CN205639557U - Transfer case connection structure on modified excavator - Google Patents

Abstract

The utility model relates to a transfer case connection structure on modified excavator, including box, speed change mechanism and transfer case assembly, speed change mechanism and transfer case assembly all set up in the box, are equipped with the second back shaft in the transfer case assembly, and the both ends of second back shaft rotationally set up in the box, and the second back shaft is connected with speed change mechanism's output transmission, still includes first bevel gear, and first bevel gear is fixed at the middle part of second back shaft, is equipped with the output axial region in the box, and the output axial region is rotationally connected in the box, output the axial region the efferent of one end for stretching out the box, the other end be with first bevel gear complex umbrella tooth portion. This connection structure structure letter is gathered, and occupation space is little, and the both ends of first back shaft rotationally set up in the box, first bevel gear is fixed at the middle part of first back shaft, and first back shaft can bear the effort of first bevel gear comparatively uniformly, guarantees long -time stable transmission.

Description

Transfer case attachment structure on the excavator of a kind of improvement

Technical field

This utility model belongs to excavator technical field, is specifically related to transfer case attachment structure on the excavator of a kind of improvement.

Background technology

Change speed gear box is one of important drive disk assembly of excavator, and speed and moment of torsion that it is responsible for transmitting electromotor pass to Final transmission system, changes the gear ratio between electromotor and wheel, it is achieved the advance of excavator and backward gear are handled, and can realize The power passing to running gear is cut off, to adapt to the needs of excavator operation and traveling in the case of electromotor operates, it is simple to The startup of electromotor and parking safety.

In current change speed gear box, in change speed gear box, the outfan of gear is in transmission connection with the input of transfer case assembly, Its attachment structure as it is shown in fig. 7, gear output shaft 201 end on be arranged with bevel gear 202, bevel gear 202 connects In the end of output shaft 201, in the casing 300 of transfer case assembly, it is provided with rotating support shaft 301, the one of support shaft 301 End is outfan 303, and the other end is provided with the bevel gear part 302 coordinated with bevel gear 202, by bevel gear 202 and bevel gear part 302 Coordinate the power transmission realizing between gear and transfer case assembly.In such an embodiment, the casing 200 of change speed gear box and transfer The casing 300 of box assembly is independently arranged, and whole output device volume is the hugest, takies more space, and gear Output shaft 201 and the junction serious wear after a long time use of bevel gear 202, bevel gear 202 is easier to abrasion.

In consideration of it, the problems referred to above are furtherd investigate by inventor, this case is then had to produce.

Utility model content

The purpose of this utility model is on the excavator providing a kind of structure letter to gather stable improvement that transfer case connects knot Structure.

In order to achieve the above object, the such technical scheme of this utility model employing:

Transfer case attachment structure on the excavator of a kind of improvement, including casing, gear and transfer case assembly, speed change The outfan of mechanism is in transmission connection with the input of transfer case assembly, and described gear and described transfer case assembly are respectively provided with In described casing, being provided with the second support shaft in described transfer case assembly, the two ends of the second support shaft are rotatably arranged in institute Stating in casing, the second support shaft is in transmission connection with the outfan of described gear, also includes the first bevel gear, the first bevel gear Being fixed on the middle part of the second support shaft, be provided with output shaft in described casing, output shaft is rotatably connected to described case Internal, one end of output shaft is the output unit stretching out described casing, and the other end is the bevel gear part coordinated with the first bevel gear.

As a kind of optimal way of the present utility model, the two ends of described second support shaft are respectively by clutch shaft bearing and the Two bearings are connected in described casing.

As a kind of optimal way of the present utility model, described output shaft is vertically arranged with described second support shaft, institute State output shaft to be rotatably connected in described casing by the 3rd bearing.

After using the technical solution of the utility model, gear and transfer case assembly be may be contained within a casing In, its attachment structure is simpler gathers, and takes up room little, and the two ends of the first support shaft are rotatably arranged in described casing, the One bevel gear is fixed on the middle part of the first support shaft, and the first support shaft can bear the effect of the first bevel gear the most equably Power, it is ensured that long-time stable transmission.

