CN203868103U

CN203868103U - Guide pulley device

Info

Publication number: CN203868103U
Application number: CN201420160917.3U
Authority: CN
Inventors: 沈康
Original assignee: Baosteel Special Steel Co Ltd
Current assignee: Baosteel Special Steel Co Ltd
Priority date: 2014-04-03
Filing date: 2014-04-03
Publication date: 2014-10-08
Anticipated expiration: 2024-04-03

Abstract

The utility model provides a guide pulley device, which comprises a roller, a hinge pin, two bearings, two positioning sleeves, two glands, two backing plates and a bracket, wherein the two bearings are mounted in shoulder holes in the two ends of the roller respectively; the two positioning sleeves are propped against the outer ends of the inner rings of the bearings respectively; the two glands are arranged on the positioning sleeves in a sleeving manner and fixedly connected with the two ends of the roller through bolts; each backing plate is adjoined with the inner end of the outer ring of the corresponding bearing and mounted in the shoulder hole of the corresponding bearing; the hinge pin penetrates through the bracket, the positioning sleeves, the bearing inner rings, through holes of the backing plates and a through hole of the roller and is fixedly connected with the bracket. According to the guide pulley device, as the backing plates are arranged, the external force directly acts on the bearing outer rings, no interlayer is needed for force transmission, the completeness of the bearings are effectively guaranteed when the bearings are disassembled; when the bearing inner rings and a holding rack are flaking off, the stress area for disassembling the bearing outer rings is increased and the disassembly of the bearing outer rings is facilitated.

Description

Guide wheel device

Technical field

The utility model relates to a kind of guiding device for Ferrous Metallurgy equipment, relates to specifically a kind of guide wheel device for Ferrous Metallurgy equipment.

Background technique

In many occasions of iron and steel metallurgical industry, generally all can adopt the equipment that guide wheel device is installed, for example upper saw pulley of the loading and unloading platform on dummy bar upper saw pulley, the sharpening machine on casting machine.By the setting of upper saw pulley, relevant device is moved along the track of upper saw pulley.

Existing guide wheel device, as shown in Figure 1, is generally to be assemblied by bearing pin 1, setting sleeve 2, bolt 3, gland 4, bearing 5, running roller 6, support 7, and running roller 6 contacts with directional post 8, drives the part on support 7 to move.Any parts depreciation will be changed after reaching certain standard, and under normal circumstances, running roller 6 is faster than the rate of wear of bearing 5, and when running roller 6 may wear to need to change time, bearing 5 generally not yet reaches wearing and tearing standard.In order to improve the utilization efficiency of bearing, save device maintenance expense, bearing need to be pulled down to recycling, to reduce cost of equipment maintenance.

Adopt the assembly structure of existing upper saw pulley, in the time of dismounting bearing 5, as shown in Figure 2, it is generally the mode that adopts copper rod 10 to knock the inner ring 54 of bearing 5, after bearing inner race 54 is stressed, by ball 52 and retainer 53, external force is passed to bearing outer ring 52, after bearing outer ring 52 is stressed, from the interior surface of contact 6a of running roller 6, progressively separate again, thereby make whole bearing 5 depart from running roller 6.Adopt this method for dismounting, outer ring 51, inner ring 54, ball 52 and the retainer 53 of bearing 5 all will be subject to impact force, and especially ball 52 and retainer 53 easily damage.

In addition, in existing upper saw pulley assembly structure, for bearing 5 is carried out to axial restraint, in running roller 6, be processed with a shaft shoulder 6b, as shown in Figure 2, the size of shaft shoulder 6b is slightly larger than the internal diameter size of bearing outer ring 51, and its concrete numerical value is to determine according to the respective specified of country and relevant industries.The size of bearing 5 is less, the internal diameter size difference of the size of shaft shoulder 6b and bearing outer ring 51 is less, taking 6208 bearings commonly used as example, both differences are only 4.5mm, that is to say when coming off from bearing after retainer 53 and ball 52 damages, can only knock bearing outer ring 51, and effective stress surface of bearing outer ring 51 only has the width of 2.25mm.Therefore operator are difficult to removing damaged bearing.

Due to the existence of above-mentioned two kinds of problems, make to occur in actual use two kinds of disadvantageous situations, one, in the time of the bearing of having dismantled, because of bearing inner race 54, ball 52, the stressed excessive bearing damage making of retainer 53; Its two, owing to cannot tearing the running roller 6 making in situation open and scrap together with bad bearing 5 in the outer ring 51 of bad bearing.

