Bearing grease injector
By positioning the bearing body with a limiting rod and a limiting ring, and by combining a baffle, a lighting lamp, and a heating rod to optimize the oil injection process, the problem of time-consuming oil injection of bearing grease in the existing technology is solved, and rapid and accurate oil injection and grease protection are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN DONGSAI TECHNOLOGY CO LTD
- Filing Date
- 2025-09-08
- Publication Date
- 2026-06-19
Smart Images

Figure CN224381207U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grease injectors, specifically a bearing grease injector. Background Technology
[0002] Bearings are key components in mechanical engineering, used to support and reduce friction in rotating equipment, enabling the equipment to operate smoothly. Friction is one of the main causes of energy loss in mechanical systems, and lubricants can form a lubricating film.
[0003] Bearing grease injectors are precision oil supply devices specifically designed for bearings. They can be classified into manual, electric, and pneumatic types according to their drive method. They are widely applicable to the maintenance of bearings in equipment such as motors, fans, and conveyors, extending the service life of bearings.
[0004] The existing method of lubricating bearings involves injecting oil between the balls inside the bearing. This requires placing the bearing below the oil inlet and adjusting it to align with the inlet before lowering it to inject the oil, which is time-consuming during the lubrication and installation process.
[0005] Therefore, a bearing grease injector is proposed to address the above problems. Utility Model Content
[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A bearing grease injector of this utility model includes a support base, a cylinder fixedly connected to the top of the support base; a round rod fixedly connected to the output end of the cylinder; the round rod is through-mounted and slidably connected to the support base; a fixing plate fixedly connected to the bottom of the round rod; multiple oil injection pipes fixedly connected to the bottom of the fixing plate; multiple limiting rods fixedly connected to the middle of the support base; a limiting ring is formed inside the support base; the limiting ring is located outside the limiting rods; a bearing grease injector is slidably fitted inside the limiting ring. The bearing body and the limiting rod are in a sliding fit; a connecting pipe is fixedly connected to the top of the fixing plate; the connecting pipe and multiple fixing plates are in communication; by adding a limiting rod and a limiting ring, when the bearing body is placed, the protrusion of the limiting rod enters the interior of the bearing body to restrict the balls on both sides, while the limiting ring will lower the bearing body to restrict the outer side of the bearing body. Thus, the bearing body is positioned both inside and outside by the limiting rod and the limiting ring. After the oil injection pipe moves down, it will make precise contact with the cavity, thereby quickly injecting grease.
[0008] Preferably, the top of the limiting rod is threaded with a bolt; a baffle is fixedly connected to the top of the bolt; the baffle and the bearing body are in sliding fit; by adding the baffle, the contact between the grease and the inside of the bearing body can be accelerated during oil injection, thereby increasing the lubrication contact speed. At the same time, the baffle can be quickly disassembled and installed for cleaning.
[0009] Preferably, a pair of metal rods are slidably fitted inside the fixing plate; a protective cover is fixedly connected to the bottom of the metal rods; a pair of magnets are fixedly connected to the top of the fixing plate; the magnets and the protective cover are correspondingly arranged; by adding the protective cover, the oil filling pipe can be closed through the protective cover when not in use, thereby reducing the drying of the grease by the airflow, and at the same time reducing the contamination of the grease by substances in the airflow.
[0010] Preferably, a pair of fixing rods are fixed to the inner wall of the support base; a lighting lamp is fixed to the end of each fixing rod; the lighting lamp is inclined; by adding a lighting lamp, the condition of the grease inside the bearing body can be quickly determined by light illumination after the bearing body has been lubricated, thus improving the visual inspection effect.
[0011] Preferably, a heating rod is fixed to the inner wall of the protective cover; multiple heating rods are provided on the protective cover; by adding heating rods, the oil injection pipe can be heated, causing the grease inside to flow quickly, thereby speeding up the preparation work during oil injection.
[0012] Preferably, the protective cover has a collection groove at the bottom; the collection groove is located below the fixing plate; by adding the collection groove, the dripping oil can be gathered and its scattering can be reduced.
