CN212182766U

CN212182766U - High-strength steel section convenient to assemble and suitable for frame of switch cabinet body

Info

Publication number: CN212182766U
Application number: CN202021011943.1U
Authority: CN
Inventors: 李凌霄; 李颖超
Original assignee: Shenyang Jingrui Technology Co ltd
Current assignee: Shenyang Jingrui Technology Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-12-18
Anticipated expiration: 2030-06-05

Abstract

The utility model discloses a high-strength steel section bar which is convenient to assemble and is suitable for a frame of a switch cabinet body, belonging to the technical field of manufacturing of low-voltage switch cabinet bodies, comprising a section steel main body with a rectangular structure in section, wherein one side of the section steel main body is disconnected along the length direction thereof and forms a first closed edge and a second closed edge, and the first closed edge and the second closed edge are connected in a closed way through a mutually meshed closed structure; the middle part of the lower side surface part of the profile steel main body protrudes towards the inner side of the profile steel main body to form a support body, the inner side of the support body is spliced with a splicing plate, the middle part of the splicing plate is flush with the two side parts of the lower side surface part, the middle part of the splicing plate is provided with a row of side connecting holes at equal intervals along the length direction of the splicing plate, and two ends of the two side parts of the splicing plate and the support body are provided with positioning holes; the circular connecting hole is a stretching hole, and one side of the rectangular connecting hole is provided with a nut passing hole in a communicating manner. The utility model discloses the rigidity is big, and intensity is high, and processing is convenient, and the equipment is convenient, economical and practical, and is energy-concerving and environment-protective.

Description

High-strength steel section convenient to assemble and suitable for frame of switch cabinet body

Technical Field

The utility model relates to a low-voltage switchgear body makes technical field, specificly relates to a convenient high strength steel section who is applicable to cubical switchboard body frame of equipment.

Background

With the development of domestic power distribution technology, the existing steel section bars are various, most typically C section bars and 8MF section bars, the section bars of the structure are very widely applied, and the structure has the advantages of simple manufacture, flexible combination, convenient installation and lower cost than the aluminum section bars with the same specification.

Because the two common sectional materials have respective advantages and disadvantages, for example, the C sectional material has poor rigidity and strength after being assembled due to the simple assembly structure, and has limited load capacity after being assembled into the switch cabinet, and particularly, after the C sectional material is used in a large amount of distribution primary equipment, the stability and the cabinet body strength of the C sectional material cannot meet the requirements of high strength and dynamic stability of the switch cabinet body in the operation process of the distribution cabinet. The strength of the 8MF section is superior to that of the C section, but the 8MF section is formed by rolling a hot-rolled steel plate and then needs to be processed by welding, polishing, acid washing, phosphating, spraying and other processes, so that the manufacturing process is complex and is not beneficial to environmental protection. Therefore, the steel section suitable for the frame of the switch cabinet body is high in rigidity and strength, convenient to process, economical, practical, energy-saving and environment-friendly.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

The to-be-solved technical problem of the utility model is to provide a convenient high strength steel section bar who is applicable to cubical switchboard body frame of equipment, its rigidity is big, and intensity is high, and processing is convenient, and the equipment is convenient, economical and practical, energy-concerving and environment-protective.

2. Technical scheme

In order to solve the above problem, the utility model adopts the following technical scheme:

the high-strength steel section convenient to assemble and suitable for the frame of the switch cabinet body comprises a section steel main body, wherein two rows of connecting holes extending along the length direction of the section steel main body are symmetrically formed in the front surface of the section steel main body, and each row of connecting holes comprises round connecting holes and rectangular connecting holes which are alternately distributed at intervals; the section of the section steel main body is of a rectangular structure, one side of the section steel main body is broken along the length direction of the section steel main body to form a first closed edge and a second closed edge, and the first closed edge and the second closed edge are in closed connection through mutually meshed closed structures; the profile steel main body is divided into a back part, an upper side part, a front part and a lower side part, the middle part of the lower side part protrudes towards the inner side of the profile steel main body to form a support body, the support body comprises a supporting straight section perpendicular to the back part and two abutting arc sections connected to the two end sides of the supporting straight section, the two abutting arc sections respectively abut against the inner sides of the back part and the front part, one end of each abutting arc section is connected with the supporting straight section, and the other end of each abutting arc section is connected with the corresponding end side of the lower side part through a U-shaped connecting section;

