Longitudinal support beam tensioning device for push-steel heating furnace

Abstract

The utility model discloses a tensioning device for a longitudinal support beam of a push-steel heating furnace. A longitudinal support beam is arranged in the heating furnace, and a loading roller for conveying steel billets is arranged on the outside of the entrance of the heating furnace. The loading roller comprises an inner roller base, an outer roller base and a plurality of rollers, and the inner roller base and the outer roller base are installed on the roller base. A connecting plate is fixedly connected to the bottom of the outer end of the longitudinal support beam, and the connecting plate is connected to the inner end of the adjusting rod through a connecting assembly. The adjusting rod is arranged horizontally, and the outer end of the adjusting rod passes through the inner roller base and the outer roller base. A pad is provided on the adjusting rod sleeve on the outer side of the outer roller base, and the inner plate surface of the pad abuts against the outer roller base. An adjusting nut is screwed on the adjusting rod on the outer side of the pad. The adjusting rod passes through the loading roller, and the pad and the adjusting nut are behind the roller. The operating space is large, the operating environment temperature is low, and the operation is convenient. It is convenient for the heating furnace to adjust the tensioning device in different states, improve work efficiency, and improve the operating environment.

Description

Technical Field

[0001] The utility model relates to a push-steel type heating furnace, in particular to a tensioning device for a longitudinal support beam of the push-steel type heating furnace. Background Art

[0002] For a push-steel heating furnace, the steel billet is heated after being pushed into the furnace by a steel pusher arranged at the end of the heating furnace. In the process of the steel billet moving toward the furnace head of the heating furnace, the steel billet will generate friction with the longitudinal support beam in the heating furnace, causing the longitudinal support beam to move forward. In order to limit the free forward movement of the longitudinal support beam, a tensioning device is designed at the furnace entrance end of the heating furnace. Most existing tensioning devices use oblique tensioning, and the force point of the tensioning device is set on the roller foundation. When the heating furnace is feeding, the tensioning device is stressed. After the feeding is completed, the heating furnace heats up and the longitudinal beam expands due to heat (the expansion distance varies according to the length of the longitudinal support beam). Due to structural limitations, the adjustment structure is below the steel billet. At the same time, the temperature here is relatively high. If there is no adjustment measure on site, the tensioning device will be bent under the reverse force and eventually fail. The Chinese utility model with the authorization announcement number CN208155063U discloses an automatic width adjustment mechanism for the beam of a heating furnace. The utility model does not need to adjust the longitudinal length of the beam. Utility Model Content

[0003] The utility model aims to solve the above technical problems, thereby providing a longitudinal support beam tensioning device for a push-steel heating furnace which is easy to operate.

[0004] The utility model solves the technical problem and adopts the following technical solution:

[0005] A longitudinal support beam tensioning device for a push-steel heating furnace, wherein a longitudinal support beam is arranged in the heating furnace, and a loading roller for conveying steel billets is arranged on the outer side of the heating furnace entrance, wherein the loading roller comprises an inner roller base, an outer roller base and a plurality of rollers, wherein the inner roller base and the outer roller base are installed on the roller base.

[0006] A connecting plate is fixedly connected to the bottom of the outer end of the longitudinal support beam, and the connecting plate is connected to the inner end of the adjusting rod through a connecting assembly. The adjusting rod is arranged horizontally, and the outer end of the adjusting rod passes through the inner roller base and the outer roller base. A pad is provided on the adjusting rod sleeve on the outer side of the outer roller base, and the inner plate surface of the pad is in contact with the outer roller base. An adjusting nut is screwed on the adjusting rod on the outer side of the pad.

[0007] Compared with the prior art, the utility model adopting the above technical solution has the following beneficial effects:

[0008] The structure is simple, the adjusting rod passes through the loading roller, the pad and the adjusting nut are behind the roller, the operating space is large, the operating environment temperature is low, and it is easy to operate. It is convenient to adjust the tensioning device of the heating furnace under different conditions, so as to effectively tighten and fix the longitudinal support beam in the heating furnace, improve work efficiency and improve the operating environment.

