Traction type trailer

Abstract

The utility model discloses a traction type trailer, which comprises a front door plate, a rear door plate, a box bottom plate and a pair of box side plates fixed on two sides of the box bottom plate, and is characterized in that bottom plug bush profiles are arranged on two sides of the box bottom plate, end seat plates extend from the end parts of the bottom plug bush profiles, and bottom pin shafts are fixedly inserted on the end seat plates; the lower ends of the door plate profiles on the two sides of the rear door plate are provided with inserting parts used for being inserted into the bottom inserting and sleeving profiles, and hook-shaped guide grooves used for being matched with the bottom pin shafts are formed in the inserting parts. The hook-shaped guide groove comprises a vertical guide groove, and the upper end of the vertical guide groove extends to form a hook part guide groove close to one side of the box bottom plate. The carriage is simple and reasonable in structure, the bearing space of the carriage in the axial direction can be expanded, long objects can be transported and borne more safely, and the overall assembling and manufacturing cost is relatively low.

Description

Technical Field

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

[0002] A trailer is a tool used for short-distance transit, construction sites, warehouse transfer, machinery, logistics, offline and other operations, transportation, loading and unloading. With the promotion of household trailers, trailers can be towed behind household cars for household consignment. Conventional trailers usually include a frame and side panels, door panels and other components arranged around the frame. In order to facilitate unloading, the side panels and door panels can usually be installed around the frame in a rotating manner. By rotating the side panels or door panels and making them hang down, unloading can be facilitated.

[0003] For example, the utility model patent with authorization announcement number CN220410751U discloses a trailer, including a trailer frame, a traction frame, a first wheel, a second wheel and a vehicle box assembly; the trailer frame is connected to the traction frame, the trailer frame is equipped with a first wheel, and the traction frame is equipped with a second wheel; the vehicle box assembly includes a front side baffle, a left side baffle, a right side baffle and a rear side baffle, and the front side baffle, the left side baffle, the right side baffle and the rear side baffle are all detachably connected to the trailer frame. The utility model can reduce the maintenance cost of the trailer.

[0004] However, the horizontal cargo space of the trailer with the above structure is usually determined by the size of the frame bottom plate, and the horizontal space cannot be expanded, and it is often impossible to achieve safe transportation support for some long objects. Utility Model Content

[0005] The purpose of the utility model is to provide a towing trailer to solve the problems raised in the above background technology.

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

[0007] A tractor-type trailer, comprising a front door panel, a rear door panel, a box bottom panel and a pair of box side panels fixed on both sides of the box bottom panel, characterized in that bottom plug-in profiles are arranged on both sides of the box bottom panel, end seats extend from the ends of the bottom plug-in profiles, and bottom pins are inserted and fixed on the end seats;

[0008] The lower ends of the door panel profiles on both sides of the rear door panel are provided with insertion parts for inserting into the bottom sleeve profiles, and the insertion parts are provided with hook-shaped guide grooves for cooperating with the bottom pin shafts.

[0009] Preferably, the hook-shaped guide groove comprises a vertical guide groove, and a hook guide groove is extended from the upper end of the vertical guide groove toward one side of the box bottom plate.

[0010] Preferably, the lower ends of the door panel profiles on both sides of the front door panel also have an insertion portion for inserting into the bottom sleeve profile, and the insertion portion is provided with a hook-shaped guide groove for cooperating with the bottom pin shaft.

[0011] Preferably, it also includes a locking mechanism for locking the front door panel and / or the rear door panel, the locking mechanism includes a locking seat plate, the locking seat plate is fixedly mounted on the side wall of the side profile of the side panel of the box, the upper end of the locking seat plate has a notch groove, and a hanging pin shaft for cooperating with the notch groove is fixedly mounted on the side wall of the door panel profile.

[0012] Preferably, a locking pin is movably inserted on the locking seat, and an insertion hole for cooperating with the locking pin is opened on the side wall of the door panel profile.

[0013] Preferably, a hook is provided at the end cap of the locking pin, and the other end of the hook has a ring portion for being sleeved on the other end of the locking pin.

[0014] Preferably, a sleeve seat is fixedly mounted on the insertion portion at the lower end of the door panel profile, and a hook-shaped guide groove is also provided at a corresponding position of the sleeve seat.

[0015] Preferably, a main shaft is fixedly mounted on the lower end of the bottom sleeve profile of the box bottom plate through a shock-absorbing spring sheet, wheels are rotatably mounted on both ends of the main shaft, and a pull frame is also fixedly mounted on the lower end of the box bottom plate.

