CN111169366A

CN111169366A - Road train

Info

Publication number: CN111169366A
Application number: CN202010138651.2A
Authority: CN
Inventors: 王飞; 瞿绘军
Original assignee: Yangzhou CIMC Tonghua Special Vehicles Co Ltd
Current assignee: Yangzhou CIMC Tonghua Special Vehicles Co Ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-05-19

Abstract

The invention provides a road train, which comprises a tractor, a trailer and a semitrailer; the receiving trailer comprises a tank box, a first frame, wheels, a second saddle and a first traction pin; the tank box is arranged on the upper side of the front part of the first frame; the wheels are arranged on the lower side of the rear part of the first frame; the second saddle is arranged on the upper side of the rear part of the first frame, so that the rear part of the first frame forms a bearing platform; the first traction pin is fixed on the lower side of the front part of the first frame and can be connected with the first saddle in a matching way to realize the hanging connection of a trailer and the tractor; thereby the messenger accepts the trailer not only can articulate on the first saddle of the place ahead tractor, can also articulate the semitrailer at rear through accepting the second saddle on the first frame rear portion of trailer moreover to form the highway train that pulls many trailers through a tractor, and then avoid a tractor only to pull a trailer and the tractor wasting of resources that leads to the fact, improve the availability factor of tractor, practice thrift navigating mate's cost of labor.

Description

Road train

Technical Field

The invention relates to the technical field of vehicles, in particular to a road train.

Background

With the continuous expansion of the types and the demand of chemical products, the market of the chemical liquid transportation semitrailer is very wide. As shown in fig. 1, for chemical liquid transportation semitrailers, a tractor 5 pulls a semitrailer 6.

The problems faced by the current tractor of this type for towing a semitrailer are: the waste of tractor resources, the multiplied increase in the number of drivers, and the increase in the transportation cost of users. The traction force of the same tractor can completely pull two or more trailers, one tractor can only pull one semitrailer at present, and a plurality of semitrailers need a plurality of tractors to pull, so that the labor cost of drivers is wasted, and the tractor resources are also wasted.

Disclosure of Invention

The invention aims to provide a road train which can pull a plurality of trailers by one tractor so as to improve the use efficiency of the tractor and save the labor cost of drivers.

In order to solve the technical problem, the invention provides a road train which comprises a tractor, a trailer and a semitrailer; the rear part of the tractor is provided with an extension frame, and the upper side of the extension frame is provided with a first saddle; the receiving trailer comprises a tank box, a first frame, wheels, a second saddle and a first traction pin; the tank box is arranged on the upper side of the front part of the first frame; the wheel is mounted on the lower side of the rear part of the first frame; the second saddle is arranged on the upper side of the rear part of the first frame, so that the rear part of the first frame forms a bearing platform; the first traction pin is fixed on the lower side of the tank box close to the front end and can be matched and connected with the first saddle to realize the hanging connection of the trailer and the tractor; the semitrailer comprises a semitrailer body and a second traction pin; the second traction pin is fixedly connected with the semitrailer main body and can be connected with the second saddle in a matched mode to achieve the fact that the semitrailer is connected to the bearing platform in a hanging mode.

Further, the device also comprises a platform truck; the flatcar comprises a second frame, wheels and a third saddle; the third saddle is arranged on the upper side of the second frame; the wheels are arranged on the lower side of the second frame; the front end of the second frame is provided with a connecting part;

the tail part of the semitrailer is provided with a connecting matching part which can be matched and connected with the connecting part so as to realize the connection of the platform truck to the semitrailer;

the semitrailer has a plurality ofly, the second towing pin can with the third saddle cooperation is connected in order to realize the semitrailer with the articulate of flatbed car.

Further, the flatbed is plural.

Further, the connecting part comprises a connecting frame and a connecting pin;

one end of the connecting frame is hinged to the front end of the second frame, so that the connecting frame can swing up and down around the hinged position; the other end of the connecting frame is provided with a first pin hole;

the connecting matching part is provided with a second pin hole, and the connecting pin can be inserted into the first pin hole and the second pin hole simultaneously to connect the semitrailer and the platform truck.

