A switch cabinet with safety interlock protection device

Abstract

The invention discloses a switch cabinet with a safety interlocking protection device, comprising a switch cabinet box body and a pedal frame, the pedal frame is fixedly connected to the switch cabinet base on one side, a rotating mechanism is installed on the pedal frame, a telescopic locking mechanism is installed on the movable end of the rotating mechanism, a plurality of groups of elastic telescopic mechanisms are installed at the bottom of the rotating mechanism, sliding extrusion steering mechanisms are symmetrically installed on both sides of the movable end of the rotating mechanism, the sliding extrusion steering mechanism is inserted into a vertical guide rail groove vertically arranged on the switch cabinet door installation rotating shaft and facing outward, an arc-shaped extrusion guide rail groove with a top view of 90 degrees and connected to the bottom of the vertical guide rail groove and used for extruding and driving the cabinet door to rotate is arranged on the circumferential surface of the switch cabinet door installation rotating shaft, the arc-shaped extrusion guide rail groove for extruding and driving the cabinet door to rotate is connected to the bottom of the vertical guide rail groove and is used for extruding and driving the cabinet door to rotate, the cabinet door is automatically locked when the maintenance is interrupted or completed by the above mechanism, the safety interlocking performance of the switch cabinet is improved, and casualties and equipment damage caused by foreign objects entering the cabinet door by mistake due to failure to close the cabinet door in time are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of switch cabinets, and in particular to a switch cabinet with a safety interlocking protection device. Background Art

[0002] The switch cabinet is an electrical equipment. The external line of the switch cabinet first enters the main control switch inside the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. Such as instruments, automatic control, motor magnetic switches, various AC contactors, etc. Some also have high-voltage and low-voltage room switch cabinets, with high-voltage busbars, such as power plants, etc. Some also have low-frequency load shedding to protect the main equipment.

[0003] The main function of the switchgear is to open and close, control and protect electrical equipment in the process of power generation, transmission, distribution and power conversion in the power system. The components in the switchgear mainly include circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various protective devices. There are many ways to classify switchgear. For example, according to the installation method of the circuit breaker, it can be divided into removable switchgear and fixed switchgear; or according to the different cabinet structures, it can be divided into open switchgear, metal-enclosed switchgear, and metal-enclosed armored switchgear; according to the different voltage levels, it can be divided into high-voltage switchgear, medium-voltage switchgear and low-voltage switchgear. It is mainly suitable for various occasions such as power plants, substations, petrochemicals, metallurgical steel rolling, light industry and textiles, factories and mines, residential areas, high-rise buildings, etc.

[0004] Switch cabinets must be regularly maintained during use, but existing switch cabinets have the following problems during the maintenance process: 1. During the maintenance process, the open switch cabinet door rotates unexpectedly, affecting the maintenance work of personnel and increasing safety hazards; 2. During the maintenance break or after the end, personnel fail to close the switch cabinet door in time, resulting in irrelevant personnel mistakenly entering or snakes, rats and other animals entering, causing casualties or equipment damage.

[0005] Based on the above problems, the present invention proposes a switch cabinet with a safety interlocking protection device. Summary of the invention

[0006] In view of the problems in the above technical background, the purpose of the present invention is to provide a switch cabinet with a safety interlock protection device, which solves the problems in the background technology that the cabinet door of the existing switch cabinet accidentally rotates during the maintenance process, affecting the maintenance work, and the personnel fail to close the switch cabinet door in time after the maintenance break or completion, resulting in irrelevant personnel accidentally entering or snakes, rats and other animals entering, causing casualties or equipment damage.

