CN111350635B

CN111350635B - Mechanical transmission mechanism and wind energy power system

Info

Publication number: CN111350635B
Application number: CN202010157394.7A
Authority: CN
Inventors: 钟晓晖; 孙香宇; 张明明; 徐建中
Original assignee: Institute of Engineering Thermophysics of CAS
Current assignee: Institute of Engineering Thermophysics of CAS
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2021-10-01
Anticipated expiration: 2040-03-09
Also published as: CN111350635A

Abstract

The embodiment of the disclosure provides a mechanical transmission mechanism and a wind power system, belonging to the technical field of mechanical engineering, wherein the mechanical transmission mechanism comprises a power transmission component; the power transmission assembly comprises a first rotating shaft, a first steering transmission piece, a second rotating shaft, a second steering transmission piece and a third rotating shaft; the first rotating shaft is transversely arranged, one end of the first rotating shaft is connected with a wind wheel of the wind turbine, and the other end of the first rotating shaft is connected with the first steering transmission member; the second rotating shaft is vertically arranged, and one end of the second rotating shaft is connected with the first steering transmission member; the other end of the second rotating shaft, which is far away from the first steering transmission member, is connected with the second steering transmission member; the third rotating shaft is transversely arranged, and one end of the third rotating shaft is connected with the second steering transmission member. Adopt this mechanical transmission mechanism of this disclosed embodiment, can convert the output of wind energy conversion machine to subaerial for work subassembly can be placed subaerial, has alleviateed the weight in cabin, makes things convenient for installation and the maintenance etc. in later stage.

Description

Mechanical transmission mechanism and wind energy power system

Technical Field

The disclosure relates to the technical field of mechanical engineering, in particular to a mechanical transmission mechanism and a wind power system.

Background

With the improvement of the urbanization rate, the removal of small regional boilers and the transformation of pipe networks in old urban areas, the centralized heating of cities and towns in China has a huge gap, the heating area of residences in cities and towns in China keeps high-speed growth in recent years, but the coverage rate of the centralized heating of China is still at a low level, a centralized heating system is only built in main cities and towns in northern provinces at present, the average coverage rate is less than 50%, the cities and towns in south and vast rural areas in China basically have no centralized heating facilities, the cities and towns in developed countries such as Finland and Denmark can be heated only by independent heating modes such as a natural gas furnace, an air conditioner, an electric furnace and honeycomb briquette, the coverage rate of the urban centralized heating of the cities and the cities in the countries such as Finland and the Denmark is up to 90%, and the national average level is also more than 60%.

The urban heat supply industry in China still uses coal as main fuel, the annual coal consumption is more than 1.5 hundred million tons, and the lagging capacity of high pollution and low efficiency in the industry is more than 50 percent. 2013, the heating mode of the coal-fired boiler is banned in China in the first year, and the situation of energy shortage comes along with the coming of the northern heating season. Because coal heating is eliminated, solar energy, wind energy and other clean energy sources gradually become new heating force in winter. China has rich wind energy resources and has a prospect of large-scale development and utilization. The wind energy heat supply can solve the pollution problem caused by coal heating on one hand, and can relieve the problem of wind power abandoning and electricity limiting on the other hand.

In a system for driving a heat pump by wind energy to supply heat or converting the wind energy into electric energy, the wind energy needs to be converted into mechanical energy, and then the mechanical energy is converted into heat energy or electric energy. The conversion of wind energy into mechanical energy in these systems has become a hot spot of current research, and the following problems exist in the structures currently studied for converting wind energy into mechanical energy:

1. the mechanical energy output efficiency of the wind turbine caused by the yaw problem of the system when the wind direction changes is low, so that the wind energy utilization rate is low;

2. working parts in the wind power system are mostly arranged in the engine room and are high in position, so that the wind power system is not beneficial to installation and maintenance.

Disclosure of Invention

In view of the above, the disclosed embodiments provide a mechanical transmission mechanism and a wind power system, which at least partially solve the problems in the prior art.

