A PTO device based on pitch, roll and heave

Abstract

The present invention discloses a PTO device based on pitch, roll and heave, comprising: a raft assembly, a centripetal weight universal joint assembly, a one-way conversion mechanism, a heave rocker arm, and a parallel rod. The raft roll power is output through the one-way conversion mechanism installed on the centripetal weight universal joint assembly, the raft pitch power is output through the one-way conversion mechanism installed inside the raft assembly, and the raft heave power is output through the one-way conversion mechanism installed on the heave rocker arm. The device can efficiently capture the three-degree-of-freedom wave energy of the raft heave, pitch and roll and output its power. The device has a simple structure, is easy to manufacture, and is convenient to install and moor.

Description

Technical Field

[0001] The invention relates to the technical field of capturing wave energy and outputting its power, and in particular to a PTO device based on pitch, roll and heave. Background Art

[0002] Ocean wave energy is a renewable clean energy with high energy density, wide distribution and abundant resources. However, floating wave energy capture devices produce pitch, roll and heave motions under the excitation of wave energy. How to decouple pitch, roll and heave motions and control them separately to achieve efficient power output is our goal.

[0003] The use of a PTO device based on pitch, roll and heave can perfectly solve the decoupling of multiple degrees of freedom, and can individually control the PTO of pitch, roll and heave motion to achieve the purpose of efficient energy absorption. Summary of the invention

[0004] The present invention proposes a power output device (PTO) which can perfectly solve the decoupling problem of three degrees of freedom motion of pitch, roll and heave, and can output the pitch, roll and heave motions.

[0005] To achieve the above objectives, the following technical solutions are used:

[0006] A PTO device based on pitch, roll and heave includes: a raft assembly, a centripetal weight universal joint assembly, a one-way conversion mechanism, a heave rocker arm, and a parallel rod;

[0007] The raft assembly includes: a float with a hollow center, two sets of float bearing seats fixedly installed in the middle of the hollow center of the float in the horizontal axial direction, and a one-way conversion mechanism installed inside the float; wherein the two sets of float bearing seats are used to support the transverse axis of the combined section, and the input shaft of the one-way conversion mechanism is on the same axis as the float bearing seats.

[0008] The centripetal weight universal joint assembly includes: a centripetal weight and a combined joint; wherein the centripetal weight always points to the center of the earth's gravity, and the two ends of the longitudinal axis of the centripetal weight are assembled with two sets of combined joint bearing seats, and the combined joint can roll around the longitudinal axis of the centripetal weight, and the stepped axis end of the longitudinal axis of the centripetal weight is inserted into the hollow input shaft of the one-way conversion mechanism installed on the side of the combined joint for connection and assembly. Due to the rolling of the combined joint, the one-way conversion mechanism is driven to twist, and the reciprocating roll of the float is converted into a one-way rotating power output; wherein, the other end of the longitudinal axis of the centripetal weight is fixedly connected to the transverse axis of the centripetal weight, and the transverse axis of the centripetal weight is orthogonal in the air directly above the longitudinal axis of the centripetal weight, and the two ends are assembled with the shaft holes of the rocker arm, and the rocker arm can swing up and down around the transverse axis of the centripetal weight, and the transverse axis of the centripetal weight is stepped. The shaft end is inserted into the hollow input shaft of the one-way conversion mechanism installed on the side of the rocker arm end for connection and assembly. The rocker arm swings and drives the one-way conversion mechanism to twist, thereby converting the vertical swing of the float into a one-way rotational power output. Among them, the two ends of the combined section transverse shaft are assembled with two sets of float bearing seats, which are located in the transverse axial direction of the float. The float can pitch around the combined section transverse shaft. The stepped shaft end is connected to the input shaft of the one-way conversion mechanism installed inside the float through a coupling shaft. When the float pitches around the transverse shaft, the one-way conversion mechanism twists back and forth around its input shaft with the float pitching, and converts the reciprocating twisting into a one-way rotational power output. Among them, the lower end shaft pin of the centripetal hammer is assembled with the two rod shaft holes, and the rod can swing up and down around the lower end shaft pin of the centripetal hammer.

