KR20200140379A - Cargo vehicle loading box cover opening and closing device - Google Patents

Abstract

The present invention relates to a loading box cover opening and closing device for a freight vehicle, comprising: a rail plate in which upper ends of both side plates of a freight vehicle loading box are bent inward; At least one slider formed in a block shape and slid in close contact with the upper surface of each rail plate; A cover rib having a curved beam shape and having both ends coupled to the sli cover facing each other to surround an upper portion of the loading box; A pair of first fixing pulleys installed in front of both side plates of the loading box; A pair of second fixing pulleys provided at the rear of both side plates of the loading box; A cable wound up so that the first fixed pulley and the second fixed pulley are interlocked, and penetrated through each of the sliders, and coupled to the slider at the rear end; And an opening/closing drive means installed on the front plate of the loading box to reciprocate and slide the slider coupled to the cable by rotating the first fixed pulley forward or reverse, but extending downwardly at the outer lower part of each slider. Each of the locking members is provided, and locking bars to which the locking members can be held are formed at predetermined intervals on both side plates of the loading box.

Description

Cargo vehicle loading box cover opening and closing device

The present invention relates to a loading box cover opening and closing device for a freight vehicle, and more particularly, to a loading box cover opening and closing device for a freight vehicle capable of manually or automatically opening and closing a cover covering a loading box of a freight vehicle.

In general, a loading box for a freight vehicle is a space for loading and transporting various construction materials, wastes, waste concrete, household waste, wood, waste wood, and various mixtures. Under the law, it is required to operate with a cover on the loading box.

However, in the case of an arm roll vehicle, a dump truck, or a cleaning vehicle that carries garbage, it is cumbersome for the driver to put on the loading box cover, so that the aggregate and garbage loaded in the loading box fall off the road. It provided the cause of traffic accidents to other vehicles that followed, and there was a problem of polluting the environment.

Accordingly, in order to solve the above problem, an automatic opening and closing device of various structures of the loading box cover has been invented so that the loading box cover can be automatically covered, but this is complicated in configuration and is not easy to manufacture, so the installation cost is high. Because failure occurs frequently, it is not practical, and maintenance costs are high, and electrical and mechanical power are required.

1 is a perspective view showing the structure of a loading box cover opening and closing device of a conventional freight vehicle.

As shown, in the loading box cover opening and closing device of a conventional freight vehicle, a guide plate 1a bent inward is formed at both edges of the loading box 1, and the upper part of the guide plate is placed on the upper surface of the guide plate. A plurality of sliders (2) sliding back and forth along a surface, a plurality of ribs (3) supporting the cover while connecting between the facing sliders, and a pair of first fixings fixed to both rear sides of the loading box Pulley (4), a pair of second fixed pulleys (5) provided on both front sides of the loading box and interlocked with the first fixed pulley and cable (c), and a drive shaft that is axially coupled between the second fixed pulley ( 6), a drive pulley 7 interlocked with one of the second fixed pulleys by a wire, a manual handle 8 capable of rotating the drive pulley, and a motor 9 rotating the drive shaft. It consists of including.

At this time, the sliders are caught while the cables hung on the fixed pulley and the driven pulley pass through, and the slider at the most rear is fixed to the cable.

Accordingly, when the manual handle or the motor is driven, the drive shaft rotates, and when the cable is moved horizontally, the rearmost slider also moves with the other sliders being pushed forward and the cover is folded.

In such a conventional loading box cover opening and closing device, there is a risk that the slider is separated from the guide plate due to vibration or wind power during vehicle operation because the slider is simply mounted on the upper surface of the guide plate and slides.

There is even a risk of the ribs overturning due to the slider's departure.

This causes a safety problem as the cover covering the cargo is lifted and the cargo inside is scattered to the outside.

In addition, there is a problem in that the sliders collide with the guide plate, causing a large noise when driving the vehicle.

Accordingly, the present invention is to solve the above-described problem, and an object of the present invention is that a slider that induces movement of the cover rib forming the frame of the cover does not deviate from the rail plate during vehicle operation and can be stably fixed. It is to provide a loading box cover opening and closing device.

And it is to provide a loading box opening and closing device of a freight vehicle further provided with an auxiliary cover at the rear so that the cover can completely cover the loading box.

