Special external connection distribution box for mining dry-type transformer

Abstract

The utility model provides an external connection distribution box special for a mine dry-type transformer, and relates to the technical field of transformer manufacturing. Comprising a box body, a top cover and a base, wherein the box body comprises a panel (1), a back plate (2), a left side plate (3) and a right side plate (3); the top cover comprises two inclined top plates (4) which are symmetrically arranged, a cross beam which is arranged at the junction of the inclined top plates (4), and a top frame (5) which is matched with the cross section of the box body; the base comprises a bottom frame (7), a bearing plate (8) and supporting feet (9). Corresponding connecting pieces (14) and fastening pieces (6) are arranged between the base and the box body plate, between the box body plate and the top cover and between the box body plate of the distribution box, and corresponding installation processes are matched, so that external connection of the whole field installation process of the distribution box can be achieved, an operator does not need to carry out internal operation of the distribution box, the installation processes are greatly simplified, and the installation efficiency is improved. The installation difficulty is reduced, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer manufacturing, in particular to a special external connection distribution box for a mine dry-type transformer. Background Art

[0002] The types and application fields of distribution boxes are quite wide. Switchgear, measuring instruments, protective electrical appliances and auxiliary equipment are assembled in the box. In normal operation, the circuit can be connected or disconnected with the help of manual or automatic switches. In case of failure or abnormal operation, the circuit can be cut off or alarmed with the help of protective electrical appliances. Measuring instruments can display various parameters in operation, and some electrical parameters can be adjusted, and prompts or signals can be issued for deviations from normal working conditions. It is commonly used in various power generation, distribution and substations. Distribution boxes and distribution cabinets, distribution boards, distribution panels, etc. are complete sets of equipment that centrally install switches, instruments and other equipment.

[0003] Among them, mining distribution boxes have some special requirements for their structural strength, protection performance and functionality due to the special working environment. The existing distribution boxes have simple structures and poor sealing. They are easily contaminated in high-dust environments such as coal mines, causing internal components to fail. In addition, most traditional distribution boxes are manufactured and assembled by manufacturers and then shipped to the site for installation, which increases the difficulty and efficiency of transportation. There are also on-site assembly methods, but due to the limitations of the existing manufacturing and installation processes, the functional parts of the distribution box are mostly connected by rivets, and the installation requires internal and external coordination. The internal space of the distribution box is limited, and the operation difficulty and labor intensity are high, which affects the installation quality and efficiency of the distribution box. Summary of the invention

[0004] In order to solve the above problems, the utility model provides a special external connection distribution box for a mine dry-type transformer.

[0005] The present application adopts the following technical scheme: a special external connection distribution box for dry-type transformers for mining, comprising a box body, a top cover and a base, characterized in that the box body comprises a panel 1, a back panel 2 and two left and right side panels 3 which are vertically connected to each other; wherein the left and right side panels 3 are arranged opposite to each other and have the same structure, and are composed of a plate for setting a heat dissipation curtain inlaid in a frame prepared by a hollow square tube and a bracket composed of a longitudinal beam and a cross beam; and the panel 1 and the back panel 2 comprise a fixed frame 101 and a movable door panel 102, the outer side of the fixed frame 101 is fixedly connected to the side panels 3 on both sides, and the movable door panel 102 is connected to the inner side of the fixed frame 101 by a hinge; elastic buffer layers are arranged on the contact surface between the panel 1 and the left and right side panels 3, and on the contact surface between the back panel 2 and the left and right side panels 3;

[0006] The top cover includes two symmetrically arranged inclined top plates 4, a crossbeam arranged at the junction of the inclined top plates 4, and a top frame 5 matched with the cross section of the box body, wherein the shapes of the two side beams of the top frame 5 match the two inclined top plates 4 and are isosceles triangles;

