Combined semi-trailer train

Abstract

The utility model relates to the technical field of ultra-large construction machinery transition equipment, in particular to a combined semi-trailer train which comprises a middle main trailer, a front bearing trailer and a tail bearing trailer. The left end of the middle main trailer is detachably connected with a front bearing trailer, and the right end of the middle main trailer is detachably connected with a tail bearing trailer; the middle main trailer comprises a main frame, a traction head is arranged at the left end of the main frame, a bearing table is arranged at the right end of the main frame, a first traction pin is arranged at the left end of the lower surface of the traction head, and a hanging frame is arranged at the right end of the lower surface of the bearing table. A combined semi-trailer train can flexibly change train combination according to requirements so as to adapt to different transportation requirements, can combine various types of trailers and increase the length of the trailers and the number of axles so as to reduce the axle load capacity, is particularly suitable for transporting ultra-large engineering mechanical equipment, improves the transportation efficiency, and is small in turning radius, good in controllability and high in practicability. The driver operation is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of transfer equipment for super-large construction machinery, and specifically to a combined semi-trailer train. Background Art

[0002] Semi-trailers are required for the transfer and transportation of oversized construction machinery between mining and large-scale construction sites. Currently, the length and width of existing semi-trailers are fixed and cannot be adjusted later. This means that for overlong, overwide, and overweight cargo, specialized transport vehicles are required. These specialized transport vehicles are expensive to manufacture, have long production cycles, and lack versatility. This ultimately leads to low utilization rates and poor returns on investment for these specialized semi-trailers, increasing operating costs for users.

[0003] At the same time, the existing vehicles used for transporting super-large engineering machinery and equipment have a relatively large turning radius and poor maneuverability. Utility Model Content

[0004] The present application provides a combined semi-trailer train, which can flexibly change the vehicle combination according to demand to adapt to different transportation needs. The train can be combined with various types of trailers, increase the trailer length and the number of axles, thereby reducing the axle load. It is particularly suitable for transporting super-large engineering machinery and equipment, improves transportation efficiency, has a small turning radius, good maneuverability, and is convenient for the driver to operate, which can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the present application provides the following technical solutions: a combined semi-trailer train, comprising a middle main trailer, a front load-bearing trailer and a rear load-bearing trailer.

[0006] The left end of the middle main trailer is detachably connected to the front load-bearing trailer, and the right end of the middle main trailer is detachably connected to the rear load-bearing trailer.

[0007] The middle main trailer includes a main frame, a traction head is provided at the left end of the main frame, a load-bearing platform is provided at the right end of the main frame, a traction pin is provided at the left end of the lower surface of the traction head, and a hanging bracket is provided at the right end of the lower surface of the load-bearing platform.

[0008] The front load-bearing trailer includes an extension frame 1, a load-bearing wheel 1 is provided at the right end of the lower surface of the extension frame 1, a traction pin is provided at the left end of the lower surface of the extension frame 1, and a saddle-type traction seat is provided at the left end of the upper surface of the extension frame 1, and the saddle-type traction seat is correspondingly arranged to the traction pin 1.

[0009] The tail-carrying trailer includes an extension frame 2, a connecting plate is installed on the left side of the extension frame 2, a self-locking hook is installed on the lower surface of the connecting plate, and the self-locking hook is correspondingly arranged to be connected with the bracket.

[0010] Preferably, a plurality of sets of wheels are symmetrically mounted on the front and rear ends of the lower surface of the load-bearing platform.

[0011] Preferably, the right end of the lower surface of the extension frame is rotatably connected to a limiting shaft, and the limiting shaft is connected to an axle through a swing arm 1 arranged on its outer side surface, and load-bearing wheels 1 are installed at both front and rear ends of the outer side surface of the axle 1, and a shock absorber is installed between the upper surface of the swing arm 1 and the lower surface of the extension frame 1.

[0012] Preferably, a positioning plate is installed on the upper end of the outer side surface of the connecting plate, and a roller is installed on the end of the outer side surface of the positioning plate.

