Carrier locking part structure and carrier

Abstract

To provide a carrier capable of dealing with various carried bodies different in specification while simplifying a structure.SOLUTION: This carrier locking part structure comprises: a guide track; a base block 13; a guided part; and a fixed part. The guide track is installed on the upper part of a vehicle body. The base block 13 supports a lock member 15 that can lock a carried body. The guided part can move together with the base block 13 through guidance on the guide track. The fixed part can fix the base block 13 in position with respect to the guide track.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a locking structure for a transport vehicle, and to a transport vehicle. [Background technology]

[0002] 2. Description of the Related Art There are known transport vehicles used in factories and the like that are coupled with an object to be transported (see, for example, Patent Document 1).

[0003] The transport vehicle described in Patent Document 1 is an unmanned transport vehicle that moves along a specified travel route within a factory. The transported object (transported cart) transported by the transport vehicle has wheels that come into contact with the road surface and a loading shelf on which cargo is placed. A coupling device having a pair of L-shaped arms for gripping is installed on the top of the transport vehicle. The coupling device is capable of clamping the part of the transported object to be gripped by moving and rotating the pair of arms. A portal frame is provided inside the wheels at the four corners of the transported object, and the part to be gripped is provided at the top position of the portal frame.

[0004] The transport vehicle moves so as to slip under the gantry frame of the transported object, and in that state, the coupling device is activated and the pair of arms grip the target part. As a result, the transported object is coupled to the transport vehicle and transported to the destination position by following the movement of the transport vehicle. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2010-036644 A Summary of the Invention [Problem to be solved by the invention]

[0006] The transport vehicle described in Cited Document 1 can grasp a transported object with the arm portion of the coupling device as long as the gripping position and width of the transported object that can be grasped by the arm portion of the coupling device are constant, but it is difficult to handle transported objects with different specifications such as size and shape.

[0007] In addition, the transport vehicle described in the cited document 1 needs to accurately determine the gripping position relative to the transported object because it is difficult to adjust the gripping position of the arm with respect to the transported object. Therefore, in the case of the transport vehicle described in the cited document 1, it is necessary to provide a complex mechanism including various detection sensors to ensure reliable gripping (locking) of the transported object.

[0008] SUMMARY OF THE PRESENT DISCLOSURE In view of the above, the present invention provides a locking portion structure for a transport vehicle, and a transport vehicle, which can accommodate various transported objects having different specifications while simplifying the configuration. [Means for solving the problem]

[0009] The locking portion structure of a transport vehicle in one embodiment of the present invention comprises a guide track installed on the upper part of the vehicle body, a base block supporting a locking member capable of locking a transported object, a guided portion guided by the guide track and movable together with the base block, and a fixing portion capable of fixing the position of the base block relative to the guide track.

[0010] When changing the position of the locking member on the vehicle body, the locking portion structure of the above configuration releases the base block from being fixed by the fixing portion, and in this state, moves the base block and the guided portion to the desired position along the guide track. After this, the base block is fixed in position relative to the guide track by the fixing portion. This adjusts the locking position of the transported object by the locking member to an appropriate position. Therefore, by appropriately adjusting the position of the locking member on the vehicle body in this manner, it becomes possible to lock transported objects of various specifications with different sizes and shapes. Therefore, when the locking portion structure of this configuration is adopted, transported objects of various specifications with different sizes and shapes can be transported by the transport vehicle.

[0011] The guide track may be constituted by a guide groove having a recess that opens in one direction and extends in a direction intersecting the vertical direction, and a slip-out prevention flange that protrudes inward from the opening edge of the recess, the guided portion is movably accommodated within the recess, and the fixed portion is constituted by a connecting device that can press and fix the guided portion to the slip-out prevention flange.

[0012] In this case, when changing the position of the locking member on the vehicle body, the pressure of the guided part against the slip-out prevention flange (guide groove) is released, and in this state, the base block and the guided part are moved to the desired position along the guide groove. At this time, the guided part moves inside the guide groove. After this, the guided part is pressed and fixed to the slip-out prevention flange of the guide groove by the connector. This allows the locking position of the transported body by the locking member to be adjusted to an appropriate position. In this configuration, the guided part connected to the base block is stably supported by the guide groove with the flange to prevent slipping out. Therefore, when this configuration is adopted, the locking member that locks the transported object can be stably supported by the vehicle body.

[0013] The guide groove may open vertically upward, and an upper edge of the opening of the guide groove may be formed by a substantially horizontal flat surface.

[0014] In this case, the base block supporting the locking member is stably supported by the approximately horizontal flat surface of the upper edge of the opening of the guide groove. Also, because the upper edge of the opening of the guide groove on which the base block is placed is a flat surface, the base block can be moved smoothly above the guide groove when adjusting the position of the locking member.

