Low-error transmission gear

Abstract

The utility model relates to the technical field of transmission gears, and discloses a low-error transmission gear which comprises a gear disc and further comprises heat dissipation assemblies arranged on the two sides of the gear disc and used for rapidly dissipating working heat of gear teeth. The lubricating assembly is arranged in the wheel disc and used for reducing friction outside the wheel teeth. The contact area between the heat conduction plate and external air can be increased through the heat dissipation holes, when the wheel disc and the gear teeth are driven by the driving gear to rotate, the external air can take away heat in the heat conduction plate through the heat dissipation holes, the temperature of the wheel disc and the gear teeth is continuously kept constant, and precision reduction caused by thermal deformation of the wheel disc and the gear teeth due to too high temperature is avoided; the matching error is increased; lubricating oil is input into all the oil outlets through the first oil channel and the second oil channel, so that the lubricating oil is evenly distributed on the outer sides of the gear teeth, the large matching error between the gears caused by excessive abrasion of the gear teeth is avoided, and the low error state between the transmission gear and the driving gear is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission gears, in particular to a low-error transmission gear. Background Art

[0002] Gear is a transmission mechanical device, which refers to a mechanical element with teeth on the rim that can continuously mesh to transmit motion and power. Gears are widely used in transmission, and gear transmission works by the meshing of teeth. It has the characteristics of relatively accurate transmission, long life and high efficiency. In order to ensure the compact fit and small error between the transmission gear and the drive gear, special processing and design are required.

[0003] When in use, the existing transmission gear is generally installed on the outside of the transmission shaft through a key. When working, the transmission gear and the drive gear operate by the meshing between the gear teeth. The friction between the gear teeth is intense and generates a lot of heat. When the heat accumulates to a certain extent, the gear teeth and the wheel disc are easily thermally deformed, which affects the matching accuracy between the gears and increases the error value of the transmission gear. At the same time, after working for a long time, the gear teeth will continue to wear, which further aggravates the error value of the transmission gear and is not conducive to the long-term use of the transmission gear. Utility Model Content

[0004] The purpose of the utility model is to provide a low-error transmission gear to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a low-error transmission gear, comprising a wheel disc, a plurality of gear teeth are symmetrically mounted on the outer side of the wheel disc, a first fixing cylinder is provided at the center of one side of the wheel disc, and further comprising:

[0006] A heat dissipation assembly is arranged on both sides of the wheel disc to quickly dissipate the working heat of the gear teeth. A connecting assembly is arranged on the outer side of the first fixing cylinder to facilitate quick assembly with the wheel disc. A limiting assembly is arranged at one end of the first fixing cylinder to prevent the connecting assembly from being separated from the wheel disc.

[0007] A lubrication component is arranged inside the wheel disc to reduce the friction force on the outer side of the gear teeth, and a protective component is arranged on the outer wall of the gear teeth to increase the overall wear resistance of the wheel disc.

[0008] Preferably, the heat dissipation assembly includes a second annular seat arranged on the outside of the wheel disc, a second fixed cylinder is coaxially fixedly connected to one side of the second annular seat, a plurality of heat conducting plates are symmetrically arranged on the outside of the second fixed cylinder, the heat conducting plates are fixedly mounted on the second annular seat, a heat dissipation groove corresponding to the heat conducting plate is opened on the outside of the wheel disc, one side of the heat conducting plate is located inside the heat dissipation groove, and a plurality of heat dissipation holes are symmetrically opened on the other side of the heat conducting plate.

[0009] Preferably, the connecting assembly includes a keyway arranged on the inner wall of the first fixed cylinder, a plurality of limit blocks are symmetrically installed on the outer side of the first fixed cylinder, a limit groove corresponding to the limit block is opened on the inner wall of the wheel disc, and the limit block is located inside the limit groove.

[0010] Preferably, the limiting assembly includes a first annular seat arranged at one end of the first fixed cylinder, a docking block is fixedly connected to one side of the first annular seat, a docking groove corresponding to the docking block is opened at the port at one end of the first fixed cylinder, and the docking block is located inside the docking groove.

[0011] Preferably, the lubrication assembly includes a first oil channel arranged inside the wheel disc, an oil outlet is opened inside each gear tooth, a second oil channel is connected to one side of the oil outlet, an end of the second oil channel away from the oil outlet is connected to the first oil channel, and an oil filling port is provided on the outside of the first oil channel.

