Wrecker product introduction and understanding

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Wrecker product introduction and understanding

●   Wrecker

The wrecker is called the road wrecker, also known as the trailer. It consists of a chassis, a lifting device, a lifting traction device, a hydraulic system, an electronic control system, a body and a tool box, and is equipped with lifting, dragging and lifting. Traction and other functions are applicable to the clearing of highways and urban roads.

  use

Wreckers are special vehicles equipped with road rescue equipment. Faults and accidents are unavoidable when a car is on the road, especially on high-grade roads. The task of the wrecker is to remove the faulty vehicle or accident vehicle from the site in time to ensure unimpeded access. Therefore, road wreckers are also called road emergency vehicles. With the increase of high grade roads and in-use vehicles, wreckers have also developed.

Mainly used for road failure vehicles, urban illegal vehicles and rescue.

  Wrecker Classification

The wrecker is a special engineering vehicle designed to ensure the smooth flow of roads. It is an important equipment for traffic management in the prosperous urban areas and highways. It can quickly, timely and safely clear accidents, breakdowns, illegal vehicles on roads, and special vehicles to divert road traffic.

First, the wrecker is divided into four categories: a lifting and detaching wrecker, a lifting and unloading wrecker, a flat wrecker, and an ordinary type. Among them, the lifting and separating type wrecker includes two types of jib rotary wrecker and non-rotating wrecker.

Second, people often say that the 3 tons of wreckers, 5 tons of wreckers, 8 tons of wreckers, 20 tons of wreckers and other specifications of wreckers, in fact, refers to the kind of wrecker chassis The level of carrying capacity. It has a certain relationship with the total mass of the towed vehicle, but there is no inevitable connection. The larger the tonnage, the wrecker's operating capacity is correspondingly larger.

Third, when wreckers are to be towed (drag) vehicles away from the site, they are generally supported and dragged. Support is to use the support arm of the wrecker to be lifted and pulled by the trolley. Dragging, that is, people often say hard drag, is the use of the wrecker will be hard to pull the trailer to drive.


●   User guide

1. Connect the brake pedal together when the wrecker is walking on the road.

2. Correctly adjust the brake system of the wrecker.
3. Check the condition of the vehicle and tire inflation before driving the wrecker.
4, when walking on the road to open the wrecker's headlights and flashing lights.
5, "slow vehicles" logo should be hung in the wrecker or drag trailer obvious place.
6. If the weight of the wrecker is greater than the wrecker, do not drag it downhill.
7. Drag the heavy object uphill and downhill to hang the same file.
  8, when the wrecker engine shutdown device to maintain a good working condition.
  9. Keep the wrecker battery and starter system in good working condition.
  10. When the wrecker is suddenly started, be sure to open the gear and turn the crank in the driver's seat.

  11. Double-entry equipment must be equipped with a reversing alarm that can be heard.

● Wrecker maintenance and maintenance

The wrecker is mainly composed of: chassis, lifting device, lifting traction device, hydraulic system, electronic control system, body and tool box, etc. It is equipped with many functions such as lifting, pulling and pulling, etc., suitable for high speed Road and urban road repair operations.

The use of wreckers Wreckers are special construction vehicles designed to ensure the smooth flow of roads. They are important equipment for traffic management in busy urban areas and highways. It can quickly, timely and safely clear accidents, breakdowns, illegal vehicles on roads, and special vehicles to divert road traffic.

First, the wrecker is divided into four categories: a lifting and detaching wrecker, a lifting and unloading wrecker, a flat wrecker, and an ordinary type. Among them, the lifting and separating type wrecker includes two types of jib rotary wrecker and non-rotating wrecker.

Second, people often say that the 3 tons of wreckers, 5 tons of wreckers, 8 tons of wreckers, 20 tons of wreckers and other specifications of wreckers, in fact, refers to the kind of wrecker chassis The level of carrying capacity. It has a certain relationship with the total mass of the towed vehicle, but there is no inevitable connection. The larger the tonnage, the wrecker's operating capacity is correspondingly larger.

Third, when wreckers are to be towed (drag) vehicles away from the site, they are generally supported and dragged. Support is to use the support arm of the wrecker to be lifted and pulled by the trolley. Dragging, that is, people often say hard drag, is the use of the wrecker will be hard to pull the trailer to drive.

Among them, the care of the wrecker must meet the following two conditions.

1. The lifting weight of the supporting arm is not more than the lifting weight of the wrecker, and the lifting weight of the lifting arm gradually decreases as the supporting arm lengthens.

