CN220667679U - Linear reciprocating motion and rotation conversion structure for internal combustion engine - Google Patents

Abstract

The utility model relates to the field of mechanical transmission structures, in particular to a structure for converting linear reciprocating motion and rotation for an internal combustion engine. The utility model provides a structure for converting linear reciprocating motion and rotation for an internal combustion engine, which comprises a mounting frame, transverse rails and the like, wherein the mounting frame is provided with two transverse rails. The rack connecting rod is arranged between the two transverse rails in a sliding mode, the rack connecting rod is in alternate meshed transmission with the gear deficiency on the main shaft to replace an original crank connecting rod mechanism of the internal combustion engine, the auxiliary transmission assembly is matched, the energy conversion efficiency between the linear motion of the rack connecting rod and the rotation of the main shaft is improved, the energy loss is effectively reduced through the oil/electricity adjustable damping structure, and the energy conversion efficiency between the linear motion of the rack connecting rod and the rotation of the main shaft is further improved. The technical problems that the energy conversion efficiency between the linear reciprocating motion and the rotation of the mechanical transmission of the internal combustion engine is low and the engine is severely vibrated are effectively improved.

Description

Linear reciprocating motion and rotation conversion structure for internal combustion engine

Technical Field

The utility model relates to the field of mechanical transmission structures, in particular to a structure for converting linear reciprocating motion and rotation for an internal combustion engine.

Background

In a conventional power output mode of mechanical transmission of a piston type internal combustion engine, a crank-link mechanism is generally adopted as a conversion mode between linear reciprocating motion and rotation, the piston is driven to reciprocate to perform linear motion by energy generated by combustion in the internal combustion engine, the linear reciprocating motion of the piston is converted into rotation of a rotating shaft through the crank-link mechanism, and the rotating shaft is effectively driven to output the rotation as power.

However, in the transmission process of the crank-link mechanism, there is still a severe vibration of the engine caused by unbalance of the moving parts of the crank-link during the swinging process, and the energy conversion efficiency between the linear reciprocating motion and the rotation is low, so that improvement on the conversion mode between the linear reciprocating motion and the rotation and the corresponding conversion structure is needed.

Disclosure of Invention

In order to solve the technical problems that the energy conversion efficiency between the linear reciprocating motion and the rotation of the mechanical transmission of the internal combustion engine is low and the engine is severely vibrated, the utility model provides a structure for converting the linear reciprocating motion and the rotation of the internal combustion engine.

The technical scheme is as follows: a structure for converting linear reciprocating motion and rotation for an internal combustion engine comprises a mounting frame, a transverse rail, a rack connecting rod, a main shaft, a pendulum bob, a transmission block, a buffer wheel, an adjustable shock absorber and an auxiliary transmission assembly; the front side and the rear side of the mounting frame are fixedly connected with two inserting rails respectively; a transverse rail is inserted between every two adjacent left and right insertion rails; the front side and the rear side of the mounting frame are fixedly connected with a cover plate for shielding the plug rail respectively; a rack connecting rod is connected between the two transverse rails in a sliding way; the middle part of the rack connecting rod is provided with a hollow structure; the front side and the rear side of the hollow area in the middle of the rack connecting rod are fixedly connected with an inner rack respectively; the middle part of the mounting frame is rotationally connected with a main shaft; the lower end of the main shaft is fixedly connected with a gear lack; the gear lack is positioned between the two inner tooth bars; the left side and the right side of the hollow area in the middle of the rack connecting rod are respectively connected with an elastic piece; the upper side of the main shaft is rotationally connected with a pendulum bob through a bushing; the rear side of the pendulum bob is rotationally connected with a crank; the right end of the crank is rotationally connected with a rack connecting rod; the left side and the right side of the mounting frame are respectively and rotatably connected with a transmission block; one end of each of the two transmission blocks, which is close to the pendulum bob, is rotatably connected with a buffer wheel; the two buffer wheels are tightly attached to the pendulum bob; the rear side of the mounting frame is rotationally connected with two adjustable shock absorbers through a rotating shaft; the two adjustable shock absorbers are respectively connected with one end of the adjacent transmission block, which is far away from the pendulum bob, through a rotating shaft in a rotating way; an auxiliary transmission component is commonly connected between the lower sides of the gear-lack and the rack connecting rod.

As an improvement of the scheme, the ratio of the number of the teeth of the missing gear is 6/16.

As an improvement of the scheme, a plurality of rollers are respectively arranged on the front side and the rear side of the rack connecting rod; the rollers roll in adjacent transverse rails respectively.

