Helical gear transmission device with long service life
By improving the structure of the helical gear transmission device and adopting a sealed enclosure and lubrication design, the problems of poor sealing and dust intrusion were solved, thus extending the service life of the helical gears.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2026-03-31
AI Technical Summary
The mounting base of the existing helical gear transmission device requires drilling holes at the bottom to install the seated bearing. The seals are prone to aging and oil leakage, resulting in poor sealing and dust entry, which leads to a shortened service life.
The system employs a combination structure consisting of a mounting base, a U-shaped groove, a first sealing plate, a second sealing plate, a seated bearing, a first drive shaft, a second drive shaft, a first helical gear, a second helical gear, and a gearbox. Combined with deep groove ball bearings and dustproof components, it achieves a sealed enclosure of the helical gear, and adds lubricant to the U-shaped groove to reduce dust intrusion.
It improves the lubrication efficiency of helical gears, reduces the contact area with the environment, extends the service life of helical gears, and improves sealing by inverting the mounted bearings and dustproof components to prevent dust from entering.
Smart Images
Figure CN224064809U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of helical gear transmission technology, and in particular to a helical gear transmission device with a long service life. Background Technology
[0002] To overcome the shortcomings of spur gear drives, helical gear drive technology emerged. The tooth surface of a helical gear is helical, with a certain angle between its tooth line and the gear axis, known as the helix angle. This unique structure allows the teeth to gradually enter and exit the mesh during engagement, resulting in a smoother meshing process and significantly reduced impact and noise.
[0003] However, in existing helical gear transmission devices, the bottom of the mounting base needs to be drilled to install the seated bearing. After a long service life, the seals age and are prone to oil leakage. In addition, an oil collection box needs to be installed. Moreover, the mounting base has an open structure with poor sealing, allowing dust to easily enter and cause damage to the helical gear, greatly reducing its service life. Utility Model Content
[0004] The purpose of this utility model is to propose a helical gear transmission device with a long service life, which solves the problems of existing helical gear transmission devices, such as the need to drill holes at the bottom of the mounting base to install bearings, long service life, aging of seals, easy oil leakage, the need to install an additional oil collection box, poor sealing of the mounting base, easy entry of dust, damage to the helical gears, and a greatly reduced service life.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A helical gear transmission device with long service life includes a mounting base, a first sealing plate, a second sealing plate, a bearing with a mounting seat, a first transmission shaft, a second transmission shaft, a first helical gear, a second helical gear, and a gearbox;
[0007] The gearbox is mounted on the top of the mounting base, the second drive shaft is rotatably mounted on the gearbox, the second drive shaft is equipped with the second helical gear, and the second helical gear is located inside the gearbox;
[0008] The mounting base is provided with a U-shaped groove, the bearing with a seat is inverted and mounted on the mounting base, the first drive shaft is rotatably mounted on the bearing with a seat, the first drive shaft is equipped with the first helical gear, the first helical gear meshes with the second helical gear, and the first helical gear and the first drive shaft are respectively located in the U-shaped groove;
[0009] The first sealing plate is installed at one end of the mounting base, and the second sealing plate is installed at the other end of the mounting base.
[0010] Furthermore, it also includes deep groove ball bearings, with the deep groove ball bearings installed at both ends of the gearbox, the second drive shaft being installed in the gearbox via the two deep groove ball bearings, and the second helical gear being located between the two deep groove ball bearings.
[0011] Specifically, it also includes a dustproof component, which is mounted on the top of the mounting base and is attached to the rear side of the gearbox.
[0012] Preferably, the dustproof assembly includes a sealing gland and a dustproof cover;
[0013] The sealing cap is installed on the top surface of the mounting base, and the sealing cap is directly opposite the first drive shaft. The dust cover is installed on the sealing cap and is attached to the rear side of the gearbox.
[0014] In some embodiments, the dust cover has a hollow structure.
[0015] Furthermore, the sealing cap has a first mounting hole at each of its left and right ends, and the dust cover has a second mounting hole at each of its left and right ends, with the second mounting hole directly opposite the first mounting hole.
