Electric outer rotor roller

Abstract

The utility model relates to an electric outer rotor roller which comprises a roller body, a motor, a supporting shaft and an end cover. The roller body structurally comprises a roller body, an extension part is formed at one end of the roller body, and the extension part is used for sealing the end of the roller and accommodating and positioning the first bearing, so that the first bearing is matched with the first end of the supporting shaft; the other end of the cylinder body is connected with the end cover, and the end cover is matched with the second end of the supporting shaft through a second bearing. According to the roller body, a traditional roller body and the end cover on one side are made into an integrated structure, the bearing chamber is directly arranged at one end of the roller body, the bearing is installed in the bearing chamber in the assembling process, the position of the bearing is fixed through the circlip for the shaft, the bearing is prevented from moving, only one end cover needs to be installed, the number of parts is reduced, and the assembling efficiency is improved.

Description

TECHNICAL FIELD

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

[0002] Electric roller conveying line is composed of driving roller and powerless driven roller.Driving roller usually includes roller body, end cover and motor or motor and speed reducer arranged in the inside of roller body, and support shaft, the both ends of roller body are closed by end cover, end cover usually adopts V-shaped wheel end cover, its outside is used for assembling conveying belt, and inside is matched with support shaft by bearing.This kind of traditional structure has the advantages such as stable structure, convenient assembly etc.But the requirement for assembly concentricity is relatively high, and due to many parts, many assembly links, assembly efficiency is low. SUMMARY

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

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

[0005] A kind of electric outer rotor roller, including roller body, motor, support shaft and end cover;

[0006] The structure of the roller body includes barrel body, and one end of the barrel body is formed with an extension part, the extension part is used to close the end of the roller, and accommodate and position the first bearing, so that the first bearing is matched with the first end of the support shaft;

[0007] The other end of the barrel body is connected with the end cover, and the end cover is matched with the second end of the support shaft through the second bearing.

[0008] Further technical scheme is as follows:

[0009] The structure of the extension part includes:

[0010] The two ends of the barrel body are respectively formed by bending the circumference of the barrel body radially inward;

[0011] Positioning part, including radial positioning part formed by bending the closed part axially inward, and axial positioning part formed by continuing to bend the radial positioning part radially inward;

[0012] Bearing chamber, surrounded by the positioning part, used for accommodating the first bearing.

[0013] The length of the radial positioning part in the axial direction is not less than the width of the first bearing.

[0014] The support shaft is provided with elastic collar for shaft, which limits the first bearing and the second bearing axially.

[0015] The surface of the cylinder body is provided with a groove for mounting a transmission belt.

[0016] The groove is a V-shaped groove.

[0017] The groove is obtained by extrusion molding of the cylinder body.

[0018] A threading channel is formed inside the support shaft, and a threading hole communicating with the threading channel is provided on the support shaft.

[0019] The motor includes a stator, a rotor magnet, a magnet cage, and a housing. The stator is fixed to the support shaft by a stator fixing frame. The rotor magnet is disposed on the inner wall of the housing. The housing is connected to the cylinder body. The magnet cage is rotatably engaged with the support shaft.

[0020] The extension is obtained by extrusion molding of the cylinder body.

[0021] The beneficial effects of this utility model are as follows:

[0022] This utility model integrates the traditional cylinder body and one-side end cap into a single structure, and directly sets a bearing chamber at one end of the cylinder body. During assembly, the bearing is installed in the bearing chamber, and the bearing position is fixed by elastic retaining rings on one or both sides of the shaft to prevent the bearing from moving. Only one end cap needs to be installed, which improves assembly efficiency.

[0023] This invention directly incorporates grooves on the drum body, eliminating the need for the original V-shaped wheel end cap while retaining its supporting and transmission functions. This reduces the number of parts, simplifies assembly, and effectively improves the concentricity of the drum body, thus achieving cost reduction and efficiency improvement.

[0024] Other features and advantages of this invention will be set forth in the following description or may be learned by practicing this invention. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0026] Figure 2 This is a schematic diagram of the structure of the roller body according to an embodiment of the present utility model.