A cargo vehicle loading box cover opening and closing apparatus according to the present invention for achieving the above object comprises: a rail plate in which upper ends of both side plates of the cargo vehicle loading box are bent inward; At least one slider formed in a block shape and slid in close contact with the upper surface of each rail plate; A cover rib having a curved beam shape and having both ends coupled to the sli cover facing each other to surround an upper portion of the loading box; A pair of first fixing pulleys installed in front of both side plates of the loading box; A pair of second fixed pulleys provided at the rear of both side plates of the loading box; The first fixed pulley and the second fixed pulley

A cable that is wound to be interlocked and penetrates each of the sliders, and is coupled to the slider at the rearmost; And an opening/closing drive means installed on the front plate of the loading box to reciprocate and slide the slider coupled to the cable by rotating the first fixed pulley forward or reverse, but extending downwardly at the outer lower part of each slider. Each of the locking members is provided, and locking bars to which the locking members can be held may be formed on both side plates of the loading box at regular intervals.

Here, the locking member has a locking groove opened to the rear side of the loading box, and the inlet side of the locking groove is rounded to facilitate the insertion of the locking bar.

In addition, each of the locking members is formed to become longer or shorter in height from the front to the rear.

In addition, the opening/closing driving means includes a drive shaft axially coupled between the pair of first fixed pulleys, a driven pulley axially coupled with the drive shaft, a drive pulley interlocked with the driven pulley, and a handle for manually rotating the drive pulley. It may include, or may include a drive shaft that is shaft-coupled between the pair of second fixed pulleys and a drive motor that is installed in the middle of the drive shaft to rotate the drive shaft.

On the other hand, on the outer side of both sliders located at the rearmost side, an auxiliary cover having a'┏┓' shape to cover the rear side of the loading box and to which a cover is attached may be rotatably coupled.

At this time, a tension spring is interposed between the cover rib coupled to the slider located at the rear and the auxiliary cover, and engaging bars extending at a certain angle are formed at both ends of the auxiliary cover, and the engaging bars are formed on both sides of the loading box. Protruding stoppers may be formed so that the bars can be hung.

According to the present invention having the above configuration, when the cover is opened and closed, the slider slides stably while seated on the rail plate, and each slider is fixed by locking the locking bar by the locking member. There is no risk of overturning the cover rib.

Therefore, it is safe because the cargo inside the cargo vehicle loading box is not scattered to the outside.

In addition, since the slider can keep in close contact with the rail plate, it does not collide and no noise is generated.

In addition, the auxiliary cover is provided on the rear of the loading box, so it has the advantage of completely covering the cargo.

1 is a perspective view showing the structure of a loading box cover opening and closing device of a conventional freight vehicle
2 is a perspective view showing the overall structure of a loading box cover opening and closing device for a freight vehicle according to an embodiment of the present invention
3 is a cross-sectional view of a main part of the present invention shown in FIG.
Figure 4 is a front view showing the locking means of the present invention
Figure 5 is an operating state diagram of the present invention

Hereinafter, an embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

For reference, the description with reference to the drawings is for easier understanding of the present invention, and the scope of the present invention is not limited thereto. Further, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, a detailed description will be omitted.

2 is a perspective view showing the overall structure of a loading box cover opening and closing device of a freight vehicle according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of a main part of the present invention shown in FIG.

The present invention is large as shown in the rail plate 10, the cover rib 20, the slider 30, the first fixed pulley 40, the second fixed pulley 50, the cable 60, opening and closing drive means ( 70) and may be configured to include a locking means (80).

First, the rail plate 10 is formed in the loading box 100 of a freight vehicle, and has a shape in which upper ends of both side plates 130 of the loading box 100 are bent inward. In general, the loading box 100 is composed of both side plates 130, the front plate 110 and the rear plate 120, and a bottom plate so as to load cargo, and forms a rectangle with an open top.

Accordingly, the rail plate 10 may have a shape such as a'b'-shaped angle in a cross section by folding the upper end of the side plate 130 of the loading box 100 inward.

In addition, since the rail plate 10 guides the sliding while supporting the slider 30, it may be continuously formed from the front to the rear of the side plate 130.

Further, the width of the rail plate 10 may be equal to or smaller than the width of the slider 30 to be described later.

Next, the cover rib 20 will be described.

The cover rib 20 is attached to the cover (c) covering the loading box 100 at regular intervals to form the skeleton of the cover (c), and may have an approximately curved beam or bow shape.

In addition, the cover rib 20 may be manufactured by bending a solid-shaped beam having a circular or square cross section, or by bending a hollow tube.

