Adjustable connecting frame of semitrailer chassis

Abstract

The utility model relates to the technical field of trailer chassis connecting frames, and discloses an adjustable connecting frame of a semitrailer chassis, which comprises a semitrailer and a chassis, an adjustable connecting frame structure is mounted on the semitrailer and the chassis, and the adjustable connecting frame structure comprises contact plates in contact with two side surfaces of the semitrailer and the chassis. The two contact plates are moved to the positions making contact with the two sides of the semitrailer and the two sides of the chassis correspondingly, the first spring is moved to the position located at the lower end of the semitrailer and the lower end of the chassis, and the contact plates on the two sides are tensioned to be attached to the side walls of the semitrailer and the side walls of the chassis under the action of the first spring; according to the adjustable connecting frame for the chassis of the semitrailer, the lower end of the adjustable connecting frame is of a spring stretchable structure, the contact plates on the two sides are straightened and attached to the positions of the side faces of the semitrailer and the chassis through the effect of the first spring, punching is not needed, and the adjustable connecting frame is simple in structure and convenient to use. The device is suitable for installation of various different semitrailers and chassis.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailer chassis connecting frames, in particular to an adjustable connecting frame of a semi-trailer chassis. Background Art

[0002] A semitrailer is a trailer with an axle positioned behind the vehicle's center of gravity and equipped with a coupling device that transmits horizontal and vertical forces to the tractor. Semitrailers are generally three-axle and come in a variety of types, including 11-meter barn semitrailers, 13-meter barn semitrailers, and low-bed semitrailers. A heavy-duty transport vehicle connected to the semitrailer's front end via a towing pin, semitrailers primarily transport bulky, difficult-to-disassemble cargo, such as excavators. Barn-type trailers are more suitable for hauling fresh goods, such as vegetables and fruit. Box-type trailers are more suitable for hauling bulk cargo and moisture-resistant, valuable goods. To facilitate loading, a connecting frame is generally installed on the semitrailer chassis.

[0003] For example, an adjustable connecting frame of a semi-trailer chassis with the announcement number CN214930179U includes: a first frame body, a first mounting hole is provided on the side of the first frame body, and a first fixing hole connected to the first mounting hole is opened at the bottom of the first frame body; a connecting pipe, one end of the connecting pipe is movably inserted into the first mounting hole, and the connecting pipe is provided with multiple second fixing holes along its length direction; a second frame body, a second mounting hole is provided on the side of the second frame body, and a third fixing hole connected to the second mounting hole is opened at the bottom of the second frame body; the other end of the connecting pipe is movably inserted into the second mounting hole; a first fixing member and a second fixing member, the first fixing member is detachably arranged in the first fixing hole and the second fixing hole; the second fixing member is detachably arranged in the third fixing hole and the second fixing hole.

[0004] The above patented connecting frame is easy to install and has a wide range of applications. However, when in use, it is only suitable for installation between connecting frames with corresponding specifications of its connecting pipes. There are still certain limitations during installation, and the adjustable range is limited, which is inconvenient in actual use.

[0005] Therefore, we propose an adjustable connecting frame for a semi-trailer chassis in order to solve the problems raised above. Utility Model Content

[0006] The purpose of the utility model is to provide an adjustable connecting frame for a semi-trailer chassis to solve the problem proposed in the above background technology that, when in use, it is only applicable to the installation between connecting frames of corresponding specifications to its connecting pipes, there are still certain limitations during installation, and the adjustable range is limited, which is inconvenient in actual use.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an adjustable connecting frame for a semi-trailer chassis, comprising a semi-trailer and a chassis, wherein an adjustable connecting frame structure is installed on the semi-trailer and the chassis, wherein the adjustable connecting frame structure includes contact plates that contact the side surfaces of the semi-trailer and the chassis, and the lower ends of the contact plates are fixedly mounted with connecting blocks, and a plurality of springs are fixedly mounted between the two connecting blocks.

[0008] Preferably, telescopic plates are fixedly mounted on the sides of the connecting blocks, and clamping blocks are fixedly mounted on the sides of the telescopic plates.

[0009] Preferably, the concave surface of the block matches the contact surface of the semi-trailer and the chassis.

