CN211493535U

CN211493535U - Automobile front axle with casting structure connected with protective sleeve in casting mode

Info

Publication number: CN211493535U
Application number: CN201922112195.XU
Authority: CN
Inventors: 陈学福; 何伟; 何必强
Original assignee: Nanping Jianyang Auto Press Forging Factory
Current assignee: Fujian Tiechima Light Axle Co ltd
Priority date: 2019-07-20
Filing date: 2019-12-01
Publication date: 2020-09-15
Anticipated expiration: 2029-12-01
Also published as: CN212219795U

Abstract

The utility model relates to a casting is connected with car front axle of casting structure of lag, including horizontal pole and two cantilevers, horizontal pole and cantilever are the casting structure, the both ends of horizontal pole respectively are equipped with a frame supporting part, two of horizontal pole respectively are connected with a cantilever, cantilever and horizontal pole integrated into one piece are in the same place, the cantilever is equipped with the king pin hole, the axis of king pin hole has both leaned towards the centre of horizontal pole and the rear slope of horizontal pole, it is equipped with the lag to logout downthehole, the lag with the cantilever casting is in the same place. The utility model provides a casting that king-pin hole is difficult to wearing and tearing when using is connected with the automobile front axle of the casting structure of lag, has solved the problem that is easily worn and torn when the king-pin hole of the automobile front axle of current casting structure uses.

Description

Automobile front axle with casting structure connected with protective sleeve in casting mode

Technical Field

The utility model relates to an automobile front axle especially relates to a casting is connected with automobile front axle of the casting structure of lag.

Background

The front axle of the automobile is also called front axle, which is used for installing front wheels and supporting the weight of the front part of the automobile and is connected with the frame by a front suspension bracket. A front axle of an automobile with a conventional structure is disclosed in chinese patent application No. 2011201792654, which is entitled "front axle assembly of an automobile" with publication date of 2011, 12 and 28. The automobile front axle comprises a cross rod and two cantilevers, a frame supporting part is arranged at each of two ends of the cross rod, the two cantilevers are connected with each of the two cross rods, and main pin holes are formed in the cantilevers. When the front wheel steering device is used, the steering knuckle is arranged in the main pin hole in a penetrating mode through the main pin and connected with the front shaft, and the front wheel is installed on the steering knuckle. The original automotive front axle suffers from the following disadvantages: the cross rod and the cantilever are of split structures and are connected together in a welding mode, so that the position between the cantilever and the cross rod is easy to deviate and not meet the requirement, and the yield is low; the steering member is easy to collide with the cantilever, and in order to prevent the cantilever from deforming when the cantilever is collided, the cantilever needs to be made thicker in order to pass through the shock resistance, so that the weight of the vehicle is increased, and the fuel consumption is increased; for the improvement of the company, the automobile front axle with a flat bottom casting structure is designed; however, the axle with the cast structure has the following defects: the king pin holes are susceptible to wear resulting in scrapping of the front axle.

SUMMERY OF THE UTILITY MODEL

The utility model provides a king pin hole is difficult to be connected with the automobile front axle of the casting structure of lag by the casting of wearing and tearing during use, has solved the problem of being easily worn and torn when the king pin hole of the automobile front axle of current casting structure uses.

The technical problem is solved by the following technical scheme: the utility model provides a casting is connected with car front axle of casting structure of lag, includes horizontal pole and two cantilevers, horizontal pole and cantilever are the casting structure, the both ends of horizontal pole respectively are equipped with a frame supporting part, two of horizontal pole respectively are connected with a cantilever, cantilever and horizontal pole integrated into one piece are in the same place, the cantilever is equipped with the king pin hole, the axis of king pin hole both inclines towards the centre of horizontal pole and inclines towards the rear of horizontal pole again, its characterized in that, be equipped with the lag in the king pin hole, the lag with the cantilever casting is in the same place. The protective sleeve is arranged in the main pin hole, and is worn when worn, and the wear can be avoided by ensuring the surface hardness protection requirement of the protective sleeve, so that the problem that the main pin hole of the front axle of the cast structure is easily worn is solved; the protective sleeve and the cantilever are cast together, so that the protective sleeve can be prevented from losing the protective effect on the main pin hole due to the fact that the protective sleeve rotates along with the main pin of the steering knuckle, and the reliability is good; due to the existence of the protective sleeve, a sand core of the main pin hole is not required to be formed in the casting process, and the effect of reducing the using amount of the sand is achieved.

Preferably, the hardness of the protective sleeve is greater than the hardness of the cantilever.

Preferably, the peripheral surfaces of the two ends of the protective sleeve are provided with a plurality of anti-slip teeth distributed along the circumferential direction of the protective sleeve, the anti-slip teeth are cast in the cantilever, and the anti-slip teeth are exposed out of the cantilever. The reliability of the connection between the protective sleeve and the cantilever can be ensured. The lag can also play the effect that improves the wear-resisting effect of preventing of king pin hole axial both ends.

Preferably, the anti-slip tooth protrudes out of the cantilever, and the end face of the anti-slip tooth, which is far away from one end of the cantilever, is located on the same plane with the end face of the protective sleeve. The two axial ends of the main pin hole can be prevented from being abraded.