[0009] The one-way conversion mechanism includes: a driving sprocket I and a driving sprocket II and a driving tensioner coaxially fixedly mounted on the input shaft, a ratchet fixedly mounted in the middle of the output shaft, a passive sprocket I on the right side of the ratchet and connected with a bearing sleeve to be assembled on the output shaft, and a chain transmission is performed through the chain and the driving sprocket I. Here, the chain is closed and the path around the driving sprocket I and the passive sprocket I is in an 'O' shape; a ratchet pawl I is mounted on the left side of the passive sprocket I and cooperates with the ratchet; the passive sprocket II on the left side of the ratchet is connected with a bearing sleeve to be assembled on the output shaft. On the output shaft, the chain is driven by the guide wheel and the driving sprocket II installed between the passive sprocket II and the driving sprocket II. Here, the chain is open, one end is fixed on the guide wheel, and the other end is fixed on the driving sprocket II. The middle part is in a 'W' shape by passing through the passive sprocket II path; the pawl II is installed on the right side of the passive sprocket II and cooperates with the ratchet wheel; the passive tensioning wheel is coaxially fixedly assembled with the guide wheel, and is driven by the chain and the active tensioning wheel chain. Here, the chain is closed, and the path passing through the active tensioning wheel and the passive tensioning wheel is in an 'O' shape.

[0010] The operating principle of the one-way conversion mechanism is: when the input shaft rotates clockwise, it drives the active sprocket I, the active sprocket II and the active tensioning wheel to rotate clockwise, and transmits power to the lower level through the chain; among them, the passive sprocket I rotates clockwise, drives the ratchet I to rotate clockwise and engage with the ratchet, pushes the ratchet to rotate clockwise, and the power is output by the output shaft; among them, the active sprocket II releases the chain clockwise, and the passive tensioning wheel drives the coaxial guide wheel to tighten the chain clockwise, and the chain drives the passive sprocket II to rotate counterclockwise, driving the ratchet II to rotate counterclockwise and separate from the ratchet; when the input shaft When rotating counterclockwise, the driving sprocket Ⅰ, the driving sprocket Ⅱ and the driving tensioning wheel are driven to rotate counterclockwise, and the power is transmitted to the lower level through the chain; wherein, the passive sprocket Ⅰ rotates counterclockwise, and the pawl Ⅰ is driven to rotate counterclockwise and separate from the ratchet; wherein, the driving sprocket Ⅱ tightens the chain counterclockwise, and the passive tensioning wheel drives the coaxial guide wheel to release the chain counterclockwise, and the chain drives the passive sprocket Ⅱ to rotate clockwise, and drives the pawl Ⅱ to rotate clockwise and mesh with the ratchet, pushing the ratchet to rotate clockwise, and the output shaft outputs power; in this way, the reciprocating torsional motion is converted into a unidirectional rotation torque.

[0011] The vertical swing rocker arm includes: a rocker arm, rocker arm shaft holes at both ends of the rocker arm, and a one-way conversion mechanism installed on the sides of both ends of the rocker arm. Its function is to convert the vertical swing motion into torsion and output its power through the one-way conversion mechanism.

[0012] The parallel rod includes: a rod and rod shaft holes at two U-shaped ends of the rod, and its function is to form a parallelogram with the vertical swing rocker arm, keep the two centripetal hammers parallel and always point to the center of the earth's gravity.

[0013] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention has 11 drawings in total, among which:

[0015] Figure 1 The following is an abstract of the present invention.

[0016] Figure 2 It is a schematic diagram of the raft assembly structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the centripetal weight universal joint assembly of the present invention.

[0018] Figure 4 It is a schematic diagram of the mechanical structure of the one-way conversion mechanism of the present invention.

[0019] Figure 5 It is a schematic diagram of the heave rocker arm structure of the present invention.

[0020] Figure 6 It is a schematic diagram of the parallel rod structure of the present invention.

[0021] Figure 7 It is a schematic diagram of the pitching motion state of the present invention.

[0022] Figure 8 It is a schematic diagram of the rolling motion state of the present invention.

[0023] Fig. 9 It is a schematic diagram of the heaving motion state of the present invention.

[0024] Fig.10 It is a schematic diagram of the overall motion state of the present invention.

[0025] Fig.11 It is an exploded view of the device of the present invention.

