Crawler-type engineering machinery thrust wheel bearing protection device
By designing a protection device for the support roller bearings of tracked engineering machinery, dust and dirt are prevented from entering, and regular lubrication is achieved. This solves the problems of shortened bearing life and increased wear in harsh environments, and improves the bearing's service life and operational reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-04-03
AI Technical Summary
Tracked construction machinery's support roller bearings are susceptible to dust and dirt intrusion in harsh environments, and the failure of lubricating grease leads to increased wear, affecting service life and maintenance costs.
A protective device for the bearings of tracked engineering machinery track rollers was designed, including an outer ring seat, an inner ring, a mounting seat, a protective plate, and an oil injection pipe. The protective plate prevents dust and dirt from entering, and the oil tank and oil injection pipe are used to regularly add oil to ensure the lubrication effect of the bearing.
It effectively prevents dust and dirt from entering, extends the service life of bearings, reduces wear, lowers maintenance costs, and ensures the normal operation of bearings.
Smart Images
Figure CN224075652U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing protection technology, specifically a protection device for the support roller bearings of tracked engineering machinery. Background Technology
[0002] Track rollers (also known as carrier rollers or rollers) of tracked construction machinery (such as excavators, bulldozers, tracked cranes, etc.) are key components that support the weight of the entire machine and transmit power. As the core component of the track roller, the bearing directly affects the operating performance, service life and maintenance cost of the equipment. Track roller bearings need to bear the weight of the entire machine as well as the impact load during operation. High-quality bearings can effectively distribute pressure, reduce local stress concentration, and prevent the track roller from deforming or being damaged.
[0003] In existing technologies, tracked machinery often operates in harsh environments such as mud, sand, and high and low temperatures. Bearings are easily invaded by dust and dirt, which affects their normal use and shortens their service life. Furthermore, the lubricating grease gradually loses its effectiveness during long-term use, leading to increased bearing wear. To address these issues, we propose a tracked engineering machinery support roller bearing protection device. Utility Model Content
[0004] The purpose of this utility model is to provide a protection device for the support roller bearings of tracked engineering machinery, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a tracked engineering machinery support roller bearing protection device, comprising an outer ring seat, an inner ring rotatably mounted inside the outer ring seat, two sets of symmetrically distributed mounting seats fixedly mounted on the outer ring seat, both sets of mounting seats being movably sleeved with the inner ring, a mounting ring rotatably mounted inside the mounting seat, a gear ring sleeved on the mounting ring, multiple sets of annularly distributed protective plates provided inside the mounting seat, multiple sets of protective plates being rotatably connected to the mounting seat via mounting shafts, multiple sets of first gears sleeved on the mounting shafts, multiple sets of first gears meshing with the gear rings, two sets of symmetrically distributed limiting rings about the protective plates sleeved on the inner ring, an oil injection pipe fixedly mounted on the outer ring seat, an oil storage tank fixedly mounted on the oil injection pipe, and an oil drain pipe fixedly mounted below the outer ring seat.
[0006] As a further preferred embodiment of this technical solution, two sets of symmetrically distributed ratchet wheels are sleeved on the mounting shaft below. The mounting seat is provided with two sets of pawls that mesh with the ratchet wheels. Both sets of pawls are rotatably connected to the mounting seat through rotating rods. A first torsion spring is sleeved on each set of rotating rods. The two ends of the first torsion spring are fixedly connected to the pawls and the mounting seat, respectively. A second gear is sleeved on each set of rotating rods. Two sets of second racks that mesh with the second gears are slidably installed in the mounting seat. A sliding rod is fixedly installed in the mounting seat.
[0007] As a further preferred embodiment of this technical solution, the two sets of second racks are fixedly connected by a connecting frame, the connecting frame is slidably sleeved with a slide rod, a third spring is sleeved on the slide rod, the two ends of the third spring are fixedly connected to the connecting frame and the mounting base respectively, and a positioning block is fixedly installed on the connecting frame.
[0008] As a further preferred embodiment of this technical solution, a fixing rod corresponding to the positioning block is fixedly installed inside the mounting base. Two sets of symmetrically distributed clips are sleeved on the fixing rod, and both sets of clips are movably engaged with the positioning block. A second torsion spring is sleeved on the fixing rod, and the two ends of the second torsion spring are fixedly connected to the clips and the fixing rod, respectively.
