A detachable electronic throttle valve for a large-bore marine engine

Abstract

The application discloses a detachable electronic throttle valve for a large-bore ship engine and relates to the field of throttle valves.The detachable electronic throttle valve comprises a throttle valve mechanism and a power driving mechanism, the throttle valve mechanism and the power driving mechanism are connected through a connecting block by bolts, and the throttle valve mechanism and the power driving mechanism are connected together through the connecting block.The electronic throttle valve has a smaller axial size and a more balanced structure through reasonable optimization of the throttle valve structure, and less vibration is brought;the redundant design of the indicating mechanical pointer and the position sensing device increases the safety and convenience of the throttle valve;and the modular design makes the installation, dismounting and maintenance of the electronic throttle valve more convenient.

Description

Technical Field

[0001] This invention relates to the field of throttle valves, and more particularly to a detachable electronic throttle valve for large-bore marine engines. Background Technology

[0002] In engine control, the electronic control unit (ECU) calculates and adjusts the throttle opening mounted on the intake manifold by combining throttle position and real-time parameters from key sensors, thereby regulating engine power. Given the known high correlation between engine output power and intake air volume per cycle, the quality of the electronic throttle significantly impacts engine performance.

[0003] In the control of large engines, the requirements for intake air volume control are much more stringent. Ordinary electronic throttle bodies have room for further optimization in terms of structural design and control methods. This is especially true because ordinary electronic throttle bodies generally use brushed motors, which have the drawback of being non-removable. Furthermore, there are high requirements for the reliability and durability of the throttle body, which ordinary electronic throttle bodies cannot meet. In addition, existing large engines generally use large-size servo motors without reducers, which are heavy and inconvenient to install.

[0004] Therefore, those skilled in the art need to solve the technical problems of inconvenient throttle valve installation and removal, low safety, and poor accuracy of intake volume control in the prior art. Summary of the Invention

[0005] The purpose of this invention is to provide a detachable electronic throttle valve for large-bore marine engines, which solves the problems of inconvenient throttle valve installation and removal, low safety, and poor accuracy of intake volume control.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] The present invention discloses a detachable electronic throttle valve for a large-bore marine engine, comprising a throttle valve mechanism and a power drive mechanism, wherein the throttle valve mechanism and the power drive mechanism are connected together by a connecting block via bolts.

[0008] Preferably, the throttle mechanism includes a throttle body, a throttle valve plate, a rotating shaft, a left throttle cover plate, and a limiting block. The side end face of the throttle body is provided with a horizontal through hole, and the center of the throttle body is provided with a central through hole. The two side through holes are concentrically assembled with the rotating shaft.

[0009] The rotating shaft includes a throttle mechanism embedded section and a power mechanism through section. The throttle mechanism embedded section is rotatably connected inside the throttle housing via a needle roller bearing. The needle roller bearing and the rotating shaft are interference-fitted. The outer circle of the needle roller bearing is connected to the side through hole. A limit block and a left throttle cover plate are sequentially connected to the end of the throttle mechanism embedded section. After the left throttle cover plate is embedded in the side through hole, the flange face of the left throttle cover plate is fixedly positioned by screws. The throttle valve plate passes through the central positioning hole of the throttle mechanism embedded section and is positioned and connected by screws.

[0010] Preferably, the outer diameter of the throttle valve plate matches the size of the central through hole, and the rotating shaft drives the throttle valve plate to rotate synchronously.

[0011] Preferably, the tops of the limiting block and the throttle mechanism embedding section are respectively configured with matching mortise and tenon structures, and the tops of the limiting block and the throttle mechanism embedding section are connected by the mortise and tenon structures.

[0012] Preferably, a position indicator and scale are provided on the outer surface of the left throttle cover plate, and the rotation shaft of the position indicator is connected to the end face of the throttle mechanism embedded section by a thread.

[0013] Preferably, the power drive mechanism includes a motor, a reducer, and a right cover plate. The motor is located on top of the reducer, and the output shaft of the motor and the input end of the reducer are connected by a key. The right cover plate is connected to the right end of the reducer by screws. The power mechanism through section of the rotating shaft passes through the connecting block and is connected to the output shaft of the reducer.

