Trailer rear axle capable of moving forwards and backwards

Abstract

The utility model discloses a trailer rear axle capable of moving back and forth, which comprises a suspension part and a frame part, a movable device is arranged between the suspension part and the frame part, the movable device comprises a frame, the frame is fixedly connected with the suspension part, the frame is connected with the frame part in a sliding mode, and the frame is connected with the frame part in a sliding mode. The frame is rotatably connected with a rotating shaft, a driving mechanism is arranged between the rotating shaft and the frame, the frame part is provided with a plurality of uniformly distributed limiting holes, and a limiting mechanism is arranged between the rotating shaft and the frame part. According to the trailer rear axle capable of moving back and forth, the hanging part can move relative to the workshop part through the arranged movable device, so that the axle distance between a tractor and the hanging part is changed, and when a trailer turns at a position with a small site, the hanging part can be close to the tractor, the axle distance between the tractor and the hanging part is reduced, and the trailer is convenient to move. Turning radius is reduced, and turning of the trailer is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to rear axle technical field, especially relate to a trailer rear axle of front -to -back movement. BACKGROUND

[0002] The semi-trailer is the axle that is placed in the center of gravity of vehicle (when the vehicle is even loaded), and is equipped with the coupling device that can deliver horizontal and vertical force to the tractor. It is generally three axle semi-trailer, and its categories divide into eleven meters warehouse fence semi-trailer, thirteen meters warehouse fence, low flatbed semi-trailer and many kinds. It is a kind of heavy transport vehicle connected by traction pin and semi-trailer head. The traditional trailer rear axle, as shown in figure, includes suspension part and frame part, suspension part includes tire, suspension and axle, suspension part and frame part fixed connection, frame part is connected with tractor head, suspension part and frame part fixed connection after tractor head and the axle of suspension part is fixed, cannot change, the turning radius is relatively large, when the turning site is small, it is inconvenient for trailer to turn. Figure 5 The utility model relates to rear axle technical field, especially relate to a trailer rear axle of front -to -back movement. UTILITY MODEL CONTENTS

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a trailer rear axle of front -to -back movement, which aims to solve the problems of the traditional trailer rear axle, the fixed connection of the suspension part and the frame part, the connection of the frame part and the tractor head, the fixed connection of the suspension part and the frame part, the fixed axle of the tractor head and the suspension part, the large turning radius, the inconvenience of the trailer turning when the turning site is small and the like.

[0004] In order to achieve the above-mentioned utility model purposes, the utility model adopts the technical scheme that:

[0005] A trailer rear axle of front -to -back movement includes suspension part and frame part, movable device is arranged between the suspension part and the frame part, the movable device includes frame, the frame is fixedly connected with the suspension part, the frame is slidingly connected with the frame part, rotating shaft is rotatably connected to the frame, driving mechanism is arranged between the rotating shaft and the frame, a plurality of uniformly distributed limiting holes are arranged on the frame part, and limiting mechanism is arranged between the rotating shaft and the frame part.

[0006] Further, the driving mechanism includes first hinged seat fixedly connected with the frame, the first hinged seat is hingedly connected with air cylinder, first connecting plate is fixedly connected to the rotating shaft, second hinged seat is fixedly connected to the piston rod of the air cylinder, and the second hinged seat is hingedly connected with the first connecting plate.

[0007] Further, the limiting mechanism comprises a second connecting plate fixedly connected with the rotating shaft, both ends of the second connecting plate are hingedly connected with connecting rods, and one end of the connecting rod away from the second connecting plate is hingedly connected with a limiting pin, and the limiting pin is slidably connected with the frame.

[0008] Further, the limiting pin is matched with the shape of the limiting hole, and the limiting pin can be inserted into the limiting hole.

[0009] The utility model discloses beneficial effects are:

[0010] The utility model discloses a trailer rear axle of movable, through setting up movable device, the suspension part can be relative to the workshop part movement, thereby change the axle distance between tractor and suspension part, when the trailer turns in the position of smaller site, can make the suspension part close to tractor, reduce the axle distance between tractor and suspension part, reduce the turning radius, and it is convenient for trailer to turn. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the explosion structure schematic diagram of the utility model's movable trailer rear axle;

[0012] Figure 2 It is the suspension part and movable device structure schematic diagram of the utility model;

[0013] Figure 3 It is the movable device structure schematic diagram of the utility model;

[0014] Figure 4 It is the Figure 3 It is the enlarged structure schematic diagram of A place in middle;

[0015] Figure 5 It is the traditional trailer rear axle structure schematic diagram of the utility model.

[0016] Corresponding table of reference numerals:

[0017] 1, suspension part;2, frame part;3, movable device;4, frame;5, rotating shaft;6, limiting hole;7, drive mechanism;8, limiting mechanism;9, first hinged seat;10, air cylinder;11, first connecting plate;12, second hinged seat;13, second connecting plate;14, connecting rod;15, limiting pin. DETAILED DESCRIPTION

[0018] The specific implementation of the utility model will be further explained in combination with the drawings.

