Floating coaxial rotating device

Abstract

The utility model particularly relates to a floating coaxial rotating device, and belongs to the technical field of rotating equipment. The floating coaxial rotating device comprises a supporting arm and a rotating assembly. The supporting arm comprises two arm parts which are oppositely arranged in the first direction, the rotating assemblies are arranged on the two arm parts correspondingly, each rotating assembly comprises a self-aligning ball bearing and a rotating component, the outer ring of each self-aligning ball bearing is connected to the corresponding arm part, the rotating component is connected to the inner ring of the corresponding self-aligning ball bearing, and the rotating axes of the two rotating components are coaxial. The relative positions of the inner ring and the outer ring of the self-aligning ball bearing can be adjusted within a certain range, so that equipment can be normally connected to the supporting arm even if coaxiality errors exist in the two rotating parts.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotating equipment, and in particular relates to a floating coaxial rotating device. Background Art

[0002] At present, some equipment needs to be fixed with a bracket when in use, and the equipment is also required to be able to rotate relative to the bracket. For example, monitoring equipment or radar equipment needs to be fixed on the bracket.

[0003] In order to improve the fixing reliability, two rotating ends are usually arranged opposite to each other on the bracket, and the two sides of the device are respectively connected to the two rotating ends, which not only improves the connection reliability between the device and the bracket, but also enables the device to rotate relative to the bracket.

[0004] However, the disadvantage of this connection method is that it has a high requirement for the coaxiality of the two rotating ends. If the positions of the two rotating ends deviate, the device may not be installed properly. Utility Model Content

[0005] The utility model aims to provide a floating coaxial rotating device, which has a rotating component with adjustable position, thereby reducing the risk of equipment being unable to be normally installed due to coaxiality errors.

[0006] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is: the embodiment of the present application provides a floating coaxial rotating device, including a support arm and a rotating assembly. The support arm includes two arm portions arranged opposite to each other along a first direction, and the rotating assembly is respectively arranged on the two arm portions. The rotating assembly includes a self-aligning ball bearing and a rotating component, the outer ring of the self-aligning ball bearing is connected to the arm portion, and the rotating component is connected to the inner ring of the self-aligning ball bearing, and the rotating axes of the two rotating components are coaxial.

[0007] In some embodiments, the rotating component includes a shaft body and a fixed sleeve. Along the axial direction of the shaft body, a supporting portion is provided on one side of the shaft body, and the shaft body is penetrated through the inner ring. The fixed sleeve is sleeved on the shaft body and is threadedly connected to the shaft body, and the inner ring is provided between the supporting portion and the fixed sleeve.

[0008] In some embodiments, the rotating component also includes a limiting ring, which is sleeved on the shaft body. The limiting ring is arranged between the inner ring and the fixed sleeve. The limiting ring is provided with a protrusion protruding from the inner ring of the limiting ring. Along the axial direction of the shaft body, a limiting groove is provided on the outer peripheral wall of the shaft body, and the protrusion is accommodated in the limiting groove.

[0009] In some embodiments, the protrusion includes a first section extending along the radial direction of the limiting ring and a second section extending along the axial direction of the limiting ring.

[0010] In some embodiments, the length of the second segment is greater than the length of the first segment.

[0011] In some embodiments, the limiting ring is provided with a plurality of inclined portions around the circumference thereof, the inclined portions are inclined in a direction away from the inner ring, a recess is provided on the outer peripheral wall of the fixing sleeve, and a first opening is provided on one side of the recess close to the inner ring.

[0012] In some embodiments, the rotating component further includes a connecting portion, which is detachably connected to the shaft body.

[0013] In some embodiments, the interior of the connecting portion is hollow.

[0014] In some embodiments, the connecting portion includes a second opening, and the connecting portion includes a first wall, and the first wall and the second opening are arranged opposite to each other.

[0015] In some embodiments, the connecting portion is provided with a flange, and the connecting portion is connected to the shaft body through the flange.

