JP5520697B2 - Transport cart - Google Patents

Description

  The present invention relates to a transporting carriage that has a carriage main body on which an article is placed, a moving wheel at a lower portion of the carriage main body, and an enclosure frame surrounding the article can be provided on the carriage main body.

  There are various types of transport carts that can perform nesting. For example, in Japanese Patent Application Laid-Open No. 2006-213117, the load support base (floor board) is flipped up and the right side panel (enclosure frame) is used as the back panel. It is possible to nest a plurality of units by folding and making the planar shape substantially L-shaped. However, in the transport cart having this configuration, it is necessary to fold the two members of the floor plate and the side frame, and there is a problem that the larger the transport cart, the heavier the floor plate becomes and the harder it is to work.

  On the other hand, if the base plate (floor plate) is divided into left and right as disclosed in Japanese Patent Application Laid-Open No. 2003-341521, the weight of one floor plate may be halved even if the size is increased. However, even when the floorboard is divided into two, in the type having a wide load support base (floorboard) at the front and rear, it is necessary to divide the floorboard into two at the front and back, but a structure in which the floorboard divided into two at the front and rear is flipped up on one side Then, the floorboard must be symmetrical with respect to the dividing line. Since each symmetric member has an individual shape, it cannot be shared, and related parts and structures are also required, so the number of parts is increased and mass productivity is not improved.

  Further, as is understood from the above-described two inventions, the conventional transport cart has a structure that cannot be used as a cart in the folded state even if the floor board and the surrounding frame can be folded. There seems to be little need to remove the floorboard, but some carts do not require a surrounding frame like an industrial wheelbarrow called a dolly or dolly, etc. Since the surrounding frame may get in the way, if the surrounding frame can be removed, the transport cart can be used as a dolly.

JP 2006-213117 A JP 2003-341521 A

  The present invention was developed in view of the above circumstances, and the problem is that it has a floor board divided into two parts so that it can be flipped up relatively easily even if it is enlarged to some extent, and the mass productivity is impaired. There is no delivery cart. Moreover, the other subject of this invention is providing the conveyance trolley | bogie which can be used as a dolly, when not using a surrounding frame.

  In order to solve the above-described problems, the present invention has a carriage main body on which an article is placed, and the carriage main body is located at both ends of the central frame in the transporting carriage having a moving wheel at a lower portion of the carriage main body. A base frame consisting of left and right side frames, front and rear floor boards that are placed before and after the center frame and both ends are supported by the left and right side frames and one side is supported by the center frame, and near the center of the left and right side frames The left and right floor boards are connected to one of the left and right side frames by hinges, and the other of the front and rear floor boards is connected to the other of the left and right side frames. It is combined at the hinge part, and measures are taken such that the front and back floor boards are supported by the underframe and the hinge part is rotated around the hinge part so that it stands up on the left and right side frames. .

  In the transport cart according to the present invention, it is essential that the cart body on which the article is placed is independent by itself. That is, it can be said that what has the wheel in the cart body is the minimum form necessary for the transport cart according to the present invention. By providing a surrounding frame on such a cart body, a transport cart with the surrounding frame is configured.

The main body of the carriage is composed of a central frame and left and right side frames located at both ends thereof, and front and rear of the central frame, which are arranged at the front and rear of the central frame and supported at both ends by the left and right side frames. And left and right column attachment parts provided upward near the center of the left and right side frames. The main body of the carriage has an arrangement structure in which both ends of the central frame are arranged higher than the central part of the left and right side frames, and a plurality of transport carts are nested with the floorboard raised in advance. Sometimes, the left or right side frame of the nesting passes under the central frame of the nesting side, and the left and right side frames of the nesting side and the left and right side frames of the nesting side are nested. It is desirable that the central frame of the nesting and the central frame of the nesting are arranged so as to be close to each other.
It is.

