Switchgear

Abstract

This invention relates to a switch cabinet. It includes a frame structure and a mounting plate assembly. The mounting plate assembly has a mounting plate (1) fixed to the frame structure (3) of the switch cabinet (4) via at least one mounting plate holder (2). The mounting plate holder (2) has a support member (5) abutting or fixed to the lower longitudinal edge (6) of the mounting plate (1). The mounting plate (1) is erected on a horizontal support (8, 9) of the frame structure (3) via an angled fixing member (7) of the mounting plate holder (2) using the support member (5). The invention is characterized in that at least one support surface (11) of the support member (5) is a damping element (12) or has a damping element, and the support member (5) is erected on the angled fixing member (7) via the support surface. The mounting plate assembly in the switch cabinet of this invention can withstand high loads and is low in manufacturing cost and easy to operate or transport.

Description

[0001] This application is a divisional application of the invention patent application filed on February 15, 2018, with application number 201880011083.0, PCT international application number PCT / DE2018 / 100139, and entitled "Mounting plate assembly for switch cabinet". Technical Field

[0002] This invention relates to a mounting plate assembly having a mounting plate secured to the frame structure of a switchgear via at least one mounting plate holder. The mounting plate holder has a support member abutting or fixed to the lower longitudinal edge of the mounting plate. The mounting plate is erected on a horizontal support of the frame structure and / or auxiliary frame via the support member and angular fasteners of the mounting plate holder. Such a mounting plate assembly is known from WO 96 / 30978A1. Background Technology

[0003] Depending on the assembly of the mounting plate, which can weigh several hundred kilograms, this load must be borne by the mounting plate holder when the mounting plate is assembled inside the switchgear. Therefore, especially when the switchgear is not completely stationary, such as when it is in motion, for example, because the switchgear is located on an ocean-going vessel, the mounting plate holder bears a correspondingly high load. Consequently, mounting plate holders known in the prior art are constructed as solid steel components, which are complex and expensive to manufacture, or complex to operate or handle. Summary of the Invention

[0004] Therefore, the object of the present invention is to improve the mounting plate assembly of the aforementioned type, so that the mounting plate assembly can withstand high loads on the one hand, and has low manufacturing cost and is easy to operate or transport on the other hand.

[0005] This objective is achieved by the mounting plate assembly of the present invention. The dependent claims relate to advantageous embodiments of the invention.

[0006] Therefore, at least one support surface of the support member is a damping element or the support surface has such a damping element, and the support member is erected on the angled fastener via the aforementioned at least one support surface.

[0007] Practice has proven that two-piece mounting plate holders with angular fasteners and supports are suitable alternatives to solid and rigid steel mounting plate holders to compensate for vibrational loads on the holder. To simplify installation, it is conceivable that the support can be pre-mounted on the mounting plate, allowing the mounting plate to be placed on the angular fastener via the support. If the support has a damping element on its bearing surface, and the support is placed on the angular fastener via this bearing surface, the damping element can withstand vibrations that would cause torsion and wear in a rigid mounting plate holder, thereby improving the stability of the mounting plate assembly.

[0008] To improve the mechanical connection between the support surface and the mounting plate and to enhance the damping effect of the damping element, the support may have a receiving portion in which the longitudinal edge of the lower part of the mounting plate is received.

[0009] To further simplify the pre-installation of the mounting plate relative to the angled fastener, the support member has a pin extending within a pin receptacle of the angled fastener. The pin is buoyantly supported in the pin receptacle. The pin receptacle may have a sliding ramp to allow easy insertion of the pin into the pin receptacle as the mounting plate is swung from an angled position into the vertical direction. The pin may taper at its free end to facilitate insertion into the pin receptacle.

[0010] The damping element of the support member may be made of or have a modulus of elasticity less than that of the material of the frame structure and less than that of the material of the corner fastener. For example, the damping element of the support member may be made of plastic and the corner fastener may be metal, especially steel. The corner fastener may, for example, be trimmed steel. The support member, including the damping element, may be a plastic injection molded part. The frame structure is typically made of trimmed steel. The support member, at least the damping element, may, for example, be made of or have such a thermoplastic, such as polyamide.

[0011] The damping element may have a support wall that extends parallel to the mating support wall of the angled fastener and perpendicular to the support surface. The receiving portion may open toward the mating support wall of the angled fastener, so that when the mounting plate is mounted on the mounting plate holder, the receiving portion is closed by the mating support wall on the side facing the mating support wall of the angled fastener.