the supporting body is characterized in that inserting grooves are formed in the two sides of the supporting body respectively, inserting plates are inserted into the inner side of the supporting body, the middle of each inserting plate is flush with the two sides of the lower side surface part, inserting edges matched with the corresponding side inserting grooves are formed at the two ends of each inserting plate, a row of side connecting holes are formed in the middle of each inserting plate at equal intervals along the length direction of the inserting plate, positioning holes are formed in the two end sides of each inserting edge in a penetrating mode, and positioning holes communicated with the positioning holes in the corresponding side inserting edges are formed in the two side parts of the supporting body in a penetrating mode; circular connecting hole is tensile hole, two rows of connecting holes the back of the body side intercommunication formula of rectangle connecting hole is equipped with the nut clearing hole, the both sides part of supporter has just seted up the nut hole of stepping down to the position department of nut clearing hole.

Further, the both ends of supporting the straight section are connected with the straight section of conflict through little connection segmental arc respectively, the straight section perpendicular to of conflict supports the straight section, and just two the straight sections of conflict are the inboard of attached back part and front part respectively, the other end of the straight section of conflict is connected with the U-shaped linkage segment of corresponding side through little connection segmental arc, both sides the U-shaped linkage segment is by the inboard indent of dorsal part to the side direction supporter in opposite directions. Through two conflict straight sections back part and front portion of contradicting respectively, change the point contact of conflict arc section and back part and front portion for the face contact, can further increase the contact point of downside part and back part, front portion to can further promote the intensity and the compressive capacity of shaped steel main part.

Furthermore, regular hexagon fixing holes are formed in the middle of the back portion at equal intervals along the length direction of the back portion, and auxiliary mounting holes which are in one-to-one correspondence with the fixing holes and are aligned with the fixing holes are formed in the middle of the front portion at equal intervals along the length direction of the front portion. The fixing holes can facilitate the fixing of the section steel main body, and the auxiliary mounting holes can facilitate the installation of bolts or self-tapping screws in the fixing holes because the section steel main body is of a closed structure; when the bolt is installed, because the outer contour phase-match of fixed orifices and nut, with the part precession fixed orifices of nut, the fixed orifices can just block the nut to can prevent the unexpected rotation and the removal of nut, and then be favorable to preventing that the bolt pine takes off or offset.

Furthermore, the plate material of the section steel main body is a galvanized plate or an aluminum-coated zinc plate, the thickness of the plate material is 1.5mm, and the section steel main body is formed by a steel plate rolling mill line. The thickness of the section is reduced from the original 2.0mm and 2.5mm to 1.5mm, the strength and the stability of the section are improved, the factory benefit can be improved, and the product cost can be reduced; the processing method of steel plate rolling mill line forming replaces the original MF section bar welding, polishing, acid washing, phosphating, spraying and other processes, improves the processing efficiency, reduces the product cost, provides the product competitiveness, is beneficial to environmental protection, simultaneously ensures the consistency of the product to the maximum extent, and ensures the cabinet body strength after the switch cabinet is assembled.

As an embodiment of the above solution, the first closing edge and the second closing edge are provided on the front portion, and the closing structure is: the first closed edge is in lap joint with the second closed edge, the first closed edge is positioned on the inner side of the second closed edge, the side where the first closed edge is positioned is concave inwards to form a U-shaped portion, the second closed edge forms a hem portion which is just inserted into the inner side of the U-shaped portion, the two side portions of the U-shaped portion and the hem portion of the second closed edge are perpendicular to the front face of the section steel main body, and the U-shaped portion is positioned on the inner side of the section steel main body. When acting force acts in the steel section, the U-shaped part and the folded edge part of the second closed edge are mutually abutted, so that the acting force can be resisted; when acting force acts outside the steel section, the two side parts of the U-shaped part and the folded edge part of the second closed edge are hooked mutually, so that the effect of preventing separation between the first closed edge and the second closed edge is achieved, and the acting force can be resisted.

In another embodiment of the above aspect, the first closed side and the second closed side are provided on the front surface portion, the closed structure includes a first hook portion formed on the side of the first closed side and a second hook portion formed on the side of the second closed side, both side portions of the first hook portion and the second hook portion are parallel to the front surface of the section steel main body, the first hook portion and the second hook portion are disposed opposite to each other and penetrate each other, the first hook portion is located on the inner side of the section steel main body, the connecting end of the first hook portion is formed with a folded edge portion perpendicular to the front surface of the section steel main body, and the middle portion of the second hook portion abuts against the folded edge portion. When acting force is exerted into the steel section, the first hook-shaped part and the folded edge part are mutually abutted with the second hook-shaped part, and the acting force can be resisted; when the acting force acts outside the steel section, the first hook-shaped part and the second hook-shaped part are hooked with each other, so that the effect of preventing separation between the first closed edge and the second closed edge is achieved, and the acting force can be resisted.