As an improvement of the scheme, the teeth of the internal rack, which are in contact with and separated from the gear lack during switching, are of a tangent plane structure with irregularly-shaped structure, so that impact is reduced, and smooth transition is realized.

As an improvement of the scheme, the elastic piece is a spring piece protruding towards the middle part of the rack connecting rod.

As an improvement of the scheme, the auxiliary transmission assembly comprises a fixing piece, a roller bearing and a lug;

the lower side of the gear lack is connected with a fixing piece; the roller bearing is rotationally connected to the fixing piece; the left side and the right side of the bottom of the rack connecting rod are fixedly connected with a bump respectively; the opposite sides of the two convex blocks are respectively provided with an arc surface structure.

As an improvement of the scheme, the fixing piece consists of a main clamping block, an auxiliary clamping block and a fastening pin;

the lower side of the gear lack is sleeved with a main clamping block and an auxiliary clamping block, and the main clamping block and the auxiliary clamping block form a complete clamping block together; a fastening pin is arranged between the main clamping block and the auxiliary clamping block; the main clamping block is rotationally connected with the roller bearing.

As an improvement of the scheme, the upper part of the main shaft is fixedly connected with a spur gear.

The beneficial effects are that: according to the structure for converting the linear reciprocating motion and the rotation of the internal combustion engine, which is described by the utility model, the original crank connecting rod mechanism of the internal combustion engine is replaced by alternately meshing and transmitting a rack connecting rod and a gear lack on a main shaft, so that the energy conversion efficiency between the linear motion of the rack connecting rod and the rotation of the main shaft is improved, an oil/electricity adjustable shock absorption structure consisting of a pendulum bob, a crank, a transmission block, a buffer wheel and an adjustable shock absorber is arranged between the main shaft and the rack connecting rod, the energy loss generated in the reciprocating motion process of the rack connecting rod is effectively reduced, and an auxiliary transmission assembly is commonly connected between the gear lack and the lower side of the rack connecting rod, so that the energy conversion efficiency between the linear motion of the rack connecting rod and the rotation of the main shaft is further improved;

the technical problems that the energy conversion efficiency between the linear reciprocating motion and the rotation of the mechanical transmission of the internal combustion engine is low and the engine is severely vibrated are effectively improved.

Drawings

Fig. 1 is a schematic perspective view illustrating the structure of the present utility model according to an embodiment;

FIG. 2 is a cross-sectional view of a mounting bracket depicting the present utility model according to an embodiment;

FIG. 3 is a cross-sectional view of a cross-rail depicting the present utility model according to an embodiment;

FIG. 4 is a partial bottom view depicting the present utility model according to an embodiment;

FIG. 5 is another perspective view of FIG. 4 depicting the present utility model according to an embodiment;

FIG. 6 is a schematic perspective view illustrating a rack bar and a spindle according to an embodiment of the present utility model;

FIG. 7 is an exploded view of a rack connecting rod and spindle depicting the present utility model according to an embodiment;

FIG. 8 is an exploded view of a fastener according to an embodiment depicting the present utility model;

fig. 9 is an enlarged view of region a in fig. 7, depicting the present utility model according to an embodiment.

Reference numerals in the drawings: 1-mounting frame, 11-inserting rail, 12-cover plate, 2-transverse rail, 21-fine adjustment screw, 22-locking nut, 3-rack connecting rod, 301-inner rack, 302-bump, 31-roller, 32-elastic piece, 4-main shaft, 41-missing gear, 42-straight gear, 5-pendulum, 51-crank, 6-transmission block, 61-buffer wheel, 62-adjustable damper, 71-main clamping block, 72-auxiliary clamping block, 73-fastening pin and 74-roller bearing.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent. It is only stated that the terms of orientation such as up, down, left, right, front, back, inner, outer, etc. used in this document or the imminent present utility model, are used only with reference to the drawings of the present utility model, and are not meant to be limiting in any way.

