Bearing transportation protection device

Abstract

The utility model belongs to the field of bearings, and discloses a bearing transportation protection device. The bearing transportation protection device comprises a radial fixing device and an axial fixing device. The radial fixing device comprises an abutting part and a first fixing part, the abutting part is fixedly installed on the first fixing part, the abutting part is used for abutting against the side wall face of a rotor of the bearing, and the first fixing part is used for being fixedly installed on a bearing structure of the bearing; the axial fixing device comprises a pressing part and a second fixing part, the pressing part is fixedly installed on the second fixing part, the pressing part is used for abutting against the rotor end face of the bearing, and the second fixing part is used for being fixed to a bearing structure of the bearing. According to the utility model, the abutting part limits the movement of the rotor in the radial direction, and the pressing part limits the movement of the rotor in the axial direction, thereby overcoming the radial and axial impact loads of the rotor in the transportation process of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, and particularly relates to a bearing transportation protection device. Background Art

[0002] With the continuous increase in the single-unit capacity of wind turbines, the weight of the generator rotor is getting larger and larger. The original shaft head fixing tooling is difficult to meet the requirements for the protection and transportation of bearings in high-power generators. During the transportation of wind turbines, due to improper protection and complex road conditions, the motor rotor has radial vibration and axial end movement, resulting in indentations on the bearing raceway surface and affecting the safe operation of the motor. In summary, it is difficult to ensure the safety of the motor rotor position during transportation. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide a bearing transportation protection device, aiming to solve the problem that it is difficult to ensure the safety of the motor rotor position during transportation.

[0004] To achieve the above object, the utility model provides a bearing transportation protection device, including:

[0005] A radial fixing device, including an abutting portion and a first fixing portion. The abutting portion is fixedly installed on the first fixing portion. The abutting portion is used to abut against the side wall surface of the rotor of the bearing, and the first fixing portion is used to be fixedly installed on the bearing supporting structure; and,

[0006] An axial fixing device, including a pressing portion and a second fixing portion. The pressing portion is fixedly installed on the second fixing portion. The pressing portion is used to abut against the end face of the rotor of the bearing, and the second fixing portion is used to be fixed to the bearing supporting structure.

[0007] Optionally, the abutting portion includes an abutting plate, and one side end face of the abutting plate forms an abutting surface, and the abutting surface is used to abut against the side wall surface of the rotor of the bearing.

[0008] Optionally, a limiting groove is formed on the abutting surface, and the limiting groove is used to accommodate the rotor of the bearing.

[0009] Optionally, the first fixing portion includes a fixing seat. The fixing seat includes an installation end and a connection end that are oppositely arranged. The installation end is used to be installed on the bearing supporting structure, and the connection end is fixedly connected to the abutting portion.

[0010] Optionally, the radial fixing device further includes a radial tie rod, and both ends of the radial tie rod are respectively fixedly installed on the abutting plate and the fixing seat.

[0011] Optionally, a first threaded hole is formed on the abutting plate, and a first external thread is formed on the outer sidewall of the radial pull rod, and the radial pull rod is threadedly installed into the first threaded hole; and / or,

[0012] The fixed seat is formed with a second threaded hole, and a second external thread is formed on the outer sidewall of the radial pull rod, and the radial pull rod is threadedly installed into the second threaded hole.

[0013] Optionally, the abutting portion and the first fixing portion form a radial limiting group, and there are two radial limiting groups, and the two radial limiting groups are respectively used to be arranged at both ends of the rotor of the bearing.

[0014] Optionally, the pressing portion includes a pressing plate, and a pressing surface is formed on one end face of the pressing plate, and the pressing surface is used to press against the end face of the rotor of the bearing.

[0015] Optionally, the second fixing portion includes an axial pull rod, one end of the axial pull rod is fixed to the pressing plate, and the other end is used to be fixedly connected to the bearing support structure.

[0016] Optionally, a through hole is formed through the pressing plate, and an external thread is formed on the outer sidewall of the axial pull rod;

[0017] The second fixing portion further includes a fixing nut, the axial pull rod passes through the through hole and is threadedly connected to the fixed thread.

