Metal gear for speed reducer

Abstract

The metal gear for the speed reducer comprises a rotating shaft, the upper end of the rotating shaft is fixedly connected with a limiting disc, a guide sleeve is fixedly connected between the top of the limiting disc and the surface of the rotating shaft, and a gear body is movably connected between the outer surface of the guide sleeve and the top of the limiting disc. And a cross rod is movably connected between the lower end of the guide sleeve and the lower end of the gear body. Through the arrangement of the clamping grooves, the gear teeth can be contained, through the arrangement of the pin holes and the pin rods, the gear body and the gear teeth can be effectively locked and limited, the gear teeth are prevented from being loosened from the upper portion of the gear body in the using process, and the stability of connection and use between the gear teeth and the gear body is guaranteed; and through arrangement of a limiting disc, a fixing sleeve and a locking bolt, the gear body, the guide sleeve and the rotating shaft can be effectively limited and fixed, and the gear body is effectively prevented from shaking in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of gears, in particular to a metal gear for a speed reducer. Background Art

[0002] A speed reducer is generally used in transmission equipment with low speed and high torque. For a speed reducer of an ordinary motor, several pairs of gears with the same principle are also used to achieve an ideal speed reduction effect. The ratio of the number of teeth of the large gear to the small gear is the transmission ratio. With the continuous development of the speed reducer industry, more and more enterprises are using speed reducers. At present, most of the existing speed reducers are powered by metal gears. Due to the characteristics of the stiffness of the metal gear material, during the meshing and force-bearing of metal gears, the teeth on the surface are often worn and damaged. Once wear occurs, the entire gear often needs to be replaced, increasing the cost of personnel maintenance. Content of the Utility Model

[0003] The purpose of the utility model is to provide a metal gear for a speed reducer, which has the advantages of facilitating personnel to replace corresponding parts when the teeth of the gear are damaged, and effectively reducing the maintenance cost.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A metal gear for a speed reducer, including a rotating shaft, the upper end of the rotating shaft is fixedly connected with a limiting disc, a guiding sleeve is fixedly connected between the top of the limiting disc and the surface of the rotating shaft, a gear body is movably connected between the outer surface of the guiding sleeve and the top of the limiting disc, a cross bar is movably connected between the lower end of the guiding sleeve and the lower end of the gear body, an annular cavity is opened in the middle of the gear body, a clamping groove is opened on the surface of the gear body, a tooth is movably connected to the surface of the clamping groove, a pin hole is opened at the upper end of the tooth, a pin rod is movably connected between the surface of the pin hole and the upper end of the gear body, a vertical plate is fixedly connected between the surface of the pin rod and the surface of the cross bar, a support spring is fixedly connected between the middle of the vertical plate and the surface of the annular cavity, a fixing sleeve is movably connected between the upper end of the outer surface of the guiding sleeve and the surface of the rotating shaft, the bottom of the fixing sleeve is fixedly connected to the middle of the top of the gear body, and locking bolts are threadedly connected between the upper ends of both sides of the fixing sleeve and both sides of the rotating shaft.

[0005] As a preferred solution, reinforcing rods are fixedly connected to the four circumferences of the bottom of the limiting disc, and the lower ends of the reinforcing rods are fixedly connected to the middle of the rotating shaft.

[0006] As a preferred solution, positioning holes are opened on the four circumferences of the limiting disc, positioning blocks are fixedly connected to the four circumferences of the bottom of the gear body, and the surface of the positioning blocks is movably connected to the surface of the positioning holes.

[0007] As a preferred solution, a guide rod is fixedly connected to the lower end of the annular cavity, and the lower end of the vertical plate is movably connected to the surface of the guide rod.

[0008] As a preferred solution, a reinforcing ring is fixedly connected to the top of the gear body, and reinforcing ribs are fixedly connected between the surface of the reinforcing ring and the top of the gear body.

[0009] As a preferred solution, the tooth includes a steel base layer, a tungsten carbide metal coating, and a polytetrafluoroethylene coating, and the surface of the tungsten carbide metal coating is coated on the surface of the steel base layer.

