Motorcycle vertical engine with quick decompression mechanism

Abstract

The present application relates to the technical field of vertical engine, and particularly relates to a motorcycle vertical engine with a quick pressure reducing mechanism, which comprises a base, a sealed shell, an output shaft, a piston rocker, a rotating wheel, a control box and a pressure regulating mechanism, the pressure regulating mechanism is installed at one end of the rotating shaft, a centrifugal control disc in the pressure regulating mechanism rotates under the driving of the rotating shaft, the centrifugal control disc drives a shaft block to rotate coaxially through clamping protrusions, the shaft block is clamped with a supporting frame through a matching block to drive a rotating ring to rotate, a connecting pin on the rotating ring drives a rotating gear to rotate eccentrically, a connecting block connected to the rotating gear drives a lifting rod to move periodically through a hinged block, in the process of starting the engine, a camshaft drives an expansion block in the centrifugal control disc to clamp and drive the shaft block to rotate, so that the rotating ring rotates eccentrically, the lifting rod moves periodically to drive the valve to open, and the pressure in the engine cavity is reduced.

Description

Technical Field

[0001] This invention relates to the field of vertical engine technology, and more specifically to a motorcycle vertical engine with a rapid decompression mechanism. Background Technology

[0002] A motorcycle engine is a machine that ignites the fuel-air mixture entering the cylinder, converting the heat energy generated by combustion into mechanical energy. This mechanical energy is then transmitted through the crankshaft and transmission mechanism to the rear wheel of the motorcycle, thus providing the vehicle's propulsion. Motorcycle engines have advantages such as low inertia, low vibration, and low noise. There are many types of motorcycle engines. Compared to horizontal layouts, vertical engines generally offer more power for the same displacement. Most vertical engines use pushrod mechanisms, resulting in better durability. Their valve train is virtually maintenance-free for its entire lifespan. Furthermore, the vertical layout provides a larger airflow area, allowing for a more efficient design of the oil pump.

[0003] During vehicle start-up, excessively high internal engine pressure not only increases friction between engine components, generating shear forces and heat, but can also cause problems such as lubrication system failure, oil seal leaks, and cylinder seal failure. In extreme cases, the supercharger system may rupture, leading to serious accidents. Therefore, decompression protection during motorcycle start-up is a crucial safety measure.

[0004] Existing motorcycle vertical engines typically use pressure relief valves for pressure reduction protection. These valves operate by using a camshaft-mounted tab and spring. During start-up, they briefly open the exhaust valve to control the high air pressure in the piston's sealed chamber, thus achieving pressure reduction. However, existing pressure relief valves have a relatively simple structure. Although they are inexpensive, the connecting spring is exposed and easily damaged. This can cause debris from a damaged spring to fall into the engine, causing a series of problems. Furthermore, existing pressure relief valves generally need to be replaced after 5000-6000 km, increasing the driver's maintenance and time costs.

[0005] In view of the above, in order to overcome the above technical problems, the present invention designs a motorcycle vertical engine with a rapid decompression mechanism, thus solving the above technical problems. Summary of the Invention

[0006] The technical objective of this invention is to design a pressure regulating mechanism that, during engine startup, drives the camshaft to clamp the telescopic block inside the centrifugal control disc, causing the coupling block to rotate. This causes the rotating ring to rotate eccentrically, resulting in the periodic lifting and lowering of the lifting rod, which in turn opens the valves, thereby achieving pressure reduction within the engine's internal cavity.

[0007] To achieve the above-mentioned technical objectives, the present invention provides the following technical solution:

[0008] This invention provides a motorcycle vertical engine with a rapid decompression mechanism, comprising a base, a sealed housing, an output shaft, a piston rocker, a rotary wheel, and a control box. The sealed housing is mounted on the base, the output shaft is mounted on the side of the sealed housing, the piston rocker is mounted above the sealed housing, the control box is mounted above the piston rocker, and the rotary wheel is mounted on the side of the control box. The rotary wheel and the output shaft are connected by a timing belt or timing chain, allowing the output shaft to drive the rotary wheel to rotate synchronously. The control box includes a rotating shaft, a cam, and a valve control lever. The rotating shaft is mounted on... The control box contains a cam mounted on a rotating shaft to meet the power requirements of a multi-stroke engine. The valve control lever is mounted below the cam. It also includes a pressure regulating mechanism mounted at one end of the rotating shaft. Inside the pressure regulating mechanism, a centrifugal control disc rotates under the drive of the rotating shaft. The centrifugal control disc, through a clamping protrusion, drives a coupling block to rotate coaxially. The coupling block, through a mating block and a support frame, interlocks to drive a rotating ring to rotate. A connecting pin on the rotating ring drives a rotating gear to rotate eccentrically. A connecting block connected to the rotating gear, through a hinge block, drives a lifting rod to perform periodic lifting and lowering movements.