[0009] Further, the optimization scheme of the utility model is:

[0010] The connecting assembly comprises an ear seat and a pin shaft. A circular hole is opened on the connecting plate. The inner end of the ear seat is connected to the circular hole through the pin shaft, and the outer end of the ear seat is fixedly connected to the adjusting rod.

[0011] A support plate is provided on the inner side of the pad, and the support plate is located on both sides of the adjusting rod, and two ends of the support plate respectively abut against the web plate and the pad of the outer roller table base.

[0012] A limiting seat is arranged on the inner side of the outer roller table base. The limiting seat is triangular in shape. The horizontal portion of the limiting seat is fixedly connected to the roller table foundation, and the vertical portion of the limiting seat abuts against the inner side surface of the outer roller table base.

[0013] The limit seat is connected to the roller table foundation through pre-buried anchor bolts.

[0014] The adjusting rod passes through the vertical portion of the limiting seat.

[0015] It also includes a support beam elongation compensation tensioning structure, which includes an eccentric pressure plate, a handle, an upper ear seat, a lower ear seat, an ear plate and an external pressure rod. The outer end of the adjusting rod is provided with a radial through-hole, and the roller foundation below the hole is installed with a lower ear seat, the ear plate is hinged to the lower ear seat, the upper part of the ear plate is detachably connected to the external pressure rod, the upper end of the external pressure rod passes through the socket of the adjusting rod and extends to the top of the outer roller base, the upper part of the outer roller base is fixedly connected to the upper ear seat, the eccentric pressure plate is hinged to the upper ear seat, the outer circumferential surface of the eccentric pressure plate abuts against the external pressure rod, and the eccentric pressure plate is installed with a radial handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the first embodiment of the utility model;

[0017] Figure 2 for Figure 1 Side view of

[0018] Figure 3 It is the front view of the ear seat;

[0019] Figure 4 for Figure 3 AA section view;

[0020] Figure 5 It is the front view of the adjustment rod;

[0021] Figure 6 It is the main view of the limit seat;

[0022] Figure 7 This is a schematic diagram of the second embodiment of the present utility model.

[0023] In the figure: heating furnace 1; longitudinal support beam 2; feeding roller 3; inner roller base 3-1; outer roller base 3-2; roller 3-3; bearing seat 3-4; roller foundation 4; connecting plate 5; ear seat 6; pin 7; adjusting rod 8; pad 9; adjusting nut 10; support plate 11; limit seat 12; embedded anchor bolt 13; eccentric pressure plate 14; handle 15; upper ear seat 16; lower ear seat 17; ear plate 18; external pressure rod 19. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Embodiment 1

[0026] See also Figure 1-Figure 6 This embodiment provides a longitudinal support beam tensioning device for a push-steel heating furnace, which is mainly composed of a connecting plate 5, an ear seat 6, a pin shaft 7, an adjusting rod 8, a pad 9 and an adjusting nut 10. A plurality of longitudinal support beams 2 are arranged in the heating furnace 1, and a loading roller 3 for conveying steel billets is arranged on the outer side of the entrance of the heating furnace 1. The loading roller 3 is composed of an inner roller base 3-1, an outer roller base 3-2, a roller 3-3 and a bearing seat 3-4. The inner roller base 3-1 and the outer roller base 3-2 are perpendicular to the longitudinal support beam 2. The materials of the inner roller base 3-1 and the outer roller base 3-2 are both H-shaped steel, and the web of the H-shaped steel is arranged vertically. The two ends of the roller shaft of the roller 3-3 are rotatably connected with the inner roller base 3-1 and the outer roller base 3-2 through the bearing seat 3-4, respectively. The inner roller base 3-1 and the outer roller base 3-2 are installed on the roller foundation 4.

