Semitrailer box traction device

Abstract

The utility model relates to the technical field of traction devices, in particular to a semitrailer box traction device which comprises a platform frame, and a first installation base and a second installation base are fixedly installed at the two ends of one side edge of the platform frame respectively. A first traction cross rod is connected between the first mounting base and the second mounting base, the end, away from the platform frame, of the first mounting base is rotationally connected with a second traction cross rod, and the end, away from the platform frame, of the second mounting base is rotationally connected with a third traction cross rod; the second traction cross rod and one end, far away from the first traction cross rod, of the second traction cross rod are rotationally connected with a third mounting seat; a mounting hole is formed in the third mounting seat, a mounting column is slidably connected in the mounting hole, and a connecting ring is integrally formed at the end, away from the first traction cross rod, of the mounting column; and a locking assembly is arranged on the third mounting seat. During installation, the position of the connecting ring can be adjusted, butt-joint installation is facilitated, the connecting ring can be locked after butt-joint installation, and use safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of traction devices, in particular to a traction device for a semitrailer box. Background Art

[0002] A semitrailer is a trailer with an axle placed behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and equipped with a coupling device that can transmit horizontal and vertical forces to the tractor. Semitrailers are generally three-axle semitrailers, and there are many types of semitrailers, such as 11-meter barn semitrailers, 13-meter barn semitrailers, and low-bed semitrailers. It is a heavy-duty transportation vehicle connected to the semitrailer head through a traction pin. The semitrailer box traction device is a device used to connect the semitrailer box. In the prior art, the traction device is fixedly connected to the end of the front car body. During docking, since its position is always fixed, it is inconvenient to adjust and install, which greatly increases the difficulty of installation. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a semi-trailer box towing device, which can adjust the position of a connecting ring during installation to facilitate docking installation, and can lock the connecting ring after docking installation to ensure safety in use.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned objectives, an embodiment of the present application provides a semi-trailer box traction device, including a platform frame, on which a first mounting seat and a second mounting seat are respectively fixedly installed at two ends of one side of the platform frame; a first traction cross bar is connected between the first mounting seat and the second mounting seat, an end of the first mounting seat away from the platform frame is rotatably connected to the second traction cross bar, an end of the second mounting seat away from the platform frame is rotatably connected to the third traction cross bar, and an end of the second traction cross bar and the second traction cross bar away from the first traction cross bar is rotatably connected to the third mounting seat; a mounting hole is provided on the third mounting seat, the length direction of the mounting hole is perpendicular to the first traction cross bar, a mounting column is slidably connected in the mounting hole, and a connecting ring is integrally formed at the end of the mounting column away from the first traction cross bar; a locking component for locking the mounting column is provided on the third mounting seat.

[0007] Preferably, a linear drive assembly for controlling the mounting column to slide along the length direction of the mounting hole is provided on one end of the third mounting seat close to the first traction cross bar.

[0008] Preferably, the linear drive assembly includes a first electric push rod fixed to the end of the third mounting seat, the piston end of the first electric push rod is fixedly connected to a guide column, the guide column is slidably connected in the mounting hole, and is located at the end of the mounting column away from the connecting ring; the guide column and the mounting column are hinged at one end close to each other, and the first electric push rod controls the mounting column to pass through or enter the mounting hole; when the mounting column passes through the mounting hole, it swings in the vertical direction; when the mounting column enters the mounting hole, the locking assembly locks the mounting column.

[0009] Preferably, a vertical first locking hole is opened on the upper side of the third mounting seat, and the first locking hole passes through the mounting hole; a second locking hole is opened on the mounting column in a vertical direction; the locking assembly includes a second electric push rod fixed to the upper side of the third mounting seat, and a locking column is fixedly installed on the piston end of the second electric push rod, and the locking column is located in the first locking hole and can pass through the first locking hole into the mounting hole, and be plugged and fixed with the second locking hole.

[0010] Preferably, the locking components are provided in at least two groups at intervals.

[0011] Preferably, the cross-sections of the mounting column and the mounting hole are rectangular.

[0012] Preferably, a secondary pull rod is installed on a side of the first mounting seat and the second mounting seat away from the platform frame.