[0007] Inside the box, any two vertically intersecting plates, that is, the inner side of the intersection of the front panel 1 or the back panel 2 and the left and right side panels 3, are provided with a fastener 6, which is a hollow tubular component with a non-closed triangle in longitudinal section, and the two right-angled sides of the fastener 6 are respectively fitted with the front panel 1 and the left and right side panels 3, or the back panel 2 and the left and right side panels 3; wherein, the first right-angled side 601 fitted with the front panel 1 or the back panel 2 is pre-welded and fixed on the front panel 1 or the back panel 2, and its end is vertically bent and overlapped with the second right-angled side 602, and the overlapping part exceeds the midpoint of the second right-angled side 602; the second right-angled side 602 is fitted on the side panel 3 and presses the part of the first right-angled side 601 that overlaps with it; a bolt hole is opened on the part where the second right-angled side 602 and the first right-angled side 601 overlap, and the bolt hole penetrates outwardly through the corresponding fitted side panel 3, and is The inside of the fastener 6 opposite to the bolt hole is provided with a positioning spring piece 604 which can move axially within a certain stroke and fix the nut 603 in the circumferential direction to prevent it from rotating. The positioning spring piece 604 is composed of a plurality of spring pieces which are bent themselves and have slots on the inside and surround the bolt hole, and the two ends are respectively fixed on the inside of the fastener 6; the bolt is inserted into the bolt hole from the outside of the corresponding side panel 3, and penetrates the overlapping part of the second right-angled side 602 and the first right-angled side 601 opposite to each other on the fastener 6, and then engages with the nut 603 which is opposite to the bolt hole, arranged inside the fastener 6, and clamped on the positioning spring piece 604, and the bolt is continuously rotated from the outside. Since the nut 603 will not rotate axially under the fixation of the positioning spring piece 604, the bolt and the nut 603 are continuously tightened, thereby firmly connecting the panel 1 or the back panel 2, as well as the side panel 3 and the fastener 6.

[0008] The base includes a base frame 7, a pressure plate 8 and a support foot 9; the pressure plate 8 is a plurality of square hollow plates arranged adjacent to each other and fixed on the base frame 7; a support foot 9 is provided under the longitudinal beam of the base frame 7; in the middle part of the base frame 7, the pressure plates 8 at the front and rear ends are lower than the longitudinal beam to form a square groove, and at the same time, an inlet hole 10 and an outlet hole 11 are opened on the outer side of the pressure plate 8 at this part, and a vertical baffle 12 is provided, and the two square grooves are the inlet area and the outlet area of ​​the distribution box.

[0009] On the lower surface of the four vertical intersections of the top frame 5, the same isosceles right triangle-shaped reinforcing plates 13 are fixed, and bolt holes are arranged on the reinforcing plates 13; at the same time, a connecting member 14 is arranged at the bottom, and the connecting member 14 includes three connecting surfaces, among which the upper connecting surface 14-1 horizontally arranged at the top is in contact with the reinforcing plate 13 and has the same shape, and bolt holes are also arranged on it, and the two are connected by bolts; the ends of the other two side connecting surfaces 14-2 of the connecting member 14 are perpendicular to each other, and are respectively in contact with and connected to the panel 1 and the side panel 3 that are vertically connected to each other on the box body, or the upper frame of the side panel 3 and the back panel 2, and the upper sides of the two side connecting surfaces 14-2 are respectively fixedly connected to the two right-angled sides of the upper connecting surface 14-1.

[0010] Symmetrical to the top frame 5 on the top cover, connecting members 14 of the same shape and number are provided at the intersection of the four right angles of the lower part of the box body and the base, and are connected to the base; the shape of the connecting member 14 is the same as that of the connecting member 14 on the top cover, and is symmetrically arranged, and its upper connecting surface 14-1 is transformed into a lower connecting surface 14-3 connected to the pressure plate 8 on the base, and the other two side connecting surfaces 14-2 are respectively attached and connected to the panel 1 and side panel 3 vertically connected to each other on the box body, or the side panel 3 and the lower frame of the back panel 2.

[0011] In order to improve the installation accuracy of the connecting piece 14 installed on the top cover and the bottom frame 7 and prevent the processing angles of the three connecting surfaces from deviating and causing deformation when connecting the box body and the top cover or the bottom frame 7, rectangular notches 14-4 are set at the ends where the three connecting surfaces of the connecting piece 14, i.e., the upper connecting surface 14-1 or the lower connecting surface 14-3 intersect with the two side connecting surfaces 14-2, to eliminate the defect that the entire connecting piece 14 cannot be installed in place because the ends where the three connecting surfaces of the connecting piece 14 intersect cannot completely match the corresponding positions of the box body and the top cover or the bottom frame 7.

