Vehicle-mounted crane for maintenance vehicle

Abstract

The utility model relates to a vehicle-mounted gantry crane for a maintenance vehicle, which solves the problem that the conventional gantry crane cannot meet the hoisting work of long-distance, medium-heavy-duty engines of large and medium-sized commercial vehicles in the actual maintenance process. Comprising a maintenance carriage bottom plate and two portal frames, hanging brackets are welded to the middles of portal frame beams, guide wheels are installed at the lower ends of the hanging brackets, the upper edges of I-shaped guide rails are inserted between the hanging bracket guide wheels of the portal frames and can move relative to the guide wheels, movable hanging brackets are installed on the lower edges of the I-shaped guide rails, and electric hoists are installed on the movable hanging brackets. The portal frame is formed by splicing and welding a cross beam of an I-shaped beam and a vertical beam of a groove-shaped beam, and an inclined support is welded at the joint. The lifting device is simple and efficient in structure, large in use radius, capable of meeting the lifting and moving work of medium and heavy truck parts and small in occupied space of a maintenance car.

Description

Technical Field

[0001] The utility model relates to an overhead crane, in particular to an overhead crane mounted on a maintenance vehicle. Background Art

[0002] With the continuous growth of the number of heavy-duty trucks in my country and the aging of the vehicle age structure, the scale of the automobile maintenance market has the momentum of continuous growth. The demand for professional maintenance vehicles that can quickly reach the scene is constantly increasing. Maintenance vehicles mainly perform maintenance, adjustment and repair on vehicles, including systematic maintenance of engines, transmission systems, brake systems, suspension systems, etc. Currently, maintenance vehicles are mainly based on tailgate cantilever cranes due to the influence of weight, space and cost. However, the tailgate cantilever crane is limited by its rotation radius and load-bearing structure. In the actual maintenance process, it cannot meet the long-distance and medium-heavy engine lifting work of large and medium-sized commercial vehicles. Starting from the actual use situation and combining the structural advantages of the factory overhead crane, the utility model miniaturizes the large overhead crane to provide a more efficient solution for the disassembly and assembly of large parts such as engines and gearboxes for maintenance of medium and heavy-duty vehicles. Utility Model Content

[0003] The utility model is mainly used to reduce the labor intensity of long-lifting distance and large-tonnage lifting of engines, gearboxes, tires, etc. when repairing medium and heavy vehicles, thereby improving the timeliness of repair.

[0004] The utility model is realized by the following technical solutions:

[0005] A maintenance vehicle-mounted overhead crane comprises a maintenance vehicle floor and two gantries, a hanger is welded to the middle of the gantry crossbeam, a guide wheel is mounted at the lower end of the hanger, the upper edge of an I-shaped guide rail is inserted between the hanger guide wheels of the gantry and can move relative to the guide wheel, a movable hanger is mounted at the lower edge of the I-shaped guide rail, and an electric hoist is mounted on the movable hanger.

[0006] The gantry is made of I-beam crossbeams and trough beam vertical beams welded together, with diagonal supports welded at the joints.

[0007] The utility model has a simple and efficient structure and a large operating radius, and can meet the lifting and moving work of medium and heavy truck parts, while occupying less space in the maintenance vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a simplified structural diagram of the utility model's truck-mounted overhead crane;

[0009] Figure 2 This is a schematic diagram of the guide rail retracted state;

[0010] Figure 3 It is a schematic diagram of the guide rail working status. DETAILED DESCRIPTION

[0011] The utility model uses a vehicle-mounted overhead crane to install gantries 2 and 3 on the floor 1 of the maintenance compartment. The two sets of gantries are welded together using I-beams and trough beams. A hanger 4 is welded in the middle, and a guide wheel 5 is installed at the lower end of the hanger. An I-shaped guide rail 6 is inserted between the hanger guide wheels 5 of the gantry. A mobile hanger 7 is installed on the guide rail 6, and an electric hoist (lifting capacity 1.5 tons) 8 is installed on the mobile hanger 7. When the vehicle is driving, the guide rail 6 is retracted into the vehicle for easy transportation. When performing maintenance work, the guide rail 6 is extended to the specified position, and the parts are hung on the electric hoist. The electric hoist is operated to lift the parts, and the parts are moved to the specified position via the guide rail 6.

[0012] The current truck-mounted cranes for maintenance vehicles are mainly cantilever cranes with a lifting capacity of about 500kg. The cantilever cannot be extended or retracted, which limits its use. The practical truck-mounted crane is welded to the vehicle body and has two sets of gantries with high strength. It can lift all maintenance parts weighing less than 1.5 tons and can move 2800mm forward and backward.

Claims

1. A maintenance vehicle mounted overhead crane, characterized by: It includes an inspection car floor and two gantries installed on it. A hanger is welded in the middle of the gantry beam, and a guide wheel is installed at the lower end of the hanger. The upper edge of the I-shaped guide rail is inserted between the guide wheels and can move relative to the guide wheels. A movable hanger is installed at the lower edge of the I-shaped guide rail, and an electric hoist is installed on the movable hanger.

2. The maintenance vehicle mounted overhead crane according to claim 1, characterized in that: The gantry is made of I-beam crossbeams and trough beam vertical beams welded together, with diagonal supports welded at the joints.

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