Novel traction frame of full-trailer train

Abstract

The utility model relates to the technical field of full-trailer trains, in particular to a novel traction frame of a full-trailer train, which comprises a bogie, a traction frame body and a traction device, the bolt seat is fixedly installed on the main vehicle, the hook ring can extend to be inserted into the bolt seat through the telescopic cylinder and is fixed through the bolt, the hook ring can also be shortened to the trailer to move towards the main vehicle through the telescopic cylinder, and the traction frame body is far away from the end face of the bogie, namely the front end of the traction frame body can move to abut against the tail end of the main vehicle. The tail end face of the main vehicle girder completely abuts against the front end face of the traction frame body, at the moment, the bolt seat is located in the receding groove, and the main vehicle girder and the trailer traction frame body form a firm whole. Trailer steering is independently completed by a trailer steering mechanism composed of a trailer bogie and a steering wheel. Therefore, the tracking performance, the stability and the operability of the trailer are improved. Therefore, the possibility of high-speed driving qualification is realized. Therefore, the effects of improving the transportation time efficiency, reducing the transportation cost and eliminating potential safety hazards are achieved.

Description

Technical Field

[0001] This application relates to the technical field of full-trailer trains, and in particular to a new type of drawbar for full-trailer trains. Background Art

[0002] A full-trailer train includes a tractor and a trailer, and the tractor and the trailer are connected by a drawbar. In road transportation, due to structural reasons, the front end of the trailer drawbar (the connection part with the tractor) is directly hooked on the tractor through a hook, which has the functions of moving up and down and turning. As a result, when driving, the full-trailer train has poor tracking performance and is prone to the phenomenon of fishtailing. Based on this, in the "Highway Traffic Management Measures" in 1995, it was first stipulated that full trailers are not allowed to enter the highway. Therefore, the existing connection method between the tractor and the trailer of the full-trailer train not only restricts its driving on the highway, reduces the transportation efficiency, but also increases the transportation cost, and also poses a safety hazard to the operation of the full-trailer train. For this reason, there is an urgent need to provide a new type of drawbar for full-trailer trains. Utility Model Content

[0003] In order to improve the tracking performance of the full-trailer train, make the full-trailer train not prone to the phenomenon of fishtailing, thereby improving the transportation efficiency, reducing the transportation cost and safety hazards, this application provides a new type of drawbar for full-trailer trains.

[0004] The new type of drawbar for full-trailer trains provided by this application adopts the following technical solutions:

[0005] A new type of drawbar for full-trailer trains includes a bogie, a drawbar body and a traction device;

[0006] The bogie is connected below the trailer, one end of the drawbar body is hinged to the bogie, and the other end of the drawbar body is connected to the trailer through a traction device;

[0007] The traction device includes a telescopic cylinder, a hook ring and a pin seat. The telescopic cylinder is fixedly arranged inside the drawbar body. A relief groove is provided at one end of the drawbar body away from the bogie. The piston rod of the telescopic cylinder passes through the relief groove and is connected to the hook ring;

[0008] The pin seat is fixedly installed on the tractor. The hook ring can be extended by the telescopic cylinder to be inserted into the pin seat and fixed by a pin. The hook ring can also be shortened by the telescopic cylinder to drive the trailer to move towards the tractor. The end face of the drawbar body away from the bogie can move to abut against the rear end of the tractor. At this time, the pin seat is located in the relief groove.

[0009] By adopting the above technical solution, when the trailer is connected to the tractor through the towing frame of the present application, the telescopic cylinder is started. The hook ring extends through the telescopic cylinder and is inserted into the pin seat and fixed by a pin. Subsequently, the telescopic cylinder shortens, and the trailer moves towards the tractor. The end face of the towing frame body away from the bogie can move to abut against the rear end of the tractor, that is, the rear end face of the tractor beam is completely abutted against the front end face of the towing frame body, realizing the tight connection between the tractor and the towing frame. The connection positions between the tractor and the towing frame limit each other. Compared with the traditional connection method, it is not easy for the tractor and the towing frame body to move up and down and turn, thereby improving the tracking performance of the full trailer train, making it not easy for the full trailer train to have a fishtailing phenomenon, further improving the transportation efficiency, and reducing the transportation cost and potential safety hazards.

