CN205805704U - A kind of electromotor PTO - Google Patents

Abstract

The utility model patent discloses a power output device for an engine, comprising: a crankshaft, one end of the crankshaft is connected with the engine, and the other end is connected with the flywheel, which bears the force transmitted from the engine end and converts it into torque output to the flywheel The power take-off shaft, one end is installed on the flywheel, and the other end is connected to the rear pulley, and is used to transmit the torque stored in the flywheel to the rear pulley; the rolling bearing is installed on the power take-off shaft, and supports the rear pulley The tray is used to transfer the pulling force that is brought to the rear pulley by the belt on the rear pulley and transmitted to the crankshaft through the power output shaft to the rear tray. The utility model relieves the force of the belt acting on the crankshaft, prevents the eccentric wear of the main bearing bush, and further slows down the damage of the main bearing seat caused by the serious eccentric wear of the main bearing bush, which leads to the damage of the crankshaft. Improve the life of the main bearing bush, protect the main bearing seat and crankshaft, prolong its service life, reduce production costs, and simplify maintenance procedures.

Description

A power output device for an engine

technical field

The utility model relates to the technical field of diesel engines, in particular to a power output device for engines.

Background technique

The power output device is mainly a mechanism that outputs the power of the engine to the special equipment on the special vehicle.

At present, the power output device used on the engine and the belt power output form at the flywheel end are generally transmitted to other devices by belt transmission. This form is widely used in fields such as corn harvesters, construction machinery, and marine machinery. The usual method is to directly fix the pulley at the end of the existing flywheel on the flywheel. Since the flywheel is fixed on the crankshaft, when the power is output by the belt on the pulley, the belt will generate a certain pulling force on the pulley, and this pulling force will pass through the flywheel. passed to the spindle. Once the tension of the belt is too large or it is in a rotating state for a long time, it will increase the tension on the main shaft, which often leads to eccentric wear of the main bearing bush, thereby reducing the service life of the main bearing bush. Furthermore, when the eccentric wear of the main bearing bush reaches the limit, it will cause the crankshaft to loosen, the main bearing seat will be damaged, and finally the crankshaft will be damaged, resulting in adverse consequences.

Utility model content

The purpose of this utility model is to provide a power output device for an engine, which overcomes the deficiencies of the prior art, can slow down the force of the belt acting on the crankshaft, prevent the eccentric wear of the main bearing bush, and effectively slow down the serious eccentric wear of the main bearing bush. The main bearing housing is damaged, resulting in damage to the crankshaft. It can improve the service life of the main bearing bush, protect the main bearing housing and the crankshaft, prolong its service life, reduce the production cost more optimally, and simplify the maintenance procedure.

The technical scheme provided by the utility model is as follows:

A power output device for an engine, comprising:

Crankshaft, one end of the crankshaft is connected to the engine, and the other end is connected to the flywheel, which bears the force from the engine end and converts it into torque and outputs it to the flywheel;

A power take-off shaft, one end is installed on the flywheel, and the other end is connected to the rear pulley for transmitting the torque stored by the flywheel to the rear pulley;

The rolling bearing is installed on the PTO shaft and supports the rear tray, and transfers the pulling force that is brought to the rear pulley by the belt on the rear pulley and transmitted to the crankshaft through the PTO shaft to the rear on the tray.

Because in the prior art, the pulley of the flywheel end of the engine is directly fixed on the flywheel, and the flywheel is fixed on the crankshaft, the tension that the belt on the pulley reacts on the pulley during work can be transmitted to the main shaft by the flywheel. When the pull force of the belt is too large or the pull force is applied to the main shaft for a long time, it will often lead to eccentric wear of the main bearing bush, thereby reducing the life of the main bearing bearing. When the eccentric wear of the main bearing bush is serious, the crankshaft is fixed unstable, which leads to damage to the main bearing housing, and finally leads to damage to the crankshaft, resulting in adverse consequences. In the utility model, on the basis of the power output device at the flywheel end of the original engine, a power output shaft, a rear tray, and a rolling bearing are added to transfer the pulling force of the original crankshaft to the flywheel shell, thereby avoiding partial friction of the main bearing bush; Protects main bearing housings and crankshafts and prolongs their service life.

Further preferably, the power transmission contact surface between the power output shaft and the rear pulley is a tapered surface.

In the utility model, the power transmission contact surface between the power output shaft and the rear pulley is a tapered surface, which changes the force direction of the pull force of the rear pulley belt acting on the power output shaft, thereby reducing the belt transmission on the rear pulley. to the pull on the PTO shaft. It not only protects the power output shaft from the deviation caused by excessive pulling force, but also protects the eccentric wear of other parts in the process of pulling force transmission.

Further preferably, the rear tray is disc-shaped, and one side is fixedly installed with the flywheel housing, and the other side is radially distributed with centrally symmetrical reinforcing ribs; the flywheel housing is fixedly connected with the engine body.

