Elastic buffering wind power gear box connecting mechanism with overload protection function

Abstract

The utility model relates to the technical field of wind power gear box equipment, in particular to an elastic buffering wind power gear box connecting mechanism with overload protection, which comprises a wind power gear box body, an overload protection mechanism is arranged on one side of the wind power gear box body, and a second output disc is arranged on one side of the overload protection mechanism; when overload occurs, the metal soft inhaul cable moves in the annular linear sliding rail in the spherical rotating block to drive the limiting block and the spring to work cooperatively. The spring can stretch out and draw back due to force generated by overload, part of energy is absorbed, and the situation that the whole wind power gear box connecting mechanism is seriously damaged due to instant overload is avoided. Meanwhile, the motion range of the metal soft inhaul cable is limited by the limiting block, excessive displacement of the metal soft inhaul cable is prevented, and unlimited transmission of overload energy is avoided. The first rotating shaft body and the first output disc are firmly connected through a bolt, and it is ensured that power is stably transmitted after being output from the wind power gear box body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wind power gear box equipment, in particular to a flexible buffering wind power gear box connecting mechanism with overload protection. BACKGROUND

[0002] In the field of wind power generation, the wind power gear box is a key device that converts the low speed and high torque of the wind wheel into the high speed and low torque required by the generator. However, in actual operation, due to the instability and intermittency of wind energy, the load on the wind wheel often fluctuates, which brings a series of challenges to the wind power gear box. Sudden changes in wind conditions, such as strong winds or gusts, can cause the input torque of the wind power gear box to increase instantaneously, i.e. overload. The traditional wind power gear box connecting mechanism often lacks effective protection mechanisms when facing overload, which can cause the gears, bearings and other key components in the gear box to bear excessive stress, leading to gear tooth surface wear, fatigue fracture, bearing damage, and even the failure of the entire gear box, seriously affecting the normal operation of the wind power system, increasing the maintenance cost and downtime of the equipment, and reducing the efficiency and reliability of wind power generation.

[0003] For the related technology in the above, the inventor finds that the existing device has the following defects: when facing the overload situation often occurring in wind power generation, such as sudden increase in torque caused by strong wind or gust, many devices may simply rely on traditional mechanical structure for power transmission, which can cause excessive torque to act directly on key components when overload occurs. The existing device may not be able to effectively absorb and buffer the overload energy in time, which can easily cause equipment failure, increase the maintenance frequency and downtime of the equipment, and seriously affect the continuity and stability of wind power generation. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of the prior art, in order to solve the problems mentioned in the background art, the present application provides a flexible buffering wind power gear box connecting mechanism with overload protection.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a flexible buffering wind power gear box connecting mechanism with overload protection, comprising a wind power gear box body, an overload protection mechanism is arranged on one side of the wind power gear box body, and a second output disc is arranged on one side of the overload protection mechanism.

[0006] The overload protection mechanism comprises a first rotating shaft body, a first output disc, a first bearing seat, a base, a second bearing seat and a second rotating shaft body, the first rotating shaft body is fixedly installed at an output end of a wind turbine gearbox body, one side of the first rotating shaft body is fixedly connected with the first output disc through bolts, one side of the first rotating shaft body is movably connected with the first bearing seat, the bottom of the first bearing seat is fixedly connected with the base, the top of the base is fixedly installed with the second bearing seat, and one side of the second bearing seat movably sleeves the second rotating shaft body.

