Symmetrical structural profile connecting device of control cabinet

Abstract

The utility model provides a control cabinet symmetrical structure profile connecting device. The control cabinet symmetrical structure profile connecting device comprises a three-phase communicating piece and three beams. The three-phase communicating piece comprises a connecting body, the connecting body is of a right-angle triangular pyramid structure, the three side faces of the connecting body are each perpendicularly provided with an inserting arm, and the cross section of each inserting arm is of an axial symmetry structure. The shape of the beam corresponds to that of the inserting arm, the beam is of a hollow symmetrical profile structure, and the inner end of the beam and the inserting arm are connected in an inserting mode and detachably connected and fixed. The three-phase connecting piece is simple in structure and low in cost, the inserting arms of the three-phase connecting piece are of an axisymmetric structure, the beams connected with the inserting arms are of a symmetric profile structure, the supporting stability and firmness of the three-phase connecting piece are improved, the requirement for vibration resistance of equipment in the wind power field is met, and the service life of the three-phase connecting piece is prolonged. And the defects that after the unit operates in a wind field for a long time, corners of the frame are easy to open and corrode are overcome.

Description

Technical Field

[0001] The utility model belongs to the field of control cabinet production, in particular to a symmetrical structural profile connecting device of a control cabinet. Background Art

[0002] At present, the control cabinets used in wind power units are mostly formed by splicing and welding frame profiles. In actual operations, it is found that some profiles are welded or connected with thinner sheet metal parts on two adjacent surfaces during frame splicing and welding, which has low strength. In addition, the frame profile joints are prone to cracking after long-term operation of the unit. The welded frame will accelerate corrosion, posing a safety hazard to the overall performance of the unit. Due to the small cabin space, it is not convenient to quickly replace the cracked frame, resulting in an overall high frame maintenance cost. Utility Model Content

[0003] In view of this, the utility model aims to provide a symmetrical structural profile connection device for a control cabinet to solve the problems of low strength, easy cracking and inconvenient replacement of the existing frame.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A control cabinet symmetrical structural profile connection device, comprising three connecting pieces and three beams;

[0006] The three-way connecting piece comprises a connecting body, which is a right-angled triangular pyramid structure, and each of its three side surfaces is vertically provided with a plug-in arm, and the cross section of the plug-in arm is an axisymmetric structure;

[0007] The beam is a hollow symmetrical profile structure with a shape corresponding to the plug-in arm, and the inner end of the beam is plugged and detachably connected and fixed to the plug-in arm.

[0008] Furthermore, the connection body includes three connection plates, each of which is an isosceles right-angled triangle plate structure, and the three connection plates are fixedly connected in the right-angled triangular pyramid structure.

[0009] Further, the cross section of the plug arm is a hexagonal structure, including an inner side surface and an outer side surface that are parallel to each other, and two first side surfaces symmetrically arranged on the left and right sides of the inner side surface, and two second side surfaces symmetrically arranged on the left and right sides of the outer side surface, wherein the inner side surface is directly opposite to the vertex of the connecting body, the first side surface and the inner side surface share a common edge, the second side surface and the outer side surface share a common edge, and the first side surface and the second side surface on the corresponding side share a common edge;

[0010] The beam is a hexagonal profile structure, which includes a first fixed plate, a second fixed plate, and two first fixed side plates symmetrically arranged on the left and right sides of the first fixed plate, and two second fixed side plates symmetrically arranged on the left and right sides of the second fixed plate;

[0011] The plug-in arm is inserted into the beam, the inner side of the connecting arm corresponds to the first fixed plate of the beam, the outer side corresponds to the second fixed plate, the two first side surfaces each correspond to a first fixed side plate, and the two second side surfaces each correspond to a second fixed side plate.

[0012] Furthermore, the plug-in arm and the beam are connected by screws, and screw connection structures are respectively provided between the inner side surface of the plug-in arm and the first fixed plate of the beam, between the first side surface and the first fixed side plate, and between the outer side surface and the second fixed plate.

