Novel worm shaft structure
By setting an adjustable first and second worm teeth structure on the worm shaft, the problem of overall scrapping and gear ratio fixation after worm shaft wear is solved, and the practical performance and cost reduction of the worm shaft are improved.
Patent Information
- Application Number
- CN202422362153.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The worm tooth structure on the existing worm shaft can only be scrapped as a whole after wear, and the transmission ratio cannot be changed, resulting in waste of materials and high cost replacement.
The first worm tooth structure and the second worm tooth structure are arranged on the shaft body, and the adjustable position of the worm tooth is achieved through bolt fixing and elastic positioning mechanisms, allowing the transmission worm tooth to be selected as needed, and switching to the use of another worm tooth when one worm tooth is worn.
The practical performance improvement of the worm shaft is achieved, avoiding overall scrapping caused by wear, reducing replacement costs and flexibly adjusting the transmission ratio.
Smart Images
Figure CN223215702U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of worms, in particular to a novel worm shaft structure. Background Art
[0002] Nowadays, the worm shaft often has only one worm tooth structure, and the worm tooth structure is often integrated with the shaft body. With long-term operation, the worm tooth structure will continue to wear. Once it can no longer transmit normally with the worm wheel, the worm shaft as a whole can only be scrapped, which will result in a huge waste of materials. Moreover, since the existing worm shaft has only one worm tooth structure, the transmission ratio between it and the worm wheel is also fixed. When the transmission ratio needs to be changed, the worm shaft and worm wheel can only be replaced as a whole, which will greatly increase the cost. Therefore, in order to solve the above problems, it is particularly important to design a new worm shaft structure. Summary of the Invention
[0003] In order to solve the above problems, the utility model designs a new worm shaft structure, in which a first worm gear structure and a second worm gear are provided on the shaft body. During operation, the corresponding worm gear can be selected for transmission according to the required transmission ratio. Moreover, once one of the worm gears is worn and cannot transmit, the other worm gear can be used to continue working, thereby increasing practical performance.
[0004] In order to solve the above-mentioned technical problems, the utility model provides a new worm shaft structure, which is characterized in that it includes a shaft body and a first worm gear structure, the first worm gear structure is adjustably mounted on the shaft body, the first worm gear structure is composed of a cover body, a first mounting part, a worm gear part and a second mounting part connected together from left to right, the first mounting part and the second mounting part are both fixed to the shaft body by bolts, a threaded connection hole for connecting the bolts is provided on the shaft body, an elastic positioning mechanism is also provided between the first mounting part and the shaft body, the shaft body is also connected to a second worm gear through a keyway structure, the second worm gear can be blocked by the cover body, and the end of the shaft body extending out of the cover body is also connected to a tooth transmission part, and the tooth transmission part is integrated with the shaft body.
[0005] Further: Four threaded connection holes are provided on the shaft from left to right, and the four threaded connection holes are arranged in a straight line. The four first threaded connection holes are respectively the first threaded connection hole, the second threaded connection hole, the third threaded connection hole and the fourth threaded connection hole from left to right. The spacing from the first threaded connection hole to the third threaded connection hole and the spacing from the second threaded connection hole to the fourth threaded connection hole are box-shaped. When the first mounting part and the second mounting part are connected to the first threaded connection hole and the third first threaded connection hole, the cover body is sleeved on the outside of the second worm gear and aligned to block it. When the first mounting part and the second mounting part are connected to the second threaded connection hole and the fourth threaded connection hole, the second worm gear is exposed on the outside of the cover body.
[0006] Furthermore: the elastic positioning mechanism includes a hemispherical slot opened on the outer wall of the shaft body, a groove opened on the inner wall of the first mounting part, a spherical clamp and a spring. Two hemispherical slots are opened on the outer wall of the shaft body. The positions of the two hemispherical slots respectively match the positions of the first threaded connection hole and the third threaded connection hole. The spherical clamp is connected to the groove through a spring, and the spherical clamp is clamped into the hemispherical slot under the action of the spring.
[0007] Furthermore: a positioning ring is provided on the shaft between the tooth transmission part and the second worm gear, and the positioning ring is connected to the shaft as a whole.
[0008] After adopting the above structure, the utility model is provided with a first worm gear structure and a second worm gear on the shaft body. During operation, the corresponding worm gear can be selected for transmission according to the required transmission ratio. Moreover, once one of the worm gears is worn and cannot transmit, the other worm gear can be used to continue working, which increases practical performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0010] Figure 1 It is a schematic diagram of the cross-sectional structure of the present utility model.
