CN203293930U

CN203293930U - Three-fulcrum electric tractor

Info

Publication number: CN203293930U
Application number: CN2013203191641U
Authority: CN
Inventors: 余晓贤; 李杨; 蒋钟伟; 马琦晨
Original assignee: Zhejiang EP Equipment Co Ltd
Current assignee: Zhejiang EP Equipment Co Ltd
Priority date: 2013-06-03
Filing date: 2013-06-03
Publication date: 2013-11-20
Anticipated expiration: 2023-06-03

Abstract

The utility model discloses a three-fulcrum electric tractor which is mainly composed of a steering system (1), a driving system (2),a tractor frame (3), an operation system (4), a covering piece (5) and an electric system (6). The thee-fulcrum mode is applied. A single front wheel is arranged in the center of the front portion of the tractor frame. Two rear wheels are driving wheels. The design that a drive axle and a gearbox are integrated is applied. Driving power is provided by a driving motor installed on the gearbox. Two powerful springs are additionally arranged on the connection portion of the whole driving system and the tractor frame, and therefore the cushioning function is achieved. The single front wheel is the steering wheel. The steering function is achieved by a front wheel installation base through a big steering bearing. Front wheel cushioning is achieved between the front wheel and the front wheel installation base through the combined action of a rotating shaft and rubber springs.

Description

Three fulcrum electric tractors

Technical field

The utility model relates to a kind of tractor truck, relates in particular to a kind of three fulcrum electric tractors.

Background technology

Along with the development of logistics and the raising of environmental demands, the market demand of electrically propelled traction vehicle more and more

Greatly.All countries that environmental protection is paid much attention to, electrically propelled traction vehicle just has ample scope for one's abilities.Tractor truck in China about 80% still is used as power with fuel oil, but along with the putting more effort of environmental improvement, relevant department is just considering to replace gas tractor with electrically propelled traction vehicle.Electrically propelled traction vehicle has the advantages such as energy conversion efficiency is high, noise is little, non-exhaust emission, control convenience.Meet all kinds of logistics transportation delivery system needs, can significantly improve production operation efficiency.Yet the movable motor of tractor truck in the market and controller thereof are all DC techniques, adopt DC machine to drive, and need the periodic replacement brush, and maintenance rate is high.And, because front-wheel does not have damping or uses common spring, behaviour person is produced tired when operation, and Vehicle Driving Cycle is unstable.Storage battery generally is placed on the drive axle top in addition, and the car load center of gravity is higher, makes the stability of car load greatly reduce.

Summary of the invention

The utility model is for deficiency of the prior art, provides a kind of operation comfortable, reliable and stable and turn to three fulcrum electric tractors flexibly.

The technical scheme that its technical matters that solves the utility model adopts is:

Three fulcrum electric tractors, comprise steering swivel system, drive system, vehicle frame, operating system and electric system, steering swivel system and operating system are positioned at the front portion of vehicle frame, drive system and electric system are positioned at the rear portion of vehicle frame, steering swivel system comprises a wheel flutter, drive system comprises the tire on the drive wheels assembly, and the tire on the drive wheels assembly is comprised of two drive wheels, and a wheel flutter and two drive wheels form three dot patterns.

Steering swivel system is by turning to large bearing to be connected with vehicle frame.

As preferably, steering swivel system also comprises steering base weldment, swing arm, rubber spring, S. A. weldment, turns to sprocket wheel and chain, turns to sprocket wheel to be connected with chain gear, drives the rotation of wheel flutter.

As preferably, the steering base weldment is connected by the S. A. weldment with swing arm.Swing arm and the as a whole connection of S. A. weldment.

As preferably, between steering base weldment and swing arm, rubber spring is installed.

As preferably, drive system also comprises drive motor and back axle.

As preferably, between drive system and vehicle frame, be provided with damping spring, damping spring supports back axle.

As preferably, drive motor is AC driven motor.

As preferably, the storage battery casing is placed in the vehicle frame middle part.Center of gravity is lower, and the car load riding stability is better.

The beneficial effects of the utility model are: electrically propelled traction vehicle, take storage battery as propulsion source, drives AC traction electric motor by alternating-current controller, adopts car formula drive manner, easy to use, the car load storage battery is arranged in vehicle middle part (drive axle front), and center of gravity is low, and the driving stability performance is good.Front steering system and rear wheel drive system have all been carried out the damping processing, and it is very big that car load is driven space, and the personnel operation comfort of making improves greatly.

The accompanying drawing explanation

Fig. 1 is the structural representation of three fulcrum electric tractors.

Fig. 2 is three fulcrum electric tractor steering swivel system front views.

Fig. 3 is three fulcrum electric tractor steering swivel system birds-eye vieies.

Fig. 4 is three fulcrum electric tractor drive system schematic diagrams.

Fig. 5 is the partial enlarged drawing of three fulcrum electric tractor drive system A shown in Figure 4.

