CN205439859U - Double tie-rod McPherson front suspension structure of mining dump truck - Google Patents

Abstract

The utility model discloses a mining dump truck duplex pull rod shi maifuxun front suspension structure, including drag link (4), oblique pull rod (12), oil gas suspension cylinder (3) and installing the oil gas suspension piston rod (9) in oil gas suspension cylinder (3), it is continuous with the frame with round pin axle assembly II that joint bearing II is passed through to drag link one end, and the other end passes through joint bearing and is connected with oil gas suspension lower end of the piston rod, the one end of pull rod is passed through joint bearing III and sells axle assembly III to link to each other with the frame to one side, and the other end passes through joint bearing and is connected with oil gas suspension lower end of the piston rod, the drag link can be adjusted according to actual conditions with the upper and lower position of oblique pull rod, the joint bearing I that oil gas suspension cylinder and oil gas suspension piston rod pass through oil gas suspension cylinder upper end links to each other with the frame with round pin axle assembly I. The utility model discloses lengthened the life of structure, the cost is reduced has improved mining automobile's reliability and riding comfort.

Description

Double tie-rod McPherson front suspension structure of mining dump truck

technical field

The utility model relates to a suspension structure, in particular to a double-tie-rod MacPherson front suspension structure of a mining dump truck, which belongs to the technical field of suspension structures.

Background technique

With the rapid increase of mining volume at home and abroad, mining dump trucks are developing in the direction of large tonnage. At present, the load has reached about 400 tons. In addition to the harsh mine environment and complex road conditions, the requirements for the front suspension of mining dump trucks are also increasing. Higher and higher. The quality of the front suspension structure directly determines the reliability of the vehicle and the service life of the key components of the ride comfort, such as the frame and tires. Although the candle-type independent suspension widely used in the market is simple in structure, the structure is simple, the force of the suspension oil cylinder is complicated, the service life of the oil cylinder is low, and the front wheel alignment parameters do not change during operation, resulting in poor vehicle handling performance and tires. Fast wear and increased use costs.

Contents of the invention

Aiming at the problems existing in the above-mentioned prior art, the utility model provides a double tie-rod MacPherson front suspension structure of a mining dump truck, which can improve the ride comfort and handling stability during operation, reduce the use cost, and extend the suspension , frame, tires and other components, thereby improving the overall performance of mining vehicles.

In order to achieve the above purpose, the utility model adopts a double tie-rod McPherson front suspension structure for mining dump trucks, including transverse tie rods, diagonal tie rods, oil-pneumatic suspension cylinders and oil-pneumatic suspensions installed in the oil-pneumatic suspension cylinders. Suspension piston rod, one end of the tie rod is connected to the frame through the joint bearing II and the pin shaft assembly II, and the other end is connected to the lower end of the piston rod of the oil and gas suspension through the joint bearing; one end of the diagonal stay rod is connected to the joint bearing III and the pin shaft assembly III is connected with the frame, and the other end is connected with the lower end of the piston rod of the oil-pneumatic suspension through joint bearings; the upper and lower positions of the tie rods and diagonal tie rods can be adjusted according to the actual situation; the oil-pneumatic suspension cylinder and the piston rod of the oil-pneumatic suspension form the oil-pneumatic suspension The oil cylinder is connected with the vehicle frame through the joint bearing I and the pin shaft assembly I at the upper end of the oil-gas suspension cylinder barrel. Oil-pneumatic suspension cylinder is filled with oil and air, and the ratio of oil and air can be changed according to the actual application environment, so as to realize the nonlinear stiffness characteristics and nonlinear damping characteristics of the suspension, which is conducive to improving the smoothness of the mine car on different road surfaces sex.

The piston rod of the oil-air suspension is connected to the tie rod through the joint bearing IV, and the piston rod of the oil-air suspension is connected to the diagonal tie rod through the joint bearing V. The oil cylinder of the existing candle suspension bears all the forces and moments, the stress is complicated, and the life of the oil cylinder is low. The presence of the transverse tie rods and diagonal tie rods in the utility model bears most of the force and moment of the suspension, improves the force characteristics of the suspension oil cylinder, improves the service life of the oil cylinder, and has better ride comfort.

By rationally designing the length of the two tie rods and the characteristics of the oil-air suspension, it is ensured that when the mining dump truck is in the heavy truck position, the tie rods are in the horizontal position and along the vehicle's transverse direction, thereby ensuring the minimum change in the front wheelbase under heavy load conditions and improving the performance of the truck. Driving stability with minimal tire wear. The positioning parameters of the candle suspension, such as front wheel camber, kingpin inclination, and kingpin caster, do not change during vehicle operation, which is unfavorable to the vehicle kinematics during driving. In the double tie-rod MacPherson front suspension structure of the utility model, the two ends of the tie rods and the diagonal tie rods are connected by joint bearings, which can swing up and down with the expansion and contraction of the suspension oil cylinder, by optimizing the hinge points of the tie rods and the diagonal tie rods The position can realize that during the running process of the vehicle, especially during the turning process of the vehicle, the positioning parameters of the suspension can be changed according to the laws that are beneficial to the dynamic characteristics of the vehicle, and the handling stability of the vehicle can be improved.

Compared with the prior art, the utility model solves the problem of harsh load conditions of the oil-gas suspension of general mining vehicles, reduces the stress peak value of the oil-gas suspension, reduces wear and tear, and improves the service life of the oil-gas suspension; It is directly connected with the piston rod of the oil-pneumatic suspension, the structure is simple, the change law of the front wheel positioning parameters is ideal, the handling stability and riding comfort of the mining vehicle are improved, and the service life of the tire is also improved; the two ends of each connecting rod are connected by joint bearings The force direction of each connecting rod is along the line connecting the spherical centers of the joint bearings at both ends and the mutual influence is small, which reduces the change in the force direction and deformation of structural parts such as the frame. At the same time, the connecting rod has a simple structure and is very convenient for installation and maintenance.