[0012] Preferably, the protective component includes a reinforcement layer arranged on the outer side of the gear teeth, the reinforcement layer is made of alloy steel material, and a wear-resistant layer is arranged on the outer side of the reinforcement layer, and the wear-resistant layer is made of chrome-plated material.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model transmits the heat generated by the wheel disc and the gear teeth when they are working to the inside of the heat conduction plate through the heat dissipation grooves through the second annular seat and the second fixed cylinder. The heat dissipation holes will increase the contact area between the heat conduction plate and the external air. When the wheel disc and the gear teeth are driven to rotate by the driving gear, the external air will take away the heat inside the heat conduction plate through the heat dissipation holes, so that the temperature of the wheel disc and the gear teeth is continuously kept constant, avoiding the reduction of accuracy and increase of matching error caused by thermal deformation of the wheel disc and the gear teeth due to excessive temperature; the lubricating oil is input into the first oil channel through the oil filling port, and the lubricating oil is input into each oil outlet through the first oil channel and the second oil channel, so that the lubricating oil is evenly distributed on the outside of the gear teeth, reducing the friction between the gear teeth, avoiding large matching error between gears caused by excessive wear of the gear teeth, and thus ensuring a low error state between the transmission gear and the driving gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of the low-error transmission gear provided by the utility model;

[0016] Figure 2 A schematic diagram of the specific structure of the first fixed cylinder and the wheel disc provided by the utility model;

[0017] Figure 3 A schematic diagram of the heat dissipation assembly structure provided by the utility model;

[0018] Figure 4A schematic diagram of the internal structure of the roulette wheel provided by the utility model;

[0019] Figure 5 for Figure 4 Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. wheel disc; 2. gear teeth; 3. limit assembly; 31. docking block; 32. first annular seat; 33. docking groove; 4. first fixed cylinder; 5. protection assembly; 51. reinforcement layer; 52. wear-resistant layer; 6. connection assembly; 61. limit block; 62. limit groove; 63. keyway; 7. heat dissipation assembly; 71. second annular seat; 72. second fixed cylinder; 73. heat conduction plate; 74. heat dissipation hole; 75. heat dissipation groove; 8. lubrication assembly; 81. first oil channel; 82. oil filling port; 83. second oil channel; 84. oil outlet. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5As shown, a low-error transmission gear comprises a wheel disc 1, and a plurality of gear teeth 2 are symmetrically mounted on the outer side of the wheel disc 1. By setting the gear teeth 2, it can mesh with the external driving gear, so as to drive the wheel disc 1 to rotate; a first fixed cylinder 4 is provided at the center of one side of the wheel disc 1, and also comprises: a heat dissipation component 7 arranged on both sides of the wheel disc 1 for quickly dissipating the working heat of the gear teeth 2. By setting the heat dissipation component 7, the heat generated by the friction between the gear teeth 2 is quickly dissipated from the wheel disc 1 to the external air, so as to avoid thermal deformation caused by excessive temperature and ensure that the gears are matched in a low-error state; a connecting component 6 is provided on the outer side of the first fixed cylinder 4 for convenient quick assembly with the wheel disc 1. By setting the connecting component 6, the first fixed cylinder 4 can be quickly assembled with the wheel disc 1, and at the same time, it is convenient for the quick connection between the wheel disc 1 and the transmission shaft. The first fixed cylinder 4 is provided with a limit assembly 3 at one end to prevent the connecting assembly 6 from being separated from the wheel disc 1. By setting the limit assembly 3, the first fixed cylinder 4 can be limited to the wheel disc 1, so that the wheel disc 1 is fixed to the transmission shaft; a lubricating assembly 8 is arranged inside the wheel disc 1 to reduce the friction force on the outer side of the gear teeth 2. By setting the lubricating assembly 8, the lubricating oil can be evenly applied to the outer side of the gear teeth 2, thereby reducing the friction force between the gear teeth 2 and slowing down the wear speed of the gear teeth 2, thereby avoiding large matching errors between gears caused by excessive wear of the gear teeth 2; a protective assembly 5 is provided on the outer wall of the gear teeth 2 to increase the overall wear resistance of the wheel disc 1. By setting the protective assembly 5, the gear teeth 2 are directly contacted with the driving gear instead of the gear teeth 2, thereby increasing the wear resistance and improving the working life of the gear teeth 2; in actual use, if Figure 2 , Figure 3 As shown, first, the staff inserts the first fixed cylinder 4 into the center of the wheel disc 1 and fixes the first fixed cylinder 4 on the wheel disc 1 by bolts, then connects the first annular seat 32 to the first fixed cylinder 4 by bolts, thereby preventing the first fixed cylinder 4 from detaching from the center of the wheel disc 1, and then aligns the heat conduction plate 73 with the heat dissipation groove 75 and fixes the second fixed cylinder 72 on both sides of the wheel disc 1 by bolts, thus completing the assembly work of the transmission gear.

