A commercial vehicle axle assembly structure

Abstract

This utility model provides a commercial vehicle axle assembly structure, including an axle tube, a mounting base, and a base plate. The mounting base is rotatably connected to the end of the axle tube, and the base plate is fixed to the axle tube. The mounting base is connected to a gear ring, and an ABS sensor is mounted on the base plate. The gear ring is positioned opposite to the ABS sensor, and a fixing plate is connected to the side wall of the ABS sensor. The fixing plate has a mounting hole. The assembly also includes a positioning post made of plastic. The base plate has a positioning hole, which corresponds to the mounting hole. An elastic hook is connected to the end of the positioning post, and a pressure plate is connected to the outer wall of the positioning post. The positioning post passes through the mounting hole and into the positioning hole, causing the elastic hook to abut against the surface of the base plate and the pressure plate to abut against the fixing plate. This achieves the goal of overcoming the influence of harsh environments and enabling convenient and reliable installation and removal of the ABS sensor.

Description

Technical Field

[0001] This utility model relates to commercial vehicle axles, and more particularly, to a commercial vehicle axle assembly structure. Background Technology

[0002] In modern vehicle braking systems, the anti-lock braking system (ABS) is one of the key components ensuring driving safety. As the core sensing element of this system, the ABS sensor's main function is to monitor the wheel speed in real time and transmit signals to the electronic control unit to determine if the wheel is about to lock up. To ensure the accuracy of signal acquisition, the ABS sensor must maintain a precise and stable mounting gap with the toothed ring on the wheel.

[0003] To achieve the aforementioned precise positioning, existing technologies typically employ rigid connections to secure the ABS sensor. For example, Chinese utility model patent CN203438775U discloses an axle assembly that includes a connecting hole on the axle tube flange and a separate mounting base installed within this hole. The mounting base has bolt holes, and the ABS sensor is fastened to the mounting base by bolts passing through these bolt holes. This bolt-fixing method provides reliable clamping force, ensuring the installation accuracy and stability of the ABS sensor in its initial state.

[0004] However, the inventors discovered in practice that the aforementioned prior art has the following shortcomings that urgently need to be addressed in actual use and maintenance:

[0005] First, the working environment of ABS sensors is extremely harsh. They are usually installed near the wheels and brakes, and are exposed to rainwater, mud, and salt water sprayed for snow melting in winter, among other complex conditions.

[0006] Secondly, the bolt-fixing structure used in the above-mentioned scheme is difficult to resist corrosion from harsh environments. Moisture and impurities mixed with salt and sand can easily penetrate between the bolt and the threaded pair of the fixing hole through the mating gap. Over time, under the influence of humid heat and salt spray, severe rust and electrochemical corrosion will occur between the bolt and the fixing hole, eventually forming solidified material, causing the bolt to get stuck or even "rusted to death" with the fixing seat.

[0007] Third, the aforementioned defects pose significant challenges to subsequent repair and replacement work. When a failed ABS sensor needs replacement, repair personnel must apply immense disassembly torque to the rusted bolts within the confined space under the vehicle. This is not only inconvenient, time-consuming, and labor-intensive, greatly reducing repair efficiency, but more seriously, it easily leads to stripped bolt threads or shear breakage during forced disassembly. If the bolt breaks inside the mounting hole, complex repair processes such as drilling and using a reverse tap must be employed. This not only significantly increases repair costs and time but may also cause irreversible damage to the mounting bracket and even the entire axle assembly, resulting in substantial economic losses.

[0008] Therefore, how to provide a sensor mounting structure that can both ensure the installation accuracy of ABS sensors and overcome the influence of harsh environments, and achieve convenient and reliable assembly and disassembly, is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0009] In view of this, the purpose of this utility model is to provide a commercial vehicle axle assembly structure that can overcome the influence of harsh environments and achieve convenient and reliable installation and removal of ABS sensors.

