CN200985990Y

CN200985990Y - Speed variator of engineering project machine

Info

Publication number: CN200985990Y
Application number: CN 200620161431
Authority: CN
Inventors: 蔡耀熙; 蔡维正; 蔡伟博
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-22
Filing date: 2006-12-22
Publication date: 2007-12-05
Anticipated expiration: 2016-12-22

Abstract

The utility model relates to an engineering machine gear box. The transmission ratio for one shaft gear (1) and a high speed gear (2) is 1:1.3 to 1.5, and the transmission ratio for the high speed gear (2) and the small end of the assistant speed changing slide moving gear (4) is 1.7 to 1.5:1. The transmission ratio for the low speed gear (3) and the big end of the assistant speed changing slide moving gear (4) is 1:1.4 to 1.6. Firstly, the transmission ratio for the three speed gear (7) and the bigger end of the three back speed slide moving gear (10) is 1:1.4 to 1.6. Secondly, the transmission ratio for the four speed gear (6) and the four speed slide moving gear (9) is 1.8 to 2.0:1. The transmission ratio for the gear shaft (8) and the speed down big gear (11) is 1:3 to 4.5, and the transmission ratio for the back speed gear (5) and the smaller end of the three back speed slide moving gear (10) is 1.0 to 1.2:1. The speed of each gear position is proper, and the size choosing of the spline shaft meets the requirement of the product, which not only saves power, improves working efficiency, but also prolongs the service life of the gear box.

Description

Gearbox of engineering machine

Technical field

The utility model relates to a kind of gearbox, specifically, is a kind of gearbox of engineering machine.

Following two shortcomings of gearbox of engineering machine ubiquity of the same type that background technique is existing: the first, the velocity ratio design is reasonable inadequately, and promptly low speed is too high, and is low excessively at a high speed, so operating efficiency is low; The second, gear shaft is thinner, and intensity can not adapt to the demand of product, causes gearbox shorter working life.

The model utility content

Technical problem to be solved in the utility model is, a kind of gearbox of engineering machine is provided, and by strengthening module, improves the velocity ratio of associated gear and also selects suitable gear shaft for use, improves its combination property, in order to overcome the defective of above-mentioned existing like product.

The technological scheme that its technical problem that solves the utility model adopts is as follows:

A kind of gearbox of engineering machine, one shaftgear is fixed on first, high gear and low speed gear are fixed on second by spacer, a high gear and a shaftgear often mesh, and reverse gear is fixed on second, pay the speed change shifting slide gear, two, fourth gear and, three-range transmission are contained on the 3rd, two, fourth gear shifting slide gear and one or three reverse gear shifting slide gears are contained on the 4th, and the deceleration gearwheel is fixed on the 5th, often mesh with the 4th fixed gear.

The velocity ratio of one shaftgear and high gear is 1: 1.3-1.5, preferred 1: 1.4; High gear is 1.7-1.5 with the velocity ratio of paying speed change shifting slide gear small end: 1, and preferred 1.647: 1; Low speed gear is 1 with the velocity ratio of paying the big end of speed change shifting slide gear: 1.4-1.6, preferred 1: 1.5; One, the velocity ratio of the bigger end of three-range transmission and one or three reverse gear shifting slide gears is 1: 1.25-1.45, preferred 1: 1.388; Two, the velocity ratio of fourth gear and two, fourth gear shifting slide gear is 1.8-2.0: 1, and preferred 1.941: 1; The velocity ratio of gear shaft and deceleration gearwheel is 1: 3-4.5, and, preferred 1: 3.266 or 1: 3.923; The velocity ratio than small end of reverse gear and one or three reverse gear shifting slide gears is 1.0-1.2: 1, and preferred 1.1: 1.

Second and the 3rd adopt six keys, 36 millimeters of outer diameters, 31 millimeters of inner diameters, key wide eight millimeters; The 4th is adopted six keys, 40 millimeters of outer diameters, 35 millimeters of inner diameters, wide ten millimeters on key.

Good effect of the present utility model is: the number of teeth of associated gear, velocity ratio design science, therefore, each gear speed is reasonable, not only saves power, and has improved working efficiency.In addition, the design alternative of gear shaft more meets product requirement, has improved the product combination property, has prolonged the working life of gearbox.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Embodiment

As shown in Figure 1, among the embodiment of the present utility model, first 12 right-hand member stretches out gearbox, connects with clutch, and a shaftgear 1 is fixed on first 12 left end.High gear 2 and low speed gear 3 are fixed on second 13 left end by spacer, and a high gear 2 and a shaftgear 1 often mesh.

Reverse gear 5 is fixed on second 13, pays speed change shifting slide gear 4 and is contained on the 3rd 14.Two, fourth gear 6 and, three-range transmission 7 are fixed on the 3rd 14 by spacer.Two, fourth gear shifting slide gear 9 and one or three reverse gear shifting slide gears 10 are contained in (this axle is second gear shaft) on the 4th 15.Deceleration gearwheel 11 is fixed on the 5th 16, often meshes with gear shaft 8.