Need to design a kind of new wheel design for this reason, make assembly structure will meet specification, can reach national sector standard, facilitate again bearing removal.

Summary of the invention

The purpose of this utility model is a kind of guide wheel device of design, can dismantle safely, easily bearing, meets the requirement of national regulation simultaneously.

A kind of guide wheel device of the present utility model, comprise running roller, bearing pin, bearing, setting sleeve, gland, support, two bearings are arranged on respectively in the shoulder hole at running roller two ends, two setting sleeves are kept out respectively the inner ring outer end of bearing, two glands are set on setting sleeve and by bolt and are fixedly connected with running roller two ends, also comprise two backing plates, each backing plate and described corresponding axis bearing outer-ring are inner adjacent and be arranged in the shoulder hole of described corresponding bearing, described bearing pin is through support, setting sleeve, bearing inner race, the through hole of backing plate is fixedly connected with the through hole of running roller and with support.

The profile of described running roller is " V " font for its longitudinal cross-section, to match with directional post.

Described backing plate is circular plate, backing plate is formed with adjacent a through hole and a shoulder hole, the diameter in described shoulder hole is greater than the diameter of through hole, the external diameter of backing plate equals the external diameter of corresponding bearing, the slightly larger in diameter of the through hole of backing plate is in the internal diameter of the inner ring of corresponding bearing, and the diameter in the shoulder hole of backing plate equals the internal diameter of corresponding shaft bearing outer-ring; The exterior edge face that is formed with shoulder hole of backing plate and described bearing outer ring the inner connect, and the shoulder end face in the shoulder hole that the interior edge face that is formed with through hole of backing plate and running roller form connects.

Guide wheel device of the present utility model can improve the serviceability rate of bearing removal, and dismounting bearing convenient, simple in structure, expense is cheap, easy to make.

Brief description of the drawings

Fig. 1 is the structural representation of existing guide wheel device;

Fig. 2 is the schematic diagram of bearing in the running roller of the existing guide wheel device of dismounting;

Fig. 3 is the structural representation of an embodiment's of the utility model guide wheel device;

Fig. 4 is the structural representation after running roller, bearing and the backing plate assembling in Fig. 3 embodiment;

Fig. 5 is the schematic diagram of the bearing in the utility model guide wheel device middle roll of removing in Fig. 3 and Fig. 4;

Fig. 6 a is the plan view of the backing plate in embodiment illustrated in fig. 3;

Fig. 6 b is the sectional view along A-A dissects in Fig. 6 a.

Embodiment

For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.First it should be noted that, the utility model is not limited to following embodiment, the spirit that those skilled in the art should embody from following mode of execution is understood the utility model, and each technical term can be done the most wide in range understanding based on Spirit Essence of the present utility model.In figure, same or analogous member uses the same reference numerals to represent.

As shown in Figure 3, an embodiment's of the utility model guide wheel device, comprise running roller 6, bearing pin 1, two bearings 5, two setting sleeves 2, two glands 4, support 7, roller profile is " V " font for its longitudinal cross-section, to match with directional post 8, running roller 6 is formed with through hole 6c and is formed on the shoulder hole 6d of its opposite end, two bearings 5 are arranged on respectively in the shoulder hole 6d at two ends of running roller 6, setting sleeve 2 is kept out respectively the outer end of the inner ring 54 of bearing 5, gland 4 is set in respectively on setting sleeve 2 and by bolt 3 and is combined with the two ends of running roller 6, also comprise two backing plates 9, backing plate 9 is circular plate, each backing plate is formed with adjacent a through hole 93 and a shoulder hole 92, the external diameter of backing plate equal corresponding bearing 5 external diameter, the slightly larger in diameter of the through hole 93 of backing plate is in the internal diameter of the inner ring of corresponding bearing, the diameter in the shoulder hole 92 of backing plate equals the internal diameter of corresponding shaft bearing outer-ring 51, the exterior edge face with shoulder hole 92 of backing plate and the inner of described bearing outer ring 51 connect, the shoulder end face of the shoulder hole 6d of the interior edge face with through hole 93 of backing plate and running roller connects, so that the inner of this two backing plates 9 and bearing outer ring 51 is adjacent and be arranged in the shoulder hole 6d of bearing, bearing pin 1 is fixedly connected with running roller and with support 7 through support 7, setting sleeve 2, bearing inner race 54, backing plate.

