CN221250411U - Large tonnage wet loader drive axle - Google Patents
Large tonnage wet loader drive axle Download PDFInfo
- Publication number
- CN221250411U CN221250411U CN202323607094.2U CN202323607094U CN221250411U CN 221250411 U CN221250411 U CN 221250411U CN 202323607094 U CN202323607094 U CN 202323607094U CN 221250411 U CN221250411 U CN 221250411U
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- Prior art keywords
- brake
- cavity
- hub
- hole
- cooling
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- 238000001816 cooling Methods 0.000 claims abstract description 53
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000012809 cooling fluid Substances 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 239000000110 cooling liquid Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Braking Arrangements (AREA)
Abstract
The utility model discloses a large tonnage wet loader drive axle, comprising: axle housing, brake assembly, support shaft, and hub; the brake assembly has a brake housing, a friction plate assembly located within the brake housing and acting on the hub, and a piston axially sliding and acting on the friction plate assembly; the brake shell is provided with an exhaust hole, a brake oil hole, a cooling oil inlet hole and a cooling oil outlet hole, a second cavity is formed between the inner wall and the piston, and a first cavity is formed between the inner wall and the hub as well as the support shaft; the brake fluid enters the second cavity from the brake oil hole and is regulated through the exhaust hole, and the cooling fluid enters the first cavity from the cooling oil inlet hole and is discharged from the cooling oil outlet hole. The utility model can carry out forced circulation cooling in the brake shell, reduce the temperature in the brake shell, maintain the temperature of cooling oil in the brake shell at a lower level, shorten the braking distance and improve the safety of the whole vehicle.
Description
Technical Field
The utility model relates to a loader drive axle, belongs to the field of engineering machinery, and particularly relates to a large-tonnage wet loader drive axle.
Background
The drive axle is an important component part in the vehicle, and can reduce the rotating speed input from the gearbox through main transmission and wheel edge deceleration and increase torque so as to meet the requirements of running and operation speed and traction force of the host machine.
The conventional wet loader transaxle mainly includes an axle housing 10, a brake member, a support shaft 60, and a hub 40, which are connected with each other by bolts, respectively; when a large tonnage loader is assembled, such as 7 tons and more, the support shaft 60 and the axle housing 10 are connected by bolts only, so that the bolts bear large shearing force and the risk of fracture exists; in addition, the brake component is connected with the axle housing 10, the inner cavity of the brake component is communicated with the inner cavity of the hub reduction gear, and the brake component is air-cooled by forming a large inner cavity structure, so that the cooling mode is poor in effect, heat cannot be timely dissipated easily, the problems that the temperature of a friction plate and a brake disc is too high, the braking distance is too long and the like are easily caused, namely, the kinetic energy is large before braking due to large load of a large-tonnage loader, the kinetic energy converted heat energy is high in the braking process, the heat energy cannot be diffused, the friction coefficient of the friction plate and the brake disc is increased, the braking distance is longer, and the potential safety hazard is more prominent.
Disclosure of Invention
The utility model aims to provide a large-tonnage wet loader drive axle which is used for carrying out forced circulation cooling on the inside of a brake shell, reducing the temperature in the brake shell, keeping the temperature of cooling oil in the brake shell at a lower level, shortening the braking distance and improving the safety of the whole vehicle.
To achieve the above object, the present large tonnage wet loader transaxle includes: axle housing, brake assembly, support shaft, and hub;
The hub is fixedly connected with the driving shaft and is rotationally positioned at the outer side of the supporting shaft;
The brake assembly has a brake housing, a friction plate assembly located within the brake housing and acting on the hub, and a piston axially sliding and acting on the friction plate assembly;
the bolts penetrate through the supporting shaft end side and the brake shell end side and are fixed on the axle shell end side through threads;
The brake shell is provided with an exhaust hole, a brake oil hole, a cooling oil inlet hole and a cooling oil outlet hole, a second cavity is formed between the inner wall and the piston, and a first cavity is formed between the inner wall and the hub as well as the support shaft;
The brake fluid enters the second cavity from the brake oil hole and is regulated through the exhaust hole, and the cooling fluid enters the first cavity from the cooling oil inlet hole and is discharged from the cooling oil outlet hole.