Further, the connecting portion further comprises a first leg, the first leg is hinged to the connecting frame, and the first leg is used for supporting the connecting frame in a horizontal state when swinging to a vertical state.

Furthermore, the rear end of the trailer and the front end of the semitrailer are respectively provided with an electric circuit mounting plate which can be mutually electrically connected and in gas communication.

Furthermore, the side parts of the bearing trailer and the semitrailer are both fixedly provided with crawling ladders.

Furthermore, the bottom of the trailer and the bottom of the semitrailer are respectively provided with a telescopic second support leg, and the trailer or the semitrailer can be supported in a horizontal state when the second support legs extend out.

Further, the adapting trailer and the semitrailer are connected with wheel shafts of the wheels through air suspension systems.

Further, the platform truck is provided with an electronic control brake system.

According to the technical scheme, the invention has at least the following advantages and positive effects:

the invention provides a road train, which is characterized in that a receiving trailer comprising a tank box, a first frame, wheels, a second saddle and a first traction pin is arranged, so that the receiving trailer can be connected to the first saddle of a tractor in front in a hanging manner, and a semitrailer in the rear can be connected by the second saddle on the rear part of the first frame of the receiving trailer, thereby forming the road train which uses one tractor to pull a plurality of trailers, further avoiding the waste of tractor resources caused by only one trailer pulled by one tractor, improving the use efficiency of the tractor and saving the labor cost of drivers.

Drawings

Fig. 1 is a side view schematic diagram of a tractor towing a semitrailer.

FIG. 2 is a schematic side view of a road train in accordance with an embodiment of the present invention.

Fig. 3 is a side view of a tractor according to an embodiment of the invention.

Fig. 4 is a schematic side view of a trailer according to an embodiment of the present invention.

Fig. 5 is a rear view of the trailer according to an embodiment of the present invention.

Fig. 6 is a side view schematic diagram of a semitrailer in accordance with an embodiment of the present invention.

Fig. 7 is a rear view schematic diagram of a semitrailer in accordance with an embodiment of the present invention.

FIG. 8 is a side view of a cart in accordance with an embodiment of the present invention.

Fig. 9 is a schematic side view of a connecting portion of the dolly according to an embodiment of the present invention.

Fig. 10 is a schematic top view of the structure of fig. 9.

The reference numerals are explained below: 1. a tractor; 11. extending the frame; 12. a first saddle; 2. carrying out trailer carrying; 21. a tank box; 22. a first frame; 23. a wheel; 24. a second saddle; 25. a first draw pin; 26. a receiving platform; 27. an electrical circuit mounting plate; 28. climbing a ladder; 29. a second leg; 3. a semi-trailer; 31. a second draw pin; 4. a platform truck; 41. a second frame; 42. a third saddle; 43. a connecting portion; 431. a connecting frame; 432. a first leg.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection unless expressly stated or limited otherwise. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 2, an embodiment of the present invention provides a road train, including a tractor 1, a trailer 2, a semitrailer 3, and a platform truck 4.

Referring to fig. 3, a tractor 1 provides traction power for train movement, and is also called as a train head in popular terms. The rear part of the tractor 1 is provided with an extension frame 11, and the upper side of the extension frame 11 is provided with a first saddle 12. The first saddle 12 can be coupled to a trailer to be coupled thereto, so as to couple the trailer to the rear of the tractor 1 and receive a portion of the weight of the trailer through the extension frame 11 of the tractor 1. The trailer is a vehicle for bearing goods, and a tank can be arranged on the trailer to transport chemical liquids such as natural gas and liquefied petroleum gas.