[0007] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0008] A switch cabinet with a safety interlock protection device comprises a switch cabinet body and a pedal frame installed at the front end of the switch cabinet body, the pedal frame being fixedly connected to the switch cabinet base installed at the bottom of the door opening side of the switch cabinet body, a rotating mechanism is installed on the pedal frame, a telescopic locking mechanism is installed on the movable end of the rotating mechanism, and a telescopic locking mechanism is inserted into a front groove of the base provided on the switch cabinet base, and multiple groups of elastic telescopic mechanisms are installed on the pedal frame located at the bottom of the rotating mechanism. At the same time, sliding extrusion steering mechanisms are symmetrically installed on both sides of the movable end of the rotating mechanism, and switch cabinet door installation rotating shafts are fixedly installed on both sides of the front groove of the base, and the sliding extrusion steering mechanism is inserted into a vertical guide groove vertically provided on the switch cabinet door installation rotating shaft and facing outward, and an arc-shaped extrusion guide groove with a circumferential angle of 90 degrees in a top view and connected to the bottom of the vertical guide groove is provided on the circumferential surface of the switch cabinet door installation rotating shaft, which is used for extruding and driving the cabinet door to rotate.

[0009] Furthermore, the rotating mechanism includes a movable pedal and a fixed rotating shaft.

[0010] Furthermore, the movable pedal is installed in a pedal body inner groove provided in the pedal body frame, and the pedal body frame is in the shape of a right-angled trapezoidal column, and the pedal body inner groove is also in the shape of a right-angled trapezoidal column. One end of the movable pedal is fixedly installed on the fixed rotating shaft, and the fixed rotating shaft is installed on the pedal body frame at one side end of the pedal body inner groove with a lower height. At the same time, a slope block for facilitating the entry of personnel and equipment is installed on the pedal body frame located outside the fixed rotating shaft, and the pedal body frame located at the bottom of the movable pedal is symmetrically installed with multiple sets of elastic telescopic mechanisms.

[0011] Furthermore, the elastic telescopic mechanism includes a telescopic rod with multi-stage telescopic function, a compression spring and a top ball pressure-bearing body.

[0012] Furthermore, a plurality of groups of circular hole grooves opening upward are evenly provided on the pedal body frame below the movable end of the movable pedal, the telescopic rod with multi-stage telescopic function is installed in the circular hole groove, a top ball pressure-bearing body is installed on the top of the telescopic rod, the extrusion spring is installed on the telescopic rod below the top ball pressure-bearing body, and its bottom surface is in contact with the top ball pressure-bearing body when the movable pedal is unloaded, and the telescopic locking mechanism is installed on one side surface of the movable end of the movable pedal.

[0013] Furthermore, the telescopic locking mechanism includes a locking tooth fixing base plate and multiple groups of locking teeth, the locking tooth fixing base plate is fixedly mounted on one side of the movable end of the movable pedal, multiple groups of locking teeth are evenly mounted on the top surface of the locking tooth fixing base plate, and at the same time, a base locking tooth penetrating limiting groove corresponding to the multiple groups of locking teeth is provided on the switch cabinet base located at the top of the front groove of the base, an arc surface is provided on the outer side of the top of the locking tooth for convenient locking of the cabinet door, and at the same time, the inner side of the base locking tooth penetrating limiting groove is provided as an arc surface to prevent the locking teeth from getting stuck, a left switch cabinet door and a right switch cabinet door are installed on the switch cabinet box, and at the bottom of the left switch cabinet door and the right switch cabinet door The left switch cabinet door and the right switch cabinet door are respectively provided with an inner protrusion and an inner groove with an installation limit relationship having a chamfered arc surface, and the left switch cabinet door and the right switch cabinet door are respectively installed on symmetrical switch cabinet door installation rotating shafts, and the bottom of the switch cabinet door installation rotating shaft passes through the rotating shaft installation holes symmetrically provided on the switch cabinet base and is installed in the front groove of the base, and the sliding extrusion steering mechanism is inserted into the switch cabinet door installation rotating shaft.

[0014] Furthermore, the sliding extrusion steering mechanism comprises two groups of punch rods and multiple groups of symmetrically installed sliding wheels.

