A trailer chassis

Abstract

The utility model discloses a trailer chassis, comprising two groups of main beams and multiple groups of cross beams, the cross beams are fixedly connected between the two groups of main beams, the two sides of the main beams are respectively fixedly connected with a front beam and a rear beam, a plurality of through holes are provided on one side of the cross beam, a first steel bar matched with the through holes is fixedly connected between the front beam and the rear beam, an anti-bending mechanism is provided at the bottom of the main beam, the advantages of the utility model are as follows: the main beam and the cross beam are integrally processed and formed, and the chassis body is formed in conjunction with the front beam and the rear beam, the first steel bar is penetrated through the cross beam, and the second steel bar is obliquely arranged to strengthen the connection between the first steel bar and the cross beam, thereby further enhancing the stability and strength of the cross beam, and then the ladder block is clamped to the inside of the limiting groove, so that the support plate limits the cross beam, which can prevent the cross beam from bending or breaking.

Description

Technical Field

[0001] The utility model relates to the technical field of trailer underframes, in particular to a trailer underframe. Background Art

[0002] A trailer is a trailer with the axle placed behind the center of gravity of the vehicle and equipped with a coupling device that can transmit horizontal and vertical forces to the tractor. Since the semi-trailer body is very long, the semi-trailer beam is the main load-bearing component of the semi-trailer body and plays the role of supporting the car body.

[0003] The prior art proposes a novel underframe of a semi-trailer, such as a Chinese patent [application number CN202321684120.9], which includes two sets of main beams and multiple sets of cross beams, wherein the two ends of the multiple sets of cross beams are respectively mounted on the inner side walls between the two sets of main beams; and further includes a back-hanging device, multiple sets of connecting plates, bolts and a front beam, wherein the multiple sets of connecting plates are respectively arranged at the two ends of the multiple sets of cross beams, the multiple sets of connecting plates are respectively connected to the outer side walls of the two sets of main beams, and the multiple sets of bolts are respectively screwed on the multiple sets of connecting plates; although the patent can improve the overall structural stability of the underframe of the semi-trailer by using multiple sets of bolts to be screwed on the multiple sets of connecting plates respectively, so that the multiple sets of bolts can fix the multiple sets of connecting plates and the multiple sets of main beams for a second time; however, the above patent has certain defects during use. For example, in normal use, the cross beams are easily bent due to pressure after long-term use, or they are broken off from the connection between the cross beams and the main beams, and they may even fall off, which will bring certain dangers. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a trailer chassis.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A trailer underframe comprises two groups of main beams and multiple groups of cross beams, wherein the cross beams are fixedly connected between the two groups of main beams, a front beam and a rear beam are fixedly connected to the two sides of the main beams respectively, a plurality of through holes are provided on one side of the cross beams, a first steel bar matched with the through holes is fixedly connected between the front beam and the rear beam, and an anti-bending mechanism is provided at the bottom of the main beams.

[0007] Preferably, a card slot is provided at the bottom of the two groups of main beams, and limiting slots are provided on the inner walls on both sides of the card slot. The anti-bending mechanism includes a support plate that contacts the cross beam, and both sides of the top of the support plate are fixedly connected with card blocks that are compatible with the card slot. Both sides of the card block are provided with placement slots, and the interior of the placement slot is slidably connected with a ladder block that is compatible with the limiting slot. The interior of the placement slot is fixedly connected with a spring, and the other end of the spring is fixedly connected to the ladder block. The ladder block is located inside the limiting slot.

[0008] Preferably, connection holes are provided on both sides of the main beam, and the connection holes are connected to the limiting grooves.

[0009] Preferably, a second steel bar is fixedly connected to the first steel bar, the other end of the second steel bar is fixedly connected to the crossbeam, and the second steel bar is arranged obliquely.

[0010] The beneficial effect of the utility model is that the trailer chassis provided by the utility model, when working, the main beam and the cross beam are integrally processed and formed, and the front beam and the rear beam are cooperated to form the chassis body, and the first steel bar is penetrated through the cross beam, and the second steel bar is obliquely arranged to strengthen the connection between the first steel bar and the cross beam, thereby further enhancing the stability and strength of the cross beam, and then the ladder block is clamped in the inside of the limiting groove, so that the support plate limits the cross beam, which can prevent the cross beam from bending or breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a basic structural schematic diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the anti-bending mechanism of the utility model. DETAILED DESCRIPTION

[0013] 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.

[0014] 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" 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.

