CN201132547Y

CN201132547Y - Steering lever

Info

Publication number: CN201132547Y
Application number: CNU2007200744110U
Authority: CN
Inventors: 王沈超; 惠华
Original assignee: Shanghai Waigaoqiao Shipbuilding Co Ltd
Current assignee: Shanghai Waigaoqiao Shipbuilding Co Ltd
Priority date: 2007-09-05
Filing date: 2007-09-05
Publication date: 2008-10-15
Anticipated expiration: 2017-09-05

Abstract

The utility model provides a steering rocker, which includes a horizontal rocker, a cast-iron shaft sleeve connected with the horizontal rocker, and a copper shaft sleeve which is arranged inside the cast-iron shaft sleeve and is in interference fit with the cast-iron shaft sleeve; an oil discharging groove is arranged on the inner side face of the copper shaft sleeve. The oil discharging groove on the inner side of the shaft sleeve of the utility model ensures that lubricating oil can be discharged in time, and prevents the shaft sleeve and the steering shaft from being pressed and broken during relative rotation. The shaft sleeve is welded on the horizontal rocker, and a reinforcing board is added on the joint of the shaft sleeve and the rocker, therefore, the bearing strength of the steering rocker is improved; the improvement of the strength of the steering rocker further prolongs the service life thereof, ensures the normal production, and saves the cost for the factory.

Description

Pitman arm

Technical field

The utility model relates to a kind of pitman arm, particularly relates to the pitman arm that uses on the iant flat truck of transportation body section.

Background technology

In the shipbuilding field, often need the transportation body section to assemble or other operation.And domestic shipyard generally all is to transport with the large hydraulic flat truck because the volume of segmentation is very big, so be subjected to the restriction in place, workshop, need be installed on the flat truck the pitman arm controlling party to.On the pitman arm and between flat truck bonded assembly axle sleeve and the flat truck steering shaft lubricating oil is arranged, but this mode exists following problem: 1, the frequent use of rocking arm makes lubricating oil ineffective, but can't in time be discharged, influenced the relative rotation between steering shaft and the axle sleeve on the contrary; 2, it is huge to add segmentation weight, nearly 230 tons of general segmentations, and huge load is being born in steering shaft and axle sleeve junction.So above-mentioned two reasons integrate, just cause the axle sleeve of pitman arm frequently to be pushed and reverse easily, and then fracture.

And after the axle sleeve fracture, need whole pitman arm be changed or keep in repair, this has just brought the influence of two aspects to the production of factory:

1, from rocking arm to buy installation period longer, generally need to have postponed the carrying out of subsequent handling about 3 months, influenced ordinary production, reduced work efficiency;

2, the price of each rocking arm is about 30,000 yuan, and the frequent replacing of rocking arm has also increased productive costs.

The utility model content

The purpose of this utility model provides a kind ofly can discharge lubricating oil and the high pitman arm of loading strength.

The purpose of this utility model is achieved through the following technical solutions:

A kind of pitman arm, it comprises a horizontal rocking arm, a coupled cast iron axle sleeve, and be positioned at that this cast iron axle sleeve is inner to be the copper bush of interference fit with it, its characteristics are, have the groove of draining the oil on this copper bush medial surface.

Wherein, this cast iron axle sleeve is for being welded on this horizontal rocking arm.

Wherein, this cast iron axle sleeve and this horizontal rocking arm junction are welded with a brace panel.

Positive progressive effect of the present utility model is:

1, the groove of draining the oil of axle sleeve inboard is in time discharged lubricating oil, is squeezed when having prevented that axle sleeve is relative with steering shaft and rotating and ruptures;

2, axle sleeve is welded on the horizontal rocking arm, and both junctions have increased brace panel, has improved the loading strength of pitman arm;

3, the raising of pitman arm intensity, and then increased its service life, guaranteed normal production, for factory provides cost savings.

Description of drawings

Fig. 1 is the structural representation of the utility model preferred embodiment.

Fig. 2 is the scheme drawing after the copper bush medial surface among Fig. 1 launches fully.

The specific embodiment

Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.

As shown in Figure 1.One cast iron axle sleeve 3 is welded on the horizontal rocking arm 1, and being embedded with between a copper bush 4, two axle sleeves in this cast iron axle sleeve 3 is interference fit.Position, right angle in that the junction of this horizontal rocking arm 1 and cast iron axle sleeve 3 forms is welded with a brace panel 2.The toughness and the degree of finish of copper bush 4 are relatively good, and friction is little relatively during the portion's rotation within it of the steering shaft on the flat truck.Medial surface at this copper bush 4 has the groove 5 of draining the oil, and just because of the existence of this groove 5 of draining the oil, makes ineffective lubricating oil be able to timely discharge.The shape of this groove 5 of draining the oil as shown in Figure 2, rectangle is the shape after copper bush 4 medial surfaces launch fully among the figure, and is the groove 5 of draining the oil along its cornerwise groove.

The utility model is not limited to above-mentioned embodiment, such as, the shape of the groove of draining the oil also can not make the shape among Fig. 2, and replaces or the like with other shape.

Claims

1, a kind of pitman arm, it comprises a horizontal rocking arm, a coupled cast iron axle sleeve, and one be positioned at this cast iron axle sleeve inner with its for the copper bush of interference fit, it is characterized in that, have the groove of draining the oil on this copper bush medial surface.

2, pitman arm as claimed in claim 1 is characterized in that, this cast iron axle sleeve is for being welded on this horizontal rocking arm.

3, pitman arm as claimed in claim 1 or 2 is characterized in that, this cast iron axle sleeve and this horizontal rocking arm junction are welded with a brace panel.