In a first aspect, the disclosed embodiments provide a mechanical transmission mechanism, where the mechanical transmission mechanism is applied to a wind power system including a wind turbine, where the wind power system includes a working component installed on a bearing ground, and the working component is connected to the mechanical transmission mechanism;

the mechanical transmission mechanism comprises a power transmission component connected with the wind turbine;

the power transmission assembly comprises a first rotating shaft, a first steering transmission piece, a second rotating shaft, a second steering transmission piece and a third rotating shaft;

the first rotating shaft is arranged in parallel to the bearing ground, one end of the first rotating shaft is in transmission connection with a wind wheel of the wind turbine, and the other end of the first rotating shaft is connected with the first steering transmission member;

the second rotating shaft is arranged perpendicular to the bearing ground, one end of the second rotating shaft is connected with the first steering transmission member, and the other end, far away from the first steering transmission member, of the second rotating shaft is connected with the second steering transmission member;

the third rotating shaft is arranged in parallel to the bearing ground through a fixing frame erected on the bearing ground, the third rotating shaft is perpendicular to the second rotating shaft, and one end of the third rotating shaft is connected with the second steering transmission member;

the power transmission assembly is used for outputting power transmitted by the wind turbine to the working assembly, the first rotating shaft horizontally rotates under the driving of the wind wheel, the first steering transmission piece is used for transmitting the power of the first rotating shaft rotating in the horizontal direction to the second rotating shaft, the second steering transmission piece is used for transmitting the power of the second rotating shaft rotating in the vertical direction to the third rotating shaft, and the third rotating shaft is used for transmitting the power of the horizontal rotation to the working assembly.

According to a particular implementation of the embodiments of the present disclosure, the first steering transmission member and/or the second steering transmission member is a turning gear.

According to a specific implementation manner of the embodiment of the disclosure, the gear surfaces of the driving wheel and the driven wheel of the direction-changing gear are right angles.

According to a specific implementation manner of the embodiment of the present disclosure, the mechanical transmission mechanism further includes a rotation limiting component, an input end of the rotation limiting component is connected to the third rotating shaft, an output end of the rotation limiting component is connected to the working component through a transmission shaft, and the rotation limiting component is configured to limit a direction of power output by the third rotating shaft.

According to a specific implementation manner of the embodiment of the disclosure, the steering limiting component comprises a driving disc, a clamping strip and a driven disc, the driving disc is connected with the output end of the third rotating shaft, and the driven disc is connected with the working component through the transmission shaft;

the clamping strip is arranged on the driving disc;

the gear teeth of the driven disc are arranged towards the clamping strips, so that the clamping strips are abutted between the gear teeth of the driven disc, and the driven disc is pushed to rotate when the driving disc rotates.

According to a specific implementation manner of the embodiment of the present disclosure, the mechanical transmission mechanism further includes a buffer assembly, and the buffer assembly is connected between the third rotating shaft and the working assembly;

the buffer assembly comprises two connecting discs and a torsion spring, the torsion spring is arranged between the two connecting discs, the spiral direction of the torsion spring is opposite to the rotating direction of the third rotating shaft, and the torsion spring is used for providing a buffer effect when the third rotating shaft starts to rotate.

According to a specific implementation manner of the embodiment of the disclosure, the mechanical transmission mechanism further comprises a speed-up gear box, and the speed-up gear box is connected between the third rotating shaft and the working assembly.

According to a specific implementation of the embodiment of the present disclosure, the wind turbine is a downwind wind turbine.

In a second aspect, embodiments of the present disclosure provide a wind energy power system, including a wind turbine including a wind wheel, and a mechanical transmission mechanism as described in any one of the above;

the wind wheel is connected with a first rotating shaft of the mechanical transmission mechanism and is used for driving the first rotating shaft to horizontally rotate under the driving of wind power.

According to a specific implementation manner of the embodiment of the disclosure, the working assembly comprises a compressor, an evaporator, a condenser, a phase change heat accumulator and an expansion valve, and the compressor, the condenser, the phase change heat accumulator, the expansion valve and the evaporator are connected through pipelines to realize thermal circulation;

the compressor is used for compressing gas into high-temperature high-pressure gas to be conveyed to the condenser through a pipeline, the condenser is used for enabling the gas to be condensed and release heat to heat circulating water outside a coil pipe of the condenser, the condensed gas flows back to the evaporator through an expansion valve and is sucked into the compressor after being evaporated, and the phase change heat accumulator is used for storing heat of the circulating water to convey the high-temperature circulating water to a heat user.