Example 1

The structure for converting linear reciprocating motion and rotation for the internal combustion engine comprises a mounting frame 1, a transverse rail 2, a rack connecting rod 3, a main shaft 4, a pendulum 5, a transmission block 6, a buffer wheel 61, an adjustable shock absorber 62 and an auxiliary transmission assembly, as shown in fig. 1-9; the adjustable shock absorber 62 can be realized by adopting a hydraulic adjustment mode or a solenoid valve adjustment mode; two insertion rails 11 are welded on the front side and the rear side of the mounting frame 1 respectively; a transverse rail 2 is inserted between every two adjacent left and right insertion rails 11; the front side and the rear side of the mounting frame 1 are respectively connected with a cover plate 12 for shielding the plug rail 11 through bolts, and the transverse rail 2 is fixedly limited in the plug rail 11 through the cover plates 12; a rack connecting rod 3 is connected between the two transverse rails 2 in a sliding way; the middle part of the rack connecting rod 3 is provided with a hollow structure; an inner tooth bar 301 is welded on the front side and the rear side of the hollow area in the middle of the rack connecting rod 3 respectively; the middle part of the mounting frame 1 is rotationally connected with a main shaft 4; the lower end of the main shaft 4 is fixedly connected with a gear 41; the gear lack 41 is positioned between the two inner tooth strips 301, and the gear lack 41 is alternately meshed between the two inner tooth strips 301 in the process of driving the inner tooth strips 301 to move left and right by the rack connecting rod 3; as shown in fig. 9, the teeth of the internal tooth bar 301 at the time of switching between contact and separation with the pinion 41 are of a tangential plane structure with irregularly shaped cutting structure, reducing the impact, and smoothing excessive; the left side and the right side of the hollow area in the middle of the rack connecting rod 3 are respectively connected with an elastic piece 32, the elastic piece 32 buffers the impact between the rack connecting rod 3 and the gear lack 41 in the process of reciprocating movement of the rack connecting rod 3 in the left-right direction, and the elastic piece 32 is a spring piece protruding towards the middle of the rack connecting rod 3, so that the occupied volume of the elastic piece 32 is effectively reduced, and the use weight of the elastic piece is reduced; the upper side of the main shaft 4 is rotatably connected with a pendulum 5 through a bushing; a crank 51 is rotatably connected to the rear side of the pendulum 5; the right end of the crank 51 is rotationally connected with the rack connecting rod 3; the left side and the right side of the mounting frame 1 are respectively and rotatably connected with a transmission block 6; one end of each of the two transmission blocks 6, which is close to the pendulum 5, is rotatably connected with a buffer wheel 61; both buffer wheels 61 are tightly attached to the pendulum 5; the left front end and the right front end of the pendulum 5 are respectively provided with a curved surface structure which is attached to the moving track of the buffer wheel 61; the rear side of the mounting frame 1 is rotatably connected with two adjustable shock absorbers 62 through a rotating shaft; two adjustable shock absorbers 62 are respectively connected with one end of an adjacent transmission block 6 far away from the pendulum bob 5 through rotation of a rotating shaft; an auxiliary transmission component is commonly connected between the gear deficiency 41 and the lower side of the rack connecting rod 3; the upper part of the main shaft 4 is fixedly connected with a spur gear 42, the lower part of the main shaft 4 far away from the spur gear 42 is fixedly connected with a flange plate, and the power input end of the gearbox is fixedly connected through the flange plate, so that the kinetic energy output is realized.

As shown in fig. 3, a plurality of rollers 31 are respectively installed at the front and rear sides of the rack link 3; the rollers 31 roll in the adjacent transverse rails 2 respectively, so that the resistance of the rack connecting rod 3 moving in the transverse rails 2 is reduced, and the energy loss generated in the process of moving the rack connecting rod 3 left and right is reduced.

As shown in fig. 4-8, the auxiliary drive assembly includes a mount, roller bearing 74 and a projection 302; a fixing member is connected to the lower side of the gear segment 41; the fixed part is rotatably connected with a roller bearing 74; a lug 302 is welded on the left side and the right side of the bottom of the rack connecting rod 3 respectively; the opposite sides of the two lugs 302 are respectively provided with an arc surface structure which is matched with the moving track of the roller bearing 74; the fixing piece consists of a main clamping block 71, a secondary clamping block 72 and a fastening pin 73; the lower side of the gear lack 41 is sleeved with a main clamping block 71 and a secondary clamping block 72, and the main clamping block 71 and the secondary clamping block 72 form a complete clamping block together; a fastening pin 73 is arranged between the main clamping block 71 and the auxiliary clamping block 72, the main clamping block 71 and the auxiliary clamping block 72 are fixed together by the fastening pin 73, and the main clamping block 71 and the auxiliary clamping block 72 can be conveniently and quickly disassembled only by disassembling the fastening pin 73; the main block 71 is rotatably connected to the roller bearing 74.

