Semitrailer traction assembly

Abstract

The utility model discloses a semitrailer traction assembly which comprises a traction plate, two supporting plate cross beams and two supporting plate longitudinal beams are fixed on the traction plate, the two supporting plate longitudinal beams are located between the two supporting plate cross beams, and the supporting plate cross beams are fixedly connected with the supporting plate longitudinal beams. A traction pin seat is fixed to the position, located in the center of a rectangular area defined by the two supporting plate cross beams and the two supporting plate longitudinal beams, of the traction plate, a traction pin is fixedly installed at the lower end of the traction pin seat, notches are formed in the top ends of the two supporting plate cross beams, the two notches are oppositely arranged, and a connecting line of the two notches is located over the traction pin. By forming the notch in the top end of the supporting plate cross beam, the hat brim steel can penetrate through the traction assembly from the notch and is connected with the cross beams on the two sides of the traction assembly, the hat brim steel does not need to be disconnected at the traction assembly, and compared with the mode that the end of the hat brim steel is connected with the side wall of the supporting plate cross beam in a welded mode, the connection strength of the connection mode is higher; and the overall strength of the frame can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, in particular to a traction assembly of a semi-trailer. Background Art

[0002] The semi-trailer has no traction driving capability and needs to be towed and driven by a tractor. A traction mechanism is required to connect the tractor and the semi-trailer. The traction mechanism on the tractor is the traction saddle, and the traction mechanism on the semi-trailer is the traction assembly. The traction assembly is fixed on the frame of the tractor, and the tractor and the semi-trailer are connected by the cooperation of the traction pin of the traction assembly and the traction saddle.

[0003] The frame of the tractor includes two beams on both sides, multiple cross beams fixed between the two beams, and long strips of brim steel fixed on the cross beams. The brim steel connects multiple cross beams to improve the overall strength of the frame. The traction assembly is also fixed between the two beams. The traction assembly includes a pallet cross beam, such as Figure 6 and Figure 7 As shown, the top of the pallet crossbeam of a traditional traction assembly is a flat structure, and the brim steel cannot connect the crossbeams on both sides of the traction assembly. The brim steel is usually disconnected at the traction assembly, and the brim steel can only be welded to the side wall of the pallet crossbeam, resulting in a split distribution of the brim steel, which affects the overall strength of the frame. Utility Model Content

[0004] Based on this, it is necessary to provide a semi-trailer traction assembly to address the above technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a semi-trailer traction assembly, including a traction plate, on which two pallet cross beams and two pallet longitudinal beams are fixed, the two pallet longitudinal beams are located between the two pallet cross beams, the pallet cross beams are fixedly connected to the pallet longitudinal beams, a traction pin seat is fixed on the traction plate and located at the center of a rectangular area surrounded by the two pallet cross beams and the two pallet longitudinal beams, a traction pin is fixedly installed at the lower end of the traction pin seat, and notches are provided on the top ends of the two pallet cross beams, the two notches are arranged opposite to each other, and the connecting line of the two notches is located directly above the traction pin.

[0006] Preferably, the notch is in the shape of a trapezoidal groove.

[0007] Preferably, a support plate reinforcement plate adapted to the shape of the notch is fixed to the end surfaces of the two support plate cross beams facing away from each other and / or facing each other.

[0008] Preferably, the support plate cross beam includes an upper wing plate, a web plate and a lower wing plate which are sequentially connected from top to bottom, and the lower wing plate is fixedly connected to the traction plate.

[0009] Preferably, the support plate reinforcement plate includes a lower horizontal plate, two upper horizontal plates and two inclined side plates. The lower horizontal plate is arranged parallel to the two upper horizontal plates. The lower horizontal plate is located directly below the gap between the two upper horizontal plates. The lower horizontal plate and the upper horizontal plates are fixedly connected through the inclined side plates. The lower horizontal plate and the two inclined side plates are fixedly connected to the web plate, and the upper end surfaces of the two upper horizontal plates are fixedly connected to the lower end surfaces of the upper wing plates.

[0010] Preferably, a traction pin cover is fixed on the traction plate, and the traction pin cover is located in a rectangular area surrounded by two support plate cross beams and two support plate longitudinal beams. The traction pin cover is fixedly connected to the two support plate longitudinal beams, and the traction pin cover is located directly above the traction pin seat and covers the traction pin seat.

[0011] Preferably, a receiving groove adapted to the traction pin seat is provided at the lower end of the traction pin cover plate, and the top of the traction pin seat is located in the receiving groove.