In another embodiment of the above solution, the first closed edge and the second closed edge are disposed at the connection between the upper side portion and the back portion, the closed structure includes a first hook connected to the upper side portion and a second hook connected to the back portion, the first hook and the second hook are engaged with each other, and an included angle between the free end sides of the first hook and the second hook and a vertical surface is 0-40 °. The fixed end sides of the first hook body and the second hook body can prevent the reverse movement and deformation of the free end of the other hook body, thereby ensuring that the closed structure can play a closing role.

Specifically, the included angle between the free end sides of the first hook body and the second hook body and the vertical plane is 40 °.

Specifically, the included angle between the free end sides of the first hook body 21 and the second hook and the vertical surface is 0 degree, and the first hook body and the second hook body are both in a U shape. Design like this makes four vertical limits of first coupler body and second coupler body laminate in proper order, then the free distolateral all by complete centre gripping of first coupler body and second coupler body for first coupler body and second coupler body are difficult for taking place to warp, thereby can ensure the effective effect of enclosed construction, and then can ensure the intensity of shaped steel main part.

3. Advantageous effects

(1) The utility model discloses a cross-section is the rectangle structure, and one side of shaped steel main part is followed its length direction disconnection and is formed first closed limit and second closed limit, and seals the closed connection of closed structure through mutual interlock between the limit just first closed limit and the second. When the acting force acts in the steel section, the mutually meshed closed structures mutually abut against each other to resist the acting force, and because the combined structure is used in a switch cabinet, the beam and the side beam are arranged on the inner side, and the force towards the inner side is mutually counteracted front and back; when the acting force acts outside the steel section, the mutually meshed closed structures are hooked mutually, so that the effect of preventing separation between the first closed edge and the second closed edge is achieved, and the acting force can be resisted. Therefore, the steel section is of a closed square structure, the stretch resistance and the anti-twisting capacity are greatly improved, the rigidity is high, the strength is high, and the assembled switch cabinet body is high in strength and high in dynamic stability. Then the utility model provides a C section bar equipment back rigidity, intensity all relatively poor drawback.

(2) The middle part of the lower side surface part of the profile steel main body of the utility model protrudes towards the inner side of the profile steel main body to form a support body, so that the contact points of the lower side surface part with the back part and the front part can be increased, when acting force is exerted into the steel profile, the support component on the lower side surface part is stably supported between the back part and the front part, is not easy to deform and can resist the acting force; when the acting force acts outside the steel section, the two ends of the lower side part are provided with three layers of structures, so that the steel section is not easy to deform, has higher strength and can resist the acting force. Then the utility model discloses can further promote the intensity and the compressive capacity of shaped steel main part.

(3) The utility model discloses an inboard grafting of supporter has the plugboard, the middle part of plugboard and the partial parallel and level of both sides of downside part, and one row of side connecting hole has been seted up along its length direction equidistant in the middle part of plugboard, and the locating hole has all been seted up to the both ends of the both sides part of plugboard and supporter through. During the equipment, can take the plugboard out from the one end side of shaped steel main part, then through will treating another shaped steel main part of connecting be connected with the plugboard through the side connecting hole, then insert corresponding shaped steel main part with this plugboard and pass the locating hole locking with the bolt can, can take out the back at the plugboard, other shaped steel main parts one-to-one that will be connected with this shaped steel main part are on this plugboard, it can with the bolt pass the locking in the corresponding shaped steel main part again with the fishplate bar at last, its convenient operation, be convenient for connect other shaped steel main parts on the side of shaped steel main part.

(4) The utility model discloses a circular connecting hole of seting up on the front is tensile hole, and one side intercommunication formula of the rectangle connecting hole of seting up is equipped with the nut clearing hole. During assembly, the circular connecting holes can facilitate the connection between the section steel main bodies through the self-tapping screws, and can ensure the contact surface of the self-tapping screws and the section steel to the maximum extent so as to ensure the strength stability of the cabinet body; and the rectangle connecting hole can not pass through self tapping screw connection, it is fit for through bolted connection, insert the nut end that is used for locking the bolt of two shaped steel main parts through the nut clearing hole and make this bolt move to the rectangle connecting hole in, then with the connecting hole suit in the short shaped steel main part on aforementioned bolt, and stretch into the inboard of this shaped steel main part from this distolateral and tighten the nut on this bolt, accomplish the connection to a junction in the short shaped steel main part promptly, and the operation is convenient, be convenient for connect other shaped steel main parts on the front of shaped steel main part.