[0018] The present utility model provides a bearing transportation protection device. During the transportation of the bearing, the first fixing portion and the second fixing portion are simultaneously arranged on the bearing support structure. The first fixing portion fixes the position of the abutting portion, so that the abutting portion abuts against the side wall surface of the rotor of the bearing, thereby realizing the restriction of the radial movement of the rotor. The second fixing portion fixes the position of the pressing portion, so that the pressing portion presses against the end face of the rotor of the bearing, restricting the axial movement of the rotor, and overcoming the radial and axial impact loads of the rotor during the transportation of the motor. Description of the Drawings

[0019] Figure 1 is a three-dimensional structural schematic diagram of the bearing transportation protection device provided by the embodiment solution of the present utility model;

[0020] Figure 2 is Figure 1 a partial enlarged structural schematic diagram of the bearing transportation protection device (excluding the axial fixing device) in

[0021] Explanation of the Reference Numerals in the Drawings:

[0022] 100. Bearing transportation protection device; 1. Radial fixing device; 11. Contact part; 12. First fixing part; 13. Radial pull rod; 2. Axial fixing device; 21. Pressing part; 22. Second fixing part.

[0023] The realization, functional features and advantages of the present utility model will be further described in conjunction with embodiments with reference to the accompanying drawings. Specific embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0025] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0026] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0027] As the single-unit capacity of wind turbines continues to increase, the weight of the generator rotor is getting larger and larger. The original shaft head fixing tooling is difficult to meet the requirements for the protection and transportation of bearings in high-power generators. During the transportation of wind turbines, due to improper protection and complex road conditions, the motor rotor has radial vibration and axial movement, resulting in indentations on the bearing raceway surface and affecting the safe operation of the motor.

[0028] Please refer to Figure 1, the present utility model provides a bearing transportation protection device 100, which includes a radial fixing device 1 and an axial fixing device 2; the radial fixing device 1 includes a contact portion 11 and a first fixing portion 12, the contact portion 11 is fixedly installed on the first fixing portion 12, the contact portion 11 is used to contact the side wall surface of the rotor of the bearing, and the first fixing portion 12 is used to be fixedly installed on the bearing structure; the axial fixing device 2 includes a pressing portion 21 and a second fixing portion 22, the pressing portion 21 is fixedly installed on the second fixing portion 22, the pressing portion 21 is used to contact the end face of the rotor of the bearing, and the second fixing portion 22 is used to be fixed to the bearing structure.

[0029] In the bearing transportation protection device 100 provided by the present utility model, during the transportation of the bearing, the first fixing portion 12 and the second fixing portion 22 are simultaneously arranged on the bearing structure. The first fixing portion 12 fixes the position of the contact portion 11, so that the contact portion 11 contacts the side wall surface of the rotor of the bearing, thereby realizing the restriction of the radial movement of the rotor. The second fixing portion 22 fixes the position of the pressing portion 21, so that the pressing portion 1 presses on the end face of the rotor of the bearing, restricting the axial movement of the rotor, and overcoming the radial and axial impact loads of the rotor during the transportation of the motor.

[0030] It should be noted that there are various implementation manners for the bearing structure, such as the protective housing of the bearing, or the transportation chassis tooling, the machine base end plate, etc., which are not specifically limited herein. In this embodiment, the first fixing portion 12 and the second fixing portion 22 can be fixedly installed on the machine base end plate of the bearing, or can be fixedly installed on the transportation chassis of the bearing, as long as the fixed installation of the first fixing portion 12 and the second fixing portion 22 can be realized.

[0031] It should be noted that there are various implementation manners for the contact portion 11. In this embodiment, the contact portion 11 includes a contact plate. In this embodiment, the side wall surface of the rotor is contacted through the plate to facilitate hard contact and ensure that the rotor does not shake.

[0032] Furthermore, a limiting groove is formed on the contact plate 11, and the limiting groove is used to accommodate the rotor of the bearing. In this embodiment, the rotor of the bearing is accommodated through the limiting groove, ensuring that the rotor can be restricted on the contact plate and avoiding the separation of the rotor and the contact plate during shaking, thus ensuring the stable contact of the contact portion 11.

[0033] It should be noted that in this embodiment, the abutting plate 11 includes an abutting semi-ring, and the inner side of the abutting semi-ring forms the limiting groove. The abutting semi-ring is sleeved on the side wall of the rotor in such a way that the structure is simple and reliable.