[0009] As a further preferred embodiment of this technical solution, a first fixing frame is fixedly installed inside the oil injection pipe, a first piston is sleeved on the first fixing frame, a first retaining ring is fixedly installed inside the oil injection pipe, the first piston is movably engaged with the first retaining ring, and two sets of symmetrically distributed first springs are sleeved on the first fixing frame, with the two ends of the first springs respectively fixedly connected to the first retaining ring and the first fixing frame.
[0010] As a further preferred embodiment of this technical solution, a second fixing bracket is fixedly installed inside the oil drain pipe, a second piston is sleeved on the second fixing bracket, a second retaining ring is fixedly installed inside the oil drain pipe, the second piston is movably engaged with the second retaining ring, and two sets of symmetrically distributed second springs are sleeved on the second fixing bracket, with the two ends of the second springs being fixedly connected to the second retaining ring and the second fixing bracket, respectively.
[0011] As a further preferred embodiment of this technical solution, an installation rod is fixedly installed on the oil injection pipe, a telescopic rod is slidably installed inside the installation rod, a piston rod is slidably installed inside the telescopic rod, the piston rod is fitted against the inner wall of the oil injection pipe, a screw is rotatably installed inside the installation rod, and a screw tube is rotatably installed inside the telescopic rod. The screw passes through the telescopic rod and is threadedly connected to the telescopic rod, and the screw tube passes through the piston rod and is threadedly connected to the piston rod. Two sets of symmetrically distributed slots are provided on the screw, and two sets of symmetrically distributed blocks are provided inside the screw tube. The blocks are correspondingly arranged with the slots, and the screw tube is slidably sleeved with the screw through the blocks.
[0012] This utility model provides a protective device for the bearings of tracked engineering machinery support rollers, which has the following beneficial effects:
[0013] (1) This utility model achieves dust protection between the outer ring seat and the inner ring through the mounting seat and the multiple sets of protective plates distributed in the ring in the mounting seat. During the use of the bearing, dust and dirt are prevented from entering between the outer ring and the inner ring due to the harsh environment, which would affect the normal use of the bearing. In addition, the mounting seat and the protective plates can be easily disassembled, which makes it convenient for staff to disassemble, clean and maintain the protective device and the bearing as a whole.
[0014] (2) This utility model enables the bearing to be regularly lubricated by the oil storage tank, oil injection pipe and oil discharge pipe, so as to avoid the lubrication effect of the grease in the bearing gradually weakening during long-term use, which would lead to increased bearing wear, shorten the service life of the bearing and affect the normal use of the support roller. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a cross-sectional view of the oil injection pipe of this utility model;
[0017] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A;
[0018] Figure 4 This is a schematic diagram showing the structural separation of the mounting base and the protective plate of this utility model;
[0019] Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point -B;
[0020] In the diagram: 1. Outer ring seat; 2. Inner ring; 3. Mounting seat; 4. Mounting ring; 5. Gear ring; 6. Protective plate; 7. Mounting shaft; 8. First gear; 9. Ratchet; 10. Pawl; 11. Rotating rod; 12. First torsion spring; 13. Second gear; 14. Rack; 15. Connecting frame; 16. Slide rod; 17. Third spring; 18. Positioning block; 19. Fixing rod; 20. Card holder; 21. Second torsion spring; 22. Oil injection pipe; 23. Oil reservoir; 24. Mounting rod; 25. Telescopic rod; 26. Piston rod; 27. Screw; 28. Screw tube; 29. Slot; 30. Card block; 31. First fixing frame; 32. First retaining ring; 33. First piston; 34. First spring; 35. Oil drain pipe; 36. Second fixing frame; 37. Second retaining ring; 38. Second piston; 39. Second spring; 40. Limiting ring. Detailed Implementation
[0021] 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.