[0015] It is desirable that a plurality of the guide grooves be provided on the upper portion of the vehicle body, and that the flat surfaces of the upper edges of the openings of each of the guide grooves be at the same height.

[0016] In this case, it is possible to stably place luggage across the upper edges of the multiple guide grooves. Therefore, when this configuration is adopted, the luggage can be transported smoothly by utilizing the dead space above the guide grooves.

[0017] The guide track may be detachably attached to the vehicle body.

[0018] In this case, the guide track can be replaced with an appropriate one with a different size and shape depending on the object to be transported, the place to be transported, etc. Therefore, when this configuration is adopted, it becomes possible to handle objects with more diverse specifications and to handle various usage environments.

[0019] The guide track may be provided in a plurality of divided blocks.

[0020] In this case, the position and orientation of the guide track on the vehicle body can be appropriately set according to the specifications of the transported object while suppressing the space occupied by unnecessary guide tracks. Therefore, when this configuration is adopted, it is possible to accommodate transported objects of various specifications while reducing the size and weight of the transport vehicle.

[0021] A transport vehicle according to one embodiment of the present invention comprises a vehicle body having drive wheels, a guide track installed on the upper part of the vehicle body, a base block supporting a locking member capable of locking a transported object, a guided portion guided by the guide track and movable together with the base block, and a fixing portion capable of fixing the position of the base block relative to the guide track.

[0022] The transport vehicle having the above configuration can lock objects of various sizes and shapes by appropriately adjusting the position of the locking member on the vehicle body. Therefore, when the transport vehicle having this configuration is used, objects of various sizes and shapes can be transported.

[0023] It is desirable that a portion of the guide track is disposed directly above the drive wheel.

[0024] In this case, the load of the guideway, the locking member, etc. acts on the drive wheels from directly above, so the driving force of the drive wheels can be efficiently applied to the road surface when the transport vehicle is traveling, thereby maintaining good running stability and turning ability of the transport vehicle. Effect of the Invention

[0025] In the above-mentioned locking structure of the transport vehicle, the base block and the guided part are movable along the guide track on the vehicle body, and the base block is fixed to the guide track by the fixing part. Therefore, the position of the locking member that locks the transported object can be appropriately adjusted together with the base block. Therefore, when the locking structure of the transport vehicle according to the present invention is adopted, it is possible to simplify the configuration and accommodate various transported objects with different specifications. [Brief description of the drawings]

[0026] [Figure 1] FIG. 2 is a perspective view of a transport vehicle according to the first embodiment. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Diagram 3] FIG. 4 is a perspective view showing a guided portion and a fixed portion according to the first embodiment. [Figure 4] FIG. 4 is a perspective view of the guided portion and the fixed portion of the first embodiment, viewed from a different angle. [Diagram 5] Cross-sectional view taken along line VV in Figure 1. [Figure 6] FIG. 4 is a perspective view showing another mode of use of the transport vehicle of the first embodiment. [Figure 7] FIG. 13 is a perspective view showing a support portion of a locking member according to a second embodiment. [Figure 8] FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. [Figure 9] FIG. 11 is a perspective view of a transport vehicle according to a third embodiment. [Figure 10] FIG. 13 is a perspective view of a transport vehicle according to a fourth embodiment. [Figure 11] FIG. 13 is a perspective view of a transport vehicle according to a fifth embodiment. [Figure 12] FIG. 13 is a perspective view of a transport vehicle according to a sixth embodiment. [Figure 13] FIG. 13 is a cross-sectional view similar to FIGS. 2 and 8 of a seventh embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Next, embodiments of the present invention will be described with reference to the drawings. In each embodiment described below, common parts are given the same reference numerals, and some overlapping explanations are omitted. In addition, in the appropriate places of each figure, an arrow UP pointing vertically upward, an arrow FR pointing forward of the transport vehicle, and an arrow LH pointing leftward as it faces forward are indicated. In the following, the direction indicated by the arrow UP is referred to as "up" and the opposite side is referred to as "down". Furthermore, the direction including the direction indicated by the arrow FR is referred to as the "front-rear direction", and the direction including the direction indicated by the arrow LH is referred to as the "left-right direction".

[0028] First Embodiment FIG. 1 is a perspective view of a transport vehicle 1 of the present embodiment. The transport vehicle 1 of this embodiment is an unmanned transport vehicle that moves autonomously within a factory or site under the control of a control device. The transport vehicle 1 has drive wheels 3 installed below the four corners of a roughly rectangular parallelepiped vehicle body 2. Mecanum wheels are used for these drive wheels 3.

