JP3164261U - Rack trolley - Google Patents

Abstract

[PROBLEMS] To provide a rack cart that is improved in usability because it can be moved in a state in which the stored item is stored regardless of the weight of the stored item. A rack cart 100 includes a mounting table 101 on which an object to be stored is mounted. The mounting table 101 is supported by a caster 105 via a lower transverse frame 104 that is slidably mounted in the vertical direction with respect to the upper transverse frame 102, and the upper transverse frame 102, the lower transverse frame 104, and the like. It is displaced in the vertical direction by a spring body provided between the two. The mounting table 101 further includes a front support column 108 and a rear support column 109 that come in contact with the floor when lowered. A lock mechanism 107 that restricts the lowering of the mounting table 101 is provided. [Selection] Figure 1

Description

  The present invention relates to a rack cart that can load and store a storage object in a movable state in a warehouse or factory.

  Conventionally, in warehouses and factories, racks (storage shelves) are used to temporarily store parts and products. In general, a rack used in a warehouse, a factory, or the like stores a storage box (for example, a cardboard box or a box) containing stored items directly or stores the storage box through a pallet. In this case, the storage box storing the articles to be stored and the pallet on which the storage box is placed are transported to the rack and stored by a person, a forklift, or the like.

  In this way, when storing an object to be stored in a rack, the object to be stored must be carried to the rack and stored as described above. Since the cargo handling operation for transporting and storing the storage object to the rack is an extremely complicated operation, for example, in Patent Document 1 below, a caster is provided on the bottom of the mounting table on which the storage object is mounted via a spring material. A storage shelf with wheels is proposed. This wheeled storage shelf cannot be moved by casters because the mounting table descends due to the weight of the object to be stored placed on the mounting table, and the column provided on the mounting table contacts the floor surface. It becomes a state.

Japanese Patent Laid-Open No. 08-113239

  However, in such a wheeled storage shelf, when a storage object of a predetermined weight or more (for example, 600 kg or more) is placed on the mounting table, the mounting table descends and is provided on the mounting table. Since the support is in contact with the floor, the storage shelf cannot be moved in a state in which an object to be stored weighing a predetermined amount or more is stored. For this reason, in the case where the article to be stored is placed and moved on the mounting table, there is a problem that the weight of the article to be stored that can be placed on the mounting table is limited and the usability is poor.

  The present invention has been made to address the above problems, and its purpose is to provide a rack cart that is improved in usability by being able to move in a state in which stored items are stored regardless of the weight of the stored items to be stored. It is to provide.

  In order to achieve the above object, a feature of the present invention according to claim 1 is that a mounting table for placing a storage object and a spring body elastically deformed by the weight of the storage object placed on the mounting table. And at least three casters for supporting the mounting table so as to be movable relative to the floor, and grounding the mounting table by lowering the mounting table due to elastic deformation of the spring body. There is provided a supporting column and a lock mechanism for preventing the mounting table from descending due to elastic deformation of the spring body.

  According to the characteristic of the present invention according to claim 1 configured as described above, the rack carriage has the mounting table placed on the mounting table on which the stored object is mounted via the spring body that is elastically deformed by the weight of the stored object. A caster for moving is provided, and a lock mechanism for preventing the mounting table from descending due to elastic deformation of the spring body is provided. In this case, for example, the lock mechanism can be configured by a link mechanism that can arrange and retract a member for directly supporting the mounting table on the caster between the mounting table and the caster. For this reason, when the user who uses the rack cart places the article to be stored on the placing table, the user can operate the lock mechanism so that the placing table does not descend due to the placing of the article to be stored. Thereby, the rack cart can be moved in a state in which the stored item is placed, regardless of the weight of the stored item, when storing the stored item. As a result, the user of the rack carriage can place the article to be stored regardless of the weight of the article to be stored when the article to be stored is placed on the placing table and moved.

  Another feature of the present invention according to claim 2 is that, in the rack carriage, at least three sides on the placement surface on which the article to be stored is placed are opened.

  According to another feature of the present invention according to claim 2 configured as described above, at least three sides of the rack carriage on the upper surface of the placing table on which the article to be stored is placed are opened. Thereby, since the user of the rack carriage can place the article to be stored from at least three directions with respect to the placing table, it becomes easy to perform the cargo handling work, and the workability is improved.

