All-adaptive light track supporting wheel

Abstract

The utility model provides a full-adaptability light crawler belt thrust wheel, which relates to the technical field of thrust wheels and comprises a thrust wheel axle, a thrust wheel body is rotatably sleeved on the outer surface of the thrust wheel axle, cover plates are arranged at two ends of the thrust wheel body, an oil cavity is arranged between the thrust wheel body and the cover plates, and the thrust wheel axle and the cover plates are connected through a hydraulic cylinder. An oil seal ring is arranged in the oil cavity, grooves are formed in the inner side face and the outer side face of the oil seal ring, and sealing rubber strips are arranged in the grooves. According to the full-adaptability light track supporting wheel, the cover plates are arranged at the two ends of the supporting wheel body, the oil cavities are formed between the supporting wheel body and the cover plates, in the normal use process, sealing rubber strips and oil sealing rings are extruded through the cover plates, gaps are reduced, meanwhile, the sealing rubber strips located on the outer side are extruded to block an oil injection pipe, and therefore the sealing rubber strips are prevented from being damaged. And therefore, the lubricating oil in the oil cavity cannot leak, and the probability of oil leakage is greatly reduced.

Description

Technical Field

[0001] The utility model relates to a crawler idler, in particular to a fully adaptable light crawler idler, belonging to the technical field of idlers. Background Art

[0002] The crawler idler is used to support the weight of an excavator or a tractor, and at the same time rolls on the guide rail or the crawler plate surface of the crawler. It is also used to limit the crawler to prevent lateral slippage. When the excavator or the tractor turns, the idler forces the crawler to slip on the ground.

[0003] As a crawler idler assembly of an excavator or a tractor, since it needs to work in different environments, it is often under extreme working conditions and bears great stress and wear. When working under extreme conditions in mountainous areas and rocky areas, the crawler idler assembly is more likely to be damaged. Therefore, the crawler idler assembly has problems such as high maintenance costs, short service life due to wear, and other structural problems. The solution to these problems lies in constantly keeping the crawler idler assembly well lubricated. However, the existing crawler idler assemblies often cause the lubricating oil to leak from the internal area of the crawler idler assembly to the external area in different environments, especially when working in difficult areas, which leads to a significant increase in the maintenance cost of repairing the leakage or replacing the entire crawler idler assembly.

[0004] Therefore, a fully adaptable light crawler idler is proposed here. Summary of the Utility Model

[0005] The utility model provides a fully adaptable light crawler idler, so that when the crawler idler works in different environments, the whole parts can be closely fitted to prevent the oil from overflowing, thereby greatly reducing the probability of oil leakage and preventing the crawler idler assembly from failing.

[0006] The utility model is realized by the following technical solutions: a fully adaptable light crawler idler includes an idler axle, and an idler wheel body is rotatably sleeved on the outer surface of the idler axle. Covers are arranged at both ends of the idler wheel body, and an oil cavity is formed between the idler wheel body and the covers.

[0007] An oil seal ring is arranged inside the oil cavity. Grooves are formed on both the inner and outer sides of the oil seal ring, and sealing rubber strips are arranged inside the grooves. The sealing rubber strip located on the inner side is in contact with the idler wheel body, and the sealing rubber sleeve located on the outer side is in contact with the cover.

[0008] Furthermore, an oil injection pipe is arranged on the side surface of the cover. The oil injection pipe penetrates through the cover, and the inner port of the oil injection pipe is communicated with the oil cavity. Lubricating oil can be injected into the oil cavity through the oil injection pipe to assist in lubricating the inside of the idler wheel body.

[0009] Furthermore, a bearing sleeve is sleeved on the inner surface of the carrier wheel body. The bearing sleeve is rotatably connected to the carrier wheel shaft. By means of the bearing sleeve, the direct contact between the carrier wheel shaft and the carrier wheel body can be avoided. At the same time, lubricating oil can flow into the gap between the carrier wheel body, the carrier wheel shaft and the bearing sleeve, reducing the friction between them.

[0010] Furthermore, a plurality of grooves are circumferentially formed on one side surface of the carrier wheel body close to the bearing sleeve. A telescopic rod is installed on the inner wall of the groove. The other end of the telescopic rod is fixed with a baffle. The original length of the telescopic rod is greater than the depth of the groove. The baffle can be driven to move by the telescopic rod.

[0011] Furthermore, a spring is sleeved on the outer surface of the telescopic rod. One end of the spring is fixed to the cover plate, and the other end of the spring is fixed to the baffle. The baffle can be pushed to move by the elastic force of the spring, thereby driving the telescopic rod to complete the reset.

[0012] Furthermore, an end cover is fixed to the outer surface of the cover plate. Two threaded grooves are formed on the upper surface of the end cover. A threaded rod is threadedly connected inside the threaded groove. The threaded rod can be threadedly connected to an external component.

