A pull-type bearing grease discharger

Abstract

The utility model discloses a kind of bearing grease extractors of pulling type, it is used to extract and discharge waste grease stored in the inner ring hollow groove of bearing outer cover;The discharger includes grease outlet pipe, grease outlet pull rod, spring and fixed mechanism;The inside of grease outlet pipe is cavity structure, the cavity structure is used for grease outlet pull rod, spring reciprocating motion;One end of grease outlet pipe is connected with the circular grease outlet of one side of inner ring hollow groove, and its other end is connected with grease outlet pipe sealing element;One end of grease outlet pull rod is connected with one end of spring by fixed mechanism, and its other end sequentially passes through grease outlet pipe, grease outlet pipe sealing element and is fixedly connected with pull rod end head.The bearing grease discharger of pulling type is optimized by structure design, solve the problem that traditional method needs to weld, assembly complex, significantly improve the convenience and safety of operation.It is suitable for various bearing maintenance scenes by its pulling type grease discharging mode, with higher practicality and popularization value.

Description

Technical Field

[0001] This utility model relates to a pull-out bearing grease discharge device, belonging to the field of motor bearing technology. Background Technology

[0002] Existing motor bearing grease drainers require hot work processes such as cutting and welding during manufacturing. Furthermore, when installing the spring, a nut needs to be tightened onto the inner ring of the spring, but it's difficult to insert a wrench into the spring's gaps. This step is typically time-consuming, and the quality of the drainers produced is inconsistent. Moreover, the use of flame cutting increases the cost of personal protective equipment and raises the risk of accidents.

[0003] To address the problems mentioned in the background art, the existing bearing grease discharger structure is improved. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a pull-out bearing grease discharger, thereby solving the aforementioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a pull-out bearing grease discharger, which is used to extract and discharge waste grease stored in the hollow groove of the inner ring of the bearing outer cover; the discharger includes a grease discharge pipe, a grease discharge rod, a spring and a fixing mechanism;

[0006] The grease outlet tube has a hollow cavity structure inside, which is used for the reciprocating motion of the grease outlet rod and spring; one end of the grease outlet tube is connected to the circular grease outlet on one side of the inner ring hollow groove, and the other end is connected to the grease outlet tube seal;

[0007] One end of the grease-discharging rod is connected to one end of the spring via a fixing mechanism, and the other end passes through the grease-discharging tube and the grease-discharging tube seal in sequence and is fixedly connected to the end of the rod.

[0008] Furthermore, the fixing mechanism is a cylindrical structure with two locking threaded holes at its side end and a slot on the side near the spring. The spring extends into the slot of the fixing mechanism and wraps around the tail end of the grease-discharging pull rod.

[0009] A locking bolt is inserted through one of the locking threaded holes. One end of the locking bolt passes through the helical part adjacent to the tail end of the spring and abuts against one side of the tail end of the grease-discharging rod; it is used to fix the spring and the grease-discharging rod.

[0010] Another locking bolt is installed at the other locking threaded hole. One end of the locking bolt abuts against one side of the tail end of the grease discharge rod, and it is used to lock the grease discharge rod.

[0011] Furthermore, an L-shaped groove is provided at the end of the grease outlet tube away from the spring where it connects with the grease outlet tube seal; this L-shaped groove is used to securely insert and tighten the fixing screw of the grease outlet tube seal.

[0012] Furthermore, the grease outlet sealing element includes an end cap, a main body cylinder, and a fixing screw; the main body cylinder extends into the grease inlet / outlet pipe and is limited by the end cap.

[0013] Furthermore, a groove is provided on the main cylindrical part, and a rubber ring is embedded in the groove.

[0014] Furthermore, the grease discharge lever has an overall L-shaped structure, with its long rod connected to a spring, a fixing mechanism, and a grease discharge tube seal, and its short rod connected to a lever end, which is a fixed ball handle.

