Bevel gear set structure of transfer gear of gearbox of 5-ton loader

Abstract

The utility model discloses a transfer gear bevel gear set structure of a gearbox of a 5-ton loader. The transfer gear bevel gear set structure comprises transfer gears, a variable-speed pump shaft gear and a steering pump shaft gear. The transfer gear, the variable-speed pump shaft gear and the steering pump shaft gear are all of a helical tooth structure, the tooth number of the transfer gear is Z53, the tooth number of the variable-speed pump shaft gear is Z53, the tooth number of the steering pump shaft gear is Z63, the pressure angle is 20 degrees, and the helical angle is 15 degrees. The distance between the transfer teeth and the shaft gear of the variable-speed pump is 183 + / -0.03 mm, and the distance between the transfer teeth and the shaft gear of the steering pump is 203 + / -0.03 mm, so that a transfer tooth bevel gear set structure is installed on an original box body, and the transmission precision is ensured. The transfer gear set is stable in transmission, low in vibration and noise and high in bearing capacity, and solves the problems of high vibration and noise and weak bearing capacity during transmission of the transfer gear set in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to loader gearbox assembly technical field, concretely relates to 5 tons loader gearbox transfer gear helical gear set structure. BACKGROUND

[0002] The main function of loader gearbox transfer gear gear set is to transmit the power of the machine core to the transfer pump shaft gear and the steering pump shaft gear through the transfer gear, and then the power is transmitted to the speed pump shaft through the transfer pump shaft gear and to the steering pump through the steering pump shaft gear. In the prior art, the structural parameters of a 5 tons loader gearbox transfer gear gear set are as follows: the number of teeth of the transfer gear gear is Z42, the number of teeth of the transfer pump shaft gear is Z42, the number of teeth of the steering pump shaft gear is Z49, the modulus is 4, the pressure angle is 20°, and the helix angle is 0°. The structure has the following defects: first, the spur gear with a helix angle of 0° is instantaneously engaged and disengaged during transmission, which is prone to vibration and noise; second, the number of simultaneously engaged teeth of the spur gear is relatively small, and the bearing capacity is weak. SUMMARY

[0003] The utility model discloses a kind of transmission stable, vibration and noise are small, bearing capacity is strong 5 tons loader gearbox transfer gear helical gear set structure, to solve the problem of vibration and noise in prior art transfer gear gear set transmission, bearing capacity is weak.

[0004] To achieve the above object, the utility model 5 tons loader gearbox transfer gear helical gear set structure includes transfer gear 1, transfer pump shaft gear 2 and steering pump shaft gear 3;Transfer gear 1, transfer pump shaft gear 2 and steering pump shaft gear 3 all adopt helical structure, the number of teeth of this transfer gear 1 is Z53, the number of teeth of transfer pump shaft gear 2 is Z53, the number of teeth of steering pump shaft gear 3 is Z63, pressure angle is 20°, helix angle is 15°;The shaft spacing of transfer gear 1 and transfer pump shaft gear 2 is 183±0.03mm, the shaft spacing of transfer gear 1 and steering pump shaft gear 3 is 203±0.03mm, to realize on original box body installation transfer gear helical gear set structure and ensure transmission accuracy.

[0005] The structural parameters of the above-mentioned 5 tons loader gearbox transfer gear helical gear set are obtained by theoretical calculation of gear contact fatigue strength, gear bending and bending strength, center distance and other parameters.

[0006] The utility model 5 tons loader gearbox transfer gear helical gear set structure adopts helical structure, simultaneously increases the number of teeth of transfer gear 1, transfer pump shaft gear 2 and steering pump shaft gear 3, and has the following technical features and beneficial effects:

[0007] 1, transmission is relatively stable, vibration and noise produced are smaller, bearing capacity is stronger, solve the problem of vibration and noise in prior art transfer gear gear set transmission, bearing capacity is weak;

[0008] 2. The structure can be installed on the original box body and ensure the transmission accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the main view structure schematic diagram of the 5-ton loader gearbox transfer gear helical gear set structure of the utility model.

[0010] The figure sign: transfer gear 1, speed pump shaft gear 2, steering pump shaft gear 3. DETAILED DESCRIPTION

[0011] The specific embodiment of the 5-ton loader gearbox transfer gear helical gear set structure of the utility model is further explained in detail in combination with the drawings.

[0012] Figure 1 The 5-ton loader gearbox transfer gear helical gear set structure of the utility model includes transfer gear 1, speed pump shaft gear 2 and steering pump shaft gear 3; the transfer gear 1, speed pump shaft gear 2 and steering pump shaft gear 3 all adopt helical structure, the number of teeth of the transfer gear 1 is Z53, the number of teeth of the speed pump shaft gear 2 is Z53, the number of teeth of the steering pump shaft gear 3 is Z63, the pressure angle is 20 °, the spiral angle is 15 °; the shaft spacing of the transfer gear 1 and the speed pump shaft gear 2 is 183 ± 0.03mm, the shaft spacing of the transfer gear 1 and the steering pump shaft gear 3 is 203 ± 0.03mm, so as to realize the installation of the transfer gear helical gear set structure on the original box body and ensure the transmission accuracy.

[0013] The 5-ton loader gearbox transfer gear helical gear set structure of the utility model utilizes the structural characteristics of helical gear, the transmission process is gradually into and out of engagement, the vibration and noise produced are smaller, and the transmission is more stable; on the other hand, the helical gear set structure has large coincidence degree when engaging, and the number of teeth participating in engagement is more, and the carrying capacity is stronger.

Claims

1. A structure of a gear set of a transfer case of a 5-ton loader, which comprises a transfer gear (1), a gear (2) of a variable speed pump shaft, and a gear (3) of a steering pump shaft; characterized in that: The split gear (1), the variable speed pump shaft gear (2) and the steering pump shaft gear (3) all adopt the helical tooth structure, the tooth number of the split gear (1) is Z53, the tooth number of the variable speed pump shaft gear (2) is Z53, the tooth number of the steering pump shaft gear (3) is Z63, the pressure angle is 20°, and the spiral angle is 15°; the shaft interval of the split gear (1) and the variable speed pump shaft gear (2) is 183±0.03mm, and the shaft interval of the split gear (1) and the steering pump shaft gear (3) is 203±0.03mm, so that the split gear helical gear set structure can be installed on the original box body and the transmission precision can be ensured.

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