KR102284153B1 - Cargo handling apparatus - Google Patents

Abstract

The present invention relates to a cargo handling device. This is a first transfer unit that has side walls facing each other and is installed on one side wall of the loading space that is opened to the outside through the inlet and outputs a horizontal transfer force, is installed in close contact with the other side wall facing the one wall and the first transfer unit a second conveying unit having the same structure and outputting a horizontal conveying force; a conveying unit including a connecting shaft connecting the first conveying unit and the second conveying unit to simultaneously operate the first conveying unit and the second conveying unit; a torque input unit exposed to the outside of the loading space and applying a rotational force applied from the outside to the conveying unit to cause the first and second conveying units to output a horizontal conveying force; It is linked to the first and second transfer units, and receives the horizontal transfer force and linearly moves within the loading space and includes a carrier unit for moving cargo to be unloaded.
The cargo loading and unloading device of the present invention made as described above does not increase the weight of the loading box or container due to its light weight and is installed in close contact with the inner side wall of the loading space, so that the cargo does not invade the space to be used. does not affect In addition, by using the tensile force of the traction wire to move the cargo in the loading box, the operator does not need to directly enter the loading box or container, so that unloading can be completed in a short time.

Description

Cargo handling apparatus

The present invention relates to a cargo loading and unloading device, and more particularly, to a cargo loading and unloading device capable of unloading or loading cargoes loaded in various loading boxes including containers more easily and quickly. will be.

Various types of cargo vehicles are being operated to safely and efficiently transport various cargoes. Such trucks include a general open cargo truck, a wing body, a built-in tower mainly used for delivery, an extop operated in a moving center, a refrigeration tower, a container truck, and the like.

Among the various types of freight cars, the loading box of the top car takes the form of a hexahedron in which a door is installed at the rear or side thereof. In the case of containers loaded on container trucks, most of them have doors installed at the rear. Such a loading box has several advantages, such as being able to protect the cargo from wind and rain, or to prevent the loss of the cargo.

However, in the case of the loading box or container of such a vehicle, there is trouble in loading and unloading the cargo. For example, in order to load or unload cargo, the operator must move to the deep inside of the loading box. In particular, in the case of a container extending long in the longitudinal direction, the movement of the operator becomes long and the unloading itself takes a lot of time. Moreover, when the weight of the cargo itself is so heavy that the operator cannot carry it, a forklift must be used, which further increases the above-mentioned inconvenience and causes a problem of increasing the transportation cost.

In order to solve this inconvenience, by the inventor of the present application, a cargo push-out device inside a container (Korean Patent Publication No. 10-1960731) has been proposed. The push-out device is a hydraulic equipment installed in a container for cargo transportation, and is located on the outer surface of the container and includes a connection port for receiving hydraulic pressure provided from the outside, a hydraulic hose connected to the connection port and extending into the container, and a hydraulic hose It has a basic structure of an actuator operating by receiving hydraulic pressure transmitted through and a pressure transfer unit that pressurizes and transfers cargo to the outside of the container in conjunction with the operation of the actuator.

However, the push-out device has a telescoping link part operated by hydraulic pressure, but the telescoping link part itself has a certain volume, which has a problem in that it occupies some of the internal volume of the container. In particular, the heavy weight increases the weight of the entire container, thereby increasing the transportation cost, and has disadvantages in that the link rod is broken or bent as it is used for a long time.

Domestic Registered Patent Publication No. 10-1960731 (Container internal cargo push-out device) Domestic Patent Publication No. 10-1532958 (Container loading and unloading equipment) Domestic Registered Utility Model Publication No. 20-0188192 (container loading and unloading auxiliary device)

The present invention was created to solve the above problems, and it is an object of the present invention to provide a cargo loading and unloading device that hardly increases the weight of a loading box or a container, and does not affect the maximum loading of cargo.

In addition, an object of the present invention is to provide a cargo unloading device that enables an operator to complete loading and unloading within a short time because there is no need to directly enter and exit the loading box or container.

The cargo loading and unloading device of the present invention as a means of solving the problems for achieving the above object is installed on one wall of the loading space having mutually facing sidewalls and opened to the outside through the inlet portion, the first transfer unit for outputting a horizontal transfer force; A second transfer unit that is installed in close contact with the other side wall facing the one wall and has the same structure as the first transfer unit and outputs a horizontal transfer force, and connects the first transfer unit and the second transfer unit to the first transfer unit and the second transfer unit a transfer unit including a connecting shaft that allows the unit to operate simultaneously; a torque input unit exposed to the outside of the loading space and applying a rotational force applied from the outside to the conveying unit to cause the first and second conveying units to output a horizontal conveying force; It is linked to the first and second transfer units, and receives the horizontal transfer force and linearly moves within the loading space and includes a carrier unit for moving cargo to be unloaded.