Description of drawings

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

In the figure: 1. Joint bearing I, 2. Pin shaft assembly I, 3. Oil-gas suspension cylinder, 4. Tie rod, 5. Pin shaft assembly II, 6. Joint bearing II, 7. Joint bearing IV, 8. Joint bearing V, 9. Oil and gas suspension piston rod. 10. Pin shaft assembly III, 11. Joint bearing III, 12. Diagonal stay rod.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, a double tie-rod MacPherson front suspension structure of a mining dump truck includes a transverse tie rod 4, a diagonal tie rod 12, an oil-pneumatic suspension cylinder 3, and an oil-pneumatic suspension installed in the oil-pneumatic suspension cylinder 3. Suspension piston rod 9, one end of tie rod 4 is connected with the vehicle frame through joint bearing II6 and pin shaft assembly II5, and the other end is connected with the lower end of oil-pneumatic suspension piston rod 9 through joint bearing; one end of diagonal tie rod 12 is connected through joint bearing III11 and The pin shaft assembly III10 is connected with the vehicle frame, and the other end is connected with the lower end of the oil-air suspension piston rod 9 through a joint bearing; the upper and lower positions of the tie rod 4 and the diagonal tie rod 12 can be adjusted according to the actual situation; The suspension piston rod 9 is connected to the vehicle frame through the joint bearing I1 and the pin shaft assembly I2 at the upper end of the oil-pneumatic suspension cylinder 3 .

The oil-pneumatic suspension piston rod 9 is correspondingly connected with the tie rod 4 and the diagonal tie rod 12 through the joint bearing IV7 and the joint bearing V8 respectively.

When in use, through reasonable design of the length of the two tie rods and the characteristics of the oil-air suspension, it is ensured that when the mining dump truck is in the heavy vehicle position, the tie rods are in the horizontal position and along the transverse direction of the vehicle, so as to ensure that the front wheelbase changes under heavy load conditions. Minimal, improving driving stability with minimal tire wear. The positioning parameters of the candle suspension, such as front wheel camber, kingpin inclination, and kingpin caster, do not change during vehicle operation, which is unfavorable to the vehicle kinematics during driving. In the double tie-rod MacPherson front suspension structure of the utility model, the two ends of the tie rods and the diagonal tie rods are connected by joint bearings, which can swing up and down with the expansion and contraction of the suspension oil cylinder, by optimizing the hinge points of the tie rods and the diagonal tie rods The position can realize that during the running process of the vehicle, especially during the turning process of the vehicle, the positioning parameters of the suspension can be changed according to the laws that are beneficial to the dynamic characteristics of the vehicle, and the handling stability of the vehicle can be improved.

The oil-air suspension cylinder composed of the oil-air suspension piston rod (9) in the oil-air suspension cylinder (3) is filled with oil and air, and the ratio of oil and air can be changed according to the actual application environment, so as to realize the suspension Non-linear stiffness characteristics and non-linear damping characteristics are conducive to improving the smoothness of the mine car on different road surfaces; the air can also be replaced by nitrogen.

The oil-pneumatic suspension piston rod 9 is used as a kingpin to connect the steering knuckle and the steering knuckle arm, etc.

It can be seen from the above structure that the utility model uses a simple structural arrangement, while using the oil-air suspension as the kingpin to ensure the positioning parameters of the front wheels, it solves the problem of severe load conditions when the oil-air suspension is used as the kingpin for general mining dump trucks. It solves the problem of low service life of parts, and at the same time solves the fundamental problem of poor dynamic performance of general mining dump trucks.

Claims (4)

1. a mine dump truck double tie rod type McPherson front suspension structure, is characterized in that, comprises transverse tie rod (4), diagonal tie rod (12), oil-pneumatic suspension cylinder barrel (3) and is installed in the oil-pneumatic suspension The oil-air suspension piston rod (9) in the cylinder (3), one end of the tie rod (4) is connected to the frame through the joint bearing II (6) and the pin shaft assembly II (5), and the other end is connected to the oil-air suspension through the joint bearing. The lower end of the suspension piston rod (9) is connected; one end of the diagonal stay rod (12) is connected with the vehicle frame through the joint bearing III (11) and the pin shaft assembly III (10), and the other end is connected with the oil-gas suspension piston rod ( 9) The lower end is connected; the upper and lower positions of the tie rod (4) and the diagonal tie rod (12) can be adjusted according to the actual situation; the oil-air suspension cylinder (3) and the oil-air suspension piston rod (9) pass through the oil-air suspension cylinder ( 3) The joint bearing I(1) and pin shaft assembly I(2) at the upper end are connected with the vehicle frame. 2. a kind of mine dump truck double tie-rod type McPherson front suspension structure according to claim 1, is characterized in that, described oil-pneumatic suspension piston rod (9) is connected with tie rod by joint bearing IV (7) (4) connection, the oil-gas suspension piston rod (9) is connected with the diagonal stay rod (12) through the joint bearing V (8). 3. a kind of mining dump truck double tie-rod type McPherson front suspension structure according to claim 1 is characterized in that, by optimizing the hinge point positions at both ends of the tie rod (4) and the diagonal tie rod (12), it is possible to Achieves improved suspension dynamics. 4. a kind of mine dump truck double tie-rod type McPherson front suspension structure according to claim 1 is characterized in that, the oil-air suspension piston rod (9) in the oil-air suspension cylinder (3) is formed Oil-air suspension cylinder is filled with oil and air, and the ratio of oil and gas can be adjusted, which can realize the nonlinear stiffness and resistance characteristics of the suspension.