Semitrailer girder connecting device

Abstract

The utility model belongs to the technical field of semitrailer girders, and discloses a semitrailer girder connecting device which comprises a first girder, connecting ends are arranged at the two ends of the first girder and the two ends of a second girder, first bolt pin holes are formed in the middles and the two ends of the connecting ends, and first connecting pieces are arranged at the bottoms of the connecting ends. Movable plates are arranged at the two ends of the top of the first connecting piece and the two sides of the middle of the first connecting piece, first bolt pin holes are formed in the movable plates, and the two movable plates on the same position of the first connecting piece are connected through bolt pins. And meanwhile, the tops of the spliced connecting ends are limited through the second connecting pieces, so that the stability between the two spliced connecting ends is guaranteed, finally, the reinforcing effect is achieved through bolt pins matched with the movable plates and nuts, and therefore the purpose of connecting the two girders is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of semitrailer beams, and in particular relates to a semitrailer beam connecting device. Background Art

[0002] The semi-trailer beam, also known as the frame, is the base of the semi-trailer. It is generally composed of two longitudinal beams and multiple cross beams. It is supported on the wheels through the suspension device, front axle and rear axle. The semi-trailer beam has sufficient strength and rigidity to withstand the load of the semi-trailer and the impact of the wheels. It is the main component of the semi-trailer. There are many longitudinal sub-beams near the beam, which constitute the overall cargo consignment platform of the semi-trailer. The beam of the semi-trailer accessories is generally called the longitudinal beam, which is divided into the left longitudinal beam and the right longitudinal beam. The cross-section is generally I-shaped, consisting of upper and lower wing plates and a middle web plate, and the suspension bracket is welded to the lower wing plate of the longitudinal beam.

[0003] At present, the existing semi-trailer beams are all integrated structures, and it is difficult to connect and assemble the beams. When the semi-trailer beam needs to be lengthened and extended, a new beam needs to be replaced, which is not only cumbersome, time-consuming and labor-intensive, but also costly. For this reason, we propose a semi-trailer beam connection device. Utility Model Content

[0004] The purpose of the utility model is to provide a semi-trailer beam connecting device to solve the existing problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a semi-trailer beam connecting device, comprising a first beam, a second beam, a connecting end and a first connecting piece, wherein the first beam and the second beam are both ends provided with connecting ends, the middle part and both ends of the connecting end are provided with first pin holes, the bottom of the connecting end is provided with a first connecting piece, the top ends and both sides of the middle part of the first connecting piece are movably connected with movable plates, the movable plates are also provided with first pin holes, the two movable plates at the same position of the first connecting piece are connected by a pin, and the pin passes through the first pin holes on the connecting ends of the adjacent ends of the first beam and the second beam and is fixed by a nut.

[0006] Preferably, the positions of the first pin holes at the top two ends and the middle of the connecting end are both free from the second connecting piece, the second connecting piece is a frame-type structure, and the second pin holes are opened at both ends of the second connecting piece. The pin passes through the two second pin holes on the same second connecting piece and is fixed by a nut.

[0007] Preferably, grooves are provided at both ends and in the middle of the top of the connecting terminal, and the second connecting piece is embedded in the groove and the top is flush with the top of the connecting terminal.

[0008] Preferably, a limiting groove is provided on one side of the bottom end of the connecting end, and the limiting grooves at the bottom ends of the first beam and the second connecting end are both provided inwardly.

[0009] Preferably, a limiting protrusion is provided on the inner side of the top of the first connecting member, and the limiting protrusion extends to the inside of the limiting groove and is slidably connected to the inner wall thereof.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The bottom of the mutually spliced ​​connection ends is limited by using the frame structure of the first connecting member, and the top of the mutually spliced ​​connection ends is limited by using the second connecting member, so as to ensure the stability between the two mutually spliced ​​connection ends. Finally, the pin is used in combination with the movable plate and the nut to achieve the reinforcement effect, so as to achieve the purpose of connecting the two beams.

[0012] 2. By opening a limiting groove at the connecting end and setting a limiting protrusion on the inner side of the top end of the first connecting piece, it can play a good limiting role after installation, which can not only prevent the first connecting piece from falling off the connecting end, but also improve the stability of the connection between the two connecting ends. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the first connecting member and the second connecting member of the utility model;

[0015] Figure 3 It is a schematic diagram of the movable plate structure of the utility model.

