Belt pulley bearing lubricating system

Abstract

The belt pulley bearing lubricating system comprises a belt pulley and a plurality of bearings, barrels are arranged at the two ends of the belt pulley, the bearings are installed in openings of the barrels in a cold pressing mode, the belt pulley is composed of a pulley body, a web and a center connecting column, and a shaft rod is installed in the center connecting column; the two ends of the shaft rod are installed in inner rings of the bearings, the web plate is installed between the center connecting column and the wheel body, the web plate, the center connecting column and the tire are combined to form oil storage grooves through annular structures, annular cover plates are installed in openings of the oil storage grooves, a plurality of oil outlet holes are formed in the annular cover plates, and balls are movably installed in the oil outlet holes. And oil pumping mechanisms are mounted on the cylinders. The double-layer oil injection device is simple in structure and has a double-layer oil injection effect, one is completed through rotation of the belt pulley, and the other is completed in a drawing mode so as to adapt to adding amounts of different degrees.

Description

Technical Field

[0001] The invention relates to the technical field of pulley lubrication, and in particular to a pulley bearing lubrication system. Background Art

[0002] The pulley belongs to the hub type parts, which are generally relatively large in size. The manufacturing process is mainly based on casting and forging. It is mainly used in the occasions of long-distance power transmission, such as the output of small diesel engine power, agricultural vehicles, tractors, automobiles, mining machinery, mechanical processing equipment, textile machinery, packaging machinery, lathes, forging machines, some small horsepower motorcycle power transmission, agricultural machinery power transmission, air compressors, reducers, reducers, generators, cotton ginning machines, etc.

[0003] At present, pulleys generally rotate in a circle through bearings. However, after the pulley is installed, lubricating oil needs to be added to the bearings to ensure the smoothness of the bearing rotation. However, the current bearing installation structure is simple, and it is impossible to add lubricating oil to the bearings quickly or continuously, which will affect the smoothness of the bearing rotation. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a pulley bearing lubrication system, in which the pulley automatically lubricates the oil. During the rotation of the pulley, centrifugal force is generated, thereby automatically pushing out the lubricating oil and automatically injecting it into the bearing to solve the problems raised in the above background technology.

[0005] The present invention is achieved through the following technical solutions: a pulley bearing lubrication system, comprising a pulley and multiple bearings, wherein both ends of the pulley are provided with a cylinder, and the bearings are installed in the opening of the cylinder by cold pressing, the pulley is composed of a wheel body, a web and a central connecting column, a shaft rod is installed in the central connecting column, both ends of the shaft rod are installed in the inner ring of the bearing, the web is installed between the central connecting column and the wheel body, and the combination of annular structures between the web, the central connecting column and the tire forms an oil storage tank, annular cover plates are installed in the opening of the oil storage tank, a plurality of oil outlet holes are provided on the annular cover plates, balls are movably installed in the oil outlet holes, and an oil pumping mechanism is installed on the cylinder.

[0006] As a preferred technical solution, the bearings are composed of an outer ring, an inner ring and multiple balls. The multiple balls are installed in an annular structure between the outer ring and the inner ring. The outer ring and the inner ring are provided with arc grooves of annular structure on the side facing the pulley. Channels are formed between the arc grooves for lubricating oil to enter the inner part of the outer ring and the inner ring. The two arc grooves are combined to form an annular groove with a hemispherical cross-section. A part of the sphere extends into the annular groove through the opening on one side of the oil outlet.

[0007] As a preferred technical solution, the oil pumping mechanism includes a piston, a pulling rod, a compression spring and a handle. The piston is arranged inside the cylinder, and the outer ring surface of the piston is arranged in contact with the inner ring surface of the cylinder. Pull-out openings are provided on the opposite end surfaces of the cylinder. One end of the pulling rod passes through the pulling opening and is installed on the piston, and the other end is arranged outside and fixedly connected to the handle. The compression spring is sleeved on the outside of the pulling rod, and one end of the compression spring is installed on the cylinder, and the other end is installed on the handle.

