阅读说明：本技术 一种大扭矩齿轮过扭保护器 (Large-torque gear over-twisting protector ) 是由 闫明祥 曹旭东 姜在赢 付冠平 于 2020-07-27 设计创作，主要内容包括：本发明公开了一种大扭矩齿轮过扭保护器,包括轴芯、配合键、离合器斜齿端、离合器连轴端、上碟簧、下碟簧、垫圈、挡圈,所述轴芯上开有键槽,键槽内镶嵌有配合键,所述轴芯上通过配合键配合连接着离合器连轴端,所述离合器连轴端上端对称配合有离合器斜齿端,所述离合器斜齿端套接在所述轴芯,所述离合器斜齿端、离合器连轴端上下两端卡接有上碟簧、下碟簧,所述上碟簧、下碟簧呈圆片状,所述上碟簧端设有垫圈,所述垫圈上层设有挡圈。本发明采用端面齿的斜面可以使离合器产出轴向力,轴向力大于两侧碟簧压力时,离合器可分开,实现电机空转,保护电机及齿面不受损伤。(The invention discloses a large-torque gear over-torque protector which comprises a shaft core, a matching key, a clutch bevel gear end, a clutch connecting shaft end, an upper disc spring, a lower disc spring, a gasket and a retainer ring, wherein the shaft core is provided with a key groove, the matching key is embedded in the key groove, the shaft core is connected with the clutch connecting shaft end in a matching way through the matching key, the upper end of the clutch connecting shaft end is symmetrically matched with the clutch bevel gear end, the clutch bevel gear end is sleeved on the shaft core, the upper disc spring and the lower disc spring are clamped at the upper end and the lower end of the clutch bevel gear end and the clutch connecting shaft end, the upper disc spring and the lower disc spring are in a circular sheet shape, the gasket is arranged at the upper disc spring end, and the retainer ring is arranged on the upper layer of the gasket. The invention adopts the inclined plane of the end face teeth to enable the clutch to generate axial force, and when the axial force is greater than the pressure of the disc springs on the two sides, the clutch can be separated, so that the idling of the motor is realized, and the motor and the tooth surface are protected from being damaged.)

1. The utility model provides a big moment of torsion gear is crossed turns round protector which characterized in that: comprises a shaft core (1), a matching key (2), a clutch bevel gear end (3), a clutch connecting shaft end (4), an upper disc spring (5), a lower disc spring (6), a gasket (7) and a retainer ring (8), a key groove is arranged on the shaft core (1), a matching key (2) is embedded in the key groove, the shaft core (1) is connected with a clutch connecting shaft end (4) in a matching way through a matching key (2), the upper end of the clutch connecting shaft end (4) is symmetrically matched with a clutch bevel gear end (3), the clutch bevel gear end (3) is sleeved on the shaft core (1), the upper and lower ends of the clutch bevel gear end (3) and the clutch connecting shaft end (4) are clamped with an upper disc spring (5) and a lower disc spring (6), the upper disc spring (5) and the lower disc spring (6) are in a disc shape, a gasket (7) is arranged at the end of the upper disc spring (5), and a retainer ring (8) is arranged on the upper layer of the gasket (7).

2. The protector for over-twisting of a high-torque gear according to claim 1, wherein the gasket (7) is directly sleeved on the shaft core (1), a ring-shaped fixing groove is formed on the circumferential surface of the shaft core (1) at the upper part of the gasket (7), and the retainer ring (8) is clamped and embedded in the fixing groove.

3. A high torque gear over-torque protector according to claim 1, characterized in that the retainer ring (8) is semi-circular in shape with a half-open ring.

4. The large-torque gear over-twisting protector as claimed in claim 1, wherein the bottoms of the two sides of the upper disc spring (5) and the lower disc spring (6) are arched outwards from the central position and are arranged at an angle with the horizontal bottom surfaces of the upper disc spring (5) and the lower disc spring (6).

5. The high-torque gear over-twisting protector as claimed in claim 4, wherein the center of the bottom end face of the lower disc spring (6) is directly clamped at the boss of the shaft core (1), and the upper end face of the lower disc spring is in contact with the lower end face of the clutch connecting shaft (4).

