CN201784425U - Front axle of large-size electric-wheel self-dumping mining truck - Google Patents

Abstract

The utility model discloses a front axle of a large mine electric wheel dump truck, which mainly includes a front axle, a suspension, a steering rod, a steering oil cylinder, a steering crank, and a brake disc, and is characterized in that: the suspension is a double A type Arm oil-pneumatic spring independent suspension structure, including an upper A-arm, a lower A-arm and an oil-pneumatic spring. The A-arm and the lower A-arm are respectively connected to the front axle via a suspension ball joint assembly, the lower end of the oil-pneumatic spring is connected to the upper A-arm through a joint bearing, and the upper end of the oil-pneumatic spring is connected to the said front axle through a joint bearing. Frame connection. The utility model simplifies the structure of the front axle by adopting the double A-arm oil-pneumatic spring independent suspension, better bears the longitudinal, transverse and vertical loads on the vehicle, and improves the driving safety and handling stability of the vehicle.

Description

Front axle of a large mining electric wheel dump truck

technical field

The utility model relates to a front axle of a vehicle, in particular to a front axle of a large mine electric wheel dump truck. the

Background technique

A dump truck is a vehicle that unloads goods by itself through hydraulic or mechanical lifting, also known as a dump truck. According to different driving modes, it is also divided into 6×4, 8×4 and semi-trailer dump trucks. According to different uses, it is also divided into ① mine dump truck, used to transport coal mines and sand; ② sanitation and green dump truck, used to transport garbage, etc. According to the direction of the compartment turning, there are also front-lift and side-turning dump trucks. the

Mining dump truck is a mining transport vehicle, which belongs to one of the mining equipment. It is mainly used for the transportation of ore and other bulk materials in mines. Unloading trucks are developing toward large tonnage. At the same time, due to people's increasing concern for environmental and energy issues, electric wheel mining dump trucks in the form of electric transmission have begun to be widely used. As an important part of the mining dump truck, the front axle bears the longitudinal force, lateral force, and vertical load on the vehicle, and realizes the functions of vehicle steering, braking, shock mitigation, and vibration attenuation. The frame is connected, and the wheels are installed at both ends. the

At present, the front axle of the mining dump truck mainly adopts an integral structure, and its two ends support the vehicle body through the suspension system, which is mainly used in conjunction with the kingpin type oil-pneumatic spring non-independent suspension. However, it is found in actual use that this The integral front axle equipped with a kingpin oil-pneumatic spring non-independent suspension has a relatively complex structure and relatively harsh forces, which can easily lead to deformation or even cracking of the front axle, thereby affecting the safety of mining dump trucks. the

Contents of the invention

The purpose of the utility model is to provide a front axle of a large mine electric wheel dump truck. Through the improvement of the structure, the structure of the front axle is simplified, which can better bear the load on the vehicle and improve the driving safety and handling stability of the vehicle. . the

In order to achieve the above purpose, the technical solution adopted by the utility model is: a front axle of a large mine electric wheel dump truck, which mainly includes a front axle, a suspension, a steering rod, a steering cylinder, a steering crank, a brake disc, the suspension The frame is double A-arm oil-pneumatic spring independent suspension structure, including upper A-arm, lower A-arm and oil-pneumatic spring. The upper A-arm and the lower A-arm are respectively connected to the front axle via the suspension ball joint assembly, the lower end of the oil-pneumatic spring is connected to the upper A-arm through a joint bearing, and the upper end of the oil-pneumatic spring is connected to the upper A-arm through a joint bearing. The joint bearing is connected with the vehicle frame.

In the above technical solution, the suspension adopts double A-arm oil-pneumatic spring independent suspension, which is symmetrically arranged inside the wheels on both sides, and its structure consists of oil-pneumatic springs, upper and lower A-arms, suspension ball joint assemblies and pin , joint bearings, etc., among which the oil-gas spring is a device that can automatically extend the height, change the pressure and support force according to the load on the vehicle, and is installed above the upper A-arm, and is connected to the top of the upper A-arm through the joint bearing. The upper part of the oil and gas spring is connected to the frame through joint bearings, the inner sides of the upper and lower A-arms are connected to the frame through pin shafts, and the front axle is respectively connected to the upper and lower A-arms through two suspension ball joint assemblies. , The suspension ball joint assembly is a connection device used between the vehicle suspension and the front axle. the

In a further technical solution, the suspension ball head assembly includes a bearing seat, a bearing outer ring and a bearing inner ring ball head arranged in the bearing seat, the bearing seat is connected to the A-arm, and the bearing inner ring ball The end of the head away from the ball head is connected to the front axle. The outer ring of the bearing is composed of left and right outer rings, which are closed and connected by the lock ring clamped on the edge of the outer ring of the bearing, and wrapped in the ball of the inner ring of the bearing. On the outer edge of the spherical surface of the head end, the two form a ball joint connection pair. the

In a further technical solution, the ball joints of the outer ring of the bearing and the inner ring of the bearing in the bearing housing form a joint bearing structure. The ball head of the inner ring of the bearing has an outer spherical surface, and the outer ring of the bearing has an inner spherical surface, which is composed of a joint bearing structure. The outer ring of the bearing is a split structure of left and right lobes, and the left and right two lobes are connected by the lock ring. The petals are assembled on the ball head of the inner ring of the bearing and locked and fixed, so that the outer spherical surface of the inner ring of the bearing slides on the inner spherical surface of the outer ring of the bearing. the

Due to the use of the above-mentioned technical solutions, the utility model has the advantages compared with the prior art:

