Double-layer gear

Abstract

The utility model discloses a double-layer type gear which comprises a first gear normal plane, a cylindrical worm and first gear teeth, the cylindrical worm is composed of two cylindrical stainless steel pipes with different radiuses, the upper portion of the cylindrical worm is the cylindrical stainless steel pipe with the small radius, the upper portion of the cylindrical worm is the cylindrical stainless steel pipe with the large radius, and the first gear teeth are arranged on the first gear normal plane. The double-layer gear is composed of an upper gear and a lower gear, the upper gear is a gear with a small radius (comprising a second gear normal plane, second gear teeth and a tooth groove), the second gear normal plane and the second gear teeth on the outer edge are integrally welded and formed, and the lower gear is a gear with a large radius (comprising a first gear normal plane, first gear teeth and a tooth groove). The normal plane of the first gear and the first gear teeth on the outer edge are integrally welded and formed, the two gears are fixed to the upper position and the lower position of the cylindrical worm, the upper radius and the lower radius of the cylindrical worm are different, the two gears can be tightly clamped, and therefore the two gears are effectively driven to coaxially rotate through rotation of the cylindrical worm.

Description

Technical Field

[0001] The utility model relates to the technical field related to gears, in particular to a double-layer gear. Background Art

[0002] Gears refer to mechanical components with gears on the wheel rim that continuously mesh to transmit motion and power. Gears have been used in transmission for a long time. At the end of the 19th century, the principle of gear cutting and the special machine tools and tools that use this principle to cut gears appeared one after another. With the development of production, the smoothness of gear operation has been paid attention to. Gears can be classified according to tooth shape, gear shape, tooth line shape, surface where the gear teeth are located, and manufacturing method. The tooth shape of gears includes tooth profile curve, pressure angle, tooth height and displacement. Involute gears are relatively easy to manufacture, so involute gears account for the absolute majority of gears used in modern times, while cycloidal gears and circular arc gears are less used.

[0003] The existing gear set has the problem that the worm in the center of the gear cannot tightly engage the two gears, and is prone to looseness between the two gears, which drives the two gears to rotate for a long time. In addition, the traditional gear set is prone to rust and the transmission efficiency is low. Therefore, the utility model proposes a double-layer gear to solve the above problems. Summary of the invention

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

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-layer gear, including a first gear normal surface, a cylindrical worm and a first gear tooth, the center of the first gear normal surface is fixedly connected to the bottom of the cylindrical worm, the top of the cylindrical worm is rotatably connected to the inner ring of the shell bearing, the top of the cylindrical worm is fixedly connected to the center of the second gear normal surface, and the outer edge of the first gear normal surface is welded to the first gear tooth.

[0006] Preferably, the outer ring of the clamp shell bearing is welded to the second gear clamp shell, and the cylindrical worm passes through the second gear normal surface and is rotatably connected to the clamp shell bearing.

[0007] Preferably, a threaded through hole is provided on the second gear clamping shell, and the second gear clamping shell is screwed to the upper part of the first gear clamping shell through a positioning screw.

[0008] Preferably, the edge of the second gear housing is glued to the oil filling pipe, the interior of the first gear housing is rotatably connected to the normal surface of the first gear, and the positioning screws are installed at the four corners of the second gear housing.

[0009] Preferably, a rubber oil plug is provided at one end of the oil filling tube, and the other end of the oil filling tube is inserted into the connection between the normal surface of the first gear and the cylindrical worm.

[0010] Preferably, the outer edge of the second gear normal surface is welded to the second gear tooth, and the second gear normal surface and the first gear normal surface are located on the same axis and rotate coaxially.

[0011] Preferably, the second gear teeth outside the normal surface of the second gear protrude outside the edge of the second gear housing, and the second gear teeth gap is provided with a tooth groove.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model uses the interaction of the first gear normal surface, the cylindrical worm, the second gear normal surface, the second gear teeth, the tooth groove and the first gear teeth. The cylindrical worm is composed of two cylindrical stainless steel tubes with inconsistent radii. The upper part of the cylindrical worm is a cylindrical stainless steel tube with a smaller radius, and the upper part of the cylindrical worm is a cylindrical stainless steel tube with a larger radius. The upper part of the cylindrical worm is engaged with the center of the second gear normal surface, and the lower part of the cylindrical worm is engaged with the center of the first gear normal surface. The double-layer gear is composed of two upper and lower gears. The upper gear is a gear with a small radius (including the second gear normal surface, the second gear teeth and the tooth groove), and the second gear normal surface is welded with the second gear teeth on the outer edge as a whole. The lower gear is a gear with a large radius (including the first gear normal surface, the first gear teeth and the tooth groove), and the first gear normal surface is welded with the first gear teeth on the outer edge as a whole. The two gears are fixed at the upper and lower positions of the cylindrical worm. The upper and lower radii of the cylindrical worm are inconsistent, which is conducive to the close engagement of the two gears, so that the two gears are effectively driven to rotate coaxially through the rotation of the cylindrical worm.

