CN201825670U

CN201825670U - Lifting appliance used for generator stator

Info

Publication number: CN201825670U
Application number: CN2010205646949U
Authority: CN
Inventors: 刘立民; 王富昌; 张春友
Original assignee: HEBEI ELECTRIC POWER CONSTRUCTION FIRST ENGINEERING Co Ltd
Current assignee: HEBEI ELECTRIC POWER CONSTRUCTION FIRST ENGINEERING Co Ltd
Priority date: 2010-10-18
Filing date: 2010-10-18
Publication date: 2011-05-11
Anticipated expiration: 2020-10-18

Abstract

The utility model discloses a lifting appliance used for a generator stator, which comprises two truss trucks, a winch, bearing beams, and a lifting shoulder pole arranged between the two bearing beams; the bearing beams and the lifting shoulder pole are vertical; and the contact surface of the bearing beams and the lifting shoulder pole is optimized from the original plane contact to spherical contact, which increases the contact area; more importantly, problems caused by unbalanced stress on four points are solved by naturally recovering potential differences due to the stress of a spherical body; and the safety of the generator stator and each device during lifting are guaranteed.

Description

The lifting appliance that is used for generator unit stator

Technical field

The utility model belongs to a kind of lifting appliance, particularly a kind of lifting appliance that is used to lift generator unit stator.

Background technology

Generator unit stator is one of equipment important in the power plant construction, because its volume and weight is all bigger, in transportation and hoisting process, need to take many measures to ensure process safety, so the lifting of generator unit stator is the work that technology content is higher, operating sequence is complicated.At present, the hanging method that generator unit stator adopts normally adopts two the purlin cars and the winch of steam turbine building, in a side of every purlin car owner's suspension hook one cover assembly pulley is installed, be connected a bearing beam by the main suspension hook on every purlin car jointly with assembly pulley, and then on two bearing beams, place a lifting shoulder pole, the lifting shoulder pole is positioned at the centre of every bearing beam, and lifting shoulder pole and bearing beam are plane contact, lifts by crane generator unit stator by the lifting shoulder pole.

This kind method is not found phenomenon generations such as bearing beam distortion in lifting generator unit stator process, operate fairly simple; But in hoisting process because between two purlin cars and the lifting between purlin car and the winch, sinking speed can only rely on the staff at any time four suspension centres to be estimated leveling, therefore cause the unbalanced of speed easily, the commander's time difference that moment when dislocation appears in the floor height of four suspension centres, very easily occurs, cause the stressed conversion that forms moment on the contact surface between bearing beam and lifting shoulder pole, and because contact point is plane contact, as long as no matter be that bearing beam or lifting shoulder pole have a run-off the straight, will make face contact a becoming contact between the two, promptly by face stressed become a little stressed, not only increase the extra load of purlin car greatly, even more serious is that serious accident takes place easily.

The utility model content

The utility model technical issues that need to address provide and a kind ofly can guarantee stress equalization between each equipment in the generator unit stator hoisting process, make the lifting appliance of hoisting process smooth operation.

For solving the problems of the technologies described above, technical solution adopted in the utility model is:

The lifting appliance that is used for generator unit stator, comprise two purlin cars, winch, be arranged on the purlin car on assembly pulley and purlin car owner's suspension hook bonded assembly bearing beam and between two bearing beams with the movable lifting shoulder pole that cooperates of bearing beam, bearing beam is that sphere contacts with the contact surface that lifts between the shoulder pole.

The concrete structure of described lifting shoulder pole and bearing beam contact position is: lifting shoulder pole and bearing beam contact position are provided with bulb, and the top of bearing beam is provided with the ball recess that matches with the bulb that lifts the shoulder pole below.

Improvement of the present utility model is: bearing beam with the lifting shoulder pole between vertical setting.

Further improvement of the utility model is: the fore-and-aft tilt degree of the fore-and-aft tilt degree of described bearing beam and lifting shoulder pole is all less than 3.5 degree.Be the angle of inclination between two suspension centres on every purlin car, and the angle of inclination of bearing beam is all spent less than 3.5 between the two purlin cars, two suspension centres of purlin car are respectively purlin car owner's suspension hook is connected bearing beam with assembly pulley two contact points.