[0010] To solve the above-mentioned technical problems, the technical solution of this utility model is: a commercial vehicle axle assembly structure, including an axle tube, a mounting base, and a base plate. The mounting base is rotatably connected to the end of the axle tube, and the base plate is fixed to the axle tube. The mounting base is connected to a gear ring, and an ABS sensor is provided on the base plate. The gear ring is arranged opposite to the ABS sensor, and a fixing plate is connected to the side wall of the ABS sensor. The fixing plate has a mounting hole. The assembly also includes a positioning post made of plastic. The base plate has a positioning hole, and the mounting hole is adapted to the positioning hole. An elastic hook is connected to the end of the positioning post, and a pressure plate is connected to the outer wall of the positioning post.

[0011] The positioning pin passes through the mounting hole and into the positioning hole, so that the elastic hook abuts against the surface of the base plate and the pressure plate abuts against the fixed plate.

[0012] To achieve the above technical solution, when installing the ABS sensor, the ABS sensor with a fixing plate is placed on the base plate. Then, a positioning post made of plastic is passed through the mounting hole on the fixing plate and further into the corresponding positioning hole on the base plate. As the positioning post is inserted further, its elastic hook at the end deforms elastically and eventually snaps into the surface of the base plate. Simultaneously, the pressure plate on the outer wall of the positioning post tightly presses against the fixing plate, achieving a secure positioning of the sensor. When disassembly is required, applying appropriate force to the elastic hook disengages it from the base plate, allowing the positioning post and the ABS sensor to be easily pulled out. This structure, through the cooperation of the plastic positioning post and the elastic hook, achieves reliable corrosion-resistant fixing of the ABS sensor in harsh environments, avoiding the disassembly difficulties caused by rust on traditional bolts. This greatly simplifies maintenance and replacement operations, improves maintenance efficiency, and reduces maintenance costs.

[0013] As a preferred embodiment of this utility model, the positioning post has a connecting hole, a main rope is threaded through the connecting hole, and multiple branch ropes are connected to the end of the main rope. The ends of the multiple branch ropes away from the main rope are connected to an elastic hook.

[0014] To achieve the above technical solution, when it is necessary to disassemble the ABS sensor, by pulling the main rope, the pulling force will be transmitted through the branch rope to multiple elastic hooks on the positioning column, causing the multiple elastic hooks to retract inward and disengage from the base plate at the same time, thereby further improving maintenance efficiency and simplifying maintenance and replacement operations.

[0015] In a preferred embodiment of this utility model, a pull ring is connected to the end of the main rope away from the branch rope, and the pull ring is located outside the positioning post.

[0016] The above technical solution is implemented so that the main rope can be pulled by the pull ring.

[0017] In a preferred embodiment of this utility model, the end of the elastic hook away from the positioning post is connected to a lever plate, and the lever plate extends in the direction away from the positioning post.

[0018] To achieve the above technical solution, when the sensor needs to be disassembled, in addition to pulling the main rope to release the lock, maintenance personnel can also directly apply force to the lever plate extending from the positioning post. By applying force to the lever plate towards the axis of the positioning hole, the elastic hook can be deformed inward, thereby releasing its latching engagement with the base plate. This design provides maintenance personnel with a more flexible and intuitive manual unlocking method, which may be more convenient than pulling the main rope, especially in certain specific maintenance environments. This further enhances the maintainability and ease of disassembly and assembly of the sensor, ensuring efficient and reliable disassembly work in different situations.

[0019] As a preferred embodiment of this utility model, an annular groove is provided on the side wall of the pressure plate, the annular groove is arranged around the edge of the pressure plate, and an O-ring is embedded in the annular groove, the O-ring abutting against the surface of the fixing plate.

[0020] To achieve the above technical solution, during installation, when the pressure plate presses against the fixing plate, the O-ring embedded in the annular groove is compressed and tightly pressed against the surface of the fixing plate. This structure forms a barrier, reducing the intrusion of corrosive media such as rainwater, mud, and salt water from the outside into the fit gap between the positioning post and the mounting hole.

[0021] In a preferred embodiment of this utility model, the base plate is hinged to a brake plate via a pin, a brake pad is fixedly connected to the outer wall of the brake plate, a brake shaft is rotatably connected to the base plate, an S-shaped protrusion is fixedly connected to the brake shaft for contacting the end of the brake plate away from the pin, a brake drum is connected to the mounting base, and the brake pad is used to abut against the inner wall of the brake drum.