[0013] Furthermore, a slot is formed on the upper surface of the cover plate. The slot penetrates the end cover, the cover plate and the carrier wheel shaft. A cylindrical pin is inserted into the slot. By inserting the cylindrical pin, the relative movement between the cover plate and the carrier wheel shaft is restricted.

[0014] The utility model provides a fully adaptable light crawler carrier wheel, and the beneficial effects thereof are as follows:

[0015] For this fully adaptable light crawler carrier wheel, by arranging cover plates at both ends of the carrier wheel body and forming an oil cavity between the carrier wheel body and the cover plates. During normal use, the cover plates squeeze the sealing rubber strip and the oil seal ring, reducing the existence of gaps. At the same time, the sealing rubber strip located on the outside is squeezed to block the oil injection pipe, so that the lubricating oil inside the oil cavity will not leak, thereby greatly reducing the probability of oil leakage.

[0016] When this fully adaptable light crawler carrier wheel is in use, since the sealing rubber strip is squeezed, the sealing rubber strip divides the oil cavity into upper and lower regions. While reducing the leakage of the lubricating oil inside the oil cavity, it also reduces the entry of external sediment into the interior of the carrier wheel body. When it is necessary to add lubricating oil, the cylindrical pin is removed, the limit between the cover plate and the carrier wheel shaft is released, and under the elastic force of the spring, the cover plate moves, the sealing rubber strip is no longer squeezed and the blockage is released. At this time, lubricating oil can be supplemented into the oil cavity through the oil injection pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1Schematic three - dimensional structure diagram of the present utility model;

[0018] Figure 2 Cross - sectional view of the front view of the idler wheel axle of the present utility model;

[0019] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at position A in

[0020] Figure 4 Enlarged schematic diagram of the structure at position A in the present utility model when in the state of adding lubricating oil Figure 2 ;

[0021] Figure 5 For the present utility model Figure 2 Enlarged schematic diagram of the structure at position B in

[0022] Explanation of reference numerals in the drawings

[0023] 1. Idler wheel axle; 2. Idler wheel body; 3. Cover plate; 4. Oil cavity;

[0024] 401. Oil seal ring; 402. Sealing rubber strip;

[0025] 5. Oil injection pipe; 6. Bearing sleeve; 7. Telescopic rod; 8. Baffle; 9. Spring; 10. End cover; 11. Threaded rod; 12. Cylindrical pin. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1 to 5 , an all - adaptable light - type crawler idler wheel provided by an embodiment of the present utility model includes an idler wheel axle 1. The outer surface of the idler wheel axle 1 is rotatably sleeved with an idler wheel body 2. Cover plates 3 are arranged at both ends of the idler wheel body 2. An oil cavity 4 is formed between the idler wheel body 2 and the cover plates 3. An oil seal ring 401 is arranged inside the oil cavity 4. Grooves are formed on both the inner and outer sides of the oil seal ring 401. Sealing rubber strips 402 are arranged inside the grooves. The sealing rubber strip 402 located on the inner side is in contact with the idler wheel body 2, and the sealing rubber sleeve located on the outer side is in contact with the cover plate 3.

[0028] Please pay special attention to referring to Figure 1 , Figure 2 and Figure 3Furthermore, an oil filling pipe 5 is provided on the side of the cover plate 3, and the oil filling pipe 5 runs through the cover plate 3. The inner port of the oil filling pipe 5 is connected with the oil chamber 4. Lubricating oil can be injected into the oil chamber 4 through the oil filling pipe 5, thereby assisting the lubrication of the inside of the supporting roller body 2. The inner surface of the supporting roller body 2 is sleeved with a bearing sleeve 6, and the bearing sleeve 6 is rotatably connected to the supporting roller axle 1. The bearing sleeve 6 can prevent the supporting roller axle 1 from directly contacting the supporting roller body 2. At the same time, the lubricating oil can flow into the gap between the supporting roller body 2, the supporting roller axle 1 and the bearing sleeve 6 to reduce the friction between them.

[0029] Please refer to Figure 2 , Figure 3 and Figure 4 Furthermore, a plurality of grooves are circumferentially provided on one side of the track wheel body 2 close to the bearing sleeve 6, a telescopic rod 7 is installed on the inner wall of the groove, a baffle 8 is fixed to the other end of the telescopic rod 7, the original length of the telescopic rod 7 is greater than the depth of the groove, and the baffle 8 can be driven to move by the telescopic rod 7, a spring 9 is sleeved on the outer surface of the telescopic rod 7, one end of the spring 9 is fixed to the cover plate 3, and the other end of the spring 9 is fixed to the baffle 8, the baffle 8 can be pushed to move by the elastic force of the spring 9, and then the telescopic rod 7 is driven to complete the reset.

