Adjustment device of vehicle stop position for loading

Abstract

To provide an adjustment device of a vehicle stop position for loading that enables a vehicle to be easily positioned at a stop position for loading in a short time, and enables reduction of an equipment cost for adjusting the stop position.SOLUTION: An adjustment device of a vehicle stop position for loading includes: a rear wheel positioning unit 10 that is formed at a position lower than a floor surface 22a of a floor skeleton 22, guides a truck 3 in a retreat direction, and positions a rear wheel of the truck 3 at a stop position for loading T; and a front wheel positioning unit 50 that is provided in the floor skeleton 22, on which a front wheel 33 of the truck 3 whose rear wheel 32 has been positioned by the rear wheel positioning unit 10 is placed, and is movable in a horizontal direction Y orthogonal to a travel direction of the truck 3.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a vehicle loading stop position adjustment device. [Background technology]

[0002] Conventionally, in cargo storage facilities such as logistics warehouses, cargo pick-up operations could not be performed outside the warehouse's business hours, such as at night, and trucks that arrived during those hours had to wait until the opening time of business. This situation resulted in long working hours for truck drivers and was inefficient. In recent years, therefore, efforts have been made to improve the efficiency of work by automatically removing and loading cargo from the truck bed using unmanned cargo pick-up and transport devices such as unmanned forklifts. In order to perform this unmanned operation, it is necessary to position the truck at the desired cargo pick-up stop position.

[0003] As a method for positioning the truck, a method is adopted in which position information such as images of the truck stopped at the loading stop position detected by a sensor or camera installed on the building side is obtained, and for example, the truck driver fine-tunes the position of the truck while looking at the detected images. Alternatively, a method is also known in which the position and attitude of the truck is detected, and the detection data is received by the unmanned loading and transporting device, so that the unmanned loading and transporting device recognizes the position of the truck and moves accordingly.

[0004] An example of an apparatus for detecting a stopping position of a vehicle using a sensor or the like and controlling the position of the vehicle is shown in Patent Document 1. Patent document 1 describes a device that, when the front and rear wheels of a vehicle are placed on a first front and rear wheel conveyor installed in the storage berth, drives the front and rear wheel conveyor and a second front and rear wheel conveyor installed in the storage lift to move the vehicle laterally from the storage berth to the storage lift.The device sends a distance detection signal from a lateral movement distance measuring device to a control device, and when the vehicle reaches the center of the storage lift, the control device sends a stop signal to the drive motors of each conveyor, stopping each of these conveyors and positioning the vehicle in the center of the storage lift. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 7-10289 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the conventional vehicle position adjustment method as shown in Patent Document 1, it is necessary to install multiple sensors and cameras on the building side to acquire the vehicle position information. Therefore, there is a problem that the installation and maintenance of the sensors and cameras requires a lot of time and effort, and furthermore, the cost for the parts of the sensors and cameras, the control system for the detected position information, etc. is high. In addition, even if the vehicle position information is acquired by a sensor or a camera, the truck driver must use the position information to adjust the stopping position so that the truck is at the desired stopping position. Therefore, the time it takes to adjust the stopping position varies depending on the driver's driving skill, and in some cases, it may be necessary to repeatedly acquire the position information and adjust the stopping position. Therefore, there is a demand for the stopping position to be adjusted quickly and easily without being affected by the driver's skill, and there is room for improvement in this regard.

[0007] The present invention has been made in consideration of the above-mentioned problems, and has an object to provide a vehicle loading stop position adjustment device that can position a vehicle at a loading stop position easily and quickly, and also reduce the equipment costs for adjusting the stop position. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the vehicle loading stop position adjustment device of the present invention is a vehicle loading stop position adjustment device for positioning the vehicle at a loading stop position where luggage can be removed and loaded from the vehicle bed, and is characterized in that it comprises a rear wheel positioning unit formed at a position lower than the floor surface of the main body and guiding the vehicle in the backward direction to position the rear wheels of the vehicle at the loading stop position, and a front wheel positioning unit provided on the main body, on which the front wheels of the vehicle with their rear wheels positioned in the rear wheel positioning unit are placed, and which can be moved in the left-right direction perpendicular to the vehicle's direction of travel.

