CN2661935Y - Balance mechanism of single cylinder diesel - Google Patents

Abstract

The utility model relates to an engine with a torque-balance device, in particular to a balance mechanism in the engine, which is mainly used for the diesel engine of 1125 to 1130 series. The utility model is characterized in that: a left and a right balancing blocks of a crankshaft and relative left and right balancing blocks of balance shaft A and balance shaft B are all stepped structure; wherein the gyration radius of the inner side of the left balancing block and the right balancing block of the crankshaft is larger than that of the outer side, and a stepped structure is formed; the gyration radius of the inner side of the left balancing block and the right balancing block of the balance shaft A and balance shaft B is less than that of the outer side, so that a reversed stepped structure is formed to make the stepped shapes in mutual transplacement. The gyration radius of the balancing block of the crankshaft and the balance shafts can be increased, and the balancing performance of the entire machine is improved by a complete balanced rotation inertia force and an one-level reciprocating inertial force; thereby the manufacturing costs can be lowered and the mass production is easy to be organized. The utility model also can be widely applicable for single-cylinder diesel engines in other series, and the economic efficiency is remarkable.

Description

The balanced controls of single cylinder diesel

Affiliated technical field

The utility model relates to a kind of motor with means for equalising, and particularly the balanced controls on the motor are mainly used in 1125～1130 serial diesel engines.

Background technique

At present, constantly to big cylinder diameter development, cylinder diameter diffuses into 130mm from 95mm to domestic single-cylinder farm diesel engine, and stroke is increased to 120mm from 115mm.In order to reduce cost, be convenient to tissue and produce list in enormous quantities, still adopt the train of S195 diesel engine.Because the increase of diesel engine power, the quality of corresponding piston, wrist pin, connecting rod increases considerably, but because the restriction of structure, existing balanced controls have been difficult to satisfy the balance of rotating inertia force and one-level reciprocal inertia force.Increase bent axle and balance shaft balancing piece width by widening body, rotating inertia force and one-level reciprocal inertia force that can only balance 80%～85%, even employing assembled crankshaft, steel equilibrium block proportion is bigger with bolt is fastened on the bent axle, rotating inertia force and one-level reciprocal inertia force that also can only balance 85%～90%, and not only the cost increase is more to adopt assembled crankshaft, and the reliability decrease of mechanism.

Summary of the invention

The purpose of this utility model is to adopt the equilibrium block of stepped construction, increased the turning radius of the equilibrium block of bent axle, trunnion shaft, improved the balance quality of complete machine effectively, rotating inertia force and one-level reciprocal inertia force that can complete equilibrium.

The purpose of this utility model is achieved in that

This device is by bent axle and be arranged symmetrically in the crankshaft axis both sides and trunnion shaft A, B that shape is identical form, and it is characterized in that the left and right equilibrium block of the left and right equilibrium block of bent axle and corresponding trunnion shaft A, trunnion shaft B, is stepped construction.

Its preferable embodiment can be crankshaft counter balance is strengthened by crank pin part (inboard) turning radius, Bu Fen the turning radius reduces in the outer part, the turning radius of left and right equilibrium block inboard (by crank pin) that makes bent axle forms ladder-type structure greater than the turning radius in the outside; Simultaneously with the inboard of the equilibrium block of trunnion shaft, the turning radius reduces, and the turning radius in the outside increases, and the turning radius of the left and right equilibrium block inboard of corresponding trunnion shaft A, trunnion shaft B is less than the turning radius in the outside, form opposite ladder-type structure, make stepped mutual dislocation.

If the turning radius of former equilibrium block is R, the width that increases the turning radius respectively accounts for half with the width that reduces the turning radius, increases and the radius increment that reduces is a Δ, and then the matter of equilibrium block has directly increased $[\frac{{(R+\mathrm{\&Delta;})}^3}{{2\mathrm{<figure-callout\; id="3"\; label="R"\; filenames="Y0327938100051.png"\; state="\{\{state\}\}">R</figure-callout>}}^3}+\frac{{(R-\mathrm{\&Delta;})}^3}{{2R}^3}-1]\&times;100\%=\frac{{3\mathrm{\&Delta;}}^2}{{\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="Y0327938100051.png"\; state="\{\{state\}\}">R</figure-callout>}}^2}\&times;100\%,$ The size of the roomy ratio that Δ and radius increase depends on the size of rotating inertia force and one-level reciprocal inertia force and the restriction of structure.

After the utility model has the advantages that the employing such scheme, the turning radius that has solved the equilibrium block of bent axle and trunnion shaft in the diesel engine of present 1125～1130 series is because the restriction of structure, existing balanced controls have been difficult to satisfy the difficulty of the balance of rotating inertia force and one-level reciprocal inertia force, make the rotating inertia force and the one-level reciprocal inertia force energy complete equilibrium of the diesel engine of 1125～1130 series, improved the balance quality of complete machine, and still use integral one-piece crankshaft, reduced manufacture cost, improved the reliability of complete machine, can satisfy the requirement of more users, its economic benefit and social benefit are good, the utility model also can be widely used in other serial single cylinder diesels, economic benefit is very remarkable, and vast market prospect is arranged.

Description of drawings

Concrete structure of the present utility model is provided by the following drawings and example:

Fig. 1 is an axle side schematic representation of the present utility model

1. the right equilibrium block of bent axle 2. crank pins 3. bent axles left sides equilibrium block 4. bent axles

5. the right equilibrium block of trunnion shaft A 6. trunnion shaft B 7. trunnion shafves left sides equilibrium block 8. trunnion shafves

Embodiment

Now in conjunction with the accompanying drawings an embodiment's of the present utility model structure is described in detail:

As shown in Figure 1: the utility model is made up of improved bent axle (1), trunnion shaft A (5), trunnion shaft B (6).Trunnion shaft A (5) is identical with trunnion shaft B (6) shape, symmetric arrangement and bent axle (1) center line both sides.Fig. 1 position is when top dead center, and the left and right equilibrium block of bent axle (3), (4) are downward, and the left and right equilibrium block (7) of trunnion shaft A, B, (8) are upwards.The turning radius of the left and right equilibrium block (3) of bent axle, (4) inboard (by crank pin 2) forms ladder-type structure greater than the turning radius in the outside; The turning radius of the left and right equilibrium block (7) of corresponding trunnion shaft A (5), trunnion shaft B (6), (8) inboard forms opposite ladder-type structure less than the turning radius in the outside.

Present embodiment only is used to illustrate the utility model, and does not limit.

Claims (2)

1. the balanced controls of single cylinder diesel, by bent axle and be arranged symmetrically in the crankshaft axis both sides and trunnion shaft (A, B) that shape is identical is formed, it is characterized in that the left and right equilibrium block of left and right equilibrium block of bent axle and corresponding trunnion shaft (A, B), be stepped construction.

2. the balanced controls of single cylinder diesel according to claim 1 is characterized in that the turning radius of the turning radius of the left equilibrium block (3) of bent axle (1), right equilibrium block (4) inboard greater than the outside, form ladder-type structure; The turning radius of corresponding trunnion shaft A (5), the left equilibrium block (7) of trunnion shaft B (6), right equilibrium block (8) inboard forms opposite ladder-type structure less than the turning radius in the outside, makes stepped mutual dislocation.

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