[0026] In the figure: 1, raft assembly, 1a, float, 1b, float bearing seat, 2, centripetal weight universal joint assembly, 2a, centripetal weight, 2a.1, centripetal weight longitudinal axis, 2a.2, centripetal weight transverse axis, 2a.3, centripetal weight lower end shaft pin, 2b, combined joint, 2b.1, combined joint transverse axis, 2b.2, combined joint bearing seat, 3, one-way conversion mechanism, 3a, input shaft, 3b, output shaft, 3 c.1 driving sprocket Ⅰ, 3c.2 driving sprocket Ⅱ, 3d.1, passive sprocket Ⅰ, 3d.2, passive sprocket Ⅱ, 3e, ratchet, 3e.1, pawl Ⅰ, 3e.2, pawl Ⅱ, 3f, guide wheel, 3g, passive tensioning wheel, 3h, active tensioning wheel, 3i, chain, 4, vertical swing rocker arm, 4a, rocker arm, 4a.1, rocker arm shaft hole, 5, parallel rod, 5a, rod, 5b, rod shaft hole. DETAILED DESCRIPTION

[0027] like Figures 1 to 11 A PTO device based on pitch, roll and heave shown in the figure comprises: a raft assembly 1, a centripetal weight universal joint assembly 2, a one-way conversion mechanism 3, a heave rocker arm 4, and a parallel rod 5.

[0028] The raft assembly 1 includes: a float 1a with a hollow center, two sets of float bearing seats 1b fixed in the horizontal and axial directions in the hollow center of the float 1a, and a one-way conversion mechanism 3 installed inside the float 1a; wherein, the two sets of float bearing seats 1b are used to support the combined section transverse axis 2b.1, and the input shaft 3a of the one-way conversion mechanism 3 is on the same axis as the float bearing seats 1b.

[0029] The centripetal weight universal joint assembly 2 includes: a centripetal weight 2a and a combined joint 2b; wherein the centripetal weight 2a always points to the center of the earth's gravity, and the two ends of the centripetal weight longitudinal axis 2a.1 are assembled with two sets of combined joint bearing seats 2b.2, and the combined joint 2b can roll around the centripetal weight longitudinal axis 2a.1. The stepped shaft end of the centripetal weight longitudinal axis 2a.1 is inserted into the hollow input shaft 3a of the one-way conversion mechanism 3 installed on the side of the combined joint 2b for connection and assembly. Due to the rolling of the combined joint 2b, the one-way conversion mechanism 3 is driven to twist, and the reciprocating rolling of the float 1a is converted into a one-way rotating power output; wherein, the other end of the centripetal weight longitudinal axis 2a.1 is fixedly connected with the centripetal weight transverse axis 2a.2, and the centripetal weight transverse axis 2a.2 is orthogonal in the air directly above the centripetal weight longitudinal axis 2a.1, and the two ends are assembled with the rocker arm shaft hole 4a.1, and the rocker arm 4a can swing up and down around the centripetal weight transverse axis 2a.2. The stepped shaft end of the shaft 2a.2 is inserted into the hollow input shaft 3a of the one-way conversion mechanism 3 installed on the side of the rocker arm 4a end for connection and assembly. The swing of the rocker arm 4a drives the one-way conversion mechanism 3 to twist, and the vertical swing of the float 1a is converted into a one-way rotation power output. Among them, the two ends of the combined section transverse shaft 2b.1 are matched with the two sets of float bearing seats 1b, which are located in the transverse axial direction of the float 1a. The float 1a can pitch around the combined section transverse shaft 2b.1, and its stepped shaft end is connected with the input shaft 3a of the one-way conversion mechanism 3 installed inside the float 1a through a coupling shaft. When the float 1a pitches around the transverse axis, the one-way conversion mechanism 3 twists back and forth around its input shaft 3a with the pitch of the float 1a, and converts the reciprocating twisting into a one-way rotation power output. Among them, the lower end shaft pin 2a.3 of the centripetal hammer is matched with the two rod shaft holes 5b, and the rod 5a can swing up and down around the lower end shaft pin 2a.3 of the centripetal hammer.