[0010] Preferably, a cavity is provided inside the telescopic plate.

[0011] Preferably, a plurality of springs 2 are fixedly installed at equal distances between the clamping block and the connecting block, and the springs 2 are arranged inside the chamber.

[0012] Preferably, a card slot is provided at the upper ends of both sides of the contact plate, a slider is slidably connected in the two card slots, and a connecting plate is fixedly installed on the sides of the two sliders.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Move the two contact plates to the positions in contact with both sides of the semi-trailer and the chassis respectively, move the spring 1 to the position at the lower end of the semi-trailer and the chassis, and under the action of the spring 1, tighten the contact plates on both sides to fit with the side walls of the semi-trailer and the chassis. At this time, connect the two contact plates together at the upper ends of the two contact plates. The adjustable connecting frame of the semi-trailer chassis adopts a spring tensile structure at the lower end. Through the action of the spring 1, the contact plates on both sides are straightened and fit to the position of the semi-trailer and the side of the chassis. No drilling is required and the structure is simple, which is suitable for installation on a variety of different semi-trailers and chassis.

[0015] 2. With the cooperation among the card slot, connecting block, spring 1, telescopic plate, chamber, spring 2, card block, connecting plate and slider, first pull the card block at the lower end to the position that fits with the inner side of the lower end of the semi-trailer and chassis. At this time, the telescopic plate and spring 2 are both in a stretched state. Move the contact plates on both sides to an angle that fits with the side walls of the semi-trailer and chassis. Spring 2 automatically pulls the card block back to fit with the inner wall of the lower end of the semi-trailer and chassis. Under the action of spring 1, the contact plates on both sides are automatically tightened. At this time, the connecting plate can be inserted into the two card slots through the slider to complete the fixation between the two contact plates. The contact plates on both sides can be kept at a fixed angle through the connecting plate. The setting of multiple springs can make the adjustable connecting frame structure more tightly connected to the semi-trailer and chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the adjustable connecting frame structure of the present utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure of the adjustable connecting frame structure of the present invention;

[0019] Figure 4 For the utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0020] In the figure: 1. semi-trailer and chassis; 2. adjustable connecting frame structure; 21. contact plate; 211. slot; 22. connecting block; 23. spring 1; 24. telescopic plate; 241. chamber; 242. spring 2; 25. block; 26. connecting plate; 261. slider. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1: Please refer to Figure 1 - Figure 3 An adjustable connecting frame of a semi-trailer chassis includes a semi-trailer and a chassis 1. An adjustable connecting frame structure 2 is installed on the semi-trailer and the chassis 1. The adjustable connecting frame structure 2 includes a contact plate 21 that contacts the side surfaces of the semi-trailer and the chassis 1. A connecting block 22 is fixedly installed at the lower end of each contact plate 21, and a plurality of springs 23 are fixedly installed between the two connecting blocks 22.

[0023] In this embodiment: the two contact plates 21 are respectively moved to positions in contact with both sides of the semi-trailer and the chassis 1, and the spring 1 23 is moved to a position at the lower end of the semi-trailer and the chassis 1. Under the action of the spring 1 23, the contact plates 21 on both sides are tightened to fit the side walls of the semi-trailer and the chassis 1. At this time, the two contact plates 21 are connected together at the upper ends of the two contact plates 21. The adjustable connecting frame of the semi-trailer chassis adopts a spring tensile structure at the lower end. Through the action of the spring 1 23, the contact plates 21 on both sides are straightened and fit to the side of the semi-trailer and the chassis 1. No drilling is required and the structure is simple, which is suitable for installation on a variety of different semi-trailers and chassis 1.

[0024] Example 2: This example is an improvement made on the basis of Example 1. For details, please refer to Figure 2 - Figure 4 The sides of the connecting blocks 22 are fixedly mounted with telescopic plates 24, and the sides of the telescopic plates 24 are fixedly mounted with clamping blocks 25, which can be clamped in the protrusions on the inner side of the lower end of the semi-trailer and the chassis 1.

[0025] The concave surface of the clamping block 25 matches the contact surface of the semi-trailer and the chassis 1. Through the cooperation between the clamping block 25, the semi-trailer and the chassis 1, the bracket can be fixed and prevented from falling. The installation of the connecting frame can be completed through a simple clamping limit structure.

