JP2010215354A - Cargo handling system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adequately reduce labor loads of a driver of a vehicle, and to adequately and efficiently perform cargo handling to the vehicle in a cargo handling system realized by the vehicle transporting a cargo and a cargo center handling the transported cargo. <P>SOLUTION: This cargo handling system consists of the vehicle T transporting the cargo P and the cargo center S handling the transported cargo P. The cargo center S includes a truck yard 100 allowing the vehicle T to stop with its rear side directed, and a carrying device 200 arranged in the truck yard 100 and carrying the cargo P to the rear side of the vehicle T. The truck yard 100 has width allowing a plurality of vehicles T to stop in parallel. The carrying device 200 includes a conveying table 200a advancing/retracting the cargo P to the rear side of the vehicle T, and a lateral movement mechanism 200b moving the conveying table 200a in the parallel direction of the vehicle T with the cargo P placed thereon. The vehicle T includes a cargo handling device 400 for a vehicle performing cargo handling work to a loading space B for loading the cargo P. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention belongs to a technical field related to a cargo handling system realized by a vehicle for carrying cargo and a cargo center for handling cargo carried by the vehicle.

  Recently, in order to efficiently load and unload a large amount of cargo in a cargo center (distribution center, distribution center), an attempt has been made to automate cargo handling by combining computers, sensors, etc. with the cargo center. ing. However, since the cargo handling of the cargo vehicle may eventually have to be relied upon manually, the labor burden on the driver of the vehicle (the cargo handling operator for the vehicle) is increasing. For this reason, there is a demand for the development of a cargo handling system that can efficiently carry out cargo handling on a vehicle without increasing the labor burden on the driver of the vehicle.

  Conventionally, as a cargo handling system, for example, the one described in Patent Document 1 is known.

  Patent Document 1 includes a vehicle that transports cargo and a cargo center that handles cargo transported by the vehicle, and is installed in a truck yard where the vehicle is stopped facing the rear side in the cargo center and in the truck yard. A cargo handling system equipped with a transport device for transporting cargo to the rear side is described.

  The cargo handling system according to Patent Document 1 allows the transportation device to enter a part of the cargo bed from the rear side of the vehicle, thereby improving the efficiency of the cargo handling work and the vehicle driver near the rear of the cargo bed of the vehicle. It will reduce the labor burden.

JP 2000-142993 A

  In the cargo handling system according to Patent Document 1, since the transport device cannot be moved into the back of the vehicle loading platform, manpower is required for loading at the back of the vehicle loading platform, and the labor burden on the driver of the vehicle is sufficiently reduced. There is a problem that cannot be done. In addition, since it is necessary to frequently reciprocate the vehicle to the vehicle that performs the cargo handling, there is a problem that the cargo handling for the vehicle cannot be performed sufficiently efficiently.

  The present invention has been made in consideration of such problems, and a cargo handling system capable of sufficiently reducing the labor burden on the driver of the vehicle and capable of handling the vehicle sufficiently efficiently. The issue is to provide.

  In order to solve the above-described problems, the cargo handling system according to the present invention employs means described in each of the claims.

  That is, according to the first aspect of the present invention, the vehicle includes a vehicle for carrying cargo and a cargo center for handling cargo carried by the vehicle, and the vehicle is disposed in the truck yard and the truck yard where the vehicle is stopped facing the rear side. In a cargo handling system equipped with a transport device that transports cargo to the rear side, the truck yard has a size that allows multiple vehicles to stop in parallel, and the transport device transports cargo to the rear side of the vehicle. A vehicular loading / unloading device that performs a loading / unloading operation on a loading platform on which the cargo is loaded. It is characterized by being equipped.

  In this means, since the vehicle loading / unloading device is installed in the vehicle, manpower is not required for loading / unloading at the back of the vehicle loading platform. In addition, a carriage that moves the cargo forward and backward with respect to the rear side of the vehicle in a truck yard where a plurality of vehicles are stopped in parallel and a lateral movement that moves the carriage in the parallel direction of the vehicle with the cargo loaded By providing the transport device including the mechanism, it is not necessary to frequently reciprocate the transport device to the vehicle that handles the cargo.

  According to a second aspect of the present invention, in the cargo handling system according to the first aspect, the transport platform of the transport device is a conveyor that transports the cargo in a stacked state loaded on the cargo platform of the vehicle.

  With this means, the cargo can be loaded on the vehicle as it is in the loaded state by loading the cargo on the loading platform of the transporting device while being loaded on the loading platform of the vehicle.

  According to a third aspect of the present invention, in the cargo handling system according to the second aspect of the present invention, the transportation platform of the transporting device is configured to transport at least an amount of cargo that is fully loaded on one vehicle.

