CN106219404A - Blast furnace refractory brick construction circular crane - Google Patents

Abstract

The invention discloses blast furnace refractory brick construction circular crane, this crane is by from rising system improving steel wire rope, Lever Blocks, forming from liter system insurance steel cable, operation hanging scaffold, fixing device, circuit orbit, rotating mechanism, rotating cart, crane arm, walking in a horizontal state dolly, jack up unit；Described hanging scaffold promotes and stationary annular track, rotating mechanism, the body of crane arm as circular crane, in vertical direction by from rising system improving steel wire rope and fixing from rising system insurance steel cable, from rising system improving steel wire rope and several being fixed by fixing device in the horizontal direction according to hanging scaffold from the group rising system insurance steel cable；Rotating mechanism is arranged on the middle of hanging scaffold.The invention have the advantage that and be assembled into hanging scaffold body by single rod member, hanging scaffold body can complete certainly to rise action by the device of liter certainly of design and drive whole circular crane from liter, meets the requirement that at cupola well carbon brick and furnace wall, laying fireproof bricks constantly raises.

Description

Ring Crane for Blast Furnace Refractory Brick Construction

technical field

The invention belongs to the technical field of building refractory bricks for metallurgical ironmaking blast furnaces, and in particular relates to a ring crane for the construction of refractory bricks for blast furnaces.

Background technique

Due to the development of metallurgical technology, the volume of the ironmaking blast furnace has been made larger and larger, from the original small blast furnace to 2500m3, and then to 4000m3, and even to 5000m3 blast furnace, which not only reduces the cost of ironmaking, but also saves energy and protect the environment. As the environmental requirements become higher and higher, small blast furnaces with high energy consumption and serious pollution will gradually be eliminated and replaced by large blast furnaces. Due to the small size and light weight of refractory bricks in small blast furnaces, the transportation and masonry problems of refractory bricks can be solved by labor and small common machinery. For large blast furnaces, the weight of hearth carbon bricks reaches about 1.5t, or even heavier. It is necessary to use special hoisting machinery to solve the transportation and hoisting problems of large-scale carbon bricks, but at present, due to the particularity of its technology, these special hoisting machinery cannot be purchased on the market.

The blast furnace body is generally composed of furnace bottom, hearth, bosh, furnace body, furnace throat, large material bell, large hopper and other parts. Taking a 2500m3 blast furnace as an example, the inner wall of the blast furnace hearth has a maximum diameter of 14m and is fully paved. Carbon bricks; the bosh and the furnace waist are closed, and the diameter becomes smaller; in the furnace body section, the diameter changes from large to small until the furnace throat, and a layer of refractory bricks is built from the furnace bosh, furnace waist to the inner wall of the furnace throat. The brick masonry height is about 40m. It is necessary to design a crane with a lifting capacity greater than 1.5t, and the hoisting range is at any point in the blast furnace, and the diameter of the boom needs to change according to the diameter of the blast furnace. In the height direction, in order to prevent rope twisting, the lifting height cannot More than 10 meters, which requires the boom to move in the height direction to meet the requirements of the process.

Contents of the invention

The present invention is to design a circular crane for blast furnace refractory brick construction, which can hoist carbon bricks and refractory bricks to any point in the blast furnace, and is more convenient to operate, safe and efficient, and maximizes technical benefits.

In order to solve the problems of the technologies described above, the present invention provides the following technical solutions:

The circular crane for the construction of blast furnace refractory bricks provided by the present invention is composed of self-elevating system hoisting wire rope, lever block, self-elevating system safety wire rope, operating suspension pan, fixing device, rotating mechanism, circular track, rotating trolley, and lifting arm , Horizontal walking trolley and lifting device.

