KR970001039Y1 - Rear gate of dump truck - Google Patents

Abstract

None.

Description

Rear gate opening and closing structure of light dump truck

1 is a schematic configuration diagram of a rear gate opening and closing structure of a conventional light dump truck.

FIG. 2 is a schematic diagram showing a state in which the rear gate is opened during dumping of the light dump truck of FIG.

3 is a schematic configuration diagram of a rear gate opening and closing structure of the light dump truck according to the present invention.

4 is a schematic diagram illustrating a state in which a rear gate is opened during dumping of the light dump truck of FIG.

Figure 5 is a perspective view of the main portion showing a state in which the locking hook of the present invention to the locking bar.

* Explanation of symbols for main parts of the drawings

101: locking lever 103: hinge bracket

105: rear gate 107: locking bar

109: locking bracket 110: dump hinge bracket

200: locking hook

The present invention relates to a load gate rear gate opening and closing structure of a light dump truck. In particular, the present invention relates to a load gate rear gate opening and closing structure of a light dump truck in which a load can be easily lowered by preventing the load from being caught by the rear gate when dumping and loading the light dump truck.

The dump truck is a truck having a structure for tilting the loading box with the force of the prime mover to easily slide the load loaded on the loading box by gravity. In such dump trucks, the loads loaded on the loading bins vary, and in particular, construction materials such as soil, sand, gravel, and plate occupy a large proportion. However, in the case of unloading such a load in a conventional light dump truck, when the load is an indeterminate load such as soil, sand, or gravel, there is no problem in lowering it. In the case of a bulky load, the load is often caught at the upper end of the rear gate when the load is lowered, making it difficult to lower the load.

Hereinafter, this will be described in detail with reference to FIGS. 1 and 2. FIG. 1 is a schematic view illustrating a rear gate structure of a loading box rear of a conventional light dump truck. A hinge bracket 3 is installed on a rear rib 6 of the loading box, and a rear portion of the hinge bracket 3 is provided. A coupling rod 4 integrally connected to the upper portion of the gate 5 is hinged by a hinge pin 2, which is opened and closed by a locking lever 1 installed on the hinge bracket 3. On the other hand, a locking bracket (9) is installed at the rear end of the loading box bottom part 22, and a dumping hinge hinges the loading box bottom part 22 and the frame 21 so that the loading box pivots during dumping. The hinge bracket 10 is installed between the storage box bottom 22 and the frame 21. In addition, a locking bar 7 is coupled to the dump hinge bracket 10 by a pivot pin 13, and one end 71 of the locking bar 7 is connected by a spring 11 to the dump hinge bracket. The curved other end 72 of the locking bar 7, which is connected to the 10 and extends to the locking bracket 9, engages the lower protruding hook 8 of the rear gate 5 to the locking bracket 9. . The locking bar 7 is pivotable about the pivot pin 13, and since the spring force is applied to the end portion 71 of the dump hinge bracket, the downwardly protruding hook 8 is applied to the other end portion 72 that is curved. And the force to maintain the engaged state between the locking bracket 9 is always applied. Therefore, in order to open the rear gate 5, the locking bar 7 needs to be turned to release the engaged state of the downwardly protruding hook 8 and the locking bracket 9.

FIG. 2 schematically shows the structure of the loading gate rear gate in a state where dumping is performed after turning the locking bar 7 to release the engaged state of the downwardly protruding hook 8 and the locking bracket 9 as described above. . In this case, as shown in the figure, a load such as a plate may be caught by the rear gate 5 during dumping, and a failure may occur in lowering the load.

The present invention was devised to solve the above problems, and the object of the present invention is to prevent the load from being caught on the rear gate when dumping the load, so that the load can be easily lowered. It is to provide a gate opening and closing structure.

In order to achieve the above object, the present invention is to load the light dump truck to open the rear gate so that the load can be lowered to the rear side during the dumping or to close and secure the rear gate to prevent the loading of the load in the loaded state. As a rear gate opening and closing structure,

An upper hinge structure including a hinge bracket installed on the rear end rib of the storage box and a hinge pin and a locking lever coupled to the hinge bracket;

The rear gate is hinge-coupled to the hinge bracket by the hinge pin, and the coupling rod to which the hinge coupling is fastened or released by the locking lever is formed in the upper part, the rear gate formed integrally with the lower protruding hook at the bottom, and the bottom of the loading box. A dump hinge bracket hinged to the frame, a locking bracket installed at the bottom end of the loading box, a spring and a pivot pin installed at the dump hinge bracket, and a pivot hinge bracket pivotally pivoted about the pivot pin. A locking bar extending to the locking bracket so that one end thereof is connected to the dump hinge bracket by the spring, and the other end is engaged with the locking bracket to engage the downwardly protruding hook of the rear gate; To limit the movement of one end of the spring to which the locking bar is connected It provides a rear gate opening and closing structure of the light box of the dump truck, characterized in that it comprises a lower fastening structure including a locking bar that can be fastened to one end.