  In this means, the cargo handling work can be carried out in units of the cargo fully loaded in one of the vehicles by transporting the cargo of the amount fully loaded in one of the vehicles on the transportation platform of the transporting device. it can.

  According to claim 4, in the cargo handling system according to any one of claims 1 to 3, the vehicle handling device installed in the vehicle moves the cargo in the front-rear direction of the loading platform on the floor surface of the loading platform on which the cargo is loaded. In a vehicle loading / unloading device equipped with a conveyor, the conveyor is formed in a sheet shape and is wound around a roller installed on the rear side of the loading platform so that it can be fed out and the leading end can be moved in the front-rear direction of the loading platform. The roller and the drive unit that drives the movement chain are connected to the arranged movement chain, and the roller is driven when the conveyor is wound up, and the movement chain is driven when the conveyor is fed out. It is characterized in that a drive transmission mechanism in which an actual switching is performed by a cam is provided.

  With this means, with respect to the equipment of the vehicle handling device for the vehicle, the sheet-like conveyor is wound around the roller by the take-up movement chain, thereby avoiding the two-stage arrangement structure of the conveyor and driving the roller and the movement chain. By sharing a part via a drive transmission mechanism in which automatic switching is performed by a cam, the drive part and the drive transmission mechanism can be installed using a recess or the like on the floor surface of the loading platform.

  Since the cargo handling system according to the present invention is equipped with a vehicle cargo handling device on the vehicle, no labor is required for cargo handling at the back of the vehicle loading platform, so that the labor burden on the driver of the vehicle can be sufficiently reduced. There is an effect that can. In addition, a carriage that moves the cargo forward and backward with respect to the rear side of the vehicle in a truck yard where a plurality of vehicles are stopped in parallel and a lateral movement that moves the carriage in the parallel direction of the vehicle with the cargo loaded By providing the transport device including the mechanism, it is not necessary to frequently reciprocate the transport device to the vehicle that performs the cargo handling, so that there is an effect that the cargo handling with respect to the vehicle can be performed sufficiently efficiently.

  Further, as claimed in claim 2, since the cargo can be loaded on the vehicle in the loaded state by loading the cargo on the carrier of the transporting device in the stacked state, There is an effect that can be performed more sufficiently and efficiently.

  Further, as claimed in claim 3, the cargo handling work is carried out in units of the cargo that can be fully loaded in one vehicle by transporting the cargo that is fully loaded in one vehicle on the transportation platform of the transport device. Therefore, there is an effect that cargo handling with respect to both can be performed more sufficiently and efficiently.

  Further, as a fourth aspect of the present invention, regarding the equipment of the vehicle loading / unloading device for a vehicle, a sheet-like conveyor is wound around a roller by a take-up movement chain, thereby avoiding a two-stage arrangement structure of the conveyor, and a roller, for moving By sharing the drive part of the chain with a drive transmission mechanism in which automatic switching is performed by a cam, the drive part and the drive transmission mechanism can be installed using a recess on the floor of the loading platform. Therefore, there is an effect that the loading surface of the conveyor on which the vehicle cargo is loaded can be lowered to increase the loading amount of the vehicle cargo.

It is a top view of the form for carrying out the cargo handling system concerning the present invention. It is a side view of FIG. It is. It is a perspective view of the principal part of FIG. 1, FIG. 2 (a partial enlarged view is included). FIG. 4 is an enlarged side cross-sectional view of a main part of FIG. 3. FIG. 5 is an enlarged sectional view taken along line XX in FIG. 4. It is the YY line expanded sectional view of FIG. It is an enlarged view of the principal part of FIG. It is a cross-sectional view of FIG. It is an enlarged view of the principal part of FIG. 8, (A), (B) shows the operation state from which the principal part differs. It is a longitudinal cross-sectional view which shows operation | movement of the principal part of FIG. 9, and the operation state to the reverse direction is shown by (A) and (B). It is. It is a top view which shows operation | movement of the principal part in the drive to the one direction of FIG. 9, and (A) and (B) show different operation states. It is a top view which shows operation | movement of the principal part in the drive to the other direction of FIG. 9, and the different operation state is shown by (A) and (B). It is a longitudinal cross-sectional view of the principal part of FIG. It is a side view of the other principal part of FIG. It is a side view of the other principal part of FIG. FIG. 16 is a partially enlarged view of FIG. 15. It is a perspective view of the other principal part of FIG.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the cargo handling system which concerns on this invention is demonstrated based on drawing.

  This form is comprised by the cargo center S and the vehicle T, as shown in FIG. 1, FIG.

