. 4 is the blade locking device working state schematic representation.
Fig. 5 is connecting board structure figure.
Fig. 6 is slide block structure figure.
Among the figure: 1, slide block, 2, ejector pin, 3, supporting frame, 4, hold-down bolt, 5, packing ring, 6, connecting plate, 7, dunnage, 8, dual-purpose bolt, 9, nut, 10, long sliding hole, 11, the welding locking block, 12, groove, 13, protruding part.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment the present invention is done further to describe in detail.
Referring to Fig. 1-Fig. 6, the side of described connecting plate 6 is welded with dunnage 7, be provided with the welding locking block on the described connecting plate 6, described welding locking block 11 matches with described connecting plate 6 by the of bonding structure, the hold-down bolt 4 of a pair of symmetry passes described welding locking block and is installed on the described connecting plate 6, described welding locking block 11 can slide along described hold-down bolt 4, the circular hole that the dual-purpose bolt 8 of a pair of symmetry passes described welding locking block 11 is installed on the described connecting plate, be provided with the tapped hole that cooperates with described dual-purpose bolt 8 on the described dunnage 7, described dual-purpose bolt 8 also can pass described tapped hole and fixing by nut 9, so that described welding locking block 11 is withstood at the top of described dual-purpose bolt 8.
Described welding locking block 11 comprises slide block 1, is provided with ejector pin 2 on the described slide block 1, and described ejector pin 2 connects two supporting frames 3, also is provided with long sliding hole 10 on the described slide block 1, and described hold-down bolt 4 passes described long sliding hole 10.
Described hold-down bolt 4 passes packing ring 5 and described long sliding hole 10.
Described of bonding structure comprise the groove 12 that is arranged on the described connecting plate and with described slide block on its protruding part that matches 13.
Dual-purpose bolt 8 passes the circular hole on the slide block that welds locking block 11 under the off working state, be installed in the tapped hole on the connecting plate 6, when wind wheel rotates, guarantee to weld locking block and can not slide along connecting plate 6, with the dual-purpose bolt 8 of nut 9 lockings, lock simultaneously hold-down bolt 4, as shown in Figure 3; When blade locking device enters working state, unclamp hold-down bolt 4, dual-purpose bolt 8 screws out from the tapped hole of connecting plate 6, the tapped hole that passes dunnage 7 withstands on the slide block 1 of welding locking block 11, by dual-purpose bolt 8 screw-in lengths, regulate the position of welding locking block 11 near the pitch variable bearings ring gear, nut 9 is installed on the dual-purpose bolt 8, hold-down bolt 4 is locked in the position of fastening nut 9 fixed dual-purpose bolts 8 then.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention also is not limited only to above-mentioned giving an example, and the variation that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also belong to protection scope of the present invention.