Flexible flapping wing type bionic water pumping device for improving water power

Abstract

A flexible flapping wing type bionic water pumping device for improving water power comprises a water pumping execution mechanism and a flow channel, the flow channel is fixed to the lower portion of a rack of the water pumping execution mechanism, and the water pumping execution mechanism comprises the rack, a linear motion module, a swing motion module, a driving module and flexible flapping wings. The linear motion module and the swing motion module are symmetrically installed on the two sides of the machine frame in the middle and can move synchronously, the driving module is installed on the upper portion of the machine frame in the middle, and the swing motion module is fixed to a linear bearing sliding base of the linear motion module so that the swing motion module can do linear reciprocating motion on a guide shaft along with the linear bearing sliding base. The flexible flapping wing is fastened with a driven shaft of the swinging motion module, and the flexible flapping wing is driven by the driven shaft to perform reciprocating swinging motion. The water body can be propelled efficiently, high-efficiency large-flow water pumping can be achieved in a shallow water area under the low-lift working condition, meanwhile, threat to overflowing organisms in the water body can be avoided, and biological friendliness is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of water power improvement and water pumping equipment, and in particular relates to a flexible flapping-wing type bionic water pumping device for improving water power. Background Art

[0002] The plain river network area is low-lying, with a gentle river gradient and weak hydrodynamics. In addition, human means seriously interfere with the natural evolution of the river, resulting in dead ends and even dead water areas in the river, which destroys the overall connectivity of the water system, leading to deterioration of the water quality of the river, eutrophication, black and smelly water, etc. In practice, measures such as dredging channels and adding sluice pump water conservancy facilities are often used to change the hydraulic characteristics of the river water, increase the average flow rate of the water body, enhance the reoxygenation capacity of the water body, and improve the water environment quality of the river. However, the effect of dredging channels is very limited, and the cost of land acquisition, demolition and investment is very high, which is not conducive to large-scale promotion. Sluice pump water conservancy facilities are often inefficient and unstable in small river networks with low head and shallow water depth. In addition, the high-speed rotating impeller of the axial flow pump will threaten the organisms in the water body, making it difficult to effectively solve the problem of water quality deterioration in small rivers.

[0003] In recent years, the flapping-wing propulsion method based on bionics has shown unique advantages. Its design is derived from the tail fins of fish and the wings of birds, and has the advantages of high propulsion efficiency, good flexibility, and low noise. Inspired by this, the flapping-wing movement will produce a reaction force on the water body. When the flapping-wing device is fixed relative to the water body, this reaction force will cause the water body to flow to achieve the pumping function, thereby improving the fluidity of the river water flow. This flapping-wing pumping method can maintain a high-efficiency large-flow pumping effect in shallow water areas under low-lift conditions, and is more suitable for improving the hydrodynamics of river networks and improving the deterioration of water quality in small rivers. Summary of the invention

[0004] In order to overcome the shortcomings of the existing technology, the present invention provides a flexible flapping-wing type bionic water pumping device for enhancing hydrodynamics. Based on the excellent water-pushing performance of the fish tail fin, the flapping wings can efficiently propel the water body through the composite motion of linear reciprocating motion and swinging reciprocating motion, thereby achieving the purpose of pumping water. The present invention can achieve high-efficiency and large-flow water pumping in shallow water areas under low-lift conditions while avoiding the threat to passing organisms in the water body, thereby achieving biological friendliness.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A flexible flapping-wing type bionic water pumping device for improving water power comprises a water pumping actuator and a flow channel, wherein the flow channel is fixed to the lower part of the frame of the water pumping actuator, the water pumping actuator comprises a frame, a linear motion module, a swinging motion module, a driving module and a flexible flapping wing, the linear motion module and the swinging motion module are symmetrically installed on both sides of the frame and can move synchronously, the driving module is centrally installed above the frame, the swinging motion module is fixed on the linear bearing slide of the linear motion module, so that the swinging motion module can reciprocate linearly on the guide shaft with the linear bearing slide, the flexible flapping wing is fastened to the driven shaft of the swinging motion module, and the flexible flapping wing reciprocates and swings driven by the driven shaft.

[0007] Furthermore, the swing motion module includes a left end plate, a support rod, a right end plate, a driven shaft, a driven gear, a bearing, a rotating shaft and a fan-shaped gear connecting rod. The left end plate and the right end plate are connected together by the four support rods and bolts. Two pairs of bearings are installed on the left and right end plates. The driven shaft and the rotating shaft and the two pairs of bearings are positioned by shoulders and sleeves to limit axial displacement. The driven gear and the fan-shaped gear connecting rod are positioned by shoulders and sleeves and are connected to the flapping shaft and the rotating shaft key respectively. The fan-shaped gear connecting rod is meshed with the driven gear gear, and the upper part of the fan-shaped gear connecting rod is hinged to the crank of the crank shaft by a hinge pin.