The profile of running roller 6 is V-shaped, and this shape is conducive to guiding, utilizes the hypotenuse of " V " type both sides to carry out limiting displacement, realizes leading role.

The diameter in the external diameter 91 of circular shim and through hole 93, shoulder hole 92 is determined according to used bearing.The external diameter 91 of circular shim equals the external diameter of bearing 5, and the slightly larger in diameter of through hole 92 is in the internal diameter of bearing, and the diameter in shoulder hole 93 is the internal diameter of bearing outer ring 51.The effect in through hole 93, shoulder hole 92 is to form a shaft shoulder 91 ' bearing 5 is carried out to axially support, and arranging of through hole 93 can avoid the part such as inner ring, retainer 53 of bearing 5 to touch backing plate 9 simultaneously.According in NBS, the size of the shaft shoulder is greater than the internal diameter of the outer ring 51 of bearing 5, but is less than the external diameter of bearing outer ring 51, is generally the half of bearing outer ring width.By the setting of the backing plate 9 in the utility model, realized the function of the shaft shoulder by shoulder hole 92, the shaft shoulder width forming just equals the width of bearing outer ring simultaneously, than the effective axially support ability that promoted of original structure.

When installation, refer to Fig. 3, Fig. 4, first backing plate 9 is put into running roller 6, notice that shoulder hole 92 is positioned at outside, through hole 93 is positioned at inner side.And then bearing 5 is installed, and then gland 4 is installed, gland 4 is fixed with bolt 3.The running roller assembling 6 is put into support 7, load onto setting sleeve 2, then load onto bearing pin 1, realize the installation completely of guide wheel device.

In the time of dismounting, refer to Fig. 3, Fig. 5, first remove bearing pin 1 and setting sleeve 2, take out the running roller 6 assembling, then remove bolt 3, gland is taken out.Then copper rod 10 is withstood to the plane of backing plate, utilize iron hammer to knock copper rod 10, external force passes to backing plate 9 by copper rod 10, backing plate 9 again by masterpiece for the outer ring 51 of bearing 4, bearing outer ring 51 can spin off after overcoming the frictional force of the interior shoulder of running roller 6 hole 6d from running roller 6.The utility model structure is by the setting of backing plate, first make external force directly act on bearing outer ring, and the transmission of power layer by layer in the middle of not needing, saving from damage bearing while effectively ensureing bearing dismounting, secondly, in the time that bearing inner race and retainer come off, improve the lifting surface area of removing bearing outer ring, facilitate bearing outer ring dismounting.

The bearing 5 that uses the utility model successfully to solve guide wheel device is dismantled the problem of serviceability rate, has improved service life of equipment, reduces device maintenance expense

Should be understood that those skilled in the art can make various changes or modifications the utility model after having read above-mentioned instruction content of the present utility model, these equivalent form of values fall within the application's appended claims limited range equally.

Claims

1. a guide wheel device, comprise running roller, bearing pin, two bearings, two setting sleeves, two glands, support, two bearings are arranged on respectively in the shoulder hole at running roller two ends, two setting sleeves are kept out respectively the inner ring outer end of bearing, two glands are set on setting sleeve and by bolt and are fixedly connected with running roller two ends, it is characterized in that, also comprise two backing plates, each backing plate and described corresponding axis bearing outer-ring are inner adjacent and be arranged in the shoulder hole of described corresponding bearing, described bearing pin is through support, setting sleeve, bearing inner race, the through hole of backing plate is fixedly connected with the through hole of running roller and with support.

2. guide wheel device according to claim 1, is characterized in that, the profile of described running roller is " V " font for its longitudinal cross-section, to match with directional post.

3. guide wheel device according to claim 1, it is characterized in that, described backing plate is circular plate, backing plate is formed with adjacent a through hole and a shoulder hole, the diameter in described shoulder hole is greater than the diameter of through hole, the external diameter of backing plate equals the external diameter of corresponding bearing, and the slightly larger in diameter of the through hole of backing plate is in the internal diameter of the inner ring of corresponding bearing, and the diameter in the shoulder hole of backing plate equals the internal diameter of corresponding shaft bearing outer-ring; The exterior edge face that is formed with shoulder hole of backing plate and described bearing outer ring the inner connect, and the shoulder end face in the shoulder hole that the interior edge face that is formed with through hole of backing plate and running roller form connects.