JP2008213796A - Vehicle loading and unloading device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To lower the loading surface of a conveyor loaded with cargo. <P>SOLUTION: The conveyor 1 which moves the cargo in the fore-and-aft direction of a loading space is installed on a floor surface Ba of the loading space B where the cargo is loaded. The conveyor 1 is connected to a roller 2 which is formed in a sheet shape and installed at the rear side of the loading space B to be wound and paid out. A wind driving part 4 which is connected to the roller 2 and rotationally drives the roller 2 to the direction where the conveyor 1 is wound is installed at the rear side of the loading space B. A delivery driving part 5 which is connected to the delivery tip end of the conveyor 1 and drives to pay out the conveyor 1 is installed at the front side of the loading space B. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention belongs to a technical field related to a vehicle loading / unloading device used for movement of cargo loaded on a loading platform such as a truck.

  In recent years, vehicles for cargo transportation such as trucks have been equipped with a vehicle loading / unloading device in which a conveyor is installed on the floor of a loading platform on which cargo is loaded. This vehicle loading / unloading device enables the cargo loaded and loaded on the rear side of the loading platform to be moved to the front side of the loading platform by driving the conveyor, and loaded on the front side of the loading platform when unloading. The cargo can be moved to the rear side of the loading platform to reduce the handling work of workers on the loading platform, especially in the van type where the space on the loading platform is constrained by the side panel and the top panel. It is useful for vehicles.

  In this vehicular cargo handling apparatus, the conveyor must be driven in two directions before and after the loading platform, which causes a problem that the driving mechanism of the conveyor is enlarged. For this reason, development of the vehicle cargo handling apparatus which can avoid the enlargement of the drive mechanism of a conveyor is desired.

2. Description of the Related Art Conventionally, as a vehicle loading / unloading device aimed at avoiding an increase in the size of a conveyor driving mechanism, for example, those described below are known.

In Japanese Patent Laid-Open No. 2000-16142, a conveyor for moving cargo in the longitudinal direction of the loading platform is installed on the floor surface of the loading platform on which the cargo is loaded, and the conveyor is wound endlessly in the longitudinal direction of the loading platform. A vehicle cargo handling device arranged in the manner described above is described.

  The vehicular cargo handling apparatus according to Patent Document 1 can change the driving direction of the conveyor by means of electrical switching of the driving mechanism of the conveyor, and can move the cargo in any direction before and after the loading platform. Thus, an increase in the size of the conveyor drive mechanism is avoided.

  In the vehicle handling apparatus according to Patent Document 1, the conveyor is passed in an endless manner, and a space for accommodating the two-stage arrangement structure of the conveyor must be secured on almost the entire surface of the floor of the loading platform. There is a problem that the loading surface of the conveyor on which the cargo is loaded becomes high.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a vehicle handling apparatus capable of lowering the loading surface of a conveyor on which cargo is loaded.

  In order to solve the above-described problem, the vehicle handling apparatus according to the present invention employs means described in each of the claims.

  That is, according to claim 1, in the vehicle loading / unloading device in which the conveyor for moving the cargo in the front-rear direction of the loading platform is installed on the floor surface of the loading platform on which the cargo is loaded, It is connected to the installed roller so that it can be wound and fed out, and a take-up drive unit is installed on the rear side of the loading platform to rotate the roller in the direction in which the conveyor is wound, and on the front side of the loading platform. A feeding drive unit that is connected to the leading end of the conveyor and drives so that the conveyor is fed is provided.

  In this means, a roller, a winding drive unit, and a feeding drive unit are provided, and the two-stage arrangement structure of the conveyor is eliminated, so that the roller, the winding driving unit, and the feeding drive unit are provided with a recess on the floor surface of the loading platform. Can be installed using.

  According to a second aspect of the present invention, in the vehicular cargo handling apparatus according to the first aspect, the conveyor has an entire stretched area continuous in the front-rear direction and the width direction of the loading platform.

  With this means, since the conveyor has a full area, no gap or the like is formed on the stacking surface of the conveyor.

