Differential housing for off-road vehicles

Abstract

The utility model discloses a differential mechanism shell for off -road vehicle relates to differential mechanism shell technical field, the utility model discloses a differential mechanism shell body is provided with the pivot in the inside, the differential mechanism shell body is provided with the heat abstractor in the inside, the heat abstractor includes the heat exchange groove of being arranged in the inside of differential mechanism shell body. The utility model discloses a heat abstractor that is constituted by spiral heat exchange pipe is arranged, and the low temperature cooling liquid in vehicle cooling system is pumped into the pipe through the liquid inlet pipe, and when the cooling liquid flows in the spiral pipeline, its flow path is significantly lengthened, and more sufficient, more lasting heat exchange is carried out with the high temperature differential mechanism shell body wall surface, thereby efficiently absorbs and takes away the large amount of heat produced when the differential mechanism operates, and effectively improves the heat dissipation efficiency, prevents the lubricating oil failure, gear abnormal wear and tear and sealing element aging etc. problem that leads to oil temperature is too high, effectively prolongs the service life of differential mechanism.

Description

Technical Field

[0001] This utility model belongs to the technical field of differential housing, and in particular relates to a differential housing for off-road vehicles. Background Technology

[0002] The differential housing for off-road vehicles is a key structural component installed in the middle of the vehicle's drive axle to house and protect the differential assembly. Its main function is to provide precise positioning and support for the internal differential gears, ensuring that power is transmitted normally to the left and right wheels, while also sealing the internal lubricating oil to prevent external contaminants from entering.

[0003] Existing differential housings for off-road vehicles still present several problems during use. For example, traditional off-road vehicle differential housings are mostly integrally cast structures. Under extreme off-road conditions, such as prolonged low-speed, high-torque climbing, the meshing of gears inside the differential generates a large amount of heat, causing the lubricating oil temperature to rise sharply. Traditional housings rely mainly on natural air cooling due to their limited surface area, resulting in low heat dissipation efficiency. Excessively high oil temperatures accelerate lubricating oil failure, causing abnormal wear on gears and bearings, and even leading to aging and oil leakage of seals, severely shortening the service life of the differential. When traversing unpaved roads, especially rocky or rugged terrain, the protruding differential housing is highly susceptible to direct collisions and scrapes with ground obstacles. Existing housings generally lack specialized protective designs; severe impacts can cause deformation and damage to the housing, or even render the delicate internal differential assembly unusable, posing significant driving safety risks and potential property damage.

[0004] To address these issues, we provide a differential housing for off-road vehicles. Utility Model Content

[0005] The purpose of this utility model is to provide a differential housing for off-road vehicles. Through the cooperation of a heat dissipation mechanism and a protective mechanism, it solves the problems of low heat dissipation efficiency, excessively high oil temperature accelerating lubricant failure, and lack of special protective design in existing differential housings.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a differential housing for off-road vehicles, comprising a differential housing body, a rotating shaft disposed inside the differential housing body, a heat dissipation mechanism disposed inside the differential housing body, the heat dissipation mechanism comprising a heat exchange groove formed inside the differential housing body, a heat exchange pipe disposed inside the heat exchange groove, a connecting component connecting to one end of the heat exchange pipe, and a protective mechanism disposed outside the differential housing body, the protective mechanism comprising a mounting plate fixedly connected to the top and bottom of the differential housing body, a mounting component disposed inside the mounting plate, and a protective shell disposed on the surface of the differential housing body.

[0008] The present invention is further configured such that both the heat exchange groove and the heat exchange tube are spiral in shape, and the surface of the protective shell is provided with an arc-shaped groove adapted to the connecting component.

[0009] The present invention is further configured such that the connecting component includes an inlet pipe connected to one end of the heat exchange tube and an outlet pipe connected to the other end of the heat exchange tube.

[0010] The present invention is further configured such that there are two protective shells, both of which are semi-circular in shape.

[0011] The present invention is further configured such that the mounting component includes a first mounting block disposed inside the mounting plate and a second mounting block disposed inside the first mounting block, wherein the mounting plate, the first mounting block and the second mounting block are all provided with mounting through holes, and mounting bolts are threadedly connected inside the mounting through holes.

[0012] The present invention is further configured such that a heat dissipation assembly is provided on the outside of the differential housing, the heat dissipation assembly including heat dissipation fins disposed inside the protective housing, and a limiting plate fixedly connected to the top and bottom of the heat dissipation fins.

[0013] The present invention has the following beneficial effects.