[0012] The supporting wall, as part of the angled fastener, can also be made of steel, while the supporting wall of the damping element can be made of an elastic material, such as plastic. Thus, the supporting wall of the damping element is positioned perpendicular to both the supporting wall and the mating supporting wall to absorb vibrations, thereby reducing the load on the mounting plate retainer. The supporting wall can be made of the same material as the support surface, and in particular, both can be constructed as a single piece.

[0013] The flanges, particularly C-shaped or U-shaped flanges, on the outer periphery of the mounting plate can be secured between the supporting wall and the mating supporting wall, wherein the mounting plate rests against one of the supporting wall and the mating supporting wall with its mounting plane for internal expansion members. Here, the mounting plate can rest against the other of the supporting wall and the mating supporting wall with the profile surface of the flange arranged parallel to and spaced apart from the mounting plane. Therefore, the supporting wall and the mating supporting wall can form a shape-fitting receiving portion for the flanges of the mounting plate. Since the supporting wall can be a component of a damping element, it is configured to absorb vibrations perpendicular to both the supporting wall and the mating supporting wall, thereby reducing the load on the mounting plate holder.

[0014] The mounting plate can be secured, particularly tightened, to the mating support wall of the angle fastener via a folded edge, especially via a profile surface of the folded edge that is spaced parallel to the mounting plane of the mounting plate. The mating support wall may have a notch, such as a bolt port and / or a receiving portion for a retaining nut. The folded profile surface may have another notch aligned with the first notch, through which a bolt is guided between the profile surface and the mating support wall. To allow the fastener, such as a bolt, to be inserted from the front of the mounting plate through the aligned notch in the profile surface and the mating support wall of the angle fastener, i.e., through the mounting plane of the mounting plate, the mounting plate may have another notch on its mounting plane that aligns with the aforementioned notch in the profile surface and the mating support wall of the angle fastener.

[0015] The frame structure may have a rectangular bottom frame consisting of two width supports and two depth supports (Tiefenstreben) extending perpendicularly to the width supports. The bottom frame is mounted on an auxiliary frame, which provides a horizontal support surface on the inner periphery of the bottom frame. The corner fasteners have support members that allow them to stand upright on the support surface. Such a frame structure with an auxiliary frame is described in DE 10 2015 121 192 A1.

[0016] The support component may have a support section, through which the angled fastener is supported on a vertical profile surface on the inner periphery of the bottom frame.

[0017] Angular fasteners may have mounting sections that cross the horizontal fastening surfaces of the frame structure. Suitable frame structures are also described in DE 10 2015 121 192 A1. Angular fasteners can be secured, particularly screwed, to the frame structure via mounting sections.

[0018] The mounting section may have hooks, and the angled fasteners are engaged via the hooks into the fastening receptacles of the system holes in the horizontal fastening surfaces of the horizontal bottom frame of the frame structure.

[0019] The angled fastener may have a first pin receiving portion and a second pin receiving portion, wherein when the angled fastener is installed on a depth bracket of a horizontal bottom frame of the frame structure, the pin of the support member is received in the first pin receiving portion, and wherein when the angled fastener is installed on a width bracket of the bottom frame of the frame structure, the pin of the support member is received in the second pin receiving portion. In this regard, the width bracket and the depth bracket of the bottom frame may be constructed, in particular, as identical profiles in a cross-section perpendicular to the longitudinal direction.

[0020] The horizontal and / or vertical fastening surfaces of the deep support of the frame structure may have system holes, which are formed by fastening receptacles arranged in a fixed grid size, wherein the vertical mounting plane of the mounting plate is arranged in a grid size.