The suspension pan is used as a ring crane to lift and fix the body of the ring track, the rotating mechanism and the boom, and is fixed in the vertical direction by the lifting wire rope of the jacking system and the safety wire rope of the jacking system, and the lifting wire rope of the jacking system and the safety wire rope of the jacking system The number of groups is determined by the design according to the size of the hanging pan, and is fixed by the fixing device in the horizontal direction; the rotating mechanism is installed in the middle of the hanging pan, the track is installed under the hanging pan according to the radius of rotation, and the rotating trolley is installed on the track. The track rotates, the lifting arm is installed under the rotating mechanism and the rotating trolley, the horizontal traveling trolley is installed on the boom, and the lifting device is installed under the horizontal traveling trolley. Select the masonry station, operate the hoisting rope of the self-elevating system, and fix the hoisting rope of the self-elevating system and the safety rope of the self-elevating system, fix the fixing device in the circumferential direction, start the rotating trolley, and start the hoisting trolley to complete the hoisting of refractory bricks work.

As a preferred technical solution of the present invention, the hoisting wire rope of the self-elevating system is inserted manually, and is selected to be of the same type as the safety rope of the self-elevating system, and bound to the suspension pan; the hoisting wire rope is temporarily fixed by the safety rope of the self-elevating system , continuously retract and release the lever block to ensure the lifting of the suspension pan, and the connected lever block and its accessories are directly purchased by the market.

As a preferred technical solution of the present invention, the safety wire rope of the self-elevating system is manually inserted.

As a preferred technical solution of the present invention, the suspension pan is composed of ring beams, radiating beams, secondary beams and planks, and the models and sizes of the ring beams, radiating beams, secondary beams and planks are calculated according to the load.

As a preferred technical solution of the present invention, the fixing device is a bolt with trapezoidal thread, and the trapezoidal nut is welded on the radiation beam of the hanging pan. By adjusting the trapezoidal screw rod, it is tightened with the furnace wall of the blast furnace body to ensure The whole hanging pan is stable.

As a preferred technical solution of the present invention, the supporting beam of the rotating mechanism is a steel member made of channel steel.

As a preferred technical solution of the present invention, the track is made of I-beam purchased from the market, bent into an arc shape, and assembled in sections.

As a preferred technical solution of the present invention, the rotating trolley, horizontal traveling trolley and lifting device are determined according to load calculation and purchased in the market.

As a preferred technical solution of the present invention, the boom is determined according to load calculation, purchased from the market, and equipped with various direction limiting devices.

As a preferred technical solution of the present invention, the rotating mechanism is a specially made rolling device with an axial force bearing, and is equipped with an anti-loosening device. It is mainly composed of a shaft, a rotating mechanism support, a plane direction Consists of core ball bearings, axial radial bearings, compression nuts, and thrust glands. The vertical load is transmitted to the plane radial ball bearing and the support of the rotating mechanism through the shaft; the axial radial bearing ensures the verticality of the shaft. During the construction process, the rotating trolley can rotate clockwise or counterclockwise, which will cause the compression nut to loosen, and the thrust gland can ensure that the compression nut is always kept in a compressed state.

The advantage of the present invention is that: the suspension pan body is assembled into a single rod, and the suspension pan body can complete the self-elevation action through the designed self-elevating device to drive the entire ring crane to self-elevate, satisfying the need for carbon bricks in the hearth and refractory bricks on the furnace wall. Rising demands. By increasing or decreasing the shelf ring of the hanging pan, changing the diameter of the hanging pan and the length of the boom, the change of the lifting range can be completed to meet the change of the diameter of the blast furnace in the height direction. The suspension plate of the device is used as a platform for the self-elevating device of the equipment, which is simple, convenient and safe to operate; the whole set of equipment is simple, convenient to manufacture and install, and easy to obtain local materials.

Description of drawings

Fig. 1 is a schematic diagram of a circular crane for blast furnace refractory brick construction of the present invention.

Among them: 1. Lifting rope of self-elevating system, 2. Lever hoist, 3. Safety rope of self-elevating system, 5. Hanging plate, 5. Fixing device, 6. Park track, 7. Supporting beam of rotating mechanism, 8. Rotation Mechanism, 9. Rotating trolley, 10. Lifting arm, 11. Horizontal walking trolley, 12. Lifting device, 13. Blast furnace body.

