A wear-resistant gear with a self-lubricating structure

Abstract

The present invention discloses a wear-resistant gear provided with a self-lubricating structure, belonging to the technical field of transmission gears, which includes a tooth ring and alternately distributed tooth blocks and tooth grooves at its edge. A first channel perpendicular to the axis direction of the tooth ring is also provided in the tooth ring, wherein the inner end of the first channel is connected to an input mechanism, and the outer end penetrates the outer surface of the tooth block or tooth groove, and a lubricating medium automatically flows out from the outer end of the first channel when the gear rotates. This wear-resistant gear with a self-lubricating structure redesigns the gear structure. On the basis of ensuring the overall structural strength and surface relative flatness of the gear, it realizes the self-lubricating effect when the rotation speed of the gear reaches certain conditions, is more suitable for complex working conditions and situations with strict requirements for the gear working environment, and can be implemented on gears with a smaller diameter, with higher practical value and lower cost compared with traditional means.

Description

Technical Field

[0001] The invention relates to the technical field of transmission gears, in particular to a wear-resistant gear with a self-lubricating structure. Background Art

[0002] As an important transmission structure, gears transmit power and motion through continuous meshing. At the same time, as a high-load transmission component, they also need to be fully lubricated during operation to ensure service life and transmission efficiency. For example, in the prior art, a lubricating and heat-dissipating automobile gear with a bulletin number of CN206571938U includes a gear body, the gear body is provided with a plurality of tooth valleys, a shaft connection hole and a keyway located at the shaft connection hole, the gear is also provided with a lubricating oil cavity and a plurality of lubricating and heat-dissipating channels, the lubricating oil cavity is a notched annular structure with the shaft connection hole as the center and the keyway as the notch, the plurality of lubricating and heat-dissipating channels correspond to the plurality of tooth valleys of the gear body, the inner end of each lubricating and heat-dissipating channel is connected to the lubricating oil cavity and the outer end is connected to a corresponding tooth valley, a plurality of reinforcing rib plates are provided in the lubricating oil cavity, and the depth of the keyway is twice the distance between the inner and outer walls of the lubricating oil cavity. The utility model can efficiently ensure the lubrication of the gear meshing surface, can reduce the heat generated by the mechanical contact of the meshing surface, and can send out the internal heat of the gear in the process of conveying the lubricating oil, so as to play a better heat dissipation role.

[0003] Another example is the high-efficiency lubricating gear with announcement number CN221723360U in the prior art, which belongs to the field of gear technology and includes two toothed discs and a connecting disc fixedly connected between the two toothed discs. The toothed disc is annularly formed with a plurality of teeth, and a lubrication port is provided on the side of the teeth facing the connecting disc. The other end of the lubrication port is opened on the side of the teeth away from the rotation direction of the gear. The diameter of the lubrication port gradually decreases as it approaches the space between two adjacent teeth. The connecting disc is provided with a guide to guide the lubricating oil to flow toward the connecting port. The high-efficiency lubricating gear of the utility model increases the lubricating oil at the teeth and improves the lubrication effect of the gear.

[0004] Although the above-mentioned prior art discloses a lubrication solution for gears, since the working space of gears is mostly relatively complex, the improvement solution of the prior art has great practical significance and reference value, but there are still certain shortcomings in the solution for automatic lubrication of the gears themselves. Frequent maintenance and lubrication under complex working conditions will still increase the burden on the staff. Summary of the invention

[0005] The object of the present invention is to provide a wear-resistant gear provided with a self-lubricating structure, so as to solve the problem proposed in the above background technology that since the working space of the gear is mostly relatively complex, although the improvement solutions of the prior art have good practical significance and reference value, there are still certain deficiencies in the self-lubricating solutions of the gear itself, and the frequent maintenance and lubrication under complex working conditions will still increase the burden on the staff.

[0006] To achieve the above object, the present invention provides the following technical solution: A wear-resistant gear provided with a self-lubricating structure, including a tooth ring and alternately distributed tooth blocks and tooth grooves at its edge, and a first channel is also opened in the tooth ring in the direction perpendicular to its axis, wherein the inner end of the first channel is connected to the input mechanism, and the outer end penetrates through the outer surface of the tooth block or tooth groove and automatically discharges the lubricating medium from the outer end of the first channel when the gear rotates.

[0007] Furthermore, the input mechanism includes a vertical cylinder, which fits in the receiving groove, and the receiving grooves are equally angularly distributed and vertically penetrate and are opened in the tooth ring.

