阅读说明：本技术 一种惯性动力循环转换发动机 (Inertial power cycle conversion engine ) 是由 张斗三 于 2020-07-25 设计创作，主要内容包括：一种惯性动力循环转换发动机包括电动机、第一转动轴、第一曲轴、第二曲轴、转盘、甩动组件及发电机；电动机通过第一转动轴与第一曲轴及第二曲轴传动连接,且第一曲轴与第二曲轴处于同一轴心线设置,电动机用于驱动第一曲轴及第二曲轴做旋转运动,第一曲轴的旋转方向与第二曲轴的旋转方向相反；转盘的数量为两个,一转盘设置于第一曲轴远离第二曲轴的一端,另一转盘设置于第二曲轴远离第一曲轴的一端,甩动组件的数量为多个,每一个甩动组件铰接于第一曲轴或第二曲轴上的一个连杆轴颈处,多个甩动组件还间隔均匀地铰接于转盘的四周；发电机与第一转动轴传动连接,发电机与电动机电连接。(An inertial power cycle conversion engine comprises a motor, a first rotating shaft, a first crankshaft, a second crankshaft, a rotary table, a swinging assembly and a generator; the motor is in transmission connection with the first crankshaft and the second crankshaft through a first rotating shaft, the first crankshaft and the second crankshaft are arranged on the same axial lead, the motor is used for driving the first crankshaft and the second crankshaft to rotate, and the rotating direction of the first crankshaft is opposite to that of the second crankshaft; the number of the rotating discs is two, one rotating disc is arranged at one end, far away from the second crankshaft, of the first crankshaft, the other rotating disc is arranged at one end, far away from the first crankshaft, of the second crankshaft, the number of the swinging assemblies is multiple, each swinging assembly is hinged to a connecting rod journal on the first crankshaft or the second crankshaft, and the swinging assemblies are further hinged to the periphery of the rotating discs at intervals and uniformly; the generator is in transmission connection with the first rotating shaft and is electrically connected with the motor.)

1. An inertial power cycle conversion engine, comprising: the device comprises a motor, a first rotating shaft, a first crankshaft, a second crankshaft, a rotating disc, a swinging assembly and a generator;

the motor is in transmission connection with the first crankshaft and the second crankshaft through the first rotating shaft, the first crankshaft and the second crankshaft are arranged on the same axial lead, the motor is used for driving the first crankshaft and the second crankshaft to rotate, and the rotating direction of the first crankshaft is opposite to that of the second crankshaft;

the number of the rotating discs is at least two, one rotating disc is arranged at one end, away from the second crankshaft, of the first crankshaft, the other rotating disc is arranged at one end, away from the first crankshaft, of the second crankshaft, a disc hole is formed in the geometric center of each rotating disc, the first crankshaft and the second crankshaft are arranged by penetrating through the through holes of the two rotating discs respectively, the first crankshaft and the second crankshaft are connected with the two rotating discs respectively, the number of the swing assemblies is at least one, each swing assembly is hinged to a connecting rod journal on the first crankshaft or the second crankshaft, and the swing assemblies are further hinged to the periphery of the rotating discs uniformly at intervals;

the generator is in transmission connection with the first rotating shaft and is electrically connected with the motor.

2. The inertial power cycle conversion engine of claim 1 wherein the throw assembly comprises a connector secured around the turntable and a throw block hinged to the connector.

3. The inertial power cycle conversion engine of claim 2, wherein a connecting rod is disposed at the connecting rod journal, the connecting rod being secured to an end of the connecting rod remote from the connecting rod journal.

4. An inertial power cycle conversion engine according to any one of claims 2 to 3, wherein each of the whipping elements is connected in series with one or more other of the whipping elements.

5. The inertial power cycle conversion engine of claim 2 wherein the throws are metal balls or metal throws.

6. The inertial power cycle conversion engine of claim 1, wherein the number of first and second crankshafts is one or more, the number of first crankshafts being equal to the number of second crankshafts, the first and second crankshafts being identical in construction.

7. The inertial power cycle conversion engine of claim 1, wherein a pulley is connected to the first rotating shaft, and the electric motor and the generator are each drivingly connected to the pulley by a belt.