[0012] Preferably, an elastic connector 14 is provided between the support foot 9 of the base and the mounting base to improve the overall anti-vibration performance of the distribution box.

[0013] Preferably, the fasteners 6 can be used individually or in combination on the same mounting surface. When used in combination, the spacing between two adjacent fasteners 6 is 50-60 cm. Taking a small distribution box with a height of 1 meter as an example, on the same mounting surface, a fastener 6 is set at the middle position in its height direction to meet the use requirements.

[0014] The distribution box described in the present application is produced by independently manufacturing each panel, top cover and base of the box body, and transporting them to the installation site for on-site assembly; during installation, the base is first cast, and an elastic connector 14 that can only move up and down is installed between the base and the base's support feet 9, and then the base is installed on the base, and the connector 14 is pre-fixed on the base; then the electrical equipment is installed; after completion, the installation of the box body is started, and the panel 1, the back panel 2 and the left and right side panels 3 are fixed to the base from the outside through the pre-set connector 14, and the connector 14 between the top cover and the box body is also pre-installed on the upper end of the panel corresponding to the box body, and after the box is installed, it can also be connected from the outside through the preset connector Part 14 connects the top cover to the box body; finally, the fixed connection between the plates on the box body is performed; the external connecting bolt is inserted from the bolt hole on the outside of the side plate 3, and penetrates the overlapping part of the second right-angled side 602 and the first right-angled side 601 on the opposite side of the inner fastener 6, and then engages with the nut 603 facing the bolt hole, and the bolt is continuously rotated from the outside. Since the nut 603 will not rotate axially under the fixation of the positioning spring piece 604, the bolt and the nut 603 are continuously tightened, and the fastener 6 is pulled close to the side plate 3, and the first right-angled side 601 of the fastener 6 is pre-welded and fixed on the panel 1 or the back plate 2, so the panel 1 or the back plate 2 is also continuously fitted with the side plate 3, and finally firmly connected together.

[0015] The utility model has the following beneficial effects:

[0016] The utility model provides corresponding connectors 14 and fasteners 6 between the base and the box plate, between the box plate and the top cover, and between the box plate, and in coordination with the corresponding installation process, so that the external connection of the distribution box can be achieved throughout the on-site installation. There is no need for operators to perform internal operations of the distribution box, which greatly simplifies the installation process, reduces the difficulty of installation, reduces labor intensity, and speeds up efficiency. Based on this, the production and manufacturing process of the distribution box can be optimized, and each component can be manufactured separately, transported uniformly, and installed on-site, thereby realizing the continuity and scale of the production of the distribution box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the distribution box of the utility model.

[0018] Figure 2 It is an assembly diagram of the distribution box of the utility model,

[0019] Figure 3 It is a schematic diagram of the panel structure of the distribution box of the utility model.

[0020] Figure 4 It is a schematic diagram of the base structure of the distribution box of the utility model.

[0021] Figure 5It is a schematic diagram of the top frame structure of the distribution box of the utility model.

[0022] Figure 6 It is a schematic diagram of the fastener structure of the distribution box of the utility model.

[0023] Figure 7 yes Figure 6 A partial cutaway diagram of .

[0024] Figure 8 It is a structural schematic diagram of the connecting parts on the top frame of the distribution box described in the utility model.

[0025] Fig. 9 It is a structural schematic diagram of the connecting parts on the base frame of the distribution box of the utility model.

[0026] Fig.10 It is a schematic diagram of the structure of the connecting parts on the base frame described in Example 2.