[0009] The pressure regulating mechanism includes a centrifugal control disc, a telescopic block, a coupling block, a fixed plate, a rotating ring, a rotating gear, a connecting block, a hinge block, and a lifting rod. The centrifugal control disc is fixedly installed at one end of the rotating shaft. The telescopic blocks are arranged in a ring array inside the centrifugal control disc. The vertical shape of the telescopic blocks is a fan-shaped ring. By using a fan-shaped ring with an arc of 1 / 2π rad, four fan-shaped telescopic blocks can fit together to form a ring, thereby clamping the coupling block from all directions and ensuring the synchronous movement of the coupling block and the centrifugal control disc. The coupling block is installed in the middle of the telescopic blocks and is one of the core components of the pressure regulating mechanism. The connection of the coupling block allows the rotational torque of the output shaft to be utilized by the rotating ring. Once the coupling block and the telescopic block in the centrifugal control disc are separated under the action of centrifugal force, the rotating ring is no longer under force, meaning it will not work during normal engine operation. This reduces the impact of the pressure regulating mechanism on the engine's conversion efficiency. Compared to existing pressure reducing valves, the pressure regulating mechanism has a lower possibility of interfering with the normal operation of the engine. The fixed plate is installed inside the control box. Mounting screws are installed around the perimeter of the mounting plate. An arc-shaped enclosure is installed on the side of the mounting plate, which limits the lifting rod, ensuring that the other end of the lifting rod can only perform vertical squeezing action on the valve control rod. A passage groove is opened at the bottom of the enclosure. The arc-shaped enclosure provides structural stability and, in the event of long-term non-replacement or accidental damage to the pressure regulating mechanism, the flying debris and small metal pieces generated by the enclosure will be blocked, thus ensuring that the engine continues to operate without being affected. The rotating ring is installed inside the fixed plate, and the rotating gear is eccentrically installed in the middle of the rotating ring. The eccentric installation is used to enable the rotating gear to drive the hinge block and the lifting rod to perform periodic lifting and lowering movements. The connecting block is installed at the axis of the rotating gear. The connecting block is used to balance the torque between the rotating gear and the lifting rod, thereby ensuring stability during rotation and adapting to the high-speed operating conditions of the engine. The hinge block is installed at one end of the connecting block. The hinge block is used to connect the lifting rod and the connecting block and provides a rotation angle function to ensure that the lifting rod moves vertically within the enclosure. The lifting rod is installed at the lower end of the hinge block.

[0010] A partition block is installed on the inner side of the centrifugal control disk. The partition block reduces the deformation of the telescopic block due to the tangential force during its outward rotation under centrifugal force, thereby ensuring the service life of the pressure regulating mechanism. The vertical cross-section of the partition block is an isosceles triangle. The isosceles triangle partition block can evenly distribute the force on both sides of the telescopic block and limit its outward movement path, thereby ensuring that its movement direction is the axial direction of the centrifugal control disk. An installation block is installed between adjacent partition blocks. A limit block is installed on the inward side of the installation block. The vertical cross-section of the limit block is cross-shaped. The cross-shaped limit block not only has accurate positioning and good limiting effect, but also can block the tangential displacement trend of the telescopic block, thereby improving the accuracy of each telescopic block movement.

[0011] Springs are installed on the outer side of the telescopic block. The springs are symmetrically arranged about the bisector of the telescopic block, thereby evenly distributing the centrifugal force of the telescopic block and improving its service life. A limit groove is opened at the midpoint of the line connecting the two springs. Notches are opened at both ends of the telescopic block. The vertical cross-section of the notch is a right triangle, and the right-angled sides of the notches of adjacent telescopic blocks fit together. The notches reduce the contact force between the telescopic block and the partition block, thereby reducing the wear between the telescopic block and the partition block. Multiple clamping protrusions are installed on the inner side of the telescopic block. The clamping protrusions are hemispherical and made of hard rubber. The surface of the hemispherical clamping protrusions can be coated to increase their friction. The clamping protrusions are pressed by springs to make all-round contact with the coupling block. The shape of the hemisphere can further increase the force-bearing area, thereby increasing the force-bearing area of ​​static friction between the clamping protrusions and the coupling block during rotation. The clamping protrusions are arranged in a rectangular array on the inner side of the telescopic block. The rectangular array can evenly distribute the entire area of ​​the side of the coupling block, thereby ensuring the coaxiality of rotation.

