Unpowered roller

Abstract

The utility model relates to an unpowered roller, which comprises a roller body and a support shaft, the structure of the roller body comprises a roller body, the two ends of the roller body are respectively provided with an extension part, and the extension parts are used for sealing the end parts of the roller and accommodating and positioning a bearing, so that the bearing is matched with the support shaft. According to the roller body, a traditional roller body and a sealing cover are made into an integrated structure, the bearing chambers are directly arranged at the two ends of the roller body, the bearings are installed in the bearing chambers in the assembling process, the positions of the bearings are fixed through the shaft elastic check rings on one side or the two sides, the bearings are prevented from moving, the sealing cover does not need to be installed independently, the number of parts is reduced, and cost is reduced. The requirement for installation coaxiality is lowered, and the assembly efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a roller technical field especially a kind of unpowered roller. BACKGROUND

[0002] Roller conveying line is composed of driving roller and unpowered driven roller.Unpowered driven roller usually includes roller body, cover and support shaft, and the both ends of roller body are closed by cover, and cover usually adopts V-shaped wheel cover, its outside is used to assemble conveying belt, and inside is matched with support shaft by bearing.This kind of traditional structure has the advantages of stable structure, easy assembly etc.But the requirement for assembly concentricity is relatively high, and due to the multiple parts, multiple assembly links, assembly efficiency is low. SUMMARY

[0003] In view of the deficiencies of prior art, the utility model provides a kind of unpowered roller, to improve assembly efficiency.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A kind of unpowered roller, including roller body and support shaft, the structure of roller body includes barrel body, and its both ends are formed with extension respectively, and the extension is used to close roller end, and accommodate and position bearing, so that bearing is matched with support shaft.

[0006] Further technical scheme is as follows:

[0007] The structure of extension includes:

[0008] Closed part, the both ends of barrel body are respectively formed by the circumferential bending of it radially inwardly;

[0009] Positioning part, including the radial positioning part formed by the axial bending of cover part inwardly;

[0010] Bearing chamber, surrounded by positioning part, for accommodating bearing.

[0011] The length of radial positioning part along the axis is not less than the width of bearing.

[0012] The positioning part further includes axial positioning part formed by the radial bending of radial positioning part inwardly.

[0013] The support shaft is provided with elastic retaining ring for shaft.

[0014] The elastic retaining ring for shaft is located on the side of bearing outside roller body.

[0015] The surface of barrel body is provided with belt slot for assembling driving belt.

[0016] The belt slot is V-shaped groove.

[0017] The groove is obtained by extrusion forming process of the barrel body.

[0018] The extension is obtained by extrusion forming process of the barrel body.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model discloses a traditional barrel body and cover are made into integrated structure, directly setting up bearing chamber at the both ends of barrel body, when assembling, bearing is installed in bearing chamber, and the position of bearing is fixed through the elastic baffle ring of one side or both sides, prevents bearing from moving, and the cover is not needed to be separately installed, improves assembling efficiency.

[0021] The utility model discloses directly setting up groove on the roller body, cancels the V-shaped wheel cover, and the support and transmission function of the original V-shaped wheel cover are retained. Reduce the part, facilitate assembly, and effectively improve the concentricity of the barrel, realize the cost reduction and benefit increase.

[0022] Other features and advantages of the utility model will be described in the subsequent specification or be understood through the implementation of the utility model. DRAWINGS

[0023] Figure 1 It is the structure schematic view of the utility model embodiment 2.

[0024] Figure 2 It is the structure schematic view of the roller body of the utility model embodiment 2.

[0025] Figure 3 It is Figure 1 The left view of.

[0026] In the drawing: 1, support shaft, 2, roller body, 3, bearing, 21, barrel body, 22, closed part, 23, positioning part, 24, bearing chamber, 211, groove, 231, radial positioning part, 232, axial positioning part. PREFERRED EMBODIMENT

[0027] The specific implementation of the utility model will be described below in combination with the drawings.

[0028] Embodiment 1

[0029] Refer to Figures 1 to 3 The unpowered roller of the embodiment includes roller body 2 and support shaft 1, and the structure of roller body 2 includes barrel body 21, and the both ends of barrel body 21 are formed with extension respectively, and the extension is used to close the end of roller, and accommodate and position bearing 3, so that bearing 3 cooperates with support shaft 1.

