One-way power gear box and power system

Abstract

This application discloses a unidirectional power gearbox and power system. The unidirectional power gearbox includes: a housing; a power input gear; an adjusting component; a reverse power output gear and a forward power output gear; and a reversing gear. When the input direction of the power input gear is a first direction, the adjusting component meshes with the forward power output gear; when the input direction is a second direction, the adjusting component meshes with the reversing gear. Regardless of the direction of power input, the unidirectional power gearbox provided by this application ensures that the drive direction output via the reverse and forward power output gears is fixed. This improves the efficiency of adjusting the steering direction after maintenance of the power source of rotating equipment, reduces work time, is simple and convenient, automatically completes direction conversion, saves manpower and time, and avoids the risk of equipment damage due to incorrect power source steering, eliminating the need to adjust the power source steering.

Description

Technical Field

[0001] This application relates to the field of drive technology, and in particular to a one-way power gearbox and a power system. Background Technology

[0002] Currently, most rotating equipment loads in nuclear power plants are powered by three-phase motors. These motors rely on a three-phase power supply; if a phase change occurs upstream of the three-phase power supply, the direction of rotation of the motor will also change, meaning the running direction of the rotating equipment load will change. This is unacceptable for a nuclear power plant's operating system. Any change in running direction could potentially cause irreversible and severe damage to the system and equipment itself. The uncertainty of the rotating equipment load's running direction will impact the stable operation of the system.

[0003] There are several common reasons why the running direction of the power source for rotating equipment might change: 1. During the disassembly and inspection of a three-phase motor, if the operator overlooks changes in the power cable or internal wiring of the motor during the removal and reassembly process, the motor's running direction may change. 2. When a previously used three-phase motor is damaged and a new motor is installed, the running direction cannot be determined before the new motor is powered on for verification. 3. During a power plant overhaul, if the distribution panel is shut down for maintenance and the three-phase motor power switch is located on the distribution panel, changes in the internal wiring of the switch after maintenance may alter the output phase sequence, thus changing the running direction of the downstream three-phase motor. 4. When replacing and rewiring the three-phase motor cable, if the phase sequence differs from the original, the downstream three-phase motor may also change its running direction due to the changed phase sequence. In summary, there are multiple situations that can cause the running direction of a three-phase motor, which serves as the power source for rotating equipment, to change. This poses a significant risk of damage to the normal operation of the rotating equipment load, and the uncertainty of the rotating equipment load's running direction will also affect the stable operation of the system. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] Therefore, a first aspect of the present invention provides a unidirectional power gearbox.

[0006] A second aspect of the present invention provides a unidirectional power gearbox.

[0007] In view of this, a unidirectional power gearbox is provided according to a first aspect of the embodiments of this application, comprising:

[0008] Box;

[0009] A power input gear is disposed inside the housing and is used to connect to a power source;

[0010] The adjusting component engages with the power input gear;

[0011] A reverse power output gear and a forward power output gear, wherein the reverse power output gear meshes with the forward power output gear;

[0012] A reversing gear meshes with the forward power output gear, wherein when the input direction of the power input gear is a first direction, the adjusting component meshes with the forward power output gear, and when the input direction is a second direction, the adjusting component meshes with the reversing gear.

[0013] In one feasible implementation, the regulating component includes:

[0014] A positioning gear meshes with the power input gear;

[0015] The dynamic gear meshes with the positioning gear;

[0016] A gear carrier is rotatably connected to the positioning gear, and the dynamic gear is rotatably connected to the gear carrier;

[0017] A limiting cam is disposed on the power input gear and is used to abut against the gear carrier;

[0018] Specifically, when the input direction of the power input gear is the first direction, the dynamic gear meshes with the positive power output gear; when the input direction is the second direction, the dynamic gear meshes with the reversing gear.

[0019] In one feasible implementation, the unidirectional power gearbox further includes:

[0020] A damping wheel is mounted on the power input gear, and a limiting cam is mounted on the damping wheel.

[0021] In one feasible implementation, the damping wheel is coaxially arranged with the power input gear, and damping oil is filled between the damping wheel and the power input gear.

[0022] In one feasible implementation, the gear carrier has a limiting portion formed near the end of the power input gear, and the limiting cam is used to abut against the limiting portion.

[0023] In one feasible implementation, a power input window is provided on the housing, and the power input window is arranged opposite to the power input gear.

[0024] In one feasible implementation, the housing is provided with a reverse power output window, which is arranged opposite to the reverse power output gear.

