A wear-reducing track roller assembly

Abstract

This invention discloses a wear-reducing support roller assembly, comprising a main body, with two roller bodies fixedly sleeved on both sides of the main body's outer wall. Two bearing grooves, two nut grooves, and two side cover grooves are sequentially formed on both sides of the main body from the inside out. Two bearings are inserted into the two bearing grooves. Through the cooperation of various components, the transmission assembly can quickly add lubricating oil from the oil reservoir to the bearings and support shaft. The lubricating oil enters quickly, resulting in good lubrication and facilitating use. The sealing cap assembly inside the oil filling hole is easy to install and remove, and has good fixing and sealing effects, effectively preventing lubricating oil from flowing out of the oil reservoir, facilitating subsequent use. The bearing sleeve integrated on the bearing inner shell reduces direct contact between the bearing and the support shaft, effectively avoiding wear on the support shaft and resulting in smoother operation. Furthermore, the cooperation between the anti-reverse nut and the tapped part keeps the bearing on the support shaft, effectively preventing the bearing from moving on the support shaft and resulting in a tighter connection.

Description

Technical Field

[0001] This invention relates to the field of track roller technology, specifically to a track roller assembly that reduces wear. Background Technology

[0002] Track rollers are one of the four wheels and one track components of tracked construction machinery chassis. Their main function is to support the weight of excavators and bulldozers, allowing the tracks to move forward along the wheels. The track rollers of small tracked excavators are mainly composed of wheel body, support shaft, copper bushing, float seal ring, O-ring and end cap.

[0003] In this regard, Chinese utility model patent with authorization announcement number CN215590883U discloses a wear-resistant support roller. The wear-resistant support roller includes a body, and grooves are respectively opened on the left and right sides of the body. A left end cover and a right end cover are respectively installed in the two grooves. Wear-resistant blocks are fixedly connected to both sides of the body.

[0004] This wear-resistant support roller has its left and right end caps installed inside two grooves, respectively. The grooves and wear-resistant blocks completely enclose the outer walls of the left and right end caps, preventing them from being exposed. This provides protection for the left and right end caps. However, when adding lubricating oil to this wear-resistant support roller, the oil needs to rely on gravity to enter the bearings and support shafts, resulting in slow oil entry, poor lubrication, and inconvenience. Therefore, we propose a wear-reducing support roller assembly to solve these problems. Summary of the Invention

[0005] The purpose of this invention is to provide a track roller assembly that reduces wear, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a wear-reducing support roller assembly, comprising: a main body, a wheel body, a support shaft, bearings, anti-reverse nuts, tapped parts, skeleton oil seals, and side covers. Two wheel bodies are fixedly sleeved on both sides of the outer wall of the main body. Two bearing grooves, two nut grooves, and two side cover grooves are sequentially formed on both sides of the main body from the inside to the outside. Two bearings are inserted into the two bearing grooves. The two bearings are fixedly installed on both sides of the support shaft. Two side covers are inserted into the two side cover grooves. The support shaft passes through the main body. Two tapped parts are formed on both sides of the support shaft. The two tapped parts are threadedly connected to two anti-reverse nuts. Two skeleton oil seals are sleeved around the two anti-reverse nuts. The two anti-reverse nuts and the two skeleton oil seals are inserted into the two nut grooves.

[0007] Preferably, the two bearings are tapered roller bearings.

[0008] Preferably, the main body has two transmission components at its top and bottom, and two oil storage chambers at its top and bottom, with four square shells slidably connected inside the two oil storage chambers; two oil filling holes are provided through the two oil storage chambers on opposite sides, with two sealing cap assemblies inside the two oil filling holes; two oil outlet holes are provided on opposite sides of the two oil storage chambers, with two control components inside the two oil outlet holes; a connecting pipe is fixedly connected to the middle of the inner wall of the main body, and two oil delivery pipes are provided at the top and bottom of the connecting pipe, with the oil delivery pipes, oil outlet holes, and bearing grooves communicating with each other.

