KR101759642B1 - Extend frame insertion type trailer with easy loading of long cargo - Google Patents

Abstract

The present invention relates to an extension frame insertion type trailer which is easy to load long lengths of cargo. More particularly, the present invention relates to an extension frame insertion type trailer which can easily load a long cargo, The present invention relates to a new concept technology that allows the user to operate smoothly without any problems.
Conventionally, the trailer disclosed in the prior art has a severe frictional resistance between the housing and the sliding frame, so that the sliding frame is severely deteriorated in operability and abrasion, and the sliding frame is operated by the cylinder. Therefore, the structure is complicated, .
In order to solve such a problem, the present invention is characterized in that a pair of traveling rollers installed on an elongated frame moves along upper and lower inner surfaces of a frame storage box, and the elongated frame is provided with a receiving roller provided through a rear bottom surface of the frame storage box And the frictional resistance can be greatly reduced while moving smoothly while riding.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an extended frame insertion type trailer,

The present invention relates to a new concept of the present invention, in which an elongated frame accommodated in the rear of a trailer is pulled out to easily load a long cargo, and the extended frame can smoothly operate without friction resistance.

Generally refers to a trailer which is towed to the rear of a truck or tractor such that the trailer is loaded with various loads such as various loads, cargoes, etc., do.

The trailer is broadly divided into a full trailer and a semi trailer depending on the connection type. In the case of a full trailer, the trailer alone carries the weight of the cargo. Therefore, the tractor simply tows the trailer. This type is mainly used to carry lightweight goods because of its simple structure and no brakes.

Semi trailers require a part of the trailer and loading weight directly to the tractor, so the tractor must have both bearing capacity and traction, so the rear wheel is usually double and the connector is installed to facilitate relative movement, connection and separation with the trailer .

In addition, the trailer can be used as a flat bed trailer, a low bed for heavy goods transportation, a dump trailer, a grain conveying trailer, a trailer for oil and liquid transportation, a vacuum trailer for gas transportation, There are various equipments depending on the terrain, contents of transportation, and road conditions, such as transporters for transporting extra large heavy objects.

Such a trailer can minimize the transportation cost by loading the maximum amount of the load within the allowable range of the loaded load so that the trailer structure may be deformed depending on the type of the load.

Furthermore, in recent years, the development of special-purpose roads such as rails produced in steel mills, steel beams such as beam, angle, and channel, and long steel plates in shipyards is also being developed.

In accordance with this tendency, the length of the trailer has been relaxed much, so that the long length trailer has been widely used. However, due to the nature of the ship which is dried in the section steel or the shipyard, It is frequent.

In the case of transporting such long-length cargo, the cargo hung downward from the rear covers the light behind the trailer (brake light, turn signal lamp), and the other vehicle behind the trailer does not see this light, , The cargo (especially, steel plate) stuck to the lower side is continually sluggish, causing permanent deformation and damaging the cargo.

As a prior art for solving these problems, "Registration Utility Model No. 456163, name / rear length variable device of flat trailer" is disclosed, which prevents the rear of a long article There is a feature to secure transportation.

Such a trailer of the prior art has a severe frictional resistance between the housing and the sliding frame, so that the operation of the sliding frame is severely deteriorated and abrasion occurs. Since the sliding frame is operated by the cylinder, the structure is complicated and the manufacturing cost is high. Problems arise.

Also, even if the sliding frame is completely inserted, the rear frame excessively protrudes rearward, resulting in deterioration of safety and appearance, and safety devices for adjusting the rear length are not properly provided, thereby causing safety accidents.

Further, since the maximum extension distance of the sliding frame is limited, it is difficult to transport the cargo having a longer length, and the rear bumper is installed integrally with the trailer.

In order to solve the above-mentioned problems, the present invention provides a method of driving a motorcycle, comprising a pair of traveling rollers installed on an elongated frame and moving along upper and lower inner surfaces of the frame storage box, So that the friction resistance can be greatly reduced.

Further, the present invention provides a technique for accommodating a rear frame connected to a rear end of the extended frame to a receiving recess formed in the rear of the trailer.

The present invention also provides a technique for preventing the flow of the elongated frame by preventing the safety pin from being caught on one of the stoppers attached to the front and rear of the elongated frame when the safety pin received in the pin guider of the frame storage box is pushed into the main frame. I will try.

