Abstract
A pallet understructure, in particular for transport and storage containers for liquids, which are equipped with an inner container made of plastic, with a closable filling neck and a draining neck for connecting a tapping armature, the understructure having an outer jacket made of a metal grid or sheet metal, and a bottom for supporting the inner container, corner feet and central feet arranged between the corner feet as well as a bottom cross member, at least the outer jacket and the bottom cross member being attached to at least two central feet, the respective central foot, the outer jacket and the bottom cross member being coupled in a form-fitting fashion with the aid of a screw, wherein the screw is engaged with the bottom cross member in a form-fitting fashion.
Claims
1. A pallet understructure (51) for transport and storage containers for liquids, which are equipped with an inner container made of plastic, with a closable filling neck and a draining neck for connecting a tapping armature, wherein the understructure has an outer jacket (53) made of a metal grid or sheet metal, and a bottom (56) for supporting the inner container, corner feet and at least two central feet (52) arranged between the corner feet as well as a bottom cross member (59), wherein at least the outer jacket and the bottom cross member are attached to at least two central feet, wherein the respective central feet (52), the outer jacket and the bottom cross member are coupled in a form-fitting fashion with the aid of a screw (60), characterized in that a clearance opening (67) for engaging with the screw (60) is embodied in the bottom cross member (59), an inside diameter (84) of the clearance opening (67) is smaller than an outside diameter (71) of the screw (60) in such a manner that a tensile force acting between the bottom cross member (59) and the outer jacket (53) can be transmitted via the screw (60), the screw (60) reaches through clearance openings (65, 66) embodied in each instance in the outer jacket (53) and in the bottom (56), such that the screw (60) is engaged with the bottom cross member (59) in a form-fitting fashion.
2. The understructure according to claim 1, characterized in that the central foot (52), the outer jacket (53), the bottom (56) and the bottom cross member (59) are coupled in a form-fitting fashion with the aid of the screw (60).
3. The understructure according to claim 2, characterized in that a screw thread is embodied in the bottom (56), the screw (60) engaging with said screw thread.
4. The understructure according to claim 1, characterized in that the bottom cross member (59) is realized from metal, and in that the bottom (56) is realized from metal or from plastic material.
5. The understructure according to claim 1, characterized in that the clearance opening (67) is embodied with a hollow (83).
6. The understructure according to claim 1, characterized in that a screw thread (73) is embodied in the bottom cross member (59), the screw (60) engaging said screw thread.
7. The understructure according to claim 6, characterized in that the screw thread (73) is embodied with the aid of the screw (60).
8. The understructure according claim 1, characterized in that the screw (60) is engaged with the central foot (52) in a form-fitting fashion, in such a manner that a tensile force realized between the central foot and the outer jacket (53) can be transmitted via the screw.
9. The understructure according to claim 1, characterized in that the bottom cross member (59) is coupled to the central foot (52) in a form-fitting fashion with the aid of a further screw (60).
10. The understructure according to claim 1, characterized in that the central feet (52) are realized from a plastic material.
11. The understructure according claim 1, characterized in that a screw thread is embodied in the central foot (52), with which the screw (60) engages.
12. The understructure according to claim 1, characterized in that two central feet (52) facing each other are coupled to each other via the bottom cross member (59).
13. The understructure according to claim 1 characterized in that there is a bracket, which reaches around the bottom cross member (59), around the bottom (56) and around a peripheral edge of the outer jacket (53), wherein the screw (60) penetrates legs of the bracket.
14. A transport and storage container for liquids, which is equipped with an inner container made of plastic, with a closable filling neck and a draining neck for connecting a tapping armature, wherein the inner container is arranged on a bottom of a pallet understructure (51) according to claim 1.
Description
BRIEF DESCRIPTION OF THE DRAWING FIGURES
(1) A preferred embodiment will be explained in more detail below using the drawings. In the figures:
(2) FIG. 1 shows a pallet-like understructure according to the state of the art in a perspective view;
(3) FIG. 2 shows a detailed view of a central foot of the understructure from FIG. 1;
(4) FIG. 3 shows a side view of the understructure according to the state of the art from FIG. 1;
(5) FIG. 4 shows a sectional view along a line IV-IV from FIG. 3;
(6) FIG. 5 shows a sectional view in the region of a central foot of an understructure;
(7) FIG. 6 shows a detailed view of the sectional view from FIG. 5;
(8) FIG. 7 shows a perspective detailed view of the central foot of the understructure from FIG. 5;
(9) FIG. 8 shows a perspective view of a bottom cross member of the understructure from FIG. 5.
DETAILED DESCRIPTION OF THE INVENTION
(10) FIGS. 1 to 4 show a transport and storage container 10 in different views, wherein in particular an inner container of the transport and storage container 10 is not depicted in more detail here, such that only an understructure 11 of the transport and storage container 10 is illustrated. The understructure 11 is substantially realized from an outer jacket 12, a bottom 13 as well as corner feet 14 and central feet 15 arranged between the corner feet 14 and from a bottom cross member 16 situated between the central feet 15. In detail, the corner feet 14 and the central feet 15 are arranged on skids 17 or 18. The bottom 13, the corner feet 14, the central feet 15, the bottom cross member 16 as well as the skids 17, 18 together realize a pallet 19. The outer jacket 12 arranged on the pallet 19 is realized from interlaced, horizontal and vertical grid bars 20, 21 made of metal, wherein in particular a lower grid bar 20 resting on the pallet 19, of the outer jacket 12, is embodied as a pipe 22, which is coupled to the corner feet 14 via attachment points 23 and to the central feet 15 via attachment points 24.