[0009] Preferably, the transmission assembly includes a cylindrical rod, a rotating rod, and rotating plates. Two cylindrical rods are fixedly connected to two square shells located on one side, away from each other. One end of two rotating rods is rotatably connected to the middle of the two cylindrical rods. Four rotating plates are rotatably connected to the other ends of the two rotating rods. Two rotating shafts and two rotating shafts are fixedly connected to one side of the four rotating plates. Two rotating shafts and two rotating shafts are rotatably connected to two square cavities. The two square cavities are opened on both sides of the oil storage cavity.

[0010] Preferably, one end of each of the two rotating shafts is fixedly connected to two bevel gears, the two bevel gears mesh with two bevel gears, the two bevel gears are fixedly sleeved onto a control rod, and the control rod is rotatably connected to the main body.

[0011] Preferably, the top and bottom of the main body have four square cavities, the first bevel gear and the second bevel gear are located inside the square cavities, and the two square shells located on one side are fixedly connected to two piston plates close to each other on one side.

[0012] Preferably, the sealing cap assembly includes a sealing plug, a cylindrical shell, and a spring. The sealing plug is inserted into the oil filling hole. The top of the sealing plug is fixedly connected to the cylindrical shell. A cylindrical groove is formed inside the cylindrical shell. One end of the spring is fixedly connected to the bottom surface of the cylindrical groove. A circular piece is fixedly connected to the other end of the spring. A movable column is fixedly connected to the top surface of the circular piece.

[0013] Preferably, the top of the refueling hole has two square grooves, the bottom surface of the two square grooves has a circular groove, the top surface of the two circular grooves has two locking slots, the middle of the movable column is fixedly connected to two locking blocks, the two locking blocks engage with the locking slots, the circular plate is slidably connected to the cylindrical groove, the locking blocks are movably connected to the square grooves and the circular grooves, and the top of the movable column is fixedly connected to a control handle.

[0014] Preferably, the control component includes a circular ring, a tension spring, and a ball. The circular ring is fixedly connected to the top of the oil outlet, the top of the tension spring is fixedly connected to the bottom of the circular ring, and the ball is fixedly connected to the bottom of the tension spring. The ball movably contacts the bottom of the oil outlet and is located inside the oil delivery pipe.

[0015] Preferably, the two side covers have four through holes II, two solid pins are inserted into the four through holes II, the two solid pins are inserted into two through holes I, and the two through holes I are located on both sides of the support shaft.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. Through the cooperation of various components, the transmission assembly of this invention can quickly add lubricating oil from the oil storage chamber to the bearing and support shaft. The lubricating oil enters quickly, the lubrication effect is good, and it is beneficial to use.

[0018] 2. The sealing cap assembly inside the oil filling hole of the present invention is easy to disassemble and assemble, and has a good fixing and sealing effect, which can effectively prevent lubricating oil from flowing out of the oil storage cavity and facilitate subsequent use;

[0019] 3. The bearing sleeve integrated into the bearing inner housing of this invention reduces the direct contact between the bearing and the support shaft, effectively avoiding wear on the support shaft and making the operation more stable. Furthermore, through the cooperation of the anti-reverse nut and the tapped part, the bearing is blocked on the support shaft, which can effectively prevent the bearing from moving on the support shaft and make the connection tighter.

[0020] 4. The bearing of this invention replaces the existing copper bushing in direct contact with the support shaft, which reduces wear on the support shaft even when the wheel rotates at high speed. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is an exploded view of the present invention;

[0023] Figure 3 This is a partial cross-sectional schematic diagram of the present invention;

[0024] Figure 4 This is a schematic cross-sectional view of the present invention;

[0025] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0026] Figure 6 For the present invention Figure 4 Enlarged diagram of point B in the middle.