[0007] Optionally, the overload protection mechanism further comprises a rotating disc, a spherical rotating block, a metal soft cable, a limiting block, a spring, a protective sleeve, a hinged block body, a hinged seat body and a bundled steel cable, the rotating disc is fixedly installed on one side of the second rotating shaft body, the rotating disc is provided with the spherical rotating block on one side, the spherical rotating block movably sleeves the metal soft cable in the inside, the metal soft cable is fixedly connected with the limiting block on the side close to the rotating disc, the limiting block is fixedly connected with the spring on one side, the metal soft cable is fixedly sleeved with the protective sleeve on one side, the metal soft cable is fixedly connected with the hinged block body on the side close to the first output disc, the hinged block body is hinged on one side of the hinged seat body, the hinged seat body is fixedly connected on one side of the first output disc, and the bundled steel cable is spirally wound on one side of the metal soft cable. The metal soft cable can bear tension, transmit power or force in normal work, and play a buffering and overload protection role through the movement in the spherical rotating block and the cooperation with other components when overload occurs, so that the system is prevented from being damaged due to overload. The bundled steel cable is composed of a plurality of high-strength cables and can bear a force of 5000 to 8000 N, which can enhance the structural strength or assist in transmitting force, and when the system bears a large load, the bundled steel cable can bear the load together with other components to improve the overall load bearing capacity of the system.

[0008] Optionally, the spherical rotating block is a spherical rotating block with a hole penetrating through the side surface, and an annular linear sliding rail is sleeved in the hole.

[0009] Optionally, the diameter of the limiting block is greater than the diameter of the hole in the side surface of the spherical rotating block, and the protective sleeve is an annular buffer sleeve composed of a foamed metal.

[0010] Optionally, the spring is sleeved on one side of the metal soft cable, one end of the spring is fixedly connected with the rotating disc, and the other end is fixedly connected with the limiting block.

[0011] Optionally, the bundled steel cable is composed of a plurality of high-strength cables and can bear a force of 5000 to 8000 N.

[0012] In summary, the present application has the following beneficial technical effects:

[0013] The utility model discloses when using, when overload occurs, the annular straight line slide rail in the spherical rotary block of metal soft cable moves, drives the limit block and spring to work in coordination. The spring will contract and expand because of the force of overload and absorbs part energy, avoids the serious damage of instantaneous overload to the whole wind power gear box connecting mechanism. Meanwhile, the limit block limits the movement range of metal soft cable, prevents its excessive displacement, avoids the unlimited transmission of overload energy. In addition, the hinged structure of hinged block body and hinged seat body can buffer partial overload impact through relative rotation, protects the key components such as first rotary shaft body, second rotary shaft body and wind power gear box body from the damage of overload impact, reduces the equipment failure risk caused by overload, prolongs the service life of equipment, ensures the safe operation of whole wind power system under different wind conditions.

[0014] The utility model discloses when using, the first rotary shaft body and first output disc are firmly connected through bolt, ensure that the power is stably transmitted after output from wind power gear box body. The reasonable cooperation of second rotary shaft body and other components guarantees the continuous transmission of power. In the power transmission process, because the connection between each component is close and stable, such as the good support of bearing seat to rotary shaft, the energy loss in the power transmission process is minimized. Meanwhile, when the system is subjected to dynamic load, through the buffering effect of spring and protection sleeve, the interference of vibration and impact on power transmission is reduced, the stability and high efficiency of power transmission are guaranteed, help to improve the power generation efficiency of whole wind power system, realize more efficient energy conversion and transmission. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of equipment in the embodiment of the application;

[0016] Figure 2 It is the local structure schematic diagram of equipment in the embodiment of the application;

[0017] Figure 3 It is the local structure schematic diagram of overload protection mechanism in the embodiment of the application;

[0018] Figure 4 It is the local structure installation schematic diagram of overload protection mechanism in the embodiment of the application;

[0019] Fig. 1, wind power gear box body;2, overload protection mechanism;201, first rotary shaft body;202, first output disc;203, first bearing seat;204, base;205, second bearing seat;206, second rotary shaft body;207, rotary table;208, spherical rotary block;209, metal soft cable;210, limit block;211, spring;212, protection sleeve;213, hinged block body;214, hinged seat body;215, cluster steel cable;3, second output disc. DETAILED DESCRIPTION

[0020] The application will be further described in detail below with reference to the accompanying drawings. Figures 1-4 The application will be further described in detail below with reference to the accompanying drawings.