[0009] In the vehicle loading stop position adjustment device according to the present invention, when unloading and loading onto the vehicle bed, the vehicle is moved backwards and the rear wheels are guided to a rear wheel positioning section formed at a position lower than the floor surface of the vehicle body, thereby positioning the rear wheels in the front-rear and left-right directions. In the rear wheel positioning section, the part on which the front wheels are placed can be moved left-right, so the left-right position of the front wheels can be adjusted. As a result, the simply configured loading stop position adjustment device can easily and quickly position the vehicle at the loading stop position with the left-right positions of the rear and front wheels of the vehicle aligned. In addition, with the present invention, the cargo unloading stop position adjustment device can be installed in advance on the structure side of the building, eliminating the need to install expensive sensors or cameras, and also eliminating the need for maintenance of these and positioning control, thereby enabling a reduction in equipment costs for adjusting the vehicle stop position.

[0010] In the vehicle load-unloading stop position adjustment device according to the present invention, it is preferable that a rear wheel guideway formed on a floor surface of the rear wheel positioning portion is inclined so as to become lower toward the rear.

[0011] In this case, since the rear wheel guideway is inclined so as to become lower toward the rear, the rear wheels can be moved toward a predetermined stopping position by following the inclination.

[0012] In addition, in the vehicle cargo unloading stopping position adjustment device of the present invention, the guide side walls located on both the left and right sides of the vehicle of the rear wheel positioning section have a first guide wall located on the rear side and a second guide wall located forward of the first guide wall, and it is preferable that the distance between the left and right second guide walls gradually increases as the second guide walls move forward from the first guide wall.

[0013] In this case, since the road surface width between the second guideways on the entrance side (front side) of the rear wheel guideway is wider in the rear wheel positioning section, the rear wheels can easily enter the rear wheel guideway while moving the vehicle backward. This allows the rear wheels to be guided from the second guide wall to the first guide wall, and the vehicle can be efficiently guided to the loading stop position.

[0014] In addition, it is preferable that the vehicle cargo unloading stopping position adjustment device of the present invention is provided with a front wheel positioning unit that is housed in a recess of the main body, a stand on which the front wheels are placed, and a moving drive unit that moves the stand in the left-right direction.

[0015] With this configuration, when the front wheels are misaligned left or right with respect to the position of the rear wheels, the movement drive device is driven to move the frame together with the front wheels in either the left or right direction, so that the left and right positions of the rear wheels and front wheels of the vehicle are aligned. This allows the vehicle to stop at the loading stop position in a short time with a simple configuration.

[0016] In addition, in the vehicle loading stop position adjustment device of the present invention, it is preferable that the platform has a protrusion that covers the floor surface around the recess from above, and a sliding material is provided between the protrusion and the floor surface to reduce frictional resistance between the protrusion and the floor surface.

[0017] In this case, the gap between the floor surface around the recess and the base can be closed by providing a protruding portion of the base. Since the protruding portion is provided via a sliding material that reduces frictional resistance against the floor surface, the base with the front wheels of the vehicle placed on it can be moved smoothly and accurately in the left and right directions. Effect of the Invention

[0018] According to the vehicle load unloading stop position adjustment device of the present invention, a vehicle can be positioned at a load unloading stop position easily and quickly, and the equipment costs for adjusting the stop position can be reduced. [Brief description of the drawings]