[0025] In one feasible implementation, the housing is provided with a positive power output window, which is arranged opposite to the positive power output gear.

[0026] In one feasible implementation, the reverse power output window and the forward power output window are arranged at different heights on the housing.

[0027] A second aspect of the embodiments of this application provides a power system comprising:

[0028] A unidirectional power gearbox as described in any of the above technical solutions; and a motor connected to the power input gear of the unidirectional power gearbox.

[0029] Compared with the prior art, the present invention has at least the following beneficial effects: The unidirectional power gearbox provided in the embodiments of this application includes a housing and a power input gear, an adjustment component, a reverse power output gear, a forward power output gear and a reversing gear disposed within the housing. When the input direction of the power input gear is a first direction, the adjustment component meshes with the forward power output gear, and when the input direction is a second direction, the adjustment component meshes with the reversing gear. Taking counterclockwise rotation as an example, in this case, the adjusting component will mesh with the forward power output gear, which can output power in the first direction. The reverse power output gear meshes with the forward power output gear, and the output direction of the reverse power output gear will change, outputting power in the second direction, which is clockwise. In this case, the adjusting component will mesh with the reversing gear, which will then mesh with the forward power output gear. Through the reversing gear, a reversal can be performed, so that the forward power output gear still outputs power in the first direction, while the reverse power output gear meshes with the forward power output gear, and the output direction of the reverse power output gear will change, outputting power in the second direction. Based on this, the unidirectional power gearbox provided in this application embodiment, regardless of the direction of power input, outputs a fixed driving direction via the reverse power output gear and the forward power output gear. This improves the efficiency of adjusting the steering direction after maintenance of the power source of rotating equipment, reduces work time, and achieves automatic input-output conversion. It is simple and convenient, automatically completes the direction conversion, saves manpower and time, and avoids the risk of equipment damage caused by incorrect power source steering without the need to adjust the power source steering. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0031] Figure 1 A schematic structural diagram of a one-way power gearbox according to an embodiment of this application.

[0032] in, Figure 1 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0033] 1. Housing, 2. Reversing gear, 3. Reverse power output window, 4. Reverse power output gear, 5. Forward power output gear, 6. Forward power output window, 7. Dynamic gear, 8. Gear carrier, 9. Positioning gear, 10. Power input gear, 11. Damping wheel, 12. Power input window, 13. Limit cam. Detailed Implementation

[0034] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0035] like Figure 1 As shown, a unidirectional power gearbox is provided according to a first aspect of the embodiments of this application, comprising: a housing 1; a power input gear 10 disposed in the housing 1 for connecting to a power source; an adjusting component meshing with the power input gear 10; a reverse power output gear 4 and a forward power output gear 5, the reverse power output gear 4 meshing with the forward power output gear 5; and a reversing gear 2 meshing with the forward power output gear 5, wherein when the input direction of the power input gear 10 is a first direction, the adjusting component meshes with the forward power output gear 5, and when the input direction is a second direction, the adjusting component meshes with the reversing gear 2.

[0036] The unidirectional power gearbox provided in this application embodiment includes a housing 1 and a power input gear 10, an adjustment component, a reverse power output gear 4, a forward power output gear 5, and a reversing gear 2 disposed within the housing 1. When the input direction of the power input gear 10 is a first direction, the adjustment component meshes with the forward power output gear 5, and when the input direction is a second direction, the adjustment component meshes with the reversing gear 2. Taking counterclockwise rotation as an example, in this case, the adjusting component will mesh with the forward power output gear 5, which can output power in the first direction. The reverse power output gear 4 meshes with the forward power output gear 5, and the output direction of the reverse power output gear 4 will change, outputting power in the second direction, which is clockwise. In this case, the adjusting component will mesh with the reversing gear 2, which in turn meshes with the forward power output gear 5. Through the reversing gear 2, a reversal can be performed, so that the forward power output gear 5 still outputs power in the first direction, while the reverse power output gear 4 meshes with the forward power output gear 5, and the output direction of the reverse power output gear 4 will change, outputting power in the second direction. Based on this, the unidirectional power gearbox provided in this application embodiment, regardless of the direction in which power is input, outputs a fixed driving direction via the reverse power output gear 4 and the forward power output gear 5. This improves the efficiency of adjusting the steering direction after maintenance of the power source of rotating equipment, reduces work time, and achieves automatic input-output conversion. It is simple and convenient, automatically completes the direction conversion, saves manpower and time, and avoids the risk of equipment damage caused by incorrect power source steering without the need to adjust the power source steering.