[0014] 2. The utility model utilizes the mutual cooperation of the first gear housing, the first gear normal surface, the second gear housing, the positioning screw, the housing bearing, the threaded through hole and the first gear tooth. The first gear housing is provided on the outside of the gear above the cylindrical worm, and the second gear housing is provided on the outside of the gear below the cylindrical worm. The first gear housing is fixedly connected to the second gear housing by the positioning screw. The second gear teeth on the edge of the normal surface of the second gear protrude from the outside of the second gear housing, so that the gear above the cylindrical worm can mesh with the external gear through the second gear teeth. Similarly, the first gear teeth on the edge of the normal surface of the first gear protrude from the outside of the first gear housing, so that the gear below the cylindrical worm can mesh with the external gear through the first gear teeth. The provision of the first gear housing and the second gear housing is beneficial to protecting the gear above the cylindrical worm, avoiding rusting of the gear due to external dust particles and impurities, affecting the rotation efficiency, and improving the practicality of the device.

[0015] 3. The utility model cooperates with each other through the oil filling pipe, the rubber oil plug, the second gear clamp housing and the cylindrical worm. The edge of the second gear clamp housing is glued to the oil filling pipe, and a rubber oil plug is provided at one end of the oil filling pipe. The other end of the oil filling pipe is inserted into the junction of the cylindrical worm, the first gear normal surface and the second gear normal surface. When the cylindrical worm drives the first gear normal surface and the second gear normal surface to rotate for a long time, oil is injected through the oil filling pipe to improve the lubrication between the first gear normal surface and the second gear normal surface, thereby improving the rotation of the gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural diagram of the gear of the utility model;

[0017] Figure 2 This is a cross-sectional view of the internal structure of the gear device;

[0018] Figure 3 This is the cross-sectional view of the left half of the gear structure;

[0019] In the figure: the first gear housing 1, the first gear normal surface 2, the cylindrical worm 3, the second gear housing 4, the positioning screw 5, the second gear normal surface 6, the second gear tooth 7, the oil filling pipe 8, the rubber oil plug 9, the housing bearing 10, the threaded through hole 11, the tooth groove 12, and the first gear tooth 13. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-3 The utility model provides a technical solution: a double-layer gear, including a first gear normal surface 2, a cylindrical worm 3 and a first gear tooth 13, the center of the first gear normal surface 2 is fixedly connected to the bottom of the cylindrical worm 3, the top of the cylindrical worm 3 is rotatably connected to the inner ring of the clamp shell bearing 10, the top of the cylindrical worm 3 is fixedly connected to the center of the second gear normal surface 6, and the outer edge of the first gear normal surface 2 is welded to the first gear tooth 13.

[0022] Furthermore, the outer ring of the clamp shell bearing 10 is welded to the second gear clamp shell 4, and the cylindrical worm 3 is rotatably connected to the clamp shell bearing 10 through the second gear normal surface 6, so that the second gear clamp shell 4 is fixed to the top of the cylindrical worm 3 through the clamp shell bearing 10, thereby improving practicality.

[0023] Furthermore, a threaded through hole 11 is provided on the second gear housing 4, and the second gear housing 4 is screwed to the upper side of the first gear housing 1 through a positioning screw 5, so as to effectively fix the first gear housing 1 and the second gear housing 4, thereby protecting the internal gears.

[0024] Furthermore, the edge of the second gear housing 4 is glued to the oil filling pipe 8, the interior of the first gear housing 1 is rotatably connected to the first gear normal surface 2, and the positioning screws 5 are installed at the four corners of the second gear housing 4 to improve the connection firmness between the second gear housing 4 and the first gear housing 1.

[0025] Furthermore, a rubber oil plug 9 is provided at one end of the oil filling pipe 8, and the other end of the oil filling pipe 8 is inserted into the connection between the first gear normal surface 2 and the cylindrical worm 3. When the cylindrical worm 3 drives the first gear normal surface 2 and the second gear normal surface 6 to rotate for a long time, oil is injected through the oil filling pipe 8 to improve the lubrication between the first gear normal surface 2 and the second gear normal surface 6, thereby improving the rotation of the gears.

[0026] Furthermore, the outer edge of the second gear normal surface 6 is welded to the second gear tooth 7, and the second gear normal surface 6 and the first gear normal surface 2 are located on the same axis and rotate coaxially, which is convenient for rotation through the cylindrical worm 3, effectively driving the two gears to rotate coaxially.