[0012] like Figure 7 As shown, the coupling block has a herringbone anti-slip pattern on the side near the centrifugal control disc. A mounting pin is installed at the center of the end face of the other end of the coupling block. Around the mounting pin, there are four mating blocks with vertical cross-sections of fan-shaped rings arranged in a ring array. The angle of each mating block is an acute angle, so that it can be engaged with the support frame to ensure torque distribution under the high-speed rotation of the engine and improve the stability of the mechanism.

[0013] The inner surface of the rotating ring is fitted with a ring of inner teeth, which are fixed to the fixed plate by mounting screws. A support frame is installed inside the rotating ring. Since the rotational speed of the rotating shaft is often high and there are many components in the mating mechanism, conventional pin connections may lead to severe wear and compromise service life. Therefore, the support frame is designed in a cross shape. The shape of the support frame can engage with one side of the coupling block, thereby improving stability during rotation. A mounting ring is set in the middle of the support frame, and a connecting pin is installed at the midpoint of the support frame on one side of the mounting ring.

[0014] The connecting block includes a connecting rod, a counterweight, and a hinge pin. The connecting rod is installed at the center of the rotating gear, and the counterweight is installed on the side of the connecting rod to balance the force and reduce the adverse effects of centrifugal force on wear and motion instability. The hinge pin is installed on the surface of the counterweight, which has a fan-shaped vertical cross-section. The fan-shaped counterweight maximizes the centrifugal force on the counterweight itself, and the density of the counterweight gradually increases from the connecting rod to the hinge pin, further improving the outward centrifugal force on the counterweight and thus enhancing the stability of the rotating gear during rotation. The hinge block has a hinge groove on its surface, which is arc-shaped. This arc-shaped groove can cooperate with the hinge joint. During high-speed rotation, the fit between the hinge groove and the hinge joint is mostly clearance, reducing friction damage and extending service life while improving rotational sensitivity.

[0015] One end of the lifting rod is configured as a hinge joint, and the middle part of the lifting rod is configured as a rod body. The rod body is configured in a Z-shape so that the lifting rod can directly contact the valve control rod, improving the responsiveness and achieving the working requirement of rapid decompression. The other end of the rod body is equipped with a trigger block with a rectangular cross-section, which can periodically control the opening and closing of the valve control rod.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention replaces the existing pressure reducing valve with a pressure regulating mechanism, which solves the problems of frequent replacement of the pressure reducing valve, short maintenance cycle, and easy damage to the engine by flying debris when it is damaged. The pressure regulating mechanism is driven by static friction, which reduces wear and has less impact on the engine interior.

[0018] 2. This invention, through the design of a centrifugal control disc and a telescopic block, enables the pressure regulating mechanism to quickly depressurize the internal cavity of the engine by clamping the telescopic block inside the centrifugal control disc and rotating the coupling block during the initial engine start-up process via the camshaft. When the engine is running normally, the pressure regulating mechanism disengages from the coupling block through centrifugal force, thus not affecting the engine's working efficiency.

[0019] 3. The application sets the rotating ring and rotating gear, the eccentric rotating gear drives the lifting rod to move under the limiting action of the coaming, so that the lifting rod moves periodically up and down, thereby controlling the valve control rod to open to quickly reduce the high pressure in the cylinder to ensure rapid start. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0021] The above and other aspects of the present application will now be described, by way of example only, with reference to the accompanying drawings in which:

[0022] Figure 1 is a schematic diagram of the overall structure of the present application;

[0023] Figure 2 is a schematic diagram of the internal structure of the present application;

[0024] Figure 3 is a schematic diagram of the installation position of the control box and pressure regulating mechanism of the present application;

[0025] Figure 4 is a schematic diagram of the pressure regulating mechanism structure of the present application;

[0026] Figure 5 is a schematic diagram of the fixed plate structure of the present application;

[0027] Figure 6 is a schematic diagram of the centrifugal control disc structure of the present application;

[0028] Figure 7 is a schematic diagram of the telescopic block cross-section structure of the present application;

[0029] Figure 8 is a schematic diagram of the shaft coupling block structure of the present application;

[0030] Figure 9 is a schematic diagram of the rotating ring, rotating gear and connecting block structure of the present application;

[0031] Figure 10 is a cross-sectional view of the hinged block and lifting rod of the present application;

[0032] Figure 11 is a schematic diagram of the lifting rod structure of the present application;

[0033] Figure 12 is a schematic diagram of the overall cross-section of the present application.