[0021] The application discloses a wind turbine gearbox connecting mechanism with overload protection and elastic buffering.

[0022] Please refer to Figure 1 The application discloses a wind turbine gearbox connecting mechanism with overload protection and elastic buffering.

[0023] Please refer to Figures 2 to 4 The overload protection mechanism 2 comprises a first rotating shaft body 201, a first output disc 202, a first bearing seat 203, a base 204, a second bearing seat 205 and a second rotating shaft body 206, the first rotating shaft body 201 is fixedly installed at an output end of the wind turbine gearbox body 1, one side of the first rotating shaft body 201 is fixedly connected with the first output disc 202 through bolts, one side of the first rotating shaft body 201 is movably connected with the first bearing seat 203, the bottom of the first bearing seat 203 is fixedly connected with the base 204, the top of the base 204 is fixedly installed with the second bearing seat 205, and one side of the second bearing seat 205 movably sleeves the second rotating shaft body 206.

[0024] The overload protection mechanism 2 further comprises a rotating disc 207, a spherical rotating block 208, a metal soft cable 209, a limiting block 210, a spring 211, a protective sleeve 212, a hinged block body 213, a hinged seat body 214 and a bundled steel cable 215, the rotating disc 207 is fixedly installed at one side of the second rotating shaft body 206, the one side of the rotating disc 207 is provided with the spherical rotating block 208, the spherical rotating block 208 movably sleeves the metal soft cable 209, the metal soft cable 209 is fixedly connected with the limiting block 210 close to the rotating disc 207, the limiting block 210 is fixedly connected with the spring 211 at one side, the metal soft cable 209 is fixedly sleeved with the protective sleeve 212 at one side, the metal soft cable 209 is fixedly connected with the hinged block body 213 close to the first output disc 202, the hinged block body 213 is hinged at one side of the hinged seat body 214, the hinged seat body 214 is fixedly connected at one side of the first output disc 202, and the bundled steel cable 215 is spirally wound at one side of the metal soft cable 209.

[0025] The spherical rotating block 208 is a spherical rotating block with a hole penetrating through the side surface, and an annular linear sliding rail is sleeved in the hole, and the metal soft cable 209 is movably sleeved in the annular linear sliding rail.

[0026] The diameter of the limiting block 210 is greater than the diameter of the hole on the side of the spherical rotating block 208, and the protective sleeve 212 is an annular buffer sleeve composed of foam metal.

[0027] The spring 211 is sleeved on one side of the metal soft cable 209, and one end of the spring 211 is fixedly connected with the rotating disc 207, and the other end is fixedly connected with the limiting block 210.

[0028] The bundled steel cable 215 is composed of a plurality of high-strength cables and can withstand a force of 5000 to 8000 N.

[0029] Further explanation is needed:

[0030] Power transmission and structural support: The first rotating shaft body 201 is fixedly installed at the output end of the wind power gear box body 1, serving as the starting link of power transmission, which receives power from the gear box and transmits it to the subsequent components. The first output disc 202 is connected to the first rotating shaft body 201 by bolts, ensuring the stability and reliability of power transmission. At the same time, the first bearing seat 203 and the second bearing seat 205 play an important role in this process, which respectively support the first rotating shaft body 201 and the second rotating shaft body 206, so that the two rotating shafts can rotate smoothly, reducing the frictional resistance in the rotating process, and ensuring the efficiency of power transmission. The base 204 provides a solid foundation for the first bearing seat 203 and the second bearing seat 205, bearing the weight of the entire mechanism and various forces generated during work, providing stable structural support for the entire power transmission system, ensuring that the mechanism will not fail due to unstable structure during power transmission.

