Wear-resistant powder metallurgy gear

Abstract

The utility model provides a wear-resistant powder metallurgy gear. The wear-resistant powder metallurgy gear comprises a gear body, an annular groove is formed in the inner edge of the gear body, a first semi-annular plate and a second semi-annular plate are fixedly mounted in the groove and provided with an oil containing cavity and a cavity respectively, a bearing mounting hole is formed in the center of the gear body, and a bearing is fixedly mounted in the bearing mounting hole; symmetrical conveying pipes are fixedly connected to the inner side of the first semi-ring plate, one ends of the symmetrical conveying pipes penetrate through the protruding part to communicate with the interior of the bearing, a plurality of suction hole columns are fixedly installed on the inner side of the second semi-ring plate, through pipes communicating with the cavity are arranged at the outer teeth, and fans are fixedly installed in the through pipes. The arranged conveying pipe can guide lubricating oil in the oil containing cavity into the bearing under the centrifugal force effect of gear rotation, and after the arranged draught fan is started, metal chippings generated during gear drilling can be extracted out.

Description

Technical Field

[0001] This utility model relates to the field of gears, and more particularly to a wear-resistant powder metallurgy gear. Background Technology

[0002] Powder metallurgy gears are gears manufactured using powder pressing and sintering technology. They are characterized by low or no chip production and can achieve high dimensional accuracy, especially in tooth profile, through a single forming and finishing process. This significantly reduces material waste and the need for post-processing in powder metallurgy gear manufacturing.

[0003] In the current powder metallurgy gears, when the bearings inside need lubrication during operation, the gears often need to be manually removed and lubricated, which is time-consuming and labor-intensive. In addition, when drilling, the surface of the metallurgical gears will be covered with a large amount of metal debris, which also needs to be cleaned manually, resulting in low cleaning efficiency.

[0004] Therefore, it is necessary to provide a new wear-resistant powder metallurgy gear to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a wear-resistant powder metallurgy gear that is easy to hang clothes and saves time and effort in operation.

[0006] The wear-resistant powder metallurgy gear provided by this utility model includes: a gear body, an annular groove formed at the inner edge of the gear body, a first half-ring plate and a second half-ring plate fixedly installed in the annular groove, an oil-containing cavity and a cavity respectively formed inside the first half-ring plate and the second half-ring plate, a protrusion fixedly installed at the center of the gear body, a bearing mounting hole formed through the center of the protrusion, a bearing fixedly installed in the bearing mounting hole, symmetrical conveying pipes fixedly connected to the inner side of the first half-ring plate, one end of the symmetrical conveying pipes passing through the protrusion and communicating with the inside of the bearing, and a plurality of suction hole columns fixedly installed on the inner side of the second half-ring plate.

[0007] Preferably, a wear-resistant mounting sleeve is fixedly provided on the surface of the gear body, and the wear-resistant mounting sleeve is in contact with the outer teeth of the gear body.

[0008] Preferably, the gear body has several weight-reducing drill holes drilled through its front side.

[0009] Preferably, the surface of the gear body is carburized.

[0010] Preferably, the outer tooth surface of the gear body is provided with a threaded oil delivery hole that communicates with the oil cavity, and a sealing bolt is installed in the threaded oil delivery hole.

[0011] Preferably, the outer wall of the bearing has symmetrical oil passage holes, which are connected to one end of the symmetrical conveying pipe.

[0012] Preferably, a through pipe is installed through and fixedly mounted on the outer tooth surface of the gear body, one end of the through pipe is connected to the cavity, and a fan is fixedly installed on the inner wall of the through pipe.

[0013] Compared with related technologies, the wear-resistant powder metallurgy gear provided by this utility model has the following beneficial effects:

[0014] 1. The lubricating oil in the oil-containing cavity opened in the first semi-ring plate of this utility model will be input into the bearing through the oil passage holes on both sides through the symmetrical conveying pipes on both sides for lubrication under the action of the centrifugal force of the gear rotation, thereby avoiding the time-consuming and laborious process of manually lubricating the bearing by removing the gear.