[0034] In the figure: 1, base; 2, sealed housing; 3, output shaft; 4, piston rocker; 5, rotating wheel; 6, control box; 61, rotating shaft; 62, cam; 63, valve control rod; 7, pressure regulating mechanism; 71, centrifugal control disc; 711, partition block; 712, mounting block; 713, limiting block; 72, telescopic block; 721, spring; 722, limiting sliding slot; 723, notch; 724, clamping protrusion; 73, shaft coupling block; 731, anti-skid pattern; 732, matching block; 733, mounting pin; 74, fixed plate; 741, mounting screw; 742, coaming; 743, through sliding slot; 75, rotating ring; 751, inner ring tooth; 752, support frame; 753, mounting ring; 754, connecting pin; 76, rotating gear; 77, connecting block; 771, connecting rod; 772, counterweight block; 773, hinged pin; 78, hinged block; 781, hinged recess; 79, lifting rod; 791, hinged head; 792, rod body; 793, trigger block. DETAILED DESCRIPTION

[0035] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the drawings and specific embodiments of the specification.

[0036] As Figures 1 to 12As shown, a motorcycle vertical engine with a quick decompression mechanism, including base 1, sealed housing 2, output shaft 3, piston rocker 4, rotating wheel 5 and control box 6; the base 1 is installed with sealed housing 2, the output shaft 3 is installed on the side of the sealed housing 2, the output shaft 3 is used to release the kinetic energy of the engine through the chemical energy of gasoline to drive the motorcycle to move, the piston rocker 4 is installed above the sealed housing 2, the piston rocker 4 is used to protect and cool the engine, the control box 6 is installed above the piston rocker 4, the control box 6 is used to install rotating shaft 61 and cam 62 to control valve control rod 63 to realize the control of valve switch, the rotating wheel 5 is installed on the side of the control box 6, the rotating wheel 5 is used to realize the rotation of the rotating shaft 61 under the driving of the output shaft 3, the rotating wheel 5 and the output shaft 3 are connected through timing belt or timing chain, so that the output shaft 3 can drive the rotating wheel 5 to rotate synchronously, the control box 6 includes rotating shaft 61, cam 62 and valve control rod 63, the rotating shaft 61 is installed inside the control box 6, the rotating shaft 61 is used to drive the cam 62 to rotate to extrude the valve control rod 63 to realize the control of the valve, so as to realize the working requirement of multi-stroke engine, the cam 62 is installed on the rotating shaft 61, the valve control rod 63 is installed below the cam 62; further comprising pressure regulating mechanism 7, the pressure regulating mechanism 7 is installed at one end of the rotating shaft 61, the centrifugal control disc 71 inside the pressure regulating mechanism 7 rotates under the driving of the rotating shaft 61, the centrifugal control disc 71 drives the shaft block 73 to rotate coaxially through the clamping protrusion 724, the shaft block 73 is clamped with each other through the matching block 732 and the support frame 752 to drive the rotating ring 75 to rotate, the connecting pin 754 on the rotating ring 75 drives the eccentric rotating gear 76 to rotate, the connecting block 77 connected on the rotating gear 76 drives the lifting rod 79 to move periodically through the hinge block 78.

[0037] As Figure 4 and Figure 5As shown, the pressure regulating mechanism 7 comprises a centrifugal control disc 71, an expansion block 72, a shaft block 73, a fixed plate 74, a rotating ring 75, a rotating gear 76, a connecting block 77, a hinged block 78 and a lifting rod 79; the centrifugal control disc 71 is fixedly installed at one end of the rotating shaft 61, and is used to rotate under the driving of the rotating shaft 61; the expansion block 72 is annularly installed inside the centrifugal control disc 71, and is used to extrude the shaft block 73 to make it rotate coaxially with the centrifugal control disc 71; the vertical shape of the expansion block 72 is a fan ring, and the radian of the fan ring is 1 / 2π rad; four fan ring-shaped expansion blocks 72 can be mutually adhered to form a ring-shaped whole, thereby clamping the shaft block 73 in all directions, ensuring the motion synchronization of the shaft block 73 and the centrifugal control disc 71; the shaft block 73 is installed in the middle of the expansion block 72, and is one of the core components of the pressure regulating mechanism 7; the connection of the shaft block 73 makes the rotating torque of the output shaft 3 available to the rotating ring 75, and once the shaft block 73 and the expansion block 72 in the centrifugal control disc 71 are separated under the action of centrifugal force, the rotating ring 75 is no longer stressed, that is, it will not work in the normal process of the engine, thereby reducing the influence of the pressure regulating mechanism 7 on the conversion efficiency of the engine; compared with the pressure reducing valve in the prior art, the pressure regulating mechanism 7 has a lower possibility of interfering with the normal work of the engine.The fixed plate 74 is installed inside the control box 6, the fixed plate 74 is used for installing the rotating ring 75 and other components, the fixed plate 74 is installed with mounting screws 741 around, the mounting screws 741 are used for fixing the arc-shaped surrounding plate 742, the side of the mounting plate is installed with the arc-shaped surrounding plate 742, the surrounding plate 742 is provided with a through hole for installing and limiting the lifting rod 79, so as to ensure that the other end of the lifting rod 79 can only perform a vertical extrusion action on the valve control rod 63, the lower part of the surrounding plate 742 is provided with a sliding groove 743, on the one hand, the arc-shaped surrounding plate 742 has a relatively stable structure, and on the other hand, when the pressure regulating mechanism 7 is not replaced for a long time or is accidentally damaged, the flying debris and small metal blocks generated thereby can be blocked by the surrounding plate 742, so as to ensure that the engine continues to work without being affected, the rotating ring 75 is installed inside the fixed plate 74, the rotating ring 75 is used to drive the eccentric rotating gear 76 to rotate eccentrically, so that the lifting rod 79 performs periodic lifting motion, the eccentric rotating gear 76 is eccentrically installed in the middle of the rotating ring 75, the eccentric installation is used to realize that the rotating gear 76 drives the articulated block 78 and the lifting rod 79 to perform periodic lifting motion, the connecting block 77 is installed at the shaft center of the rotating gear 76, the connecting block 77 is used to balance the moment of force between the rotating gear 76 and the lifting rod 79, so as to ensure the stability during rotation, so as to adapt to the high-speed working condition of the engine, the articulated block 78 is installed at one end of the connecting block 77, the articulated block 78 is used to connect the lifting rod 79 and the connecting block 77, and provide a rotating angle function, so as to ensure the vertical motion of the lifting rod 79 in the surrounding plate 742, the lifting rod 79 is installed at the lower end of the articulated block 78, the lifting rod 79 is used for periodic up-down motion, so as to impact the valve control rod 63 to perform rapid pressure reduction.

