Rear protective bar structure of semitrailer

Abstract

The utility model discloses a rear protective bar structure of a semitrailer, which belongs to the technical field of trailer protection and comprises a mounting plate and a protective bar arranged on the side of the mounting plate, a connecting piece is arranged between the mounting plate and the protective bar, and a mounting component is arranged between the connecting piece and the mounting plate. Each connecting piece comprises one end of an extension rod arranged on the inner side face of the protective bar, a fixing cylinder arranged at the other end of the extension rod and a damping unit arranged on the outer side of the fixing cylinder. The mounting assembly comprises a fixing base mounted on the side face of the mounting plate, a connecting base arranged in the fixing base and a limiting unit arranged between the connecting base and the fixing base, the connecting base and the fixing cylinder are integrally formed, and a locking unit is arranged on the outer side of the connecting base; the locking unit comprises a locking ring connected to the outer side of the connecting base in a threaded mode and a positioning hole formed in the top face of the locking ring. By means of the installation assembly, the protective bar and the connecting piece can be replaced conveniently, and time and labor are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to trailer protection technical field, especially a kind of semi-trailer rear protection pole structure. BACKGROUND

[0002] Trailer rear protection pole refers to the device installed in the rear of trailer, for protecting trailer from colliding with other vehicles or obstacles during driving, this kind of protection pole is usually made of solid material, such as steel, can absorb and reduce impact force when colliding, protect the rear structure of trailer and vehicle interior goods from being damaged, the installation of trailer rear protection pole can usually improve driving safety, reduce the damage degree of vehicle and goods when accident occurs.

[0003] The existing protection pole is generally installed and fixed with trailer by welding, when the protection pole is damaged, the protection strength of protection pole will be greatly reduced, it needs to be replaced, but the protection pole is extremely inconvenient when being replaced, time-consuming and laborious.

[0004] Therefore, it is urgent to provide a kind of semi-trailer rear protection pole structure to solve the above problems. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned prior art protection pole, which is generally installed and fixed with trailer by welding, when the protection pole is damaged, the protection strength of protection pole will be greatly reduced, it needs to be replaced, but the protection pole is extremely inconvenient when being replaced, time-consuming and laborious, and provide a kind of semi-trailer rear protection pole structure.

[0006] To solve the above technical problems, one technical scheme of the utility model is to provide a kind of semi-trailer rear protection pole structure, including mounting plate, protection pole arranged on the side of mounting plate, connecting piece arranged between mounting plate and protection pole, mounting assembly arranged between connecting piece and mounting plate.

[0007] The connecting piece includes one end of the extension rod arranged on the inner side of protection pole, the fixing cylinder arranged on the other end of the extension rod, the damping unit arranged on the outer side of the fixing cylinder.

[0008] The mounting assembly includes fixing seat arranged on the side of mounting plate, connecting seat arranged in the interior of fixing seat, limiting unit arranged between connecting seat and fixing seat, the connecting seat is integrally formed with fixing cylinder, and the outer side of connecting seat is provided with locking unit.

[0009] The utility model is further provided as follows: the outer side of protection pole is provided with groove, and the interior of groove is provided with reinforcing plate.

[0010] The utility model further sets up: the quantity of connecting piece has two groups, two groups connecting piece opposite setting between mounting panel and protection pole,

[0011] The connecting piece further includes a buffer spring arranged between the fixed cylinder and the extension rod.

[0012] The utility model further sets up: one end of extension rod is installed with connecting disc, the inner side of connecting disc and protection pole is connected through bolt fixedly.

[0013] The utility model further sets up: the quantity of damping unit has multiple groups, and multiple groups damping unit is circular array distribution with the center point of fixed cylinder as the center;

[0014] The damping unit includes a damping spring arranged outside a threaded rod mounted on the side of the connecting disc, an installation seat mounted on the outer surface of the fixed cylinder, the threaded rod is arranged inside the installation seat, and a locking sleeve is threadedly connected to the outer side of the threaded rod.

[0015] The utility model further sets up: the quantity of limiting unit has multiple groups, and multiple groups limiting unit is circular array distribution with the center point of connecting seat as the center;

[0016] The limiting unit includes a receiving groove arranged on the side of the connecting seat, one end of an extrusion member mounted on the side wall of the receiving groove, and one end of a limiting block mounted on the other end of the extrusion member, and the side wall of the fixed seat is provided with a limiting groove with a size matching the other end of the limiting block.

[0017] The utility model further sets up: the locking unit includes a locking ring threadedly connected to the outer side of the connecting seat, a positioning hole arranged on the top surface of the locking ring, a locking rod arranged inside the positioning hole, and an elastic member arranged at the bottom of the locking rod.

