Novel gear coupling

Abstract

The utility model relates to the technical field of couplings, and provides a novel gear coupling which comprises two outer gear sleeves which are symmetrically arranged, the two outer gear sleeves are detachably and fixedly connected through a fastener, the outer wall of the outer gear sleeve on one side is provided with an anti-loosening assembly for preventing the fastener from loosening, and the outer wall of the outer gear sleeve is provided with an oil filling hole; the two shaft sleeves are located in the corresponding outer gear sleeves and are coaxial with the outer gear sleeves, outer gear rings are fixed to the outer walls of the shaft sleeves, and the outer gear rings are meshed with the teeth on the inner walls of the outer gear sleeves; the first sealing piston is fixed to the ends, away from each other, of the two outer gear sleeves, and the shaft sleeve penetrates through the first sealing piston in a sliding mode; by means of the technical scheme, the problems that in the prior art, a gear coupler is often subjected to oil injection lubrication through an oil filling hole, but due to the fact that the gap between the inner teeth and the outer teeth is small, only a small part of grease can enter the meshing portion of the inner teeth and the outer teeth, and the lubricating effect is reduced are solved.

Description

Technical Field

[0001] This utility model relates to the field of coupling technology, specifically to a novel gear coupling. Background Technology

[0002] Gear couplings are a very common type of coupling that transmits torque and power through the meshing of gears. They can connect two shafts to transmit torque and rotational motion. They are characterized by large transmission torque and high precision, and are therefore widely used in fields such as engineering machinery and metallurgical equipment.

[0003] A search revealed an existing patent (publication number: CN218670272U) disclosing a crane gear coupling, comprising an inner shaft, an outer gear ring coaxially fixed on the inner shaft, a ring of external teeth fixed around the outer wall of the outer gear ring, an inner gear ring sleeve fitted on the outer gear ring, and a ring of internal teeth fixed around the inner wall of the inner gear ring sleeve, the internal teeth meshing with the external teeth. A six-hole flange is coaxially fixed to the outer wall of one end of the inner gear ring sleeve, and a Q345B steel skeleton oil seal bracket, a retaining ring, and a retaining spring are respectively engaged from the inside out on the inner wall of the other end, wherein the skeleton oil seal bracket and the retaining ring are also coaxially slidably fitted on the inner shaft. A skeleton oil seal is coaxially embedded in the side of the skeleton oil seal bracket away from the outer gear ring, and the skeleton oil seal is coaxially slidably fitted on the inner shaft. Among them, the skeleton oil seal bracket and the inner wall of the inner toothed ring, as well as the skeleton oil seal and the skeleton oil seal bracket, are all interference fits. The skeleton oil seal is flush-embedded into the skeleton oil seal bracket, and the exposed top surfaces of the skeleton oil seal and the skeleton oil seal bracket are on the same plane.

[0004] However, the above-mentioned solution has poor lubrication. Existing gear couplings are often lubricated by adding oil through the oiling hole. However, due to the small gap between the internal and external teeth, only a small amount of grease can enter the meshing part of the internal and external teeth, thus reducing its lubrication effect. Utility Model Content

[0005] This utility model proposes a novel gear coupling that solves the problem in the related technology that existing gear couplings often require oil lubrication through the oil filling hole, but due to the small gap between the internal and external teeth, only a small amount of grease can enter the meshing part of the internal and external teeth, thus reducing its lubrication effect.

[0006] The technical solution of this utility model is as follows:

[0007] A novel gear coupling includes:

[0008] Two symmetrically arranged outer toothed sleeves are detachably and fixedly connected by fasteners. One outer toothed sleeve is equipped with an anti-loosening component to prevent the fasteners from loosening on its outer wall. The outer wall of the outer toothed sleeve is provided with an oiling hole.

[0009] Two bushings are located inside the corresponding outer gear sleeve and are coaxially arranged with the outer gear sleeve. An outer gear ring is fixed on the outer wall of the bushing, and the outer gear ring meshes with the teeth on the inner wall of the outer gear sleeve.

[0010] A first sealing piston is fixed at one end of two external toothed sleeves that are far apart from each other, and the bushing slides through the first sealing piston.

[0011] The second sealing piston is fixed at one end of two external toothed sleeves that are close to each other, and the bushing slides through the second sealing piston.

[0012] Oil guide platform No. 1 is fixed on the inner wall of the outer gear sleeve and is located between the outer gear ring and the No. 1 sealing piston.

[0013] The No. 2 oil guide platform is fixed on the inner wall of the outer gear sleeve. The No. 2 oil guide platform is located between the outer gear ring and the No. 2 sealing piston. The No. 2 oil guide platform has a through hole that mates with the oil filling hole.

[0014] Preferably, the fasteners are bolts and nuts, and the outer wall of one side of the outer toothed sleeve has a hexagonal groove that mates with the bolt head.

[0015] Preferably, the cross-sections of the No. 1 oil guide platform and the No. 2 oil guide platform are trapezoidal.