[0010] Optionally, the shape of the towing frame body includes a square, a rectangle or a trapezoid.

[0011] Optionally, the towing frame body includes a frame, a first cross beam and a second cross beam. The first cross beam and the second cross beam are fixedly arranged in the frame. Both ends of the telescopic cylinder body are respectively connected to the first cross beam and the second cross beam, and the piston rod of the telescopic cylinder passes through the first cross beam.

[0012] By adopting the above technical solution, it is convenient for the installation of the telescopic cylinder, and the structure is simple.

[0013] Optionally, the frame is formed by connecting I-beams or channel steels, and the first cross beam and the second cross beam are I-beams.

[0014] Optionally, both ends of the first cross beam and the second cross beam are located in the frame and are detachably connected to the frame by bolts. The lengths of the first cross beam and the second cross beam are less than the width between the two inner side walls of the frame.

[0015] By adopting the above technical solution, in the way of being detachably connected to the frame by bolts, the first cross beam and the second cross beam can be prefabricated, transported and assembled on site separately, which is convenient for the installation of the first cross beam, the second cross beam and the telescopic cylinder.

[0016] Optionally, rollers are installed below the bogie, and a steering wheel is installed on the top surface of the bogie. The towing frame body is connected to the bottom of the trailer through the steering wheel.

[0017] By adopting the above technical solution, the steering wheel can bear the combined load, and can simultaneously bear large axial, radial loads and overturning moments, which helps to reduce the friction coefficient and improve the operation efficiency of the full trailer train.

[0018] Optionally, a diagonal brace is fixedly connected inside the bogie, and the top surface of the diagonal brace is fixedly connected to the bottom surface of the steering wheel.

[0019] By adopting the above technical solution, it helps to improve the installation stability of the steering wheel.

[0020] Optionally, one end of the bogie close to the traction frame body is fixedly connected with a pair of mounting plates, and one end of the traction frame body away from the main vehicle is fixedly connected with a connecting plate. The connecting plate is correspondingly inserted into the pair of mounting plates, and a hinge shaft passes through the mounting plates and the connecting plate. One end of the hinge shaft is fixedly connected with a limiting plate, and the other end of the hinge shaft is a threaded section and is threadedly connected by a nut.

[0021] By adopting the above technical solution, it is convenient to realize the hinge connection between the traction frame body and the bogie, and the structure is simple and the installation is convenient.

[0022] In summary, the present application includes at least the following beneficial technical effects:

[0023] There is no need to make too many changes to the overall structure of the existing full-trailer train. The structure is simple and the cost is low. Since the front end of the traction frame, that is, the end of the traction frame body connected to the main vehicle, loses the functions of moving up and down and turning, the safety and stability of the trailer are improved. When reversing, only the steering wheels of the main vehicle are needed, and the operability is improved. Description of the Drawings

[0024] Figure 1 It is a schematic connection structure diagram of the main vehicle, the trailer and the new traction frame of the full-trailer train in the embodiment of the present application.

[0025] Figure 2 It is a schematic overall structure diagram of a new traction frame of a full-trailer train in the embodiment of the present application.

[0026] Figure 3 It is a schematic structure diagram for showing the connection relationship between the bogie and the traction frame body.

[0027] Figure 4 It is a schematic structure diagram for showing the traction frame body in the embodiment of the present application.

[0028] Figure 5 It is a schematic structure diagram for showing the connecting plate in the embodiment of the present application.

[0029] Figure 6 It is a schematic structure diagram for showing the pin seat in the embodiment of the present application.

[0030] Description of the reference numerals: 1, bogie; 11, mounting plate; 2, traction frame body; 21, frame; 22, first cross beam; 23, second cross beam; 24, connecting plate; 25, hinge shaft; 26, limiting plate; 27, nut; 3, telescopic cylinder; 4, hook ring; 5, pin seat; 6, trailer; 7, main vehicle; 8, steering wheel. Detailed Description

[0031] The following is combined with the attachedFigures 1-6 Further detailed description is made to this application.