[0018] The utility model has the advantages of:

[0019] 1. The utility model discloses a mounting assembly, when the protection pole needs to be replaced, first, the bolt is disassembled by using the tool, so that the connecting disc and the protection pole are separated, and the protection pole is disassembled, when the connecting piece is damaged, the locking rod is pressed to make it retract to the inside of the mounting plate, so that the locking rod and the positioning hole are separated, then the locking ring is rotated to make it separate from the mounting plate, then the limiting block is pressed to make it retract to the inside of the receiving groove, so that the limiting block and the limiting groove are separated, so that the limiting of the connecting seat is released, and the connecting piece is disassembled as a whole, the protection pole and the connecting piece are convenient to replace, and time and effort are saved. DRAWINGS

[0020] Figure 1 It is the first view structure diagram of the utility model.

[0021] Figure 2 The second perspective view structure of the utility model;

[0022] Figure 3 The utility model discloses a Figure 2 The partial close -up view of A in middle;

[0023] Figure 4 The utility model discloses a

[0024] Figure 5 The utility model discloses a Figure 4 The partial close -up view of B in middle;

[0025] Figure 6 The utility model discloses a

[0026] Figure 7 The utility model discloses a Figure 6 The partial close -up view of C in middle.

[0027] In the drawing: 1, mounting plate; 2, protection pole; 21, recess; 22, reinforcing plate; 3, connecting piece; 31, extension rod; 311, connecting disc; 32, fixed cylinder; 33, damping unit; 331, threaded rod; 332, damping spring; 333, mounting seat; 334, locking sleeve; 34, buffer spring; 4, mounting assembly; 41, fixed seat; 42, connecting seat; 43, limiting unit; 431, extrusion piece; 432, limiting block; 433, limiting groove; 44, locking unit; 441, locking ring; 442, locking rod; 443, elastic piece. DETAILED DESCRIPTION

[0028] The advantages and features of the utility model will be more easily understood by the person skilled in the art with the preferred embodiments of the utility model being specifically described in conjunction with the drawings, so that the protection scope of the utility model can be more clearly and definitely defined.

[0029] Please refer to Figure 1 - Figure 7 A rear protection pole structure of semitrailer, including mounting plate 1, set up in the protection pole 2 of mounting plate 1 side portion, mounting plate 1 with the rear of semitrailer is integrally formed and is set up, mounting plate 1 with the protection pole 2 between setting up connecting piece 3, connecting piece 3 is used for connecting mounting plate 1 with the protection pole 2, connecting piece 3 with mounting plate 1 between setting up mounting assembly 4, mounting assembly 4 is used for quickly to connecting piece 3 with the protection pole 2 and is disassembled;

[0030] Connecting piece 3 includes the one end of extension rod 31 setting up in the inner side of protection pole 2, fixed cylinder 32 setting up in the other end of extension rod 31, damping unit 33 setting up in the outer side of fixed cylinder 32;

[0031] The mounting assembly 4 comprises a fixing seat 41 mounted on the side of the mounting plate 1, a connecting seat 42 arranged in the fixing seat 41, and a limiting unit 43 arranged between the connecting seat 42 and the fixing seat 41. The connecting seat 42 is integrally formed with the fixing cylinder 32, and the outer side of the connecting seat 42 is provided with a locking unit 44.

[0032] The outer side of the guard bar 2 is provided with a groove 21, and the groove 21 is provided with a reinforcing plate 22. The reinforcing plate 22 improves the structural strength of the guard bar 2.

[0033] The connecting piece 3 comprises two groups of connecting pieces 3 arranged opposite to each other between the mounting plate 1 and the guard bar 2.

[0034] The connecting piece 3 further comprises a buffer spring 34 arranged between the fixing cylinder 32 and the extension rod 31. The buffer spring 34 is used for buffering the impact force received by the guard bar 2.

[0035] One end of the extension rod 31 is provided with a connecting disc 311. The connecting disc 311 is fixedly connected to the inner side of the guard bar 2 through bolts, facilitating disassembly of the extension rod 31.

[0036] The damping unit 33 comprises a plurality of groups of damping units 33 arranged in a circumferential array with the center point of the fixing cylinder 32 as the center.

[0037] The damping unit 33 comprises a threaded rod 331 mounted on the side of the connecting disc 311, and a damping spring 332 arranged on the outer side of the threaded rod 331. The outer surface of the fixing cylinder 32 is provided with a mounting seat 333. The threaded rod 331 is arranged in the inner side of the mounting seat 333. A locking sleeve 334 is threadedly connected to the outer side of the threaded rod 331. The length of the damping spring 332 can be adjusted through the locking sleeve 334, so as to adjust the elastic potential energy, thereby adapting to different impact force requirements.

[0038] The limiting unit 43 comprises a plurality of groups of limiting units 43 arranged in a circumferential array with the center point of the connecting seat 42 as the center.

