KR200238660Y1 - Lifting apparatus for goods loading of a truck - Google Patents

Abstract

The present invention relates to a lifting device for loading cargoes integrally configured with a cargo vehicle, by using a door formed at the rear of the loading box of the cargo vehicle to form a lifting device for loading and unloading by hand, without the need for a separate loading equipment In order to reduce cargo loading time and cost and to solve problems such as safety accidents by loading and lifting cargo without depending on the In the cargo loading device configured in the rear portion, a pair of first double-acting cylinder is coupled to the lower side of the both sides of the door (10) rotatably and the other end rotatably on the rear frame of the freight vehicle ( A door opening and closing means (20) configured to open and close the door (22); As long as one end is rotatably coupled to the lower side of the both sides of the door 10 corresponding to the position close to the first double-acting cylinder 22 and the other end is rotatably coupled to the rear frame of the freight vehicle. A pair of shankdong member 32 and one end is rotatably coupled to the upper side of the shankdong member 32, and the other end is rotatably coupled to the rear frame of the freight vehicle to lift and lift the shankdong member 32 A door lift means 30 comprising a second double acting cylinder 34 for applying a driving force; Hydraulic driving control unit 40 is configured to drive and control the first and second double-actuated cylinders 22 and 34 to open and close the door and to lift and lower the door.

Description

LIFTTING APPARATUS FOR GOODS LOADING OF A TRUCK}

The present invention relates to a lifting device for loading cargoes integrally configured with a freight vehicle, and more specifically, a separate loading device is required by configuring a lifting device for lifting cargoes that is moved up and down using a door formed at the rear of a loading box of the freight vehicle. The present invention relates to a cargo loading lifting device integrally configured with a freight vehicle that can load cargo without manual labor.

In general, a cargo vehicle provided with a cargo loading space such as a loading box at the rear of the cab to load and transport the cargo has a certain height from the ground, so that the cargo loading space is lifted up to load the cargo.

And, in order to load the cargo is to release the lock of the door configured to open and close the rear of the loading box of the vehicle and when the locking device is released in this state by applying an external force to the door body to open the load is possible. When loading of cargo is completed, the door is rotated again to close and then the lock is operated to secure the cargo.

In addition, in order to load a heavy cargo in the loading box of the vehicle using a lifting device such as a forklift truck is lifted in the state of loading the load it is loaded on the loading box.

However, the method of loading the cargo in the state of unlocking the door by opening the door by manual work is all the work is done by manual work, so there is a risk of safety accident and a lot of loading time is required. There was a problem that the logistics time is increased.

In addition, when the cargo loaded in the loading box is a heavy item, a separate loading device such as a forklift and a driver for driving the loading device are required, thereby increasing the loading cost.

In particular, the freight box that has been containerized so that the cargo loading space in which the cargo is loaded is enclosed, and the cargo is loaded with opening and closing the door by manual operation through the limited size of the door formed at the rear of the door. There is a further increasing problem, there is a problem that the box-shaped loading box is damaged when loading the cargo using a loading equipment such as a forklift to the vehicle provided with a box-type loading space.

The present invention is to solve the problems as described above, the purpose is to configure the lifting device for loading the cargo to move up and down by using the door formed on the rear of the loading box of the cargo vehicle not to require a separate loading equipment by manual work It is to provide a lifting device for loading cargoes integrally configured with a freight vehicle to reduce the load time and cost, and to solve problems such as safety accidents by loading and lifting the cargo without lifting.

In order to achieve the above object, the present invention is a lifting device for loading the cargo configured in the rear of the cargo vehicle having a door that is configured to be rotatable in the vertical direction at the rear of the loading box, the lower side of both sides of the door A door opening / closing means configured by a pair of first double acting cylinders whose one end is rotatably coupled and the other end is rotatably coupled on the rear frame of the freight vehicle; A pair of shank-dong members that are rotatably coupled to one end of both sides of the door corresponding to a position close to the first double-acting cylinder, and the other end of which is rotatably coupled to the rear frame of the freight vehicle. A door lifting means composed of a second double acting cylinder configured to pivotally engage one end of the upper and lower ends of the shank moving member and the other end of the shank moving member on the rear frame of the freight vehicle to apply a lifting driving force to the shank moving member; A hydraulic drive control unit including a hydraulic pump and a directional control valve is included to drive and control the first and second double acting cylinders so that the door can be opened and closed.

Preferably, the hinge member is formed so that the hinge portion is rotatably coupled to the support bracket which is protruded at regular intervals on the lower end of the protruding jaw formed at the lower end of the door corresponding to the inside of the door opening and closing means, the hinge portion The upper end portion is formed so that the support surface is in close contact with the bottom surface of the protruding jaw in the state in which the door is opened by the door opening and closing means is lifted while maintaining the plane state by blocking the rotation of the door in the process of lifting the door And a horizontal member connected to the left and right shank members on the upper inner surface of the shank member close to the support surface.

