Special vehicle universal type rear protection device with inclined struts

Abstract

The utility model relates to a special vehicle universal type rear protection device with inclined struts, which comprises a protection rod, and two symmetrically arranged girder connecting seats are fixed in the middle of the protection rod; the chassis girder is provided with at least one row of girder hole sites which are arranged at equal intervals along the length direction of the chassis girder; a vertical long-strip-shaped hole is formed in the upper end of the girder connecting seat, and the vertical long-strip-shaped hole is fixedly connected with the girder hole site through a bolt; and a length-adjustable inclined strut is fixedly connected between the girder connecting seat and the chassis girder. According to the scheme that long-strip-shaped holes and arc-shaped long-strip-shaped holes are designed in all the components, the purposes that the size of the chassis girder is changed, and the rear protection device is universal are achieved, and meanwhile the inclined struts are designed, so that the rear protection device can meet the strength test required by laws and regulations.

Description

Technical Field

[0001] The utility model relates to the technical field of special vehicles, in particular to a universal rear protection device with an oblique brace for special vehicles. Background Art

[0002] At present, with the continuous increase in sales of special-purpose vehicles, more and more types of chassis and manufacturers are developed for special-purpose vehicles, and the rear of the vehicle needs to be equipped with a rear protection device that meets the specified strength. There are currently two main types of rear protection for special-purpose vehicles on the market: the first is an integral welded rear protection device; the second is a split-assembly rear protection device without diagonal braces.

[0003] The first type of integrally welded rear guard cannot be universally used due to the size differences of chassis frames, which makes it difficult for modification factories to prepare materials and increases costs.

[0004] The second type of split-assembly rear protection device without diagonal braces achieves compatibility with different chassis, but due to the lack of diagonal braces, the protection strength is insufficient and cannot meet regulatory requirements when conducting protection strength tests. Summary of the Invention

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a universal rear protection device for special vehicles with an oblique brace.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A universal rear protection device for special vehicles with an oblique brace comprises a protection bar, two symmetrically arranged beam connecting seats are fixed to the middle of the protection bar, and the upper ends of the beam connecting seats are respectively fixedly connected to corresponding chassis beams;

[0008] The chassis beam is provided with at least one row of beam holes spaced at equal intervals along the length direction of the chassis beam; the upper end of the beam connecting seat is provided with a vertical long strip hole, and the vertical long strip hole is fixed to the beam hole by bolts;

[0009] A length-adjustable diagonal brace is fixedly connected between the beam connecting seat and the chassis beam, and a concentric upper center hole and an upper arc-shaped long hole are provided on the upper end of the diagonal brace. The upper center hole and the upper arc-shaped long hole are respectively fixed to two adjacent beam holes in the same row by bolts;

[0010] The lower end of the diagonal brace is provided with a concentric lower center hole and a lower arc-shaped long hole, and the lower center hole and the lower arc-shaped long hole are respectively fixed to the mounting hole positions corresponding to the lower end of the beam connecting seat by bolt connection.

[0011] Furthermore, the lower end of the beam connecting seat is connected and fixed to the protective rod by bolts.

[0012] Furthermore, the diagonal brace includes an upper support and a lower support, the lower end of the upper support is provided with a long strip adjustment hole arranged along its length direction, and the long strip adjustment hole is connected and fixed to the mounting hole at the upper end of the lower support by a bolt.

[0013] The utility model adopts the above technical solution, which has the beneficial effect of: by designing long strip holes and arc-shaped long strip holes in various components, the purpose of achieving the change in chassis frame size and the universality of the rear protective device is achieved, and at the same time, the diagonal brace is designed to enable the rear protective device to meet the strength test requirements of regulations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a side view of the utility model;

[0017] Figure 3 It is a front view of the utility model;

[0018] Figure 4 Schematic diagram of the three-dimensional structure of the protection rod;

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the beam connecting seat;

[0020] Figure 6 This is the front view of the upper and lower supports. DETAILED DESCRIPTION

[0021] like Figure 1-6 As shown, the utility model is a universal rear protection device for special vehicles with diagonal braces, including a protection bar 1, two symmetrically arranged beam connecting seats 2 are fixed in the middle of the protection bar 1, the lower ends of the beam connecting seats 2 are connected and fixed to the protection bar 1 by bolts, and the upper ends of the beam connecting seats 2 are respectively fixedly connected to the corresponding chassis beams 3.