[0015] Furthermore, the two groups of the punch rods are symmetrically mounted on the inner side surface of the movable end of the movable pedal, and guide wheel grooves are symmetrically provided on both sides of the position where the punch rods are inserted into the vertical guide rail grooves, and sliding wheels are installed on the guide wheel grooves that are radially perpendicular to the two side surfaces of the vertical guide rail grooves, and a gap is provided between the outer end of the punch rods and the inner side surfaces of the vertical guide rail grooves to prevent the movable from getting stuck. At the same time, the vertical height of the vertical guide groove is greater than or equal to the height of the lock tooth inserted into the cabinet door lock tooth slot, and the bottom of the vertical guide groove is connected to the top of the arc-shaped extruded guide groove, and at the same time, the vertical guide groove is smoothly connected to the bottom surface and two side surfaces of the arc-shaped extruded guide groove.

[0016] Furthermore, the pedal frame is fixedly connected to both sides of a switch cabinet base installed at the bottom of the door opening side of the switch cabinet box body through symmetrically installed connecting plates, and an equipment mounting frame is provided in the switch cabinet box body.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] (1) In the present invention, a pedal frame is fixedly connected and installed in front of the switch cabinet base at the bottom of the switch cabinet box body, and a movable pedal fixed at the outer end is installed on the pedal frame. A telescopic locking mechanism and a sliding extrusion steering mechanism are installed at the movable end of the movable pedal. At the same time, multiple sets of elastic telescopic mechanisms are installed on the pedal frame below the movable pedal. When personnel need to perform maintenance operations, they first stand on the movable pedal to rotate the movable pedal downward, and the movable pedal drives the lock tooth fixing bottom plate to move downward. The lock tooth fixing bottom plate drives multiple sets of lock teeth to push out the cabinet door lock tooth slots located at the bottom of the left switch cabinet door and the right switch cabinet door. In this process, the vertical guide groove on the switch cabinet door installation rotation axis of the sliding extrusion steering mechanism is moved from top to bottom. Movement, after the personnel unlock the cabinet door, the movable pedal rotates further downward, and the two sets of punch rods included in the sliding extrusion steering mechanism enter the arc-shaped extrusion guide groove from the vertical guide groove, and at the same time, the multiple sets of sliding wheels on the punch rod squeeze the two sides of the arc-shaped extrusion guide groove to drive the switch cabinet door installation rotating shaft to rotate 90 degrees outward to realize automatic opening of the cabinet door. The personnel only need to stand on the movable pedal to perform maintenance work, and the switch cabinet door installation rotating shaft on both sides is squeezed and positioned by the multiple sets of sliding wheels on the punch rod, so that the cabinet door always remains in an open state, which increases the cabinet door opening and closing safety interlocking performance while ensuring the fixed open state of the cabinet door during maintenance work, avoids the influence of accidental rotation of the cabinet door on the maintenance work, and eliminates safety hazards.

[0019] (2) In the present invention, when the personnel walk down the movable pedal after a maintenance break or after the maintenance, the extrusion springs on the multiple sets of elastic telescopic mechanisms under the movable pedal will push the telescopic rods to extend and retract, and the top ball pressure-bearing body on the top will push the movable pedal to rotate upward. In this process, the two sets of punch rods at the movable end of the movable pedal move upward at the same time, and the multiple sets of sliding wheels on the punch rods drive the switch cabinet door installation rotating shaft to rotate 90 degrees inward by squeezing the two side surfaces of the arc-shaped extrusion guide groove to close the cabinet door. In this process, the lock tooth fixing bottom plate at the outer end of the movable pedal is also reset at the same time. When the cabinet door rotates 90 degrees, After the cabinet door is closed at 0 degrees, the punch rod contained in the sliding extrusion steering mechanism completes the action and moves upward in the vertical guide groove. At the same time, when the cabinet door is closed, the lock teeth fixed bottom plate drives multiple sets of lock teeth from the base lock teeth to pass through the limit groove and enter the cabinet door lock tooth slot to lock the cabinet door. Through the above structure, when the personnel walk down the movable pedal during the maintenance break or after the maintenance, the switch cabinet door is automatically reset and locked, avoiding casualties and equipment damage caused by irrelevant personnel accidentally entering and some small animals such as snakes and rats entering due to personnel forgetting to close the cabinet door in time, greatly improving the safety interlocking function of the switch cabinet and eliminating potential risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A stereogram provided for an embodiment of the present invention;