Sliders 30 facing each other are coupled to both ends of the cover rib 21 so that the cover rib 21 surrounds the upper portion of the loading box.

The cover (c) may have both edges fixed to each of the sliders 30.

Next, the slider 30 is formed in a block shape like a substantially rectangular parallelepiped, and is coupled to both ends of the cover rib 20. That is, two are coupled to each of the cover ribs 20.

In addition, each of the sliders 30 is mounted on the rail plate 10.

In addition, as the cover c is coupled to the slider 30, the cover extends to and covers the side of the slider so that the slider is not exposed to the outside.

For reference, the material of the slider 30 may be a synthetic resin material having a smooth and soft surface. Therefore, it can slide smoothly along the surface of the rail plate 10.

Next, the first fixed pulley 40 and the second fixed pulley 50 will be described.

The first fixing pulley 40 is fixed to the front of the loading box 100 and is disposed on the outer surface of the front plate 110 of the loading box 100. As shown, but positioned in front of the rail plate 10, it is installed rotatably. At this time, the first fixed pulley 40 is vertically installed side by side so as to be wound by the second fixed pulley 50 and the cable 60.

At this time, the second fixing pulley 50 is fixed to the rear of the loading box 100, and a pair is provided on each side plate, one each. It is fixed to the rear outer surface of the side plate 130 of the loading box 100. Specifically, as shown, the rail plate 10 is vertically positioned at the rear lower side, but is coupled to the side plate 130 of the loading box 100 so as to be rotatable.

Next, a cable 60 is wound around the first fixed pulley 40 and the second fixed pulley 50.

As shown, the first fixed pulley 40 and the second fixed pulley 50 on one side of the loading box 100 form a pair and are wound to be interlocked by one cable 60, and the other side The first fixed pulley 40 and the second fixed pulley 50 formed in pairs are wound so as to be interlocked by the other cable 60.

Here, the cable 60 is wound around the first and second fixed pulleys 40 and 50 and passes through the sliders 30 respectively. As shown in FIG. 3, the cables 60 positioned on the upper side pass through the plurality of sliders 30 mounted along the rail plate 10, respectively.

To this end, through holes 31 are formed in each of the sliders 30. In addition, one more through hole 31 may be formed as a preliminary.

At this time, the inner diameter of the through hole 31 is formed larger than the outer diameter of the cable 60 so that the slider 30 does not get caught in the cable 60.

However, two of the sliders 30 at the rearmost are fixed to the cable 60, respectively. Thus, when the cable 60 moves, it is operated to move along the cable 60 together.

Next, the front plate 110 of the loading box 100 is provided with an opening/closing driving means 70 capable of rotatingly driving the first fixed pulley 40.

First, when the first fixed pulley 40 is manually rotated, the opening and closing driving means 70 may be composed of a drive shaft 71, a driven pulley 72, a driving pulley 73, and a handle 74. have.

Specifically, a drive shaft 71 is interposed between the pair of first fixed pulleys 40. That is, the first fixed pulley 40 is shaft-coupled to both ends of the drive shaft 71, and the first fixed pulley 40 rotates as the drive shaft 71 rotates.

In addition, a driven pulley 72 is further provided on the drive shaft 71. That is, it may be installed adjacent to any one of the first fixed pulleys 40.

In addition, a driving pulley 73 may be installed below the driven pulley 72. The driving pulley 73 is connected to be interlocked with the driven pulley 72 by a separate cable 60a.

A handle is coupled to the driven pulley 72 so that the driven pulley 72 rotates by rotating the handle 74, and when the driving pulley 73 rotates in succession, the entire drive shaft 71 rotates.

Another embodiment of the opening/closing driving means 70 is a case of automatically rotating the first fixed pulley 40. In this case, the opening/closing driving means 70 may include a drive shaft 71 and a drive motor 75.

That is, the drive motor 75 is installed on the front plate 110 of the loading box 100, and the drive motor 75 is interlocked with the drive shaft 71 by a power transmission means such as a gear. Accordingly, the drive motor 75 is operated to rotate the drive shaft 71.

As shown differently, it may have a structure in which both the manual and automatic opening/closing driving means are installed.

Here, in the case of the handle 74, forward rotation or reverse rotation is possible, and the driving motor 75 is also controlled to enable forward rotation and reverse rotation.

Next, the locking means 80 will be described with reference to FIG. 4. Figure 4 is a front view showing the locking means of the present invention.