  Further, in another feature of the present invention according to claim 3, in the rack carriage, the support column is formed to extend upward with a length in which an upper end portion is located above a mounting surface of the mounting table, The upper end portion and the lower end portion of the support column are formed so as to be fitted to each other with respect to the lower end portion and the upper end portion of the support column of another rack truck.

  According to another feature of the present invention according to claim 3 configured as described above, the support column constituting the rack carriage extends upward with a length at which the upper end portion is located above the mounting surface of the mounting table. The upper end portion and the lower end portion of the support column are formed so as to be fitted to each other with respect to the lower end portion and the upper end portion of the support column of another rack truck. As a result, the user can stack and use a plurality of rack carts with the article to be stored on the mounting table, and can effectively use the storage space.

  According to another aspect of the present invention according to claim 4, in the rack carriage, at least one of the three columns includes a lower column whose upper end is positioned below the mounting surface of the mounting table, and a lower column. The upper support column is configured to be detachably connected to the upper end portion of the side support column.

  According to the other characteristic of this invention which concerns on Claim 4 comprised in this way, a support | pillar is with respect to the lower support | pillar whose upper end part is located below the mounting surface in a mounting base, and the upper end part of the same lower support | pillar. It is comprised with the upper support | pillar connected detachably. Thus, the user can separate the upper support column from the lower support column so that the periphery on the mounting table is open, and the user can easily place and remove the storage object on the mounting table. be able to. In addition, in a state in which an object to be stored is placed on the mounting table, the upper column can be connected to the lower column to prevent the stored item from being displaced or dropped from the mounting table, and the rack carriage can be used. Can be stacked.

  According to a fifth aspect of the present invention, in the rack carriage, the mounting table includes a holding portion for holding the upper column separated from the lower column.

  According to the other characteristic of the present invention according to claim 5 configured as described above, the rack carriage includes a holding unit for holding the upper column separated from the lower column on the mounting table. As a result, the user can hold the upper strut separated from the lower strut on the mounting table by the holding portion, and can prevent the separated upper strut from being lost and separately secure storage space for the separated upper strut. Nor. Moreover, the upper support | pillar hold | maintained at the holding | maintenance part of the mounting part can be taken out from a holding | maintenance part immediately when an upper support | pillar is needed, and workability | operativity also improves.

  According to another aspect of the present invention according to claim 6, in the rack cart, the support column includes an erection rod body provided between at least two of the three columns.

  According to the other feature of the present invention according to claim 6 configured as described above, the support column constituting the rack carriage is provided in a state in which the installation rod is installed between at least two of the three support columns. . As a result, the user can use the erection rod erected between the two columns as an operator for manually pushing the rack cart, and the usability can be improved. In addition, the erection rod installed between the two columns can prevent the object to be stored placed on the mounting table from being displaced or dropped, and the strength and rigidity of the column provided with the erection rod. Can be increased.

It is the front perspective view which showed roughly the external appearance structure of the rack trolley | bogie which concerns on this invention. FIG. 2 is a rear perspective view schematically showing an external configuration of a rack cart according to the present invention shown in FIG. 1. It is the partially broken side view which showed roughly the external appearance structure of the rack trolley | bogie shown in FIG. It is the front view which showed roughly the external appearance structure of the rack trolley | bogie shown in FIG. It is the top view which showed roughly the external appearance structure of the rack trolley | bogie shown in FIG. FIG. 5 is a front view schematically showing an external configuration of the rack cart shown in FIG. 4 in a state where the mounting table is locked by a locking mechanism. FIG. 4 is a partially cutaway side view schematically showing an external configuration of the rack cart shown in FIG. 3 in a state where the mounting table is lowered. It is the partially broken side view which showed roughly the external appearance structure of the state which accumulated the other rack trolley on the rack trolley shown in FIG.

  Hereinafter, an embodiment of a rack truck according to the present invention will be described with reference to the drawings. FIG. 1 is a front perspective view schematically showing an external configuration of a rack cart 100 according to the present invention. FIG. 2 is a rear perspective view schematically showing an external configuration of the rack cart 100. FIG. 3 is a side view schematically showing the external configuration of the rack cart 100. FIG. 4 is a front view schematically showing the external configuration of the rack cart 100. FIG. 5 is a plan view schematically showing an external configuration of the rack cart 100.