[0027] In the diagram: 1. Main body; 2. Wheel body; 3. Bearing groove; 4. Nut groove; 5. Side cover groove; 6. Bearing; 7. Support shaft; 8. Transmission assembly; 81. Column rod; 82. Rotating rod; 83. Rotating plate; 84. Rotating shaft one; 85. Rotating shaft two; 86. Square cavity one; 87. Bevel gear one; 88. Bevel gear two; 89. Square cavity two; 810. Control rod; 811. Piston plate; 9. Sealing cover assembly; 91. Sealing plug; 92. Columnar shell; 93. Columnar groove; 94. Spring; 95. Circular plate; 96. Movable column; 97. Locking block; 98. Locking groove; 99. Square groove; 910. Circular groove; 911. Control handle; 10. Oil reservoir; 11. Square shell; 12. Oil outlet; 13. Control assembly; 131. Circular ring plate; 132. Tension spring; 133. Ball; 14. Oil supply pipe; 15. Connecting pipe; 16. Tapping part; 17. Through hole one; 18. Anti-reverse nut; 19. Skeleton oil seal; 20. Side cover; 21. Through hole two; 22. Oil filling hole; 23. Solid pin. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] Reference Figure 2-4 This is the first embodiment of the present invention. This embodiment provides a wear-reducing support roller assembly, including a main body 1, two wheel bodies 2 fixedly sleeved on both sides of the outer wall of the main body 1, two bearing grooves 3, two nut grooves 4 and two side cover grooves 5 sequentially opened from the inside to the outside on both sides of the main body 1, two bearings 6 inserted into the two bearing grooves 3, the two bearings 6 fixedly installed on both sides of the support shaft 7, the support shaft 7 passing through the main body 1 and the inner wheel body 2, the bearings 6 are installed on the support shaft 7 and the outer ring is in contact with the main body 1, the side cover 20 is located on the side of the wheel body 2 and installed on the support shaft 7, the bearings 6 adopt a tapered roller structure, have the ability to self-align, and also have the ability to withstand high radial and axial loads;

[0031] Two transmission components 8 are provided at the top and bottom of the main body 1. Two oil storage chambers 10 are opened at the top and bottom of the main body 1. Four square shells 11 are slidably connected inside the two oil storage chambers 10. The oil storage chambers 10 store lubricating oil. When the square shells 11 are moved, they move closer to each other, squeezing the lubricating oil. The lubricating oil can provide lubrication for the bearings 6 and the support shafts 7, preventing them from excessive wear.

[0032] Two oil storage chambers 10 are connected on one side away from each other and have two oil filling holes 22. The two oil filling holes 22 are equipped with two sealing cap assemblies 9. The two oil storage chambers 10 are connected on one side close to each other and have two oil outlet holes 12. The two oil outlet holes 12 are equipped with two control components 13. Users can add lubricating oil into the oil storage chambers 10 through the oil filling holes 22. The sealing cap assemblies 9 help to seal the oil filling holes 22. The sealing components are easy to open and close and convenient for users to use. When the square shell 11 is squeezed inward, the pressure in the oil storage chambers 10 increases, which causes the control components 13 to move downward and the lubricating oil flows out from the oil outlet holes 12.

[0033] A connecting pipe 15 is fixedly connected to the middle of the inner wall of the main body 1. Two oil supply pipes 14 are opened at the top and bottom of the connecting pipe 15. The oil supply pipes 14, the oil outlet hole 12 and the bearing groove 3 are interconnected to help the lubricating oil flow normally.

[0034] Example 2

[0035] Reference Figure 2-6 This is the second embodiment of the present invention, which is based on the previous embodiment. Specifically, the transmission assembly 8 includes a cylindrical rod 81, a rotating rod 82, and a rotating plate 83. Two square shells 11 located on one side are fixedly connected to the two cylindrical rods 81, which are far apart from each other. The middle of the two cylindrical rods 81 is rotatably connected to one end of the two rotating rods 82. The other end of the two rotating rods 82 is rotatably connected to four rotating plates 83. Two rotating shafts 84 and two rotating shafts 85 are fixedly connected to one side of the four rotating plates 83. The two rotating shafts 84 and two rotating shafts 85 are rotatably connected to two square cavities 86. The two square cavities 86 are opened on both sides of the oil storage cavity 10. Rotating the rotating shafts 84 and 85 causes the rotating plates 83 to rotate. The rotation of the rotating plates 83 causes the rotating rods 82 to rotate and move. The other end of the rotating rods 82 rotates on the cylindrical rods 81, which in turn causes the cylindrical rods 81 to move. The movement of the cylindrical rods 81 causes the square shells 11 to move.

[0036] Two rotating shafts 85 are fixedly connected to two bevel gears 87 at one end. The two bevel gears 87 mesh with two bevel gears 88. The two bevel gears 88 are fixedly sleeved with a control rod 810. The control rod 810 is rotatably connected to the main body 1. Rotating the control rod 810 causes the bevel gears 88 to rotate, which in turn causes the bevel gears 87 to rotate, and the bevel gears 87 to rotate, which in turn causes the rotating shafts 85 to rotate.