[0031] Overload protection and buffering: When the system faces an overload situation, such as sudden increase in wind speed, causing the torque in power transmission to exceed the normal range, multiple components in the mechanism work together to protect the system. The metal soft cable 209 will move relatively in the annular linear slide rail inside the spherical rotating block 208, and since one end of it is connected to the limiting block 210, when the metal soft cable 209 moves, the limiting block 210 will be affected, thereby compressing or stretching the spring 211 connected to it. The spring 211 absorbs part of the overload energy through its elastic deformation, playing a buffering and protective role. At the same time, the side of the metal soft cable 209 close to the first output disc 202 is connected by the hinge block body 213 and the hinge seat body 214, and can also be buffered by a certain relative rotation during overload, avoiding the direct impact of excessive impact on the gear box and other core components due to overload, effectively preventing damage caused by overload, and improving the reliability and safety of the entire wind power gear box connecting mechanism.

[0032] Improve the adaptability and stability of the system: the hinge structure of the hinge block body 213 and the hinge seat body 214 makes the system have a certain flexibility during operation, and can make corresponding angle adjustment according to different stress states, so that the mechanism can better adapt to different working conditions and load conditions. The protective sleeve 212 wraps the metal soft cable 209, providing protection for it while also serving as a buffer component to some extent, further enhancing the buffering performance of the system. The bundled steel cable 215 is composed of multiple high-strength cables and can withstand a force of 5000 to 8000N. When the system bears a large load, it can share the load with other components, improving the overall load-bearing capacity of the system. Through the coordinated work of these components, the mechanism 2 enables the entire wind turbine gearbox connecting mechanism to operate stably under various wind conditions and load conditions, prolonging the service life of the equipment and ensuring the stable operation of the wind power generation system.

[0033] The working principle of the above embodiment is:

[0034] First, the wind turbine gearbox body converts the low speed and high torque input from the wind wheel into high speed and low torque output. It uses internal gear combination to change the transmission ratio through the meshing of gears of different sizes, and increases the speed of the rotating power of the wind wheel to prepare for the subsequent power transmission. In this process, the wind turbine gearbox body is the starting point of energy conversion and power transmission in the entire system, which converts wind energy into mechanical energy and outputs power in a form suitable for subsequent equipment to receive.

[0035] Second, the first rotating shaft body receives power from the wind turbine gearbox body and transmits it to the first output disc. The first output disc is firmly connected to the first rotating shaft body by bolts to ensure the stability of power transmission. At the same time, the first rotating shaft body is movably connected with the first bearing seat, and the first bearing seat is installed on the base to provide support and guidance for the rotation of the first rotating shaft body, reducing the friction resistance when it rotates. The first bearing seat and the base together ensure that the first rotating shaft body can rotate stably when transmitting power, avoiding affecting the power transmission efficiency due to uneven stress or excessive friction.

[0036] Then, the power continues to be transmitted to the second rotating shaft body. The second rotating shaft body is supported by the second bearing seat, which is also installed on the base to ensure that the second rotating shaft body can rotate smoothly. The rotating disc on one side of the second rotating shaft body starts to rotate, which cooperates with the spherical rotating block to drive the metal soft cable to move in the annular straight rail inside the spherical rotating block. At this time, the tension or tension of the metal soft cable will be transmitted to the bundled steel cable, spring and other components through the connection relationship with other components. The hinge structure of the hinge block body at one end of the metal soft cable and the hinge seat body allows a certain angle adjustment, providing a certain flexibility and adaptability for the entire system to adapt to different stress conditions.

[0037] Next, in the normal working state, when certain fluctuations or shocks occur during power transmission, the spring will deform according to the force condition, playing a buffering role. The protective sleeve as a protective component of the metal soft cable can not only prevent it from being affected by the external environment, but also absorb part of the impact energy to a certain extent. At the same time, the bundled steel cable will bear a certain tension according to the force condition, and work together with other components to ensure the stable operation of the system. The limiting block limits the movement range of the metal soft cable when it moves, prevents the metal soft cable from being stretched or compressed too much, and avoids damage to the entire system due to abnormal movement.

