CN112408206A

CN112408206A - Novel bridge crane

Info

Publication number: CN112408206A
Application number: CN202011405878.5A
Authority: CN
Inventors: 钟铭; 周桓; 邬江虎; 付利民; 申杰
Original assignee: Huaneng Qinmei Ruijin Power Generation Co Ltd
Current assignee: Huaneng Qinmei Ruijin Power Generation Co Ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-02-26

Abstract

The invention discloses a novel bridge crane which comprises an electric hoist, wherein the electric hoist is movably connected with an I-shaped beam, two groups of box beams are arranged on the left side and the right side of the I-shaped beam, two groups of end beams are welded on the front side and the rear side of the two groups of box beams, the end beams on the same side are connected through end beam connecting short circuits, and two groups of rollers are fixedly arranged on two sides of each end beam. According to the novel bridge crane, the first trolley, the second trolley and the electric hoist are arranged, diversification of lifting speeds of different hoisting mechanisms is met, small objects can be hoisted quickly by using the electric hoist, the first trolley or the second trolley can be selected according to weight and installation accuracy requirements, the selection is wide, the adaptability is high, the problems that the lifting hook span of large-size objects such as a generator stator and a vertical coiled pipe cannot meet hoisting requirements are solved, the hoisting speed of the small-tonnage objects is increased, and the operation is more convenient.

Description

Novel bridge crane

Technical Field

The invention relates to the field of cranes, in particular to a novel bridge crane.

Background

The bridge crane of the steam turbine room is a common hoisting device in the steam turbine room of a thermal power plant, in the installation process of a steam turbine body and accessory equipment, the steam turbine and the accessory equipment have the requirements of large weight, large size, high installation matching precision and the like, and the high-precision control hoisting machine plays a vital role;

the existing crane has certain disadvantages, firstly, the existing crane only has one trolley, the trolley only has one large-tonnage lifting hook, which can not meet the requirement of high-pressure lifting of a field generator stator and a vertical coiled pipe, the high-pressure lifting external dimension of the generator stator and the vertical coiled pipe leads to larger lifting appliance dimension, the distance between two lifting hooks on one trolley is too short, which can not meet the requirement of field lifting, the traveling function is single, in order to ensure that the lifting precision and safety meet the requirement, the existing trolley is provided with one big hook and one small hook, the lifting capacity of the large hook is large, the lifting speed of the big hook is slow, the lifting weight of the small hook is small, the speed is higher than that of the big hook, one small hook can not meet the requirement of the field in the daily common maintenance process, the field maintenance and the mounting and lifting speed are influenced, auxiliary lifting equipment is not provided, and the traveling trolley is complex and inconvenient to operate relative to an electric hoist when lifting small, therefore, a novel bridge crane is provided.

Disclosure of Invention

The invention mainly aims to provide a novel bridge crane which can effectively solve the defects of the existing crane in the background technology, firstly, the existing crane only has one trolley, the trolley only has one large-tonnage lifting hook and cannot meet the requirement of high-pressure lifting of a stator of an on-site generator and a vertical coiled pipe, the high-pressure outer dimension of the stator of the generator and the vertical coiled pipe leads the size of a lifting appliance to be larger, the distance between two lifting hooks on one trolley is too short to meet the requirement of on-site lifting, the traveling function is single, in order to ensure that the lifting precision and the safety meet the requirement, the existing trolley is provided with one big hook and one small hook, the lifting capacity of the big hook is large, the lifting speed of the big hook is slow, the lifting weight of the small hook is small, the speed is higher than that of the big hook, one small hook cannot meet the on-site requirement in the daily ordinary maintenance process, and the on-site maintenance and, auxiliary hoisting equipment is not arranged, and the travelling crane trolley is complex and inconvenient to operate relative to the electric hoist when hoisting small-tonnage objects.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a novel bridge crane, includes electric block, electric block and I-beam swing joint, the left and right sides of I-beam is provided with two sets of box-shaped beams, and is two sets of the welding of both sides is provided with two sets of end beams, homonymy around the box-shaped beam the end beam passes through the end beam and connects the short circuit and link to each other, the equal fixed mounting in both sides of end beam has two sets of gyro wheels, the end beam just is located box-shaped beam one side fixed mounting has two sets of gyro wheels, and is two sets of lean on outside fixed mounting to have drive arrangement in the gyro wheel, drive.

