Self-lubricating gear

Abstract

The utility model provides a self-lubricating gear, belongs to the field of transmission structures, and solves the problems that lubricating oil is easy to lose, the effective time of the lubricating oil is short and the lubricating oil is frequently supplemented when the gear works. The utility model comprises a mounting part and a fixing part, the mounting part and the fixing part are fixedly mounted through a bolt, a first storage groove is arranged in the mounting part, an oil outlet is arranged on the first storage groove, a second storage groove complementary with the first storage groove is arranged on the fixing part, an oil filling hole is arranged on the second storage groove, and a choke valve is mounted on the oil outlet. A movable core is arranged in the choke valve and is pulled and sealed by a spring, an oil filler plug is installed on the oil filler hole, and a threaded plug is installed in the oil filler plug. The gear has the advantages that the storage groove I for storing the lubricating liquid is formed in the gear, so that the gear can be continuously lubricated when the gear works; the threaded plug arranged on the oil filler plug is convenient for oil filling, and meanwhile, the sealing performance of the oil filler hole is ensured; and the choke valve can prevent the lubricating oil from leaking when the gear is idle.

Description

Technical Field

[0001] The utility model belongs to the field of transmission structures and relates to a gear, in particular to a self-lubricating gear. Background Art

[0002] Gear refers to a mechanical element with gears on the wheel rim that continuously mesh to transmit motion and power. Gear transmission is a common, low-cost power transmission device with the advantages of smooth movement, cleanliness, and low noise, and its application is very wide.

[0003] When installing the gears, lubricating oil and grease are applied as lubricants to prevent dry grinding between the gears, which causes wear on the gear teeth and reduces the service life of the gears. During the operation of existing gears, the lubricating oil will be lost quickly due to the high temperature, resulting in long-term hard contact between the gears, which is prone to dry grinding. Frequent maintenance and lubricating oil are required, the maintenance cycle is short, and the lubricating oil is used for a short time, which reduces work efficiency.

[0004] For example, a gear with patent number CN202121708043.7 includes a gear body, a protrusion is provided on one side of the gear teeth, a groove is provided on the other side, a cavity is also provided in the gear teeth, and the cavity is filled with sound-absorbing cotton.

[0005] The above patent improves the noise reduction effect of gears by providing protrusions and grooves on both sides of the gear teeth and embedding silencer cotton inside the gear teeth. However, the gears still need to be lubricated frequently, otherwise the dry grinding of the gear teeth will also generate a lot of noise, and the protrusions and grooves set on the side of the gear teeth will be worn, resulting in a decrease in the noise reduction effect. Utility Model Content

[0006] The utility model aims to solve the above problems in the prior art and provides a self-lubricating gear which is divided into multiple parts and is convenient for replacing the gear tooth shape and shaft hole.

[0007] The utility model can be implemented through the following technical scheme: a self-lubricating gear includes a mounting part and a fixing part, the mounting part is provided with gear teeth on the periphery, grooves are formed between the gear teeth, a storage groove 1 is provided in the mounting part, the storage groove 1 is provided with oil outlet holes along the periphery, the oil outlet holes penetrate the mounting part to the groove, the fixing part is installed in the mounting part, a storage groove 2 is provided on the fixing part, an oil filling hole is provided on the storage groove 2, the fixing part is fixedly connected to the mounting part by bolts, and a sealing gasket 2 is installed at the contact between the fixing part and the mounting part.

[0008] In the above-mentioned self-lubricating gear, a positioning groove is provided on the mounting portion, and a positioning block is provided on the fixing portion.

[0009] In the above-mentioned self-lubricating gear, a choke valve is fixed on the oil outlet, and a movable core is installed in the choke valve.

[0010] In the above-mentioned self-lubricating gear, a guide rod is arranged on the movable core, a spring is installed on the guide rod, and the spring connects the guide rod and the choke valve.

[0011] In the above-mentioned self-lubricating gear, a positioning ring is provided on the first storage groove, and a matching positioning ring groove is provided on the second storage groove.

[0012] In the above-mentioned self-lubricating gear, a sealing gasket 1 is installed at the positioning ring.