[0021] Figure 2A three-dimensional diagram of a switch cabinet with the top of the cabinet removed provided by an embodiment of the present invention;

[0022] Figure 3 A three-dimensional diagram of a cabinet door with the left switch cabinet door and the right switch cabinet door removed provided by an embodiment of the present invention;

[0023] Figure 4 A three-dimensional diagram of a left switch cabinet door and a right switch cabinet door provided in an embodiment of the present invention;

[0024] Figure 5 A three-dimensional diagram of a pedal frame provided by an embodiment of the present invention;

[0025] Figure 6 A three-dimensional diagram of a switch cabinet base and a half-cut pedal frame provided in an embodiment of the present invention;

[0026] Figure 7 A partially cutaway stereogram provided for an embodiment of the present invention;

[0027] Figure 8 A three-dimensional diagram of the installation of a sliding extrusion steering mechanism provided in an embodiment of the present invention;

[0028] Fig. 9 A three-dimensional diagram of a sliding extrusion steering mechanism provided in an embodiment of the present invention.

[0029] In the figure: 1. switch cabinet body; 2. switch cabinet base; 3. pedal frame; 4. slope block; 5. pedal body inner groove; 6. round hole groove; 7. telescopic rod; 8. extrusion spring; 9. movable pedal; 901. fixed shaft; 10. lock tooth fixed bottom plate; 11. lock tooth; 12. punch rod; 13. guide wheel groove; 14. sliding wheel; 15. top ball pressure bearing body; 16. connecting plate; 17. left switch cabinet door; 18. right switch cabinet door; 19. inner protrusion; 20. inner groove; 21. switch cabinet door installation rotation shaft; 22. vertical guide groove; 23. arc extrusion guide groove; 24. cabinet door lock tooth slot; 25. front groove of base; 26. base lock tooth passes through the limit groove; 27. rotation shaft mounting hole; 28. equipment mounting frame. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0031] like Figure 1-9As shown, a switch cabinet with a safety interlock protection device comprises a switch cabinet box 1 and a pedal frame 3 installed at the front end of the switch cabinet box 1, the pedal frame 3 is fixedly connected to the switch cabinet base 2 installed at the bottom of the door opening side of the switch cabinet box 1, a rotating mechanism is installed on the pedal frame 3, a telescopic locking mechanism inserted into the base front groove 25 provided on the switch cabinet base 2 is installed on the movable end of the rotating mechanism, a plurality of sets of elastic telescopic mechanisms are installed on the pedal frame 3 at the bottom of the rotating mechanism, and sliding extrusion steering mechanisms are symmetrically installed on both sides of the movable end of the rotating mechanism. The switch cabinet door installation rotating shaft 21 is fixedly installed on both sides inside, and the sliding extrusion steering mechanism is inserted into the vertical guide rail groove 22 which is vertically arranged on the switch cabinet door installation rotating shaft 21 and is facing outward. The circumferential surface of the switch cabinet door installation rotating shaft 21 is provided with an arc-shaped extrusion guide rail groove 23 which is connected to the bottom of the vertical guide rail groove 22 and is used to extrusion and drive the cabinet door to rotate. The top view angle is 90 degrees. Generally, the cabinet door opening angle is 90 degrees, and 90 degrees is only one opening method. For example, if a 120-degree opening angle is required, the groove rail of the arc-shaped extrusion guide rail groove 23 needs to be adjusted so that the top view angle is 120 degrees.