[0022] To achieve the above technical solution, when the brake shaft rotates, the S-shaped protrusion fixed on the brake shaft will press against the end of the brake plate away from the pin, causing the brake plate to swing outward with the pin as the fulcrum. As the brake plate swings, the brake pads fixed on its outer wall are pushed outward and pressed against the inner wall of the rotating brake drum, thereby slowing down the wheels on the mounting base.

[0023] As a preferred embodiment of this utility model, the edge of the mounting base is provided with multiple weight-reducing grooves, and the multiple weight-reducing grooves are evenly distributed along the axis of the mounting base. The mounting base is coaxially arranged with the axle tube.

[0024] The above technical solution achieves several advantages. First, it significantly reduces the weight of the mounting bracket, thereby helping to lower the unsprung mass of the entire axle assembly, improving fuel economy and ride comfort. Second, because the grooves are evenly distributed, this ensures that the mounting bracket maintains good dynamic balance even during high-speed rotation, effectively avoiding vibration and noise caused by uneven mass, extending the service life of related bearings and components, and guaranteeing driving safety. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0026] Figure 2 To illustrate the structural diagram of the brake pad;

[0027] Figure 3 To illustrate the position of the gear ring;

[0028] Figure 4 A schematic diagram showing the location of the ABS sensor;

[0029] Figure 5 This is a diagram illustrating the location of the positioning posts;

[0030] Figure 6 for Figure 5 Enlarged view of point A;

[0031] Figure 7 A schematic diagram illustrating the structure of the weight-reduction groove;

[0032] Figure 8 for Figure 7 Enlarged view of point B.

[0033] Reference numerals: 1. Axle tube; 2. Mounting base; 3. Base plate; 5. Fixing hole; 6. ABS sensor; 7. Fixing plate; 8. Positioning hole; 9. Positioning pin; 10. Elastic hook; 11. Paddle plate; 12. Pressure plate; 13. Annular groove; 14. O-ring; 15. Connecting hole; 16. Main rope; 17. Branch rope; 18. Pull ring; 19. Pin; 20. Brake plate; 21. Brake pad; 22. Brake shaft; 23. S-shaped protrusion; 24. Brake drum; 25. Weight reduction groove; 26. Gear ring; 27. Mounting hole. Detailed Implementation

[0034] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0035] A commercial vehicle axle assembly structure includes an axle tube 1, a mounting base 2, and a base plate 3. The mounting base 2 is rotatably connected to the end of the axle tube 1 via a bearing (not shown in the figure). Two mounting bases 2 are located at the two ends of the axle tube 1, and the mounting bases 2 are coaxially arranged with the axle tube 1.

[0036] The base plate 3 is fixed on the axle tube 1. A gear ring 26 is fixedly connected to the side of the mounting seat 2 facing the base plate 3. A circular fixing hole 5 is opened on the base plate 3. The ABS sensor 6 is passed through the fixing hole 5 and is set to correspond with the gear ring 26.

[0037] A mounting plate 7 is fixedly connected to the side wall of the ABS sensor 6, and a mounting hole 27 with a circular cross-section is provided on the mounting plate 7.

[0038] A circular positioning hole 8 is provided on the base plate 3, and the diameter of the positioning hole 8 is equal to the diameter of the mounting hole 27. The positioning post 9 is made of nylon, and an elastic hook 10 is integrally connected to the end of the positioning post 9. Two elastic hooks 10 are evenly distributed along the axis of the positioning post 9. A lever plate 11 is integrally connected to the end of the elastic hook 10 away from the positioning post 9, and the lever plate 11 extends away from the positioning post 9. The lever plate 11 is block-shaped. A pressure plate 12 is integrally connected to the outer wall of the positioning post 9. The pressure plate 12 is annular. An annular groove 13 is provided on the side wall of the pressure plate 12. The annular groove 13 surrounds the edge of the pressure plate 12, and an O-ring 14 is embedded in the annular groove 13. The O-ring 14 abuts against the surface of the fixing plate 7.

