Low-noise wear-resistant gear

Abstract

The utility model discloses a low-noise wear-resistant gear which comprises a gear body and is characterized in that honeycomb grooves in a honeycomb structure shape are formed in the two side faces of the gear body, and sound absorption blocks are filled in the honeycomb grooves in a one-to-one correspondence mode. And the depth of the honeycomb grooves is 1 / 5-1 / 4 of the thickness of the gear body, the honeycomb grooves of honeycomb structures are formed in the two side faces of the gear body, and the honeycomb grooves are filled with sound absorption blocks, so that noise is reduced while the supporting stability of the gear body is improved. The annular groove is formed in the periphery of the gear body, the annular groove penetrates through each gear tooth, and when the gear rotates at a low speed, oil flows along the rotating annular groove through the gravity of the oil so that the gear teeth can be lubricated. Through the arrangement of the through groove, the annular cavity and the oil injection opening, when lubricating oil is dropwise added into the oil injection opening, the gear rotates, oil liquid lubricates each gear tooth through the barrel groove and the annular groove under the action of centrifugal force, and noise generated by friction is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of gears, and in particular relates to a low-noise and wear-resistant gear. Background Art

[0002] Gears are mechanical components with gears on the wheel rim that continuously mesh to transmit motion and power. Gears vibrate when they rotate. The reason for gear vibration is that when the gears are transmitting, friction and contact are generated, which repeatedly form noise. The long-term existence of gear transmission noise not only affects the production environment, but also harms the health of operators. Therefore, it is very important to find a reasonable way to reduce gear transmission noise.

[0003] There are generally five reasons for noise: first, the vibration speed of the gear when running is too fast, which will affect the frequency of vibration and generate noise; second, the gear vibration caused by load impact. When the gear is subjected to different degrees of load, the frequency of vibration and the direction of torsion will also be different. Most of them will form a vibration force in the circumferential direction, which will produce smooth noise; third, the noise caused by resonance. The vibration generated by the gear itself and the vibration generated by the friction between the gears are at the same frequency, which will cause primary resonance noise; fourth, the surface smoothness of the gear is not enough, the gear surface is too rough, the friction surface is large when rubbing against each other, and the vibration frequency is high; fifth, there is a lack of correct lubrication method.

[0004] A Chinese patent with patent number 201320473224.5 discloses a low-noise gear. The utility model reduces noise by placing ten glass fiber wool blocks in the gear body. The technical solution has a simple structure and a poor noise reduction effect. By adding glass fiber wool blocks and placing them on the grooves of the gear body, the stability of the gear body support is reduced, and noise reduction can only be achieved by absorbing noise alone.

[0005] In addition, the low-noise gears in the prior art have poor lubrication effects by spraying oil on the gear tooth surface, resulting in poor noise reduction effects. Therefore, improvements are needed. Utility Model Content

[0006] The utility model aims to provide a low-noise gear, and the technical problem to be solved is that the supporting stability and sound absorption effect of the whole gear are not good when glass fiber wool blocks are placed in grooves arranged in an array on the gear body.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The utility model provides a low-noise wear-resistant gear, comprising a gear body, characterized in that: both sides of the gear body are provided with honeycomb grooves in a honeycomb structure, the honeycomb grooves are filled with sound-absorbing blocks one by one, and the depth of the honeycomb grooves is 1 / 5 to 1 / 4 of the thickness of the gear body.

[0009] Honeycomb grooves with a honeycomb structure are arranged on both sides of the gear body, and sound-absorbing blocks are filled in the honeycomb grooves to improve the support stability of the gear body and reduce noise.

[0010] Optionally, an annular groove is provided on the outer peripheral surface of the gear body, and the annular groove passes through a number of gear teeth located on the outer peripheral part of the gear body. By providing an annular groove on the outer periphery of the gear body and passing the annular groove through each gear tooth, when the gear rotates at a low speed, the oil flows along the rotating annular groove due to its own gravity to achieve lubrication of the gear teeth.

[0011] Optionally, an annular cavity is provided inside the gear body, and the annular cavity is located at the outer periphery of a connecting sleeve integrally formed in the gear body. A plurality of through grooves facing the roots of gear teeth on the outer periphery of the gear body are also provided inside the gear body, and the ends of the through grooves are connected with the annular cavity, and oil filling ports are provided on both sides of the gear body to be connected with the annular cavity. By providing the oil filling port to be connected with the annular cavity, lubricating oil is added to the oil filling port to allow oil to enter the interior of the gear. When the gear rotates, the oil lubricates each gear tooth through the barrel groove and the annular groove under the action of its own gravity and centrifugal force, thereby reducing noise generated by gear tooth friction.