[0013] Furthermore, the two first side surfaces of the plug-in arm are respectively provided with guide grooves for plugging with the beam, and the two first fixed side plates are respectively provided with bending grooves along the length direction of the beam. The bending grooves protrude from the inner side surfaces of the first fixed side plates and correspond to the guide grooves, and the bending grooves and the guide grooves form a sliding connection structure.

[0014] Furthermore, the first fixed plate and the two first fixed side plates are respectively provided with modular holes and a plurality of weight-reducing holes, and the modular holes and the weight-reducing holes are staggered.

[0015] Furthermore, the beam is a plate bending part, and the starting end and the ending end of the plate are butt-jointed to form the second fixing plate.

[0016] Furthermore, the starting end and the terminating end are respectively provided with flanges facing outwards, and the starting end and the terminating end are respectively in close contact with the corresponding flanges;

[0017] The flanges are provided with notches at equal intervals.

[0018] Furthermore, the three connecting pieces are integrally formed, and the plug-in arm is a hollow structure.

[0019] Compared with the prior art, the control cabinet symmetrical structural profile connection device described in the utility model has the following advantages:

[0020] The utility model has the advantages of simple structure, low cost, mass production and easy use. In the utility model, the plug-in arms of the three connecting parts are axially symmetrical structures, and the beams connected to the plug-in arms are symmetrical profile structures, which improve the supporting stability and firmness of the utility model, meet the vibration resistance of equipment in the wind power field, and solve the shortcomings of easy welding and corrosion of the frame corners of the unit after long-term operation in the wind farm. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1It is a three-dimensional schematic diagram of a symmetrical structural profile connection device for a control cabinet according to an embodiment of the utility model;

[0023] Figure 2 This is a front perspective schematic diagram of three connecting parts in this embodiment;

[0024] Figure 3 This is a rear perspective schematic diagram of three connecting parts in this embodiment;

[0025] Figure 4 Schematic diagram of the cross-sectional structure of the beam in this embodiment;

[0026] Figure 5 This is a front-view stereoscopic diagram of the beam in this embodiment;

[0027] Figure 6 It is a three-dimensional schematic diagram of the rear view of the beam in this embodiment.

[0028] Description of reference numerals:

[0029] 1-three-way connecting piece; 11-connecting body; 12-plug-in arm; 121-inner side; 122-outer side; 123-first side; 124-second side; 125-guide groove; 2-beam; 201-first fixed plate; 202-second fixed plate; 203-first fixed side plate; 204-second fixed side plate; 205-bending groove; 206-modulus hole; 208-weight-reducing hole; 209-notch; 210-flange; 2021-starting end; 2022-terminating end. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0031] like Figure 1 As shown, a control cabinet symmetrical structural profile connection device includes three connecting pieces 1 and three beams 2 detachably connected thereto, and the three beams 2 are arranged in the X-axis direction, the Y-axis direction and the Z-axis direction respectively.

[0032] The three-way connecting piece 1 is a cast aluminum part, which is cast in one step by a pressure casting mold to improve its strength, ensure the firmness of the overall frame cabinet, and ensure the stability of the components inside the cabinet when the unit is running. The three-way connecting piece 1 is connected to a beam 2 in each of the three directions of the X axis, Y axis and Z axis. Its structure is as follows Figure 2 , Figure 3As shown, it includes a connecting body 11 and three plug-in arms 12 each corresponding to a beam 2. The connecting body 11 includes three connecting plates, and the connecting plates are isosceles right-angled triangle plate structures. The three connecting plates are fixedly connected in a right-angled triangular pyramid structure. The three plug-in arms 12 are arranged one by one with the three outer side surfaces of the connecting body 11. The plug-in arms 12 are perpendicular to the outer side surfaces corresponding thereto. The cross section of the plug-in arms 12 is an axisymmetric structure, and the axis of symmetry is the right angle bisector of the connecting plate, that is, the axis of symmetry passes through the vertex of the connecting body 11.