  One of the front and rear floor boards is connected to one of the left and right side frames at the hinge, the other of the front and rear floor boards is connected to the other of the left and right side frames at the hinge, and the front and rear floor boards are used as a frame. A state of supporting and a state of rotating around the hinge portion and standing up on the left and right side frames are configured. That is, the front and rear floor boards are set up to the left and right. This configuration means that the shape and structure of the front and back floor boards, their connection and support structure are rotationally symmetric about the center frame of the underframe.

  The left and right strut attachment portions can be attached to both ends of the center frame on the inside thereof, and the upper portion is opened and the lower end of the strut is inserted therein to constitute a means for standing the strut. The support column is a frame support column that surrounds the left and right of the article placed on the cart body, for example, and has a structure that is inserted into the inside or outside of the column mounting unit on the left and right sides of the cart body. And a horizontal beam portion extending in the front-rear direction parallel to the left and right side frames from the column trunk, and an enclosing portion provided so as to surround the front end of the horizontal beam portion. When the insertion part is inserted into the column attachment part, the bottom horizontal rail hits the upper end of the column attachment part. Will be.

  In addition, the surrounding frame surrounds the projecting end portion that becomes an engagement partner that engages with the engaging portion provided on either the front or rear end side of the left and right side frames when the insertion portion is inserted into the column mounting portion. A fastening member that joins the enclosure frame and the carriage main body in the state in which the insertion portion is inserted into the column attachment portion and the engagement portion and the projecting end portion are engaged with each other at the lower end portion of the front and rear It is desirable to have.

  In addition to the surrounding frame, an auxiliary frame can be provided to surround the front and back of the frame in a fence shape, or to be horizontally attached to an appropriate position of the left and right surrounding frames so that it can be used as a shelf. Since the auxiliary frame is attached to the left and right surrounding frames, the auxiliary frame has the same length as the interval between the left and right surrounding frames, and has the same width as the width of one surrounding frame.

  Since the present invention is configured and operates as described above, by having a floor board divided into two parts, it is possible to jump up relatively easily even if it is enlarged to some extent, and before and after being divided into two parts. Since the shape and structure of the floor plate and their combination and support structure are rotationally symmetric about the center frame of the underframe, there is an effect that mass productivity is not impaired. Moreover, according to this invention, even if it does not use a surrounding frame, the conveyance trolley | bogie which can be used as a dolly can be provided.

  Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. FIG. 1 is a front view showing an example of a transport cart 10 according to the present invention. The transport cart 10 has a cart body 11 on which an article is placed, and a caster with a brake is provided as a moving wheel 12 at the lower portion of the cart body 11. The left and right surrounding frames 13 and 14 surrounding the left and right of the article are provided on the cart body. The surrounding frames 13 and 14 can be attached to and detached from the cart body 11, and the cart body 11 can be used as, for example, a dolly with the surrounding frames 13 and 14 removed (see FIGS. 6 and 7). . Thus, in the transport cart 10 of the present invention, it is also important that the left and right surrounding frames 13 and 14 can be removed from the cart body 11.

  The cart body 11 forms the skeleton of the transport cart 10 and is the core part of the constituent elements. The cart body 11 in the present invention is arranged on a frame 15 comprising a central frame 18 and left and right side frames 16 and 17 located at both ends thereof, and on the left and right side frames 16 and 17 by being arranged before and after the central frame 18. Front and rear floor plates 19 and 20 that support both ends and one side (center frame side) is also supported by the center frame 18, and upward and left and right support columns 21 provided at the center of the left and right side frames 16 and 17. , 22 (see FIGS. 5 to 7). Since the left and right side frames 16 and 17 are arranged in parallel and the central frame 18 is arranged at the center of each of the underframes 15, the planar shape forms a slightly flat H shape.

  In the illustrated embodiment of the underframe 15, in order to position both ends of the center frame 18 above the center of the left and right side frames 16, 17, The center frame 18 is attached to the provided column attachment portions 21 and 22 by welding at both ends thereof. With this arrangement structure, the lower surface of the central frame 18 is slightly higher than the upper surfaces of the left and right side frames 16 and 17 (FIGS. 5 and 7). Either the left or right side frame of the nesting side (left side frame 16 in the illustrated embodiment) can pass.