[0032] Principle of automatic unlocking and anti-door rotation:

[0033] A pedal frame 3 is fixedly connected and installed in front of the switch cabinet base 2 at the bottom of the switch cabinet box body 1, and a movable pedal 9 fixed at the outer end is installed on the pedal frame 3. A telescopic locking mechanism and a sliding extrusion steering mechanism are installed at the movable end of the movable pedal 9. At the same time, multiple groups of elastic telescopic mechanisms are installed on the pedal frame 3 below the movable pedal 9. When personnel need to perform maintenance operations, they first stand on the movable pedal to rotate the movable pedal 9 downward, and the movable pedal 9 drives the lock tooth fixed bottom plate 10 to move downward. The lock tooth fixed bottom plate 10 drives multiple groups of lock teeth 11 to pull out the cabinet door lock tooth slots 24 located at the bottom of the left switch cabinet door 17 and the right switch cabinet door 18. In this process, the sliding extrusion steering mechanism moves from top to bottom in the vertical guide groove 22 on the switch cabinet door installation rotation shaft 21. The cabinet door is automatically opened by the operator, and the personnel only need to stand on the movable pedal 9 to perform maintenance work. The switch cabinet door installation rotating shafts on both sides are squeezed and positioned by the multiple sets of sliding wheels 14 on the punch rod 12, so that the cabinet door is always kept in an open state. The cabinet door opening and closing safety interlocking performance is increased while ensuring the fixed open state of the cabinet door during maintenance work, thereby avoiding the influence of accidental rotation of the cabinet door on the maintenance work and eliminating safety hazards.

[0034] Principle of automatic swing and locking cabinet door:

[0035] When the movable pedal is stepped down, the extrusion springs 8 on the multiple sets of elastic telescopic mechanisms under the movable pedal 9 will push the telescopic rod 7 to extend and retract, and the top ball pressure-bearing body 15 on the top will push the movable pedal 9 to rotate upward. In this process, the two sets of punch rods 12 at the movable end of the movable pedal 9 move upward at the same time, and the multiple sets of sliding wheels 14 on the punch rods 12 drive the switch cabinet door mounting rotating shaft 21 to rotate 90 degrees inward by squeezing the two sides of the arc-shaped extrusion guide groove 23 to close the cabinet door. In this process, the lock tooth fixing bottom plate 10 at the outer end of the movable pedal 9 is also reset at the same time. When the cabinet door rotates 90 degrees to close, the sliding wheel 14 on the punch rod 12 drives the switch cabinet door mounting rotating shaft 21 to rotate 90 degrees inward to close the cabinet door. After the punch rod 12 included in the dynamic extrusion steering mechanism completes the action, it moves upward in the vertical guide groove 22. At the same time, when the cabinet door is closed, the lock tooth fixed base plate 10 drives multiple sets of lock teeth 11 from the base lock teeth to pass through the limit groove 26 and enter the cabinet door lock tooth slot 24 to lock the cabinet door. Through the above structure, when the personnel walk down the movable pedal after the maintenance break or after the maintenance, the cabinet door is automatically reset and locked, avoiding casualties and equipment damage caused by irrelevant personnel accidentally entering and some small animals such as snakes and rats entering due to personnel forgetting to close the cabinet door in time, greatly improving the safety interlocking function of the switch cabinet and eliminating potential risks.

[0036] like Figure 5 , 6 As shown, the rotating mechanism includes a movable pedal 9 and a fixed shaft 901. The movable pedal 9 is fixedly mounted on the pedal frame 3 via the fixed shaft 901. The movable pedal 9 can be made of hard insulating material or a steel structure with an insulating rubber combination added to the top.

[0037] like Figure 5 , 6 As shown, the movable pedal 9 is installed in the pedal body inner groove 5 provided in the pedal body frame 3, and the pedal body frame 3 is in the shape of a right-angled trapezoid, and the pedal body groove 5 is also in the shape of a right-angled trapezoid, one end of the movable pedal 9 is fixedly installed on the fixed rotating shaft 901, and the fixed rotating shaft 901 is installed on the pedal body frame 3 at one side end of the pedal body groove 5 with a lower height, and at the same time, a slope block 4 for convenient entry of personnel and equipment is installed on the pedal body frame 3 outside the fixed rotating shaft 901, and a plurality of groups of elastic telescopic mechanisms are symmetrically installed on the pedal body frame 3 located at the bottom of the movable pedal 9, and the rotation of the movable pedal 9 is limited by the pedal body groove 5, and the pedal body frame 3 can be adjusted.