8. The inertial power cycle conversion engine of claim 1 further comprising a second rotating shaft drivingly connected to either the first crankshaft or the second crankshaft, the generator drivingly connected to the second rotating shaft.

9. The inertial power cycle conversion engine of claim 1 further comprising a mobile power source, the electric motor being either a dc motor or an ac motor, the mobile power source being electrically connected to the dc motor or the ac motor.

Technical Field

The invention relates to the technical field of power conversion, in particular to an inertial power cycle conversion engine.

Background

The conventional motor needs to input electric energy continuously from the outside to maintain a working state. The traditional motor has a plurality of short plates, and after the electric energy is converted into other forms of energy by the motor, the other forms of energy are difficult to recycle, so that the electric energy consumption is large; secondly, under the condition that the motor is suddenly powered off, the motor can immediately stop rotating, and production and operation are affected.

Disclosure of Invention

Based on this, it is necessary to provide an inertia power cycle conversion engine to solve the above technical problems.

An inertial power cycle conversion engine comprising: the device comprises a motor, a first rotating shaft, a first crankshaft, a second crankshaft, a rotating disc, a swinging assembly and a generator;

the motor is in transmission connection with the first crankshaft and the second crankshaft through the first rotating shaft, the first crankshaft and the second crankshaft are arranged on the same axial lead, the motor is used for driving the first crankshaft and the second crankshaft to rotate, and the rotating direction of the first crankshaft is opposite to that of the second crankshaft;

the number of the rotating discs is two, one rotating disc is arranged at one end, away from the second crankshaft, of the first crankshaft, the other rotating disc is arranged at one end, away from the first crankshaft, of the second crankshaft, a disc hole is formed in the geometric center of each rotating disc, the first crankshaft and the second crankshaft are arranged by penetrating through the through holes of the two rotating discs respectively, the first crankshaft and the second crankshaft are connected with the two rotating discs respectively, the number of the swing assemblies is multiple, each swing assembly is hinged to one connecting rod journal on the first crankshaft or the second crankshaft, and the swing assemblies are further hinged to the periphery of the rotating discs at intervals uniformly;

the generator is in transmission connection with the first rotating shaft and is electrically connected with the motor.

In one embodiment, the swing assembly comprises a connecting piece and a swing block, the connecting piece is fixed on the periphery of the turntable, and the swing block is hinged with the connecting piece.

In one embodiment, a connecting rod is arranged at the connecting rod journal, and the connecting rod is fixed at one end of the connecting rod away from the connecting rod journal.

In one embodiment, each of the whip assemblies is connected to one or more other whip assemblies in sequence.

In one embodiment, the flail is a metal ball or metal flail.

In one embodiment, the number of the first crankshafts and the number of the second crankshafts are one or more, the number of the first crankshafts is equal to the number of the second crankshafts, and the first crankshafts and the second crankshafts are identical in structure.

In one embodiment, a pulley is connected to the first rotating shaft, and the motor and the generator are respectively in transmission connection with the pulley through a belt.

In one embodiment, the device further comprises a second rotating shaft, the second rotating shaft is in transmission connection with the first crankshaft or the second crankshaft, and the generator is in transmission connection with the second rotating shaft.

In one embodiment, the mobile power supply is further included, the motor is a direct current motor or an alternating current motor, and the mobile power supply is electrically connected with the direct current motor or the alternating current motor.

The beneficial effect of this application is: the motor drives the first rotating shaft to rotate the first crankshaft and the second crankshaft, the first crankshaft and the second crankshaft are arranged on the same axial lead, the rotating directions of the first crankshaft and the second crankshaft are opposite, so that torque generated when the first crankshaft and the second crankshaft rotate can be mutually offset, and further the first crankshaft and the second crankshaft can keep balance when rotating; the first crankshaft, the first crankshaft and the rotary table are hinged with a plurality of throwing assemblies, the throwing assemblies can be driven to rotate together when the first crankshaft, the first crankshaft and the rotary table rotate, the throwing assemblies can continue to rotate under the action of inertia when the input electric quantity of the motor is reduced or stopped, the first crankshaft and the second crankshaft are further driven to rotate, the first rotating shaft is further driven to rotate, the first rotating shaft drives the generator to generate electricity, the generator transmits the generated electric quantity to the motor, the motor continues to do work, and the first crankshaft and the second crankshaft are further continuously driven to rotate; therefore, when the motor drives the swinging component to rotate to do work, the swinging component drives the generator to generate electricity under the action of inertia, and then the electric energy is provided for the motor, so that the consumption of the electric energy is greatly saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic illustration of an embodiment of an inertial power cycle conversion engine;

