CN202022067U

CN202022067U - Double-rear-axle balance suspension structure

Info

Publication number: CN202022067U
Application number: CN2010206837017U
Authority: CN
Inventors: 程慷慨; 张堃; 魏占芳
Original assignee: Shaanxi Heavy Duty Automobile Co Ltd
Current assignee: Shaanxi Heavy Duty Automobile Co Ltd
Priority date: 2010-12-21
Filing date: 2010-12-21
Publication date: 2011-11-02
Anticipated expiration: 2020-12-21

Abstract

The utility model provides a double-rear-axle balance suspension structure, comprising a pair of helical springs, the lower ends of which are respectively fixed on the axles, and characterized by also comprising a pair of reaping hook shaped swing arms, swing arms each of which consists of a transverse arm and a vertical arm which are respectively swingingly installed on a vehicle frame using the connecting part of two arms as a fulcrum; the transverse arms of the reaping hook shaped arms are respectively in rotatable connection with the upper ends of the helical springs; the vertical arms are in rotatable connection with each other through push rods, and the connection relation should meet the requirements that the swing of any reaping hook shaped swing arm can be transmitted to another reaping hook shaped swing arm through the push rods. The double-rear-axle balance suspension structure of the utility model realizes the load balance of the two axles when a vehicle is running through a lever balance structure composed of the reaping hook shaped swing arms and the push rods, and meanwhile a limit membe is arranged on the reaping hook shaped swing arms and the frame or swing arm seats; the swing angles of the reaping hook shaped swing arms can be limited so as to restrict the wheel travel.

Description

Two back axle balance suspension structures

Technical field

The utility model relates to the suspension frame structure on a kind of automobile, relates in particular to a kind of two back axle balance suspension structures of goods carrying vehicle.

Background technology

It is to utilize the coil spring damping that the two back axles of goods carrying vehicle adopt spiral spring suspension, vibration effect that the reduction vehicle produces lade in uneven road surface travels and the traveling comfort that improves the occupant.At present, the two back axles of goods carrying vehicle integral type adopt the spiral spring suspension structure, and upper bracket of the spring is fixed on the vehicle frame, and each bridge is separate.For the load that satisfies each bridge is close, adopt variable stiffness coil spring etc. more.Design, the manufacture difficulty of spring are bigger.Simultaneously, the reliability of spring is lower.Especially under the vehicle no-load condition, by ditch, it is unsettled that a bridge takes place easily, and the phenomenon that another bridge load is multiplied has influenced the carrying capacity of vehicle.

The utility model content

The purpose of this utility model is, a kind of two back axle balance suspension structures of utilizing the lever balance structure design are provided, and reduces helical spring design, manufacture difficulty, improves the problem of the load distribution inequality of each bridge in the vehicle '.

For achieving the above object, the technical solution adopted in the utility model is: a kind of pair of back axle balance suspension structure, comprise a pair of coil spring, its lower end is fixedly mounted on the vehicle bridge respectively, it is characterized in that, also comprise: a pair of sickleshaped swing arm comprises transverse arm and perpendicular arm respectively, and is that fulcrum is installed on the vehicle frame swingably with two arm junctions respectively; The transverse arm of described sickleshaped swing arm is connected rotationally with helical spring upper end respectively; Connect rotationally by push rod between its perpendicular arm, and annexation to satisfy the swing that makes arbitrary sickleshaped swing arm and can pass to another sickleshaped swing arm by push rod.

Preferably, the sickleshaped swing arm can be installed on the vehicle frame by the bearing pin that is fixedly mounted on the vehicle frame.Simultaneously can also design a swing arm seat and bearing pin is placed the swing arm seat.

Preferably, the triangle that can also establish projection in the sickleshaped swing arm is spacing, establishes corresponding positive stop lug boss on vehicle frame or swing arm seat, and the effect of the pendulum angle of restriction sickleshaped swing arm is played in the cooperation of and positive stop lug boss spacing by triangle.

The lever balance structure that the of the present utility model pair of back axle balance suspension structure formed by sickleshaped swing arm and push rod has realized vehicle two bridge load equalizatioies under steam.Simultaneously, on sickleshaped swing arm and vehicle frame or swing arm seat, spacing design is arranged, the pendulum angle of restriction sickleshaped swing arm, thereby the stroke of realization limiting wheel.