[0021] The mounting plate's flange can be configured as a C-shaped flange or a U-shaped flange. The flange may have fastening receptacles arranged with a fixed grid size on a side extending perpendicular to the mounting plane of the mounting plate. The grid size of the fastening receptacle of the C-shaped flange may correspond to the grid size of the vertical profile of the switchgear's frame structure. In this case, the mounting plate holder can be configured such that the grid size of the C-shaped flange aligns with the grid size of the vertical profile of the switchgear's frame structure. In this case, at least one internal expansion member can be guided between the mounting plate's flange and the vertical support, wherein the internal expansion member is connected to the flange via a system hole on one side and to the vertical profile on the other side via a system hole in the vertical profile. Attached Figure Description

[0022] Further details of the invention are illustrated in the following figures. These figures show:

[0023] Figure 1 An exemplary embodiment of the angled fastener is shown in the perspective view;

[0024] Figure 2 An exemplary embodiment of the support member is shown in the perspective view;

[0025] Figure 3 It shows according to Figure 2 Another three-dimensional schematic diagram of the support component;

[0026] Figure 4 An exemplary mounting plate assembly according to an embodiment of the present invention is shown;

[0027] Figure 5 An embodiment of a slider connected to a mounting plate via the lower longitudinal edge of the mounting plate is shown;

[0028] Figure 6 Another embodiment of an exemplary mounting plate assembly is shown; and

[0029] Figure 7 Another embodiment of the mounting plate holder is shown. Detailed Implementation

[0030] Figure 1An exemplary embodiment of the angled fastener 7 is shown. The angled fastener is constructed as a sheet metal forming part. In particular, the sheet metal forming part can be constructed as a two-piece, having a lower support member 23 and an upper member disposed thereon, the upper member being basically composed of a support surface 41, a mating support wall 16 folded from the support surface, and a mounting section 25 molded thereon. As shown, the two components of the angled fastener 7 are basically obtained by stamping and trimming and can be welded to each other.

[0031] The mating support wall 16, folded from the support surface 41, has a receiving portion 40 for a retaining nut, etc., and the mounting plate (not shown) can be tightened to the angle fastener 7 via the retaining nut. The mounting section 25 can be shaped such that when the angle fastener 7 is placed on the horizontal profile of the bottom frame of the switchgear frame structure, as shown, for example, in DE 10 2015 121 192 A1, the mounting section 25 spans the upper horizontal fastening surface of the frame structure, so that the mounting section 25 engages with the horizontal fastening surface 26 of the frame structure from the rear with its vertical section 25.1 (see...). Figure 4 and Figure 6 And here it rests against the first vertical profile surface of the profile frame, while the support member 23 is supported by its support section 24 on the other vertical profile surface of the profile frame. The two vertical profile surfaces of the frame structure can be connected at a 90° angle at the opposite longitudinal edges of the horizontal fastening surface 26 of the frame structure, so that it can be folded from the horizontal fastening surface 26. Here, the hook 27 can engage with the fastening receiving portion 28 in the horizontal fastening surface 26 of the profile frame (see Figure 6 ).

[0032] The angled fastener 7 has first and second pin receiving portions 14, each having a sliding ramp to easily guide the pin 13 during the flipping movement of the mounting plate (see...). Figure 4 Here, when the angle fastener 7 is installed on the depth bracket of the horizontal bottom frame of the frame structure, the pin 13 of the support member 5 can be accommodated in the first pin receiving portion 14. Furthermore, when the angle fastener is installed, for example, on the width bracket of the bottom frame of the frame structure, the pin of the support member can be accommodated in the second pin receiving portion 14. The mounting section 25 also has a bolt port 42 for tightening the angle fastener 7 onto the bottom frame of the frame structure.

[0033] exist Figure 2 and Figure 3 An exemplary embodiment of the support member 5 is shown. The support member 5 may be, for example, a plastic part, and therefore relative to... Figure 1 The angular fastener 7 shown has a smaller elastic modulus, thus the support 5, when mounted according to... Figure 1 The angled fastener 7 is configured to withstand vibration and thus reduce the impact of vibration. Figure 1 and Figure 2The mechanical stress of the mounting plate retainer formed by the components shown. According to Figure 2 and Figure 3 The support member 5 may be, in particular, an injection-molded part. The support member 5 is made of thermoplastic, such as polyamide.

[0034] Support member 5 has a support surface 11, and support member 5 is erected on the angled fixing member 7 via the support surface (see Figure 1 ) on. Combined Figures 2 to 4 As can be seen, a pin 13 can be arranged on the lower side of the support surface 11, and the support member 5 can be engaged via the pin into one of the pin receiving portions 14 of the angled fastener 7. In particular, the support member 5 can dampen the vertical vibration of the mounting plate via its support surface 11, because at least the support surface 11 of the support member 5 can be made of a pin with a shape greater than that of the angled fastener 7 (see...). Figure 1 The material is made of a material with a lower elastic modulus than the material of the angled fastener 7. To withstand vibrations perpendicular to it, i.e., vibrations perpendicular to the support wall 15, the support wall 15 is also made of a material with a lower elastic modulus than the material of the angled fastener 7, for example, of the same plastic as the support surface 11. Therefore, in Figure 2 and Figure 3 In the illustrated embodiment, the support wall 15 and the support surface 11 form a damping element 12.

