Output gear overload protection mechanism

Abstract

The utility model discloses an output gear overload protection mechanism which comprises an output gear installation piece and a clutch gear frame, one end of the output gear installation piece is provided with a clutch connecting end, a plurality of first clutch grooves are formed in the plane of one end of the clutch connecting end at intervals, and a plurality of second clutch clamping jaws are arranged on the edge of the clutch connecting end at intervals. A plurality of elastic first clutch protrusions are arranged on one end face of the clutch gear frame at intervals, and a plurality of second clutch grooves in interference fit with the second clutch clamping jaws are formed in the edge of the clutch gear frame at intervals. The first clutch protrusion is matched with the first clutch groove, and the second clutch clamping jaw is matched with the second clutch groove. According to the utility model, the output part can be automatically and instantly separated from and combined with the gear set under the condition of strong external force, elastic adjustment is carried out, the effect of protecting the gear is achieved, the structure is simple, and the cost is low.

Description

Technical Field

[0001] The utility model relates to an output gear transmission protection mechanism, in particular to an output gear overload protection mechanism. Background Art

[0002] With the rapid development of the gear industry, overload protection mechanisms, as crucial components in gear transmission systems, have become increasingly important. Their performance and quality directly impact the lifespan of gear trains. When the output gear becomes stuck or encounters an obstacle for various reasons, the overload protection mechanism protects the gear from damage through its design. Specifically, the overload protection mechanism disconnects the output unit from the transmission system by disengaging the power transmission point, thus preventing damage to the gears caused by forced operation.

[0003] The commonly used overload protection mechanisms on the market are:

[0004] 1. Mechanical overload protection clutch: Features: It mainly relies on mechanical structures such as springs and levers to achieve the engagement and disengagement of the clutch, and its structure is relatively simple. Disadvantage: The spring takes up a lot of space.

[0005] 2. Hydraulic overload protection clutch: Features: The clutch engages and disengages through a hydraulic system, offering high performance stability and reliability. It primarily consists of a friction plate, pressure plate, and diaphragm spring. Disadvantage: The hydraulic system is expensive. Summary of the Invention

[0006] In order to overcome the shortcomings and deficiencies of the prior art, the present invention aims to provide an output gear overload protection mechanism that prevents damage to the gear caused by momentary force impact torque. Furthermore, the small size of the components of this structure can better save space, and the structure is simple and easy to assemble, thereby saving costs.

[0007] The purpose of the utility model is achieved through the following technical solutions: an output gear overload protection mechanism, comprising an output gear mounting member and a clutch gear frame, one end of the output gear mounting member is provided with a clutch connecting end, a plurality of first clutch grooves are provided at intervals on one end plane of the clutch connecting end, a plurality of second clutch claws are provided at intervals on the edge of the clutch connecting end, a plurality of elastic first clutch protrusions are provided at intervals on one end surface of the clutch gear frame, a plurality of second clutch grooves that are interference fit with the second clutch claws are provided at intervals on the edge of the clutch gear frame, and the first clutch protrusions are fitted with the first clutch grooves.

[0008] As an improvement to the output gear overload protection mechanism of the present invention, the first clutch groove and the first clutch protrusion are both hemispherical.

[0009] As an improvement to the output gear overload protection mechanism of the present invention, each of the second clutch claws is provided with a hook at the end, and each of the second clutch claws is provided with a semi-cylindrical protrusion on the inner side. The second clutch groove is semi-cylindrical, and the semi-cylindrical protrusion can be embedded in the second clutch groove. When the torque of the output gear mounting member in the forward or reverse rotation is greater than the resistance between the semi-cylindrical protrusion and the second clutch groove, the semi-cylindrical protrusion is separated from the second clutch groove.

[0010] As an improvement to the output gear overload protection mechanism of the present invention, a U-shaped hollow hole is provided on one end surface of the clutch gear rack at a position corresponding to each first clutch protrusion, and a spring sheet is provided on the side wall of the U-shaped hollow hole. Each first clutch protrusion is correspondingly arranged on one of the spring sheets. When the external force for rotating the output gear mounting member is greater than the resistance between the first clutch protrusion and the first clutch groove, the first clutch protrusion is separated from the first clutch groove.

[0011] As an improvement to the output gear overload protection mechanism of the present invention, a plurality of planetary gear mounting columns are spaced apart on the other end surface of the clutch gear rack, and a plurality of output gear mounting ridges are spaced apart on the outer side wall of the output gear mounting piece.

[0012] The beneficial effect of the utility model is that the utility model can automatically separate and combine with the gear set instantly when the output part is subjected to strong external force, and perform elastic adjustment, thereby achieving the effect of protecting the gear. At the same time, the structure is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded view of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the output gear mounting member of the utility model;

[0015] Figure 3 This is a schematic diagram of the clutch gear frame structure of the utility model;

[0016] Figure 4 It is the main view of the utility model;

[0017] Figure 5 yes Figure 4 Cross-sectional view of AA;