[0037] In one feasible implementation, the adjustment assembly includes: a positioning gear 9 meshing with a power input gear 10; a dynamic gear 7 meshing with the positioning gear 9; a gear carrier 8 rotatably connected to the positioning gear 9, and the dynamic gear 7 rotatably connected to the gear carrier 8; and a limiting cam 13 disposed on the power input gear 10 for abutting against the gear carrier 8; wherein, when the input direction of the power input gear 10 is a first direction, the dynamic gear 7 meshes with the forward power output gear 5, and when the input direction is a second direction, the dynamic gear 7 meshes with the reversing gear 2.

[0038] This technical solution further provides the structural composition of the adjustment component, which may include a positioning gear 9, a dynamic gear 7, a gear carrier 8, and a limiting cam 13. In terms of transmission, when the power input gear 10 is connected to power, it drives the positioning gear 9 to rotate, which in turn drives the dynamic gear 7 to rotate. When the input direction of the power input gear 10 is the first direction, it drives the limiting cam 13 to abut against the gear carrier 8. As the power input gear 10 rotates, it drives the gear carrier 8 to rotate, thereby engaging the dynamic gear 7 with the forward power output gear 5. When the input direction of the power input gear 10 is the second direction, it drives the limiting cam 13 to abut against the gear carrier 8. As the power input gear 10 rotates, it drives the gear carrier 8 to rotate, causing the dynamic gear 7 to engage with the reversing gear 2. This achieves automatic selection and transmission of direction, avoiding manual selection and transmission. The final direction is determined by the reversing gear 2 and the forward power output gear 5 of this device. The final power output is achieved through the reverse power output gear 4 and the forward power output gear 5 of this device. Using this device enables automatic input-output conversion, which is simple and convenient, automatically completing the direction change, saving manpower and time, and eliminating the need to adjust the power source direction, thus avoiding the risk of equipment damage due to incorrect power source direction.

[0039] like Figure 1 As shown, in some examples, through the arrangement of the gear carrier 8, the gear carrier 8 can accept the direction transmitted by the limiting cam 13 and transmit it to the dynamic gear 7 with the positioning gear 9 as the center.

[0040] In one feasible implementation, the one-way power gearbox further includes: a damping wheel 11 disposed on the power input gear 10, and a limiting cam 13 disposed on the damping wheel 11.

[0041] In this technical solution, the one-way power gearbox may also include a damping wheel 11. The power direction of the power input gear 10 is detected and transmitted to the subsequent stage through the damping wheel 11 and the limiting cam 13, thus avoiding the risk of human detection of steering.

[0042] In one feasible implementation, the damping wheel 11 is coaxially arranged with the power input gear 10, and damping oil is filled between the damping wheel 11 and the power input gear 10.

[0043] In this technical solution, damping oil is filled between the damping wheel 11 and the power input gear 10, which makes the rotation of the power input gear 10 more stable and safe.

[0044] In one feasible implementation, a limiting portion is formed on the end of the gear carrier 8 near the power input gear 10, and a limiting cam 13 is used to abut against the limiting portion.

[0045] In this technical solution, the formation of the limiting part facilitates the limiting cam 13 to abut against the gear carrier 8.

[0046] In one feasible implementation, a power input window 12 is provided on the housing 1, and the power input window 12 is arranged opposite to the power input gear 10.

[0047] In this technical solution, a power input window 12 is provided on the housing 1. The power input window 12 is arranged opposite to the power input gear 10. This arrangement facilitates the connection of an external power source to the power input gear 10.

[0048] In one feasible implementation, the housing 1 is provided with a reverse power output window 3, which is arranged opposite to the reverse power output gear 4.

[0049] In this technical solution, a reverse power output window 3 is provided on the housing 1. The reverse power output window 3 is arranged opposite to the reverse power output gear 4. This arrangement facilitates the output of power by the reverse power output gear 4.

[0050] In one feasible implementation, a forward power output window 6 is provided on the housing 1, and the forward power output window 6 is arranged opposite to the forward power output gear 5.

[0051] In this technical solution, a forward power output window 6 is provided on the housing 1. The forward power output window 6 is arranged opposite to the forward power output gear 5. This arrangement facilitates the output of power by the forward power output window 6.

[0052] In one feasible implementation, the reverse power output window 3 and the forward power output window 6 are arranged at different heights on the housing 1.