[0013] (III) Beneficial effects

[0014] The utility model provides a semi-trailer box traction device, which forms a stable triangular structure by means of the first traction cross bar, the second traction cross bar and the third traction cross bar on the first mounting seat, the second mounting seat and the third mounting seat. The linear drive assembly arranged on the third mounting seat can control the installation column to move along a straight line, thereby driving the connecting ring to move. When the installation column moves to the outside of the mounting hole, it can swing to a certain angle, thereby adapting to various working conditions for installation. After the connecting ring is sleeved, the installation column is adjusted to enter the mounting hole and locked by the locking assembly. This method can facilitate the installation of the traction device and, at the same time, can lock the traction device after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a semi-trailer box traction device of the utility model;

[0016] Figure 2 The utility model is a partial structural schematic diagram of a semi-trailer box traction device.

[0017] Markings in the accompanying drawings:

[0018] 100, platform frame; 110, first mounting seat; 120, second mounting seat; 130, first traction cross bar; 140, second traction cross bar; 150, third traction cross bar; 200, third mounting seat; 210, mounting hole; 220, mounting column; 221, second locking hole; 230, first locking hole; 240, connecting ring; 300, linear drive assembly; 310, first electric push rod; 320, guide column; 400, locking assembly; 410, second electric push rod; 420, locking column; 500, auxiliary pull rod; DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example

[0021] The utility model provides a semi-trailer box traction device, see Figure 1-Figure 2 , including a platform frame 100, at both ends of one side of the platform frame 100, a first mounting seat 110 and a second mounting seat 120 are fixedly installed respectively; a first traction cross bar 130 is connected between the first mounting seat 110 and the second mounting seat 120, an end of the first mounting seat 110 away from the platform frame 100 is rotatably connected to the second traction cross bar 140, an end of the second mounting seat 120 away from the platform frame 100 is rotatably connected to the third traction cross bar 150, and the second traction cross bar 140 and the end of the second traction cross bar 140 away from the first traction cross bar 130 are rotatably connected to the third mounting seat 200; so that the first traction cross bar 130, the second traction cross bar 140 and the third traction cross bar 150 form a triangular shape.

[0022] The third mounting seat 200 is provided with a mounting hole 210, wherein the length direction of the mounting hole 210 is horizontally arranged and perpendicular to the length direction of the first traction cross bar 130. A mounting post 220 is slidably connected in the mounting hole 210, and a connecting ring 240 is integrally formed at one end of the mounting post 220 away from the first traction cross bar 130; a linear drive assembly 300 is arranged on the end of the third mounting seat 200 close to the first traction cross bar 130. The linear drive assembly 300 controls the movement of the mounting post 220. A locking assembly 400 for locking the mounting post 220 is arranged on the third mounting seat 200.

[0023] When in use, during installation, the installation column 220 is extended by the linear drive assembly 300, so that the connecting ring 240 is sleeved on the traction structure of another carriage. After the mounting column 220 is retracted and the connecting ring 240 is tightened, the mounting column 220 is locked by the locking assembly 400.

[0024] A linear drive assembly 300 for controlling the mounting column 220 to slide along the length direction of the mounting hole 210 is disposed on one end of the third mounting seat 200 close to the first traction cross bar 130 .

[0025] The linear drive assembly 300 includes a first electric push rod 310 fixed to the end of the third mounting seat 200, and the piston end of the first electric push rod 310 is fixedly connected to a guide column 320. The guide column 320 is slidably connected in the mounting hole 210 and is located at one end of the mounting column 220 away from the connecting ring 240.

[0026] The guide column 320 and the mounting column 220 are hinged at one end close to each other, and the first electric push rod 310 controls the mounting column 220 to pass out of or enter the mounting hole 210; when the mounting column 220 passes out of the mounting hole 210, it can swing in the vertical direction, and during the swinging process, it is convenient to connect and fix. When the mounting column 220 enters the mounting hole 210, the locking assembly 400 locks the mounting column 220. After locking, the mounting column 220 can be controlled to remain fixed. During use, the first electric push rod 310 is prevented from being subjected to a large force. Furthermore, the cross-sections of the mounting column 220 and the mounting hole 210 are rectangular. Then, when the traction is completed, the stability of the mounting column 220 can be ensured, and the shear force on the locking assembly 400 can be reduced.

