CN207523385U - A kind of limiting block assembly suitable for heavy-duty car suspension system - Google Patents

Abstract

The utility model discloses a limit block assembly suitable for a heavy-duty vehicle suspension system, which comprises a cover plate and a limit block. The cover plate is a cuboid with ear-shaped structures at both ends, and a The stepped rectangular hole has rounded chamfers at the transition part; the limit block is in the shape of a ladder, with rounded chamfers at the transition part, the limit buffer part has an inward draft slope, and the contact surface is wedge-shaped; The limiting block is placed in the stepped rectangular hole of the cover plate, and the mounting surfaces of the two are flush. The cover plate and the limit block of the utility model are both applied, and there is no need for vulcanization bonding of metal and polyurethane materials, and it is not necessary to fill metal parts into the limit block, which avoids the impact load of the traditional rubber and metal vulcanization bonding structure. The problem of easy cracking and falling off improves the reliability of the limit block assembly, and its wedge-shaped contact surface also avoids a very sharp transition curve in its damping characteristics, which can prolong the service life.

Description

A limit block assembly suitable for heavy-duty vehicle suspension system

technical field

The utility model relates to a limit block assembly for automobiles, in particular to a limit block assembly suitable for heavy-duty vehicle suspension systems, and belongs to the technical field of auto parts.

Background technique

The limit block assembly of the traditional heavy-duty vehicle suspension system is mostly the product of rubber and metal vulcanization bonding, and the contact surface of the assembly is designed to be flat when it acts as a buffer limit. After long-term impact and compression deformation, the rubber is extremely Easy to crack and fall off. At present, more advanced limit blocks generally use polyurethane elastomer materials, which are superior to rubber in terms of wear resistance, tear resistance, bearing capacity, and high temperature resistance. Moreover, polyurethane elastomers can be cast into a variety of Products with complex shapes greatly optimize the comprehensive performance of the limit block assembly and greatly improve the reliability of the suspension system. The polyurethane limit block assembly is generally divided into three structural forms: the metal and the polyurethane elastomer are bonded together through an adhesive, the metal parts are embedded in polyurethane casting, and the cover plate and the polyurethane elastomer are separated. The disadvantage of the integrated structure is that in the case of using the same adhesive, the lower the hardness of the polyurethane elastomer, the worse the bonding performance, so the adaptability to the design of the limit block hardness is poor; the structure of metal parts embedded in polyurethane The disadvantage is that it is not easy to embed too many metal parts, otherwise it will affect the performance of polyurethane, so the structural strength is limited. The limit block assembly of the heavy-duty vehicle suspension system is to transfer the force from the spring to the buffer limit block smoothly when the leaf spring is compressed to a certain stroke, and then use the damping function of its polymer material to quickly dissipate the vibration energy Converted into heat energy, thereby reducing the vibration of the vehicle and improving ride comfort. However, its high damage rate has always been a headache for vehicle and component manufacturers, and the main damage is the limit block. The end cap and the limit block are used in combination, and the stress surface is processed into a wedge shape, which has a longer service life than the traditional structure.

Contents of the invention

The technical problem to be solved by the utility model is to provide a limit block assembly suitable for heavy-duty vehicle suspension systems with simple structure, high wear resistance, strong impact resistance and high reliability in view of the defects existing in the prior art .

In order to solve this technical problem, the utility model provides a limit block assembly suitable for heavy-duty vehicle suspension systems, including a cover plate and a limit block. The cover plate is a cuboid with ear-shaped Structure, the middle part of the cover plate is provided with a stepped rectangular hole, and the transition part is provided with rounded chamfers; the limit block is in the shape of a ladder, with rounded chamfers at the transition part, and the limit buffer part has an inward draft slope , the contact surface is wedge-shaped; the limit block is placed in the stepped rectangular hole of the cover plate, and the installation surfaces of the two are flush.

The thickness of the cover plate is one-third of the height of the limit block.

