阅读说明：本技术 一种电动牵引车 (Electric tractor ) 是由 刘维刚 于 2021-01-06 设计创作，主要内容包括：本发明属于冶金运输设备领域,具体涉及一种电动牵引车,包括车体、车棚、轮对、电缆卷筒、走行传动机构和车钩,其特征在于,走行传动机构包括减速箱体、电机和联轴器,所述电机的输出轴经联轴器与减速箱体的输入轴相连接,所述减速箱体上设有轴心垂直于输入轴的一号轴、二号轴、三号轴和轮对,所述输入轴通过伞齿轮副与一号轴相连接,一号轴通过第一齿轮副与二号轴相连接,二号轴通过第二齿轮副与三号轴相连接,三号轴通过第三齿轮副与轮对相连接。与现有技术相比,本发明的优点是：体积更小,成本更低,实现了车体结构的大幅简化,两个轮对均有动力驱动,增加了牵引车的牵引功率,使牵引车的性能完全能满足冶金企业铁水罐车的牵引要求。(The invention belongs to the field of metallurgical transportation equipment, and particularly relates to an electric tractor which comprises a tractor body, a shed, a wheel set, a cable drum, a traveling transmission mechanism and a coupler. Compared with the prior art, the invention has the advantages that: the volume is littleer, and the cost is lower, has realized simplifying by a wide margin of body structure, and two wheel pairs all have power drive, have increased the traction power of tractor, make the performance of tractor can satisfy the traction requirement of metallurgical enterprise's ladle car completely.)

1. The utility model provides an electric tractor, includes automobile body, bicycle shed, wheel pair, cable drum, walks capable drive mechanism and coupling, is equipped with the bicycle shed on the automobile body, and one side of bicycle shed is equipped with the cable drum, and the automobile body has two wheel pairs, respectively establishes a coupling around the automobile body, and the wheel pair is connected with walking drive mechanism, and its characterized in that walks capable drive mechanism and includes reduction box, motor and shaft coupling, the output shaft of motor is connected with the input shaft of reduction box through the shaft coupling, be equipped with axle center perpendicular to input shaft's a axle, No. two axles, No. three axles and wheel pair on the reduction box, the input shaft passes through bevel gear pair and is connected with No. one axle, and No. one axle is connected with No. two axles through first gear pair, and No. two axles are connected with No. three axles through second gear pair, and No. three axles are connected with the wheel pair through third gear pair.

2. The gear transmission-based power shaft device according to claim 1, wherein the motor is a servo motor and is wirelessly controlled by a remote controller.

3. The electric tractor as claimed in claim 1, wherein the first axle, the second axle, the third axle and the wheel pair are arranged in an L-shape in sequence and in space.

4. The electric tractor according to claim 1, wherein the coupling is any one of an elastic sleeve pin coupling, an elastic pin tooth coupling, a quincunx coupling, a crowned tooth coupling, and a serpentine spring coupling.

5. The electric tractor according to claim 1, wherein the coupling is provided with a band-type brake mechanism.

6. The electric tractor according to claim 5, wherein the band-type brake mechanism is provided with a cylinder piston connecting end or a hydraulic cylinder piston connecting end.

7. The electric tractor as claimed in claim 1, wherein the wheel sets are connected at both ends to bearing seats, and the bearing seats are connected to the tractor body through spring arrays.

8. The electric tractor according to claim 7, wherein the spring is a compound cylindrical spring nested inside and outside.

9. The electric tractor according to claim 1, wherein the front and/or rear portion of the vehicle body is provided with weights arranged in bilateral symmetry.

10. The electric tractor of claim 1, wherein the spindle of the cable drum is coupled to a torque motor, the torque motor being electrically coupled to a control box, the control box being electrically coupled to a power transmission box.

Technical Field

The invention belongs to the field of metallurgical transportation equipment, and particularly relates to an electric tractor.

Background

The iron ladle car is a special vehicle for transporting blast furnace molten iron to steel plant, pig casting machine and foundry to make steel, cast iron block or cast ingot mould, etc. and its development direction is large-scale and high-tonnage. The alignment tractor is suitable for alignment operation of molten iron tank cars, torpedo cars, slag tank cars and the like in iron and steel enterprises. The alignment tractor mainly comprises a tractor body, a driving part, a bogie and an electric control part, can replace an internal combustion locomotive to finish the alignment operation of a hot metal ladle, finishes remote alignment through remote control, is convenient to operate, is accurate and reliable in alignment, is high in efficiency, and can prevent misoperation and molten iron splashing. At present, most domestic alignment tractors adopt power batteries as power and adopt a direct-current transmission technology, a B0-B0 shaft type tractor adopts a secondary suspension bogie, and a short-tail coupler buffer device is arranged at the end of the tractor.

