Leaf spring type suspension with rubber bushing structure

Abstract

The invention discloses a leaf spring type suspension with a rubber bushing structure. The leaf spring type suspension comprises a leaf spring assembly, a leaf spring support welded on a frame, a connecting bolt, a slotted nut, and a cotter pin; the leaf spring assembly comprises a leaf spring and a rubber bushing; the rubber bushing is composed of a rubber sleeve and a metal sleeve; the metal sleeve comprises a neck bush, a gasket, and a wrapped bush in sequence from inside to outside; the rubber sleeve fills a hollow part of the metal sleeve; the rubber bushing is in interference fit with a spring eye of one end of the leaf spring; the leaf spring support comprises a baseplate, a reinforcing plate, a left vertical plate, and a right vertical plate; the left vertical plate and the right vertical plate are vertically welded at the lower part of the baseplate; the reinforcing plate is welded among the baseplate, the left vertical plate and the right vertical plate; the left vertical plate and the right vertical plate are provided with through holes; the connecting bolt passes through the through holes and the neck bush; the other end of the connecting bolt is fixed by the slotted nut through the cotter pin; the two ends of the metal sleeve of the rubber bushing lean against onto the left vertical plate and the right vertical plate. The leaf spring type suspension is simple in structure, light in weight, low in cost, and free of maintenance.

Description

technical field [0001] The invention relates to a leaf spring type suspension of a truck crane, in particular to a leaf spring type suspension with a rubber bushing structure. Background technique [0002] Suspension refers to the general term for all force-transmitting connectors between the frame and the axle. The force and the moments generated by these reaction forces are transmitted to the frame according to the predetermined design purpose, so as to ensure the normal driving of the vehicle. [0003] Vehicles generally use leaf springs as elastic components. At the same time, leaf springs also have the functions of guiding and damping. Leaf spring suspensions are widely used in truck cranes. [0004] The traditional suspension connection structure such as Figure 9 As shown, it includes a leaf spring assembly 4, a leaf spring support 5 welded on the vehicle frame, a connecting pin 9, and a positioning pin 10, and the connecting pin 9 connects the leaf spring assembly 4...

AI Technical Summary

Problems solved by technology

[0004] The traditional suspension connection structure such as Figure 9 As shown, it includes a leaf spring assembly 4, a leaf spring support 5 welded on the vehicle frame, a connecting pin 9, and a positioning pin 10, and the connecting pin 9 connects the leaf spring assembly 4 to the leaf spring support 5 At the same time, there is a positioning pin 10 to prevent the connecting pin shaft 9 from rotating, and copper sleeves are arranged on the rolling ears of the leaf spring assembly 4. The copper sleeve rotates. In order to make the leaf spring assembly 4 reach a certain service life, the suspension system has a lubricating structure, that is, the connecting pin shaft 9 needs to have a lubricating oil passage and an oil hole, and the structure is complicated and requires maintenance; 9 There is no strengthening effect on the leaf spring support 5. In order to enable the leaf spring support 5 to reliably transmit the lateral force of the vehicle, the leaf spring support 5 needs to use a thick plate and weld multiple ribs at the same time, that is, the traditional plate The spring support 5 needs to be formed by welding multiple parts of the base plate 51, the rib plate 52, the left thick vertical plate, the right thick vertical plate, the vertical plate, and the inclined rib plate 11, and the structure is complex, such as Figure 10 , Figure 11 shown

In summary, the traditional suspension connection structure leaf spring support has complex structure, high cost, heavy weight and requires maintenance

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