FIG. 2 is a schematic illustration of another embodiment of an inertial power cycle conversion engine;

FIG. 3 is a schematic illustration of a further embodiment of an inertial power cycle conversion engine.

Reference numerals:

10. a power cycle conversion engine assembly; 100. an electric motor; 200. a first rotating shaft; 300. a first crankshaft; 400. a second crankshaft; 500. a turntable; 600. a whipping assembly; 700. a generator; 610. a connecting member; 620. throwing blocks; 630. a connecting rod; 210. a pulley.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an inertial power cycle conversion engine 10 according to an embodiment of the present invention includes: motor 100, first rotating shaft 200, first crankshaft 300, second crankshaft 400, turntable 500, swing assembly 600, and generator 700.

The motor 100 is in transmission connection with the first crankshaft 300 and the second crankshaft 400 through the first rotating shaft 200, the first crankshaft 300 and the second crankshaft 400 are arranged on the same axial lead, the motor 100 is used for driving the first crankshaft 300 and the second crankshaft 400 to rotate, and the rotating direction of the first crankshaft 300 is opposite to that of the second crankshaft 400.

Specifically, the motor 100 and the first rotating shaft 200 may be driven by a belt or a gear, the motor 100 drives the first rotating shaft 200 to rotate and further drives the first crankshaft 300 and the second crankshaft 400 to rotate, in order to make the rotation direction of the first crankshaft 300 opposite to the rotation direction of the second crankshaft 400, in one embodiment, a first conical gear may be disposed at one end of the first rotating shaft 200 for driving the first crankshaft 300 and the second crankshaft 400, the first crankshaft 300 and the second crankshaft 400 may be disposed at two opposite sides of the first rotating shaft 200, a second conical gear may be disposed at one end of the first crankshaft 300 close to the second crankshaft 400, a third conical gear may be disposed at one end of the second crankshaft 400 close to the first crankshaft 300, and the first conical gear may be engaged with the second conical gear and the third conical gear, thus, when the first bevel gear drives the second bevel gear and the third bevel gear to rotate, the second bevel gear and the third bevel gear have opposite rotation directions, and the first crankshaft 300 and the second crankshaft 400 also have opposite rotation directions. Of course, there are many ways to use one rotating shaft to drive the other two rotating shafts to rotate in opposite directions, and this application is not limited thereto.

It is worth mentioning that a single or multiple first crankshafts and multiple second crankshafts can be selected and mounted according to the required power, the multiple first crankshafts and the multiple second crankshafts are vertically stacked and mounted, two or multiple movable throwing blocks can be mounted on each first crankshaft or each second crankshaft to serve as the throwing assembly, and metal steel balls can also be mounted to serve as the movable throwing blocks. Furthermore, according to the required power, a plurality of movable throwing blocks can be connected to each movable throwing block.

In order to reduce the vibration when the first crankshaft 300 and the second crankshaft 400 drive the swing assembly 600 to rotate, in an embodiment, a gear box may be further included, in this embodiment, a gear box may be installed between the first crankshaft 300 and the second crankshaft 400, when a plurality of first crankshafts and a plurality of second crankshafts are installed, a gear box may be installed at each of upper and lower ends of each of the first crankshafts or the second crankshafts, a plurality of first rotating shafts are connected between each of the first crankshafts and the second crankshafts, the plurality of first rotating shafts are connected by a belt, and the first rotating shaft 200 is connected with the first crankshafts 300 and the second crankshafts 400 in the gear box in a transmission manner.

