CN-224225146-U - Lifting beam, frame and electric wheel mining dump truck

CN224225146UCN 224225146 UCN224225146 UCN 224225146UCN-224225146-U

Abstract

The utility model discloses a lifting beam, a frame and an electric wheel mining dump truck, wherein the lifting beam comprises a lifting shaft head and a pipe beam, the lifting shaft head penetrates through corresponding through holes in an inner web plate and an outer web plate of a frame longitudinal beam, the outer peripheral surface of the lifting shaft head is welded and fixed with the edge of the through hole through a circumferential welding line, one end of the lifting shaft head, which is positioned at the outer side of the frame longitudinal beam, is provided with a U-shaped groove, two opposite sides of the U-shaped groove are provided with shaft holes, one end of the lifting shaft head, which is positioned at the inner side of the frame longitudinal beam, is connected with the pipe beam, a groove is formed at the joint of the pipe beam and the lifting shaft head, and the lifting shaft head and the pipe beam are welded through an inserted lap joint structure. The utility model can reduce the risk of cracking the welding seam and prolong the service life of the frame.

Inventors

WU HAO
YANG ZHAO
LI JIA
Niu Mang
ZHANG BIN

Assignees

陕西同力重工股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250521

Claims (8)

1. The lifting beam of the mining dump truck with the electric wheels is characterized by comprising a lifting shaft head and a tubular beam; The lifting shaft heads penetrate through corresponding through holes in the inner web plate and the outer web plate of the frame longitudinal beam, the peripheral surfaces of the lifting shaft heads and the edges of the through holes are welded and fixed through circumferential weld seams, one end of each lifting shaft head, which is positioned on the outer side of the frame longitudinal beam, is provided with a U-shaped groove, shaft holes are formed in two opposite sides of each U-shaped groove, and one end of each lifting shaft head, which is positioned on the inner side of the frame longitudinal beam, is connected with the corresponding tubular beam; the pipe beam and the lifting shaft head are welded by adopting an inserted lap joint structure.
2. The electric wheel mining dump truck lifting beam of claim 1, further comprising an a-frame support; the A-shaped frame support is sleeved on the outer surface of the pipe beam, and the welding surface of the A-shaped frame support extends along the circumferential direction of the pipe beam to form an annular welding seam.
3. The mining dump truck lifting beam of an electric wheel of claim 1, further comprising an outboard flitch and an inboard flitch; The outer veneer covers the surface of the outer web plate of the frame longitudinal beam, and the inner veneer covers the surface of the inner web plate of the frame longitudinal beam; and a fillet weld is formed between the inner edge of the outer flitch and the outer end face of the lifting shaft head, and a fillet weld is formed between the outer edge of the inner flitch and the inner end face of the lifting shaft head.
4. The electric wheel mining dump truck lifting beam of claim 3, further comprising a round tube; the circular tube is sleeved outside the tube beam, one end of the circular tube is connected with the tube beam through a fillet weld, and the other end of the circular tube is connected with the outer surface of the inner side flitch through a fillet weld.
5. The electric wheel mining dump truck lifting beam of claim 4, further comprising a transition ring; The transition ring is sleeved at the joint of the circular tube and the inner side flitch and is fixed with the circular tube and the inner side flitch through fillet weld.
6. The mining dump truck lifting beam for the electric wheel according to claim 1, wherein a mounting boss is arranged in the axial middle of the lifting shaft head, and the end face of the mounting boss is matched with the mounting face of the lifting cylinder bushing.
7. The frame is characterized by comprising the lifting beam of the electric wheel mining dump truck according to any one of claims 1-6.
8. An electric wheel mining dump truck which is characterized by comprising the lifting beam of the electric wheel mining dump truck according to any one of claims 1-6.

Description

Lifting beam, frame and electric wheel mining dump truck Technical Field The utility model relates to the technical field of mining dumpers with electric wheels. More particularly, the utility model relates to a lifting beam, a frame and an electric wheel mining dump truck. Background The electric wheel mining dump truck is used as core equipment for surface mining and large engineering construction, has the characteristics of high load, long continuous operation time and the like, and the reliability of a frame structure of the electric wheel mining dump truck directly influences the performance and the service life of the whole truck. At present, rigid frames are commonly adopted for vehicles, and are mainly divided into pure steel plate welding type and plate casting type combined type, wherein the steel casting is adopted in a stress complex area to enhance local strength and rigidity. The lifting beam is used as a lower fulcrum of the lifting oil cylinder and plays a key load transmission role in the loading, transporting and unloading processes of the vehicle. The traditional lifting beam is generally composed of a steel casting lifting shaft head and a pipe beam, wherein the lifting shaft head is used as a part of a frame longitudinal beam, is directly connected with the longitudinal beam through a welding seam, lifting force is completely born by the connecting welding seam, so that stress concentration at the welding seam is caused, the cracking risk exists, and once the cracking occurs, the repairing difficulty is high, and even the frame or the whole vehicle is possibly scrapped. In addition, the steel casting lifting shaft head is easy to generate casting defects in production, the defects are difficult to detect, and the casting period is long in batch production, so that the manufacturing efficiency of the whole vehicle is seriously affected. Moreover, the lifting shaft heads and the longitudinal beams are connected through partial welding seams, the load transmission path is single, and the welding seams bear all lifting force and are easy to fail due to fatigue or overload. The casting process of the lifting shaft head of the steel casting is difficult to avoid the defects of air holes, shrinkage porosity and the like, has long production period, and cannot meet the requirement of high-efficiency mass production. The traditional structure lacks of a dispersion design of the root stress of the lifting shaft head, so that the local rigidity of the frame is weak, and the structural deformation is easy to cause under long-term load. Therefore, it is necessary to design a technical solution that can overcome the above-mentioned drawbacks to a certain extent. Disclosure of utility model The utility model aims to provide a lifting beam, a frame and an electric wheel mining dump truck, wherein the lifting beam can reduce the risk of cracking of welding seams and prolong the service life of the frame. To achieve these objects and other advantages and in accordance with the purpose of the utility model, as embodied and broadly described herein, there is provided a lifting beam for a mining dump truck for an electric wheel, comprising a lifting shaft head and a pipe beam, wherein the lifting shaft head penetrates through corresponding through holes in an inner web and an outer web of a frame rail, and an outer circumferential surface is welded and fixed to edges of the through holes by circumferential weld joints, one end of the lifting shaft head located outside the frame rail is provided with a U-shaped groove, two opposite sides of the U-shaped groove are provided with shaft holes, one end of the lifting shaft head located inside the frame rail is connected with the pipe beam, a groove is formed at a connection between the pipe beam and the lifting shaft head, and the lifting shaft head and the pipe beam are welded in an insert lap joint structure. The welding surface of the A-shaped frame support extends along the circumference of the pipe beam to form an annular welding seam. Further, the method also comprises an outer flitch and an inner flitch; the outer side flitch covers the surface of the outer web plate of the frame longitudinal beam, the inner side flitch covers the surface of the inner web plate of the frame longitudinal beam, a fillet weld is formed between the inner edge of the outer side flitch and the outer end surface of the lifting shaft head, and a fillet weld is formed between the outer edge of the inner side flitch and the inner end surface of the lifting shaft head. The pipe is sleeved outside the pipe beam, one end of the pipe beam is connected with the pipe beam through a fillet weld, and the other end of the pipe beam is connected with the outer surface of the inner side flitch through a fillet weld. The transition ring is sleeved at the joint of the circular tube and the inner side flitch and is fixed with the circular tube and the inner side flitch through fillet weld. Furth