[0027] A vertical first locking hole 230 is formed on the upper side of the third mounting seat 200, and the first locking hole 230 passes through the mounting hole 210. A second locking hole 221 is formed on the mounting column 220 along the vertical direction.

[0028] The locking assembly 400 includes a second electric push rod 410 fixed to the upper side of the third mounting seat 200, and a locking column 420 is fixedly mounted on the piston end of the second electric push rod 410. The locking column 420 is located in the first locking hole 230 and can pass through the first locking hole 230 to enter the mounting hole 210 and be plugged and fixed with the second locking hole 221. When the mounting column 220 retracts and enters the mounting hole 210, the second electric push rod 410 controls the locking rod to extend until it is inserted into the second locking hole 221, thereby locking and supporting the mounting column 220.

[0029] Preferably, at least two groups of locking assemblies 400 are provided at intervals.

[0030] The first mounting seat 110 and the second mounting seat 120 are both installed with a secondary tie rod 500 on one side away from the platform frame 100. The secondary tie rod 500 is connected with another semi-trailer compartment.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the absence of conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0033] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A semi-trailer box traction device, characterized in that: It comprises a platform frame (100), and a first mounting seat (110) and a second mounting seat (120) are respectively fixedly mounted on two ends of one side of the platform frame (100); A first traction cross bar (130) is connected between the first mounting seat (110) and the second mounting seat (120); an end of the first mounting seat (110) away from the platform frame (100) is rotatably connected to a second traction cross bar (140); an end of the second mounting seat (120) away from the platform frame (100) is rotatably connected to a third traction cross bar (150); and an end of the second traction cross bar (140) and the second traction cross bar (140) away from the first traction cross bar (130) are rotatably connected to a third mounting seat (200); The third mounting seat (200) is provided with a mounting hole (210), the length direction of the mounting hole (210) is perpendicular to the first traction cross bar (130), a mounting column (220) is slidably connected in the mounting hole (210), and a connecting ring (240) is integrally formed at one end of the mounting column (220) away from the first traction cross bar (130); The third mounting seat (200) is provided with a locking assembly (400) for locking the mounting column (220).

2. A semi-trailer box traction device according to claim 1, characterized in that: A linear drive assembly (300) for controlling the mounting column (220) to slide along the length direction of the mounting hole (210) is provided on one end of the third mounting seat (200) close to the first traction cross bar (130).

3. A semi-trailer box traction device according to claim 2, characterized in that: The linear drive assembly (300) comprises a first electric push rod (310) fixed to the end of the third mounting seat (200), a piston end of the first electric push rod (310) being fixedly connected to a guide column (320), the guide column (320) being slidably connected in the mounting hole (210) and being located at a position on the mounting column (220) away from the connecting ring (240). one end of The guide column (320) and the mounting column (220) are hinged at one end close to each other, and the first electric push rod (310) controls the mounting column (220) to pass out of or enter the mounting hole (210); when the mounting column (220) passes out of the mounting hole (210), it swings in a vertical direction; when the mounting column (220) enters the mounting hole (210), the locking assembly (400) locks the mounting column (220).

4. A semi-trailer box traction device according to claim 1, characterized in that: A vertical first locking hole (230) is formed on the upper side of the third mounting seat (200), and the first locking hole (230) passes through the mounting hole (210); a second locking hole (221) is formed on the mounting column (220) along the vertical direction; The locking assembly (400) comprises a second electric push rod (410) fixed to the upper side of the third mounting seat (200); a locking column (420) is fixedly mounted on the piston end of the second electric push rod (410); the locking column (420) is located in the first locking hole (230) and is capable of passing through the first locking hole (230) into the mounting hole (210) and being plugged and fixed with the second locking hole (221).

5. A semi-trailer box traction device according to claim 1, characterized in that: The locking components (400) are arranged in at least two groups at intervals.

6. A semi-trailer box traction device according to claim 1, characterized in that: The cross-sections of the mounting column (220) and the mounting hole (210) are rectangular.

7. A semi-trailer box traction device according to claim 1, characterized in that: A secondary pull rod (500) is installed on a side of the first mounting seat (110) and the second mounting seat (120) away from the platform frame (100).

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