[0016] The utility model has the following beneficial effects:

[0017] 1. The relative position of the inner ring and outer ring of the self-aligning ball bearing can be adjusted within a certain range, so that even if there is a coaxiality error between the two rotating parts, the equipment can be normally connected to the support arm.

[0018] 2. The abutting part and the fixing sleeve cooperate to fix the shaft body to the self-aligning ball bearing, which is easy to operate and reliable to fix. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the floating coaxial rotating device of the utility model;

[0020] Figure 2 It is a schematic diagram of the connection between the fixed sleeve and the shaft body of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the shaft body of the utility model;

[0022] Figure 4 This is a schematic diagram of the connection between the limit ring and the shaft body of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the limit ring of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the connecting part of the utility model.

[0025] Figure numbers: 1-support arm, 2-arm part, 3-connecting part, 4-axis body, 5-limiting groove, 6-fixing sleeve, 7-recessed part, 8-inclined part, 9-limiting ring, 10-protruding part, 11-first section, 12-second section, 13-second opening, 14-resting part, 15-self-aligning ball bearing. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0027] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] See also Figure 1 and Figure 2 The embodiment of the present application provides a floating coaxial rotating device, including a support arm 1 and a rotating assembly. The support arm 1 includes two arm portions 2 arranged opposite to each other along a first direction, and the rotating assembly is respectively arranged on the two arm portions 2. The rotating assembly includes a self-aligning ball bearing 15 and a rotating component. The outer ring of the self-aligning ball bearing 15 is connected to the arm portion 2, and the rotating component is connected to the inner ring of the self-aligning ball bearing 15. The rotating axes of the two rotating components are coaxial.

[0029] The first direction may be the direction indicated by the X-axis in the figure.

[0030] The arm 2 may be provided with a through hole, and the self-aligning ball bearing 15 may be accommodated in the through hole, so that the outer ring of the self-aligning ball bearing 15 can be connected to the arm 2. Further, the outer ring and the peripheral wall of the through hole may be interference fit.

[0031] The supporting arm 1 may include a connecting arm and arm portions 2 , wherein the connecting arm is connected to two arm portions 2 .

[0032] The rotating component is used for connecting the device so that the device can rotate relative to the support arm 1. The rotating component is connected to the inner ring of the self-aligning ball bearing 15. Since the relative positions of the inner ring and the outer ring of the self-aligning ball bearing 15 can be adjusted within a certain range, the device can be normally connected to the support arm 1 even if there is a coaxiality error between the two rotating components.

[0033] The rotating component can be driven to rotate by a motor.

[0034] See also Figure 2 and Figure 3In some embodiments, the rotating component includes a shaft body 4 and a fixing sleeve 6. Along the axial direction of the shaft body 4, a supporting portion 14 is provided on one side of the shaft body 4, and the shaft body 4 is penetrated through the inner ring. The fixing sleeve 6 is sleeved on the shaft body 4 and is threadedly connected to the shaft body 4, and the inner ring is provided between the supporting portion 14 and the fixing sleeve 6.

[0035] The shaft body 4 is inserted into the inner ring, so that the shaft body 4 can be connected to the self-aligning ball bearing 15 , and the shaft body 4 can rotate relative to the arm 2 .

[0036] The abutment portion 14 and the fixing sleeve 6 cooperate to fix the shaft body 4 to the self-aligning ball bearing 15. Specifically, by rotating the fixing sleeve 6, the fixing sleeve 6 can move along the axial direction of the shaft body 4. When the abutment portion 14 abuts against one side of the inner ring and the fixing sleeve 6 abuts against the other side of the inner ring, the inner ring is clamped by the two and the shaft body 4 is fixed to the self-aligning ball bearing 15.

[0037] See also Figure 4 In some embodiments, the rotating component also includes a limit ring 9, which is sleeved on the shaft body 4. The limit ring 9 is arranged between the inner ring and the fixed sleeve 6. The limit ring 9 is provided with a protrusion 10 protruding from the inner ring of the limit ring 9. Along the axial direction of the shaft body 4, the outer peripheral wall of the shaft body 4 is provided with a limit groove 5, and the protrusion 10 is accommodated in the limit groove 5.