[0011] Figure 2 for Figure 1 A magnified view of the middle panel. DETAILED DESCRIPTION
[0012] like Figure 1A novel worm shaft structure is shown, comprising a shaft body 1-1 and a first worm gear structure, the first worm gear structure being positionally adjustable and mounted on the shaft body. The first worm gear structure is composed, from left to right, of a cover portion 2-4, a first mounting portion 2-3, a worm gear portion 2-2, and a second mounting portion 2-1, which are connected integrally. The first mounting portion and the second mounting portion are both fixed to the shaft body by bolts. The shaft body is provided with a threaded connection hole 4 for connecting the bolts. An elastic positioning mechanism is also provided between the first mounting portion and the shaft body. The shaft body is further connected to a second worm gear 7 via a keyway structure, and the second worm gear can be shielded by the cover portion. The end of the shaft body extending out of the cover portion is further connected to a tooth transmission portion 1-3, which is integrally connected to the shaft body. The utility model is provided with a first worm gear structure and a second worm gear on the shaft body. During operation, the corresponding worm gear can be selected for transmission according to the required transmission ratio. Moreover, if one of the worm gears wears out and cannot transmit, the other worm gear can continue to operate, thereby increasing practical performance.
[0013] like Figure 1 Four threaded connection holes are provided on the shaft body from left to right, and the four threaded connection holes are arranged in a straight line. The four first threaded connection holes are respectively the first threaded connection hole, the second threaded connection hole, the third threaded connection hole and the fourth threaded connection hole from left to right. The spacing from the first threaded connection hole to the third threaded connection hole and the spacing from the second threaded connection hole to the fourth threaded connection hole are box-shaped. When the first mounting part and the second mounting part are connected to the first threaded connection hole and the third first threaded connection hole, the cover body is sleeved on the outside of the second worm gear and aligned to block it. When the first mounting part and the second mounting part are connected to the second threaded connection hole and the fourth threaded connection hole, the second worm gear is exposed on the outside of the cover body.
[0014] like Figure 1 and Figure 2 The elastic positioning mechanism includes a hemispherical groove opened on the outer wall of the shaft body, a groove opened on the inner wall of the first mounting part, a spherical clamp 6 and a spring 5. Two hemispherical grooves are opened on the outer wall of the shaft body. The positions of the two hemispherical grooves match the positions of the first threaded connection hole and the third threaded connection hole respectively. The spherical clamp is connected to the groove through a spring, and the spherical clamp is clamped into the hemispherical groove under the action of the spring.
[0015] like Figure 1 A positioning ring 1 - 2 is provided on the shaft between the tooth transmission part and the second worm gear, and the positioning ring is connected to the shaft as a whole.
[0016] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.
Claims
1. A new worm shaft structure, characterized by: The invention comprises a shaft body (1-1) and a first worm gear structure, wherein the position of the first worm gear structure is adjustable and mounted on the shaft body. The first worm gear structure is composed of a cover body (2-4), a first mounting part (2-3), a worm gear part (2-2) and a second mounting part (2-1) connected together from left to right. The first mounting part and the second mounting part are both fixed to the shaft body by bolts. The shaft body is provided with a threaded connection hole (4) for connecting the bolts. An elastic positioning mechanism is also provided between the first mounting part and the shaft body. The shaft body is also connected to a second worm gear (7) through a keyway structure. The second worm gear can be shielded by the cover body. The end of the shaft body extending out of the cover body is also connected to a tooth transmission part (1-3). The tooth transmission part is connected to the shaft body as a whole.
2. A novel worm shaft structure according to claim 1, characterized in that: Four threaded connection holes are provided on the shaft from left to right, and the four threaded connection holes are arranged in a straight line. The four first threaded connection holes are respectively the first threaded connection hole, the second threaded connection hole, the third threaded connection hole and the fourth threaded connection hole from left to right. The spacing from the first threaded connection hole to the third threaded connection hole and the spacing from the second threaded connection hole to the fourth threaded connection hole are box-shaped. When the first mounting portion and the second mounting portion are connected to the first threaded connection hole and the third first threaded connection hole, the cover body is sleeved on the outside of the second worm gear and aligned to block it. When the first mounting portion and the second mounting portion are connected to the second threaded connection hole and the fourth threaded connection hole, the second worm gear is exposed on the outside of the cover body.
3. A novel worm shaft structure according to claim 2, characterized in that: The elastic positioning mechanism comprises a hemispherical slot provided on the outer wall of the shaft body, a groove provided on the inner wall of the first mounting portion, a spherical clamp (6) and a spring (5). Two hemispherical slots are provided on the outer wall of the shaft body. The positions of the two hemispherical slots respectively match the positions of the first threaded connection hole and the third threaded connection hole. The spherical clamp is connected to the groove via a spring. The spherical clamp is clamped into the hemispherical slot under the action of the spring.
4. The novel worm shaft structure according to claim 1, characterized in that: A positioning ring (1-2) is provided on the shaft between the tooth transmission part and the second worm gear, and the positioning ring is connected to the shaft as a whole.