High-wear-resistance protection type universal shaft head
By designing support and protection mechanisms on the universal joint head, and using serpentine tube support rods and duct fans to prevent dust intrusion, the problem of dust affecting the universal joint head is solved, and the operational stability and service life of the equipment are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU DAIHONG MACHINERY
- Filing Date
- 2025-06-12
- Publication Date
- 2026-04-21
AI Technical Summary
Dust entering the universal joints of mining crushers and ore conveyor belts increases friction, reduces transmission efficiency, affects service life, and requires frequent maintenance, thus impacting equipment efficiency.
A highly wear-resistant and protective universal joint head was designed, employing a support mechanism and a protective mechanism. The support mechanism uses a serpentine tube support rod and an arc-shaped cover to prevent dust from falling, while the protective mechanism uses a duct fan and an air filter to achieve positive pressure dust prevention and reduce dust intrusion.
It effectively prevents dust from falling directly onto the universal joint head, reducing the frequency of equipment downtime caused by dust and improving the stability and service life of the equipment.
Smart Images

Figure CN224150036U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of universal joint head devices, specifically, to a highly wear-resistant and protective universal joint head. Background Technology
[0002] The universal joint is a key component of a universal joint drive system, primarily used to transmit power and compensate for angular misalignment between axes. Its core function is to stably transmit rotational motion and torque even when there is a certain angle between the input and output shafts.
[0003] Universal joints are used in mining crushers, ore conveyor belts and other equipment to connect power components. However, these equipment generate dust during operation, which easily falls onto the universal joints and enters their interior, leading to increased friction, reduced transmission efficiency, and affecting their service life. Furthermore, frequent maintenance of the universal joints by operators is required, causing frequent equipment downtime and impacting the equipment's working efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a highly wear-resistant and protective universal joint head, which solves the problem in the prior art where dust in the working environment falls on the universal joint head, thus affecting its service life.
[0005] This utility model provides the following technical solution: a highly wear-resistant and protective universal joint head, comprising:
[0006] A drive shaft 1 has a first connector fixedly connected to its right end. A cross shaft is rotatably connected to the inner wall of the first connector. A second connector is rotatably connected to the outer wall of the cross shaft. A second drive shaft is fixedly connected to the outer wall of the second connector. Flanges are fixedly connected to the ends of the drive shafts 1 and 2 that are far apart from each other.
[0007] A support mechanism is mounted on the drive shaft and is used to protect the entire cross shaft from dust.
[0008] A protective mechanism is provided on the support mechanism and is used to provide positive pressure dust protection for the entire cross shaft.
[0009] As a preferred embodiment of the above technical solution, the support mechanism includes a mounting base, a standing base is fixedly mounted on the top of the mounting base, a bearing is fixedly mounted on the inner wall of the standing base, and the transmission shaft is fixedly mounted on the inner wall of the bearing.
[0010] The above technical solution, through the design of the mounting base, facilitates the installation of this structure on the equipment in use.
[0011] As a preferred embodiment of the above technical solution, an installation block is detachably connected to the outer wall of the stand, and a serpentine tube support rod is fixedly connected to the side of the installation block away from the stand. A side plate is fixedly installed at the end of the serpentine tube support rod away from the installation block.
[0012] The above technical solution, through the design of the serpentine tube support rod, facilitates the adjustment of the overall position of the arc-shaped cover.
[0013] As a preferred embodiment of the above technical solution, an arc-shaped cover is fixedly installed on the side of the first side plate away from the serpentine tube support rod, and a second side plate is fixedly installed on the side of the arc-shaped cover away from the first side plate.
[0014] Through the above technical solution, the cross shaft can be protected from above by the design of the arc-shaped cover, the first side plate and the second side plate.
[0015] As a preferred embodiment of the above technical solution, the arc-shaped cover has an arc-shaped groove inside and a through hole on the inner wall of the arc-shaped cover.
[0016] The above technical solution, through the design of arc grooves and through holes, facilitates the uniform delivery of air output from the duct fan to the entire cross shaft.
[0017] As a preferred embodiment of the above technical solution, the protective mechanism includes a connecting cover, which is fixedly connected to the top of the arc-shaped cover. A duct fan is fixedly connected to the top of the connecting cover, and a receiving cover is fixedly connected to the top of the duct fan.
[0018] Through the above technical solution, the design of the duct fan can deliver air to the cross shaft, reducing the amount of dust in the air that enters the cross shaft from the side and bottom.
[0019] As a preferred embodiment of the above technical solution, a movable frame is detachably connected to the outer wall of the receiving cover, a strip pipe is fixedly installed on the inner wall of the movable frame, and an air filter is fixedly installed on the inner wall of the strip pipe near the bottom.
[0020] The above technical solution, through the design of the air filter, can filter the air absorbed by the duct fan, ensuring the cleanliness of the air blown towards the cross shaft.