[0037] Four square cavities 89 are opened at the top and bottom of the main body 1. The bevel gear 87 and bevel gear 88 are located inside the square cavities 89. The square cavities 89 help the bevel gear 87 and bevel gear 88 to work normally. Two square shells 11 located on one side are fixedly connected to two piston plates 811 close to each other on one side. The piston plates 811 help to better deliver lubricating oil to the bearing 6 and the support shaft 7.

[0038] The sealing cap assembly 9 includes a sealing plug 91, a cylindrical shell 92, and a spring 94. The sealing plug 91 is inserted into the oil filling hole 22. The top of the sealing plug 91 is fixedly connected to the cylindrical shell 92. A cylindrical groove 93 is opened inside the cylindrical shell 92. One end of the spring 94 is fixedly connected to the bottom surface of the cylindrical groove 93. The other end of the spring 94 is fixedly connected to a circular piece 95. A movable column 96 is fixedly connected to the top surface of the circular piece 95. When the movable column 96 is pressed, the sealing plug 91 is inserted into the oil filling hole 22. The movement of the movable column 96 drives the circular piece 95 to move. The cooperation between the circular piece 95 and the cylindrical groove 93 compresses the cylindrical groove 93.

[0039] Two square grooves 99 are opened at the top of the oil filling hole 22, and round grooves 910 are opened on the bottom surface of the two square grooves 99. Two locking slots 98 are opened on the top surface of both sides of the round grooves 910. Two locking blocks 97 are fixedly connected in the middle of the movable column 96. The two locking blocks 97 are engaged with the locking slots 98. The movable column 96 moves, which drives the locking blocks 97 to move in the square grooves 99. When the locking blocks 97 move to the position of the round groove 910, the movable column 96 is rotated. The rotation of the movable column 96 drives the locking blocks 97 to rotate. After the locking blocks 97 rotate to the position of the locking slots 98, the movable column 96 is released. The spring 94 uses its elastic force to restore the round piece 95 to its original position. The locking blocks 97 are engaged in the locking slots 98, and the fixation is completed.

[0040] The circular piece 95 is slidably connected to the cylindrical groove 93, the locking block 97 is movably connected to the square groove 99 and the circular groove 910, and the top of the movable column 96 is fixedly connected to the control handle 911, which helps to control the movable column 96.

[0041] The control component 13 includes a ring plate 131, a tension spring 132, and a ball 133. The top of the oil outlet 12 is fixedly connected to the ring plate 131, the bottom surface of the ring plate 131 is fixedly connected to the top of the tension spring 132, and the bottom end of the tension spring 132 is fixedly connected to the ball 133. The ball 133 moves to contact the bottom of the oil outlet 12. The ball 133 is located inside the oil supply pipe 14. When the pressure in the oil storage chamber 10 is too high, the lubricating oil flows through the oil outlet 12 to the ball 133. The lubricating oil pressurizes the ball 133 downward. The movement of the ball 133 pulls the tension spring 132 downward, and the ball leaves the bottom of the oil outlet 12. The lubricating oil then flows out of the oil outlet 12 normally.

[0042] Two tapped sections 16 are provided on both sides of the support shaft 7. The two tapped sections 16 are threaded to two anti-reverse nuts 18. Two skeleton oil seals 19 are sleeved around the two anti-reverse nuts 18. The two anti-reverse nuts 18 and the two skeleton oil seals 19 are inserted into two nut grooves 4. When the anti-reverse nuts 18 are rotated, the anti-reverse nuts 18 are installed on the support shaft 7 through the tapped sections 16 and are located on one side of the bearing 6. The anti-reverse nuts 18 can prevent the bearing 6 from moving and help the bearing 6 work better. The skeleton oil seals 19 are set in the nut grooves 4 between the main body 1 and the wheel body 2 and are located on the outer ring of the anti-reverse nuts 18, and prevent the internal lubricating oil from flowing out.

