CN213599837U

CN213599837U - Heating furnace cantilever roller head fixing mechanism

Info

Publication number: CN213599837U
Application number: CN202021446358.4U
Authority: CN
Inventors: 刘华山
Original assignee: Taizhou Honghua Metallurgical Machinery Co ltd
Current assignee: Taizhou Honghua Metallurgical Machinery Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-07-02
Anticipated expiration: 2030-07-21

Abstract

The utility model provides a heating furnace cantilever roller head fixing mechanism, which comprises a roller head, a roller head shaft shoulder and a roller center shaft, wherein the roller head is provided with a connecting and fixing sleeve, the roller head shaft shoulder and the roller center shaft are sequentially and axially fixed, a lug extends in the connecting and fixing sleeve, a linking cushion block is arranged between the roller center shaft and the connecting and fixing sleeve, the lower end of the linking cushion block is provided with a edgewise clamping groove, the connecting and fixing sleeve and the roller center shaft are in a cavity structure, one end of the roller head shaft shoulder is provided with a sealing end part, the linking cushion block is connected with the roller head shaft shoulder through a positioning pin, the roller head and the roller head shaft shoulder are connected by adopting a fixing mode of screw threads and the positioning pin, because the inner hole of the roller head has no key groove hole, stress concentration is not easy to cause, the roller head shaft shoulder is connected by the positioning pin rather than rigid connection, fatigue crack can be prevented, in addition, the roller head and the roller head shaft shoulder are better in connection sealing performance and stronger in firmness.

Description

Heating furnace cantilever roller head fixing mechanism

Technical Field

The utility model relates to a steel slab rolling's technical field especially involves a fixed establishment of heating furnace cantilever roller head.

Background

At present, the heating furnace cantilever is in the use, because furnace temperature is mostly more than 1000 ℃, the crackle appears along the keyway direction in the roller head often appearing, and the crackle appears in the welding seam under the effect of high temperature and alternating load, causes the roller head to drop, and the leakproofness is not good, causes the phenomenon of equipment damage, adopts the key-type connection to add welded fixed mode usually, and the keyway root is under the effect of thermal stress, very easily produces the crackle.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a heating furnace cantilever roller head fixed establishment that high temperature resistant, stand wear and tear, leakproofness are good, improve product production quality for the steel billet of coming out of the furnace can smoothly carry, and the protection steel billet of coming out of the furnace surface does not have the indenture.

In order to solve the technical problem, the utility model provides a heating furnace cantilever roller head fixed establishment, it includes roller head, roller head shaft shoulder and roller axis, be equipped with on the roller head and connect fixed cover, roller head shaft shoulder and roller axis axial fixity set up in proper order, it has the lug to connect to extend in the fixed cover, the roller axis with connect fixed cover interval and be equipped with and link up the cushion, it is equipped with the edgewise draw-in groove to link up the cushion lower extreme, it is one and puts the cavity structure with the roller axis to connect fixed cover, roller head shaft shoulder one end is equipped with the tip, it is connected through the locating pin with roller head shaft shoulder to link up the cushion, and roller head shaft shoulder adopt the fixed mode of screw thread and locating pin to be connected.

As a further improvement of the utility model, the roller middle shaft extends to the periphery of the roller head shaft shoulder and the extending end of the roller middle shaft is provided with a bending part.

As a further improvement of the utility model, the top of the lug is far away from the periphery of the shaft shoulder of the roller head and is left with a position of 0.2-0.8 cm.

As the utility model discloses a further improvement, roller head and roller head shaft shoulder adopt threaded connection, and it has the connecting pin hole to bore on roller axis and the roller head shaft shoulder, is equipped with the locating pin on the connecting pin hole, roller axis and roller head shaft shoulder are connected through the locating pin.

As a further improvement of the utility model, the thickness range of the shaft shoulder of the roller head is 8cm-15cm, and the inner side of the connecting and fixing sleeve is provided with an arc-shaped groove transition section.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model provides a heating furnace cantilever roller head fixed establishment, it includes roller head, roller head shaft shoulder and roller axis, be equipped with the connection fixed cover on the roller head, roller head shaft shoulder and roller axis set up according to axial fixity, it has the lug to extend in the connection fixed cover, roller axis is equipped with linking cushion with connecting fixed cover interval, linking cushion lower extreme is equipped with the edgewise draw-in groove, it puts the chamber structure to connect fixed cover and roller axis one-tenth, roller head shaft shoulder one end is equipped with seals the tip, linking cushion is connected through the locating pin with roller head shaft shoulder, and roller head shaft shoulder adopt the fixed mode of screw thread and locating pin to connect, adopts the fixed mode of threaded connection with the locating pin, because the roller head hole does not have the key slot hole, is difficult for causing stress concentration, and roller head shaft shoulder adopts the locating pin to connect and non-rigid connection, can prevent that the welding seam from producing fatigue, thereby stopped the roll head and drop the phenomenon, effectively solved the roll head along the problem that the keyway direction appears the crackle, roll head and roll head shaft shoulder are connected the leakproofness better in addition, and the fastness is stronger.

Drawings

Fig. 1 is a schematic structural diagram of the fixing mechanism for the cantilever roller head of the heating furnace of the present invention.