[0038] The fixed plate 74 is fixed inside the control box 6, the mounting screws 741 are fixed with the inner ring teeth 751 and the surrounding plate 742, the rotating shaft 61 drives the centrifugal control disc 71 to rotate under the driving of the rotating wheel 5, the shaft connecting block 73 rotates under the action of static friction, and drives the support frame 752 to rotate.

[0039] As Figure 6As shown, the inner side of the centrifugal control disc 71 is provided with a partition block 711, which is used to separate and limit the movement of the telescopic block 72 to the outer side of the centrifugal control disc 71 when the telescopic block 72 is subjected to centrifugal force, so as to reduce the tangential force of the telescopic block 72 during the rotation to the outside under the centrifugal force, thereby reducing the deformation of the telescopic block 72 and ensuring the service life of the pressure regulating mechanism 7. The vertical sectional shape of the partition block 711 is an isosceles triangle. The partition block 711 provided in the isosceles triangle shape can uniformly distribute the stress on both sides of the telescopic block 72 and limit the path of the outward movement, so as to ensure that the movement direction is the axis direction of the centrifugal control disc 71. The adjacent partition blocks 711 are provided with a mounting block 712 in the middle. The inner side of the mounting block 712 is provided with a limiting block 713, which is used to further limit the movement process of the telescopic block 72. The vertical sectional shape of the limiting block 713 is a cross shape. The cross-shaped limiting block 713 not only has accurate positioning and good limiting effect, but also can block the tangential displacement trend of the telescopic block 72, thereby improving the accuracy of each movement of the telescopic block 72.

[0040] When the centrifugal force acting on the telescopic block 72 increases and is sufficient to overcome the elastic force of the spring 721 to move outward, the limiting sliding groove 722 provided on the telescopic block 72 and the limiting block 713 mounted on the mounting block 712 cooperate with each other, so that the telescopic block 72 reduces the influence of the tangential force and slides outward in the axial direction.

[0041] As Figure 7As shown, the outer side of the telescopic block 72 is provided with a spring 721 for supporting the telescopic block 72 so that it can clamp the shaft block 73, the spring 721 is symmetrically arranged about the bisector of the telescopic block 72, thereby uniformly distributing the centrifugal force of the telescopic block 72, improving the service life of the telescopic block 72, the midpoint of the line connecting the two springs 721 is provided with a limiting sliding groove 722, the two ends of the telescopic block 72 are provided with notches 723, the vertical section shape of the notch 723 is a right triangle, and the right angle edges of the notches 723 of adjacent telescopic blocks 72 are fitted, the notches 723 are provided to reduce the contact stress between the telescopic block 72 and the partition block 711, thereby reducing the wear between the telescopic block 72 and the partition block 711. The inner side of the telescopic block 72 is provided with a plurality of clamping protrusions 724, the clamping protrusions 724 are provided as hemispheres, the clamping protrusions 724 of the hemispheres are made of hard rubber, and the surface can be coated to increase the friction, the clamping protrusions 724 are pressed against the telescopic block 72 by the spring 721 to contact the shaft block 73 in all directions, the shape of the hemisphere can further improve the stress area, thereby improving the stress area of the static friction between the clamping protrusions 724 and the shaft block 73 during rotation, the clamping protrusions 724 are arranged in a rectangular array on the inner side of the telescopic block 72, the rectangular array can evenly distribute the entire area of the side of the shaft block 73, thereby ensuring the coaxiality of rotation.