It should be noted that, in the use state, the first crankshaft 300 and the second crankshaft 400 are in the vertical state, and since the rotation directions of the first crankshaft 300 and the second crankshaft 400 are opposite, the torques generated by the first crankshaft 300 and the second crankshaft 400 during the rotation can be mutually offset, that is, since the rotation directions of the first crankshaft 300 and the second crankshaft 400 are opposite, the inertia forces of the first crankshaft 300 and the second crankshaft 400 are mutually offset, and further the first crankshaft 300 and the second crankshaft 400 can keep a balanced state during the rotation, so that the inertia power cycle conversion engine is in a balanced operation state as a whole, and meanwhile, the effects of shock absorption and silence can be achieved.

The number of the rotating discs 500 is two, one rotating disc 500 is arranged at one end of the first crankshaft 300 far away from the second crankshaft 400, the other rotating disc 500 is arranged at one end of the second crankshaft 400 far away from the first crankshaft 300, the disc center of the rotating disc 500 is penetrated by the axis line of the first crankshaft 300, the number of the swing assemblies 600 is multiple, each swing assembly 600 is hinged to one connecting rod journal on the first crankshaft 300 or the second crankshaft 400, and the swing assemblies 600 are further hinged to the periphery of the rotating disc 500 at intervals and uniformly.

Specifically, the geometric center of the turntable 500 is a center of the turntable 500, a center of the turntable 500 is provided with a disc hole, the first crankshaft 300 passes through the disc hole, and the first crankshaft 300 is connected to the turntable 500. Since the whipping assembly 600 is connected to the first crankshaft 300 or the second crankshaft 400 in a hinged manner, when the first crankshaft 300 and the second crankshaft 400 rotate, the first crankshaft 300 and the second crankshaft 400 rotate to drive the whipping assembly 600 to rotate together, the whipping assembly 600 has a certain degree of freedom in rotation, and when the rotation speed of the first crankshaft 300 and the second crankshaft 400 decreases or stops rotating, the whipping assembly 600 can continue to rotate under the action of inertia, thereby driving the first crankshaft 300 and the second crankshaft 400 to rotate.

In order to balance the first crankshaft 300 and the second crankshaft 400, one end of the first crankshaft 300, which is far away from the second crankshaft 400, is provided with one of the turntables 500, and one end of the second crankshaft 400, which is far away from the first crankshaft 300, is provided with the other turntable 500, and a plurality of the whipping assemblies 600 are evenly hinged around the turntables 500 at intervals, so that the inertia of the whipping assemblies 600 is increased, and the stability of the first crankshaft 300 and the second crankshaft 400 during rotation is also increased.

The generator 700 is in transmission connection with the first rotating shaft 200, and the generator 700 is electrically connected with the motor 100.

Specifically, when the motor 100 drives the first rotating shaft 200 to rotate, the first rotating shaft can drive the generator 700 to generate electricity, and the electricity generated by the generator 700 can be supplied to the motor 100, so that a power circulation system is formed. In addition, when the motor 100 suddenly stops operating, the whipping assembly 600 can continue to rotate under the action of inertia, so as to drive the first crankshaft 300 and the second crankshaft 400 to rotate, so as to drive the first rotating shaft 200 to rotate, the first rotating shaft 200 drives the generator 700 to generate electricity, the generator 700 transmits the generated electricity to the motor 100, the motor 100 continues to do work, and thus the first crankshaft 300 and the second crankshaft 400 continue to rotate; thus, when the motor 100 drives the whipping assembly 600 to rotate and apply work, the whipping assembly 600 drives the generator 700 to generate electricity under the action of inertia, so as to provide electric energy for the motor 100, thereby greatly saving the consumption of electric energy. In addition, the first crankshaft 300 and the second crankshaft 400 of the present application may be further connected to other driven components, so that the power cycle conversion engine using inertia of the present application can not only generate power, but also transmit power, for example, convert electric energy of the electric motor 100 into mechanical energy for rotating the first crankshaft 300 and the second crankshaft 400, and transmit the mechanical energy to other components needing to rotate, so as to drive the components, thereby driving an object.

In one embodiment, the swing assembly 600 includes a connecting member 610 and a swing block 620, the connecting member 610 is fixed around the turntable 500, and the swing block 620 is hinged to the connecting member 610.