[0012] The beneficial effects of the technical solution are as follows: by opening a notch at the top of the support plate crossbeam, the brim steel can pass through the notch and connect to the crossbeams on both sides of the traction assembly without being disconnected at the traction assembly. Compared with the welding connection between the end of the brim steel and the side wall of the support plate crossbeam, this connection method has a higher connection strength and can improve the overall strength of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional diagram of a traction assembly according to an embodiment of the present utility model;

[0014] Figure 2 It is a front view of a traction assembly according to an embodiment of the utility model;

[0015] Figure 3 for Figure 2 Sectional view along line AA;

[0016] Figure 4 This is a schematic diagram of the installation of a traction assembly on a vehicle frame according to an embodiment of the utility model;

[0017] Figure 5 A three-dimensional diagram of a traction assembly according to another embodiment of the present utility model;

[0018] Figure 6 A three-dimensional diagram of a traction assembly of the prior art;

[0019] Figure 7 It is a schematic diagram of installing a traction assembly on a vehicle frame in the prior art;

[0020] In the figure, 1, traction plate; 2, support plate cross beam; 21, upper wing plate; 22, web plate; 23, lower wing plate; 3, support plate longitudinal beam; 4, traction pin seat; 5, traction pin; 6, notch; 7, support plate reinforcement plate; 71, lower horizontal plate; 72, upper horizontal plate; 73, inclined side plate; 8, traction pin cover plate; 81, receiving groove; 9, brim steel. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0022] See also Figures 1 to 5 The embodiment of the present application provides a semi-trailer traction assembly, including a traction plate 1, on which two pallet cross beams 2 and two pallet longitudinal beams 3 are fixed, the two pallet longitudinal beams 3 are located between the two pallet cross beams 2, the pallet cross beams 2 are fixedly connected to the pallet longitudinal beams 3, a traction pin seat 4 is fixed on the traction plate 1 and located at the center of a rectangular area surrounded by the two pallet cross beams 2 and the two pallet longitudinal beams 3, a traction pin 5 is fixedly installed at the lower end of the traction pin seat 4, and notches 6 are provided at the top ends of the two pallet cross beams 2, the two notches 6 are arranged opposite to each other, and the connecting line of the two notches 6 is located directly above the traction pin 5.

[0023] The pallet crossbeam 2 of the present embodiment is improved on the pallet crossbeam 2 by opening a notch 6 at the top of the pallet crossbeam 2, so that the brim steel 9 can pass through the traction assembly through the notch 6 and be connected to the crossbeams on both sides of the traction assembly, and the bottom of the brim steel 9 is welded to the bottom of the notch 6, and there is no need to disconnect the brim steel 9 at the traction assembly. Compared with the method of welding the end of the brim steel 9 to the side wall of the pallet crossbeam 2, this connection method has higher connection strength, and the force between the brim steel 9 and the pallet crossbeam 2 will not be concentrated on the side wall of the pallet crossbeam 2, and the brim steel 9 will not be separated from the pallet crossbeam 2 due to cracking of the weld between the brim steel 9 and the side wall of the pallet crossbeam 2, thereby improving the overall strength of the frame.

[0024] In a preferred embodiment, Figure 1 As shown, the notch 6 is arranged in a trapezoidal groove shape, which is the same as the structure of the top of the beam, and can facilitate the installation of the brim steel 9 and prevent the top height of the brim steel 9 from being too high.

[0025] In a preferred embodiment, since the traction force point of the semi-trailer is concentrated on the traction assembly, in order to improve the overall strength of the traction assembly, the connection strength between the support beam 2 and the brim steel 9 is improved, such as Figures 1 to 3As shown, a support plate reinforcement plate 7 matching the shape of the notch 6 is fixed on the end surfaces of the two support plate cross beams 2 on the opposite sides. Figure 5 As shown, two pallet reinforcement plates 7 matching the shape of the notch 6 may be fixed on the end faces of the two pallet beams 2 facing each other and back to back; or, two pallet reinforcement plates 7 matching the shape of the notch 6 may be fixed on the end faces of the two pallet beams 2 facing each other.

[0026] In a preferred embodiment, in order to improve the structural strength of the support beam 2, as Figure 1 As shown, the support plate cross beam 2 includes an upper wing plate 21 , a web plate 22 and a lower wing plate 23 which are sequentially connected from top to bottom, and the lower wing plate 23 is fixedly connected to the traction plate 1 .