[0016] Preferably, the anti-loosening component includes a mounting block, the side wall of the mounting block is fixed to the anti-loosening block, one end of the mounting block is fixed with a slider, the side wall of the corresponding outer toothed sleeve is provided with a sliding groove that cooperates with the slider, and a threaded knob is screwed onto the mounting block, one end of the threaded knob is screwed through the mounting block and the slider and abuts against the inner wall of the sliding groove.

[0017] Preferably, the inner wall of the anti-loosening block matches the outer wall of the nut, and the inner wall of the anti-loosening block is provided with anti-slip texture.

[0018] Preferably, the slider is slidably mounted in the groove, and the cross-section of the slider and the groove is convex.

[0019] Preferably, the inner wall of the bushing is provided with a shaft groove, and the cross-section of the shaft groove is convex.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. The No. 1 sealing piston and the No. 2 sealing piston in this utility model achieve a sealed installation between the outer gear sleeve and the shaft sleeve, and at the same time form an oil storage cavity between the outer gear sleeve and the shaft sleeve. The oil filling hole is used to inject lubricating oil into the oil storage cavity formed by the outer gear sleeve and the shaft sleeve. The No. 1 oil guide platform and the No. 2 oil guide platform are arranged in a trapezoidal shape, so the lubricating oil can be more concentrated and conveniently flow to the teeth between the outer gear ring and the inner wall of the outer gear sleeve, so as to achieve efficient lubrication of both.

[0022] 2. In this utility model, the anti-loosening component, in conjunction with the hexagonal groove, can fix the fastener, thereby preventing the fastener from loosening after long-term use, ensuring the firm and stable installation of the outer toothed sleeves on both sides, and improving its practicality. Attached Figure Description

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 This is a perspective view of the external structure on the right side of this utility model;

[0025] Figure 2 This is a perspective view of the external structure on the left side of this utility model;

[0026] Figure 3 This is a perspective view of the internal structure of the outer toothed sleeve of this utility model;

[0027] Figure 4 This is a perspective view of the external structure of the outer toothed sleeve of this utility model;

[0028] Figure 5 This is a partially enlarged structural diagram of the anti-loosening component of this utility model.

[0029] In the diagram: 1. External gear sleeve; 2. Fastener; 3. Bushing; 4. External gear ring; 5. No. 1 sealing piston; 6. No. 2 sealing piston; 7. No. 1 oil guide platform; 8. No. 2 oil guide platform; 9. Oil filling hole; 10. Hexagonal groove; 11. Anti-loosening component; 111. Mounting block; 112. Anti-loosening block; 113. Slider; 114. Slide groove; 115. Threaded knob; 116. Anti-slip texture; 12. Shaft groove. Detailed Implementation

[0030] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0031] Example 1

[0032] like Figures 1-4 As shown, this embodiment proposes:

[0033] A novel gear coupling includes:

[0034] Two symmetrically arranged outer toothed sleeves 1 are detachably and fixedly connected by fasteners 2. One outer toothed sleeve 1 is provided with an anti-loosening component 11 to prevent the fasteners 2 from loosening on its outer wall. An oiling hole 9 is provided on the outer wall of the outer toothed sleeve 1.

[0035] Two bushings 3 are located inside the corresponding outer gear sleeve 1 and are coaxially arranged with the outer gear sleeve 1. An outer gear ring 4 is fixed on the outer wall of the bushing 3, and the outer gear ring 4 meshes with the teeth on the inner wall of the outer gear sleeve 1.

[0036] The first sealing piston 5 is fixed at one end of the two outer toothed sleeves 1 that are far apart from each other, and the bushing 3 slides through the first sealing piston 5.

[0037] The second sealing piston 6 is fixed at one end of the two outer toothed sleeves 1 that are close to each other, and the bushing 3 slides through the second sealing piston 6.

[0038] Oil guide platform 7 is fixed on the inner wall of outer gear sleeve 1. Oil guide platform 7 is located between outer gear ring 4 and sealing piston 5.

[0039] The No. 2 oil guide platform 8 is fixed on the inner wall of the outer gear sleeve 1. The No. 2 oil guide platform 8 is located between the outer gear ring 4 and the No. 2 sealing piston 6. The No. 2 oil guide platform 8 has a through hole that matches the oil filling hole 9.

[0040] The cross-sections of oil guide platform 7 (No. 1) and oil guide platform 8 (No. 2) are trapezoidal.

[0041] The inner wall of the bushing 3 is provided with a shaft groove 12, and the cross section of the shaft groove 12 is convex.

[0042] In this embodiment, the No. 1 sealing piston 5 and the No. 2 sealing piston 6 are configured to achieve a sealed installation between the outer gear sleeve 1 and the bushing 3, and at the same time form an oil storage cavity between the outer gear sleeve 1 and the bushing 3. The oil filling hole 9 is used to inject lubricating oil into the oil storage cavity formed by the outer gear sleeve 1 and the bushing 3. The No. 1 oil guide platform 7 and the No. 2 oil guide platform 8 are arranged in a trapezoidal shape, so the lubricating oil can be more concentrated and conveniently flow to the teeth between the outer gear ring 4 and the inner wall of the outer gear sleeve 1, so as to achieve efficient lubrication of both.