6. A high torque gear over-torque protector according to claim 4 wherein the bottom surface of the upper disc spring (5) is in direct contact with the upper end surface of the clutch skewed tooth end (3) and the centrally arched position of the upper end surface of the upper disc spring (5) is in direct contact with the washer (7).

7. A high-torque gear over-twisting protector as claimed in claim 5, wherein the circumference of the upper end face of the clutch connecting shaft end (4) is fixedly provided with saw teeth, and the saw teeth are curved teeth.

8. A high-torque gear over-twisting protector as claimed in claim 6, characterized in that the circumference of the lower end face of the clutch bevel gear end (3) is fixedly provided with saw teeth, and the saw teeth are curved teeth.

9. The protector for over-twisting of large-torque gear according to claim 7, wherein the curvature of the curved teeth formed on the upper end face of the clutch connecting shaft end (4) is matched with the curvature of the curved teeth formed on the lower end face of the clutch helical teeth end (3).

10. The high-torque gear over-twisting protector according to claim 9, wherein the plane of the curved crest on the clutch skewed tooth end (3) and the clutch connecting shaft end (4) is parallel to the radius of the clutch skewed tooth end (3) and the clutch connecting shaft end (4).

Technical Field

The invention relates to the technical field of gear equipment, in particular to a large-torque gear over-twisting protector.

Background

The structure of the existing magnetic drill is mainly characterized in that a straight gear and a helical gear are used as main components, different modes are adopted according to different designs, but no matter the working modes of the straight gear and the helical gear are adopted, mechanical over-torsion protection is not provided, the electric control is realized, specifically, the overcurrent protection is realized, when the output torque of a motor is overlarge, the current of the motor rises and the power is cut off, because the gear rotating at high speed generates inertia impact, the motor and the tooth surface are damaged, the service life is influenced, and meanwhile, the working efficiency is reduced.

In view of this, it is urgently needed to provide a structure of a large-torque gear over-twisting protector, so as to meet the requirements of engineering use, and a mechanical over-twisting protection is adopted, so that a motor and a working tooth surface are effectively protected.

Disclosure of Invention

The invention aims to provide a large-torque gear over-torsion protector which comprises a shaft core, a matching key, a clutch bevel gear end, a clutch connecting shaft end, an upper disc spring, a lower disc spring, a gasket and a retainer ring, wherein the shaft core is provided with a key groove, the key groove is internally embedded with the matching key, the shaft core is connected with the clutch connecting shaft end in a matching way through the matching key, the upper end of the clutch connecting shaft end is symmetrically matched with the clutch bevel gear end, the clutch bevel gear end is sleeved on the shaft core, the upper disc spring and the lower disc spring are clamped at the upper end and the lower end of the clutch connecting shaft end, the upper disc spring and the lower disc spring are in a circular sheet shape, the gasket is arranged at the upper disc spring end, and the retainer ring is arranged on the upper layer of the gasket.

Furthermore, the gasket is directly sleeved on the shaft core, an annular fixing groove is formed in the circumferential surface of the shaft core positioned at the upper part of the gasket, and a retainer ring is clamped and embedded in the fixing groove.

Further, the retainer ring is in a semi-circular shape with a semi-open ring.

Furthermore, the bottoms of the two sides of the upper disc spring and the lower disc spring are arched outwards from the central position and form an angle with the horizontal flat surfaces of the upper disc spring and the lower disc spring.

Furthermore, the center of the bottom end face of the lower disc spring is directly clamped at the boss of the shaft core, and the upper end face of the lower disc spring is in contact with the lower end face of the shaft end of the clutch.

Furthermore, the bottom surface of the upper disc spring is directly contacted with the upper end surface of the inclined tooth end of the clutch, and the center arching position of the upper end surface of the upper disc spring directly supports against the gasket.

Furthermore, sawteeth are fixedly arranged on the circumference of the upper end face of the connecting shaft end of the clutch, and the sawteeth are curved teeth.