The utility model discloses a split type molten iron tractor with application number 201720684964.1, wherein a rail flat trailer is used for placing a molten iron tank, the rail flat trailer is connected with a traction beam, and the front end of the traction beam extends from the bottom of the rail tractor to the front end of the rail tractor; the track tractor comprises two pairs of wheels, a bottom frame, a motor, a speed reducer, a transmission mechanism, a car frame and a hinge mechanism; the chassis is arranged above the wheels, the frame is covered above the chassis, the motor and the speed reducer are arranged on the chassis, and the motor drives the wheels through the speed reducer and the transmission mechanism. The tractor without the bogie structure is widely used due to simple structure and easy control, but the tractor with the bogie structure has the problem of insufficient power due to the form of a single driving shaft, and meanwhile, the traditional driving matching mode of the motor, the speed reducer and the transmission mechanism also has the problems of large volume and high cost, and can not meet the requirements of customers.

Disclosure of Invention

The invention aims to provide an electric tractor, which overcomes the defects of the prior art, adopts a more optimized transmission mechanism to drive a tractor wheel pair, has smaller volume and lower cost, simplifies the structure of a tractor body, increases the driving power and ensures that the performance of the tractor meets the traction requirement of a molten iron tank car of a metallurgical enterprise.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides an electric tractor, includes automobile body, bicycle shed, wheel pair, cable drum, walks capable drive mechanism and coupling, is equipped with the bicycle shed on the automobile body, and one side of bicycle shed is equipped with the cable drum, and the automobile body has two wheel pairs, respectively establishes a coupling around the automobile body, and the wheel pair is connected with walking drive mechanism, and its characterized in that walks capable drive mechanism and includes reduction box, motor and shaft coupling, the output shaft of motor is connected with the input shaft of reduction box through the shaft coupling, be equipped with axle center perpendicular to input shaft's a axle, No. two axles, No. three axles and wheel pair on the reduction box, the input shaft passes through bevel gear pair and is connected with No. one axle, and No. one axle is connected with No. two axles through first gear pair, and No. two axles are connected with No. three axles through second gear pair, and No. three axles are connected with the wheel pair through third gear pair.

The motor is a servo motor and is controlled by a remote controller in a wireless mode.

The first shaft, the second shaft, the third shaft and the wheel pair are arranged in an L shape in sequence.

The coupler is any one of an elastic sleeve pin coupler, an elastic pin tooth coupler, a quincunx coupler, a drum-shaped tooth coupler and a serpentine spring coupler.

And the coupler is provided with a band-type brake mechanism.

And the band-type brake mechanism is provided with a cylinder piston connecting end or a hydraulic cylinder piston connecting end.

The two ends of the wheel pair are connected with the bearing seats, and the bearing seats are connected with the vehicle body through the spring arrays.

The spring is a composite cylindrical spring sleeved inside and outside.

The front part and/or the rear part of the vehicle body are/is provided with counterweights which are symmetrically arranged.

The spindle of the cable drum is connected with a torque motor, the torque motor is electrically connected with a control box, and the control box is electrically connected with a power transmission box.

Compared with the prior art, the invention has the following beneficial effects:

1) the traction wheel pair is driven by the optimized traveling transmission mechanism, so that the volume is smaller, the cost is lower, the structure of the car body is greatly simplified, the two wheel pairs are driven by power, the traction power of the tractor is increased, and the performance of the tractor can completely meet the traction requirement of the molten iron tank car of a metallurgical enterprise.

2) The conventional gear reduction structure and the wheel set are integrated to form the power shaft module assembly, so that the power shaft module assembly is convenient to produce and assemble, has the advantages of small volume and low cost, and can be expanded to be applied to other tractors with various models or hot metal ladle cars.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a schematic view of the running gear in an embodiment of the invention;

FIG. 4 is a left side view of FIG. 3;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 6 is a schematic view of a cable reel structure in an embodiment of the present invention.

