Wear-resistant gear with self-lubricating structure

Abstract

The invention discloses a wear-resistant gear with a self-lubricating structure, and belongs to the technical field of transmission gears, the wear-resistant gear comprises a gear ring, gear blocks and gear grooves, the gear blocks and the gear grooves are alternately distributed at the edge of the gear ring, a first channel perpendicular to the axis direction of the gear ring is further formed in the gear ring, and the inner end of the first channel is connected with an input mechanism; the outer end of the first channel penetrates through the outer surface of the tooth block or the tooth groove, and the lubricating medium automatically flows out from the outer end of the first channel when the gear rotates. According to the wear-resistant gear with the self-lubricating structure, the gear structure is redesigned, on the basis that the overall structural strength and the surface relative smoothness of the gear are guaranteed, the self-lubricating effect of the rotating speed of the gear under a certain condition is achieved, and the wear-resistant gear is more suitable for complex working conditions and the situation that the requirement for the working environment of the gear is strict; and meanwhile, the method can be implemented on a gear with a small diameter, the practical value is higher, and compared with a traditional means, the cost is lower.

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 purpose of the present invention is to provide a wear-resistant gear with a self-lubricating structure to solve the problem raised in the above background technology that since the working space of the gears is mostly relatively complex, the improvement scheme of the existing technology has great practical significance and reference value, but there are still certain shortcomings in the scheme of automatic lubrication of the gears themselves, and frequent maintenance and lubrication under complex working conditions will still increase the burden on the staff.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a wear-resistant gear with a self-lubricating structure, comprising a gear ring and tooth blocks and tooth grooves alternately distributed at its edge, and a first channel perpendicular to its axial direction is also opened in the gear ring, wherein the inner end of the first channel is connected to the input mechanism, and the outer end passes 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.

[0007] As a further feature, the input mechanism comprises a vertical cylinder which fits into a receiving groove, and the receiving grooves are distributed at equal angles and vertically penetrate the gear ring.

[0008] As a further feature, the top and bottom ends of the vertical cylinder are respectively connected to a ring body for detachable installation on the gear ring, wherein 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.

[0009] As a further feature, 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] As a further feature, an oil outlet pipe is provided in the vertical cylinder, an outer end of which passes through an outer wall of the vertical cylinder and flexibly fits in the first channel after the vertical cylinder is located in the accommodating groove.

[0011] Furthermore, the oil outlet pipe is connected to the balloon, which is located between the upper and lower pressure plates inside the vertical cylinder. The pressure plate is connected to a driving mechanism, which is used to drive the pressure plate to move elastically and cause the balloon to deform and extrude a certain amount of lubricating medium when the gear rotates beyond a threshold speed.

[0012] Furthermore, the driving mechanism includes a rocker arm, the end of which is rotatably mounted on the inner wall at the end of the vertical cylinder, and the roller embedded in the tail end of the rocker arm is attached to the surface of the pressure plate. At the same time, the rocker arm, which is initially inclined, is still not able to reach a vertical state after reaching the maximum rotation angle. At the same time, a one-way air return hole is installed on one of the pressure plates, and an air intake hole for one-way air intake is connected to the vertical cylinder.

[0013] As a further feature, the inner space of the vertical cylinder outside one of the two pressure plates is also connected to the air pipe.

[0014] Furthermore, the output end of the air pipe is connected to the second channel, wherein the second channel is used to spray airflow to assist in smoothing the lubricating medium and cooling the airflow. The channel is also opened in the gear ring, and the output end is located in the tooth or tooth groove.

[0015] The beneficial effects of the present invention are: the gear structure is redesigned to achieve a self-lubricating effect under certain conditions when the gear rotation speed is guaranteed while ensuring the overall structural strength and relative surface flatness of the gear. This is more suitable for complex working conditions and situations with strict requirements on the gear working environment. At the same time, it can be implemented on gears with smaller diameters, has higher practical value and lower cost than traditional means, as shown in the following content.

[0016] 1. The structural design of the receiving groove cooperates with the vertical cylinder. On the one hand, the storage effect of the receiving groove on the vertical cylinder and the detachable connection effect of the ring body and the gear ring can be used to ensure that the input mechanism composed of the vertical cylinder can be installed in the gear relatively seamlessly, ensuring the normal realization of the automatic lubrication effect and not causing too much impact on the structural strength and surface smoothness of the gear itself. On the other hand, the connection between the receiving groove and each channel can be used to enable the gear to achieve multi-channel air cooling without installing the vertical cylinder, and the effect is more significant.

