Mine truck rear oil gas suspension connecting structure

Abstract

The utility model discloses a rear hydro-pneumatic suspension connecting structure of a mine truck, which comprises an oil cylinder lower support, an oil cylinder, an oil cylinder upper support, an energy accumulator support, an energy accumulator, an upper connecting plate, U-bolts, a frame longitudinal beam, an auxiliary frame, an auxiliary frame cross beam and a balance beam. The oil cylinder upper support is fixed on a frame longitudinal beam and an auxiliary frame, and the oil cylinder is fixed between the oil cylinder lower support and the oil cylinder upper support through a pin shaft; the energy accumulator support is fixed on the upper connecting plate, the frame longitudinal beam and the auxiliary frame through bolts, and the energy accumulator is fixed on the energy accumulator support through bolts. According to the utility model, the torsional rigidity of the rear end of the frame can be effectively improved, and the adverse effect of overlarge torsional deformation of the frame on the suspension is avoided; the generation of shear stress under the braking working condition is reduced, and the stability of the hydro-pneumatic suspension structure is ensured; the device is reasonable in structural design, easy to assemble and high in practicability.

Description

Technical Field

[0001] The utility model relates to a rear oil-gas suspension connection structure for a mining vehicle, belonging to the technical field of wide-body dump trucks. Background Art

[0002] Mining vehicles are heavy, have long continuous working hours, and work in extremely complex and harsh environments. The reliability of each subsystem will affect the service life of the vehicle. The rear oil-gas suspension is an extremely important device for mining vehicles. This device not only has to withstand the load impact brought by the cargo box, but also has to face the torsional deformation of the flexible frame chassis caused by complex working conditions. Most of the existing mining vehicle flexible frame rear axle oil-gas suspension connection methods are only connected to the frame longitudinal beam, or connected to the frame longitudinal beam and the subframe. There is a lack of crossbeams between the subframes, resulting in a large torsional deformation of the frame when the vehicle is fully loaded and turning, affecting the suspension geometry and performance. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a rear oil-gas suspension connection structure for a mining vehicle in view of the defects in the prior art, so as to improve the torsional rigidity of the rear end of the frame and avoid the adverse effect of excessive torsional deformation of the frame on the suspension.

[0004] To solve this technical problem, the utility model provides a rear oil-gas suspension connection structure for a mining vehicle, comprising a lower cylinder support, a cylinder, an upper cylinder support, an accumulator bracket, an accumulator, an upper connecting plate, riding bolts, a frame longitudinal beam, a subframe, a subframe cross beam and a balance beam. The lower cylinder support is fixed to the middle bridge and the rear axle by bolts, the upper cylinder support is fixed to the frame longitudinal beam and the subframe, and the cylinder is fixed between the lower cylinder support and the upper cylinder support by a pin shaft; the accumulator bracket is fixed to the upper connecting plate, the frame longitudinal beam and the subframe by bolts, and the accumulator is fixed to the accumulator bracket by bolts.

[0005] The upper part of the oil cylinder upper support is connected to the subframe and the subframe crossbeam by bolts through the upper connecting plate, and the fixing bolts pass through the oil cylinder upper support, the upper connecting plate, the subframe and the subframe crossbeam in sequence and are fastened by nuts.

[0006] The lower part of the oil cylinder upper support is connected with the frame longitudinal beam and the balance beam by bolts through the upper connecting plate, and the fixing bolts pass through the oil cylinder upper support, the upper connecting plate, the frame longitudinal beam and the balance beam in sequence and are fastened by nuts.

[0007] The riding bolts are respectively fixed on the sides of the supports on the four oil cylinders.

[0008] The sub-frame crossbeam is connected between the two sub-frames and is connected to the upper support of the oil cylinder through the sub-frame and the upper mounting connecting plate.

[0009] The upper connecting plate is connected to the frame longitudinal beam, the subframe, the subframe cross beam and the balance beam by bolts, wherein at the fixed end of the frame longitudinal beam, the bolts pass through the balance beam, the frame longitudinal beam, the upper connecting plate and the upper support of the oil cylinder in sequence from the inside to the outside; at the fixed end of the subframe, the bolts pass through the subframe cross beam, the subframe, the upper connecting plate and the upper support of the oil cylinder in sequence from the inside to the outside.