  The left and right column attachment portions 21 and 22 are provided at the center portions of the left and right side frames 16 and 17 and at the outer end portion of the center frame 18. The left and right strut mounting portions 21 and 22 have a cylindrical structure, and in the case of the illustrated example, the insertion portion 41 of the strut trunk portion 40 of the surrounding frames 13 and 14 is inserted and attached to the inside. It is provided in the vertical direction and its upper part is open. The opening edge at the upper end of the cylindrical structure is also a portion that functions as a stopper that contacts the lower portion of the surrounding frame 13 and 14 and defines the insertion position when the surrounding frames 13 and 14 are attached.

  In the present invention, one of the front and rear floor plates 19 and 20 is coupled to one of the left and right side frames 16 and 17 by a hinge portion 23, and the other of the front and rear floor plates 19 and 20 is connected to the left and right side frames 16 and 17. Are connected to each other by a hinge portion 24, and the front and rear floor plates 19 and 20 are supported by the base frame 15, and the front and rear floor plates 19 and 20 are rotated about the hinge portions 23 and 24 and left and right. The side frames 16 and 17 are configured to take a state of rising.

  In the illustrated example, a mounting base 25 is provided on the left side frame 16 and the front floor plate 19 is coupled by a hinge portion 23, and a mounting base 26 is provided on the right side frame 17 and the rear floor plate 20 is connected to the hinge portion. 24. This structure means that the front and rear floor plates 19 and 20 are attached rotationally symmetrically with respect to the center of the base frame 15 having an H-shaped planar shape. For this structure, the left and right side frames 16 and 17 are attached. As for the parts from the mounting bases 25 and 26 to the mounting bases 25 and 26, all the necessary shapes are one kind, and there is no need for a dedicated part with a distinction between left and right. Therefore, it contributes to a significant improvement in production efficiency.

  Similarly to the other components of the present invention, the floor plates 19 and 20 have shapes and structures that do not need to be distinguished. As shown in detail in FIG. 8, the front and rear floor plates 19, 20 form a skeleton structure with several longitudinal longitudinal members 27 and transverse members 28 in the width direction, and have structural strength on the upper surfaces thereof. A corrugated floor material 29 is stretched, and the front and rear floor plates 19, 20 have the same structure. Further, the front and rear floor plates 19 and 20 have a locking portion 30 projecting outward in a step shape on one side portion as a portion for supporting one side on the central frame 18 (FIGS. 8A and 8C). In a state where the locking portion 30 is supported by the central frame 18, the cross members 28 at both the left and right ends are placed on the left and right side frames 16 and 17, and the upper surface of the floorboard is almost horizontal.

  The front and rear floor plates 19 and 20 are coupled to the left and right side frames 16 and 17 by hinge portions 23 and 24 at one end portions, respectively, but the left and right side frames 16 are secured by lock portions 31 and 32 at the other end portion. , 17 so as to be detachably engaged with each other, and the configuration of the lock portions 31, 32 is the same. Referring to FIG. 8, a convex portion 33 projecting downward from the cross member 28 is provided at one end portion of the floor plates 19, 20, and the convex portion 33 corresponds to the right frame 17 corresponding to the underframe 15. It enters the recesses 34 formed on the upper surfaces of the front side and the rear side of the left side frame 16. The protrusion 33 is provided with a lock claw 35, is urged by an elastic member 36 in the locking direction, is provided so as to be able to engage with a counterpart in the recess 34, and can be detached by operating a handle 37. Is provided. Reference numeral 38 denotes a handle operating opening, and 39 denotes a convex coupling member, which is provided to reinforce and integrate the convex 33 composed of a plurality of members.