[0022] This utility model provides a technical solution as follows: Figure 1 , Figure 4 and Figure 5As shown, in this embodiment, the tracked construction machinery track roller bearing protection device includes an outer ring seat 1, an inner ring 2 rotatably mounted inside the outer ring seat 1, two sets of symmetrically distributed mounting seats 3 fixedly mounted on the outer ring seat 1, both sets of mounting seats 3 being movably sleeved with the inner ring 2, a mounting ring 4 rotatably mounted inside the mounting seat 3, a gear ring 5 sleeved on the mounting ring 4, multiple sets of annularly distributed protective plates 6 provided inside the mounting seat 3, multiple sets of protective plates 6 being rotatably connected to the mounting seat 3 through mounting shafts 7, multiple sets of first gears 8 being sleeved on the multiple sets of mounting shafts 7, multiple sets of first gears 8 being meshed with the gear ring 5, two sets of symmetrically distributed limiting rings 40 sleeved on the inner ring 2 about the protective plates 6, an oil injection pipe 22 fixedly mounted on the outer ring seat 1, an oil storage tank 23 fixedly mounted on the oil injection pipe 22, and an outer ring roller bearing bearing protection device. An oil drain pipe 35 is fixedly installed below the ring seat 1. The mounting seat 3 is fixedly installed on the outer ring sleeve by bolts and other connecting parts. The protective plate 6 is aligned with the limiting ring 40. The mounting shaft 7 in the mounting seat 3 rotates, driving the first gear 8 to rotate. In conjunction with the gear ring 5 and the mounting ring 4, multiple sets of protective plates 6 rotate synchronously until the protective plate 6 is in contact with the outer wall of the inner ring 2, thus covering the joint between the outer ring seat 1 and the inner ring 2. During use, this effectively prevents dust and sand from entering between the outer ring seat 1 and the inner ring 2. Two sets of symmetrically distributed ratchet wheels 9 are sleeved on the mounting shaft 7 below. The mounting seat 3 has two sets of pawls 10 that mesh with the ratchet wheels 9. Both sets of pawls 10 are rotatably connected to the mounting seat 3 through rotating rods 11. Both sets of rotating rods 11 are sleeved with first torsion springs 12. Two ends of a torsion spring 12 are fixedly connected to a pawl 10 and a mounting base 3, respectively. Two sets of second gears 13 are sleeved on each of the two sets of rotating rods 11. Two sets of second racks 14, meshing with the second gears 13, are slidably installed inside the mounting base 3. A sliding rod 16 is fixedly installed inside the mounting base 3. The two sets of second racks 14 are fixedly connected by a connecting frame 15. The connecting frame 15 is slidably sleeved with the sliding rod 16. A third spring 17 is sleeved on the sliding rod 16. The two ends of the third spring 17 are fixedly connected to the connecting frame 15 and the mounting base 3, respectively. A positioning block 18 is fixedly installed on the connecting frame 15. Fixed rods 19, corresponding to the positioning blocks 18, are fixedly installed inside the mounting base 3. Two sets of symmetrically distributed clips 20 are sleeved on the fixed rods 19. Both sets of clips 20 are connected to the positioning blocks. 18. A movable latch is connected to a fixed rod 19, and a second torsion spring 21 is sleeved on the fixed rod 19. The two ends of the second torsion spring 21 are fixedly connected to the bracket 20 and the fixed rod 19, respectively. After the multiple sets of protective plates 6 are closed, the two sets of pawls 10 are engaged with the corresponding ratchet 9, thereby limiting the position of the mounting shaft 7 below. The multiple sets of protective plates 6 cannot be opened to prevent the protective plates 6 from loosening during the use of the bearing. When it is necessary to disassemble the protective device, the two sets of racks 14 are pulled by the connecting bracket 15, which works with the second gear 13 to deflect the rotating rod 11 and the pawls 10 on the rotating rod 11, so that the pawls 10 are away from the corresponding ratchet 9. At this time, the mounting shaft 7 can rotate, and the multiple sets of protective plates 6 can be rotated open to facilitate the disassembly of the mounting base 3 and the protective plates 6.