[0014] Preferably, a fastening nut is threaded to the end of the through section of the power mechanism of the rotating shaft, and a copper sleeve is connected between the fastening nut and the rotating shaft. A magnetic block is embedded inside the copper sleeve. An induction circuit board is connected to the left end face of the right cover plate by screws. The induction circuit board and the magnetic block are electromagnetically induced. An aviation plug is connected to the top of the right cover plate. The aviation plug and the induction circuit board are electrically connected. The induction circuit board monitors the position of the throttle valve plate through the magnetic block and feeds back to the controller through the aviation plug.

[0015] Preferably, the limiting block is Q-shaped, and a concave step is provided on the side ring surface of the throttle body, and the concave step is located at the top of the side through hole. Two limiting screws are installed on the concave step, and the limiting screws cooperate with the limiting block.

[0016] Preferably, the motor is a brushless DC motor, the reducer is a right-angle planetary reducer, and the power input direction and power output direction of the reducer are perpendicular.

[0017] Preferably, the left and right ends of the outer wall of the throttle body are set as vertical surfaces, the upper and lower ends of the outer wall of the throttle body are set as horizontal surfaces, and threaded holes for conversion are evenly distributed on the front and rear end faces of the throttle body.

[0018] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0019] This invention discloses a detachable electronic throttle valve for large-bore marine engines. By rationally optimizing the throttle valve structure, the axial dimension of the electronic throttle valve is reduced, the structure is more balanced, and vibration is reduced. The redundant design of the mechanical position indicator and position sensing device increases the safety and convenience of the throttle valve. At the same time, the modular design makes the installation, disassembly, and maintenance of the electronic throttle valve more convenient. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is an exploded schematic diagram of a detachable electronic throttle valve for a large-bore marine engine according to the present invention;

[0022] Figure 2 This is an assembly diagram of the present invention;

[0023] Figure 3 This is the left view of the present invention;

[0024] Figure 4 This is the right view of the present invention.

[0025] Explanation of reference numerals in the attached diagram: 1. Throttle body; 2. Throttle valve plate; 3. Rotating shaft; 4. Needle roller bearing; 5. Limit block; 6. Left cover plate; 7. Limit screw; 71. Maximum position limit screw; 72. Minimum position limit screw; 8. Motor; 9. Reducer; 10. Airplane connector; 11. Right cover plate; 12. Fastening nut; 13. Connecting block; 14. Magnetic block; 15. Induction circuit board; 16. Copper sleeve. Detailed Implementation

[0026] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] like Figure 1-4As shown, a detachable electronic throttle valve for a large-bore marine engine includes a throttle valve mechanism and a power drive mechanism. The throttle valve mechanism and the power drive mechanism are connected together by a connecting block 13 via bolts.

[0028] like Figure 1 As shown, the throttle mechanism includes a throttle body 1, a throttle valve plate 2, a rotating shaft 3, a left throttle cover plate 6, and a limiting block 5. The side end face of the throttle body 1 is provided with a horizontal through hole, and the center of the throttle body 1 is provided with a central through hole. The two side through holes are concentrically assembled with the rotating shaft 3.

[0029] The rotating shaft 3 includes a throttle mechanism embedding section and a power mechanism through section. The throttle mechanism embedding section is rotatably connected to the inside of the throttle housing 1 via a needle roller bearing 4. The needle roller bearing 4 and the rotating shaft 3 are interference-fitted, and the outer circle of the needle roller bearing 4 is connected to the side through hole. The end of the throttle mechanism embedding section is sequentially connected to a limit block 5 and a left throttle cover plate 6. After the left throttle cover plate 6 is embedded in the side through hole, its flange surface is fixedly positioned by screws. The throttle valve plate 2 passes through the central positioning hole of the throttle mechanism embedding section and is positioned and connected by screws. The throttle housing 1, the left cover plate 6, and the connecting block 13 are mechanically connected to form a modular structure, which facilitates the maintenance, disassembly, and installation of the throttle structure.

[0030] The outer diameter of the throttle valve plate 2 matches the size of the central through hole, and the rotating shaft 3 drives the throttle valve plate 2 to rotate synchronously.

[0031] like Figure 1 As shown, the top of the limiting block 5 and the top of the throttle mechanism embedding section are respectively set as matching tenon and mortise structures, and the top of the limiting block 5 and the top of the throttle mechanism embedding section are connected by the tenon and mortise structures.

[0032] A position indicator and scale are provided on the outer surface of the left cover plate 6 of the throttle valve. The rotation shaft of the position indicator is connected to the end face of the embedded section of the throttle valve mechanism through a thread. The position indicator can rotate with the rotation shaft 3 and display the actual rotation position of the throttle valve plate 2 on the left cover plate 6.