[0014] 1. This utility model, by setting up a heat dissipation mechanism composed of spiral heat exchange tubes, pumps the low-temperature coolant from the vehicle's cooling system into the tubes through the inlet pipe. When the coolant flows in the spiral tubes, its flow path is significantly extended, allowing for more thorough and sustained heat exchange with the high-temperature differential housing wall. This efficiently absorbs and removes the large amount of heat generated during differential operation, effectively improving heat dissipation efficiency and preventing problems such as lubricating oil failure, abnormal gear wear, and seal aging caused by excessively high oil temperature, thus effectively extending the service life of the differential.

[0015] 2. Through the design of the protective mechanism, when the vehicle chassis is impacted, the protective shell acts as the first line of defense to absorb the impact force. The impact force is then distributed and transmitted to the mounting plate and differential housing through the interlocking first and second mounting blocks, transforming the concentrated point impact into a distributed load. This effectively avoids local deformation or cracking of the differential housing, providing strong armor protection for the internal precision assemblies and effectively reducing the risk of damage during off-road driving.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a perspective view of a differential housing for an off-road vehicle.

[0019] Figure 2 This is a structural diagram of the heat dissipation mechanism in the housing of a differential for off-road vehicles.

[0020] Figure 3 This is a front view of a heat exchange groove in a differential housing for an off-road vehicle.

[0021] Figure 4 This is a structural diagram of the protective mechanism in the differential housing of an off-road vehicle.

[0022] Figure 5 This is a structural diagram of the heat dissipation component in a differential housing for an off-road vehicle.

[0023] In the attached diagram: 1. Differential housing; 2. Rotary shaft; 3. Heat dissipation mechanism; 31. Heat exchange tank; 32. Heat exchange pipe; 33. Connecting assembly; 331. Liquid inlet pipe; 332. Liquid outlet pipe; 4. Protective mechanism; 41. Mounting plate; 42. Mounting assembly; 421. First mounting block; 422. Second mounting block; 43. Protective shell; 5. Heat dissipation assembly; 51. Heat dissipation fins; 52. Limiting plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0025] Please see Figures 1-5This utility model is a differential housing for off-road vehicles, including a differential housing body 1, a rotating shaft 2 inside the differential housing body 1, a heat dissipation mechanism 3 inside the differential housing body 1, the heat dissipation mechanism 3 including a heat exchange groove 31 opened inside the differential housing body 1, a heat exchange pipe 32 disposed inside the heat exchange groove 31, a connecting component 33 connected to one end of the heat exchange pipe 32, and a protective mechanism 4 disposed outside the differential housing body 1, the protective mechanism 4 including a mounting plate 41 fixedly connected to the top and bottom of the differential housing body 1, a mounting component 42 disposed inside the mounting plate 41, and a protective shell 43 disposed on the surface of the differential housing body 1.

[0026] Specifically: The core function of the cooling mechanism 3 is to efficiently remove the heat generated during differential operation through active heat exchange, preventing the lubricating oil temperature from becoming too high. The vehicle's coolant is pumped into the spiral heat exchange pipe 32 through the inlet pipe 331. Because the pipe is located inside the differential housing 1 and is thermally isolated from the internal lubricating oil, the coolant flows through the meandering spiral pipe and undergoes efficient heat exchange with the high-temperature differential housing 1 through the pipe wall, thereby absorbing and removing a large amount of heat. Finally, the heated coolant flows out from the outlet pipe 332 and returns to the vehicle's cooling system for heat dissipation. This cycle is repeated to achieve continuous cooling of the differential. The main function of the protective mechanism 4 is to protect the vulnerable differential. The differential housing 1 provides a robust external armor to protect against direct impacts and scratches during off-road driving. First, align the first mounting block 421 connected to one side of the protective shell 43 and insert it into the mounting slot on the mounting plate 41. Then, align the second mounting block 422 connected to the other side of the protective shell 43 and insert it into the mounting slot of the first mounting block 421. Finally, use mounting bolts to pass through the aligned mounting holes and tighten them to securely assemble the two semi-circular protective shells 43 onto the outside of the differential housing 1. When the vehicle chassis bottoms out or collides, the protective shell 43 will absorb the impact first and disperse the force, thereby protecting the internal differential housing 1 assembly from direct damage. Example