[0008] Furthermore, the top and bottom ends of the vertical cylinder are respectively connected to a ring body for detachably mounting on the tooth ring. After the ring body is embedded and fixed in the annular groove structure on the tooth ring, its top end does not protrude from the tooth ring surface.

[0009] Furthermore, the tail end of the first channel is initially connected to the receiving groove, and after the vertical cylinder is installed in the receiving groove, the tail end of the first channel is connected to the flexible oil outlet end in the vertical cylinder.

[0010] Furthermore, an oil outlet pipe is arranged in the vertical cylinder, the outer end of the oil outlet pipe passes through the outer wall of the vertical cylinder, and after the vertical cylinder is located in the receiving groove, it flexibly fits in the first channel.

[0011] Furthermore, the oil outlet pipe is connected to a balloon, the balloon is located between two pressing plates inside the vertical cylinder, and at the same time the pressing plates are connected to a driving mechanism, which is used to drive the pressing plates to elastically move and cause the balloon to deform and extrude a fixed amount of lubricating medium when the gear rotates beyond the threshold speed.

[0012] Furthermore, the driving mechanism includes a swing rod, the end of the swing rod is rotatably installed on the inner wall of the end of the vertical cylinder, and the roller embedded at the tail end of the swing rod is attached to the surface of the pressing plate. At the same time, the swing rod initially distributed obliquely still does not reach the vertical state after reaching the maximum rotation angle. At the same time, a one-way flow return air hole is installed on one of the pressing plates, and an air inlet hole for one-way air intake is connected in the vertical cylinder.

[0013] Furthermore, the inner space of the vertical cylinder outside one of the two pressing plates is also connected to an air pipe.

[0014] As a further aspect, the output end of the trachea is connected to the second channel, where the second channel is used to eject air flow to assist in smoothing the lubricating medium and cooling the air flow. This channel is also opened in the gear ring, and the output end is located in the teeth or tooth grooves.

[0015] The beneficial effects of the present invention are as follows: By redesigning the gear structure, on the basis of ensuring the overall structural strength and relative surface flatness of the gear, the self-lubricating effect is achieved when the rotational speed of the gear reaches a certain condition, which is more suitable for complex working conditions and situations with strict requirements for the gear working environment. At the same time, it can be implemented on gears with a smaller diameter, with higher practical value and lower cost compared to traditional means, as shown in the following content.

[0016] 1. The structural design of the accommodation groove cooperating with the vertical cylinder can, on the one hand, utilize the accommodation effect of the accommodation groove on the vertical cylinder and the detachable connection effect of the ring body and the gear ring to ensure that the input mechanism composed of the vertical cylinder can be relatively seamlessly installed into the gear, ensuring the normal realization of the automatic lubrication effect and not causing too much impact on the structural strength and surface flatness of the gear itself. On the other hand, it can utilize the connection between the accommodation groove and each channel to enable the gear to achieve multi-channel air cooling when the vertical cylinder is not assembled, and the effect is more significant.

[0017] 2. The structural design of the pressing plate and the swing rod enables, after the vertical cylinder is assembled, the swing rod to be driven by the centrifugal force generated by the rotation of the gear itself, thereby driving the pressing plate to move synchronously and generating a compressive deformation effect on the balloon, and further realizing the single-dose quantitative lubrication effect of the gear for a single operation;

[0018] Furthermore, the structural design of multiple one-way air circulation structures on the pressing plate cooperating with the second channel enables the movement of the pressing plate not only to achieve automatic lubrication between the gears, but also to guide the air flow through the air pressure change caused by its displacement, thereby generating the effects of uniform distribution of the auxiliary lubricating medium and air cooling. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a schematic diagram of the distribution structure of the first channel of the present invention;

[0021] Figure 3 It is an exploded schematic diagram of the present invention;

[0022] Figure 4 It is a schematic diagram of the distribution structure of the accommodation groove of the present invention;

[0023] Figure 5 It is a schematic diagram of the connection structure between the ring body and the vertical cylinder of the present invention;

[0024] Figure 6 Schematic diagram of the internal structure of the vertical cylinder of the present invention;

[0025] Figure 7 Schematic diagram of the distribution structure of the swing rod of the present invention;

[0026] Figure 8 Schematic diagram of the connection structure of the oil outlet pipe of the present invention;

[0027] Figure 9 Schematic diagram of the connection structure of the second channel of the present invention.