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

FIG. 3 illustrates a rear gate structure of a loading box rear side of a light dump truck according to an embodiment of the present invention, and has a structure similar to that shown in FIG. That is, the hinge bracket 102 is installed on the rear end rib 106 of the loading box, and the coupling rod 104 integrally connected to the upper portion of the rear gate 105 is connected to the hinge pin 102 on the hinge bracket 103. Is hinged by, the hinge coupling is opened and closed by a locking lever 101 installed in the hinge bracket (103). In addition, a dump hinge briquette 110 and a locking bracket 109 are respectively installed between the loading bin bottom 122 and the frame 121 and at the rear end of the loading bin bottom 122, and the locan bar 107 is pivot pin 113. It is coupled to the dump hinge bracket 110 to be pivotable around the center. One end 171 of the locking bar 107 is connected to the dump hinge bracket 110 by a spring 111 to receive the action of the spring force, the other end 172 is curved to protrude downward of the rear gate 105 The point that allows the hook 108 to engage the locking bracket 109 is the same as that of FIG. However, unlike the structure of FIG. 1, the dump hinge bracket 110 is provided with a locking hook 200, the locking hook 200 is engaged with the locking bar 107, the spring of the locking bar 107 ( 11) it is possible to limit the movement of the one end 171 is fastened.

With the above structure, the rear gate can be opened as shown in FIG. 4 during dumping. That is, first, the locking hook 200 is hooked on one end 171 of the locking bar 107 so that the engagement state between the downward protruding hook 108 and the locking bracket 109 of the rear gate 105 is not released, and the hinge When the locking lever 101 of the bracket 103 is operated to release the engagement state between the coupling cord 104 and the hinge pin 102 of the rear gate 105, and dumping the reservoir, the rear gate 105 Is rotated down about the downwardly protruding hook 108 and opened in a suspended state between the downwardly protruding hook 108 and the locking bracket 109 as shown in FIG.

In this state, one end 171 of the locking bar 107 is locked to the locking hook 200 as shown in FIG. 5 so that the other end 172 cannot be folded up around the pivot pin 131. There is no fear that the load coming down the loading box bottom 122 hit the locking bar 107.

In addition, since the rear gate 105 is rotated downward with respect to the downwardly protruding hook 108 and is opened in a suspended state between the downwardly protruding hook 108 and the locking bracket 109, the load is lowered to the rear gate 105. There is no fear of being hit.

That is, the load can be lowered without being disturbed by the locking bar 107 or the rear gate 105.

When dumping the stack and lowering the load and closing the stack in this way, the stack is lowered to its original state and the rear gate 105 suspended between the lower protruding hook 108 and the locking bracket 109 is provided with the lower protruding hook 108. It is lifted to the upper side to be rotated to the center, and the coupling rod 104 of the rear gate 105 is coupled to the hinge pin 104, and then the locking lever 101 is operated to engage.

In this state, when the locking hook 200 holding the one end 171 of the locking bar 107 is released to release the locking bar 107 from the locking bar 107, the locking bar 107 is centered on the pivot pin 113. And the elastic force of the spring 111 is applied to the locking bar 107 on the side of the dump hinge bracket 110 so that the other end 172 of the locking bar 107 tries to rotate downward. The engagement between the locking bracket 109 and the locking bracket 109 is maintained firmly without fear of deviation.

As described above, the light dump truck rear gate structure of the light dump truck according to the present invention, when unloading the load by dumping the load container as well as the irregular load of soil, sand, gravel, etc. Even in the case of a load having a large volume, the load is prevented from being caught by the locking bar 107 and the rear gate 105, so that the load can be easily lowered.

Claims (1)

A rear gate opening and closing structure of a light dump truck for opening the rear gate so that the load can be lowered to the rear side of the loading box when dumping or closing and closing the rear gate to prevent the loading of the load from being loaded. An upper hinge structure including a hinge bracket 103 installed on the 106 and a hinge pin 102 and a locking lever 101 coupled to the hinge bracket 103, and the hinge bracket by the hinge pin 102. The rear gate is hinged to the 103, the rod 104 to which the hinge coupling is fastened or released by the locking lever 101 is integrally formed at the upper portion, and the lower protruding hook 108 is integrally formed at the lower portion of the rear gate ( 105 is coupled to the dump hinge bracket 110 so as to be pivotable about the pivot pin 113, and one end 171 is connected to the dump hinge bracket 110 by a spring 111 and the other end thereof. Is The locking bar 107 is extended to the locking bracket 109 so as to engage the downwardly protruding hook 108 of the rear gate 105 to the locking bracket 109 and the spring 111 is connected to the locking bracket 109. And a lower fastening structure including a locking hook 200 that can be fastened to the one end 171 so as to limit the movement of the one end 171 of the locking bar 107. Gate rear opening and closing structure for the dump truck.