(5) The utility model provides a steel section bar is by steel sheet rolling mill line shaping, replaces processes such as original MF section bar welding, polishing, pickling, bonderizing, spraying, promotes machining efficiency, reduces product cost, provides product competitiveness, is favorable to environmental protection, has guaranteed the uniformity of product simultaneously to the at utmost, assembles into the cubical switchboard after, no matter be cabinet body intensity, still piece together the roughness of the cabinet body behind the cabinet, has all obtained the guarantee, then the utility model provides a MF section bar preparation technology is complicated, and be unfavorable for the drawback of environmental protection.

(6) The utility model discloses a panel thickness can be reduced to 1.5mm by original 2.0mm, 2.5mm, and intensity, stability increase to some extent, can promote the mill's benefit, reduces product cost, economical and practical.

To sum up, the utility model discloses the rigidity is big, and intensity is high, and the equipment is convenient, and processing is convenient, economical and practical, and is energy-concerving and environment-protective.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention in example 1;

fig. 2 is a front view of the structure of the present invention in example 1;

fig. 3 is a schematic cross-sectional structure of the present invention in example 2;

fig. 4 is a schematic cross-sectional structure of the present invention in example 3;

fig. 5 is a schematic cross-sectional structure of the present invention in example 4;

fig. 6 is a front view of the structure of the present invention in embodiment 4;

fig. 7 is a schematic cross-sectional structure of the present invention in example 5.

Reference numerals: 1. a section steel main body; 11. a back portion; 12. an upper side portion; 13. a front portion; 14. a lower side portion; 2. a fixing hole; 3. the nut passes through the hole; 4. a circular connection hole; 5. a first closed edge; 6. a U-shaped portion; 7. a second closed edge; 8. an auxiliary mounting hole; 9. a support body; 91. supporting the straight section; 92. a contact arc section; 93. a U-shaped connecting section; 94. A flat straight section is abutted; 95. connecting the arc sections; 10. inserting grooves; 15. inserting edges; 16. a side connection hole; 17. a plugboard; 18. positioning holes; 19. a first hook-shaped portion; 20. a second hook-shaped portion; 21. a first hook body; 22. a first hook body; 30. a rectangular connecting hole; 31. the nut is provided with a hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

As shown in fig. 1, the high-strength steel section bar which is convenient to assemble and is suitable for a frame of a switch cabinet body comprises a steel section main body 1, wherein the section of the steel section main body 1 is of a rectangular structure, one side of the steel section main body 1 is broken along the length direction of the steel section main body and forms a first closed edge 5 and a second closed edge 7, and the first closed edge 5 and the second closed edge 7 are in closed connection through mutually meshed closed structures; the section steel main body 1 is divided into a back part 11, an upper side part 12, a front part 13 and a lower side part 14, the middle part of the lower side part 14 protrudes towards the inner side of the section steel main body 1 to form a support body 9, the support body 9 comprises a support straight section 91 perpendicular to the back part 11 and two abutting arc sections 92 connected to the two end sides of the support straight section 91, the two abutting arc sections 92 abut against the inner sides of the back part 11 and the front part 13 respectively, one end of each abutting arc section 92 is connected with the support straight section 91, and the other end of each abutting arc section 92 is connected with the corresponding end side of the lower side part 14 through a U-shaped connecting section 93;

an inserting groove 10 is formed in each of two sides of the supporting body 9, an inserting plate 17 is inserted into the inner side of the supporting body 9, the middle of the inserting plate 17 is flush with two sides of the lower side surface portion 14, inserting edges 15 matched with the corresponding side inserting grooves 10 are formed at two ends of the inserting plate 17, a row of side connecting holes 16 are formed in the middle of the inserting plate 17 at equal intervals along the length direction of the inserting plate 17, positioning holes 18 are formed in two end sides of each inserting edge 15 in a penetrating mode, and positioning holes 18 communicated with the positioning holes 18 in the corresponding side inserting edges 15 are formed in two side portions of the supporting body 9 in a penetrating mode; as shown in fig. 2, two rows of connecting holes extending along the length direction of the steel section main body 1 are symmetrically formed in the front surface of the steel section main body at two sides of the closed structure, and each row of connecting holes comprises round connecting holes 4 and rectangular connecting holes 30 which are alternately distributed at intervals; the circular connecting holes 4 are stretching holes, so that the connection between the section steel main bodies 1 can be conveniently carried out through self-tapping screws, and the contact surface between the self-tapping screws and the section steel can be ensured to the maximum extent so as to ensure the strength stability of the cabinet body; two rows of connecting holes the opposite sides intercommunication formula of rectangle connecting hole 30 is equipped with nut clearing hole 3, the both sides part of supporter 9 has just seted up nut abdicating hole 31 to the position department of nut clearing hole 3, can ensure that the nut end of bolt can insert and remove to in the rectangle connecting hole 30 from nut clearing hole 3.