[0016] Compared with the prior art, the utility model has the following beneficial effects: when in use, the bottom pin shaft can enter the hook guide groove, and the insertion part of the door panel profile contacts the top inner wall of the bottom insertion profile, so that the rear door panel can be kept in a relatively stable horizontal state, thereby expanding the supporting space of the vehicle box in the axial direction, and can more safely transport and support long objects;

[0017] The locking mechanism of the utility model has a simple and reasonable structure, and its assembly and manufacturing cost is relatively low while effectively ensuring the secure locking of the front door panel and the rear door panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a tractor trailer from a first viewing angle;

[0019] Figure 2 is a schematic diagram of the three-dimensional structure of a tractor-trailer from a second viewing angle;

[0020] Figure 3 A schematic diagram of the three-dimensional structure of a tractor trailer from a third viewing angle;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of a rear door panel in a tractor-type trailer;

[0022] Figure 5 A schematic diagram of a tractor-trailer in a state where the rear door panel is tilted;

[0023] Figure 6 The figure is a schematic diagram of a tractor trailer when the rear door panel is horizontal.

[0024] In the figure: 1-front door panel, 11-door panel profile, 12-hanging pin, 13-jacket seat, 14-insertion hole, 15-hook guide groove, 16-vertical guide groove, 2-rear door panel, 3-box bottom plate, 31-bottom plug sleeve profile, 32-end seat plate, 33-bottom pin, 4-box side plate, 41-side profile, 5-locking seat plate, 51-locking pin, 52-hook, 6-pull frame, 7-shock-absorbing spring leaf, 8-spindle, 9-wheel. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figures 1 to 6 The utility model provides a technical solution: a tractor trailer, comprising a front door panel 1, a rear door panel 2, a box bottom panel 3 and a pair of box side panels 4 fixed on both sides of the box bottom panel 3, the lower end of the bottom plug-in profile 31 of the box bottom panel 3 is fixedly installed with a main shaft 8 through a shock-absorbing spring 7, and wheels 9 are rotatably installed at both ends of the main shaft 8. A pull frame 6 is also fixedly installed at the lower end of the box bottom panel 3, and the bottom plug-in profile 31 is provided on both sides of the box bottom panel 3, and the end of the bottom plug-in profile 31 extends with an end seat plate 32, and a bottom pin 33 is inserted and fixed on the end seat plate 32; the lower ends of the door panel profiles 11 on both sides of the rear door panel 2 have an insertion part for inserting into the bottom plug-in profile 31, and the insertion part is provided with a hook-shaped guide groove for cooperating with the bottom pin 33. In this embodiment, the rear door panel 2 can be specifically composed of a U-shaped profile and a door panel fixedly connected in the U-shaped profile, and the door panel profile 11 is the two ends of the U-shaped profile. The hook-shaped guide groove includes a vertical guide groove 16 , and a hook guide groove 15 extending from the upper end of the vertical guide groove 16 toward one side of the box bottom plate 3 .

[0027] The working principle of the utility model is as follows: when it is necessary to expand the axial space of the vehicle body, the rear door panel 2 can be rotated to rotate around the bottom pin shaft 33. After it is rotated to a nearly horizontal state, the rear door panel 2 is pushed forward, so that the insertion portion at the lower end of the door panel profile 11 can be inserted into the bottom plug-in profile 31. When the hook guide groove 15 reaches the position of the bottom pin shaft 33, the bottom pin shaft 33 enters the hook guide groove 15, and the insertion portion of the door panel profile 11 contacts the top inner wall of the bottom plug-in profile 31, so that the rear door panel 2 can be kept in a relatively stable horizontal state, thereby expanding the axial supporting space of the vehicle body, and longer objects can be transported and supported more safely.

[0028] As a further solution, in order to further expand the axial space of the vehicle box, the lower ends of the door panel profiles 11 on both sides of the front door panel 1 also have an insertion portion for inserting into the bottom plug profile 31, and the insertion portion is provided with a hook-shaped guide groove for cooperating with the bottom pin shaft 33. With the above structure, the front door panel 1 can also expand the axial space of the vehicle box in the above manner.

[0029] As a further specific scheme, in order to facilitate locking of the front door panel 1 and / or the rear door panel 2 after being erected, the present embodiment also includes a locking mechanism for locking the front door panel 1 and / or the rear door panel 2, wherein the locking mechanism includes a locking seat plate 5, which is fixedly mounted on the side wall of the side profile 41 of the box side panel 4, and the upper end of the locking seat plate 5 has a notch groove, and a hanging pin 12 for cooperating with the notch groove is fixedly mounted on the side wall of the door panel profile 11.

