CN1432501A

CN1432501A - Great-tonnage low-speed tractor

Info

Publication number: CN1432501A
Application number: CN 02139815
Authority: CN
Inventors: 张卫东; 彭劲松; 伍小轲
Original assignee: CHANGSHA KAIRUI HEAVY INDUSTRIAL MACHINERY Co Ltd
Current assignee: CHANGSHA KAIRUI HEAVY INDUSTRIAL MACHINERY Co Ltd
Priority date: 2002-12-10
Filing date: 2002-12-10
Publication date: 2003-07-30

Abstract

The great-tonnage low-speed tractor includes chassis with front drive axle, back drive axle, driver cab and engine, the engine is connected via hydraulic torque converter to gear box, the gear box is connected to front and back drive axles via the transmission shaft, and the chassis includes the front chassis and the back chassis hinged together. The tractor has high low speed stability, good heavy load starting characteristic, smooth gear shift, all-wheel drive, great traction, disc brack suitable for frequency braking, light and flexible steering and small turn radius. It is suitable for iron and steel works and other enterprise to perform low-speed short-distance great-tonnage transportation in narrow space.

Description

A kind of large-tonnage low speed tractor truck

Technical field

The present invention relates to wheel tractor, belong to transport vehicle.

Background technology

At present, long-distance, express highway transportation that the design of normal traction car is mainly used in, driving system mainly adopts mechanical drive mode.

Extraordinary transportation has the advantages that tonnage is big, speed is low, haul distance is short, frequent heavy duty starts to walk in the factory such as iron and steel enterprise, harbour, and the road surface situation is better simultaneously.Under this traffic condition, adopt the normal traction car to have following shortcoming: 1. low-speed stability is poor; 2. frequent heavy duty starting, clutch damage is serious; 3. for producing big tractive force, dispose high-output engine, power dissipation is serious: 4. minimum turning radius is big, needs big operation place.

Summary of the invention

The objective of the invention is, develop large-tonnage low speed tractor truck, have good low-speed stability and be fit to the big cranking torque of heavy duty starting, gear shift steadily, the low speed tractive force is big, minimum turning radius is little and be suitable for that small space transports factory in.

Technical scheme of the present invention is, described large-tonnage low speed tractor truck comprises the vehicle frame that front driving axle and rear driving axle and operator's compartment and driving engine are housed, its design feature is, the takeoff output beam warp turbine transformer of driving engine joins with dynamic power shift gear box, the power take-off shaft of described dynamic power shift gear box is connected to forward and backward drive axle respectively and is realized all-wheel drive by corresponding transmission shaft, and described vehicle frame is divided between front vehicle frame and back vehicle frame two parts and this forward and backward vehicle frame for being articulated and connected.

Below the present invention made further specify.

Referring to Fig. 1 and Fig. 7, the present invention includes the vehicle frame that front driving axle 1 and rear driving axle 6 and operator's compartment 12 and driving engine 2 are housed, its design feature is, the takeoff output beam warp turbine transformer 3 of driving engine 2 joins with dynamic power shift gear box 4, the power take-off shaft of described dynamic power shift gear box 4 is connected to forward and backward drive axle 1,6 respectively by corresponding transmission shaft 5 and realizes that all-wheel drive, described vehicle frame are divided between front vehicle frame 8 and back vehicle frame 9 two parts and this forward and backward vehicle frame 8,9 and be articulated and connected (referring to Fig. 1).

Linkwork 13 before and after described in Fig. 1 between the vehicle frame 8,9 can adopt respectively as Fig. 4, structure shown in Figure 5, and then the traction seat 15 (referring to Fig. 1) at vehicle frame 9 rear portions can adopt the prior art structure of hinged seat shown in Figure 6.

Large-tonnage low speed tractor truck of the present invention also can adopt all-hydraulic power steering, makes the steering operation light and flexible; Braking can be adopted disc type brake mechanism, rapid heat dissipation, suitable frequent braking.

Principle of design of the present invention is, owing to adopted hydromechanical drive, thereby have good low-speed stability; Cranking torque is big, is fit to the heavy duty starting; Stepless gear shift, the impact that does not have gear shift to bring; Articulated frame, minimum turning radius is little, is fit to the transportation of on-site small space; All-wheel drive, propulsive effort is big; Adopt all-hydraulic power steering, the operation light and flexible; Disc type brake, rapid heat dissipation is fit to Fraquent start; The reasonable power of engine configurations (for example 158KW), the low speed tractive force is big.

As known from the above, the present invention is a kind of large-tonnage low speed tractor truck, it has good low-speed stability, the impact that heavy duty starts to walk, do not have gear shift to produce, minimum turning radius is little and be suitable for on-site small space transportation, propulsive effort and low speed tractive force are big, turn to light and flexible, brake rapid heat dissipation and suitable Fraquent start; Therefore, tractor truck of the present invention can fully satisfy the extraordinary traffic requirements of user such as iron and steel enterprise, at the harbour, and the use of also can being satisfied with of big part transportation place.

Description of drawings:

Fig. 1 is the positive TV structure of an embodiment of the present invention;

Fig. 2 is the structure of looking up of vehicle shown in Figure 1;

Fig. 3 is a turn inside diameter status architecture shown in Figure 2;

Fig. 4 and Fig. 5 are respectively that A-A among Fig. 1, B-B are to sectional structure;

Fig. 6 be among Fig. 1 C-C to sectional structure;

Fig. 7 is a system of vehicle transmission constructional drawing of the present invention.

In the accompanying drawings:

The 1-front driving axle, 2-driving engine, 3-turbine transformer

The 4-Powershift transmission, the 5-transmission shaft, the 6-rear driving axle,

The 7-tire, the 8-front vehicle frame, 10-front vehicle frame pin jointed end,

Vehicle frame pin jointed end behind the 11-, the 12-operator's compartment, the 13-linkwork,

14-ships and resell on another market (jointed shaft), 15-traction seat (linkwork)

The specific embodiment

According to the tractor truck of the present invention of accompanying drawing and said structure, engine power configuration 158KW, 170 tons of maximum trailing weight, fully loaded maximum speed 10Km/h, tractive force limit 158KN; Dependency structure technical parameter and configuration are with reference to the corresponding employing of commercially available (homemade) ZL50 type wheel type loader.

Claims

1, a kind of large-tonnage low speed tractor truck, comprise the vehicle frame that front driving axle 1 and rear driving axle 6 and operator's compartment 12 and driving engine 2 are housed, it is characterized in that, the takeoff output beam warp turbine transformer 3 of driving engine 2 joins with dynamic power shift gear box 4, the corresponding transmission shaft 5 of the takeoff output beam warp of described dynamic power shift gear box 4 is connected to forward and backward drive axle 1,6 respectively and realizes that all-wheel drive, described vehicle frame are divided between front vehicle frame 8 and back 9 liang of parts of vehicle frame and this forward and backward vehicle frame 8,9 for being articulated and connected.

2, large-tonnage low speed tractor truck according to claim 1 is characterized in that, it adopts hydro-steering and disc type brake mechanism.