[0017] 2. The structural design of the pressure plate and the swing rod enables the vertical cylinder to use the centrifugal force generated by the rotation of the gear itself to drive the swing rod to swing after assembly, thereby driving the pressure plate to move synchronously and produce a compression deformation effect on the balloon, thereby achieving a single quantitative lubrication effect for the gear in a single operation; Furthermore, the multiple one-way air circulation structures on the pressure plate cooperate with the structural design of the second channel, so that the movement of the pressure plate can not only realize automatic lubrication between the gears, but also guide the airflow through the air pressure changes caused by its displacement, thereby producing a uniform distribution of the auxiliary lubrication medium and an air cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the first channel distribution structure of the present invention; Figure 3 It is a schematic diagram of the explosion structure of the present invention; Figure 4 This is a schematic diagram of the distribution structure of the receiving grooves of the present invention; Figure 5 This is a schematic diagram of the connection structure between the ring body and the vertical cylinder of the present invention; Figure 6 This is a schematic diagram of the internal structure of the vertical tube of the present invention; Figure 7 It is a schematic diagram of the swing rod distribution structure of the present invention; Figure 8 This is a schematic diagram of the oil outlet pipe connection structure of the present invention; Fig. 9 It is a schematic diagram of the second channel connection structure of the present invention.

[0019] 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, pressure plate; 10, rocker arm; 11, air inlet hole; 12, air return hole; 13, air pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 9 , the present invention provides the following technical solutions: Embodiment 1: In this embodiment, in order to solve the problems existing in the prior art, the following is disclosed: Figure 1-5In the technical solution shown, the ring body 6 is a supporting structure of the vertical cylinder 4 device. Its primary function is to stably install the vertical cylinder 4 as an input mechanism in the gear. In view of the imperfect problem of traditional gear self-lubricating solutions, some gears in the prior art will accommodate some automatic oil supply mechanisms by excessively hollowing out the interior of the gear. However, the internal hollowing setting method will cause the internal space of the gear to occupy too much, thereby affecting the structural strength. The basis of the internal hollowing method is that the gear has a certain volume, and the gear of this type of volume has a high structural strength. Therefore, similar solutions in the prior art have the defects of strict application environment requirements and difficult implementation. The solution disclosed in this embodiment adopts a vertical opening method to connect the input mechanism to the gear in a detachable manner, including a gear ring 1 and tooth blocks and tooth grooves alternately distributed at its edge. The gear ring 1 is also provided with a first channel 2 perpendicular to its axial direction, wherein the inner end of the first channel 2 is connected to the input mechanism, and the outer end passes 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 2 when the gear rotates. The input mechanism includes a vertical cylinder 4, which fits in the receiving groove 5, and the receiving groove 5 is distributed at equal angles and vertically penetrates the gear ring 1. The top and bottom ends of the vertical cylinder 4 are respectively connected to a ring body 6 for detachable installation on the gear ring 1, wherein after the ring body 6 is embedded and fixed in the annular groove structure on the gear ring 1, its top end does not protrude from the surface of the gear ring 1, and the tail end of the first channel 2 is initially connected to the receiving groove 5, and 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, i.e., the vertical cylinder 4, is located inside the receiving groove 5, the oil outlet end of the vertical cylinder 4 will fit into the first channel 2. Therefore, the lubricating medium flowing due to the rotation of the gear 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, thereby achieving a self-lubricating 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 engages with multiple gears for work, the receiving groove 5 can also be used as an airflow channel to assist in cooling, and the use effect is better.

[0022] In this embodiment, it is further disclosed how to realize automatic lubrication according to the rotation of the gear after using the detachable vertical cylinder 4 structure as the input mechanism, as shown in the following specific example: Figure 5-Figure 8As shown, an oil outlet pipe 7 is provided in the vertical cylinder 4, the outer end of which passes through the outer wall of the vertical cylinder 4 and flexibly fits in the first channel 2 after the vertical cylinder 4 is located in the receiving groove 5. The oil outlet pipe 7 is connected to the balloon 8, which is located between the upper and lower pressure plates 9 inside the vertical cylinder 4. At the same time, the pressure plate 9 is connected to a driving mechanism, which is used to drive the pressure plate 9 to move elastically and cause the balloon 8 to deform and extrude a quantitative lubricating medium when the gear rotates beyond a threshold speed. The driving mechanism includes a swing rod 10, which 0 is rotatably mounted on the inner wall of the end of the vertical cylinder 4, and the roller embedded in the tail end of the swing rod 10 is attached to the surface of the pressure plate 9. At the same time, the swing rod 10, which is initially tilted, is still not vertical after reaching the maximum rotation angle. At the same time, a one-way air return hole 12 is installed on one of the pressure plates 9, and an air intake hole 11 for one-way air intake is connected in the vertical cylinder 4. In the initial state, the swing rod 10 is normally tilted. After the gear is in high-speed rotation and exceeds the specified threshold, the swing rod 10 will deflect toward the center of the pressure plate 9 due to its centrifugal force, and its maximum angle will not reach the position perpendicular to the pressure plate 9. In this process, the pressure plate 9 moves toward the direction close to the balloon 8, so the balloon 8 is deformed by force and extrude a certain 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 to achieve a self-lubricating effect. That is to say, in a complete rotation working time period of the gear, the balloon 8 will only be squeezed once and will not recover the deformation. The maximum speed of each rotation of the gear is relatively constant, so the lubricating medium can be squeezed out quantitatively. When the gear stops rotating, the pressure plate 9 will also move back accordingly. Therefore, the airflow in the space on the other side of one of the pressure plates 9 will pass through the one-way return hole 12 and enter the space where the balloon 8 is located. Therefore, when the pressure 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, the internal space of the vertical cylinder 4 where the input end of the return hole 12 is located should also be provided with a one-way air inlet 11.