Further, a floating oil seal for sealing the first cavity is arranged between the hub and the brake shell, and a framework oil seal for sealing the first cavity is arranged between the floating oil seal and the support shaft.
Further, a temperature sensor connected with the controller is arranged in the first cavity;
The cooling oil tank conveys cooling liquid into the first cavity through the circulating pump, and the controller controls the action of the circulating pump after receiving the temperature signal.
Further, the hub end side is of a spline structure and is in sliding fit with the friction plate assembly.
Preferably, a spigot is arranged at the end of the axle housing;
the side of the supporting shaft end is provided with a notch which is matched and butted with the axle housing.
Compared with the prior art, the large-tonnage wet loader drive axle is connected with the cooling oil tank through the first cavity, forced cooling is performed under the action of the circulating pump, namely, cooling liquid is circularly cooled in the cooling oil tank and then enters the first cavity through the cooling oil inlet hole, so that the temperature in the brake shell is reduced, the temperature of cooling oil in the brake shell is maintained at a lower level, the friction coefficient between the friction plate group of the wet type brake and the brake disc is increased, the braking force is improved, the braking distance is shortened, and the safety of the whole vehicle is improved; the cooling liquid is discharged into the cooling oil tank from the cooling oil outlet for circulating cooling, so that the cooling liquid is suitable for a large-tonnage drive axle;
Because the floating oil seal which seals the first cavity is arranged between the hub and the brake shell and the framework oil seal which seals the first cavity is arranged between the hub and the support shaft, the floating oil seal can also isolate the inside of the brake assembly from the outside, so that the forced cooling effect is improved; the framework oil seal can reduce the capacity of the first cavity, so that the first cavity of the brake assembly is prevented from being communicated with the inner cavity of the wheel-side speed reducer, and the circulation speed of cooling liquid in the first cavity can be increased, so that the internal temperature of the brake assembly is maintained at a lower level;
The spigot on the axle housing is embedded into the notch at the side of the supporting shaft end, so that the contact area can be increased, the connection positioning effect between the axle housing and the supporting shaft is improved, and the axle housing can bear larger shearing force; in addition, the spline structure at the hub end side is assembled with the friction plate assembly in a sliding way, so that torque transmission can be achieved, and the braking effect is improved.
Drawings
FIG. 1 is an overall front view of the present utility model;
FIG. 2 is a schematic view of the coolant and brake fluid flow of the present utility model;
FIG. 3 is a schematic illustration of a brake housing of the present utility model;
FIG. 4 is a schematic illustration of a center axle housing of the present utility model;
FIG. 5 is a schematic view of a support shaft according to the present utility model;
in the figure: 10. axle housing, 11, spigot;
20. The brake comprises a brake shell, 21, a piston, 22, a friction plate assembly, 23, a floating oil seal, 24, a cooling oil inlet hole, 25, a cooling oil outlet hole, 26, a brake oil hole, 27 and an exhaust hole;
31. a first cavity, 32, a second cavity;