[0038] like Figure 5 , 6 As shown, the elastic telescopic mechanism includes a telescopic rod 7 with multi-stage telescopic function, a compression spring 8 and a top ball pressure-bearing body 15. The telescopic stroke of the telescopic rod is greater than the moving height of the movable pedal 9 when it rotates to open the door, thereby avoiding the situation where the limit is stuck.

[0039] like Figure 5 ,6 As shown, a plurality of groups of circular hole grooves 6 opening upward are evenly provided on the pedal body frame 3 located below the movable end of the movable pedal 9, a telescopic rod 7 with multi-stage telescopic function is installed in the circular hole groove 6, a top ball pressure-bearing body 15 is installed on the top of the telescopic rod 7, an extrusion spring 8 is installed on the telescopic rod 7 below the top ball pressure-bearing body 15, and its bottom surface is in contact with the top ball pressure-bearing body 15 when the movable pedal 9 is unloaded, and a telescopic locking mechanism is installed on one side surface of the movable end of the movable pedal 9.

[0040] like Figure 4-7 As shown, the telescopic locking mechanism includes a locking tooth fixing base plate 10 and multiple groups of locking teeth 11. The locking tooth fixing base plate 10 is fixedly installed on one side of the movable end of the movable pedal 9. Multiple groups of locking teeth 11 are evenly installed on the top surface of the locking tooth fixing base plate 10. At the same time, the switch cabinet base 2 located at the top of the front groove 25 of the base is provided with a base locking tooth penetrating limiting groove 26 corresponding to the multiple groups of locking teeth 11. The outer side of the top of the locking tooth 11 is provided with an arc surface for convenient cabinet door locking. At the same time, the inner side of the base locking tooth penetrating limiting groove 26 is set as an arc surface to prevent the locking tooth 11 from getting stuck. The left switch cabinet door 17 and the right switch cabinet door 18 are installed on the switch cabinet box 1, and cabinet door lock tooth clamps corresponding to the base locking tooth penetrating limiting groove 26 are provided at the bottom of the left switch cabinet door 17 and the right switch cabinet door 18. Slot 24, the lock tooth 11 and the base lock tooth pass through the limit groove 26 and the inner side of the cabinet door lock tooth slot 24 are respectively provided with a gap to prevent the structure from getting stuck, the left switch cabinet door 17 and the right switch cabinet door 18 are respectively provided with an inner convex block 19 and an inner groove 20 with an installation limit relationship with a chamfered arc surface, the left switch cabinet door 17 and the right switch cabinet door 18 are respectively installed on the symmetrical switch cabinet door installation rotating shaft 21, the bottom of the switch cabinet door installation rotating shaft 21 passes through the rotating shaft installation hole 27 symmetrically provided on the switch cabinet base 2 and is installed in the front groove 25 of the base, and a sliding extrusion steering mechanism is inserted into the switch cabinet door installation rotating shaft 21, and the lower side of the switch cabinet base 2 located above the outer side of the front groove 25 of the base is provided with an arc chamfered surface to avoid collision and limit with the movable pedal 9.

[0041] like Figure 5 , 9 As shown, the sliding extrusion steering mechanism comprises two groups of punch rods 12 and multiple groups of symmetrically installed sliding wheels 14. The sliding wheels 14 are provided to make extrusion smoother and the extrusion sliding resistance is smaller.

