CN103032164B - Outer convex inner arbitrary gear difference cam is rolled and is moved transmission internal combustion engine - Google Patents

Abstract

The invention relates to a cam rolling transmission internal combustion engine with a convex internal arbitrary tooth difference, relates to the field of gas power, and belongs to a multi-cylinder internal combustion engine. The invention provides a new type of internal combustion engine. Eight cylinders are symmetrically and evenly distributed around the outer convex inner multi-phase inner cam, so that the resultant force on the outer convex inner multi-phase inner cam is zero, and the cylinder piston directly acts on the outer convex inner multi-phase inner cam through the push rod. On the inner cam, the power is transmitted from the outer convex inner multi-phase inner cam to the output shaft keyed to the center wheel through the rolling movable tooth transmission of the inner cam with any tooth difference. The internal combustion engine saves the connecting rod and crankshaft in the traditional internal combustion engine, and its external convex internal multi-phase internal cam rolling transmission mechanism has no eccentric mass, has the characteristics of inertial force and self-balancing working load, and the output shaft speed depends on the movable tooth transmission. Transmission ratio, when the movable rack is fixed, the center wheel outputs high torque at low speed, which can be widely used in construction machinery, military and other fields that require high power, such as excavators, armored vehicles, etc. The internal combustion engine has simple and compact structure, small axial dimension, self-balanced force, and stable operation.

Description

Cam rolling transmission internal combustion engine with external convex internal arbitrary tooth difference

technical field

The invention relates to the field of gas power, and more specifically relates to an internal combustion engine with a cam rolling transmission with an outer convex inner arbitrary tooth difference.

Background technique

The most commonly used internal combustion engine at present is a four-stroke crankshaft connecting rod type internal combustion engine. The transmission structure of this internal combustion engine all adopts a crank connecting rod mechanism, and the crankshaft is driven by the connecting rod, thereby converting the linear motion of the piston into the rotary motion of the crankshaft. Because this internal combustion engine drives the crankshaft to rotate by the linear motion of the piston and the planar motion of the connecting rod, there is a large friction between the kinematic pairs, resulting in low transmission efficiency of the internal combustion engine. The crankshaft connecting rod type internal combustion engine also has the following major defects: large volume; large unbalanced centrifugal force on the connecting rod and crankshaft; large impact and large vibration; and thus cause large mechanical wear and shorten the life of the internal combustion engine; complex structure, Processing, manufacturing, assembly, etc. are relatively difficult; in addition, usually the internal combustion engine and the speed change device are two independent machines, and the internal combustion engine needs to be additionally equipped with a reducer for subsequent speed change, resulting in a large volume.

Contents of the invention

The object of the present invention is: in order to overcome the above-mentioned defects existing in the existing crankshaft connecting rod type internal combustion engine, the present invention provides a low-speed diesel engine with simple and compact structure, small volume, small impact vibration, stable operation, high power, long life and high efficiency. Torque four-stroke internal combustion engine-cam roll transmission internal combustion engine with any tooth difference inside and outside convex.

The technical solution adopted by the present invention to solve the technical problem is: a cam roll transmission internal combustion engine with any tooth difference inside the outer convex, mainly composed of the exhaust valve (1), the cylinder head (2), the cylinder (3), the intake valve Door (4), Cylinder (5), Piston (6), Push Rod (7), Spring (8), Roller (9), Output Shaft (10), Multi-phase Internal Cam (11), Rolling movable tooth (12), movable tooth rack (13), center wheel (14) and starting system, air distribution system, cooling system, oil supply system, lubrication system, etc., are characterized in that: Eight cylinders (3) are symmetrically and evenly distributed around the cam (11), and the external convex internal multi-phase internal cam rolling transmission mechanism converts the reciprocating linear motion of the piston into the rotary motion of the output shaft (10)—the cylinder piston (6 ) through the linear reciprocating motion of the push rod (7), the outer convex inner multi-phase inner cam (11) rotates, and the outer convex inner multi-phase inner cam (11) transmits power to the The central theory (14) is the output shaft (10) connected by the key, and the final power is output from the output shaft (10). The externally convex internal multi-phase internal cam (11) organically integrates the internal combustion engine and the internal cam with any tooth difference. As a whole, the internal combustion engine does not need to be equipped with a reducer.