[0033] like Figure 1As shown, the power drive mechanism includes a motor 8, a reducer 9, and a right cover plate 11. The motor 8 is located on top of the reducer 9, and the output shaft of the motor 8 and the input end of the reducer 9 are connected by a key. The right cover plate 11 is connected to the right end of the reducer 9 by screws. The power mechanism through section of the rotating shaft 3 passes through the connecting block 13 and is connected to the output shaft of the reducer 9.

[0034] The end of the power mechanism through section of the rotating shaft 3 is threaded with a fastening nut 12. A copper sleeve 16 is connected between the fastening nut 12 and the rotating shaft 3. A magnetic block 14 is embedded inside the copper sleeve 16. An induction circuit board 15 is connected to the left end face of the right cover plate 11 by screws. The induction circuit board 15 and the magnetic block 14 are electromagnetically induced. An aviation plug 10 is connected to the top of the right cover plate 11. The aviation plug 10 is electrically connected to the induction circuit board 15. The induction circuit board 15 monitors the position of the throttle valve plate 2 through the magnetic block 14 and feeds back to the controller through the aviation plug 10.

[0035] Specifically, the copper sleeve 16 is annular, the magnetic block 14 is cylindrical, and the aviation plug 10 is cylindrical; the sensing circuit board 15 and the magnetic block 14 use the principle of electromagnetic induction to measure the position of the throttle valve plate 2 in real time. The signal of the sensing circuit board 15 will be fed back to the controller through the aviation plug 10. At the same time, the controller combines the feedback signal to output a control signal, and the controller controls the rotation angle of the motor 8 through the aviation plug 10.

[0036] like Figure 3 As shown, the limiting block 5 is Q-shaped, and a concave step is provided on the side ring surface of the throttle body 1. The concave step is located at the top of the side through hole, and two limiting screws 7 are installed on the concave step. The limiting screws 7 cooperate with the limiting block 5.

[0037] Specifically, the Q-type limiting block 5, together with the maximum position limiting screw 71 and the minimum position limiting screw 72 installed on the throttle body, constitutes an adjustment mechanism for adjusting the extreme position of the throttle valve plate 2. By adjusting the screwing depth of the left and right limiting screws 7, the rotation angle of the Q-type limiting block 5 can be limited, thereby limiting the extreme angle of rotation of the throttle valve plate 2, achieving the effect of precisely controlling the intake air volume of the throttle.

[0038] The motor 8 is a brushless DC motor that provides torque to the device. The reducer 9 is a right-angle planetary reducer, and the power input direction and power output direction of the reducer 9 are perpendicular. The reducer can be used to change the direction of the motor's output power.

[0039] Specifically, the reducer 9 uses the principle of gear transmission to reduce the high-speed rotation of the motor 8 to the rotation shaft 3 through gear transmission, thereby reducing the speed of the rotation shaft 3 and increasing the output torque.

[0040] The left and right ends of the outer wall of the throttle body 1 are set as vertical surfaces, which facilitates the connection of the left and right side planes with the left cover plate 6 and the connecting block 13 of the device to form a modular structure, which facilitates the maintenance, disassembly and installation of the throttle body structure; the upper and lower ends of the outer wall of the throttle body 1 are set as horizontal surfaces, which is conducive to the stable placement of the device; the front and rear end faces of the throttle body 1 are evenly distributed with threaded holes for conversion, which facilitates the installation and matching of the external intake manifold and throttle body components; the inner wall of the throttle body 1 is a smooth cylindrical curved surface, and the outer wall is approximately a cylindrical curved surface.

[0041] The process of using this invention is as follows:

[0042] First, assemble the throttle body device completely, and then install it together with the engine intake manifold or other components by screwing through the threaded holes on the front and rear end faces of the throttle body 1. During operation, the motor 8 starts and drives the reducer 9 to rotate, which in turn drives the rotating shaft 3 to rotate. The rotation of the rotating shaft 3 drives the throttle valve plate 2 to rotate, thereby controlling the intake air volume. By adjusting the screwing depth of the two limit screws 7 on the left and right, the rotation angle of the Q-type limit block 5 can be limited, thereby limiting the extreme angle of rotation of the throttle valve plate 2, achieving the effect of precisely controlling the intake air volume of the throttle body.