[0015] like Figure 1 - Figure 2As shown, the utility model provides a trailer chassis, including two groups of main beams 1 and multiple groups of cross beams 2, the cross beams 2 are fixedly connected between the two groups of main beams 1, the front beams 3 and the rear beams 4 are fixedly connected on both sides of the main beams 1, a plurality of through holes 5 are provided on one side of the cross beam 2, a first steel bar 6 matched with the through hole 5 is fixedly connected between the front beam 3 and the rear beam 4, and an anti-bending mechanism 7 is provided at the bottom of the main beam 1; when working, the main beam 1 and the cross beam 2 are integrally processed and formed, and the front beam 3 and the rear beam 4 are cooperated to form the chassis body, and the first steel bar 6 is provided through the cross beam 2 to enhance the stability and strength of the cross beam 2.

[0016] The bottom of the two sets of main beams 1 are provided with a card slot 8, and the inner walls on both sides of the card slot 8 are provided with a limit slot 9. The anti-bending mechanism 7 includes a support plate 71 that conflicts with the cross beam 2. The top of the support plate 71 is fixedly connected with a card block 72 that matches the card slot 8. Both sides of the card block 72 are provided with a placement groove 73. The interior of the placement groove 73 is slidably connected with a ladder block 74 that matches the limit slot 9. The interior of the placement groove 73 is fixedly connected with a spring 75. The other end of the spring 75 is connected to the ladder block 74. Fixed connection, the ladder block 74 is located inside the limiting groove 9, and connecting holes 10 are opened on both sides of the main beam 1, and the connecting holes 10 are connected to the limiting groove 9; by clamping the ladder block 74 into the limiting groove 9, the support plate 71 limits the cross beam 2, which can prevent the cross beam 2 from bending or breaking. When disassembly is required, a foreign object can be inserted into the connecting hole 10 to disengage the ladder block 74 from the limiting groove 9, and the support plate 71 can be removed, so that the user can choose according to the load of the chassis.

[0017] A second steel bar 11 is fixedly connected to the first steel bar 6 , and the other end of the second steel bar 11 is fixedly connected to the crossbeam 2 . The second steel bar 11 is inclined. The inclined second steel bar 11 can strengthen the connection between the first steel bar 6 and the crossbeam 2 , thereby further enhancing the stability and strength of the crossbeam 2 .

[0018] Working principle: During operation, the main beam 1 and the cross beam 2 are integrally formed, and cooperate with the front beam 3 and the rear beam 4 to form the main body of the chassis. By penetrating the first steel bar 6 in the cross beam 2, the inclined second steel bar 11 can strengthen the connection between the first steel bar 6 and the cross beam 2, thereby further enhancing the stability and strength of the cross beam 2. Then, by clamping the ladder block 74 into the inside of the limiting groove 9, the support plate 71 limits the cross beam 2, which can prevent the cross beam 2 from bending or breaking.

[0019] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A trailer chassis, comprising two sets of main beams (1) and multiple sets of cross beams (2), characterized in that: The cross beam (2) is fixedly connected between two groups of main beams (1); a front beam (3) and a rear beam (4) are fixedly connected to both sides of the main beam (1), a plurality of groups of through holes (5) are provided on one side of the cross beam (2); a first steel bar (6) adapted to the through holes (5) is fixedly connected between the front beam (3) and the rear beam (4); and an anti-bending mechanism (7) is provided at the bottom of the main beam (1).

2. A trailer chassis according to claim 1, characterized in that: The bottoms of the two groups of main beams (1) are provided with a slot (8), and the inner walls on both sides of the slot (8) are provided with a limit slot (9). The anti-bending mechanism (7) comprises a support plate (71) that contacts the cross beam (2), and the top sides of the support plate (71) are fixedly connected with a block (72) that matches the slot (8), and the two sides of the block (72) are provided with a placement slot (73), and the inside of the placement slot (73) is slidably connected with a ladder block (74) that matches the limit slot (9), and the inside of the placement slot (73) is fixedly connected with a spring (75), and the other end of the spring (75) is fixedly connected with the ladder block (74), and the ladder block (74) is located inside the limit slot (9).

3. The trailer chassis according to claim 1, characterized in that: Connection holes (10) are provided on both sides of the main beam (1), and the connection holes (10) are connected to the limiting grooves (9).

4. The trailer chassis according to claim 1, characterized in that: A second steel bar (11) is fixedly connected to the first steel bar (6), the other end of the second steel bar (11) is fixedly connected to the crossbeam (2), and the second steel bar (11) is arranged obliquely.

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