The gear number ratio of the gear lack 41 is 6/16, half of 16 teeth are 8 teeth, 2 teeth are eliminated at the idle positions of two ends, so that the gear lack 41 is 6 teeth, the transmission force is too thin and insufficient beyond 16 teeth, and the gear lack 41 is lower than the running stop of a 16-tooth structure.

The operation steps of the structure for converting linear reciprocating motion and rotation for the internal combustion engine are as follows:

the mounting frame 1 is arranged in a cavity of the internal combustion engine, the rack connecting rod 3 is connected with a piston mechanism of the internal combustion engine, the spur gear 42 is connected with functional loads such as a fan of the engine, and one side of the main shaft 4 away from the spur gear 42 is connected with a transmission mechanism of the internal combustion engine.

Firstly, a piston mechanism of the internal combustion engine drives a rack connecting rod 3 to reciprocate in the left-right direction between two transverse rails 2, when a pinion 41 is meshed with an inner gear 301 at the rear side of the rack connecting rod 3, the rear inner gear 301 drives the pinion 41 to rotate clockwise at a overlook angle in the rightward moving process, the pinion 41 drives a main shaft 4 to rotate, when the pinion 41 leaves the rear inner gear 301, the pinion 41 is impacted on an elastic piece 32 at the left side, the elastic piece 32 buffers the impact between the rack connecting rod 3 and the pinion 41, then the pinion 41 is meshed with the front inner gear 301 under the rotation inertia, and the front inner gear 301 drives the pinion 41 to continuously rotate in the leftward moving process, and the rack connecting rod 3 which reciprocates left-right is meshed with the pinion 41 alternately through the two inner gears 301 to drive the main shaft 4 to rotate continuously at a high speed, so that the pinion 4 is driven by alternately meshed with the pinion 41 alternately, the original crank connecting rod mechanism of the internal combustion engine is replaced, the linear motion of the rack connecting rod 3 and the main shaft 4 is improved, the energy conversion efficiency of the internal gear is reduced, and the energy conversion of the internal gear is effectively reduced in the vibration is carried out in the process of the internal gear connecting rod through the conversion of the rack connecting rod.

In the rotation process of the main shaft 4 and the gear lack 41, the gear lack 41 drives the roller bearing 74 on the fixed part to rotate around the axis of the main shaft 4 under the inertia force of the flywheel of the engine, meanwhile, the rack connecting rod 3 synchronously drives the two convex blocks 302 to reciprocate in the left-right direction, when the gear lack 41 is meshed with the inner toothed bar 301 at the front side of the rack connecting rod 3 to move from right to left to near the tail end, the gear lack 41 drives the roller bearing 74 to wind around and cling to the cambered surface of the convex block 302 at the right side, when the gear lack 41 is completely separated from the meshing of the inner toothed bar 301 at the front side of the rack connecting rod 3, the roller bearing 74 winds around to the vertex of the convex block 302 under the action of the inertia force, at the moment, one end piston reaches the bottom dead center of the working stroke, the other end piston reaches the top dead center of the working stroke and continues to rotate along the cambered surface, and the rotating gear lack 41 and the inner toothed bar 301 at the rear side of the rack connecting rod 3 with the reverse thrust are accurately meshed, and the meshing transmission, the meshing transmission of the gear lack 41 and the inner toothed bar 301 at the front side and the rear side of the rack connecting rod 3 is completed; in the process that the rack connecting rod 3 drives the left lug 302 to move from right to left, the rack connecting rod 3 pushes the roller bearing 74 to apply rotary thrust to the gear lack 41 again through the left cambered surface of the left lug 302, so that the rack connecting rod 3 performs auxiliary transmission work on the gear lack 41 through the two lugs 302, and the relative position accuracy and the energy conversion efficiency between the linear motion of the rack connecting rod 3 and the rotation of the main shaft 4 are further improved.

