CN201735604U

CN201735604U - Worm gear for adjusting rolling guide and guard device

Info

Publication number: CN201735604U
Application number: CN2010202014665U
Authority: CN
Inventors: 王静; 朱年松; 董建超; 马宝国; 陆云; 尹辉
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baosteel Special Steel Co Ltd
Priority date: 2010-05-21
Filing date: 2010-05-21
Publication date: 2011-02-09
Anticipated expiration: 2020-05-21

Abstract

The utility model discloses a worm gear for adjusting a rolling guide and guard device, which comprises a worm gear main body and a connection plate, wherein a pillar-shaped counter bore is formed at the end part of the worm gear; a circle of inner teeth are formed inside the pillar-shaped counter bore; and a circle of outer teeth meshed with the inner teeth are formed at one end of the connection plate, and two positioning projections are formed on the other end. The worm gear for adjusting the rolling guide and guard device effectively lowers maintenance cost of the worm gear, reduces maintenance difficulty, and enables the maintenance to be simpler and more convenient.

Description

A kind of worm gear that is used for the rolling guide adjustment

Technical field

The utility model relates to the inlet rolling guide of metallurgy industry bar production tandem mill, particularly a kind of worm gear that is used for the rolling guide adjustment.

Background technology

Rolling guide is an auxiliary equipment common in the metallurgy industry bar production, accurately enters the roll pass of tandem mill for guaranteeing the metal rolled piece, and the rolling guide supporting with the continuous rolling mill roller pass is indispensable auxiliary equipment.

The structure of the rolling guide that existing and continuous rolling mill roller pass is supporting is: be provided with 1～2 group of guide wheel near the roll pass place, every group of guide wheel is made up of two size guide wheels identical or different, the layout of existing side by side, keep certain spacing between two guide wheels on the same group, its spacing and roll pass coupling, the gap of metal rolled piece between two guide wheels of rolling guide enters the roll pass of rolling mill.

For guaranteeing the correct guidance of rolling guide, need to adjust the spacing between two guide wheels, make it reasonable with the roll pass coupling, the spacing of two guide wheels of rolling guide is adjusted by worm-and-wheel gear, worm gear is installed in the end of an eccentric shaft, the guide wheel of rolling guide is installed in the eccentric part of described eccentric shaft, when adjusting, rotation by worm screw drives rotation, because worm gear and described guide wheel are contained on the same eccentric shaft, two guide wheel correspondences be the worm gear of different rotary direction, therefore, worm gear will drive guide wheel and carry out the spacing adjustment.

The conventional worm gear and the connected mode of its rotating shaft are to adopt to offer keyway on the centre bore of worm gear, circumferentially locate by key, but above-mentionedly be used for worm gear that rolling guide adjusts because working environment is more abominable, for preventing that the junction that impurity such as iron scale enter worm gear and eccentric shaft from causing worm gear and eccentric shaft to damage, must the end of worm gear and eccentric shaft junction be sealed, therefore do not adopt conventional connected mode, Fig. 1 is the existing schematic diagram that is used for the worm gear of rolling guide adjustment, wherein (a) is the structural representation of worm gear, (b) be the left view of (a), Fig. 2 is the schematic diagram of the connected mode of worm gear and eccentric shaft among Fig. 1.As illustrated in fig. 1 and 2, the end of the body 100 of the existing worm gear that is used for the rolling guide adjustment is provided with two locating convex blocks 101, and the end of opposite side is provided with the seal groove 102 that sealing ring is installed on centre bore.Eccentric shaft 200 passes the centre bore of worm gear 100, is being provided with the shoulder 201 of flat with two locating convex block 101 cooperation places, and shoulder 201 is stuck between two locating convex blocks 101 worm gear 100 is circumferentially located.The worm gear 100 of employing said structure in use, worm gear 100 rotates two locating convex blocks 101 that cause 200 pairs of worm gear 100 ends of eccentric shaft and produces moment of torsion, two locating convex blocks 101 can be damaged, cause worm gear 100 to scrap, the worm gear that must more renew, this worm gear that damages is disassembled, make maintenance cost very high, and maintenance difficulty is big.

The utility model content

For addressing the above problem, the utility model provides a kind of worm gear that rolling guide is adjusted that is used for, and reduces the maintenance cost of worm gear.

For achieving the above object, the worm gear that is used for the rolling guide adjustment of the present utility model comprises worm gear body and terminal pad, and the end of described worm gear body is provided with the cylindricality counterbore, is provided with a circle internal tooth in the described cylindricality counterbore; One end of described terminal pad is provided with the external tooth of a circle and the engagement of described internal tooth, and the other end is provided with two locating convex blocks.

Described terminal pad is fixed on the described worm gear body by screw.

Be used for the worm gear that rolling guide is adjusted by of the present utility model, effectively reduce the maintenance cost of worm gear, the maintenance difficulty that has reduced simultaneously makes maintenance easier.

Description of drawings

Fig. 1 is the existing schematic diagram that is used for the worm gear of rolling guide adjustment, and wherein (a) is the structural representation of worm gear, (b) is the left view of (a);

Fig. 2 is the schematic diagram of the connected mode of worm gear and eccentric shaft among Fig. 1;

Fig. 3 is the structural representation that is used for the preferred embodiment of the worm gear that rolling guide adjusts of the present utility model;

Fig. 4 is that the A-A of worm gear among Fig. 3 is to cutaway view;

Fig. 5 is the schematic diagram of worm gear body among Fig. 3, and wherein (a) is worm gear main body structure schematic diagram, (b) is the left view of (a);

Fig. 6 is the schematic diagram of terminal pad among Fig. 4, and wherein (a) is the structural representation of terminal pad, (b) is the left view of (a);

Fig. 7 is the schematic diagram of the connected mode of worm gear and eccentric shaft among Fig. 4.

The specific embodiment

Shown in Fig. 3～6, the worm gear that is used for the rolling guide adjustment of the present utility model comprises worm gear body 10 and terminal pad 20, and the end of described worm gear body 10 is provided with cylindricality counterbore 11, is provided with a circle internal tooth 12 in the described cylindricality counterbore 11; One end of described terminal pad 20 is provided with the external tooth 22 of a circle and 12 engagements of described internal tooth, and the other end is provided with two locating convex blocks 21.Two locating convex blocks 21 are used for the circumferential location that is used for the worm gear of rolling guide adjustment of the present utility model.

Firm for guaranteeing that worm gear body 10 is connected with terminal pad 20, described terminal pad 20 is fixed on the described worm gear body 10 by screw 30.

Referring to shown in Figure 7, the worm gear that is used for the rolling guide adjustment of the present utility model is when being connected with eccentric shaft 200, and shoulder 201 is stuck between two locating convex blocks 21 worm gear of the present utility model is circumferentially located.

The worm gear that is used for the rolling guide adjustment of the present utility model adopts split type structure, can change terminal pad 20 when two locating convex blocks 21 damage, and can finish reparation under the situation of not exclusively opening worm gear.

Claims

1. one kind is used for the worm gear that rolling guide is adjusted, and it is characterized in that comprise worm gear body and terminal pad, the end of described worm gear body is provided with the cylindricality counterbore, is provided with a circle internal tooth in the described cylindricality counterbore; One end of described terminal pad is provided with the external tooth of a circle and the engagement of described internal tooth, and the other end is provided with two locating convex blocks.

2. the worm gear that is used for the rolling guide adjustment as claimed in claim 1 is characterized in that described terminal pad is fixed on the described worm gear body by screw.