CN2898438Y

CN2898438Y - Balancing shaft equipment of engine

Info

Publication number: CN2898438Y
Application number: CN 200620003261
Authority: CN
Inventors: 何昭昌
Original assignee: Kwang Yang Motor Co Ltd
Current assignee: Kwang Yang Motor Co Ltd
Priority date: 2006-03-16
Filing date: 2006-03-16
Publication date: 2007-05-09
Anticipated expiration: 2016-03-16

Abstract

The utility model relates to a balancing shaft equipment of engine. The piston of the engine is connected by a rod with a crank in the crank tank, the crank drives a balance shaft running by a gear, after the piston is driven and moved back and forth, the crank can be driven in a circumference movement via the rod, and the balance shaft can be used to counteract the shake of the crank, an aligning mark is formed on the clump weight of the crank, and an aligning plus mark is also formed on the driven wheel of the balance shaft, and an oillet is equipped on the lower part of the aligning mark of the driven wheel, the aligning on the clump weight of the crank is observed by the oillet, in order to align the aligning mark on the clump weight of the crank and the aligning mark of the balance shaft, to achieve the convenient of installing balance shaft.

Description

The balance shaft apparatus of engine

[technical field]

The utility model is the balance shaft apparatus about a kind of engine, particularly about a kind of in assembling during engine, can make things convenient for and the balance shaft apparatus of the engine of correct vuilt-up crankshaft and trunnion shaft.

[background technique]

For motor vehicle engine 1 is consulted shown in Figure 1, and wherein belt speed change mechanism 2 is to be placed in the transmission case 11, and the bent axle 13 that the power that engine 1 is produced can see through in the crankcase 12 transmits, and this belt speed change mechanism 2 is driven.This belt speed change mechanism 2 includes; One is arranged at that slider disc 21, on this bent axle 13 is arranged on this bent axle 13 and the drive plate 22, that is positioned at one of this slider disc 21 side is arranged on this bent axle 13 and the ball 24, that is positioned at 23 of slider disc 21 and this swash plates can drive driven axle 25, two that trailing wheel rotates and is arranged on this driven axle 25 driven disc 26, and is fixed in clutch 27, a drivign belt 28 on this driven axle 25, and one on the transmission-case cover 111 of this transmission case 11 and the bearing 29 in order to support this driven axle 25.Wherein, this slider disc 21 forms a belt speed change mechanism 2 with this drive plate 22, one of this drivign belt 28 end be the position between this drive plate 22 and this slider disc 21, the other end is then between two driven discs 26.

Car engine 1 is in firing chamber 16, and the power that produces by firing can promote piston 14 to-and-fro motion, thereby drive this bent axle 13 and rotate, this slider disc 21 then can be rotated synchronously with this drive plate 22, and at this moment, 24 on this ball can be subjected to centrifugal action and move.When opening the throttle, the rotating speed of this bent axle 13 also can and then increase, increase and move outward and make this ball 24 be subjected to action of centrifugal force, 21 of this slider disc are subjected to these ball 24 contacts and slide toward this drive plate 22, the distance that this drive plate 22 and this slider disc are 21 then can be dwindled, ordering about this drivign belt 28 extends out, thereby increased the rotation circumference range of this drivign belt 28, can make driven disc 26 faster rotational speed whereby, order about this driven axle 25 and drive the trailing wheel (not shown) and rev up and see through this clutch 27, and increase the gait of march of vehicle.

Otherwise, when loosening throttle, these ball 24 suffered centrifugal actions reduce, cooperate the extrusion of this drivign belt 28, make the distance of 21 of this drive plate 22 and this slider disc increase, the circumference slewing area of this drivign belt 28 then can be dwindled, so these driven disc 26 rotating speeds also can and then reduce, trailing wheel then reduces rotating speed with these driven axle 25 rotating speeds, the gait of march of vehicle thereby slow down.