[0027] Please see Figures 1-5Based on Embodiment 1, both the heat exchange tank 31 and the heat exchange tube 32 are spiral-shaped. The protective shell 43 has an arc-shaped groove on its surface that matches the connecting component 33. The connecting component 33 includes an inlet pipe 331 connected to one end of the heat exchange tube 32 and an outlet pipe 332 connected to the other end of the heat exchange tube 32. There are two protective shells 43, both of which are semi-circular. The mounting component 42 includes a first mounting block 421 disposed inside the mounting plate 41 and a second mounting block 422 disposed inside the first mounting block 421. The mounting plate 41 has a mounting through groove adapted to the first mounting block 421, and the first mounting block 421 has a mounting through groove adapted to the second mounting block 422. The mounting slots are compatible with the mounting plate 41, the first mounting block 421 and the second mounting block 422. The mounting through holes are opened inside the mounting through holes and the mounting bolts are threaded inside the mounting through holes. The four first mounting blocks 421 are fixedly connected to the right side of the protective shell 43, and the four second mounting blocks 422 are fixedly connected to the left side of the protective shell 43. The differential housing 1 is provided with a heat dissipation assembly 5. The heat dissipation assembly 5 includes heat dissipation fins 51 set inside the protective shell 43 and limiting plates 52 fixedly connected to the top and bottom of the heat dissipation fins 51. The protective shell 43 is provided with a limiting slot that is compatible with the limiting plate 52. The protective shell 43 and the heat dissipation fins 51 are fixedly connected by fixing bolts.

[0028] Specifically: By setting the spiral heat exchange pipe 32, the flow time of the coolant in the heat exchange pipe 32 is extended, improving the heat exchange effect. By setting the connecting component 33, the heat exchange pipe 32 is connected to the vehicle's coolant system, allowing the coolant to flow in and out of the heat exchange pipe 32. By setting the mounting component 42, the first mounting block 421 is inserted into the mounting slot of the mounting plate 41, and then the second mounting block 422 is inserted into the mounting slot of the first mounting block 421 and fixed with mounting bolts, thus completing the installation of the protective shell 43. By setting the heat dissipation component 5, the heat dissipation fins 51 are installed in the protective shell 43. After the protective shell 43 is installed in place, it assists in the heat dissipation of the differential housing 1.

[0029] The working principle of this utility model is as follows: Align the first mounting block 421 connected to one side of the protective shell 43 with the mounting through slot on the mounting plate 41, then align the second mounting block 422 connected to the other side of the protective shell 43 with the mounting slot of the first mounting block 421 that has been placed in place, and finally, use mounting bolts to pass through the mounting through holes of the three aligned and tighten them, so that the two semi-circular protective shells 43 can be firmly assembled on the outside of the differential housing 1. When the vehicle chassis bottoms out or collides, the protective shell 43 will first bear the impact and disperse the force.

[0030] When the differential generates high temperature due to high-speed gear meshing, the low-temperature coolant in the vehicle's cooling system is pumped into the heat exchange pipe 32, which is spirally wound inside the differential housing 1, through the inlet pipe 331. During the flow of the coolant in the spiral pipe, it continuously and fully exchanges heat with the high-temperature housing wall, absorbing and carrying away a large amount of heat. The heated coolant is finally returned to the vehicle's main cooling system through the outlet pipe 332 to complete the heat dissipation cycle, thereby achieving active and efficient cooling of the differential.

[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A differential housing for off-road vehicles, comprising a differential housing body (1), characterized in that: The differential housing (1) has a rotating shaft (2) inside. The differential housing (1) is provided with a heat dissipation mechanism (3). The heat dissipation mechanism (3) includes a heat exchange groove (31) opened inside the differential housing (1), a heat exchange pipe (32) arranged inside the heat exchange groove (31), and a connecting component (33) connected to one end of the heat exchange pipe (32). The differential housing (1) is provided with a protective mechanism (4) on its exterior. The protective mechanism (4) includes a mounting plate (41) fixedly connected to the top and bottom of the differential housing (1), a mounting component (42) disposed inside the mounting plate (41), and a protective shell (43) disposed on the surface of the differential housing (1).

2. The differential housing for off-road vehicles according to claim 1, characterized in that: The heat exchange tank (31) and the heat exchange tube (32) are both spiral in shape, and the protective shell (43) has an arc-shaped groove on its surface that is compatible with the connecting component (33).

3. The differential housing for off-road vehicles according to claim 1, characterized in that: The connecting component (33) includes an inlet pipe (331) connected to one end of the heat exchange tube (32) and an outlet pipe (332) connected to the other end of the heat exchange tube (32).

4. The differential housing for off-road vehicles according to claim 1, characterized in that: The number of protective shells (43) is two, and the two protective shells (43) are both semi-circular rings.

5. A differential housing for off-road vehicles according to claim 1, characterized in that: The mounting assembly (42) includes a first mounting block (421) disposed inside the mounting plate (41) and a second mounting block (422) disposed inside the first mounting block (421). The mounting plate (41), the first mounting block (421) and the second mounting block (422) are all provided with mounting through holes, and mounting bolts are threaded into the mounting through holes.

6. A differential housing for off-road vehicles according to claim 1, characterized in that: The differential housing (1) is provided with a heat dissipation assembly (5) on its exterior. The heat dissipation assembly (5) includes heat dissipation fins (51) disposed inside the protective housing (43) and a limiting plate (52) fixedly connected to the top and bottom of the heat dissipation fins (51).

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