[0010] The oil cylinder lower support, the oil cylinder upper support and the auxiliary frame cross beam are all made by welding technology.

[0011] Beneficial effects: The oil cylinder upper support of the utility model is connected to the frame longitudinal beam and the subframe, connected to the fixed end of the subframe by a cross beam, and connected to the fixed end of the frame longitudinal beam by a balance beam. The entire oil-gas suspension connection forms a closed loop connection, which can effectively improve the torsional rigidity of the rear end of the frame and avoid the adverse effects of excessive torsional deformation of the frame on the suspension. Riding bolts are used to fix the frame longitudinal beam and the subframe on the side of the oil cylinder upper support, which in turn reduces the generation of shear stress under braking conditions and ensures the stability of the oil-gas suspension structure; the utility model has a reasonable structural design, is easy to assemble, and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the installation of the utility model;

[0013] Figure 2 It is a schematic front view of the structure of the utility model;

[0014] Figure 3 It is a left side view showing the structure of the utility model;

[0015] Figure 4 It is a schematic top view of the structure of the utility model;

[0016] Figure 5 It is a schematic diagram of the installation cross section of the utility model;

[0017] Figure 6 It is a schematic diagram of the installation structure of the upper connecting plate of the utility model.

[0018] In the figure: 1. lower support of the oil cylinder; 2. oil cylinder; 3. upper support of the oil cylinder; 4. accumulator bracket; 5. accumulator; 6. upper connecting plate; 7. riding bolt; 8. frame longitudinal beam; 9. subframe; 10. subframe cross beam; 11. balance beam. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-Figure 6As shown, the utility model provides a rear oil-gas suspension connection structure for a mining vehicle, comprising a cylinder lower support 1, a cylinder 2, a cylinder upper support 3, an accumulator bracket 4, an accumulator 5, an upper connecting plate 6, a riding bolt 7, a frame longitudinal beam 8, a subframe 9, a subframe cross beam 10 and a balance beam 11, wherein the cylinder lower support 1 is fixed to the middle bridge and the rear axle by bolts, the cylinder upper support 3 is fixed to the frame longitudinal beam 8 and the subframe 9, and the cylinder 2 is fixed between the cylinder lower support 1 and the cylinder upper support 3 by a pin; the accumulator bracket 4 is fixed to the upper connecting plate 6, the frame longitudinal beam 8 and the subframe 9 by bolts, and the accumulator 5 is fixed to the accumulator bracket 4 by bolts.

[0021] The upper part of the oil cylinder upper support 3 is connected to the subframe 9 and the subframe cross beam 10 by bolts through the upper connecting plate 6, and the fixing bolts pass through the oil cylinder upper support 3, the upper connecting plate 6, the subframe 9 and the subframe cross beam 10 in sequence and are fastened by nuts.

[0022] The lower part of the oil cylinder upper support 3 is connected to the frame longitudinal beam 8 and the balance beam 11 by bolts through the upper connecting plate 6, and the fixing bolts pass through the oil cylinder upper support 3, the upper connecting plate 6, the frame longitudinal beam 8 and the balance beam 11 in sequence and are fastened by nuts.

[0023] The riding bolts 7 are respectively fixed to the sides of the four oil cylinder upper supports 3 to prevent the oil cylinder upper supports 3 from lateral displacement with the frame longitudinal beams 8 and the sub-frame 9.

[0024] The sub-frame cross beam 10 is connected between the two sub-frames 9 and is connected to the upper support 3 of the oil cylinder through the sub-frame 9 and the upper connecting plate 6 .