[0030] In operation, the support shaft 1 is fixed at both ends to the fixed frame of the roller conveying line, and the roller body 2 and the support shaft 1 are relatively rotatable through the bearing 3.

[0031] The extension part comprises:

[0032] The closed part 22 is formed by bending the circumference of the two ends of the barrel body 21 radially inward.

[0033] The positioning part 23 comprises a radial positioning part 231 formed by bending the closed part 22 axially inward.

[0034] The bearing chamber 24 is surrounded by the positioning part 23 and is used to accommodate and support the bearing 3.

[0035] The closed part 22 is used to close the end part, so that a closed space is formed inside the barrel body 21.

[0036] The radial positioning part 231 is used to press the outer ring of the bearing 3 radially, so that the barrel body 21 is rotatably matched with the inner ring of the bearing on the support shaft 1.

[0037] As a preferred embodiment, the length of the radial positioning part 231 in the axial direction is not less than the width of the bearing 3, so as to ensure the stability of the assembly structure.

[0038] The extension part of the present embodiment plays the role of a traditional roller cover, i.e., it plays both a closing role and a supporting role.

[0039] As an embodiment, the extension part can be obtained by processing the barrel body 21 through an extrusion forming process. For example, a sealing machine can be used to heat a steel pipe at high frequency, and a cutter is used to slowly extrude the pipe from the outside to form the required extruded roller body.

[0040] As a specific embodiment, the support shaft 1 is provided with an elastic shaft ring 4 at both ends. Each end of the elastic shaft ring 4 can comprise two, which are used to axially limit the bearing 3 from moving to prevent the bearing from moving.

[0041] As a further improvement, the surface of the barrel body 21 is provided with a belt groove 211 for assembling a driving belt. The belt groove 211 is a V-shaped groove, which can be matched with a V-shaped driving belt to realize the driving connection between the non-powered roller and the driving roller. That is, the roller body of the present embodiment plays both a closing role and a supporting role and a driving role.

[0042] As an embodiment, the belt groove 211 is obtained by processing the barrel body 21 through an extrusion forming process.

[0043] Embodiment 2

[0044] As Figure 1 andFigure 2 The unpowered roller of the embodiment of the present embodiment is different from the embodiment 1 in that:

[0045] The positioning part 23 further comprises an axial positioning part 232 formed by secondly bending radially inwardly from the radial positioning part 231.

[0046] The axial positioning part 232 plays a role of axially limiting the bearing 3.

[0047] The positioning part 23 of the embodiment comprises the radial positioning part 231 and the axial positioning part 232, and simultaneously realizes the radial compression and the axial one-side positioning of the outer ring of the bearing 3. Therefore, the shaft elastic retainer 4 of the embodiment only needs to be arranged on the side located outside the bearing 3.

[0048] Those skilled in the art can understand that the above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An unpowered drum, characterized by, The drum body (2) comprises a barrel body (21) with two ends each formed with an extension part for closing the drum end and accommodating and positioning a bearing (3) to cooperate with the support shaft (1); The extension part comprises: a closing part (22) formed by bending the circumference of the barrel body (21) inward along the radial direction; a positioning part (23) comprising a radial positioning part (231) formed by bending the closing part (22) inward along the axial direction, and an axial positioning part (232) formed by bending the radial positioning part (231) inward along the radial direction; a bearing chamber (24) formed by the positioning part (23) for accommodating the bearing (3); a belt groove (211) is provided on the surface of the barrel body (21) for assembling a driving belt.

2. The unpowered drum of claim 1, wherein, The length of the radial positioning part (231) along the axial direction is not less than the width of the bearing (3).

3. The unpowered roller of claim 1, wherein, An elastic shaft retainer (4) is provided on the support shaft (1).

4. The unpowered roller of claim 3, wherein, The elastic shaft retainer (4) is located on the side of the bearing (3) away from the drum body (2).

5. The unpowered drum of claim 1, wherein, The belt groove (211) is a V-shaped groove.

6. The unpowered drum of claim 1, wherein, The belt groove (211) is obtained by extrusion molding process of the barrel body (21).

7. The unpowered drum of claim 1, wherein, The extension part is obtained by extrusion molding process of the barrel body (21).

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