In the reciprocating movement process of the rack connecting rod 3, the rack connecting rod 3 drives the pendulum 5 to reciprocate in the left-right direction through the crank 51, the pendulum 5 reciprocally pushes the two buffer wheels 61 on the left side and the right side, the buffer wheels 61 are always kept close to the pendulum 5, the buffer wheels 61 are prevented from being impacted by the pendulum 5 to generate larger vibration, when the rack connecting rod 3 moves rightwards, the rack connecting rod 3 pulls the crank 51 to drive the front end of the pendulum 5 to swing leftwards, the pendulum 5 pushes the buffer wheels 61 on the left side to drive the transmission block 6 to rotate leftwards, the transmission block 6 pushes the adjustable shock absorber 62 to compress, in the compression process of the adjustable shock absorber 62, potential energy of the rack connecting rod 3 moving leftwards can be absorbed, the leftward movement of the rack connecting rod 3 is buffered, when the rack connecting rod 3 moves rightwards, the compressed adjustable shock absorber 62 pushes the transmission block 6 to rotate rightwards, the front end of the pendulum 5 is prevented from swinging rightwards through the buffer wheels 61, energy absorbed by the adjustable shock absorber 62 is returned to the rack connecting rod 3 through the pendulum 5 and the crank 51, and the energy loss generated in the leftward movement process of the rack connecting rod 3 is reduced.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.

Claims (7)

1. A structure for converting linear reciprocating motion and rotation for an internal combustion engine, comprising: a mounting frame (1);

the method is characterized in that: the utility model also comprises a plug-in rail (11);

the front side and the rear side of the mounting frame (1) are fixedly connected with two inserting rails (11) respectively; a transverse rail (2) is inserted between every two adjacent insertion rails (11); the front side and the rear side of the mounting frame (1) are fixedly connected with a cover plate (12) for shielding the plug rail (11) respectively; a rack connecting rod (3) is connected between the two transverse rails (2) in a sliding way; the middle part of the rack connecting rod (3) is provided with a hollow structure; the front side and the rear side of the hollow area in the middle of the rack connecting rod (3) are fixedly connected with an inner rack (301) respectively; the middle part of the mounting frame (1) is rotationally connected with a main shaft (4); the lower end of the main shaft (4) is fixedly connected with a gear-lack (41); the gear lack (41) is positioned between the two inner tooth strips (301); the left side and the right side of the hollow area in the middle of the rack connecting rod (3) are respectively connected with an elastic piece (32); the upper side of the main shaft (4) is rotationally connected with a pendulum bob (5) through a bushing; a crank (51) is rotatably connected to the rear side of the pendulum (5); the right end of the crank (51) is rotationally connected with the rack connecting rod (3); the left side and the right side of the mounting frame (1) are respectively and rotatably connected with a transmission block (6); one end of the two transmission blocks (6) close to the pendulum bob (5) is respectively and rotatably connected with a buffer wheel (61); the two buffer wheels (61) are closely attached to the pendulum bob (5); the rear side of the mounting frame (1) is rotationally connected with two adjustable shock absorbers (62) through a rotating shaft; two adjustable shock absorbers (62) are respectively connected with one end of an adjacent transmission block (6) far away from the pendulum bob (5) through rotation of a rotating shaft; an auxiliary transmission component is commonly connected between the gear lack (41) and the lower side of the rack connecting rod (3).

2. The structure for linear reciprocation and rotation conversion for an internal combustion engine according to claim 1, wherein: the front side and the rear side of the rack connecting rod (3) are respectively provided with a plurality of rollers (31); the rollers (31) roll in adjacent transverse rails (2).

3. The structure for linear reciprocation and rotation conversion for an internal combustion engine according to claim 1, wherein: the elastic piece (32) is a spring piece protruding towards the middle part of the rack connecting rod (3).

4. The structure for linear reciprocation and rotation conversion for an internal combustion engine according to claim 1, wherein: the auxiliary transmission assembly comprises a fixing piece;

the lower side of the gear lack (41) is connected with a fixing piece; the fixed piece is rotatably connected with a roller bearing (74); the left side and the right side of the bottom of the rack connecting rod (3) are fixedly connected with a bump (302) respectively; the opposite sides of the two bumps (302) are each provided with an arc surface structure.

5. The structure for converting linear reciprocating motion into rotation for an internal combustion engine according to claim 4, wherein: the fixing piece consists of a main clamping block (71), an auxiliary clamping block (72) and a fastening pin (73); a main clamping block (71) and an auxiliary clamping block (72) are sleeved on the lower side of the gear lack (41), and the main clamping block (71) and the auxiliary clamping block (72) form a complete clamping block together; a fastening pin (73) is arranged between the main clamping block (71) and the auxiliary clamping block (72); the main clamping block (71) is rotationally connected with the roller bearing (74).

6. The structure for converting linear reciprocating motion into rotation for an internal combustion engine according to claim 4, wherein: the number of teeth of the gear-missing (41) is 6/16.

7. The structure for converting linear reciprocating motion into rotation for an internal combustion engine according to claim 5, wherein: the upper part of the main shaft (4) is fixedly connected with a spur gear (42).