[0027] On the basis of the above embodiment, in order to improve the structural strength of the support plate reinforcement plate 7, as Figure 1 As shown, the support plate reinforcement plate 7 includes a lower horizontal plate 71, two upper horizontal plates 72 and two inclined side plates 73. The lower horizontal plate 71 is arranged parallel to the two upper horizontal plates 72. The lower horizontal plate 71 is located directly below the gap between the two upper horizontal plates 72. The lower horizontal plate 71 and the upper horizontal plates 72 are fixedly connected by the inclined side plates 73. The lower horizontal plate 71 and the two inclined side plates 73 are fixedly connected to the web 22. The upper end surfaces of the two upper horizontal plates 72 are fixedly connected to the lower end surfaces of the upper wing plates 21.

[0028] In a preferred embodiment, Figures 1 to 4 As shown, in order to protect the traction pin seat 4, a traction pin cover plate 8 is fixed on the traction plate 1, and the traction pin cover plate 8 is located in a rectangular area surrounded by two pallet cross beams 2 and two pallet longitudinal beams 3. The traction pin cover plate 8 is fixedly connected to the two pallet longitudinal beams 3, and the traction pin cover plate 8 is located directly above the traction pin seat 4 and covers the traction pin seat 4.

[0029] Based on the above embodiments, Figure 3 As shown, in order to enable the bottom of the traction pin seat 4 to be connected to the traction plate 1 , a traction pin cover plate 8 is provided with a receiving groove 81 adapted to the traction pin seat 4 at the lower end, and the top of the traction pin seat 4 is located in the receiving groove 81 .

[0030] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. 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, which 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.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A semitrailer traction assembly, comprising a traction plate (1), characterized in that: Two pallet cross beams (2) and two pallet longitudinal beams (3) are fixed on the traction plate (1), the two pallet longitudinal beams (3) are located between the two pallet cross beams (2), the pallet cross beams (2) and the pallet longitudinal beams (3) are fixedly connected, a traction pin seat (4) is fixed on the traction plate (1) and located at the center of a rectangular area surrounded by the two pallet cross beams (2) and the two pallet longitudinal beams (3), a traction pin (5) is fixedly mounted at the lower end of the traction pin seat (4), and notches (6) are provided at the top ends of the two pallet cross beams (2), the two notches (6) are arranged opposite to each other, and the connection line of the two notches (6) is located directly above the traction pin (5).

2. The semi-trailer traction assembly according to claim 1, characterized in that: The notch (6) is in the shape of a trapezoidal groove.

3. The semitrailer traction assembly according to claim 2, characterized in that: A support plate reinforcement plate (7) adapted to the shape of the notch (6) is fixed to the end surfaces of the two support plate cross beams (2) facing away from each other and / or facing each other.

4. The semitrailer traction assembly according to claim 3, characterized in that: The support plate cross beam (2) comprises an upper wing plate (21), a web plate (22) and a lower wing plate (23) which are connected in sequence from top to bottom, and the lower wing plate (23) is fixedly connected to the traction plate (1).

5. The semitrailer traction assembly according to claim 4, characterized in that: The support plate reinforcement plate (7) comprises a lower horizontal plate (71), two upper horizontal plates (72) and two inclined side plates (73); the lower horizontal plate (71) is arranged in parallel with the two upper horizontal plates (72); the lower horizontal plate (71) is located directly below the gap between the two upper horizontal plates (72); the lower horizontal plate (71) and the upper horizontal plates (72) are fixedly connected via the inclined side plates (73); the lower horizontal plate (71) and the two inclined side plates (73) are fixedly connected to the web plate (22); and the upper end surfaces of the two upper horizontal plates (72) are fixedly connected to the lower end surface of the upper wing plate (21).

6. The semitrailer traction assembly according to any one of claims 1 to 5, characterized in that: A traction pin cover plate (8) is fixed on the traction plate (1); the traction pin cover plate (8) is located in a rectangular area surrounded by two support plate cross beams (2) and two support plate longitudinal beams (3); the traction pin cover plate (8) is fixedly connected to the two support plate longitudinal beams (3); the traction pin cover plate (8) is located directly above the traction pin seat (4) and covers the traction pin seat (4).

7. The semitrailer traction assembly according to claim 6, characterized in that: The lower end of the traction pin cover plate (8) is provided with a receiving groove (81) adapted to the traction pin seat (4), and the top of the traction pin seat (4) is located in the receiving groove (81).

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