Anti-overloading gearbox

Abstract

The utility model discloses an anti-overloading gearbox which comprises a shell, a mute assembly, a driving gear, a protection gear set, an output gear and a motor. The overload protection device is simple in structure and reasonable in design, the protection gear set is arranged and comprises the transmission shaft, the driving protection gear and the driven protection gear, and the driving protection gear and the driven protection gear are connected through the spring and keep synchronous rotation through pretightening force of the spring. The axial thrust of the driving protection gear and the axial thrust of the driven protection gear are larger than the pre-tightening force of the spring, so that the driven gear is separated from the driving protection gear, and overload protection is achieved; an interlayer between the perforated panel and the inner side of the shell is divided into a plurality of closed small cavities through the honeycomb core, air flow is blocked, sound wave transmission is blocked, and the purpose of noise reduction is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear boxes, in particular to an overload-proof gear box. Background Art

[0002] When the gearbox bears the force from the input shaft, it outputs it to the output shaft through the gearbox to adjust the speed of the output shaft. When the speed of the input shaft is too high, the speed of the output shaft will be too fast, causing damage to the gear or output shaft. At the same time, due to the high-speed operation of the gear, the gearbox will also make a lot of noise during use. Utility Model Content

[0003] The purpose of the present invention is to provide an overload-proof gearbox to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: an overload-proof gearbox, comprising a housing, a silent assembly disposed inside the housing, the housing comprising a first housing and a second housing, a motor disposed on one side of the second housing, an output shaft of the motor passing through the second housing and rotatably connected to the first housing, a drive gear, a protection gear set, and an output gear disposed in sequence inside the housing from the output shaft to the other side of the housing, the drive gear, the protection gear set, and the output gear being meshed with each other, and the output gear being disposed on a load output shaft;

[0005] The protective gear set includes:

[0006] A transmission rod, the transmission rod is arranged inside the housing, and ball bearings are provided at both ends of the transmission rod;

[0007] An active protection gear, the active protection gear being arranged on a side of the transmission rod close to the second housing;

[0008] The driven protection gear is arranged on the side of the transmission rod close to the first shell. The active protection gear and the driven protection gear are connected by a spring. The active protection gear and the driven protection gear maintain synchronous rotation due to the preload force of the spring.

[0009] Preferably, the mute component includes:

[0010] a perforated panel, the perforated panel being arranged inside the shell to form a sandwich with the shell;

[0011] The honeycomb core is arranged in a sandwich formed by the perforated panel and the shell, and sound-absorbing cloth is attached to the connection between the honeycomb core, the perforated panel and the shell.

[0012] Preferably, the load output shaft passes through the housing.

[0013] Preferably, fixing holes for connection are provided on the side surfaces of the first shell and the second shell.

[0014] Preferably, a ball bearing is provided at the intersection of the load output shaft and the housing.

[0015] Preferably, one side of the second shell is provided with an open slot for installing other components.

[0016] Preferably, a fixing seat is provided at the bottom of the motor.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This anti-overload gearbox is provided with a protective gear set, which includes a transmission shaft, an active protective gear and a driven protective gear. The active protective gear and the driven protective gear are connected by a spring and maintain synchronous rotation by the preload force of the spring. When an overload occurs, the axial thrust of the active and driven protective gears exceeds the spring preload, causing the driven gear to disengage from the active protective gear, thereby achieving overload protection.

[0019] 2. This anti-overload gearbox is equipped with a silent component, which includes a perforated panel, a honeycomb core and a sound-absorbing cloth. The honeycomb core separates the perforated panel and the interlayer inside the shell into many closed small chambers, blocking air flow and hindering the transmission of sound waves, thereby achieving the purpose of noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is an exploded schematic diagram of the overall structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the hidden second shell of the present invention;

[0023] Figure 4 It is an enlarged side view of the sound-absorbing structure of the present invention.

[0024] In the figure: 1. Shell; 11. First shell; 12. Second shell; 2. Silent assembly; 21. Perforated panel; 22. Honeycomb core; 23. Sound-absorbing cloth; 3. Motor; 31. Output shaft; 4. Driving gear; 5. Protection gear set; 51. Transmission rod; 52. Active protection gear; 53. Driven protection gear; 54. Spring; 55. Ball bearing; 6. Output gear; 7. Load output shaft; 8. Fixing hole; 9. Opening slot; 10. Fixing seat. DETAILED DESCRIPTION

[0025] 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.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "disposed" should be understood broadly. For example, they can refer to fixed connection or disposition, detachable connection or disposition, or integrated connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "several" means two or more, unless otherwise specifically defined.