[0027] A rectangular connecting plate 5 is welded to the bottom of the outer end of the longitudinal support beam 2. The connecting plate 5 is provided with a circular hole. The connecting plate 5 is connected to the adjusting rod 8 through a connecting assembly. The connecting assembly is composed of an ear seat 6 and a pin 7. The ear seat 6 is connected to the circular hole of the connecting plate 5 through the pin 7. The outer end of the ear seat 6 is threaded or welded to the adjusting rod 8. The adjusting rod 8 is arranged horizontally and has an external thread at the outer end. The outer end of the adjusting rod 8 passes through the webs of the inner roller base 3-1 and the outer roller base 3-2 in sequence and then extends to the outer side of the outer roller base 3-2. The adjusting rod 8 on the outer side of the outer roller base 3-2 is sleeved with a rectangular pad 9. The inner plate surface of the pad 9 abuts against the outer end surface of the flange plate of the outer roller base 3-2. The adjusting rod 8 on the outer side of the pad 9 is screwed with an adjusting nut 10. The adjusting nut 10 is tightened, the backing plate 9 limits the axial position of the adjusting nut 10 , the adjusting nut 10 rotates, the adjusting rod 8 moves outward, and the adjusting rod 8 tightens the longitudinal support beam 2 through the ear seat 6 , the pin shaft 7 and the connecting plate 5 .

[0028] In order to prevent the pad 9 from deformation, a support plate 11 is provided on the inner side of the pad 9. The support plates 11 are two and are respectively located on both sides of the adjusting rod 8. The plate surface of the support plate 11 is arranged vertically. The two ends of the support plate 11 respectively abut the web of the outer roller base 3-2 and the pad 9. The outer end of the support plate 11 can also be welded to the pad 9. The two support plates 11 improve the rigidity and strength of the pad 9.

[0029] In order to improve the stability of the outer roller bed 3-2 and prevent it from displacement, a limit seat 12 is provided on the inner side of the outer roller bed 3-2. The limit seat 12 is triangular, and a rib is welded between the horizontal part and the vertical part of the limit seat 12. The adjustment rod 8 passes through the vertical part of the limit seat 12. The horizontal part of the limit seat 12 is fixedly connected to the roller bed foundation 4 by the embedded anchor bolts 13, and the vertical part of the limit seat 12 abuts against the inner side of the outer roller bed 3-2, and the limit seat 12 limits the outer roller bed 3-2.

[0030] The operation process of this embodiment is: when the heating furnace is cold, the adjusting nut 10 of the tensioning device is tightened. When the heating furnace is finished, the longitudinal support beam 2 is heated and stretched, and the tensioning device becomes loose. In this state, the adjusting nut 10 is tightened again. Anti-loosening measures can also be used to lock the adjusting nut 10 to avoid the phenomenon that the adjusting nut 10 is loosened due to vibration during normal production of the heating furnace 1. When the heating furnace 1 is stopped and cooled, the adjusting nut 10 needs to be loosened in time to avoid damage to the longitudinal support beam 2 due to the shrinkage of the longitudinal support beam 2. Embodiment 2

[0031] See also Figure 7The adjusting rod 8 is provided with a supporting beam elongation compensation tensioning structure, which is mainly composed of an eccentric pressure plate 14, a handle 15, an upper ear seat 16, a lower ear seat 17, an ear plate 18 and an external pressure rod 19. A radially through-hole is provided at the outer end of the adjusting rod 8, and a lower ear seat 17 is provided below the hole. The lower ear seat 17 is fixedly connected to the roller table foundation 4 through an expansion bolt, and the ear plate 18 is hinged to the lower ear seat 17 through a connecting pin. The upper part of the ear plate 18 is connected to the external pressure rod 19 through a bolt. The cross section of the external pressure rod 19 is rectangular, and the upper end of the external pressure rod 19 passes through the jack of the adjusting rod 8 and extends to the top of the outer roller table base 3-2. An upper ear seat 16 is welded to the upper part of the outer roller base 3-2, and the upper ear seat 16 is inverted L-shaped. The eccentric pressure plate 15 is hinged to the upper ear seat 16 through an axle pin. The outer circumferential surface of the eccentric pressure plate 15 abuts against the inner side of the upper part of the outer pressure rod 19, and the eccentric pressure plate 14 is equipped with a radial handle 15.