[0035] Support member 5 has mating member 30, and support member 5 can pass through mounting plate 1 via mating member (see...). Figure 5 The lower longitudinal edge 6 of the mounting plate 1 is inserted into the recess of the lower longitudinal edge 6 and connected to the mounting plate. For this purpose, the mating part 30 has a locking element 31, such as in... Figure 4 and Figure 5 As shown, when the support member 5 is inserted into the mounting plate via the mating member, the engaging member engages from the rear with the L-shaped flange 32 on the lower longitudinal edge 6 of the mounting plate 1. The mating member 30 is specifically configured to be fitted into the mounting plate 1 via the lower longitudinal edge 6 of the mounting plate 1 in a form-fitting connection within the region of the C-shaped or U-shaped flange, thereby fixing the support member 5 relative to the mounting plate 1. Both the mating member 30 and the support wall 15 have recesses 39 at their free ends, forming bolt openings for engagement. Figure 4 and Figure 6 Clearly shown.

[0036] exist Figure 4In the mounting plate assembly shown, the mounting plate 1 is secured to the bottom assembly, which consists of a bottom frame 20 and an auxiliary frame 21, via a mounting plate holder 2, as described in DE 10 2015 121 192A1. Therefore, the details of the geometry of the bottom assembly will not be elaborated here. A key feature of the bottom assembly of the present invention is that the auxiliary frame 21 provides a horizontal support surface 22 on the inner periphery of the bottom frame 20, and the angled fastener 7 is erected on the support surface via its support member 23, thus the mounting plate holder 2 bears the load in the vertical direction. Horizontal forces are supported via a mounting section 25, which surrounds or engages from the rear with the horizontal fastening surface 26 of the bottom frame 20.

[0037] According to Figure 4 In the embodiments, the angled fastener 7 may, for example, correspond to the following: Figure 1 The implementation method is used to construct it. For example, in... Figure 6 As shown, the angled fastener 7 can be tightened to the fastening surface 26 of the bottom frame 20 via bolts 29. The mating support wall 16 has a retaining nut 33 on its outer side facing away from the mounting plate 1. Bolts 34 are screwed into the retaining nut through the mounting plane 18 of the mounting plate 1, through another profile surface 19 of the C-shaped flange 17 of the mounting plate 1 that is spaced parallel to the mounting side, and through the mating support wall 16. The support member 5 is placed on the angled fastener 7 via its damping element 12.

[0038] Combination Figure 4 and Figure 6 It can be seen that the support member 5 with mounting plate 1 can be inserted vertically from an angled position as it reaches the angled fixing member 7, and in this case, pin 13 (see Figure 4 An angled fastener 7 can be placed under the support surface 11 of the support member 5 (see...). Figure 1 In the pin receiving part 14. In order to move the pivoting mounting plate along the sliding track 37, the support member 5, especially the profile 35 of the support member 5, has a protrusion with a guide surface 36, which guides on the vertical outer edge of the sliding track 37.

[0039] As in Figure 6 As shown, the folded edge 17 of the mounting plate 1 is accommodated in the mounting position between the mating support wall 16 of the angled fastener 7 and the support wall 15 of the support member 5, wherein the mounting plate 1 passes through the mounting plane 18 by means of bolts 34 and is tightened to the mating support wall 16 via the profile surface 19 (see also...). Figure 4 ).exist Figure 6In the shown installation position, the mounting plate 1 dampens relative impacts and vibrations in the vertical direction via a support surface 11, which may be made of plastic material, via the angled fastener 7, and via the bottom frame 20. Furthermore, the mounting plate 1 is vibration-damped in the horizontal plane via a support wall 15, which, like the support surface 11, may be made of a material with a lower elastic modulus than the material of the fastener 7. Therefore, in Figure 6 In the illustrated embodiment, the support wall 15 and the support surface 11 form the damping element 12 of the present invention. It can be shown that the mounting plate retainer with the damping element is significantly less prone to wear and can withstand high vibration loads.