1. Since the utility model adopts the double A-arm oil-pneumatic spring independent suspension structure, including the upper A-arm, the lower A-arm and the oil-pneumatic spring, the inner sides of the upper and lower A-arms are connected to the vehicle frame through the pin shaft, The upper and lower A-arms are respectively connected to the front axle via a suspension ball joint assembly, the lower end of the oil-pneumatic spring is connected to the upper A-arm through a joint bearing, and the upper end of the oil-pneumatic spring is connected to the vehicle frame through a joint bearing Compared with the previous integral structure front axle with kingpin oil-gas spring non-independent suspension, the structure is simpler, which meets the requirements of longitudinal, lateral and vertical loads on the vehicle, and improves the driving safety of the vehicle and handling stability;

2. The utility model adopts the joint bearing structure, which reduces the axial deformation and wear rate, and the positioning is more accurate;

3. The utility model locates the outer ring of the bearing in the bearing seat, and forms a ball hinge connection with the ball head of the inner ring of the bearing, thereby reducing wear and prolonging the service life;

4. The utility model has the advantages of simple structure, convenient use and easy realization, and is suitable for popularization and use. the

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment one;

Fig. 2 is a structural sectional view of Embodiment 1 of the present utility model. the

Among them: 1. Wheel; 2. Front axle; 3. Oil and gas spring; 4. Frame; 5. Upper A-arm; 6. Lower A-arm; 7. Steering crank; 8. Steering cylinder; 9. Steering rod; 10. Suspension ball joint assembly; 11. Steering arm; 12. Wheel hub; 13. Brake disc; 16. Bearing inner ring ball joint; 17. Bearing outer ring; 18. Bearing seat. the

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment 1: Referring to Figures 1 and 2, a front axle of a large-scale electric wheel dump truck for mining mainly includes a front axle 2, a suspension, a steering rod 9, a steering cylinder 8, a steering crank 7, and a brake disc 13. The suspension is a double A-arm oil-pneumatic spring independent suspension structure, including an upper A-arm 5, a lower A-arm 6 and an oil-pneumatic spring 3, and the inner side of the upper A-arm and the inner side of the lower A-arm are connected to each other through a pin shaft and The mining dump truck frame 4 is connected, the lower end of the oil-gas spring is connected to the upper A-arm through a joint bearing, the upper end of the oil-gas spring is connected to the frame through a joint bearing, and the upper A-arm and the lower A The shaped arms are respectively connected to the front axle 2 through the suspension ball assembly 10, and the outer side of the front axle is connected with the wheel hub 12 and the wheel 1; the suspension ball assembly 10 includes a bearing seat 18, which is arranged in the bearing seat Bearing outer ring 17 and bearing inner ring ball head 16, the bearing seat is connected with the A-arm, the end of the bearing inner ring ball head far away from the ball head is connected with the front axle, and the bearing outer ring is composed of left and right outer rings. The rings are spliced together, and are closed and connected by the lock ring clamped on the edge of the outer ring of the bearing, and wrapped on the outer edge of the spherical surface of the ball head end of the inner ring of the bearing. The two form a ball joint connection pair. The bearing outer ring and the bearing inner ring ball joint constitute the joint bearing structure. the

When the device is in use, in the double A-arm oil-gas spring independent suspension, the oil-gas spring is installed above the upper A-arm, connected to the top of the upper A-arm through a joint bearing, and the upper part of the oil-gas spring is connected to the frame through a joint bearing. , The inner side of the lower A-arm is connected to the frame through the pin shaft, and the bearing seat of the suspension ball joint assembly is connected to the A-arm. The bearing seat is equipped with a bearing outer ring and a bearing inner ring ball head. The bearing inner ring ball head is far away One end of the ball head is connected to the front axle, and the outer ring of the bearing is composed of left and right two-lobed outer rings, which are closed and connected by a lock ring clamped on the edge of the outer ring of the bearing, and wrapped on the spherical surface of the ball head end of the inner ring of the bearing. on the outer edge. When the large mining electric wheel dump truck is driving, the front axle is subjected to longitudinal, lateral and vertical loads, and the force on the frame is transmitted to the A-arm, and the oil-gas spring is driven by the double A-arm structure along with the vehicle. The expansion and contraction change due to the change of the load realizes the functions of mitigating impact and damping vibration. the

Claims (3)

1. A front axle of a large-scale mining electric wheel dump truck, mainly including a front axle (2), a suspension, a steering rod (9), a steering cylinder (8), a steering crank (7), and a brake disc (13), It is characterized in that: the suspension is a double A-arm oil-pneumatic spring independent suspension structure, including an upper A-arm (5), a lower A-arm (6) and an oil-pneumatic spring (3), and the inner side of the upper A-arm and the inner side of the lower A-arm are connected to the mining dump truck frame (4) through the pin shaft, and the upper A-arm and the lower A-arm are respectively connected to the front axle (2) through the suspension ball joint assembly (10) The lower end of the oil-pneumatic spring is connected to the upper A-arm through a joint bearing, and the upper end of the oil-pneumatic spring is connected to the vehicle frame through a joint bearing. 2. The front axle of a large mine electric wheel dump truck according to claim 1, characterized in that: the suspension ball joint assembly includes a bearing seat (18), and the bearing outer ring arranged in the bearing seat (17) and bearing inner ring ball head (16), the bearing seat is connected with the A-arm, the end of the bearing inner ring ball head away from the ball head is connected with the front axle, and the bearing outer ring is composed of left and right two lobes The outer ring is formed by splicing, and is closed and connected by a lock ring clamped on the edge of the outer ring of the bearing, and wrapped on the outer edge of the spherical surface of the ball head end of the inner ring of the bearing, and the two form a ball joint connection pair. 3 . The front axle of a large mine electric wheel dump truck according to claim 2 , characterized in that: the ball joints of the outer ring of the bearing and the inner ring of the bearing in the bearing housing form a joint bearing structure. 4 .

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