[0030] The one-way conversion mechanism 3 includes: a driving sprocket Ⅰ3c.1 and a driving sprocket Ⅱ3c.2 and a driving tensioning wheel 3h coaxially fixedly mounted on the input shaft 3a, a ratchet 3e fixedly mounted in the middle of the output shaft 3b, a passive sprocket Ⅰ3d.1 on the right side of the ratchet 3e and connected with a bearing sleeve and assembled on the output shaft 3b, and driven by a chain 3i and the driving sprocket Ⅰ3c.1. Here, the chain 3i is closed, and the path around the driving sprocket Ⅰ3c.1 and the passive sprocket Ⅰ3d.1 is in an 'O' shape; the ratchet Ⅰ3e.1 is mounted on the left side of the passive sprocket 3d.1 and cooperates with the ratchet 3e; the passive sprocket Ⅱ3d.2 on the left side of the ratchet 3e is connected with a bearing sleeve and assembled On the output shaft 3b, the chain 3i is used to transmit the chain drive to the guide wheel 3f and the driving sprocket Ⅱ3c.2 installed between the passive sprocket Ⅱ3d.2 and the driving sprocket Ⅱ3c.2. Here, the chain 3i is open, one end is fixed on the guide wheel 3f, the other end is fixed on the driving sprocket Ⅱ3c.2, and the middle part is in a 'W' shape through the path of the passive sprocket Ⅱ3d.2; the ratchet 3e.2 is installed on the right side of the passive sprocket 3d.2 and cooperates with the ratchet 3e; the passive tensioning wheel 3g is coaxially fixedly assembled with the guide wheel 3f, and the chain drive is transmitted through the chain 3i and the driving tensioning wheel 3h. Here, the chain 3i is closed, and the path of the active tensioning wheel 3h and the passive tensioning wheel 3g is in an 'O' shape.

[0031] The operating principle of the one-way conversion mechanism 3 is: when the input shaft 3a rotates clockwise, the driving sprocket Ⅰ3c.1, the driving sprocket Ⅱ3c.2 and the driving tensioning wheel 3h are driven to rotate clockwise, and the power is transmitted to the lower level through the chain 3i; wherein, the passive sprocket Ⅰ3d.1 rotates clockwise, drives the ratchet Ⅰ3e.1 to rotate clockwise and mesh with the ratchet 3e, pushes the ratchet 3e to rotate clockwise, and the power is output by the output shaft 3b; wherein, the driving sprocket Ⅱ3c.2 releases the chain 3i clockwise, and the passive tensioning wheel 3g drives the coaxial guide wheel 3f to tighten the chain 3i clockwise, and the chain 3i drives the passive sprocket Ⅱ3d.2 to rotate counterclockwise, and drives the ratchet Ⅱ3e.2 to rotate counterclockwise and separate from the ratchet 3e; when the input shaft 3a rotates clockwise, the driving sprocket Ⅰ3c.1 rotates clockwise, and the driven tensioning wheel 3g drives the coaxial guide wheel 3f to tighten the chain 3i clockwise, and the chain 3i rotates counterclockwise around the passive sprocket Ⅱ3d.2, and drives the ratchet Ⅱ3e.2 to rotate counterclockwise and separate from the ratchet 3e; When the shaft 3a rotates counterclockwise, it drives the active sprocket Ⅰ3c.1, the active sprocket Ⅱ3c.2 and the active tensioning wheel 3h to rotate counterclockwise, and transmits power to the lower level through the chain 3i; wherein, the passive sprocket 3d.1 rotates counterclockwise, drives the pawl Ⅰ3e.1 to rotate counterclockwise and separate from the ratchet 3e; wherein, the active sprocket Ⅱ3c.2 tightens the chain 3i counterclockwise, and the passive tensioning wheel 3g drives the coaxial guide wheel 3f to release the chain 3i counterclockwise, and the chain 3i drives the passive sprocket Ⅱ3d.2 to rotate clockwise, drives the pawl Ⅱ3e.2 to rotate clockwise and engage with the ratchet 3e, and pushes the ratchet 3e to rotate clockwise, and the power is output by the output shaft 3b; in this way, the reciprocating torsional motion is converted into a unidirectional rotation torque.

[0032] The heave rocker arm 4 comprises: a rocker arm 4a, rocker arm shaft holes 4a.1 at both ends of the rocker arm 4a, and a one-way conversion mechanism 3 installed on the sides of both ends of the rocker arm 4a, whose function is to convert the heave motion into torsion and output its power through the one-way conversion mechanism 3.

[0033] The parallel rod 5 comprises a rod 5a and rod shaft holes 5b at two U-shaped ends of the rod 5a, and its function is to form a parallelogram with the heave rocker arm 4, keep the two centripetal weights 2a parallel and always point to the center of the earth's gravity.