[0023] The heat dissipation assembly 7 includes a second annular seat 71 arranged on the outer side of the wheel disc 1, and a second fixed cylinder 72 is coaxially fixedly connected to one side of the second annular seat 71. A plurality of heat conducting plates 73 are symmetrically arranged on the outer side of the second fixed cylinder 72, and the heat conducting plates 73 are fixedly mounted on the second annular seat 71. A heat dissipation groove 75 corresponding to the heat conducting plate 73 is opened on the outer side of the wheel disc 1, and one side of the heat conducting plate 73 is located inside the heat dissipation groove 75, and a plurality of heat dissipation holes 74 are symmetrically opened on the other side of the heat conducting plate 73. By utilizing the heat conducting plate 73, the heat generated by the wheel disc 1 and the gear 2 during operation will be transmitted to the inside of the heat conducting plate 73 through the heat dissipation groove 75, and the heat dissipation holes 74 increase the contact area between the heat conducting plate 73 and the external air. When the wheel disc 1 and the gear 2 are driven to rotate, the external air will pass through the heat dissipation holes 74 to take away the heat inside the heat conducting plate 73, so that the temperature of the wheel disc 1 and the gear 2 is continuously kept constant, thereby avoiding the reduction of accuracy and increase of matching error caused by thermal deformation of the wheel disc 1 and the gear 2 due to excessive temperature.

[0024] The connecting component 6 includes a key groove 63 arranged on the inner wall of the first fixed cylinder 4. By setting the key groove 63, it can cooperate with the key block on the transmission shaft, so that the wheel 1 can be installed on the transmission shaft by key cooperation; a plurality of limit blocks 61 are symmetrically installed on the outer side of the first fixed cylinder 4, and a limit groove 62 corresponding to the limit block 61 is opened on the inner wall of the wheel 1, and the limit block 61 is located inside the limit groove 62. By setting the limit groove 62 and the limit block 61, after the first fixed cylinder 4 is connected to the transmission shaft, the wheel 1 can drive the transmission shaft to rotate through the first fixed cylinder 4, thereby realizing gear transmission.

[0025] The limiting assembly 3 includes a first annular seat 32 arranged at one end of the first fixed cylinder 4, a docking block 31 is fixedly connected to one side of the first annular seat 32, a docking groove 33 corresponding to the docking block 31 is opened at the end of the first fixed cylinder 4, and the docking block 31 is located inside the docking groove 33. By setting the docking groove 33 and the docking block 31, the first fixed cylinder 4 and the first annular seat 32 are formed into a whole, thereby limiting the first fixed cylinder 4 from detaching from the center of the wheel disc 1.

[0026] The lubrication assembly 8 includes a first oil passage 81 arranged inside the wheel disc 1, and an oil outlet 84 is opened inside each gear tooth 2. A second oil passage 83 is connected to one side of the oil outlet 84. The end of the second oil passage 83 away from the oil outlet 84 is connected to the first oil passage 81. An oil filling port 82 is provided on the outside of the first oil passage 81. The oil filling port 82 is used to facilitate the input of lubricating oil into the first oil passage 81. The lubricating oil can enter the inside of each second oil passage 83 through the first oil passage 81, and then be evenly distributed on the outside of the gear teeth 2 through each oil outlet 84. This reduces the friction between the gear teeth 2 and avoids large matching errors between gears caused by excessive wear of the gear teeth 2.

[0027] The protective component 5 includes a reinforcing layer 51 arranged on the outside of the gear tooth 2, and the reinforcing layer 51 is made of alloy steel material. A wear-resistant layer 52 is arranged on the outside of the reinforcing layer 51, and the wear-resistant layer 52 is made of chrome-plated material. By arranging the reinforcing layer 51 and the wear-resistant layer 52, the gear tooth 2 is replaced by direct contact with the driving gear, thereby increasing the wear resistance and reducing the friction speed of the gear tooth 2.