[0013] Preferably, the self-locking hook includes a top hook fixed on the outer side of the connecting plate, the top hook is rotatably connected to the bottom hook through a connecting shaft set on its outer side, the bottom hook is connected to the connecting plate through a thrust spring, and the bottom hook and the top hook are fixed together through a positioning rod.

[0014] Preferably, a hydraulic support leg is provided at the left end of the lower surface of the second extension frame.

[0015] Preferably, the lower surface of the second extension frame is rotatably connected to the second cantilever, an airbag for shock absorption is provided between the upper surface of the second cantilever and the lower surface of the second extension frame, and a second load-bearing wheel is installed at the end of the second cantilever.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This modular semi-trailer train can flexibly change the vehicle combination according to demand to adapt to different transportation needs. The train can be combined with various types of trailers, increasing the trailer length and the number of axles, thereby reducing the axle load. It is particularly suitable for transporting super-large construction machinery and equipment, improving transportation efficiency, with a small turning radius, good maneuverability, and convenient operation for the driver;

[0018] 2. This application solves the problems of transportation efficiency and flexibility. Compared with ordinary semi-trailer trailers, it can transport more types of goods at the same time, adapt to different transportation needs, has a wide range of applications, and reduces transportation costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the combined semi-trailer train in the hooked state;

[0020] Figure 2 This is the main view of the front-loaded trailer;

[0021] Figure 3 This is the main view of the rear-carrying trailer;

[0022] Figure 4 Schematic diagram of the structure of the self-locking hook;

[0023] Figure 5 This is the main view of the middle trailer.

[0024] In the figure: 1 middle main trailer, 11 towing pin 1, 12 towing head, 13 main frame, 14 load-bearing platform, 15 rack, 2 front load-bearing trailer, 21 towing pin, 22 saddle-type drawbar, 23 extension frame 1, 24 shock absorber, 25 axle 1, 26 swing arm 1, 27 limit shaft, 3 rear load-bearing trailer, 31 self-locking hook, 311 top hook, 312 connecting shaft, 313 thrust spring, 314 positioning rod, 315 bottom hook, 32 positioning plate, 33 connecting plate, 34 hydraulic support leg, 35 extension frame 2, 36 cantilever 2, 37 airbag shock absorber. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] In the description of this application, if the direction description is involved, for example, the direction or position relationship indicated by "up", "down", "front", "back", "left", "right", etc. is based on the attached Figure 1 The orientations or positional relationships shown are for the purpose of facilitating the description of this application and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting this application. When a feature is referred to as being "disposed," "fixed," or "connected" to another feature, it may be directly disposed, fixed, or connected to the other feature or indirectly disposed, fixed, or connected to the other feature.

[0027] See also Figure 1-5 The present application provides the following technical solution: a combined semi-trailer train, comprising a middle main trailer 1, a front load-bearing trailer 2 and a rear load-bearing trailer 3.

[0028] Specifically, when performing large-scale transportation tasks, it is only necessary to install the front load-bearing trailer 2 and the rear load-bearing trailer 3 at the two ends of the middle main trailer 1 respectively. You can choose to mount the front load-bearing trailer 2 or the rear load-bearing trailer 3 according to different transportation tasks.

[0029] The left end of the intermediate main trailer 1 is detachably connected to the front load-bearing trailer 2 , and the right end of the intermediate main trailer 1 is detachably connected to the rear load-bearing trailer 3 .

[0030] The intermediate main trailer 1 includes a main frame 13, a traction head 12 is provided at the left end of the main frame 13, a load-bearing platform 14 is provided at the right end of the main frame 13, a traction pin 11 is provided at the left end of the lower surface of the traction head 12, and a hanging bracket 15 is provided at the right end of the lower surface of the load-bearing platform 14.

[0031] Specifically, the traction head 12 is rotatably mounted on the left end of the upper surface of the main frame 13 through a pin shaft. After the traction head 12 is rotated to a specified angle, its position can be fixed by a locking device. The locking device includes a locking bolt, which can fix the traction head 12 and the main frame 13 together.