[0023] like Figure 2 and Figure 3 As shown, a first fixing bracket 31 is fixedly installed inside the oil injection pipe 22, and a first piston 33 is sleeved on the first fixing bracket 31. A first retaining ring 32 is fixedly installed inside the oil injection pipe 22, and the first piston 33 is movably engaged with the first retaining ring 32. Two sets of symmetrically distributed first springs 34 are sleeved on the first fixing bracket 31, and the two ends of the first springs 34 are fixedly connected to the first retaining ring 32 and the first fixing bracket 31, respectively. A second fixing bracket 36 is fixedly installed inside the oil discharge pipe 35, and a second piston 38 is sleeved on the second fixing bracket 36. A second retaining ring 37 is fixedly installed inside the oil discharge pipe 35, and the second piston 38 is movably engaged with the second retaining ring 37. Two sets of symmetrically distributed second springs 39 are sleeved on the frame 36. The two ends of the second springs 39 are fixedly connected to the second retaining ring 37 and the second fixed frame 36, respectively. An installation rod 24 is fixedly installed on the oil injection pipe 22. A telescopic rod 25 is slidably installed inside the installation rod 24. A piston rod 26 is slidably installed inside the telescopic rod 25, and the piston rod 26 is fitted against the inner wall of the oil injection pipe 22. A screw 27 is rotatably installed inside the installation rod 24. A screw tube 28 is rotatably installed inside the telescopic rod 25. The screw 27 passes through the telescopic rod 25 and is threadedly connected to it. The screw tube 28 passes through the piston rod 26 and is threadedly connected to it. Two sets of... The screw tube 28 is provided with two sets of symmetrically distributed locking blocks 30, which are arranged correspondingly to the locking slots 29. The screw tube 28 is slidably connected to the screw rod 27 through the locking blocks 30. A certain amount of lubricating oil can be added to the oil storage tank 23. When the motor in the mounting rod 24 drives the screw rod 27 to rotate, the screw tube 28 rotates accordingly under the limiting action of the locking blocks 30 and the locking slots 29. Under the limiting action of the mounting rod 24 and the telescopic rod 25, the piston rod 26 slides in the oil injection pipe 22, pushing the lubricating oil flowing into the oil storage tank 23 towards the first piston 33. When the pushing force is greater than the compression force of the first spring 34, the first piston 33 and the first retaining ring 32... Separation occurs when lubricating oil enters between the outer ring seat 1 and the inner ring 2, enhancing the lubrication inside the bearing. When the lubricating oil in the bearing reaches a certain amount, the old lubricating oil enters the drain pipe 35 and squeezes the second spring 39, causing the second piston 38 to separate from the second retaining ring 37. The old lubricating oil flows out, and the piston rod 26 is recovered. The lubricating oil flowing into the oil filling pipe 22 from the oil reservoir 23 is no longer squeezed and pushed. Under the action of the first spring 34, the first piston 33 returns to engage with the first retaining ring 32, the oil filling pipe 22 closes, and no more oil enters the bearing. Under the action of the second spring 39, the second piston 38 returns to engage with the second retaining ring 37, and the drain pipe 35 no longer discharges oil.
[0024] This utility model provides a protective device for the bearings of tracked engineering machinery support rollers. The specific working principle is as follows: The mounting base 3 is fixedly installed on the outer ring sleeve using bolts and other connecting parts. The protective plate 6 is aligned with the limiting ring 40. The mounting shaft 7 in the mounting base 3 rotates, driving the first gear 8 to rotate. This, in conjunction with the gear ring 5 and the mounting ring 4, enables multiple sets of protective plates 6 to rotate synchronously until the protective plates 6 are in contact with the outer wall of the inner ring 2, thus covering the joint between the outer ring seat 1 and the inner ring 2. During use, this effectively prevents dust and sand from entering between the outer ring seat 1 and the inner ring 2. After completing multiple sets of... After the protective plate 6 is closed, the two sets of pawls 10 engage with the corresponding ratchet 9, thereby limiting the position of the mounting shaft 7 below. All sets of protective plates 6 cannot be opened to prevent loosening during bearing use. When the protective device needs to be disassembled, the connecting bracket 15 pulls the two sets of racks 14, which, in conjunction with the second gear 13, deflects the rotating rod 11 and the pawls 10 on it, causing the pawls 10 to move away from the corresponding ratchet 9. At this time, the mounting shaft 7 can rotate, and the multiple sets of protective plates 6 can be rotated open, facilitating the installation of the mounting base 3 and the protective device. When plate 6 is disassembled, a certain amount of lubricating oil can be added to the oil reservoir 23. When the motor in the mounting rod 24 drives the screw 27 to rotate, the screw tube 28 rotates under the limiting action of the locking block 30 and the locking groove 29. Under the limiting action of the mounting rod 24 and the telescopic rod 25, the piston rod 26 slides in the oil injection pipe 22, pushing the lubricating oil flowing into the oil reservoir 23 towards the first piston 33. When the pushing force is greater than the compression force of the first spring 34, the first piston 33 separates from the first retaining ring 32, and the lubricating oil enters between the outer ring seat 1 and the inner ring 2, enhancing the lubrication inside the bearing. When the lubricating oil in the bearing reaches a certain amount, the old lubricating oil enters the drain pipe 35 and squeezes the second spring 39, causing the second piston 38 to separate from the second retaining ring 37. The old lubricating oil flows out, the piston rod 26 is recovered, and the lubricating oil flowing into the oil reservoir 23 into the oil filling pipe 22 is no longer squeezed and pushed. Under the action of the first spring 34, the first piston 33 returns to engage with the first retaining ring 32, the oil filling pipe 22 is closed, and no more oil enters the bearing. Under the action of the second spring 39, the second piston 38 returns to engage with the second retaining ring 37, and the drain pipe 35 no longer discharges oil.