[0038] When the limiting ring 9 is sleeved on the shaft body 4 , the protrusion 10 is accommodated in the limiting groove 5 , so that the limiting ring 9 can move axially relative to the shaft body 4 without relative rotation.

[0039] On the one hand, the axial position of the fixing sleeve 6 on the shaft body 4 can be adjusted by the limiting ring 9 , and on the other hand, the fixing sleeve 6 can be prevented from loosening by fixing the relative positions of the fixing sleeve 6 and the limiting ring 9 .

[0040] See also Figure 5 In some embodiments, the protrusion 10 includes a first section 11 extending radially along the limiting ring 9 and a second section 12 extending axially along the limiting ring 9 .

[0041] The first section 11 is used to adjust the position of the second section 12 relative to the limiting ring 9 .

[0042] The bending structure formed by the first section 11 and the second section 12 not only reduces the material usage of the protruding portion 10 and reduces its weight, but also ensures the structural strength of the protruding portion 10 .

[0043] The first section 11 and the second section 12 may be integrally formed, that is, the first section 11 and the second section 12 may be bent.

[0044] In some embodiments, the length of the second segment 12 is greater than the length of the first segment 11 .

[0045] The second section 12 is longer, which increases the matching accuracy between the protrusion 10 and the limiting groove 5 and increases the structural strength of the protrusion 10 , thereby reducing the risk of the protrusion 10 bending under the reaction force of the shaft body 4 .

[0046] See also Figure 5 In some embodiments, the limiting ring 9 is provided with a plurality of inclined portions 8 around the circumference of the limiting ring 9, the inclined portions 8 are inclined in a direction away from the inner ring, the outer peripheral wall of the fixing sleeve 6 is provided with a recessed portion 7, and a first opening is provided on a side of the recessed portion 7 close to the inner ring.

[0047] The inclined portion 8 can produce elastic deformation relative to the limiting ring 9. For example, the inclined portion 8 and the limiting ring 9 can be integrally formed, the limiting ring 9 is made of spring steel, and the inclined portion 8 is formed by partially bending the limiting ring 9.

[0048] The inclined portion 8 is inclined in a direction away from the inner ring, so that when the fixing sleeve 6 moves toward the inner ring, it can abut against the inclined portion 8 to cause the inclined portion 8 to generate elastic deformation.

[0049] The recessed portion 7 is used to accommodate the inclined portion 8 , that is, when the fixing sleeve 6 moves toward the inner ring, it abuts against the inclined portion 8 , so that the inclined portion 8 can enter the recessed portion 7 from the first opening. At this time, the inclined portion 8 can lock the fixing sleeve 6 .

[0050] Since there are multiple inclined portions 8, some of the inclined portions 8 are pressed against the fixing sleeve 6 to produce elastic deformation, which can generate axial force on the fixing sleeve 6, thereby preventing the fixing sleeve 6 from loosening. Some of the inclined portions 8 can enter the recessed portion 7, increasing the anti-loosening effect on the fixing sleeve 6.

[0051] See also Figure 1 and Figure 6 In some embodiments, the rotating component further includes a connecting portion 3 , which is detachably connected to the shaft body 4 .

[0052] In the embodiment where the shaft body 4 is provided with the abutting portion 14 , since the abutting portion 14 has a larger surface area, the connecting portion 3 can be connected to the abutting portion 14 .

[0053] The connecting portion 3 may be connected to the abutting portion 14 by means of bolts or screws.

[0054] The connecting portion 3 is used for connecting a device so that the device can be connected to the shaft 4 .

[0055] See also Figure 6 In some embodiments, the connecting portion 3 is hollow inside.

[0056] The interior of the connecting portion 3 is hollow, which not only saves costs but also reduces the weight of the connecting portion 3 .

[0057] In some embodiments, the connecting portion 3 includes a second opening 13 , and the connecting portion 3 includes a first wall, and the first wall and the second opening 13 are arranged opposite to each other.

[0058] For example, the connecting portion 3 may be a hollow cubic structure.