[0027] Figure 3 for Figure 1 The left view.

[0028] In the diagram: 1. Support shaft; 2. Roller body; 3. First bearing; 4. Shaft retaining ring; 5. End cover; 6. Cable; 7. Motor; 8. Second bearing; 21. Roller body; 22. Enclosure; 23. Positioning part; 24. Bearing chamber; 71. Stator; 72. Rotor magnet; 73. Housing; 74. Magnet cage; 101. Wire hole; 211. Groove; 231. Radial positioning part; 232. Axial positioning part. Detailed Implementation

[0029] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0030] See Figures 1 to 3 An electric external rotor drum according to this embodiment includes a drum body 2, a motor 7, a support shaft 1, and an end cover 5;

[0031] The structure of the roller body 2 includes a roller body 21, one end of which is formed with an extension. The extension is used to close the end of the roller and to accommodate and position the first bearing 3, so that the first bearing 3 cooperates with the first end of the support shaft 1.

[0032] The other end of the cylinder body 21 is connected to the end cover 5, and the end cover 5 is engaged with the second end of the support shaft 1 through the second bearing 8.

[0033] The structure of the extension includes:

[0034] The closed section 22 and the two ends of the cylindrical body 21 are respectively formed by bending radially inward around their circumference;

[0035] The positioning part 23 includes 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 continuing to bend the radial positioning part 231 inward along the radial direction.

[0036] The bearing chamber 24, enclosed by the positioning part 23, is used to accommodate the first bearing 3.

[0037] During operation, the two ends of the support shaft 1 are fixed on the fixed frame of the roller conveyor line, and the motor 7 drives the roller body 2 to rotate. The extension of one end of the roller body 2 and the support shaft 1 are connected by the first bearing 3, and the end cap 5 at the other end and the support shaft 1 are connected by the second bearing 8, so as to realize the relative rotation of the roller body 2 and the support shaft 1.

[0038] The structure of the extension includes:

[0039] The closed section 22 and the two ends of the cylindrical body 21 are respectively formed by bending radially inward around their circumference;

[0040] Positioning part 23 includes a radial positioning part 231 formed by bending the cover part 22 inward along the axial direction;

[0041] The bearing chamber 24, enclosed by the positioning part 23, is used to accommodate and support the first bearing 3.

[0042] The support shaft 1 is provided with shaft elastic retaining rings 4 that axially limit the first bearing 3 and the second bearing 8 respectively.

[0043] The closing part 22 is used to close the end, so that a closed space is formed inside the cylinder body 21.

[0044] The radial positioning part 231 is used to press the outer ring of the first bearing 3 radially, so as to realize the rotational engagement between the cylinder body 21 and the inner ring of the bearing sleeved on the support shaft 1.

[0045] The axial positioning part 232 serves to limit the axial movement of the first bearing 3.

[0046] In this embodiment, the positioning part 23 includes a radial positioning part 231 and an axial positioning part 232, which simultaneously achieves radial clamping of the outer ring of the first bearing 3 and axial positioning on one side. Therefore, in this embodiment, the shaft elastic retaining ring 4 only needs to be provided on the side of the first bearing 3 near the outside of the roller body 2 to prevent the bearing from moving.

[0047] In this embodiment, the inner side of the end cap 5 provides axial restraint for the second bearing 8. Therefore, the shaft elastic retaining ring 4 only needs to be installed on the side of the second bearing 8 near the outside of the roller body 2 to prevent the bearing from moving.

[0048] In a preferred embodiment, the radial positioning part 231 has an axial length that is not less than the width of the first bearing 3 to ensure the stability of the assembly structure.

[0049] As a further improvement, the surface of the cylinder body 21 is provided with a groove 211 for mounting a transmission belt.

[0050] The groove 211 is specifically a V-shaped groove, which can be used with a V-shaped transmission belt to realize the transmission connection between the unpowered roller and the driven roller. Based on this, the roller body serves a sealing function, a supporting function, and a transmission function.