In the present embodiment, as shown in fig. 1 and 2, fixing holes 2 in a regular hexagon shape are formed in the middle of the back portion 11 at equal intervals along the length direction thereof, and auxiliary mounting holes 8 aligned with the fixing holes 2 in a one-to-one correspondence are formed in the middle of the front portion 13 at equal intervals along the length direction thereof. The fixing holes 2 can facilitate the fixing of the section steel main body 1 per se, and because the section steel main body 1 is of a closed structure, bolts or self-tapping screws can be conveniently installed in the fixing holes through the auxiliary installation holes 8; when the bolt is installed, because the outer contour phase-match of fixed orifices 2 and nut, with the part precession fixed orifices 2 of nut in, fixed orifices 2 can just block the nut to can prevent the unexpected rotation and the removal of nut, and then be favorable to preventing that the bolt pine takes off or offset.

In this embodiment, the plate material of the steel section body 1 is galvanized, and the thickness of the plate material is 1.5mm, and the steel section body 1 is formed by a steel plate rolling line. The thickness of the section is reduced from the original 2.0mm and 2.5mm to 1.5mm, the strength and the stability of the section are improved, the factory benefit can be improved, and the product cost can be reduced; the processing method of steel plate rolling mill line forming replaces the original processes of 8MF section bar welding, polishing, acid pickling, phosphating, spraying and the like, improves the processing efficiency, reduces the product cost, provides the product competitiveness, is beneficial to environmental protection, simultaneously ensures the consistency of the product to the maximum extent, and ensures the cabinet body strength after the switch cabinet is assembled.

In this embodiment, as shown in fig. 1, the first closed edge 5 and the second closed edge 7 are disposed on the front portion 13, and the closed structure is: the first closed edge 5 is in lap joint with the second closed edge 7, the first closed edge 5 is located on the inner side of the second closed edge 7, the side where the first closed edge 5 is located is concave to form a U-shaped portion 6, the second closed edge 7 forms a folded edge portion which is just inserted into the inner side of the U-shaped portion 6, the two side portions of the U-shaped portion 6 and the folded edge portion of the second closed edge 7 are perpendicular to the front face of the section steel main body 1, and the U-shaped portion 14 is located on the inner side of the section steel main body 1. When acting force is applied to the steel section, the U-shaped part 6 and the folded edge part of the second closed edge 7 are mutually abutted, so that the acting force can be resisted; when the acting force acts outside the steel section, the two side parts of the U-shaped part 6 and the folded edge part of the second closed edge 7 are hooked with each other, so that the effect of preventing separation between the first closed edge 5 and the second closed edge 7 is achieved, and the acting force can be resisted.

Example 2

The present embodiment is different from embodiment 1 in that:

in this embodiment, as shown in fig. 3, two ends of the supporting straight section 91 are respectively connected with an abutting straight section 94 through a small connecting arc section 95, the abutting straight section 94 is perpendicular to the supporting straight section 91, and two abutting straight sections 94 are respectively attached to the inner sides of the back portion 11 and the front portion 13, the other end of the abutting straight section 94 is connected with a U-shaped connecting section 93 of the corresponding side through the small connecting arc section 95, and the U-shaped connecting sections 93 on two sides are inwards recessed from the opposite side to the opposite side of the supporting body 9. By the two abutting straight sections 94 abutting against the back portion 11 and the front portion 13, respectively, and changing the point contact of the abutting arc section 92 with the back portion 11 and the front portion 13 to surface contact, the contact points of the lower side surface portion 14 with the back portion 11 and the front portion 13 can be further increased, thereby further improving the strength and the pressure resistance of the section steel main body 1.

In this embodiment, the plate material of the steel body 1 is an aluminum-coated zinc plate.

Otherwise, the same procedure as in example 1 was repeated.