  In addition, each figure referred in this specification is expressed typically, such as exaggerating some components, in order to facilitate understanding of the present invention. For this reason, the dimension, ratio, etc. between each component may differ. The rack cart 100 according to the present embodiment is a rack and cart used for transporting and / or temporarily storing articles to be stored such as parts and products in a warehouse or factory.

(Configuration of rack cart 100)
The rack cart 100 includes a mounting table 101. The mounting table 101 is a loading platform for mounting the article to be stored WK stored in the rack cart 100, and is formed by assembling a square steel pipe (steel pipe) material into a rectangular frame shape. In this embodiment, the pallet of 1100 mm × 1100 mm is formed in a size that can be placed. On the inner side of the rectangular frame constituting the mounting table 101, an upper transverse frame 102 is provided on the front side and the rear side of the rack carriage 100 so as to extend along the lateral width direction of the rack carriage 100. As shown in FIG. 3, the upper transverse frame 102 has an inner portion of a grooved steel (a so-called channel formed in a U-shaped cross section) opened downward in the figure, and an outer upper surface on the outer side of the mounting table 101. It arrange | positions so that it may become flush with the square frame to comprise. 3, 4, and 6 to 8, the article to be stored WK is indicated by a two-dot chain line (imaginary line).

  The lower frames 104 are fitted into the inner portions of the two upper transverse frames 102 via spring bodies 103, respectively. The spring body 103 is a spring body formed in a coil shape, and two spring bodies 103 are arranged along the longitudinal direction of the upper transverse frame 102 in the inner space of the upper transverse frame 102. In this embodiment, the spring body 103 is constituted by a coil spring that is completely compressed and elastically deformed by applying a load of about 25 kg to one spring body 103. Therefore, in the mounting table 101, the storage object WK having a total weight of about 100 kg or more is mounted, so that the spring body 103 is completely compressed and elastically deformed and can be displaced along the vertical direction in the figure. Displaces to the lower limit position.

  The lower transverse frame 104 is made of channel steel similar to the upper transverse frame 102. The lower transverse frame 104 is formed so that the outer width is shorter than the inner width of the upper transverse frame 102, and the inner portion of the upper transverse frame 102 is open in the vertical direction shown in the drawing so that the inner portion opens upward in the drawing. It is fitted in a slidable state along. That is, the lower transverse frame 104 supports the upper transverse frame 102 (that is, the mounting table 101) via the spring body 103 in a state in which the upper transverse frame 102 can be displaced in the vertical direction in the figure. The lower transverse frame 104 is attached to the upper transverse frame 102 by bolts 104a so as to be slidable in the illustrated vertical direction.

  Two casters 105 are arranged along the longitudinal direction of the upper frame 102 on the bottom surfaces of the two lower transverse frames 104 in the figure. The caster 105 is a wheel that supports the mounting table 101 so as to be movable on the floor surface GL. That is, the four casters 105 support the mounting table 101 via the spring body 103. A longitudinal frame 106 is provided at the center of the lower transverse frame 104 along the front-rear direction of the rack cart 100. The longitudinal frame 106 is configured by connecting both ends of two steel square pipes (steel pipes) extending in the front-rear direction of the rack carriage 100 with steel plate receiving plates 106a.

  Lock mechanisms 107 are provided on the bottom surface of the mounting table 101 facing the upper side of the receiving plate 106a of the longitudinal frame 106, respectively. The lock mechanism 107 is a link mechanism component for restricting the lowering of the mounting table 101, and the circular pressing plate 107b is displaced in the direction toward and away from the receiving plate 106a (up and down direction in the drawing) by the operation of the pedal 107a. It is configured as follows.

  Front struts 108 are provided in two corners on the front side of the rack carriage 100 out of the four corners on the outer side of the mounting table 101 so as to extend laterally in parallel with each other along the vertical direction in the figure. The front support column 108 is a cylindrical member made of a steel round pipe (steel pipe) material for supporting the mounting table 101 with respect to the floor GL and stacking the rack cart 100 when the mounting table 101 is lowered. The lower front column 108a and the upper front column 108b are connected freely. In FIGS. 1 to 3 and FIG. 7, the upper front column 108b is indicated by a two-dot chain line (imaginary line). FIG. 4 shows a state in which the upper front support column 108b is held by a holding unit 111 described later. Further, in FIG. 5, the illustration of the upper front column 108b is omitted.