The locking means 80 is for fixing the sliders 30 so that they do not deviate when the cover c is unfolded to completely cover the cargo, that is, the sliders 30 are spaced apart from each other. ) And a locking bar 82.

The locking member 81 is coupled to the lower portion of each of the sliders 30 and extends downward, and may be directly coupled to the slider 30 or may be connected by a connecting member 32 as shown.

In order for the locking member 81 to be coupled to the slider 30, the outer side of the slider 30 may protrude longer than the width of the rail plate 10.

A locking groove 83 is formed under the locking member 81.

The locking groove 83 is to be caught while the locking bar 82 is retracted, and has a shape opened toward the rear side of the loading box 100.

In addition, the width of the locking groove 83 may be equal to or slightly larger than the outer diameter of the locking bar 82.

It is preferable that the inlet side of the locking groove 83 is rounded to induce the insertion of the locking bar 82 to facilitate locking.

Meanwhile, the locking bar 82 protrudes vertically from the side plate of the loading box 100, and the protruding length of the locking bar 82 may protrude through the locking groove 83 of the locking member 81. The length is adequate.

Preferably, the length of the locking member 81 at the front of the loading box 100 is the longest and gradually becomes shorter, so that the length of the locking member 81 at the rearmost is formed to be the shortest. More specifically, the position of the locking groove 83 of the locking member 81 in the rearmost position is the highest and gradually lowered from the ground, so that the position of the locking groove 83 of the locking member 81 in the foremost position is the lowest. I can.

Correspondingly, the locking bars 82 inserted and caught in the locking grooves 83 are also disposed at the same height.

By this arrangement, the locking member 81 and the locking bar 82 do not collide with each other when opening and closing the cover.

In the present invention, an auxiliary cover 21 may be further provided at the rearmost side of the loading box 100 to completely cover the rear surface of the loading box 100.

In general, even if the cover is covered on the loading box 100 by the cover rib 20, the rear surface of the loading box 100 is partially exposed. Therefore, a structure that can completely cover it is required.

The auxiliary cover 21 has an approximately'┏┓' shape and is attached to the cover so that both ends are rotatably coupled to the outer side of both sliders 30 located at the rearmost side.

Specifically, both ends of the auxiliary cover 21 may be hinged to the outer surface of the rearmost slider 30.

In addition, a tension spring 23 is interposed between the auxiliary cover 21 and the rearmost cover rib 20. Due to the tension spring 23, the auxiliary cover 21 maintains a superposed state rather than an unfolded state from the cover rib 20.

At this time, when the cover rib 20 is fully unfolded and unfolded, engaging bars 22 are extended at both ends of the secondary cover 21 so that the secondary cover 21 is also fully unfolded.

The locking bar 22 extends to the side plate 130 of the loading box 100, but may form a predetermined angle with the auxiliary cover 21.

In addition, a stopper 24 is protruded from the side plate 130 of the loading box 100 to allow the locking bar 22 to be caught, so that the locking bar 22 can be held and supported as it proceeds.

Therefore, when the cover ribs 20 are unfolded in a superimposed state, the locking bar 22 is caught by the stopper 24, and thus the locking bar 22 and the auxiliary cover 21 in a vertical state are While gradually positioned horizontally, the rear surface of the loading box 100 is completely covered.

Hereinafter, an operation process of the present invention will be described with reference to FIG. 5. 4 is an operational state diagram of the present invention, (a) shows a state in which the cover ribs are all overlaid and the cover is folded, and (b) shows a state in which the cover ribs are all unfolded to cover the loading box.

When the operator manually operates the handle 74 or rotates the drive shaft 71 by operating the drive motor 75, the pair of first fixed pulleys 40 are shaft-coupled to both ends of the drive shaft 71. ) Are rotated at the same time.

When the first fixed pulley 40 rotates, the second fixed pulley 50 also rotates in the same direction, thereby moving the cables 60, respectively. As shown in (a), the slider 30 When the passing cable 60 moves to the front of the loading box 100, all of the sliders 30 are in a stationary state, but the slider 30c at the rearmost side is fixed to the cable, and thus moves forward together.

When the cable 60 continues to move, the rearmost slider 30c moves while pushing the other sliders 30a and 30b that were stopped, so that all the sliders 30 are concentrated forward and the cover ribs 20 overlap. Folded.

At this time, as the sliders 30 move, the locking member 81 hanging from the locking bar 82 is separated.

Accordingly, the loading box 100 is opened while the cover c attached to the cover rib 20 is folded.

