Axle housing arm of drive axle of backhoe loader

Abstract

The utility model discloses an axle housing arm of a drive axle of a backhoe loader. The axle housing arm comprises a shaft head, an axle tube, a frame mounting seat, a brake pad mounting seat, a fixed flange plate and a brake pad limiting seat, the brake pad mounting seat is light and thin, and the thickness of the brake pad mounting seat is 16-18 mm; a plurality of sawtooth-shaped recesses are formed in the side, close to a frame mounting seat, of the fixed flange plate in the circumferential direction, the positions of the sawtooth-shaped recesses and the positions of fixed bolt holes formed in the flange are staggered to ensure the connection strength of the fixed bolt holes, and therefore bolt hole bosses are formed in the appearance; four clamping bosses are arranged on the outer circle of the brake pad mounting seat, so that the axle housing arm can be conveniently clamped and positioned during machining; a brake pad limiting seat and an anti-rotating pin hole are arranged in an inner cavity of the brake pad mounting seat, the brake pad limiting seat is provided with three weight reduction notches, and the positions of the weight reduction notches and the position of the anti-rotating pin hole are staggered so as to ensure the strength of the anti-rotating pin hole. The device is simple in structure, light in weight, low in manufacturing cost and safe and reliable in operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to excavator drive axle technical field, especially is a excavator drive axle axle housing arm, concretely is the structure of axle housing arm mounting flange place and brake pad mounting seat place of excavator drive axle. BACKGROUND

[0002] At present, the axle housing of excavator drive axle is generally three-section type, mainly comprising axle housing bag and two axle housing arms; the axle housing arm of the prior art has design redundancy at some positions, such as the brake pad mounting seat place of axle housing arm, the thickness of brake pad mounting seat of excavator with load of 2-3 tons reaches about 30mm, and the relatively large thickness causes relatively heavy weight; in addition, the weight of axle housing arm mounting flange is also relatively heavy, which causes the overall weight of axle housing arm to be relatively heavy, and the material cost is relatively high, so optimization can be carried out to reduce manufacturing cost. SUMMARY

[0003] The utility model aims at providing a excavator drive axle axle housing arm which has simple structure, light weight, low manufacturing cost, long service life and safe and reliable operation.

[0004] In order to achieve the above object, the utility model discloses a excavator drive axle axle housing arm which comprises a shaft head 1, an axle pipe 2, a frame mounting seat 3, a brake pad mounting seat 4, a fixed flange plate 5 and a brake pad limiting seat 9; the brake pad mounting seat 4 is thin and light, and the thickness is 16-18mm; the fixed flange plate 5 is provided with a plurality of sawtooth-shaped recesses on the side close to the frame mounting seat 3 along the circumferential direction, the position of the sawtooth-shaped recesses is staggered with the position of the fixed bolt hole 7 provided on the flange to ensure the connecting strength of the fixed bolt hole 7, so as to form a bolt hole boss 8 in appearance; four clamping bosses 6 are provided on the outer circle of the brake pad mounting seat 4 to facilitate clamping and positioning during machining of the axle housing arm; the inner cavity of the brake pad mounting seat 4 is provided with the brake pad limiting seat 9 and an anti-rotation pin hole 10, the brake pad limiting seat 9 is provided with three weight-reducing notches 11, and the position of the weight-reducing notches 11 is staggered with the position of the anti-rotation pin hole 10 to ensure the strength at the anti-rotation pin hole 10.

[0005] The excavator drive axle axle housing arm with the above structure is light in weight through weight reduction optimization, and has the following technical features and advantages.

[0006] Advantages:

[0007] 1. The thin and light brake pad mounting seat 4 can obviously reduce the weight of the axle housing arm; in view of the fact that the brake pad mounting seat 4 is not conducive to clamping and machining due to the relatively small thickness, four clamping bosses 6 are arranged on the outer circle of the brake pad mounting seat 4 to effectively improve machining quality and efficiency;

[0008] 2、Fixed flange 5 is provided with multiple sawtooth recesses along the circumferential direction on the side close to the frame mounting seat 3, which can further reduce the weight of the axle housing arm, reduce the material cost and improve the economic benefit;

[0009] 3、The brake pad limiting seat 9 is optimized by setting the notch to reduce the weight, which can further reduce the weight of the axle housing arm, reduce the material cost and improve the economic benefit;

[0010] 4、The structure is simple and compact, the manufacturing cost is low, the operation is safe and reliable, and the service life is long. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a three-dimensional schematic view of the excavator loader drive axle housing arm.

[0012] Figure 2 is another three-dimensional schematic view of the excavator loader drive axle housing arm.

[0013] Figure 3 is Figure 2 the structure of the fixed flange side.

[0014] Figure 4 is Figure 1 the structure of the shaft head side.

[0015] The drawings show that the axle head 1, the axle pipe 2, the frame mounting seat 3, the brake pad mounting seat 4, the fixed flange 5, the clamping boss 6, the fixed bolt hole 7, the bolt hole boss 8, the brake pad limiting seat 9, the anti-rotation pin hole 10 and the weight-reducing notch 11. DETAILED DESCRIPTION

[0016] The specific embodiments of the excavator loader drive axle housing arm will be further described in detail below with reference to the drawings.

[0017] Figures 1-4 The excavator loader drive axle housing arm comprises an axle head 1, an axle pipe 2, a frame mounting seat 3, a brake pad mounting seat 4, a fixed flange 5 and a brake pad limiting seat 9; the brake pad mounting seat 4 is thin, and the thickness is 16-18 mm; the fixed flange 5 is provided with multiple sawtooth recesses along the circumferential direction on the side close to the frame mounting seat 3, the positions of the sawtooth recesses are staggered with the positions of the fixed bolt holes 7 provided on the flange to ensure the connection strength of the fixed bolt holes 7, so that the bolt hole boss 8 is formed on the appearance; four clamping bosses 6 are arranged on the outer circle of the brake pad mounting seat 4 to facilitate clamping and positioning during machining of the axle housing arm; the inner cavity of the brake pad mounting seat 4 is provided with the brake pad limiting seat 9 and the anti-rotation pin hole 10, the brake pad limiting seat 9 is provided with three weight-reducing notches 11, and the positions of the weight-reducing notches 11 are staggered with the position of the anti-rotation pin hole 10 to ensure the strength at the anti-rotation pin hole 10.

Claims

1. A excavator drive axle housing arm, comprising a shaft head (1), an axle tube (2), a frame mounting seat (3), a brake shoe mounting seat (4), a fixed flange (5) and a brake shoe limiting seat (9); characterized in that: The brake pad mounting seat (4) is thin and light, with a thickness of 16-18 mm; the fixed flange (5) is provided with a plurality of sawtooth-shaped recesses on the side close to the frame mounting seat (3) along the circumferential direction, the positions of the sawtooth-shaped recesses are staggered with the positions of the fixed bolt holes (7) provided on the flange to ensure the connecting strength of the fixed bolt holes (7), thereby forming bolt hole bosses (8) in the appearance; four clamping bosses (6) are provided on the outer circle of the brake pad mounting seat (4) to facilitate clamping and positioning during the machining of the axle housing arm; the inner cavity of the brake pad mounting seat (4) is provided with a brake pad limiting seat (9) and an anti-rotation pin hole (10), the brake pad limiting seat (9) is provided with three weight-reducing notches (11), the positions of the weight-reducing notches (11) are staggered with the positions of the anti-rotation pin hole (10) to ensure the strength at the anti-rotation pin hole (10).

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