[0032] After tightening the adjusting nut 10 of the tensioning device, press the handle 15 downward, the eccentric pressure plate 14 rotates, and the eccentric pressure plate 14 tightens the adjusting rod 8 through the external pressure rod 19 and the insertion hole, playing an auxiliary tightening role. When the heating furnace 1 is heated for a long time and the furnace temperature is too high, the elongation of the longitudinal support beam 2 will increase. At this time, a gap will be generated between the outer side of the external pressure rod 19 and the outer hole wall of the insertion hole of the adjusting rod 8. Under the action of gravity, the eccentric pressure plate 14 and the handle 15 rotate downward by a certain angle, and the external pressure rod 19 swings outward, so that the eccentric pressure plate 14 always tightens the external pressure rod 19 to prevent the adjusting rod 8 from loosening.

[0033] The utility model has a large operating space, a good operating environment and is easy to operate, thereby truly realizing effective fixation of the longitudinal support beam.

[0034] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A longitudinal support beam tensioning device for a push-steel heating furnace, wherein a longitudinal support beam is arranged in the heating furnace, and a loading roller for conveying steel billets is arranged outside the entrance of the heating furnace, wherein the loading roller comprises an inner roller base, an outer roller base and a plurality of rollers, wherein the inner roller base and the outer roller base are installed on a roller base, and wherein the device is characterized in that: A connecting plate is fixedly connected to the bottom of the outer end of the longitudinal support beam, and the connecting plate is connected to the inner end of the adjusting rod through a connecting assembly. The adjusting rod is arranged horizontally, and the outer end of the adjusting rod passes through the inner roller base and the outer roller base. A pad is provided on the adjusting rod sleeve on the outer side of the outer roller base, and the inner plate surface of the pad is in contact with the outer roller base. An adjusting nut is screwed on the adjusting rod on the outer side of the pad.

2. The longitudinal support beam tensioning device of a pusher type heating furnace according to claim 1 is characterized in that: The connecting assembly comprises an ear seat and a pin shaft. A circular hole is opened on the connecting plate. The inner end of the ear seat is connected to the circular hole through the pin shaft, and the outer end of the ear seat is fixedly connected to the adjusting rod.

3. The longitudinal support beam tensioning device of a pusher type heating furnace according to claim 1 is characterized in that: A support plate is provided on the inner side of the pad, and the support plate is located on both sides of the adjusting rod, and two ends of the support plate respectively abut against the web plate and the pad of the outer roller table base.

4. The longitudinal support beam tensioning device of a pusher type heating furnace according to claim 1, characterized in that: A limiting seat is arranged on the inner side of the outer roller table base. The limiting seat is triangular in shape. The horizontal portion of the limiting seat is fixedly connected to the roller table foundation, and the vertical portion of the limiting seat abuts against the inner side surface of the outer roller table base.

5. The longitudinal support beam tensioning device of a pusher type heating furnace according to claim 4 is characterized in that: The limit seat is connected to the roller table foundation through pre-buried anchor bolts.

6. The longitudinal support beam tensioning device of a pusher type heating furnace according to claim 4, characterized in that: The adjusting rod passes through the vertical portion of the limiting seat.

7. The longitudinal support beam tensioning device of a pusher type heating furnace according to claim 1, characterized in that: It also includes a support beam elongation compensation tensioning structure, which includes an eccentric pressure plate, a handle, an upper ear seat, a lower ear seat, an ear plate and an external pressure rod. The outer end of the adjusting rod is provided with a radial through-hole, and the roller foundation below the hole is installed with a lower ear seat, the ear plate is hinged to the lower ear seat, the upper part of the ear plate is detachably connected to the external pressure rod, the upper end of the external pressure rod passes through the socket of the adjusting rod and extends to the top of the outer roller base, the upper part of the outer roller base is fixedly connected to the upper ear seat, the eccentric pressure plate is hinged to the upper ear seat, the outer circumferential surface of the eccentric pressure plate abuts against the external pressure rod, and the eccentric pressure plate is installed with a radial handle.

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