[0029] The drive wheel 3 includes a plurality of barrels 4, which are barrel-shaped rolling elements, and a barrel holder 5 that rotatably supports the plurality of barrels 4 on the outer periphery. The barrel holder 5 of each drive wheel 3 is driven by a drive unit (not shown) that includes a motor and a reducer. The plurality of barrels 4 are rotatably held on the outer periphery of the barrel holder 5 in a state inclined with respect to the holder rotation axis of the barrel holder 5.

[0030] The transport vehicle 1 can move freely in various directions by the control device individually controlling the rotation direction and torque of each drive wheel 3 (barrel holder 5). The drive wheels 3 arranged on the left and right of the transport vehicle 1 are set so that the inclination directions of the barrels 4 held on the outer circumference of the barrel holder 5 are opposite to each other.

[0031] The upper surface of the vehicle body 2 is formed flat. A bogie locking block 10 is attached to the upper surface of the vehicle body 2. The bogie locking block 10 is detachably attached to the upper surface of the vehicle body 2 by bolt fastening or the like. The bogie locking block 10 is provided with a rectangular plate-shaped base plate 11 having approximately the same size as the upper surface of the vehicle body 2. A plurality of guide grooves 12 extending along the front-rear direction are provided in parallel on the upper surface side of the base plate 11. In this embodiment, two guide grooves 12 are provided on each of the right and left sides of the center position of the base plate 11 in the left-right direction. The guide grooves 12 form a guide track in this embodiment that extends in a direction intersecting the vertical direction.

[0032] In this embodiment, two base blocks 13 are attached to each of the two outermost guide grooves 12 out of the four guide grooves 12. A locking member 15 capable of locking a transported cart 14, which is one form of a transported object, is attached to each base block 13. The locking member 15 includes a support pipe 16 standing upward from the base block 13, and two upper and lower clamp devices 17 attached to the support pipe 16 so that their heights can be adjusted.

[0033] The transported cart 14 is provided with a loading plate 18 on which an article can be placed or on which a worker can stand as a foothold, four legs 19 extending downward from the vicinity of the four corners of the loading plate 18, and casters 20 attached to the lower end of each leg 19. Two locked pipes 21 extending in the left-right direction are attached to the two front left-right legs 19 at a distance from each other. Similarly, two locked pipes 21 extending in the left-right direction are attached to the two rear left-right legs 19 at a distance from each other. Each of these locked pipes 21 is disposed at a higher position than the cart locking block 10 of the transport vehicle 1. The casters 20 are attached to the lower end of each leg 19 so as to be able to swing. Therefore, when an external force in a predetermined direction acts on the transported cart 14 from the transport vehicle 1, the casters 20 rotate in the direction in which the external force acts. Therefore, the transported cart 14 can move in the same direction as the propulsion direction of the transport vehicle 1.

[0034] When the transported cart 14 is being transported, the transport vehicle 1 is placed between the left and right leg pillars 19 of the transported cart 14. At this time, the cart locking block 10 on the upper part of the transported cart 1 is positioned below the mounting plate 18 of the transported cart 14. After this, locking members 15 are attached to the base blocks 13 on the left and right guide grooves 12 so that the support pipes 16 stand upward. The locking members 15 are placed at the front and rear of the transported cart 14, respectively, and the upper and lower clamp devices 17 are connected to the corresponding locked pipes 21 of the transported cart 14.

[0035] Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1, and Fig. 3 is a perspective view of the guided block 25 to which a connector 30 (described later) is attached. Fig. 4 is a perspective view of the guided block 25 to which the connector 30 is attached, viewed from a different angle. Fig. 5 is a cross-sectional view taken along line VV in Fig. 1. As shown in FIG. 2 and FIG. 5, each guide groove 12 of the carriage locking block 10 is formed by joining a pair of groove forming blocks 22 having an L-shaped cross section to the upper surface of the base plate 11. The groove forming block 22 has an L-shaped cross section that extends long in one direction, and one end side of the L-shaped cross section is welded and fixed to the upper surface of the base plate 11. Between the other ends of the pair of groove forming blocks 22, a slit 23 (opening) of a certain width is formed extending along the extension direction of the groove forming block 22. In the guide groove 12 thus formed, a recess formed by the upper surface of the base plate 11 and the upright walls of the left and right groove forming blocks 22 extends in the front-rear direction (direction intersecting the vertical direction). In addition, a slip-out prevention flange 24 that protrudes inward is formed on the opening edge of the above-mentioned recess by the horizontal walls of the left and right groove forming blocks 22.

