CN202144753U

CN202144753U - Assembled rocker arm of novel engine

Info

Publication number: CN202144753U
Application number: CN201120164710U
Authority: CN
Inventors: 刘和义; 黄国媛
Original assignee: SAIC Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2011-05-23
Filing date: 2011-05-23
Publication date: 2012-02-15
Anticipated expiration: 2021-05-23

Abstract

The utility model discloses an assembled rocker arm of a novel engine, comprising two two-stage rocker arms which are respectively arranged at two sides of a pull arm at a valve lift control mechanism of an engine, and an intermediate shaft which is penetrated through the two two-stage rocker arms and the pull arm, wherein the intermediate shaft is supported on the pull arm, a support part is provided with a needle roller bearing II, a connection end between the two-stage rocker arms and a cam on an engine cam shaft is provided with a needle roller bearing I, and a needle roller II is arranged in a hole which is matched with the intermediate shaft on each two-stage rocker arm. After the technical scheme is adopted, the needle roller is arranged at a part which is contacted with the intermediate shaft at each two-stage rocker arm, and sliding friction is replaced by rolling friction, so that the friction loss of a system can be further reduced, the fuel oil economical efficiency of the engine can be improved, the axial orientation of the assembled rocker arm can be preferably realized due to the axial limitation, and the reliability of the system can be improved.

Description

A kind of new work engine combination rocking arm

Technical field

The utility model relates to engine valve actuating mechanism, and specifically, the utility model relates to a kind of new work engine combination rocking arm.

Background technique

Along with the Abgasgesetz of the soaring and increasingly stringent of oil price, lowly pollute, low oil consumption, high-power, motor high pulling torque be exactly motor engineer's design object.A kind of combination rocking arm is disclosed in publication number is the patent of invention " a kind of valve lift control mechanism of realizing step-less adjustment " of CN107539042A; This combination rocking arm can have very big influence to the frictional work of whole motor because of friction pair is more; Thereby influence the fuel economy of motor complete machine; Make up pitman arm shaft simultaneously to can not realizing good location, the reliability of system is had adverse influence.

The model utility content

The utility model technical problem to be solved provides a kind of new work engine combination rocking arm, with the frictional loss of further reduction motor, improves the fuel economy of motor.

In order to solve the problems of the technologies described above; The technological scheme that the utility model adopted is: a kind of new work engine combination rocking arm; Comprise two secondary rocking arms of the torque arm both sides that are located at the engine air valve lift control mechanism respectively and the central shaft that passes two secondary rocking arms and torque arm; Said central shaft is supported in the said torque arm; And being provided with needle bearing II at support zone, the end that is connected with cam on the engine cam at said secondary rocking arm is provided with needle bearing I, on said secondary rocking arm with in the hole that central shaft cooperates, is provided with needle roller II.

On said central shaft, be provided with pad and back-up ring to said needle roller II1 axially locating.

Be provided with thrust surface to said secondary rocking arm axially locating in the both sides of said torque arm.

Between two thrust surfaces of said torque arm, be provided with guide pad, said guide pad is sleeved on the said needle bearing II.

The utility model adopts technique scheme; Position through contacting with central shaft at the secondary rocking arm is provided with needle roller, replaces sliding friction with rolling friction, can further reduce the frictional loss of system; Improve the fuel economy of motor; Through axial spacing, make the combination pitman arm shaft to realizing well location, can improve the reliability of system.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the structural representation of torque arm in the utility model;

Fig. 3 is the structural representation of two secondary rocking arms of the utility model;

Fig. 4 is the structural representation of the central shaft of the utility model;

Mark among the above-mentioned figure is: 1, torque arm; 2, secondary rocking arm; 3, needle bearing I; 4, bearing pin; 5, central shaft; 6, guide pad; 7, pad; 8, needle bearing II; 9, needle roller I; 10, needle roller II; 11, thrust surface; 12, back-up ring.

Embodiment

Like Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, a kind of new work engine combination of the utility model rocking arm comprises two secondary rocking arms 2 of torque arm 1 both sides that are located at the engine air valve lift control mechanism respectively and passes two secondary rocking arms 2 and the central shaft 5 of torque arm 1; Couple together two secondary rocking arms 2 and torque arm 1 through idler axle; Central shaft 5 is supported in the torque arm 1, and is provided with needle bearing II8 at support zone, is provided with needle roller I 9 in the needle bearing II8; The end that is connected with cam on the engine cam at secondary rocking arm 2 is provided with needle bearing I 3; Bearing pin 4 is housed on the secondary rocking arm 2, is used for fixing needle bearing I 3 on secondary rocking arm 2, be provided with needle roller II10 in the hole that on secondary rocking arm 2, cooperates with central shaft 5; Adopt this kind structure; Replace sliding friction with rolling friction, can further reduce the frictional loss of system, improve the fuel economy of motor.In order to guarantee the axially locating of secondary rocking arm 2; Being designed with thrust surface 11 in the both sides of torque arm 1 cooperates guide pad 6 can guarantee axial location; Thereby can improve the reliability of system, guide pad 6 and is sleeved on the needle bearing II8 between two thrust surfaces 11 of torque arm 1.On central shaft 5, also be provided with pad 7 and back-up ring 12 to needle roller II10 axially locating, the axial limiting through the needle roller II10 in the hole of pad 7 and two secondary rocking arms 2 of back-up ring 12 assurances improves the reliability of combination rocking arm work.

Combine accompanying drawing that the utility model has been carried out exemplary description above; Obviously the concrete realization of the utility model does not receive the restriction of aforesaid way; As long as adopted the method design of the utility model and the improvement of the various unsubstantialities that technological scheme is carried out; Or the design of the utility model and technological scheme are directly applied to other occasion without improving, all within the protection domain of the utility model.

Claims

1. a new work engine makes up rocking arm; Comprise two secondary rocking arms (2) of torque arm (1) both sides that are located at the engine air valve lift control mechanism respectively and pass two secondary rocking arms (2) and the central shaft (5) of torque arm (1); Said central shaft (5) is supported in the said torque arm (1); And be provided with needle bearing II (8) at support zone; The end that is connected with cam on the engine cam at said secondary rocking arm (2) is provided with needle bearing I (3), it is characterized in that: in the hole that said secondary rocking arm (2) is gone up with central shaft (5) cooperates, be provided with needle roller II (10).

2. new work engine combination rocking arm according to claim 1 is characterized in that: on said central shaft (5), be provided with pad (7) and back-up ring (12) to said needle roller II (10) axially locating.

3. new work engine combination rocking arm according to claim 1 and 2 is characterized in that: be provided with the thrust surface (11) to said secondary rocking arm (2) axially locating in the both sides of said torque arm (1).

4. new work engine combination rocking arm according to claim 3, it is characterized in that: between two thrust surfaces (11) of said torque arm (1), be provided with guide pad (6), said guide pad (6) is sleeved on the said needle bearing II (8).