The mechanical transmission mechanism in the embodiment of the disclosure is used in a wind energy power system comprising a wind turbine, and comprises a power transmission component connected with the wind turbine, wherein the power transmission component is used for outputting power transmitted by the wind turbine to a working component;

the first rotating shaft is transversely arranged, one end of the first rotating shaft is connected with a wind wheel of the wind turbine, and the other end of the first rotating shaft is connected with the first steering transmission piece;

the second rotating shaft is vertically arranged, and one end of the second rotating shaft is connected with the first steering transmission member; the other end of the second rotating shaft, which is far away from the first steering transmission part, is connected with the second steering transmission part;

the third rotating shaft is transversely arranged, and one end of the third rotating shaft is connected with the second steering transmission member;

first steering driving spare is used for with the rotatory power transmission of first pivot in the horizontal direction extremely the second pivot is in order to drive the second pivot is rotatory in the vertical direction, the second steering driving spare is used for with the rotatory power transmission of second pivot in the vertical direction extremely the third pivot is in order to drive the third pivot is rotatory in the horizontal direction, the third pivot is used for transmitting rotatory power to the work subassembly.

The mechanical transmission mechanism that this disclosed embodiment provided is through the cooperation of first pivot and first transmission piece that turns to, with the power transmission of wind wheel to vertical rotatory second pivot in, the rethread second pivot with the second turn to the cooperation of transmission piece with vertical rotatory power transmission to third pivot, make third pivot horizontal rotation, and then drive the work subassembly operation of being connected with the third pivot through the third pivot. Through the mechanical transmission mechanism of the embodiment of the disclosure, the power of the wind turbine is transmitted to the working assembly arranged on the bearing ground, so that the working assembly can continuously work on the ground, the weight of the cabin is reduced, and the installation, the maintenance and the like in the later period are facilitated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a wind energy power system according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a mechanical transmission mechanism provided in an embodiment of the present disclosure;

FIG. 3 is a disassembled schematic view of a steering limiting assembly in a mechanical transmission provided by an embodiment of the present disclosure;

FIG. 4A is an assembly view of a steering limit assembly in a mechanical transmission provided by an embodiment of the present disclosure;

FIG. 4B is an assembly view of another perspective of a steering limit assembly in a mechanical transmission provided by an embodiment of the present disclosure;

FIG. 5 is a schematic illustration of a disassembled buffer assembly in a mechanical transmission mechanism provided by an embodiment of the present disclosure;

FIG. 6 is an assembly view of a damper assembly in a mechanical transmission provided in accordance with an embodiment of the present disclosure;

FIG. 7 is a schematic illustration of a steering limit assembly and a cushion assembly mounting in a mechanical transmission provided in an embodiment of the present disclosure;

FIG. 8 is a schematic view of an automatic yaw of a wind turbine in a wind power system according to an embodiment of the present disclosure.

Summary of reference numerals:

a mechanical transmission mechanism-100, a first steering transmission member-101, a second steering transmission member-102, a first rotating shaft-103, a second rotating shaft-104 and a third rotating shaft-105;

a steering limiting component-106, a driven plate-1061, a clamping bar-1062, a driving plate-1063 and gear teeth-1064;

a buffer component-107, a connecting disc-1071 and a torsion spring-1072;

a speed increasing gear box-108;

a drive shaft-109;

the wind power system comprises a wind power system-200, a wind wheel-201, a nose cone seat-202, a tower-203 and a working assembly-204.

Detailed Description

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the drawings only show the components related to the present disclosure rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

The disclosed embodiment provides a mechanical transmission mechanism 100.

Referring to fig. 1 and fig. 2, a mechanical transmission mechanism 100 according to an embodiment of the present disclosure is provided, where the mechanical transmission mechanism 100 is applied to a wind power system 200 including a wind turbine, the wind power system 200 includes a working component 204 installed on a bearing ground, and the working component 204 is connected to the mechanical transmission mechanism 100;

the mechanical transmission mechanism 100 comprises a power transmission component connected with the wind turbine;

the power transmission assembly comprises a first rotating shaft 103, a first steering transmission member 101, a second rotating shaft 102, a second steering transmission member 102 and a third rotating shaft 105;

the first rotating shaft 103 is arranged parallel to the bearing ground, one end of the first rotating shaft 103 is in transmission connection with a wind wheel of the wind turbine, and the other end of the first rotating shaft 103 is connected with the first steering transmission piece 101;

the second rotating shaft 102 is arranged perpendicular to the bearing ground, one end of the second rotating shaft 102 is connected with the first steering transmission member 101, and the other end, far away from the first steering transmission member 101, of the second rotating shaft 102 is connected with the second steering transmission member 102;