[0036] The guided block 25 is accommodated in the bag-shaped portion (the bag-shaped portion excluding the slit 23) of the guide groove 12 configured as described above so as to be movable in the front-rear direction. The guided block 25 is formed in a rectangular parallelepiped shape that is short in the vertical direction. As shown in Figs. 3 and 4, the guided block 25 has a screw hole 26 formed so as to penetrate in the vertical direction. A connector 30 having a male screw portion 27 is screwed into the screw hole 26. The connector 30 has a shaft portion 28 having a predetermined outer diameter smaller than the width of the slit 23 of the guide groove 12, the male screw portion 27 formed on one end side of the shaft portion 28, and a head portion 29 formed on the other end side of the shaft portion 28. The head portion 29 of the connector 30 is formed to have an outer diameter larger than the width of the slit 23. A tool engagement hole 29a into which a tightening tool is fitted is formed on the end face of the head portion 29.

[0037] In addition, chamfered portions 25a are provided at both corners of the lower end of the guided block 25. The chamfered portions 25a extend along the front-rear direction and prevent the guided block 25 from interfering with welded portions (weld beads) (not shown) between the base plate 11 and the left and right groove forming blocks 22. In this embodiment, the guided block 25 is formed in a square shape when viewed from above, but the guided block 25 may be formed in a rectangular shape when viewed from above whose length in the front-rear direction is longer than that in the left-right direction. In this case, it is preferable that the length in the left-right direction of the guided block 25 is longer than the width in the left-right direction of the bag-shaped member of the guide groove 12. This makes it possible to prevent the guided block 25 from being accommodated in the guide groove 12 in an incorrect orientation. In this embodiment, the guided block 25 constitutes a guided portion that is movable together with the base block 13 while being guided by the guide groove 12 (guide track).

[0038] The base block 13 includes a first block 13F placed on the upper edge of the slit 23 of the guide groove 12, and a second block 13S fastened to the first block 13F by a plurality of bolts 31 while being stacked on the upper surface of the first block 13F. The first block 13F is made of a thick metal plate whose width in the left-right direction is wider than the width of the upper edge of the guide groove 12. The upper edge of the slit 23 on which the first block 13F is placed is formed of a substantially horizontal flat surface. The flat surfaces of the upper edge of the slit 23 of each guide groove 12 are all formed to be at the same height.

[0039] The second block 13S includes a plate portion 32 made of a metal plate that is placed on the upper surface of the first block 13F, and a metal tubular portion 33 that is welded and fixed to approximately the center of the upper surface of the plate portion 32. The plate portion 32 is fastened and fixed to the first block 13F by a plurality of bolts 31. The tubular portion 33 stands upward from the upper surface of the plate portion 32 so that its axis faces vertically upward. The lower end of the support pipe 16 of the locking member 15 can be fitted into the outer circumferential surface of the tubular portion 33. The locking member 15 is supported by the base block 13 with the lower end of the support pipe 16 fitted into the tubular portion 33.

[0040] Here, the length in the front-rear direction of the plate portion 32 of the second block 13S is shorter than the length in the front-rear direction of the first block 13F. A through hole 34 (see FIG. 2) is formed in the first block 13F in a portion extending forward from the second block 13S and in a portion extending rearward from the second block 13S, penetrating in the vertical direction. The shaft portion 28 of the connector 30 is inserted into this through hole 34 from above. The shaft portion 28 that penetrates the through hole 34 has the male screw portion 27 at the tip end screwed into the guided block 25 in the guide groove 12. When the connector 30 is further tightened by the tightening tool in this way, the screwing depth between the male screw portion 27 and the guided block 25 gradually increases, and the upper edge of the guided block 25 is pressed against the left and right slip-out prevention flanges 24 of the guide groove 12. As a result, the left and right slip-out prevention flanges 24 are firmly clamped and fixed by the head portion 29 of the connector 30 and the guided block 25. As a result, the base block 13 supporting the corresponding locking member 15 is fixed in position relative to the guide groove 12 . When the fastening of the connector 30 is loosened from this state, the fixing position of the base block 13 can be readjusted.

[0041] In addition, in the present embodiment, the bogie locking block 10 fixed to the vehicle body 2 is provided with four guide grooves 12 arranged in parallel in the left-right direction, so that any guide groove 12 can be selected and the base block 13 can be fixed in position with respect to the selected guide groove 12. Therefore, the installation width of the locking member 15 supported by the base block 13 and its position in the left-right direction can be freely adjusted.

[0042] The multiple groove forming blocks 22 that make up the guide groove 12 are heavy and sturdy structures, but in this embodiment, these groove forming blocks 22 are arranged directly above the four drive wheels 3. Therefore, a part of the guide track (guide groove 12) is arranged directly above the drive wheels 3. In this case, the load of the guide track (guide groove 12), the locking member 15, etc. acts on the drive wheels 3 from directly above, so that the driving force of the drive wheels 3 can be efficiently applied to the road surface when the transport vehicle 1 is traveling. Therefore, the travel stability and turning ability of the transport vehicle 1 can be maintained excellent.