[0032] An embodiment of this application discloses a new type of towing frame for a full trailer train. Referring to Figures 1-6 , the new type of towing frame for a full trailer train includes a bogie 1, a towing frame body 2 and a towing device. The bogie 1 is connected below the trailer 6. One end of the towing frame body 2 is hinged to the bogie 1, and the other end of the towing frame body 2 is connected to the trailer 6 through the towing device. The towing device includes a telescopic cylinder 3, a hook ring 4 and a pin seat 5. The telescopic cylinder 3 can be a hydraulic cylinder or a pneumatic cylinder. The telescopic cylinder 3 is fixedly arranged in the towing frame body 2. A relief groove is formed at one end of the towing frame body 2 away from the bogie 1. The piston rod of the telescopic cylinder 3 passes through the relief groove and is connected to the hook ring 4.

[0033] The pin seat 5 is fixedly installed on the tractor 7. The hook ring 4 can be extended by the telescopic cylinder 3 to be inserted into the pin seat 5 and fixed by a pin. The hook ring 4 can also be shortened by the telescopic cylinder 3 to drive the tractor 7 to move in the direction close to the trailer 6. The tail end of the tractor 7 can move to abut against the end face of the towing frame body 2 away from the bogie 1. At this time, the pin seat 5 is located in the relief groove.

[0034] When connecting the trailer 6 and the tractor 7 through the towing frame of this application, start the telescopic cylinder 3. The hook ring 4 is extended by the telescopic cylinder 3 to be inserted into the pin seat 5 and fixed by a pin. Any pin that can be fixed can be used. Subsequently, the telescopic cylinder 3 is shortened to drive the trailer 6 to move towards the tractor 7. The end face of the towing frame body 2 away from the bogie 1 can move to abut against the tail end of the tractor 7, realizing the tight connection between the tractor 7 and the towing frame. The connection positions between the tractor 7 and the towing frame are mutually limited. Compared with the traditional connection method, it is not easy for the tractor 7 and the towing frame body 2 to move up and down and turn, thereby improving the tracking performance of the full trailer train, making it not easy for the full trailer train to have a fishtailing phenomenon, and further improving the transportation efficiency, reducing the transportation cost and potential safety hazards.

[0035] Referring to Figures 2-4 , the towing frame body 2 includes a frame 21, a first cross beam 22 and a second cross beam 23. The first cross beam 22 and the second cross beam 23 are fixedly arranged in the frame 21. The two ends of the cylinder body of the telescopic cylinder 3 are respectively connected to the first cross beam 22 and the second cross beam 23. The piston rod of the telescopic cylinder 3 passes through the first cross beam 22. It is convenient for the installation of the telescopic cylinder 3 and the structure is simple.

[0036] Referring to Figures 2-4, the frame body 21 is formed by welding I-beams or channel steels, and the first cross beam 22 and the second cross beam 23 are I-beams. The shape of the traction frame body 2 includes a square, a rectangle or a trapezoid. In the embodiment of the present application, the shape of the traction frame body 2 is a rectangle, and the frame body 21 is formed by welding channel steels. The two ends of the first cross beam 22 and the second cross beam 23 are located inside the frame body 21 and are detachably connected to the frame body 21 by bolts. The lengths of the first cross beam 22 and the second cross beam 23 are less than the width between the two inner side walls of the frame body 21. By the way of detachably connecting to the frame body 21 by bolts, the first cross beam 22 and the second cross beam 23 can be prefabricated, transported and assembled on site separately, which is convenient for the installation of the first cross beam 22, the second cross beam 23 and the telescopic cylinder 3.

[0037] Refer to Figures 2-4 , rollers are installed below the bogie 1, and a steering wheel 8 is installed on the top surface of the bogie 1. The traction frame body 2 is connected to the bottom of the trailer 6 through the steering wheel 8. The steering wheel 8 in the embodiment of the present application adopts a slewing bearing. The steering wheel 8 can bear the combined load and can bear large axial, radial loads and overturning moments at the same time, which helps to reduce the friction coefficient and improve the operation efficiency of the full trailer train. A diagonal brace is fixedly connected inside the bogie 1, and the top surface of the diagonal brace is fixedly connected to the bottom surface of the steering wheel 8, which helps to improve the installation stability of the steering wheel 8.