[0028] In the figure: 1, gear ring; 2, first channel; 3, second channel; 4, vertical cylinder; 5, receiving groove; 6, ring body; 7, oil outlet pipe; 8, balloon; 9, pressing plate; 10, swing rod; 11, air inlet hole; 12, air return hole; 13, air pipe. Specific embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-9 , the present invention provides the following technical solutions:

[0031] Embodiment 1: In this embodiment, in order to solve the problems existing in the prior art, it is disclosed as Figures 1-5In the technical solution shown, the ring body 6 is a supporting structure for the vertical cylinder 4 device. Its primary function is to stably install the vertical cylinder 4 as an input mechanism in the gear. Aiming at the problem of the imperfect self-lubrication scheme of traditional gears, some gears in the prior art will accommodate some automatic oil supply mechanisms by excessively hollowing out the inside of the gear. However, the internal hollowing setting method will cause excessive occupation of the internal space of the gear, thus affecting the structural strength. And the basis of the internal hollowing method is that the gear has a certain volume, and this type of gear with such a volume has relatively high structural strength. Therefore, similar solutions in the prior art all have the defect of being difficult to implement due to the strict application environment requirements. The solution disclosed in this embodiment is to adopt the method of vertical opening and connect the input mechanism to the gear in a detachable manner. It includes a tooth ring 1 and alternately distributed tooth blocks and tooth grooves at its edge. A first channel 2 perpendicular to the axis direction of the tooth ring 1 is also opened in the tooth ring 1. The inner end of the first channel 2 is connected to the input mechanism, and the outer end penetrates through the outer surface of the tooth block or tooth groove. When the gear rotates, the lubricating medium automatically flows out from the outer end of the first channel 2. The input mechanism includes a vertical cylinder 4, which fits in the receiving groove 5. The receiving grooves 5 are equally angularly distributed and vertically penetrate and are opened in the tooth ring 1. The top and bottom ends of the vertical cylinder 4 are respectively connected to a ring body 6 for detachably installing on the tooth ring 1. After the ring body 6 is inlaid and fixed in the annular groove structure on the tooth ring 1, its top does not protrude from the surface of the tooth ring 1. The tail end of the first channel 2 is initially connected to the receiving groove 5. After the vertical cylinder 4 is installed in the receiving groove 5, the tail end of the first channel 2 is connected to the flexible oil outlet end in the vertical cylinder 4. When the input mechanism, that is, the vertical cylinder 4, is inside the receiving groove 5, the oil outlet end on the vertical cylinder 4 will fit into the first channel 2. Therefore, the lubricating medium flowing due to gear rotation or other influencing effects will enter the corresponding channel through the vertical cylinder 4 and flow out from the outer end of the first channel 2, thus achieving the self-lubrication effect. At the same time, the vertical cylinder 4 can also be removed from the gear. At this time, multiple channels are connected to the receiving groove 5. Therefore, when the gear axially meshes and contacts with multiple gears during operation, the receiving groove 5 can also be used as an air flow channel to assist in cooling, and the use effect is better.

[0032] In this embodiment, it further discloses how to still achieve the automatic lubrication according to the rotation of the gear after adopting the separable vertical cylinder 4 structure as the input mechanism. Specifically, as Figures 5-8As shown, an oil outlet pipe 7 is arranged in the vertical cylinder 4. The outer end of the oil outlet pipe 7 passes through the outer wall of the vertical cylinder 4 and is flexibly fitted in the first channel 2 after the vertical cylinder 4 is located in the receiving groove 5. The oil outlet pipe 7 is communicated with the balloon 8. The balloon 8 is located between two pressing plates 9 above and below inside the vertical cylinder 4. At the same time, the pressing plates 9 are connected to a driving mechanism. The driving mechanism is used to drive the pressing plates 9 to elastically move and cause the balloon 8 to deform and extrude a fixed amount of lubricating medium when the gear rotates beyond the threshold speed. The driving mechanism includes a swing rod 10. The end of the swing rod 10 is rotatably installed on the inner wall of the end of the vertical cylinder 4, and the roller embedded at the tail end of the swing rod 10 is attached to the surface of the pressing plate 9. At the same time, the swing rod 10, which is initially inclined, still does not reach the vertical state after reaching the maximum rotation angle. At the same time, a one-way flow air return hole 12 is installed on one of the pressing plates 9, and an air inlet hole 11 for one-way air intake is communicated in the vertical cylinder 4. In the initial state, the swing rod 10 is normally inclined. When the gear rotates at a high speed and exceeds the defined threshold, the swing rod 10 will deflect towards the center of the pressing plate 9 due to its centrifugal force, and its maximum angle will not reach the position perpendicular to the pressing plate 9. During this process, the pressing plate 9 moves towards the balloon 8. Therefore, the balloon 8 is deformed by force and extrudes a fixed amount of lubricating medium, which enters the first channel 2 through the oil outlet pipe 7 and finally reaches the teeth or tooth grooves of the gear, achieving the effect of self-lubrication. That is to say, within a complete rotation working period of the gear, the balloon 8 will only be squeezed once and will not recover its deformation. The maximum rotation speed of the gear each time is relatively constant. Therefore, a fixed amount of lubricating medium can be extruded. When the gear stops rotating, the pressing plate 9 will also move back accordingly. Therefore, the air flow in the space on the other side of one of the pressing plates 9 will pass through the one-way air return hole 12 and enter the space where the balloon 8 is located. Therefore, when the pressing plate 9 moves next time, it will continue to deform and squeeze the balloon 8 by squeezing the space where the balloon 8 is located. At the same time, a one-way air inlet hole 11 should also be set in the inner space of the vertical cylinder 4 where the input end of the air return hole 12 is located.