In the above technical solution, the external convex internal multi-phase internal cam rolling transmission mechanism is organically combined with a cam mechanism and an internal cam rolling movable tooth transmission mechanism with any tooth difference. Among them, the cam mechanism is composed of a push rod (7), a roller (9), an outer convex inner multi-phase inner cam (11), a cylinder body (5), and a spring (8). One end of the push rod (7) is connected to the piston ( 6) Fixed connection, the other end is equipped with a roller (9), the contact between the push rod (7) and the convex inner multi-phase inner cam (11) changes from a sliding friction connection to a rolling friction connection due to the roller (9) , one end of the spring (8) is fixed under the piston (6), and the other end is fixed on the boss at the lower part of the cylinder, the spring (8) makes the roller (9) on the push rod always keep in touch with the outer convex inner multi-phase inner cam ( 11) Contact, each cylinder is equipped with piston, push rod with roller and spring.

Arbitrary tooth difference inner cam rolling movable tooth transmission mechanism consists of an outer convex inner multiphase inner cam (11), a rolling movable tooth (12), a movable gear rack (13), a center wheel (14) and an output shaft keyed to it (10) Composition; the outer surface of the convex inner multi-phase inner cam (11) is a four-phase cam profile with four convex parts that are mutually symmetrical at an angle of 90°, and the inside is a multi-phase inner cam, so The outer convex inner multi-phase inner cam (11) is not only the cam in the cam mechanism, but also the multi-phase inner cam in the arbitrary tooth difference inner cam rolling movable tooth transmission mechanism, and the entire arbitrary tooth difference inner cam rolling movable tooth transmission mechanism is built Inside the convex inner multi-phase inner cam (11); the inner outer convex inner multi-phase inner cam (11) is a three-phase inner cam with three mutually symmetrical convex parts at an angle of 120°, Its own mass is perfectly balanced, and its contour curve is a cosine curve.

The rolling movable tooth (12) is composed of a rolling assembly and a moving assembly, wherein the rolling assembly is composed of a sleeve (15) and a needle (16); the moving assembly is composed of a moving pin (17) and a moving block (18). The rolling assembly is restricted on the moving pin (17) by the big end of the moving pin (17) and the moving block (18), and forms a rotating pair with the moving pin (17). The large end of the moving block (18) and the moving pin (17) The end can move in the radial guide groove of the movable gear frame (13) and form a moving pair with the movable gear frame (13); the outer cylindrical surface of the sleeve (15) and the outer convex inner multi-phase inner cam (11) and the center wheel ( 14) Each meshes with each other to form a rolling pair, and the moving block (18) and the moving pin (17) are in clearance fit, so that the large end of the moving pin (17) and the moving block (18) can adapt to the radial guide of the movable rack. slot to avoid jamming.

The cam profile curve of the outer surface of the outer convex inner multi-phase inner cam (11) can be selected according to actual design requirements to obtain the best dynamic performance and improve the energy conversion efficiency of the internal combustion engine. The axes of parts such as the output shaft (10), the convex inner multi-phase inner cam (11), the movable rack (13) and the center wheel (14) overlap and are supported by frame bearings. The difference between the tooth number Z ₁₂ of the rolling movable tooth (12) and the wave number Z ₁₄ of the center wheel (14) is 3, the movable tooth frame (13) is fixedly connected to the frame, and the center wheel (14) is keyed to the output shaft (10) ; The rolling movable tooth (12) meshes with the convex inner multi-phase inner cam (11) and the center wheel (14) respectively to form a high pair, that is, the outer cylindrical surface of the sleeve (15) and the outer convex inner multi-phase inner The cam (11) and the center wheel (14) are meshed respectively to form a rolling pair.

The rotation speed of the output shaft depends on the transmission ratio of the cam rolling movable gear transmission within any tooth difference, and the proper selection of the gear matching scheme of the cam rolling movable tooth transmission within any tooth difference can obtain a larger transmission ratio and realize low speed and high torque output.