  According to a third aspect of the present invention, in the vehicular cargo handling apparatus according to the first or second aspect, the conveyor is provided with a freight support that abuts against a side surface of the freight loaded on the leading end. To do.

  In this means, the cargo support body is erected on the delivery tip of the conveyor, so that the cargo support body can have a backrest function for the cargo.

  Further, according to claim 4, in the vehicle loading apparatus according to any one of claims 1 to 3, the take-up drive unit is provided with a wire connected to the leading end of the conveyor and a spiral take-up groove for winding the wire. And a winding drum.

  In this means, the wire can be wound on the same peripheral surface by winding the wire with a winding drum in which a spiral winding groove is formed.

  According to a fifth aspect of the present invention, in the vehicle loading / unloading apparatus according to the third or fourth aspect, the take-up drive unit is a mechanically-supported cargo support drive mechanism that applies a drive force for moving the cargo support in the longitudinal direction of the cargo bed. It is characterized by being branched to.

  In this means, the cargo support driving mechanism is applied to the cargo support so as to positively move the cargo support in the front-rear direction of the cargo bed, thereby preventing the cargo support from leaning on the cargo.

  The vehicle loading / unloading apparatus according to the present invention includes a roller, a winding drive unit, and a feeding drive unit, and eliminates the two-stage arrangement structure of the conveyor, so that the roller, the winding driving unit, and the feeding drive unit are disposed on the loading platform. Since it can install using the recessed part etc. of a floor surface, there exists an effect which can make low the loading surface of the conveyor in which cargo is loaded.

  Further, as claimed in claim 2, since the conveyor has an entire area, no gaps or the like are formed on the stacking surface of the conveyor, so the rollers and the winding drive unit arranged below the stacking surface of the conveyor Thus, there is an effect that the feeding drive unit is not damaged by the biting of foreign matter.

  Further, as claimed in claim 3, since the cargo support is erected on the delivery tip of the conveyor, the cargo support can have a backrest function with respect to the cargo so that no cargo collapse occurs. Cargo can be moved stably.

  Further, according to a fourth aspect of the present invention, since the wire can be wound on the same circumferential surface by winding the wire with a winding drum in which a spiral winding groove is formed, the cargo described on the conveyor is loaded on the loading platform. Can be moved from the rear side to the front side at an equal speed.

  Further, as claimed in claim 5, the cargo support driving mechanism applies a driving force that positively moves the cargo support in the front-rear direction of the loading platform, thereby loading the cargo support on the conveyor that prevents the cargo support on which the cargo is leaning. It is possible to smoothly and surely move the cargo support body having a backrest function with respect to the received cargo.

  The best mode for carrying out a vehicular cargo handling apparatus according to the present invention will be described below with reference to the drawings.

  In this form, what is installed in a van type loading platform B of a truck T is shown.

  As shown in FIG. 1 to FIG. 3, this embodiment is composed mainly of a conveyor 1, a roller 2, a cargo support 3, a take-up drive unit 4, a feeding drive unit 5, and a cargo support drive mechanism 6. .

  The conveyor 1 is formed in a sheet shape with a lightweight and tough belt (for example, polyamide laminated as a core layer), and is continuously stretched in the front-rear direction and the width direction (direction orthogonal to the front-rear direction) of the loading platform B. Thus, one surface, which is the loading surface of the cargo P, is disposed on the floor surface Ba of the loading platform B. As shown in FIGS. 3 and 4, the conveyor 1 is loaded with the load of the cargo P that extends in the arrangement direction of the conveyor 1 (the front-back direction of the floor surface Ba of the loading platform B) and is loaded. A floor frame 7 is provided to support the support. As shown in detail in FIG. 4, the floor frame 7 is provided with an accommodation groove 9 that opens toward the conveyor 1 and accommodates a solid lubricant 8 such as wax. The lubricant 8 is fitted and fixed to a cup-shaped slider 11 that is slidably received in the receiving groove 9 and is elastically biased toward the conveyor 1 by a spring material 10 made of a coil spring.