Example 3

The present embodiment is different from embodiment 1 in that:

in the present embodiment, as shown in fig. 4, the first closed side 5 and the second closed side 7 are provided on the front face portion 13, the closed structure includes a first hook portion 19 formed on the side where the first closed side 5 is located and a second hook portion 20 formed on the side where the second closed side 7 is located, both side portions of the first hook portion 19 and the second hook portion 20 are parallel to the front face of the section steel body 1, and the first hook portion 19 and the second hook portion 20 are disposed facing each other and are interposed with each other, the first hook portion 19 is located on the inner side of the section steel body 1, and the connecting end of the first hook portion 19 is formed with a folded portion perpendicular to the front face of the section steel body 1, and the middle portion of the second hook portion 20 abuts against the folded portion. When a force is applied into the steel section, the first hook-shaped part 19 and the folded part are abutted against the second hook-shaped part 20, and the force can be resisted; when the force is applied to the outside of the steel section, the first hook-shaped part 19 and the second hook-shaped part 20 are hooked with each other, so that the separation between the first closed edge 5 and the second closed edge 7 is prevented, and the force can be resisted.

Otherwise, the same procedure as in example 1 was repeated.

Example 4

The present embodiment is different from embodiment 1 in that:

in the present embodiment, as shown in fig. 5, the first closed side 5 and the second closed side 7 are provided at the connection between the upper side portion 12 and the back portion 11, the closed structure includes a first hook 21 connected with the upper side portion 12 and a second hook 22 connected with the back portion 11, and the first hook 21 and the second hook 22 are engaged with each other, and the included angle between the free end sides of the first hook 21 and the second hook 22 and the vertical plane is 40 °. The fixed end sides of the first hook 21 and the second hook 22 can prevent the reverse movement deformation of the free end of the other hook, thereby ensuring the closing structure to perform the closing function.

In the present embodiment, as shown in fig. 6, two rows of connecting holes extending along the length direction of the steel section main body 1 are symmetrically formed on the front surface of the steel section main body 1, and each row of connecting holes includes circular connecting holes 4 and rectangular connecting holes 30 alternately distributed at intervals.

Otherwise, the same procedure as in example 1 was repeated.

Example 5

This embodiment is different from embodiment 4 in that:

in the present embodiment, as shown in fig. 7, the included angle between the free end sides of the first hook body 21 and the second hook body 22 and the vertical plane is 0 °, and the first hook body 21 and the second hook body 22 are both in a "U" shape. Design like this makes four vertical limits of first coupler 21 and second coupler 22 laminate in proper order, then the free distolateral all by complete centre gripping of first coupler 21 and second coupler 22 for first coupler 21 and second coupler 22 are difficult for taking place to warp, thereby can ensure the effective function of enclosed construction, and then can ensure shaped steel main part 1's intensity.

In this embodiment, as shown in fig. 7, two ends of the supporting straight section 91 are respectively connected with an abutting straight section 94 through a small connecting arc section 95, the abutting straight section 94 is perpendicular to the supporting straight section 91, and two abutting straight sections 94 are respectively attached to the inner sides of the back portion 11 and the front portion 13, the other end of the abutting straight section 94 is connected with a U-shaped connecting section 93 of the corresponding side through the small connecting arc section 95, and the U-shaped connecting sections 93 on two sides are inwards recessed from the opposite side to the opposite side of the supporting body 9. By the two abutting straight sections 94 abutting against the back portion 11 and the front portion 13, respectively, and changing the point contact of the abutting arc section 92 with the back portion 11 and the front portion 13 to surface contact, the contact points of the lower side surface portion 14 with the back portion 11 and the front portion 13 can be further increased, thereby further improving the strength and the pressure resistance of the section steel main body 1.

The rest is the same as example 4.

The specific action principle of the convenient high-strength steel section bar suitable for the switch cabinet body frame of the assembly is as follows:

during the equipment, confirm earlier four longer shaped steel main parts of length 1 as the pole setting support of four corners of cubical switchboard, then connect many shorter shaped steel main parts 1 between every two adjacent longer shaped steel main parts 1:

if the end part of the short section steel main body 1 is connected to the front side of the long section steel main body 1, the round connecting hole 4 is a stretching hole for the connecting hole on the front side, so that the connection between the section steel main bodies 1 can be conveniently carried out through the self-tapping screw, and the contact surface of the self-tapping screw and the section bar can be ensured to the maximum extent so as to ensure the strength stability of the cabinet body; however, the rectangular attachment holes 30 cannot be attached by self-tapping screws and are suitable for attachment by bolts because the section steel body 1 has a closed structure, and it is difficult to insert bolts into the rectangular attachment holes 30 from the inside of the section steel body 1 or to tighten nuts on bolts passing through the rectangular attachment holes 30 on the inside of the section steel body 1 in the direction of the bolts passing through the rectangular attachment holes 30 because the section steel body 1 has a closed structure. When the connection is needed through the rectangular connecting hole 30, the nut end of the bolt for locking the two section steel main bodies 1 is inserted into the nut through hole 3 through the nut through hole 3 and moves the bolt into the rectangular connecting hole 30, then the connecting hole on the short section steel main body 1 is sleeved on the bolt, and extends into the inner side of the section steel main body 1 from the end side to screw the nut on the bolt, namely the connection of one connecting part on the short section steel main body 1 is completed; the short steel sections 1 are assembled by connecting both end sides of the short steel sections 1 to the two long steel sections 1, respectively.

If the end of the short section steel body 1 is connected to the side of the long section steel body 1, the plugboard 17 in the long section steel body 1 can be drawn out from one end side in advance, then the short section steel body 1 is connected through the side connecting hole 16, the short section steel bodies 1 to be connected to the long section steel body 1 are all connected to the corresponding plugboard 17, the two end sides of the short section steel body 1 are respectively connected to the plugboards 17 of the two long section steel bodies 1, then the plugboards 17 are respectively inserted into the corresponding section steel bodies 1, and the plugboards 17 and the corresponding section steel bodies 1 are locked by bolts penetrating through the positioning holes 18, namely, the assembly of the short section steel bodies 1 between the two long section steel bodies 1 is realized. And after the assembly of the various steel main bodies 1 is finished, the assembly of the switch cabinet frame (or the framework) is finished.

When the force acts in the steel section, the corresponding parts belonging to the closed structure between the first closed edge 5 and the second closed edge 7 are mutually abutted to resist the acting force, and the supporting body 9 on the lower side surface part 14 is stably supported between the back surface part 11 and the front surface part 13, is not easy to deform and can resist the acting force; when acting outside the steel section, the corresponding parts belonging to the closed structure between the first closed edge 5 and the second closed edge 7 are hooked with each other, so that the separation prevention effect between the first closed edge 5 and the second closed edge 7 is achieved, the acting force can be resisted, and the two ends of the lower side surface part 14 are provided with a multilayer structure, are not easy to deform, have higher strength and can resist the acting force. Therefore, the steel section is of a closed square structure, the stretch resistance and the anti-twisting capacity are greatly improved, the rigidity is high, the strength is high, and the assembled switch cabinet body is high in strength and high in dynamic stability.

From the above, the utility model discloses rigidity is big, and intensity is high, and processing is convenient, and the equipment is convenient, economical and practical, energy-concerving and environment-protective.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The high-strength steel section bar convenient to assemble and suitable for the frame of the switch cabinet body comprises a section steel main body (1), wherein two rows of connecting holes extending along the length direction of the section steel main body (1) are symmetrically formed in the front face of the section steel main body (1), each row of connecting holes comprises round connecting holes (4) and rectangular connecting holes (30) which are alternately distributed at intervals, the section of the section steel main body (1) is of a rectangular structure, one side of the section steel main body (1) is disconnected along the length direction of the section steel main body and forms a first closed edge (5) and a second closed edge (7), and the first closed edge (5) and the second closed edge (7) are connected in a closed manner through mutually meshed closed structures; the profile steel main body (1) is divided into a back part (11), an upper side part (12), a front part (13) and a lower side part (14), the middle part of the lower side part (14) protrudes towards the inner side of the profile steel main body (1) to form a support body (9), the support body (9) comprises a support straight section (91) perpendicular to the back part (11) and two abutting arc sections (92) connected to the two end sides of the support straight section (91), the two abutting arc sections (92) abut against the inner sides of the back part (11) and the front part (13) respectively, one end of each abutting arc section (92) is connected with the support straight section (91), and the other end of each abutting arc section is connected with the corresponding end side of the lower side part (14) through a U-shaped connecting section (93);

an inserting groove (10) is formed in each of two sides of the supporting body (9), an inserting plate (17) is inserted into the inner side of the supporting body (9), the middle of the inserting plate (17) is flush with two side portions of the lower side surface portion (14), inserting edges (15) matched with the corresponding side inserting grooves (10) are formed at two ends of the inserting plate (17), a row of side connecting holes (16) are formed in the middle of the inserting plate (17) at equal intervals along the length direction of the inserting plate, positioning holes (18) are formed in two end sides of each inserting edge (15) in a penetrating mode, and positioning holes (18) communicated with the positioning holes (18) in the corresponding side inserting edges (15) are formed in two side portions of the supporting body (9) in a penetrating mode; circular connecting hole (4) are tensile hole, two rows of connecting holes the back of the body side intercommunication formula of rectangle connecting hole (30) is equipped with nut clearing hole (3), the both sides part of supporter (9) just has seted up nut hole (31) of stepping down to the position department of nut clearing hole (3).