Referring to fig. 4 and 5, the receiving trailer 2 includes a tank box 21, a first frame 22, wheels 23, a second saddle 24, and a first kingpin 25. The tank box 21 is fixedly mounted on the front upper side of the first frame 22. The wheel 23 is rotatably mounted to the rear lower side of the first frame 22. The front and rear portions are only approximate divisions of the first frame 22 in the front-rear positional relationship, and are not necessarily absolute divisions or spaces. The second saddle 24 is disposed on the upper side of the rear portion of the first frame 22 such that the rear portion of the first frame 22 forms a receiving platform 26. A first towing pin 25 is fixed to the underside of the tank 21 near the front end and can be coupled with the first saddle 12 to effect hitching of the trailer 2 with the towing vehicle 1.

The rear end of the trailer 2 is provided with an electric circuit mounting plate 27 for transmitting compressed air and electric energy. The side of the receiving trailer 2 is fixedly provided with a ladder stand 28 for facilitating inspection and maintenance of the tank 21. The bottom of the trailer 2 is provided with a second telescopic leg 29, and the trailer 2 can be supported in a horizontal state when the second leg 29 extends out, so that the tractor 1 can be connected with the trailer 2. When the tractor 1 is connected with the trailer 2, the trailer 2 is supported in a horizontal state by using the second support leg 29, and then the tractor 1 is moved until the first saddle 12 and the first towing pin 25 are in proper positions to complete the matching connection. After the tractor 1 is connected with the trailer 2 in a matched mode, the second supporting leg 29 can be retracted, and the tractor 1 can normally drag the trailer 2 to move.

In this embodiment, the tank 21 is a special case of a train for storing and transporting chemical liquids, and the tank 21 may be replaced by a cargo compartment or a cargo grid for transporting ordinary cargo according to transportation and needs.

Referring to fig. 6 and 7, the semitrailer 3 may be a common semitrailer or a common semitrailer that is simply modified, for example, a connection fitting portion may be provided at a rear portion of the semitrailer 3. The semitrailer 3 in particular comprises a semitrailer body and a second traction pin 31. The second towing pin 31 is fixedly connected to the main body of the trailer and can be connected to the second saddle 24 in a matching manner, so that the trailer 3 can be hooked to the supporting platform 26 of the trailer 2. Further, a road train is formed in which one tractor 1 and a plurality of trailers are longitudinally connected in tandem.

The front end of the semitrailer 3 is provided with an electric circuit mounting plate 27 which can be electrically connected with and in gas communication with the electric circuit mounting plate 27 at the rear end of the trailer 2, so that a pressure air source is provided for a pneumatic brake system transmitted to the semitrailer 3 through the electric circuit mounting plate 27 on the trailer 2, and electric energy is provided for electric equipment such as a brake lamp. A ladder stand 28 is also fixedly arranged on the side of the semitrailer 3 to facilitate inspection and maintenance of the tank 21. The bottom of the semitrailer 3 is also provided with a second telescopic leg 29, and the second telescopic leg 29 can support the trailer 2 or the semitrailer 3 in a horizontal state when extending out. In a similar way, the second support leg 29 at the bottom of the semi-trailer 3 is used for supporting the semi-trailer 3 in the process of matching and connecting the second saddle 24 of the trailer 2 and the second towing pin 31 of the semi-trailer 3 so as to hang the semi-trailer 3 behind the trailer 2.

According to the invention, the trailer 2 comprising the tank box 21, the first frame 22, the wheels 23, the second saddle 24 and the first towing pin 25 is arranged, so that the trailer 2 can be connected to the first saddle 12 of the front tractor 1 in a hanging manner, and the rear semitrailer 3 can be connected to the second saddle 24 on the rear part of the first frame 22 of the trailer 2 in a hanging manner, thereby forming a road train for towing a plurality of trailers by one tractor 1, further avoiding the waste of resources of the tractor 1 caused by only towing one trailer by one tractor 1, improving the use efficiency of the tractor 1 and saving the labor cost of a driver.