[0015] The beneficial effects of this utility model are:

[0016] This mechanism features a simple structure that facilitates assembly. Each component (grease outlet tube, grease outlet rod, spring, fixing mechanism, etc.) employs a modular design, eliminating the need for welding, reducing processing steps, and improving production efficiency. The spring fixing mechanism secures the spring and grease outlet rod with locking bolts, avoiding the complex operation of tightening nuts on the inner ring of the spring as in traditional methods, thus reducing assembly difficulty.

[0017] Easy to operate, no need to disassemble the bearing. By pulling the L-shaped grease discharge rod, the spring can be moved to discharge waste grease without disassembling the bearing assembly, thus improving maintenance efficiency. The grease discharge tube seal uses an L-shaped groove and a fixing screw to lock and unlock easily, making it convenient for cleaning and replacing parts.

[0018] It has good sealing performance and prevents grease leakage. The main body of the grease outlet seal is equipped with a groove and a rubber ring to effectively enhance the sealing performance and prevent waste grease from overflowing. The outer diameter of the spring is slightly smaller than the diameter of the grease outlet (2~4.5mm smaller), which ensures both sealing performance and free extension and contraction of the spring.

[0019] The all-mechanical structure eliminates welding and cutting processes, reducing fire hazards and lowering personal protective equipment costs. The fixing mechanism uses double locking bolts to ensure a secure connection between the spring and the pull rod, preventing loosening. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic front view of the structure of this utility model;

[0022] Figure 3 This utility model Figure 2 A schematic cross-sectional view of the DD structure;

[0023] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure;

[0024] Figure 5 This is an assembly drawing of the pull-out rod of this utility model;

[0025] Figure 6 For the present utility model Figure 5 A magnified view of a partial schematic.

[0026] In the diagram: 1. Bearing outer cover, 11. Inner ring hollow groove, 111. Circular grease outlet, 2. Grease outlet pipe, 21. L-shaped groove, 3. Grease outlet pull rod, 31. Pull rod end, 4. Spring, 5. Grease outlet pipe seal, 51. End cap, 52. Main body cylinder, 521. Groove, 522. Rubber ring, 53. Fixing screw, 6. Locking bolt one, 7. Locking bolt two, 8. Fixing mechanism, 81. Groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0029] like Figures 1-5 As shown, a pull-out bearing grease discharger is used to extract and discharge waste grease stored in the hollow groove 11 of the inner ring of the bearing outer cover 1; the discharger includes a grease discharge pipe 2, a grease discharge rod 3, a spring 4 and a fixing mechanism 5;

[0030] The inside of the grease outlet tube 2 is a hollow structure, which is used for the reciprocating motion of the grease outlet rod 3 and the spring 4; one end of the grease outlet tube 2 is connected to the circular grease outlet 111 on one side of the inner ring hollow groove 11, and the other end is connected to the grease outlet tube seal 5.

[0031] One end of the grease discharge rod 3 is connected to one end of the spring 4 through the fixing mechanism 8, and the other end passes through the grease discharge tube 2 and the grease discharge tube seal 5 in sequence and is fixedly connected to the end of the rod 31.

[0032] In this embodiment, the fixing mechanism 8 is a cylindrical structure with two locking threaded holes at its side end. A slot is provided on the side near the spring 4. The spring 4 extends into the slot of the fixing mechanism 8 and wraps around the tail end of the grease-discharging pull rod 3.

[0033] A locking bolt 6 is inserted through one of the locking threaded holes. One end of the locking bolt 6 passes through the helical part adjacent to the tail end of the spring 4 and abuts against one side of the tail end of the grease-discharging rod 3; it is used to fix the spring 4 and the grease-discharging rod 3.

[0034] Another locking bolt 6 is provided at the locking threaded hole. One end of the locking bolt 6 abuts against the tail end of the grease discharge rod 3 and is used to lock the grease discharge rod 3.

[0035] In this embodiment, an L-shaped groove 21 is provided at the end of the grease outlet tube 2 away from the spring 4 where it is connected to the grease outlet tube seal 5; the L-shaped groove 21 is used to fix and clamp the fixing screw 53 of the grease outlet tube seal 5.

[0036] In this embodiment, the grease outlet tube seal 5 includes an end cap 51, a main body tube 52, and a fixing screw 53; the main body tube 52 extends into the grease inlet / outlet tube 2 and is limited by the end cap 51.