  Among these, the lower front support column 108a is a cylindrical member for supporting the mounting table 101 with respect to the floor surface GL when the mounting table 101 descends and mounting the rack cart 100 on the other rack cart 100. It is. More specifically, the lower front strut 108a has an upper end of a steel round pipe material that opens with an inner diameter into which the lower end of the upper front strut 108b can be inserted, and the lower end is an upper side of another rack carriage 100. The upper end portion of the front support column 108b is formed in a cup shape that can be inserted and expanded in diameter. Further, the lower front column 108a is formed in such a length that the lower end part floats from the floor surface GL in a state where the upper end part is positioned flush with the upper surface of the mounting table 101. In the present embodiment, the lower end portion of the lower front support column 108a is provided in a state of floating about 20 mm from the floor surface GL.

  The upper front column 108b is a cylindrical member mainly for stacking other rack carts 100 on the rack cart 100, and has an outer diameter smaller than the inner diameter of the upper end portion of the lower front column 108a. The upper front column 108b is formed to have a length higher than the height of the article to be stored WK placed on the mounting table 101 when the upper front column 108b is inserted and connected to the lower front column 108a.

  On the other hand, of the four corners on the outer side of the mounting table 101, the rear column 109 is provided in two corners on the rear side of the rack cart 100 so as to extend laterally in parallel with each other along the vertical direction in the figure. Yes. The rear column 109 is a cylindrical member made of a steel round pipe (steel pipe) material for supporting the table 101 with respect to the floor surface GL and stacking the rack cart 100 when the table 101 is lowered together with the front column 108. It is. The support column 109 is formed to have the same length as the front support column 108 that connects the lower front support column 108a and the upper front support column 108b. The part is formed to expand in a cup shape.

  An erection rod body 110 is provided on the upper part of the two rear columns 109 in a state of being installed between the rear columns 109. The erection rod body 110 is a rod member for moving the mounting table 101 by hand, and is composed of a steel round pipe (steel pipe) material. The erection rod 110 is provided at the lowest position of the rack cart 100 that is stacked on the upper side when the rack cart 100 is stacked, specifically, at a height position where the lower end of the caster 105 is positioned.

  On the lower surfaces of the four corners of the mounting table 101, round steel material extends downward from the respective lower surfaces in the figure, and then bends at right angles toward the front column 108 and the rear column 109 to be connected to the front column 108 and the rear column 109, respectively. A holding unit 111 configured as described above is provided. The holding portions 111 are paired with two holding portions 111 provided in the front-rear direction of the rack cart 100, and the upper front strut 108b separated from the lower front strut 108a is passed through the same pair of holding portions 111. This is the portion that holds the upper front strut 108b.

(Operation of rack cart 100)
Next, the operation of the rack cart 100 configured as described above will be described. First, the user of the rack cart 100 moves the rack cart 100 to a place where the article to be stored WK is placed. Specifically, the user is installed between the rear struts 109 in a state where the upper front struts 108b constituting the front struts 108 are removed from the lower front struts 108a and stored in the holding unit 111 (see FIG. 4). The rack 100 is moved by a manual push operation while holding the construction rod body 110. In this case, since the luggage such as the storage object WK is not placed on the placing table 101, the placing table 101 does not descend, and the lower ends of the front column 108 and the rear column 109 float from the floor GL. It is in the state. Thereby, the user can move the rack cart 100 easily and smoothly. Needless to say, the rack cart 100 can move even when the upper front column 108b is connected to the lower front column 108a.

  Next, the user places the article to be stored WK on the placing table 101. Specifically, as shown in FIG. 6, the user operates the pedal 107a of the lock mechanism 107 to lower the pressing plate 107b and press it against the receiving plate 106a. Thereby, the mounting table 101 is directly supported by the caster 105 via the vertical frame 106. That is, the lowering of the mounting table 101 is prevented. Next, the user lifts the storage box (for example, a cardboard box or a box) containing the articles to be stored WK using a forklift truck (not shown) directly or by lifting the storage box via a pallet and placing it on the mounting table 101. Placed on. In this case, since the mounting table 101 is in a locked state that cannot be lowered by the lock mechanism 107, the mounting table 101 is not lowered by placing the article to be stored WK. That is, the lower ends of the front column 108 and the rear column 109 are not installed on the floor surface GL by placing the article WK to be stored on the table 101.

