CN210162687U

CN210162687U - Novel belt conveyor tapered roller bearing roller

Info

Publication number: CN210162687U
Application number: CN201920524549.9U
Authority: CN
Inventors: 温伟杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2020-03-20
Anticipated expiration: 2029-04-17

Abstract

A novel tapered roller bearing carrier roller of a belt conveyor is used for a carrier roller matched with a general belt conveyor. The bearing adopts a tapered roller bearing, and the bearing seat and the bearing and the shaft are directly and rigidly positioned and installed, so that the bearing can bear larger axial force. The inner sealing ring (12) and the inner retainer ring (18) and the outer sealing ring (14) and the outer retainer ring (17) which are optimally designed can be independently positioned and installed, fatigue damage caused by axial force is avoided, and meanwhile, the VD-shaped rubber sealing ring (20) is arranged between the inner retainer ring (18) and the outer retainer ring (17), so that a better waterproof effect can be achieved.

Description

Novel belt conveyor tapered roller bearing roller

Technical Field

The utility model is used for supporting bearing roller of general belt conveyor.

Background

At present, the current latest standard of the universal belt conveyor industry is DT II (A) belt conveyor design manual (2 nd edition) compiled by the university of Beijing Jack-up transport machinery design research institute in 2013, and the matched standard drawing is DT II (A) belt conveyor special drawing-2011. Referring to fig. 3 for the idler roller structure in the standard drawing, the bearing for the idler roller shown in fig. 3 is a deep groove ball bearing (C4 set play). The arrangement of idler rollers in use of the apparatus is shown in figures 1 and 2. In actual use, the side idler has axial force, and the bearing of the idler is a deep groove ball bearing, so that the axial force is not allowed in the use principle, and the service life of the bearing of the side idler according to the existing idler structure is shorter.

In fig. 3, the deep groove ball bearing (10) of the roller of the general belt conveyor is not directly positioned with the bearing seat (11) and the retaining ring (15) for the shaft, but is indirectly positioned through the sealing ring (9), the outer sealing ring (14), the outer retaining ring (16) and the baffle (17). The sealing ring (9) is made of nylon 6, the inner sealing ring (12), the sealing disc (13) and the outer sealing ring (14) are made of nylon 1010, the material strength is weak, and the change rate of the overall dimension is large under the influence of the ambient temperature and humidity. If damage (difficult discovery) is caused to the sealing ring (9) in the installation process and the fatigue damage of the outer sealing ring (14) under the action of axial force in the use process, the service life of the deep groove ball bearing (10) is greatly influenced. Meanwhile, the deep groove ball bearing (10) is a large-clearance bearing, so that the axial vibration quantity of the carrier roller is large, the sealing effect of the sealing element is influenced, and the running resistance of the sealing element is increased.

The sealing mode of the roller of the universal belt conveyor carrier roller is labyrinth non-contact sealing, and the carrier roller is easy to enter water under outdoor use conditions, particularly in rainy areas, so that the corrosion of the internal structure can be caused, and the resistance is increased.

Disclosure of Invention

The roller aims to overcome the defects that the conventional roller cannot bear large axial force, the service life of a sealing element is short, the waterproof effect is poor, the rotating resistance of the roller is large, and the axial vibration quantity is large. The utility model provides an use tapered roller bearing's bearing roller, this roller: can bear larger axial force; the installation of the sealing ring and the check ring is relatively independent from the bearing, the installation precision is high, the resistance of the sealing ring is small, the waterproof effect is good, and the service life is long; the bearing has high positioning precision, small axial vibration quantity and long service life; the whole rotation resistance is small. The structure chart of the roller of the utility model is shown in figure 4, and the applicable specification parameters are shown in table 2 and table 3.

Technical scheme

The utility model provides a technical scheme that its technical problem adopted is:

① the structural design of the bearing seat is optimized, the bearing seat and the bearing are directly positioned and installed, the bearing and the shaft are directly positioned and installed through the retaining ring for the shaft, the installation precision and the installation reliability are improved, and meanwhile, the better installation precision can effectively reduce the running resistance of the bearing.

② the material of the sealing ring is replaced, so that the sealing ring has smaller size change rate under various environmental conditions, and the installation precision is ensured.

③ the sealing ring is positioned and installed independently, which avoids the sealing effect of the sealing ring from being influenced by the axial transmission of the bearing, so that the sealing ring can not bear the external load of the carrier roller in each direction theoretically, and the fatigue damage caused by the axial force is avoided.

④ the inner retainer ring and the outer retainer ring are sealed in a contact manner, so that the whole sealing form reaches a labyrinth type semi-non-contact sealing structure, and the dustproof effect is met while the effective waterproof effect is achieved.

The beneficial effects of the utility model

The utility model has the advantages that:

① improved bearing capacity or prolonged service life

Under the condition of the same service life, the bearing capacity of the tapered roller bearing can be up to 2.2 times of that of the deep groove ball bearing; under the same bearing condition, the service life of the tapered roller bearing can reach 10 times of that of the deep groove ball bearing at most.

② improves the water resistance of the idler roller under outdoor use conditions, as detailed in the test data in Table 1.

③ axial momentum is greatly reduced, the relative position size of the sealing ring is effectively ensured, and the rotating noise of the roller of the carrier roller is reduced while the resistance of the sealing ring is reduced and the sealing effect is improved.