[0030] When locking, the front door panel 1 or the rear door panel 2 can be rotated to stand upright, and the hanging pin 12 is hung in the notch groove at the upper end of the locking seat plate 5, so that the front door panel 1 or the rear door panel 2 can be initially limited.

[0031] In order to further improve the locking stability of the front door panel 1 or the rear door panel 2, a locking pin 51 is movably inserted on the locking seat 5, and an insertion hole 14 for cooperating with the locking pin 51 is opened on the side wall of the door panel profile 11. When the front door panel 1 or the rear door panel 2 is initially limited, the locking pin 51 is inserted into the insertion hole 14 of the door panel profile 11, and the front door panel 1 or the rear door panel 2 can be reliably locked.

[0032] In order to prevent the locking pin 51 from being shaken out of the insertion hole 14 by vibration during the movement of the trailer, a hook 52 is provided at the end cap of the locking pin 51. The hook 52 can be made of metal wire, and the other end of the hook 52 has a ring portion for being fitted on the other end of the locking pin 51. After the locking pin 51 is fully inserted into the insertion hole 14 of the door panel profile 11, the hook 52 is bent and its ring portion is fitted on the other end of the locking pin 51, so as to prevent the locking pin 51 from being separated from the insertion hole 14 due to vibration.

[0033] The locking mechanism of the utility model has a simple and reasonable structure, and its assembly and manufacturing cost is relatively low while effectively ensuring the secure locking of the front door panel 1 and the rear door panel 2.

[0034] In order to prevent the hook-shaped guide groove of the door panel profile 11 from excessive deformation due to long-term use, a sleeve seat 13 is also fixed on the insertion part at the lower end of the door panel profile 11, and a hook-shaped guide groove is also opened at the corresponding position of the sleeve seat 13. The sleeve seat 13 further improves the support strength of the insertion part, thereby maintaining the shape of the hook-shaped guide groove for a long time.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A tractor trailer, comprising a front door panel (1), a rear door panel (2), a box bottom panel (3), and a pair of box side panels (4) fixed on both sides of the box bottom panel (3), characterized in that: Bottom sleeve profiles (31) are arranged on both sides of the box bottom plate (3), end portions of the bottom sleeve profiles (31) are extended with end seat plates (32), and bottom pin shafts (33) are inserted and fixed on the end seat plates (32); The lower ends of the door panel profiles (11) on both sides of the rear door panel (2) have insertion portions for inserting into the bottom sleeve profile (31), and the insertion portions are provided with hook-shaped guide grooves for cooperating with the bottom pin shaft (33).

2. A tractor trailer according to claim 1, characterized in that: The hook-shaped guide groove comprises a vertical guide groove (16), and a hook guide groove (15) extending from the upper end of the vertical guide groove (16) is close to one side of the box bottom plate (3).

3. A tractor trailer according to claim 2, characterized in that: The lower ends of the door panel profiles (11) on both sides of the front door panel (1) also have an insertion portion for inserting into the bottom sleeve profile (31), and the insertion portion is provided with a hook-shaped guide groove for cooperating with the bottom pin shaft (33).

4. A tractor trailer according to claim 3, characterized in that: The invention also comprises a locking mechanism for locking the front door panel (1) and / or the rear door panel (2), wherein the locking mechanism comprises a locking seat plate (5), the locking seat plate (5) being fixedly mounted on the side wall of the side profile (41) of the box side panel (4), the upper end of the locking seat plate (5) having a notch groove, and a hanging pin shaft (12) for cooperating with the notch groove being fixedly mounted on the side wall of the door panel profile (11).

5. A tractor trailer according to claim 4, characterized in that: A locking pin (51) is also movably inserted on the locking seat plate (5), and an insertion hole (14) for cooperating with the locking pin (51) is provided on the side wall of the door panel profile (11).

6. A tractor trailer according to claim 5, characterized in that: A hook (52) is inserted through the end cap of the locking latch (51), and the other end of the hook (52) has a ring portion for being sleeved on the other end of the locking latch (51).

7. A tractor trailer according to any one of claims 1 to 6, characterized in that: An outer sleeve seat (13) is also fixedly mounted on the insertion portion at the lower end of the door panel profile (11), and a hook-shaped guide groove is also provided at a corresponding position of the outer sleeve seat (13).

8. A tractor trailer according to claim 7, characterized in that: A main shaft (8) is fixedly mounted on the lower end of the bottom sleeve profile (31) of the box bottom plate (3) via a shock-absorbing spring sheet (7), wheels (9) are rotatably mounted on both ends of the main shaft (8), and a pull frame (6) is also fixedly mounted on the lower end of the box bottom plate (3).

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