In addition, the first transfer unit and the second transfer unit includes a plurality of pulleys and a traction wire that circulates in a state supported by the pulleys.

In addition, the pulley portion of the first transfer unit and the second transfer unit; A lower double pulley part connected to each other through the connecting shaft, an upper double pulley part installed in a vertical upper part of the lower double pulley part, a lower single pulley part disposed close to the inlet part and formed horizontally with the lower double pulley part, the lower side It has an upper single pulley part located in the vertical upper part of the single pulley part.

In addition, the upper double pulley part and the lower double pulley part; a double pulley having two pulley surfaces, a concealing cover that covers the double pulley and is fixed to a side wall, and a pulley shaft rotatably supporting the double pulley, an upper single pulley part and a lower single pulley part; A single pulley having a single pulley surface, a concealing cover that covers the single pulley and is fixed to a side wall, and a pulley shaft rotatably supporting the single pulley, wherein the traction wire includes; After winding the upper single pulley starting from each upper double pulley, passing through the upper double pulley and the lower double pulley in turn, winding the lower single pulley, passing through the lower double pulley and the upper double pulley in turn, but the upper double pulley It circulates along a path intersecting between the pulley part and the lower double pulley part.

In addition, a tension maintaining part for maintaining the tension of the traction wire is provided between the upper double pulley part and the lower double pulley part.

In addition, the tension maintaining unit; A cover that covers the intersection of the traction wire and is fixed to the side wall, a spring case that is horizontally fixed to the cover, a spring installed in the spring case, and a part of it is inserted into the spring case A pair of roll pushers protruding outside the spring case and elastically supported by a spring, and a tension roll supported so as to be rotatably supported by each of the roll pushers in a direction away from the traction wire.

In addition, the carrier unit; A toe connector coupled to a traction wire spanning between the first and second transfer parts, between the upper double pulley part and the upper single pulley part, between the lower double pulley part and the lower single pulley part, and the toeing connector linked to each of the toeing connectors and a cargo transfer member for pushing and moving the cargo by following the .

In addition, the toeing connector; A connecting block providing a wire penetrating part through which the traction wire passes, a central space communicating with the wire penetrating part, and a connection block installed in the central space part and in close contact with the traction wire when the traction wire moves in one direction to connect the transport force of the traction wire Includes a wedge to pass to the block.

In addition, the upper portion of the central space is formed with a reaction surface inclined in one direction, the wedge; A toothed portion is formed on the bottom surface of the main body and is in contact with the traction wire through the toothed portion, and is located on the upper portion of the main body, is in contact with the reaction surface when the traction wire moves in one direction, and a wedge surface spaced apart from the reaction surface when the traction wire moves in the opposite direction have

In addition, the toeing connector takes a form in which two toeing connectors having opposite installation directions are connected in series.

In addition, the first transfer unit and the second transfer unit; It includes a plurality of sprocket portions and a chain circulating while supported by the sprocket portion.

In addition, the first transfer unit and the sprocket portion of the second transfer unit; A lower double sprocket part connected to each other through the connecting shaft, an upper double sprocket part installed vertically above the lower double sprocket part, a lower single sprocket part disposed close to the inlet part and parallel to the lower double sprocket part, the lower side It has an upper single sprocket part located in the vertical upper part of the single pulley part.

In addition, the upper double sprocket portion and the lower double sprocket portion; a double sprocket having two sprockets, comprising: an upper single sprocket part and a lower single sprocket part; a single sprocket made of one sprocket, and a concealing cover that covers the single sprocket and is fixed to a side wall, wherein the chain includes; A first chain connecting each of the upper double pulley parts and the upper single pulley part and a second chain connecting the upper double sprocket part and the lower double sprocket part are provided.

In addition, the carrier portion; The first and second transfer units include a toeing connector connected to the first chain, and a cargo transfer member linked to each of the toeing connectors and driven by the toeing connector to push and move the cargo.

The cargo loading and unloading device of the present invention made as described above does not increase the weight of the loading box or container due to its light weight, and is installed in close contact with the inner side wall of the loading space, so that the cargo does not invade the space to be used. does not affect

In addition, by using the tensile force of the traction wire to move the cargo in the loading box, the operator does not need to directly enter the loading box or container, so that unloading can be completed in a short time.