Fig. 2 is a schematic diagram of the rotation mechanism of the present invention.

Among them: 14. Shaft, 15. Oil seal Ⅰ, 16. Rotary mechanism support, 17. Plane radial ball bearing, 18. Inner sleeve Ⅰ, 19. Outer cover Ⅰ, 20. Axial radial bearing Ⅰ, 21. Outer cover Ⅱ , 22. Inner sleeve II, 23. Axial radial bearing II, 24. Inner sleeve III, 25. Compression nut, 26. Gland, 27. Oil seal II, 28. Thrust gland, 29. Adjustable washer , 30. Bolt I, 31. Bolt II.

detailed description

The present invention will be further described below in conjunction with specific embodiments, but the scope of protection of the present invention is not limited to the content of the following examples.

As shown in Figure 1-2, the circular crane used for the construction of blast furnace refractory bricks, the self-elevating system lifts the steel wire rope 1, the lever block 2, the self-elevating system safety wire rope 3, the operating suspension plate 4, the fixing device 5, the rotating mechanism 8, the circular Shaped track 6, rotating dolly 9, boom 10, horizontal walking dolly 11, hoisting device 12 form.

The suspension pan 4 is used as a ring crane to lift and fix the body of the ring track 6, the rotating mechanism 8, and the boom 10, and is fixed in the vertical direction by the self-elevating system hoisting wire rope 1 and the self-elevating system safety wire rope 3, and the jacking system hoisting wire rope 1 and the number of sets of safety wire ropes 3 of the self-elevating system are determined by the design according to the size of the hanging pan 4, and are fixed by the fixing device 5 in the horizontal direction; Below the disk 4, the rotating trolley 9 is installed on the track and rotates along the working track 6. The lifting arm 10 is installed under the rotating mechanism 8 and the rotating trolley 9, the horizontal walking trolley 11 is installed on the boom, and the lifting device 12 Be installed under the horizontal walking dolly 11. Select the masonry station, operate the hoisting rope of the self-elevating system, and fix the hoisting rope of the self-elevating system and the safety rope of the self-elevating system, fix the fixing device in the circumferential direction, start the rotating trolley, and start the hoisting trolley to complete the hoisting of refractory bricks work.

The lifting wire rope 1 of the self-elevating system is manually inserted, and is selected to be of the same model as the safety rope 3 of the self-elevating system, and is bound on the suspension pan; The hoist 2 guarantees the lifting of the suspension pan, and the lever hoist and its accessories connected to it are purchased directly from the market.

The self-elevating system safety wire rope 3 is manually inserted.

The hanging pan 4 is composed of ring beams, radiating beams, secondary beams and planks, and the models and sizes of the ring beams, radiating beams, secondary beams and planks are calculated according to the load.

The fixing device 5 is a bolt with trapezoidal thread, and the trapezoidal nut is welded on the radiation beam of the hanging pan. By adjusting the trapezoidal screw rod, it is tightened with the furnace wall 13 of the blast furnace body to ensure the stability of the entire hanging pan.

The supporting beam 7 of the rotating mechanism is a steel member made of channel steel.

Described track 6 is made by the I-beam of market purchase, is bent into garden arc shape, and is assembled in sections.

The rotating trolley 9, the horizontal traveling trolley 11, and the hoisting device 12 are determined according to load calculations and purchased in the market.

Described jib 10 is determined according to load calculation, is purchased in the market, and various direction limiting devices are housed thereon.

The rotating mechanism 8 is a specially made rolling device with an axially stressed bearing, and is equipped with an anti-loosening device. As shown in Figure 2, it is mainly composed of a shaft 14, a rotating mechanism support 16, a plane centripetal Ball bearing 17, axial centripetal bearing 20, axial centripetal bearing II 23, compression nut 25, thrust gland 28 are formed. The vertical load is transmitted to the plane centripetal ball bearing 17 and the rotating mechanism support 16 through the shaft 14; the axial centripetal bearing 20 and the axial centripetal bearing II 23 ensure the perpendicularity of the shaft 14. In the construction process, the rotating trolley 9 can rotate clockwise or counterclockwise, which will cause the compression nut 25 to loosen, and the thrust gland 28 can ensure that the compression nut 25 remains in a compressed state all the time.