[0013] The advantages of this utility model are:
[0014] 1. The bearing grease injector of this utility model, by adding a limiting rod and a limiting ring, allows the bearing body to be placed. The protrusion of the limiting rod enters the interior of the bearing body to restrict the balls on both sides. At the same time, the limiting ring restricts the lowering part of the bearing body to the outside of the bearing body. Thus, the bearing body is positioned inside and out simultaneously by the limiting rod and the limiting ring. After the oil injection pipe moves down, it will make precise contact with the cavity, thereby quickly injecting grease.
[0015] 2. The bearing grease injector of this utility model has a bolt threadedly connected to the top of the limiting rod; a baffle is fixedly connected to the top of the bolt; the baffle and the bearing body are in sliding fit; by adding the baffle, the contact between the grease and the inside of the bearing body can be accelerated during grease injection, thereby increasing the lubrication contact speed, and the baffle can be quickly disassembled and installed for cleaning. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the main body of this utility model;
[0018] Figure 2 This is a schematic diagram of the cylinder structure in this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the fixing rod in this utility model;
[0020] Figure 4 This is a schematic diagram of the bearing body in this utility model;
[0021] Figure 5 This is a schematic diagram of the protective cover in this utility model.
[0022] In the diagram: 1. Support base; 11. Cylinder; 12. Round rod; 13. Fixing plate; 14. Oil injection pipe; 15. Limiting rod; 16. Limiting ring; 17. Bearing body; 18. Connecting pipe; 2. Bolt; 21. Baffle; 3. Protective cover; 31. Metal rod; 32. Magnet; 4. Fixing rod; 41. Lighting lamp; 5. Heating rod; 6. Collection tank. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0024] Specific implementation examples are given below.
[0025] like Figures 1 to 5As shown in the embodiment of this utility model, a bearing grease injector includes a support base 1, a cylinder 11 fixedly connected to the top of the support base 1; a round rod 12 fixedly connected to the output end of the cylinder 11; the round rod 12 is through-mounted and slidably connected to the support base 1; a fixing plate 13 is fixedly connected to the bottom of the round rod 12; multiple oil injection pipes 14 are fixedly connected to the bottom of the fixing plate 13; multiple limiting rods 15 are fixedly connected to the middle of the support base 1; a limiting ring 16 is formed inside the support base 1; the limiting ring 16 is located outside the limiting rods 15; a bearing body 1 is slidably fitted inside the limiting ring 16. 7; The bearing body 17 and the limiting rod 15 are in sliding fit; A connecting pipe 18 is fixedly connected to the top of the fixing plate 13; The connecting pipe 18 and multiple fixing plates 13 are in communication; During operation, when lubricating the bearing body 17, the bearing body 17 is first placed inside the support seat 1 so that it contacts the limiting rod 15. After contacting the limiting rod 15, the bearing body 17 is placed inside the limiting ring 16. After being placed inside the limiting ring 16, it contacts the limiting rod 15 through the balls inside the bearing body 17. During contact, the bearing body 17 will generate friction due to the downward force when it contacts the limiting rod 15. This friction causes the balls to rotate, which in turn rotates the bearing body 17, causing it to insert the limiting rod 15 into the cavity between the balls. This quickly adjusts the position of the bearing body 17. Once the adjustment is complete, the limiting rod 15 is positioned between the balls, thus positioning the bearing body 17. After the bearing body 17 is in place, the cavity between the balls will be aligned with the position of the oil injection pipe 14. At this point, the connecting pipe 18 is connected to the gear pump, which delivers lubricating grease through the connecting pipe 18 into the oil injection pipe 14. Simultaneously, the cylinder 11 is activated, causing it to drive the fixed plate 13 via the round rod 12. After the fixing plate 13 moves down, multiple oil injection pipes 14 will be inserted into the bearing body 17, and grease will be injected at this time. By adding a limiting rod 15 and a limiting ring 16, when the bearing body 17 is placed, the protrusion of the limiting rod 15 enters into the bearing body 17 to restrict the balls on both sides. At the same time, the limiting ring 16 will restrict the lowered part of the bearing body 17 to the outside of the bearing body 17. Thus, the bearing body 17 is positioned inside and outside simultaneously by the limiting rod 15 and the limiting ring 16. Then, after the oil injection pipes 14 move down, they will make precise contact with the cavity, thereby quickly injecting grease.