[0037] In this embodiment, a groove 521 is provided on the main body cylindrical part 52, and a rubber ring 522 is embedded in the groove 521.

[0038] In this embodiment, the grease discharge rod 3 has an overall L-shaped structure. Its long rod is connected to the spring 4, the fixing mechanism 8, and the grease discharge tube seal 5, and its short rod is connected to the rod end 31, which is a fixed ball handle.

[0039] Working principle: The grease outlet tube 2 is inserted into the grease outlet 111 of the bearing outer cover 1, and the fixing screw 53 is locked into the L-shaped groove 21 to fix the sealing element 5.

[0040] Spring 4 is fixed in the slot of spring fixing mechanism 8 and connected to grease-discharging rod 3 by locking bolts 6 and 7, and the spring is in a naturally extended state.

[0041] Rotate the ball handle 31 to disengage the fixing screw 53 from the L-shaped slot 21, then pull the grease discharge rod 3 outwards. The rod causes the spring 4 to retract, creating negative pressure and discharging the waste grease accumulated inside the bearing cover 1 from the grease discharge tube 2. Release the rod, and the spring 4 returns to its elastic state, pushing the grease discharge tube seal 5 back into place. Rotate the ball handle 31 to re-engage the fixing screw 53 into the L-shaped slot 21, completing the seal and preparing for the next use.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pull-out type bearing grease discharger for discharging waste grease stored in the inner ring hollow groove (11) of a bearing outer cover (1), characterized in that, The discharge device includes a grease discharge tube (2), a grease discharge lever (3), a spring (4), and a fixing mechanism (8); The inside of the grease outlet tube (2) is a hollow structure, which is used for the reciprocating motion of the grease outlet rod (3) and the spring (4); one end of the grease outlet tube (2) is connected to the circular grease outlet (111) on one side of the inner ring hollow groove (11), and the other end is connected to the grease outlet tube seal (5). One end of the grease-discharging pull rod (3) is connected to one end of the spring (4) through the fixing mechanism (8), and the other end passes through the grease-discharging pipe (2) and the grease-discharging pipe seal (5) in sequence and is fixedly connected to the end of the pull rod (31).

2. The pull-out bearing grease discharger according to claim 1, characterized in that, The fixing mechanism (8) is a cylindrical structure with two locking threaded holes at its side end. A slot (81) is provided on the side near the spring (4). The spring (4) extends into the slot (81) of the fixing mechanism (8) and wraps around the tail end of the grease-discharging pull rod (3). A locking bolt (6) is inserted through one of the locking threaded holes, and one end of the locking bolt (6) passes through the spring (4). The adjacent spiral part at the tail end abuts against one side of the tail end of the grease-discharging rod (3); it is used to fix the spring (4) and the grease-discharging rod (3) together; Another locking bolt (7) is inserted through the locking thread hole. One end of the locking bolt (6) abuts against the tail end of the grease discharge rod (3) and is used to lock the grease discharge rod (3).

3. A pull-out bearing grease discharger according to claim 1, characterized in that, An L-shaped groove (21) is provided at the end of the grease outlet tube (2) away from the spring (4) where it connects with the grease outlet tube seal (5); the L-shaped groove (21) is used to fix and insert the fixing screw (53) of the grease outlet tube seal (5).

4. A pull-out bearing grease discharger according to claim 3, characterized in that, The grease outlet sealing element (5) includes an end cap (51), a main body cylinder (52), and a fixing screw (53); the main body cylinder (52) extends into the grease inlet / outlet pipe (2) and is limited by the end cap (51).

5. A pull-out bearing grease discharger according to claim 4, characterized in that, A groove (521) is provided on the main cylindrical part (52), and a rubber ring (522) is embedded in the groove (521).

6. A pull-out bearing grease discharger according to claim 1, characterized in that, The grease discharge lever (3) has an overall L-shaped structure. Its long rod is connected to a spring (4), a fixing mechanism (8), and a grease discharge tube seal (5). Its short rod is connected to a lever end (31), which is a fixed ball handle.

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