  Furthermore, the transport cart 10 of the present invention includes the surrounding frames 13 and 14 described above. The surrounding frames 13 and 14 include a vertical column trunk 40 having an insertion portion 41 to be inserted into the left and right column mounting portions 21 and 22 on the lower side of the carriage body, and a front and rear parallel to the left and right side frames 16 and 17 from the column trunk 40. The horizontal crosspiece 42 extends and the surrounding portion 43 is provided so as to surround the front end of the horizontal crosspiece 42 (see FIG. 9). The uppermost horizontal beam portion 42a and the lowermost horizontal beam portion 42b constitute a part of the surrounding portion 43, and when the insertion portion 41 is inserted into the column attachment portions 21 and 22, The insertion position is uniquely determined at the place where the crosspiece 42b hits the upper end of the column attachment portions 21 and 22. However, positioning is not limited to such a configuration, and any known means can be used.

  When the insertion position is determined at the place where the lowest horizontal crosspiece 42b hits the upper ends of the column attachment portions 21 and 22, the column attachment portions 21 and 22 are provided on the left and right side frames 16 and 17, respectively. A space 44 corresponding to the height of the column attachment portions 21 and 22 is formed between the left and right side frames 16 and 17 and the lowest horizontal crosspiece portion 42b (see FIG. 12). The space 44 has a size that allows the center frame 18 to pass through when the front and rear floor plates 19 and 20 are raised during nesting. However, since FIG. 12 is illustrated in a state where the floor plates 19 and 20 are tilted and supported by the underframe 15, the floor plates 19 and 20 are arranged in the space 44.

Enclosures 13 and 14 are engaged with engaging portions 45 provided on either end side of the left and right side frames 16 and 17 when the insertion portion 41 is inserted into the column attachment portions 21 and 22. It has a protruding end portion 46 to be a mating partner at the lower end portion of either of the front and rear sides of the surrounding portion 42, and the insertion portion 41 is inserted into the column attaching portions 21 and 22, and the engaging portion 45 and the protruding end portion 46 are In the engaged state, a fastening member 47 that couples the surrounding frames 13 and 14 and the carriage body 11 is provided.

  In the illustrated example, the protruding end portion 46 is positioned on the right when the surrounding frames 13 and 14 are viewed from the outside. Therefore, when viewed from the front of the cart body 11, the protruding end portion 46 is disposed on the front side of the left surrounding frame 13. As for the right surrounding frame 14, the protruding end 46 is arranged on the rear side. Since the projecting end portion 46 prevents entry into and out of the space 44, it can be seen that there are directions in which nesting is possible and directions that are not possible in the transport cart 10 of the present invention.

  In the insertion of the insertion portion 41 into the column attachment portions 21 and 22 and the engagement between the engagement portion 45 and the projecting end portion 46, the surrounding frames 13 and 14 and the carriage main body 11 are in a detachable state. , 14 need to be fixed to the cart body 11 as a matter of course. Therefore, in the present invention, the surrounding frames 13 and 14 and the cart body 11 are coupled using the fastening member 47. Since the fastening member 47 is required to be easily operated and have a reliable action, bolts and nuts are suitable. For this purpose, a bolt hole 42c is formed in the lowermost horizontal crosspiece 42b, and a structure that can be coupled to the mounting bases 25 and 26 using a bolt and nut (see FIG. 12). Reference numeral 48 denotes a handle (handle) for pushing and pulling the transport cart 10.

  Furthermore, the auxiliary frame 50 can be used in the transport cart 10 of the present invention. The auxiliary frame 50 is illustrated in FIG. 10, has hooks 51 at both ends of the ladder-shaped main body, is attached to the front and rear of the left and right surrounding frames 13 and 14 of the transport carriage 10, and the front and rear of the base frame 15 are fenced. It is enclosed in a shape, or is attached horizontally at appropriate positions of the left and right surrounding frames 13, 14 so that it can be used as a shelf. In order to attach the auxiliary frame 50 to the surrounding frames 13 and 14 with hooks 51, vertical hooks 52 are provided on the front and rear side surfaces of the surrounding portions 43, and the left and right and the center of the frame surface of the surrounding portion 43 are provided. A number of hooks 53 are also provided. Reference numeral 54 denotes a suspender, which is a means for suspending the suspension frames 55 and 56 prepared in the surrounding frames 13 and 14 and the auxiliary frame itself when the auxiliary frame 50 is not used.