  In the cargo center S, a truck yard 100, a transport device 200, and a loading device 300 are installed.

  The truck yard 100 is composed of a platform having such a size that a plurality of vehicles T are stopped in parallel with the vehicle T facing the rear side. In this truck yard 100, a warehouse or the like (not shown) for storing the cargo P is installed adjacently.

  The transport apparatus 100 is disposed in the truck yard 100, and includes a transport platform 100a that moves the cargo P forward and backward relative to the rear side of the vehicle T in a stacked state with respect to the rear side of the vehicle T, A lateral movement mechanism 100b that moves in the parallel direction of the vehicle T with the cargo P placed on the platform 100a, a relay platform 100c that relays between the transportation platform 100a and the vehicle T, and the transportation platform 100a And a base 100d to be moved. The transport table 100a, the lateral movement mechanism 100b, the relay table 100c, and the base table 100d are belt conveyors.

  The loading device 300 includes a lift mechanism that loads the cargo P on the base 100 d of the transport device 100.

  The vehicle T is provided with a vehicle handling device 400.

  As the vehicle T, a van type truck is shown.

  The vehicle loading / unloading device 400 is installed on the loading platform B of the vehicle T, and includes a conveyor 19, a roller 20, a cargo support 21, a cargo support feeding mechanism 22, a cargo fixture 23, a moving chain 24, and a drive unit 25. The drive transmission mechanism U is configured as a main part.

  As shown in FIGS. 3 and 4, the conveyor 19 is formed into a sheet shape with a lightweight and tough belt (for example, a polyamide layered as a core layer), and the carrier B has a front-rear direction and a width direction (front-rear direction). The arrangement surface which becomes the loading surface of the cargo P can be developed on the floor surface Ba of the loading platform B. As shown in FIG. 4, the loading surface of the conveyor 19 supports the load of the cargo P that extends in the arrangement direction of the conveyor 19 (the front-rear direction of the floor surface Ba of the loading platform B) and is loaded. A floor frame 26 is provided. If necessary, the floor frame 26 is provided with a solid lubricant such as wax that comes into contact with the conveyor 19 in order to facilitate the movement of the conveyor 19.

  As shown in FIGS. 3 and 4, the roller 20 has an axis set in the width direction of the loading platform B and is rotatably installed at the end on the rear side of the floor surface Ba of the loading platform B. The feed base end (winding start end) is fixed, the roller 19 is wound up and fed out, and the roller main body 20a and the roller shaft 20b fixed to the roller main body 20a. A drive transmission sprocket 27 is fixed to the roller shaft 20b. A guide roller 28 for guiding the conveyor 19 toward the arrangement surface is installed on the front side of the loading platform B near the roller 20.

  As shown in FIGS. 3 and 4, the cargo support body 21 prevents the cargo P loaded with a backrest function from collapsing, and is formed in a torii-shaped frame so that the leading end of the conveyor 19 ( Standing up to the height of the top of the loading platform B up to the top panel Bb. The cargo support 21 and the delivery tip of the conveyor 19 are fixed via a plate-shaped reinforcing metal fitting extending in the width direction of the loading platform B so that the conveyor 19 does not lean, twist or the like.

  As shown in FIGS. 3 to 5, the cargo support body feeding mechanism 22 is disposed inside the traveling rail 22 a and a U-shaped traveling rail 22 a disposed in the front-rear direction along the side panel Bc of the loading platform B. Screw rod 22b, a nut body 22c that is attached to the side portion of cargo support body 21 and engages with screw rod 22b, and a cutout portion 22d that is formed in the vicinity of the rear end of traveling rail 22a. Become. The screw rod 22b has a structure in which a thin round screw rod is spirally wound around the circumferential surface of the round screw rod at intervals, and is synchronized with the moving chain 24 via a linkage member 29 such as a gear or a chain. Then, it is driven to rotate. The nut body 22c has a wavy engagement cross section that engages with the spiral of the screw rod 22b. The cut portion 22 d forms a space portion that allows the cargo fixture 23 to be attached to and detached from the cargo support body feeding mechanism 22 in accordance with the size of the cargo P.