[0008] Furthermore, the flexible flapping wing is composed of a hard aluminum core part and a flexible rubber part, wherein the flexible rubber is cast to wrap the hard aluminum core part.

[0009] Preferably, the cross-sectional shape of the flexible flapping wing includes but is not limited to a rectangular, trapezoidal, teardrop-shaped or NACA series airfoil, and six holes are drilled at both ends of the hard aluminum core to connect with the driven shaft by bolts.

[0010] More preferably, the rotation center of the flexible flapping wing is located at 1 / 2 to 1 / 5 times the chord length of the leading edge.

[0011] Furthermore, the flow channel includes a flow channel shell and arc-shaped plates fixed on both sides of the shell. The flow channel shell has symmetrical arc-shaped openings on both sides of the upper part to prevent interference between the fan gear connecting rod and the shell. The arc-shaped plate has a U-shaped groove for connecting the flapping wing and the driven shaft to avoid interference with the flow channel during the linear motion along the guide shaft. The arc-shaped plates on both sides of the flow channel make the internal structure of the flow channel a contraction and expansion structure to improve the water pumping performance.

[0012] There are two groups of linear motion modules and swing motion modules, and the two sides of the flapping wing are respectively fastened to the driven shafts of two different swing motion modules. Driven by the two linear motion modules and the two swing motion modules, the flapping wing realizes a composite motion of linear reciprocating motion and swing reciprocating motion, thereby realizing the water pumping function.

[0013] Preferably, the linear motion module includes a guide shaft support, a guide shaft and a linear bearing slide, the guide shaft is fixed to the frame through the guide shaft support, and the linear bearing slide can reciprocate up and down along the guide shaft.

[0014] The driving module includes a seat bearing, a crank shaft, a synchronous belt drive, a motor and a coupling. The motor is fixed to the bracket through a motor fixing seat. The motor drives the crank shaft to rotate through the synchronous belt drive. The crank shaft is symmetrically fixed on the left and right sides of the frame by the seat bearing, and is connected by a coupling to achieve continuous synchronous rotation. The transmission ratio of the synchronous belt drive is 1.

[0015] The beneficial effects of the present invention are mainly manifested in: the flapping wings can realize the composite motion of linear motion and swinging motion at the same time through a simple mechanical structure and a reduction motor; the structure has good stability and performance and runs smoothly; under low-frequency motion, flapping wings of different shapes and stiffness can be applied to different environments to achieve high-efficiency, large-flow water pumping; it is more suitable for small river channels and plain river networks with low lift and shallow water depth, effectively improving the water dynamics of the river network and improving the problem of water quality deterioration; it can also avoid posing a threat to fish and other organisms in the water body, thus achieving biological friendliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the flapping-wing bionic water-pushing device of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the water pump actuator;

[0018] Figure 3 It is a schematic diagram of the structure of the linear motion module and the swing motion module;

[0019] Figure 4 is a schematic diagram of a flexible flapping wing structure;

[0020] Figure 5 Schematic diagram of the connection structure between the flapping wing and the driven shaft;

[0021] Figure 6 Schematic diagram of flow channel structure;

[0022] Figure 7 It is a structural schematic diagram of a flapping-wing bionic water-pushing device of Example 2.

[0023] In the figure, 1-pump actuator, 2-flow channel, 11-frame, 12-linear motion module, 121-guide shaft support, 122-guide shaft, 123-linear bearing slide 13-swing motion module, 131-left end plate, 132-support rod, 133-right end plate, 134-driven shaft, 135-driven gear, 136-bearing, 137-rotating shaft, 138-sector gear connecting rod 14-drive module, 141-seat bearing, 142-hinge pin, 143-crank shaft, 144-synchronous belt drive, 145-motor, 146-coupling, 15-flexible flapping wing, 151-hard aluminum core part, 152-flexible rubber part, 21-flow channel housing, 22-arc plate. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Example 1

