CN211138955U - Rear suspension system of wide-body dump truck - Google Patents
Rear suspension system of wide-body dump truck Download PDFInfo
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- CN211138955U CN211138955U CN201922167837.6U CN201922167837U CN211138955U CN 211138955 U CN211138955 U CN 211138955U CN 201922167837 U CN201922167837 U CN 201922167837U CN 211138955 U CN211138955 U CN 211138955U
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- energy accumulator
- damper
- cylinder
- suspension cylinder
- suspension
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Abstract
The utility model discloses a rear suspension system of a wide-body dumper, belonging to the technical field of off-highway wide-body dumpers; the energy-saving device is characterized by comprising a first suspension cylinder, a first energy accumulator, a first damper, a second energy accumulator, a second damper, a pipeline and a second suspension cylinder; the suspension cylinder is arranged between the axle and the frame; the suspension cylinder is divided into an upper cavity and a lower cavity which are mutually independent, and the upper cavity and the lower cavity of the front suspension cylinder and the lower cavity of the rear suspension cylinder are respectively connected through a pipeline and are connected with a damper and an energy accumulator; when a vehicle is loaded, the suspension cylinder is compressed, the volume of the upper cavity is reduced, hydraulic oil in the upper cavity enters the energy accumulator, gas in the energy accumulator is compressed, and the pressure is increased; the volume of the lower cavity is increased, hydraulic oil in the energy accumulator enters the lower cavity of the suspension cylinder, the gas of the energy accumulator expands, and the pressure is reduced, so that the pressure change during empty and full loading is reduced.
Description
The technical field is as follows:
the utility model relates to an off-highway wide body tipper technical field, specifically say and a rear suspension system of wide body tipper.
Background art:
at present, a rear suspension system of a wide-body dump truck generally adopts a steel plate spring structure, part of manufacturers start to try an oil-gas suspension structure, and suspension cylinders on the same side of a frame are connected through a pipeline; the arrangement is simple, but because the load change of the vehicle under empty load is large (the difference is 5-7 times), the pressure change in the suspension cylinder is large, and the following problems exist in practical use: 1. the damping element is difficult to design, the damping is small when the damping element is fully loaded, and the damping effect is poor; when the vehicle is in no load, the damping is large, the motion of a suspension cylinder is blocked, and the tire is easy to slip; 2. the stroke of the empty and full load suspension cylinder is large; 3. the rigidity is large when the vehicle is fully loaded, and the smoothness of the vehicle is poor.
The utility model has the following contents:
the utility model aims at overcoming the not enough of above-mentioned prior art, provide a rear suspension system of wide-body tipper.
The utility model provides a technical scheme is: a rear suspension system of a wide-body dump truck is characterized by comprising a first suspension cylinder, a first energy accumulator, a first damper, a second energy accumulator, a second damper, a pipeline and a second suspension cylinder; the first suspension cylinder is arranged between the frame and the middle axle, and the second suspension cylinder is arranged between the frame and the rear axle; the first energy accumulator, the first damper, the second energy accumulator and the second damper are fixed on the frame; the upper cavity of the suspension cylinder on the same side of the frame is connected with the first damper through a pipeline; the lower cavity of the suspension cylinder is connected with the second damper through a pipeline; the first damper is connected with the first energy accumulator through a pipeline, and the second damper is connected with the second energy accumulator through a pipeline.
Furthermore, the suspension cylinder consists of a first sealing assembly, a cylinder cover, a piston rod, a second sealing assembly and a cylinder barrel; a first sealing assembly is arranged between the cylinder cover and the piston rod, the cylinder barrel and the cylinder cover enclose an annular lower cavity, and the piston rod and the cylinder barrel enclose a cylindrical upper cavity; the upper chamber is separated from the lower chamber by a second seal assembly.
Further, the ratio of the area of the lower cavity to the area of the upper cavity is 5: 8.
further, the charging volume ratio of the energy accumulator is 5: 1, pressure ratio of 3: 8.
the utility model has the advantages that: when a vehicle is loaded, the suspension cylinder is compressed, the volume of the upper cavity is reduced, hydraulic oil in the upper cavity enters the energy accumulator, gas in the energy accumulator is compressed, and the pressure is increased; the volume of the lower cavity is increased, hydraulic oil in the energy accumulator enters the lower cavity of the suspension cylinder, gas in the energy accumulator expands, the pressure is reduced, and the pressure change during empty and full loading is reduced; and simultaneously, the empty full load height difference and the full load rigidity can be reduced.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the suspension cylinder of the present invention;
fig. 3 is a graph of the spring load capacity of the suspension cylinder of the present invention;
figure 4 is a graph of spring rate for a suspension cylinder according to the present invention.
In the figure: the hydraulic suspension system comprises a first suspension cylinder 1, a first energy accumulator 2, a first damper 3, a second energy accumulator 4, a second damper 5, a pipeline 6, a second suspension cylinder 7, a first sealing assembly 11, a cylinder cover 12, a piston rod 13, a second sealing assembly 14 and a cylinder barrel 15.