[0042] As shown in Figure 8 The shaft block 73 is provided with a herringbone anti-skid pattern 731 on the side close to the centrifugal control disc 71, the herringbone anti-skid pattern 731 is used to cooperate with the clamping protrusions 724 to further improve the rotation coaxiality and stability, the mounting pin 733 is arranged at the center of the end face of the other end of the shaft block 73, the mounting pin 733 is used to be fixed on the rotating ring 75 to drive it to rotate coaxially, the four matching blocks 732 with fan-shaped vertical sections are arranged in an annular array around the mounting pin 733, the angle of each matching block 732 is acute, thereby being capable of being clamped with the supporting frame 752 to ensure the moment distribution and improve the stability of the mechanism under the high-speed rotation of the engine.

[0043] When the sealing shell 2 is started, the rotating speed of the rotating shaft 61 is low, the elastic force of the spring 721 is large, the centrifugal force cannot overcome the elastic force of the spring 721 to do work, the telescopic block 72 is pressed inward to the shaft block 73 under the elastic force of the spring 721, the anti-skid pattern 731 on the shaft block 73 cooperates with the clamping protrusions 724 to drive the shaft block 73 to rotate under the action of static friction.

[0044] As shown in Figure 9As shown, the inner surface of the rotating ring 75 is mounted with a ring of inner ring teeth 751, which is fixedly installed on the fixed plate 74 by the mounting screw 741, and is used to engage with the rotating gear 76 to make it eccentrically rotate in the rotating ring 75. The inside of the rotating ring 75 is installed with a support frame 752, which is used to rotate under the driving of the shaft block 73. Since the rotating speed of the rotating shaft 61 is often fast, and the components of the matching mechanism are more, the wear may be serious through the conventional pin connection, and the service life cannot be guaranteed. Therefore, the support frame 752 is set to be cross-shaped, and the shape of the support frame 752 can be mutually clamped and engaged with one side of the shaft block 73, so as to improve the stability during rotation. The middle of the support frame 752 is provided with a mounting ring 753, which is used to rotate with the mounting pin 733. The midpoint of the support frame 752 on one side of the mounting ring 753 is provided with a connecting pin 754, which is used to install and limit the rotating gear 76.

[0045] The other end of the shaft block 73 is clamped and fixed through the matching block 732 and the support frame 752 in the rotating ring 75, and the mounting pin 733 is fixed in the mounting ring 753; so that the support frame 752 and the shaft block 73 can rotate at the same time.

[0046] As shown in Figure 9 and Figure 10 , the connecting block 77 includes a connecting rod 771, a counterweight block 772 and a hinge pin 773; the connecting rod 771 is installed at the center of the rotating gear 76, the counterweight block 772 is installed on the side surface of the connecting rod 771, and the counterweight block 772 is used to balance the stress condition during the rotation of the connecting block 77, so as to reduce the bad effects such as wear and motion instability caused by centrifugal force. The hinge pin 773 is installed on the surface of the counterweight block 772. The vertical cross-sectional shape of the counterweight block 772 is fan-shaped. The fan-shaped counterweight block 772 can maximize the centrifugal force stress condition of the counterweight block 772 itself, and the density of the counterweight block 772 gradually increases from the connecting rod 771 to the hinge pin 773. This further improves the outward stress condition of the centrifugal force of the counterweight block 772, thereby improving the stability during the rotation of the rotating gear 76. The upper surface of the hinge block 78 is provided with a hinge recess 781, which is arc-shaped. The arc-shaped hinge recess 781 can be mutually matched with the hinge head 791. In the case of high-speed rotation, most of the gap between the hinge recess 781 and the hinge head 791 is matched, so as to reduce the damage between the two caused by friction, prolong the service life, and improve the rotation sensitivity.

[0047] The support frame 752 of the rotating ring 75 drives the rotating gear 76 to eccentrically rotate, the connecting block 77 is driven by the rotating gear 76 to eccentrically rotate through the connecting rod 771, and the counterweight block 772 is responsible for balancing the motion stability of the entire rotating gear 76.

[0048] As Figure 10 And Figure 11 As shown in the drawings, one end of the lifting rod 79 is provided as a hinge joint 791, and the middle part of the lifting rod 79 is provided as a rod body 792, the rod body 792 is provided as a U-shaped, the U-shaped rod body 792 is used to directly contact the valve control rod 63 while not damaging the existing engine structure, improve the response sensitivity, and achieve the working requirements of rapid pressure reduction, the other end of the rod body 792 is provided with a rectangular trigger block 793, and the rectangular trigger block 793 can periodically open and close the valve control rod 63.