In the utility model, since the rear tray is fixedly installed with the flywheel housing, and the flywheel housing is fixedly connected with the engine body, therefore, the pulling force of the belt on the rear pulley originally received by the crankshaft is converted into a pull force through the power output shaft, the rolling bearing, and the rear tray. , the transmission of the flywheel housing, and finally transferred to the engine body. Thus avoiding the partial friction of the main bearing bush; further protecting the main bearing housing and the crankshaft and prolonging its service life. On the other hand, the side of the rear pulley facing away from the flywheel shell is radially distributed with centrally symmetrical reinforcing ribs. In this way, when the rear tray is transferred to the flywheel shell, the pulling force of the belt on the pulley is evenly transmitted, and the flywheel shell is reduced due to insufficient force. Possibility of localized damage or misalignment.

Further preferably, the rolling bearing is one of deep groove ball bearings, angular contact bearings, spherical roller bearings, thrust roller bearings and tapered roller bearings.

In the utility model, the rotating bearing not only plays the role of supporting the rear pallet, but also transfers the pulling force of the rear pulley belt which should be received by the crank bearing to the rear pallet after being transmitted to the power output shaft. Thus avoiding the partial friction of the main bearing bush; further protecting the main bearing housing and the crankshaft and prolonging its service life. The production cost of the engine is better reduced, and the maintenance procedure is simplified.

Further preferably, the power output shaft is fixed on the flywheel through flywheel bolts.

Further preferably, the rear pulley is fixed on the power output shaft by bolts.

In the utility model, in order to make the parts on the engine body more compact, firm and stable. The power take-off shaft is fixed on the flywheel by flywheel bolts, and the rear pulley is fixed on the power take-off shaft by bolts. More preferably, sealing rings can be added between the flywheel bolts and the flywheel, between the bolts and the power output shaft, to further ensure the sealing performance between the parts on the engine body.

A power output device for an engine provided by the utility model can bring at least one of the following beneficial effects:

1. In this utility model, a power output shaft, a rear tray, and a rolling bearing are added on the basis of the power output device at the flywheel end of the original engine, and the pulling force received by the original crankshaft is transferred to the flywheel housing through the power output shaft and the rolling bearing, and the flywheel housing It is fixed on the engine body, and there is no relative movement between the two, so most of the pulling force will be absorbed by the engine body, thereby avoiding partial friction of the main bearing bush. The possibility of damage to the main bearing seat is reduced, and the life of the main bearing seat is extended. Reduce the influence of the pulley pull on the crankshaft and increase the service life of the crankshaft. The production cost of the engine is better reduced, and the maintenance procedure is simplified.

2. In the utility model, the power transmission contact surface between the power output shaft and the rear pulley is a tapered surface, which changes the force direction of the pull force of the rear pulley belt acting on the power output shaft, thereby reducing the tension of the belt on the rear pulley. Pull force transmitted to the PTO shaft. It not only protects the power output shaft from the deviation caused by excessive pulling force, but also protects the eccentric wear of other parts in the process of pulling force transmission.

3. In the utility model, the rear tray is in the shape of a disc, and one side is fixedly installed with the flywheel housing, and the other side is radially distributed with centrally symmetrical reinforcing ribs. In this way, the pull force of the belt on the rear pulley is evenly transmitted from the rear tray to the flywheel housing, reducing the possibility of partial damage or deviation of the flywheel housing due to uneven force.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

Fig. 1 is a partial sectional structure schematic diagram of the utility model;

Explanation of reference numbers:

1. Crankshaft, 2. Flywheel, 3. Rear tray, 4. Rolling bearing, 5. PTO shaft, 6. Rear pulley, 7. Flywheel housing, 8. Bolt.

detailed description

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

As a specific embodiment, as shown in Figure 1, a power output device for an engine includes: a crankshaft 1, one end is connected to the engine (not shown in the figure), and the other end is connected to the flywheel 2; a power output shaft 5 is installed at one end On the flywheel 2, the other end is connected with the rear pulley 6; the rolling bearing 4 is installed on the power output shaft 5 and supports the power rear tray 3.

In the prior art, the pulley at the flywheel end of the engine is directly fixed on the flywheel, and the flywheel is fixed on the crankshaft. The pulling force that the belt on the pulley reacts on the pulley during work will be transmitted to the main shaft through the flywheel. When the pull force of the belt is too large or the pull force is applied to the main shaft for a long time, it will often lead to eccentric wear of the main bearing bush, thereby reducing the life of the main bearing bearing. When the eccentric wear of the main bearing bush is serious, the crankshaft is fixed unstable, which leads to damage to the main bearing housing, and finally leads to damage to the crankshaft, resulting in adverse consequences. In the utility model, on the basis of the power output device at the flywheel end of the original engine, a power output shaft, a rear tray, and a rolling bearing are added to transfer the pulling force of the original crankshaft to the flywheel shell, thereby avoiding partial friction of the main bearing bush; Protects main bearing housings and crankshafts and prolongs their service life.

In the actual installation process, the central axes of crankshaft 1, flywheel 2, rear tray 3, rolling bearing 4, power output shaft 5, and rear pulley 6 are all on a horizontal line.