[0026] A cavity 241 is defined inside the telescopic plate 24 , and the telescopic plate 24 is a hollow structure.

[0027] A plurality of springs 242 are fixedly installed at equal distances between the clamping block 25 and the connecting block 22. The springs 242 are arranged inside the chamber 241. The springs 242 can automatically pull the clamping block 25 toward the connecting block 22, so that the clamping block 25 is in close contact with the contact surface of the semi-trailer and the chassis 1.

[0028] A card slot 211 is provided at the upper end of both sides of the contact plate 21, and a slider 261 is slidably connected in the two card slots 211. A connecting plate 26 is fixedly installed on the sides of the two sliders 261. The connecting plate 26 is a retractable structure. Through the slider 261, the connecting plate 26 is suitable for connecting between semi-trailers and chassis 1 of various specifications.

[0029] In this embodiment: first, the clamping block 25 at the lower end is pulled to a position where it fits against the inner side of the lower end of the semi-trailer and the chassis 1. At this time, the telescopic plate 24 and the second spring 242 are both in a stretched state, and the contact plates 21 on both sides are moved to an angle that fits against the side walls of the semi-trailer and the chassis 1. The second spring 242 automatically pulls the clamping block 25 back to fit against the inner wall of the lower end of the semi-trailer and the chassis 1. Under the action of the first spring 23, the contact plates 21 on both sides are automatically tightened. At this time, the connecting plate 26 can be inserted into the two card slots 211 through the slider 261 to complete the fixation between the two contact plates 21. The connecting plate 26 can make the contact plates 21 on both sides at a fixed angle. The setting of multiple springs can make the connection between the adjustable connecting frame structure 2 and the semi-trailer and the chassis 1 tighter.

[0030] In summary, when using the adjustable connecting frame of the semi-trailer chassis, first move the spring 1 23 to the lower end of the semi-trailer and the chassis 1, pull the blocks 25 on both sides to engage with the semi-trailer and the chassis 1, and automatically tighten the blocks 25 through the spring 2 242. At this time, the contact plate 21 can be rotated to a position where it contacts the side surfaces of the semi-trailer and the chassis 1. Under the action of the spring 1 23, the contact plates 21 on both sides are tightened to fit the side surfaces of the semi-trailer and the chassis 1. At this time, the slider 261 can be slid into the slot 211, and the contact plates 21 on both sides are fixed through the connecting plate 26.

[0031] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An adjustable connecting frame for a semi-trailer chassis, comprising a semi-trailer and a chassis (1), characterized in that: An adjustable connecting frame structure (2) is installed on the semi-trailer and chassis (1), and the adjustable connecting frame structure (2) includes a contact plate (21) in contact with the side surfaces of the semi-trailer and chassis (1). The lower ends of the contact plates (21) are fixedly mounted with connecting blocks (22), and a plurality of springs (23) are fixedly mounted between the two connecting blocks (22).

2. The adjustable connecting frame of a semi-trailer chassis according to claim 1, characterized in that: The side surfaces of the connecting blocks (22) are fixedly mounted with telescopic plates (24), and the side surfaces of the telescopic plates (24) are fixedly mounted with clamping blocks (25).

3. The adjustable connecting frame of a semi-trailer chassis according to claim 2, characterized in that: The concave surface of the clamping block (25) fits in with the contact surface of the semi-trailer and the chassis (1).

4. The adjustable connecting frame of a semi-trailer chassis according to claim 3, characterized in that: A chamber (241) is provided inside the telescopic plate (24).

5. The adjustable connecting frame of a semi-trailer chassis according to claim 4, characterized in that: A plurality of second springs (242) are fixedly installed at equal intervals between the clamping block (25) and the connecting block (22), and the second springs (242) are arranged inside the chamber (241).

6. The adjustable connecting frame of a semi-trailer chassis according to claim 5, characterized in that: A card slot (211) is provided at the upper ends of both sides of the contact plate (21), a slider (261) is slidably connected in the two card slots (211), and a connecting plate (26) is fixedly mounted on the sides of the two sliders (261).

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