the third rotating shaft 105 is arranged in parallel to the bearing ground through a fixed frame erected on the bearing ground, the third rotating shaft 105 is perpendicular to the second rotating shaft 102, and one end of the third rotating shaft 105 is connected with the second steering transmission member 102;

the power transmission assembly is used for outputting power transmitted by the wind turbine to the working assembly 204, the first rotating shaft 103 is driven by the wind wheel to rotate horizontally, the first steering transmission member 101 is used for transmitting power of the first rotating shaft 103 rotating in the horizontal direction to the second rotating shaft 102, the second steering transmission member 102 is used for transmitting power of the second rotating shaft 102 rotating in the vertical direction to the third rotating shaft 105, and the third rotating shaft 105 is used for transmitting power of the horizontal rotation to the working assembly 204.

The mechanical transmission structure of the embodiment of the present disclosure is mainly applied to a wind energy power system 200 including a wind turbine, and the wind energy power system 200 may be a wind energy power generation system or a wind energy heating system. The mechanical transmission mechanism 100 includes a power transmission component connected to the wind turbine, and the power transmission component is used for outputting the power transmitted by the wind turbine to a working component 204, wherein the working component 204 is installed on a bearing ground. When the wind power system 200 is a wind power generation system, the working component 204 is a generator and other related components, and when the wind power system 200 is a wind energy heating system, the working component 204 is a compressor and other related components. The power transmission assembly of the disclosed embodiment is connected to a wind turbine for outputting power of the wind turbine to the working assembly 204.

Specifically, the power transmission assembly of the disclosed embodiment includes a first rotating shaft 103, a first steering transmission 101, a second rotating shaft 102, a second steering transmission 102, and a third rotating shaft 105; the first rotating shaft 103 is transversely arranged, specifically arranged parallel to the bearing ground, and one end of the first rotating shaft 103 is connected with the wind wheel 201 of the wind turbine, so that when the wind wheel 201 rotates, the first rotating shaft 103 connected with the wind wheel is driven to rotate. The other end, i.e. the output end, of the first rotating shaft 103 is connected to a first steering transmission member 101, and the first steering transmission member 101 is used for transmitting the power of the rotation of the first rotating shaft 103 in the horizontal direction to the second rotating shaft 102 so as to drive the second rotating shaft 102 to rotate in the vertical direction; the second rotating shaft 102 is vertically disposed, specifically perpendicular to the first rotating shaft 103 and perpendicular to the bearing ground. The second shaft 102 is disposed within the tower 2035 of the wind turbine, and the second shaft 102 rotates in the vertical direction by being transmitted by the second turning transmission member 102 when the first shaft 103 rotates. The third shaft 105 is also arranged transversely and parallel to the first shaft 103 and at a certain height from the load-bearing ground, and by means of a fixed frame mounted on the load-bearing ground, the third shaft 105 is arranged parallel to the load-bearing ground and rotates in the horizontal direction with the second shaft 102 when the second shaft 102 rotates. The output end of the third rotating shaft 105 is connected to the working component 204, and when the third rotating shaft 105 rotates, the working component 204 is driven to operate, thereby completing the whole work flow. It should be noted that the third rotating shaft 105 is installed at a height that enables the working assembly 204 to be installed on the ground. The third shaft 105 may be directly connected to the working element 204, or other elements may be disposed between the third shaft 105 and the working element 204.

By adopting the mechanical transmission structure disclosed by the embodiment of the disclosure, the output of the wind turbine can be converted to the ground, so that the working assembly 204 can be placed on the ground, the weight of the cabin is reduced, and the installation, the maintenance and the like in the later period are facilitated.

In another preferred embodiment, first steering transmission member 101 and second steering transmission member 102 are direction changing gears, which mainly serve to transmit power and change the direction of rotation of the shaft. And the gear face of the driving wheel and the driven wheel of the change gear is a right angle, and when the two gears are meshed, the rotation of the horizontal shaft can be transmitted to the vertical shaft. The mechanical transmission mechanism 100 of the embodiment of the present disclosure uses two sets of direction-changing gears, and first transmits the horizontal first rotating shaft 103 driven by the wind turbine to the vertical second rotating shaft 102 by using the direction-changing gears, and then transmits the power of the vertical second rotating shaft 102 to the ground horizontal third rotating shaft 105 by using one set of gears. Two groups of change gears are used for force conversion and transmission, so that the structure of the mechanical transmission mechanism 100 is simplified, and the applicability of the mechanism in the wind energy power system 200 is improved.

