Buffer type trailer rod for road trailer

Abstract

The utility model discloses a buffer type tow bar for a road trailer, and relates to the field of tow bars, the buffer type tow bar comprises a first main bar and a second main bar arranged on the right side of the first main bar, draw bars are arranged in the first main bar and the second main bar, and fixing buckles are rotatably installed on the outer sides of the draw bars. A disc is fixedly mounted on the inner side of the traction rod, a fixing plate is fixedly mounted on the inner wall of the first main rod and the inner wall of the second main rod, an anti-skid attaching mechanism is arranged on the inner side of the fixing plate, and a positioning rod is arranged on the anti-skid attaching mechanism. According to the buffering type trailer rod for the road trailer, during traction, traction rods arranged in the first main rod and the second main rod pull a disc when being dragged, limiting blocks on the outer side of the disc slide along limiting grooves and move outwards to extrude buffering springs, the buffering springs conduct buffering through the elastic force of the buffering springs, and the buffering effect is achieved; damage to the trailer rod caused by overlarge traction force is avoided, and the influence of the traction force on the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to trailer pole technical field, concretely is a kind of buffer formula trailer pole for road trailer. BACKGROUND

[0002] Buffer formula trailer pole is the equipment specially used for road trailer, mainly for connecting trailer and tractor (usually car or truck), to provide better stability and comfort in the process of towing. Its main function is to absorb the impact and vibration generated in the process of traction by using buffer device (such as spring or hydraulic system), so as to reduce the damage to trailer and tractor;

[0003] In prior art, trailer pole can connect between front and rear vehicles, with the traction of front vehicle, rear vehicle can be pulled to move, but when pulling rear vehicle through trailer pole, if the weight of rear vehicle is heavy, it is easy to cause the burden of trailer pole to be large, easy to damage, not durable;

[0004] In order to overcome the above shortcomings, the prior art (publication number CN107264197A) discloses a buffer formula hard traction trailer pole, which eliminates the connection gap between the traction ring and the traction pole of the prior art. The structure design of the connecting rib on the buffer sleeve facilitates the connection of the bolt and the buffer rod. The buffer structure design of the two buffer springs and the buffer sleeve and the buffer rod eliminates the backward pulling force and the forward pushing force of the towed vehicle on the tractor. The buffer sleeve and the buffer rod can be adjusted by 360 degrees, and also have the effect of preventing the towed vehicle from colliding with the tractor, so as to obtain the beneficial effects of eliminating hidden dangers and safe traction.

[0005] Although the prior art can overcome the above-mentioned shortcomings, there are still other problems in its operation process, such as: if trailer pole is used, since the length of trailer pole is long, it is not conducive to the storage of the device before and after use, and it is not convenient to carry the device. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a buffer formula trailer pole for road trailer to solve the problem of inconvenient storage and carrying of the device before and after use due to the long length of trailer pole in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a buffer formula trailer pole for road trailer, comprising a first main rod and a second main rod arranged on the right side of the first main rod, and the inside of the first main rod and the second main rod is provided with a traction rod, and the outside of the traction rod is rotatably installed with a fixed buckle, and the inside of the traction rod is fixedly installed with a disc;

[0008] The inner wall of the first main rod and the second main rod is fixedly provided with a fixed plate, the inner side of the fixed plate is provided with an anti-skid fitting mechanism, the anti-skid fitting mechanism is provided with a positioning rod, and the positioning rod is fixedly installed on the inner side of the fixed plate;

[0009] The upper end of the inner side of the first main rod and the second main rod is provided with a rotating shaft, the rotating shaft drives the rotation of the first main rod and the second main rod, the lower end of the first main rod and the second main rod is provided with a folding clamping mechanism, and the folding clamping mechanism is provided with a limiting plate, and the inner side of the limiting plate is fixedly installed on the outer side of the second main rod.

[0010] Further, the inner wall of the first main rod and the second main rod is provided with a limiting groove, and the outer side of the limiting block is fixedly installed on the outer side of the limiting groove.

[0011] Further, the surface of the traction rod is nested with a buffer spring, and the left and right sides of the buffer spring are fixedly installed between the first main rod and the disc.