④, see table 1 for details, and the test comparison in table 1 is performed by taking a grooved idler roller with a bandwidth B of 1400mm (model number of idler roller is phi 159 and 30306 and 530, that is, diameter phi D of idler roller is 159mm, shaft diameter phi D is 30mm, and length L of roller is 530mm) as an example.

TABLE 1

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a standard sectional view (type I) of a general belt conveyor.

Fig. 2 is a standard sectional view (type II) of a general belt conveyor.

Fig. 3 is a diagram of a universal belt conveyor idler roller configuration.

Fig. 4 is a structural view of the idler roller of the present invention.

In the figure, 1, bulk materials, 2, an adhesive tape, 3, a grooved carrier roller middle roller, 4, a parallel lower carrier roller, 5, a grooved carrier roller side roller, 6, a V-shaped carrier roller, 7, a roller skin, 8, a shaft, 9, a sealing ring, 10, a deep groove ball bearing, 11, a bearing seat, 12, an inner sealing ring, 13, a sealing disc, 14, an outer sealing ring, 15, a shaft retainer ring, 16, a baffle plate, 17, an outer retainer ring, 18, an inner retainer ring, 19, a conical roller bearing, 20, a VD-shaped rubber sealing ring,

parameters in fig. 1, 2, 3, 4: the matching relationship of L, phi D and B is shown in table 2, and the matching relationship of the bearing model number and phi D and phi D is shown in table 3.

The idler groove angle λ referred to in fig. 1 and 2 is: 10 °, 20 °, 30 °, 35 °, 45 °, 60 ° and non-standard angles smaller than 30 °.

TABLE 2

TABLE 3

The comparison of the materials of the parts in fig. 3 and fig. 4 is shown in table 4.

TABLE 4

Detailed Description

① in figure 3, the bearing seat (11) is made of a 08AL cold rolled plate, in figure 4, the bearing seat (11) is made of a SPHC material with a mark in Japanese Industrial Standard (JIS G3131-2010 hot rolled low carbon steel thick plate, thin plate and strip), the SPHC has better stretching capacity relative to 08AL, the change of the bottom structure of the bearing seat (11) in figure 4 can be realized, after stamping forming, the bending radius of the plate can reach the radius of the fillet of the outer ring of the tapered roller bearing (19), so that the bearing seat (11) and the outer ring of the tapered roller bearing (19) can be directly positioned and installed, and the inner ring of the tapered roller bearing (19) and the shaft (8) are directly positioned and installed through the shaft retainer ring (15).

In the design process, the precision requirements of the dimensional tolerance and the form and position tolerance after the roller skin (7) and the bearing seat (11) are machined in the figure 4 are improved, and the technical guarantee is provided for the installation precision after the roller skin (7) and the bearing seat (11) are welded. The improvement of the technical requirement can be completely met according to the current processing technology and stamping technology.

When the roller is assembled, an adjusting gasket (no mark in fig. 4) with the thickness of 0.2mm is arranged between the inner ring of the tapered roller bearing (19) and the shaft retainer ring (15) in fig. 4 for adjusting the accumulated deviation generated during the installation so as to ensure the installation precision of the tapered roller bearing (19).

Through the measures, the mounting precision of the bearing is improved, the stress of the internal structure of the carrier roller is more reasonable, and the carrier roller can bear larger axial load due to the adoption of the tapered roller bearing.

② in FIG. 4, the seal ring (9), the inner seal ring (12) and the outer seal ring (14) are all made of POM polyformaldehyde material, the dimensional change rate is small after injection molding under the influence of the conditions of ambient temperature, humidity and the like, and the material strength is superior to that of nylon 6 and nylon 1010.

③ in FIG. 4, the inner seal ring (12) is positioned and installed by the interference fit of the inner retainer ring (18) and the bearing seat (11), and the outer seal ring (14) is positioned and installed by the interference fit of the outer retainer ring (17) and the shaft (8), so that the seal ring is independently positioned and installed.

④ in fig. 4, a VD-shaped rubber sealing ring (20) is arranged between the outer retainer ring (17) and the inner retainer ring (18) to play an effective waterproof role.

Claims

1. Novel belt conveyor tapered roller bearing roller, roller skin (7) and bearing frame (11) welding back, sealing washer (9), tapered roller bearing (19), inner seal circle (12), outer seal circle (14), interior retaining ring (18), VD shape rubber seal circle (20) and outer retaining ring (17) are installed in proper order, characterized by: the sealing ring (9) is installed with the shaft (8) in a transition fit manner; the outer ring of the tapered roller bearing (19) is directly positioned and mounted with the bearing seat (11), and the inner ring of the tapered roller bearing (19) is directly positioned and mounted with the shaft (8) through a retaining ring (15) for the shaft; the inner sealing ring (12) is positioned and installed through interference fit of the inner retainer ring (18) and the bearing seat (11), and the outer sealing ring (14) is positioned and installed through interference fit of the outer retainer ring (17) and the shaft (8).

2. The new belt conveyor tapered roller bearing idler roller as claimed in claim 1, characterized in that: the roller bearing adopts a tapered roller bearing (19).

3. The new belt conveyor tapered roller bearing idler roller as claimed in claim 1, characterized in that: contact sealing is realized between the outer retainer ring (17) and the inner retainer ring (18) by arranging a VD-shaped rubber sealing ring (20).