[0032] More specifically, the traction pin 11 is used to connect with the saddle-type traction seat 22. The upper surface of the saddle-type traction seat 22 is provided with a mounting hole 1 corresponding to the traction pin 11. After the traction pin 11 is inserted into the mounting hole 1, it is fixed to the saddle-type traction seat 22 by a U-shaped pin to prevent it from falling off during use.

[0033] The front load-bearing trailer 2 includes an extension frame 23, a load-bearing wheel 1 is provided at the right end of the lower surface of the extension frame 23, a traction pin 21 is provided at the left end of the lower surface of the extension frame 23, and a saddle-type traction seat 22 is provided at the left end of the upper surface of the extension frame 23. The saddle-type traction seat 22 is correspondingly arranged to be engaged with the traction pin 11.

[0034] Specifically, the traction pin 21 is used to connect with the connecting seat of the front of the vehicle.

[0035] The tail-carrying trailer 3 includes an extension frame 2 35 , a connecting plate 33 is installed on the left side of the extension frame 2 35 , a self-locking hook 31 is installed on the lower surface of the connecting plate 33 , and the self-locking hook 31 is correspondingly arranged to be engaged with the bracket 15 .

[0036] Specifically, a horizontal traction column is installed on the hanging bracket 15, and the self-locking hook 31 is locked on the traction column.

[0037] Furthermore, a plurality of wheels are symmetrically mounted on the front and rear ends of the lower surface of the load-bearing platform 14 .

[0038] Specifically, multiple sets of wheels can effectively improve the load-bearing capacity of the load-bearing platform 14 .

[0039] Furthermore, the right end of the lower surface of the extension frame 23 is rotatably connected to a limit shaft 27, and the limit shaft 27 is connected to an axle 25 through a swing arm 26 arranged on its outer side surface. Load-bearing wheels 1 are installed at both the front and rear ends of the outer side surface of the axle 25, and a shock absorber 24 is installed between the upper surface of the swing arm 26 and the lower surface of the extension frame 23.

[0040] Specifically, the existence of the shock absorber 24 allows the rotary arm 26 to rotate around the limiting axis 27, which can provide a good buffering effect for the extension frame 23.

[0041] Furthermore, a positioning plate 32 is installed on the upper end of the outer side surface of the connecting plate 33 , and a roller is installed on the end of the outer side surface of the positioning plate 32 .

[0042] Specifically, the roller contacts the rear end of the load-bearing platform 14 . When the vehicle brakes, the roller on the positioning plate 32 is pressed tightly against the tail of the load-bearing platform 14 , which can provide good protection for the self-locking hook 31 .

[0043] Furthermore, the self-locking hook 31 includes a top hook 311 fixed on the outer side of the connecting plate 33. The top hook 311 is rotatably connected to the bottom hook 315 through a connecting shaft 312 set on its outer side. The bottom hook 315 is connected to the connecting plate 33 through a thrust spring 313. The bottom hook 315 and the top hook 311 are fixed together through a positioning rod 314.

[0044] Specifically, when hanging, the top hook 311 and the bottom hook 315 are engaged with the traction column of the hanging rack 15 .

[0045] Furthermore, a hydraulic support leg 34 is provided at the left end of the lower surface of the second extension frame 35 .

[0046] Specifically, when the extension frame 2 35 is mounted, the hydraulic support leg 34 is extended to lift the end of the extension frame 2 35 , so that the self-locking hook 31 and the hanger 15 are at the same height, facilitating the connection between the self-locking hook 31 and the hanger 15 .

[0047] Furthermore, the lower surface of the second extension frame 35 is rotatably connected to the second cantilever 36 , an airbag shock absorber 37 is provided between the upper surface of the second cantilever 36 and the lower surface of the second extension frame 35 , and a second load-bearing wheel is installed at the end of the second cantilever 36 .

[0048] Specifically, the number of the airbag shock absorber 37 is not less than one.

[0049] During use: Before the transport mission begins, the operator selects a suitable trailer combination based on the cargo type and transport requirements, including the middle main trailer 1, the front load trailer 2 and the rear load trailer 3.