[0027] In the figure, panel 1, fixed frame 101, movable door panel 102, back panel 2, side panel 3, inclined top panel 4, top frame 5, fastener 6, first right angle side 601, second right angle side 602, nut 603, positioning spring 604, bottom frame 7, pressure plate 8, support foot 9, wire inlet hole 10, wire outlet hole 11, vertical baffle 12, reinforcement plate 13, connector 14, upper connecting surface 14-1, side connecting surface 14-2, lower connecting surface 14-3, rectangular notch 14-4. DETAILED DESCRIPTION Example 1

[0028] like Figure 1-9 As shown, the embodiment described is a special external connection distribution box for dry-type transformers for mining, including a box body, a top cover and a base; the box body includes a panel 1, a back panel 2 and two left and right side panels 3 connected vertically to each other; wherein the left and right side panels 3 are arranged oppositely and have the same structure, and are composed of a plate with a heat dissipation curtain embedded in a frame prepared by a hollow square tube and a bracket composed of a longitudinal beam and a cross beam; and the panel 1 and the back panel 2 include a fixed frame 101 and a movable door panel 102, the outer side of the fixed frame 101 is fixedly connected to the side panels 3 on both sides, and the movable door panel 102 is connected to the inner side of the fixed frame 101 by a hinge; elastic buffer layers are arranged on the contact surface between the panel 1 and the left and right side panels 3, and on the contact surface between the back panel 2 and the left and right side panels 3; the top cover includes two symmetrically arranged inclined top panels 4, a cross beam arranged at the junction of the inclined top panels 4, and a top frame 5 matched with the cross section of the box body, wherein the shape of the two side beams of the top frame 5 coincides with the two inclined top panels 4, forming an isosceles triangle.

[0029] Inside the box, any two vertically intersecting plates, that is, the inner side of the intersection of the front panel 1 or the back panel 2 and the left and right side panels 3, are provided with a fastener 6, which is a hollow tubular component with a non-closed triangle in longitudinal section, and the two right-angled sides of the fastener 6 are respectively fitted with the front panel 1 and the left and right side panels 3, or the back panel 2 and the left and right side panels 3; wherein, the first right-angled side 601 fitted with the front panel 1 or the back panel 2 is pre-welded and fixed on the front panel 1 or the back panel 2, and its end is vertically bent and overlapped with the second right-angled side 602, and the overlapping part exceeds the midpoint of the second right-angled side 602; the second right-angled side 602 is fitted on the side panel 3 and presses the part of the first right-angled side 601 that overlaps with it; a bolt hole is opened on the part where the second right-angled side 602 and the first right-angled side 601 overlap, and the bolt hole penetrates outwardly through the corresponding fitted side panel 3, and is The inside of the fastener 6 opposite to the bolt hole is provided with a positioning spring piece 604 which can move axially within a certain stroke and fix the nut 603 in the circumferential direction to prevent it from rotating. The positioning spring piece 604 is composed of a plurality of spring pieces which are bent themselves and have slots on the inside and surround the bolt hole, and the two ends are respectively fixed on the inside of the fastener 6; the bolt is inserted into the bolt hole from the outside of the corresponding side panel 3, and penetrates the overlapping part of the second right-angled side 602 and the first right-angled side 601 opposite to each other on the fastener 6, and then engages with the nut 603 which is opposite to the bolt hole, arranged inside the fastener 6, and clamped on the positioning spring piece 604, and the bolt is continuously rotated from the outside. Since the nut 603 will not rotate axially under the fixation of the positioning spring piece 604, the bolt and the nut 603 are continuously tightened, thereby firmly connecting the panel 1 or the back panel 2, as well as the side panel 3 and the fastener 6.

[0030] The base includes a base frame 7, a pressure plate 8 and a support foot 9; the pressure plate 8 is a plurality of square hollow plates arranged adjacent to each other and fixed on the base frame 7; a support foot 9 is provided under the longitudinal beam of the base frame 7; in the middle part of the base frame 7, the pressure plates 8 at the front and rear ends are lower than the longitudinal beam to form a square groove, and at the same time, an inlet hole 10 and an outlet hole 11 are opened on the outer side of the pressure plate 8 at this part, and a vertical baffle 12 is provided, and the two square grooves are the inlet area and the outlet area of ​​the distribution box.