  The roller 2 has an axis set in the width direction of the loading platform B and is rotatably installed at the rear end of the floor surface Ba of the loading platform B. The feeding base end of the conveyor 1 is fixed and the conveyor 1 is wound up. It can be paid out. In addition, a guide roller 12 for guiding the conveyor 1 toward the arrangement surface is installed near the roller 2.

  The cargo support body 3 is formed in a torii-shaped frame and is erected on the feeding tip of the conveyor 1 at a height up to the vicinity of the top panel Bb of the loading platform B. As shown in detail in FIG. 6, the cargo support 3 and the leading end of the conveyor 1 are fixed via L-shaped reinforcing metal fittings 13 extending in the width direction of the loading platform B, and lean to the conveyor 1 and twisted. Etc. are not generated. A traveling roller mounting plate 14 that is also fixed to the reinforcing metal fitting 13 is fixed to the lower side surface of the cargo support 3. A traveling roller 16 that travels inside a U-shaped traveling rail 15 disposed along the side panel Bc of the loading platform B is rotatably supported on the traveling roller mounting plate 14.

  The winding drive unit 4 includes a drive motor 4a installed at the rear end of the floor surface Ba of the loading platform B, a drive shaft 4b penetrating through the center of the roller 2, a drive motor 4a, and a drive shaft 4b. And a drive transmission member 4c such as a pulley and a chain for connecting the two.

  The feeding drive unit 5 includes a drive motor 5a installed at the front end of the floor surface Ba of the loading platform B, a drive shaft 5b disposed in the width direction of the loading platform B, a drive motor 5a, and a drive shaft 5b. A drive transmission member 5c such as a pulley and a chain for connecting them, a drum 5c fixed coaxially to the drive shaft 5b, one end fixed to the drum 5c, and the other end to the lower end (reinforcing metal fitting 12) of the cargo support 3 ) And a wire 5d fixed to. The drum 5c is provided with a spiral winding groove 5e for guiding the winding of the wire 5d.

  As shown in detail in FIG. 5, the cargo support drive mechanism 6 includes a branching bevel gear 6 a that is coaxially fixed to the end of the drive shaft 5 b of the feeding drive unit 5, and an angle of 90 degrees with respect to the branching bevel gear 6 a. The driving bevel gear 6b meshed with each other, the driving shaft 6c having the driving bevel gear 6b coaxially fixed to the lower end portion and disposed vertically along the side panel Bc of the loading platform B, and a middle portion of the driving shaft 6c. A relay horizontal Babel gear 6d fixed coaxially to the upper end, a relay vertical Babel gear 6e meshed with the relay horizontal Babel gear 6d at an angle of 90 degrees, and a relay vertical Babel gear 6e are fixed coaxially to one end. A screw rod 6f disposed horizontally along the side panel Bc of the loading platform B (the longitudinal direction of the loading platform B) and a nut 6g of a rectangular block body fixed to the side surface of the cargo support 3 and screwed with the screw rod 6f. It consists of. The branching bevel gear 6a, the driving bavel gear 6b, the driving shaft 6c, and the relay horizontal babel gear 6d are arranged in two systems in the vertical direction. The relay vertical babel gear 6e, the screw rod 6f, and the nut 6g are arranged in four systems of two systems in the horizontal direction on both sides. As shown in detail in FIG. 6, a guide roller 18 that rolls and moves inside the U-shaped guide rail 17 disposed along the side panel Bc of the loading platform B is rotatable on the nut 6 g. It is supported.

  Furthermore, in this embodiment, a cargo fixture 19 is provided for tying a rope or the like R around the threaded rods 6f on both sides of the cargo support driving mechanism 6 and stretching them.

  As shown in detail in FIG. 7, the cargo fixture 19 is a rectangular block nut 19a that is screwed onto the screw rod 6f of the cargo support drive mechanism 6, and the above-mentioned guide rotatably supported by the nut 19a. It comprises a guide roller 19b that rolls and moves inside the rail 17, and a U-shaped hook 19c that is fixed to the nut 19a so as to protrude toward the inside of the loading platform B.