1 is a partially enlarged cutaway perspective view for explaining the overall configuration of a cargo handling device according to an embodiment of the present invention.
2 is a view for explaining the wiring structure and operation of the traction wire shown in FIG.
3 is a view showing the structure of the double pulley of FIG.
4 is a cross-sectional view taken along line AA of FIG. 1 .
FIG. 5 is a view for explaining the structure and operation of the tension maintaining unit shown in FIG. 1 .
6 and 7 are diagrams for explaining a driving method of the unloading apparatus shown in FIG. 1 .
8A and 8B are perspective views illustrating a part of the carrier part shown in FIG. 1 .
FIG. 9 is a cross-sectional view illustrating an internal structure of the toe connector of FIG. 1 .
Fig. 10 is a perspective view of the wedge of Fig. 9;
11 is a cross-sectional view taken along line BB of FIG. 9 .
12 is a side view of another type of toe connector applicable to the cargo handling device shown in FIG. 1 .
13 and 14 are views for explaining the operation of the cargo handling device according to an embodiment of the present invention.
15 is a perspective view for explaining a modified example of the cargo handling device according to an embodiment of the present invention.
16 is a side view illustrating an unloading method using the loading and unloading device shown in FIG. 15 .

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

Basically, the cargo loading and unloading device of the present invention can be installed in the cargo compartment of a general truck as well as a loading box and a cargo container of a top vehicle, and enables faster and more efficient loading and unloading of cargo.

The basic configuration of the cargo loading and unloading apparatus of the present invention is a first transfer unit that has side walls facing each other and is installed on one wall of a loading space that is opened to the outside through an inlet and outputs a horizontal transfer force, and faces the one wall A second transfer unit that is installed in close contact with the other side wall and has the same structure as the first transfer unit and outputs a horizontal transfer force, a connection that connects the first transfer unit and the second transfer unit so that the first transfer unit and the second transfer unit operate at the same time a transfer unit including a shaft; a torque input unit exposed to the outside of the loading space and applying a rotational force applied from the outside to the conveying unit to cause the first and second conveying units to output a horizontal conveying force; It is linked to the first and second transfer units, and receives the horizontal transfer force and linearly moves within the loading space and includes a carrier unit for moving cargo to be unloaded.

1 is a partially enlarged, cut-away perspective view for explaining the overall configuration of a cargo handling device 20 according to an embodiment of the present invention, and FIG. 2 is a view for explaining the wiring structure and operation of the traction wire shown in FIG. am. In FIG. 2 , the concealing cover is omitted for convenience of description. 3 is a view showing the structure of the double pulley of FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1 .

As shown, the cargo handling device 20 according to the present embodiment includes a transfer unit, a torque input unit 15 , and a carrier unit 50 . In addition, the transfer unit includes a connecting shaft 36 connecting the first and second transfer units 22A and 22B and the first and second transfer units 22A and 22B.

The first and second transfer units 22A and 22B have the same configuration and size, and the first transfer unit 22A is installed on one wall of the loading space 11 and the second transfer unit 22B is installed on the other side wall of the carrier. The part 50 is moved linearly. That is, the carrier part 50 is moved from the rear wall 13 to the inlet part 16 side, or from the inlet part 16 to the rear wall 13 side.

The loading space 11 is the interior of the container 10 in the form of a hexahedron having a side wall 12, a bottom part 14, a rear wall 13, a roof (not shown), and a door (not shown) facing each other. As a space, it accommodates cargo (FIG. 13A). The door is installed at the inlet 16 and opens or closes the loading space 11 .

The cargo loading and unloading device of the present embodiment, as long as only the sidewalls 12 facing each other are provided, it can be applied to a top car, a loading box of a wing body, or a luggage compartment of a general truck.

First, the first transfer part 22A is disposed close to the lower double pulley part 30B, the upper double pulley part 30A installed on the vertical upper part of the lower double pulley part, and the inlet part 16, and the lower double pulley part 30B ) and a lower single pulley part 30D, which is horizontal, and an upper single pulley part 30C positioned vertically above the lower single pulley part 30D.

The lower double pulley unit 30B is directly connected to the extension shaft 15a of the torque input unit 15 and rotates by receiving a rotation torque provided from the outside. The lower double pulley part 30B is capable of rotating the double pulley 32 having the first and second pulley surfaces 32b and 32c, the concealing cover 31 covering the double pulley 32, and the double pulley 32 rotatable. It is composed of a pulley shaft (32a) to support.

As shown in FIG. 3 , the widths of the first and second pulley surfaces 32b and 32c of the double pulley 32 are different. In other words, the first pulley surface (32b) has a width that can accommodate only one traction wire, the second pulley surface (32c) is to have a width that can accommodate two rows of traction wires. The reason for forming the second pulley surface 32c wide is to prevent friction between the traction wire coming into the second pulley surface 32c and the traction wire coming out from the second pulley surface 32c.

On the other hand, the concealing cover 31 protects the double pulley 32 as a member fixed to the side wall 12 by welding in a state in which the double pulley 32 is covered. For example, the double pulley 32 is prevented from being pressed by the cargo.

Also, the concealing cover 31 is formed with a concealing cover passage 31a and a through slit 31b. The concealed cover passage 31a is a through hole that is opened in the lateral direction, and allows the traction wire 38 to pass therethrough. In addition, the through slit 31b passes the traction wire 38 as a slit-type through hole opened in the vertical direction.

The pulley shaft 32a passes through the central portion of the double pulley 32 , and one end thereof is supported by the concealing cover 31 , and the other end is supported by the side wall 12 . In addition, a connecting shaft 36 is connected to one end of the pulley shaft 32a. The connecting shaft 36 is a transmission shaft extending horizontally toward the lower double pulley portion 30B of the second transfer unit 22B, and transmits the rotational force input through the torque input unit 15 to the second transfer unit 22B.

The upper double pulley part 30A is disposed on the vertical upper part of the lower double pulley part 30B, and similarly to the lower double pulley part 30B, the double pulley 32, the concealing cover 31, and the pulley shaft 32a ) is made of

The structure of the upper double pulley part 30A is the same as that of the lower double pulley part 30B, except that the through slit 31b faces downward.

As shown in FIG. 4 , the upper single pulley part 30C includes a single pulley 34 , a pulley shaft 34a and a concealing cover 31 . The single pulley 34 is a pulley in which only one pulley surface through which the wire passes is formed. In addition, the concealing cover 31 serves to receive and protect the single pulley 34, and has two concealed cover passages 31a open to the side. The pulley shaft (34a) passes through the center of the single pulley (34), one end is supported on the side wall (12) and the other end is supported on the concealing cover (31).

The lower single pulley part 30D has the same structure as the upper single pulley part 30C, and a description thereof will be omitted.

The traction wire 38 included in the first transfer unit 22A is a tensile wire made of steel wire, and includes an upper single pulley part 30C, an upper double pulley part 30A, a lower double pulley part 30B, and a lower single pulley part 30B. It circulates along the path connecting the pulley part 30D.

That is, as the double pulley 32 of the lower double pulley unit 30B is rotated through the torque input unit 15 , it is rotated by receiving a feeding force from the double pulley 32 . While the traction wire 38 is being transferred, the single pulley 34 of the upper single pulley part 30C and the lower single pulley part 30D, and the double pulley 32 of the upper double pulley part 30A are idling and only Guide the transport of the traction wire.

The wiring method of the traction wire 38 is as follows.

That is, the traction wire 38 starts from the upper double pulley 32 and winds the upper single pulley 34 and then makes a U-turn, passes the upper double pulley 32 and the lower double pulley 32 downward in sequence, and the lower side After winding the single pulley 34, it circulates the path passing upward through the lower double pulley and the upper double pulley. At this time, the traction wire crosses in an X-shape between the upper double pulley part 30A and the lower double pulley part 30B.

Since the traction wire 38 has the above-described path, the traction wire 38 forms four rows on the side wall 12 . The carrier part 50 to be described later is connected to the traction wire of the inner second row among the traction wires of the 4 rows. The traction wire 38 of the inner two rows moves linearly in the z direction when the lower double pulley 32 is rotated in the arrow r direction. When the direction of rotation of the double pulley 32 is reversed, it is natural that the traction wire also moves linearly in the opposite direction.

On the other hand, the second transfer part 22B, like the first transfer part 22A, the upper double pulley part 30A, the lower double pulley part 30B, the upper single pulley part 30C, the lower single pulley part 30D) , including a traction wire (38). The second transfer unit 22B having such a structure has the same structure and size as the first transfer unit 22A and operates simultaneously.

In addition, the torque input unit is also located on the outer side of the lower double pulley portion 30B of the second transfer unit 22B, that is, on the outer side of the container 10 . The torque input unit 15 is installed one at each side of the container.

FIG. 5 is a view for explaining the structure and operation of the tension maintaining unit shown in FIG. 1 .

The first transfer unit 22A and the second transfer unit 22B are provided with a tension maintaining unit 40, respectively. The tension maintaining part 40 is installed between the upper double pulley part 30A and the lower double pulley part 30B, and keeps the tension of each traction wire 38 constant to be in a taut state.

The tension holding part 40 has a cover 41 , an upper holding part 40A and a lower holding part 40B which are installed on the inner side of the cover 41 up and down.

The cover 41 is a steel plate that covers the intersection where the traction wire 38 intersects in an X-shape. The traction wire 38 going back and forth between the upper double pulley part 30A and the lower double pulley part 30B passes between the cover 41 and the side wall 12 .

The upper and lower holding parts 40A and 40B are a spring case 43a horizontally fixed to the inner surface of the cover 41, a spring 43b installed inside the spring case 43a, and a spring case 43a. It includes two roll pushers 43c partially inserted and exposed to the outside, and a tension roll 42 rotatably connected to each roll pusher 43c. The upper holding part 40A is mounted on the upper side of the cover 41, and the lower holding part 40B is mounted on the vertical lower part of the upper holding part 40A.

In particular, the upper holding part 40A is located above the crossing point 38a of the traction wire 38, and the lower holding part 40B is located in the lower part of the crossing point 38a, and the traction wire 38 is elastically pressed in a direction away from it. do. That is, the tension roll 42 receiving the elasticity of the spring 43b spreads the traction wire 38 in the direction of the arrow e. By this action, the traction wire 38 is always maintained in a taut state.

6 and 7 are diagrams for explaining a driving method of the unloading apparatus shown in FIG. 1 . Driving the unloading device means loading and unloading the cargo by moving the carrier part 50 in a straight line. In order to drive the cargo handling device, the extension shaft 15a directly connected to the pulley shaft 32a must be axially rotated.

As shown in FIG. 6 , the rotation torque can be input to the extension shaft 15a using the crank arm 61 . The crank arm 61 is a tool composed of a handle 61a, an extension arm 61b, and a torsion bar 61c. When the handle 61a is rotated while the torsion bar 61c is inserted into the angular groove 15b of the extension shaft 15a, the resulting rotational moment is transmitted to the extension shaft 15a so that the extension shaft 15a rotates. do. This crank arm serves as a torque input unit for causing the first and second transfer units 22A and 22B to output a horizontal transfer force.

While the crank arm 61 of FIG. 6 is to manually operate the unloading device, FIG. 7 is to operate it by power.

Referring to FIG. 7 , the power generating unit 65 and the torque transmitting unit 63 may be applied to rotate the extended shaft 15a of the torque input unit 15 . The power generating unit 65 includes an electric motor or a hydraulic motor.

The torque transmitting unit 63 serves to receive the rotational torque output from the power generating unit and transmit it to the extended shaft 15a. As the power transmission method of the torque transmission unit 63, a gear method, a chain method, etc. may be applied. The torque transfer unit 63 and the power generating unit 65 serve as a torque input unit for causing the first and second transfer units to output horizontal transfer force.

On the other hand, the carrier part 50, the cargo transport member in the form of a square plate, a connecting wire 55 connected to the four corners of the cargo transport member, and a towing connector for fixing the connecting wire 55 to the traction wire 38 . (70).

The cargo transport member is linked to the toeing connector 70 at four places and serves to move the cargo A while being dragged by the towing connector when the towing connector moves along the towing wire 38 . As long as it can play this role, the cargo transfer member can be implemented in various ways, and may take the form of the wire mesh 51 or the transfer plate 53 shown in FIGS. 8A and 8B .

8A and 8B are perspective views illustrating an example of the cargo transfer member.

The cargo transport member shown in FIG. 8A is a wire mesh 51 . The wire mesh 51 takes the form of a square sheet made of a wire mesh, and has connecting rings 51a at four corners. A connecting line 55 is connected to the connecting ring 51a.

The cargo transfer member of FIG. 8b is a transfer plate in the form of a simple square plate. Connection rings 53a are also provided at the four corners of the transfer plate 53 to fix the connection wire 55 .

9 is a cross-sectional view illustrating the internal structure of the toeing connector 70, and FIG. 10 is a perspective view of the wedge 73 shown in FIG. 11 is a cross-sectional view taken along line B-B of FIG. 9 .

As shown, the toe connector 70 is composed of a hollow connection block 71 and a wedge 73 that is movably embedded in the connection block 71 .

The connection block 71 is a wire through portion 71d through which the traction wire 38 passes, a central space portion 71c positioned above the wire through portion 71d, and an upper portion of the central space portion 71c. It consists of the formed upper space (71a).

The wire through portion 71d is open front and back in the longitudinal direction of the wire, but the central space portion 71c and the upper space portion 71a have a closed structure in the front and rear except that they are opened toward the wire through portion 71d. .

In addition, the ceiling surface of the upper space portion (71a) forms a reaction surface (71e) inclined downward toward the front. The reaction surface (71e) is a portion pressed in close contact with the wedge surface portion (73d) when the traction wire 38 moves in the arrow p direction.

Support jaws 71b are formed on both sides of the upper space portion 71a. The support jaw (71b) serves to hang and support the locking projection (73a) of the wedge (73). The wedge 73 is movable in the direction of the arrow t or the opposite direction while being caught in the upper space portion 71a. When the wedge 73 moves in the arrow t direction, it goes up and down in the vertical direction as well.

The wedge 73 includes a main body 73b and a locking projection 73a. The main body 73b is a block-shaped member accommodated in the central space 71c, and has a toothed portion 73c on its bottom surface. The toothed portion (73c) prevents the wedge (73) from slipping while biting the traction wire (38).

The locking protrusion 73a is a plate-shaped member supported by being caught by the support jaw 71b, and is in contact with the reaction surface 71e when the wedge 73 is pulled in the arrow t direction. The locking projection (73a) is spaced apart from the reaction surface (71e) when the traction wire moves in the opposite direction to the arrow p direction.

Reference numeral 75 denotes an eye bolt. The eye bolt 75 is a part on which the hook 55a provided at the end of the connecting line 55 is hooked.

That is, the toeing connector 70 having the above configuration has a structure that bites the tensile wire when the traction wire 38 moves in one direction, for example, the arrow p direction, and moves together with the traction wire 38 . That is, when the traction wire 38 moves in one direction, it is possible to move the cargo through the wire mesh 51 . When the traction wire 38 moves in the opposite direction, since the wedge 73 opens from the reaction surface, the traction force of the wire cannot be transmitted to the cargo. The toe connector 70 is, so to speak, of a one-way type. That is, it has directionality.

12 is a side view of the towing connector 80 of another type applicable to the cargo handling device 20 shown in FIG. 1 . The toeing connector 80 shown in FIG. 12 is of a bidirectional type.

The bidirectional towing connector 80 is configured by connecting the two towing connectors 70 shown in FIG. 9 in different directions. That is, the front end of the toeing connector 70 is fixed by a method such as welding.

The toe connector 80 having the above configuration includes a twin block 81 that provides two central space portions 71c and an upper space portion 71a partitioned from each other, and is built in each central space portion 71c. It is composed of a wedge (73). Since the two wedges are built-in in this way, the toe connector 80 can always bite and fix the traction wire regardless of the direction of the traction wire 38 .

13 and 14 are side views for explaining the operation of the cargo handling device 30 according to an embodiment of the present invention, wherein the cargo A accommodated in the loading space 11 is moved to the outside of the container 10 shows how to do it.

13, in order to discharge the cargo A accommodated in the loading space 11 to the outside, first using the crank arm 61 or the torque transmission unit 63, the torque input unit ( 15) by rotating the extension shaft 15a to move the carrier part 50 in the direction of the arrow F.

As described above, when the extension shaft 15a is rotated, the traction wire 38 can be linearly moved in the direction of the arrow m, so the carrier part 50 coupled with the traction wire 38 moves in the same direction and The cargo can be moved linearly toward the inlet 16 .

14 shows a state in which the carrier part 50 transports the cargo A to the inlet part 16 . After the cargo (A) reaches the inlet (16), the operator handles the cargo (A) and unloads.

15 is a perspective view for explaining a modified example of the cargo handling device 20 according to an embodiment of the present invention, and FIG. 16 is a side view illustrating an unloading method using the cargo handling device shown in FIG. 15 .

As shown, the double sprocket 82 and the single sprocket 83 in place of the double pulley 32 and the single pulley 43 described above, instead of the traction wire 38, the first and second chains 84a, 84b) can be applied. The roles and functions of the double sprocket 83 and the single sprocket 83 are the same as those of the double pulley 32 and the single pulley 43 . In addition, the first and second chains (84a, 84b) also play the same role as the traction wire (38).

The first transfer part 22A is disposed adjacent to the lower double sprocket part 90B, the upper double sprocket part 90A installed in the vertical upper part of the lower double sprocket part, and the inlet part 16, and includes the lower double sprocket part 90B and the lower double sprocket part 90B. It has a horizontal lower single sprocket part 90D and an upper single sprocket part 90C located vertically above the lower single sprocket part 90D.

The lower double sprocket part 90B is directly connected to the extension shaft 15a of the torque input part 15 described above, and rotates by receiving a rotation torque provided from the outside. The lower double sprocket portion 90B includes a double sprocket 82 in which two sprockets fixed to each other form a pair, and a concealing cover 31 covering the double sprocket 82 . The double sprocket 82 is rotatably supported on the concealing cover 31 and the side wall. The structure of the upper double sprocket portion 90B is the same as that of the lower double sprocket portion 90A.

In addition, the upper single sprocket portion 90C includes a single sprocket 83 and a concealing cover 31 . The single sprocket 83 supports the first chain 84a as one sprocket. Also, the concealing cover 31 serves to accommodate and protect the single sprocket 83 . The rotating shaft of the single sprocket 83 is supported by the concealing cover 31 and the side wall 12 . The lower single sprocket portion 90D has the same structure as the upper single sprocket portion 90C.

The first chain 84a connects the upper double sprocket part 90A and the upper single sprocket part 90D, and the lower double sprocket part 90B and the lower single sprocket part 90D. In addition, the second chain 84b connects the upper double sprocket portion 90A and the lower double sprocket portion 90B. Since the double sprocket 82 is applied to the upper and lower double sprocket portions 90A and 90B, the above connection is possible.

On the other hand, the second transfer unit 22B is the same as the first transfer unit 22A, and is disposed opposite to the loading space 11 therebetween. As mentioned above, the first and second transfer units 22A and 22B are connected through the connecting shaft 36 and operate simultaneously.

The carrier part 50 includes a toe connector 85 connected to the first chain 84a with a pin 85a, and a toe connector 85 linked to each toe connector 85 of the first and second transfer parts. and a connecting wire 55 connecting the wire mesh 51 or the transfer plate 53 .

16, in order to discharge the cargo A accommodated in the loading space 11 to the outside, the extension shaft 15a of the torque input unit 15 is rotated to rotate the carrier part 50 ) is moved in the direction of the arrow F.

When the extension shaft 15a is rotated, the first chain 84a can be moved linearly in the direction of the arrow m, so that the carrier part 50 coupled to the first chain 84a moves in the same direction and moves the cargo in the inlet. It can be moved linearly to the part 16 side.

As mentioned above, although the present invention has been described in detail through specific embodiments, the present invention is not limited to the above embodiments, and various modifications are possible by those of ordinary skill within the scope of the technical spirit of the present invention.

10: container 11: loading space 12: side wall
13: rear wall 14: bottom 15: torque input unit
15a: extension shaft 15b: each groove 16: inlet part
20: unloading device 22A: first transfer unit 22B: second transfer unit
30A: Upper double pulley part 30B: Lower double pulley part 30C: Upper single pulley part
30D: lower single pulley part 31: concealed cover 31a: concealed cover passage
31b: through slit 32: double pulley 32a: pulley shaft
32b: 1st pulley 32c: 2nd pulley 34: single pulley
34a: pulley shaft 36: connecting shaft 38: traction wire
38a: intersection 40: tension maintenance part 40A: upper part maintenance part
40B: lower holding part 41: cover 42: tension roll
43: elastic pressing part 43a: spring case 43b: spring
43c: roll pusher 50: carrier part 51: wire mesh
51a: connecting ring 53: transfer plate 55: connecting line
55a: hook 61: crank arm 61a: handle
61b: extended arm 61c: torsion bar 63: torque transmission unit
65: power generation unit 70: toeing connector 71: connection block
71a: upper space 71b: support jaw 71c: central space
71d: wire through portion 71e: reaction surface 73: wedge
73a: locking projection 73b: body 73c: toothed part
73d: wedge surface part 75: eye bolt 80: toeing connector
81: twin block 82: double sprocket 83: single sprocket
84a: 1st chain 84b: 2nd chain 85: Toeing connector
85a: pin
90A: Upper double sprocket part 90B: Lower double sprocket part
90C: Upper single sprocket part 90D: Lower single sprocket part

Claims (14)

A first transfer unit that has side walls facing each other and is installed on one wall of the loading space that is opened to the outside through the inlet and outputs a horizontal transfer force, is installed in close contact with the other side wall facing the one wall and is the same as the first transfer unit a transfer unit including a second transfer unit having a structure and outputting a horizontal transfer force, and a connecting shaft connecting the first transfer unit and the second transfer unit to simultaneously operate the first transfer unit and the second transfer unit;
a torque input unit exposed to the outside of the loading space and applying a rotational force applied from the outside to the conveying unit to cause the first and second conveying units to output a horizontal conveying force;
and a carrier part linked to the first and second transfer units, receiving the horizontal transfer force, and moving linearly within the loading space to move the cargo to be unloaded;
The first transfer unit and the second transfer unit include a plurality of pulleys and a traction wire that circulates in a state supported by the pulleys,
a pulley portion of the first transfer unit and the second transfer unit;
A lower double pulley part connected to each other through the connecting shaft, an upper double pulley part installed in a vertical upper part of the lower double pulley part, a lower single pulley part disposed close to the inlet part and formed horizontally with the lower double pulley part, the lower side While having an upper single pulley part located in the vertical upper part of the single pulley part,
The upper double pulley part and the lower double pulley part;
A double pulley having two pulley surfaces, a concealing cover that covers the double pulley and is fixed to a side wall, and a pulley shaft rotatably supporting the double pulley,
an upper single pulley part and a lower single pulley part;
A single pulley having a single pulley surface, a concealing cover that covers the single pulley and is fixed to a side wall, and a pulley shaft rotatably supporting the single pulley,
The traction wire;
After winding the upper single pulley starting from each upper double pulley, passing through the upper double pulley and the lower double pulley in turn, winding the lower single pulley, passing through the lower double pulley and the upper double pulley in turn, but the upper double pulley A cargo handling device that circulates along a path intersecting between the pulley part and the lower double pulley part. delete delete delete According to claim 1,
A cargo handling device provided with a tension maintaining part for maintaining the tension of the traction wire between the upper double pulley part and the lower double pulley part. 6. The method of claim 5,
The tension maintaining unit;
A cover that covers the intersection of the traction wire and is fixed to the side wall;
a spring case fixed horizontally to the cover;
a spring installed inside the spring case;
A pair of roll pushers which protrude to the outside of the spring case in a state of being fitted inside the spring case, and elastically supported by the spring;
Cargo unloading device including a tension roll supported to be rotatably supported by each of the roll pushers, and supporting the traction wire in a direction away from it. According to claim 1,
the carrier part;
A toe connector coupled to a traction wire spanning between the first and second transfer units, the upper double pulley part and the upper single pulley part, and between the lower double pulley part and the lower single pulley part;
A cargo loading and unloading device linked to each of the towing connectors and having a cargo transfer member for pushing and moving the cargo by following the toeing connector. 8. The method of claim 7,
The toe connector;
A wire through-port through which the traction wire passes, and a connection block providing a central space communicating with the wire through-port;
A cargo unloading device including a wedge installed in the central space and in close contact with the traction wire when the traction wire moves in one direction to transmit the transport force of the traction wire to the connection block. 9. The method of claim 8,
A reaction surface inclined in one direction is formed on the upper portion of the central space,
The wedge is;
A body having a toothed portion formed on its bottom surface and in contact with the traction wire through the toothed portion,
A cargo handling device located on the upper portion of the main body, in contact with the reaction surface when the traction wire moves in one direction, and having a wedge surface portion spaced apart from the reaction surface when the traction wire moves in the opposite direction. 10. The method of claim 9,
The toe connector is
A cargo handling device in the form of a series connection of two toeing connectors with opposite installation directions. According to claim 1,
The first transfer unit and the second transfer unit;
A cargo loading and unloading device comprising a plurality of sprockets and a chain circulating while supported by the sprockets. 12. The method of claim 11,
a sprocket portion of the first transfer unit and the second transfer unit;
A lower double sprocket part connected to each other through the connecting shaft, an upper double sprocket part installed vertically above the lower double sprocket part, a lower single sprocket part disposed close to the inlet part and parallel to the lower double sprocket part, the lower side A cargo handling device having an upper single sprocket portion positioned vertically above the single sprocket portion. 13. The method of claim 12,
the upper double sprocket part and the lower double sprocket part;
A double sprocket having two sprockets, comprising a concealing cover that covers the double sprocket and is fixed to a side wall,
an upper single sprocket part and a lower single sprocket part;
A single sprocket made of one sprocket, and a concealing cover that covers the single sprocket and is fixed to a side wall,
the chain;
a first chain connecting each upper double pulley part and the upper single pulley part;
A cargo loading and unloading apparatus having a second chain connecting the upper double sprocket part and the lower double sprocket part. 14. The method of claim 13,
the carrier part;
A toe connector connected to the first chain of the first and second transfer units, and
A cargo loading and unloading device linked to each of the towing connectors and having a cargo transfer member for pushing and moving the cargo by following the toeing connector.

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