 In addition, the present invention allows the maximum extension distance of the extension frame to be extended while easily varying the length of the two-stage support frame connected to the extension frame, and assembling the rear bumper to the bumper mount attached to the rear lower end of the main frame The technology to make it possible.

According to the present invention, the frictional resistance between the frame storage box and the elongated frame is reduced to improve the operability of the elongated frame, to reduce the occurrence of abrasion to improve the durability, and to simplify the worker without using a separate cylinder By simplifying the structure to operate the extended frame, the manufacturing cost is greatly reduced, and there is no fear of failure, thereby providing convenience of post management.

In addition, the rear frame formed at the rear end of the elongated frame is housed in a receiving recess formed in the rear of the trailer, so that the rear frame is not projected to the outside, thereby improving safety and appearance.

In addition, when the safety pin accommodated in the pin guider of the frame storage box is inserted into the extended frame, the safety pin is caught on the stopper attached to the front and rear of the extended frame to prevent the flow of the extended frame, do.

In addition, by extending the maximum extending distance of the extended frame by varying the length of the two-stage supporting frame that supports the extended frame, it is possible to smoothly carry the longer-length cargo, and the bumper mounting frame attached to the main frame Since the rear bumper is installed in a prefabricated manner, it can be easily replaced at the time of breakage, thereby providing convenience of maintenance.

1 is a front section view of a trailer to which the present invention is applied;
2 is a plan view of the trailer of the present invention
3 is a right side view of the trailer of the present invention
Fig. 4 is a front sectional view of the extension frame of the present invention,
5 is a front sectional view of a state where a two-stage support is inserted into a first stage support of the present invention
Fig. 6 is a front sectional view of the extension frame of the present invention,
7 is a plan view of the extension frame of the present invention
8 is a sectional side view of the pin guard and the safety pin of the present invention
9 is a cross-sectional view of a two-
10 is a front view of the installation state of the rear bumper of the present invention
11 is a side view of the state in which the rear bumper of the present invention is separated

Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

The overall construction according to a preferred embodiment of the present invention will be schematically described with reference to the accompanying drawings. It can be seen that the components are constituted by a pair of frame storage boxes 10 and a pair of extension frames 20.

Hereinafter, the present invention having the above-described schematic configuration will be described in more detail for facilitating the implementation.

A pair of main frames (2) are provided on both sides of the center of the trailer (1) along the longitudinal direction. The main frame (2) is provided with a pair of frames A plurality of support frames 3 integrally attached to the inner surface of the main frame 2 opposite to each other are provided at equal intervals on the lower side of the frame storage box 10 The frame housing box 10 is prevented from sagging, and the rigidity is further maintained.

The frame housing box 10 serves to accommodate the extending frame 20 extending rearward. The roller bracket 11 attached to the rear both sides of the frame bracket 11 has a frictional resistance when sliding the sliding frame 20 The support roller 12 is rotatably provided on the lower surface of the frame storage box 10 so as to be able to be closely attached to the bottom surface of the extension frame 20, And is exposed to the inside.

A pair of running rollers 22 are provided at the forward end of the elongate frame 20 so that the elongate frame 20 is smoothly inserted back and forth into the frame housing box 10 while sliding on the receiving roller 12. [ And the driving roller 22 moves along the upper and lower inner surfaces of the frame storage box 10 when sliding the extension frame 20 so that the frame storage box 10 and the extension frame 20 are slidably moved It is possible to remarkably reduce the frictional resistance between the adjacent frames 20, thereby improving the operability of the elongate frame 20 and reducing the occurrence of abrasion, thereby improving durability.

The rear frame 23 is integrally connected to the rear end of the extension frame 20 so that the pair of extension frames 20 maintain solid integration with each other. And is formed at a height higher than the upper surface, thereby preventing the cargo from being pushed further toward the rear side, so that it becomes possible to more easily load the long cargo.

The rear frame 23 according to the present invention is housed in the storage recess 5 formed in the rear end of the trailer 1 in a state where the extension frame 20 is housed therein to ensure safety without protruding to the outside, It is possible to provide beauty.

The present invention incorporates a new technique for preventing the occurrence of a safety accident by restricting excessive movement when the extension frame 20 is moved backward or preventing the extension frame 20 from being pulled out in a retracted state.

