Transmission shaft with overload protection function

Abstract

A transmission shaft with an overload protection function belongs to the technical field of mechanical transmission and is characterized in that an overload protector is arranged between an input end and an output end of the transmission shaft and consists of a flange shaft, a first tooth pad, a second tooth pad, a shaft sleeve, a flange sleeve, a pressure spring, a spring pad, a nut and a flange pipe, the second tooth pad and the first tooth pad are arranged adjacently, the second tooth pad is fixed on the flange sleeve, the shaft sleeve is installed in inner holes of the first tooth pad and the second tooth pad, the shaft sleeve is sleeved on a shaft body of the flange shaft, the flange sleeve is sleeved with the pressure spring, the flange sleeve is sleeved with the spring pad, and the spring pad is located at the rear end of the pressure spring. The nut abuts against the pressure spring through the spring pad, and the flange pipe is sleeved and fixed to the periphery of the flange sleeve. Power is transmitted through the double tooth pads, and the power transmission effect is good; when the transmission shaft reaches the set torque, the double tooth pads are separated, the transmission shaft stops transmitting power, the effect of protecting the gearbox and the transmission shaft from being damaged is achieved, and the protection effect is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical drive technical field, especially relates to a transmission shaft with overload protection function. BACKGROUND

[0002] The existing transmission shaft has no overload protection, a part of transmission shafts is provided with a screw rod to achieve overload protection by shearing the screw rod, and a part of overload protection devices uses friction plate.

[0003] The screw rod is used as overload protection, and the screw rod plays a protection role after being sheared, but the function needs to be restored by reinstallation, which is time-consuming and laborious and increases the use cost; the friction plate is used as overload protection, and the friction plate is prone to skidding, the power transmission is poor, and the friction plate needs to be replaced after wearing, which is time-consuming and laborious and increases the use cost. SUMMARY

[0004] The utility model discloses a transmission shaft with overload protection function to solve the technical problem of the transmission shaft in the background art.

[0005] A transmission shaft with overload protection function, one end is input end, the other end is output end, is provided with overload protector between input end and output end, and the overload protector is composed of flange shaft, first tooth pad, second tooth pad, shaft sleeve, flange sleeve, pressure spring, spring pad, nut and flange pipe, the first tooth pad is fixed on the flange shaft, the second tooth pad is adjacent to the first tooth pad, and the second tooth pad is fixed on the flange sleeve, the shaft sleeve is installed in the inner hole of the first tooth pad and the second tooth pad, and the coaxiality of the first tooth pad and the second tooth pad is kept, the shaft sleeve is sleeved on the shaft of the flange shaft, the pressure spring is sleeved on the flange sleeve, the spring pad is sleeved on the flange sleeve, the spring pad is located at the rear end of the pressure spring, the nut is screwed on the flange shaft, the nut is pressed against the pressure spring through the spring pad, the pressure of the pressure spring can be adjusted, and the flange pipe is sleeved and fixed on the outer periphery of the flange sleeve.

[0006] The working process and principle of the utility model:

[0007] When the transmission shaft normally transmits torque power, the second tooth pad is closely engaged with the first tooth pad under the pressing of the pressure spring, and the transmission shaft normally works to transmit power, when the transmission shaft reaches the set torque, the second tooth pad is separated from the first tooth pad by the compression of the pressure spring, the transmission shaft stops transmitting power, and the transmission shaft and the gearbox are protected from damage.

[0008] The utility model is used for corn harvester, transmission shaft input end and many rotation number adjustable and take reverse rotation's gearbox output end connection, transmission shaft output end connects the reversing box of cutting platform, through this transmission shaft is drive whole cutting platform rotation, if cutting platform work when meet hard thing and stop cutting platform reach set torque, second tooth pad resist top pressure spring compression and make second tooth pad and first tooth pad separate, transmission shaft stop power transmission, play the role of protection gearbox and transmission shaft not damage.

[0009] The utility model discloses a beneficial technical effect:

[0010] 1, the utility model discloses a double tooth pad power transmission, increase friction, and the transmission effect is good, when transmission shaft reaches set torque, double tooth pad separates, and transmission shaft stops power transmission, plays the role of protection gearbox and transmission shaft not damage, and the protection effect is good.

[0011] 2, the utility model discloses be used for corn harvester, transmission shaft input end and many rotation number adjustable and take reverse rotation's gearbox output end connection, transmission shaft output end connects the reversing box of cutting platform, through the utility model drive whole cutting platform rotation, if cutting platform work when meet hard thing and stop cutting platform reach set torque, second tooth pad resist top pressure spring compression and make second tooth pad and first tooth pad separate, transmission shaft stop power transmission, play the role of protection gearbox and transmission shaft not damage. DRAWINGS

[0012] Figure 1 It is the three-dimensional schematic view of the utility model embodiment.