Please cooperate Fig. 1,2 to consult, piston 14 is to be connected with crankcase 12 interior bent axles 13 with connecting rod 15, wherein piston 14 fired by oil gas powered the time, be to operate for a to-and-fro motion, in order to make the to-and-fro motion of piston 14, become the circular movement of bent axle 13, therefore with the binding of connecting rod 15 with bent axle 13, it is the design that utilizes balancing weight 131, make it become the binding of an eccentric, promote piston 14 when oil gas fires, this piston 14 is pushed thrust the balancing weight 131 of bent axle 13 to by connecting rod 15, and then can make bent axle 13 produce circular movement.But so make flowing mode, the balancing weight 131 of this bent axle 13 is because of there being the generation of inertial force, and cause bent axle 13 when start, can produce vibrations, and these vibrations also can increase along with the raising of bent axle 13 start speed synchronously, therefore in order to allow the running of bent axle 13, can be a state stably, be at the other trunnion shaft 3 of setting up of the side of bent axle 13, and the binding of bent axle 13 and trunnion shaft 3, it is the other actuation gear 132 of side that utilizes the bearing 133 of being located at bent axle 13, come to be meshing with each other with the driven gear of being located on the trunnion shaft 3 32, bent axle 13 drives trunnion shaft 3 with rotation via actuation gear 132 and driven gear 32, whereby, when bent axle 13 is driven start by piston 14 with connecting rod 15, beginning can effectively be eliminated balancing weight 131 disappearances because of the vibrations that inertial force produced of bent axle 13, though setting up of this trunnion shaft 3 can be eliminated the disappearance that bent axle 13 shakes, yet, because the center of gravity side of the balancing weight 131 of bent axle 13 must be corresponding with the center of gravity side of the balancing weight 31 of trunnion shaft 3, just can reach counteracting inertial force, reduce the purpose of vibrations, so when carrying out the assembling of bent axle 13 and trunnion shaft 3, assembler must be very attention and the assembling deviation can not be arranged, thereby cause the inconvenience of correct assembling and the lengthening of time.

The mode of the assembling of above-mentioned bent axle 13 of known solution and trunnion shaft 3, as shown in Figure 3, mainly be to utilize on the end face of the outer periphery of the center of gravity side of the actuation gear 132 of bent axle 13, to carve to establish in advance to align mark 1321, same, on the outside end face of the center of gravity side of the driven gear 32 of trunnion shaft 3, also carve in advance and establish one and align mark 321, when assembling, make the mark 321 that aligns that aligns mark 1321 and driven gear 32 of actuation gear 132 align, and allow the actuation gear 132 of bent axle 13 and the driven gear 32 of trunnion shaft 3 be meshing with each other, just can make the center of gravity side of the balancing weight 131 of bent axle 13 be a corresponding state with the center of gravity side of the balancing weight 31 of trunnion shaft 3, that is to say, can make the correct state that is combined as of bent axle 13 and trunnion shaft 3.But, on some special occasions, as shown in Figure 4, for in response to engine 1 special demand, the footpath can be designed to the external diameter greater than actuation gear 132 outside the bearing 133 on the bent axle 13, this moment the aligning mark 1321 and can be covered of actuation gear 132 by bearing 133, and can't be easily and the mark 321 that aligns of driven gear 32 do the action that aligns.Therefore, how to solve in above-mentioned occasion bent axle 13 and smooth and easy, the quick and correct assembling of trunnion shaft 3 energy, real problem for solving.

[model utility content]

The purpose of this utility model is to provide a kind of balance shaft apparatus of engine, can be convenient to the mark that aligns on the counter weight piece is done the action of aliging with the mark that aligns of trunnion shaft follower, to reach the convenience of assembling trunnion shaft.

In order to achieve the above object, the utility model provides a kind of balance shaft apparatus of engine, the piston of this engine links with the bent axle in connecting rod and the crankcase, this bent axle rotates via gear driven one trunnion shaft, when piston be pushed carry out reciprocal start after, can drive bent axle through connecting rod and do a circumference formula start, and utilize trunnion shaft to offset the vibrations of bent axle, it is characterized in that: form one on the balancing weight of this bent axle and align mark, also forming one on the follower of trunnion shaft aligns mark in addition, and be provided with window in the below that aligns mark of follower, see apparent place align mark on the balancing weight of bent axle by this window, do the action of aliging with the mark that aligns on the balancing weight of convenient bent axle with the mark that aligns of the follower of trunnion shaft whereby, to reach the convenience of assembling trunnion shaft.

The balance shaft apparatus of described engine, wherein, the external diameter of the bearing on this bent axle is the external diameter greater than actuation gear.

In sum, the balance shaft apparatus of engine of the present utility model, its beneficial effect is: align mark by form one on the balancing weight of this bent axle, also forming one on the follower of trunnion shaft aligns mark in addition, and be provided with window in the below that aligns mark of follower, see apparent place align mark on the balancing weight of bent axle by this window, whereby so that the mark that aligns on the balancing weight of bent axle is done the action of aliging with the mark that aligns of the follower of trunnion shaft, to reach the convenience of assembling trunnion shaft.

[description of drawings]

Fig. 1 is the structural representation of known engine.

Fig. 2 is the plan view of known bent axle and trunnion shaft.

Fig. 3 is the schematic representation of known bent axle and trunnion shaft.

Fig. 4 is the schematic representation of another known bent axle and trunnion shaft.

Fig. 5 is the plan view of the utility model bent axle and trunnion shaft.