[0008] As a preferred technical solution, an air outlet pipe communicating with the inner cavity of the cylinder is installed on the outer wall surface of the cylinder, and a valve is installed on the air outlet pipe.

[0009] As a preferred technical solution, the outer ring surface of the oil storage tank is protruding to form a guide portion with an annular structure.

[0010] As a preferred technical solution, both ends of the oil outlet hole are opened, the inner diameter of the openings at both ends of the oil outlet hole is smaller than the diameter of the sphere, a part of the sphere extends along the opening at the other end of the oil outlet hole to the inside of the oil storage tank, and a gap is formed between the sphere and the oil outlet hole for the lubricating oil to pass through.

[0011] As a preferred technical solution, a support seat is installed on the bottom surface of the cylinder, the support seat is arranged in an "L"-shaped structure, and a plurality of fixing holes are arranged on the bottom surface of the support seat.

[0012] As a preferred technical solution, a gap is provided between the open end surface of the cylinder and the side surface of the pulley.

[0013] As a preferred technical solution, a positioning ring is installed inside the cylinder, and one side of the positioning ring is arranged to abut against the bearing.

[0014] As a preferred technical solution, the inner wall surface of the oil storage tank opening is provided with internal threads, the outer ring surface of the annular cover plate is provided with external threads, and the annular cover plate is meshed and connected with the internal threads on the oil storage tank opening through the external threads.

[0015] The beneficial effects of the present invention are:

[0016] 1. The pulley is equipped with an oil storage tank, which can store the lubricating oil in the oil storage tank. During the rotation of the pulley, the centrifugal force generated can act on the lubricating oil inside, so that the lubricating oil flows along the guide part to the oil outlet hole, and the rotating ball can slowly bring out the lubricating oil and automatically inject it into the bearing;

[0017] 2. By pulling the handle outward, negative pressure can be generated inside the cylinder, and the lubricating oil that has entered the annular groove or is located inside the oil outlet hole can be quickly extracted, so that the lubricating oil can be added to a large area at one time, increasing the amount of addition. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a side view of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the present invention after removing one side of the cylinder;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention after the piston is further removed;

[0023] Figure 5 It is a structural schematic diagram of the annular cover plate in the present invention;

[0024] Figure 6 It is a structural schematic diagram of the oil storage tank in the present invention;

[0025] Figure 7 is a cross-sectional view of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the bearing in the present invention.

[0027] Among them, 1. pulley; 2. cylinder; 3. support seat; 4. handle; 5. exhaust pipe; 6. pull rod; 7. compression spring; 8. piston; 9. bearing; 10. outer ring; 11. inner ring; 12. shaft; 13. annular cover plate; 14. ball; 15. oil storage tank; 16. ball; 17. positioning ring; 18. annular groove. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0030] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, a pulley bearing lubrication system of the present invention comprises a pulley 1 and a plurality of bearings 9, wherein both ends of the pulley 1 are provided with a cylinder 2, and the bearings 9 are installed in the opening of the cylinder 2 by cold pressing, and the pulley 1 is composed of a wheel body, a web and a central connecting column, and a shaft 12 is installed in the central connecting column, and both ends of the shaft 12 are installed in the inner ring of the bearing 9, and the web is installed between the central connecting column and the wheel body, and the combination of annular structures between the web, the central connecting column and the tire forms an oil storage tank 15, and an annular cover plate 13 is installed in the opening of the oil storage tank 15, and a plurality of oil outlet holes are provided on the annular cover plate 13, and a ball 14 is movably installed in the oil outlet hole, and an oil pumping mechanism is installed on the cylinder 2.

[0032] In this embodiment, the bearing 9 is composed of an outer ring 10, an inner ring 11 and a plurality of balls 16. The plurality of balls 16 are installed between the outer ring 10 and the inner ring 11 in an annular structure. The outer ring 10 and the inner ring 11 are provided with an arc groove of an annular structure on the side facing the pulley 1. Channels are formed between the arc grooves for lubricating oil to enter the inner part of the outer ring 10 and the inner ring 11. The two arc grooves are combined to form an annular groove 18 with a hemispherical cross-section. A portion of the sphere 14 extends into the annular groove 18 through the opening on one side of the oil outlet.