[0042] like Figure 8 , 9As shown, two groups of punch rods 12 are symmetrically mounted on the inner side surface of the movable end of the movable pedal 9, and guide wheel grooves 13 are symmetrically provided on both sides of the position where the punch rod 12 is inserted into the vertical guide groove 22, and sliding wheels 14 are installed on the guide wheel groove 13, which are radially perpendicular to the two side surfaces of the vertical guide groove 22. A gap is provided between the outer end of the punch rod 12 and the inner side surface of the vertical guide groove 22 to prevent the activity from getting stuck. At the same time, the vertical height of the vertical guide groove 22 is greater than or equal to the height of the lock tooth 11 inserted into the cabinet door lock tooth slot 24. The bottom of the vertical guide groove 22 is connected to the top of the arc-shaped extrusion guide groove 23. At the same time, the vertical guide groove 22 and the bottom and two side surfaces of the arc-shaped extrusion guide groove 23 are smoothly connected, which increases the smoothness of the extrusion rotation. The sliding wheel 14 is installed on the guide wheel groove 13, and the outer end extends out of the guide wheel groove 13 and contacts the two side surfaces of the vertical guide groove 22 and the arc-shaped extrusion guide groove 23, so as to achieve the effect of extrusion rotation.

[0043] like Figure 1 , 5 As shown, the pedal frame 3 and the switch cabinet base 2 installed at the bottom of the door opening side of the switch cabinet body 1 are fixedly connected on both sides through symmetrically installed connecting plates 16. An equipment mounting frame 28 is provided in the switch cabinet body 1. The connecting plates 16 are provided to prevent the pedal frame 3 and the switch cabinet base 2 from relative displacement, resulting in interlock failure triggered by inaccurate structural installation.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A switch cabinet with a safety interlock protection device, comprising a switch cabinet body (1) and a pedal frame (3) mounted at the front end of the switch cabinet body (1), characterized in that: The pedal frame (3) is fixedly connected to the switch cabinet base (2) installed at the bottom of the door opening side of the switch cabinet box (1); a rotating mechanism is installed on the pedal frame (3); a telescopic locking mechanism inserted into a base front groove (25) provided on the switch cabinet base (2) is installed on the movable end of the rotating mechanism; a plurality of sets of elastic telescopic mechanisms are installed on the pedal frame (3) at the bottom of the rotating mechanism; and sliding extrusion steering mechanisms are symmetrically installed on both sides of the movable end of the rotating mechanism; a switch cabinet door installation rotating shaft (21) is fixedly installed on both sides of the base front groove (25); the sliding extrusion steering mechanism is inserted into a vertical guide groove (22) provided vertically on the switch cabinet door installation rotating shaft (21) and facing outward; and an arc-shaped extrusion guide groove (23) with a circumferential angle of 90 degrees in a top view and connected to the bottom of the vertical guide groove (22) is provided on the circumferential surface of the switch cabinet door installation rotating shaft (21); The rotating mechanism comprises a movable pedal (9) and a fixed rotating shaft (901); The telescopic locking mechanism comprises a locking tooth fixing base plate (10) and a plurality of locking teeth (11), wherein the locking tooth fixing base plate (10) is fixedly mounted on one side surface of the movable end of the movable pedal (9), and a plurality of locking teeth (11) are evenly mounted on the top surface of the locking tooth fixing base plate (10), and a base locking tooth penetrating limiting groove (26) corresponding to the plurality of locking teeth (11) is provided on the switch cabinet base (2) at the top of the front groove (25) of the base, and an arc surface is provided on the outer side of the top of the locking tooth (11) for facilitating the locking of the cabinet door, and a arc surface is provided on the inner side of the base locking tooth penetrating limiting groove (26) for preventing the locking teeth (11) from being stuck, and a left switch cabinet door (17) and a right switch cabinet door (18) are mounted on the switch cabinet body (1), and a locking tooth penetrating limiting groove (26) is provided at the bottom of the left switch cabinet door (17) and the right switch cabinet door (18). There is a cabinet door lock tooth slot (24) corresponding to the base lock tooth through-limiting slot (26) in a one-to-one manner, and the lock tooth (11) is respectively provided with a gap between the inner side of the base lock tooth through-limiting slot (26) and the cabinet door lock tooth slot (24) to prevent the structure from being stuck, and the left switch cabinet door (17) and the right switch cabinet door (18) are respectively provided with an inner protrusion (19) and an inner groove (20) with a mounting limit relationship having a chamfered arc surface, and the left switch cabinet door (17) and the right switch cabinet door (18) are respectively installed on symmetrical switch cabinet door mounting rotating shafts (21), and the bottom of the switch cabinet door mounting rotating shaft (21) passes through the rotating shaft mounting holes (27) symmetrically provided on the switch cabinet base (2) and is installed in the front groove (25) of the base, and the sliding extrusion steering mechanism is inserted into the switch cabinet door mounting rotating shaft (21); The pedal frame (3) is fixedly connected to two sides of a switch cabinet base (2) installed at the bottom of the door opening side of the switch cabinet box (1) via symmetrically installed connecting plates (16), and an equipment mounting frame (28) is provided in the switch cabinet box (1).