[0012] Further, the surface of the positioning rod is provided with a movable block, the lower end of the movable block is rotatably provided with a rotating rod, and the lower end of the rotating rod is rotatably provided with an arc-shaped pressing block, and the lower end position of the arc-shaped pressing block corresponds to the outer side of the traction rod.

[0013] Further, the surface of the positioning rod is nested with a reset spring, and the left and right sides of the reset spring are arranged between the movable block and the fixed plate, the inner side of the first main rod is fixedly provided with a damping rod, the inner side of the damping rod is fixedly installed on the outer side of the arc-shaped pressing block, the inner wall of the arc-shaped pressing block is fixedly provided with an anti-skid pad, and the surface of the traction rod is fitted with the anti-skid pad.

[0014] Further, the left side of the limiting plate is fixedly provided with a clamping plate, and the inner side of the clamping plate is provided with a hole.

[0015] Further, the right end of the first main rod is fixedly provided with an opening plate, the clamping plate is embedded in the inner side of the opening plate, the clamping plate and the opening plate are connected through the mounting bolt, and the folding clamping mechanism is provided with three groups.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] 1. The buffer trailer rod for road trailer is provided, in use, the trailer rod is unfolded, the trailer rod is fixed between the trailer and the towed trailer through the fixed buckle, the fixed buckle and the traction rod can rotate, the rotation can avoid the twisting of the trailer rod, and the use effect of the device is guaranteed.

[0018] Further, when the first main rod and the second main rod are pulled, the pulling rod arranged inside the first main rod and the second main rod pulls the disc when being pulled, the limiting block outside the disc slides along the limiting groove and moves outward to extrude the buffer spring, the buffer spring is buffered through the elastic force of the buffer spring, the effect of buffering is realized, the damage of the trailer rod caused by the excessive pulling force is avoided, and the pulling force that the device can bear is improved.

[0019] 2. When the pulling rod is pulled, vibration deviation is prone to occur, the positioning rod inside the fixed plate is limited, at the moment, the surface movable block of the positioning rod is pushed inward along the positioning rod under the elastic pressure of the reset spring, the friction force of the pulling rod is increased through the anti-skid pad of the inner wall of the arc-shaped pressing block, the vibration of the buffer spring inside is avoided when the pulling rod is pulled, and the stability of pulling is further ensured.

[0020] Further, when the trailer rod is not used, the installation bolt is removed by rotating, the clamping plate on the left side of the limiting plate is taken out from the inside of the opening plate after the installation bolt is removed, at the moment, the first main rod and the second main rod can be folded along the rotation, storage and use are facilitated, damage is avoided, the use of the device is ensured, and folding for storage is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic view of a sectional structure of the utility model;

[0022] Figure 2 It is a schematic view of a sectional structure of the utility model;

[0023] Figure 3 It is a schematic view of a sectional structure of the utility model;

[0024] Figure 4 It is a schematic view of a sectional structure of the utility model; Figure 1 It is a schematic view of a sectional structure of the utility model;

[0025] Figure 5 It is a schematic view of a sectional structure of the utility model;

[0026] Figure 6 It is a schematic view of a sectional structure of the utility model;

[0027] Figure 7 It is a schematic view of a sectional structure of the utility model;

[0028] In the figure: 1, the first main rod; 2, the second main rod; 3, the traction rod; 4, the fixed buckle; 5, the disc; 6, the limiting block; 7, the limiting groove; 8, the buffer spring; 9, the fixed plate; 10, the positioning rod; 11, the movable block; 12, the rotating rod; 13, the arc-shaped pressing block; 14, the reset spring; 15, the damping rod; 16, the non-slip pad; 17, the rotating shaft; 18, the limiting plate; 19, the clamping plate; 20, the open plate; 21, the mounting bolt. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] Embodiment one:

[0031] As shown in the technical solutions shown in the drawings, Figure 1 and Figure 6 In order to solve the problem that the trailer rod is easily damaged by pulling, the technical solutions disclosed are: a first main rod 1 and a second main rod 2 arranged on the right side of the first main rod 1, the interiors of the first main rod 1 and the second main rod 2 are provided with a traction rod 3, the outer side of the traction rod 3 is rotatably installed with a fixed buckle 4, the inner side of the traction rod 3 is fixedly installed with a disc 5, the inner walls of the first main rod 1 and the second main rod 2 are provided with a limiting groove 7, the outer side of the disc 5 is fixedly installed with a limiting block 6, the outer side of the limiting block 6 is connected with the limiting groove 7 in a sliding manner, the surface of the traction rod 3 is nested with a buffer spring 8, and the left and right sides of the buffer spring 8 are fixedly installed between the first main rod 1 and the disc 5.