2 and 8, a pin guider 30 is integrally attached to the inner surface of the frame housing box 10 so as to be communicable with the inside of the frame guards 10, A pair of stoppers 25 and 25a are attached to the center plate 24 of the elongate frame 20 before and after the inner surface facing the center plate 24.

Therefore, when the safety pin 35 is pushed into the frame storage box 10, the extended frame 20 is caught by any one of the stoppers 25 and 25a of the pair of stoppers 25 and 25a, It is possible to prevent the frame from being separated from the frame storage box 10 while keeping it fixed without moving and to prevent the rearward movement from the retracted state, thereby effectively preventing a safety accident.

An operator inserts a finger into the pin moving hole 31 and pushes the safety pin 35 to the outside of the frame storage box 10 by forming a pin moving hole 31 through the outer circumferential surface of the pin guider 30 The stopper 25 (25a) can be released from the engagement state, so that the extension frame 20 can slide smoothly without resistance.

Further, the present invention further incorporates a novel technique for supporting the elongated extension frame 20 extending backward to prevent it from falling down to maintain stability.

As shown in FIGS. 4 to 5, a pair of support frame housings 40 having rear and top openings are spaced apart from each other below the rear end of the main frame 2, A lower end of a two-stage support frame (60) integrally connected to the extended frame (20) drawn out to the rear and extending in a length direction is provided at an upper portion of the first stage support frame Respectively.

The first and second stage support rods 50 and 60 are integrally coupled with each other through a first binding pin 51. The extension frame 20 and the two stage support rods 60 are coupled to each other through a second binding pin 50. [ The first and second stage supports 50 and 60 can stably support the extension frame 20 to prevent sagging.

7, an intermediate portion of the center plate 24 is partly cut, and a support base through-hole 26a is formed in the lower portion of the extension frame 20, The connection holder 26 is integrally provided. The upper portion of the second stage support 60 can be inserted into the interior of the connection holder 26 through the support hole 26a. In this state, both sides of the connection holder 26 and the two- 60 are coupled to the second binding pin 52 through the second binding pin 52. Thus, the two-stage supporting frame 60 and the extended frame 20 are maintained in a firmly connected state, and the connecting operation is very convenient.

The first and second stage support frames 50 and 60 stably support the extension frame 20 so that when the extension frame 20 is received in the frame storage box 10, The first binding pin 51 coupled through the first and second support pins 50 and 60 and the second binding pin 52 coupled through the second support frame 60 and the extension frame 20 are removed, Stage support frame 50 is rotated forward and housed vertically in the support frame housing 40 in a state where the support frame 60 is completely inserted into the inside of the first support frame 50. [

The first binding pin 51 penetrates the upper portion of the second stage support 60. The first binding pin 51 is inserted into the pin fixing groove formed in the upper end of the support base housing 40 42), it is possible to maintain the fixed state while preventing the rotation of the first stage supporter (50).

Although the two-stage support 60 is constructed as a single unit, there is no problem in performing the function of supporting the extension frame 20. However, in the present invention, the two-stage support 60 is constructed as a variable- The maximum extension distance of the elongated frame 20 can be extended according to the length of the elongated frame 20.

In the two-stage support 60 according to the present invention incorporating such a technique, a lower length variable port 61 positioned at the lower portion is fitted into an upper portion of the first-stage support 50, The left screw 62a formed at the lower end of the upper length variable valve 62 and the right screw 61a formed at the upper end of the lower length variable valve 61 are connected to the turnbuckle 63 The upper length variable portion 62, the lower length variable portion 61 and the turn buckle 63 are kept in unity with each other by being screwed together in the upper and lower positions, The length of the elongated frame 20 can be extended to a maximum extent so that the longer length of the cargo can be smoothly transported, thereby greatly reducing the distribution cost.