  As shown in FIGS. 4 and 5, the cargo fixture 23 prevents the cargo P loaded by the rope from collapsing, and is fitted to the outside of the traveling rail 22 a of the cargo support body feeding mechanism 22. A body portion 23a formed in a U-shape, a roller 23b that is rotatably supported on the upper and lower sides of the body portion 23a and rolls on a plurality of surfaces of the traveling rail 22a of the cargo support body feeding mechanism 22, and an inner portion of the body portion 23a. A protrusion 23c that protrudes from the central portion of the side surface and enters the spiral interval of the screw rod 22b of the cargo support body feeding mechanism 22, and a rope hook that protrudes from the central portion of the outer surface of the main body portion 23a and is hung by a rope Part 23d. The main body portion 23a has a size (horizontal width) that can enter the cut portion 22d of the cargo support body feeding mechanism 22 (see FIG. 4). The protrusion 23c moves in the axial direction of the screw rod 22b in response to the rotational drive of the screw rod 22b of the cargo support body feed mechanism 22, and moves the entire cargo fixture 23 along the traveling rail 22a.

  As shown in FIGS. 3 and 4, the moving chain 24 is composed of a link chain meshing with a gear, and is endlessly attached to sprockets 30 and 31 disposed on the front side and the rear side of the floor surface Ba of the loading platform B. 2 are arranged in the front-rear direction of the loading platform B, and two are arranged in parallel in the width direction of the loading platform B. The sprockets 30 and 31 correspond to the two moving chains 24 on the rotating shafts 32 and 33 arranged with the axis lines set in the width direction of the loading platform B on the front side and the rear side of the floor surface Ba of the loading platform B. Thus, a pair with an interval is supported. On the rear side of the loading platform B near the sprockets 30 and 31, an auxiliary sprocket 34 that narrows the interval between the endless reciprocating lines of the moving chain 24 is installed. A drive transmission sprocket 35 is fixed to the rotary shaft 32 on the rear side of the loading platform B. One portion of the moving chain 24 and the cargo support 21 (the leading end of the conveyor 19) are fixed by a fixing bracket 36.

  As shown in FIGS. 3, 4, 7, and 8, the drive unit 25 is installed at the rear end of the floor surface Ba of the loading platform B and can be switched between forward and reverse rotation directions by a control circuit. Consists of. The drive unit 25 is mounted on a housing 37 that houses the drive transmission mechanism U and encloses lubricating oil, and is unitized with the drive transmission mechanism U so as to be easily mounted on the vehicle.

  As shown in detail in FIG. 7 and subsequent figures, the drive transmission mechanism U is configured with a drive body 1, a driven body 2, 3, a cam 4, a one-way clutch 5, and a shutter mechanism 6 as main parts.

  As shown in FIGS. 9 and 14, the drive body 1 is formed by joining a cylindrical cup-shaped casing 1b on both sides of a ring-shaped drive gear 1a in the middle and assembling the hollow body with bolts 1c. As shown in FIG. 8, the casing 1b has a bearing hole 1ba drilled in the center, and three through holes 1bb are drilled radially around the bearing hole 1ba through an angle of 120 degrees. A bearing 7 that supports the cam 4 is fixed in the bearing hole 1ba. A sleeve 8 that receives a slide of a pin body 5ba of a clutch pin 5b (to be described later) of the one-way clutch 5 is fixed to the through-hole 1bb.

  As shown in FIGS. 9, 15, and 17, the driven bodies 2 and 3 are formed in a disk shape that comes into contact with both end faces (outer side faces) of the casing 1b of the driving body 1, respectively. A total of six oil holes 2b and 3b are drilled in a radial manner at an angle of 120 degrees around the bearing holes 2a and 3a. The driven gears 10 and 11 in which the bearing 9 that supports the cam 4 is fixed to the inner peripheral portion are fixed to the bearing holes 2a and 3a. The oil holes 2 b and 3 b ensure the circulation of the lubricating oil sealed in the housing 37.

  Therefore, the driven bodies 2 and 3 are arranged on the same axis as the driving body 1 via the cam 4.

  As shown in FIGS. 9 to 13, the cam 4 is disposed so as to penetrate the driving body 1 and the driven bodies 2 and 3 as stepped fixed shafts whose both end portions which are the small diameter portions 4 a are fixed to the housing 37. Thus, a guide groove 4c is provided in the circumferential surface of the large-diameter portion 4b located inside the hollow drive body 1 in the circumferential direction. The guide groove 4c includes two parallel main grooves 4ca and a communication groove 4cb that communicates the main grooves 4ca in an oblique direction. As shown in FIG. 4, the main groove 4ca of the guide groove 4c has a relatively deep groove bottom portion 4caa and a relatively shallow groove bottom portion 4cab, and the deep groove bottom portion 4caa and the groove bottom A stepped portion 4cac is formed between the shallow portion 4cab. In addition, the shallow part 4cab of the groove bottom of the main groove 4ca of the guide groove 4c is formed only in a part close to the side where the connecting groove 4cb intersects the acute groove with respect to the main groove 4ca.

  Therefore, the moving bodies 2 and 3 are supported so as to be rotatable with respect to the cam 4.