[0059] The first wall is used for connecting the device to the connecting part 3. For example, the first wall may be provided with a through hole. By using bolts or screws to pass through the through hole and then threadedly connected to the device, the device can be detachably connected to the connecting part 3.

[0060] The second opening 13 further reduces the weight of the connecting portion 3 , and because the first wall and the second opening 13 are arranged opposite to each other, the structural strength of the connecting portion 3 is ensured.

[0061] See also Figure 6 In some embodiments, the connecting portion 3 is provided with a flange, and the connecting portion 3 is connected to the shaft body 4 through the flange.

[0062] The flange is connected to the connecting part 3 and the shaft body 4, which increases the connection reliability of the connecting part 3 and the shaft body 4. The flange and the shaft body 4 are connected by bolts or screws, which facilitates the disassembly and maintenance of the connecting part 3 from the shaft body 4.

[0063] In the embodiment in which the shaft body 4 is provided with the abutment portion 14 , the flange is connected to the abutment portion 14 .

[0064] It should be noted that bolts or screws are used in many places in the embodiments of the present application. The specific method of connecting two components by bolts or screws is well known to those skilled in the art and will not be repeated here.

[0065] The above embodiments are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made by ordinary technicians in this field to the technical solutions of the present invention should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A floating coaxial rotating device, characterized in that: include: A support arm (1) comprising two arm portions (2) arranged opposite to each other along a first direction; The rotating components are respectively arranged on the two arm parts (2), and the rotating components include a self-aligning ball bearing (15) and a rotating component. The outer ring of the self-aligning ball bearing (15) is connected to the arm part (2), and the rotating component is connected to the inner ring of the self-aligning ball bearing (15). The rotating axes of the two rotating components are coaxial.

2. The floating coaxial rotating device according to claim 1, characterized in that: The rotating component comprises: A shaft body (4), wherein a supporting portion (14) is provided on one side of the shaft body (4) along the axial direction of the shaft body (4), and the shaft body (4) is passed through the inner ring; A fixing sleeve (6) is sleeved on the shaft body (4) and is threadedly connected to the shaft body (4); the inner ring is arranged between the abutting portion (14) and the fixing sleeve (6).

3. The floating coaxial rotating device according to claim 2, characterized in that: The rotating component also includes a limiting ring (9), which is sleeved on the shaft body (4), and the limiting ring (9) is arranged between the inner ring and the fixed sleeve (6). The limiting ring (9) is provided with a protruding portion (10) protruding from the inner ring of the limiting ring (9), and along the axial direction of the shaft body (4), the outer peripheral wall of the shaft body (4) is provided with a limiting groove (5), and the protruding portion (10) is accommodated in the limiting groove (5).

4. The floating coaxial rotating device according to claim 3, characterized in that: The protruding portion (10) comprises a first section (11) extending radially along the limiting ring (9) and a second section (12) extending axially along the limiting ring (9).

5. The floating coaxial rotating device according to claim 4, characterized in that: The length of the second section (12) is greater than the length of the first section (11).

6. The floating coaxial rotating device according to claim 3, characterized in that: The limiting ring (9) is provided with a plurality of inclined portions (8) around the circumference of the limiting ring (9), and the inclined portions (8) are inclined in a direction away from the inner ring. The outer peripheral wall of the fixing sleeve (6) is provided with a recessed portion (7), and a first opening is provided on a side of the recessed portion (7) close to the inner ring.

7. The floating coaxial rotating device according to claim 2, characterized in that: The rotating component further comprises a connecting portion (3), wherein the connecting portion (3) is detachably connected to the shaft body (4).

8. The floating coaxial rotating device according to claim 7, characterized in that: The connecting portion (3) is hollow inside.

9. The floating coaxial rotating device according to claim 8, characterized in that: The connecting portion (3) comprises a second opening (13), and the connecting portion (3) comprises a first wall, wherein the first wall and the second opening (13) are arranged opposite to each other.

10. The floating coaxial rotating device according to claim 7, characterized in that: The connecting portion (3) is provided with a flange, and the connecting portion (3) is connected to the shaft body (4) via the flange.

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