  According to this embodiment, since the conveyor 1 does not have a two-stage arrangement structure, the roller 2, the winding drive unit 4, and the feeding drive unit 5 are installed using the concave portion of the floor surface Ba of the loading platform B, The arrangement | positioning surface (feeding surface) used as the loading surface of the conveyor 1 in which the cargo P is loaded can be made low. Therefore, the volume of the loading platform B can be effectively used for loading the cargo P. Further, since the installation space is reduced by avoiding the two-stage arrangement structure of the conveyor 1, the fixed loading platform B of the truck T that has already been used can be easily retrofitted.

  In order to use this form, the conveyor P is unloaded from the roller 2 by driving the unwinding drive unit 5 to move the cargo P unloaded and loaded on the rear side of the loading platform B to the front side of the loading platform B, Cargo P loaded on the front side of loading platform B at the time of unloading by winding the conveyor 1 on the roller 2 by the driving of the winding driving unit 4 and the driving in the opposite direction of the feeding driving unit 5 Is moved to the rear side of the loading platform B.

  When the conveyor 1 is fed from the roller 2 by driving the feeding drive unit 5, the drive motor 4 a of the winding drive unit 4 is stopped. As a result, the mechanical resistance of the drive motor 4a and the drive transmission member 4c of the winding drive unit 4 can be used to apply tension to the fed conveyor 1 to prevent the conveyor 1 from leaning and twisting. Smooth and reliable movement of the conveyor 1 is guaranteed. Since the feeding drive unit 5 that feeds the conveyor 1 from the roller 2 winds the wire 5d by the winding drum 5c provided with the spiral winding groove 5e, the wire 5d can be wound on the same peripheral surface. . As a result, the cargo P described on the conveyor 1 can be moved from the rear side of the loading platform B to the front side at an equal speed. In the movement of the conveyor 1, the conveyor 1 is formed into a sheet shape with a light and strong belt, or the lubricant 8 that is pressed against the moving conveyor 1 is scraped and applied and supplied. The friction of movement of the conveyor 1 to which the load of the cargo P thus applied is applied is reduced. Accordingly, the feeding drive unit 5 can reliably drive the conveyor 1 with a small driving force.

  Further, in the movement of the conveyor 1, the cargo support 3 has a backrest function for receiving the load of the cargo P on which the side surface of the cargo P loaded on the conveyor 1 comes into contact. The cargo support 3 that moves integrally with the conveyor 1 is ensured to move smoothly by the traveling rail 15, the traveling roller 16, the guide rail 17, and the guide roller 18 even when the cargo P approaches. Further, with respect to the cargo support 3, the cargo support drive mechanism 6 is provided with a driving force that moves forward of the loading platform B in synchronism with the drive of the feeding drive unit 5 (a nut 6 g that is screwed into the rotating screw rod 6 f. A driving force for moving the carrier B forward is provided. Therefore, even when the load of the cargo P approaching the cargo support 3 is large, the cargo support 3 is not tilted, and the movement of the conveyor 1 and the movement of the cargo support 3 are in phase, and the traveling rail 15, the traveling roller 16, the guide rail 17, and the guide roller 18 are not damaged, or the cargo P does not collapse due to backlash. As a result, it is possible to smoothly and surely move the cargo support 3 having a backrest function with respect to the cargo P. The take-up drum 5c in which the take-up groove 5e of the pay-out drive unit 5 is engraved does not cause a phase between the movement of the conveyor 1 from the roller 2 and the movement of the cargo support 3.

  The cargo support drive mechanism 6 that drives the cargo support 3 is synchronized with the delivery drive unit 5 by mechanical branch transmission such as the branching bevel gear 6a from the delivery drive unit 5, and thus the cargo support drive mechanism 6 , A complicated control mechanism for synchronizing the feeding drive unit 5 is not required. In addition, since the cargo support drive mechanism 6 has a simple structure and a gear structure such as a branching bevel gear 6a that is reliable in operation, installation on a vehicle (truck T) with a limited installation space is facilitated.