Specifically, the connecting member 610 is used for connecting the throwing block 620 and the inertia turntable, one end of the connecting member 610 is fixed to the edge of the turntable 500, the other end of the connecting member 610 is provided with a pivoting member, one section of the throwing block 620 is provided with a through hole, the pivoting member penetrates through the through hole and is fixed to the connecting member, and thus, the throwing block 620 can rotate around the pivoting member. When the turntable 500 decelerates or stops rotating, the throwing block 620 continues to drive the turntable 500 to rotate under the action of inertia, so as to drive the first crankshaft 300 or the second crankshaft 400 to rotate. In this embodiment, the throwing block has a large degree of freedom when rotating, and a limit rod is added on one side of the throwing block, two ends of the limit rod are respectively connected to the connecting pieces, and the limit rod clamps the throwing block in one rotating direction of the throwing block, so that the throwing block can only rotate in the other direction when starting, and the stability of the device is improved.

In this embodiment, a connecting rod 630 is disposed at the rod journal, and the connecting member 610 is fixed to an end of the connecting rod 630 away from the rod journal.

Specifically, the connecting rod 630 is used to extend the connecting journal to prevent the thrower 620 from rotating to impact the first crankshaft 300, the second crankshaft 400 or other adjacent throwers 620 under the action of inertia when the first crankshaft 300 or the second crankshaft 400 stops rotating. In order to increase the inertia and stability of the device, the length of the connecting rod 630 is longer than that of the throwing block 620. In actual use, the connecting rod comprises a moment arm. The length of the connecting rod is prolonged by connecting a plurality of force arms.

In this embodiment, each of the swing assemblies 600 is connected to one or more other swing assemblies 600 in sequence.

Specifically, a single or multiple whip assemblies 600 may be installed on the turntable 500 or the connecting rod diameter to increase the inertia of the whip assemblies 600 during rotation, and when the whip assemblies 600 are installed in a plurality of numbers, the whip assemblies 600 are sequentially connected, that is, one end of the connecting member 610 is fixed to one of the whip blocks 620, and the other end of the connecting member 610 is hinged to the other whip block 620, so that, when the turntable 500 decelerates or stops rotating, the whip block 620 at a far end from the axial line of the first crankshaft 300 sequentially drives the other whip blocks 620 to whip in a direction from far to near from the axial line of the first crankshaft 300, and then drives the first crankshaft 300 to rotate.

In one embodiment, the swing assembly 600 includes a lever arm and a weight increasing block, one end of the lever arm is fixed around the turntable 500, and the other end of the lever arm is connected to the weight increasing block.

Specifically, the weight increasing block may be a metal block, and in order to increase the smoothness of the rotation of the whipping assembly 600, the weight increasing block is preferably a spherical metal block. When the turntable 500 rotates, the weight increasing block is driven to rotate together around the axial line of the first crankshaft 300 or the second crankshaft 400 by the arm lever, and when the rotation speed of the first crankshaft 300 and the second crankshaft 400 decreases or stops rotating, the weight increasing block can continue to rotate under the action of inertia, so that the rotation of the first crankshaft 300 and the second crankshaft 400 can be maintained for a certain period of time.

In one embodiment, the number of the first crankshafts 300 and the second crankshafts 400 is one or more, the number of the first crankshafts 300 is equal to the number of the second crankshafts 400, and the first crankshafts 300 and the second crankshafts 400 have the same structure.

Specifically, the number of the connecting rod diameters is increased by increasing the number of the first crankshafts 300 or the second crankshafts 400, so that more whippen assemblies 600 can be connected. It should be noted that, the arrangement of the shaft diameters of the plurality of connecting rods on each of the first crankshaft 300 or the second crankshaft 400 is rotationally symmetric to the shaft axis, and the first crankshaft 300 and the second crankshaft 400 have better stationarity when driving the whipping assembly 600 to rotate.

In one embodiment, referring to fig. 2, a pulley 210 is connected to the first rotating shaft 200, and the motor 100 and the generator 700 are respectively in transmission connection with the pulley 210 through a belt.