[0033] Embodiment 2: The solution disclosed in this embodiment is an additional extended solution based on the above technical means, specifically as Figures 7-9 As shown, the inner space of the vertical cylinder 4 outside one of the two pressing plates 9 is also communicated with an air pipe 13. The output end of the air pipe 13 is communicated with the second channel 3. The second channel 3 is used to spray air flow to assist in smoothing the lubricating medium and cooling the air flow. This channel is also opened in the gear ring 1, and the output end is located in the teeth or tooth grooves. When one of the pressing plates 9 is in the retracted state, taking the upper pressing plate 9 as an example, the space above the pressing plate 9 will be correspondingly compressed and the air flow will enter the second channel 3 through the air pipe 13 and be sprayed out from the end of the second channel 3. The air flow generated in this way can, on the one hand, achieve the effect of assisting in cooling, and on the other hand, can assist in evenly dispersing the lubricating medium flowing out of other gears or this gear.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant gear provided with a self-lubricating structure, comprising a tooth ring and alternately distributed tooth blocks and tooth grooves at its edge, characterized in that: A first channel is also provided in the gear ring in a direction perpendicular to its axis. The inner end of the first channel is connected to the input mechanism, and the outer end penetrates through the outer surface of the tooth block or tooth groove, and the lubricating medium automatically flows out from the outer end of the first channel when the gear rotates. The input mechanism includes a vertical cylinder, which fits into the receiving groove. The receiving grooves are equally angularly distributed and vertically penetrate through the gear ring. The top and bottom ends of the vertical cylinder are respectively connected to a ring body for detachably mounting on the gear ring. After the ring body is embedded and fixed in the annular groove structure on the gear ring, its top end does not protrude from the surface of the gear ring. An oil outlet pipe is arranged in the vertical cylinder. The oil outlet pipe is communicated with the balloon. The balloon is located between two pressing plates inside the vertical cylinder. At the same time, the pressing plates are connected to the driving mechanism, which is used to drive the pressing plates to elastically move and cause the balloon to deform to extrude a fixed amount of lubricating medium when the gear rotates beyond the threshold speed. The driving mechanism includes a swing rod. The end of the swing rod is rotatably installed on the inner wall of the end of the vertical cylinder. The roller embedded at the tail end of the swing rod fits on the surface of the pressing plate. At the same time, the swing rod, which is initially inclined, still does not reach the vertical state after reaching the maximum rotation angle. At the same time, a one-way flow return air hole is installed on one of the pressing plates, and an air inlet hole for one-way air intake is communicated in the vertical cylinder. The inner space of the vertical cylinder outside one of the two pressing plates is also communicated with an air pipe. The output end of the air pipe is communicated with the second channel. The second channel is used to spray out air flow to assist in smoothing the lubricating medium and for air flow cooling. This channel is also provided in the gear ring, and the output end is located in the tooth or tooth groove.

2. The wear-resistant gear with a self-lubricating structure according to claim 1, characterized in that: The tail end of the first channel is initially communicated with the receiving groove. After the vertical cylinder is installed in the receiving groove, the tail end of the first channel is communicated with the flexible oil outlet end in the vertical cylinder.

3. A wear-resistant gear with a self-lubricating structure according to claim 1, characterized in that: The outer end of the oil outlet pipe passes through the outer wall of the vertical cylinder and flexibly fits into the first channel after the vertical cylinder is located in the receiving groove.

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