  Accordingly, the user can freely move the rack carriage 100 even when the article to be stored WK is placed on the placing table 101. Therefore, the user can move the rack cart 100 to the storage location by gripping the construction rod body 110 constructed between the rear columns 109 and pushing it in the same manner as described above. In this case, the user can move the rack carriage 100 by connecting the upper front column 108b held by the holding unit 111 to the lower front column 108a. According to this, it is possible to prevent misalignment, dropping, and damage of the article to be stored WK while the rack carriage 100 is moving.

  Note that the rack cart 100 according to the present embodiment is a lower limit position in a displaceable range of the mounting table 101 if the mounting table 101 has a weight of up to about 100 kg in a state where the lowering of the mounting table 101 by the lock mechanism 107 is released. It will not go down. Therefore, the user can place and move the article to be stored WK without locking the lowering of the placing table 101 if the article to be stored has a weight of up to about 100 kg. Further, the rack cart 100 according to this embodiment can place and move up to 500 kg of the article WK to be stored on the mounting table 101 in a state where the lowering of the mounting table 101 is locked by the lock mechanism 107. That is, the load resistance of the lock mechanism 107 in this embodiment is 500 kg. Therefore, by using the lock mechanism 107 having a load resistance of 500 kg or more, the article WK of 500 kg or more can be mounted on the mounting table 101 and moved. In addition, the rack cart 100 according to the present embodiment can store and store up to 1000 kg of the articles to be stored WK on the mounting table 101 in a state where the lock of the lowering of the mounting table 101 is released by the lock mechanism 107.

  The user who has moved the rack cart 100 to the storage location of the article to be stored WK operates the pedal 107a of the lock mechanism 107 to raise the pressing plate 107b to release the pressing of the receiving plate 106a. As a result, the mounting table 101 is released from the support by the caster 105 via the longitudinal frame 106 and is supported by the caster 105 via the spring body 103 and the longitudinal frame 106 (see FIG. 3). Therefore, when the total weight of the storage object WK is about 100 kg or more, the mounting table 101 is lowered to the lower limit position in the displaceable range while resisting the elastic force of the spring body 103 as shown in FIG. To do. As a result, the lower ends of the front column 108 and the rear column 109 are simultaneously grounded to the floor surface GL, and the mounting table 101 is again directly supported by the caster 105 via the vertical frame 106. That is, the rack cart 100 is in an inoperable state.

  The rack cart 100 can store the storage item WK in a state where the lower ends of the front column 108 and the rear column 109 are in contact with the floor surface GL and cannot move. Depending on the weight of the WK, the article to be stored WK can be stored in a state where the lowering of the mounting table 101 by the lock mechanism 107 is locked. Further, when the user places the rack cart 100 in the storage position and stores the article to be stored WK, the article to be stored WK is held in a state where the upper column 108a that constitutes the upper part of the front column 108 is held by the holding unit 111. Can be stored. On the other hand, the user can also store the article WK to be stored in a state where the upper front column 108b is removed from the holding unit 111 and connected to the lower front column 108a. Thereby, the rack cart 100 can prevent the misalignment, dropping, and damage of the article to be stored WK mounted on the mounting table 101.

  Furthermore, as shown in FIG. 8, the user can also stack other rack carts 100 above the rack cart 100 to store other articles to be stored WK. Specifically, the user positions the rack cart 100 arranged in the lower stage at the storage position, and then inserts and connects the two upper front struts 108b held by the holding portion 111 to the lower front struts 108a. To do. Thereby, the front column 108 is formed at the same height as the rear column 109. Next, the user places the rack carriage 100 arranged in the upper stage in the vicinity of the rack carriage 100 arranged in the lower stage, and uses the forklift truck (not shown) or the like to place the rack carriage 100 arranged in the upper stage. Are stacked on the rack cart 100 arranged in the lower stage. In this case, the user can lift the rack truck 100 through the longitudinal frame 106 by inserting the fork of the forklift truck below the longitudinal frame 106.