Wherein: 1-roller head, 2-roller head shaft shoulder, 3-roller middle shaft, 4-connecting fixing sleeve, 5-lug, 6-connecting cushion block, 7-edge clamping groove, 8-cavity placing structure, 9-end sealing part, 10-positioning pin, 11-bending part, 12-roller head shaft shoulder and 13-arc groove transition section.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1, a heating furnace cantilever roller head fixing mechanism comprises a roller head 1, a roller head shaft shoulder 2 and a roller center shaft 3, wherein a connecting fixing sleeve 4 is arranged on the roller head 1, the roller head shaft shoulder 2 and the roller center shaft 3 are sequentially and axially fixed, a bump 5 extends in the connecting fixing sleeve 4, and the top of the bump 5 is far away from the periphery of the roller head shaft shoulder 2 and is reserved at a position of 0.2-0.8 cm. The roller center shaft 3 and the connecting and fixing sleeve 4 are provided with a connecting cushion block 6 in an interval, the lower end of the connecting cushion block 6 is provided with a edgewise clamping groove 7, the connecting and fixing sleeve 4 and the roller center shaft 3 are of a cavity structure 8, one end of a roller head shaft shoulder 2 is provided with a sealing end part 9, the connecting cushion block 6 is connected with the roller head shaft shoulder 2 through a positioning pin 10, and the roller head 1 and the roller head shaft shoulder 2 are connected in a fixing mode through threads and the positioning pin. The roller center shaft 3 extends to the periphery of the roller head shaft shoulder 2, and the extending end of the roller center shaft 3 is provided with a bending part 11.

The thickness range of the roller head shaft shoulder 2 is 8cm-15cm, and the inner side of the connecting and fixing sleeve 4 is provided with an arc-shaped groove transition section 13.

When the heating furnace cantilever is used, the temperature of a furnace hearth is more than 1000 ℃, a connecting and fixing sleeve 4 is arranged on a roller head 1, the roller head 1, a roller head shaft shoulder 2 and a roller center shaft 3 are sequentially and axially fixed, a edgewise clamping groove 7 is arranged at the lower end of a linking cushion block 6, the connecting and fixing sleeve 4 and the roller center shaft 3 are in a cavity arrangement structure 8, a welding seam does not crack under the action of high temperature and alternating load, the roller head 1 and the roller head shaft shoulder 2 are in threaded connection, a connecting pin hole 12 is drilled in the roller center shaft 3 and the roller head shaft shoulder 2, a positioning pin 10 is arranged on the connecting pin hole 12, the roller center shaft 3 and the roller head shaft shoulder 2 are connected through the positioning pin 10, and a fixing mode of threaded connection and a positioning pin is adopted, because the inner hole of the roller head has no key slot hole, stress concentration is not easy to cause, the roller head shaft shoulder is connected by the positioning pin rather than rigid connection, fatigue, the problem of roller head crackle along the keyway direction has effectively been solved, and roller head is better with roller head shaft shoulder connection leakproofness in addition, and the fastness is stronger.

The embodiment of the present invention discloses a preferred embodiment, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention according to the above embodiment, and make different extensions and changes, but do not depart from the spirit of the present invention, all of which are within the protection scope of the present invention.

Claims

1. The utility model provides a heating furnace cantilever roller head fixed establishment which characterized in that: it includes roller head (1), roller head shaft shoulder (2) and roller axis (3), be equipped with on roller head (1) and connect fixed cover (4), roller head (1), roller head shaft shoulder (2) and roller axis (3) axial fixity in proper order set up, it has lug (5) to extend in fixed cover (4) to connect, roller axis (3) and the fixed cover (4) interval of being connected are equipped with and link up cushion (6), it is equipped with along limit draw-in groove (7) to link up cushion (6) lower extreme, it puts cavity structure (8) to connect fixed cover (4) and roller axis (3) to be one, roller head shaft shoulder (2) one end is equipped with and seals tip (9), it is connected through locating pin (10) to link up cushion (6) and roller head shaft shoulder (2), and roller head (1) and roller head shaft shoulder (2) adopt the fixed mode of screw thread and locating pin to connect.

2. The heating furnace cantilever roller head fixing mechanism of claim 1, wherein: the roller center shaft (3) extends to the periphery of the roller head shaft shoulder (2), and the extending end of the roller center shaft (3) is provided with a bending part (11).

3. The heating furnace cantilever roller head fixing mechanism of claim 1, wherein: the top of the bump (5) is far away from the periphery of the roller head shaft shoulder (2) and is reserved with a position of 0.2-0.8 cm.

4. The heating furnace cantilever roller head fixing mechanism of claim 1, wherein: the roller head (1) is in threaded connection with the roller head shaft shoulder (2), a connecting pin hole (12) is drilled in the roller center shaft (3) and the roller head shaft shoulder (2), a positioning pin (10) is arranged on the connecting pin hole (12), and the roller center shaft (3) is connected with the roller head shaft shoulder (2) through the positioning pin (10).

5. The heating furnace cantilever roller head fixing mechanism of claim 1, wherein: the thickness range of the roller head shaft shoulder (2) is 8cm-15cm, and an arc-shaped groove transition section (13) is arranged on the inner side of the connecting and fixing sleeve (4).