Further, the wind turbine of the embodiment of the present disclosure is a downwind wind turbine.

Relative to the incoming wind direction, the wind wheel 201 of the downwind wind turbine is behind the tower, and the tower shadow effect is generated, but the miniaturization of the wind wheel is negligible. When the direction of the incoming wind is not changed, the wind wheel drives the second rotating shaft 102 to rotate, so that transverse torque is generated on the headstock 202, when a downwind wind turbine is adopted, the torque can be provided by wind energy, the downwind wind turbine can automatically yaw, an additional control mechanism is not needed, and the cost is saved.

When a small wind turbine is used, an upper wind turbine can be adopted, and the tail rudder is added at the tail of the wind turbine to finish automatic yawing. When the wind turbine is large-sized, an upwind wind turbine is often adopted, so a yaw system is required to be equipped to perfect the operation of the whole system.

In another embodiment, referring to fig. 3, 4A and 4B, the mechanical transmission mechanism 100 further includes a steering limiting assembly 106 connected to the power transmission assembly, an input end of the steering limiting assembly 106 is connected to the third rotating shaft 105 for limiting a direction of power output by the third rotating shaft 105, and an output end of the steering limiting assembly 106 is connected to the working assembly 204 through a transmission shaft.

Since the wind direction is changed at any time, the force transmitted by the wind wheel of the wind turbine to the first rotating shaft 103 is also changed at any time, and finally the force transmitted by the working assembly 204 is also changed at any time, so that the power for providing the working assembly 204 is not facilitated, and the damage to the elements is possible. Therefore, in this embodiment, a rotation limiting component 106 is disposed between the third rotating shaft 105 and the working component 204, and the rotation limiting component 106 is mainly used for limiting the direction of the power transmitted by the third rotating shaft 105.

In the embodiment of the present disclosure, the steering limiting assembly 106 includes a driving disc, a clamping bar and a driven disc 1061, the driving disc is connected to an output end of the third rotating shaft 105, and the driven disc 1061 is connected to the working assembly 204 through the transmission shaft;

the clamping strip is arranged on the driving disc;

the gear teeth of the driven disc 1061 are opened toward the clamping bars, so that the clamping bars abut against the gear teeth of the driven disc 1061, and the driven disc 1061 is pushed to rotate when the driving disc rotates.

The strip is related to the arrangement of the orientation of the gear teeth of the driven disk 1061, specifically, when the driving disk 1063 rotates clockwise, the position of the strip 1062 on the driving disk 1063 and the orientation of the gear teeth 1064 of the driven disk 1061 enable the driven disk 1061 to also rotate clockwise with the driving disk 1063, and when the requirement that the strip can rotate clockwise with the driving disk 1063 is met, the driven disk 1061 idles when the driving disk 1063 rotates counterclockwise; alternatively, when the driving disk 1063 rotates counterclockwise, the position of the locking strip 1062 on the driving disk 1063 and the orientation of the gear teeth 1064 of the driven disk 1061 may be such that the driven disk 1061 also rotates counterclockwise with the driving disk 1063, and when the position is satisfied, the driven disk 1061 rotates clockwise with the driving disk 1063, and when the position is satisfied, the driven disk 1061 rotates counterclockwise with the driving disk 1063, the driven disk 1061 idles.

Specifically, the driving plate 1063 is connected to the third shaft 105, and the locking strip 1062 is an iron strip with a built-in spring. When the installation is completed, the clamping strip 1062 is tightly pressed at the gear of the driven disc 1061 by the force exerted by the spring, when the driving disc 1063 rotates counterclockwise, the driving disc 1063 is in front from the front view of the driving disc 1063, the driven disc 1061 is behind, and the clamping strip 1062 abuts against the inverted tooth of the driven disc 1061 to drive the driven disc 1061 to rotate; when the driving disk 1063 rotates clockwise, the rack 1062 slides over the spur teeth of the driven disk 1061, and the driven disk 1061 does not rotate.

With the steering limiting assembly 106 of the disclosed embodiment, the design can enable the steering limiting assembly 106 to continuously output power when the wind direction is unchanged. However, when the wind direction changes, the headstock 2023 may face the wind along with the change of the wind direction, and may be clockwise or counterclockwise, and since the mechanism does not limit other rotating components, the rotation of the headstock may drive the third rotating shaft 105 to rotate clockwise or counterclockwise. If the third rotating shaft 105 rotates clockwise first, when the wind direction changes, the rotation of the headstock makes the third rotating shaft 105 rotate counterclockwise instantly, which may cause mechanical impact to the subsequent speed-up gearbox 108, etc., which may damage parts and is not favorable for the mechanism operation. The steering limiting assembly 106 can be used for fixing the steering of the transmission shaft, can idle and has a certain protection effect on the previous transmission mechanism.