[0015] 2. When the fan inside the through pipe of this utility model is started, it forms a suction airflow. When the gear is drilling and metal chips are generated, one end of the several suction holes will draw the metal chips into the cavity and finally discharge them from one end of the through pipe, thereby cleaning up the chips quickly and efficiently. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the wear-resistant powder metallurgy gear provided by this utility model;

[0017] Figure 2 for Figure 1 Partial structural breakdown diagram of the structural schematic;

[0018] Figure 3 for Figure 1 Analytical diagram of bearing structure shown in the schematic diagram;

[0019] Figure 4 for Figure 1 A cross-sectional view of the inside of the through-pipe in the structural schematic diagram.

[0020] The following are the labels in the diagram: 1. Gear body; 2. Wear-resistant mounting sleeve; 3. Weight-reducing drill hole; 4. Threaded oil delivery hole; 5. Sealing bolt; 6. Bearing mounting hole; 7. Bearing; 8. Annular groove; 9. First half-ring plate; 10. Second half-ring plate; 11. Suction hole column; 12. Delivery pipe; 13. Oil passage hole; 14. Passing pipe; 15. Fan; 16. Protrusion. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0022] Please refer to Figures 1 to 2 ,in, Figure 1A schematic diagram of a preferred embodiment of the wear-resistant powder metallurgy gear provided by this utility model; Figure 2 for Figure 1 Partial structural breakdown diagram of the structural schematic; Figure 3 for Figure 1 Analytical diagram of bearing structure shown in the schematic diagram; Figure 4 for Figure 1 A cross-sectional view of the inside of the through-pipe in the structural schematic diagram.

[0023] In the specific implementation process, such as Figure 1 and Figure 2 and Figure 4 As shown, the gear body 1 has an annular groove 8 at its inner edge. A first semi-annular plate 9 and a second semi-annular plate 10 are fixedly installed in the annular groove 8. The first semi-annular plate 9 and the second semi-annular plate 10 have an oil-containing cavity and a cavity respectively. A protrusion 16 is fixedly installed at the center of the gear body 1. A bearing mounting hole 6 is opened through the center of the protrusion 16. A bearing 7 is fixedly installed in the bearing mounting hole 6. A symmetrical conveying pipe 12 is fixedly connected to the inner side of the first semi-annular plate 9. One end of the symmetrical conveying pipe 12 passes through the protrusion 16 and communicates with the inside of the bearing 7. A number of suction hole columns 11 are fixedly installed on the inner side of the second semi-annular plate 10. A through pipe 14 is fixedly installed through and fixedly installed on the outer tooth surface of the gear body 1. One end of the through pipe 14 communicates with the cavity, and a fan 15 is fixedly installed on the inner wall of the through pipe 14.

[0024] It should be noted that the oil-containing cavity is used to hold lubricating oil. When the gear body 1 rotates at high speed, due to the centrifugal force, the lubricating oil can be input into the bearing 7 through the two side pipes 12 for lubrication. After the fan 15 is started, it generates a suction airflow. Thus, the several suction holes 11 can suck up the metal debris adhering to the surface when the gear body 1 is drilling and discharge it through one end of the pipe 14.

[0025] refer to Figure 1 and Figure 2 As shown, a wear-resistant mounting sleeve 2 is fixedly provided on the surface of the gear body 1, and the wear-resistant mounting sleeve 2 is in contact with the outer teeth of the gear body 1.

[0026] It should be noted that the wear-resistant mounting sleeve 2 can improve the wear resistance of the outer tooth surface of the gear body 1.

[0027] refer to Figure 1 and Figure 2 As shown, the gear body 1 has several weight-reducing drill holes 3 through it on the front.

[0028] It should be noted that the several weight-reducing holes 3 drilled are used to reduce the weight of the gear body 1 itself, making the handling and transportation process easier and the actual rotation operation smoother and faster.

[0029] refer to Figure 1 and Figure 2 As shown, the surface of the gear body 1 is carburized.

