Anti-loosening device for hot rolling connecting shaft

Abstract

The utility model discloses a hot rolling connecting shaft locking device which comprises an intermediate shaft, a first roller side coupling, a second roller side coupling and a locking assembly, the first roller side coupling is installed on the intermediate shaft, the second roller side coupling is installed on the first roller side coupling, and the locking assembly is installed on the intermediate shaft. The anti-loosening assemblies are installed on the first roller side backrest wheel and the second roller side backrest wheel, multiple sets of anti-loosening assemblies are arranged, multiple sets of first downward-concave wedge-shaped grooves are formed in the first roller side backrest wheel, and each anti-loosening assembly comprises a first anti-loosening cushion block, a first fixing bolt and a nut. The first anti-loosening cushion block is tightly attached to the first roller side backrest wheel and located in the first downwards-concave wedge-shaped groove, the first fixing bolt penetrates through the first anti-loosening cushion block, the first roller side backrest wheel and the second roller side backrest wheel, and the nut is arranged on the first fixing bolt in a threaded connection mode and tightly attached to the second roller side backrest wheel. The utility model relates to the field of use of hot rolling connecting shafts, in particular to an anti-loosening device for a hot rolling connecting shaft.

Description

Technical Field

[0001] The utility model relates to the application field of hot-rolled shaft joints, in particular to a hot-rolled shaft joint anti-loosening device. Background Art

[0002] The working rollers in the rough rolling area of ​​the hot-rolled plate mill are inevitably subjected to large impacts. Due to the impact vibration, the connecting bolts of the roller coupling and the roller assembly are easily fatigued and elongated and fail, which eventually leads to the coupling falling accident. It is necessary to consider adding an anti-loosening device to improve the reliability of the coupling transmission. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the connecting bolts of the roller table shaft coupling and the roller assembly are easily fatigue-elongated and fail due to impact vibration.

[0004] To solve the above problems, the technical solution adopted by the utility model is as follows: the utility model is a hot-rolled shaft anti-loosening device, comprising an intermediate shaft, a first roller side back wheel, a second roller side back wheel and an anti-loosening component, the first roller side back wheel is installed on the intermediate shaft, the second roller side back wheel is installed on the first roller side back wheel, the anti-loosening component is installed on the first roller side back wheel and the second roller side back wheel, the anti-loosening component is provided with multiple groups, the first roller side back wheel is provided with multiple groups of first concave wedge-shaped grooves, the anti-loosening component includes a first anti-loosening pad, a first fixing bolt and a nut, the first anti-loosening pad is tightly attached to the first roller side back wheel and is located in the first concave wedge groove, the first fixing bolt passes through the first anti-loosening pad, the first roller side back wheel and the second roller side back wheel, and the nut is threadedly connected to the first fixing bolt and is tightly attached to the second roller side back wheel.

[0005] Furthermore, an end cover is installed on the first roller side backrest wheel, and a plurality of groups of second concave wedge-shaped grooves are provided on the end cover, and a second anti-loosening pad is placed in the second concave wedge-shaped groove. A second fixing bolt is threadedly connected on the first roller side backrest wheel and the end cover, and the second fixing bolt passes through the second anti-loosening pad.

[0006] The beneficial effects achieved by the utility model using the above structure are as follows:

[0007] 1. Aiming at the problem that the bolts are easily elongated due to fatigue and lead to the failure of the connection between the roller side connecting shaft and the back wheel, the first concave wedge groove and the second concave wedge groove are added, and an anti-loosening pad is provided. The two structures are used together. When the connecting shaft is rotating, the anti-loosening pad moves outward under the action of centrifugal force to compensate for the loose gap caused by the fatigue elongation of the bolts, thereby solving the potential hidden danger of loosening due to the elongation of the bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1This is a schematic diagram of the overall structure of a hot rolling shaft anti-loosening device proposed by the utility model;

[0009] Figure 2 This is a structural schematic diagram of another angle of a hot rolling shaft anti-loosening device proposed by the utility model;

[0010] Figure 3 This is a structural schematic diagram of a first roller side backrest wheel, a second roller side backrest wheel and an anti-loosening assembly of a hot rolling shaft anti-loosening device proposed by the utility model;

[0011] Figure 4 The utility model provides a schematic structural diagram of a first concave wedge-shaped groove and a second concave wedge-shaped groove of a hot-rolled shaft anti-loosening device.