[0013] Figure 2 It is the explosion drawing of the utility model embodiment.

[0014] Figure 3 Make the partial solution schematic view of the utility model embodiment. CONCRETE IMPLEMENTATION

[0015] As Figure 1 , Figure 2 and Figure 3 Indicated, a kind of transmission shaft with overload protection function, one end is input end, its other end is output end, input end and output end between being provided with overload protector A, overload protector A is by flange shaft 1, first tooth pad 2, second tooth pad 3, shaft sleeve 4, flange sleeve 5, pressure spring 6, spring pad 7, nut 8 and flange pipe 9, first tooth pad 2 is fixed on flange shaft 1, second tooth pad 3 is adjacent to the setting of first tooth pad 2, second tooth pad 3 is fixed on flange sleeve 5, shaft sleeve 4 is installed in the inner hole of first tooth pad 2 and second tooth pad 3, keep the coaxial degree of first tooth pad 2 and second tooth pad 3, shaft sleeve 4 is on the shaft of flange shaft 1,

[0016] The pressure spring 6 is sleeved on the flange sleeve 5, the spring pad 7 is sleeved on the flange sleeve 5, the spring pad 7 is located at the rear end of the pressure spring 6, the nut 8 is screwed on the flange shaft 1, the nut 8 abuts against the pressure spring 6 through the spring pad 7, the pressure of the pressure spring 6 can be adjusted, and the flange pipe 9 is sleeved and fixed on the outer periphery of the flange sleeve 5.

[0017] The first tooth pad 2 is provided with four first cylinders 10, the first flange plate 11 of the flange shaft 1 is provided with four first holes 12, and the first tooth pad 2 is fixed on the flange shaft 1 through the first cylinders 10 and the first holes 12.

[0018] The second tooth pad 3 is provided with four second cylinders 13, the second flange plate 14 of the flange sleeve 5 is provided with four second holes 15, and the second tooth pad 3 is fixed on the flange sleeve 5 through the second cylinders 13 and the second holes 15.

[0019] Working process and principle of the embodiment:

[0020] When the transmission shaft normally transmits torque power, the second tooth pad 3 is in close engagement with the first tooth pad 2 under the abutment of the pressure spring 6, and the transmission shaft normally works to transmit power; when the transmission shaft reaches the set torque, the second tooth pad 3 abuts against the pressure spring 6 to compress the second tooth pad 3 and separate the second tooth pad 3 from the first tooth pad 2, so that the transmission shaft stops transmitting power, and the transmission shaft and the gearbox are protected from being damaged.

[0021] When the utility model is used for a corn harvester, the transmission shaft input end is connected with the gearbox output end of a multi-rotation number adjustable and reverse rotation gearbox, and the transmission shaft output end is connected with a reversing box of a header, and the transmission shaft drives the whole header to rotate; if the header is stuck by a hard object during work and reaches the set torque, the second tooth pad 3 abuts against the pressure spring 6 to compress the second tooth pad 3 and separate the second tooth pad 3 from the first tooth pad 2, so that the transmission shaft stops transmitting power, and the transmission shaft and the gearbox are protected from being damaged.

Claims

1. A drive shaft with overload protection function, one end of which is an input end, the other end of which is an output end, an overload protector A is arranged between the input end and the output end, characterized in that: The overload protector A is composed of a flange shaft (1), a first tooth pad (2), a second tooth pad (3), a shaft sleeve (4), a flange sleeve (5), a pressure spring (6), a spring pad (7), a nut (8) and a flange pipe (9). The first tooth pad (2) is fixed on the flange shaft (1), the second tooth pad (3) is arranged adjacent to the first tooth pad (2), the second tooth pad (3) is fixed on the flange sleeve (5), the shaft sleeve (4) is installed in the inner hole of the first tooth pad (2) and the second tooth pad (3), the shaft sleeve (4) is sleeved on the shaft of the flange shaft (1), the pressure spring (6) is sleeved on the flange sleeve (5), the spring pad (7) is sleeved on the flange sleeve (5), the spring pad (7) is located at the rear end of the pressure spring (6), the nut (8) is screwed on the flange shaft (1), the nut (8) abuts against the pressure spring (6) through the spring pad (7), the pressure of the pressure spring (6) can be adjusted, and the flange pipe (9) is sleeved and fixed on the outer periphery of the flange sleeve (5).

2. The drive shaft with overload protection function according to claim 1, characterized in that: The first tooth pad (2) has four first cylinders (10), the first flange disc (11) of the flange shaft (1) has four first holes (12), and the first tooth pad (2) is fixed on the flange shaft (1) through the first cylinders (10) and the first holes (12). The second tooth pad (3) has four second cylinders (13), the second flange disc (14) of the flange sleeve (5) has four second holes (15), and the second tooth pad (3) is fixed on the flange sleeve (5) through the second cylinders (13) and the second holes (15).

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