In the above technical solution, eight cylinders (3) are arranged symmetrically and evenly in a circular shape around the outer convex inner multi-phase inner cam (11), and any two cylinder pistons (6) arranged symmetrically at a distance of 180° are in synchronous working state, and the working state will be synchronized. The two cylinder pistons with synchronous state are taken as a group, and the four cylinder pistons perform the suction stroke, compression stroke, gas combustion power stroke and exhaust stroke in sequence. The phase difference of cam (11) rotation angle is 45 °. The linear reciprocating motion of the cylinder piston (6) through the push rod (7) makes the outer convex inner multi-phase inner cam (11) rotate, and the outer convex inner multi-phase inner cam transmits the power through the rolling movable tooth transmission of the inner cam with any tooth difference. The output shaft (10) coupled with the center wheel key, the final power is output by the output shaft (10). In any tooth difference inner cam rolling movable tooth transmission, the rolling movable tooth (12) meshes with the center wheel (14) and the convex inner multi-phase inner cam (11) with multiple teeth, so it can realize high power, large transmission of torque.

Compared with prior art, main inventive point of the present invention is.

① The outer part of the convex inner multi-phase inner cam is a four-phase cam with four protruding parts forming an angle of 90° with each other, while the inner part is a multi-phase inner cam, that is, the inner part is a four-phase cam with three mutual angles of 120° and the shaft The three-phase internal cam with the center-symmetrical protruding part has its own mass completely balanced, and its contour curve is a cosine curve. The internal cam rolling movable tooth transmission mechanism with any tooth difference is built into the cam of the cam mechanism, so that the cam mechanism The cam and the multi-phase internal cam in the internal cam rolling movable tooth transmission mechanism with any tooth difference are combined into one, and the external convex internal multi-phase internal cam rolling transmission mechanism is obtained, and the new mechanism is used to replace the existing crankshaft connecting rod type internal combustion engine The crank and connecting rod mechanism introduced the movable tooth transmission technology into the technical field of internal combustion engines, not only completely eliminated the crankshaft and connecting rod, but also combined the internal combustion engine and the speed change device (reducer) into one, and obtained a new type of compact structure and small size. Compared with the crankshaft connecting rod type internal combustion engine, the axial size of the internal combustion engine of the present invention is greatly reduced.

②Eight cylinders are symmetrically and evenly distributed in a circular shape around the outer convex inner multi-phase inner cam. The linear reciprocating motion of the cylinder piston through the push rod makes the outer convex inner multi-phase inner cam rotate, and the outer convex inner multi-phase inner cam transfers the power through any tooth difference. The inner cam rolling movable tooth transmission is transmitted to the output shaft keyed with the center wheel, and finally the power is output by the output shaft.

③Rolling movable tooth is composed of two parts: rolling assembly and moving assembly, in which rolling assembly is composed of sleeve and needle roller; moving assembly is composed of moving pin and moving block. The rolling assembly is limited on the moving pin by the big end of the moving pin and the moving block, and forms a rotating pair with the moving pin. The moving block and the big end of the moving pin can move in the radial guide groove of the movable gear frame and form a movement with the movable gear frame pair; the outer cylindrical surface of the sleeve meshes with the outer convex inner multi-phase inner cam and the center wheel respectively to form a rolling pair, and the moving block and the moving pin have a clearance fit so that the large end of the moving pin and the moving block can be adaptively movable The radial guide groove of the rack not only avoids the jamming phenomenon of the movable rack and the rolling movable teeth, but also reduces the manufacturing precision and reduces the manufacturing cost.

④The power output shaft of the internal combustion engine is the output shaft keyed to the center wheel. The internal cam rolls with any tooth difference and the active gear drives the external convex internal multi-phase internal cam to input power. Transmission ratio, low-speed high-torque output power of the internal combustion engine.

⑤ The rotational speed of the output shaft depends on the transmission ratio of the cam rolling movable gear transmission within any tooth difference, and by properly selecting the gear matching scheme of the cam rolling movable tooth transmission within any tooth difference, a larger transmission ratio can be obtained, and any tooth difference The shock wave of the internal cam rolling movable tooth transmission is a multi-phase internal cam, the difference between the number of teeth Z ₁₂ of the rolling movable tooth and the wave number Z ₁₄ of the center wheel is 3, no eccentric installation is required, and the whole mechanism is self-balanced under force.