[0029] Example 1

[0030] See also Figure 1-4As shown, the utility model provides a technical solution for an overload-proof gearbox: an overload-proof gearbox, comprising a housing 1, a silent component 2 is arranged inside the housing 1, the housing 1 comprises a first housing 11 and a second housing 12, a motor 3 is arranged on one side of the second housing 12, the output shaft 31 of the motor 3 passes through the second housing 12 and is rotatably connected to the first housing 11, a driving gear 4, a protection gear set 5 and an output gear 6 are arranged in sequence from the output shaft 31 of the motor 3 to the outside of the housing 1, the driving gear 4, the protection gear set 5 and the output gear 6 are meshed with each other, and the output gear 6 is arranged on the load output shaft 7; the protection gear set 5 comprises: a transmission rod 51, an active protection gear 52, a driven protection gear 53, a spring 54, a roller Ball bearings 55, a transmission rod 51 is arranged inside the housing 1, ball bearings 55 are arranged at both ends of the transmission rod 51, an active protection gear 52 is arranged on the side of the transmission rod 51 close to the second housing 12, and a driven protection gear 53 is arranged on the side of the transmission rod 51 close to the first housing 11. The active protection gear 52 and the driven protection gear 53 are connected by a spring 54 in the middle. The active protection gear 52 and the driven protection gear 53 maintain synchronous rotation through the preload force of the spring 54. By providing a protection gear set 5, when an overload occurs, the axial thrust of the active protection gear 52 and the driven protection gear 53 is greater than the preload force of the spring 54, thereby causing the driven gear 53 to disengage from the active protection gear 52, thereby achieving overload protection.

[0031] The sound-absorbing component 2 includes: a perforated panel 21, a honeycomb core 22, and a sound-absorbing cloth 23. The perforated panel 21 is arranged on the inner side of the shell 1 to form a sandwich with the shell 1, and the honeycomb core 22 is arranged in the sandwich formed by the perforated panel 21 and the shell 1. The sound-absorbing cloth 23 is affixed to the connection between the honeycomb core 22, the perforated panel 21 and the shell 1. The honeycomb core 22 separates the perforated panel 21 and the sandwich inside the shell 1 into many closed small chambers, blocking the air flow, hindering the transmission of sound waves, and achieving the purpose of noise reduction.

[0032] The load output shaft 7 passes through the housing 1 to facilitate connection with the load.

[0033] Fixing holes 8 for connection are provided on the sides of the first housing 11 and the second housing 12 .

[0034] A ball bearing 55 is provided at the intersection of the load output shaft 7 and the housing 1 to reduce rotational friction and increase output power.

[0035] An opening slot 9 for mounting other components is provided on one side of the second housing 12 .

[0036] A fixing seat 10 is provided at the bottom of the motor 3 for fixing the motor.

[0037] In this device, a protection gear set 5 is provided. When an overload occurs, the axial thrust of the active protection gear 52 and the driven protection gear 53 is greater than the preload force of the spring 54, thereby causing the driven gear 53 to disengage from the active protection gear 52, thereby achieving overload protection; a silent component 2 is provided, and the honeycomb core 22 is used to separate the perforated panel 21 and the inner layer of the shell 1 into many closed small chambers, blocking the air flow and hindering the transmission of sound waves, thereby achieving the purpose of noise reduction.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An overload-proof gearbox, comprising a housing (1), characterized in that: A mute component (2) is provided inside the housing (1), and the housing (1) includes a first housing (11) and a second housing (12). A motor (3) is provided on one side of the second housing (12), and an output shaft (31) of the motor (3) passes through the second housing (12) and is rotatably connected to the first housing (11). A driving gear (4), a protective gear set (5), and an output gear (6) are provided in sequence inside the housing (1) from the output shaft (31) to the other side of the housing (1). The driving gear (4), the protective gear set (5), and the output gear (6) are meshed with each other, and the output gear (6) is provided on the load output shaft (7); The protective gear set (5) includes: A transmission rod (51), the transmission rod (51) is arranged inside the housing (1), and ball bearings (55) are provided at both ends of the transmission rod (51); an active protection gear (52), the active protection gear (52) being arranged on a side of the transmission rod (51) close to the second housing (12); A driven protection gear (53) is provided on a side of the transmission rod (51) close to the first housing (11); the active protection gear (52) and the driven protection gear (53) are connected via a spring (54); the active protection gear (52) and the driven protection gear (53) are kept in synchronous rotation by the preload force of the spring (54).

2. The overload-proof gearbox according to claim 1, characterized in that: The mute component (2) includes: a perforated panel (21), the perforated panel (21) being arranged on the inner side of the shell (1) to form a sandwich with the shell (1); A honeycomb core (22) is provided in a sandwich formed by the perforated panel (21) and the shell (1), and a sound-absorbing cloth (23) is attached to the connection between the honeycomb core (22), the perforated panel (21) and the shell (1).

3. The overload-proof gearbox according to claim 1, characterized in that: The load output shaft (7) passes through the housing (1).

4. The overload-proof gearbox according to claim 1, characterized in that: Fixing holes (8) for connection are provided on the sides of the first shell (11) and the second shell (12).

5. The overload-proof gearbox according to claim 1, characterized in that: A ball bearing (55) is provided at the intersection of the load output shaft (7) and the housing (1).

6. The overload-proof gearbox according to claim 1, characterized in that: An opening groove (9) for mounting components is provided on one side of the second shell (12).

7. The overload-proof gearbox according to claim 1, characterized in that: A fixing seat (10) is provided at the bottom of the motor (3).

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