Preferably, an outer dimension of the frame support portion in the front-rear direction is larger than an outer dimension of the cross bar in the front-rear direction.

Preferably, the lower surface of the cross rod is a plane, and the front surface and the rear surface of the cantilever are respectively provided with a steering protection block.

Preferably, the two ends of the protecting sleeve are provided with large-diameter sections, and a supporting step is formed between each large-diameter section and the protecting sleeve. In the casting process, support through the closing cap and seal the lag on supporting the step, prevent that casting process from getting into the inside inner peripheral surface that harms the lag at lag inside such as sand.

Preferably, the surface hardness of the inner peripheral surface of the shield is 49 to 57 HRC.

The utility model has the advantages of that: the protective sleeve is arranged in the main pin hole, and is worn when worn, and the wear can be avoided by ensuring the surface hardness protection requirement of the protective sleeve, so that the problem that the main pin hole of the front axle of the cast structure is easily worn is solved; the protective sleeve and the cantilever are cast together, so that the protective sleeve can be prevented from rotating along with the main pin of the steering knuckle, the protective effect of the protective sleeve on the main pin hole is avoided, and the reliability is good.

Drawings

Fig. 1 is a schematic view of the present invention.

Fig. 2 is a partially enlarged schematic view of the kingpin hole of fig. 1.

Fig. 3 is a schematic view of the kingpin hole projected in the direction B of fig. 1.

In the figure: the frame comprises a cross rod 1, a cantilever 2, a frame supporting part 3, a main pin hole 4, a protecting sleeve 5, a release-preventing tooth 6, an end face 7 of the release-preventing tooth far away from one end of the cantilever, an end face 8 of the protecting sleeve, a lower surface 9 of the cross rod, a steering block 10, a large-diameter section 11 and a supporting step 12.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1, 2 and 3, a front axle of an automobile with a cast structure having a boot attached thereto by casting includes a cross bar 1 and two suspension arms 2. The cross bar and the cantilever are of cast structure. The cantilever and the cross bar are integrally formed together. Both ends of the cross bar are respectively provided with a frame support part 3. The external dimension of the frame support part along the front-back direction is larger than that of the cross rod along the front-back direction. Two of the cross bars are connected with a cantilever respectively. The cantilever is provided with a king pin hole 4. The axis of the king pin hole is inclined both towards the middle of the cross bar and towards the rear of the cross bar. A protecting sleeve 5 is arranged in the main pin hole. The hardness of the protective sleeve is greater than that of the cantilever. The protective sleeve is cast with the cantilever. The surface hardness of the inner peripheral surface of the protective sleeve is 49-57 HRC. The outer peripheral face at the two ends of the protective sleeve is provided with a plurality of anti-disengaging teeth 6 distributed along the circumferential direction of the protective sleeve. The anti-slip teeth are cast in the cantilever. The slip-preventing teeth are exposed out of the cantilever. The anti-slip tooth protrudes out of the cantilever. The end face 7 of the end of the anti-disengaging tooth, which is far away from the cantilever, and the end face 8 of the protective sleeve are positioned on the same plane. The lower surface 9 of the crossbar is planar. The front and rear surfaces of the boom are each provided with a steering block 10. The two ends of the protective sleeve are provided with large-diameter sections 11. A support step 12 is formed between the large diameter section and the boot. The support step is positioned on the inner circumferential surface of the protective sleeve.

Claims

1. The utility model provides a casting is connected with car front axle of casting structure of lag, includes horizontal pole and two cantilevers, horizontal pole and cantilever are the casting structure, the both ends of horizontal pole respectively are equipped with a frame supporting part, two of horizontal pole respectively are connected with a cantilever, cantilever and horizontal pole integrated into one piece are in the same place, the cantilever is equipped with the king pin hole, the axis of king pin hole both inclines towards the centre of horizontal pole and inclines towards the rear of horizontal pole again, its characterized in that, be equipped with the lag in the king pin hole, the lag with the cantilever casting is in the same place.

2. The automobile front axle with the casting structure of the protective sleeve connected in the casting manner as claimed in claim 1, wherein a plurality of anti-slip teeth are arranged on the outer peripheral surfaces of two ends of the protective sleeve and distributed along the circumferential direction of the protective sleeve, the anti-slip teeth are cast in the cantilever, and the anti-slip teeth are exposed out of the cantilever.

3. The cast automotive front axle with a protective cover attached thereto as claimed in claim 2, wherein said anti-release teeth protrude from said arm, and an end surface of said anti-release teeth, said end surface being distal from said arm, is coplanar with an end surface of said protective cover.

4. A cast automotive front axle with a protective cover attached thereto according to claim 1, 2 or 3, characterised in that the protective cover is provided with large diameter sections at both ends thereof, the large diameter sections forming a supporting step with the protective cover.

5. A cast automotive front axle with a protective cover attached thereto according to claim 1, 2 or 3, characterised in that the surface hardness of the inner circumferential surface of the protective cover is 49-57 HRC.