[0049] In the working process of the present application, the sealing shell 2 is started by the starting machine to rotate the engine, so as to complete the intake and compression strokes. The exhaust valve is closed, the working stroke is completed, the sealing shell 2 is started, the sealing shell 2 drives the output shaft 3 to rotate, and the output shaft 3 and the runner 5 are connected by the timing belt in the prior art, so that the rotating shaft 3 can drive the runner 5 to rotate, the runner 5 drives the rotating shaft 61 and the cam 62 installed thereon to rotate at the same time, so as to realize the extension and contraction of the valve control rod 63; During this period, the pressure in the cylinder is large, which is not conducive to the work of the engine, so the pressure regulating mechanism 7 works:

[0050] The fixed plate 74 is fixed in the control box 6, the mounting screw 741 is fixed with the surrounding plate 742 and the inner ring tooth 751, the rotating shaft 61 drives the centrifugal control disc 71 to rotate under the driving of the runner 5, at this time the rotating speed of the rotating shaft 61 is low, the elastic force of the spring 721 is large, the centrifugal force cannot overcome the elastic force of the spring 721 to work, the extension block 72 is extruded inward under the elastic force of the spring 721, the anti-skid pattern 731 on the shaft block 73 and the clamping protrusion 724 cooperate, and the shaft block 73 is driven to rotate under the action of static friction.

[0051] The other end of the joint block 73 is clamped and fixed through the matching block 732 and the support frame 752 in the rotating ring 75, the mounting pin 733 is fixed in the mounting ring 753; so that the support frame 751 and the joint block 73 can rotate simultaneously, the rotating gear 76 is installed on the connecting pin 754, the rotating ring 75 drives the rotating gear 76 to eccentric rotate through the connecting pin 754, the inner ring tooth 751 keeps meshing with the rotating gear 76 in the eccentric rotating process of the rotating gear 76, so as to limit the rotating gear 76 and improve the motion stability, the connecting block 77 is driven to eccentric rotate by the rotating gear 76 through the connecting rod 771, the counterweight block 772 is responsible for balancing the motion stability of the entire rotating gear 76, the hinge recess 781 opened at the hinge pin 773 is installed with the hinge joint 791 of the lifting rod 79, one end of the rod body 792 is limited by the enclosing plate 742 to only move vertically up and down, the middle part of the rod body 792 slides in the chute 743, the trigger block 793 installed at the other end of the rod body 792 will periodically press down the valve control rod 63, so as to open the exhaust valve to quickly reduce the pressure, which can reduce the starting resistance and facilitate the start of the sealing shell 2.

[0052] When the rotating speed of the sealing shell 2 is improved, the centrifugal force of the telescopic block 72 is increased, which is enough to overcome the elastic force of the spring 721 to move outward, the limiting sliding groove 722 opened on the telescopic block 72 and the limiting block 713 installed on the mounting block 712 cooperate with each other, so that the telescopic block 72 reduces the influence of the tangential force and slides outward in the axial direction; the notches 723 on both sides of the telescopic block 72 are separated by the partition block 711, so that the path during sliding is fixed, the wear is reduced, and the service life of the telescopic block 72 is prolonged.

[0053] The technical features disclosed above are not limited to the combinations disclosed with other features, and those skilled in the art can also make other combinations between technical features according to the purpose of disclosure, and the purpose of the present disclosure is achieved.

Claims

1. A motorcycle vertical engine with a rapid decompression mechanism, comprising a base (1), a sealed housing (2), an output shaft (3), a piston rocker (4), a rotary wheel (5), and a control box (6); the sealed housing (2) is mounted on the base (1), the output shaft (3) is mounted on the side of the sealed housing (2), the piston rocker (4) is mounted above the sealed housing (2), the control box (6) is mounted above the piston rocker (4), the rotary wheel (5) is mounted on the side of the control box (6), the control box (6) includes a rotating shaft (61), a cam (62), and a valve control lever (63), the rotating shaft (61) is mounted inside the control box (6), the cam (62) is mounted on the rotating shaft (61), and the valve control lever (63) is mounted below the cam (62); characterized in that, It also includes a pressure regulating mechanism (7), which is installed at one end of the rotating shaft (61). The centrifugal control disk (71) inside the pressure regulating mechanism (7) rotates under the drive of the rotating shaft (61). The centrifugal control disk (71) drives the coupling block (73) to rotate coaxially through the clamping protrusion (724). The coupling block (73) is engaged with the support frame (752) through the mating block (732) to drive the rotating ring (75) to rotate. The connecting pin (754) on the rotating ring (75) drives the rotating gear (76) to rotate eccentrically. The connecting block (77) connected to the rotating gear (76) drives the lifting rod (79) to perform periodic lifting and lowering movements through the hinge block (78).