[0031] Symmetrical to the top frame 5 on the top cover, connecting members 14 of the same shape and number are provided at the intersection of the four right angles of the lower part of the box body and the base, and are connected to the base; the shape of the connecting member 14 is the same as that of the connecting member 14 on the top cover, and is symmetrically arranged, and its upper connecting surface 14-1 is transformed into a lower connecting surface 14-3 connected to the pressure plate 8 on the base, and the other two side connecting surfaces 14-2 are respectively attached and connected to the panel 1 and side panel 3 vertically connected to each other on the box body, or the side panel 3 and the lower frame of the back panel 2.

[0032] The overall height of the distribution box is 1780 mm, so two fasteners 6 installed on the same inner mounting surface can meet the use requirements. Example 2

[0033] like Figure 1-7 As shown in Figure 10, the structure of the distribution box described in this embodiment is basically the same as that described in Example 1, with the difference that, on the lower surface of the four vertical intersections of the top frame 5, the same isosceles right triangle-shaped reinforcing plates 13 are fixed, and bolt holes are arranged on the reinforcing plates 13; at the same time, a connecting member 14 is arranged at the bottom, and the connecting member 14 includes three connecting surfaces, among which the upper connecting surface 14-1 horizontally arranged at the top is in contact with the reinforcing plate 13 and has the same shape, and bolt holes are also arranged on it, and the two are connected by bolts; the ends of the other two side connecting surfaces 14-2 of the connecting member 14 are perpendicular to each other, and are respectively in contact with and connected to the upper frames of the panel 1 and the side panel 3 vertically connected to each other on the box body, or the side panel 3 and the back panel 2, and the upper sides of the two side connecting surfaces 14-2 are respectively fixedly connected to the two right-angled sides of the upper connecting surface 14-1.

[0034] A rectangular notch 14 - 4 is provided at the end where the three connecting surfaces of the connecting member 14 , ie, the upper connecting surface 14 - 1 or the lower connecting surface 14 - 3 intersects with the two side connecting surfaces 14 - 2 .

[0035] An elastic connector 14 is provided between the support foot 9 of the base and the mounting base to improve the overall anti-vibration performance of the distribution box.

Claims

1. A special external connection distribution box for dry-type transformers for mining, comprising a box body, a top cover and a base, characterized in that: The box body comprises a front panel (1), a back panel (2) and two left and right side panels (3) which are vertically connected to each other; wherein the left and right side panels (3) are arranged opposite to each other and have the same structure, and are composed of a plate with a heat dissipation curtain embedded in a frame made of a hollow square tube and a bracket composed of a longitudinal beam and a transverse beam; the front panel (1) and the back panel (2) comprise a fixed frame (101) and a movable door panel (102); the outer side of the fixed frame (101) is fixedly connected to the side panels (3) on both sides, and the movable door panel (102) is connected to the inner side of the fixed frame (101) by a hinge; elastic buffer layers are provided on the contact surface between the front panel (1) and the left and right side panels (3), and on the contact surface between the back panel (2) and the left and right side panels (3); The top cover comprises two symmetrically arranged inclined top plates (4), a crossbeam arranged at the junction of the inclined top plates (4), and a top frame (5) matching the cross section of the box body, wherein the shapes of the two side beams of the top frame (5) match the two inclined top plates (4) and are in the form of an isosceles triangle; Inside the box, any two vertically intersecting plates, i.e., the inner sides of the intersections of the front panel (1) or the back panel (2) and the left and right side panels (3), are provided with fasteners (6); The fastener (6) is a hollow tubular member with a non-closed triangular longitudinal section, and the two right-angled sides of the fastener (6) are respectively fitted with the panel (1) and the left and right side panels (3), or the back panel (2) and the left and right side panels (3); wherein the first right-angled side (601) fitted with the panel (1) or the back panel (2) is pre-welded and fixed to the panel (1) or the back panel (2), and its end is vertically bent and overlapped with the second right-angled side (602), and the overlapping portion exceeds the midpoint of the second right-angled side (602); the second right-angled side (602) is fitted on the side panel (3) and presses the portion of the first right-angled side (601) that overlaps with it; a slot is provided on the portion of the second right-angled side (602) and the first right-angled side (601) that overlaps A bolt hole, the bolt hole penetrates outwardly through the corresponding fitted side plate (3), and a positioning spring piece (604) is arranged inside the fastener (6) opposite to the bolt hole, which can move axially within a certain stroke and fix the nut (603) in the circumferential direction to prevent the nut (603) from rotating. The positioning spring piece (604) is composed of a plurality of spring pieces that are bent and have slots arranged inside, surrounding the bolt hole, and the two ends are respectively fixed to the inside of the fastener (6); the bolt penetrates into the bolt hole from the outside of the corresponding side plate (3), and penetrates the overlapping portion of the second right-angle side (602) and the first right-angle side (601) on the fastener (6), and then engages with the nut (603) that is arranged inside the fastener (6) and is opposite to the bolt hole and is clamped on the positioning spring piece (604); The base comprises a base frame (7), a pressure plate (8) and a support foot (9); the pressure plate (8) is a plurality of square hollow plates arranged adjacent to each other and fixed on the base frame (7); a support foot (9) is arranged below the longitudinal beam of the base frame (7); in the middle part of the base frame (7), the pressure plates (8) at the front and rear ends thereof are lower than the longitudinal beam to form a square groove, and at the same time, an inlet hole (10) and an outlet hole (11) are opened on the outside of the pressure plate (8) at this part and a vertical baffle (12) is arranged, and the two square grooves are the inlet area and the outlet area of ​​the distribution box.