[0032] In the embodiment, the buffer trailer rod for road trailer is arranged, when in use, the trailer rod is unfolded, the trailer rod is fixed between the trailer and the towed trailer through the fixed buckle 4, the fixed buckle 4 and the traction rod 3 can rotate, the rotation can avoid the twisting of the trailer rod, the use effect of the device is ensured, when towing, the traction rod 3 arranged in the interiors of the first main rod 1 and the second main rod 2 pulls the disc 5 when being towed, the limiting block 6 on the outer side of the disc 5 slides along the limiting groove 7 and moves outward to press the buffer spring 8, the buffer spring 8 buffers through the elastic force of itself, the effect of buffering is realized, the damage of the trailer rod caused by the excessive towing force is avoided, and the towing force that the device can bear is improved.

[0033] Embodiment two:

[0034] As shown in the technical solutions shown in the drawings, Figure 1 , Figure 3 , Figure 4 andFigure 5 The technical scheme shown is to solve the problem of easy deviation and damage of the trailer rod. The inner wall of the first main rod 1 and the second main rod 2 is fixedly installed with a fixed plate 9, the inner side of the fixed plate 9 is provided with an anti-skid fitting mechanism, the anti-skid fitting mechanism is provided with a positioning rod 10, the positioning rod 10 is fixedly installed on the inner side of the fixed plate 9, the surface of the positioning rod 10 is installed with a movable block 11, the lower end of the movable block 11 is rotatably installed with a rotating rod 12, the lower end of the rotating rod 12 is rotatably installed with an arc-shaped pressing block 13, the lower end position of the arc-shaped pressing block 13 corresponds to the outer side of the towing rod 3, the surface of the positioning rod 10 is nested with a return spring 14, the left and right sides of the return spring 14 are arranged between the movable block 11 and the fixed plate 9, the inner side of the first main rod 1 is fixedly installed with a damping rod 15, the inner side of the damping rod 15 is fixedly installed on the outer side of the arc-shaped pressing block 13, the inner wall of the arc-shaped pressing block 13 is fixedly installed with an anti-skid pad 16, and the inner wall of the anti-skid pad 16 is fitted with the surface of the towing rod 3.

[0035] In the embodiment, when the towing rod 3 is towed, it is easy to vibrate and deviate. The positioning rod 10 on the inner side of the fixed plate 9 limits the vibration and deviation. At this time, the surface of the positioning rod 10 is pushed inward by the movable block 11 under the elastic pressure of the return spring 14, the movable block 11 slides along the positioning rod 10, the movable block 11 drives the rotating rods 12 at the upper and lower ends to push the arc-shaped pressing block 13 to press the towing rod 3, and at the same time, the damping rod 15 releases the pressure of the reciprocating vibration of the return spring 14, avoiding the reciprocating vibration of the return spring 14. In this way, the towing rod 3 can be limited, avoiding the vibration of the device to damage the first main rod 1 and the second main rod 2 on the outer side, ensuring the stability of the device and the trailer, and increasing the friction of the towing rod 3 through the anti-skid pad 16 on the inner wall of the arc-shaped pressing block 13, avoiding the vibration of the inner side buffer spring 8 when the towing rod 3 is stretched, and further ensuring the stability of the towing.

[0036] Embodiment three:

[0037] As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 The technical scheme shown is to solve the problem of inconvenient carrying of the trailer rod. The inner side upper end of the first main rod 1 and the second main rod 2 is provided with a rotating shaft 17, the rotating shaft 17 drives the rotation of the first main rod 1 and the second main rod 2, the lower end of the first main rod 1 and the second main rod 2 is provided with a folding clamping mechanism, the folding clamping mechanism is provided with a limiting plate 18, the inner side of the limiting plate 18 is fixedly installed on the outer side of the second main rod 2, the left side of the limiting plate 18 is fixedly installed with a clamping plate 19, the inside of the clamping plate 19 is provided with a hole, the right end outer side of the first main rod 1 is fixedly installed with an opening plate 20, the clamping plate 19 is embedded in the inside of the opening plate 20, and the clamping plate 19 and the opening plate 20 are connected through the installation of the threaded bolt 21, and the folding clamping mechanism is provided with three groups.