[0027] Furthermore, the second gear teeth 7 outside the second gear normal surface 6 protrude outside the edge of the second gear clamp housing 4, and a tooth groove 12 is provided in the gap of the second gear teeth 7. In this device, the second gear teeth 7 on the edge of the second gear normal surface 6 protrude outside the second gear clamp housing 4, so that the gear above the cylindrical worm 3 can mesh with the external gear through the second gear teeth 7.

[0028] Working principle: First, the cylindrical worm 3 of the utility model is composed of two cylindrical stainless steel tubes with inconsistent radii, the upper part of the cylindrical worm 3 is a cylindrical stainless steel tube with a smaller radius, and the upper part of the cylindrical worm 3 is a cylindrical stainless steel tube with a larger radius. The upper part of the cylindrical worm 3 is connected by a center snap fit with the second gear normal surface 6, and the lower part of the cylindrical worm 3 is connected by a center snap fit with the first gear normal surface 2. The double-layer gear is composed of two upper and lower gears, the upper gear is a gear with a small radius (including the second gear normal surface 6, the second gear teeth 7 and the tooth groove 12), the second gear normal surface 6 and the second gear teeth 7 on the outer edge are welded as a whole, and the lower gear is a gear with a large radius (including the first gear normal surface 2, the first gear teeth 13 and the tooth groove 12), the first gear normal surface 2 and the first gear teeth 13 on the outer edge are welded as a whole, and the two gears are fixed at the upper and lower positions of the cylindrical worm 3, and the upper and lower radii of the cylindrical worm 3 are inconsistent. It is conducive to tightly engaging the two gears, thereby rotating the cylindrical worm 3 and effectively driving the two gears to rotate coaxially; secondly, a first gear clamping shell 1 is provided on the outside of the gear above the cylindrical worm 3, and a second gear clamping shell 4 is provided on the outside of the gear below the cylindrical worm 3. The first gear clamping shell 1 is fixedly connected to the second gear clamping shell 4 by a positioning screw 5, and the second gear teeth 7 on the edge of the second gear normal surface 6 protrude from the outside of the second gear clamping shell 4, which is convenient for the gear above the cylindrical worm 3 to mesh with the external gear through the second gear teeth 7. Similarly, the first gear teeth 13 on the edge of the first gear normal surface 2 protrude from the outside of the first gear clamping shell 1, which is convenient for the gear below the cylindrical worm 3 to mesh with the external gear through the first gear teeth 13. The provision of the first gear clamping shell 1 and the second gear clamping shell 4 is conducive to protecting the gear above the cylindrical worm 3, avoiding rusting of the gear due to external dust particles and impurities, affecting the rotation efficiency, and improving the practicality of the device.

[0029] 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 double-layer gear, comprising a first gear normal surface (2), a cylindrical worm (3) and a first gear tooth (13), characterized in that: The center of the first gear surface (2) is fixedly connected to the bottom of the cylindrical worm (3), the top of the cylindrical worm (3) is rotatably connected to the inner ring of the clamp shell bearing (10), the top of the cylindrical worm (3) is fixedly connected to the center of the second gear surface (6), and the outer edge of the first gear surface (2) is welded to the first gear tooth (13).

2. A double-layer gear according to claim 1, characterized in that: The outer ring of the clamp shell bearing (10) is welded to the second gear clamp shell (4), and the cylindrical worm (3) passes through the second gear normal surface (6) and is rotationally connected to the clamp shell bearing (10).

3. A double-layer gear according to claim 2, characterized in that: The second gear clamping shell (4) is provided with a threaded through hole (11), and the second gear clamping shell (4) is screw-connected to the upper portion of the first gear clamping shell (1) via a positioning screw (5).

4. A double-layer gear according to claim 3, characterized in that: The edge of the second gear clamping shell (4) is glued to the oil filling pipe (8), the interior of the first gear clamping shell (1) is rotatably connected to the first gear normal surface (2), and the positioning screws (5) are installed at the four corners of the second gear clamping shell (4).

5. A double-layer gear according to claim 4, characterized in that: One end of the oil filling pipe (8) is provided with a rubber oil plug (9), and the other end of the oil filling pipe (8) is inserted into the connection between the first gear normal surface (2) and the cylindrical worm (3).

6. A double-layer gear according to claim 1, characterized in that: The outer edge of the second gear normal surface (6) is welded to the second gear tooth (7), and the second gear normal surface (6) and the first gear normal surface (2) are located on the same axis and rotate coaxially.

7. A double-layer gear according to claim 6, characterized in that: The second gear teeth (7) outside the second gear normal surface (6) protrude outside the edge of the second gear clamping housing (4), and the gaps between the second gear teeth (7) are provided with tooth grooves (12).

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