In the utility model, the power transmission contact surface of the power output shaft 5 and the rear pulley 6 is further set to a tapered surface, so that the power output shaft 5 is subjected to the tension of the belt (not shown in the figure) on the rear pulley 6 like this. The acting surface is a tapered surface, which changes the force direction of the power output shaft 5, and reduces the pulling force transmitted from the belt on the rear pulley 6 to the power output shaft 5 according to the principle of force synthesis. In this way, the power output shaft 5 is protected from being deviated due to excessive pulling force, and then the pulling force of the rear pulley 6 belt acts on the size of other parts, and the deviation of other parts in the pulling force transmission process is protected. grind.

In the embodiment of the present utility model, the rear tray 3 is further arranged in a disc shape, and one side is fixedly installed with the flywheel housing 7, and the other side is radially distributed with centrally symmetrical reinforcing ribs (not marked in the figure); further The flywheel housing 7 is fixedly connected with the engine body (not shown in the figure). The pulling force of the belt on the rear pulley 6 originally borne by the crankshaft 1 is converted into transmission by the power output shaft 5, rolling bearing 4, rear tray 3, flywheel housing 7, and finally transferred to the engine body. Thereby avoiding the partial friction of the main bearing bush; furthermore, the main bearing seat and the crankshaft 1 are protected, and the service life thereof is prolonged. On the other hand, the side of the rear pulley 6 facing away from the flywheel housing 7 is radially distributed with center-symmetric reinforcing ribs. In this way, the rear tray 3 transmits evenly the pulling force of the belt on the rear pulley 6 to the flywheel housing 7, reducing the flywheel housing. 7 Possibility of local damage or deviation due to uneven force. The logarithm and position of the ribs can be set according to the actual situation. As in this embodiment, the rear tray 3 is provided with 12 radially distributed reinforcing ribs, so that the pulling force that reacts on the pulley 6 when the belt on the rear pulley 6 is working will be transferred through the power output shaft 5 and the rolling bearing 4 On the rear tray 3, the rear tray 3 can evenly transmit the pulling force to the flywheel housing 7. Flywheel housing 7 transmits the suffered pulling force of itself to the engine body. Thereby slowing down or counteracting the pulling force that the crankshaft 1 is subjected to, preventing the eccentric wear of the main bearing bush, improving the service life of the main bearing bush, thereby protecting the main bearing housing and the crankshaft 1, and prolonging their service life. The structure is simple, the reliability is strong, and the protection effect on the relevant components on the crankshaft 1 of the engine is obvious.

In the present utility model, the rolling bearing 4 is further set as one of deep groove ball bearings, angular contact bearings, self-aligning roller bearings, thrust roller bearings and tapered roller bearings. Wherein, in this embodiment, the rolling bearing is a deep groove ball bearing. The rotating bearing not only plays the role of supporting the rear pallet 3, but also transfers the pulling force of the rear pulley 6 belt that should be borne by the crankshaft 1 to the rear pallet 3 after being transmitted to the power output shaft 5. Thereby avoiding the partial friction of the main bearing bush; furthermore, the main bearing seat and the crankshaft 1 are protected, and the service life thereof is prolonged. The production cost of the engine is better reduced, and the maintenance procedure is simplified.

In the embodiment of the utility model, in the utility model, in order to make the parts on the engine body more compact, firm and stable. Further, the power output shaft 5 is fixed on the flywheel 2 by flywheel bolts (not shown in the figure). Further, the rear pulley 6 is fixed on the power output shaft 5 by bolts 8 .

In the present utility model, in order to further fasten the connecting parts or strengthen the sealing between parts, corresponding gaskets (not shown in the figure) or sealing rings (not shown in the figure) can be added where necessary. As in this embodiment, it is better to add sealing rings between the flywheel bolts and the flywheel 2, between the bolts 8 and the power output shaft 5, to further ensure the sealing performance between the parts on the engine body.

It should be noted that the above embodiments can be freely combined as required. The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (5)

1. an electromotor PTO, including:

Bent axle, one end of this bent axle is connected with electromotor, and the other end is connected with flywheel, bears the power that engine end transmits, and will It is changed into torque and exports to flywheel；

It is characterized in that, also include:

Power output shaft, one end is arranged on described flywheel, and belt wheel after other end connection, for the moment of torsion stored by described flywheel It is transferred to rear belt wheel；

Rolling bearing, is arranged on described power output shaft, and supports rear pallet, brings institute by the belt on described rear belt wheel State rear belt wheel and pass to the pulling force of described bent axle by described power output shaft and transfer on rear pallet.

Electromotor PTO the most according to claim 1, it is characterised in that:

Described power output shaft is taper surface with the power transmission contact surface of described rear belt wheel.

Electromotor PTO the most according to claim 1, it is characterised in that:

Described rear pallet is disc, and one side fixedly mounts with bell housing, and another side radial distribution centrosymmetric reinforcement Muscle；Described bell housing is fixing with engine block to be connected.

Electromotor PTO the most according to claim 1, it is characterised in that:

Described rolling bearing is deep groove ball bearing, angular contact bearing, self-aligning roller bearing, thrust roller bearing and taper roller axle One in holding.

5. according to the electromotor PTO described in claim 1-4 any one, it is characterised in that:

Described rear belt wheel is bolted on described power output shaft.