[0053] In this technical solution, the reverse power output window 3 and the forward power output window 6 are arranged at different heights on the housing 1. This arrangement can prevent operators from confusing the reverse power output window 3 and the forward power output window 6, and can make the power output and use safer.

[0054] According to a second aspect of the embodiments of this application, a power system is provided, comprising: a one-way power gearbox as described in any of the above technical solutions; and a motor connected to a power input gear 10 of the one-way power gearbox.

[0055] The power system provided in this embodiment includes a unidirectional power gearbox and a motor. During operation, regardless of the direction of rotation of the motor inputting power to the power input gear 10, the reverse power output gear 4 and the forward power output gear 5 can output power in a fixed direction. When the motor outputs power in the first direction, the adjusting component meshes with the forward power output gear 5, allowing the forward power output gear 5 to output power in the first direction. The reverse power output gear 4 meshes with the forward power output gear 5, changing its output direction to output power in the second direction. When the motor outputs power in the second direction, the adjusting component meshes with the reversing gear 2, which then meshes with the forward power output gear 5. This reversal allows the forward power output gear 5 to continue outputting power in the first direction, while the reverse power output gear 4 meshes with the forward power output gear 5, changing its output direction to output power in the second direction. Based on this, the drive direction output by the power system provided in this application embodiment is fixed via the reverse power output gear 4 and the forward power output gear 5. This can improve the efficiency of adjusting the steering direction after maintenance of the power source of rotating equipment, reduce the operation time, realize automatic input-output conversion, which is simple and convenient, automatically completes the direction conversion, saves manpower and time, and avoids the risk of equipment damage caused by incorrect power source steering without adjusting the power source steering.

[0056] Example 1

[0057] like Figure 1 As shown, the unidirectional power gearbox provided in this application embodiment includes a housing 1, on which a reverse power output window 3, a forward power output window 6, and a power input window 12 are provided; inside the housing 1 are: a reversing gear 2, a reverse power output gear 4, a forward power output gear 5, a dynamic gear 7, a gear carrier 8, a positioning gear 9, a power input gear 10, a damping wheel 11, and a limiting cam 13.

[0058] The housing 1 is made of steel, and its specific dimensions and strength are selected according to actual conditions. It is used for the overall gear assembly. The window size of the reverse power output window 3 is selected according to the actual needs of the equipment and is used for reverse power output. The window size of the forward power output window 6 is selected according to the actual needs of the equipment and is used for forward power output. The window size of the power input window 12 is selected according to the actual needs of the equipment and is used for the power input interface. The reversing gear 2 is made of steel, and its specific dimensions and strength are selected according to actual conditions. It meshes with the forward power output gear 5. The reverse power output gear 4 is made of steel, and its specific dimensions and strength are selected according to actual conditions. It meshes with the forward power output gear 5. The forward power output gear 5 is made of steel, and its specific dimensions and strength are selected according to actual conditions. It meshes with both the reversing gear 2 and the reverse power output gear 4. The dynamic gear 7 is made of steel, and its specific dimensions and strength are selected according to actual conditions. It meshes with the positioning gear 9. The gear carrier 8 is made of steel. One end is used to fix the dynamic gear 7 and the positioning gear 9 within a radius range, while the other end receives the force transmitted from the limiting cam 13. The positioning gear 9 is made of steel, and its specific size and strength are selected according to the actual situation. It meshes with the dynamic gear 7 and the power input gear 10. The power input gear 10 is made of steel, and its specific size and strength are selected according to the actual situation. It meshes with the positioning gear 9. The damping wheel 11 is made of steel, and its specific size and strength are selected according to the actual situation. It shares a shaft with the power input gear 10, and the two surfaces are filled with damping oil. That is, any movement direction of the power input gear 10 will be transmitted to the damping wheel 11 under the action of the damping oil. The limiting cam 13 is made of steel and is connected to the damping wheel 11. That is, any movement direction of the limiting cam 13 will cause the damping wheel 11 to move together.

[0059] The following is combined with Figure 1 Introducing the usage method of the unidirectional power output gearbox of this invention:

[0060] according to Figure 1 Complete the assembly. Check that each gear rotates smoothly and without jamming in its position.

[0061] The gear to be powered by the external power source is engaged with the power input gear 10 through the power input window 12.

[0062] Start the external power source.

[0063] At this point, two scenarios are possible.