  The transport cart 10 of the present invention is configured as described above, and the cart body 11 has a wheel 12 for movement at the lower part thereof, and a carriage comprising a central frame 18 in which left and right side frames 16 and 17 are joined at a central portion. Since the front and rear floor plates 19 and 20 are arranged in front of and behind the central frame 18 with respect to the frame 15, both ends are supported by the left and right side frames 16 and 17, and one side is supported by the central frame 18. In this state, it can be used as a dolly for placing articles on the front and back floor plates 19 and 20. 6 and 7 show the state in which the floor plates 19 and 20 are removed, but the form of the transport cart 10 in a state where the floor plates 19 and 20 are attached and used as a dolly is as follows. It can be easily understood from FIG.

  In order to make the transport cart 10 of the present invention have left and right surrounding frames 13 and 14, as shown in FIG. 11, the insertion portions 41 of the left and right surrounding frames 13 and 14 are connected to the left and right columns of the cart body 11. It is inserted into the attachment parts 21 and 22 and attached. At that time, the lowermost horizontal crosspieces 42b of the left and right surrounding frames 13, 14 are placed and supported on the opening edges of the upper ends of the column attachment portions 21, 22, and the protruding portion 46 is engaged with the engaging portion 45, Further, the left and right surrounding frames 13 and 14 and the cart body 11 are integrally coupled by the fastening member 47. FIGS. 1 to 3 show the transport cart 10 in this state, and the transport cart 10 also includes an auxiliary frame 50 that can be attached if necessary.

  FIGS. 13 to 15 illustrate so-called nesting by the transport carriage 10 of the present invention. As shown in the drawings after FIG. 13, when nesting is performed, the floor plates 19 and 20 of the transport carriage 10 are raised on the left and right side frames 16 and 17. At this time, the front and rear floor plates 19 and 29 are raised to the left and right by the left and right hinge portions 23 and 24 as indicated by the chain lines in FIG.

  The underframe 15 in the present invention has an H-shaped planar shape, and the lower surface of the central frame 18 is positioned slightly higher than the upper surfaces of the left and right side frames 16, 17, so that it is nested. The left side of the nesting transport cart (indicated by reference numeral 10-2 in FIG. 13) below the center frame 18 of the transport cart (indicated by reference numeral 10-1 in FIG. 13). The frame 16 can be passed. At this time, the transporting cart (also 10-2) of the nesting passes the central frame 18 over the right side frame 17 of the transporting cart (also 10-1) of the nesting.

  In the transport cart 10 of the present invention, the floor plates 19 and 20 are raised on the left and right side frames 16 and 17, that is, the front floor plate 19 is on the left side frame 16 side and the rear portion. The floor plate 20 is on the right side frame 17 side. Accordingly, as shown in FIGS. 13 and 14, in the case of the embodiment, the nesting transport cart 10-2 always has the floor frames 19, 20 as opposed to the nesting transport cart 10-1. The side frame that is not hinge-coupled (the left half of the left side frame 16) passes below the central frame 18 of the transport cart 10-1. For this reason, the transport cart 10-2 nesting with respect to the transport cart 10-1 to be nested always nests from the front to the right.

  However, it is also possible to nest the transport cart 10-2 nesting with respect to the transport cart 10-1 to be nested, in which case the transport cart 10 is always moved from the rear to the left. -2 ... are nested (FIG. 15). According to the apparatus of the present invention thus configured, the constituent materials of the front and rear floor plates 19 and 20 are of the same shape and structure, and the hinge portions 23 and 24 for attaching them to the underframe 15 are also used. Since it is sufficient that the mounting positions are exactly the same and the mounting positions are made point-symmetric, the types of parts can be simplified, and no erroneous mounting of parts can occur, so that production with high mass productivity becomes possible.