[0019] [Figure 1] 1 is a plan view of a logistics warehouse equipped with a goods unloading stop position adjustment device according to an embodiment of the present invention. [Diagram 2] 2 is a cross-sectional view of a logistics warehouse taken along line II in FIG. 1. [Diagram 3] FIG. 2 is a plan view of the cargo unloading stopping position adjustment device. [Figure 4] 4 is a plan view of a state in which a truck is positioned at a loading stop position by the loading stop position adjustment device shown in FIG. 3. [Diagram 5] 4 is a cross-sectional view taken along line II-II of FIG. 3, the cross-sectional view being taken at the center in the left-right direction of the goods pick-up stopping position adjustment device. [Figure 6] FIG. 11 is a plan view of the front wheel positioning portion seen from above, with the protruding portion of the base omitted. [Figure 7] FIG. 7 is a cross-sectional view taken along the line III-III shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a vehicle loading stop position adjustment device according to an embodiment of the present invention will be described with reference to the drawings.

[0021] Fig. 1 is a plan view of a logistics warehouse 2 equipped with a goods pick-up stop position adjustment device 1 of the present embodiment. Fig. 2 is a cross-sectional view of the logistics warehouse 2 taken along line II shown in Fig. 1. 1 and 2, a vehicle loading stop position adjustment device 1 of this embodiment is applied to a logistics warehouse 2, which is a baggage storage facility. The loading stop position adjustment device 1 is a device for positioning a loading stop position T at which a baggage M can be automatically removed and loaded by an unmanned loading and conveying device 4 from a loading platform 31 of a truck 3 (vehicle).

[0022] The logistics warehouse 2 includes a luggage storage space 21 for storing luggage M, and a luggage pick-up stop space 20 having a luggage pick-up stop position adjustment device 1. The logistics warehouse 2 includes a floor structure 22. Reference numeral 23 shown in Figs. 1 and 2 denotes a column provided integrally with the floor structure 22.

[0023] The baggage storage space 21 is arranged on the left side of the paper in Figures 1 and 2 in the logistics warehouse 2. Multiple baggage pick-up stop spaces 20 (three in this case) are provided. The baggage pick-up stop spaces 20 are arranged adjacent to the right side of the baggage storage space 21 in Figures 1 and 2 in the logistics warehouse 2. The multiple baggage pick-up stop spaces 20 (20A, 20B, 20C) are arranged in the vertical direction of the paper in Figure 1.

[0024] 1 is the front-rear direction of the truck 3 when it is parked at the loading stop position T in the logistics warehouse 2, and is defined as the front-rear direction X, and the up-down direction of the paper (the direction perpendicular to the front-rear direction X when viewed from the direction perpendicular to the paper) is defined as the left-right direction Y. In the front-rear direction X, the right side of the paper is defined as the front side X1, and the left side of the paper is defined as the rear side X2. The truck 3 arranged in the loading stop space 20 is parked with the loading platform 31 on the rear side X2 and the driver's seat side on the front side X1.

[0025] In the logistics warehouse 2, the front of the loading stop space 20 is the entrance 20a of the truck 3. The truck 3 is stopped at the loading stop position T of the loading stop space 20 while retreating from the entrance 20a. Each loading stop space 20A, 20B, 20C is an area in which a space for the loading stop position adjustment device 1 and a space for the passage of the unmanned loading transport device 4 are secured on both the left and right sides of one truck 3 stopped at the loading stop position T. The baggage storage space 21 is located near the rear end of the truck 3 stopped at the loading stop position T. The floor surface of the loading stop space 20 is formed at a position lower than the floor surface of the baggage storage space 21. In other words, it is possible to adjust the height of the loading platform 31 of the truck 3 stopped at the loading stop position T to the floor surface of the baggage storage space 21.

[0026] The luggage storage space 21 has a plurality of luggage receiving sections 21A where luggage M received from a truck 3 is transported by an unmanned luggage pick-up and transport device 4 and stored in a stacked manner. The luggage M in the luggage receiving sections 21A is further loaded onto a truck 3 to be transported out by the unmanned luggage pick-up and transport device 4.