In addition, the shandong copper member is characterized in that it is composed of a 'c' section steel is opened to the lower side to accommodate the second double-acting cylinder therein.

1 is a perspective view schematically showing a lifting device for loading cargo integrated with a freight vehicle according to an embodiment of the present invention;

2 is an enlarged exploded perspective view of portion A of FIG.

3 is an enlarged view of a portion B of FIG. 1;

Figure 4 is a hydraulic circuit diagram that enables the operation of the lifting device for loading cargoes integrally configured in the cargo vehicle according to the invention,

5 is a first operating state of the lifting device for loading cargoes integrally configured in the cargo vehicle according to the preferred embodiment of the present invention,

6 is a second operating state diagram of a lifting device for loading cargo configured integrally with a cargo vehicle according to a preferred embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: door, 20: door opening and closing means,

22: first double-acting cylinder, 30: door lift means,

32: up and down moving member, 34: second double-acting cylinder,

36: horizontal member, 40: hydraulic drive control part.

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

1 is a perspective view schematically showing a lifting device for loading a cargo integrally configured in a freight vehicle according to a preferred embodiment of the present invention, FIG. 2 is an enlarged exploded perspective view of part A of FIG. 1, FIG. 3 is B of FIG. 4 is a hydraulic circuit diagram for enabling the operation of the lifting device for loading cargoes integrally configured in the freight vehicle according to the present invention, and FIG. 5 is a cargo loading integrally configured in the freight vehicle according to the preferred embodiment of the present invention. Figure 1 is a first operating state of the lifting device, Figure 6 is a second operating state of the cargo loading device is integrally configured in the cargo vehicle according to a preferred embodiment of the present invention.

Lifting device for cargo loading integrally configured in the cargo vehicle according to an embodiment of the present invention is a door 10 which is configured to be opened and closed in the vertical direction to the rear of the loading box as shown in Figure 1 and 2, One end of the door 10 is rotatably coupled to one end and the other end is composed of a pair of first double acting cylinder 22 is rotatably coupled on the rear frame of the freight vehicle door opening and closing for opening and closing the door While the means 20 is configured, one end is rotatably coupled to both lower portions of the door 10 corresponding to the position close to the first double acting cylinder 22, and the other end is rotatable on the rear frame of the freight vehicle. And a pair of shankdong members 32 for elevating the door, and one end is rotatably coupled to the upper side of the shankdong member 32, and the other end is pivotably formed on the rear frame of the freight vehicle. Is a door lifting means (30) consisting of a second double-acting cylinder 34 for applying a driving force to the lifting member 32 is provided with the Shanghai East.

In addition, the hydraulic drive control unit 40 is configured to drive and control the first and second double acting cylinders 22 and 34 so as to open and close the door and lift the door.

As shown in FIG. 3, the shank-dong member 32 is formed to protrude at a predetermined interval below the protruding jaw 12 formed at the lower end of the door 10 corresponding to the inside of the door opening and closing means 20. A hinge portion 32a is formed on the support bracket 14 so as to be rotatably coupled, and the door 10 is opened by the door opening and closing means 20 at an upper end portion of the hinge portion 32a. The support surface (32b) is formed in close contact with the bottom surface of the protruding jaw (12) is formed to be lifted while maintaining the plane state of the door is blocked by the rotation of the door in the process of lifting the door, the support surface (32b) On the inner side of the upper end of the shankdong member 32 close to the horizontal member 36 is connected to the left and right shankdong member 32 is formed.

The shandong copper member 32 is composed of a 'c' section steel is installed to be opened to the lower side so that the second double-acting cylinder 34 is accommodated therein.

And, the upper and lower ends of the first double-acting cylinder 22, the lower end of the shankdong member 32 and the second double-acting cylinder 34 are rotated by a fixed bracket 39, a pair of hinge plates spaced apart at regular intervals, respectively. Possibly combined.

The hydraulic drive control unit 40 may be configured as shown in Figure 4, the reference numeral 41 is an oil tank filled with hydraulic oil for mediating the transmission of the driving force while being injected and discharged into the cylinder, reference numeral 42 Denotes a hydraulic pump for sucking oil in the oil tank 41 according to the driving of the motor, and reference numeral 43 denotes a pressure regulating valve for controlling the pressure of the oil discharged to the discharge side to be discharged at a predetermined constant pressure.

In addition, reference numeral 44 is a first direction control valve for controlling the operation of the first double acting cylinder of the door opening and closing means 20, 45 is the operation of the second double acting cylinder 34 of the door lifting means 30. Each of the valves 44 and 45 is configured as a 6 / 3-way valve having six ports and three valve chambers as a second direction control valve for controlling the valves.

Further, reference numeral 46 connected to the front end of the second directional control valve 45 is a third directional control valve for controlling the operation of the second double-acting cylinder to be performed separately from the operation of the first double-acting cylinder.

On the other hand, the above-mentioned hydraulic drive control unit 40 is only one configuration example configured to enable the operation of the lifting device for loading cargo according to the present invention and can be variously applied.