[0026] Reference Figure 1 to Figure 6 A flexible flapping-wing type bionic water pumping device for improving water power comprises a water pumping actuator 1 and a flow channel 2. The water pumping actuator 1 comprises a frame 11, a linear motion module 12, a swing motion module 13, a drive module 14 and a flexible flapping wing 15. The flow channel 2 is fastened to the lower part of the frame 11 of the water pumping actuator 1 by bolts. The linear motion module 12 and the swing motion module 13 are symmetrically installed on both sides of the frame 11 and can move synchronously. The drive module 14 is centrally installed above the frame 11. The linear motion module 12 comprises a guide shaft support 121, a guide shaft 122 and a linear bearing slide 123. The guide shaft 122 is connected to the guide shaft support 121 by a guide shaft support 122. 1 is fixed on the frame 11, the linear bearing slide 123 can reciprocate up and down along the guide shaft 122, the swing motion module 13 is fixed on the linear bearing slide 123 of the linear motion module 12 by bolt connection, so that the swing motion module 13 can reciprocate linearly on the guide shaft 122 with the linear bearing slide 123, the flexible flapping wing 15 and the driven shaft 134 of the swing motion module 13 are fastened by bolts, and can reciprocate and swing under the drive of the driven shaft 134. The flexible flapping wing 15 can realize the composite motion of linear reciprocating motion and swinging reciprocating motion under the drive of the two linear motion modules 12 and the two swing motion modules 13, thereby realizing the water pumping function.

[0027] like Figure 2As shown, the drive module 14 is composed of a seat bearing 141, a crank shaft 143, a synchronous belt drive 144, a motor 145, and a coupling 146. The motor 145 is fixed to the bracket 11 through a motor fixing seat. The motor 145 drives the crank shaft 143 to rotate through the synchronous belt drive 144. The crank shaft 143 is symmetrically fixed on the left and right sides of the frame 11 by the seat bearing 141, and is connected by the coupling 146 to realize continuous synchronous rotation. The transmission ratio of the synchronous belt drive 144 is 1.

[0028] like Figure 3 As shown, the swing motion module 13 includes a left end plate 131, a support rod 132, a right end plate 133, a driven shaft 134, a driven gear 135, a bearing 136, a rotating shaft 137, and a fan-shaped gear connecting rod 138. The left end plate 131 and the right end plate 133 are connected together by the four support rods 132 and bolts, and two pairs of bearings 136 are installed on the left and right end plates. The driven shaft 134 and the rotating shaft 137 and the two pairs of bearings 136 are positioned by shoulders and sleeves to limit axial displacement. The driven gear 135 and the fan-shaped gear connecting rod 138 are positioned by shoulders and sleeves and are key-connected to the flapping shaft 134 and the rotating shaft 137 respectively. The fan-shaped gear connecting rod 138 is meshed with the driven gear 135, and the upper part of the fan-shaped gear connecting rod 138 is hinged to the crank of the crank shaft 143 through a hinge pin 142.

[0029] Further, the cross-sectional shape of the flexible flapping wing 15 includes but is not limited to a rectangular, a trapezoidal, a teardrop-shaped, and a NACA series airfoil. The flexible flapping wing 15 can be a flexible flapping wing, such as Figure 4 As shown, the structure is composed of a hard aluminum core part 151 and a flexible rubber part 152, wherein the flexible rubber is cast to wrap the hard aluminum core part, as shown in FIG. Figure 5 As shown, six holes are drilled at both ends of the hard aluminum core and connected to the driven shaft 134 by bolts.

[0030] The rotation center of the flexible flapping wing 15 is located at 1 / 2 to 1 / 5 times the chord length of the leading edge.

[0031] like Figure 5 As shown, the flow channel 2 consists of a flow channel shell 21 and arc plates 22 fixed on both sides of the shell. The flow channel shell 21 has symmetrical arc openings on both sides of the upper part to prevent the interference between the fan gear connecting rod 138 and the shell. The arc plate 22 has a U-shaped groove for connecting the flapping wing and the driven shaft to avoid interference with the flow channel during the linear motion along the guide shaft. The arc plates 22 on both sides of the flow channel 2 make the internal structure of the flow channel a contraction and expansion structure to improve the water pumping performance.

[0032] The flapping-wing bionic water pump device can adjust the amplitude of the linear motion and the swinging motion by adjusting the length of the connecting rod of the sector gear connecting rod 138 and the length of the crank of the crank shaft 143.

[0033] In this embodiment, a simple mechanical structure and a reduction motor can be used to achieve a composite motion of linear motion and swinging motion of the flapping wings. The structure has good stability and performance, and runs smoothly. Under low-frequency motion, it can pump water with high efficiency and large flow. It is more suitable for small river channels and plain river networks with low lift and shallow water depth. It can effectively enhance the hydrodynamics of the river network and improve the problem of water quality deterioration. It can also avoid posing a threat to fish and other organisms in the water body, thus achieving biological friendliness.

[0034] Example 2

[0035] like Figure 7 Another flexible flapping-wing bionic water pumping device for improving water power is shown, which is based on Example 1 and differs from Example 1 in that it has two pumping actuators 1 connected in series and a flow channel. Specifically, the length of the flow channel 2 in this embodiment is correspondingly increased.