[0050] Combined connection: The operator parks the middle main trailer 1 on flat ground, then moves the front load-bearing trailer 2 close to the middle main trailer 1, ensuring that the traction pin 11 is aligned with the inner hole of the saddle-type traction seat 22 of the front trailer 2, and then inserts the traction pin 11 and locks it to complete the connection between the middle main trailer 1 and the front load-bearing trailer 2. Then, the operator moves the rear load-bearing trailer 3 close to the rear end of the middle main trailer 1, ensuring that the self-locking hook 31 is aligned with the bracket 15, hooks and locks the connecting device to complete the connection between the middle main trailer 1 and the rear load-bearing trailer 3.

[0051] Finally, the power tractor reverses so that the traction saddle on the front of the vehicle is hooked and locked with the traction pin 21 of the front load-bearing trailer 2, and the semi-trailer train is completed.

[0052] After the semi-trailer train is assembled, the staff can load the cargo and then transport and unload it.

[0053] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A combined semi-trailer train, characterized by: It includes a middle main trailer (1), a front load-bearing trailer (2) and a rear load-bearing trailer (3); The left end of the intermediate main trailer (1) is detachably connected to the front load-bearing trailer (2), and the right end of the intermediate main trailer (1) is detachably connected to the rear load-bearing trailer (3); The middle main trailer (1) includes a main frame (13), a traction head (12) is provided at the left end of the main frame (13), a load-bearing platform (14) is provided at the right end of the main frame (13), a traction pin (11) is provided at the left end of the lower surface of the traction head (12), and a hanging bracket (15) is provided at the right end of the lower surface of the load-bearing platform (14); The front load-bearing trailer (2) includes an extension frame (23), a load-bearing wheel (1) is provided at the right end of the lower surface of the extension frame (23), a traction pin (21) is provided at the left end of the lower surface of the extension frame (23), and a saddle-type traction seat (22) is provided at the left end of the upper surface of the extension frame (23), and the saddle-type traction seat (22) is correspondingly arranged to be engaged with the traction pin (11); The tail-carrying trailer (3) includes an extension frame 2 (35), a connecting plate (33) is installed on the left side of the extension frame 2 (35), a self-locking hook (31) is installed on the lower surface of the connecting plate (33), and the self-locking hook (31) is correspondingly arranged to be connected with the bracket (15).

2. The combined semi-trailer train according to claim 1, characterized in that: A plurality of sets of wheels are symmetrically mounted on the front and rear ends of the lower surface of the load-bearing platform (14).

3. The combined semi-trailer train according to claim 1, characterized in that: The right end of the lower surface of the extension frame (23) is rotatably connected to a limit shaft (27), and the limit shaft (27) is connected to an axle (25) through a swing arm (26) provided on the outer side thereof. Load-bearing wheels (25) are installed at both the front and rear ends of the outer side of the axle (25), and a shock absorber (24) is installed between the upper surface of the swing arm (26) and the lower surface of the extension frame (23).

4. The combined semi-trailer train according to claim 1, characterized in that: A positioning plate (32) is installed on the upper end of the outer side surface of the connecting plate (33), and a roller is installed on the end of the outer side surface of the positioning plate (32).

5. The combined semi-trailer train according to claim 1, characterized in that: The self-locking hook (31) includes a top hook (311) fixed to the outer side of the connecting plate (33). The top hook (311) is rotatably connected to the bottom hook (315) via a connecting shaft (312) provided on the outer side of the top hook (311). The bottom hook (315) is connected to the connecting plate (33) via a thrust spring (313). The bottom hook (315) and the top hook (311) are fixed together via a positioning rod (314).

6. The combined semi-trailer train according to claim 1, characterized in that: A hydraulic support leg (34) is provided at the left end of the lower surface of the second extension frame (35).

7. The combined semi-trailer train according to claim 1, characterized in that: The lower surface of the second extension frame (35) is rotatably connected to the second cantilever (36), an air bag shock absorber (37) is provided between the upper surface of the second cantilever (36) and the lower surface of the second extension frame (35), and a load-bearing wheel (2) is installed at the end of the second cantilever (36).

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