[0010] As a preferred solution, the surface of the polytetrafluoroethylene coating is coated on the surface of the tungsten carbide metal coating, and the thickness of the polytetrafluoroethylene coating is equal to the thickness of the tungsten carbide metal coating.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. Through the setting of the clamping groove, the present utility model can accommodate the tooth. Through the setting of the pin hole and the pin rod, effective locking and limiting can be carried out between the gear body and the tooth, preventing the tooth from loosening from the upper part of the gear body during use, ensuring the stability of the connection and use between the tooth and the gear body. And through the setting of the limiting disc, the fixing sleeve, and the locking bolt, effective limiting and fixing can be carried out between the gear body, the guiding sleeve, and the rotating shaft, effectively preventing the gear body from shaking during use. Through the setting of the locking bolt, the fixing sleeve, the rotating shaft, the gear body, the guiding sleeve, the cross bar, the supporting spring, the vertical plate, the cross bar, the pin rod, and the pin hole, it is convenient for personnel to take out and replace the tooth from the inside of the clamping groove. The overall operation is convenient and fast, improving the efficiency of personnel maintenance work, and effectively avoiding the need to replace the gear body when the tooth is damaged, effectively reducing the cost of maintenance work, and being beneficial for personnel to use.

[0013] 2. Through the setting of the reinforcing rod, the connection strength between the limiting disc and the rotating shaft is effectively improved. Through the setting of the positioning hole and the positioning block, the purpose of effectively positioning the gear body is achieved, ensuring that the gear body, the limiting disc, and the rotating shaft can rotate synchronously. Through the setting of the guide rod, the purpose of guiding the vertical plate is achieved, preventing the vertical plate from tilting during movement. Through the setting of the reinforcing ring and the reinforcing ribs, the purpose of strengthening the top of the gear body is achieved. Through the setting of the tungsten carbide metal coating and the polytetrafluoroethylene coating, the wear resistance of the tooth surface is effectively improved, reducing the probability of wear of the tooth during use, and improving the service life of the tooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional view of the present utility model;

[0015] Figure 2 This is a perspective three-dimensional view of another angle of the present utility model;

[0016] Figure 3 This is a schematic diagram of the front sectional structure of the gear body of the present utility model;

[0017] Figure 4 This is a schematic diagram of the top sectional structure of the gear body of the present utility model;

[0018] Figure 5 This is a schematic diagram of the tooth structure of the present utility model.

[0019] In the figure: 1. Gear body; 2. Rotating shaft; 3. Teeth; 301. Polytetrafluoroethylene coating; 302. Tungsten carbide metal coating; 303. Steel base layer; 4. Clamping groove; 5. Reinforcing rib; 6. Reinforcing ring; 7. Locking bolt; 8. Fixed sleeve; 9. Positioning hole; 10. Reinforcing rod; 11. Positioning block; 12. Limiting disc; 13. Annular cavity; 14. Guide sleeve; 15. Pin rod; 16. Pin hole; 17. Cross bar; 18. Guide rod; 19. Vertical plate; 20. Support spring. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments.

[0022] Embodiment 1:

[0023] Please refer to Figures 1-4As shown in the figure, the present utility model provides a metal gear for a speed reducer, including a rotating shaft 2. The upper end of the rotating shaft 2 is fixedly connected with a limiting disk 12. A guide sleeve 14 is fixedly connected between the top of the limiting disk 12 and the surface of the rotating shaft 2. A gear body 1 is movably connected between the outer surface of the guide sleeve 14 and the top of the limiting disk 12. A cross bar 17 is movably connected between the lower end of the guide sleeve 14 and the lower end of the gear body 1. An annular cavity 13 is formed in the middle of the gear body 1. A clamping groove 4 is formed on the surface of the gear body 1. A tooth 3 is movably connected to the surface of the clamping groove 4. A pin hole 16 is formed at the upper end of the tooth 3. A pin rod 15 is movably connected between the surface of the pin hole 16 and the upper end of the gear body 1. A vertical plate 19 is fixedly connected between the surface of the pin rod 15 and the surface of the cross bar 17. A support spring 20 is fixedly connected between the middle of the vertical plate 19 and the surface of the annular cavity 13. A fixing sleeve 8 is movably connected between the upper end of the outer surface of the guide sleeve 14 and the surface of the rotating shaft 2. The bottom of the fixing sleeve 8 is fixedly connected to the middle of the top of the gear body 1. Locking bolts 7 are threadedly connected between the upper ends of both sides of the fixing sleeve 8 and both sides of the rotating shaft 2.