Owing to adopted above technical scheme, the obtained technological advance of the utility model is:

The utility model makes between each equipment and is optimized for the sphere contact by original plane contact, not only increased area of contact, the more important thing is the corresponding stressed conversion of having adjusted by 4 unbalanced generations of potential difference, even the inclination of moment takes place in certain equipment, bearing beam still can remain the sphere contact with lifting contacting between the shoulder pole, the stressed potential difference that remedies naturally by spherical surface body, reasonably solved the problem that the purlin car easily causes excess load to move, satisfy the requirement of 4 stress equalizations, guaranteed the safety of steady and generator unit stator and each equipment of hoisting process.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that the A-A of Fig. 1 is to cutaway view;

Fig. 3 is the partial enlarged drawing that bearing beam contacts with the lifting shoulder pole.

Wherein: 1. purlin car, 1-1. crossbeam dolly, 1-2. false beam, 1-3. purlin car owner's suspension hook, 2. assembly pulley, 3. bearing beam, 3-1. groove, 4. lifting shoulder pole, 4-1. bulb, 5. stator.

The specific embodiment

Below in conjunction with specific embodiment the utility model is described in more detail.

Fig. 1 is a kind of lifting appliance of generator unit stator, be used to lift the generator unit stator of 300MW unit, comprise two purlin cars 1 and winch, purlin car owner's suspension hook 1-3 is connected on the crossbeam dolly 1-1 of car top, purlin, one side crossbeam of dolly is provided with false beam 1-2, and assembly pulley 2 is connected on the false beam, and the lower end of assembly pulley is connected bearing beam 3 with the lower end of main suspension hook, two bearing beam tops vertically are connected with lifting shoulder pole 4, and the suspension hook of lifting shoulder pole is used for lifting generator unit stator 5.

Vertical setting between bearing beam 3 and the lifting shoulder pole 4, the lifting shoulder pole lower end of its contact position is provided with bulb 4-1, and the top of bearing beam is provided with the ball recess 3-1 that matches with the bulb that lifts the shoulder pole lower end, contacts for sphere between bulb and the groove.Whole lifting appliance has four suspension centres, and promptly the main suspension hook on two purlin cars and assembly pulley are connected four suspension centres at bearing beam two ends respectively.

In hoisting process, the fore-and-aft tilt degree of the fore-and-aft tilt degree of bearing beam and lifting shoulder pole is all unaffected in the scopes less than 3.5 degree, and the stressed missionary society of inclination between four suspension centres cooperates by the sphere between bulb and the groove and remedies.That is to say, the lower end of purlin car owner's suspension hook and assembly pulley allows in the 186mm scope at the diff-H on the lengthwise position, the diff-H at the two ends of lifting shoulder pole then allows in the 361mm scope, hoisting process at this scope internal stator promptly is not subjected to 4 unbalanced influences of potential difference, can be by the stressed potential difference that remedies naturally of spherical surface body, the safety of steady and each equipment when guaranteeing to lift.

Claims

1. the lifting appliance that is used for generator unit stator, comprise two purlin cars (1), winch, be arranged on the purlin car on assembly pulley (2) and purlin car owner's suspension hook (1-3) bonded assembly bearing beam (3) and between two bearing beams with the movable lifting shoulder pole (4) that cooperates of bearing beam, it is characterized in that: bearing beam contacts for sphere with lifting between the shoulder pole.

2. the lifting appliance that is used for generator unit stator according to claim 1, it is characterized in that: described lifting shoulder pole lower end and bearing beam contact position are provided with bulb (4-1), and the top of bearing beam is provided with the ball recess (3-1) that matches with the bulb that lifts the shoulder pole lower end.

3. the lifting appliance that is used for generator unit stator according to claim 1 is characterized in that: shoulder pole is vertical is provided with lifting for bearing beam.

4. according to each described lifting appliance that is used for generator unit stator of claim 1～3, it is characterized in that: the fore-and-aft tilt degree of the fore-and-aft tilt degree of described bearing beam and lifting shoulder pole is all less than 3.5 degree.