[0043] Two side covers 20 are inserted into the two side cover grooves 5. The two side covers 20 have four through holes 21. Two solid pins 23 are inserted into the four through holes 21. The two solid pins 23 are inserted into two through holes 17. The two through holes 17 are located on both sides of the support shaft 7. The solid pins 23 installed on the side covers 20 can play an alignment role.

[0044] Example 3

[0045] Reference Figure 1-6This is the third embodiment of the present invention, based on the above two embodiments. A support shaft 7 passes through the main body 1 and the inner wheel body 2. A bearing 6 is mounted on the support shaft 7, with its outer ring fitting against the main body 1. A side cover 20 is located on the side of the wheel body 2 and mounted on the support shaft 7. The bearing 6 adopts a tapered roller structure, possessing self-aligning capability and the ability to withstand high radial and axial loads. A locking nut 18 is rotated; the locking nut 18 is mounted on the support shaft 7 via a tapped part 16 and is located on one side of the bearing 6. The locking nut 18 prevents the bearing 6 from shifting, helping it to work better. A skeleton oil seal 19 is located in the nut groove 4 between the main body 1 and the wheel body 2 and is located on the outer ring of the locking nut 18, preventing internal lubricating oil from flowing out. The side cover... The solid pin 23 installed on 20 serves as an alignment element. During use, lubricating oil is added through the oil filling hole 22. The movable column 96 is pressed down, and the sealing plug 91 is inserted into the oil filling hole 22. The movable column 96 moves, causing the disc 95 to move. The disc 95, in conjunction with the cylindrical groove 93, compresses the groove. The movable column 96 then moves the locking block 97 within the square groove 99. When the locking block 97 reaches the position of the circular groove 910, the movable column 96 is rotated. This rotation causes the locking block 97 to rotate. Once the locking block 97 reaches the position of the locking slot 98, the movable column 96 is released. The spring 94 uses its elasticity to return the disc 95 to its original position, and the locking block 97 engages with the locking slot 98, completing the fixation. The sealing cap assembly 9 helps seal the oil filling hole 22. The sealing assembly switch... For ease of use, when lubricating oil needs to be added to bearing 6 and support shaft 7, the control lever 810 is rotated. The rotation of control lever 810 drives bevel gear 2 88 to rotate, which in turn drives bevel gear 1 87 to rotate. Bevel gear 1 87 drives rotating shaft 2 85 to rotate, which in turn drives rotating plate 83 to rotate, simultaneously driving rotating shaft 1 84 to rotate. Rotating plate 83 drives rotating rod 82 to rotate and move. The other end of rotating rod 82 rotates on cylindrical rod 81, simultaneously driving cylindrical rod 81 to move. The movement of cylindrical rod 81 drives square housing 11 to move, which in turn drives piston plate 811 to move. When piston plate 811 moves, if the pressure in oil reservoir 10 is too high, lubricating oil flows through oil outlet 12 to 133. The lubricating oil pressurizes the ball 133 downwards, causing the ball 133 to move and pull the tension spring 132 downwards. The ball moves away from the bottom of the oil outlet 12, and the lubricating oil flows out of the normal oil outlet 12. The lubricating oil flows through the oil supply pipe 14 to the bearing 6 and the support shaft 7, providing lubrication for the bearing 6 and the support shaft 7 and preventing excessive wear. Through the cooperation of various components, the transmission assembly 8 can quickly add the lubricating oil from the oil reservoir 10 to the bearing 6 and the support shaft 7. The lubricating oil enters quickly, providing good lubrication and facilitating use. The sealing cap assembly 9 inside the oil filling hole 22 is easy to install and remove, and has a good fixing and sealing effect, effectively preventing the lubricating oil from flowing out of the oil reservoir 10, facilitating subsequent use. The bearing 6 has a bearing sleeve built into it.By reducing the direct contact between bearing 6 and support shaft 7, wear on support shaft 7 is effectively avoided, resulting in smoother operation. Furthermore, the engagement of the anti-reverse nut 18 and the tapped part 16 secures bearing 6 to support shaft 7, effectively preventing bearing 6 from shifting on support shaft 7 and ensuring a tighter connection. This invention replaces the existing direct contact between bearing 6 and support shaft 7 with the existing copper sleeve, thus reducing wear on support shaft 7 even during high-speed rotation of the wheel body 2.