[0027] The unmanned article pick-up and transporting device 4 automatically transports the article M between the baggage storage space 21 and the loading platform 31 of the truck 3 positioned at the loading stop position T of the loading stop space 20. As described above, the unmanned article pick-up and transporting device 4 can automatically pick up and load the article M from both the left and right sides of the loading platform 31 of the truck 3. The unmanned article pick-up and transporting device 4 includes a first transporting device 4A that moves within the baggage storage space 21, and a second transporting device 4B that moves within the loading stop space 20. The article M is then handed over between the first transporting device 4A and the second transporting device 4B.

[0028] The unmanned article picking and transporting device 4 is, for example, a forklift, and is controlled to travel unmanned and to receive and load the article M. The unmanned article picking and transporting device 4 is equipped with a camera (not shown) for checking the position of the loading platform 31 of the truck 3 and the article M on the loading platform 31. The unmanned article picking and transporting device 4 is controlled to receive and load the target article M based on image information captured by the camera. In other words, in this embodiment, the truck 3 parked at the article picking stop position T is positioned at the desired position, so that the unmanned article picking and transporting device 4 is position-controlled only for the article M on the loading platform 31 of the positioned truck 3.

[0029] In this embodiment, the truck 3 has a stopping position detection unit (not shown) that detects that the truck 3 has been positioned at the loading stopping position T. This stopping position detection unit may be mounted on each unmanned goods picking and transporting device 4, or may be mounted on a centralized control unit (not shown) and transmit control information to a predetermined unmanned goods picking and transporting device 4. When the detection information is detected by the stopping position detection unit, the unmanned goods picking and transporting device 4 starts automatically removing and loading the goods M onto the loading platform 31 of the truck 3.

[0030] Next, a specific configuration of the goods pick-up stop position adjustment device 1 will be described with reference to Fig. 3 to Fig. 7. Fig. 3 is a plan view of the goods pick-up stop position adjustment device 1. Fig. 4 is a plan view of a state in which the truck 3 is positioned at the goods pick-up stop position T by the goods pick-up stop position adjustment device 1 shown in Fig. 3. Fig. 5 is a cross-sectional view taken along line II-II shown in Fig. 3, and is a cross-sectional view at the center of the goods pick-up stop position adjustment device 1 in the left-right direction.

[0031] 3 to 5, the cargo pick-up stopping position adjustment device 1 includes a rear wheel positioning unit 10 and a front wheel positioning unit 50. The cargo pick-up stopping position adjustment device 1 stops the truck 3 with its axle direction facing the front-rear direction X.

[0032] The rear wheel positioning section 10 is formed at a position lower than the floor surface 22a of the floor structure 22 (the floor surface of the cargo unloading parking space 20), and guides the truck 3 in the reverse direction to position the rear wheels 32 of the truck 3 at the cargo unloading parking position T. The rear wheel positioning section 10 has a rear wheel guideway 11 formed on the floor surface 22a, guide side walls 12 provided on both the left and right sides of the rear wheel guideway 11, and a car stop wall 13 located at the rear end of the rear wheel guideway 11. The road surface center line O of the rear wheel guideway 11 coincides with the front-to-rear direction X. In addition, the rear wheel guideway 11 is inclined so as to become lower from the front to the rear.

[0033] The guide side wall 12 guides the rear wheels 32 of the truck 3 in the front-rear direction X. The guide side wall 12 has a first guide wall 121 located on the rear side and a second guide wall 122 located forward of the first guide wall 121. A width dimension D1 in the left-right direction Y of the first guide wall 121 is set to be approximately the same dimension as the distance between the outer surfaces of the left and right rear wheels 32 of the truck 3. The second guide walls 122 are provided such that the distance between the left and right second guide walls 122 gradually increases as they move forward from the first guide wall 121. The width of the second guide walls 122 is set to, for example, 150 mm on each side.

[0034] As shown in FIG. 4, the front wheel positioning unit 50 is provided on the floor structure 22, and is provided movable in the left-right direction Y to place the front wheels 33 of the truck 3 whose rear wheels 32 are positioned on the rear wheel positioning unit 10 thereon.