[0064] 1. External power source input is clockwise: The external power source drives the power input gear 10 to start running counterclockwise. The power input gear 10 drives the positioning gear 9 to start running clockwise, and the positioning gear 9 drives the dynamic gear 7 to start running counterclockwise. The power input gear 10 drives the damping wheel 11 and the limiting cam 13 to start running counterclockwise through the damping oil until the limiting cam 13 transmits the force to the gear carrier 8. The gear carrier 8 starts to rotate under the force until the counterclockwise running dynamic gear 7 meshes with the reversing gear 2. The reversing gear 2 starts running clockwise. The clockwise running reversing gear 2 meshes with the forward power output gear 5. The forward power output gear 5 starts running counterclockwise and outputs forward power to the outside through the forward power output window 6. At the same time, the forward power output gear 5 meshes with the reverse power output gear 4. The reverse power output gear 4 starts running clockwise and outputs reverse power to the outside through the reverse power output window 3.

[0065] 2. External power source input is counterclockwise: The external power source drives the power input gear 10 to start running clockwise, which in turn drives the positioning gear 9 to start running counterclockwise. The positioning gear 9 then drives the dynamic gear 7 to start running clockwise. The power input gear 10 drives the damping wheel 11 and the limiting cam 13 to start running clockwise via damping oil, until the limiting cam 13 transmits the force to the gear carrier 8. The gear carrier 8 then rotates under the force until the clockwise running dynamic gear 7 meshes with the forward power output gear 5. The forward power output gear 5 then starts running counterclockwise and outputs forward power to the outside through the forward power output window 6. Simultaneously, the forward power output gear 5 meshes with the reverse power output gear 4, which then starts running clockwise and outputs reverse power to the outside through the reverse power output window 3.

[0066] As can be seen from the above two situations, the running directions of the forward power output gear 5 and the reverse power output gear 4 will not be changed regardless of whether the power input gear 10 accepts clockwise or counterclockwise rotation. That is, no matter whether clockwise or counterclockwise rotation is added through the power input window 12, the output direction of the reverse power output window 3 and the forward power output window 6 will not be changed.

[0067] The one-way power output gearbox functioned normally.

[0068] This device needs to be stored to prevent rust. Special gear oil should be used for maintenance between gears, and other oils should not be used as substitutes for damping oil.

[0069] This unidirectional power gearbox is particularly suitable for determining the direction of rotation of rotating equipment powered by three-phase motors during nuclear power plant maintenance.

[0070] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0071] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0072] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0073] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A unidirectional power gearbox, characterized in that, include: Box; A power input gear is disposed inside the housing and is used to connect to a power source; The adjusting component engages with the power input gear; A reverse power output gear and a forward power output gear, wherein the reverse power output gear meshes with the forward power output gear; A reversing gear meshes with the forward power output gear, wherein when the input direction of the power input gear is a first direction, the adjusting component meshes with the forward power output gear, and when the input direction is a second direction, the adjusting component meshes with the reversing gear. The adjustment component includes: A positioning gear meshes with the power input gear; The dynamic gear meshes with the positioning gear; A gear carrier is rotatably connected to the positioning gear, and the dynamic gear is rotatably connected to the gear carrier; A limiting cam is disposed on the power input gear and is used to abut against the gear carrier; Specifically, when the input direction of the power input gear is the first direction, the dynamic gear meshes with the positive power output gear; when the input direction is the second direction, the dynamic gear meshes with the reversing gear. A damping wheel is mounted on the power input gear, and a limiting cam is mounted on the damping wheel; The damping wheel is coaxially arranged with the power input gear, and damping oil is filled between the damping wheel and the power input gear.

2. The unidirectional power gearbox according to claim 1, characterized in that, The gear carrier has a limiting portion formed near the end of the power input gear, and the limiting cam is used to abut against the limiting portion.

3. The unidirectional power gearbox according to any one of claims 1 to 2, characterized in that, The housing is provided with a power input window, which is positioned opposite to the power input gear.

4. The unidirectional power gearbox according to any one of claims 1 to 2, characterized in that, The housing is provided with a reverse power output window, which is positioned opposite to the reverse power output gear.

5. The unidirectional power gearbox according to claim 4, characterized in that, The housing has a forward power output window, which is positioned opposite to the forward power output gear.

6. The unidirectional power gearbox according to claim 5, characterized in that, The reverse power output window and the forward power output window are arranged at different heights on the housing.

7. A power system, characterized in that, include: The unidirectional power gearbox as described in any one of claims 1 to 6; The motor is connected to the power input gear of the one-way power gearbox.

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