[0034] In addition, the first fixing portion 12 includes a fixing seat. The fixing seat includes an installation end and a connection end which are arranged oppositely. The installation end is used for installing on the bearing supporting structure, and the connection end is fixedly connected to the abutting portion. In this embodiment, the first fixing portion 12 is formed by the fixing seat, and the fixing seat and the abutting plate are fixedly connected, so that the abutting plate remains fixed in position relative to the supporting structure, and further abuts tightly against the bearing, avoiding the bearing from generating a position in the radial direction, thereby protecting the bearing from generating radial displacement.

[0035] It should be noted that the abutting portion 11 is fixedly installed on the connection end. Among them, there are various ways of fixed installation. For example, the abutting portion 11 is directly installed on the connection end by welding or bolting.

[0036] Specifically, in this embodiment, please refer to Figure 2 , the radial fixing device 1 further includes a radial pull rod 13. The two ends of the radial pull rod 13 are respectively fixedly installed on the abutting plate and the fixing seat. In this embodiment, the fixing connection between the abutting plate and the fixing seat is realized through the radial pull rod 13, which can withstand a large impact. At the same time, it can adapt to different installation angles and installation environments.

[0037] It should be noted that in this embodiment, the abutting plate is installed on the fixing seat through the radial pull rod 13, and the abutting plate and the fixing seat are spaced apart. The rotor of the bearing can be arranged between the abutting plate and the fixing seat, and the radial movement of the rotor of the bearing is controlled by the tension. It is also possible to make the rotor outside the abutting plate and the fixing seat, and the radial movement of the rotor is controlled by the pressure.

[0038] It should be noted that the two ends of the radial pull rod 13 are respectively fixed to the abutting plate and the fixing seat, and there are various fixing methods. For example, it is fixed by welding.

[0039] Specifically, in this embodiment, a first threaded hole is formed on the abutting plate, and a first external thread is formed on the outer sidewall of the radial pull rod 13. The radial pull rod is threadedly installed into the first threaded hole. In this embodiment, the radial pull rod 13 and the abutting plate are fixed by means of threaded connection, which can be quickly disassembled and installed. At the same time, the connection position between the radial pull rod 13 and the abutting plate can be adjusted by rotating the radial pull rod 13, so as to adjust the abutting force of the abutting plate on the rotor of the bearing, accurately control the magnitude of the torque, and control the radial preload force.

[0040] Similarly, a second threaded hole is formed on the fixing seat, and a second external thread is formed on the outer sidewall of the radial pull rod. The radial pull rod 13 is threadedly installed into the second threaded hole. In this embodiment, the radial pull rod 13 and the fixing seat are fixedly connected by threaded connection. After the abutting plate is abutted against the rotor, the magnitude of the torque can be adjusted by adjusting the connection between the radial pull rod 13 and the fixing seat, and the radial preload force can be controlled.

[0041] It should be noted that in the connection methods of the above-mentioned radial pull rod 13 and the fixing seat, and the radial pull rod 13 and the abutting plate, either one can exist, or both can exist at the same time, and no specific limitation is made here.

[0042] In this embodiment of China, both ends of the radial pull rod 13 are installed on the fixing seat and the abutting plate by means of threaded connection, so as to facilitate torque adjustment in different directions. At the same time, the distance between the abutting plate and the fixing seat can be adjusted to facilitate adaptation to bearings of different sizes.

[0043] On the other hand, the abutting portion and the first fixing portion form a radial limiting group. There are two radial limiting groups, and the two radial limiting groups are respectively used to be arranged at both ends of the rotor of the bearing. In this embodiment, there are two radial limiting groups, which perform radial limiting at both ends of the bearing respectively, and can avoid the rotor generating a certain offset inside the bearing caused by unilateral limiting, and press from both sides at the same time to ensure the safety of the rotor.

[0044] It should be noted that the abutting surfaces of the two abutting plates can be arranged in the same direction or at an angle. In this embodiment, the abutting surfaces of the two abutting plates are arranged at an angle, so as to perform abutting limit from different directions, so as to ensure that the rotor will not generate position offset under high pressure.