[0035] Fig. 6 is a plan view of the front wheel positioning unit 50 from above, with the projection of the mount omitted. Fig. 7 is a cross-sectional view taken along line III-III shown in Fig. 6. As shown in Figures 6 and 7, the front wheel positioning unit 50 is accommodated in the recess 24 of the floor structure 22 and includes a platform 51 on which the front wheels 33 of the truck 3 (see Figures 2 and 4) are placed, and an extendable cylinder 52 (movement drive device) that moves the platform 51 in the left-right direction.

[0036] The recess 24 formed in the floor structure 22 has a rectangular shape in a plan view, and is disposed on the rear side X2 of the rear wheel positioning portion 10. One of the two opposing sides of the recess 24 faces the left-right direction Y, and the other of the two opposing sides faces the front-rear direction X. A pair of guide rails 53 extending along the left-right direction Y are provided at an interval from each other on a bottom surface 24a of the recess 24.

[0037] The platform 51 has a rectangular plate shape in a plan view, and is formed in a shape smaller than the recess 24. The platform 51 is disposed at a position where the front wheels 33 (see Figs. 2 and 4) of the truck 3 parked at the cargo unloading stop position T rest on an upper surface 51c of the platform 51. A sliding wheel 54 guided by each of a pair of guide rails 53 is provided on a lower surface 51a of the platform 51. Two sliding wheels 54 are provided for each guide rail 53. The sliding wheels 54 slide on the guide rails 53, allowing the platform 51 to move in the left-right direction Y.

[0038] The upper edge of the stand 51 has a protruding portion 55 that covers the floor surface 22a around the recess 24 from above. A sliding plate 56 (sliding member) that reduces frictional resistance between the protruding portion 55 and the floor surface 22a is provided between the protruding portion 55 and the floor surface 22a.

[0039] The sliding plate 56 is fixed to the floor surface 22a, and a material with a low coefficient of friction (friction reducing material) that reduces frictional resistance between the upper surface 56a and the lower surface 55a of the overhanging portion 55 is applied or attached to the upper surface 56a. As the sliding plate 56 having this friction reducing material, for example, a plate with the upper surface 56a processed with polytetrafluoroethylene or the like can be used. In this manner, the overhanging portion 55 of the stand 51 is placed on the sliding plate 56 so that it can move.

[0040] A telescopic cylinder 52 is provided between the pair of guide rails 53, with the telescopic cylinder 52 extending in the left-right direction Y. The telescopic cylinder 52 has a main body 52a at one end fixed to the bottom surface 24a of the recess 24 of the floor structure 22, and a telescopic tip 52b at the other end fixed to the base 51. The driving method of the telescopic cylinder 52 may be electric or hydraulic.

[0041] Here, the state in which the center of the frame 51 in the left-right direction Y coincides with the road surface center line O is defined as the initial position. The telescopic cylinder 52 is installed so that it can be extended in both the left-right direction Y at the initial position of the frame 51. The adjustment range of the frame 51 in the left-right direction Y is set to ±150 mm, for example. By extending the telescopic cylinder 52, the frame 51 moves in the left-right direction Y. The front wheels 33 of the truck 3 mounted on the frame 51 can be moved in the left-right direction Y together with the frame 51 to adjust their positions in the left-right direction Y. In other words, the positions of the front wheels 33 of the truck 3 in the left-right direction Y can be adjusted to coincide with the rear wheels 32.

[0042] Next, the operational procedure for unloading and loading the cargo M onto the loading platform 31 of the truck 3 that has entered the logistics warehouse 2 and parked at the cargo unloading stop position T will be specifically described. 1, 2 and 4, when the driver backs up the truck 3 from the entrance 20a of the logistics warehouse 2 and moves it toward the cargo pick-up stop position adjustment device 1 of the cargo pick-up stop space 20, the rear wheels 32 of the truck 3 are guided by the second guide wall 122 and the first guide wall 121 of the guide side wall 12 of the rear wheel positioning unit 10, in that order, and stop at the vehicle stop wall 13. This determines the position of the rear wheels 32 in the left-right direction Y and the front-rear direction X. At this time, the front wheels 33 are placed on the stands 51 of the front wheel positioning unit 50.