The advantage of the present invention is that: the suspension pan body is assembled into a single rod, and the suspension pan body can complete the self-elevation action through the designed self-elevating device to drive the entire ring crane to self-elevate, satisfying the need for carbon bricks in the hearth and refractory bricks on the furnace wall. Rising demands. By increasing or decreasing the shelf ring of the hanging pan, changing the diameter of the hanging pan and the length of the boom, the change of the lifting range can be completed to meet the change of the diameter of the blast furnace in the height direction. The suspension plate of the device is used as a platform for the self-elevating device of the equipment, which is simple, convenient and safe to operate; the whole set of equipment is simple, convenient to manufacture and install, and easy to obtain local materials.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. blast furnace refractory brick construction circular crane, it is characterised in that this crane is pulled by from liter system improving steel wire rope (1), hands Calabash (2), certainly liter system insurance steel cable (3), operation hanging scaffold (4), fixing device (5), circuit orbit (6), rotating mechanism (8), rotating cart (9), crane arm (10), walking in a horizontal state dolly (11), jack up unit (12) composition；Described hanging scaffold (4) conduct Circular crane promotes and stationary annular track (6), rotating mechanism (8), the body of crane arm (10), in vertical direction by certainly rising system System boom hoist cable (1) and from rise system insurance steel cable (3) fix, from rise system improving steel wire rope (1) and from rise system protect The group of danger steel wire rope (3) is several is fixed by fixing device (5) in the horizontal direction according to hanging scaffold (4)；Rotating mechanism (8) is arranged on hanging scaffold (4) middle, track (6) is arranged on the lower section of hanging scaffold (4) according to radius of turn, and rotating cart (9) is installed in orbit, edge Making track (6) to rotate, crane arm (10) is arranged on rotating mechanism (8) and the lower section of rotating cart (9), walking in a horizontal state dolly (11) Being arranged on crane arm, jack up unit (12) is arranged on the lower section of walking in a horizontal state dolly (11).

Blast furnace refractory brick construction circular crane the most according to claim 1, it is characterised in that described carries from liter system Rise steel wire rope (1) and inserted system by artificial, select with from rising system safety rope (3) same model, be bundled on hanging scaffold；Boom hoist cable (1) by from rising the interim fixing of system safety rope (3), constantly folding and unfolding Lever Blocks (2) ensures the lifting of hanging scaffold.

Blast furnace refractory brick construction circular crane the most according to claim 1, it is characterised in that described protects from the system of liter System is inserted by artificial in danger steel wire rope (3)；Described hanging scaffold (4) is made up of annular girder, radiation beam, secondary beam and bed board.

Blast furnace refractory brick construction circular crane the most according to claim 1, it is characterised in that described fixing device (5) being that the bolt of band trapezoidal thread is paid, trapezoidal nut is welded on the radiation beam of hanging scaffold, by regulation trapezoidal screw, be allowed to Blast-furnace body furnace wall (13) holds out against, it is ensured that whole hanging scaffold is stablized motionless.

Blast furnace refractory brick construction circular crane the most according to claim 1, it is characterised in that described rotating mechanism props up Bolster (7) is the steel beam column that channel-section steel makes；The I-steel that described track (6) is makes, and curves garden arcuation, and merogenesis assembles.

Blast furnace refractory brick construction circular crane the most according to claim 1, described rotating mechanism (8) is main by axle (14), rotating mechanism bearing (16), plane radial ball bearing (17), axial radial bearing I (20), axial radial bearing II (23), clamp nut (25), thrust gland (28), adjustable packing ring (29), bolt (30) composition；Thrust gland (28) is by adjustable Packing ring (29), bolt (30) are fixed on axle (14), prevent clamp nut (25) from loosening, it is to avoid axle (14) slips and causes the accident.