[0016] Specifically, the mounting base has a plurality of third mounting holes on its front side, and the plurality of third mounting holes are evenly spaced along the outer periphery of the U-shaped groove. The first sealing plate has a plurality of fourth mounting holes, and the plurality of fourth mounting holes are corresponding to the plurality of third mounting holes.
[0017] Compared with the prior art, one of the above technical solutions has the following beneficial effects:
[0018] The mounting base, U-shaped groove, first sealing plate, second sealing plate, mounted bearing, first drive shaft, second drive shaft, first helical gear, second helical gear, and gearbox form a relatively sealed enclosure for the first and second helical gears. Lubricant is added to the U-shaped groove, immersing the first helical gear in it, which increases lubrication efficiency and reduces the contact area between the helical gear and the environment, thereby reducing the space for dust intrusion and greatly improving the service life of the helical gear. Furthermore, the mounted bearing is installed inverted, which does not require damaging the overall structure of the mounting base and changes the traditional structure that requires drilling holes and adding sealing gaskets at the bottom of the mounting base for installation. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the helical gear transmission device according to one embodiment of the present invention;
[0020] Figure 2 This is a schematic diagram of the structure of the U-shaped groove according to one embodiment of the present invention;
[0021] Figure 3 This is a schematic diagram of the structure of a dustproof component according to one embodiment of the present invention;
[0022] The components include: mounting base 1, U-shaped groove 11, third mounting hole 12, first sealing plate 2, fourth mounting hole 21, bearing with seat 3, first drive shaft 4, second drive shaft 5, first helical gear 6, second helical gear 7, gearbox 8, deep groove ball bearing 9, dustproof assembly 10, sealing cover 101, first mounting hole 1011, dust cover 102, and second mounting hole 1021. Detailed Implementation
[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "inner side," "outer side," "inner end," "outer end," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis. In the description of this utility model, unless otherwise stated, "multiple" means two or more.
[0025] In one embodiment of this utility model, such as Figure 1-3As shown, a long-service-life helical gear transmission device includes a mounting base 1, a first sealing plate 2, a second sealing plate, a bearing with a mounting seat 3, a first transmission shaft 4, a second transmission shaft 5, a first helical gear 6, a second helical gear 7, and a gearbox 8. The gearbox 8 is mounted on the top of the mounting base 1, and the second transmission shaft 4 is rotatably mounted on the gearbox 8. The second transmission shaft 4 is equipped with the second helical gear 7, which is located inside the gearbox 8. The mounting base 1 is provided with a U-shaped groove 11. The bearing with a mounting seat 3 is inverted and mounted on the mounting base 1. The first transmission shaft 4 is rotatably mounted on the bearing with a mounting seat 3. The first transmission shaft 4 is equipped with the first helical gear 6, which meshes with the second helical gear 7. The first helical gear 6 and the first transmission shaft 4 are respectively located within the U-shaped groove 11. The first sealing plate 2 is mounted on one end of the mounting base 1, and the second sealing plate is mounted on the other end of the mounting base 1.In this embodiment, the mounting base 1 is machined from a one-piece cast U-shaped profile. The length of the mounting base 1 can be designed according to the actual number of transmissions required. That is, the first transmission shaft 4 can be equipped with multiple first helical gears 6, and the number of second transmission shafts 5, second helical gears 7, and gearboxes 8 can be increased accordingly. During installation, the mounting base 1 is provided with the U-shaped groove 11. The seated bearing 3 is inverted and installed on the mounting base 1, so that the bearing of the seated bearing 3 is located in the U-shaped groove 11, that is, the bearing of the seated bearing 3 is coaxially arranged with the U-shaped groove 11. Then, one end of the first transmission shaft 4 is installed on