[0026] like Figures 1 to 4As shown, a bolt 2 is threadedly connected to the top of the limiting rod 15; a baffle 21 is fixedly connected to the top of the bolt 2; the baffle 21 and the bearing body 17 are in sliding fit; during operation, before placing the bearing body 17, the baffle 21 and bolt 2 are placed on the top of the limiting rod 15, and then the baffle 21 is rotated to drive the bolt 2 to rotate. During rotation, the grease will continuously enter the oil injection pipe 14. When it has completely entered the oil injection pipe 14, the rotation stops. At this time, the bearing body 17 is placed for oil injection. The grease will be supported by the baffle 21, reducing its downward movement and thus staying in the middle of the bearing body 17 to quickly contact the balls; by adding the baffle 21, the contact between the grease and the inside of the bearing body 17 can be accelerated during oil injection, thereby increasing the lubrication contact speed. At the same time, the baffle 21 can be quickly disassembled and installed for cleaning.
[0027] like Figures 2 to 5 As shown, a pair of metal rods 31 are slidably fitted inside the fixing plate 13; a protective cover 3 is fixedly connected to the bottom of the metal rods 31; a pair of magnets 32 are fixedly connected to the top of the fixing plate 13; the magnets 32 and the protective cover 3 are correspondingly arranged; during operation, after the oil filling is completed, a portion of the oil filling pipe 14 will remain at the end. At this time, the metal rods 31 are inserted into the fixing plate 13, and then the metal rods 31 will be attracted by the magnets 32, making them magnetically fixed. After being fixed, the protective cover 3 will wrap around the oil filling pipe 14, reducing the contact between the airflow and the oil filling pipe 14, thus reducing the impact on the grease; by adding the protective cover 3, the oil filling pipe 14 can be closed when not in use, thereby reducing the drying of the grease by the airflow, and at the same time reducing the contamination of the grease by substances in the airflow.
[0028] like Figures 2 to 3 As shown, a pair of fixing rods 4 are fixedly connected to the inner wall of the support base 1; a lighting lamp 41 is fixedly connected to the end of the fixing rod 4; the lighting lamp 41 is inclined; during operation, the lighting lamp 41 can be turned on when the bearing body 17 is being lubricated, and the lighting lamp 41 will illuminate the bearing body 17, thereby illuminating the lubrication status inside the bearing body 17, thus increasing the visibility during lubrication; by adding the lighting lamp 41, the lubrication status inside the bearing body 17 can be quickly determined by light illumination after lubrication, thus increasing the visibility effect.
[0029] like Figures 2 to 5As shown, a heating rod 5 is fixed to the inner wall of the protective cover 3; multiple heating rods 5 are installed on the protective cover 3; during operation, when the oil filling pipe 14 is not used for a long time, the grease inside the oil filling pipe 14 will solidify. At this time, multiple heating rods 5 can be turned on to gradually heat up the protective cover 3, thereby heating the oil filling pipe 14. During heating, the heating should be appropriate and the heating time should be controlled. When the oil can flow, the heating rods 5 can be turned off and the protective cover 3 can be removed. After removal, oil can be filled normally. By adding heating rods 5, the oil filling pipe 14 can be heated, causing the grease inside to flow quickly, thereby speeding up the preparation work for oil filling.
[0030] like Figure 5 As shown, the bottom of the protective cover 3 is provided with a collection groove 6; the collection groove 6 is located below the fixing plate 13; during operation, when the grease inside the oil injection pipe 14 is heated, some grease will drip down and then enter the collection groove 6. At this time, the collection groove 6 will collect this grease, and it can be poured out vertically after being removed; by adding the collection groove 6, the dripping oil can be gathered and its scattering can be reduced.