In the figure: 1-a vehicle body; 2-a shed; 3-a cable drum; 4-wheel pair; 5-a walking transmission mechanism; 6, coupler; 7-a band-type brake mechanism; 8-a counterweight; 9-bevel gear pair; 10-a bearing seat; 11-reduction box body; 12-a motor; 13-a coupler; 14-a spring; 15-an input shaft; 16-shaft I; 17-shaft number two; 18-third axis; 19-a torque motor; 20-a first gear pair; 21-a second gear pair; 22-third gear pair; 23-a control box; 24-a power transmission box; 25-base.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, which are schematic structural views of an embodiment of the electric tractor of the present invention, the electric tractor includes a body 1, a shed 2, wheel sets 4, a cable drum 3, a traveling transmission mechanism 5 and a coupler 6, the body 1 is provided with the shed 2, one side of the shed 2 is provided with the cable drum 3, two wheel sets 4 are provided below the body 1, the front and the rear of the body 1 are respectively provided with the coupler 6, the wheel sets 4 are connected with the traveling transmission mechanism 5, the traveling transmission mechanism 5 includes a reduction box 11, a motor 12 and a coupler 13, an output shaft of the motor 12 is connected with an input shaft 15 of the reduction box 11 through the coupler 13, the reduction box 11 is provided with a first shaft 16, a second shaft 17, a third shaft 18 and the wheel sets 4, the axis of the first shaft 16 is perpendicular to the input shaft 15 through a bevel gear pair 9, the first shaft 16 is connected with the second shaft 17 through a first gear pair 20, the second shaft 17 is connected with the third shaft 18 through a second gear pair 21, the third shaft 18 is connected to the wheel set 4 via a third gear pair 22. The first gear pair 20, the second gear pair 21 and the third gear pair 22 are all hard-toothed cylindrical gears.

The motor 12 is a servo motor and is controlled by a remote controller in a wireless way, and the remote controller can be operated by an operator in a remote way, so that the accuracy of traction alignment is ensured. The servo motor can control the speed and position accuracy accurately, and can convert the voltage signal into torque and rotating speed to drive a control object. The rotation speed of the rotor of the servo motor is controlled by an input signal and can quickly respond, the servo motor is used as an actuating element in an automatic control system, has the characteristics of small electromechanical time constant, high linearity and the like, and can convert a received electric signal into angular displacement or angular speed on a motor shaft for output. The first shaft 16, the second shaft 17, the third shaft 18 and the wheel set 4 are arranged in an L-shaped space in sequence, the L-shaped space arrangement is beneficial to reasonably utilizing the space, and the structure is more compact.

The coupling 13 is any one of an elastic sleeve pin coupling, an elastic pin tooth coupling, a quincunx coupling, a drum tooth coupling and a serpentine spring coupling, and can meet the technical purpose of the invention.

The coupler 13 is provided with a band-type brake mechanism 7. The band-type brake mechanism 7 is provided with a cylinder piston connecting end or a hydraulic cylinder piston connecting end, and can realize automatic braking under control.

The two ends of the wheel set 4 are connected with the bearing seats 10, and the bearing seats 10 are connected with the vehicle body 1 through the spring 14 array. The spring is a composite cylindrical spring sleeved inside and outside, and can provide larger supporting force.

The front part and the rear part of the vehicle body 1 are provided with the counter weights 8 which are arranged in bilateral symmetry, and the counter weights can increase the weight of the vehicle body, thereby improving the traction force.

The mandrel of the cable drum 3 is connected with a torque motor 19, the torque motor 19 is electrically connected with a control box 23, the control box is electrically connected with a power transmission box 24, and the torque motor 19, the control box 23 and the power transmission box 24 are connected with the shed 2 through a base 25. The power transmission box is used for power distribution and voltage regulation, so that the output voltage of the power transmission box meets the requirements of the torque motor 19 and the motor 12. The control box is used for adjusting and controlling the torque motor 19 and the motor 12 to enable the rotating speed of the torque motor to meet the traction requirement. The torque motor has the characteristics of low rotating speed, large torque, strong overload capacity, quick response, good characteristic linearity, small torque fluctuation and the like, and can directly drive a load to save a speed reduction transmission gear, thereby improving the running precision of the system.

The above embodiments are merely specific examples selected for illustrating the objects, technical solutions and advantages of the present invention in detail, and should not be construed as limiting the scope of the present invention, and various modifications, equivalent substitutions and improvements can be made without departing from the spirit and principle of the present invention.