[0025] The upper connecting plate 6 is connected to the frame longitudinal beam 8, the subframe 9, the subframe cross beam 10, and the balance beam 11 by bolts, wherein at the fixed end of the frame longitudinal beam 8, the bolts pass through the balance beam 11, the frame longitudinal beam 8, the upper connecting plate 6, and the upper support 3 of the oil cylinder from the inside to the outside in sequence; at the fixed end of the subframe 9, the bolts pass through the subframe cross beam 10, the subframe 9, the upper connecting plate 6, and the upper support 3 of the oil cylinder in sequence from the inside to the outside.

[0026] The oil cylinder lower support 1, the oil cylinder upper support 3 and the sub-frame cross beam 10 are all made by welding technology.

[0027] The utility model has reasonable design and is easy to assemble, can effectively improve the torsional rigidity of the rear end of the frame, avoids the adverse effect of excessive torsional deformation of the frame on the suspension, and also enhances the safety and reliability of the whole vehicle.

[0028] The above embodiments of the present invention are merely illustrative and not exclusive, and all modifications within the scope of the present invention or equivalent to the scope of the present invention are encompassed by the present invention.

Claims

1. A mining vehicle rear oil-gas suspension connection structure, characterized in that: The invention comprises a lower cylinder support (1), an oil cylinder (2), an upper cylinder support (3), an accumulator bracket (4), an accumulator (5), an upper connecting plate (6), a riding bolt (7), a frame longitudinal beam (8), a subframe (9), a subframe cross beam (10) and a balance beam (11). The lower cylinder support (1) is fixed to the middle bridge and the rear bridge by bolts, the upper cylinder support (3) is fixed to the frame longitudinal beam (8) and the subframe (9), and the oil cylinder (2) is fixed between the lower cylinder support (1) and the upper cylinder support (3) by a pin shaft; the accumulator bracket (4) is fixed to the upper connecting plate (6), the frame longitudinal beam (8) and the subframe (9) by bolts, and the accumulator (5) is fixed to the accumulator bracket (4) by bolts.

2. The rear oil-gas suspension connection structure for a mining vehicle according to claim 1 is characterized in that: The upper part of the oil cylinder upper support (3) is connected to the sub-frame (9) and the sub-frame cross beam (10) by bolts through an upper connecting plate (6), and the fixing bolts pass through the oil cylinder upper support (3), the upper connecting plate (6), the sub-frame (9) and the sub-frame cross beam (10) in sequence and are fastened by nuts.

3. The rear oil-gas suspension connection structure for a mining vehicle according to claim 1 is characterized in that: The lower part of the oil cylinder upper support (3) is connected to the frame longitudinal beam (8) and the balance beam (11) by bolts through the upper connecting plate (6), and the fixing bolts pass through the oil cylinder upper support (3), the upper connecting plate (6), the frame longitudinal beam (8) and the balance beam (11) in sequence and are fastened by nuts.

4. The rear oil-gas suspension connection structure for a mining vehicle according to claim 1 is characterized in that: The riding bolts (7) are respectively fixed on the sides of the four oil cylinder upper supports (3).

5. The rear oil-gas suspension connection structure for a mining vehicle according to claim 1 is characterized in that: The sub-frame cross beam (10) is connected between the two sub-frames (9), and is connected to the upper support (3) of the oil cylinder through the sub-frame (9) and the upper connecting plate (6).

6. The rear oil-gas suspension connection structure for a mining vehicle according to claim 1, characterized in that: The upper connecting plate (6) is connected to the frame longitudinal beam (8), the sub-frame (9), the sub-frame cross beam (10), and the balance beam (11) by bolts, wherein at the fixed end of the frame longitudinal beam (8), the bolts pass through the balance beam (11), the frame longitudinal beam (8), the upper connecting plate (6), and the oil cylinder upper support (3) in sequence from the inside to the outside; and at the fixed end of the sub-frame (9), the bolts pass through the sub-frame cross beam (10), the sub-frame (9), the upper connecting plate (6), and the oil cylinder upper support (3) in sequence from the inside to the outside.

7. The rear oil-gas suspension connection structure for a mining vehicle according to any one of claims 1 to 6, characterized in that: The oil cylinder lower support (1), the oil cylinder upper support (3) and the auxiliary frame cross beam (10) are all made by welding technology.

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