Accompanying drawing explanation

Fig. 1 is section view deployed configuration schematic diagram of the present utility model；

Fig. 2 is the enlarged drawing in Fig. 1 at A；

Fig. 3 is the enlarged drawing in Fig. 1 at B；

Fig. 4 be in Fig. 1 B-B to gear fit structure schematic diagram；

Fig. 5 be in Fig. 1 A-A to gear fit structure schematic diagram；

Fig. 6 be in Fig. 1 C-C to gear fit structure schematic diagram；

Fig. 7 is the outfan of gear and the attachment structure figure of transfer case on excavator in prior art；

In figure:

1-the first gear 2-the second gear

3-the 3rd gear 4-the 4th gear

5-the 5th gear 6-the 6th gear

7-the 7th gear 8-eighth gear

9-the 9th gear 10-the tenth gear

11-the 11st gear 12-the first bevel gear

13-the first support shaft 21-the first housing

22-the second housing 23-the 3rd housing

30-first clutch axle assembly 31-retreats clutch

32-advance clutch 40-the first power transmission shaft

50-second driving shaft 60-second clutch axle assembly

61-low speed clutch 62-high speed clutch

70-fluid torque-converter 71-power shaft

72-housing 73-pump impeller

74-conduit 75-output shaft

76-installation portion 77-guide part

78-connecting plate 80-oil pump

90-the second support shaft 91-clutch shaft bearing

92-the second bearing 93-bevel gear part

94-output unit 95-the 3rd bearing

100-casing

In the figure 7:

The output shaft of the casing 201-gear of 200-gear

202-bevel gear 300-transfer case assembly casing

301-support shaft 302-bevel gear part

303-outfan

Detailed description of the invention

In order to the technical solution of the utility model is explained further, it is described in detail below in conjunction with the accompanying drawings.

Referring to figs. 1 through Fig. 6, excavator fluid power gear shift system, including casing 100, fluid torque-converter 70, oil pump 80, Gear and transfer case assembly, fluid torque-converter 70, oil pump 80, gear and transfer case assembly may be contained within casing In 100, the outfan of fluid torque-converter 70 is in transmission connection with the input of gear, the outfan of gear and transfer case The input of assembly is in transmission connection.Use this structure, by total to fluid torque-converter 70, oil pump 80, gear and transfer case Becoming to be integrated in a casing, whole gear shift system structure is simpler gathers.

As a kind of optimal way of the present utility model, described gear includes realizing forward and reverse drive gear Position switching first clutch axle assembly 30, in order to realize low gear and high gear switching second clutch axle assembly 60, the first power transmission shaft 40 and second driving shaft 50, first clutch axle assembly 30, second clutch axle assembly 60, first pass Moving axis 40 and second driving shaft 50 are all rotatably connected in described casing 100, first clutch axle assembly 30, second from Clutch axle assembly the 60, first power transmission shaft 40 and second driving shaft 50 4 be arranged in parallel.Overlap on first clutch axle assembly 30 Be provided with retreat clutch 31 with retreat clutch 31 coordinates the first gear 1, advance clutch 32 and with advance from Close the 5th gear 5 that mechanism 32 coordinates, second clutch axle assembly 60 is arranged with low speed clutch 61 and low speed clutch The 4th gear 4, high speed clutch 62 and the eighth gear 8 that coordinates with high speed clutch 62 that structure 61 coordinates, second from The outfan of clutch axle assembly 60 is in transmission connection with the input of described transfer case assembly, and the first power transmission shaft 40 is provided with the second tooth Wheel 2 and the 6th gear 6, the second gear 2 engages with the first gear 1, and second driving shaft 50 is provided with the 3rd gear 3 and the 7th gear 7, the 7th gear 7 engages with the 6th gear 6, and the 3rd gear 3 engages with the 4th gear 4, and the 7th gear 7 engages with eighth gear 8, The number of teeth of the 3rd gear 3 is less than the 4th gear 4, and the number of teeth of the 7th gear 7 is more than eighth gear 8, the 5th gear 5 and the 7th gear 7 engagements.

As a kind of optimal way of the present utility model, the outfan of described second clutch axle assembly 60 is fixed with the Nine gears 9, are provided with the first support shaft 13 in described casing 100, the first support shaft 13 are fixed with the tenth gear 10, the tenth tooth Wheel 10 engages with the 9th gear 9, is provided with the second support shaft 90 in described transfer case assembly, and the two ends of the second support shaft 90 are rotatable Be arranged in described casing 100, the second support shaft 90 is provided with the 11st gear 11 engaged with the tenth gear 10, passes through Tenth gear the 10 and the 11st gear 11, by the power transmission of gear to the second support shaft 90, also includes the first umbrella tooth Wheel 12, the first bevel gear 12 is fixed on the middle part of the second support shaft 90, is provided with output shaft, output shaft in described casing 100 Portion is rotatably connected in described casing, and one end of output shaft is the output unit 95 stretching out described casing 100, and the other end is The bevel gear part 94 coordinated with the first bevel gear 12.As a kind of optimal way of the present utility model, described second support shaft 90 Two ends are connected in described casing 100 by clutch shaft bearing 91 and the second bearing 92 respectively.Compared to cantilever of the prior art Formula structure, uses structure of the present utility model, the second support shaft 90 can dispersed first bevel gear 12 active force and not Easy fracture such that it is able to ensure stable output.