⑥In the rolling movable tooth transmission of the internal cam with any tooth difference, the rolling movable tooth meshes with the center wheel and the convex internal multi-phase internal cam with multiple teeth, so high power and high torque transmission can be realized.

⑦In the internal combustion engine, the movable tooth transmission mode with any number of tooth differences is adopted. The tooth profile curve equation of the convex inner multi-phase internal cam and the profile curve of the center wheel are both cosine curves, and the curve equations are simple and consistent, which is conducive to optimal design; The transmission ratio range of the number movable tooth transmission is large, and the rolling movable tooth can be evenly loaded by increasing the number of tooth differences, and the load of a single rolling movable tooth can be reduced.

Compared with the existing reciprocating crankshaft connecting rod type internal combustion engine, the present invention has the following beneficial technical effects.

1. Small impact, small vibration, low noise, stable operation

Since the present invention adopts the rolling transmission mechanism of the external convex internal multiphase internal cam to replace the crank connecting rod mechanism in the existing crankshaft connecting rod type internal combustion engine, the crankshaft and connecting rod, external convex internal multiphase internal cam and arbitrary tooth difference are completely eliminated. The internal cam rolling movable tooth transmission mechanism is all axisymmetric structure, without eccentric mass and unbalanced centrifugal force, which eliminates the inertial force and overturning moment caused by the eccentric mass of the crankshaft and the planar movement of the connecting rod, as well as the resulting impact vibration and noise , eliminating the vibration and noise caused by the piston slapping the cylinder wall caused by the deflection of the connecting rod; eight cylinders are distributed symmetrically and evenly in a circle around the convex and internal multi-phase internal cam, and any two of the cylinders are symmetrically arranged at a distance of 180° in the working state of the piston Synchronization, that is: either inhaling at the same time, or compressing at the same time, or burning gas at the same time to do work, or exhausting at the same time, therefore, the impact force always appears in pairs, which can cancel each other out, so that the resultant force of the external convex internal multi-phase internal cam is Zero, so the impact vibration is small, so the internal combustion engine runs very smoothly.

2. Compact structure, small size, light weight, small axial dimension

Due to the cancellation of the heavy and complicated crankshaft, each cylinder is distributed symmetrically and evenly around the outer convex inner multi-phase inner cam, and the inner cam rolling movable tooth transmission mechanism with any tooth difference is built in the outer convex inner multi-phase inner cam, and the outer convex inner multi-phase inner cam The internal-phase cam is not only the cam in the cam mechanism, but also the multi-phase internal cam in the rolling movable tooth transmission mechanism of the internal cam with arbitrary tooth difference, so the internal combustion engine of the present invention has compact structure, small axial dimension, small volume and light weight; The invention adopts the external convex internal multi-phase internal cam rolling transmission mechanism to output the power generated by the piston, and combines the internal combustion engine and the speed change device (reducer) into one, without additional reduction device, and the structure is greatly reduced, so the structure is compact and small.

3. The transmission ratio is relatively large, and the whole machine is integrated with pre-deceleration

The power output shaft of the internal combustion engine is the output shaft keyed to the center wheel, the internal cam rolls with any tooth difference, and the movable gear drives the external convex internal multi-phase internal cam to input power, the movable gear frame is fixed, and the central wheel outputs, and the gear matching scheme is properly selected , can achieve a larger transmission ratio, and still maintain many advantages such as compact structure, small mass, and small volume. The internal combustion engine can output power at low speed and high torque, which can be widely used in military and engineering machinery and other fields that require high-power mechanical transmission, such as tanks, armored vehicles, excavators, bulldozers, etc.

4. Small friction and wear, self-balancing force, low fuel consumption, high efficiency and long service life

Because the driving force of the piston is directly transmitted to the external convex internal multi-phase internal cam through the push rod roller, and then transmitted to the output shaft output through the rolling movable tooth transmission of the internal cam with any tooth difference. The piston push rod and the convex inner multi-phase inner cam are connected by rolling friction, the transmission efficiency is high, and the crank connecting rod mechanism with serious wear and large friction power consumption is eliminated. The internal cam rolling movable tooth transmission with any tooth difference is multi-teeth meshing, with large bearing capacity and rolling meshing, which makes the transmission efficiency high. Because multiple teeth mesh at the same time, the output rigidity is large, and the transmission is more stable and reliable. At the same time, the convex and internal multi-phase internal cam can realize the multi-phase shock wave and ensure the automatic balance of the force of itself and the internal movable teeth. There is no inertia in the transmission device that requires eccentric installation of the cam in the one-tooth difference movable tooth transmission. Force, exciting force and overturning moment, etc., avoid the vibration excitation of the transmission device from the transmission principle, which is conducive to improving the efficiency of the transmission, and its efficiency value can reach 0.95. The mechanical friction and wear are also small, the fuel consumption is low, and the service life of the internal combustion engine is long.