[0051] In a specific implementation, the groove 211 is obtained by extrusion molding the cylindrical body 21.

[0052] In a specific embodiment, the extension is obtained by extrusion molding of the cylinder body 21. For example, a sealing machine can be used to heat the steel pipe at high frequency, and a cutting tool can be used to slowly extrude the pipe from the outside to obtain the desired pressed cylinder body.

[0053] In a preferred embodiment, a wire-passing channel is formed inside the support shaft 1, and a wire-passing hole 101 communicating with the wire-passing channel is provided on the support shaft 1. The wire-passing channel is used to allow the cable 6 to pass through from the outside, and then pass through the wire-passing hole 101 to connect with the motor.

[0054] The installation method in this embodiment is as follows:

[0055] Install the two bearings in the bearing chambers of the drum body and the end cover, respectively. Tightly install the motor and support shaft 1. Insert the support shaft 1 into the right end of the drum body 21, and install the end cover 5 from the right end to seal it.

[0056] The electric external rotor drum of this embodiment uses a built-in motor with a common motor structure in the art. In a specific implementation, the motor 7 includes a stator 71, rotor magnets 72, a magnet cage 74, and a housing 73. The stator 71 is fixed to the support shaft 1 by a stator fixing frame. The rotor magnets 72 are disposed on the inner wall of the housing 73. The housing 73 is connected to the drum body 21, thus forming a direct-drive mode without a reduction gear. The magnet cage 74 is rotatably engaged with the support shaft 1.

[0057] It is understood that the electric external rotor drum in this embodiment can also adopt a non-direct drive mode, that is, the motor is connected to the drum body 21 through a reduction mechanism.

[0058] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric external rotor drum, characterized in that, It includes a roller body (2), a motor (7), a support shaft (1), and an end cap (5); The structure of the roller body (2) includes a roller body (21) with an extension at one end. The extension is used to close the end of the roller and to accommodate and position the first bearing (3) so that the first bearing (3) cooperates with the first end of the support shaft (1). The other end of the cylinder body (21) is connected to the end cap (5), and the end cap (5) is engaged with the second end of the support shaft (1) through the second bearing (8).

2. The electric external rotor drum according to claim 1, characterized in that, The structure of the extension includes: The closed part (22) is formed by bending the two ends of the cylindrical body (21) radially inward around its circumference; The positioning part (23) includes a radial positioning part (231) formed by bending the closed 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. The bearing chamber (24), enclosed by the positioning part (23), is used to accommodate the first bearing (3).

3. The electric external rotor drum according to claim 2, characterized in that, The radial positioning part (231) has an axial length that is not less than the width of the first bearing (3).

4. The electric external rotor drum according to claim 1, characterized in that, The support shaft (1) is provided with shaft elastic retaining rings (4) that axially limit the first bearing (3) and the second bearing (8) respectively.

5. The electric external rotor drum according to claim 1, characterized in that, The surface of the cylinder body (21) is provided with a belt groove (211) for mounting a transmission belt.

6. The electric external rotor drum according to claim 5, characterized in that, The groove (211) is a V-shaped groove.

7. The electric external rotor drum according to claim 5, characterized in that, The groove (211) is obtained by extrusion molding of the cylindrical body (21).

8. The electric external rotor drum according to claim 1, characterized in that, A threading channel is formed inside the support shaft (1), and a threading hole (101) communicating with the threading channel is provided on the support shaft (1).

9. The electric external rotor drum according to claim 1, characterized in that, The motor (7) includes a stator (71), a rotor magnet (72), a magnet retainer (74), and a housing (73). The stator (71) is fixed on the support shaft (1) by a stator fixing bracket. The rotor magnet (72) is disposed on the inner wall of the housing (73). The housing (73) is connected to the cylinder body (21). The magnet retainer (74) is rotatably engaged with the support shaft (1).

10. The electric external rotor drum according to claim 1, characterized in that, The extension is obtained by extrusion molding of the cylindrical body (21).

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