[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A track-type construction machine road wheel bearing protection device comprising an outer race seat (1), characterised in that: The outer ring seat (1) is rotatably installed with an inner ring (2), two groups of symmetrical mounting seats (3) are fixedly installed on the outer ring seat (1), and the two groups of mounting seats (3) are movably sleeved with the inner ring (2), the mounting seat (3) is rotatably installed with a mounting ring (4), the mounting ring (4) is sleeved with a gear ring (5), a plurality of groups of annularly distributed protection plates (6) are arranged in the mounting seat (3), a plurality of groups of the protection plates (6) are rotatably connected with the mounting seat (3) through mounting shafts (7), a plurality of groups of the first gear (8) are sleeved on the mounting shafts (7), and the plurality of groups of the first gear (8) are meshed with the gear ring (5).
2. Track-type engineering machine bogie bearing protection arrangement according to claim 1, characterized in that: Two groups of symmetrical ratchets (9) are sleeved on the mounting shafts (7) in the lower portion, two groups of pawls (10) meshed with the ratchets (9) are arranged in the mounting seat (3), the two groups of pawls (10) are rotatably connected with the mounting seat (3) through rotating rods (11), first torsional springs (12) are sleeved on the two groups of rotating rods (11), and two ends of the first torsional spring (12) are fixedly connected with the pawl (10) and the mounting seat (3) respectively.
3. A caterpillar machine track bearing protection arrangement according to claim 2, characterised in that: Second gear (13) is sleeved on the two groups of rotating rods (11), two groups of second gear racks (14) meshed with the second gear (13) are slidably installed in the mounting seat (3), and a sliding rod (16) is fixedly installed in the mounting seat (3).
4. The track-type construction machine track roller bearing protection device of claim 1, characterized in that: The two groups of second gear racks (14) are fixedly connected through a connecting frame (15), the connecting frame (15) is slidably sleeved with the sliding rod (16), a third spring (17) is sleeved on the sliding rod (16), and two ends of the third spring (17) are fixedly connected with the connecting frame (15) and the mounting seat (3) respectively.
5. The track-type construction machine track roller bearing protection device of claim 1, wherein: The connecting frame (15) is fixedly installed with a positioning block (18), the mounting seat (3) is fixedly installed with a fixed rod (19) corresponding to the positioning block (18), two groups of symmetrical clamping frames (20) are sleeved on the fixed rod (19), the two groups of clamping frames (20) are movably clamped with the positioning block (18), a second torsional spring (21) is sleeved on the fixed rod (19), and two ends of the second torsional spring (21) are fixedly connected with the clamping frame (20) and the fixed rod (19) respectively. A first fixed frame (31) is fixedly installed in the oil injection pipe (22), a first piston (33) is sleeved on the first fixed frame (31), a first blocking ring (32) is fixedly installed in the oil injection pipe (22), the first piston (33) is movably clamped with the first blocking ring (32), and two groups of symmetrical first springs (34) are sleeved on the first fixed frame (31).
6. The track-type construction machine track roller bearing protection device of claim 1, characterized by: The second fixed frame (36) is fixedly installed in the oil discharge pipe (35), the second piston (38) is sleeved on the second fixed frame (36), the second blocking ring (37) is fixedly installed in the oil discharge pipe (35), the second piston (38) and the second blocking ring (37) are movably connected, two groups of second springs (39) are symmetrically sleeved on the second fixed frame (36), and two ends of the second spring (39) are fixedly connected with the second blocking ring (37) and the second fixed frame (36) respectively.
7. The track-type construction machine track roller bearing protection device of claim 1, characterized by: The mounting rod (24) is fixedly installed on the oil injection pipe (22), the telescopic rod (25) is slidably installed in the mounting rod (24), the piston rod (26) is slidably installed in the telescopic rod (25), the piston rod (26) is attached to the inner wall of the oil injection pipe (22), the screw rod (27) is rotatably installed in the mounting rod (24), the screw pipe (28) is rotatably installed in the telescopic rod (25), the screw rod (27) penetrates through the telescopic rod (25) and is threadedly connected with the telescopic rod (25), the screw pipe (28) penetrates through the piston rod (26) and is threadedly connected with the piston rod (26), two groups of clamping grooves (29) are symmetrically formed in the screw rod (27), two groups of clamping blocks (30) are symmetrically arranged in the screw pipe (28), the clamping blocks (30) are correspondingly arranged in the clamping grooves (29), and the screw pipe (28) is slidably sleeved with the screw rod (27) through the clamping blocks (30).