  Further, in this case, the user can use the upper ends of the front struts 108 and the rear struts 109 of the rack cart 100 arranged in the lower stage as the cup-shaped lower ends of the front struts 108 and the rear struts 109 arranged in the upper stage. Place on the department. As a result, the article to be stored WK can be stored in a state where the two rack carts 100 are stacked one above the other. In this case, in the case where the article to be stored WK is stored in the rack cart 100 arranged in the lower stage, the construction rod in which the upper end portion of the article to be stored WK placed on the placing table 101 is installed on the rear column 109. Confirm that it is located below the body 110.

  Accordingly, the rack cart 100 in which the lower end portion (the caster 105) of the rack cart 100 arranged in the upper stage when the rack cart 100 arranged in the upper stage is stacked on the rack cart 100 arranged in the lower stage is arranged in the lower stage. Interference with the article to be stored WK stored in the container can be recognized in advance, damage to the article to be stored WK stored in the rack carriage 100 arranged in the lower stage, loading error of the rack truck 100 arranged in the upper stage, etc. It is possible to prevent accidents in cargo handling work.

  On the other hand, when taking out the article WK to be stored from the rack truck 100, the user can take out the article WK placed on the stage 101 using a forklift truck or the like. In this case, the user can easily perform the cargo handling work by separating the upper front column 108b from the lower front column 108a. When the article to be stored WK is removed from the mounting table 101, the mounting table 101 is raised by the elastic force of the spring body 103. As a result, the front column 108 and the rear column 109 together with the mounting table 101 simultaneously rise and separate from the floor surface GL, so that the rack carriage 100 becomes movable again.

  As can be understood from the above description of the operation, according to the embodiment, the rack cart 100 is placed on the mounting table 101 on which the article to be stored WK is placed via the spring body 103 that is elastically deformed by the weight of the article to be stored WK. A caster 105 for moving the mounting table 101 is provided, and a lock mechanism 111 for preventing the mounting table 101 from being lowered due to elastic deformation of the spring body 103 is provided. Therefore, when the user who uses the rack cart 100 places the article to be stored WK on the placing table 101, the lock mechanism 111 is operated so that the placing table 101 is not lowered due to the placing of the article to be stored WK. State. Thereby, the rack cart 100 can be moved in a state where the article to be stored WK is placed regardless of the weight of the article to be stored WK when the article to be stored WK is stored. As a result, the user of the rack cart 100 can place the article to be stored WK regardless of the weight of the article to be stored when the article to be stored is placed on the placing table 101 and moved. To do.

  Furthermore, in carrying out the present invention, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the object of the present invention.

  For example, in the above embodiment, the spring body 103 is configured by a coil spring. However, the spring body 103 is not limited to the above embodiment as long as it is an elastic body that is elastically deformed by the weight of the article to be stored WK placed on the placing table 101. For example, the spring body 103 can be configured by a leaf spring. Also, the arrangement position and number of the spring bodies 103 are not limited to the above-described embodiment as long as the front struts 108 and the rear struts 109 can be displaced in the direction of grounding and separating from the floor surface GL. . Further, the elastic coefficient of the spring body 103 may be appropriately determined according to the specifications of the rack carriage 100, for example, the weight of the article WK to be stored on the mounting table 101.

  Moreover, in the said embodiment, the caster 105 was comprised with the wheel. However, the caster 105 is not limited to the above embodiment as long as it can move the mounting table 101 with respect to the floor surface GL. For example, the caster 105 can be configured by a sphere or an endless track.

  Moreover, in the said embodiment, it comprised with the lower front support | pillar 108a and the upper front support | pillar 108b which can connect the front support | pillar 108 so that attachment or detachment is mutually possible. However, the front strut 108 can also be made of a single round steel material, like the rear strut 109. Further, at least three front columns 108 and rear columns 109 are arranged with respect to the mounting table 101, and support the mounting table 101 by being grounded to the floor surface GL when the mounting table 101 is lowered by elastic deformation of the spring body 103. If it is good. That is, the front column 108 and the rear column 109 correspond to columns according to the present invention. Therefore, the front strut 108 and the rear strut 109 may be composed of 3 in total, or may be composed of 5 or more in total. Further, when the front strut 108 and the rear strut 109 are configured to be separable like the lower front strut 108a and the upper front strut 108b, the number of divisions and the number of struts configured to be separable also depend on the specifications of the rack truck 100. May be determined appropriately. Further, the lengths of the front column 108 and the rear column 109 do not necessarily need to be formed so as to extend upward from the upper surface, which is the mounting surface of the mounting table 101, and the upper end portion is the same as the lower front column 108a. May be configured to have a length that is flush with the top surface of the mounting table 101.