[0036] The remaining features and principles of this embodiment are consistent with those of Embodiment 1. In this embodiment, by adjusting the distance and relative motion phase difference between the two water pumping actuators (1), the wake of the previous flapping wing provides additional kinetic energy for the subsequent flapping wing movement, thereby improving the overall water pumping performance and reducing energy consumption.

[0037] The contents described in the embodiments of this specification are merely enumerations of implementation forms of the inventive concept and are for illustrative purposes only. The protection scope of the present invention should not be considered to be limited to the specific forms described in this embodiment, and the protection scope of the present invention also extends to equivalent technical means that can be thought of by ordinary technicians in this field based on the inventive concept.

Claims

1. A flexible flapping-wing bionic water pumping device for improving water power, characterized in that: The device includes a water pumping actuator and a flow channel, the flow channel is fixed at the lower part of the frame of the water pumping actuator, the water pumping actuator includes a frame, a linear motion module, a swinging motion module, a driving module and a flexible flapping wing, the linear motion module and the swinging motion module are symmetrically installed on both sides of the frame and can move synchronously, the driving module is centrally installed above the frame, the swinging motion module is fixed on the linear bearing slide of the linear motion module, so that the swinging motion module can reciprocate linearly on the guide shaft with the linear bearing slide, the flexible flapping wing is fastened to the driven shaft of the swinging motion module, and the flexible flapping wing reciprocates and swings driven by the driven shaft.

2. A flexible flapping-wing bionic water pumping device for improving water power as claimed in claim 1, characterized in that: The swing motion module includes a left end plate, a support rod, a right end plate, a driven shaft, a driven gear, a bearing, a rotating shaft and a fan-shaped gear connecting rod. The left end plate and the right end plate are connected together by the four support rods and bolts. Two pairs of bearings are installed on the left and right end plates. The driven shaft and the rotating shaft and the two pairs of bearings are positioned by shoulders and sleeves to limit axial displacement. The driven gear and the fan-shaped gear connecting rod are positioned by shoulders and sleeves and are connected to the flapping shaft and the rotating shaft key respectively. The fan-shaped gear connecting rod is meshed with the driven gear gear, and the upper part of the fan-shaped gear connecting rod is hinged to the crank of the crank shaft through a hinge pin.

3. A flexible flapping-wing bionic water pumping device for improving water power as claimed in claim 1 or 2, characterized in that: The flexible flapping wing consists of a hard aluminum core part and a flexible rubber part, wherein the flexible rubber is cast to wrap the hard aluminum core part.

4. A flexible flapping-wing bionic water pumping device for improving water power as claimed in claim 3, characterized in that: The cross-sectional shape of the flexible flapping wing is rectangular, trapezoidal, teardrop-shaped or NACA series airfoil, and six holes are drilled at both ends of the hard aluminum core to connect with the driven shaft through bolts.

5. A flexible flapping-wing bionic water pumping device for improving water power as claimed in claim 3, characterized in that: The rotation center of the flexible flapping wing is located at 1 / 2 to 1 / 5 times the chord length of the leading edge.

6. A flexible flapping-wing bionic water pumping device for improving water power as claimed in claim 1 or 2, characterized in that: The flow channel comprises a flow channel shell and arc plates fixed on both sides of the shell. The upper part of the flow channel shell has symmetrical arc openings on both sides. The arc plate has a U-shaped groove for connecting the flapping wing and the driven shaft.

7. A flexible flapping-wing bionic water pumping device for improving water power as claimed in claim 1 or 2, characterized in that: There are two groups of linear motion modules and swing motion modules, and the two sides of the flapping wing are respectively fastened to the driven shafts of two different swing motion modules. Driven by the two linear motion modules and the two swing motion modules, the flapping wing realizes a composite motion of linear reciprocating motion and swing reciprocating motion, thereby realizing the water pumping function.

8. A flexible flapping-wing bionic water pumping device for improving water power as claimed in claim 1 or 2, characterized in that: The linear motion module comprises a guide shaft support, a guide shaft and a linear bearing slide. The guide shaft is fixed on the frame through the guide shaft support, and the linear bearing slide can reciprocate up and down along the guide shaft.

9. A flexible flapping-wing bionic water pumping device for improving water power as claimed in claim 1 or 2, characterized in that: The driving module includes a seat bearing, a crank shaft, a synchronous belt drive, a motor and a coupling. The motor is fixed to the bracket through a motor fixing seat. The motor drives the crank shaft to rotate through the synchronous belt drive. The crank shaft is symmetrically fixed on the left and right sides of the frame by the seat bearing, and is connected by a coupling to achieve continuous synchronous rotation. The transmission ratio of the synchronous belt drive is 1.

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