[0023] Embodiment 2: The solution disclosed in this embodiment is an additional extended solution based on the above technical means, as shown in the following example: Figure 7-Figure 9 As shown, the internal space of the vertical cylinder 4 on the outer side of one of the two pressure plates 9 is also connected to the air pipe 13, and the output end of the air pipe 13 is connected to the second channel 3, wherein the second channel 3 is used to spray airflow to assist in smoothing the lubricating medium and cooling the airflow. The channel is also opened in the gear ring 1, and the output end is located in the tooth or tooth groove. When one of the pressure plates 9 is in the retracted state, taking the upper pressure plate 9 as an example, the space above the pressure plate 9 will be compressed accordingly and the airflow will enter the second channel 3 through the air pipe 13 and be sprayed out from the end of the second channel 3. The airflow generated in this way can, on the one hand, assist in cooling, and on the other hand, assist in evenly dispersing the lubricating medium flowing out of other gears or the gear itself.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant gear with a self-lubricating structure, comprising a gear ring (1) and tooth blocks and tooth grooves alternately distributed on its edge, characterized in that: The gear ring (1) is also provided with a first channel (2) perpendicular to its axis, wherein the inner end of the first channel (2) is connected to the input mechanism, and the outer end thereof penetrates the outer surface of the tooth block or the tooth groove, and the lubricating medium automatically flows out from the outer end of the first channel (2) when the gear rotates; The input mechanism comprises a vertical cylinder (4), the vertical cylinder (4) being fitted into a receiving groove (5), and the receiving groove (5) being arranged in the gear ring (1) at equal angles and vertically penetrating therethrough; The top and bottom ends of the vertical cylinder (4) are respectively connected to a ring body (6) for detachably mounting on the gear ring (1), wherein after the ring body (6) is embedded in and fixed in the annular groove structure on the gear ring (1), the top end of the ring body (6) does not protrude from the surface of the gear ring (1).

2. The wear-resistant gear with a self-lubricating structure according to claim 1, characterized in that: The tail end of the first channel (2) is initially connected to the receiving groove (5), and 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).

3. The wear-resistant gear with a self-lubricating structure according to claim 1, characterized in that: 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 flexibly fits in the first channel (2) after the vertical cylinder (4) is located in the accommodating groove (5).

4. The wear-resistant gear with a self-lubricating structure according to claim 3, characterized in that: The oil outlet pipe (7) is connected to the sac (8), and the sac (8) is located between two upper and lower pressure plates (9) inside the vertical cylinder (4). The pressure plate (9) is connected to a driving mechanism, and the driving mechanism is used to drive the pressure plate (9) to move elastically and cause the sac (8) to deform and extrude a quantitative lubricating medium when the gear rotates beyond a threshold speed.

5. The wear-resistant gear with a self-lubricating structure according to claim 4, characterized in that: The driving mechanism comprises a swing rod (10), the end of which is rotatably mounted on the inner wall of the end of the vertical cylinder (4), and a roller embedded in the tail end of the swing rod (10) is attached to the surface of the pressure plate (9). At the same time, the swing rod (10) which is initially tilted does not reach a vertical state after reaching a maximum rotation angle. At the same time, a one-way air return hole (12) is installed on one of the pressure plates (9), and an air intake hole (11) for one-way air intake is connected in the vertical cylinder (4).

6. The wear-resistant gear with a self-lubricating structure according to claim 4, characterized in that: The internal space of the vertical cylinder (4) outside one of the two pressing plates (9) is also connected to the air pipe (13).

7. The wear-resistant gear with a self-lubricating structure according to claim 6, characterized in that: The output end of the air pipe (13) is connected to the second channel (3), wherein the second channel (3) is used to spray air to assist in smoothing the lubricating medium and cooling the air flow. The channel is also opened in the gear ring (1), and the output end is located in the tooth or tooth groove.

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