(11) A combined view of FIGS. 2 and 4 shows an attachment point 24 with a central foot 15, wherein the bottom 13 is not illustrated in the view illustrated in FIG. 2. The bottom cross member 16 is formed from a profiled body 25 made of metal, and is arranged on an upper side 26 of the central foot 15. In addition, the bottom 13 has been placed onto the bottom cross member 16 or on the profiled body 25 above the bottom cross member 16 in an edge region 27 of the central foot 15. In addition, a clearance opening 39 is likewise disposed in the bottom 13, wherein a screw 40 has been screwed into the central foot 15 through the clearance opening 39 and through a clearance opening 36 of the profiled body 25. In this context, the inside diameters 42 and 43 of the clearance opening 36 or 39 are dimensioned to be so large that a sufficiently large play relative to a shank 45 of the screw 40 is realized, which prevents a touch with the screw 40 in the region of the inside diameters 42 and 43. The same is true for the clearance opening 36 not illustrated in a detailed fashion here, in the profiled body 25.
(12) An impact force now effected as a consequence of a crash of the transport and storage container 10 onto an outer rim 46 of the central foot 15 again leads to a deformation or shift of the inner container not illustrated here within the outer jacket 12, such that the outer jacket 12 for its part exerts a tensile force in the direction of a longitudinal axis 47 of the screw 40 onto the same. In this context, the tensile force directly acts on a screw coupling 48 of the screw 40 with the central foot 15.
(13) A combined view of FIGS. 5 and 6 shows a sectional view of an understructure 51 of a transport and storage container not illustrated in more detail here, in the region of a central foot 52. The fundamental construction of the transport and storage container and of the understructure 51 corresponds to the transport and storage container shown in FIGS. 1 to 4, apart from the differences described below. An outer jacket 53 of the understructure 51 rests on a circumferential bearing face 55 of a bottom 56 of the understructure 51 with a pipe 54. The bottom 56 for its part rests on an edge region 57 of the central foot 52 together with a one-piece profiled body 58, which embodies a bottom cross member 59. The bottom cross member 59 or the profiled body 58 couples the central foot 52 to an opposing central foot not illustrated in more detail here. In addition, a screw 60 is envisaged, which has been screwed into an upper side 61 of the central foot 52 made of plastic material, in this way realizing a screw coupling 62. The screw 60 thus couples the outer jacket 53 to the bottom 56, the profiled body 58 or to the bottom cross member 59 and the central foot via pipe 54, whereby an attachment configuration 63 is realized in an attachment point 64 at the central foot 52.
(14) From the enlarged illustration of FIG. 6, it can be seen that the screw 60 has been guided through a clearance opening 65 in the pipe 54, through a clearance opening 66 in the bottom 56, and through a clearance opening 67 in the profiled body 58. In particular, an inside diameter 68 of the clearance opening 65 and an inside diameter 69 of the clearance opening 66 is selected such that the screw 60 or a shank 70 of the screw 60 has been guided through the clearance openings 65 and 66, while a play is realized. An inside diameter of the clearance opening 67 that cannot be seen anymore here is realized so as to be smaller than an outside diameter 71 of the screw 60, such that, upon screwing the screw 60 into the clearance opening 67, an internal screw thread 73 is realized in the clearance opening 67 with the aid of an external screw thread 72 of the screw 60, and thus a screw coupling 74 is realized between the bottom cross member 59 and the screw 60. A tensile force effected by the loading case described above, of a crash of the transport and storage container, acting in the direction of a longitudinal axis 75 of the screw 60, is consequently transmitted into the central foot 53 via the screw 60 in this way, wherein a part of the tensile force is equally transmitted into the profiled body 58 or the bottom cross member 59, as a consequence of the screw coupling 74 being realized. The screw coupling 62 with the central foot 52 is relieved by the amount of this part of the tensile force without the bracket known from the state of the art having to be used.
(15) Complementarily, a second screw 76 is envisaged, with the aid of which the profiled body 58 is coupled to the central foot 52 by screwing them together. The screw 76, the profiled body 58 and the central foot 52 thus realize a further attachment configuration 77, which serves to safely arrange the central foot 52 at the profiled body 58.
(16) FIG. 7 shows a perspective view of the understructure 51 without illustration of the bottom. In particular, it can be seen that the outer jacket 53 is realized from vertical grid bars 78 and horizontal grid bars 79, wherein a lower grid bar 79 of the outer jacket 53 realizes the pipe 54.
(17) FIG. 8 shows an end 80 of the bottom cross member 59, which rests on the upper side 61 of the central foot 52. The bottom cross member 59 or the profiled body 58 is realized from a formed metal sheet and in particular has a clearance opening 81 for the screw 76. In this context, an inside diameter 82 of the clearance opening 81 is realized such that the screw 76 can easily be pushed or screwed through the clearance opening 81. The clearance opening 67, in the illustration shown here, does not have any internal screw thread yet, since the screw 60 has not been screwed in and consequently a screw thread has not been realized yet. In addition, a hollow 83 is realized in the region of the clearance opening 67. The hollow 83 serves to stiffen the screw joint realized at a later point and for guiding the screw upon mounting. An inside diameter 84 of the clearance opening 67 is in particular embodied so as to be smaller than the external screw thread 72 of the screw 60.