[0038] Refer to Figures 2-5 , a pair of mounting plates 11 are fixedly connected to one end of the bogie 1 close to the traction frame body 2, and a connecting plate 24 is fixedly connected to one end of the traction frame body 2 away from the tractor 7. The connecting plate 24 is correspondingly inserted into the pair of mounting plates 11. An articulated shaft 25 passes through the mounting plates 11 and the connecting plate 24. One end of the articulated shaft 25 is fixedly connected with a limiting plate 26, and the other end of the articulated shaft 25 is a threaded section and is threadedly connected by a nut 27, which is convenient to realize the articulation of the traction frame body 2 and the bogie 1, and has a simple structure and is convenient for installation.

[0039] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A new type of traction frame for a full-trailer train, characterized in that: It comprises a bogie (1), a traction frame body (2) and a traction device; The bogie (1) is connected to the bottom of the trailer (6), one end of the traction frame body (2) is hinged to the bogie (1), and the other end of the traction frame body (2) is connected to the trailer (6) via a traction device; The traction device comprises a telescopic cylinder (3), a hook ring (4) and a latch seat (5); the telescopic cylinder (3) is fixedly arranged in a traction frame body (2); a clearance groove is provided at one end of the traction frame body (2) away from the bogie (1); a piston rod of the telescopic cylinder (3) passes through the clearance groove and is connected to the hook ring (4); The latch seat (5) is fixedly mounted on the main vehicle (7); the hook ring (4) can be extended by a telescopic cylinder (3) to be inserted into the latch seat (5) and fixed by a latch; the hook ring (4) can also be shortened by a telescopic cylinder (3) to drive the trailer (6) to move toward the main vehicle (7); the end surface of the traction frame body (2) away from the bogie (1) can be moved to abut against the rear end of the main vehicle (7), and at this time, the latch seat (5) is located in the clearance groove.

2. The novel traction frame of a full-trailer train according to claim 1 is characterized in that: The shape of the traction frame body (2) includes square, rectangle or trapezoid.

3. A new type of traction frame for a full-trailer train according to claim 1 or 2, characterized in that: The traction frame body (2) comprises a frame (21), a first crossbeam (22) and a second crossbeam (23); the first crossbeam (22) and the second crossbeam (23) are fixedly arranged in the frame (21); two ends of a cylinder body of the telescopic cylinder (3) are respectively connected to the first crossbeam (22) and the second crossbeam (23); a piston rod of the telescopic cylinder (3) passes through the first crossbeam (22).

4. The novel traction frame of a full-trailer train according to claim 3 is characterized in that: The frame (21) is formed by connecting I-beams or channel steels, and the first crossbeam (22) and the second crossbeam (23) are I-beams.

5. The novel traction frame of a full-trailer train according to claim 4 is characterized in that: Both ends of the first crossbeam (22) and the second crossbeam (23) are located inside the frame (21) and are detachably connected to the frame (21) via bolts; the length of the first crossbeam (22) and the second crossbeam (23) is smaller than the width between two inner side walls of the frame (21).

6. The novel traction frame of a full-trailer train according to claim 1 is characterized in that: Rollers are installed below the bogie (1), a steering wheel (8) is installed on the top surface of the bogie (1), and the traction frame body (2) is connected to the bottom of the trailer (6) via the steering wheel (8).

7. The novel traction frame of a full-trailer train according to claim 6 is characterized in that: An oblique brace is fixedly connected inside the bogie (1), and the top surface of the oblique brace is fixedly connected to the bottom surface of the steering wheel (8).

8. The novel traction frame of a full-trailer train according to claim 1 is characterized in that: One end of the bogie (1) close to the traction frame body (2) is fixedly connected to a mounting plate (11) arranged in pairs, and one end of the traction frame body (2) away from the main vehicle (7) is fixedly connected to a connecting plate (24), and the connecting plate (24) is correspondingly inserted into the mounting plates (11) arranged in pairs. An articulated shaft (25) passes through the mounting plates (11) and the connecting plates (24), one end of the articulated shaft (25) is fixedly connected to a limiting plate (26), and the other end of the articulated shaft (25) is a threaded section and is threadedly connected via a nut (27).

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