[0038] In the embodiment, when the trailer rod is not used, the mounting bolt 21 is removed by rotating, after the mounting bolt 21 is removed, the clamping plate 19 on the left side of the limiting plate 18 can be taken out from the inside of the opening plate 20, at this time, the first main rod 1 and the second main rod 2 can be folded along the rotation, which is convenient for storage and use, on the contrary, when used, the clamping plate 19 on the inside of the limiting plate 18 is embedded into the inside of the opening plate 20, the first main rod 1 and the second main rod 2 can be unfolded and fixed by rotating and mounting the mounting bolt 21, the setting of the three sets of clamping mechanisms can improve the stability of the fixing, avoid easy damage, ensure the use of the device, and also can be folded for storage.

[0039] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A buffer type trailer rod for road trailers, comprising a first main rod (1) and a second main rod (2) arranged on the right side of the first main rod (1), the interiors of the first main rod (1) and the second main rod (2) are provided with a traction rod (3), the outer side of the traction rod (3) is rotatably installed with a fixed buckle (4), and the inner side of the traction rod (3) is fixedly installed with a disc (5). characterized in that The inner walls of the first main rod (1) and the second main rod (2) are fixedly installed with a fixed plate (9), the inner side of the fixed plate (9) is provided with an anti-skid fitting mechanism, the anti-skid fitting mechanism is provided with a positioning rod (10), and the positioning rod (10) is fixedly installed on the inner side of the fixed plate (9). The upper ends of the inner sides of the first main rod (1) and the second main rod (2) are provided with a rotating shaft (17), the rotating shaft (17) drives the first main rod (1) and the second main rod (2) to rotate, the lower ends of the first main rod (1) and the second main rod (2) are provided with a folding clamping mechanism, and the folding clamping mechanism is provided with a limiting plate (18), the inner side of the limiting plate (18) is fixedly installed on the outer side of the second main rod (2).

2. A cushioned tow bar for a road trailer as claimed in claim 1, wherein: The inner walls of the first main rod (1) and the second main rod (2) are both provided with a limiting groove (7), the outer side of the disc (5) is fixedly installed with a limiting block (6), and the outer side of the limiting block (6) is connected with the limiting groove (7) in a sliding manner.

3. A cushioned tow bar for a road trailer as claimed in claim 2, wherein: The surface of the traction rod (3) is nested with a buffer spring (8), and the left and right sides of the buffer spring (8) are fixedly installed between the first main rod (1) and the disc (5).

4. A cushioned tow bar for a road trailer as claimed in claim 1, wherein: The surface of the positioning rod (10) is installed with a movable block (11), the lower end of the movable block (11) is rotatably installed with a rotating rod (12), the lower end of the rotating rod (12) is rotatably installed with an arc-shaped pressing block (13), and the lower end position of the arc-shaped pressing block (13) corresponds to the outer side of the traction rod (3).

5. A cushioned tow bar for a road trailer as claimed in claim 4, wherein: The surface of the positioning rod (10) is nested with a return spring (14), the left and right sides of the return spring (14) are arranged between the movable block (11) and the fixed plate (9), the inner side of the first main rod (1) is fixedly installed with a damping rod (15), the inner side of the damping rod (15) is fixedly installed on the outer side of the arc-shaped pressing block (13), the inner wall of the arc-shaped pressing block (13) is fixedly installed with an anti-skid pad (16), and the inner wall of the anti-skid pad (16) is fitted with the surface of the traction rod (3).

6. A cushioned tow bar for a road trailer as claimed in claim 1, characterised in that: The left side of the limiting plate (18) is fixedly installed with a clamping plate (19), and the inner part of the clamping plate (19) is provided with a hole.

7. A cushioned tow bar for a road trailer as claimed in claim 6, wherein: The outer side of the right end of the first main rod (1) is fixedly installed with an opening plate (20), the clamping plate (19) is embedded in the inner part of the opening plate (20), the clamping plate (19) and the opening plate (20) are connected in a threaded manner through a mounting bolt (21), and the folding clamping mechanism is provided with three groups.

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