In another embodiment, referring to fig. 5 and 6, the mechanical transmission mechanism 100 further includes a buffer assembly 107 connected between the third rotating shaft 105 and the working assembly 204, the buffer assembly 107 includes two connecting discs 1071 and a torsion spring 1072 disposed between the two connecting discs 1071, and a spiral direction of the torsion spring 1072 is opposite to a rotation direction of the third rotating shaft 105 for providing a buffer action when the third rotating shaft 105 is quenched.

The cushioning component 107 is connected behind the turn-defining component 106. Referring to fig. 7, the third rotating shaft 105, the steering limiting assembly 106 and the buffering assembly 107 are mounted on the bearing ground through a fixed frame, which is a bearing frame. The third rotating shaft 105 is also provided with a bearing, so that the friction of the third rotating shaft 105 in the rotating process is reduced. The rotation limiting assembly 106 is connected to the output end of the third rotating shaft 105, the rotation limiting assembly 106 is connected with the buffer assembly 107 through a transmission shaft 109, and the buffer assembly 107 is connected with the working assembly 204 through the transmission shaft 109.

Further, the mechanical transmission mechanism 100 further includes a speed-increasing gear box 108 connected between the third rotating shaft 105 and the working assembly 204. The speed-up gear box 108 mainly plays a role in power transmission and speed increase, so that the rotating speed of the blades is increased through the speed-up gear box 108, and the rotating speed of the blades reaches the rated rotating speed of the system, so that the normal operation of the system is ensured.

The specific process and principles of operation of the steering limiting assembly 106 and the cushioning assembly 107 are as follows:

when the wind direction is stable, the wind wheel 201 rotates to drive the second rotating shaft 102 to rotate through the change gear, then the change gear drives the third rotating shaft 105 to rotate, and the working assembly 204 is driven to operate through the steering limiting assembly 106, the buffer assembly 107 and the speed-up gearbox 108.

Referring to fig. 8, assuming that the wind turbine rotates clockwise when facing the wind, and after two gear changes, the third rotating shaft 105 will rotate counterclockwise, so the steering limiting component 106 needs to be designed as follows: the driven disk 1061 can be rotated only by the counterclockwise rotation of the driving disk 1063, otherwise it idles. The direction of the spring coils in the damping assembly 107, as viewed from the direction changing gear, should be clockwise, so that the springs provide the appropriate torque to achieve damping when the front shaft is rotated counterclockwise. When the wind direction suddenly changes in the direction a, the headstock 3 rotates counterclockwise to automatically yaw without affecting the turning of the third rotating shaft 105, which still rotates counterclockwise. When the wind direction suddenly changes in the direction B, the headstock 3 rotates clockwise to automatically yaw, at this time, the third rotating shaft 105 also rotates clockwise, the steering limiting component 106 idles, and when the wind direction does not change, the third rotating shaft 105 rotates counterclockwise after passing through the steering limiting component 106 and the buffer component 107, and drives the working component 204 to operate.

The steering limiting assembly 106 can be designed according to the selection of the steering of the wind turbine and the required steering of the third rotating shaft 105, and the orientation of the driven plate 1061 gear in the steering limiting assembly 106 determines whether to idle or not. The spiral direction of the buffer spring of the following buffer assembly 107 should be selected to be changed correspondingly.

For example: the wind turbine rotates clockwise, and due to the action of the change gear, the third rotating shaft 105 rotates counterclockwise, and the driven disk 1061 in the turning limiting assembly 106 is oriented clockwise, as shown in fig. 4A, and the clamping strip 1062 is on the left side. When the third rotating shaft 105 rotates counterclockwise, the driven plate 1061 can be driven to rotate by the clamping strip 1062, and when the third rotating shaft 105 rotates clockwise, the steering limiting component 106 idles. The wind turbine rotates anticlockwise, and only by selecting the direction of the driven disc 1061 gear in the steering limiting assembly 106 to be anticlockwise, the clamping strip 1062 can realize the one-way transmission function on the right side.