The specific embodiment

Below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail:

In the embodiment shown in fig. 1, the utility model three fulcrum electric tractors are comprised of steering swivel system 1, drive system 2, vehicle frame 4, operating system 3, cover panel 5 and electric system 6.The utility model adopts three dot patterns, and single wheel flutter 10 is placed in vehicle frame 4 front central positions, i.e. front-wheel, and two trailing wheels are arranged in vehicle frame 4 both sides, rear portion, by drive axle, are driven and are turned to.Two trailing wheels are drive wheel, adopt drive axle and the design of change speed gear box integral type, by the drive motor that is arranged on change speed gear box, provide propulsive effort, and whole drive system and vehicle frame junction add two strong shock-absorbing springs 24 as shown in Figure 5, reach cushioning effect.

The storage battery casing is placed in the vehicle frame middle part, and center of gravity arranges minimum, makes whole vehicle stability increase.This car uses alternating current dynamo, powerful, easy maintenance.Alternating current dynamo can be realized the electric braking effect, and the car load braking effect is stronger, and the machine made moving plate is down to wearing and tearing minimum, and during brake, the motor reversal braking, produce electric discharge, can extend battery-using time.Driving space spaciousness, can easily drive for a long time.Car load face shield and drive axle upper cover are opened simply, the maintenance and inspection easy maintenance.Adopt electronic accelerator pedal, starting is accelerated to control steadily, and is highly stable while travelling, effectively degree of lessening fatigue.

Fig. 2 and embodiment illustrated in fig. 3 in, steering swivel system 1 is by turning to large bearing 11, steering base weldment 12, swing arm 13, rubber spring 14, S. A. weldment 15, turning to sprocket wheel 16, chain 17 to form.Whole steering swivel system, by turning to large bearing 11 to be connected with vehicle frame 4, under the drive that turns to sprocket wheel 16 and chain 17, is realized the rotation of wheel flutter 10.Steering base weldment 12 is realized being connected by S. A. weldment 15 with swing arm 13, and rubber spring 14 is housed between it, to reach the effect of supporting buffering, effectively realizes shock-proof effect.What major diameter turned to that large bearing 11 coordinates suitable size turns to sprocket wheel 16, and whole steering swivel system 1 is not in the situation that have extra power-assisted to realize comparatively comfortable steering operation, and cost performance is higher.Simultaneously, the use of rubber spring 14, make this car when normally travelling, and shock-proof effect is better, and rubber spring 14 replaces common spring in the past simultaneously, makes it more durable, longer service life.The front-wheel mounting seat is by turning to large bearing 11 to realize turning function, and the combined action by rotating shaft and rubber spring 14 between front-wheel and front-wheel mounting seat realizes the front-wheel damping.

In embodiment shown in Figure 4 and Figure 5, drive system 2 forms an integral body by AC driven motor 22, bridge case integral type back axle 21 and tire on the drive wheels assembly 23, by the rotating shaft tie bolt, with vehicle frame 4, is connected.Between drive system 2 and vehicle frame 4, installed damping spring 24 additional, supported on both sides back axle 21, can normally travel on the road surface of jolting, reach the actv. damping.Front and back all install respectively rubber spring 14 and damping spring 24 additional, make the stability of car load be greatly improved, and make the effect of travelling of the electrically propelled traction vehicle of three fulcrums reach splendid.

Electrically propelled traction vehicle can be carried additionally a plurality of dollies, is applicable to carry out in the venue logistics transportation, can increase substantially article carrying efficiency, energy-conserving and environment-protective again simultaneously.

In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.

Claims

1. three fulcrum electric tractors, comprise steering swivel system (1), drive system (2), vehicle frame (4), operating system (3) and electric system (6), steering swivel system (1) and operating system (3) are positioned at the front portion of vehicle frame (4), drive system (2) and electric system (6) are positioned at the rear portion of vehicle frame (4), it is characterized in that: steering swivel system (1) comprises a wheel flutter (10), drive system (2) comprises tire on the drive wheels assembly (23), tire on the drive wheels assembly (23) is comprised of two drive wheels, a wheel flutter (10) and two drive wheels form three dot patterns.

2. tractor truck according to claim 1, it is characterized in that: steering swivel system (1) also comprises steering base weldment (12), swing arm (13), rubber spring (14), S. A. weldment (15), turns to sprocket wheel (16) and chain (17), turn to sprocket wheel (16) and chain (17) to be in transmission connection, drive the rotation of wheel flutter (10).

3. tractor truck according to claim 1 and 2, it is characterized in that: steering swivel system (1) is by turning to large bearing (11) to be connected with vehicle frame (4).

4. tractor truck according to claim 2, is characterized in that: between steering base weldment (12) and swing arm (13), rubber spring (14) is installed.

5. tractor truck according to claim 1, it is characterized in that: drive system (2) also comprises drive motor (22) and back axle (21).

6. tractor truck according to claim 5, is characterized in that: between drive system (2) and vehicle frame (4), be provided with damping spring (24), damping spring (24) support back axle (21).

7. tractor truck according to claim 5 is characterized in that: drive motor (22) is AC driven motor.

8. tractor truck according to claim 1, is characterized in that: in the middle part of vehicle frame (4), be provided with accumulator box.