the seated bearing 3 to facilitate connection with the U-shaped groove 11. An external motor is connected. The first helical gear 6 is installed at the other end of the first drive shaft 4, and the second helical gear 7 is installed at the second drive shaft 5. One end of the second drive shaft 5 is installed inside the gearbox 8, so that the second helical gear 7 is located inside the gearbox 8, while the other end of the second drive shaft 5 protrudes outside the gearbox 8. A rod clamp is installed at the other end of the second drive shaft 5 for connection with a rod. Then, the gearbox 8 is installed on the mounting base 1, so that the second helical gear 7 meshes with the first helical gear 6. Finally, the first sealing plate 2 is installed on the front end of the mounting base 1. The second sealing plate is installed at the rear end of the mounting base 1. The second sealing plate is located behind the bearing 3. The second sealing plate has a corresponding clearance hole for the first drive shaft 4 to pass through. Lubricating fluid is added into the U-shaped groove 11. The first sealing plate 2 and the second sealing plate act as a seal to prevent lubricating fluid leakage. During operation, an external motor drives the first drive shaft 4 to rotate. The first drive shaft 4 drives the second drive shaft 5 to rotate through the first helical gear 6 and the second helical gear 7, thereby causing the rod clamp to drive the rod to rotate, thus realizing transmission. This application uses the mounting base 1, U-shaped groove 11, first sealing plate 2, and second sealing plate 11 to achieve transmission. The mounting plate, the seated bearing 3, the first drive shaft 4, the second drive shaft 5, the first helical gear 6, the second helical gear 7, and the gearbox 8 are arranged so that the first helical gear 6 and the second helical gear 7 are relatively sealed and enclosed by the mounting base 1 and the gearbox 8. Lubricating fluid is added to the U-shaped groove 11 so that the first helical gear 6 is immersed in the lubricating fluid, which increases the lubrication efficiency and reduces the contact area between the helical gear and the environment, thereby reducing the space where dust can enter and greatly improving the service life of the helical gear. Furthermore, the seated bearing 3 is installed in reverse, which does not require damaging the overall structure of the mounting base 1 and changes the traditional structure that requires opening a hole at the bottom of the mounting base 1 and adding a sealing gasket for installation.
[0026] like Figure 1-3As shown, the gearbox 8 also includes deep groove ball bearings 9. The deep groove ball bearings 9 are respectively installed at both ends of the gearbox 8. The second drive shaft 5 is mounted to the gearbox 8 via two deep groove ball bearings 9, and the second helical gear 7 is located between the two deep groove ball bearings 9. In this embodiment, the deep groove ball bearings 9 are respectively installed at both the left and right ends of each gearbox 8. Each second drive shaft 5 is mounted to the gearbox 8 via two deep groove ball bearings 9, and the second helical gear 7 mounted on the second drive shaft 5 is located between the two deep groove ball bearings 9. Through this design, the second drive shaft 5 experiences more uniform force, resulting in smoother transmission.
[0027] like Figure 1-3 As shown, it also includes a dustproof component 10, which is installed on the top of the mounting base 1 and fits against the rear side of the gearbox 8. In this embodiment, the first drive shaft 4 is equipped with two first helical gears 6, and the top surface of the mounting base 1 is equipped with two gearboxes 8. Each gearbox 8 is equipped with a corresponding second drive shaft 5 and a second helical gear 7. After the gearboxes 8 are installed on the top of the mounting base 1, due to the space spacing required by the roller clamp, there is a certain gap between adjacent gearboxes 8 and between gearboxes 8 and bearing 3. The gearboxes 8 do not completely cover the first drive shaft 4, leaving a part of the meshing area of the first drive shaft 4 and the two helical gears exposed. Therefore, the dustproof component 10 is added in this area to improve the sealing performance, reduce the contact area between the first drive shaft 4, the first helical gear 6 and the second helical gear 7 and the outside world, and avoid contamination by dust or debris.