  Moreover, in the said embodiment, it was set as the state which open | released three sides on the mounting base 101 by comprising the front support | pillar 108 so that the upper front support | pillar 108b is separable with respect to the lower front support | pillar 108a. This is for facilitating the work of loading and unloading the article WK to be stored on the mounting table 101. Therefore, if it is possible to ensure the work of loading and unloading the article WK on the mounting table 101, the side and / or the front-rear direction on the mounting table 101 has a fence-like or plate-like wall (for example, a bowl shape). It may be configured to be closed with.

  Further, in the above embodiment, the rack cart 100 is configured such that the front columns 108 and the rear columns 109 of the other rack carts 100 are arranged with respect to the front column 108 and the rear column 109 so that the plurality of rack vehicles 100 can be stacked on each other. It was configured to be matable. However, when there is no need to stack a plurality of rack carts 100 on each other, the rack cart 100 does not necessarily fit the front column 108 and the rear column 109 of the other rack cart 100 to the front column 108 and the rear column 109. There is no need to form them as possible. Further, the configuration in which a plurality of rack carts 100 are stacked is not limited to the above-described embodiment, and other configurations are naturally possible.

  In the above embodiment, the holding portion 111 is provided at the bottom of the mounting table 101 in order to hold the upper front strut 108 b separated from the lower front strut 108 a in the front strut 108. However, the holding unit 111 is provided with a space for storing the upper front strut 108b when it is not necessary to hold the upper front strut 108b, for example, when the front strut 108 is formed of an inseparable one-piece. This is unnecessary and can be omitted.

  Further, in the above embodiment, the erection rod body 111 is provided between the two rear columns 109. However, the erection bar 111 is provided to improve the convenience of the manual operation of the rack cart 100 and to ensure the stability and safety of the storage object WK placed on the placement table 101, and is not necessarily required. It ’s not something. That is, the construction rod body 111 may be provided as necessary in the number, arrangement, and shape according to the specifications of the rack cart 100. For example, in addition to the two rear struts 109, one or two or more construction bar bodies 111 may be provided between the rear strut 109 and the front strut 108 or between the two front struts 108. it can.

WK: Storage object, GL: Floor surface 100: Rack cart, 101: Mounting table, 102: Upper transverse frame, 103 ... Spring body, 104 ... Lower transverse frame, 104a ... Bolt, 105 ... Caster, 106 ... Longitudinal frame 106a ... receiving plate, 107 ... locking mechanism, 107a ... pedal, 107b ... pressing plate, 108 ... front strut, 108a ... lower front strut, 108b ... upper front strut, 109 ... rear strut, 110 ... installation rod, 111 ... holding part.

Claims (6)

A mounting table for mounting the storage object;
A caster that supports the mounting table movably with respect to the floor surface via a spring body that is elastically deformed by the weight of the storage object mounted on the mounting table;
At least three columns are arranged with respect to the mounting table, and support columns that support the mounting table by grounding to the floor surface by lowering the mounting table by elastic deformation of the spring body
A rack cart comprising: a lock mechanism that prevents the mounting table from descending due to elastic deformation of the spring body. The rack cart according to claim 1,
The rack is characterized in that at least three sides of the mounting table on the mounting surface on which the storage object is mounted are opened. In the rack trolley | bogie of Claim 1 or Claim 2,
The column is
The upper end is formed to extend upward with a length located above the mounting surface in the mounting table, and the upper end and the lower end of the column are the lower ends of the columns in the other rack cart. And a rack truck characterized by being formed so as to be fitted to each other with respect to the upper end portion. In the rack trolley | bogie described in Claim 3,
At least one of the three struts is
A lower support column in which the upper end is located below the mounting surface in the mounting table;
A rack cart comprising an upper column that is detachably connected to an upper end of the lower column. In the rack trolley | bogie of Claim 4,
The rack is provided with a holding unit for holding the upper column separated from the lower column. In the rack trolley | bogie as described in any one of Claim 3 thru | or 5,
The column is
A rack truck comprising an erection bar that is erected between at least two of the three columns.

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