The limiting block is made of porous polyurethane elastomer material.

Both ear-shaped structures of the cover plate are provided with circular holes, and the cover plate is connected with related equipment through the two circular holes by fasteners.

Beneficial effects: the utility model uses both the cover plate and the limit block, without vulcanization bonding of metal and polyurethane materials, and without filling metal parts into the limit block, avoiding the traditional rubber and metal vulcanization bonding structure The problem of easy cracking and falling off under impact load improves the reliability of the limit block assembly, and its wedge-shaped contact surface also avoids a very sharp transition curve in its damping characteristics, which can prolong its service life.

Description of drawings

Fig. 1 is a side sectional structural representation of the utility model;

Fig. 2 is a schematic top view of the structure of the utility model;

Fig. 3 is a structural schematic diagram of the cover plate of the present invention.

In the figure: 1 cover plate, 2 limit block, 3 round hole, 4 stepped rectangular hole, 5 limit buffer part, 6 contact action surface, 7 ear-shaped structure.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

Fig. 1 shows the side sectional structure diagram of the utility model.

Figure 2 shows a schematic top view of the structure of the utility model.

The utility model comprises a cover plate 1 and a limiting block 2 .

FIG. 3 is a schematic structural view of the cover plate of the present invention.

The cover plate 1 is a cuboid, with ear-shaped structures 7 at both ends, a stepped rectangular hole 4 in the middle of the cover plate 1, and round chamfers at the transition part.

The limiting block 2 is in the shape of a ladder, its transition part has rounded chamfers, the limiting buffer part 5 has an inward draft angle, and the contact surface 6 is wedge-shaped.

The limiting block 2 is placed in the stepped rectangular hole 4 of the cover plate 1, and the mounting surfaces of the two are flush.

The thickness of the cover plate 1 is one third of the height of the limit block 2 .

The limiting block 2 is made of porous polyurethane elastomer material.

The two ear structures 7 of the cover plate 1 are provided with round holes 3 , and the cover plate 1 is connected with related equipment through the two round holes 3 by fasteners.

The cover plate and the limit block of the utility model are both applied, and there is no need for vulcanization bonding of metal and polyurethane materials, and it is not necessary to fill metal parts into the limit block, which avoids the impact load of the traditional rubber and metal vulcanization bonding structure. The problem of easy cracking and falling off improves the reliability of the limit block assembly, and its wedge-shaped contact surface also avoids a very sharp transition curve in its damping characteristics, which can prolong its service life.

The above-mentioned embodiments of the utility model are only examples, not the only ones, and all changes within the scope of the utility model or equivalent to the scope of the utility model are surrounded by the utility model.

Claims (4)

1. A limit block assembly suitable for heavy-duty vehicle suspension systems, characterized in that: it comprises a cover plate (1) and a limit block (2), and the cover plate (1) is a cuboid with two ends set There is an ear-shaped structure (7), the middle part of the cover plate (1) is provided with a stepped rectangular hole (4), and its transition part is provided with rounded chamfers; the limit block (2) is in the shape of a ladder, and its transition part has round Chamfering, the limit buffer part (5) has an inward draft angle, and the contact surface (6) is wedge-shaped; the limit block (2) is placed in the stepped rectangular hole (4) of the cover plate (1) ), the mounting surfaces of both are flush. 2. The limiting block assembly suitable for heavy-duty vehicle suspension systems according to claim 1, characterized in that: the thickness of the cover plate (1) is one-third of the height of the limiting block (2). 3. The limiting block assembly suitable for heavy-duty vehicle suspension system according to claim 1, characterized in that: said limiting block (2) is made of porous polyurethane elastomer material. 4. The limiting block assembly suitable for heavy-duty vehicle suspension systems according to claim 1, 2 or 3, characterized in that: both ear structures (7) of the cover plate (1) are provided with The round holes (3), and the cover plate (1) are connected with associated equipment through the two round holes (3) by fasteners.