Preferably, the right sides of the two groups of box beams are fixedly provided with a cab, the right side of the cab is fixedly provided with a ladder stand, the left side of the box beam and the right side of the box beam on the right side are both provided with connecting rods, and the tops of the connecting rods are fixedly provided with rollers.

Preferably, a safety fence is arranged at the top of each box girder.

Preferably, the two groups of end beams are movably provided with a first trolley and a second trolley, the first trolley is positioned on the left side of the second trolley, and a trolley track is arranged at the bottom of the second trolley.

Preferably, the outer sides of the two groups of end beams are provided with anti-collision rods, and a cushion pad is arranged between the end beams connected with the short circuit.

Preferably, the lifting speed of the main lifting mechanism in the first trolley is 0.176-1.76 m/min, the lifting speed of the auxiliary lifting mechanism is 0.749-1.72 m/min, the lifting speed of the lifting mechanism of the second trolley is 0.172-1.72 m/min, and the lifting speed of the electric hoist is 7 m/min.

Compared with the prior art, the invention has the beneficial effects that:

through being provided with first dolly, second dolly and electric block, the variousness such as three's hoisting weight and hoisting speed satisfies different hoists at each hoisting mechanism rising speed's pluralism, but general little article use electric block quick hoisting, can select first dolly or second dolly according to weight and installation accuracy requirement, select wide and strong adaptability, solve generator stator and vertical coiled pipe height and increase large-scale article and lift by crane the lifting hook span and unsatisfied hoist and mount the requirement scheduling problem, it has the convenience to accelerate little tonnage article hoist and mount speed and operation.

Drawings

FIG. 1 is a front view of a novel bridge crane of the present invention;

FIG. 2 is a top view of the novel bridge crane of the present invention;

fig. 3 is a left side view of the novel bridge crane of the invention.

In the figure: 1. an electric hoist; 2. a cab; 3. climbing a ladder; 4. a connecting rod; 5. a roller; 6. a security fence; 7. a first carriage; 8. a second carriage; 9. a drive device; 10. a box beam; 11. an I-beam; 12. a trolley track; 13. an end beam; 14. the end beam is connected with a short circuit; 15. a cushion pad; 16. an anti-collision rod.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-3, a novel bridge crane comprises an electric hoist 1, the electric hoist 1 is movably connected with an i-beam 11, two groups of box-shaped beams 10 are arranged on the left side and the right side of the i-beam 11, two groups of end beams 13 are welded on the front side and the rear side of the two groups of box-shaped beams 10, the end beams 13 on the same side are connected with a short circuit 14 through the end beams, two groups of rollers 5 are fixedly arranged on the two sides of each end beam 13, two groups of rollers 5 are fixedly arranged on one side of each end beam 13, a driving device 9 is fixedly arranged on the outer side of each two groups of rollers 5, and four groups of driving.

The right sides of the two groups of box beams 10 are fixedly provided with a cab 2, the right side of the cab 2 is fixedly provided with a ladder stand 3, the left side of the left box beam 10 and the right side of the right box beam 10 are both provided with connecting rods 4, the tops of the connecting rods 4 are fixedly provided with rollers 5, the tops of the box beams 10 are both provided with safety fences 6, two groups of end beams 13 are movably provided with a first trolley 7 and a second trolley 8, the first trolley 7 is positioned on the left side of the second trolley 8, and the bottom of the second trolley 8 is provided with a trolley track 12.

The outer sides of the two groups of end beams 13 are respectively provided with an anti-collision rod 16, a cushion pad 15 is arranged between the end beam connecting short circuits 14, the first trolley 7 is a 132T/32T trolley, the lifting speed of a main lifting mechanism in the first trolley 7 is 0.176-1.76 m/min, the lifting speed of an auxiliary lifting mechanism is 0.749-1.72 m/min, the second trolley 8 is a 225T trolley, the lifting speed of the lifting mechanism of the second trolley 8 is 0.172-1.72 m/min, and the lifting speed of the electric hoist 1 is 7 m/min.

By adopting the technical scheme: through being provided with first dolly 7, second dolly 8 and electric block 1, the variousness such as three's hoisting weight and hoisting speed satisfies different hoists in the pluralism of each hoisting mechanism rising speed, the hoisting that generally little article used electric block 1 can be quick, can select first dolly 7 or second dolly 8 according to weight and installation accuracy requirement, select wide and strong adaptability, solve generator stator and vertical coiled pipe height and increase the unsatisfied hoist and mount requirement scheduling problem of lifting hook span of lifting by crane of large-scale article, it has the convenience to accelerate little tonnage article hoist and mount speed and operation.