Specifically, in order to protect the motor, a one-way bearing is installed between the first rotating shaft 200 and the belt pulley, the rotating direction of the one-way bearing is the rotating direction of the power output shaft of the motor, when the rotating direction of the first rotating shaft is opposite to that of the one-way bearing, the belt pulley does not rotate, and the first rotating shaft does not drive the power output shaft of the motor to rotate in the reverse direction, so that the one-way bearing can play a role in reducing kinetic energy loss and motor wear effects; the first rotating shaft 200 transmits power to the generator 700 through the rotation of the belt to cause the generator 700 to generate electricity.

In one embodiment, a second rotating shaft is further included, the second rotating shaft is in transmission connection with the first crankshaft 300 or the second crankshaft 400, and the generator 700 is in transmission connection with the second rotating shaft.

Specifically, a plurality of second rotating shafts may be provided, when a plurality of first crankshafts 300 or second crankshafts 400 are used, one second rotating shaft may be provided at one end of each first crankshaft 300 or second crankshaft 400, each second rotating shaft is in transmission connection with one first crankshaft 300 or one second crankshaft 400, and the plurality of second rotating shafts are in transmission connection with the generator 700 together, for example, each second rotating shaft transmits power to the generator 700 through a belt, so that more inertia of the whipping assembly 600 can be fully utilized, and the generator 700 can generate more electric quantity. A part of electric quantity generated by the generator 700 may be supplied to the motor 100, and surplus electric quantity may be stored by an electric storage device such as a charger, or may be directly supplied to the outside for recycling.

In one embodiment, the electric motor 100 is a dc motor 100, and the mobile power source is electrically connected to the dc motor 100.

Specifically, in order to simplify the driving method of the present apparatus, the apparatus may be started by using the dc motor 100, the generator 700 may be the dc generator 700 or the ac generator 700, when the generator 700 is the dc generator 700, a transformer needs to be provided in a circuit between the generator 700 and the motor 100 to adjust the voltage output by the generator 700, and when the generator 700 is the ac generator 700, a rectifier needs to be provided in a circuit between the generator 700 and the motor 100 to convert the ac output by the generator 700 into dc for the motor 100 to use.

In addition, the generator 700 can also be started by a small-sized fuel engine, and after the current generated by the engine is inverted by voltage regulation, counter pressure, voltage transformation and the like, the high-voltage high-power alternating-current motor 100 rotates to continuously drive the generator 700 to generate electricity, and the mutual conversion achieves the effect of circular rotation.

In one embodiment, referring to fig. 3, an end of the second crankshaft, which is far away from the first crankshaft, is in transmission connection with another first rotating shaft, and the first rotating shaft is in transmission connection with the motor and the generator.

In one embodiment, the first crankshaft and the second crankshaft are vertically installed and connected, the first crankshaft and the second crankshaft may also be straight shafts, a plurality of movable flappers may be installed on the first crankshaft and the second crankshaft to increase inertia power, and a plurality of movable flappers may also be connected to one movable flapper to increase inertia power. In order to increase the stability of the device, a force arm is arranged at the journal of the connecting rod, and one or more movable swinging blocks are connected to the force arm. In order to start the device, the storage battery and the speed regulator can be used for starting the direct current motor to rotate, then the direct current generator is driven to generate electricity, one part of electricity generated by the direct current generator is charged into the storage battery, the other part of electricity is supplied to the direct current motor to continuously operate and do work, and the direct current generator is driven to generate electricity, so that an electric power self-circulation supply system is formed. After the direct current motor is started, the alternating current generator is driven to generate electricity, and the alternating current generator and the alternating current motor can form power cycle conversion.

The movable throwing block can rotate freely or rotate in a limiting mode on the force arm, and the metal steel can be used as a movable inertia throwing block or a throwing ball and connected with the force arm to rotate.

The first bent axle and the positive reverse rotation of second bent axle of both ends about gear glass case rotates and drives are installing many first bent axle reaches during the second bent axle, can be at each first bent axle perhaps a gear change case is respectively installed at the upper and lower both ends of second bent axle, each first bent axle reaches be connected with a plurality ofly between the second bent axle first axis of rotation is, and is a plurality of connect through belt transmission between the first axis of rotation.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.