[0033] In this embodiment, the oil pumping mechanism includes a piston 8, a pulling rod 6, a compression spring 7 and a handle 4. The piston 8 is arranged inside the cylinder 2. The outer ring surface of the piston 8 is arranged in contact with the inner ring surface of the cylinder 2. A pulling port is provided on the opposite end surface of the cylinder 2. One end of the pulling rod 6 passes through the pulling port and is installed on the piston 8, and the other end is arranged outside and fixedly connected to the handle 4. The compression spring 7 is sleeved on the outside of the pulling rod 6, one end of the compression spring 7 is installed on the cylinder 2, and the other end is installed on the handle 4.

[0034] In this embodiment, an air outlet pipe 5 communicating with the inner cavity of the cylinder 2 is installed on the outer wall surface of the cylinder 2, and a valve is installed on the air outlet pipe 5.

[0035] In this embodiment, the outer ring surface of the oil storage tank 15 is protruding to form a guide portion of an annular structure, and the lubricating oil inside can be guided toward the annular cover plate through the guide portion.

[0036] In this embodiment, both ends of the oil outlet hole are opened, and the inner diameter of the openings at both ends of the oil outlet hole is smaller than the diameter of the sphere 14. A portion of the sphere 14 extends along the opening at the other end of the oil outlet hole to the interior of the oil storage tank 15, and a gap is formed between the sphere 14 and the oil outlet hole for the lubricating oil to pass through.

[0037] In this embodiment, a support seat 3 is installed on the bottom surface of the cylinder 2. The support seat 3 is arranged in an "L"-shaped structure. A plurality of fixing holes are arranged on the bottom surface of the support seat 3. Bolts can pass through the fixing holes to fix the cylinder on any platform or plane. After the bolts are removed, the cylinder can be removed from the shaft rod outward. After the obstruction of the cylinder is lost, the annular cover plate can be rotated to open the oil storage tank, which is convenient for adding lubricating oil to the inside, and the installation and removal of the annular cover plate are facilitated by the threaded connection.

[0038] In this embodiment, a gap is provided between the open end surface of the cylinder 2 and the side surface of the pulley 1, so as to avoid friction between the pulley and the cylinder during rotation.

[0039] In this embodiment, a positioning ring 17 is installed inside the cylinder 2, and one side of the positioning ring 17 is arranged to contact the bearing 9. The positioning ring can limit the depth of the bearing installation to avoid excessive entry.

[0040] In this embodiment, the inner wall surface of the opening of the oil storage tank 15 is provided with internal threads, and the outer ring surface of the annular cover plate 13 is provided with external threads. The annular cover plate 13 is meshed and connected with the internal threads on the opening of the oil storage tank 15 through the external threads.

[0041] The oil storage tank contains lubricating oil, so when the pulley rotates, the pulley generates centrifugal force, which acts on the lubricating oil in the oil storage tank, causing the lubricating oil to move along the guide portion toward the annular cover plate until it contacts a part of the sphere.

[0042] Part of the sphere extends into the annular groove and contacts the inner ring of the bearing. During the rotation of the pulley, the pulley drives the shaft to rotate, and the rotation of the shaft drives the inner ring of the bearing. Since the inner ring contacts the sphere, the rotation of the inner ring drives the sphere. The rotating sphere can continuously bring out the lubricating oil through the oil outlet hole and smear it in the annular groove. Although the lubricating oil continues to enter, the lubricating oil entering at the back will squeeze the lubricating oil in front until the lubricating oil enters the interior of the bearing through the through hole to complete the lubrication operation of the bearing.

[0043] When the amount of lubricating oil added is insufficient, the handle can be pulled outwards, and the movement of the handle drives the pull-out rod, and the movement of the pull-out rod drives the piston. After the piston rod moves outwards, negative pressure is generated inside the cylinder, and the lubricating oil that has entered the annular groove or the oil outlet hole is quickly drawn out and squeezed into the bearing through the through hole, so that the lubricating oil can be added to a large area at one time to ensure the lubrication degree of the bearing.