[0043] The position indicator mechanical pointer can rotate with the rotating shaft 3, displaying the actual rotation position of the throttle valve plate 2 on the left cover plate 6. The sensing circuit board 15 and the magnetic block 14 use the principle of electromagnetic induction to measure the position of the throttle valve plate 2 in real time. The signal from the sensing circuit board 15 is fed back to the controller through the aviation connector 10. At the same time, the controller combines the feedback signal to output a control signal, and the controller controls the rotation angle of the motor 8 through the aviation connector 10.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A detachable electronic throttle valve for a large-bore marine engine, characterized in that: It includes a throttle mechanism and a power drive mechanism, and the throttle mechanism and the power drive mechanism are connected by a connecting block (13) by bolts. The throttle mechanism and the power drive mechanism are connected together by the connecting block (13). The throttle mechanism includes a throttle body (1), a throttle valve plate (2), a rotating shaft (3), a left throttle cover plate (6), and a limiting block (5). The side end face of the throttle body (1) is provided with a horizontal through hole, and the center of the throttle body (1) is provided with a central through hole. The two side through holes are concentrically assembled with the rotating shaft (3). The rotating shaft (3) includes a throttle mechanism embedded section and a power mechanism through section. The throttle mechanism embedded section is rotatably connected to the inside of the throttle housing (1) via a needle roller bearing (4). The needle roller bearing (4) and the rotating shaft (3) are interference-fitted. The outer circle of the needle roller bearing (4) is connected to the side through hole. The end of the throttle mechanism embedded section is sequentially connected to a limit block (5) and a left throttle cover plate (6). After the left throttle cover plate (6) is embedded into the side through hole, the flange surface of the left throttle cover plate (6) is fixedly positioned by screws. The throttle valve plate (2) passes through the central positioning hole of the throttle mechanism embedded section and is positioned and connected by screws. The outer surface of the left cover plate (6) of the throttle valve is provided with a position mechanical pointer and a scale, and the rotation shaft of the position mechanical pointer is connected to the end face of the embedded section of the throttle valve mechanism through a thread. The power drive mechanism includes a motor (8), a reducer (9), and a right cover plate (11). The motor (8) is located on top of the reducer (9), and the output shaft of the motor (8) and the input end of the reducer (9) are connected by a key. The right cover plate (11) is connected to the right end of the reducer (9) by screws. The power mechanism through section of the rotating shaft (3) passes through the connecting block (13) and is connected to the output shaft of the reducer (9). The motor (8) is a DC brushless motor, and the reducer (9) is a right-angle planetary reducer. The power input direction and the power output direction of the reducer (9) are perpendicular. The end of the power mechanism through section of the rotating shaft (3) is threaded with a fastening nut (12), and a copper sleeve (16) is connected between the fastening nut (12) and the rotating shaft (3). A magnetic block (14) is embedded inside the copper sleeve (16). A sensing circuit board (15) is connected to the left end face of the right cover plate (11) by screws. The sensing circuit board (15) and the magnetic block (14) are electromagnetically induced. The sensing circuit board (15) monitors the position of the throttle valve plate (2) through the magnetic block (14).

2. The detachable electronic throttle valve for a large-bore marine engine according to claim 1, characterized in that: The outer diameter of the throttle valve plate (2) matches the size of the central through hole, and the rotating shaft (3) drives the throttle valve plate (2) to rotate synchronously.

3. A detachable electronic throttle valve for a large-bore marine engine according to claim 1, characterized in that: The top of the limiting block (5) and the top of the throttle mechanism embedding section are respectively configured with a matching tenon and mortise structure, and the limiting block (5) and the top of the throttle mechanism embedding section are connected by the tenon and mortise structure.

4. A detachable electronic throttle valve for a large-bore marine engine according to claim 1, characterized in that: The top of the right cover plate (11) is connected to a flight plug (10), which is electrically connected to the sensing circuit board (15). The signal of the sensing circuit board (15) is fed back to the controller through the flight plug (10).

5. A detachable electronic throttle valve for a large-bore marine engine according to claim 3, characterized in that: The limiting block (5) is Q-shaped. A concave step is provided on the side ring surface of the throttle body (1), and the concave step is located at the top of the side through hole. Two limiting screws (7) are installed on the concave step, and the limiting screws (7) cooperate with the limiting block (5).

6. A detachable electronic throttle valve for a large-bore marine engine according to claim 1, characterized in that: The left and right ends of the outer wall of the throttle body (1) are set as vertical surfaces, the upper and lower ends of the outer wall of the throttle body (1) are set as horizontal surfaces, and threaded holes for conversion are evenly distributed on the front and rear end faces of the throttle body (1).

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