2. The high-strength steel profile convenient to assemble and suitable for a frame of a switch cabinet body as claimed in claim 1, wherein two ends of the supporting straight section (91) are respectively connected with an abutting straight section (94) through small connecting arc sections (95), the abutting straight section (94) is perpendicular to the supporting straight section (91), the two abutting straight sections (94) are respectively attached to the inner sides of the back portion (11) and the front portion (13), the other ends of the abutting straight sections (94) are connected with U-shaped connecting sections (93) on corresponding sides through the small connecting arc sections (95), and the U-shaped connecting sections (93) on two sides are inwards concave from opposite sides to opposite sides of the supporting body (9).

3. The high-strength steel section bar convenient to assemble and suitable for the frame of the switch cabinet body as claimed in claim 1 or 2, wherein fixing holes (2) in a regular hexagon shape are formed in the middle of the back portion (11) at equal intervals along the length direction of the back portion, and auxiliary mounting holes (8) which are in one-to-one correspondence with and aligned with the fixing holes (2) are formed in the middle of the front portion (13) at equal intervals along the length direction of the front portion.

4. The high-strength steel section bar convenient to assemble and suitable for the frame of the switch cabinet body is characterized in that the steel section bar main body (1) is made of galvanized plates or aluminum-coated zinc plates, and the thickness of the steel section bar main body (1) is 1.5 mm.

5. The high-strength steel profile for a switchgear body frame, which is convenient to assemble, according to claim 4, wherein the first closed edge (5) and the second closed edge (7) are disposed on the front portion (13), and the closed structure is as follows: first confined edge (5) and second confined edge (7) overlap joint, first confined edge (5) are located second confined edge (7) inboardly, and first confined edge (5) place side indent forms U-shaped portion (6), second confined edge (7) form and just insert the inboard hem part of U-shaped portion (6), the both sides part of U-shaped portion (6) and the hem part of second confined edge (7) all are perpendicular to the front of shaped steel main part (1), and U-shaped portion (6) are located the inboard of shaped steel main part (1).

6. The high-strength steel section bar which is convenient to assemble and is suitable for the frame of the switch cabinet body as claimed in claim 4, characterized in that the first closed edge (5) and the second closed edge (7) are arranged on the front part (13), the closure structure comprises a first hook-shaped portion (19) formed on the side of the first closure edge (5) and a second hook-shaped portion (20) formed on the side of the second closure edge (7), both side portions of the first hook-shaped portion (19) and the second hook-shaped portion (20) are parallel to the front surface of the section steel main body (1), and the first hook-shaped part (19) and the second hook-shaped part (20) are arranged oppositely and mutually interpenetrated, the first hook-shaped part (19) is positioned at the inner side of the section steel main body (1), and the connecting end of the first hook-shaped part (19) is formed with a folded part which is perpendicular to the front surface of the section steel main body (1), and the middle part of the second hook-shaped part (20) is abutted against the folded part.

7. The easy-to-assemble high-strength steel profile suitable for the frame of the switch cabinet body according to claim 4, wherein the first closed edge (5) and the second closed edge (7) are arranged at the joint between the upper side portion (12) and the back portion (11), the closed structure comprises a first hook body (21) connected with the upper side portion (12) and a second hook body (22) connected with the back portion (11), the first hook body (21) and the second hook body (22) are mutually meshed, and the included angle between the free end sides of the first hook body (21) and the second hook body (22) and the vertical surface is 0-40 degrees.

8. Easy to assemble high-strength steel profile suitable for a switchgear body frame according to claim 7, wherein the angle between the free end sides of the first hook (21) and the second hook (22) and the vertical plane is 40 °.

9. The easy-to-assemble high-strength steel profile suitable for the frame of the switch cabinet body according to claim 7, wherein the included angle between the free end sides of the first hook body (21) and the second hook body (22) and the vertical plane is 0 degree, and the first hook body (21) and the second hook body (22) are both in a U shape.