  When winding the conveyor 1 around the roller 2, the roller 2 is rotated by driving the drive motor 4 a of the winding drive unit 4. At this time, as the conveyor 1 is wound around the roller 2, the rotational speed of the roller 2 is substantially increased by the thickness of the wound-up conveyor 1, but the conveyor 1 has a sheet shape, This does not affect the synchronization with the driving of the feeding drive unit 5 and the cargo support drive mechanism 6.

  Further, in this embodiment, as shown in FIG. 8, a rope or the like R is tied and stretched to the hooks 19c of the cargo fixtures 19 on both sides, thereby preventing the collapse of the cargo with a backrest function similar to the cargo support 3. (In particular, it is possible to prevent collapse of the cargo support 3 in the opposite direction). The cargo fixture 19 moves in synchronization with the cargo support 3 while maintaining a certain distance along the screw rod 6f of the cargo support drive mechanism 6.

  Further, in this embodiment, since the cargo support 3 is formed in a torii-shaped frame, an operator can easily hide from the cargo support 3 to the front side of the loading platform B because of the necessity of other work such as cleaning. You can insert or insert your hand.

  Furthermore, since the conveyor 1 is stretched over the entire surface and no gap is formed on the stacking surface of the conveyor 1, the rollers 2, the winding drive unit 4, and the feeding drive unit 5 disposed below the stacking surface of the conveyor 1 Will not be damaged.

  As described above, the cargo support driving mechanism 6 can be arranged along the top panel Bb of the loading platform B in addition to the illustrated embodiment.

  The vehicle loading / unloading apparatus according to the present invention can be widely applied to vehicles for cargo transportation other than the truck T.

1 is a simplified perspective view of the best mode for carrying out a vehicular cargo handling apparatus according to the present invention. It is a front view of FIG. FIG. 3 is a side view of FIG. 2. FIG. 3 is an enlarged detailed cross-sectional view of a main part of FIG. 2. FIG. 2 is a perspective view of an enlarged part of the main part of FIG. 1. It is the perspective view to which the other principal part of FIG. 1 was expanded. FIG. 5 is an enlarged perspective view of still another main part of FIG. 1. FIG. 8 is an overall simplified perspective view using FIG. 7.

Explanation of symbols

1
Conveyor 2 Roller 3 Cargo support 4 Winding drive unit 5 Feeding drive unit 6 Cargo support drive mechanism T
Truck (vehicle)
B cargo bed Ba floor Bc side panel

Claims (5)

  In a vehicle loading / unloading device in which a conveyor for moving cargo in the front-rear direction of the loading platform is installed on the floor of the loading platform on which the cargo is loaded, the conveyor is formed into a sheet and wound around a roller installed on the rear side of the loading platform The take-up drive unit is connected to the roller on the rear side of the loading platform and rotationally drives the roller in the direction in which the conveyor is taken up, and connected to the leading end of the conveyor on the front side of the loading platform. A vehicular loading / unloading apparatus, wherein a feeding drive unit that drives the conveyor to be fed is installed.   2. The vehicular cargo handling apparatus according to claim 1, wherein the conveyor has an entire stretched area continuous in the front-rear direction and the width direction of the cargo bed.   3. The vehicle loading / unloading apparatus according to claim 1 or 2, wherein the conveyor is provided with a cargo support that abuts against a side surface of the cargo loaded on the leading end.   4. The vehicular cargo handling apparatus according to claim 1, wherein the winding drive unit includes a wire connected to a leading end of the conveyor and a winding drum provided with a spiral winding groove for winding the wire. A vehicle loading / unloading device comprising:   5. The cargo handling apparatus for a vehicle according to claim 3, wherein the take-up drive unit mechanically branches a cargo support drive mechanism that applies a drive force for moving the cargo support in the front-rear direction of the loading platform. A vehicle loading / unloading device.