5. Good economy, power and emission indicators

Since the motion law of the piston depends entirely on the external contour curve of the multi-phase internal cam with convex inside, the cam profile can be designed by selecting the appropriate piston motion law, and the appropriate piston motion law should make the gas in the cylinder burn fully and perfectly. 1. The utilization rate of fuel heat energy is high. Therefore, the internal combustion engine of the present invention has good power, economy and emission indicators, and can achieve the goals of energy saving, environmental protection and machine efficiency.

6. Simple structure, good manufacturability, low production cost

The parts in the internal combustion engine of the invention have simple structure, good manufacturability and low production cost, and the crankshaft and connecting rod which are complex in structure and difficult to manufacture are completely eliminated.

7. Large carrying capacity

The internal cam rolling movable tooth transmission with any tooth difference is multi-teeth meshing, the transmission is stable, and the rolling movable teeth can share the load together to realize power splitting. Therefore, the internal combustion engine runs smoothly, has a strong ability to resist shock and vibration, and has a large carrying capacity.

Description of drawings

The present invention will be further described below in conjunction with drawings and embodiments. However, it should be pointed out that the specific implementation modes of the present invention are not limited to the forms described in the following examples, and those skilled in the art can easily design other specific implementation modes without paying creative efforts. Therefore, the examples of specific implementations given below should not be understood as the protection scope of the present invention, and the protection scope of the present invention is limited to the given examples.

Fig. 1 is a structural schematic diagram of a rolling transmission internal combustion engine with a convex internal arbitrary tooth difference cam.

Fig. 2 is a schematic diagram of an externally convex internal multi-phase internal cam and an internal cam rolling movable tooth transmission mechanism with any tooth difference.

Fig. 3 is a schematic diagram of the structure of the movable rack.

Fig. 4 Front view and left view of rolling movable tooth.

Fig. 5 is a schematic diagram of the assembly relationship between the rolling movable tooth and the movable tooth frame.

The identification objects of the graphic symbols in the above drawings are: 1 exhaust valve; 2 cylinder head; 3 cylinder; 4 intake valve; 5 cylinder block; 6 piston; 7 push rod; 8 spring; 9 roller; 10 output Shaft; 11 external convex internal multi-phase internal cam; 12 rolling movable tooth; 13 movable gear frame; 14 center wheel; 15 sleeve; 16 needle; 17 moving pin;