[0018] The accompanying drawings are marked as follows: 1. output gear mounting member, 2. clutch gear frame, 3. clutch connecting end, 4. first clutch groove, 5. second clutch claw, 6. first clutch protrusion, 7. second clutch groove, 8. U-shaped hollow hole, 9. spring piece, 10. planetary gear mounting column, 11. output gear mounting ridge, 51. hook, 52. semi-cylindrical protrusion. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0022] like Figure 1-Figure 5As shown, an output gear overload protection mechanism includes an output gear mounting member 1 and a clutch gear frame 2. A clutch connection end 3 is provided at one end of the output gear mounting member 1. A plurality of first clutch grooves 4 are spaced apart on the plane of one end of the clutch connection end 3. A plurality of second clutch claws 5 are spaced apart on the edge of the clutch connection end 3. A plurality of elastic first clutch protrusions 6 are spaced apart on one end surface of the clutch gear frame 2. A plurality of second clutch grooves 7 that are interference-fit with the second clutch claws 5 are spaced apart on the edge of the clutch gear frame 2. The first clutch protrusions 6 cooperate with the first clutch grooves 4 to form a first heavy clutch structure, and the second clutch claws 5 cooperate with the second clutch grooves 7 to form a second heavy clutch structure. This allows the output gear mounting member 1 to automatically and quickly separate and reassemble with the clutch gear frame 2 when subjected to strong external forces, performing self-adaptive elastic adjustment. When the output gear mounting member 1 stops rotating, the mating positions of the first heavy clutch device and the second heavy clutch device automatically reassemble, thereby protecting the gear from damage caused by momentary force impact and twisting.

[0023] In actual use, the size of the output force can be adjusted according to the balance between the output force that the gearbox itself can achieve and the force required in actual application. The size of the hemispherical shape or the size of the semi-cylindrical shape can be adjusted to adjust the bearing force of the clutch.

[0024] When a large external rotational force acts on the output gear mounting member 1 of the present invention, the first clutch protrusion 6 will quickly disengage from the first clutch groove 4 until the external force is lower than the clutch bearing capacity, and the first clutch protrusion 6 will then return to the first clutch groove 4, thereby protecting the entire gear set.

[0025] Preferably, the first clutch groove 4 and the first clutch protrusion 6 are both hemispherical.

[0026] Preferably, each second clutch claw 5 is provided with a hook portion 51 at the end thereof, and each second clutch claw 5 is provided with a semi-cylindrical protrusion 52 on the inner side thereof. The second clutch groove 7 is semi-cylindrical, and the semi-cylindrical protrusion 52 can be embedded in the second clutch groove 7. When the torque of the output gear mounting member 1 in the forward or reverse rotation is greater than the resistance between the semi-cylindrical protrusion 52 and the second clutch groove 7, the semi-cylindrical protrusion 52 and the second clutch groove 7 can be separated.

[0027] Preferably, a U-shaped hollow hole 8 is provided on one end surface of the clutch gear frame 2 at a position corresponding to each first clutch protrusion 6, and a spring piece 9 is provided on the side wall of the U-shaped hollow hole 8. Each first clutch protrusion 6 is correspondingly arranged on a spring piece 9. When the external force of rotating the output gear mounting member 1 is greater than the resistance between the first clutch protrusion 6 and the first clutch groove 4, the first clutch protrusion 6 is separated from the first clutch groove 4.

[0028] Preferably, a plurality of planetary gear mounting columns 10 are provided at intervals on the other end surface of the clutch gear frame 2 , and a plurality of output gear mounting ridges 11 are provided at intervals on the outer side wall of the output gear mounting member 1 .

[0029] The utility model also has the following advantages:

[0030] 1. The structure is simple. The utility model does not require metal parts such as springs for pressure connection. The output gear mounting member 1 and the clutch gear frame 2 can be connected by the buckle itself.

[0031] 2. Reduce costs. The utility model does not require metal parts such as springs, and no other additional devices, nor does it need to add other parts and corresponding assembly hours, so it can relatively reduce parts and processes, thereby reducing costs.

[0032] 3. Small size: the utility model does not require additional devices and requires little installation space.

[0033] 4. The sound will be softer and more even. Because the roller itself is elastic, the position of the overload protection mechanism is smooth and elastic and automatically adjusted, making it a flexible buffer during the rotation process, and the sound will be softer and more even.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and structure of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An output gear overload protection mechanism, comprising an output gear mounting member and a clutch gear frame, characterized in that: A clutch connection end is provided at one end of the output gear mounting member, a plurality of first clutch grooves are provided at intervals on a plane at one end of the clutch connection end, a plurality of second clutch claws are provided at intervals on an edge of the clutch connection end, a plurality of elastic first clutch protrusions are provided at intervals on one end surface of the clutch gear frame, a plurality of second clutch grooves that are interference fit with the second clutch claws are provided at intervals on the edge of the clutch gear frame, and the first clutch protrusions are fitted with the first clutch grooves.

2. The output gear overload protection mechanism according to claim 1, characterized in that: The first clutch groove and the first clutch protrusion are both hemispherical.

3. The output gear overload protection mechanism according to claim 1, characterized in that: Each of the second clutch claws is provided with a hook at the end thereof, and each of the inner side surfaces of the second clutch claws is provided with a semi-cylindrical protrusion. The second clutch groove is semi-cylindrical, and the semi-cylindrical protrusion can be embedded in the second clutch groove. When the torque of the output gear mounting member in the forward or reverse rotation is greater than the resistance between the semi-cylindrical protrusion and the second clutch groove, the semi-cylindrical protrusion separates from the second clutch groove.

4. The output gear overload protection mechanism according to claim 2, characterized in that: A U-shaped hollow hole is provided on one end surface of the clutch gear frame at a position corresponding to each first clutch protrusion, and a spring sheet is provided on the side wall of the U-shaped hollow hole. Each first clutch protrusion is correspondingly arranged on one of the spring sheets. When the external force for rotating the output gear mounting member is greater than the resistance between the first clutch protrusion and the first clutch groove, the first clutch protrusion is separated from the first clutch groove.

5. The output gear overload protection mechanism according to claim 1, characterized in that: A plurality of planetary gear mounting columns are provided at intervals on the other end surface of the clutch gear frame, and a plurality of output gear mounting ridges are provided at intervals on the outer side wall of the output gear mounting member.

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