The trailer 2 and the semitrailer 3 both adopt an air suspension system, the air suspension system is provided with a ground clearance sensor, a traveling computer can judge the height change of the vehicle body according to signals output by the ground clearance sensor, and then the air compression system and an exhaust valve are controlled to compress or extend an air bag, so that the ground clearance of the vehicle frame is reduced or increased, and the stability of the vehicle body in a high-speed state and the trafficability of complex road conditions are improved. The tank type vehicle has the advantages that the tank type vehicle for shipping chemical liquid is flammable, explosive, highly toxic, corrosive and the like, once the vehicle is in a bad running state due to poor road conditions, the chemical liquid of the whole vehicle is leaked, and the loss cannot be measured. Through adopting the air suspension, be applicable to chemical industry liquid tank vehicle more.

Referring to figures 8 and 9, the dolly 4 comprises a second frame 41, a wheel 23 and a third saddle 42. The third saddle 42 is fixedly provided to the upper side of the second frame 41. The wheel 23 is rotatably provided as a traveling mechanism on the lower side of the second frame 41. The front end of second frame 41 is equipped with connecting portion 43, and the afterbody of semitrailer 3 sets up connects the cooperation portion, connects the cooperation portion can be connected with connecting portion 43 cooperation, and then can realize connecting platform truck 4 in semitrailer 3 back, pulls by semitrailer 3 in the place ahead and connects the platform truck 4 removal thereafter. The third saddle 42 on the platform wagon 4 can also be connected with the second towing pin 31 of another semitrailer 3 in a matching manner, so that the semitrailer 3 can be hooked with the platform wagon 4.

The platform truck 4 also adopts an air suspension system, so that the connection stability between the front tank truck and the rear tank truck is improved, and the tank trucks can be more stably and safely connected under the braking and turning states.

The mud guard of the platform truck 4 is made of rubber. The carbon steel fender in the relevant scheme has the service life not longer than that of rubber when the road condition is poor, most importantly, stones on the road or scrap iron, small steel blocks and the like on a transportation site are easy to splash onto the fender in the driving process of a vehicle, and if the carbon steel fender is easy to form sparks, flammable and explosive chemical liquid is easy to combust and explode.

The platform truck 4 is also equipped with an EBS (electronically controlled brake system). The EBS is developed on the basis of an anti-lock braking system (ABS) and an anti-slip system (ASR) and is mainly used for improving the braking performance of an automobile, the EBS and other electronic control systems can be used together for controlling the stability of the automobile in a centralized and unified manner by an electronic control unit, and the driving stability and the safety of dangerous chemical liquid transportation road trains are greatly protected.

According to the requirement of actual freight volume, a plurality of semitrailers 3 and trolleys 4 can be arranged. Because the platform trucks 4 are connected between the two semi-trailers 3, which is equivalent to a bridge for connecting the two semi-trailers 3, the number of the platform trucks 4 is one less than that of the semi-trailers 3. For example, there are two flatbeds 4, and the semitrailer 3 should then comprise one semitrailer 3 located in front of the first flatbed 4, a semitrailer 3 located between the two flatbeds 4, and one semitrailer 3 located behind the second flatbed 4, i.e. in this combination, there should be three semitrailers 3. Similarly, if the platform cars 4 are three, the semitrailer 3 should be four, and so on.

Of course, only one platform truck 4 may be provided, and two semitrailers 3 are provided, and the two semitrailers 3 are respectively provided in front of and behind the platform truck 4. In this way, a road train is formed which is pulled by a tractor 1 and comprises a trailer 2 and two semitrailers 3.

Under the condition that the platform truck 4 needs to be arranged in a road train, the electric circuit mounting plate 27 is also arranged at the rear end of the front semi-trailer 3, so that a pressure air source and electric energy are provided for the rear semi-trailer 3. The rear of the last semitrailer 3 is not connected with other semitrailers 3, so the rear end of the last semitrailer 3 can be provided with no electric circuit mounting plate 27. In practical application, the electric path mounting plates 27 can be arranged at the front end and the rear end of all the semi-trailers 3, in the specific arrangement of the train, the electric path mounting plate 27 of the last semi-trailer 3 is closed through a valve or a switch to prevent leakage, and when a certain semi-trailer 3 is positioned in front of other semi-trailers 3, the electric path mounting plate 27 at the rear end of the semi-trailer 3 is opened, so that the interchangeability of the semi-tank trucks is improved.