[0043] In the locking structure of the transport vehicle 1 of this embodiment, the base block 13 supporting the locking member 15 and the guided block 25 in the guide groove 12 are movable along the guide groove 12 on the vehicle body 2. The base block 13 can be fixed at any position on the guide groove 12 by a connector 30, which is a fixing part. When changing the position of the locking member 15 on the vehicle body 2, the fixed position of the base block 13 by the connector 30 is released, and in this state, the base block 13 and the guided block 25 are moved to the desired position along the guide groove 12. After this, the base block 13 is fixed in position relative to the guide groove 12 by the connector 30. This allows the locking position of the transported cart 14 by the locking member 15 to be adjusted to an appropriate position.

[0044] Therefore, the locking portion structure of this embodiment can lock transported vehicles 14 of various specifications with different sizes and shapes by appropriately adjusting the support position of the locking member 15 on the vehicle body 2 as described above. Therefore, transported vehicles 14 of various specifications with different sizes and shapes can be transported by the transport vehicle 1. Therefore, when the locking portion structure of this embodiment is adopted, it is possible to simplify the configuration and to accommodate various transported carriages 14 with different specifications.

[0045] In addition, in the locking portion structure of this embodiment, the guide track for guiding the guided block 25 (guided portion) together with the base block 13 is formed by the guide groove 12. The guide groove 12 has a recess that opens upward (in one direction) and extends in the front-rear direction (direction intersecting the vertical direction), and a slip-out prevention flange 24 that protrudes inward is provided at the opening edge of the recess. The guided block 25 (guided portion) is movably accommodated in the recess of the guide groove 12, and can be pressed and fixed to the slip-out prevention flange 24 by tightening the connector 30, which is a fixing portion. Therefore, the guided block 25 connected to the base block 13 is stably supported by the guide groove 12 with the slip-out prevention flange 24. Therefore, when this configuration is adopted, the locking member 15 that locks the transported cart 14 can be supported more stably with respect to the vehicle body 2.

[0046] In addition, in the locking portion structure of this embodiment, the slit 23 of the guide groove 12 opens vertically upward, and the upper edge of the slit 23 is configured as a substantially horizontal flat surface. Therefore, the base block 13 supporting the locking member 15 is stably supported by the substantially horizontal flat surface of the upper edge of the slit 23. In addition, in the case of this configuration, since the upper edge of the slit 23 on which the base block 13 is placed is a flat surface, it is possible to smoothly move the base block 13 above the guide groove 12 when adjusting the position of the locking member 15.

[0047] Furthermore, in the locking structure of this embodiment, the upper surfaces of the guide grooves 12 spaced apart in the left-right direction are formed of flat surfaces at the same height. Therefore, as shown in Fig. 6, luggage 40 can be stably placed across the upper edges of the guide grooves 12. Fig. 6 is a perspective view similar to Fig. 1 for explaining how luggage 40 is placed. Therefore, when the locking portion structure of this embodiment is adopted, the dead space above the guide groove 12 can be effectively utilized, allowing the luggage 40 to be transported smoothly.

[0048] Furthermore, in the locking section structure of this embodiment, the carriage locking block 10 in which the guide groove 12 (guide track) is formed is detachably attached to the vehicle body 2 by bolt fastening or the like. Therefore, the guide groove 12 (guide track) can be replaced with an appropriate one having a different size or shape depending on the transported carriage 14 to be transported and the place to which it is transported. Therefore, when this configuration is adopted, it becomes possible to accommodate transported carriages 14 with a wider variety of specifications, and also to accommodate various usage environments.

[0049] <Second embodiment> FIG. 7 is a perspective view showing the structure of the support portion of locking member 15 of this embodiment, and FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. The locking portion structure of this embodiment differs from that of the first embodiment only in the structure of the base block 113 that supports the locking member 15, and other portions are configured similarly to those of the first embodiment. The base block 113 includes a first block 113F that is detachably fixed to the guide groove 12 by the guided block 25 and a connector 30, and a second block 113S that is fixed to the upper portion of the first block 113F by a plurality of bolts 31.

[0050] A fitting hole 42 is formed in the approximate center of the first block 113F, penetrating the first block 113F in the up-down direction. The inner diameter of the fitting hole 42 is set to be approximately the same as the outer diameter of the lower end side of the support pipe 16 of the locking member 15. The lower end of the support pipe 16 is fitted into the fitting hole 42.