Wherein, the number of teeth of a shaftgear 1 is 20 teeth, and the number of teeth of high gear 2 is 20 octadentates, and the two transmission engage ratio is 1: 1.4.Paying the speed change shifting slide gear 4 small end numbers of teeth is 17 teeth, and big end tooth number is 27 teeth, and high gear 2 is 1.647: 1 with the velocity ratio of paying speed change shifting slide gear 4 small ends.The low speed gear 3 of ten octadentates meshes with paying speed change shifting slide gear 4 big ends, and velocity ratio is 1: 1.5.Ten octadentates one, bigger end (the 25 tooth) engagement of three-range transmission 7 and one or three reverse gear shifting slide gears 10, velocity ratio is 1: 1.388.33 teeth two, fourth gear 6 and 17 teeth two, 9 engagements of fourth gear shifting slide gear, velocity ratio is 1.941: 1.

Gear shaft

8 and 11 engagements of deceleration gearwheel, when gear shaft 8 was 15 teeth, deceleration gearwheel 11 was 49 teeth, velocity ratio is 1: 3.266; When gear shaft 8 was 13 teeth, deceleration gearwheel 11 was 51 teeth, and velocity ratio is 1: 3.923.

Meshing than small end (20 tooth) of the reverse gear 5 of 20 bidentates and one or three reverse gear shifting slide gears 10, velocity ratio is 1.1: 1.

Second 13 and the 3rd 14 adopt six keys, 36 millimeters of spline external diameters, 31 millimeters in footpath, the end, key wide eight millimeters; Adopt six keys, 40 millimeters of spline external diameters, 35 millimeters in footpath, the end, wide ten millimeters on key for the 4th 15.

In order to realize the position conversion of shifting slide gear in the gearbox, be provided with main transformer speed and secondary speed change two one control levers.Main transformer speed joystick manipulation two, fourth gear shifting slide gear 9 and one or three reverse gear shifting slide gears 10; Secondary shift is handled and is paid speed change shifting slide gear 4.Handle major and minor speed change lever, can stir corresponding shifting slide gear, obtain the gear of selecting for use.

Claims

1, a kind of gearbox of engineering machine, one shaftgear (1) is fixed on first (12), high gear (2) and low speed gear (3) are fixed on second (13) by spacer, high gear (2) and the normal engagement of a shaftgear (1), reverse gear (5) is fixed on second (13), pay speed change shifting slide gear (4), two, fourth gear (6) and one, three-range transmission (7) is contained on the 3rd (14), two, fourth gear shifting slide gear (9) and one or three reverse gear shifting slide gears (10) are contained on the 4th (15), deceleration gearwheel (11) is fixed on the 5th (16), often mesh with the fixed gear of the 4th (15), it is characterized in that: a shaftgear (1) is 1 with the velocity ratio of high gear (2): 1.3-1.5; High gear (2) is 1.7-1.5 with the velocity ratio of paying speed change shifting slide gear (4) small end: 1; Low speed gear (3) is 1 with the velocity ratio of paying the big end of speed change shifting slide gear (4): 1.4-1.6; One, three-range transmission (7) is 1 with the velocity ratio of the bigger end of one or three reverse gear shifting slide gears (10): 1.25-1.45; Two, the velocity ratio of fourth gear (6) and two, fourth gear shifting slide gear (9) is 1.8-2.0: 1; Gear shaft (8) is 1 with the velocity ratio of deceleration gearwheel (11): 3-4.5; Reverse gear (5) is 1.0-1.2 with the velocity ratio than small end of one or three reverse gear shifting slide gears (10): 1.

2, gearbox of engineering machine as claimed in claim 1 is characterized in that: a shaftgear (1) is 1: 1.4 with the velocity ratio of high gear (2); High gear (2) is 1.647: 1 with the velocity ratio of paying speed change shifting slide gear (4) small end; Low speed gear (3) is 1: 1.5 with the velocity ratio of paying the big end of speed change shifting slide gear (4); One, three-range transmission (7) is 1: 1.388 with the velocity ratio of the bigger end of one or three reverse gear shifting slide gears (10); Two, the velocity ratio of fourth gear (6) and two, fourth gear shifting slide gear (9) is 1.941: 1; Gear shaft (8) is 1: 3.266 or 1: 3.923 with the velocity ratio of deceleration gearwheel (11); Reverse gear (5) is 1.1: 1 with the velocity ratio than small end of one or three reverse gear shifting slide gears (10).

3, gearbox of engineering machine as claimed in claim 1 or 2 is characterized in that: second (13) and the 3rd (14) adopt six keys, 36 millimeters of spline external diameters, 31 millimeters in footpath, the end, key wide eight millimeters; The 4th (15) adopt six keys, 40 millimeters of spline external diameters, 35 millimeters in footpath, the end, wide ten millimeters on key.