In such scheme, retreat clutch 31, advance clutch 32, low speed clutch 61 and high speed clutch Mechanism 62 is identical with the cooperation principle of corresponding gear, and it mainly includes piston, friction plate, shaping piece and back-moving spring, logical Cross hydraulic oil and make friction plate and shaping piece pressing so that gear rotates with corresponding clutch shaft assembly, carries out power transmission.

When using the technical solution of the utility model, its power transmission process is as follows:

1, ease astern: electromotor-fluid torque-converter-first clutch axle assembly the-the first gear the-the second gear-the first Power transmission shaft the-the six gear the-the seven gears-second driving shaft the-the three gear the-the four gears-second clutch axle assembly the-the nine tooth Wheel the-the ten gear-the 11 gear the-the first bevel gear-output shaft.

2, high reverse: electromotor-fluid torque-converter-first clutch axle assembly the-the first gear the-the second gear-the first Power transmission shaft the-the six gear the-the seven gears-eighth gear-second clutch axle assembly the-the nine gear the-the ten gear-the 11 tooth Wheel the-the first bevel gear-output shaft.

3, low-speed forward: electromotor-fluid torque-converter-first clutch axle assembly the-the five gear the-the seven gear-the second Power transmission shaft the-the three gear the-the four gears-second clutch axle assembly the-the nine gear the-the ten gear-the 11 gear the-the first umbrella Gear-output shaft.

4, advance at utmost speed: electromotor-fluid torque-converter-first clutch axle assembly the-the five gear the-the seven gear-the eight Gear-second clutch axle assembly the-the nine gear the-the ten gear-the 11 gear the-the first bevel gear-output shaft.

Above-mentioned transmission road strength is succinct, can realize the walking of excavator by controlling hydraulic oil.

As a kind of optimal way of the present utility model, described output shaft is vertically arranged with described second support shaft 90, Output shaft is rotatably connected in described casing 100 by the 3rd bearing 95.

As a kind of optimal way of the present utility model, described casing includes in order to accommodating described fluid torque-converter 70 and institute State the first housing 21 of oil pump 80, in order to the second housing 22 of accommodating described gear and total in order to accommodating described transfer case The 3rd housing 23 become, the side of the second housing 22 that the first housing 21 is fixed by screw, the 3rd housing 23 is solid by screw It is scheduled on the opposite side of the second housing 22.

As a kind of optimal way of the present utility model, described fluid torque-converter includes housing 72, pump impeller 73, guide wheel, whirlpool Wheel, power shaft 71 and output shaft 75, power shaft 71 is connected with driving engine, specifically arranges connecting plate on casing 100 78, electromotor is in transmission connection with this connecting plate 78 by flywheel, and output shaft 75 is in transmission connection with the input of described gear, Being provided with conduit 74 on pump impeller 73, output shaft 75 is located in conduit 74, and conduit 74 stretches out housing 72 and is rotatably arranged in In described casing 100, described oil pump 80 is in transmission connection with this conduit 74 and is positioned at outside housing 72, and specifically oil pump 80 set is through this In conduit 74, oil pump 80 and conduit 74 are by bonded.Using this structure, electromotor drives pump impeller 73 turns by power shaft 71 Dynamic, oil pump 80 directly has pump impeller to drive to provide pressure oil to system.Wherein guide wheel and turbine structure all can use prior art In conventional structure, I will not elaborate.As preferably, described oil pump is crescent gear pump, and crescent gear pump passes through key It is set in described conduit 74.

As a kind of optimal way of the present utility model, also including fairlead, fairlead includes installation portion 76 and is connected to Guide part 77 on installation portion 76, guide part 77 is arranged between described output shaft 75 and the inwall of described conduit 74.

Product form of the present utility model is not limited to this case diagram and embodiment, and anyone carries out similar thinking to it Suitably change or modification, all should be regarded as without departing from patent category of the present utility model.

Claims (3)

1. a transfer case attachment structure on the excavator improved, including casing, gear and transfer case assembly, variable-speed motor The outfan of structure is in transmission connection with the input of transfer case assembly, it is characterised in that: described gear and described transfer case are total Becoming to may be contained within described casing, be provided with the second support shaft in described transfer case assembly, the two ends of the second support shaft are rotationally Being arranged in described casing, the second support shaft is in transmission connection with the outfan of described gear, also includes the first bevel gear, the One bevel gear is fixed on the middle part of the second support shaft, is provided with output shaft in described casing, and output shaft is rotatably coupled In described casing, one end of output shaft is the output unit stretching out described casing, and the other end is to coordinate with the first bevel gear Bevel gear part.

2. transfer case attachment structure on the excavator improved as claimed in claim 1, it is characterised in that: described second support shaft Two ends be connected in described casing by clutch shaft bearing and the second bearing respectively.

3. transfer case attachment structure on the as claimed in claim 2 excavator improved, it is characterised in that: described output shaft with Described second support shaft is vertically arranged, and described output shaft is rotatably connected in described casing by the 3rd bearing.