[0051] The second block 113S includes a plate portion 132 fixed to the upper surface of the first block 113F by a plurality of bolts 31, and a tubular portion 133 protruding upward from approximately the center of the plate portion 132. A through hole 43 having approximately the same diameter as the fitting hole 42 of the first block 113F is formed in the plate portion 132 at the same position as the fitting hole 42 of the first block 113F. The tubular portion 133 is formed with the same inner diameter as the through hole 43. The lower end of the locking member 15 is fitted into the fitting hole 42 of the thick-walled block 113F through the tubular portion 133 and the through hole 43.

[0052] In addition, a plurality of reinforcing ribs 44 are fixed to the outer circumferential surface of the tubular portion 133. The lower end of each reinforcing rib 44 is fixed to the upper surface of the plate portion 32. The tilt of the tubular portion 133 is restricted by these plurality of reinforcing ribs 44. In addition, after the lower end of the support pipe 16 is fitted into the fitting hole 42 of the first block 113F through the tubular portion 133 and the through hole 43, the support pipe 16 is fixed to the tubular portion 133 by a screw 45 that penetrates the peripheral wall of the tubular portion 133.

[0053] In the locking portion structure of this embodiment, the lower end of the support pipe 16 penetrates the second block 113S and the first block 113F and is fitted into the tubular portion 133, the through hole 43, and the fitting hole 42. Therefore, the lower end of the support pipe 16 can be held from the radially outside with a sufficiently deep fitting margin. Furthermore, in this embodiment, a plurality of reinforcing ribs 44 are fixed to the outer circumferential surface of the tubular portion 133 of the second block 113S, and the lower surfaces of these reinforcing ribs 44 are fixed to the upper surface of the plate portion 132. Therefore, the collapse of the support pipe 16 that locks the transported cart can be strongly restricted. Therefore, when the locking portion structure of this embodiment is adopted, various transported carriages having different specifications can be firmly locked by the locking members 15 without wobbling.

[0054] <Third embodiment> FIG. 9 is a perspective view of a transportation vehicle 201 according to this embodiment. The transport vehicle 201 of this embodiment is configured with two separate carriage locking blocks 210A, 210B, separated from one another, rather than a single carriage locking block detachably fixed to the upper surface of the vehicle body 2. The front carriage locking block 210A is provided with a base plate 11A having a front-rear length shorter than half the front-rear length of the upper surface of the vehicle body 2. Four guide grooves 12 extending along the front-rear direction are provided in parallel in the left-right direction on the upper surface side of the base plate 11A. Similarly, the rear carriage locking block 210B is provided with a base plate 11B having a front-rear length shorter than half the front-rear length of the upper surface of the vehicle body 2. Four guide grooves 12 extending along the front-rear direction are provided in parallel in the left-right direction on the upper surface side of the base plate 11B.

[0055] The front bogie locking block 210A and the rear bogie locking block 210B are arranged spaced apart from each other in the front-rear direction on the upper surface of the vehicle body 2. Similar to the first embodiment described above, base blocks for supporting locking members are detachably attached to the guide grooves 12 of the front and rear bogie locking blocks 210A and 210B.

[0056] <Fourth embodiment> FIG. 10 is a perspective view of a transport vehicle 301 of this embodiment. In the transport vehicle 301 of this embodiment, two carriage locking blocks 310A, 310B are detachably fixed to the upper surface of the vehicle body 2, spaced apart from each other in the front and rear. Two guide grooves 12 extending in the left-right direction are formed on the upper surface sides of the base plates 11A, 11B of each of the front and rear carriage locking blocks 310A, 310B. In the case of this embodiment, a base block for supporting a locking member is detachably attached to each guide groove 12, as in the first embodiment described above.

[0057] <Fifth embodiment> FIG. 11 is a perspective view of a transport vehicle 401 of this embodiment. In the transport vehicle 401 of this embodiment, two bogie locking blocks 210A, 310B are detachably fixed to the upper surface of the vehicle body 2, spaced apart from each other in the front and rear directions. The front bogie locking block 210A has four guide grooves 12 extending in the front-rear direction formed on the upper surface side of the base plate 11A, and two guide grooves 12 extending in the left-right direction formed on the upper surface side of the rear bogie locking block 310B. In the case of this embodiment, a base block for supporting a locking member is detachably attached to each guide groove 12, as in the first embodiment described above.

[0058] Sixth Embodiment FIG. 12 is a perspective view of a transport vehicle 501 of this embodiment. In the transport vehicle 501 of this embodiment, two carriage locking blocks 510A, 510B are detachably fixed to the front and rear of the upper surface of the vehicle body 2. Each of the front and rear carriage locking blocks 510A, 510B has a plurality of groove forming pieces 50 fixed to each base plate 11 via a support portion 51.