The operation of the present invention as described above is as follows.

As shown in Figs. 3 and 4, when opening the door 10 at the rear of the loading box, the door is opened by reversing the first double acting cylinder 22 of the door opening / closing means 20. When the hydraulic pump 42 is operated by operating an operation switch (not shown), the pressure of the hydraulic oil is adjusted to a predetermined pressure by the pressure regulating valve 43, and the pressure is discharged to the discharge side. When an electrical signal is applied to the 'b' side of 44, the hydraulic oil is pushed in the direction in which the first double-acting cylinder 22 moves backward.

Accordingly, since the opening force is applied to the door 10 while the rods 22a of the first double-acting cylinders 22 are pulled, the door is rotated in a clockwise direction to open in the shape as shown in FIG. 5.

In addition, when the electric door is applied to the 'a' side of the first directional control valve 44 to close and close the open door 10 as described above, the first double acting cylinder 22 moves forward to protrude. The door is closed while being moved upward by the rod 22a.

On the other hand, when the door 10 is opened by the operation of the door opening and closing means 20 as described above, when the cargo is mounted on the ground to be loaded into the loading box, the electric power is supplied to the third direction control valve 46. By applying a signal to enable hydraulic oil to flow and applying an electrical signal to the 'd' side of the second directional control valve 45, the second double-acting cylinder 34 is in a reversed state and accordingly the second double-acting As the rod 34a of the cylinder 34 is introduced into the cylinder, its contracting force is transmitted to the shank moving member 32 via the rod hinge 34b, so that it is coupled to the hinge portion 32a of the shank moving member 32. Since the operation of lowering the lowered door is performed and the left and right second double acting cylinders 34 are connected to each other by the horizontal member 36, a stable lowering operation is performed.

And when the door is loaded in the state that the bottom is in contact with the ground as shown in Figure 6 and the loading of the cargo is completed to operate the rod 34a of the second double-acting cylinder 34 to move forward again The pressing force of the rod is transmitted to the shank moving member 32, and as the shank moving member rotates, the door 10 is raised as shown in FIG. 5. In this state, the load is moved into the loading box. Closing the door completes loading of the cargo.

According to the lifting device for cargo loading integrally configured in the cargo vehicle according to the present invention as described above, the door is automatically opened without manual work and at the same time the door itself is lifted in the vertical direction, so that the load of cargo in a short time Since the loading time is shortened, the loading efficiency is improved, the logistics cost is reduced, and the occurrence of safety accidents by manual labor is reduced.

In addition, the lifting device according to the present invention is because the door opening and closing means and the door lifting means are all operated by double-acting cylinders (both door opening and lifting of the cargo is made by hydraulic pressure) so that the operation time is shortened and the processing time of the cargo is shortened. It works.

In particular, when the cargo loaded in the loading box is heavy, a separate loading device such as a forklift and a driver for operating the loading device are not required, thereby reducing the loading cost, and the loading device is applied to the cargo vehicle during the loading process of the cargo. It is a very useful design that can prevent damage or breakage.

Claims (3)

In the lifting device for cargo loading configured at the rear of the cargo vehicle having a door that is configured to be rotatable in the vertical direction to the rear of the loading box to open and close, Door opening and closing means for opening and closing the door, comprising a pair of first double acting cylinders, one end of which is rotatably coupled to both lower portions of the door, and the other end of which is rotatably coupled on the rear frame of the freight vehicle; A pair of shank-dong members that are rotatably coupled to one end of both sides of the door corresponding to a position close to the first double-acting cylinder, and the other end of which is rotatably coupled to the rear frame of the freight vehicle. A door lifting means composed of a second double acting cylinder configured to pivotally engage one end of the upper and lower ends of the shank moving member and the other end of the shank moving member on the rear frame of the freight vehicle to apply a lifting driving force to the shank moving member; A cargo integrated with a cargo vehicle, comprising a hydraulic drive control unit including a hydraulic pump and a direction control valve to drive and control the first and second double acting cylinders to open and close the door and to lift the door. Lifting device for loading. The method of claim 1, The shank moving member has a hinge portion formed to be rotatably coupled to a support bracket protruding at a predetermined interval from a lower portion of the protruding jaw formed at a lower end of the door corresponding to the inside of the door opening and closing means, and an upper end portion at which the hinge portion is formed. In the door is opened by the door opening and closing means is formed to support the support surface in close contact with the bottom surface of the protruding jaw is configured to be lifted while maintaining the plane state is blocked by the rotation of the door in the process of lifting the door, A lifting device for cargo loading integrally formed with a freight vehicle, characterized in that a horizontal member connected to the left and right shandong members is formed on the upper inner surface of the shandong member close to the support surface. The method according to claim 1 or 2, The shank moving member is a cargo lifting device integrated with a cargo vehicle, characterized in that consisting of the 'c' section formed to be open to the lower side to accommodate the second double-acting cylinder therein.