As described in the above embodiments, the road train may not be provided with the platform cars 4, and a road train consisting of only one tractor 1, one trailer 2 and one semi-trailer 3 may be used as a way to arrange a smaller amount of cargo to be transported.

With continued reference to fig. 9 and 10, the connecting portion 43 of the dolly 4 includes a connecting frame 431, a connecting pin, and a first leg 432, and one end of the connecting frame 431 is hinged to the front end of the second frame 41 so that the connecting frame 431 can swing up and down around the hinge. The other end of the connecting frame 431 is provided with a first pin hole. The connecting pin can be inserted into the first pin hole. The second pin hole is arranged on the connection matching part at the tail part of the semitrailer 3, and the connection between the semitrailer 3 and the trolley 4 can be realized by inserting the connecting pin into the first pin hole and the second pin hole simultaneously.

The first leg 432 is hinged to the connecting frame 431, and may be hinged to the lower side of the middle position of the connecting frame 431. The first leg 432 swings to the vertical position to support the connecting frame 431 in the horizontal position, that is, the first leg 432 is substantially perpendicular to the connecting frame 431 in the supporting position. Through the arrangement, when the platform truck 4 is connected with the front semi-trailer 3, the connecting frame 431 can be supported in a horizontal state and kept still in place through the first support legs 432, the front semi-trailer 3 backs up under the pushing of the tractor 1, and then the connecting matching part of the front semi-trailer 3 moves to a proper position, and then the platform truck 4 is connected to the front semi-trailer 3 through the connection pin inserted into the first pin hole of the connecting frame 431 and the second pin hole of the connecting matching part.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A road train, comprising:

the rear part of the tractor is provided with an extension frame, and the upper side of the extension frame is provided with a first saddle;

the bearing trailer comprises a tank box, a first frame, wheels, a second saddle and a first traction pin; the tank box is arranged on the upper side of the front part of the first frame; the wheel is mounted on the lower side of the rear part of the first frame; the second saddle is arranged on the upper side of the rear part of the first frame, so that the rear part of the first frame forms a bearing platform; the first traction pin is fixed on the lower side of the tank box close to the front end and can be matched and connected with the first saddle to realize the hanging connection of the trailer and the tractor;

the semitrailer comprises a semitrailer body and a second traction pin; the second traction pin is fixedly connected with the semitrailer main body and can be connected with the second saddle in a matched mode to achieve the fact that the semitrailer is connected to the bearing platform in a hanging mode.

2. The road train of claim 1, further comprising a platform cart; the flatcar comprises a second frame, wheels and a third saddle; the third saddle is arranged on the upper side of the second frame; the wheels are arranged on the lower side of the second frame; the front end of the second frame is provided with a connecting part;

3. The road train of claim 2, wherein the platform vehicle is plural.

4. The road train of claim 2, wherein the connection portion comprises a connection frame and a connection pin;

5. The road train of claim 3, wherein the connecting portion further comprises a first leg hingedly connected to the connecting frame for supporting the connecting frame in a horizontal position when swung to an upright position.

6. A road train as claimed in claim 1, wherein the rear end of the trailer and the front end of the semitrailer are each provided with electrical circuit mounting plates which are electrically and pneumatically connectable to one another.

7. A road train as claimed in claim 1, wherein a ladder is fixedly provided on each of the side portions of the trailer and the semitrailer.

8. A road train as claimed in claim 1, characterised in that the bottom of the trailer and the semitrailer are provided with respective second telescopic legs which, when extended, support the trailer or semitrailer in a horizontal position.

9. A road train according to claim 1, wherein the trailer and the semi-trailer are each connected to the axle of the wheel by an air suspension system.

10. A road train according to claim 2, wherein the platform vehicle is provided with an electronically controlled braking system.