Automatic folding trailer

Abstract

The utility model relates to an automatic folding trailer which comprises a supporting seat, a second trailer body and a first trailer body, the supporting seat is fixedly installed at the upper end of the head of the second trailer body and is of a rectangular structure, and the end, close to the head of the second trailer body, of the supporting seat is fixedly connected with a round pipe; a penetrating rotating shaft is fixedly connected into the circular pipe and penetrates through the circular pipe, the two ends of the rotating shaft extend out of the circular pipe, and the two ends of the rotating shaft are rotationally connected with the tail of a first trailer. Second circular pipes are arranged on the two sides of the tail of the first trailer and used for being rotationally connected with the two ends of the rotating shaft. A simple automatic mechanical structure is combined, an oil cylinder serves as power, the trailer is folded, the folding process is stable, and the occupied space is small after folding.

Description

TECHNICAL FIELD

[0001] The utility model belongs to trailer technical field, especially relate to a kind of automatic folding trailer. BACKGROUND

[0002] Trailer refers to the vehicle by car traction and itself without power drive device.The combination of one car (truck or tractor, fork truck) and one or more trailers.Loaded truck and tractor are the drive car section of the train, called main car.The slave car section that is pulled by main car is called trailer.The existing plate trailer can be folded to save space due to flat plate structure.

[0003] The folding structure of the current plate trailer is relatively complex, and the stability of the folding process is not good enough. INVENTION CONTENTS

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the purpose of the utility model is to provide an automatic folding trailer, comprising: a support seat, a second trailer, a first trailer, the support seat is fixedly installed on the upper end of the second trailer head, the support seat is rectangular in structure, the support seat is fixedly connected with a circular tube near one end of the second trailer head, the circular tube is fixedly connected with a through shaft inside, the shaft penetrates the circular tube and extends out of the circular tube at both ends, and the shaft is rotatably connected with the first trailer tail at both ends.

[0005] Preferably, the first trailer tail is provided with a second circular tube on both sides, and the second circular tube is used for rotatably connecting the both ends of the shaft.

[0006] Preferably, the trailer further comprises: an oil cylinder, the first trailer tail is hingedly connected with one end of the oil cylinder, and the other end of the oil cylinder is hingedly connected with the second trailer head.

[0007] Preferably, the trailer further comprises: a fixed pin, the fixed pin is fixedly connected between the both sides of the support seat and the second trailer, the fixed pin is vertically inserted between the support seat and the second trailer to prevent the support seat and the second trailer from moving horizontally.

[0008] Preferably, the first trailer tail is fixedly connected with an oil cylinder bracket, and one end of the oil cylinder is hingedly connected with the oil cylinder bracket.

[0009] Preferably, the oil cylinder is two, and the two oil cylinders are symmetrically distributed relative to the second trailer.

[0010] Preferably, the first pad block protrudes from the four legs of the second trailer.

[0011] Preferably, the second pad block protrudes from the four legs of the first trailer.

[0012] Compared with the prior art, the automatic folding trailer has the beneficial effects that:

[0013] The automatic folding trailer has the simple automatic mechanical structure, uses the oil cylinder as the power, folds the trailer, and has stable folding process and small occupied space after folding. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a whole structure diagram of the automatic folding trailer of the utility model;

[0015] Figure 2 is a local enlarged structure diagram of the automatic folding trailer of the utility model;

[0016] Figure 3 is a local enlarged structure diagram of the automatic folding trailer of the utility model when folding;

[0017] Figure 4 is a local structure diagram of the second trailer of the automatic folding trailer of the utility model;

[0018] Figure 5 is a structure diagram of the support seat and the first trailer of the automatic folding trailer of the utility model.

[0019] In the drawing, the fixed pin 1, the second trailer 2, the first trailer 3, the oil cylinder support 4, the oil cylinder 5, the first pad 6, the support seat 7, the circular pipe 8, the second circular pipe 9, and the second pad 10. DETAILED DESCRIPTION

[0020] The utility model will be further explained in detail in combination with the drawings and the specific embodiment.

[0021] As Figures 1-5 shown, the automatic folding trailer of the utility model comprises a support seat 7, a second trailer 2 and a first trailer 3, the support seat 7 is fixedly installed at the upper end of the head of the second trailer 2, the support seat 7 has a rectangular structure, the support seat 7 is fixedly connected with a circular pipe 8 at one end close to the head of the second trailer 2, a through shaft is fixedly connected inside the circular pipe 8, the through shaft penetrates through the circular pipe 8 and extends out of the circular pipe 8 at both ends, and the through shaft is rotatably connected with the tail of the first trailer 3 at both ends.