[0019] It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular component.

[0020] In order to make the content of the utility model more easily understood clearly, the technical solutions in the utility model embodiments will be clearly and completely described below in combination with the drawings in the utility model embodiments.

[0021] As shown in the drawings, Figures 1 to 4 A rear axle of a trailer which is movable front and back, comprising a suspension part 1 and a frame part 2, the suspension part 1 and the frame part 2 are prior art, which will not be described here, a movable device 3 is arranged between the suspension part 1 and the frame part 2.

[0022] The movable device 3 comprises a frame 4, the frame 4 is fixedly connected with the suspension part 1, the frame 4 is slidingly connected with the frame part 2, and a rotating shaft 5 is rotatably connected to the frame 4.

[0023] A driving mechanism 7 is arranged between the rotating shaft 5 and the frame 4, the driving mechanism 7 comprises a first hinged seat 9 fixedly connected with the frame 4, a cylinder 10 is hinged to the first hinged seat 9, a first connecting plate 11 is fixedly connected to the rotating shaft 5, a second hinged seat 12 is fixedly connected to the piston rod of the cylinder 10, the second hinged seat 12 is hinged to the first connecting plate 11, the cylinder 10 can drive the first connecting plate 11 to rotate, and the first connecting plate 11 can drive the rotating shaft 5 to rotate.

[0024] A plurality of limiting holes 6 are arranged on the frame part 2, a limiting mechanism 8 is arranged between the rotating shaft 5 and the frame part 2, the limiting mechanism 8 comprises a second connecting plate 13 fixedly connected with the rotating shaft 5, connecting rods 14 are hinged to both ends of the second connecting plate 13, a limiting pin 15 is hinged to the end of the connecting rod 14 away from the second connecting plate 13, the limiting pin 15 is slidingly connected with the frame 4, the limiting pin 15 is matched with the shape of the limiting hole 6, and the limiting pin 15 can be inserted into the limiting hole 6.

[0025] When the vehicle is normally driven, the limiting pin 15 is inserted into the limiting hole 6, and the suspension part 1 and the frame part 2 are fixedly connected through the movable device 3.

[0026] When the semi-trailer needs to turn in a narrow place, the cylinder 10 drives the first connecting plate 11 to rotate, the first connecting plate 11 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the second connecting plate 13 to rotate, and the second connecting plate 13 drives the limiting pin 15 to disengage from the limiting hole 6 through the connecting rod 14.

[0027] At this time, the suspension part 1 can be moved, the wheelbase of the suspension part 1 and the towing vehicle is changed, the cylinder 10 drives the first connecting plate 11 to rotate, the first connecting plate 11 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the rotating second connecting plate 13 to rotate, the second connecting plate 13 drives the limiting pin 15 to insert into the limiting hole 6 through the connecting rod 14, the suspension part 1 and the frame part 2 are fixedly connected, the turning radius of the trailer is reduced, and the trailer is easier to turn.

[0028] The trailer turns again, the above process is repeated, the normal wheelbase is restored, and the trailer can normally travel.

[0029] The above only describes the preferred embodiment of the utility model patent and does not limit the utility model patent, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model patent should be included in the protection scope of the utility model patent.

Claims

1. A rear axle of a rearwardly movable trailer comprising a suspension part (1) and a frame part (2), characterized in that, The movable device (3) is arranged between the suspension part (1) and the frame part (2), the movable device (3) comprises a frame (4), the frame (4) is fixedly connected with the suspension part (1), the frame (4) is slidingly connected with the frame part (2), a rotating shaft (5) is rotatably connected on the frame (4), a driving mechanism (7) is arranged between the rotating shaft (5) and the frame (4), a plurality of limiting holes (6) are uniformly arranged on the frame part (2), and a limiting mechanism (8) is arranged between the rotating shaft (5) and the frame part (2).

2. A rear axle for a rearwardly movable trailer according to claim 1, characterized in that: The driving mechanism (7) comprises a first hinged seat (9) fixedly connected with the frame (4), a cylinder (10) is hinged on the first hinged seat (9), a first connecting plate (11) is fixedly connected on the rotating shaft (5), a second hinged seat (12) is fixedly connected on the piston rod of the cylinder (10), and the second hinged seat (12) is hinged with the first connecting plate (11).

3. A rear axle for a rearwardly movable trailer according to claim 2, characterized in that: The limiting mechanism (8) comprises a second connecting plate (13) fixedly connected with the rotating shaft (5), connecting rods (14) are hinged on both ends of the second connecting plate (13), limiting pins (15) are hinged on the ends, away from the second connecting plate (13), of the connecting rods (14), and the limiting pins (15) are slidingly connected with the frame (4).

4. A rear axle for a rearwardly movable trailer according to claim 3, characterized in that: The limiting pin (15) is matched with the shape of the limiting hole (6), and the limiting pin (15) can be inserted into the limiting hole (6).

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