[0045] On the other hand, the pressing part 21 includes a pressing plate, and one end face of the pressing plate forms a pressing surface for pressing against the rotor end face of the bearing. In this embodiment, by pressing the rotor end face of the bearing, the position of the rotor in the axial direction is pressed and limited to prevent axial movement, with a simple and reliable structure, offsetting the axial impact force of the rotor.

[0046] It should be noted that, to facilitate the pressing plate pressing against the end face of the rotor, a receiving groove is formed on the pressing plate for receiving the rotor end of the bearing to prevent the rotor from wobbling on the pressing plate.

[0047] Furthermore, the second fixing part 22 includes an axial pull rod. One end of the axial pull rod is fixed to the pressing plate, and the other end is used for fixedly connecting to the bearing support structure. In this embodiment, the pressing plate is fixed to the bearing support structure by means of a pull rod, and the axial pre-tightening force can be controlled according to the installation torque of the pull rod.

[0048] Even further, a through hole is formed through the pressing plate, and a third external thread is formed on the outer side wall of the axial pull rod; the second fixing part further includes a fixing nut. The axial pull rod passes through the through hole and is threadedly connected to the fixed thread. In this embodiment, the pressing plate is installed on the bearing pull rod by means of a nut, which is convenient for the installation of the pressing plate. After the axial pull rod is installed, the pressing plate can be installed on the bearing pull rod by means of bolt connection with the nut, with a simple and reliable structure.

[0049] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A bearing transportation protection device, characterized in that: include: A radial fixing device, comprising an abutting portion and a first fixing portion, wherein the abutting portion is fixedly mounted on the first fixing portion, the abutting portion is used to abut against a rotor side wall surface of the bearing, and the first fixing portion is used to be fixedly mounted on a bearing structure of the bearing; and, The axial fixing device comprises a clamping part and a second fixing part, wherein the clamping part is fixedly mounted on the second fixing part, the clamping part is used to abut against the rotor end face of the bearing, and the second fixing part is used to be fixed to the bearing structure of the bearing.

2. The bearing transport protection device according to claim 1, characterized in that: The abutting portion includes an abutting plate, one end surface of which forms an abutting surface, and the abutting surface is used to abut against a rotor side wall surface of the bearing.

3. The bearing transportation protection device according to claim 2, characterized in that: A limiting groove is formed on the abutting surface, and the limiting groove is used to accommodate the rotor of the bearing.

4. The bearing transport protection device according to claim 2, characterized in that: The first fixing portion includes a fixing seat, and the fixing seat includes a mounting end and a connecting end which are arranged opposite to each other. The mounting end is used for being mounted on the bearing structure of the bearing, and the connecting end is fixedly connected to the abutting portion.

5. The bearing transportation protection device according to claim 4, characterized in that: The radial fixing device further comprises a radial pull rod, and two ends of the radial pull rod are respectively fixedly mounted on the abutment plate and the fixing seat.

6. The bearing transport protection device according to claim 5, characterized in that: A first threaded hole is formed on the abutment plate, a first external thread is formed on the outer side wall of the radial pull rod, and the radial pull rod is threadably installed in the first threaded hole; and / or, The fixing seat is formed with a second threaded hole, the outer side wall of the radial pull rod is formed with a second external thread, and the radial pull rod is threadably installed in the second threaded hole.

7. The bearing transportation protection device according to claim 1, characterized in that: The abutting portion and the first fixing portion form a radial limiting group. Two radial limiting groups are provided. The two radial limiting groups are respectively arranged at two ends of the rotor of the bearing.

8. The bearing transportation protection device according to claim 1, characterized in that: The clamping portion comprises a clamping plate, one end surface of which forms a clamping surface, and the clamping surface is used to be clamped onto the rotor end surface of the bearing.

9. The bearing transportation protection device according to claim 8, characterized in that: The second fixing portion comprises an axial pull rod, one end of which is fixed to the clamping plate, and the other end of which is fixedly connected to the bearing structure of the bearing.

10. The bearing transportation protection device according to claim 1, characterized in that: The clamping plate is provided with a through hole, and the outer side wall of the axial pull rod is formed with an external thread; The second fixing portion further includes a fixing nut, the axial pull rod is inserted into the through hole and is threadedly connected to the fixing thread.

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