40. A hub;
50. A framework oil seal;
60. A support shaft, 61, a notch;
71. Cooling oil tank, 72, brake oil tank.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.
As shown in fig. 1, 2 and 3, the large tonnage wet loader drive axle comprises: axle housing 10, brake assembly, support shaft 60, and hub 40;
The bolts penetrate through the end side of the supporting shaft 60, the end side of the brake housing 20 is fixed on the end side of the axle housing 10 through threads, and the hub 40 is fixedly connected with the driving shaft and rotatably positioned on the outer side of the supporting shaft 60;
the brake assembly has a brake housing 20, a friction plate assembly 22 located within the brake housing 20 and acting on a hub 40, and a piston 21 axially sliding and acting on the friction plate assembly 22;
the brake housing 20 is provided with an exhaust hole 27, a brake oil hole 26, a cooling oil inlet hole 24 and a cooling oil outlet hole 25, a second cavity 32 is formed between the inner wall and the piston 21, and a first cavity 31 for introducing cooling liquid is formed between the inner wall and the hub 40 as well as the support shaft 60;
the brake fluid enters the second cavity 32 from the brake oil hole 26, and the cooling fluid enters the first cavity 31 from the cooling oil inlet hole 24 and is discharged from the cooling oil outlet hole 25;
Specifically, the axle housing 10 is a main supporting structure, and the driving shaft is positioned in the main supporting structure, and one end of the driving shaft extends out to be connected with the hub 40 so as to ensure power transmission; the supporting shaft 60 plays a supporting role, is coaxially sleeved on the outer side of the driving shaft, and the supporting shaft 60, the brake shell 20 and the axle housing 10 are connected with each other;
In the brake assembly, the friction plate assembly 22 acts on the brake disc of the hub 40 to convert the kinetic energy of the vehicle into heat energy through friction, thereby realizing the deceleration or stop of the vehicle; during braking, when the brake pedal is depressed, under the action of a hydraulic system, the piston 21 in the brake assembly pushes the friction plate group 22 to be in contact with the brake disc or the brake drum, so that friction force is generated, and when the brake pedal returns to the initial position, the piston 21 is separated from the friction plate assembly 22;
The number of the brake oil holes 26, the cooling oil inlet holes 24 and the cooling oil outlet holes 25 can be multiple; the brake oil hole 26 is connected with a brake oil tank 72 through a hydraulic system, and the cooling oil inlet hole 24 and the cooling oil outlet hole 25 are connected with a cooling oil tank 71 through a circulating pump; the brake housing 20 can be provided with the exhaust hole 27 communicated with the first cavity 31, so that air in the first cavity 31 can be ensured to enter and exit, the whole coordination is ensured, and the brake fluid can not be discharged from the exhaust hole 27;
When the large-tonnage wet loader drive axle is braked, brake oil enters the first cavity 31 through a hydraulic system and drives the piston 21 to push the friction plate to move to contact with the hub 40 so as to generate friction force; the second cavity 32 is connected with the cooling oil tank 71, forced cooling is carried out under the action of a circulating pump, namely, cooling liquid is circularly cooled in the cooling oil tank 71, and then enters the second cavity 32 through the cooling oil inlet hole 24, so that the temperature in the brake shell 20 is reduced, the temperature of cooling oil in the brake shell 20 is maintained at a lower level, the friction coefficient between the friction plate group 22 and the brake disc of the wet brake is increased, the braking force is improved, the braking distance is shortened, and the safety of the whole vehicle is improved; the cooling liquid is discharged from the cooling oil outlet hole 25 into the cooling oil tank 71, and is circulated for cooling.
As shown in fig. 1, a floating oil seal 23 sealing the first cavity 31 is further arranged between the hub 40 and the brake housing 20, and a framework oil seal 50 sealing the first cavity 31 is arranged between the floating oil seal and the support shaft 60;
Specifically, a mounting groove for placing the floating oil seal 23 may be provided on the hub 40, and a plurality of oil seal seats for placing the skeleton oil seal 50 may be provided on the outer side of the support shaft 60;
The floating oil seal 23 and the framework oil seal 50 not only seal the first cavity 31, but also isolate the inside of the brake assembly from the outside by the floating oil seal 23, so that the forced cooling effect is improved;
The framework oil seal 50 separates the inner cavity of the brake housing 20 from the inner cavity of the wheel-side reducer to form a closed and independent first cavity 31, so that the capacity of the first cavity 31 can be reduced, the communication between the second inner cavity 32 of the brake assembly and the inner cavity of the wheel-side reducer is avoided, and the circulation speed of cooling liquid in the first cavity 31 can be increased, so that the internal temperature of the brake assembly is maintained at a lower level.
Further, a temperature sensor connected with the controller is arranged in the first cavity 31;
the cooling oil tank 71 conveys cooling liquid into the first cavity 31 through the circulating pump, and the controller controls the action of the circulating pump after receiving the temperature signal;
Specifically, the cooling liquid is stored in the cooling oil tank 71 and is transported by the circulation pump;
The temperature sensor can monitor the temperature in the first cavity 31 in real time, when the loader brakes, and when the friction temperature exceeds a set range due to the fact that the friction plate acts on the brake disc of the hub 40, the controller receives a temperature signal, and controls the circulating pump to start, namely when the temperature is too high, the output power of the circulating pump is increased, the speed of cooling liquid entering the cooling oil tank 71 is increased, when the temperature is higher, the speed of cooling liquid entering the cooling oil tank 71 is faster, the temperature of cooling liquid inside the brake assembly is maintained at a lower level, the friction coefficient between the friction plate group 22 of the wet brake and the brake disc is increased, and the braking force is improved.