  As shown in FIGS. 9 to 13, 15, and 17, the one-way clutch 5 includes a slider 5a, a clutch pin 5b, an elastic member 5c, and a clutch groove 5d. As shown in FIGS. 9 and 13, the slider 5 a includes a deformed ring plate 5 aa, a center hole 5 a which is drilled in the center of the ring plate 5 aa and through which the cam 4 is inserted, and the casing 1 b of the driver 1 passes through the slider 5 a. Three holes 5ac that are radially perforated at an angle of 120 degrees in the vicinity of the outer periphery of the ring board 5aa corresponding to the hole 1bb and allow the clutch pin 5b to slide, and a hole 5ab for sliding in the ring board 5aa Is a guide hole 5ad that is formed by piercing each other at a 60 degree angle and a 120 degree angle, a total of six guide holes 5ad, and both ends are fixed to the casing 1b of the driver 1 through the guide holes 5ad. Between the six guide shafts 5ae arranged in parallel with the cam 4 and the two guide holes 5ad adjacent to the ring disc 5aa at an angle of 120 degrees toward the center of the ring disc 5aa. A guide 5af that is slidably supported in a slidable manner and whose tip moves in the guide groove 4b of the cam 4, and a coil spring that elastically biases the guide 5af toward the center of the ring disk 5aa (in the direction of the guide groove 4b of the cam 4). It consists of 5ag. The clutch pin 5b is inserted into the sliding hole 5ab of the slider 5a, and has three round rod-shaped pin bodies 5ba having an axial length that are selectively projected and retracted from the through hole 1bb of the casing 1b of the driving body 1. It consists of ring-shaped elastic member receivers 5bb that are respectively fixed slightly toward the center from both ends of the pin body 5ba. The elastic member 5c is formed of a coil spring, and is externally mounted on the pin body 5ba of the clutch pin 5b and is elastically mounted between the elastic member receiver 5bb on both sides of the clutch pin 5b and the ring disk 5aa of the slider 5a. . As shown in FIGS. 15 and 17, the clutch groove 5 d includes oil holes 2 b and 3 b on the contact surface (inner side surface) of the driven bodies 2 and 3 with respect to the end surface of the casing 1 b in the circumferential direction. It extends in an arc shape and is engaged with the pin body 5ba of the clutch pin 5b. The flat portion 5da has a constant groove bottom depth, and the groove bottom depth is inclined to form a flat portion 5da. It consists of inclined part 5db provided only in the one end part side. The oil holes 2b and 3b of the followers 2 and 3 are positioned in the flat portion 5da of the clutch groove 5d. As shown in FIG. 17, the inclined portion 5db of the clutch groove 5d is disposed opposite to the flat portion 5da at the followers 2 and 3 on both sides.

  As shown in FIGS. 15 and 16, the shutter mechanism 6 includes a shutter piece 6a, a support shaft 6b, a guide pin 6c, and a torsion coil spring 6d. The shutter piece 6a is formed in an arc piece shape, is in contact with the contact surface of the driven body 1 of the driven bodies 2 and 3 with the end surface of the casing 1b, and is rotatably supported by the support shaft 6b. The clutch groove 5d is opened and closed, and a curved inclined portion 6aa is provided on an arc-shaped outer peripheral portion that partially overlaps the clutch groove 5d of the one-way clutch 5, and a guide that receives a guide pin 6c near the tip of the rotation is provided. A groove 6ab is provided. The support shaft 6b is fixed to the contact surface of the driven body 1 of the driven bodies 2 and 3 with the end surface of the casing 1b and is disposed near the inclined portion 5db of the clutch groove 5d of the one-way clutch 5, and rotates the shutter piece 6a. Is supported so as to be able to overlap a part of the flat portion 5da of the clutch groove 5d of the one-way clutch 5. The guide pin 6c is fixed to the contact surface of the driven body 1 of the driven bodies 2 and 3 with the end surface of the casing 1b and is disposed in the vicinity of the flat portion 5da of the clutch groove 5d of the one-way clutch 5, and the shutter piece 6a rotates. To guide you. The torsion coil spring 6d is coaxially mounted on the support shaft 6b and is locked to the shutter piece 6a and the followers 2 and 3, and urges the shutter piece 6a to close the clutch groove 5d of the one-way clutch 5. is doing.