[0012] Optionally, the end of the annular groove is connected to a through groove away from the end of the annular cavity.

[0013] Optionally, the low-noise and wear-resistant gear also includes two sealing covers and two sealing rings, wherein the two sealing covers are connected to the two sides of each gear body, and each sealing ring is abutted in each sealing cover and sealedly connected to the gear body. By setting the sealing cover, the honeycomb groove and the sound-absorbing block are hidden in the gear body, thereby improving the noise reduction effect.

[0014] Optionally, the outer end of each sealing cover is provided with a horizontal plate for easy hand holding.

[0015] Optionally, each of the through grooves is connected to the end portion near the gear teeth with a pair of diverter chambers, and the pair of diverter chambers are correspondingly connected to the two sides of each gear tooth. By setting a pair of diverter chambers at the end portion of the through groove to connect to the two sides of each gear, the oil in the annular chamber can be directly lubricated on both sides of each gear tooth through the diverter chamber under the action of centrifugal force when the gear rotates.

[0016] Optionally, the gear body also includes two connecting rings and two rubber rings, each connecting ring is fixed at the end of the connecting sleeve in the gear body and is adapted to the caliber of the connecting sleeve, and each rubber ring is correspondingly fixed at the end of each connecting ring. By arranging the rubber ring at the end of the connecting sleeve, when the gears are sleeved, the rubber ring is tightened on the shaft to intercept dust and impurities on the shaft.

[0017] Optionally, the sound absorbing block is made of a material with sound absorbing properties.

[0018] Beneficial effects and advantages of the utility model:

[0019] The low-noise wear-resistant gear has the following benefits: by arranging honeycomb grooves with a honeycomb structure on both sides of the gear body and filling the honeycomb grooves with sound-absorbing blocks, the support stability of the gear body is improved while reducing noise.

[0020] By setting an annular groove on the outer periphery of the gear body and passing through each gear tooth through the annular groove, when the gear rotates at a low speed, the oil flows along the rotating annular groove by its own gravity to achieve lubrication of the gear teeth. By setting a rubber ring with a slightly smaller diameter at the end of the connecting sleeve, when the gear is sleeved, the rubber ring is tightened on the shaft to intercept dust and impurities on the shaft. By setting a through groove, annular cavity and oil filling port, when the lubricating oil is dripped into the oil filling port, the gear rotates and the oil passes through the barrel groove and the annular groove to lubricate each gear tooth under the action of centrifugal force, thereby reducing the noise caused by friction. By setting a pair of diverter cavities at the end of the through groove to lead to both sides of each gear, the oil in the annular cavity can be directly lubricated on both sides of each gear tooth through the diverter cavity under the action of centrifugal force when the gear rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of the first embodiment of the utility model;

[0022] Figure 2 This is a cross-sectional view of the first embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the explosion structure of the second embodiment of the utility model;

[0024] Figure 4 It is a partial enlarged schematic diagram of the second embodiment of the utility model;

[0025] Figure 5 This is a cross-sectional view of the second embodiment of the utility model;

[0026] Figure 6 This is a cross-sectional view of embodiment 3 of the present utility model.

[0027] In the figure: 1-connecting sleeve, 2-gear body, 3-gear teeth, 4-honeycomb groove, 5-connecting ring, 6-rubber ring, 7-annular groove, 8-sound absorbing block, 9-sealing cover, 10-sealing groove, 11-sealing ring, 12-sealing thread, 13-cross plate, 14-through groove, 15-annular cavity, 16-oil filling port, 17-diverter cavity. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model. Example 1

[0029] like Figure 1 to Figure 2 As shown, this embodiment provides a low-noise wear-resistant gear, including a gear body 2, wherein the gear body 2 includes a peripheral array of gear teeth 3 and a connecting sleeve 1 fixed at the center;

[0030] refer to Figure 1 and Figure 2 As shown, in this embodiment, the gear body 2 is preferably a hollow annular structure, wherein the connecting sleeve 1 is preferably made into a hollow shaft structure using the integrated molding technology in the prior art and the two ends slightly extend out of the gear body 2, wherein the gear teeth 3 are also preferably fixed in a circular array on the outer periphery of the gear body 2 using the integrated molding technology in the prior art.

