CN201209632Y

CN201209632Y - Coupler torquemoment overload protection device

Info

Publication number: CN201209632Y
Application number: CNU2008200379520U
Authority: CN
Inventors: 邱宝玉; 衡井武
Original assignee: Wuxi Chuangming Transmission Engineering Co Ltd
Current assignee: Wuxi Chuangming Transmission Engineering Co Ltd
Priority date: 2008-06-06
Filing date: 2008-06-06
Publication date: 2009-03-18
Anticipated expiration: 2018-06-06

Abstract

The utility model relates to a coupling torque overload protecting device suitable for the torque overload protection for the connection of a high-speed shaft of a gear case of a megawatt wind generating set and a shaft coupling of a generator. The coupling torque overload protecting device is characterized in that a friction disc is arranged a changeover panel or a shaft and a flange, the changeover panel or the shaft and the flange are pressed as a whole, the changeover panel or the shaft and a pressure plate are matched through a front edge and fastened by a bolt and a disc overloading gasket. The utility model has the advantages of simple and reasonable structure, convenience and high precision for regulating overloading slip torque values; has capabilities of torque transmission and automatic recovery by using the stress property of the disc overloading gasket; has the advantages of large torque transmission values, simple and quick part replacement, small operation space, convenience for installation and maintenance, and is quite suitable for the operation in the high-altitude narrow space of the wind generating set.

Description

Coupling torque overload protective gear

Technical field

The utility model relates to a kind of coupling torque overload protective gear, and a kind of specifically torque overload slipping protection device is applicable to the torque overload protection that MW class wind turbine group gearbox high-speed end axle connects with the generator shaft coupling.

Background technique

The MW class wind turbine group requires that to coupling torque overload safety protection (skidding) function is arranged, and moment of torsion can recover after descending automatically, to satisfy under its complicated abominable working condition the protection requirement to unit.

Plain edition torque overload protective gear commonly used normally adopts swelling to overlap the form of embedded copper sheathing; tight a bolt according to given moment during on-the-spot the installation; moment of torsion passes to copper sheathing by transfer panel (axle), passes to flange plate through the swelling cover again, and copper sheathing skids when torque overload.

Adopt the overload slipping protection device of swelling cover form that its intrinsic defective is arranged, at first, the copper sheathing that skids is directly installed on the axle, axle and copper sheathing were worn easily when overload was skidded, along with the skid increase of number of times of overload, axle and copper sheathing wearing and tearing also can increase, and cause tension force to diminish, thereby the feasible precision of skidding is difficult to be guaranteed; Secondly, axle and copper sheathing are worn easily, after the precision of skidding is affected, because the swelling cover comes the swelling copper sheathing by the conical surface, how much being difficult to of wear extent determine, thus the screw-down torque value that causes adjusting bolt be difficult to determine, make resetting of breakaway torque be difficult to guarantee precision.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, thereby provides a kind of transmitting torque value accurately adjustable, and can recover coupling torque overload protective gear torque transmission capacity, highi degree of accuracy overload breakaway torque precision automatically.

Main solution of the present utility model is achieved in that

The utility model comprises transfer panel or shaft flange dish, adjusts bolt, feature is between transfer panel or axle and flange plate friction disk to be set, transfer panel or axle and flange plate are by friction disk pressing one, and transfer panel or axle cooperate by seam with pressing plate, and employing bolt and dish-like heavily loaded packing ring are fastening.

Compared with the prior art the utility model has the following advantages:

1, the utility model is simple and reasonable, and torque transmission capacity can reach 40,000Nm, and overload breakaway torque value is easy to adjust, precision is high, and the test determination accuracy rating is in ± 15%;

2, utilize the mechanical characteristic of dish-like heavily loaded packing ring, have the automatic recovery capability of transmitting torque;

3, transfer panel (axle) 1 and pressing plate 4 cooperate by seam, avoid transfer panel (axle) 1, pressing plate 4 to produce interlock with flange plate 3 decentraction effectively and the part injury that causes;

4, can adopt and the design of torsion pass structural parts whole, the transmitting torque value is big, the part exchanging simple and fast, and the operating space is little, is very suitable for operating in the narrow space scope of wind power generating set high-altitude, and is convenient for installation and maintenance.

Description of drawings

Fig. 1 is the utility model structural representation.

Embodiment

Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:

As shown in Figure 1: comprise transfer panel or axle 1, friction disk 2, flange plate 3, pressing plate 4, adjust bolt 5 and dish-like heavily loaded packing ring 6 etc.

The utility model comprises transfer panel or axle 1, flange plate 3, adjusts bolt 5, feature is between transfer panel or axle 1 and flange plate 3 friction disk 2 to be set, transfer panel or axle 1 pass through friction disk 2 pressing one with flange plate 3, transfer panel or axle 1 cooperate by seam with pressing plate 4, and employing bolt 5 and dish-like heavily loaded packing ring 6 are fastening.

The utility model utilizes moment of torsion to be passed to flange plate 3 from transfer panel (axle) 1 by friction disk 2 in order to reach the purpose that improves overload breakaway torque precision, adjusts the pre-fastening moment of bolt 5 and realizes that the transmitting torque value of friction disk 2 is accurately adjustable; The torque overload number of times that skids increases back friction disk 2 and is subjected to certain wearing and tearing, and the pressure of bolt 5 and 4 pairs of friction disks 2 of pressing plate remains unchanged under the effect of dish-like heavily loaded packing ring 6, makes that the precision of overload breakaway torque value is higher; When friction disk 2 wear extenies are excessive, the pre-fastening moment of bolt 5 adjusted to initial regulation moment get final product, the pressure that this moment, friction disk 2 was subjected to is identical with original state, thereby overload breakaway torque value is also identical; When the torque value that transmits is lower than breakaway torque, the transmission that under bolt 5 and 6 effects of dish-like heavily loaded packing ring, recovers moment of torsion.

Claims

1, a kind of coupling torque overload protective gear; comprise transfer panel or axle (1), flange plate (3), adjust bolt (5); it is characterized in that between transfer panel or axle (1) and flange plate (3), friction disk (2) being set; transfer panel or axle (1) pass through friction disk (2) pressing one with flange plate (3); transfer panel or axle (1) cooperate by seam with pressing plate (4), and employing bolt (5) and dish-like heavily loaded packing ring (6) is fastening.