2. The quality of the rated care must not exceed its maximum total mass. That is to say, the total mass of the vehicles that are taken care of must not exceed the maximum total mass of the wrecker. For example, in the 5140TQZ wrecker, the total mass of the vehicle that is being held is not to exceed 14 tons at first, and the weight of the lifting point of the care arm is also considered to be within the rated lifting mass range. Wrestling ability of wreckers is related to the maximum total mass of the wrecker and engine power. Article 3.6 of GB7258 “Technical Conditions for Operational Safety of Motor Vehicles” stipulates that the specific power of motor vehicles shall not be less than 4.8 kW/t, and the dragging and pulling capacity of the wrecker must meet this requirement.

For example, for a 5140TQZ wrecker, the maximum gross mass G is 14000kg, and the engine power is 132kW. Then the dragging quality G* of the wrecker must meet: G+G*≤132/4.8X1000, that is, G*≤ 13500 kg. From the above results, it can be seen that due to the matching of the bearing and the engine when considering the design of the chassis, the refitted wrecker has the same dragging and pulling capabilities. For safety, it should be used according to this regulation.

Fourth, the use of the car's operation methods, precautions, etc., are used and the service life of the wrecker is extended.

The market of wreckers With the rapid development of China's economy, the construction of highways has progressed by leaps and bounds, and the mileage has continuously increased. China's “five vertical and seven horizontal” highway main lines will be basically completed.

● How to choose a wrecker 　

    How to choose a road wrecker must be selected according to the actual use environment. Wreckers are suitable for use in wreckers and traffic departments of auto repair plants. It is a reasonable choice for a wrecker to be suitable for work. The following points should be noted when selecting road wreckers:

1, according to the requirements of obstacle removal operations

Determine the types of road wreckers, different cleaning environment, and the configuration requirements for wreckers are different. The same highway, some roads, medium-duty trucks and long-distance bus traffic more, while others are more heavy-duty trucks. In this regard, the configuration of the wrecker should be different. The former should be equipped with a medium-heavy wrecker and a device capable of clearing large buses. The latter should be equipped with a super-heavy wrecker. The same traffic police department in the city, some places need to clear more illegal motorcycles, and some need to clear the more illegal cars. In this regard, the former should be equipped with a motorcycle lift platform type wrecker, and the latter should be equipped with a clamp type wrecker.

2, technical parameters

According to the new standard for wreckers, the maximum lifting quality and the maximum supporting quality are the important technical parameters for measuring the working ability of a wrecker. The maximum care quality of a wrecker must not exceed the maximum design mass of its chassis. The maximum lifting mass refers to the lifting lifting quality of the wrecker when the effective length of the holding arm is at a minimum value. It shall satisfy the requirement that the wagon of the front axle is not less than 15% of the maximum total mass after the wrecker is in the supporting state. The bridge axle load must not exceed 20% of its allowable load; the axle load on the front axle must not exceed its allowable load at no-load.” The ratio of the lifting mass of the wrecker to the quality of the support is not less than 20%. According to these regulations, it can identify whether the technical parameters marked by the manufacturer on the wrecker are true and whether it meets the wrecker standards.

The maximum lifting quality of a wrecker is one of the important parameters for measuring the technical performance of a wrecker. The QC/T 645-2004 standard stipulates that "the maximum lifting mass: the rated lifting mass of the wrecker when the effective length of the holding arm is the minimum", and "the axle load on the rear axle must not exceed its allowable value in the maximum holding state. 20% of the load." This is to calculate the maximum lifting quality of the wrecker according to the conditions of the rear axle. The overall arrangement can be rationally carried out. It is also possible to increase the weight of the wrecker's chassis to improve its maximum lift quality.

3, the standard configuration and purchase configuration list

The standard configuration refers to the configuration required by Dongfeng Wrecker within a certain range to properly complete the requirements for the removal of obstacles; the optional configuration means that the user can purchase some spare parts instead of the original standard parts, or buy some spare parts Expand the scope of work of the wrecker. If the hydraulic system has imported parts and domestic parts for matching; optional auxiliary wheels or other operating accessories to increase operating functions.

The available wreckers are difficult to complete and remove obstacles, which seriously affect traffic. A wrecker manufacturer hopes to solve this problem by increasing the tonnage of the chassis. However, the ability to raise the holding capacity is limited, and the vehicle price increases several times, affecting the economic efficiency of users. Therefore, the market calls for wreckers with large lifting capacity and support.

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