[0021] Compared with the prior art, the beneficial effects of this utility model are:
[0022] This invention, through the design of a serpentine tube support rod, allows for the adjustment of the position of the arc-shaped cover after the overall adjustment of the cross shaft, placing it above the cross shaft to prevent dust from falling directly onto it. Furthermore, the duct fan design draws filtered air from the air filter and delivers it into the inner cavity of the arc-shaped groove. The air then flows towards the cross shaft, maintaining a positive pressure state and preventing dust from entering from below the arc-shaped cover. This reduces the impact of dust on the joints and significantly decreases the frequency of equipment downtime for maintenance due to dust. Attached Figure Description
[0023] Figure 1 This is a perspective view of the present utility model;
[0024] Figure 2 This is a schematic diagram of the support mechanism and the protective mechanism of this utility model;
[0025] Figure 3 This is a schematic diagram of the overall exploded structure of the arc-shaped cover of this utility model;
[0026] Figure 4 This is a schematic diagram of the bottom structure of the receiving cover and strip pipe of this utility model.
[0027] In the diagram: 1. Drive shaft one; 11. Connector No. 1; 12. Cross shaft; 13. Connector No. 2; 14. Drive shaft two; 15. Flange; 2. Support mechanism; 21. Mounting base; 22. Stand; 23. Bearing; 24. Mounting block; 25. Serpentine tube support rod; 26. Side plate No. 1; 27. Arc-shaped cover; 271. Arc-shaped groove; 272. Through hole; 28. Side plate No. 2; 3. Protective mechanism; 31. Connecting cover; 32. Duct fan; 33. Receiving cover; 34. Movable frame; 35. Strip duct; 36. Air filter. Detailed Implementation
[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0029] like Figures 1-4 As shown, this utility model provides a technical solution: a highly wear-resistant and protective universal joint head, comprising:
[0030] Drive shaft 1, with a first connector 11 fixedly connected to the right end of drive shaft 1. A cross shaft 12 is rotatably connected to the inner wall of the first connector 11. A second connector 13 is rotatably connected to the outer wall of the cross shaft 12. Drive shaft 2 14 is fixedly connected to the outer wall of the second connector 13. Flanges 15 are fixedly connected to the ends of drive shaft 1 and drive shaft 2 14 that are far apart from each other. Through the design of the first connector 11, the cross shaft 12 and the second connector 13, power can be transmitted between drive shaft 1 and drive shaft 2 14 and the angular deviation between the axes can be compensated. The first connector 11, the cross shaft 12 and the second connector 13 are made of high carbon chromium bearing steel to improve wear resistance.
[0031] Support mechanism 2 is mounted on drive shaft 1 and is used to protect the entire cross shaft 12 from dust.
[0032] The protective mechanism 3 is installed on the support mechanism 2 and is used to provide positive pressure dust protection for the entire cross shaft 12.
[0033] As one implementation method in this embodiment, such as Figures 1-4 As shown, the support mechanism 2 includes a mounting base 21, a stand 22 fixedly mounted on the top of the mounting base 21, a bearing 23 fixedly mounted on the inner wall of the stand 22, a drive shaft 1 fixedly mounted on the inner wall of the bearing 23, a mounting block 24 detachably connected to the outer wall of the stand 22, a serpentine tube support rod 25 fixedly connected to the side of the mounting block 24 away from the stand 22, a first side plate 26 fixedly mounted on the end of the serpentine tube support rod 25 away from the mounting block 24, an arc-shaped cover 27 fixedly mounted on the side of the first side plate 26 away from the serpentine tube support rod 25, a second side plate 28 fixedly mounted on the side of the arc-shaped cover 27 away from the first side plate 26, and an arc-shaped opening inside the arc-shaped cover 27. The groove 271 and the inner wall of the arc-shaped cover 27 are provided with through holes 272. The drive shaft 1 is rotatably connected to the inner cavity of the stand 22 through the bearing 23. The drive shaft 1 can be installed on the equipment from the mounting base 21. The serpentine tube support rod 25 is existing technology. It can be flexibly bent so that the position of the arc-shaped cover 27 can be adjusted after the cross shaft 12 is adjusted as a whole. With the cooperation of the first side plate 26, the arc-shaped cover 27 and the second side plate 28, it can cover the cross shaft 12 as a whole, avoiding the problem of dust in the air falling directly on the cross shaft 12 as a whole, and can also block other ejected debris and other impurities, thus achieving protection for the cross shaft 12 as a whole.