[0030] It should be noted that the carburized gear body 1 has improved hardness, wear resistance, and fatigue strength compared to ordinary gears.

[0031] refer to Figure 1 and Figure 2 As shown, a threaded oil delivery hole 4 communicating with the oil cavity is opened through the outer tooth surface of the gear body 1, and a sealing bolt 5 is installed in the inner thread of the threaded oil delivery hole 4.

[0032] It should be noted that the threaded oil supply hole 4 is used to replenish the internal lubricating oil of the gear body 1 from the outside. After replenishment, the sealing bolt 5 can be installed to seal the threaded oil supply hole 4.

[0033] refer to Figure 1 and Figure 3 As shown, the outer wall of the bearing 7 has symmetrical oil passage holes 13, which are connected to one end of the symmetrical conveying pipe 12.

[0034] It should be noted that the lubricating oil in the pipes 12 on both sides enters the bearing 7 through the oil passage 13, thereby lubricating the balls inside.

[0035] The working principle of the wear-resistant powder metallurgy gear provided by this utility model is as follows:

[0036] When the gear body 1 needs to drill a weight-reducing hole 3, the blower 15 is started in advance to generate a suction airflow. During the drilling process, a large amount of metal debris will be generated and adhere to the surface of the gear body 1. The ends of several suction hole columns 11 will suck the metal debris on the surface into the cavity and finally pull it out from one end of the through pipe 14. Before the actual application operation, the sealing bolt 5 of the gear body 1 is removed, and the lubricating oil is introduced into the oil cavity through the threaded oil supply hole 4. After the introduction is completed, the sealing bolt 5 is re-threaded into the threaded oil supply hole 14 for sealing. During the high-speed rotation of the gear body 1, due to the centrifugal force, the lubricating oil in the oil cavity will enter the bearing 7 through the two side supply pipes 12 and the two side through holes 13 for lubrication.

[0037] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0038] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A wear-resistant powder metallurgy gear, characterized in that, include: A gear body (1) has an annular groove (8) at its inner edge. A first half-ring plate (9) and a second half-ring plate (10) are fixedly installed in the annular groove (8). An oil-containing cavity and a cavity are respectively opened in the first half-ring plate (9) and the second half-ring plate (10). A protrusion (16) is fixedly installed at the center of the gear body (1). A bearing mounting hole (6) is opened through the center of the protrusion (16). A bearing (7) is fixedly installed in the bearing mounting hole (6). A symmetrical conveying pipe (12) is fixedly connected to the inner side of the first half-ring plate (9). One end of the symmetrical conveying pipe (12) passes through the protrusion (16) and communicates with the inside of the bearing (7). A plurality of suction hole columns (11) are fixedly installed on the inner side of the second half-ring plate (10).

2. The wear-resistant powder metallurgy gear according to claim 1, characterized in that, A wear-resistant mounting sleeve (2) is fixedly provided on the surface of the gear body (1), and the wear-resistant mounting sleeve (2) is in contact with the outer teeth of the gear body (1).

3. The wear-resistant powder metallurgy gear according to claim 1, characterized in that, The gear body (1) has several weight-reducing drill holes (3) drilled through its front side.

4. The wear-resistant powder metallurgy gear according to claim 1, characterized in that, The surface of the gear body (1) is carburized.

5. The wear-resistant powder metallurgy gear according to claim 1, characterized in that, The outer tooth surface of the gear body (1) is provided with a threaded oil delivery hole (4) that communicates with the oil cavity, and a sealing bolt (5) is installed in the threaded oil delivery hole (4).

6. The wear-resistant powder metallurgy gear according to claim 1, characterized in that, The outer wall of the bearing (7) is provided with symmetrical oil passage holes (13), which are connected to one end of the symmetrical conveying pipe (12).

7. The wear-resistant powder metallurgy gear according to claim 1, characterized in that, A through pipe (14) is fixedly installed on the outer tooth surface of the gear body (1). One end of the through pipe (14) is connected to the cavity, and a fan (15) is fixedly installed on the inner wall of the through pipe (14).

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