[0031] In this embodiment, honeycomb grooves 4 are provided on two side surfaces of the gear body 2, wherein the honeycomb grooves 4 are preferably notches of a honeycomb structure in the prior art, and the depth of the honeycomb grooves 4 is 1 / 5 to 1 / 4 of the thickness of the gear body 2. In this embodiment, the honeycomb grooves 4 are annular as a whole and abut against the inner wall of the outer peripheral surface of the fixed gear teeth 3 of the gear body 2 and the connecting sleeve 1;

[0032] In this embodiment, the interior of each honeycomb groove 4 is filled with a sound-absorbing block 8, wherein the sound-absorbing block 8 is preferably made of a material with sound-absorbing properties in the prior art, such as glass fiber wool, wherein the glass fiber wool is fixed to the honeycomb groove 4 by gluing in the prior art.

[0033] When in use, the noise generated by the vibration of the gear rotation is absorbed by the sound-absorbing block 8 located in the honeycomb groove 4, which effectively reduces the noise. In addition, by adopting the honeycomb groove 4 with a honeycomb structure, the weight of the gear body 2 is reduced while meeting the support and stability strength requirements.

[0034] refer to Figure 2 As shown, in this embodiment, the outer peripheral surface of the hollow annular structure gear body 2 is provided with an annular groove 7, wherein there are three annular grooves 7. In this embodiment, the arc groove 7 is provided in close contact with the outer peripheral surface of the gear body 2 and penetrates each array of gear teeth 3 on the outer peripheral portion of the gear body 2;

[0035] When in use, the gear is connected to an external mechanism through gear teeth, and noise is generated due to vibration. Lubricating oil is dripped onto the gear teeth 3. At this time, the gear is controlled to rotate slowly. The dripped oil flows to both sides of each gear tooth 3 through the annular groove 7 under the action of its own gravity, thereby reducing noise through lubrication.

[0036] refer to Figure 1 and Figure 2 As shown, in this embodiment, both ends of the connecting sleeve 1 extending out of the gear body 2 are fixed with connecting rings 5, wherein the connecting rings 5 ​​are fixed by welding, and the caliber of the connecting rings 5 ​​is the same as the caliber of the connecting sleeve 1, wherein each connecting ring 5 is fixed with a rubber ring 6 at the outer end facing the connecting sleeve 1, wherein the rubber ring 6 is made of rubber material in the prior art into an annular structure, wherein the rubber ring 6 can be fixed by gluing technology in the prior art, and the inner diameter of the rubber ring 6 is slightly smaller than the inner diameter of the connecting sleeve 1;

[0037] When in use, the gear device is fixed in the inner ring of the connecting sleeve 1 through the shaft. When the shaft is inserted or withdrawn, it first passes through the two ends of the connecting sleeve 1 extending toward the outer end of the gear body 2. The rubber rings 6 fixed at both ends are tightened and fit against the surface of the shaft. When the shaft is inserted or withdrawn, the rubber rings 6 block and clean the impurities or dust covering its surface. Example 2

[0038] like Figures 3 to 5 As shown, this embodiment can also be designed as follows based on the first embodiment:

[0039] refer to Figure 5 As shown, in this embodiment, there is only one annular groove 7 on the outer peripheral surface of the gear body 2 of the hollow annular structure. In this embodiment, a through groove 14 is opened inside the gear body 2, wherein the through groove 14 is preferably a cylindrical cavity and corresponds to the gear teeth 3 one by one. In this embodiment, an annular cavity 15 is also opened inside the gear body 2, wherein the annular cavity 15 is located inside the gear body 2 toward the outer peripheral portion of the connecting sleeve 1. In this embodiment, one end of each through groove 14 is connected to the annular groove 7, and the other end is connected to the annular cavity 15;

[0040] refer to Figure 4 As shown, in this embodiment, the gear body 2 is provided with oil filling ports 16 on both sides of the connecting sleeve 1, wherein the number of oil filling ports 16 on each side is three, and the oil filling ports 16 are sealed with detachable sealing plugs.

[0041] When in use, oil is poured into the oil filling port 16 by opening the sealing plug, and the oil enters the annular cavity 15. At this time, the gear rotates, and the oil enters each through groove 14 under the action of centrifugal force, and then enters the annular groove 7, lubricating the two side surfaces of each gear tooth 3 to reduce noise. The gear speed can also be reduced to allow the oil to flow along the annular groove 7 under the action of its own gravity and centrifugal force to achieve lubrication and noise reduction of each gear tooth 3.