It is front explanatory drawing which shows an example of the conveyance trolley | bogie which concerns on this invention. It is a right view of an apparatus same as the above. Similarly, it is a left side view. It is also a plan view. It is a perspective view of a frame similarly. It is a top view of a frame same as the above. It is a front view of a frame similarly. The floor frame used for the same carrier cart is shown, A is a front view, B is a left side view, and C is an end view. Similarly, it shows a side frame used for a transport cart, A is a front view, B is a left side view, and C is a bottom view. The auxiliary | assistant frame similarly used for a conveyance trolley | bogie is shown, A is a front view, B is a left view, C is a bottom view. It is a side view which shows the state which similarly attaches a surrounding frame to a trolley | bogie main body. It is a side view which shows the state which similarly attached the surrounding frame to the trolley | bogie main body. It is a top view explaining the nesting process by the conveyance trolley | bogie of this invention. It is a top view of the minimum state of the nesting by the transport cart of the present invention. It is a top view which shows the other nesting state by the conveyance trolley | bogie of this invention.

DESCRIPTION OF SYMBOLS 10 Carriage trolley 11 Bogie main body 12 Wheels 13, 14 Left and right surrounding frame 15 Base frame 16, 17 Left and right side frames 18 Center frame 19, 20 Front and rear floor plates 21, 22 Left and right column attachment portions 23, 24 Hinge portions 25, 26 Mounting base 27 Vertical member 28 Horizontal member 29 Floor member 30 Locking portion 31, 32 Locking portion 33 Protruding portion 34 Recessing portion 35 Locking claw 36 Elastic member 37 Handle for release 38 Handle opening portion 39 Protruding portion coupling member 40 Strut stem portion 41 Insertion section 42 Horizontal cross section 43 Enclosing section 44 Space 45 Engagement section 46 Protruding end section 47 Fastening member 48 Handle 50 Auxiliary frame 51 Hook 52, 53 Hook section 54 Suspension section 55, 56 Latch section

Claims (5)

It has a carriage main body on which an article is placed, and has a moving wheel at the bottom of the carriage main body.
The trolley body is composed of a base frame consisting of a central frame and parallel left and right side frames located at both ends thereof, and arranged at the front and rear of the central frame so that the left and right side frames support both ends and the central frame supports one side. And left and right floorboards, and left and right column attachment parts provided upward near the center of the left and right side frames,
One of the front and back floor boards is connected to one of the left and right side frames at the hinge, and the other of the front and rear floor boards is connected to the other of the left and right side frames at the hinge to support the front and rear floor boards on the base frame A carriage that is configured to take a state of being turned up and standing on the left and right side frames by rotating around the hinge portion. The main body of the carriage has an arrangement structure in which both ends of the central frame are arranged higher than the central part of the left and right side frames, and a plurality of transport carts are nested with the floorboard raised in advance. Sometimes, the left or right side frame of the nesting passes under the central frame of the nesting side, and the left and right side frames of the nesting side and the left and right side frames of the nesting side are nested. 2. The transport cart according to claim 1, wherein the central frame of the nesting side and the central frame of the nesting side are arranged so as to approach each other. The left and right column attachment parts have both ends of the center frame attached to the inner side surfaces thereof, and the upper part is open and the lower end of the column is inserted therein to constitute means for standing the column. Carriage truck. The column is a column that constitutes a part of the surrounding frame that surrounds the left and right of the article placed on the main body of the cart, and a vertical column trunk that has an insertion part to be inserted into the column mounting unit on the left and right of the cart main body, and a column trunk Has a horizontal beam part extending in front and back in parallel with the left and right side frames, and an enclosing part provided so as to surround the tip of the horizontal beam part, and when the insertion part is inserted into the column mounting part, the lowermost horizontal beam part 4. The transport cart according to claim 3, wherein the positioning of the insertion is made by hitting the upper end of the support mounting portion. The enclosing frame surrounds the projecting end part that engages with the engaging part provided on either the front or rear end side of the left and right side frames when the insertion part is inserted into the column mounting part. There is a fastening member that connects the surrounding frame and the cart body in either of the lower end portions and in a state in which the insertion portion is inserted into the column mounting portion and in a state in which the engaging portion and the protruding end portion are engaged. The transport cart according to claim 4.

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