Further, the hub 40 is of a spline structure on the end side and is slidably assembled with the friction plate assembly 22;
Specifically, the spline structure at the end of the hub 40 is slidably assembled with the friction plate assembly 22, so that torque transmission can be achieved, and braking effect can be improved.
As shown in fig. 4 and 5, in the preferred embodiment, a spigot 11 is arranged at the end of the axle housing 10;
a notch 61 matched and butted with the axle housing 10 is arranged at the end side of the supporting shaft 60;
Specifically, the spigot 11 is a coaxially arranged and convex ring structure, and the notch 61 is a coaxially arranged and concave notch 61; when the supporting shaft 60 and the axle housing 10 are assembled, the spigot 11 on the axle housing 10 is embedded into the notch 61 at the end side of the supporting shaft 60, so that the contact area can be increased, the connection positioning effect between the axle housing 10 and the supporting shaft 60 is improved, and the axle housing can bear larger shearing force.
In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Claims (5)
1. Large tonnage wet loader drive axle, characterized in that it comprises: an axle housing (10), a brake assembly, a support shaft (60), and a hub (40);
The hub (40) is fixedly connected with the driving shaft and is rotationally positioned at the outer side of the supporting shaft (60);
The brake assembly has a brake housing (20), a friction plate assembly (22) located within the brake housing (20) and acting on a hub (40), and a piston (21) axially sliding and acting on the friction plate assembly (22);
the bolts penetrate through the end side of the supporting shaft (60), and the end side of the brake shell (20) is fixed on the end side of the axle shell (10) through threads;
The brake shell (20) is provided with an exhaust hole (27), a brake oil hole (26), a cooling oil inlet hole (24) and a cooling oil outlet hole (25), a second cavity (32) is formed between the inner wall and the piston (21), and a first cavity (31) is formed between the inner wall and the hub (40) and the support shaft (60);
Brake fluid enters the second cavity (32) from the brake oil hole (26) and is regulated through the exhaust hole (27), and cooling fluid enters the first cavity (31) from the cooling oil inlet hole (24) and is discharged from the cooling oil outlet hole (25).
2. The large tonnage wet loader drive axle according to claim 1, wherein a floating oil seal (23) sealing the first cavity (31) is provided between the hub (40) and the brake housing (20), and a skeleton oil seal (50) sealing the first cavity (31) is provided between the floating oil seal and the support shaft (60).
3. The large tonnage wet loader drive axle according to claim 1, characterized in that a temperature sensor connected with a controller is arranged in the first cavity (31);
The cooling oil tank (71) conveys cooling liquid into the first cavity (31) through the circulating pump, and the controller controls the action of the circulating pump after receiving the temperature signal.
4. The large tonnage wet loader drive axle according to claim 2, wherein the hub (40) is splined on its end side and is slidingly mounted with the friction plate assembly (22).
5. The large tonnage wet loader drive axle according to any one of claims 1 to 4, characterized in that a spigot (11) is provided at the end of the axle housing (10);
The end side of the supporting shaft (60) is provided with a notch (61) which is matched and butted with the axle housing (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323607094.2U CN221250411U (en) | 2023-12-28 | 2023-12-28 | Large tonnage wet loader drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323607094.2U CN221250411U (en) | 2023-12-28 | 2023-12-28 | Large tonnage wet loader drive axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221250411U true CN221250411U (en) | 2024-07-02 |
Family
ID=91653812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323607094.2U Active CN221250411U (en) | 2023-12-28 | 2023-12-28 | Large tonnage wet loader drive axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221250411U (en) |
-
2023
- 2023-12-28 CN CN202323607094.2U patent/CN221250411U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |