KR20180101653A - Barge with loading space of cars - Google Patents

Abstract

The present invention relates to a barge usually used for marine transportation, in which a cargo is loaded on a deck of a hull of a pontoon shape, and the cargo is towed by other ship together with the hull. More specifically, the deck of the hull is provided with a vehicle loading space having vehicle securing members, as well as a cargo loading space, and the vehicle loading space and the cargo loading space are divided at a proper area ratio along a longitudinal direction of the hull. The vehicle loading space is provided with a cargo house having a house door for vehicles, so that the vehicles loaded in the space are not influenced by external environments at marine transportation. The vehicles usually transported by a car ferry or a passenger ship can be transported by the barge, on which the vehicles and various cargoes are loaded, thereby inexpensively and safely transporting the vehicles and thus minimizing a financial load of residents often traveling between an island and an inland or tourists. The application of the barge limited to cargo transportation only is widely expanded to increase the commercial value of use thereof. If necessary, the length of the cargo house for the vehicles is easily decreased so that a part of the vehicle loading space can be used as the cargo loading space, thereby effectively distributing the limited space of the hull depending upon the loading amounts of the cargos and the vehicles to be transported.

Description

Barge with loading space of vehicles.

The present invention is characterized in that a vehicle loading space provided with a vehicle vehicle securing means on a hull deck of a barge is disposed along with a cargo loading space and the car loading space and the cargo loading space are divided by a suitable area ratio in the longitudinal direction of the hull, A cargo house having a house door for a vehicle access is provided in the vehicle loading space so that the car loaded in the space is not substantially influenced by the external environment during the sea transportation, The present invention relates to a barge designed to allow a vehicle to be loaded on a deck of a barge, which is a non-self-propelled ship, together with various cargoes for safe transportation at a lower transportation cost.

In general, barges are used for transporting cargoes in waters such as lakes, rivers or canals, including waters such as ports and inland waters, or for loading and unloading cargo from large vessels that are difficult to navigate in ports It is also used to carry out various operations on a farm or a marine structure by mounting specific equipment, or to install and maintain a farm or a marine structure.

Such a barge has a pontoon-shaped hull with a wide width and flat bottom, made of small wood and made of steel, and the size of the hull is indicated by the cargo load, And self-propelled barges with propellers are also on the way, but most of them are dragged by tugboats or sailed by wheat ship.

However, since the conventional barge is designed to fit the side for transporting the cargo at a low cost, most of the barge has been used only for the transportation of cargo, and a special purpose cargo room is installed on the hull of the barge, Attempts to safely store and transport not only items but also dangerous goods such as oil have been made in various ways, but attempts to transport vehicles safely using barges have not been made.

Because of this, residents and travelers who frequent the island and the inland were forced to move to a destination requiring a car loaded on a car, such as a car ferry or a passenger ship, so that transportation costs to the parties were a significant economic burden And the transportation cost is very cheap compared to other vessels. However, since the use of the barge is restricted to the transportation of general cargo, the value of commercial use of the barge is also very low.

Korean Registered Utility Model No. 20-0428826

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle loading space in which a ship vehicle securing means is provided on a hull deck of a barge along with a cargo loading space, A cargo house having a door for a vehicle access is provided in the vehicle loading space so that the vehicle loaded in the space is hardly affected by the external environment at the time of sea transportation It is possible to safely transport a vehicle that was previously transported using a car ferry line or a passenger ship along with various cargoes on the deck of a barge that is a non-self-propelled ship, at a lower transportation cost, So that a part of the vehicle loading space can be used as a cargo loading space. As can be so, it is the main technical problem to provide a barge the loading space of a vehicle so as to more efficiently and rationally distributed in a more limited space of the hull is installed in accordance with the loading of the cargo and the vehicle wishes to transport.

According to the present invention, there is provided a barge with a cargo loading space provided on a pontoon-shaped hull deck, wherein a vehicle loading space provided with a ship vehicle securing means is provided on a deck of the hull, And the cargo loading space is provided over 1/3 to 2/3 of the length of the hull from the forward or stern side, while the vehicle loading space is provided over the remainder of the hull except for the cargo loading space, Wherein the loading space is made to be blocked from the outside by a cargo house having left and right side walls, a rear side wall and a ceiling, and a house door for vehicle entry is provided on the front entrance side of the cargo house, Is hung on the upper side of the front entrance side of the cargo house in a hinged manner so as to be angularly movable, A door opening / closing device for angularly moving the house door at an angle of 90 degrees is provided on the left and right sides of the front entrance of the body, and the door opening and closing device comprises a hydraulic cylinder And a guide frame for connecting the guide roller to the upper side of the house door, wherein the guide rail is provided at a lower portion of a front side of the cargo house in a vertical direction, A portion where the piston rod distal end portion of the hydraulic cylinder is connected to the house door, and a portion where the guide frame is connected to the house door and the guide roller, is a link joint capable of relative rotation between the components.

In a more preferred embodiment, the cargo house comprises a first house fixedly installed on a deck of a ship, and a movable second house installed so as to protrude in and out of the first house, The rear wall of the second house is opened to provide a vehicle access passage in connection with the front entrance of the first house, and the left, right, and rear doors of the first house are connected to the front entrance of the second house, A downward protruding step is formed on the right wall and the front end side of the ceiling and an upward projecting step is formed on the left and right walls of the second house and the rear end side of the ceiling, Guide rails for sliding movement of the second house are fixedly installed on both left and right ends of the vehicle loading space, and each of the guide rails is fixed to the lower ends of the left and right walls for the first house And is disposed in parallel with the inner surface of the step in close contact with the inner surface.

In addition, each of the guide rails is a rail having a "?" -Shaped cross section, and a rack gear frame to be inserted into the guide rails is provided at the lower ends of the left and right walls of the second house, A mounting space formed in the lower part of the rail by a predetermined depth into the hull is formed at a plurality of places in the longitudinal direction of the guide rail and a driving gear and a driven gear are disposed inside the mounting space, A rack gear portion for engaging with the driving gear and the driven gear is formed on the lower surface of the rack gear frame, the driving gear is inserted into the mounting space located on the front side of the entrance of the first house together with the driving motor, Are inserted and installed so as to be rotatably supported in the mounting space in the number of one or more respectively at the front side and rear side positions of the drive gear, A removable cover for the upper side of the mounting area to be inserted with the drive motor to prevent the loss of the protection area and the loading space of a vehicle drive motor plate is characterized in that the installed assembly.

According to the present invention as described above, it is possible to safely transport a vehicle, which was previously transported using a car ferry line or a passenger ship, with various cargoes on a deck of a barge, Through this, it is possible to minimize the economic burden of residents and tourists who frequent the island and the inland, and to secure a wider use of the barge, which is limited only to freight transportation, thereby greatly enhancing the commercial utilization value of the barge.

Particularly, the vehicle cargo house is divided into a first house and a second house, and the second house is projected into and out of the first house along guide rails disposed at both left and right ends of the vehicle loading space , It is possible to arbitrarily reduce the length of the car cargo house according to the required level, thereby allowing a part of the car loading space to be used as a cargo loading space. Accordingly, Thereby providing a more efficient distribution of the limited space of the hull.

In addition, a rack gear frame to be inserted along the guide rails is provided over the left and right walls of the second house, and a driving gear and a driven gear engaged with the rack gear frame are disposed inside the hull of the barge It is possible to perform the position adjustment work of the second house more precisely and accurately while minimizing the unnecessary area loss of the vehicle loading space and the malfunction or malfunction due to the corrosion of the apparatus, It has an effect of providing barges optimized for simultaneous transportation of cargo and vehicle.

1 is a schematic layout diagram of a barge according to the present invention.
2 is a side view of a barge according to the present invention;
3 is a plan view of a barge according to the present invention;
4 (a) and 4 (b) are enlarged side views of the main part showing the opened state and the closed state of the cargo house house door applied to the barge of the present invention;
5 is a cross-sectional view of a barge according to another embodiment of the present invention.
FIG. 6 is a side sectional view showing a state in which the second house enters the interior of the first house in FIG. 5; FIG.
7 is a sectional view taken along line AA of Fig.

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

As shown in FIG. 1, the roughly installed space arrangement of the barge 1 proposed by the present invention is such that the cargo loading space 3 and the vehicle loading space 10 are arranged together on the deck of the hull 2 The cargo loading space 3 and the vehicle loading space 10 have proper area ratios over the deck of the hull 2 and the respective loading spaces 3 and 10 have a length It is desirable to ensure that one loading space does not exceed two thirds of the length of the hull 2 so as to meet the object of simultaneous transport of cargo and vehicle.

As mentioned in the prior art, a special purpose cargo room 4 provided with a drying device, a cooling device, a fire extinguishing device, or the like is provided in the cargo loading space 3 for safely storing and transporting grain, refrigerated goods, And the bottom surface of the vehicle loading space 10 will be provided with a known marine vehicle securing means (movable or fixed type) applied to a car ferry line, a passenger ship, etc., and a more secure vehicle protection and marine transportation A cargo house 11 having a house door 12 is additionally installed in the vehicle loading space 10. [

The marine vehicle securing means provided on the bottom surface of the vehicle loading space 10 is constructed by a method specified by IMO (International Maritime Organization), in other words, a wire and a band are fixed to a ring fixed at a predetermined interval on the deck of the hull 2 A method of putting a wedge-shaped pedestal on a wheel of a vehicle after the car is connected to the hull 2 in the first place may be applied, or a vehicle hoisting device of the type described in Korean Patent Laid-Open No. 10-2003-0078145 The door 12 may be manually or automatically opened or closed, but an automatic opening and closing system using the door switch 13 is more preferable.

2 and 3 show the structure of the barge 1 according to the present invention in more detail, the hull 2 has a flat bottom pontoon shape, and over the deck edge of the hull 2, A rider 2a for safety of the hull 2 is installed and a buffer member such as a tire for braking at the time of riding is attached to the rim of the hull 2 The cargo loading space 3 in which the cargo room 4 is installed is provided with a vehicle loading space 10 in which a cargo house 11 is included on aft side deck, And handrails 4a and 11a are also provided at the upper ends of the cargo room 4 and the cargo house 11, respectively.

In addition, an anchor 7, which is wound or unwound by the electric winch 8, is provided on the bow side of the barge 1, and a communication mechanism including a wireless antenna, A mast (mast column) 9 for mooring is provided at the front side of the barge 1. A ramp way 6 for assisting the loading of the cargo and the movement of the car is provided at the stern side of the barge 1, (6) It is a well-known device for opening and closing the main passage of the barge 1 by using an electric winch 8 and a ramp wire 6a or the like. The cargo loading space 3 and the vehicle loading space 10 A control room 5 for collective control of various devices installed on the barge 1 is installed.

2 and 3 are merely representative examples of a barge 1 that can be applied to the present invention. The barge 1 is a vehicle loading space 10, the cargo room 4, the control room 5, the rampway 6 and the anchor 7, and the electric power applied to the cargo room 4 and the control room 5 from the external shape of the hull 2, It should be noted that the application of the winch 8, the mast 9, etc. can be variously selected and adjusted whenever necessary.

The substantial constituent elements of the present invention are those in which the vehicle loading space 10 to which the vessel vehicle securing means is applied on the deck of the hull 2 of the barge 1 is arranged with the cargo loading space 3 The cargo house 11 is installed in the vehicle loading space 10 so that the vehicle 14 is not substantially influenced by the external environment during maritime transportation using the barge 1, And a door 12 for entering and exiting the vehicle 14, which is manually or automatically openable and closable, is provided on the front entrance side thereof with the right side wall, the rear side wall and the ceiling.

The upper portions of the left, right, and rear walls of the cargo house 11 are inclined inwardly so as to minimize air resistance during navigation of the barge 1 (see Figs. 2 and 5 7). If necessary, a small-sized sight window may be installed at a predetermined interval on the wall of the cargo house 11, and a step structure may be additionally installed inside or outside the cargo house 11, (11a) so that passengers can climb up to take a view or rest.

4 (a) and 4 (b) show a typical example of the house door 12 installed at the front entrance of the cargo house 11, And the door door 12 provided at the front left and right sides of the cargo house 11 is used to automatically move the house door 12 at an angle of 90 degrees, The opening and closing method is shown.

The door switch 13 includes a hydraulic cylinder 15 connected upwardly slopingly between a central portion of the front side of the cargo house 11 and the upper end of the house door 12, A guide roller 17a for moving up and down the roller rail 17 and a guide for connecting the guide roller 17a to the upper side of the house door 12, And a lower end of the hydraulic cylinder 15 is connected to a bracket 15c fixed to the front surface of the cargo house 11. [

In addition, the front end of the piston rod 15a of the hydraulic cylinder 15 includes the hinge link joint 12a portion where the upper end of the house door 12 is connected to the cargo house 11, A portion connected to the door 12 and a portion where both side ends of the guide frame 16 are connected to the door 12 and the guide roller 17a are provided with link joints 15b 16a And a retractable pedestal 12b to which the lower end of the door is seated when the house door 12 is closed is connected to the lower end of the front entrance of the cargo house 11.

4 (a), the piston rod 15a of the hydraulic cylinder 15 protrudes to the outside, and the opened state of the cargo house 11 in which the house door 12 is heard at an angle of 90 degrees When the piston rod 15a of the hydraulic cylinder 15 is inserted into the cylinder in such an open state, the house door 12 is angularly moved about the upper link joint 12a, And the guide roller 17a connected to the guide frame 16 is also moved downward along the guide rail 17. In this way,

The lowering operation of the house door 12 as described above is smoothly guided by the link joint 15b at the front end of the piston rod 15a and the link joint 16a at both ends of the guide frame 16, The lower end of the house door 12 is seated toward the pedestal 12b at the lower end of the inlet of the cargo house 11 as shown in FIG. 4 (B) (12) closes the inlet of the cargo house (11).

The opening and closing method of the door 12 shown in FIG. 4 is also only one representative example applicable to the present invention. It is also possible to use a wire and an electric winch as applied to the lampway 6 instead of the hydraulic cylinder 15 And the house door 12 may be vertically moved up and down instead of the movement of the house door 12 at the entrance side of the cargo house 11. In addition, Of course, can be applied.

5 to 7 show a barge 1 according to another embodiment of the present invention. The cargo house 11 is connected to a first house 18 fixedly installed on the deck of the ship 2, And a movable second house 19 which is installed in the first house 18 so as to protrude and retract into the inside and outside of the first house 18. The moving means of the second house 19 is connected to the hull 1 of the barge 1, (2) on the deck, and the rest of the configuration is the same as the one embodiment described above.

In accordance with the divided structure of the cargo house 11 as described above, the house door 12 is connected to the front end entrance side of the second house 19, and the rear wall of the second house 19 is connected to the first house 18 are formed to be open to provide an entrance passage for the vehicle 14 in association with the front entrance of the first house 18 and a downward protruding step 18a is formed on the left and right walls of the first house 18 and the front end side of the ceiling An upward protruding protrusion 19a is formed which extends from the left and right walls of the second house 19 to the rear end side of the ceiling and is engaged with the protruding protrusion 18a of the first house 18, Is installed only on the upper part of the first house 18. [0034]

Each of the protruding jaws 18a and 19a is provided with an enlarged portion of Fig. 5 and a protruding jaw 18a which extends out of the first house 18 or enters the inside of the first house 18, as shown in Fig. A stopper function for substantially restricting the maximum travel distance of the second house 19 and minimizing the frictional resistance between the houses 18 and 19 due to the movement of the second house 19, The vehicle 14 loaded into the vehicle loading space 10 inside the vehicle 11 is exposed to the outside environment during the sea transportation.

Guide rails 20 for smooth and stable sliding movement of the second house 19 are fixedly installed at both left and right ends of the vehicle loading space 10, The first housing 18 and the second housing 19 are disposed in parallel with the inner surface of the lower end of the left and right walls for the first house 18 in close contact with each other. As the second house 19 enters the interior of the first house 18 It is possible to fix a cargo on the guide rail 20 so that a part of the vehicle loading space 10 exposed to the deck of the hull 2 of the barge 1 is used as a cargo loading space 3. [ It is preferable to additionally provide a coupling ring 20a such as a rope.

In the case where the cargo house 11 is divided into the fixed first house 18 and the movable second house 19 in the same manner as described above, in the small barge 1, the left and right sides of the second house 19 A roller or a wheel may be installed on the lower end of the wall or on the side of the guide rail 20 so as to move the second house 19 by gravity. However, most of the barge 1 for loading dozens of vehicles with other cargoes It is more preferable to apply the slide mechanism for mechanically moving the second house 19 by using the power of the motor rather than moving the second house 19 by gravity.

Considering the application of the slide mechanism as described above, it is necessary to consider the structure of the second house 19 in a simple, precise, and precise manner, So that maintenance and repair can be easily performed, and even when the vehicle is in a poor marine transportation environment, it is possible to minimize failure or malfunction, and the area loss of the vehicle loading space 10 provided inside the cargo house 11 is hardly caused.

To this end, as shown more clearly in FIG. 7, each of the guide rails 20 is fixedly mounted on the deck of the hull 2 of the barge 1 in the form of a rail having a "?" A rack gear frame 21 inserted into the guide rails 20 is installed at the lower ends of the left and right walls of the second house 19, At least three places (five places in the figure) of the mounting space 2c entering the inside of the hull 2 are formed at regular intervals in the longitudinal direction of the guide rail 20.

A driving gear 23 and a driven gear 24 are disposed in the mounting space 2c and a drive gear 23 and a driven gear 24 are engaged with a lower surface of the rack gear frame 21 And the drive gear 23 is inserted into the mounting space 2c located at the front side of the inlet of the first house 18 together with the drive motor 22, (Two in the figure) at the front side and rear side positions of the driving gear 23 and are rotatably supported in the mounting space 2c.

The reason why the driving gear 23 and the driven gear 24 are disposed in the manner as described above is that all the operations in which the second house 19 projects into and out of the first house 18 is performed by the at least one drive gear 23, And at least two gears 23 and 24 (at least four in total when the left and right gears are included) including the driving gear 23 when the second house 19 is moved, So that the second house 19 does not completely enter the interior of the first house 18 and the second house 19 can be stably supported by the position of the drive gear 23 It is in a state of coming out of the inlet of the first house 18.

The protruding jaws 18a and 19a of the first and second housings 18 and 19 are moved in the direction of the other houses 18 and 19 so that the sliding movement of the second house 19 can be carried out more smoothly and smoothly. A predetermined clearance is provided between the inner side surface of the guide rail 20 and the outer side surface of the rack gear frame 21 while the rack gear frame 21 is spaced apart from the surface by a predetermined gap, 21 is also supported by the drive gear 23 and the driven gear 24 at a predetermined distance from the deck surface of the hull 2 of the barge 1. The support 12b for the house door 12, Is preferably disposed between the left and right guide rails 20 as a soft material such as rubber so as not to hinder the movement of the second house 19 or to be omitted when necessary.

7, the upper side of the mounting space 2c into which the drive gear 23 is inserted together with the drive motor 22 is provided with the protection of the drive motor 22, It is preferable to assemble a removable cover plate 25 for preventing the area loss of the cover plate 25 and the cover plate 25 to provide a means necessary for binding and fixing the vehicle 14 to the surface of the cover plate 25, It is preferable to apply the speed reducer 22a to the drive motor 22 so that a speed and a torque suitable for the movement of the second house 19 from the drive gear 23 can be expressed.

In the case of the driven gear 24, as shown in the enlarged part of FIG. 5, in a state in which a separate support bracket 24a is vertically fixed in the mounting space 2c, A driven gear 24 may be provided on the rotary shaft of the driven gear 24a or the driven gear 24 may be connected to and inserted into the mounting space 2c itself along with the rotary shaft, It is preferable that the mounting space 2c is formed in a state in which the upper portion of the mounting space 2c is open and has substantially the same width as the guide rail 20. [

In addition, considering the fact that the barge 1 according to the present invention is used for the cargo and the marine transportation of the vehicle, the guide rail 20, the rack gear frame 21 and the drive gear 23 And the driven gear 24 are preferably made of stainless steel having excellent corrosion resistance against seawater or a metal material having a wear-resistant coating on the surface thereof, and are preferably applied to the rotating shaft of the driving gear 23 and the driven gear 24 It is preferable that the bearing (not shown) and the drive motor 22 are made of a waterproof bearing and a waterproof motor which can not infiltrate with salt.

According to the present invention having the above-described configuration, the vehicle 14, which had been previously transported by using a ship such as a car ferry line or a passenger ship, is loaded on the deck of the barge 1, which is a non- (1), which is limited to freight transportation, while minimizing the economic burden of residents and tourists who frequent the island and the inland through the transportation of the barge (1). It can greatly enhance the value of commercial use.

Particularly, the vehicle cargo house 11 is divided into a first house 18 and a second house 19, and the second house 19 is disposed at both left and right ends of the vehicle loading space 10 The length of the vehicle cargo house 11 can be arbitrarily reduced according to the required level by allowing the vehicle cargo house 11 to protrude and retreat along the guide rail 20 inside and outside the first house 18, It is possible to more effectively distribute the limited space of the hull 2 in accordance with the load of the cargo and the vehicle 14 to be transported.

In addition, a rack gear frame 21 to be inserted along the guide rail 20 is provided across the left and right walls of the second house 19, and a driving gear (not shown) 23 and the driven gear 24 are disposed inside the hull 2 of the barge 1, it is possible to reduce the unnecessary area loss of the vehicle loading space 10 and the corrosion of the mechanism It is possible to provide the barge 1 optimized for the simultaneous transport of the cargo and the vehicle 14, such that the positioning of the second house 19 can be performed more precisely and accurately, It is.

1: Barge 2: Hull 2a, 4a, 11a: Railing
2b: buffer member 2c: mounting space 3: cargo loading space
4: Cargo Room 5: Control Room 6: Lampway
6a: Lamp wire 7: Anchor 8: Electric winch
9: mast 10: vehicle loading space 11: cargo house
12: House door 12a, 15b, 16a: Link joint 12b:
13: Door switch 14: Vehicle 15: Hydraulic cylinder
15a: piston rod 15c: bracket 16: guide frame
17: roller rail 17a: guide roller 18: first house
18a, 19a: protruding jaw 19: second house 20: guide rail
20a: coupling ring 21: rack gear frame 22: driving motor
22a: Reduction gear 23: Driving gear 24:
24a: support bracket 25: cover plate

Claims (4)

A barge (1) provided with a cargo loading space (3) on a deck of a pontoon-shaped hull (2)
A vehicle loading space 10 provided with a securing means for a ship vehicle 14 is disposed on a deck of the hull 2 together with a cargo loading space 3 and the cargo loading space 3 is connected to a hull 2) is provided over 1/3 to 2/3 of the length, the vehicle loading space 10 is provided over the remainder of the hull 2 except for the cargo loading space 3,
The vehicle loading space 10 is configured to be blocked from the outside by a cargo house 11 having left and right side walls, a rear side wall and a ceiling, and the front entrance side of the cargo house 11 is manually or automatically opened / And a house door (12) for entering and exiting the vehicle (14) is installed. 2. The cargo house (11) according to claim 1, wherein the house door (12) is hung on the upper side of the front entrance side of the cargo house (11) A door switch 13 for angularly moving the door 12 at an angle of 90 degrees is provided,
The door switch 13 includes a hydraulic cylinder 15 connected upwardly slopingly between a central portion of the front side of the cargo house 11 and the upper end of the house door 12, A guide roller 17a for moving up and down the roller rail 17 and a guide for connecting the guide roller 17a to the upper side of the house door 12, Frame 16,
A portion where the front end of the piston rod 15a of the hydraulic cylinder 15 is connected to the house door 12 and a portion where the guide frame 16 is connected to the house door 12 and the guide roller 17a, (15b) (16a) capable of rotating relative to each other. The cargo house according to claim 1 or 2, wherein the cargo house (11) comprises a first house (18) fixedly installed on the deck of the ship (2) And a movable second housing (19)
The rear wall of the second house 19 is connected to the front entrance of the first house 18 and is connected to the front entrance of the second house 19, And is opened to provide an access passage,
A downward protruding protrusion 18a is formed on the left and right walls of the first house 18 and the front end of the ceiling and the left and right walls of the second house 19 and the rear end of the ceiling An upward projecting step 19a is formed which is engaged with the projecting step 18a of the first house 18,
Guide rails 20 for sliding movement of the second houses 19 are respectively fixed to both left and right ends of the vehicle loading space 10 and each of the guide rails 20 is connected to a first house 18. The barge according to claim 1, wherein the barge is disposed in parallel with the lower inner surface of the left and right walls. The guide rail according to claim 3, wherein each of the guide rails (20) is a rail having a cross-sectional shape and the lower ends of the left and right walls of the second house (19) A rack gear frame 21 is provided,
At least three mounting spaces 2c are formed in the lower portion of each of the guide rails 20 at predetermined intervals in the longitudinal direction of the guide rail 20,
A driving gear 23 and a driven gear 24 are disposed in the mounting space 2c and a drive gear 23 and a driven gear 24 are engaged with a lower surface of the rack gear frame 21 A rack gear portion is formed,
The drive gear 23 is inserted into the mounting space 2c located at the front side of the inlet of the first house 18 together with the drive motor 22. The driven gear 24 is driven by the drive gear 23, And is inserted and installed so as to be rotatably supported in the corresponding mounting space 2c as one or more of the front side and rear side positions of the mounting space 2c,
A detachable cover plate 25 for preventing the loss of the area of the vehicle mounting space 10 as well as the protection of the drive motor 22 is provided on the upper side of the mounting space 2c in which the drive gear 23 is inserted together with the drive motor 22. [ Is installed and installed in the cargo space.

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