[0043] Here, the rear wheel guideway 11 is inclined so as to become lower toward the rear, so that the rear wheel 32 can move along the inclination toward the car stop wall 13. Also, in the rear wheel positioning section 10, the road surface width on the entrance side (front side X1) of the rear wheel guideway 11 is widened, so that the rear wheel 32 can easily enter the rear wheel guideway 11.

[0044] When the front wheels 33 are misaligned in the left-right direction Y with respect to the position of the rear wheels 32, the telescopic cylinder 52 is extended to move the platform 51 together with the front wheels 33 in either the left-right direction Y, as shown in Figs. 4 and 5. Then, the positions of the rear wheels 32 and the front wheels 33 of the truck 3 in the left-right direction Y can be aligned. This allows the truck 3 to be stopped at the loading stop position T. The position of the front wheels 33 and the rear wheels 32 in the left-right direction Y can be detected by using, for example, a sensor to detect the amount of deviation, and the amount of extension and contraction of the telescopic cylinder 52 (the amount of movement of the base 51) can be controlled.

[0045] 1 and 2, a stop position detection unit (not shown) detects that the truck 3 has been positioned at the loading stop position T. When the positioning of the truck 3 at the loading stop position T is completed, the driver of the truck 3 may transmit a completion signal.

[0046] Then, when the stopping position detection unit detects the detection information, the second conveying device 4B of the unmanned goods picking and conveying device 4 starts an operation of automatically removing the luggage M from the loading platform 31 of the truck 3 in the luggage picking stopping space 20. The second conveying device 4B temporarily stores the removed luggage M in the temporary storage area 21b on the floor surface 21a of the luggage storage space 21. After that, the first conveying device 4A of the unmanned goods picking and conveying device 4 automatically holds the luggage M in the temporary storage area 21b in the luggage storage space 21. The first conveying device 4A stores the held luggage M in a stacked manner in the luggage receiving section 21A of the luggage storage space 21.

[0047] Next, when the truck 3 for unloading luggage stops at the luggage pick-up stop position T and the stop position detection unit detects the detection information, the operation of loading luggage M onto the loading platform 31 of the truck 3 is started. In the luggage receiving unit 21A of the luggage storage space 21, the first transport device 4A of the unmanned luggage pick-up transport device 4 automatically holds the desired luggage M and temporarily stores it in the temporary storage area 21b. After that, in the luggage pick-up stop space 20, the second transport device 4B automatically holds the luggage M in the temporary storage area 21b and transports it toward the loading platform 31 of the truck 3, and the luggage M is automatically loaded into a predetermined position on the loading platform 31 of the truck 3.

[0048] Next, the operation of the above-mentioned cargo unloading stop position adjustment device 1 for the truck 3 will be described in detail with reference to the drawings. The load-taking stop position adjustment device 1 for the truck 3 according to this embodiment positions the truck 3 at a load-taking stop position T where load M can be removed from and loaded onto the bed 31 of the truck 3. The load-taking stop position adjustment device 1 for the truck 3 includes a rear wheel positioning unit 10 formed at a position lower than the floor surface 22a of the floor structure 22 and guiding the truck 3 in the backward direction to position the rear wheels of the truck 3 at the load-taking stop position T, and a front wheel positioning unit 50 provided on the floor structure 22, on which the front wheels 33 of the truck 3 whose rear wheels 32 are positioned in the rear wheel positioning unit 10 are placed and which is movable in the left-right direction Y perpendicular to the traveling direction of the truck 3.