[0044] When the piston rod moves inward, in order to avoid pushing out the injected lubricating oil, the valve can be opened so that the gas inside the cylinder can be discharged along the outlet pipe.

[0045] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims

1. A pulley bearing lubrication system, characterized in that: The invention comprises a pulley (1) and a plurality of bearings (9), wherein a cylinder (2) is provided at both ends of the pulley (1), and the bearings (9) are installed in the opening of the cylinder (2) by cold pressing. The pulley (1) is composed of a wheel body, a web and a central connecting column, wherein a shaft (12) is installed in the central connecting column, and both ends of the shaft (12) are installed in the inner ring of the bearing (9), and the web is installed between the central connecting column and the wheel body. The web, the central connecting column and the tire are combined into an annular structure to form an oil storage tank (15), and an annular cover plate (13) is installed in the opening of the oil storage tank (15), and a plurality of oil outlet holes are provided on the annular cover plate (13), and a ball (14) is movably installed in the oil outlet hole, and an oil pumping mechanism is installed on the cylinder (2).

2. The pulley bearing lubrication system according to claim 1, characterized in that: The bearing (9) comprises an outer ring (10), an inner ring (11) and a plurality of balls (16). The plurality of balls (16) are installed between the outer ring (10) and the inner ring (11) in an annular structure. The outer ring (10) and the inner ring (11) are provided with an annular arc groove on one side facing the pulley (1). A channel is formed between the arc grooves for lubricating oil to enter the outer ring (10) and the inner ring (11). The two arc grooves are combined to form an annular groove (18) with a hemispherical cross-section. A portion of the ball (14) extends into the annular groove (18) through an opening on one side of the oil outlet.

3. The pulley bearing lubrication system according to claim 1, characterized in that: The oil pumping mechanism comprises a piston (8), a pulling rod (6), a compression spring (7) and a handle (4); the piston (8) is arranged inside the cylinder (2); the outer ring surface of the piston (8) is arranged in contact with the inner ring surface of the cylinder (2); a pulling port is provided on the opposite end surface of the cylinder (2); one end of the pulling rod (6) passes through the pulling port and is installed on the piston (8); the other end is arranged outside and fixedly connected to the handle (4); the compression spring (7) is sleeved on the outside of the pulling rod (6); one end of the compression spring (7) is installed on the cylinder (2) and the other end is installed on the handle (4).

4. The pulley bearing lubrication system according to claim 1, characterized in that: An air outlet pipe (5) communicating with the inner cavity of the cylinder (2) is installed on the outer wall surface of the cylinder (2), and a valve is installed on the air outlet pipe (5).

5. The pulley bearing lubrication system according to claim 1, characterized in that: The outer ring surface of the oil storage groove (15) is protruding to form a flow guide portion with an annular structure.

6. The pulley bearing lubrication system according to claim 1, characterized in that: Both ends of the oil outlet hole are open, and the inner diameters of the openings at both ends of the oil outlet hole are smaller than the diameter of the sphere (14). A portion of the sphere (14) extends along the opening at the other end of the oil outlet hole to the inside of the oil storage tank (15), and a gap is formed between the sphere (14) and the oil outlet hole for the lubricating oil to pass through.

7. The pulley bearing lubrication system according to claim 1, characterized in that: A support seat (3) is installed on the bottom surface of the cylinder (2); the support seat (3) is arranged in an "L"-shaped structure; and a plurality of fixing holes are arranged on the bottom surface of the support seat (3).

8. The pulley bearing lubrication system according to claim 1, characterized in that: A gap is provided between the open end surface of the cylinder (2) and the side surface of the pulley (1).

9. The pulley bearing lubrication system according to claim 1, characterized in that: A positioning ring (17) is installed inside the cylinder (2), and one side surface of the positioning ring (17) is arranged to abut against the bearing (9).

10. The pulley bearing lubrication system according to claim 1, characterized in that: The inner wall surface of the opening of the oil storage tank (15) is provided with an internal thread, the outer ring surface of the annular cover plate (13) is provided with an external thread, and the annular cover plate (13) is meshed and connected with the internal thread on the opening of the oil storage tank (15) through the external thread.

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