[0034] As one implementation method in this embodiment, such as Figures 1-4As shown, the protective mechanism 3 includes a connecting cover 31, which is fixedly connected to the top of the arc-shaped cover 27. A duct fan 32 is fixedly connected to the top of the connecting cover 31, and a receiving cover 33 is fixedly connected to the top of the duct fan 32. A movable frame 34 is detachably connected to the outer wall of the receiving cover 33. A strip pipe 35 is fixedly installed on the inner wall of the movable frame 34, and an air filter 36 is fixedly installed on the inner wall of the strip pipe 35 near the bottom. The connecting cover 31 has a hollow structure, and the inner cavity of the duct fan 32 can communicate with the inner cavity of the arc groove 271 on the arc-shaped cover 27 through the connecting cover 31, thereby controlling the operation of the duct fan 32 and absorbing air from the air filter 36. The filtered air then passes through the strip pipe 35, the receiving cover 33, the duct fan 32, and the connecting cover 31 into the arc-shaped groove 271, and then exits from the through hole 272, so that the cross shaft 12 is in a positive pressure state, reducing the amount of dust in the air that enters the cross shaft 12 from the side and bottom. This reduces the impact of dust in the environment on the connection, and significantly reduces the frequency of equipment downtime for maintenance due to dust. The movable frame 34 is installed on the receiving cover 33 with screws. During maintenance, the strip pipe 35 and the air filter 36 can be disassembled by removing the movable frame 34 to facilitate cleaning of the filter surface of the air filter 36.
[0035] Working principle: In use, the drive shaft 1 can be installed on the equipment from the mounting base 21. Then, the structure is connected to the transmission system from the flanges 15 at the ends of drive shaft 1 and drive shaft 2 14. The design of the first connector 11, the cross shaft 12, and the second connector 13 allows power transmission between drive shaft 1 and drive shaft 2 14 and compensates for angular deviations between the axes. After the drive shaft 1 and drive shaft 2 14 are connected, the serpentine tube support rod 25 can be flexibly bent to facilitate position adjustment of the arc-shaped cover 27. The combination of plate 26, arc-shaped cover 27 and second side plate 28 can cover the entire cross shaft 12, preventing dust in the air from falling directly onto the entire cross shaft 12. Controlling the operation of the duct fan 32 can draw filtered air from the air filter 36. The air then passes through the strip pipe 35, receiving cover 33, duct fan 32, connecting cover 31 and enters the arc-shaped groove 271, and then exits from the through hole 272, so that the entire cross shaft 12 is in a positive pressure state, reducing the amount of dust in the air that enters the cross shaft 12 from the side and bottom.
[0036] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.
Claims
1. A high wear resistant guarded universal shaft head, characterized in that, include: A drive shaft (1) is fixedly connected to a first connector (11) at its right end. A cross shaft (12) is rotatably connected to the inner wall of the first connector (11). A second connector (13) is rotatably connected to the outer wall of the cross shaft (12). A second drive shaft (14) is fixedly connected to the outer wall of the second connector (13). A flange (15) is fixedly connected to the ends of the drive shafts (1) and (14) that are far apart from each other. Support mechanism (2), which is mounted on drive shaft (1), is used to protect the cross shaft (12) from dust. The protective mechanism (3) is installed on the support mechanism (2) and is used to provide positive pressure dust protection for the entire cross shaft (12).
2. A high wear resistant guarded universal shaft head according to claim 1, characterized in that: The support mechanism (2) includes a mounting base (21), a stand (22) is fixedly mounted on the top of the mounting base (21), a bearing (23) is fixedly mounted on the inner wall of the stand (22), and the drive shaft (1) is fixedly mounted on the inner wall of the bearing (23).
3. A high wear resistant guarded universal shaft head according to claim 2, characterized in that: A mounting block (24) is detachably connected to the outer wall of the stand (22). A serpentine tube support rod (25) is fixedly connected to the side of the mounting block (24) away from the stand (22). A first side plate (26) is fixedly installed at the end of the serpentine tube support rod (25) away from the mounting block (24).
4. A high wear resistant guarded universal shaft head according to claim 3, characterized in that: An arc-shaped cover (27) is fixedly installed on the side of the first side plate (26) away from the serpentine tube support rod (25), and a second side plate (28) is fixedly installed on the side of the arc-shaped cover (27) away from the first side plate (26).
5. A high wear resistant guarded universal shaft head according to claim 4, characterized in that: The arc-shaped cover (27) has an arc-shaped groove (271) inside, and a through hole (272) is provided on the inner wall of the arc-shaped cover (27).
6. A high wear resistant guarded universal shaft head according to claim 4, characterized in that: The protective mechanism (3) includes a connecting cover (31), which is fixedly connected to the top of the arc-shaped cover (27). A duct fan (32) is fixedly connected to the top of the connecting cover (31), and a receiving cover (33) is fixedly connected to the top of the duct fan (32).
7. A high wear resistant guarded universal shaft head according to claim 6, characterized in that: A movable frame (34) is detachably connected to the outer wall of the receiving cover (33), and a strip pipe (35) is fixedly installed on the inner wall of the movable frame (34). An air filter (36) is fixedly installed on the inner wall of the strip pipe (35) near the bottom.