[0049] In this manner, in this embodiment, when unloading and loading onto the bed 31 of the truck 3, the truck 3 is moved backward to guide the rear wheels 32 into the rear wheel positioning portion 10 formed at a position lower than the floor surface 22a of the floor structure 22, thereby positioning the rear wheels 32 in the front-rear direction X and the left-right direction Y. In the rear wheel positioning portion 10, the portion on which the front wheels 33 are placed can be moved in the left-right direction Y, so that the position of the front wheels 33 in the left-right direction Y can be adjusted. As a result, the cargo unloading stop position adjustment device 1 having a simple configuration can easily and quickly position the truck 3 at the cargo unloading stop position T with the positions of the rear wheels 32 and the front wheels of the truck 3 aligned in the left-right direction Y.

[0050] Furthermore, in this embodiment, the cargo unloading stop position adjustment device 1 can be installed in advance on the structure side of the logistics warehouse 2, eliminating the need to install expensive sensors or cameras, and also eliminating the need for maintenance of these and positioning control, thereby enabling a reduction in equipment costs for adjusting the stop position of the truck 3.

[0051] In addition, in this embodiment, the rear wheel guide path 11 formed on the floor surface 22a of the rear wheel positioning portion 10 is inclined so as to become lower toward the rear, so that the rear wheel 32 can be moved toward a predetermined stopping position by following the inclination.

[0052] In this embodiment, the guide side walls 12 located on both the left and right sides of the track 3 of the rear wheel positioning portion 10 have a first guide wall 121 located on the rear side and a second guide wall 122 located forward of the first guide wall 121. The distance between the left and right second guide walls 122 gradually increases as the second guide walls 122 move forward from the first guide wall 121. With this configuration, the road surface width between the second guide walls 122 on the entrance side (front side) of the rear wheel guideway 11 is widened in the rear wheel positioning section 10, so that the rear wheels 32 can easily enter the rear wheel guideway 11 while the truck 3 is moving backward. As a result, the rear wheels 32 can be guided from the second guide wall 122 to the first guide wall 121, and the truck 3 can be efficiently guided to the cargo unloading stop position T.

[0053] In this embodiment, the front wheel positioning unit 50 is accommodated in the recess 24 of the floor structure 22 and includes a platform 51 on which the front wheels are placed, and an extendable cylinder 52 that moves the platform 51 in the left-right direction Y. With this configuration, when the front wheels 33 are misaligned in the left-right direction Y with respect to the position of the rear wheels 32, the telescopic cylinder 52 is driven to move the platform 51 together with the front wheels 33 in either the left-right direction Y, so that the positions of the rear wheels 32 and the front wheels 33 of the truck 3 in the left-right direction Y are aligned. This allows the truck 3 to be stopped at the loading stop position T in a short time with a simple configuration.

[0054] In this embodiment, the stand 51 has a protruding portion 55 that covers the floor surface 22a around the recess 24 from above. A sliding plate 56 that reduces frictional resistance between the protruding portion 55 and the floor surface 22a is provided between the protruding portion 55 and the floor surface 22a. In this embodiment, by providing the protruding portion 55 of the platform 51, the gap between the floor surface 22a around the recess 24 and the platform 51 can be blocked. Since the protruding portion 55 is provided via the sliding plate 56 that reduces frictional resistance with respect to the floor surface 22a, the platform 51 with the front wheels 33 of the truck 3 placed thereon can be moved smoothly and accurately in the left-right direction Y.

[0055] As described above, the vehicle load unloading stop position adjustment device 1 according to this embodiment can position the truck 3 at the load unloading stop position T easily and quickly, and can also reduce the equipment costs for adjusting the stop position.

[0056] The above describes an embodiment of the vehicle loading stop position adjustment device according to the present invention, but the present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the present invention.

[0057] For example, in this embodiment, the rear wheel guideway 11 formed on the floor surface 22a of the rear wheel positioning unit 10 is configured to be inclined so as to become lower toward the rear, but is not limited to a configuration having such an inclined surface. For example, a configuration may be adopted in which a slope is provided at the step portion from the front wheel positioning unit 50 to the rear wheel positioning unit 10.