  Further, in this drive transmission mechanism U, as shown in FIGS. 7 and 8, the output shafts 14 and 15 and the output sprocket are connected to the driven gears 10 and 11 fixed to the driven bodies 2 and 3 via the relay gears 12 and 13, respectively. 16 and 17 are meshingly connected. The output sprockets 16 and 17 are exposed from the housing 37. Further, a relay gear 18 such as a bevel gear is meshedly connected to the drive gear 1 a of the drive body 1 from a drive motor that is a drive unit 25. A drive transmission chain 38 is hung between one output sprocket 16 and a drive transmission sprocket 35 that drives the moving chain 24. A drive transmission chain 39 is hung between the other output sprocket 17 and the drive transmission sprocket 27 that drives the roller 20. Accordingly, lubricating oil for smoothly operating the drive transmission mechanism U having a mechanical structure is enclosed in the housing 37, and the output sprockets 16 and 17 connected to the moving chain 24 and the roller 20 are opposed to be exposed from the housing 37. Therefore, the connection of the lubrication system and the arrangement of the connecting relay member become unnecessary, and a degree of freedom can be obtained at the mounting position on the vehicle.

  According to this drive transmission mechanism U, the one-way clutch 5 is provided between the driving body 1 and the driven bodies 2 and 3, the cam 4 is provided inside the driving body 1, and the one-way clutch 5 and the cam 4 are connected to the driving body 1. Since the followers 2 and 3 are not exposed, the whole is made compact. Further, since the one-way clutch 5 has an engagement structure of the clutch pin 5b and the clutch groove 5d, and the clutch pin 5b is operated by the slide of the slider 5a regulated by the cam 4, the structure is simplified and the manufacturing is inexpensive and easy. Become.

  In this drive transmission mechanism U, as shown in FIG. 9A, when the drive unit 25 is rotationally driven in one direction (forward direction), the drive body 1 (drive gear 1a) is forwarded via the relay gear 19. Rotated in the direction. At this time, when the guide element 5af of the slider 5a of the one-way clutch 5 is in the main groove 4ca on the right side of the guide groove 4c of the cam 4, the step portion 4cac is formed from the shallow portion 4cab to the deep portion 4caa of the groove bottom. Move down the main groove 4ca on the right side of the drawing as it is (see FIGS. 10A and 11A), and if it is in the main groove 4ca on the left side of the drawing of the guide groove 4c of the cam 4, the deep part of the groove bottom From 4caa, before the shallow portion 4cab at the bottom of the groove, it is regulated by the stepped portion 4cac, changed in direction to the connecting groove 4cb, and displaced and moved to the main groove 4ca on the right side of the drawing (FIG. 10B, FIG. 11B). reference). As for the movement of the guide 5af of the slider 5a of the one-way clutch 5, the smoothness is ensured by the coil spring 5ag, and the accuracy is ensured by being guided to the guide groove 4c of the cam 4 arranged as a fixed shaft. Yes.

  As a result, the ring disk 5aa supporting the guide 5af of the slider 5a of the one-way clutch 5 is slid to the right side of the drawing. The sliding of the ring board 5aa of the slider 5a of the one-way clutch 5 compresses the elastic member 5c on the right side of the drawing and slides the clutch pin 5b to the right side of the drawing. The clutch pin 5b slid by the one-way clutch 5 is engaged with a clutch groove 5d provided on the driven body 2 on the right side of the drawing. Regarding the engagement of the clutch pin 5b and the clutch groove 5d of the one-way clutch 5, the sliding of the clutch pin 5b is caused by the elastic force of the elastic member 5c having an impact absorbing function, and the pin body 5ba of the clutch pin 5b is the inclined portion of the clutch groove 5d. Smooth and non-impact properties are ensured by slowly entering from 5 db so as to slide into the flat portion 5 da. As shown in FIG. 16, the pin body 5ba of the clutch pin 5b that has entered the flat portion 5da of the clutch groove 5d of the one-way clutch 5 comes into contact with the inclined portion 6aa of the shutter piece 6a of the shutter mechanism 6, and the clutch groove The shutter piece 6a of the shutter mechanism 6 that closes 5d is automatically opened. As for the contact of the clutch body 5ba of the clutch pin 5b of the one-way clutch 5 with the inclined portion 6aa of the shutter piece 6a of the shutter mechanism 6, the shock is mitigated by the inclined portion 6aa having a slidable curved shape, and the shutter mechanism. 6 is ensured, the timing of opening the clutch groove 5d of the one-way clutch 5 by the shutter mechanism 6 is accurate, and the collision between the clutch pin 5b of the one-way clutch 5 and the shutter piece 6a of the shutter mechanism 6 is prevented. The

  The engagement of the clutch pin 5b and the clutch groove 5d of the one-way clutch 5 brings about a rotation following the rotation of the driving body 1 in the positive direction of the driven body 2 on the right side of the drawing. Then, a rotational output in the positive direction of the output sprocket 16 on the right side of the drawing is generated via the driven gear 10, the relay gear 12, and the output shaft 14. That is, the drive transmission chain 38 that drives the movement chain 24 is driven via the drive transmission chain 38.