[0022] The chassis beam 3 is provided with at least one row of beam holes 31 spaced evenly along the length of the chassis beam 3; the upper end of the beam connecting seat 2 is provided with a vertical long strip hole 21, and the vertical long strip hole 21 is fixed to the beam hole 31 by bolts;

[0023] An adjustable-length diagonal brace 4 is fixed between the beam connector 2 and the chassis beam 3. The diagonal brace 4 comprises an upper support 41 and a lower support 42. The lower end of the upper support 41 is provided with an elongated adjustment hole 411 extending along its length. This elongated adjustment hole 411 is bolted to a mounting hole 421 at the upper end of the lower support 42. The length of the diagonal brace 4 can be adjusted to accommodate rear guards of chassis beams 3 of varying sizes.

[0024] The upper end of the upper support 41 is provided with a concentric upper center hole 412 and an upper arc-shaped long hole 413. The upper center hole 412 and the upper arc-shaped long hole 413 are respectively fixed to two adjacent beam holes 31 in the same row by bolts.

[0025] The lower end of the lower support 42 is provided with a concentric lower center hole 422 and a lower arc-shaped long hole 423, and the lower center hole 422 and the lower arc-shaped long hole 423 are respectively fixed to the mounting holes corresponding to the lower end of the beam connecting seat 2 by bolt connection.

[0026] If the chassis frame 3's dimensions H (ground clearance) or D (the distance between the two chassis frames 3) change, the rear guard can adjust the mounting position and angle of each component through the designed elongated and arc-shaped holes, achieving universal compatibility with chassis frames 3 of varying sizes. Furthermore, the addition of diagonal braces 4 increases the overall strength of the rear guard, making the structure more stable and reliable while also meeting regulatory strength tests.

[0027] The above describes the specific implementation of the present invention, but those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this implementation without departing from the principle and essence of the present invention, but these changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A universal rear guard device for special vehicles with a diagonal brace, comprising a guard bar, two symmetrically arranged beam connectors fixed to the middle of the guard bar, the upper ends of each beam connector being fixedly connected to a corresponding chassis beam; characterized in that: The chassis beam is provided with at least one row of beam holes spaced at equal intervals along the length direction of the chassis beam; the upper end of the beam connecting seat is provided with a vertical long strip hole, and the vertical long strip hole is fixed to the beam hole by bolts; A length-adjustable diagonal brace is fixedly connected between the beam connecting seat and the chassis beam, and a concentric upper center hole and an upper arc-shaped long hole are provided on the upper end of the diagonal brace. The upper center hole and the upper arc-shaped long hole are respectively fixed to two adjacent beam holes in the same row by bolts; The lower end of the diagonal brace is provided with a concentric lower center hole and a lower arc-shaped long hole, and the lower center hole and the lower arc-shaped long hole are respectively fixed to the mounting hole positions corresponding to the lower end of the beam connecting seat by bolt connection.

2. A universal rear protection device for special vehicles with diagonal braces according to claim 1, characterized in that: The lower end of the beam connecting seat is connected and fixed to the protective rod through bolts.

3. The universal rear protection device with diagonal bracing for special vehicles according to claim 1, characterized in that: The diagonal brace includes an upper support and a lower support. The lower end of the upper support is provided with a long strip adjustment hole arranged along its length direction. The long strip adjustment hole is connected and fixed with the mounting hole at the upper end of the lower support by a bolt.

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