At this time, the auxiliary cover 21 is vertically erected while being overlapped with the rearmost cover rib 20 by the tension of the tension spring 23.

Conversely, when all the cargo is loaded and the cover is closed as shown in (b), the handle 74 or the driving motor 75 is rotated in the opposite direction so that the first fixed pulley 40 rotates in the opposite direction.

In this case, the cable 60 moves in the opposite direction, and the rearmost slider 30c fixed to the cable 60 is also moved rearward, in which case the cover rib 20 is opened and disposed at regular intervals, and the cover The cover (c) attached to is unfolded.

At this time, when the rearmost slider (30c) does not collide with the locking bars (82) and reaches the rearmost locking bar (82c), the rearmost locking bar (82c) is coupled to the rearmost slider (30c). It is caught while being inserted into the locking groove 83 of the locking member 81c.

At the same time, other locking bars 82a and 82b are also caught while being inserted into the locking grooves 83 of the corresponding locking members 81a and 81b, respectively. In this way, since each locking member 81 is caught by the locking bar 82 and is firmly fixed, the sliders 30 do not deviate or vibrate from the rail plate 10 during operation.

On the other hand, as the rearmost cover rib 20 moves to the rear, the locking bar 22 is caught by the stopper 24 so that it cannot move any more and rotates, so that it is gradually placed horizontally, and the auxiliary cover ( 21) is unfolded while rotating downward so that the cover to which the auxiliary cover 21 is attached can completely cover the rear of the loading box.

Although the exemplary embodiments of the present invention have been described above with reference to the drawings, a person of ordinary skill in the field to which the present invention belongs will be able to perform various applications and modifications within the scope of the present invention based on the above contents. Therefore, the scope of the present invention is limited to the described embodiments and should not be determined, and should not be determined by the claims to be described later, but also by those equivalents to the claims.

Claims (7)

Rail plates in which upper ends of both side plates of the freight vehicle loading box are bent inward;
At least one slider formed in a block shape and slid in close contact with the upper surface of each rail plate;
A cover rib having a curved beam shape and having both ends coupled to the slider facing each other to surround an upper portion of the loading box;
A pair of first fixing pulleys installed in front of both side plates of the loading box;
A pair of second fixed pulleys provided at the rear of both side plates of the loading box;
A cable wound up so that the first fixed pulley and the second fixed pulley are interlocked, and penetrated through each of the sliders, and coupled to the slider at the rear end;
And an opening/closing driving means installed on the front plate of the loading box and configured to reciprocate and slide the slider coupled to the cable by rotating the first fixed pulley forward or backward.
Opening and closing of the loading box cover of a freight vehicle, characterized in that a locking member including a locking member extending downwardly at an outer lower part of each of the sliders and a locking bar formed at regular intervals so that each locking member is caught on both side plates of the loading box is provided. Device. The method of claim 1,
The locking member has a locking groove opened to the rear side of the loading box,
The inlet side of the locking groove is a loading box cover opening and closing device for a freight vehicle, characterized in that the rounding treatment to facilitate the insertion of the locking bar. The method of claim 2,
Each of the locking members is a loading box cover opening and closing device for a freight vehicle, characterized in that the height is gradually shorter as it goes from the front to the rear. The method of claim 1,
The opening and closing driving means,
And a drive shaft axially coupled between the pair of first fixed pulleys, a driven pulley axially coupled with the drive shaft, a drive pulley interlocked with the driven pulley, and a handle for manually rotating the drive pulley A device for opening and closing the cover of a cargo vehicle. The method of claim 1,
The opening and closing driving means,
A loading box cover opening/closing device for a freight vehicle comprising a drive shaft shaft-coupled between the pair of second fixed pulleys, and a drive motor installed in the middle of the drive shaft to rotate the drive shaft. The method according to any one of claims 1 to 5,
Outside of each slider located at the rear,
A loading box cover opening and closing device of a cargo vehicle, characterized in that the auxiliary cover to which the cover is attached is rotatably coupled to form a'┏┓' shape to cover the rear of the loading box. The method of claim 6,
A tension spring is interposed between the cover rib coupled to the slider located at the rear and the auxiliary cover rib,
At both ends of the auxiliary cover, a locking bar extending at a certain angle is formed,
A loading box cover opening and closing device for a cargo vehicle, characterized in that the stoppers protruding so that the locking bars can be respectively caught are formed on both side surfaces of the loading box.

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