Description of drawings

Fig. 1 is the scheme drawing of the two back axle balance suspension structures of the utility model;

Fig. 2 is the scheme drawing of sickleshaped swing arm in two back axle balance suspension structures;

Fig. 3 is the scheme drawing of swing arm seat in two back axle balance suspension structures;

Wherein,

1-vehicle frame 2-upper bracket 3-swing arm seat 31-positive stop lug boss

The spacing 6-vehicle bridge of 4-push rod 5-sickleshaped swing arm 51-triangle

7-coil spring 8-bearing pin

The specific embodiment

Come the utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 1, be a kind of preferred embodiment of the two back axle balanced structures of the utility model.Among the figure, two back axle balance suspension structures comprise a pair of coil spring 7 and sickleshaped swing arm 5.So-called sickleshaped swing arm is as the term suggests be exactly that its shape is as a reaping hook, also as numeral " 7 ".Sickleshaped swing arm 5 is installed in rotation on the vehicle frame 1 by the bearing pin 8 that is fixedly mounted on the vehicle frame 1, and bearing pin 8 places swing arm seat 3.The shape of swing arm seat 3 as shown in Figure 3, the pin-and-hole in the middle of it can hold bearing pin 8, both sides do not have to block and can hold sickleshaped swing arm 5 and freely swing, the top is provided with the pendulum angle that positive stop lug boss 31 can be used for limiting sickleshaped swing arm 5.In conjunction with Fig. 1, what the left side showed among the figure is the front view of swing arm seat 3 and sickleshaped swing arm 5, and the right demonstration is the cutaway view of swing arm seat 3 and sickleshaped swing arm 5.Wherein positive stop lug boss 31 on the swing arm seat 3 and the triangle in the sickleshaped swing arm 5 spacing 51 cooperates the pendulum angle with restriction sickleshaped swing arm 5.The front view on the contrast left side and the cutaway view on the right in conjunction with Fig. 3, can clearly show the shape and the structure of swing arm seat 3 and positive stop lug boss 31 thereof.

Fig. 2 is the scheme drawing of sickleshaped swing arm 5, and in conjunction with Fig. 1, sickleshaped swing arm 5 is connected with bearing pin 8 rotationally by the pin-and-hole of its transverse arm and perpendicular arm junction.The transverse arm of sickleshaped swing arm 5 is connected rotationally with upper bracket 2, thereby realizes and being rotatably connected of the upper end of coil spring 7.Connect rotationally by push rod 4 between the perpendicular arm of sickleshaped swing arm 5, and annexation to satisfy the swing that makes arbitrary sickleshaped swing arm 5 and can pass to another sickleshaped swing arm 5 by push rod 4.

Its lower end is fixedly mounted on respectively on the vehicle bridge 6, and its upper end is fixed with upper bracket 2.Upper bracket 2 is rotatably connected to the transverse arm of sickleshaped swing arm 5.

In other embodiment of the present utility model, there is not swing arm seat 3, the triangle that projection still will be set on the transverse arm of sickleshaped swing arm 5 is spacing 51, and corresponding positive stop lug boss can be set on vehicle frame 1, cooperates triangle spacing 51 to limit the pendulum angle of sickleshaped swing arm 5.

Aforementioned sickleshaped swing arm 5 is connected with coil spring 7 by this upper bracket 2.

Claims

1. a two back axle balance suspension structure comprises a pair of coil spring, and its lower end is fixedly mounted on respectively on the vehicle bridge, it is characterized in that, also comprises:

A pair of sickleshaped swing arm comprises transverse arm and perpendicular arm respectively, and is that fulcrum is installed on the vehicle frame swingably with two arm junctions respectively;

The transverse arm of described sickleshaped swing arm is connected rotationally with helical spring upper end respectively; Connect rotationally by push rod between its perpendicular arm, and annexation to satisfy the swing that makes arbitrary sickleshaped swing arm and can pass to another sickleshaped swing arm by push rod.

2. as claimed in claim 1 pair of back axle balance suspension structure is characterized in that, it is spacing that the transverse arm of described sickleshaped swing arm is provided with protruding triangle, and described vehicle frame is provided with corresponding positive stop lug boss.

3. as claimed in claim 1 pair of back axle balance suspension structure is characterized in that described sickleshaped swing arm is installed on the vehicle frame by the bearing pin that is fixedly mounted on the vehicle frame.

4. as claimed in claim 3 pair of back axle balance suspension structure is characterized in that, also comprises the swing arm seat that is fixed on the vehicle frame, and described bearing pin places described swing arm seat.

5. as claimed in claim 4 pair of back axle balance suspension structure is characterized in that, it is spacing that the transverse arm of described sickleshaped swing arm is provided with protruding triangle, and described swing arm seat is provided with corresponding positive stop lug boss.

6. as each described pair of back axle balance suspension structure of claim 1-5, it is characterized in that described coil spring upper end is fixed with upper bracket, described sickleshaped swing arm is connected with coil spring by this upper bracket.