[0034] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A PTO device based on pitch, roll and heave, characterized in that: include, A raft assembly (1), a centripetal weight universal joint assembly (2), a one-way conversion mechanism (3), a heave rocker arm (4), and a parallel rod (5); The raft assembly (1) comprises: a float (1a) with a hollowed-out middle portion, two sets of float bearing seats (1b) fixed in the horizontal axial direction in the hollowed-out middle portion of the float (1a), a one-way conversion mechanism (3) installed inside the float (1a), and an input shaft (3a) of the one-way conversion mechanism (3) and the float bearing seat (1b) on the same axis; The centripetal weight universal joint assembly (2) comprises: a centripetal weight (2a), a combined joint (2b), two ends of the centripetal weight longitudinal axis (2a.1) are assembled with two sets of combined joint bearing seats (2b.2), the combined joint (2b) can rock around the centripetal weight longitudinal axis (2a.1), the stepped shaft end of the centripetal weight longitudinal axis (2a.1) is inserted into the hollow input shaft (3a) of the one-way conversion mechanism (3) installed on the side of the combined joint (2b) and connected and assembled with the hollow input shaft (3a), the other end is fixedly connected with the centripetal weight transverse axis (2a.2), the centripetal weight transverse axis (2a.2) is orthogonal in the air directly above the centripetal weight longitudinal axis (2a.1), and the two ends are assembled with the rocker arm shaft hole (4a.1), the rocker arm (4a) can rock around the centripetal weight transverse axis (2a. 2) swing up and down, the stepped shaft end of the centripetal weight transverse shaft (2a.2) is inserted into the hollow input shaft (3a) of the one-way conversion mechanism (3) installed on the side of the rocker arm (4a) and connected and assembled with the hollow input shaft (3a), the two ends of the combined section transverse shaft (2b.1) are matched and assembled with two sets of float bearing seats (1b), located in the transverse axial direction of the float (1a), and the float (1a) can swing vertically around the combined section transverse shaft (2b.1), the stepped shaft end of the combined section transverse shaft (2b.1) is connected with the input shaft (3a) of the one-way conversion mechanism (3) installed inside the float (1a) through the coupling shaft, the lower end shaft pin (2a.3) of the centripetal weight is matched and assembled with the two rod shaft holes (5b), and the rod (5a) can swing up and down around the lower end shaft pin (2a.3) of the centripetal weight; The heave rocker arm (4) comprises: a rocker arm (4a), rocker arm shaft holes (4a.1) at both ends of the rocker arm (4a), and a one-way conversion mechanism (3) installed on the sides of both ends of the rocker arm (4a); the heave rocker arm (4) is located at the upper end of two sets of centripetal weight universal joint assemblies (2), and each end is connected to one set of centripetal weight universal joint assemblies (2); The parallel rod (5) comprises: a rod (5a) and rod shaft holes (5b) at two U-shaped ends of the rod (5a); the parallel rod (5) is located at the lower end of two sets of centripetal weight universal joint assemblies (2), and each of the two ends is connected to a set of centripetal weight universal joint assemblies (2).

2. The PTO device based on pitch, roll and heave according to claim 1, characterized in that: The one-way conversion mechanism (3) comprises: a driving sprocket I (3c.1) and a driving sprocket II (3c.2) and a driving tensioning wheel (3h) coaxially fixedly mounted on an input shaft (3a), a ratchet (3e) fixedly mounted on the middle of an output shaft (3b), a passive sprocket I (3d.1) on the right side of the ratchet (3e) being sleeved with a bearing and assembled on the output shaft (3b), and a chain (3i) and a driving sprocket I (3c.1) chain transmission, wherein the chain (3i) is closed and passes through the driving sprocket I (3c.1) and the passive sprocket I (3d.1) in an 'O' shape, a ratchet pawl I (3e.1) being mounted on the left side of the passive sprocket I (3d.1) and cooperating with the ratchet (3e), and a passive sprocket II (3d.2) on the left side of the ratchet (3e) being sleeved with a bearing and assembled It is mounted on the output shaft (3b) and is chain-driven through a chain (3i) and a guide wheel (3f) installed between the passive sprocket Ⅱ (3d.2) and the active sprocket Ⅱ (3c.2) and a driving sprocket Ⅱ (3c.2). Here, the chain (3i) is open, one end is fixed on the guide wheel (3f), and the other end is fixed on the active sprocket Ⅱ (3c.2). The middle part is in a "W" shape by passing through the passive sprocket Ⅱ (3d.2). The ratchet Ⅱ (3e.2) is installed on the right side of the passive sprocket Ⅱ (3d.2) and cooperates with the ratchet (3e). The passive tensioning wheel (3g) and the guide wheel (3f) are coaxially fixed and assembled. The chain (3i) and the active tensioning wheel (3h) are chain-driven. Here, the chain (3i) is closed, and the path passing through the active tensioning wheel (3h) and the passive tensioning wheel (3g) is in an "O" shape.

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