specific embodiment

As shown in Fig. 1 to Fig. 5, the cam rolling transmission internal combustion engine with any tooth difference between the outer convex and the inner is composed of exhaust valve (1), cylinder head (2), cylinder (3), intake valve (4), cylinder block (5) , piston (6), push rod (7), spring (8), roller (9), output shaft (10), convex inner multi-phase inner cam (11), rolling movable tooth (12), movable tooth Frame (13), center wheel (14) etc. are formed. Eight air cylinders (3) are evenly and symmetrically distributed in a circular shape around the outer convex inner multiphase inner cam (11), and the angle between two adjacent air cylinders is 45°. There is a piston (6) in each cylinder (3), one end of the push rod (7) is solidified with the piston (6), and the other end is equipped with a roller (9), and the push rod (7) is connected with the outer convex inner The multi-phase inner cams (11) change from sliding friction connection to rolling friction connection through rollers (9). One end of the spring (8) is fixed on the bottom of the piston (6), and the other end is fixed on the protrusion at the lower part of the cylinder (3). On the platform, the effect of the spring (8) is to make the roller (9) on the push rod (7) contact with the multi-phase inner cam (11) in the convex interior all the time. The outside of the convex inner multi-phase internal cam (11) is a four-phase cam with four mutually symmetrical convex parts at an angle of 90°, and the inside is a multi-phase internal cam, that is, the inside is a four-phase cam with three mutually forming The three-phase inner cam with the 120° included angle and the axially symmetrical convex part is completely balanced in its own mass, and its contour curve is a cosine curve. The external convex internal multi-phase internal cam (11) organically combines the cam mechanism and the internal cam rolling movable tooth transmission mechanism with any tooth difference. The outer convex inner multi-phase inner cam (11) is not only the cam in the cam mechanism, but also the multi-phase inner cam in the arbitrary tooth difference inner cam rolling movable tooth transmission mechanism, and the entire arbitrary tooth difference inner cam rolling movable tooth transmission mechanism Embedded in the inside of the multi-phase inner cam (11) in the outer convex. The internal cam rolling movable tooth transmission mechanism with any tooth difference is composed of an external convex internal multi-phase internal cam (11), a rolling movable tooth (12), a movable gear rack (13), a center wheel (14) and a center wheel (14) The output shaft (10) of coupling is formed. The movable gear frame (13) is fixedly connected with the frame, the center wheel (14) is keyed to the output shaft (10), and the rolling movable tooth (12) is connected with the outer convex inner multi-phase inner cam (11) and the center wheel (14) Mesh with each other to form a high pair, that is, the outer surface of the sleeve (15) meshes with the convex inner multi-phase inner cam (11) and the center wheel (14) respectively to form a rolling pair, and the sleeve (15) passes through the needle (16) ) is set on the moving pin (17) and is restricted on the moving pin (17) by the big end of the moving pin (17) and the moving block (18) to form a rolling pair with the moving pin (17), and the moving pin (17) The big end and the moving block (18) can simultaneously move in the radial guide groove of the movable rack (12) and form a moving pair with it. The axes of parts such as the output shaft (10), the convex inner multi-phase inner cam (11), the movable rack (13) and the center wheel (14) overlap and are supported by frame bearings. Therefore, the internal combustion engine of the present invention not only has a series of advantages of the internal cam rolling movable tooth transmission with any tooth difference, but also has a very compact structure. The cam profile curve of the outer surface of the multi-phase inner cam (11) that is convex and inner can be selected from different curves as required. In this embodiment, the outer surface cam profile curve of the outer convex inner multiphase inner cam (11) is determined according to the cosine acceleration movement law of the piston (6), that is, when the outer convex inner multiphase inner cam (11) rotates at a constant speed, the piston ( 6) Perform reciprocating linear motion according to the law of cosine acceleration motion, and its motion cycle is a quarter of the rotation cycle of the external convex internal multi-phase internal cam (11). The power output shaft of the internal combustion engine in this embodiment is the output shaft (10) that is keyed to the center wheel. The internal cam rolls with any tooth difference and the movable gear drives the external convex internal multi-phase internal cam to input power. The movable gear frame is fixed, and the central wheel outputs. A large transmission ratio can be realized, and the internal combustion engine can output power at low speed and high torque.