[0039] The positioning pin 9 is passed through the mounting hole 27 and into the positioning hole 8, so that the elastic hook 10 is pressed against the surface of the base plate 3 and the pressure plate 12 is pressed against the fixing plate 7. The gap between the outer wall of the positioning pin 9 and the inner wall of the positioning hole 8 is 0.1-0.3mm.

[0040] Press the two levers 11 with your index finger and thumb respectively to move them closer to each other, so that the elastic hook 10 will deform and separate from the base plate 3.

[0041] A connecting hole 15 is provided on the positioning post 9, and the axis of the connecting hole 15 is collinear with the axis of the positioning post 9. A main rope 16 is threaded through the connecting hole 15, and two branch ropes 17 are integrally connected to the end of the main rope 16. The ends of the two branch ropes 17 away from the main rope 16 are respectively connected to two elastic hooks 10.

[0042] A circular hole is provided on the elastic hook 10. After passing the branch rope 17 through the circular hole, it is tied into a knot so that when the main rope 16 is pulled, the branch rope 17 can apply force to the elastic hook 10, causing the elastic hook 10 to deform in the direction closer to the axis of the positioning post 9, so that the elastic hook 10 separates from the base plate 3, thereby facilitating the positioning post 9 to come out of the positioning hole 8.

[0043] A pull ring 18 is fixedly connected to the end of the main rope 16 away from the branch rope 17. The pull ring 18 is located outside the positioning post 9.

[0044] The main rope 16, pull ring 18, and branch rope 17 are integrated and all made of TPU material.

[0045] Therefore, since the pull ring 18 and the lever 11 are located on both sides of the base plate 3, the elastic hook 10 can be separated from the base plate 3 by pulling the pull ring 18, or by pressing the lever 11.

[0046] A base plate 3 is hinged to a brake plate 20 via a pin 19, and there are two brake plates 20. A brake pad 21 is fixedly connected to the outer wall of the brake plate 20. A brake shaft 22 is rotatably connected to the base plate 3, with the pin 19 near the upper edge of the base plate 3 and the brake shaft 22 near the lower edge of the base plate 3. An S-shaped protrusion 23 is fixedly connected to the brake shaft 22 for contacting the end of the brake plate 20 away from the pin 19. A brake drum 24 is fixedly connected to the mounting base 2, and the brake pad 21 is used to abut against the inner wall of the brake drum 24.

[0047] Multiple weight-reducing grooves 25 are provided on the edge of the mounting base 2. The multiple weight-reducing grooves 25 are evenly distributed along the axis of the mounting base 2. The mounting base 2 is coaxially arranged with the axle tube 1.

[0048] The installation process of this utility model is as follows:

[0049] When installing the ABS sensor 6, first place the ABS sensor 6 with the fixing plate 7 on the base plate 3. Next, insert the nylon positioning post 9 along its axial direction through the mounting hole 27 of the fixing plate 7 and continue through the positioning hole 8 on the base plate 3. As the positioning post 9 is inserted, the two elastic hooks 10 at its end will contact the surface of the base plate 3 and undergo elastic deformation; when the positioning post 9 is fully in place, the two elastic hooks 10 will simultaneously and firmly abut against the surface of the base plate 3, completing the snap-fit ​​fixation. At the same time, the pressure plate 12 on the outer wall of the positioning post 9 will press tightly against the surface of the fixing plate 7. At this time, the O-ring 14 embedded in the annular groove 13 on the side wall of the pressure plate 12 is compressed. In addition, the fit gap between the outer wall of the positioning post 9 and the inner wall of the positioning hole 8 is less than 0.1mm, ensuring that the ABS sensor 6 and the toothed ring 26 maintain a precise and stable installation gap.

