Large rotating mechanism

Abstract

The invention belongs to the technical field of mechanical engineering, and provides a large rotating mechanism which is provided with a sectional type bearing body, supporting pieces distributed up and down, a modular rotating body and a main and standby dual-driving device, during working, a motor shaft of the driving device drives a driving wheel with differential transmission ratios, driven wheels on the supporting pieces are driven through belt / gear / chain transmission pieces, and the driving wheel is driven to rotate; the rotating body is further driven to stably rotate around the bearing body; and the standby driving device realizes seamless switching when a fault occurs, so that double insurance is ensured. The problems that in the prior art, large components are difficult to manufacture and install, a single-drive system is insufficient in reliability, transmission mode adaptability is poor, and rotation stability under the heavy load working condition is insufficient are solved, and the practicability, reliability and dynamic balance of the mechanism are remarkably improved. The mechanism is used in a ship propulsion system, can improve the thrust efficiency, and has the advantages of low processing cost, convenience in maintenance, high operation precision, long service life and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical engineering, in particular to a large-scale rotating mechanism. Background Art

[0002] In the fields of ship propulsion, wind power generation, aerospace, industrial equipment, engineering machinery, energy equipment, etc., large rotating mechanisms are widely used as core transmission components in equipment operation, material handling, precision positioning and other scenarios. Large rotating mechanisms in the existing technology usually adopt an integral carrier and rotating body structure. The carrier is mostly a single column and the rotating body is mostly an integral cylinder. This structure faces problems such as large processing size, difficult precision control, and inconvenient transportation and installation during manufacturing. Especially for ultra-large equipment, the processing cost and installation difficulty of the integral structure are significantly increased.

[0003] In terms of drive system design, traditional large-scale rotating mechanisms mostly use a single drive device. Once a drive component, such as a motor or transmission part, fails, it is easy to cause the entire mechanism to shut down. The reliability is insufficient, and the transmission structure is fixed. It is difficult to flexibly select an appropriate transmission method according to different load, speed and other working conditions, and its applicability is limited.

[0004] In terms of support and rotation stability, the existing support structure is usually not designed with upper and lower segments. The positioning and rotation connection between the rotating body and the carrier relies on a single bearing structure, which makes it difficult to balance the weight distribution of large rotating bodies. Problems such as overload and vibration during rotation are prone to occur. The rotating body may deviate under high-speed or heavy-load conditions, affecting the operating accuracy and life of the mechanism.

[0005] In view of the problems existing in the above-mentioned existing technologies, such as difficulty in manufacturing and installation, insufficient drive reliability, poor transmission adaptability, and lack of rotational stability, there is an urgent need to provide a large-scale rotating mechanism with optimized structure, and to improve the practicality and reliability of the mechanism through technical means such as modular segmented design, redundant configuration of main and standby drives, and diversified transmission structure selection. Summary of the Invention

[0006] The present invention provides a large-scale rotating mechanism in which a carrier and a rotating body are arranged in sections, supporting parts are distributed up and down and connected through bearings, and the mechanism is equipped with main and standby driving devices and an optional transmission structure.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A large rotating mechanism includes a carrier, a support, a rotating body, a driving device and a bearing assembly, wherein the carrier is arranged inside the large rotating mechanism; the rotating body can rotate around the carrier; the support supports the rotating body on the carrier, the outer ring of the support is fixedly connected to the rotating body, and the inner ring is arranged on the carrier through a center sleeve; the driving device is arranged on the carrier to drive the rotating body to rotate; the driving device includes a motor, the motor is fixed to the carrier through a connecting seat, a driving wheel is provided on the motor shaft, and a driven wheel is provided on the support, and the driving wheel drives the driven wheel to rotate through a transmission member, and the bearing assembly includes a load-bearing bearing and a rotating bearing, the load-bearing bearing is used to axially position the support and the carrier; the rotating bearing is used to realize the rotating connection between the support and the carrier.

[0009] The driving device includes a main driving device and a backup driving device, which are fixed on the carrier through a connecting seat; the driving wheels are respectively arranged on the motor shafts of the main driving device and the backup driving device; the driven wheel is arranged on the supporting member; and the transmission member connects the driving wheel and the driven wheel.

[0010] The transmission ratio of the main drive device and the transmission ratio of the standby drive device can be set to a different transmission ratio.

[0011] When the main drive device fails, a PLC control system is provided to complete seamless switching of the backup drive device in a short time.

[0012] The transmission member is a belt, gear or chain transmission structure.

[0013] The center sleeve is axially positioned with the carrier through the second bearing bearing, and is rotationally connected with the carrier through the first rotary bearing and the second rotary bearing.

[0014] The driven wheel, the supporting member and the center sleeve are fixedly connected into one body.

[0015] The height of the carrier is 1 / 2 to 2 / 3 of the height of the rotating body.

[0016] It also includes a lower bearing, the inner ring of which is fixed to the carrier, and the outer ring is fixed to the lower part of the rotating body through a lower support rod.