[0012] Among them, 1. intermediate shaft, 2. first roller side backrest wheel, 3. second roller side backrest wheel, 4. anti-loosening assembly, 5. first concave wedge-shaped groove, 6. first anti-loosening pad, 7. first fixing bolt, 8. nut, 9. end cover, 10. second concave wedge-shaped groove, 11. second anti-loosening pad, 12. second fixing bolt. DETAILED DESCRIPTION

[0013] like Figure 1~Figure 4 As shown, the utility model is a hot rolling shaft anti-loosening device, comprising an intermediate shaft 1, a first roller side backrest wheel 2, a second roller side backrest wheel 3 and an anti-loosening component 4, the first roller side backrest wheel 2 is installed on the intermediate shaft 1, the second roller side backrest wheel 3 is installed on the first roller side backrest wheel 2, the anti-loosening component 4 is installed on the first roller side backrest wheel 2 and the second roller side backrest wheel 3, the anti-loosening component 4 is provided with multiple groups, the first roller side backrest wheel 2 is provided with multiple groups of first concave wedge-shaped grooves 5, the anti-loosening component 4 includes a first anti-loosening pad 6, a first fixing bolt 7 and a nut 8, The first anti-loosening pad 6 is tightly attached to the first roller side backrest wheel 2 and is located in the first concave wedge-shaped groove 5. The first anti-loosening pad 6 and the first concave wedge-shaped groove 5 correspond one to one. The first fixing bolt 7 passes through the first anti-loosening pad 6, the first roller side backrest wheel 2 and the second roller side backrest wheel 3. The nut 8 is threadedly connected to the first fixing bolt 7 and is tightly attached to the second roller side backrest wheel 3. The first anti-loosening pad 6 moves outward under the action of centrifugal force to compensate for the loose gap caused by the fatigue elongation of the first fixing bolt 7, thereby solving the potential hidden danger of the first fixing bolt 7 being elongated and loosened.

[0014] An end cover 9 is installed on the first roller side backrest wheel 2, and a plurality of second concave wedge-shaped grooves 10 are provided on the end cover 9. A second anti-loosening pad 11 is placed in the second concave wedge-shaped groove 10. A second fixing bolt 12 is threadedly connected on the first roller side backrest wheel 2 and the end cover 9, and the second fixing bolt 12 passes through the second anti-loosening pad 11.

[0015] During specific use: put the first anti-loosening pad 6 into the first concave wedge-shaped groove 5, tighten the first roller side back wheel 2 and the second roller side back wheel 3 using the first fixing bolt 7 and the nut 8, and install the end cover 9 on the first roller side back wheel 2 using the second fixing bolt 12 and the second anti-loosening pad 11.

[0016] It should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A hot rolling shaft anti-loosening device, characterized in that: The present invention relates to a wheel assembly comprising a first roller side backrest wheel, a second roller side backrest wheel and an anti-loosening assembly, wherein the first roller side backrest wheel is installed on the middle shaft, the second roller side backrest wheel is installed on the first roller side backrest wheel, the anti-loosening assembly is installed on the first roller side backrest wheel and the second roller side backrest wheel, the anti-loosening assembly is provided with multiple groups, the first roller side backrest wheel is provided with multiple groups of first concave wedge-shaped grooves, the anti-loosening assembly comprises a first anti-loosening pad, a first fixing bolt and a nut, the first anti-loosening pad is tightly attached to the first roller side backrest wheel and is located in the first concave wedge-shaped groove, the first fixing bolt passes through the first anti-loosening pad, the first roller side backrest wheel and the second roller side backrest wheel, and the nut is threadedly connected to the first fixing bolt and is tightly attached to the second roller side backrest wheel.

2. The hot rolling shaft anti-loosening device according to claim 1, characterized in that: An end cover is installed on the first roller side backrest wheel, and a plurality of second concave wedge-shaped grooves are provided on the end cover, and a second anti-loosening pad is placed in the second concave wedge-shaped groove. A second fixing bolt is threadedly connected on the first roller side backrest wheel and the end cover, and the second fixing bolt passes through the second anti-loosening pad.

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