[0031] Working principle: When lubricating the bearing body 17, first place the bearing body 17 inside the support seat 1 so that it contacts the limiting rod 15. After contact with the limiting rod 15, place the bearing body 17 inside the limiting ring 16. After being placed inside the limiting ring 16, the bearing body 17 contacts the limiting rod 15 through the balls inside the bearing body 17. During contact, the bearing body 17 will generate friction due to the downward force when it contacts the limiting rod 15. This friction will drive the balls to rotate. During rotation, the bearing body 17 will rotate, causing it to insert the limiting rod 15 into the cavity between the balls. This quickly adjusts the position of the bearing body 17. After adjustment, the limiting rod 15 is positioned within the balls. The bearing body 17 can be positioned in this manner. After the bearing body 17 is placed, the cavity between the balls will be aligned with the position of the oil injection pipe 14. At this time, the connecting pipe 18 is connected to the gear pump to deliver lubricating grease into the oil injection pipe 14 through the connecting pipe 18. At the same time, the cylinder 11 is started, causing it to move the fixing plate 13 downward through the round rod 12. After the fixing plate 13 moves downward, multiple oil injection pipes 14 will be inserted into the bearing body 17, and grease will be injected at this time. Before placing the bearing body 17, the baffle 21 and bolt 2 are placed on the top of the limit rod 15, and then the baffle 21 is rotated to drive the bolt 2 to rotate. During the rotation, grease will continuously enter into the oil injection pipe 14. When the grease is fully injected, the lubricating grease will be injected into the oil injection pipe 14. After the tube 14 stops rotating inside, the bearing body 17 is placed in the oil filling process. The grease is supported by the baffle 21, reducing its downward movement and allowing it to quickly contact the balls in the middle of the bearing body 17. After oil filling, some grease will remain at the end of the oil filling tube 14. At this time, the metal rod 31 is inserted into the fixing plate 13, and then the metal rod 31 is attracted by the magnet 32, magnetically fixing it. After fixing, the protective cover 3 will wrap the oil filling tube 14 to reduce airflow contact with the oil filling tube 14 and thus reduce its impact on the grease. During the oil filling of the bearing body 17, the lighting lamp 41 can be turned on. When turned on, the lighting lamp 41 will illuminate the bearing body 17, allowing it to... The lubrication status inside the bearing body 17 is illuminated to enhance visibility during lubrication. When the lubrication pipe 14 is not used for a long time, the grease inside the pipe will solidify. At this time, multiple heating rods 5 can be turned on to gradually heat the protective cover 3, thereby heating the lubrication pipe 14. During heating, the heating should be appropriate and the heating time controlled. When the grease can flow, the heating rods 5 can be turned off and the protective cover 3 can be removed. After removal, lubrication can be performed normally. When the grease inside the lubrication pipe 14 is heated, some grease will drip and enter the collection tank 6. The collection tank 6 will collect this grease. After removal, it can be poured out vertically.
[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A bearing grease injector, characterized in that: The system includes a support base (1), on which a cylinder (11) is fixedly connected to the top; a round rod (12) is fixedly connected to the output end of the cylinder (11); the round rod (12) is through-mounted and slidably connected to the support base (1); a fixing plate (13) is fixedly connected to the bottom of the round rod (12); multiple oil injection pipes (14) are fixedly connected to the bottom of the fixing plate (13); multiple limiting rods (15) are fixedly connected to the middle of the support base (1); a limiting ring (16) is opened inside the support base (1); the limiting ring (16) is located outside the limiting rods (15); a bearing body (17) is slidably fitted inside the limiting ring (16); the bearing body (17) and the limiting rods (15) are slidably fitted; a connecting pipe (18) is fixedly connected to the top of the fixing plate (13); the connecting pipe (18) and the multiple fixing plates (13) are connected.
2. The bearing grease injector according to claim 1, characterized in that: The top of the limiting rod (15) is threaded with a bolt (2); the top of the bolt (2) is fixed with a baffle (21); the baffle (21) and the bearing body (17) are in sliding fit.
3. A bearing grease injector according to claim 2, characterized in that: The fixing plate (13) has a pair of metal rods (31) that slide together inside; a protective cover (3) is fixed to the bottom of the metal rods (31); a pair of magnets (32) are fixed to the top of the fixing plate (13); the magnets (32) and the protective cover (3) are arranged correspondingly.
4. A bearing grease injector according to claim 3, characterized in that: A pair of fixing rods (4) are fixed to the inner wall of the support base (1); a lighting lamp (41) is fixed to the end of the fixing rod (4); the lighting lamp (41) is inclined.
5. A bearing grease injector according to claim 4, characterized in that: A heating rod (5) is fixed to the inner wall of the protective cover (3); multiple heating rods (5) are provided on the protective cover (3).
6. A bearing grease injector according to claim 5, characterized in that: The protective cover (3) has a collection groove (6) at its bottom; the collection groove (6) is located below the fixing plate (13).