[0059] The groove constituent pieces 50 are formed of rectangular plate materials of the same size. The groove constituent pieces 50 are arranged in a matrix shape with a certain gap between them in the front-rear and left-right directions. In this embodiment, the arrangement of the groove constituent pieces 50 forms a plurality of guide grooves 12v extending in the front-rear direction and a plurality of guide grooves 12l extending in the left-right direction. In this embodiment, the guide grooves 12v and 12l are provided with detachable base blocks for supporting the locking members, as in the first embodiment. In this embodiment, the base block can be adjusted to any desired fixed position in the front-rear and left-right directions along the guide grooves 12v, 12l of each of the carriage locking blocks 510A, 510B.

[0060] In the locking portion structures of the third to sixth embodiments, a carriage locking block having a plurality of guide grooves 12 (12v, 12l) is divided into two blocks. Therefore, in these embodiments, the positions and orientations of the guide grooves 12 (12v, 12l) on the vehicle body 2 can be appropriately set according to the specifications of the carriage to be transported while suppressing the space occupied by unnecessary guide grooves 12 (12v, 12l). Therefore, when these configurations are adopted, the carriages 201 to 501 can be made small and lightweight while being compatible with carriages of various specifications.

[0061] 12, in particular, a large number of guide grooves 12v extending in the front-rear direction and guide grooves 12l extending in the left-right direction are simultaneously formed by a plurality of groove forming pieces 50 arranged in a matrix. Therefore, when the configuration of this embodiment is adopted, the degree of freedom in adjusting the position of the base block (locking member) is increased, making it possible to accommodate transported carriages with a wider variety of specifications. 12, the guide grooves 12v and 12l are formed by a plurality of groove forming pieces 50 arranged in a matrix in each of the carriage locking blocks 510A, 510B arranged separately in the front and rear. However, the carriage locking block may be formed of a single block, and the guide grooves 12v and 12l may be formed in the block in a similar manner.

[0062] Seventh embodiment FIG. 13 is a cross-sectional view similar to FIGS. 2 and 8 of the support portion of the locking member 15 of this embodiment. In the locking portion structure of this embodiment, a guide track installed on the upper part of the vehicle body 2 is configured by a guide rail 60. The guide rail 60 includes a support part 61 standing up from the upper surface of the base plate 11, and a rail body 62 formed at the upper end of the support part 61 so as to be wider in the left-right direction than the support part 61. In addition, the base block 613 supporting the locking member 15 includes a first block 613F supported on the upper surface of the rail body 62 of the guide rail 60, and a second block 613S overlapped and fixed on the upper surface of the first block 613F.

[0063] The first block 613F has a pair of guide arms 65 that extend downward from the left and right side edges in a hook shape (L shape) and face the side and bottom surfaces of the rail main body 62 of the guide rail 60. The bottom surface of the upper wall of the first block 613F and the pair of guide arms 65 form a guide groove 70 that encloses the periphery of the rail main body 62. In the base block 613, the guide groove 70 of the first block 613F is guided in the front-rear direction by the rail main body 62 of the guide rail 60. In this embodiment, a pair of guide arms 65 formed integrally with the first block 613F constitute the guided portion.

[0064] The second block 613S includes a plate portion 32 fastened to the upper surface of the first block 613F by a plurality of bolts 31, and a tubular portion 33 protruding upward from the plate portion 32. The tubular portion 33 supports the support pipe 16 of the locking member 15 in a fitted state, which is the same as that of the first embodiment.

[0065] A screw hole 68 is formed in the upper wall of the first block 613F at a central position in the left-right direction, penetrating in the up-down direction. A through hole 67 is formed in a position corresponding to the screw hole 68 of the plate portion 32 of the second block 613S. A shaft portion 71a of a fixing bolt 71 penetrating the through hole 67 of the plate portion 32 is screwed into the screw hole 68 of the first block 613F. The fixing bolt 71 is tightened from above the plate portion 32 by a tightening tool. When the fixing bolt 71 is tightened to a predetermined amount or more, the tip portion of the shaft portion 71a is pressed against the upper surface of the rail main body 62 of the guide rail 60. As a result, the base block 613 is fixed in position relative to the guide rail 60. In this embodiment, the fixing portion capable of fixing the position of the base block 613 relative to the guide rail 60 (guide track) is constituted by a fixing bolt 71.