[0016] In the figure: 1. first beam; 2. second beam; 3. connecting end; 4. first pin hole; 5. groove; 6. limiting groove; 7. first connecting member; 8. limiting protrusion; 9. movable plate; 10. pin; 11. second connecting member; 12. second pin hole. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-3The utility model provides a technical solution for a semi-trailer beam connecting device: it includes a first beam 1, a second beam 2, a connecting end 3 and a first connecting member 7, both ends of the first beam 1 and the second beam 2 are provided with connecting ends 3, the middle and both ends of the connecting end 3 are provided with first pin holes 4, the bottom of the connecting end 3 is provided with a first connecting member 7, the top ends and both sides of the middle of the first connecting member 7 are movably connected with movable plates 9, the movable plates 9 are also provided with first pin holes 4, the two movable plates 9 at the same position of the first connecting member 7 are connected by a pin 10, the pin 10 passes through the first pin holes 4 on the connecting ends 3 at adjacent ends of the first beam 1 and the second beam 2 and is fixed by a nut.

[0019] Specifically, the top two ends and the middle of the connecting end 3 corresponding to the first pin hole 4 are both free second connecting parts 11, and the second connecting part 11 is a frame-type structure. Second pin holes 12 are opened at both ends of the second connecting part 11. The pin 10 passes through the two second pin holes 12 on the same second connecting part 11 and is fixed by a nut.

[0020] Specifically, grooves 5 are provided at both ends and the middle of the top of the connecting terminal 3 , and the second connecting member 11 is embedded in the groove 5 and the top is flush with the top of the connecting terminal 3 .

[0021] Specifically, a limiting groove 6 is provided on one side of the bottom end of the connecting end 3, and the limiting grooves 6 at the bottom ends of the first beam 1 and the second connecting end 3 are both provided inwardly.

[0022] Specifically, a limiting protrusion 8 is provided on the inner side of the top of the first connecting member 7 , and the limiting protrusion 8 extends to the inside of the limiting groove 6 and is slidably connected with the inner wall thereof.

[0023] In this embodiment, when the first connecting member 7 and the second connecting member 11 are used to connect and assemble the first beam 1 and the second beam 2, the first beam 1 and one end of the second beam 2 are tightly connected to each other through external equipment, so that the first pin holes 4 on the two connecting ends 3 are aligned, and then the first connecting member 7 is aligned with the two adjacent limiting grooves 6 and inserted, so that the limiting protrusion 8 is inserted into the inside of the limiting groove 6 to form a stable limit, and then the second connecting member 11 is respectively inserted into the inside of the groove 5 of the corresponding size, so that the second pin hole 12 on the second connecting member 11 is aligned with the first pin hole 4, and then the movable plate 9 is turned over, and the first pin hole 4 on the movable plate 9 is aligned with the first pin hole 4 on the connecting end 3, and finally the pin 10 is inserted so that it passes through the two movable plates 9 at the same position on the first connecting member 7, and is fixedly connected with a nut, thereby realizing the connection between the first beam 1 and the second beam 2 and achieving the purpose of assembly.

[0024] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A semitrailer beam connecting device, comprising a first beam (1), a second beam (2), a connecting end (3) and a first connecting member (7), characterized in that: Both ends of the first beam (1) and the second beam (2) are provided with connecting ends (3), the middle and both ends of the connecting ends (3) are provided with first pin holes (4), the bottom of the connecting end (3) is provided with a first connecting piece (7), the top ends and both sides of the middle of the first connecting piece (7) are movably connected with movable plates (9), the movable plates (9) are also provided with first pin holes (4), the two movable plates (9) at the same position of the first connecting piece (7) are connected by a pin (10), and the pin (10) passes through the first pin holes (4) on the connecting ends (3) at the adjacent ends of the first beam (1) and the second beam (2) and is fixed by a nut.

2. A semitrailer beam connecting device according to claim 1, characterized in that: The top two ends and the middle of the connection end (3) corresponding to the first pin hole (4) are all free second connection pieces (11); the second connection piece (11) is a frame-type structure; the two ends of the second connection piece (11) are provided with second pin holes (12); the pin (10) passes through the two second pin holes (12) on the same second connection piece (11) and is fixed by a nut.

3. A semitrailer beam connecting device according to claim 2, characterized in that: Grooves (5) are provided at both ends and in the middle of the top of the connecting terminal (3); the second connecting piece (11) is embedded in the groove (5) and its top is flush with the top of the connecting terminal (3).

4. A semitrailer beam connecting device according to claim 1, characterized in that: A limiting groove (6) is provided on one side of the bottom end of the connecting end (3), and the limiting grooves (6) at the bottom ends of the first beam (1) and the second connecting end (3) are both provided inwardly.

5. A semitrailer beam connecting device according to claim 1, characterized in that: A limiting protrusion (8) is provided on the inner side of the top of the first connecting member (7), and the limiting protrusion (8) extends to the inside of the limiting groove (6) and is slidably connected to the inner wall thereof.

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