[0013] In the above-mentioned self-lubricating gear, an oil filling plug is installed in the oil filling hole, and a sealing ring is provided on the oil filling plug.

[0014] In the above-mentioned self-lubricating gear, a through hole is provided in the oil filling plug, a thread is provided in the through hole, and a threaded plug is installed in the through hole.

[0015] Compared with the prior art, the utility model has the advantages that lubricating oil is stored inside the gear, and when the gear rotates, the lubricating oil can exert pressure on the choke valve through centrifugal force and push the choke valve open, so that the gear can be continuously lubricated when working, and the lubricating oil can be prevented from being lost when the gear is not working. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of a self-lubricating gear;

[0017] Figure 2 It is an exploded view of a self-lubricating gear;

[0018] Figure 3 It is a bottom view of the fixed part of the self-lubricating gear;

[0019] Figure 4 It is a cross-sectional view of the oil filling plug of the self-lubricating gear;

[0020] Figure 5 is a cross-sectional view of a choke valve of a self-lubricating gear;

[0021] Among them, 1. mounting part; 11. gear teeth; 12. groove; 13. storage tank one; 131. oil outlet hole; 132. positioning ring; 133. sealing gasket one; 14. positioning groove; 2. fixing part; 21. storage tank two; 211. positioning ring groove; 22. oil filling hole; 221. oil filling plug; 221a. sealing ring; 221b. through hole; 221c. thread; 222. threaded plug; 23. positioning block; 3. bolt; 4. choke valve; 41. movable core; 411. guide rod; 412. spring; 5. sealing gasket two. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figures 1 to 5 As shown, the utility model can be implemented through the following embodiments: a self-lubricating gear includes a mounting portion 1 and a fixing portion 2, the mounting portion 1 is provided with gear teeth 11 on the periphery, grooves 12 are formed between the gear teeth 11, a storage groove 13 is provided in the mounting portion 1, the storage groove 13 is provided with oil outlet holes 131 along the circumference, the oil outlet holes 131 penetrate the mounting portion 1 to the groove 12, the fixing portion 2 is installed in the mounting portion 1, a storage groove 21 is provided on the fixing portion 2, an oil filling hole 22 is provided on the storage groove 21, the fixing portion 2 is fixedly connected to the mounting portion 1 by bolts 3, and a sealing gasket 2 5 is installed at the contact between the fixing portion 2 and the mounting portion 1.

[0024] A storage tank 13 is provided in the gear for storing lubricating oil. When the gear is working, the lubricating oil flows out from the oil outlet 131. The storage tank 21 cooperates with the storage tank 13 to seal the lubricating oil inside the gear to prevent the lubricating oil from being lost, and the lubricating oil is added to the storage tank 13 through the oil filling hole 22 provided on the storage tank 21. The sealing gasket 2 5 is used to prevent the lubricating oil from leaking from the contact surface of the fixing part 2 and the mounting part 1, thereby improving the sealing performance.

[0025] like Figures 1 to 3 As shown, a positioning groove 14 is provided on the mounting portion 1, and a positioning block 23 is provided on the fixing portion 2. The positioning groove 14 and the positioning block 23 are used to quickly locate the installation position of the bolt 3, thereby improving the assembly efficiency of the mounting portion 1 and the fixing portion 2.

[0026] like Figure 2 and Figure 5 As shown, a choke valve 4 is fixed on the oil outlet 131, and a movable core 41 is installed in the choke valve 4. The choke valve 4 is used to block the oil outlet 131 when the gear is not working to prevent the lubricating oil from leaking; the movable core 41 allows the lubricating oil to open the choke valve 4 under the action of centrifugal force, and the lubricating oil is applied when the gear is working.

[0027] like Figure 5 As shown, a guide rod 411 is provided on the movable core 41, and a spring 412 is installed on the guide rod 411, and the spring 412 connects the guide rod 411 and the choke valve 4. The guide rod 411 is used to guide the direction of the movable core 41, so that the movable core 41 can be reset normally when moving back and forth; the spring 412 is used to pull the guide rod 411 to ensure that the movable core 41 keeps the choke valve 4 closed when the gear is not working.