[0028] Working principle: First, the heat generated by the wheel disc 1 and the gear teeth 2 during operation is transferred to the inside of the heat conducting plate 73 through the heat dissipation groove 75 by using the second annular seat 71 and the second fixed cylinder 72. The heat dissipation hole 74 will increase the contact area between the heat conducting plate 73 and the external air. When the wheel disc 1 and the gear teeth 2 are rotated by the driving gear, the external air will take away the heat inside the heat conducting plate 73 through the heat dissipation hole 74, so that the temperature of the wheel disc 1 and the gear teeth 2 is kept constant, avoiding the reduction of accuracy and increase of matching error caused by thermal deformation of the wheel disc 1 and the gear teeth 2 due to excessive temperature. Then, the lubricating oil is input into the first oil channel 81 by using the oil filling port 82, and the lubricating oil is input into each oil outlet 84 through the first oil channel 81 and the second oil channel 83. In this way, the lubricating oil is evenly distributed on the outside of the gear teeth 2, reducing the friction between the gear teeth 2, avoiding the large matching error between the gears caused by excessive wear of the gear teeth 2, and thus ensuring a low error state between the transmission gear and the driving gear.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] 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 low-error transmission gear, comprising a wheel disc (1), a plurality of gear teeth (2) symmetrically mounted on the outer side of the wheel disc (1), a first fixing cylinder (4) being arranged at the center of one side of the wheel disc (1), characterized in that: Also includes: A heat dissipation component (7) is arranged on both sides of the wheel disc (1) for quickly dissipating the working heat of the gear teeth (2); a connecting component (6) is arranged on the outer side of the first fixing cylinder (4) for facilitating quick assembly with the wheel disc (1); and a limiting component (3) is arranged at one end of the first fixing cylinder (4) for preventing the connecting component (6) from being separated from the wheel disc (1); A lubrication component (8) is arranged inside the wheel disc (1) to reduce the friction force on the outer side of the gear teeth (2), and a protection component (5) is arranged on the outer wall of the gear teeth (2) to increase the overall wear resistance of the wheel disc (1).

2. A low error transmission gear according to claim 1, characterized in that: The heat dissipation assembly (7) comprises a second annular seat (71) arranged on the outside of the wheel disc (1); a second fixed cylinder (72) is coaxially fixedly connected to one side of the second annular seat (71); a plurality of heat conduction plates (73) are symmetrically arranged on the outside of the second fixed cylinder (72); the heat conduction plates (73) are fixedly mounted on the second annular seat (71); a heat dissipation groove (75) corresponding to the heat conduction plate (73) is opened on the outside of the wheel disc (1); one side of the heat conduction plate (73) is located inside the heat dissipation groove (75); and a plurality of heat dissipation holes (74) are symmetrically opened on the other side of the heat conduction plate (73).

3. A low error transmission gear according to claim 1, characterized in that: The connecting assembly (6) comprises a keyway (63) arranged on the inner wall of the first fixed cylinder (4); a plurality of limit blocks (61) are symmetrically mounted on the outer side of the first fixed cylinder (4); a limit groove (62) corresponding to the limit block (61) is opened on the inner wall of the wheel disc (1); and the limit block (61) is located inside the limit groove (62).

4. A low error transmission gear according to claim 1, characterized in that: The limiting assembly (3) comprises a first annular seat (32) arranged at one end of a first fixed cylinder (4); a docking block (31) is fixedly connected to one side of the first annular seat (32); a docking groove (33) corresponding to the docking block (31) is provided at a port at one end of the first fixed cylinder (4); and the docking block (31) is located inside the docking groove (33).

5. The low error transmission gear according to claim 1, characterized in that: The lubrication assembly (8) comprises a first oil passage (81) arranged inside the wheel disc (1), an oil outlet (84) is provided inside each gear tooth (2), one side of the oil outlet (84) is connected to a second oil passage (83), an end of the second oil passage (83) away from the oil outlet (84) is connected to the first oil passage (81), and an oil filling port (82) is provided on the outside of the first oil passage (81).

6. The low error transmission gear according to claim 1, characterized in that: The protection component (5) comprises a reinforcement layer (51) arranged on the outside of the gear tooth (2), the reinforcement layer (51) being made of alloy steel material, and a wear-resistant layer (52) being arranged on the outside of the reinforcement layer (51), the wear-resistant layer (52) being made of chrome-plated material.

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