[0024] In this technical solution, through the setting of the clamping groove 4, the tooth 3 can be accommodated. Through the setting of the pin hole 16 and the pin rod 15, effective locking and limiting can be carried out between the gear body 1 and the tooth 3, preventing the tooth 3 from loosening from the upper part of the gear body 1 during use, ensuring the stability of the connection and use between the tooth 3 and the gear body 1. And through the setting of the limiting disk 12, the fixing sleeve 8 and the locking bolts 7, effective limiting and fixing can be carried out between the gear body 1, the guide sleeve 14 and the rotating shaft 2, effectively preventing the gear body 1 from shaking during use. Through the setting of the locking bolts 7, the fixing sleeve 8, the rotating shaft 2, the gear body 1, the guide sleeve 14, the cross bar 17, the support spring 20, the vertical plate 19, the cross bar 17, the pin rod 15 and the pin hole 16, it is convenient for personnel to take out and replace the tooth 3 from the inside of the clamping groove 4. The overall operation is convenient and fast, improving the efficiency of personnel maintenance work, and effectively avoiding the need to replace the gear body 1 when the tooth 3 is damaged, effectively reducing the cost of maintenance work and being beneficial for personnel to use.

[0025] Embodiment Two:

[0026] On the basis of Embodiment One, the present utility model is as Figures 1-5As shown, reinforcing rods 10 are fixedly connected to the four peripheries of the bottom of the limit disc 12. The lower ends of the reinforcing rods 10 are fixedly connected to the middle part of the rotating shaft 2. Positioning holes 9 are formed in the four peripheries of the limit disc 12. Positioning blocks 11 are fixedly connected to the four peripheries of the bottom of the gear body 1. The surface of the positioning block 11 is movably connected to the surface of the positioning hole 9. A guide rod 18 is fixedly connected to the lower end of the annular cavity 13. The lower end of the vertical plate 19 is movably connected to the surface of the guide rod 18. A reinforcing ring 6 is fixedly connected to the top of the gear body 1. Reinforcing ribs 5 are fixedly connected between the surface of the reinforcing ring 6 and the top of the gear body 1. The tooth 3 includes a steel base layer 303, a tungsten carbide metal coating 302 and a polytetrafluoroethylene coating 301. The surface of the tungsten carbide metal coating 302 is coated on the surface of the steel base layer 303. The surface of the polytetrafluoroethylene coating 301 is coated on the surface of the tungsten carbide metal coating 302. The thickness of the polytetrafluoroethylene coating 301 is equal to the thickness of the tungsten carbide metal coating 302.

[0027] In this technical solution, through the setting of the reinforcing rod 10, the connection strength between the limit disc 12 and the rotating shaft 2 is effectively improved. Through the setting of the positioning hole 9 and the positioning block 11, the purpose of effectively positioning the gear body 1 is achieved, ensuring that the gear body 1, the limit disc 12 and the rotating shaft 2 can rotate synchronously. Through the setting of the guide rod 18, the purpose of guiding the vertical plate 19 is achieved, preventing the vertical plate 19 from tilting during the movement. Through the setting of the reinforcing ring 6 and the reinforcing ribs 5, the purpose of strengthening the top of the gear body 1 is achieved. Through the setting of the tungsten carbide metal coating 302 and the polytetrafluoroethylene coating 301, the wear resistance of the surface of the tooth 3 is effectively improved, reducing the probability of wear of the tooth 3 during use and increasing the service life of the tooth 3.