[0050] The disassembly process is as follows:

[0051] When the ABS sensor 6 needs to be repaired or replaced, this structure provides two convenient and reliable disassembly methods:

[0052] First, disassembling the pull ring 18: Maintenance personnel can directly pull the pull ring 18 located outside the positioning post 9. Since the pull ring 18, main rope 16, and two branch ropes 17 are fixedly connected, and the two branch ropes 17 pass through the round holes on the elastic hooks 10 and are knotted, the force of pulling the pull ring 18 is transmitted to the two branch ropes 17 through the main rope 16. This causes the branch ropes 17 to exert force on their respective connected elastic hooks 10, causing both elastic hooks 10 to deform simultaneously towards the axis of the positioning post 9, separating it from the surface of the base plate 3. Once the elastic hooks 10 are released, the positioning post 9 can be easily removed from the positioning hole 8, allowing the ABS sensor 6 to be removed along with the fixing plate 7.

[0053] Second, disassembly by pressing the lever 11: Maintenance personnel can also choose to directly press the block lever 11 located at the end of the two elastic hooks 10 furthest from the positioning post 9 using their index finger and thumb. Pressing the lever 11 will cause it to move closer to each other, directly causing the elastic hooks 10 to deform and separate from the base plate 3. Once the elastic hooks 10 are released, the positioning post 9 can be dislodged from the positioning hole 8, making it easy to remove the ABS sensor 6.

[0054] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A commercial vehicle axle assembly structure, comprising an axle tube (1), a mounting base (2), and a base plate (3), wherein the mounting base (2) is rotatably connected to the end of the axle tube (1), the base plate (3) is fixed to the axle tube (1), the mounting base (2) is connected to a gear ring (26), an ABS sensor (6) is disposed on the base plate (3), the gear ring (26) is disposed opposite to the ABS sensor (6), a fixing plate (7) is connected to the side wall of the ABS sensor (6), and the fixing plate (7) has a mounting hole (27), characterized in that: It also includes a positioning post (9) made of plastic, a positioning hole (8) is provided on the base plate (3), the mounting hole (27) is adapted to the positioning hole (8), an elastic hook (10) is connected to the end of the positioning post (9), and a pressure plate (12) is connected to the outer wall of the positioning post (9). The positioning pin (9) passes through the mounting hole (27) and into the positioning hole (8), so that the elastic hook (10) abuts against the surface of the base plate (3) and the pressure plate (12) abuts against the fixing plate (7).

2. The commercial vehicle axle assembly structure of claim 1, characterized by: The positioning post (9) has a connecting hole (15), and a main rope (16) is threaded through the connecting hole (15). The end of the main rope (16) is connected to a plurality of branch ropes (17), and the ends of the plurality of branch ropes (17) away from the main rope (16) are connected to an elastic hook (10).

3. A commercial vehicle axle assembly structure according to claim 2, characterized in that: The end of the main rope (16) away from the branch rope (17) is connected to a pull ring (18), which is located outside the positioning post (9).

4. The commercial vehicle axle assembly structure of claim 1, characterized by: The end of the elastic hook (10) away from the positioning post (9) is connected to a lever (11), which extends away from the positioning post (9).

5. The commercial vehicle axle assembly structure of claim 1, characterized by: An annular groove (13) is provided on the side wall of the pressure plate (12). The annular groove (13) surrounds the edge of the pressure plate (12). An O-ring (14) is embedded in the annular groove (13). The O-ring (14) abuts against the surface of the fixing plate (7).

6. The commercial vehicle axle assembly structure of claim 1, characterized by: The base plate (3) is hinged to a brake plate (20) via a pin (19). A brake pad (21) is fixedly connected to the outer wall of the brake plate (20). A brake shaft (22) is rotatably connected to the base plate (3). An S-shaped protrusion (23) is fixedly connected to the brake shaft (22) for contacting the end of the brake plate (20) away from the pin (19). A brake drum (24) is connected to the mounting base (2). The brake pad (21) is used to abut against the inner wall of the brake drum (24).

7. A commercial vehicle axle assembly structure as defined in claim 6, characterized by: The mounting base (2) has multiple weight-reducing grooves (25) on its edge. The multiple weight-reducing grooves (25) are evenly distributed along the axis of the mounting base (2). The mounting base (2) is coaxially arranged with the axle tube (1).

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