  When the driving body 1 and the driven body 2 are rotated in the forward direction, the engagement between the clutch pin 5b of the one-way clutch 5 and the clutch groove 5d provided in the driven body 3 on the left side of the drawing is released. The driven body 3 on the left side of the drawing is free to rotate and is not driven to rotate. Since the shutter piece 6a of the shutter mechanism 6 closes the clutch groove 5d of the one-way clutch 5 provided on the driven body 3 on the left side of the drawing, the clutch pin 5b does not inadvertently enter the clutch groove 5d. .

  Further, as shown in FIG. 7B, when the drive unit 25 is rotationally driven in the other direction (reverse direction), the drive body 1 (drive gear 1a) is rotated in the reverse direction via the relay gear 19. . At this time, when the guide 5af of the slider 5a of the one-way clutch 5 is in the main groove 4ca on the right side of the drawing of the guide groove 4c of the cam 4, the step portion is formed from the deep part 4caa of the groove bottom to the shallow part 4cab of the groove bottom. 4cac, the direction of the connecting groove 4cb is changed, and the displacement is moved to the main groove 4ca on the left side of the drawing (see FIGS. 10B and 12A). In the case of the main groove 4ca, the stepped portion 4cac is lowered from the shallow portion 4cab of the groove bottom to the deep portion 4caa of the groove bottom, and the main groove 4ca on the left side of the drawing is moved as it is (FIGS. 10A and 12B). reference).

  As a result, the ring disc 5aa supporting the guide 5af of the slider 5a of the one-way clutch 5 is slid to the left side in the drawing. The sliding of the ring board 5aa of the slider 5a of the one-way clutch 5 compresses the elastic member 5c on the left side of the drawing and slides the clutch pin 5b to the left side of the drawing. The clutch pin 5b slid by the one-way clutch 5 is engaged with a clutch groove 5d provided on the driven body 3 on the left side of the drawing.

  Engagement of the clutch pin 5b and the clutch groove 5d of the one-way clutch 5 causes rotation following the rotation of the driving body 1 in the reverse direction of the driven body 3 on the left side of the drawing. Then, a rotational output in the reverse direction of the output sprocket 18 on the right side of the drawing is generated via the driven gear 11, the relay gear 13, and the output shaft 15. That is, the drive transmission sprocket 27 for driving the roller 20 is driven through the drive transmission chain 39.

  When the driving body 1 and the driven body 3 are rotated in the reverse direction, the engagement between the clutch pin 5b of the one-way clutch 5 and the clutch groove 5d provided in the driven body 2 on the right side of the drawing is released. The driven body 2 on the right side of the drawing is free to rotate and is not driven to rotate. Since the shutter piece 6a of the shutter mechanism 6 closes the clutch groove 5d of the one-way clutch 5 provided on the driven body 2 on the right side of the drawing, the clutch pin 5b does not accidentally enter the clutch groove 5d. .

  According to this drive transmission mechanism U, the switching of the transmission path of the driving force is automatically executed in response to the switching of the rotation direction on the drive side without providing an operation unit.

  According to the vehicle loading / unloading device 400, since the conveyor 19 does not have a two-stage arrangement structure, the roller 20, the drive unit 25 that is a drive mechanism, and the drive transmission mechanism U are used by using the recesses on the floor surface Ba of the load carrier B. The installation surface which becomes the loading surface of the conveyor 19 on which the cargo P is loaded can be lowered. Therefore, it is possible to ensure a large amount of loading by effectively using the volume of the loading platform B for loading the cargo P. In addition, since the installation space is reduced by avoiding the two-stage arrangement structure of the conveyor 19, the fixed loading platform B of the vehicle T that has already been used can be easily retrofitted. It should be noted that the fact that the drive unit 25 is composed of one unit also contributes to a reduction in the mounting space. Further, the drive transmission mechanism U attached to the drive unit 5 is provided with a compactness by providing the one-way clutch 5 and the cam 4 between the drive body 1 and the driven bodies 2 and 3. Useful for installation using recesses. Further, the interval between the endless reciprocating lines of the moving chain 24 being reduced by the auxiliary sprocket 34 also contributes to lowering the arrangement surface that becomes the loading surface of the conveyor 19 on which the cargo P is loaded.