[0040] Figure 5 A detailed view of the mounting plate 1 in the area of ​​the folded edge 17 is shown, where the fold is constructed as a C-shaped or U-shaped fold and forms the vertical edge of the mounting plate 1. The mounting plate 1 has an L-shaped fold 32 on its lower horizontal longitudinal edge 6. The L-shaped fold 32 is recessed in the edge area, i.e., in the area of ​​the C-shaped or U-shaped fold 17, thereby forming a receiving portion for the mating member 30 of the support member 5. Figure 5 In the inserted position shown, the engaging member 31 engages the L-shaped flange from the rear, thus securing the support member 5 to the mounting plate 1.

[0041] Figure 7 Another embodiment of the mounting plate holder 2 is shown, comprising an angled fastener 7 and a support member 5. The support member 5 has a notch extending vertically through its support surface 11, through which the angled fastener 7 extends with its mating support wall 16. The angled fastener 7 rests against the underside of the support surface 11 of the support member 5 with its other support surface 41. The angled fastener 7 has a vertical section 25.1 extending perpendicularly to the other support surface 41, and the mounting plate holder 2 is similar to... Figure 1 The angled fastener 7 shown can vertically surround the profile surface of the frame structure so that the mounting plate can be fixed to the frame structure by means of the mounting plate holder 2.

[0042] The support member 5 is basically constructed as a damping element 12, which may be made of thermoplastic plastic, especially polyamide. The support surface 11 of the damping element 12 is two-part and has a first section 11.1 extending perpendicular to the front side of the mating support wall 16 and a second section 11.2 extending perpendicular to the rear side of the mating support wall 16 opposite to the front side.

[0043] In the first installation position, the mounting plate can be positioned with its profile side 19 (see...) Figure 5The mounting plate is fixed to the front side of the mating support wall 16 and erected on the first section 11.1 of the support surface 11. In the second mounting position, the mounting plate can rest against the rear side of the mating support wall 16 with its mounting plane, and simultaneously against the second section 11.2 of the support surface 11. Therefore, in Figure 7 The mounting plate retainer shown is suitable for securing the mounting plate relative to the frame structure in two different mounting positions. Figure 7 The mounting plate holder 2 shown in the diagram specifically allows the mounting plate to be inserted into the frame structure from the outside, particularly the rear side of the switch cabinet, by means of the mounting plate holder 2 pre-installed on the lower edge of the mounting plate. Similar to the previously described embodiment, the mating support wall 16 has a receiving portion 40 for a snap-fit ​​nut or a plug nut.

[0044] The features disclosed in the foregoing description, the accompanying drawings and the claims, whether individually or in any combination, may be important for the implementation of the invention.