[0046] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-reducing track roller assembly, comprising: The main body comprises a main tube, wheel bodies, a support shaft, bearings, anti-reverse nuts, tapped parts, skeleton oil seals, and side covers. Two wheel bodies are fixedly sleeved on both sides of the outer wall of the main tube. Two bearing grooves, two nut grooves, and two side cover grooves are sequentially formed on both sides of the main tube from the inside to the outside. Two bearings are inserted into the two bearing grooves and fixedly installed on both sides of the support shaft. Two side covers are inserted into the two side cover grooves. The support shaft passes through the main tube. Two tapped parts are formed on both sides of the support shaft. The two tapped parts are threadedly connected to two anti-reverse nuts. Two skeleton oil seals are sleeved around the two anti-reverse nuts. The two anti-reverse nuts and the two skeleton oil seals are inserted into the two nut grooves. The main body has two transmission components at its top and bottom, and two oil storage chambers at its top and bottom. Four square shells are slidably connected inside the two oil storage chambers. Two oil filling holes are opened through the two oil storage chambers on opposite sides, and two sealing cap assemblies are installed inside the two oil filling holes. Two oil outlet holes are opened on opposite sides of the two oil storage chambers, and two control components are installed inside the two oil outlet holes. A connecting pipe is fixedly connected to the middle of the inner wall of the main body. Two oil delivery pipes are opened at the top and bottom of the connecting pipe. The oil delivery pipes, oil outlet holes, and bearing grooves are interconnected. The transmission assembly includes a cylindrical rod, a rotating rod, and rotating plates. Two square shells located on one side are fixedly connected to two cylindrical rods on opposite sides. The middle of the two cylindrical rods is rotatably connected to one end of two rotating rods. The other ends of the two rotating rods are rotatably connected to four rotating plates. Two rotating shafts and two rotating shafts are fixedly connected to one side of the four rotating plates. The two rotating shafts and two rotating shafts are rotatably connected to two square cavities. The two square cavities are opened on both sides of the oil storage cavity. Two rotating shafts are fixedly connected to two bevel gears at one end, the two bevel gears mesh with two bevel gears, the two bevel gears are fixedly sleeved with a control rod, and the control rod is rotatably connected to the main body; The main body has four square cavities at the top and bottom. The bevel gear one and bevel gear two are located inside the square cavities. Two square shells located on one side are fixedly connected to two piston plates close to each other on one side.

2. The wear-reducing support roller assembly according to claim 1, characterized in that: Both bearings are tapered roller bearings.

3. The wear-reducing support roller assembly according to claim 1, characterized in that: The sealing cap assembly includes a sealing plug, a cylindrical shell, and a spring. The sealing plug is inserted into the oil filling hole. The top of the sealing plug is fixedly connected to the cylindrical shell. A cylindrical groove is formed inside the cylindrical shell. One end of the spring is fixedly connected to the bottom surface of the cylindrical groove. A circular plate is fixedly connected to the other end of the spring. A movable column is fixedly connected to the top surface of the circular plate.

4. A wear-reducing support roller assembly according to claim 3, characterized in that: Two square grooves are formed at the top of the refueling hole, and round grooves are formed on the bottom surface of the two square grooves. Two slots are formed on the top surface of both sides of the round grooves. Two locking blocks are fixedly connected to the middle of the movable column. The two locking blocks engage with the slots. The round plate is slidably connected to the cylindrical groove. The locking blocks are movably connected to the square grooves and the round grooves. A control handle is fixedly connected to the top of the movable column.

5. A wear-reducing support roller assembly according to claim 1, characterized in that: The control component includes a circular ring, a tension spring, and a ball. The circular ring is fixedly connected to the top of the oil outlet, the top of the tension spring is fixedly connected to the bottom of the circular ring, and the ball is fixedly connected to the bottom of the tension spring. The ball is in contact with the bottom of the oil outlet and is located inside the oil delivery pipe.

6. The wear-reducing support roller assembly according to claim 1, characterized in that: The two side covers have four through holes 2, and two solid pins are inserted into the four through holes 2. The two solid pins are inserted into two through holes 1, and the two through holes 1 are opened on both sides of the support shaft.

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