Furthermore, the circumference of the lower end face of the clutch bevel gear end is fixedly provided with sawteeth, and the sawteeth are curved face teeth.

Furthermore, the curvature radian of the curved surface teeth arranged on the upper end surface of the clutch connecting shaft end is matched with the curvature radian of the curved surface teeth arranged on the lower end surface of the clutch skewed tooth end.

Furthermore, the plane where the curved surface tooth crest on the clutch skewed tooth end and the clutch connecting shaft end is located is parallel to the radius of the clutch skewed tooth end and the clutch connecting shaft end.

Compared with the prior art, the invention has the beneficial effects that: the invention adopts the inclined plane of the end face teeth to enable the clutch to generate axial force, and when the axial force is greater than the pressure of the disc springs on the two sides, the clutch can be separated, so that the idling of the motor is realized, and the motor and the tooth surface are protected from being damaged.

Drawings

FIG. 1 is a general schematic of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a perspective view of the clutch skewed tooth end of the present invention;

FIG. 4 is a plan view of the helical end of the clutch of the present invention;

FIG. 5 is a cross-sectional view of the invention A-A;

FIG. 6 is a partial enlarged view of the invention at I.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in fig. 1-6, a large-torque gear over-twisting protector comprises a shaft core 1, a matching key 2, a clutch helical tooth end 3, a clutch coupling end 4, an upper disc spring 5, a lower disc spring 6, a gasket 7 and a retainer ring 8, wherein a key groove is formed in the shaft core 1, the key groove is internally embedded with the matching key 2, the shaft core 1 is connected with the clutch coupling end 4 in a matching way through the matching key 2, the clutch helical tooth end 3 is symmetrically matched with the upper end of the clutch coupling end 4, the clutch helical tooth end 3 is sleeved on the shaft core 1, the upper disc spring 5 and the lower disc spring 6 are clamped at the upper end and the lower end of the clutch helical tooth end 3 and the clutch coupling end 4, the upper disc spring 5 and the lower disc spring 6 are in a disc shape, the gasket 7 is arranged at the end of the upper disc spring 5, and the retainer ring 8 is arranged at the upper layer of the gasket 7.

In this embodiment, the gasket 7 is directly sleeved on the shaft core 1, an annular fixing groove is formed on the circumferential surface of the shaft core 1 at the upper part of the gasket 7, and a retainer ring 8 is clamped and embedded in the fixing groove.

In this embodiment, the retainer ring 8 has a semicircular shape with a half-open ring.

In this embodiment, the bottom of the two sides of the upper disc spring 5 and the lower disc spring 6 are arched outwards from the center position, and are arranged at an angle with the horizontal bottom surface of the upper disc spring 5 and the lower disc spring 6.

In this embodiment, the center of the bottom end surface of the lower disc spring 6 is directly clamped on the boss of the shaft core 1, and the upper end surface of the lower disc spring contacts with the lower end surface of the clutch coupling end 4.

In this embodiment, the bottom surface of the upper disc spring 5 directly contacts with the upper end surface of the clutch helical teeth end 3, and the center arched position of the upper end surface of the upper disc spring 5 directly abuts against the washer 7.

In this embodiment, the circumference of the upper end surface of the clutch coupling end 4 is fixedly provided with saw teeth, and the saw teeth are curved teeth.

In this embodiment, the circumference of the lower end surface of the clutch helical tooth end 3 is fixedly provided with saw teeth, and the saw teeth are curved surface teeth.

In this embodiment, the curvature radian of the curved teeth on the upper end surface of the clutch coupling end 4 is matched with the curvature radian of the curved teeth on the lower end surface of the clutch helical teeth end 3.

In the embodiment, the plane where the curved surface tooth crest on the clutch helical tooth end 3 and the clutch connecting shaft end 4 is located is parallel to the radius of the clutch helical tooth end 3 and the clutch connecting shaft end 4.

The inclined plane of the end face teeth can enable the clutch to produce axial force, and when the axial force is larger than the pressure of the disc springs on the two sides, the clutch can be separated, so that idling of the motor is realized, and the motor and the tooth surface are protected from being damaged.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.