[0045] List of reference numerals

[0046] 1 Mounting plate

[0047] 2 Mounting plate retainer

[0048] 3. Frame Structure

[0049] 4. Switchgear

[0050] 5 Support components

[0051] 6. Lower longitudinal edge

[0052] 7 Angle fasteners

[0053] 8-Deep Stent

[0054] 10. Reception area

[0055] 11 Support Surface

[0056] 12 Damping elements

[0057] 13 sales

[0058] 14. Sales Accommodation Department

[0059] 15 Supporting wall

[0060] 16. Matching the supporting wall

[0061] 17 Folded edges

[0062] 18 Mounting Plane

[0063] 19 Profile Surface

[0064] 20 Bottom Frame

[0065] 21. Auxiliary Framework

[0066] 22 Support surfaces

[0067] 23 Support components

[0068] 24 Support Sections

[0069] 25 Installation Sections

[0070] 25.1 Vertical Section

[0071] 26 Fastening surface

[0072] 27 Hook

[0073] 28 Fastening and receiving part

[0074] 29 bolts

[0075] 30 mating parts

[0076] 31-card assembly

[0077] 32 L-shaped fold

[0078] 33 Cassette nuts

[0079] 34 bolts

[0080] 35 Outline

[0081] 36 guide surfaces

[0082] 37 Sliding track

[0083] 38 External sealing surface

[0084] 39 Notch

[0085] 40 Receiving part for clip nuts

[0086] 41 Another support surface

[0087] 42 Bolt port

Claims

1. A switch cabinet comprising a frame structure and a mounting plate assembly having a mounting plate (1) secured to the frame structure (3) of the switch cabinet (4) via at least one mounting plate holder (2), wherein, The mounting plate holder (2) has a support member (5) that abuts against or is fixed to the lower longitudinal edge (6) of the mounting plate (1). The mounting plate (1) is erected on the depth bracket (8) of the frame structure (3) by means of the support member (5) via the corner fastener (7) of the mounting plate holder (2). At least one support surface (11) of the support member (5) has a damping element (12), and the support member (5) is erected on the corner fastener (7) via the support surface. The corner fastener (7) is characterized in that it has a first pin receiving portion and a second pin receiving portion, wherein when the corner fastener (7) is installed on the depth bracket (8) of the horizontal bottom frame (20) of the frame structure (3), the pin (13) of the support member (5) is received in the first pin receiving portion, and wherein when the corner fastener (7) is installed on the width bracket of the bottom frame (20) of the frame structure (3), the pin (13) of the support member (5) is received in the second pin receiving portion.

2. The switchgear according to claim 1, wherein, The support member (5) has a receiving portion (10) in which the longitudinal edge (6) of the lower part of the mounting plate (1) is received.

3. The switchgear according to claim 1, wherein, The support member (5) has a pin (13) that extends in the first pin receiving portion or the second pin receiving portion of the angular fastener (7).

4. The switchgear according to any one of claims 1-3, wherein, The damping element (12) of the support member (5) is a material whose elastic modulus is less than that of the material of the frame structure (3) and less than that of the material of the angled fastener (7).

5. The switchgear according to claim 4, wherein, The damping element (12) of the support member (5) is made of plastic, and the angular fastener (7) is made of metal.

6. The switchgear according to any one of claims 1-3, wherein, The damping element (12) has a support wall (15) that extends parallel to the mating support wall (16) of the angular fastener (7) and perpendicular to the support surface (11) with the damping element.

7. The switchgear according to claim 6, wherein, The flange (17) on the outer periphery of the mounting plate (1) is fixed between the support wall (15) and the mating support wall (16), wherein the mounting plate (1) abuts against one of the support wall (15) and the mating support wall (16) with its mounting plane (18) for internal expansion members, and wherein the mounting plate (1) abuts against the other of the support wall (15) and the mating support wall (16) with profile surfaces (19) arranged parallel to and spaced apart from the mounting plane (18).

8. The switch cabinet according to claim 7, wherein, The mounting plate (1) is fixed to the mating support wall (16) of the angled fastener (7) via the folded edge (17).

9. The switchgear according to claim 8, wherein, The mounting plate (1) is tightened onto the mating support wall (16) of the angle fastener (7) via the profile surface (19) of the folded edge (17) which is arranged parallel to and spaced from the mounting plane (18) of the mounting plate (1).

10. The switchgear according to claim 1, wherein, The frame structure (3) has a rectangular bottom frame (20) including two width supports and two depth supports (8) extending perpendicularly to the width supports, wherein the bottom frame (20) is mounted on an auxiliary frame (21) which provides a horizontal support surface (22) on the inner periphery of the bottom frame (20), and wherein the angular fastener (7) has a support member (23) which is erected on the support surface (22) by means of the support member.

11. The switchgear according to claim 10, wherein, The support component (23) has a support section (24), and the angular fastener (7) is supported via the support section on a vertical profile surface on the inner periphery of the bottom frame (20).

12. The switchgear according to claim 1, wherein, The angular fastener (7) has an installation section (25) which connects to the fastening surface (26) of the frame structure (3) via the installation section.

13. The switchgear according to claim 12, wherein, The angular fastener (7) is fixed to the frame structure (3) via the mounting section (25).

14. The switchgear according to claim 13, wherein, The angled fastener (7) is tightened onto the frame structure (3) via the mounting section (25).

15. The switchgear according to claim 12 or 13, wherein, The mounting section (25) has a hook (27) and the angular fastener (7) is engaged via the hook into the fastening receiving portion (28) of the fastening surface (26) of the horizontal bottom frame (20) of the frame structure (3) in the system hole.

16. The switchgear according to claim 10, wherein, The horizontal and / or vertical fastening surfaces (26) of the depth support (8) of the frame structure (3) have system holes, which are formed by fastening receptacles (28) arranged at fixed grid intervals, wherein the vertical mounting plane (18) of the mounting plate (1) is arranged at the grid intervals.

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