[0033] Specifically, the cross-section of the plug arm 12 is a hexagonal structure, including a parallel inner side surface 121 and an outer side surface 122, and two first side surfaces 123 symmetrically arranged on the left and right sides of the inner side surface 121, and two second side surfaces 124 symmetrically arranged on the left and right sides of the outer side surface 122. The inner side surface 121 is opposite to the vertex of the connecting body 11, the first side surface 123 and the inner side surface 121 share a common edge, the second side surface 124 and the outer side surface 122 share a common edge, and the first side surface 123 and the second side surface 124 on the corresponding side share a common edge.

[0034] In the present invention, the plug arm 12 is preferably a hollow structure to reduce the weight of the connecting device.

[0035] The structure of beam 2 is as follows Figure 4 , Figure 5 and Figure 6 As shown, the beam 2 is formed by rolling and bending a whole steel plate at one time, and the shape is also a hexagonal structure, corresponding to the plug arm 12. It includes a first fixing plate 201, a second fixing plate 202, two first fixing side plates 203 and two second fixing side plates 204; wherein the first fixing plate 201 is corresponding to the inner side 121 of the plug arm 12, the second fixing plate 202 is corresponding to the outer side 122 of the plug arm 12, the two first fixing side plates 203 are respectively corresponding to a first side 123 of the plug arm 12, and the two second fixing side plates 204 are respectively corresponding to a second side 124 of the plug arm 12, so the beam 2 is also an axisymmetric structure. During assembly, the plug arm 12 is inserted into the inner end of the beam 2 and fixed by screw connection. In the utility model, screw connection structures are respectively provided between the inner side surface 121 of the plug-in arm 12 and the first fixed plate 201 of the beam 2, between the two first side surfaces 123 and the two first fixed side plates 203, and between the outer side surface 122 and the second fixed plate 202. During assembly, the screw connection structures at appropriate positions are selected as needed, and the beam 2 and the plug-in arm 12 are connected and fixed by screws.

[0036] In order to quickly install the beam 2 and the plug-in arm 12, the two first side surfaces 123 of the plug-in arm 12 are respectively provided with guide grooves 125 for plugging with the beam 2, and the two first fixed side plates 203 are respectively provided with bending grooves 205 along the length direction of the beam 2. The bending grooves 205 protrude from the inner side surfaces of the first fixed side plates 203 and correspond to the guide grooves 125. During assembly, the bending grooves 205 and the guide grooves 125 form a sliding connection structure, which guides and limits the insertion of the beam 2 and the plug-in slot 12, thereby improving the assembly accuracy between the beam 2 and the plug-in slot 12. In addition to the above-mentioned guiding function, the bending grooves 205 also have the function of increasing the strength of the beam 2.

[0037] The first fixing plate 201 and the two first fixing side plates 203 of the beam 2 are respectively provided with modular holes 206 to facilitate the multi-dimensional fixing of the mounting beam and the mounting plate in the electric control cabinet. The first fixing plate 201 and the two first fixing side plates 203 are also respectively provided with a plurality of weight-reducing holes 208, and the modular holes 206 and the weight-reducing holes 208 are staggered.

[0038] Since the beam 2 is a plate bending part, in the structure of the utility model, the starting end 2021 and the ending end 2022 of the plate are butted together to form the second fixing plate 202. The starting end 2021 and the ending end 2022 are respectively provided with flanges 210 outwardly, and the starting end 2021 and the ending end 2022 are respectively in close contact with the corresponding flanges 210 to improve the strength of the beam 2 and prevent the plate from being easily deformed at the butt joint. Notches 209 are evenly spaced apart between the two flanges 210 to reduce the weight of the beam 2.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A symmetrical structural profile connection device for a control cabinet, characterized in that: It comprises three connecting parts (1) and three beams (2); The three-way connecting piece (1) comprises a connecting body (11), the connecting body (11) is a right-angled triangular pyramid structure, and each of its three side surfaces is vertically provided with a plug-in arm (12), and the cross section of the plug-in arm (12) is an axisymmetric structure; The beam (2) is a hollow symmetrical profile structure having a shape corresponding to that of the plug-in arm (12); the inner end of the beam (2) and the plug-in arm (12) are plugged and detachably connected and fixed.