[0030] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 Furthermore, an end cover 10 is fixed to the outer surface of the cover plate 3, and two threaded grooves are provided on the upper surface of the end cover 10. The internal threads of the threaded grooves are connected with threaded rods 11, and threaded connections with external components can be made through the threaded rods 11. Further, a slot is provided on the upper surface of the cover plate 3, and the slot passes through the end cover 10, the cover plate 3 and the supporting wheel axle 1. A cylindrical pin 12 is inserted into the slot, and the mutual movement of the cover plate 3 and the supporting wheel axle 1 is limited by the insertion of the cylindrical pin 12.

[0031] When the utility model is in use: when the whole is installed on the vehicle body and is in normal working state, the supporting wheel body 2, the cover plate 3 and the end cover 10 are fixed by the cylindrical pin 12, and the cover plate 3 squeezes the telescopic rod 7 and the spring 9, so that the telescopic rod 7 and the spring 9 are retracted to the groove, and at the same time, the cover plate 3 squeezes the sealing strip 402 and the oil seal ring 401. Since the oil chamber 4 is arranged between the supporting wheel body 2 and the cover plate 3, after the sealing strip and the oil seal ring 401 are squeezed, the sealing strip 402 located on the outside is squeezed to block the oil filling pipe 5, so that the lubricating oil inside the oil chamber 4 will not leak out. At the same time, due to the squeezing, the gap between the cover plate 3 and the supporting wheel body 2 is reduced, which also avoids the leakage of the lubricating oil, thereby greatly reducing the probability of oil leakage.

[0032] Meanwhile, due to the extrusion of the sealing strip 402, the sealing strip 402 divides the oil chamber 4 into upper and lower regions. While reducing the leakage of the lubricating oil inside the oil chamber 4, it also reduces the entry of external sediment into the inside of the carrier wheel body 2, alleviating the impact of the sediment on the inside of the carrier wheel body 2. When lubricating oil needs to be added, the cylindrical pin 12 is removed, and the limit between the cover plate 3 and the carrier wheel shaft 1 is released. Under the elastic force of the spring 9, the telescopic rod 7 resets, and the spring 9 pushes the baffle 8 to move. At this time, the cover plate 3 moves, the sealing strip 402 is no longer extruded and the blockage is released. At this time, lubricating oil can be supplemented into the oil chamber 4 through the oil injection pipe 5. After the lubricating oil is supplemented, the cover plate 3 is pushed again to reset it, and then the cylindrical pin 12 is inserted to limit the cover plate 3 to maintain the stability of the cover plate 3 during the movement of the carrier wheel body 2.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully adaptable light track roller, comprising a roller axle (1), characterized in that: The outer surface of the roller axle (1) is rotatably sleeved with a roller body (2), both ends of the roller body (2) are provided with cover plates (3), and an oil chamber (4) is provided between the roller body (2) and the cover plate (3); An oil seal ring (401) is arranged inside the oil cavity (4), and grooves are provided on both inner and outer side surfaces of the oil seal ring (401). A sealing rubber strip (402) is arranged inside the groove, and the sealing rubber strip (402) located inside is in contact with the roller body (2), and the sealing rubber sleeve located outside is in contact with the cover plate (3).

2. The fully adaptable light track roller according to claim 1, characterized in that: An oil injection pipe (5) is provided on the side of the cover plate (3), the oil injection pipe (5) passes through the cover plate (3), and the inner end of the oil injection pipe (5) is connected to the oil chamber (4).

3. The fully adaptable light track roller according to claim 1, characterized in that: A bearing sleeve (6) is sleeved on the inner surface of the track roller body (2), and the bearing sleeve (6) is rotatably connected to the track roller axle (1).

4. The fully adaptable light track roller according to claim 3, characterized in that: A side surface of the track roller body (2) close to the bearing sleeve (6) is provided with a plurality of grooves in a circumferential manner, a telescopic rod (7) is mounted on the inner wall of the groove, a baffle (8) is fixed to the other end of the telescopic rod (7), and the original length of the telescopic rod (7) is greater than the depth of the groove.

5. The fully adaptable light track roller according to claim 4, characterized in that: A spring (9) is sleeved on the outer surface of the telescopic rod (7); one end of the spring (9) is fixed to the cover plate (3), and the other end of the spring (9) is fixed to the baffle plate (8).

6. The fully adaptable light track roller according to claim 1, characterized in that: An end cover (10) is fixed to the outer surface of the cover plate (3); two thread grooves are provided on the upper surface of the end cover (10); and a threaded rod (11) is connected to the inner threads of the thread grooves.

7. The fully adaptable light track roller according to claim 1, characterized in that: The upper surface of the cover plate (3) is provided with a slot, the slot passing through the end cover (10), the cover plate (3) and the track wheel axle (1), and a cylindrical pin (12) is inserted into the interior of the slot.

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