[0028] The working principle of the present utility model is as follows: Through the setting of the clamping groove 4, the tooth 3 can be accommodated. Through the setting of the pin hole 16 and the pin rod 15, effective locking and limiting can be carried out between the gear body 1 and the tooth 3, preventing the tooth 3 from loosening from above the gear body 1 during use, ensuring the stability of the connection and use between the tooth 3 and the gear body 1. And through the setting of the limiting disc 12, the fixing sleeve 8 and the locking bolt 7, effective limiting and fixing can be carried out between the gear body 1, the guide sleeve 14 and the rotating shaft 2, effectively preventing the gear body 1 from shaking during use. And when the tooth 3 is damaged and needs to be replaced, after removing the locking bolt 7 from between the fixing sleeve 8 and the rotating shaft 2, by pulling the gear body 1 to move upward along the surface of the guide sleeve 14 and taking it off from the surface of the guide sleeve 14, the movement of the gear body 1 can drive the cross bar 17 to move. Under the action of the movement, the cross bar 17 can contact the inclined surface of the guide sleeve 14, and under the action of the pre-tensioned tensile force of the support spring 20, it can pull the vertical plate 19, the cross bar 17 and the pin rod 15 to move until the surface of the pin rod 15 can be separated from the surface of the pin hole 16. Then the personnel can take out and replace the tooth 3 from the inside of the clamping groove 4. The overall operation is convenient and fast, improving the efficiency of the personnel's maintenance work, and effectively avoiding the need to replace the gear body 1 when the tooth 3 is damaged, effectively reducing the cost of the maintenance work and being beneficial for the personnel to use.

[0029] Importantly, it should be noted that the construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible on the premise of substantially not deviating from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various components, and parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature, number or position of discrete elements can be changed or altered. Therefore, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structure that performs the recited function herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0030] In addition, to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described (i.e., those features that are not relevant to the currently considered best mode of implementing the present utility model or those features that are not relevant to implementing the present utility model).

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.

Claims

1. A metal gear for a speed reducer, comprising a rotating shaft (2), characterized in that: The upper end of the rotating shaft (2) is fixedly connected to a limit plate (12); a guide sleeve (14) is fixedly connected between the top of the limit plate (12) and the surface of the rotating shaft (2); a gear body (1) is movably connected between the outer surface of the guide sleeve (14) and the top of the limit plate (12); a cross bar (17) is movably connected between the lower end of the guide sleeve (14) and the lower end of the gear body (1); an annular cavity (13) is provided at the middle end of the gear body (1); a clamping groove (4) is provided on the surface of the gear body (1); a tooth (3) is movably connected to the surface of the clamping groove (4); a pin hole (17) is provided at the upper end of the tooth (3) 16), a pin rod (15) is movably connected between the surface of the pin hole (16) and the upper end of the gear body (1), a vertical plate (19) is fixedly connected between the surface of the pin rod (15) and the surface of the cross bar (17), a supporting spring (20) is fixedly connected between the middle end of the vertical plate (19) and the surface of the annular cavity (13), a fixing sleeve (8) is movably connected between the upper end of the outer surface of the guide sleeve (14) and the surface of the rotating shaft (2), the bottom of the fixing sleeve (8) is fixedly connected to the middle end of the top of the gear body (1), and locking bolts (7) are threadedly connected between the upper ends of both sides of the fixing sleeve (8) and both sides of the rotating shaft (2).

2. A metal gear for a speed reducer according to claim 1, characterized in that: The bottom of the limiting plate (12) is fixedly connected to reinforcing rods (10) on all sides thereof, and the lower end of the reinforcing rod (10) is fixedly connected to the middle end of the rotating shaft (2).

3. The metal gear for a speed reducer according to claim 1, characterized in that: The limiting plate (12) is provided with positioning holes (9) on all sides, and the bottom of the gear body (1) is fixedly connected with positioning blocks (11) on all sides, and the surface of the positioning block (11) is movably connected to the surface of the positioning hole (9).

4. The metal gear for a speed reducer according to claim 1, characterized in that: The lower end of the annular cavity (13) is fixedly connected to a guide rod (18), and the lower end of the vertical plate (19) is movably connected to the surface of the guide rod (18).

5. The metal gear for a speed reducer according to claim 1, characterized in that: A reinforcement ring (6) is fixedly connected to the top of the gear body (1), and a reinforcement rib (5) is fixedly connected between the surface of the reinforcement ring (6) and the top of the gear body (1).

6. The metal gear for a speed reducer according to claim 1, characterized in that: The tooth (3) comprises a steel base layer (303), a tungsten carbide metal coating (302) and a polytetrafluoroethylene coating (301), and the surface of the tungsten carbide metal coating (302) is coated on the surface of the steel base layer (303).

7. The metal gear for a speed reducer according to claim 6, characterized in that: The surface of the polytetrafluoroethylene coating (301) is coated on the surface of the tungsten carbide metal coating (302), and the thickness of the polytetrafluoroethylene coating (301) is equal to the thickness of the tungsten carbide metal coating (302).

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