The working principle of the internal combustion engine of the present invention is: when the internal combustion engine is working, the gas burns the piston (6) in the working cylinder, and its driving force acts on the external convex internal multi-phase internal cam (11) through the linear reciprocating motion of the push rod (7). ), push the external convex internal multi-phase internal cam (11) to rotate counterclockwise, and the power is transmitted from the external convex internal multi-phase internal cam (11) to the output shaft (10) through any tooth difference internal cam rolling movable tooth transmission mechanism for output ;Due to the rotation of the convex inner multi-phase inner cam (11), the roller (9) rolls along the contour of the outer convex inner multi-phase inner cam (11) so that the push rod (7) and the piston (6) without work Sliding inside the cylinder (3) completes the task of inhaling, or compressing gas, or exhausting. In Fig. 1, cylinders a and e, b and f, c and g, d and h are each regarded as a group, and there are four groups of cylinders in total. Assume that the pistons in cylinders a and e are at the beginning position of the suction stroke, the pistons in cylinders b and f are at the beginning position of the compression stroke, the pistons in cylinders c and g are at the beginning position of the gas combustion power stroke, and the cylinders d and h are The piston in the cylinder is at the starting position of the exhaust stroke, and the stroke progress of the pistons of two adjacent groups of cylinders differs by one stroke, corresponding to the phase difference of the rotation angle of the multi-phase internal cam (11) which is convex and internal, and is 45°. Then, after the convex internal multi-phase internal cam (11) turns counterclockwise by 45°, cylinders b and f start to burn and perform work again, and after the external convex internal multi-phase internal cam turns counterclockwise by 45° again, cylinders a and e start to burn again. Combustion works, cylinders a and e complete the combustion work, then cylinders d and h start to burn work, and then it is the turn of cylinders c and g to burn work, and so on, so that the external convex internal multi-phase internal cam (11) is continuously and smoothly Running, the inner surface of the multi-phase inner cam pushes the rolling movable tooth (12) to move, and the rolling movable tooth (12) moves in the radial guide groove of the movable tooth frame (13) and is constrained by the movable tooth frame Mesh with the center wheel (14), drive the center wheel (14) to rotate, and then output the power and motion continuously and smoothly through the output shaft keyed with the center wheel (14). Since the two cylinders in each group of cylinders are symmetrically arranged 180° apart, and the working conditions are the same at any time, the combined effect of the eight pistons (6) on the outer convex inner multi-phase inner cam (11) is: outer convex inner multi-phase inner Cam (11) is only subjected to the effect of pure force couple, and resultant force is zero. Since the outer convex inner multi-phase inner cam (11) and the inner cam with any tooth difference roll and movable tooth transmission mechanism not only have structural symmetry, but also the force is symmetrical, so the resultant force they receive is zero, and they are only acted by force couples. Therefore, the impact vibration of the internal combustion engine of the present invention is small, and the movement is stable.

In order to illustrate the speed change characteristics of the internal combustion engine of the present invention, it is assumed that the number of teeth Z ₁₂ of the rolling movable tooth (12) = 8, the wave number Z ₁₄ of the center wheel (14) = 11, and the rotational speed of the external convex internal multi-phase internal cam (11) is n ₁₁ =1100r/min. The movable gear frame (13) is fixed ( ), then the transmission ratio of the cam rolling movable gear transmission in any tooth difference is:

Therefore, n ₁₄ = n ₁₀ =300r/min. It can be seen that the steering of the center wheel (14) and the output shaft (10) is the same as that of the multi-phase inner cam (11), but the speed is much lower than that of the multi-phase inner cam (11). The internal-phase cam (11) decelerates the output power of the internal combustion engine, which can realize high-torque low-speed output. This feature is especially suitable for occasions with high torque output, and can be widely used in military and construction machinery fields that require high-power mechanical transmission, such as tanks, armored vehicles, excavators, bulldozers, etc.

The internal combustion engine of this embodiment is also provided with a starting system, an air distribution system, a lubricating system, an oil supply system, a cooling system, and the like.

Claims (4)