2. A control cabinet symmetrical structural profile connection device according to claim 1, characterized in that: The connecting body (11) comprises three connecting plates, each of which is an isosceles right-angled triangle plate structure, and the three connecting plates are fixedly connected in the right-angled triangular pyramid structure.

3. A control cabinet symmetrical structural profile connection device according to claim 1, characterized in that: The plug arm (12) has a hexagonal cross-section, comprising an inner side surface (121) and an outer side surface (122) that are parallel to each other, and two first side surfaces (123) that are symmetrically arranged on the left and right sides of the inner side surface (121), and two second side surfaces (124) that are symmetrically arranged on the left and right sides of the outer side surface (122), wherein the inner side surface (121) is directly opposite to the vertex of the connecting body (11), the first side surface (123) and the inner side surface (121) share a common edge, the second side surface (124) and the outer side surface (122) share a common edge, and the first side surface (123) and the second side surface (124) on the corresponding side share a common edge; The beam (2) is a hexagonal profile structure, comprising a first fixed plate (201), a second fixed plate (202), two first fixed side plates (203) symmetrically arranged on the left and right sides of the first fixed plate (201), and two second fixed side plates (204) symmetrically arranged on the left and right sides of the second fixed plate (202); The plug-in arm (12) is inserted into the beam (2), the inner side surface (121) of the plug-in arm (12) corresponds to the first fixed plate (201) of the beam (2), the outer side surface (122) corresponds to the second fixed plate (202), the two first side surfaces (123) each correspond to a first fixed side plate (203), and the two second side surfaces (124) each correspond to a second fixed side plate (204).

4. A control cabinet symmetrical structural profile connection device according to claim 3, characterized in that: The plug-in arm (12) and the beam (2) are connected by screws, and screw connection structures are respectively provided between the inner side surface (121) of the plug-in arm (12) and the first fixed plate (201) of the beam (2), between the first side surface (123) and the first fixed side plate (203), and between the outer side surface (122) and the second fixed plate (202).

5. A control cabinet symmetrical structural profile connection device according to claim 3, characterized in that: The two first side surfaces (123) of the plug-in arm (12) are respectively provided with guide grooves (125) for plugging with the beam (2); the two first fixed side plates (203) are respectively provided with bending grooves (205) along the length direction of the beam (2); the bending grooves (205) protrude from the inner side surfaces of the first fixed side plates (203) and correspond to the guide grooves (125); the bending grooves (205) and the guide grooves (125) form a sliding connection structure.

6. A control cabinet symmetrical structural profile connection device according to claim 3, characterized in that: The first fixed plate (201) and the two first fixed side plates (203) are respectively provided with a modular hole (206) and a plurality of weight-reducing holes (208), and the modular holes (206) and the weight-reducing holes (208) are arranged in a staggered manner.

7. A control cabinet symmetrical structural profile connection device according to claim 3, characterized in that: The beam (2) is a plate-bent part, and the starting end (2021) and the ending end (2022) of the plate are butt-jointed to form the second fixing plate (202).

8. A control cabinet symmetrical structural profile connection device according to claim 7, characterized in that: The starting end (2021) and the terminating end (2022) are respectively provided with flanges (210) facing outwards, and the starting end (2021) and the terminating end (2022) are respectively in close contact with the corresponding flanges (210); The flange (210) is provided with notches (209) at equal intervals.

9. A control cabinet symmetrical structural profile connection device according to claim 1, characterized in that: The three-term connecting piece (1) is integrally formed, and the plug-in arm (12) is a hollow structure.

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