[0022] The support seat 7 is arranged in the rectangular structure, and the circular pipe 8 is installed at the edge of the support seat 7, so that the stability of the rotation of the first trailer 3 around the through shaft is good after the through shaft penetrates through the circular pipe 8.

[0023] Further, the first trailer 3 tail two sides are provided with a second circular tube 9, the second circular tube 9 is used for rotating connection both ends of the rotating shaft. The second circular tube 9 can be connected by welding on the first trailer 3 tail two sides.

[0024] Further, the trailer further comprises: an oil cylinder 5, one end of the oil cylinder 5 is hingedly connected to the tail of the first trailer 3, and the other end of the oil cylinder 5 is hingedly connected to the head of the second trailer 2.

[0025] In use, the oil cylinder 5 is connected to a hydraulic system, and simple control is performed, so that the oil cylinder 5 can be extended and retracted, and the folding and unfolding between the first trailer 3 and the second trailer 2 can be controlled.

[0026] Further, the trailer further comprises: a fixed pin 1, the fixed pin 1 is fixedly connected between the two sides of the support seat 7 and the second trailer 2, and the fixed pin 1 is vertically inserted between the support seat 7 and the second trailer 2, to prevent the support seat 7 and the second trailer 2 from moving transversely.

[0027] The fixed pin 1 is inserted between the support seat 7 and the second trailer 2, so that the relative transverse positions of the two are limited, and the two can be prevented from moving transversely relative to each other.

[0028] Further, the tail of the first trailer 3 is fixedly connected with an oil cylinder bracket 4, and one end of the oil cylinder 5 is hingedly connected with the oil cylinder bracket 4.

[0029] Further, the oil cylinder 5 is two, and the two oil cylinders 5 are symmetrically distributed relative to the second trailer 2.

[0030] The oil cylinder 5 is provided as two, and is symmetrically arranged on both sides of the second trailer 2, so that the two sides of the first trailer 3 can be uniformly stressed, and the folding is more stable.

[0031] Further, the four legs of the second trailer 2 are each connected with a first pad 6 protruding therefrom.

[0032] Further, the four legs of the first trailer 3 are each connected with a second pad 10 protruding therefrom.

[0033] The upper end of the second trailer 2 is provided with the first pad 6, and the upper end of the first trailer 3 is provided with the second pad 10, so that the four legs of the second trailer 2 and the first trailer 3 are in point contact; after folding, the stability of the second trailer 2 and the first trailer 3 is better.

[0034] The above merely describes the embodiments of the present application and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. An automatic folding trailer characterised in that, Include: Support seat (7), second trailer (2), first trailer (3), the support seat (7) is fixedly installed on the upper end of the head of the second trailer (2), the support seat (7) is rectangular structure, the support seat (7) is fixedly connected with circular tube (8) near one end of the head of the second trailer (2), the circular tube (8) is fixedly connected with through rotating shaft inside, the rotating shaft is through the circular tube (8) and both ends of the rotating shaft protrude from the circular tube (8), both ends of the rotating shaft are rotatably connected with the tail of the first trailer (3).

2. The trailer of claim 1, wherein, The tail of the first trailer (3) is provided with second circular tube (9) on both sides, and the second circular tube (9) is used for rotatably connecting both ends of the rotating shaft.

3. The trailer of claim 1, wherein, Also include: oil cylinder (5), the tail of the first trailer (3) is hingedly connected with one end of the oil cylinder (5), and the other end of the oil cylinder (5) is hingedly connected with the head of the second trailer (2).

4. The trailer of claim 1, wherein, Also include: Fixed pin (1), the fixed pin (1) is fixedly connected between both sides of the support seat (7) and the second trailer (2), the fixed pin (1) is vertically inserted between the support seat (7) and the second trailer (2), to prevent the support seat (7) and the second trailer (2) from moving transversely.

5. The trailer of claim 1, wherein, The tail of the first trailer (3) is fixedly connected with oil cylinder support (4), and one end of the oil cylinder (5) is hingedly connected with the oil cylinder support (4).

6. The trailer of claim 5, wherein, The oil cylinder (5) is two, and the two oil cylinders (5) are symmetrically distributed relative to the second trailer (2).

7. The trailer of claim 6, wherein, The first pad (6) protrudes from the four feet of the periphery of the second trailer (2).

8. The trailer of claim 1, wherein, The second pad (10) protrudes from the four feet of the periphery of the first trailer (3).

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