1. Cam roll transmission internal combustion engine with any tooth difference between convex and internal, consisting of exhaust valve (1), cylinder head (2), cylinder (3), intake valve (4), cylinder block (5), piston (6) , push rod (7), spring (8), roller (9), output shaft (10), convex inner multi-phase inner cam (11), rolling movable tooth (12), movable gear rack (13), The center wheel (14) consists of a starting system, an air distribution system, a cooling system, an oil supply system, and a lubricating system, and is characterized in that eight cylinders (3) are symmetrically and evenly distributed around the outer convex inner multi-phase inner cam (11) , the external convex internal multi-phase internal cam rolling transmission mechanism converts the reciprocating linear motion of the piston into the rotary motion of the output shaft (10) - the linear reciprocating motion of the cylinder piston (6) through the push rod (7) makes the external convex internal multiple The inner phase cam (11) rotates, and the outer convex inner multi-phase inner cam transmits the power to the output shaft (10) keyed to the center wheel through the rolling movable tooth transmission of the inner cam with any tooth difference, and finally the power is transmitted by the output shaft (10) Output, the external convex internal multi-phase internal cam (11) organically integrates the internal combustion engine and the internal cam rolling movable tooth transmission with any tooth difference, so that the internal combustion engine does not need to be equipped with a reducer; the above-mentioned external convex internal multi-phase internal cam rolling transmission The mechanism is composed of a cam mechanism and an internal cam rolling movable tooth transmission mechanism with any tooth difference. The cam mechanism is composed of a push rod (7), an externally convex internal multi-phase internal cam (11), a cylinder body (5), and a spring (8), one end of the push rod is fixedly connected with the piston (6), and the other end is equipped with a roller (9). There is a rolling friction connection between them, and the roller (9) on the push rod (7) is always in contact with the convex inner multi-phase inner cam (11) due to the action of the spring (8); The mechanism is composed of an outer convex inner multi-phase inner cam (11), a rolling movable tooth (12), a movable gear rack (13), a center wheel (14) and an output shaft (10) keyed to it, and the output shaft (10 ), the outer convex inner multi-phase inner cam (11), the movable gear frame (13) and the center wheel (14) The axis lines of the four parts coincide and are supported by the frame bearings, the number of teeth of the rolling movable teeth Z ₁₂ and the center The wave number Z ₁₄ of the wheel (14) has a difference of 3, the movable rack (13) is fixedly connected to the frame, and the center wheel (14) is keyed to the output shaft (10); The moving assembly consists of two parts, the rolling assembly is composed of a sleeve (15) and the needle (16), the moving assembly is composed of a moving pin (17) and a moving block (18), and the rolling assembly is moved by the large end of the moving pin (17). And moving block (18) is restricted on moving pin (17), and forms rotating pair with moving pin (17), and the big end of moving block (18) and moving pin (17) can be in the diameter of movable rack (13) It moves in the guide groove and forms a moving pair with the movable rack (13), and the outer cylindrical surface of the sleeve (15) meshes with the convex inner multi-phase inner cam (11) and the center wheel (14) respectively to form a rolling pair. The moving block (18) has a clearance fit with the moving pin (17) so that the moving pin The big end of the nail (17) and the moving block (18) can adapt to the radial guide groove of the movable gear frame to avoid jamming; the output shaft speed depends on the transmission ratio of the cam rolling movable gear transmission in any tooth difference, and the Properly selecting the tooth matching scheme of the cam rolling movable tooth transmission with any tooth difference can obtain a larger transmission ratio and realize low-speed and high-torque output. 2. The externally convex internally arbitrary tooth difference cam rolling transmission internal combustion engine according to claim 1, characterized in that: the exterior of the externally convex internally multi-phase internal cam (11) has an angle of 90° to each other and is axially symmetrical The four-phase cam with four protruding parts, the inside is a multi-phase internal cam, that is, the inside is a three-phase internal cam with three protruding parts that form an angle of 120° and are axially symmetrical, and its own mass is completely balanced. Its contour curve is a cosine curve, so the convex inner multi-phase inner cam (11) is not only the cam in the cam mechanism, but also the multi-phase inner cam in the rolling movable tooth transmission mechanism of the inner cam with any tooth difference. The cam rolling movable tooth transmission mechanism is embedded in the inner multi-phase inner cam (11) which is convex and inner. 3. According to any one of claims 1 to 2, the cam rolling transmission internal combustion engine with any tooth difference between the convex interior and the convex interior is characterized in that: the internal combustion engine is circularly symmetrical around the convex interior multi-phase internal cam (11). There are eight cylinders (3), among which any two cylinder pistons (6) which are symmetrically arranged at a distance of 180° are in synchronous working state, and the two cylinder pistons in synchronous working state are regarded as a group, and the four groups of cylinder pistons carry out the suction stroke in sequence , compression stroke, gas combustion power stroke and exhaust stroke, the piston stroke process of the adjacent two groups of cylinders corresponds to the phase difference of the cam (11) of the external convex internal multi-phase internal cam (11) with a phase difference of 45°, and the cylinder piston (6) passes through the push rod The linear reciprocating motion of (7) makes the outer convex inner multi-phase inner cam (11) rotate, and the outer convex inner multi-phase inner cam transmits the power to the output shaft keyed to the center wheel through the rolling movable tooth transmission of the inner cam with any tooth difference (10), the final power is output by the output shaft (10). 4. The cam rolling transmission internal combustion engine according to any one of claims 1 to 2, characterized in that: in any tooth difference internal cam rolling movable tooth transmission, the rolling movable tooth (12) It meshes with the center wheel (14) and the external convex internal multi-phase internal cam (11), so it can realize the transmission of high power and high torque.