[0039] The limiting unit 43 comprises a receiving groove arranged on the side of the connecting seat 42, one end of an extrusion piece 431 mounted on the side wall of the receiving groove, and one end of a limiting block 432 mounted on the other end of the extrusion piece 431. The side wall of the fixing seat 41 is provided with a limiting groove 433 matching the other end of the limiting block 432 in size.

[0040] The locking unit 44 comprises a locking ring 441 threadedly connected to the outer side of the connecting seat 42, a positioning hole arranged on the top surface of the locking ring 441, a locking rod 442 arranged in the positioning hole, and an elastic piece 443 arranged on the bottom of the locking rod 442. Preferably, the elastic piece 443 is a spring.

[0041] The utility model discloses when using, when the protection pole 2 needs to be replaced when damaging, first through the use tool to bolt is dismantled, thereby will connecting disc 311 with protection pole 2 separate, thereby will protection pole 2 dismantle, and when the connecting piece 3 appears damage, through pressing locking rod 442 makes it shrink to the inside of mounting panel 1, make locking rod 442 with positioning hole separate, then through the rotation locking ring 441 makes it with mounting panel 1 separate, then through pressing limit block 432 makes it shrink to the inside of storage groove, thereby make limit block 432 with limit slot 433 separate, thereby remove the spacing of connecting seat 42, thereby will connecting piece 3 whole dismantle, convenient to the protection pole 2 with connecting piece 3 replace, save time and effort.

[0042] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation using the utility model specification and attached drawing contents, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A rear protection pole structure of a semitrailer, comprising a mounting plate (1) and a protection pole (2) arranged at the side of the mounting plate (1), characterized in that: The connecting piece (3) is arranged between the mounting plate (1) and the guard bar (2), and a mounting assembly (4) is arranged between the connecting piece (3) and the mounting plate (1); The connecting piece (3) comprises one end of an extension rod (31) arranged on the inner side of the guard bar (2), a fixing cylinder (32) arranged on the other end of the extension rod (31), and a damping unit (33) arranged on the outer side of the fixing cylinder (32); The mounting assembly (4) comprises a fixing seat (41) arranged on the side of the mounting plate (1), a connecting seat (42) arranged in the fixing seat (41), and a limiting unit (43) arranged between the connecting seat (42) and the fixing seat (41), wherein the connecting seat (42) is integrally formed with the fixing cylinder (32), and the outer side of the connecting seat (42) is provided with a locking unit (44).

2. A rear underrun protection structure for a semi-trailer according to claim 1, characterized in that: The outer side of the guard bar (2) is provided with a groove (21), and the inner side of the groove (21) is provided with a reinforcing plate (22).

3. A rear impact protection beam structure for a semi-trailer according to claim 2, characterized in that: The number of the connecting pieces (3) is two, and the two connecting pieces (3) are oppositely arranged between the mounting plate (1) and the guard bar (2); The connecting piece (3) further comprises a buffer spring (34) arranged between the fixing cylinder (32) and the extension rod (31).

4. A rear impact protection beam structure for a semi-trailer according to claim 3, characterized in that: One end of the extension rod (31) is provided with a connecting disc (311), and the connecting disc (311) is fixedly connected to the inner side of the guard bar (2) through a bolt.

5. A rear underrun protection structure for a semi-trailer according to claim 4, characterized in that: The number of the damping units (33) is multiple, and the multiple damping units (33) are distributed in a circular array with the center point of the fixing cylinder (32) as the center; The damping unit (33) comprises a threaded rod (331) arranged on the side of the connecting disc (311), a damping spring (332) arranged on the outer side of the threaded rod (331), a mounting seat (333) arranged on the outer surface of the fixing cylinder (32), and a locking sleeve (334) threadedly connected to the outer side of the threaded rod (331).

6. A rear underrun protection structure for a semi-trailer according to claim 5, characterized in that: The number of the limiting units (43) is multiple, and the multiple limiting units (43) are distributed in a circular array with the center point of the connecting seat (42) as the center; The limiting unit (43) comprises a receiving groove arranged on the side of the connecting seat (42), one end of an extrusion piece (431) arranged on the side wall of the receiving groove, and one end of a limiting block (432) arranged on the other end of the extrusion piece (431), wherein the side wall of the fixing seat (41) is provided with a limiting groove (433) matched in size with the other end of the limiting block (432).

7. A rear impact beam structure for a semi-trailer as claimed in claim 6, characterized in that: The locking unit (44) comprises a locking ring (441) threadedly connected to the outer side of the connecting seat (42), a positioning hole arranged on the top surface of the locking ring (441), a locking rod (442) arranged in the positioning hole, and an elastic piece (443) arranged on the bottom of the locking rod (442).

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