2. A motorcycle vertical engine with a rapid decompression mechanism according to claim 1, characterized in that: The pressure regulating mechanism (7) includes a centrifugal control disc (71), a telescopic block (72), a coupling block (73), a fixing plate (74), a rotating ring (75), a rotating gear (76), a connecting block (77), a hinge block (78), and a lifting rod (79); the centrifugal control disc (71) is installed at one end of the rotating shaft (61), the telescopic blocks (72) are arranged in a ring array inside the centrifugal control disc (71), the vertical cross-sectional shape of the telescopic blocks (72) is a fan-shaped ring, the arc of the fan-shaped ring is 1 / 2π rad, the coupling block (73) is installed in the middle of the telescopic blocks (72), and the fixing plate (74) is... 4) Installed inside the control box (6), mounting screws (741) are installed around the fixing plate (74), and an arc-shaped enclosure (742) is installed on the side of the mounting plate. A through groove (743) is opened below the enclosure (742). The rotating ring (75) is installed inside the fixing plate (74). The rotating gear (76) is eccentrically installed in the middle of the rotating ring (75). The connecting block (77) is installed at the axis of the rotating gear (76). The hinge block (78) is installed at one end of the connecting block (77). The lifting rod (79) is installed at the lower end of the hinge block (78).

3. A motorcycle vertical engine with a rapid decompression mechanism according to claim 2, characterized in that: The centrifugal control disk (71) has a partition block (711) installed on its inner side. The vertical cross-sectional shape of the partition block (711) is an isosceles triangle. An installation block (712) is installed between adjacent partition blocks (711). A limit block (713) is installed on the inward side of the installation block (712). The vertical cross-sectional shape of the limit block (713) is a cross.

4. A motorcycle vertical engine with a rapid decompression mechanism according to claim 2, characterized in that: Springs (721) are installed on the outer side of the telescopic block (72). The springs (721) are symmetrically arranged about the bisector of the telescopic block (72). A limit groove (722) is opened at the midpoint of the line connecting the two springs (721). Notches (723) are opened at both ends of the telescopic block (72). The vertical cross-section of the notch (723) is a right triangle, and the right-angled sides of the notches (723) of adjacent telescopic blocks (72) fit together.

5. A motorcycle vertical engine with a rapid decompression mechanism according to claim 3, characterized in that: The inner side of the telescopic block (72) is equipped with a plurality of clamping protrusions (724), which are configured as hemispherical and arranged in a rectangular array on the inner side of the telescopic block (72).

6. A motorcycle vertical engine with a rapid decompression mechanism according to claim 2, characterized in that: The coupling block (73) has a herringbone anti-slip pattern (731) on the side near the centrifugal control disk (71). A mounting pin (733) is installed at the center of the end face of the other end of the coupling block (73). Four mating blocks (732) with a vertical cross section of fan-shaped ring are arranged in a ring around the mounting pin (733).

7. A motorcycle vertical engine with a rapid decompression mechanism according to claim 2, characterized in that: The inner surface of the rotating ring (75) is equipped with an inner ring tooth (751), and a support frame (752) is installed inside the rotating ring (75). The support frame (752) is cross-shaped, and an installation ring (753) is provided in the middle of the support frame (752). A connecting pin (754) is installed at the midpoint of the support frame (752) on one side of the installation ring (753).

8. A motorcycle vertical engine with a rapid decompression mechanism according to claim 2, characterized in that: The connecting block (77) includes a connecting rod (771), a counterweight (772), and a hinge pin (773); the connecting rod (771) is installed at the center of the rotating gear (76), the counterweight (772) is installed on the side of the connecting rod (771), and the hinge pin (773) is installed on the surface of the counterweight (772). The vertical cross-sectional shape of the counterweight (772) is fan-shaped, and the density of the counterweight (772) gradually increases from the connecting rod (771) to the hinge pin (773).

9. A motorcycle vertical engine with a rapid decompression mechanism according to claim 2, characterized in that: The hinge block (78) has a hinge groove (781) on its upper surface, and the hinge groove (781) is arc-shaped.

10. A motorcycle vertical engine with a rapid decompression mechanism according to claim 2, characterized in that: One end of the lifting rod (79) is configured as a hinge joint (791), the middle part of the lifting rod (79) is configured as a rod body (792), the rod body (792) is configured as a Z-shape, and the other end of the rod body (792) is equipped with a trigger block (793) with a rectangular cross section.

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