[0017] The rotation axes of the main driving device and the backup driving device are arranged parallel to the rotation axis of the rotating body.

[0018] A first load-bearing bearing is provided between the inner ring of the second rotary bearing and the center sleeve to achieve axial positioning.

[0019] The carrier, support and rotating body can be arranged in sections.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By setting the drive device as a main drive device and a backup drive device, the problem of the rotating mechanism not being able to operate normally when a single drive device fails is solved, achieving double insurance and improving the reliability and stability of the rotating mechanism operation;

[0022] By designing the transmission element as a belt drive structure, gear drive structure or chain drive structure, the diverse needs for transmission methods in different usage scenarios are met, making it easier to select the appropriate transmission structure according to actual conditions and improving the applicability of the drive device;

[0023] By arranging the supporting body into upper columns, middle columns and lower columns, the problem of difficulty in manufacturing and installing large supporting bodies is solved, manufacturing and installation are facilitated, and processing and installation costs are reduced;

[0024] By setting the rotating body as the upper cylinder and the lower cylinder, the problem of inconvenience in manufacturing and installing large cylinders is solved, the processing and assembly of each part are facilitated, and the production efficiency is improved;

[0025] By dividing the support into an upper support and a lower support, and fixing the outer ring of the support to the rotating body as a whole, the center is sleeved on the carrier, positioned with the carrier through the carrier bearing, and rotatably connected with the carrier through the rotating bearing, the problems of manufacturing, installation of the support and supporting balance of the rotating body are solved, which is convenient for manufacturing and installation and ensures the balance and stability of the rotating body during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention.

[0027] In the figure: 1. carrier; 2. support member; 3. rotating body; 4. main driving device; 5. transmission member; 6. main driving wheel; 7. driven wheel; 8. first rotating bearing; 9. second rotating bearing; 10. first load-bearing bearing; 11. second load-bearing bearing; 12. lower bearing; 13. spare driving device; 14. spare driving wheel; 15. center sleeve; 16. lower support rod. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] Example 1

[0030] like Figure 1As shown, a large rotating mechanism has a carrier 1, a support 2, a rotating body 3 and a driving device. The carrier 1 is arranged inside the large rotating mechanism, and the support 2 supports the rotating body 3 on the carrier 1. The rotating body 3 rotates around the carrier 1 when the large rotating mechanism is running. The driving device is arranged on the carrier 1 to drive the rotating body 3 to rotate. The driving device includes a motor, which is fixed to the carrier 1 through a motor connecting seat. A main driving wheel 6 is provided on the motor shaft, and a driven wheel 7 is provided on the support 2. The main driving wheel 6 drives the driven wheel 7 to rotate through the transmission member 5. The rotation of the driven wheel 7 drives the support 2 and the rotating body 3 to rotate together;

[0031] For double insurance and balance, the drive device can be set as a main drive device 4 and a backup drive device 13. They are symmetrically arranged on both sides of the carrier 1, with their rotation axes substantially parallel to the rotation axis of the rotating body 3. A backup driving wheel 14 is provided on the motor shaft of the backup drive device 13.

[0032] The transmission ratio of the main drive device 4 and the transmission ratio of the backup drive device 13 can be set to a different transmission ratio.

[0033] When the main drive device 4 fails, a PLC control system is provided to complete seamless switching of the backup drive device 13 in a short time (within 2 seconds).

[0034] To facilitate manufacturing and installation, the carrier 1 is a column, which can be configured as an upper column, an intermediate column and a lower column;

[0035] The rotating body 3 is a large cylinder, which can be divided into an upper cylinder and a lower cylinder for ease of manufacture and installation;

[0036] The transmission member 5 is a belt transmission structure, a gear transmission structure or a chain transmission structure;

[0037] The outer ring of the support member 2 is fixedly connected to the rotating body 3 as a whole, and the inner ring of the support member 2 is fixedly connected to the center sleeve 15 as a whole. The center sleeve 15 is sleeved on the carrier body 1 and is positioned with the carrier body 1 through the second load-bearing bearing 11. It is rotatably connected to the carrier body 1 through the first rotary bearing 8 and the second rotary bearing 9. The inner ring of the second rotary bearing 9 and the center sleeve 15 are positioned by the first load-bearing bearing 10.

[0038] To facilitate manufacturing and installation, and for balance, the support member 2 can be divided into an upper support member and a lower support member.

[0039] The carrier 1 is a column, which is divided into an upper column, a middle column and a lower column.

[0040] The rotating body 3 is a large cylinder, which is divided into an upper cylinder and a lower cylinder.

[0041] The height of the carrier 1 is 1 / 2-2 / 3 of the height of the rotating body 3, which can form an optimal supporting torque ratio.

[0042] The driven wheel 7 , the support member 2 and the center sleeve 15 are fixedly connected as a whole. The driven wheel 7 and the support member 2 should be located between the first rotary bearing 8 and the second rotary bearing 9 in the height direction.

