Gear set with overload protection function

Abstract

The utility model provides a gear set with an overload protection function, and belongs to the technical field of gears. A gear set with overload protection comprises a gear and a gear shaft, a limiting rotary disc is fixed to one side of the gear shaft, the limiting rotary disc is located in the gear and rotates in the gear, and a limiting assembly is arranged in the gear; the overload protection strength can be adjusted by arranging the pressurizing knob, when overload protection is not needed, only the pressurizing knob needs to be completely tightened, the limiting pins can be completely clamped in the limiting grooves, at the moment, the gear shaft drives the gear to rotate without overload protection, and the overload protection strength is adjusted. When overload protection is needed, a part of the pressurizing knob can be loosened, so that the baffle and the limiting pin have a certain displacement amount, and when the gear reaches the load limit, the limiting pin and the baffle move to avoid the possibility that the gear is damaged.

Description

Technical Field

[0001] The utility model belongs to the field of gears, and in particular relates to a gear set with overload protection. Background Art

[0002] The gear set is composed of reducers, gears, rolling bearings, sliding bearings and other parts that need lubrication, as well as some other parts. Improving the lubrication efficiency of these parts will improve production safety and increase the life of equipment, reduce labor intensity and improve the economic benefits of the enterprise.

[0003] Gear transmission is the most commonly used transmission mechanism in mechanical transmission. However, in gear transmission, overload often causes gear damage or motor burnout, resulting in damage to the equipment. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and provides a gear set with overload protection.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a gear set with overload protection, comprising a gear and a gear shaft, characterized in that: a limit rotating disk is fixed on one side of the gear shaft, the limit rotating disk is located inside the gear, the limit rotating disk rotates inside the gear, and a limit assembly is provided inside the gear;

[0006] The limiting assembly includes at least two limiting pins. A pressure knob is detachably provided on the end face of the gear away from the gear shaft. A baffle is connected to the side of the pressure knob close to the gear shaft through a pressure spring, and the baffle is in contact with the limiting pin.

[0007] Optionally, at least two limiting grooves are formed on an end surface of the limiting turntable away from the gear shaft, the limiting pins abut against the limiting grooves, and the number of the limiting grooves is at least twice the number of the limiting pins.

[0008] Optionally, a limiting cavity is provided on an end surface of the gear away from the gear shaft, the baffle moves in the limiting cavity, and an inner wall of the limiting cavity is provided with an internal thread.

[0009] Optionally, the pressurizing knob is threadedly connected to the gear, and a side of the pressurizing knob away from the gear is provided with an anti-slip protrusion.

[0010] Optionally, the side of the limiting pin close to the limiting turntable is spherical, and the limiting groove is also hemispherical.

[0011] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. Due to the setting of the limit assembly, the overload protection strength can be adjusted by setting the pressure knob. When overload protection is not required, just tighten the pressure knob completely to make the limit pin completely stuck in the limit groove. At this time, the gear shaft drives the gear to rotate without overload protection. When overload protection is required, part of the pressure knob can be loosened to make the baffle and the limit pin have a certain displacement, so that when the gear reaches the load limit, the limit pin and the baffle will move to avoid the possibility of gear damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the utility model.

[0014] Figure 2 It is a cross-sectional view of the utility model.

[0015] 10. Gear; 11. Gear shaft; 12. Pressurizing knob; 13. Limiting turntable; 14. Limiting groove; 15. Limiting cavity; 16. Limiting pin; 17. Baffle; 18. Pressure spring. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention.

[0017] As shown in FIG1-2, a gear set with overload protection includes a gear 10 and a gear shaft 11, characterized in that: a limit turntable 13 is fixed on one side of the gear shaft 11, the limit turntable 13 is located inside the gear 10, the limit turntable 13 rotates inside the gear 10, and a limit assembly is provided inside the gear 10;

[0018] The limiting assembly includes at least two limiting pins 16. A pressure knob 12 is detachably provided on the end face of the gear 10 away from the gear shaft 11. The pressure knob 12 is threadedly connected to the gear 10. A non-slip protrusion is provided on the side of the pressure knob 12 away from the gear 10. A baffle 17 is connected to the side of the pressure knob 12 close to the gear shaft 11 through a pressure spring 18. The baffle 17 is abutted against the limiting pin 16. A limiting cavity 15 is provided on the end face of the gear 10 away from the gear shaft 11. The baffle 17 moves in the limiting cavity 15, and an inner thread is provided on the inner wall of the limiting cavity 15.

[0019] At least two limit grooves 14 are formed on the end surface of the limit turntable 13 away from the gear shaft 11, and the limit pins 16 abut against the limit grooves 14, and the number of the limit grooves 14 is at least twice the number of the limit pins 16. The side of the limit pin 16 close to the limit turntable 13 is spherical, and the limit grooves 14 are also hemispherical.

[0020] When in use, when overload protection is not needed, it is necessary to rotate the pressure knob 12 to completely squeeze the pressure spring 18, so that the baffle 17 abuts against the limit pin 16 in the limit groove 14, so that the limit pin 16 is stuck in the limit groove 14. At this time, the gear shaft 11 rotates to drive the gear 10 to rotate. When overload protection is needed, the pressure knob 12 is rotated in the opposite direction to loosen the pressure spring 18 slightly, so that the baffle 17 can slide in the limit cavity 15, and with the help of the elastic force of the pressure spring 18, the baffle 17 squeezes the limit pin 16 to move forward. When the gear 10 is overloaded, the load on the gear shaft 11 is large, so the spherical limit groove 14 will drive the limit pin 16 to move away from the gear shaft 11, thereby driving the baffle 17 to squeeze the spring to move towards the pressure knob 12. At this time, the limit pin 16 cannot continue to clamp the limit turntable 13 under the overload condition, so that the gear shaft 11 cannot continue to drive the gear 10 to rotate. At this time, the gear 10 can be protected from possible damage under overload condition.

[0021] Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A gear set with overload protection, comprising a gear (10) and a gear shaft (11), characterized in that: A limit rotating disk (13) is fixed on one side of the gear shaft (11), the limit rotating disk (13) is located inside the gear (10), the limit rotating disk (13) rotates inside the gear (10), and a limit assembly is provided inside the gear (10); The limiting assembly comprises at least two limiting pins (16); a pressure knob (12) is detachably provided on the end surface of the gear (10) away from the gear shaft (11); a baffle (17) is connected to the side of the pressure knob (12) close to the gear shaft (11) via a pressure spring (18); and the baffle (17) is in contact with the limiting pin (16).

2. A gear set with overload protection according to claim 1, characterized in that: At least two limiting grooves (14) are formed on an end surface of the limiting rotating disk (13) away from the gear shaft (11), the limiting pins (16) abut against the limiting grooves (14), and the number of the limiting grooves (14) is at least twice the number of the limiting pins (16).

3. A gear set with overload protection according to claim 1, characterized in that: A limiting cavity (15) is provided on the end surface of one side of the gear (10) away from the gear shaft (11), the baffle (17) moves in the limiting cavity (15), and the inner wall of the limiting cavity (15) is provided with an internal thread.

4. A gear set with overload protection according to claim 1, characterized in that: The pressurizing knob (12) is threadedly connected to the gear (10), and a side of the pressurizing knob (12) away from the gear (10) is provided with an anti-slip protrusion.

5. A gear set with overload protection according to claim 2, characterized in that: The side of the limiting pin (16) close to the limiting rotating disk (13) is spherical, and the limiting groove (14) is also hemispherical.

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