[0042] refer to Figure 3 As shown, in this embodiment, the gear body 2 is located on both sides of the connecting sleeve 1 connected outwardly and is provided with annular connecting grooves, wherein the gear body 2 is connected to a sealing cover 9 through the inner wall of the connecting groove, wherein the outer peripheral surface of the sealing cover 9 is provided with a sealing thread 12, and the sealing cover 9 is threadedly connected to the inner wall of the connecting groove through the sealing thread 12;

[0043] In this embodiment, a sealing groove 10 is provided on the inner side of the sealing cover 9 and the gear body 2, wherein a sealing ring 11 is filled and placed in the sealing groove 10, wherein the sealing ring 11 is preferably made of rubber material, and in this embodiment, an annular groove is provided on the surface of the sealing cover 9 away from the connecting sleeve 1, wherein a plurality of horizontal plates 13 are fixed in the groove;

[0044] During use, after the operator has finished filling oil through the oil filling port 16, the operator connects and disassembles the sealing cover 9 by rotating the horizontal plate 13, and connects the sealing cover 9 to the gear body 2 through the sealing thread 12 on the outer periphery of the sealing cover 9, so as to seal the honeycomb grooves 4 on both sides of the gear body 2. Example 3

[0045] like Figure 6 As shown, based on the first and second embodiments, this embodiment can also be designed as follows:

[0046] refer to Figure 6 As shown, in this embodiment, the annular groove 7 in the second embodiment is removed, and a pair of diverter cavities 17 are opened at the end of each through groove 14 inside the gear body 2, wherein each diverter cavity 17 is connected to the two side surfaces of the gear tooth 3 corresponding to the current through groove 14.

[0047] When in use, after the operator has finished filling oil through the oil filling port 16, the lubricating oil enters the annular cavity 15. When the gear rotates, under the action of the oil's own gravity and centrifugal force, the oil enters the diverter cavity 17 through the through groove 14, and the lubricating oil is added to the surface of the gear teeth 3 through the diverter cavity 17 to achieve lubrication and reduce noise.

[0048] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all fall within the protection of the present invention.

Claims

1. A low noise and wear-resistant gear, comprising a gear body (2), characterized in that: Honeycomb grooves (4) in the form of a honeycomb structure are provided on both sides of the gear body (2), and the honeycomb grooves (4) are filled with sound absorbing blocks (8) in a one-to-one correspondence, and the depth of the honeycomb grooves (4) is 1 / 5 to 1 / 4 of the thickness of the gear body (2).

2. The low noise and wear-resistant gear according to claim 1, characterized in that: The outer peripheral surface of the gear body (2) is provided with an annular groove (7), and the annular groove (7) annularly penetrates a plurality of gear teeth (3) located on the outer peripheral portion of the gear body (2).

3. The low noise and wear resistant gear according to claim 2, characterized in that: An annular cavity (15) is provided inside the gear body (2), and the annular cavity (15) is located at the outer periphery of a connecting sleeve (1) integrally formed inside the gear body (2). A plurality of through grooves (14) are also provided inside the gear body (2) facing the tooth roots of the gear teeth (3) at the outer periphery of the gear body (2), and the ends of the through grooves (14) are in communication with the annular cavity (15), and oil filling ports (16) in communication with the annular cavity (15) are provided on both side surfaces of the gear body (2).

4. The low noise and wear-resistant gear according to claim 3, characterized in that: The end of the annular groove (7) is in communication with a through groove (14) away from the end of the annular cavity (15).

5. The low noise and wear-resistant gear according to claim 4, characterized in that: The low-noise wear-resistant gear further comprises two sealing covers (9) and two sealing rings (11), wherein the two sealing covers (9) are connected to two side surfaces of each gear body (2), and each sealing ring (11) abuts against each sealing cover (9) and is sealedly connected to the gear body (2).

6. The low noise and wear resistant gear according to claim 5, characterized in that: The outer end of each sealing cover (9) is provided with a horizontal plate (13) that is convenient for hand gripping.

7. The low noise and wear resistant gear according to claim 6, characterized in that: A pair of flow diversion chambers (17) are provided at the end of each through slot (14) close to the gear tooth (3), and the pair of flow diversion chambers (17) are connected to the two sides of each gear tooth (3) respectively.

8. The low noise and wear resistant gear according to claim 7, characterized in that: The low-noise wear-resistant gear further comprises two connecting rings (5) and two rubber rings (6), each connecting ring (5) is fixed to the end of the connecting shaft sleeve (1) in the gear body (2) and is adapted to the caliber of the connecting shaft sleeve (1), and each rubber ring (6) is correspondingly fixed to the end of each connecting ring (5).

9. The low noise and wear-resistant gear according to claim 8, characterized in that: The sound absorbing block (8) is made of a material having sound absorbing properties.

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