On the other hand, a pair of bumper mounts 71 are spaced apart from each other at the rear lower end of the main frame 2 as shown in Figs. 10 to 11. Between the bumper mounts 71, The mounting bracket 72 formed on both sides of the upper portion of the rear bumper 70 is fitted between the bumper mounting base 71 and the fastener 73 is mounted on the bumper mounting base 71 and The rear bumper 70 can be quickly and simply replaced without damaging the trailer 1 at the time of breakage of the rear bumper 70 by implementing the technique of being assembled integrally through the mounting bracket 72. [

1: Trailer 2: Mainframe
5: storage ladder 10: frame storage box
12: Support roller 13: Roller passage
20: Extension frame 22: Driving roller
23: rear frame 25, 25a: stopper
26: connection holder 26a:
30: pin guider 31: pin moving hole
35: safety pin 40: support housing
42: pin fixing groove 50: first stage support
51: first binding pin 52: second binding pin
60: second stage support 61: lower length variable sphere
61a: Right screw 62: Upper length adjustable sphere
62a: left-hand thread 70: rear bumper
71: bumper mount 73: fastener

Claims (9)

A pair of main frames 2 spaced from both sides of the center of the trailer 1 and a support roller 12 integrally attached to the outer surface of the main frame 2 facing the center of the trailer 1 and rotatably installed at the rear lower end, A pair of frame storage boxes 10;
And a pair of traveling rollers (11, 12, 13, 14, 15, 16, 17, 18, 17, 18, 22, and a pair of extension frames 20 integrally connected to the rear end of the rear frame 23;
A pin guider 30 is attached to the inner surface of the frame housing box 10 so as to communicate with the inside of the frame housing box 10 and a safety pin 35 accommodated in the pin guider 30 is inserted into the frame housing box 10 The safety pins 35 are engaged with any one of the stoppers 25 and 25a attached to the front and rear of the inner surface of the extended frame 20 so that the extended frame 20 does not move and remains in a fixed state;
A pin moving hole 31 is formed on the outer circumferential surface of the pin guider 30 and a finger is inserted into the pin moving hole 31 to move the safety pin 35 to the outside to fix the stopper 25 Wherein the long-length cargo is easy to load.
The method according to claim 1,
Characterized in that the storage recess (5) is formed in the rear end of the trailer (1) and the rear frame (23) is stored in the storage recess (5) so as not to protrude to the outside. Easy extension frame insert trailer.
delete delete The method according to claim 1,
A pair of support frame housings 40 are provided below the rear end of the main frame 2. An upper portion of the first frame frame 50 rotatably installed at the lower portion of the support frame housing 40 is provided with an extension Stage supporting rods 50 and 60 connected to the frame 20 are fitted to each other and the first and second stage supporting rods 50 and 60 are integrally coupled through the first binding rods 51, Wherein the elongated frame (20) and the two-stage support frame (60) are integrally coupled through a second coupling pin (52).
6. The method of claim 5,
The extension frame 20 connected to the two-stage support frame 60 has a connection holder 26 having a support hole 26a opened at its lower portion in the middle of the center plate 24, The upper portion of the connection holder 26 is inserted into the connection holder 26 through the support base through hole 26a and the second binding pin 52 penetrates both side surfaces of the connection holder 26 and the two- Wherein the long-length cargo is easy to load.
6. The method of claim 5,
A first binding pin 51 coupled through the first and second stage supports 60 when the extension frame 20 is housed inside the frame housing box 10 and a second binding pin Stage supporting frame 50 is inserted into the first-stage supporting frame 50 and the first-stage supporting frame 50 is moved forward The first binding pin 51 passing through the upper portion of the two-stage supporting table 60 after being housed in the inside of the supporting table housing 40 is pivoted to the pin fixing groove 42 formed in the upper end of the supporting table housing 40 So that the rotation of the first stage support frame (50) is prevented.
6. The method of claim 5,
The two-stage support frame 60 has a lower length adjuster 61 inserted in the upper portion of the first support frame 50, an upper length adjuster 62 connected to the extension frame 20, The left screw 62a formed on the sphere 62 and the right screw 61a formed on the lower length variable sphere 61 are integrally screwed on the top and bottom of the turnbuckle 63, Wherein a length of the support frame (60) is extended to extend the maximum extension distance of the extension frame (20).
The method according to claim 1,
A pair of bumper mounts 71 are spaced apart from each other at the rear lower end of the main frame 2. Between the bumper mounts 71 are mounted a mounting bracket 72 formed on both sides of the rear bumper 70, And the bumper mount (71) and the mounting bracket (72) are inserted through the fastening holes (73) so that the bumper mount (71) and the mounting bracket (72) are integrally assembled.

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