  In order to use this vehicle loading / unloading device 400, the conveyor 19 is driven from the roller 20 by driving the moving chain 24 by the drive unit 25, whereby the cargo P unloaded and loaded on the rear side of the loading platform B is loaded on the loading platform. Move to the front side of B. At this time, the roller 20 is in a free-rotatable state and does not interfere with the feeding of the conveyor 19. Further, since the cargo support body feeding mechanism 22 is also linked and driven, the cargo support body 21 and the cargo fixture 23 are also moved to the front side of the loading platform B following the conveyor 19. In addition, the conveyor 19 is driven by the drive unit 25 in the reverse direction of the roller 20 and wound around the roller 20, so that the cargo P loaded on the front side of the loading platform B is unloaded from the loading platform B when unloading. It will be moved to the rear side. At this time, the moving chain 24 is in a state allowing free rotation, and there is no problem in winding the conveyor 19. The cargo support feeding mechanism 22 is also reversed by the reversal of each part accompanying the winding of the conveyor 19, and the cargo support 21 and the cargo fixture 23 also move to the front side of the loading platform B following the conveyor 19. Be done

  In this use, as is clear from the description of the drive transmission mechanism U described above, the feeding and winding of the conveyor 19 are automatically changed by switching the rotation direction of the drive unit 25.

  According to this form, first, in the cargo center S, the cargo P is placed on the base 200d of the transport device 200 by the loading device 300. At this time, the amount of cargo P fully loaded on one vehicle T is piled up on the base 200d of the transport device 200 in the stacked state loaded on the loading platform B of the vehicle T.

  Subsequently, the cargo P placed on the base 200d of the transport apparatus 200 is sent to the transport platform 100a, and the transport platform 100a into which the cargo P is sent is moved to the vehicle T to be loaded by the lateral movement mechanism 100b.

  As a result, the cargo P can be quickly moved to the stacked state of the amount fully loaded on one vehicle T, and the cargo handling with respect to the vehicle T can be performed sufficiently efficiently.

  The cargo P conveyed to the rear side of the vehicle T by the conveyance platform 100a and the lateral movement mechanism 100b of the conveyance device 200 is loaded on the loading platform B as it is by the vehicle handling device 400 installed in the vehicle T.

  As a result, since the handling of the vehicle T in the back of the loading platform B of the vehicle T as well as the handling of the vehicle T is almost unnecessary, the labor burden on the driver of the vehicle T can be sufficiently reduced. The relay stand 100c of the transfer device 200 facilitates the transfer of the cargo P from the transfer stand 100a of the transfer device 200 to the vehicle loading / unloading device 400.

  In addition, the unloading operation of the cargo P is also performed for the unloading of the cargo P, so that the cargo handling with respect to the vehicle T can be performed sufficiently efficiently, and the labor burden on the drivers of both T can be sufficiently reduced. it can.

100
Truck Yard 200
Conveying device 200a Conveying platform 200b Lateral movement mechanism 300 Loading device 400 Cargo handling device S Cargo center T Vehicle

Claims (4)

  It consists of a vehicle that carries the cargo and a cargo center that handles the cargo that is carried by the vehicle, and is placed in the truck yard where the vehicle stops at the cargo center with the rear side facing, and the cargo is delivered to the rear side of the vehicle. In a cargo handling system equipped with a transporting device for transporting, the truck yard has an area in which a plurality of vehicles are stopped in parallel, and the transporting device has a transport table for moving cargo forward and backward with respect to the rear side of the vehicle. A lateral movement mechanism that moves the carriage in the parallel direction of the vehicle with the cargo loaded thereon, and the vehicle is equipped with a vehicle handling device that performs a cargo handling operation on the loading platform on which the cargo is loaded. A characteristic cargo handling system.   2. The cargo handling system according to claim 1, wherein the transport platform of the transport device comprises a conveyor that transports cargo in a stacked state loaded on a vehicle platform.   3. The cargo handling system according to claim 2, wherein the carriage of the transportation device is configured to carry at least an amount of cargo that is fully loaded on one of the vehicles.   4. The cargo handling system according to any one of claims 1 to 3, wherein the vehicle handling system installed in the vehicle is for a vehicle in which a conveyor for moving the cargo in the front-rear direction of the cargo bed is installed on the floor surface of the cargo bed on which the cargo is loaded. In the cargo handling device, the conveyor is formed in a sheet shape and is wound around a roller installed on the rear side of the loading platform and connected so as to be able to be fed, and the moving chain is arranged so that the leading end is movable in the front-rear direction of the loading platform. The drive unit for driving the roller and the moving chain is made common, and the cam is used for automatic switching to drive the roller when the conveyor is wound up and to drive the moving chain when the conveyor is fed out. A cargo handling system having a drive transmission mechanism attached thereto.