[0066] As described above, in the locking portion structure of this embodiment, the base block 613 supporting the locking member 15 and the guide arm 65 serving as the guided portion are integrally formed, and these are movable along the guide rail 60. The base block 613 can be fixed at any position on the guide rail 60 by the fixing bolt 71 serving as the fixing portion. Therefore, although the specific configurations of the guide track, guided portion, fixing means, etc. of the locking portion structure of this embodiment differ from those of the first embodiment, it is possible to obtain the same basic effects as those of the first embodiment described above. That is, transported vehicles of various specifications with different sizes and shapes can be locked by appropriately adjusting the support position of the locking member 15 on the vehicle body 2. Therefore, even when the locking portion structure of this embodiment is adopted, it is possible to deal with various transported vehicles of different specifications while simplifying the configuration.

[0067] The present invention is not limited to the above embodiment, and various design changes are possible without departing from the gist of the present invention. For example, in the above embodiment, the transported cart 14 is used in which the legs 19 protrude downward from the four corners of the loading plate 18 and the casters 20 are attached to the lower ends of the legs 19, but the structure and shape of the transported cart 14 are not limited to this. The transported cart 14 may have other structures and shapes as long as it can move on the road using wheels or the like.

[0068] In addition, in the above embodiment, an unmanned transport vehicle is used as the transport vehicle, but the transport vehicle may be a manned transport vehicle with a driver on board.

[0069] Furthermore, in the above embodiment, the locking member 15 including the support pipe 16 and the pair of clamp devices 17 is employed, but the locking member is not limited to this configuration as long as it can lock the transported cart 14 while being supported by the base block 13. For example, the portion supported by the base block 13 may be a structure other than a pipe material, and the portion that locks the transported cart 14 may be a locking mechanism other than the clamp devices 17.

[0070] Furthermore, in the third to sixth embodiments, each block having a guide track is fixed to the upper surface of the vehicle body 2 of the transport vehicle by bolt fastening or the like, but the position of at least one of these blocks may be adjustable by an actuator. Also, the number of blocks installed on the upper surface of the vehicle body 2 is not limited to two. The number of blocks may be three or more.

[0071] In the above embodiment, the guide track is described as being a guide groove and a guide rail, but the guide track is not limited to these. For example, the guide track may be a structure in which a guide groove and a guide rail are combined.

[0072] In the above, an example in which the transport vehicle transports the transported cart has been described, but the object to be transported by the transport vehicle is not limited to the transport vehicle. The object to be transported by the transport vehicle may be, for example, a shelf, a pallet, a forklift, a lift, a crane, a robot, etc.

[0073] In addition, among the embodiments disclosed in this specification, those that are configured with multiple objects may be integrated, and conversely, those that are configured with one object may be divided into multiple objects. Regardless of whether they are integrated or not, it is sufficient that they are configured to achieve the object of the invention. [Explanation of symbols]

[0074] 1,201,301,401,501…Transport vehicle 2. Vehicle body 3...Drive wheel 12...Guide groove (guide track) 13,113,613…Base block 14...Transported vehicle (transported object) 15...Locking member 24...Flange for preventing slipping 25...Guided block (guided part) 30...Connector (fixed part) 60...Guide rail (guide track) 65...Guide arm (guided part) 71...Fixing bolt (fixing part)

Claims

1. A guide rail installed on the upper part of the vehicle body; A base block supporting a locking member capable of locking a transported object; a guided portion that is guided by the guide track and is movable together with the base block; a fixing portion capable of fixing the position of the base block relative to the guide track; A locking structure for a transport vehicle.

2. the guide track is configured by a guide groove having a recess that opens in one direction and extends in a direction intersecting the vertical direction, and a slip-out prevention flange that protrudes inward from an opening edge of the recess; The guided portion is movably accommodated in the recess, The fixing portion is configured by a connector capable of pressing and fixing the guided portion to the fall-off prevention flange. The locking structure of the transport vehicle according to claim 1.

3. The guide groove opens vertically upward, The upper edge of the opening of the guide groove is formed as a substantially horizontal flat surface. The locking structure of a transport vehicle according to claim 2.

4. The guide groove is provided in a plurality of portions on the upper portion of the vehicle body, The flat surfaces of the upper edges of the openings of the guide grooves are at the same height. The locking structure of the transport vehicle according to claim 3.

5. The guide rail is detachably attached to the vehicle body. The locking structure of the transport vehicle according to claim 1.

6. The guide track is provided in a plurality of divided blocks. The locking structure for a transport vehicle according to claim 5.

7. A vehicle body having drive wheels; A guide track installed on an upper portion of the vehicle body; A base block supporting a locking member capable of locking a transported object; a guided portion that is guided by the guide track and is movable together with the base block; a fixing portion capable of fixing the position of the base block relative to the guide track; Equipped with Transport vehicle.

8. A portion of the guide track is disposed directly above the drive wheel. The transport vehicle according to claim 7.

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