[0028] like Figure 2 and Figure 3As shown, a positioning ring 132 is provided on the storage groove 13, and a matching positioning ring groove 211 is provided on the storage groove 21. The positioning ring 132 and the positioning ring groove 211 are provided to facilitate the positioning and installation of the mounting part 1 and the fixing part 2. The mounting surfaces of the positioning ring groove 211 and the positioning ring 132 are tortuous, and the sealing performance is good.

[0029] like Figure 2 As shown, a sealing gasket 133 is installed at the positioning ring 132. The sealing gasket 133 is used to prevent the lubricating oil from leaking from the storage tank 13 and improve the sealing performance.

[0030] like Figures 1 to 4 As shown, an oil filling plug 221 is installed in the oil filling hole 22, and a sealing ring 221a is provided on the oil filling plug 221. The oil filling plug 221 is used to prevent the lubricating oil from leaking from the storage tank 13, and the setting of the sealing ring 221a improves the sealing performance.

[0031] like Figure 4 As shown, a through hole 221b is provided in the oil filling plug 221, a thread 221c is provided in the through hole 221b, and a threaded plug 222 is installed in the through hole 221b. The installation of the threaded plug 222 allows maintenance personnel to add oil to the storage tank 13 without removing the oil filling hole 22, ensuring the sealing of the oil filling plug 221 while facilitating the addition of oil.

[0032] The working principle of the utility model is: after the gears are assembled, the threaded plug 222 on the oil filling plug 221 is turned down, and the lubricating oil is added to the storage tank 13 through the through hole 221b. After the gears are assembled, during the working process of the gears, the lubricating oil is impacted by the centrifugal force on the choke valve 4, and overcomes the tension of the spring 412 affecting the movable core 41, so that the lubricating oil flows out from the oil outlet 131 to lubricate the gears; when the gears are not working, the pressure of the lubricating oil is not enough to overcome the tension of the spring 412, and the choke valve 4 is sealed to prevent the leakage of the lubricating oil.

[0033] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0034] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A self-lubricating gear, comprising a mounting portion (1) and a fixing portion (2), wherein gear teeth (11) are arranged on the periphery of the mounting portion (1), and grooves (12) are formed between the gear teeth (11), characterized in that: The mounting portion (1) is provided with a storage groove (13) therein, and an oil outlet hole (131) is provided along the circumference of the storage groove (13). The oil outlet hole (131) penetrates the mounting portion (1) to the groove (12). The fixing portion (2) is mounted in the mounting portion (1). The fixing portion (2) is provided with a storage groove (21). The storage groove (21) is provided with an oil filling hole (22). The fixing portion (2) and the mounting portion (1) are fixedly connected by bolts (3). A sealing gasket (5) is installed at the contact point between the fixing portion (2) and the mounting portion (1). A choke valve (4) is fixed on the oil outlet hole (131). A movable core (41) is installed in the choke valve (4). A guide rod (411) is provided on the movable core (41). A spring (412) is installed on the guide rod (411). The spring (412) connects the guide rod (411) and the choke valve (4).

2. A self-lubricating gear according to claim 1, characterized in that: The mounting portion (1) is provided with a positioning groove (14), and the fixing portion (2) is provided with a positioning block (23).

3. The self-lubricating gear according to claim 1, characterized in that: The first storage groove (13) is provided with a positioning ring (132), and the second storage groove (21) is provided with a matching positioning ring groove (211).

4. A self-lubricating gear according to claim 3, characterized in that: A sealing gasket 1 (133) is installed at the positioning ring (132).

5. The self-lubricating gear according to claim 1, characterized in that: An oil filling plug (221) is installed in the oil filling hole (22), and a sealing ring (221a) is provided on the oil filling plug (221).

6. A self-lubricating gear according to claim 5, characterized in that: A through hole (221b) is provided in the oil filling plug (221), a thread (221v) is provided in the through hole (221b), and a threaded plug (222) is installed in the through hole (221b).

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