[0038] Finally, when the system is overloaded, the metal soft cable will displace in the annular linear slide rail of the spherical rotating block, and at the same time drive the limiting block to move, so that the spring is further compressed or stretched to absorb more overload energy. The bundled steel cable will also bear greater tension, and through its high strength characteristics, it ensures that the system will not fail instantly due to overload. Through the coordinated work of these components, including the movement of the metal soft cable, the elastic deformation of the spring, the limitation of the limiting block, and the load bearing of the bundled steel cable, the mechanism disperses and buffers the overload energy, avoids the damage of excessive overload energy to the wind turbine gearbox body and other key components, and ensures the safety of the entire system. The second output disc outputs the processed power to the next stage equipment such as the generator or other transmission devices, completing the power output process of the entire wind power system.

[0039] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A flexible cushioning wind turbine gearbox connecting mechanism with overload protection, comprising a wind turbine gearbox body (1), characterized in that: One side of the wind power gear box body (1) is provided with overload protection mechanism (2), one side of the overload protection mechanism (2) is provided with the second output disc (3); The overload protection mechanism (2) comprises a first rotating shaft body (201), a first output disc (202), a first bearing seat (203), a base (204), a second bearing seat (205) and a second rotating shaft body (206). The first rotating shaft body (201) is fixedly installed at the output end of the wind power gear box body (1). One side of the first rotating shaft body (201) is fixedly connected with the first output disc (202) through bolts. One side of the first rotating shaft body (201) is movably connected with the first bearing seat (203). The bottom of the first bearing seat (203) is fixedly connected with the base (204). The top of the base (204) is fixedly installed with the second bearing seat (205). One side of the second bearing seat (205) is movably sleeved with the second rotating shaft body (206).

2. The elastic buffering wind power gear box connecting mechanism with overload protection according to claim 1, characterized in that: The overload protection mechanism (2) further comprises a rotating disc (207), a spherical rotating block (208), a metal soft cable (209), a limiting block (210), a spring (211), a protective sleeve (212), a hinged block body (213), a hinged seat body (214) and a bundled steel cable (215). The rotating disc (207) is fixedly installed on one side of the second rotating shaft body (206). One side of the rotating disc (207) is provided with the spherical rotating block (208). The spherical rotating block (208) is movably sleeved with the metal soft cable (209) in the inside. The limiting block (210) is fixedly connected on one side of the metal soft cable (209) close to the rotating disc (207). The limiting block (210) is fixedly connected with the spring (211) on one side. The metal soft cable (209) is fixedly sleeved with the protective sleeve (212) on one side. The metal soft cable (209) is fixedly connected with the hinged block body (213) on one side close to the first output disc (202). The hinged block body (213) is hinged on one side of the hinged seat body (214). The hinged seat body (214) is fixedly connected on one side of the first output disc (202). The bundled steel cable (215) is spirally wound on one side of the metal soft cable (209).

3. The elastic buffering wind power gear box connecting mechanism with overload protection according to claim 2, characterized in that: The spherical rotating block (208) is a spherical rotating block with a hole penetrating through the side surface, and an annular linear slide rail is sleeved in the hole.

4. The elastic buffering wind power gear box connecting mechanism with overload protection according to claim 2, characterized in that: The diameter of the limiting block (210) is greater than that of the hole in the side surface of the spherical rotating block (208). The protective sleeve (212) is an annular buffer sleeve composed of foamed metal.

5. The elastic buffering wind power gear box connecting mechanism with overload protection according to claim 2, characterized in that: The spring (211) is sleeved on one side of the metal soft cable (209), and one end of the spring (211) is fixedly connected with the rotating disc (207), and the other end is fixedly connected with the limiting block (210).

6. The elastic buffering wind power gear box connecting mechanism with overload protection according to claim 2, characterized in that: The bundled steel cable (215) is composed of a plurality of high-strength cables, which can withstand a force of 5000 to 8000N.

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