[0043] Among them, the rotation axes of the lower bearing 12, the second load-bearing bearing 11, the first rotary bearing 8, and the second rotary bearing 9 basically coincide with each other. The inner ring of the lower bearing 12 is fixed on the carrier 1, and the outer ring is fixed to the lower support rod 16. The lower support rod 16 is fixed to the lower part of the rotating body 3.

[0044] Working principle: The motor of the main drive device 4 is started, and the motor is fixed to the carrier 1 through the motor connector. The motor shaft drives the main driving wheel 6 to rotate. The main driving wheel 6 drives the driven wheel 7 on the support 2 through a transmission member 5 such as a belt, gear or chain. Since the outer ring of the support 2 is fixedly connected to the rotating body 3, the rotation of the driven wheel 7 drives the support 2 and the rotating body 3 to rotate around the carrier 1. When the main drive device 4 fails, the backup drive device 4 starts, takes over the driving task, and maintains the operation of the mechanism. The segmented design of the carrier 1, rotating body 3 and support 2 facilitates manufacturing and installation. The load-bearing bearing and the rotating bearing ensure the positioning and rotational connection of the support 2 and the carrier 1, ensuring the balance and stability of the rotation process.

[0045] In summary, the large-scale rotating mechanism of the present invention provides an innovative solution and has broad market application prospects.

[0046] It should be noted that the parts not involved in the present invention are the same as the existing technology or can be implemented by using the existing technology.

[0047] In addition, in the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "set," and "provided with" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific contexts.

[0048] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may modify or make equivalent substitutions to the present invention without departing from the spirit and scope of the technical solution of the present invention. Such modified or equivalent substitutions shall be within the scope of the technical solution for which protection is sought, provided that they do not depart from the core design principles and functional characteristics of the present invention.

Claims

1. A large rotating mechanism comprising a carrier (1), a support (2), a rotating body (3) and a driving device (4), wherein the carrier (1) is arranged inside the large rotating mechanism, the support (2) supports the rotating body (3) on the carrier (1), the rotating body (3) rotates around the carrier (1) when the large rotating mechanism is in operation, and the driving device (4) is arranged on the carrier (1) to drive the rotating body (3) to rotate, characterized in that: The driving device (4) comprises a motor, which is fixed to the carrier (1) via a motor connecting seat. A driving wheel (6) is provided on the motor shaft, and a driven wheel (7) is provided on the support member (2). The driving wheel (6) drives the driven wheel (7) to rotate via a transmission member (5). The rotation of the driven wheel (7) drives the support member (2) and the rotating body (3) to rotate together. The rotation axis of the driving device (4) is parallel to the rotation axis of the rotating body (3).

2. The large-scale rotating mechanism according to claim 1, characterized in that: The driving device comprises a main driving device (4) and a backup driving device (13), which are evenly fixed on both sides of a carrier (1) through a connecting seat; a driving wheel (6) is arranged on the motor shaft of the main driving device (4), a driving wheel (14) is arranged on the motor shaft of the backup driving device (13), a driven wheel (7) is arranged on the supporting member (2), a transmission member (5) connects the driving wheel (6) and the driven wheel (7), and the transmission member (5) connects the driving wheel (14) and the driven wheel (7).

3. The large-scale rotating mechanism according to claim 1, characterized in that: The transmission member (5) is a belt transmission structure, a gear transmission structure or a chain transmission structure.

4. The large-scale rotating mechanism according to claim 1, characterized in that: The outer ring of the support member (2) is fixedly connected to the rotating body (3), and the inner ring is sleeved on the carrier (1) through a center sleeve (15). The center sleeve (15) is axially positioned with the carrier (1) through a second bearing (11) and is rotationally connected to the carrier (1) through a first rotating bearing (8) and a second rotating bearing (9). The inner ring of the rotating bearing (9) and the center sleeve (15) are positioned through the first bearing bearing (10).

5. The large-scale rotating mechanism according to claim 4, characterized in that: The driven wheel (7), the support member (2) and the center sleeve (15) are fixedly connected as a whole, and the driven wheel (7) is located between the first rotary bearing (8) and the second rotary bearing (9).

6. The large-scale rotating mechanism according to claim 1, characterized in that: The height of the carrier (1) is 1 / 2 to 2 / 3 of the height of the rotating body (3).

7. The large-scale rotating mechanism according to claim 1, characterized in that: It also includes a lower bearing (12), the inner ring of which is fixed to the carrier (1), and the outer ring is fixed to the lower part of the rotating body (3) through a lower support rod (16).

8. The large-scale rotating mechanism according to claim 2, characterized in that: The rotation axes of the main drive device (4) and the backup drive device (13) are arranged parallel to the rotation axis of the rotating body (3).

9. The large-scale rotating mechanism according to claim 2, characterized in that: The transmission ratio of the main drive device (4) can be set to a different transmission ratio from the transmission ratio of the backup drive device (13). When the main drive device (4) fails, a PLC control system is provided to operate the backup drive device (13).

10. The large-scale rotating mechanism according to claim 1, characterized in that: The carrier (1), support member (2), and rotating body (3) can be manufactured separately and assembled and fixed into one piece when in use.

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