[0043] Example 2

[0044] like Figure 5 As shown, based on the same concept as Embodiment 1 above, this embodiment also proposes:

[0045] The anti-loosening component 11 includes a mounting block 111, the side wall of which is fixed to the anti-loosening block 112. A slider 113 is fixed to one end of the mounting block 111. A groove 114 that mates with the slider 113 is provided on the side wall of the corresponding outer toothed sleeve 1. A threaded knob 115 is screwed onto the mounting block 111. One end of the threaded knob 115 is screwed through the mounting block 111 and the slider 113 and abuts against the inner wall of the groove 114.

[0046] The inner wall of the anti-loosening block 112 matches the outer wall of the nut, and the inner wall of the anti-loosening block 112 is provided with anti-slip texture 116.

[0047] The slider 113 is slidably installed in the slide groove 114, and the cross sections of the slider 113 and the slide groove 114 are convex.

[0048] Fastener 2 consists of bolts and nuts, and the outer wall of one side of the outer toothed sleeve 1 has a hexagonal groove 10 that mates with the bolt head.

[0049] In this embodiment, the anti-loosening component 11, in conjunction with the hexagonal groove 10, can fix the fastener 2, thereby preventing the fastener 2 from loosening after prolonged use. When using the anti-loosening component 11, the position of the anti-loosening block 112 is adjusted via the threaded knob 115. When it is necessary to lock the anti-loosening block 112 outside the nut, the threaded knob 115 is rotated, causing it to disengage from the inner wall of the slide groove 114. At this time, the slider 113 can slide normally, pushing the mounting block 111 to move, causing the anti-loosening block 112 to lock outside the nut. Then, the threaded knob 115 is rotated in the opposite direction to fix the position of the slider 113, thus fixing the position of the anti-loosening block 112 and effectively preventing the fastener 2 from loosening.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A novel gear coupling, characterized in that, include: Two symmetrically arranged outer toothed sleeves (1) are detachably and fixedly connected by fasteners (2). The outer wall of one side of the outer toothed sleeve (1) is equipped with an anti-loosening component (11) to prevent the fasteners (2) from loosening. The outer wall of the outer toothed sleeve (1) is provided with an oiling hole (9). Two bushings (3) are located inside the corresponding outer gear sleeve (1) and are coaxially arranged with the outer gear sleeve (1). An outer gear ring (4) is fixed on the outer wall of the bushing (3), and the outer gear ring (4) meshes with the teeth on the inner wall of the outer gear sleeve (1). A first sealing piston (5) is fixed at one end of two external toothed sleeves (1) that are far apart from each other, and the bushing (3) slides through the first sealing piston (5). The second sealing piston (6) is fixed at one end of the two outer toothed sleeves (1) that are close to each other, and the bushing (3) slides through the second sealing piston (6). Oil guide platform (7) No. 1 is fixed on the inner wall of the outer tooth sleeve (1) and is located between the outer tooth ring (4) and the sealing piston (5). The second oil guide platform (8) is fixed on the inner wall of the outer gear sleeve (1). The second oil guide platform (8) is located between the outer gear ring (4) and the second sealing piston (6). The second oil guide platform (8) has a through hole that matches the oil filling hole (9).

2. The novel gear coupling according to claim 1, characterized in that, The fastener (2) is a bolt and a nut, and the outer wall of the outer toothed sleeve (1) on one side is provided with a hexagonal groove (10) that mates with the bolt head.

3. The novel gear coupling according to claim 1, characterized in that, The cross-sections of the No. 1 oil guide platform (7) and the No. 2 oil guide platform (8) are trapezoidal.

4. A novel gear coupling according to claim 2, characterized in that, The anti-loosening component (11) includes a mounting block (111), the side wall of the mounting block (111) is fixed to the anti-loosening block (112), a slider (113) is fixed to one end of the mounting block (111), and a groove (114) that cooperates with the slider (113) is opened on the side wall of the corresponding outer toothed sleeve (1). A threaded knob (115) is screwed onto the mounting block (111), and one end of the threaded knob (115) is screwed through the mounting block (111) and the slider (113) and abuts against the inner wall of the groove (114).

5. A novel gear coupling according to claim 4, characterized in that, The inner wall of the anti-loosening block (112) matches the outer wall of the nut, and the inner wall of the anti-loosening block (112) is provided with anti-slip texture (116).

6. A novel gear coupling according to claim 4, characterized in that, The slider (113) is slidably installed in the groove (114), and the cross-sections of the slider (113) and the groove (114) are convex.

7. A novel gear coupling according to claim 1, characterized in that, The inner wall of the bushing (3) is provided with a shaft groove (12), and the cross section of the shaft groove (12) is convex.

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