[0058] In addition, in this embodiment, the guide side wall 12 of the rear wheel positioning portion 10 is formed so that the distance between the left and right second guide walls 122 gradually increases as the second guide walls 122 move forward from the first guide wall 121, but this is not limited to this, and the distance between the left and right second guide walls 122 may be constant along the fore-and-aft direction X.

[0059] Furthermore, the configuration of the front wheel positioning unit 50 is not limited to the above-described embodiment. For example, instead of the telescopic cylinder 52 as a means for moving the platform 51 in the left-right direction Y, it is also possible to use another moving drive device, such as interposing a jack between the platform 51 and the recess 24 on both the left and right sides of the platform 51.

[0060] Furthermore, in this embodiment, the stand 51 is configured to have a protruding portion 55 that covers the floor surface 22a around the recess 24 from above, and further, a sliding plate 56 (sliding material) is provided between the protruding portion 55 and the floor surface 22a to reduce the frictional resistance between the protruding portion 55 and the floor surface, but it is also possible to omit the protruding portion 55 and the sliding plate 56. Also, instead of the sliding plate 56, another sliding support may be provided.

[0061] In the above embodiment, the truck 3 is used as the vehicle of the cargo unloading stop position adjustment device 1, but the shape and size of the vehicle are not particularly limited and may be any shape and size.

[0062] In addition, the components in the above-described embodiments can be replaced with well-known components as appropriate without departing from the spirit of the present invention. [Explanation of symbols]

[0063] 1 Parking position adjustment device 2 Logistics warehouse 3 Truck (vehicle) 4. Unmanned cargo handling and transportation device 4A First conveying device 4B Second conveyor 10 Rear wheel positioning part 11 Rear wheel guideway 12 Guide wall 121 First guide wall 122 2nd Guide Wall 13 Car stop wall 20 Loading stop space 21 Luggage storage space 22 Floor frame 22a Floor 24 Recess 31 Cargo Bed 32 Rear wheel 33 Front wheel 50 Front wheel positioning part 51 Mount 52 Telescopic cylinder (movement drive device) 55 Overhang 56 Sliding board (sliding material) M Luggage T Loading stop position X Anteroposterior direction Y left / right direction

Claims

1. A vehicle loading stop position adjustment device for positioning a loading stop position at which a load can be removed and loaded onto a loading platform of a vehicle, comprising: a rear wheel positioning portion that is formed at a position lower than the floor surface of the body and that guides the vehicle in a backward direction to position the rear wheels of the vehicle at the loading stop position; a front wheel positioning section provided on the body, on which a front wheel of the vehicle is placed with the rear wheel positioned in the rear wheel positioning section, and which is movable in a left-right direction perpendicular to a traveling direction of the vehicle; A vehicle loading stop position adjustment device comprising:

2. 2. The load-unloading stop position adjustment device for a vehicle according to claim 1, wherein a rear wheel guideway formed on a floor surface of the rear wheel positioning portion is inclined so as to become lower toward the rear.

3. the guide side walls located on both the left and right sides of the vehicle of the rear wheel positioning portion include a first guide wall located on the rear side and a second guide wall located forward of the first guide wall, 2. The load-unloading stop position adjustment device for a vehicle according to claim 1, wherein the second guide walls are arranged such that a distance between the left and right second guide walls gradually increases as the second guide walls move forward from the first guide wall.

4. The front wheel positioning portion is a stand that is accommodated in a recess of the body and on which the front wheels are placed; The vehicle loading stop position adjustment device according to claim 1 , further comprising: a movement drive device that moves the platform in the left-right direction.

5. The stand has a protruding portion that covers the floor surface around the recess from above, 5. The vehicle loading stop position adjustment device according to claim 4, further comprising a sliding member provided between said overhang and said floor surface for reducing frictional resistance between said overhang and said floor surface.

Images