[0028] like Figure 1-3 As shown, the dustproof assembly 10 includes a sealing cap 101 and a dust cover 102. The sealing cap 101 is installed on the top surface of the mounting base 1, directly opposite the first drive shaft 4. The dust cover 102 is installed on the sealing cap 101 and fits against the rear side of the gearbox 8. In this embodiment, during installation, the sealing cap 101 is first installed on the top surface of the mounting base 1 to cover the first drive shaft 4. Then, the dust cover 102 is installed on the top surface of the sealing cap 101, with its front and rear sides fitting against adjacent gearboxes 8. The dust cover 102 adjacent to the bearing 3 also provides some dust protection, thereby improving its dustproof performance.
[0029] like Figure 3 As shown, the dust cover 102 has a hollow structure. In this embodiment, setting the dust cover 102 as a hollow structure not only reduces its weight and the load on the mounting base 1, but also saves materials and reduces production costs.
[0030] like Figure 2-3 As shown, the sealing cap 101 has first mounting holes 1011 at its left and right ends, and the dust cover 102 has second mounting holes 1021 at its left and right ends, with the second mounting holes 1021 directly opposite the first mounting holes 1011. In this embodiment, during installation, the sealing cap 101 is placed on the top surface of the mounting base 1, with the two first mounting holes 1011 directly opposite the installation position of the mounting base 1. Then, the dust cover 102 is placed on the top surface of the sealing cap 101, with the second mounting holes 1021 directly opposite the first mounting holes 1011. Finally, the two are locked and fixed to the mounting base 1 with locking screws, which is convenient and quick.
[0031] like Figure 1-2 As shown, the mounting base 1 has multiple third mounting holes 12 on its front side, which are evenly spaced along the outer periphery of the U-shaped groove 11. The first sealing plate 2 has multiple fourth mounting holes 21, which are corresponding to the multiple third mounting holes 12. In this embodiment, the number of third mounting holes 12 and fourth mounting holes 21 are seven each. Three third mounting holes 12 are provided on each of the left and right sides of the U-shaped groove 11, and one third mounting hole 12 is provided at the bottom of the U-shaped groove 11. This design ensures the sealing performance of the first sealing plate 2 and prevents it from tilting or warping during installation. During installation, the seven fourth mounting holes 21 of the first sealing plate 2 are aligned with the seven third mounting holes 12, and then it is fixed with locking screws.
[0032] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0033] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A long-life helical gear drive, characterized by: The mounting seat, the first sealing plate, the second sealing plate, the bearing with seat, the first transmission shaft, the second transmission shaft, the first helical gear, the second helical gear and the gear box are included. The gear box is installed on the top of the mounting seat, and the second transmission shaft is rotatably installed on the gear box. The mounting seat is provided with a U-shaped groove, the bearing with seat is installed upside down on the mounting seat, and the first transmission shaft is rotatably installed on the bearing with seat. The first sealing plate is installed on one end of the mounting seat, and the second sealing plate is installed on the other end of the mounting seat.
2. A long life helical gear drive according to claim 1 wherein: The gear box is provided with deep groove ball bearings at both ends, the second transmission shaft is installed on the gear box through the two deep groove ball bearings, and the second helical gear is located between the two deep groove ball bearings.
3. A long life helical gear drive according to claim 1 wherein: The dustproof assembly is installed on the top of the mounting seat and is attached to the rear side of the gear box.
4. A long life helical gear drive according to claim 3 wherein: The dustproof assembly includes a sealing gland and a dust cover. The sealing gland is installed on the top surface of the mounting seat, the dust cover is installed on the sealing gland, and the dust cover is attached to the rear side of the gear box.
5. A long life helical gear drive according to claim 4 wherein: The dust cover is a hollow structure.
6. A long life helical gear drive according to claim 4 wherein: The left and right ends of the sealing gland are respectively provided with first installation holes, and the left and right ends of the dust cover are respectively provided with second installation holes.
7. A long life helical gear drive according to claim 1 wherein: The front surface of the mounting seat is provided with a plurality of third installation holes, the plurality of third installation holes are uniformly arranged along the outer periphery of the U-shaped groove, the first sealing plate is provided with a plurality of fourth installation holes, and the plurality of fourth installation holes are correspondingly arranged with the plurality of third installation holes.