2. A switch cabinet with a safety interlock protection device according to claim 1, characterized in that: The movable pedal (9) is mounted in a pedal body inner groove (5) provided in the pedal body frame (3), and the pedal body frame (3) is in the shape of a right-angled trapezoidal column, and the pedal body inner groove (5) is also in the shape of a right-angled trapezoidal column. One end of the movable pedal (9) is fixedly mounted on the fixed rotating shaft (901), and the fixed rotating shaft (901) is mounted on the pedal body frame (3) at a side end of the pedal body inner groove (5) with a lower height. At the same time, a slope block (4) for facilitating the entry of personnel and equipment is installed on the pedal body frame (3) located outside the fixed rotating shaft (901), and a plurality of sets of elastic telescopic mechanisms are symmetrically mounted on the pedal body frame (3) located at the bottom of the movable pedal (9).

3. A switch cabinet with a safety interlock protection device according to claim 2, characterized in that: The elastic telescopic mechanism comprises a telescopic rod (7) with multi-stage telescopic function, a compression spring (8) and a top ball pressure-bearing body (15).

4. A switch cabinet with a safety interlock protection device according to claim 3, characterized in that: A plurality of groups of circular hole grooves (6) opening upward are evenly arranged on the pedal body frame (3) below the movable end of the movable pedal (9); the telescopic rod (7) with multi-stage telescopic function is installed in the circular hole groove (6); a top ball pressure-bearing body (15) is installed on the top of the telescopic rod (7); the extrusion spring (8) is installed on the telescopic rod (7) below the top ball pressure-bearing body (15); when the movable pedal (9) is unloaded, its bottom surface contacts the top ball pressure-bearing body (15); and the telescopic locking mechanism is installed on one side surface of the movable end of the movable pedal (9).

5. The switch cabinet with a safety interlock protection device according to claim 1, characterized in that: The sliding extrusion steering mechanism comprises two groups of punch rods (12) and a plurality of groups of symmetrically installed sliding wheels (14).

6. A switch cabinet with a safety interlock protection device according to claim 5, characterized in that: Two groups of the punch rods (12) are symmetrically mounted on the inner side surface of the movable end of the movable pedal (9); guide wheel grooves (13) are symmetrically arranged on both sides of the position where the punch rods (12) are inserted into the vertical guide groove (22); sliding wheels (14) are mounted on the guide wheel grooves (13) which are radially perpendicular to the two side surfaces of the vertical guide groove (22); a gap is arranged between the outer end of the punch rod (12) and the inner side surface of the vertical guide groove (22) to prevent the movable from being stuck; at the same time, the vertical height of the vertical guide groove (22) is greater than or equal to the height of the lock tooth (11) inserted into the cabinet door lock tooth slot (24); the bottom of the vertical guide groove (22) is connected to the top of the arc-shaped extruded guide groove (23); at the same time, the bottom surface and the two side surfaces of the vertical guide groove (22) and the arc-shaped extruded guide groove (23) are smoothly connected.

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