Compared with the prior art, the mechanical transmission structure has a good working effect on the small wind turbine, is simple in structure, can automatically yaw, and is wide in application, and the working core is placed on the ground, so that the installation and maintenance are convenient and fast. The small mechanical mechanism has low requirement on wind speed, is very suitable for self-sufficiency of families, has higher practical value when used for converting wind energy into heat energy in winter in south, can be used for not only heating, but also small wind power generation, wind energy water lifting and other places utilizing wind energy.

Corresponding to the above method embodiment, referring to fig. 1, the embodiment of the present disclosure further provides a wind energy power system 200, where the wind energy power system 200 includes a wind turbine and the mechanical transmission mechanism 100 as described above, where the wind turbine includes a wind wheel 201;

the wind wheel 201 is connected with the first rotating shaft 103 of the mechanical transmission mechanism 100, and the wind wheel 201 is used for driving the first rotating shaft 103 to rotate horizontally under the driving of a wind turbine.

Specifically, when the wind wheel of the wind turbine is driven by wind power to rotate, the first rotating shaft 103 in the horizontal direction rotates horizontally, the second rotating shaft 102 in the vertical direction rotates vertically under the drive of the first steering transmission shaft, and the third rotating shaft 105 in the horizontal direction rotates horizontally under the drive of the second steering transmission shaft. When the rotation direction of the third rotating shaft 105 is sufficient to drive the rotation limiting component 106 to rotate, the rotation limiting component 106 drives the following working component 204 to work. When the third rotating shaft 105 is not rotated in a direction sufficient to rotate the rotation limiting assembly 106, the rotation limiting assembly 106 will idle, and the working assembly 204 will not be activated.

Specifically, the working assembly 204 of the present embodiment includes a compressor, an evaporator, a condenser, a phase change heat accumulator, and an expansion valve, and the compressor, the condenser, the phase change heat accumulator, the expansion valve, and the evaporator are connected by a pipeline to implement thermal cycle;

The system shown in fig. 1 may correspondingly execute the content in the above method embodiment, and details of the part not described in detail in this embodiment refer to the content described in the above method embodiment, which is not described herein again.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. The mechanical transmission mechanism is applied to a wind energy power system comprising a wind turbine, the wind energy power system comprises a working component arranged on bearing ground, and the working component is connected with the mechanical transmission mechanism;

the power transmission assembly is used for outputting power transmitted by the wind turbine to the working assembly, the first rotating shaft horizontally rotates under the driving of the wind wheel, the first steering transmission piece is used for transmitting the power of the first rotating shaft rotating in the horizontal direction to the second rotating shaft, the second steering transmission piece is used for transmitting the power of the second rotating shaft rotating in the vertical direction to the third rotating shaft, and the third rotating shaft is used for transmitting the power of the horizontal rotation to the working assembly;

the mechanical transmission mechanism further comprises a steering limiting assembly, the input end of the steering limiting assembly is connected with the third rotating shaft, the output end of the steering limiting assembly is connected with the working assembly through a transmission shaft, and the steering limiting assembly is used for limiting the direction of power output by the third rotating shaft; the steering limiting assembly comprises a driving disc, a clamping strip and a driven disc, the driving disc is connected with the output end of the third rotating shaft, and the driven disc is connected with the working assembly through the transmission shaft;

the clamping strip is arranged on the driving disc;

2. Mechanical transmission according to claim 1, characterized in that the first steering transmission element and/or the second steering transmission element is a change gear.

3. The mechanical transmission mechanism as claimed in claim 2, wherein the gear faces of the driving wheel and the driven wheel of the direction-changing gear are right-angled.

4. The mechanical transmission mechanism of any one of claims 1 to 3, further comprising a damping assembly connected between the third shaft and the working assembly;

5. The mechanical transmission mechanism of any one of claims 1 to 3, further comprising a speed-increasing gearbox connected between the third shaft and the working assembly.

6. The mechanical transmission mechanism as claimed in any one of claims 1 to 3, wherein the wind turbine is a downwind wind turbine.

7. A wind powered system comprising a wind turbine and a mechanical transmission as claimed in any one of claims 1 to 6, the wind turbine comprising a wind wheel;

8. The wind power system according to claim 7, wherein the working assembly comprises a compressor, an evaporator, a condenser, a phase change heat accumulator and an expansion valve, and the compressor, the condenser, the phase change heat accumulator, the expansion valve and the evaporator are connected through pipelines to realize thermal circulation;