Fig. 6 is the stereogram of the utility model bent axle.

The schematic representation of alignment when Fig. 7 is the utility model assembling.

[embodiment]

Effect for enabling to be easier to understand structure of the present utility model and can reach cooperates graphic being described as follows now.

The utility model is meant can be convenient to bent axle 4 and trunnion shaft 5 assemblings and the structure that combines, and its mechanism is the same with the person of commonly using with function mode as for the engine part, so repeat no more.

At first see also shown in Fig. 5,6, bent axle 4 of the present utility model links by connecting rod 6 and piston 7, two sides in the balancing weight 42 of bent axle 4 are arranged with bearing 43, between the balancing weight 42 of a side and the bearing 43 actuation gear 41 is set therein in addition, this actuation gear 41 can be meshing with each other with the driven gear 51 of trunnion shaft 5, drives trunnion shaft 5 by bent axle 4 via actuation gear 41 and driven gear 51 and rotates synchronously; The centre of this trunnion shaft 5 has balancing weight 52, in the outside and the sheathed driven gear 51 of the balancing weight 52 of trunnion shaft 5.

Please cooperate Fig. 5,7 to consult, the utility model mainly is, on the end face of the outer periphery of the center of gravity side of the balancing weight 42 of bent axle 4, carve to establish in advance and align mark 421, on the outside end face of the center of gravity side of the driven gear 51 of trunnion shaft 5, also carve in advance in addition and establish one and align mark 511, and this align mark 511 below offer a window that runs through 512; The utility model is in when assembling, what at first the window 512 on the driven gear 51 was looked for bent axle 4 aligns mark 421, and make the mark 421 that aligns of bent axle 4 place window 512 on the driven gear 51, can do the action that mark 511 aligns that aligns that aligns mark 421 and trunnion shaft 5 of bent axle 4 whereby, and allow the actuation gear 41 of bent axle 4 and the driven gear 51 of trunnion shaft 5 be meshing with each other, just can make the center of gravity side of the balancing weight 42 of bent axle 4 be a corresponding state with the center of gravity side of the balancing weight 52 of trunnion shaft 5, that is to say, can make the correct state that is combined as of bent axle 4 and trunnion shaft 5.

Effect of the present utility model is, by on the outer periphery end face of the balancing weight 42 center of gravity sides of bent axle 4, carving the window of establishing 512 that mark 421 is engaged in the driven gear 51 of trunnion shaft 5 that aligns in advance, and carve on the outside end face of driven gear 51 center of gravity sides establish align mark 511, when assembler will make up, only need see through the window 512 of driven gear 51, make the mark 511 that aligns of the driven gear 51 that aligns mark 4 21 and trunnion shaft 5 of bent axle 4 align, owing to align mark 421 two, after 511 alignment, can make the center of gravity side of the balancing weight 42 of the center of gravity side of balancing weight 42 of bent axle 4 and trunnion shaft 5 is a corresponding state, also be the correct assembled state of bent axle 4 and trunnion shaft 5, the external diameter that does not have because of the bearing 43 of bent axle 4 becomes big, the disappearance of bent axle 4 that is produced and trunnion shaft 5 assembling difficulties takes place, and still can the very quick correct action of finishing assembling, not only can not make a fault and can shorten time of assembling.

In sum, the utility model can reach quick and correct assembling by above-mentioned design, can reach the purpose and the effect of institute's demand.

[main element symbol description]

1 engine, 11 transmission cases, 111 transmission-case covers

12 crankcases, 13 bent axles

131 balancing weights, 132 driven wheels

1321 align mark 133 bearings

14 pistons, 15 connecting rods

16 combustion chambers

2 belt speed change mechanisms, 21 slider disc, 22 driving-discs

23 swash plates, 24 balls

25 driven axles, 26 driven discs

27 clutches, 28 drivign belts

29 bearings

3 trunnion shafves, 31 balancing weights, 32 driven gears

321 align mark

4 bent axles, 41 actuation gears, 42 balancing weights

421 align mark 43 bearings

5 trunnion shafves, 51 driven gears

511 align mark 512 windows

52 balancing weights

6 connecting rods

7 pistons

Claims

1. the balance shaft apparatus of an engine, the piston of this engine links with the bent axle in connecting rod and the crankcase, this bent axle rotates via gear driven one trunnion shaft, it is characterized in that: form one on the balancing weight of this bent axle and align mark, on the follower of this trunnion shaft, also form one and align mark, and be provided with in the below that aligns mark of follower and be used to see apparent place the window that aligns mark on the counter weight piece.

2. the balance shaft apparatus of engine as claimed in claim 1, it is characterized in that: the external diameter of the bearing on this bent axle is greater than the external diameter of the actuation gear on this bent axle.