2. The external connection distribution box for dry-type transformer for mining use according to claim 1 is characterized in that: The same reinforcing plates (13) in the shape of isosceles right triangles are fixed to the lower surfaces of the four vertical intersections of the top frame (5), and bolt holes are arranged on the reinforcing plates (13); a connecting member (14) is arranged at the bottom, and the connecting member (14) comprises three connecting surfaces, wherein an upper connecting surface (14-1) arranged horizontally at the top and in contact with the reinforcing plate (13) and having the same shape, and bolt holes are also arranged on the upper connecting surface, and the two are connected by bolts; the ends of the other two side connecting surfaces (14-2) of the connecting member (14) are perpendicular to each other, and are respectively in contact with and connected to the upper frames of the panel (1) and the side panel (3) vertically connected to each other on the box body, or the side panel (3) and the back panel (2), and the upper sides of the two side connecting surfaces (14-2) are respectively fixedly connected to the two right-angled sides of the upper connecting surface (14-1).

3. The external connection distribution box for a dry-type transformer for mining use according to claim 2 is characterized in that: Symmetrically to the top frame (5) on the top cover, connecting pieces (14) of the same shape and number are provided at the intersections of the four right angles of the lower part of the box body and the base, and are connected to the base; the connecting piece (14) has the same shape as the connecting piece (14) on the top cover and is symmetrically arranged, with the upper connecting surface (14-1) becoming the lower connecting surface (14-3) connected to the pressure plate (8) on the base, and the other two side connecting surfaces (14-2) respectively abutting and connecting to the lower frames of the panel (1) and the side panel (3) vertically connected to each other on the box body, or the side panel (3) and the back panel (2).

4. A special external connection distribution box for dry-type transformer for mining according to claim 2 or 3, characterized in that: Rectangular notches (14-4) are provided at the ends where the three connecting surfaces of the connecting piece (14), i.e., the upper connecting surface (14-1) or the lower connecting surface (14-3) intersect with the two side connecting surfaces (14-2), thereby eliminating the defect that the entire connecting piece (14) cannot be installed in place due to the ends where the three connecting surfaces of the connecting piece (14) intersect with the corresponding positions of the box body and the top cover or the bottom frame (7) not being completely matched.

5. The external connection distribution box for dry-type transformer for mining use according to claim 1 is characterized in that: An elastic connecting piece (14) is provided between the support foot (9) of the base and the mounting base, thereby improving the overall anti-vibration performance of the distribution box.

6. The external connection distribution box for dry-type transformer for mining use according to claim 1 is characterized in that: The fasteners (6) can be used individually or in combination on the same installation surface; when used in combination, the distance between two adjacent fasteners (6) is 50-60 cm.

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