It should be noted that the invention is a novel bridge crane, when in use, firstly, the crane is placed on a rail above a main factory building and is pressed on the rail through rollers 5, the rail has a limiting function on the crane, two trolley rails 12 of a steam turbine room crane are respectively arranged above two groups of box beams 10 according to the designed span, the rails are welded with the box beams 10, the problem that the span of a generator stator and a vertical serpentine pipe high-rise large-scale object lifting hook does not meet the lifting requirement is solved, a first trolley 7 and a second trolley 8 are arranged and installed on the trolley rails 12, wherein the first trolley 7 is provided with a main lifting mechanism with a lifting capacity of 132t and an auxiliary lifting mechanism with a lifting capacity of 32t, the second trolley 8 is provided with only 1 lifting device with a lifting capacity of 225t, and the first trolley 7 and the second trolley 8 run on the trolley rails 12, the left and right direction positions of a lifting hook are adjusted, an I-beam 11 is connected with a box beam 10 in a welding mode, the I-beam 11 is a track I-beam 11 of an electric hoist 1, the electric hoist 1 runs on the track I-beam 11, safety fences 6 are arranged on two sides of the crane beam, the safety fences 6 are connected with the box beam 10 through bolts, a cab 2 is arranged below an end beam 13 on one side and passes through a ladder stand 3 to the top of the box beam 10 from the cab 2, the ladder stand 3 is connected with the box beam 10 and the cab 2 through bolts, in order to prevent the crane and the crane from directly colliding with a track limiting device, a cushion pad 15 and an anti-collision bar 16 are designed to effectively protect the crane, in order to meet the diversification of the lifting speeds of various lifting mechanisms during the design of different hoisting parts, the lifting speed of a main lifting mechanism of a first trolley 7 is 0.176-1.76 m/min, the lifting speed of an auxiliary lifting mechanism is 0.749-1.72 m/, the lifting speed of the lifting mechanism of the second trolley 8 is 0.172-1.72 m/min, the lifting speed of the electric hoist 1 is 7m/min, common small objects can be quickly lifted by using the electric hoist 1, different trolleys can be selected according to the weight and installation accuracy requirements, the selection range is wide, the adaptability is strong, and the trolley is practical.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A novel bridge crane comprises an electric hoist (1), and is characterized in that: electric block (1) and I-beam (11) swing joint, the left and right sides of I-beam (11) is provided with two sets of box beam (10), and is two sets of the welding of both sides is provided with two sets of end beam (13) around box beam (10), homonymy end beam (13) are connected short circuit (14) through the end beam and are linked to each other, the equal fixed mounting in both sides of end beam (13) has two sets of gyro wheels (5), end beam (13) just are located box beam (10) one side fixed mounting have two sets of gyro wheels (5), and are two sets of lean on outside fixed mounting to have drive arrangement (9) in gyro wheel (5), drive arrangement (9) are provided with four groups altogether.

2. The novel bridge crane as claimed in claim 1, wherein: the right sides of the two groups of box-shaped beams (10) are fixedly provided with a cab (2), the right side of the cab (2) is fixedly provided with a ladder (3), the left side of the box-shaped beams (10) and the right side of the box-shaped beams (10) are both provided with a connecting rod (4), and the top of the connecting rod (4) is fixedly provided with a roller (5).

3. The novel bridge crane as claimed in claim 1, wherein: safety fences (6) are arranged at the tops of the box girders (10).

4. The novel bridge crane as claimed in claim 1, wherein: two sets of end beam (13) movable mounting has first dolly (7) and second dolly (8), just first dolly (7) are located the left side of second dolly (8), the bottom of second dolly (8) is provided with dolly track (12).

5. The novel bridge crane as claimed in claim 1, wherein: the outer sides of the two groups of end beams (13) are provided with anti-collision rods (16), and a cushion pad (15) is arranged between the end beams connected with the short circuit (14).

6. The novel bridge crane as claimed in claim 4, wherein: the lifting speed of a main lifting mechanism in the first trolley (7) is 0.176-1.76 m/min, the lifting speed of an auxiliary lifting mechanism is 0.749-1.72 m/min, the lifting speed of a lifting mechanism of the second trolley (8) is 0.172-1.72 m/min, and the lifting speed of the electric hoist (1) is 7 m/min.