The specific implementation mode is as follows:
for a better understanding and appreciation of the invention, specific embodiments thereof are described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a rear suspension system of a wide dump truck comprises a first suspension cylinder 1, a first energy accumulator 2, a first damper 3, a second energy accumulator 4, a second damper 5, a pipeline 6 and a second suspension cylinder 7; the first suspension cylinder 1 and the second suspension cylinder 7 are both composed of a first sealing component 11, a cylinder cover 12, a piston rod 13, a second sealing component 14 and a cylinder barrel 15, the first sealing component 11 is additionally arranged between the cylinder cover 12 and the piston rod 13, the cylinder barrel 15 and the cylinder cover 12 form an annular lower cavity A, and the piston rod 13 and the cylinder barrel 15 form a cylindrical upper cavity B; the upper chamber B is isolated from the lower chamber a by a second seal assembly 14, and the area ratio of the lower chamber a to the upper chamber B is 5: 8; a first suspension cylinder 1 is arranged between a frame and a middle axle, and a second suspension cylinder 7 is arranged between the frame and a rear axle; fixing the first energy accumulator 2, the first damper 3, the second energy accumulator 4 and the second damper 5 on the frame; the charging volume ratio of the energy accumulator is 5: 1, pressure ratio of 3: 8; the upper cavity B of the suspension cylinder on the same side of the frame is connected with the first damper 3 through a pipeline 6, and the lower cavity A of the suspension cylinder is connected with the second damper 5 through a pipeline 6; the first damper 3 is connected to the first accumulator 2 via a line 6, and the second damper 5 is connected to the second accumulator 4 via a line 6.
The utility model discloses a wide body tipper rear suspension system, when the vehicle operation, the hydraulic oil in the upper chamber B of suspension cylinder flows into or flows out first energy storage ware 2 through first attenuator 3, and the hydraulic oil in the upper chamber B flows into or flows out second energy storage ware 4 through second attenuator 5 to make the gas compression or the inflation in the energy storage ware, play the damping effect;
when the spring of the first suspension cylinder 1 arranged on the middle axle is stretched or compressed, the spring of the second suspension cylinder 7 arranged on the rear axle is compressed or stretched through hydraulic oil, so that a balancing effect is achieved;
when the vehicle is loaded, the load of the middle rear axle is gradually increased; the springs of the first suspension cylinder 1 and the second suspension cylinder 7 are compressed, the volume of the upper cavity B is reduced, hydraulic oil in the upper cavity flows into the first energy accumulator 2, and the pressure is increased; the volume of the lower cavity A is increased, the hydraulic oil in the second energy accumulator 4 flows into the lower cavity A, and the pressure is reduced;
as shown in FIGS. 3 and 4, the pressure of the upper chamber is 1.85MPa, the pressure of the lower chamber is 2.94MPa when no load occurs, the pressure of the upper chamber is 5.21MPa when full load occurs, the pressure of the lower chamber is 1.71MPa, the height difference of the empty and full load suspension cylinders is 60mm, the no-load rigidity is 1220N/mm, and the full load rigidity is 5600N/mm.
It should be understood that technical features not described in detail in the specification belong to the prior art. The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (4)
1. A rear suspension system of a wide-body dump truck is characterized by consisting of a first suspension cylinder (1), a first energy accumulator (2), a first damper (3), a second energy accumulator (4), a second damper (5), a pipeline (6) and a second suspension cylinder (7); the first suspension cylinder (1) is arranged between the frame and the middle axle, and the second suspension cylinder (7) is arranged between the frame and the rear axle; the first energy accumulator (2), the first damper (3), the second energy accumulator (4) and the second damper (5) are fixed on the frame; the upper cavity (B) of the suspension cylinder on the same side of the frame is connected with the first damper (3) through a pipeline (6); the lower cavity (A) of the suspension cylinder is connected with the second damper (5) through a pipeline (6); the first damper (3) is connected with the first energy accumulator (2) through a pipeline (6), and the second damper (5) is connected with the second energy accumulator (4) through the pipeline (6).
2. The rear suspension system of the wide dump truck according to claim 1, wherein the suspension cylinder is composed of a first sealing component (11), a cylinder cover (12), a piston rod (13), a second sealing component (14) and a cylinder barrel (15); a first sealing assembly (11) is arranged between the cylinder cover (12) and the piston rod (13), the cylinder barrel (15) and the cylinder cover (12) enclose an annular lower cavity (A), and the piston rod (13) and the cylinder barrel (15) enclose a cylindrical upper cavity (B); the upper chamber (B) is separated from the lower chamber (A) by a second seal assembly (14).
3. The rear suspension system of a wide dump truck according to claim 1 or 2, wherein the ratio of the area of the lower cavity (a) to the area of the upper cavity (B) is 5: 8.
4. the rear suspension system of a wide-body dump truck according to claim 1, wherein the charge volume ratio of the accumulator is 5: 1, pressure ratio of 3: 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922167837.6U CN211138955U (en) | 2019-12-06 | 2019-12-06 | Rear suspension system of wide-body dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922167837.6U CN211138955U (en) | 2019-12-06 | 2019-12-06 | Rear suspension system of wide-body dump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211138955U true CN211138955U (en) | 2020-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922167837.6U Active CN211138955U (en) | 2019-12-06 | 2019-12-06 | Rear suspension system of wide-body dump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211138955U (en) |
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2019
- 2019-12-06 CN CN201922167837.6U patent/CN211138955U/en active Active
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