A door protection device for a rotary explosion-proof control box

Abstract

The present invention discloses a rotary explosion-proof control box door protection device, which relates to the technical field of explosion-proof boxes. The present invention comprises a control box body and a crank arm, wherein the crank arm is provided with a first rotating structure, a first crank arm, a second rotating structure, a second crank arm, a third rotating structure and a fixed seat connected in sequence; a door is hinged on one side of the control box body, a handle is provided on one side of the door, and two symmetrically arranged fixing plates are fixedly connected to one side of the control box body, and the two fixing plates are respectively located above and below the door. By providing a push plate, in the event of an accident, it can be used to control the extension of the two baffles to achieve a layer of protection, and at the same time, the two gears rotate, thereby driving multiple gears to move vertically upward to achieve a second layer of protection, and then the card rod is clamped into the inside of the card slot to achieve a third layer of braking, and can also activate an alarm, with a high safety factor and easy use.

Description

Technical Field

[0001] The invention belongs to the technical field of explosion-proof boxes, and in particular relates to a box door protection device of a rotary explosion-proof control box. Background Art

[0002] With the rapid development of industries such as petrochemicals, metal smelting, and chemical pharmaceuticals, electrical components in control panels are prone to explosion or burnout in high temperature or hazardous gas environments, and explosion-proof positive pressure boxes are increasingly being used in system control.

[0003] After searching, the utility model with the announcement number CN215343530U is applicable to the technical field of explosion-proof control boxes, and provides an explosion-proof power supply control box, including a box door provided on one side outer surface of the box body, a baffle provided on the top outer surface of the box body, a base provided on the bottom outer surface of the box body, wire tubes provided on both sides of the box body, and ventilation partitions embedded on the outer surfaces of both sides of the box body. The explosion-proof power supply control box is provided with a rubber pad, and the design of the compression spring and the clamping block inside the wire tube can fully clamp the wires, and can clamp wires of different diameters at the same time, which is highly practical. The design of the insulation layer can improve the sealing performance on the one hand, and the insulating rubber material of the insulation layer improves the safety of the wire insertion work, and at the same time can make the sealing performance of the wiring port better, and dust is not easy to enter, so that the sealing performance of the entire box is higher, and the possibility of explosion is reduced.

[0004] Patent CN205644499U discloses a positive-pressure explosion-proof box for a touch screen, including a box body, which is provided with a touch screen mounting port, a cable hole, and an air source hole. The touch screen is installed at the touch screen mounting port, the communication cable enters the box through the cable hole and is connected to the touch screen, and the air source pipe passes through the air source hole to fill the box with gas.

[0005] The existing explosion-proof box has the following defects when in use:

[0006] 1. The bracket for the cables to pass through the explosion-proof box cannot rotate freely, resulting in fixed user control positions and low space utilization, making it inconvenient to use.

[0007] 2. Once a fault occurs, the door of the box may become loose and explode, which may lead to a dangerous situation. Summary of the Invention

[0008] The purpose of the present invention is to provide a door protection device for a rotary explosion-proof control box. By setting a push plate, it can be used to control the extension of two baffles in the event of an accident to achieve one layer of protection. At the same time, the two gears rotate, thereby driving multiple gear rods to move vertically upward to achieve a second layer of protection. The card rod is then inserted into the inside of the card slot to achieve a third layer of braking. It can also activate the alarm. It has a high safety factor, is easy to use, and solves the existing technical problems.

[0009] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0010] A rotary explosion-proof control box door protection device comprises: a control box body and a crank arm, wherein the crank arm comprises a first rotating structure, a first crank arm, a second rotating structure, a second crank arm, a third rotating structure and a fixed seat connected in sequence;

[0011] A door is hingedly connected to one side of the control box body, and a handle is provided on one side of the door. Two symmetrically arranged fixing plates are fixedly connected to one side of the control box body, and the two fixing plates are respectively located above and below the door. A first mounting groove is provided inside the door, and a first protective assembly for achieving protection is provided inside the first mounting groove;

[0012] The top inner wall and the bottom inner wall of the box door are both provided with a third mounting groove, and the interior of the third mounting groove is provided with a second protective component for achieving protection;

[0013] A second installation slot is provided inside the fixing plate, and a third protection component for achieving protection is provided inside the second installation slot.

[0014] Optionally, the first crank arm has a right-angle bend so that the first center axis and the second center axis respectively located at the end portions of the two connecting ends are arranged perpendicularly, and the second crank arm has a right-angle bend so that the third center axis and the fourth center axis respectively located at the end portions of the two connecting ends are arranged perpendicularly, and the first crank arm has an end with the first center axis connected to the control box body through a first rotating structure so that the control box body can rotate around the first center axis relative to the first crank arm, and the first crank arm has an end with the second center axis and an end with the third center axis connected to the second crank arm through a second rotating structure, and the second center axis and the third center axis are arranged concentrically, and the first crank arm can rotate around the third center axis relative to the second crank arm, and the second crank arm has an end with the fourth center axis connected to the fixed seat through the third rotating structure so that the second crank arm can rotate around the fourth center axis relative to the fixed seat;

[0015] A wire threading groove is provided in the crank arm, and the electric / gas wires connected to the control box body pass through the wire threading groove and extend to the fixing seat to pass out.

[0016] Optionally, the first protective component includes a push plate slidably connected to the inner wall of the first mounting groove, two symmetrically arranged second springs are fixedly connected between one side of the push plate and the inner wall of one side of the first mounting groove, the top inner wall and the bottom inner wall of the first mounting groove are both slidably penetrated by baffles, and the ends of the two baffles close to each other are fixedly connected to a trapezoidal block used in conjunction with the push plate, and the same first spring is fixedly connected between the trapezoidal block and the first mounting groove.

[0017] Optionally, the second protective assembly includes a sliding block slidably connected to the inside of the third mounting groove, the sliding block is used in conjunction with the baffle, a second rack is fixedly connected to one side of the sliding block, a third spring is fixedly connected between the bottom of the sliding block and the bottom inner wall of the third mounting groove, a rotating shaft is fixedly connected between the inner walls on both sides of the third mounting groove, and a gear is fixedly sleeved on the outer wall of the rotating shaft, and the gear is meshed with the second rack.

[0018] Optionally, the third protective component includes a sliding plate slidably connected to the inner walls on both sides of the second mounting groove, a plurality of baffle rods are fixedly connected to the top of the sliding plate, the top of the baffle rods extends to the outside of the fixed plate, a first rack is fixedly connected to one side of the sliding plate, the second mounting groove is connected to the third mounting groove, and the first rack is meshed with the gear.

[0019] Optionally, an elastic switch and an alarm are fixedly connected to the top inner wall of the second mounting groove, the elastic switch and the alarm are electrically connected, and the elastic switch is located on one side of the sliding plate and is used in conjunction with the sliding plate.

[0020] Optionally, a plurality of rectangular holes are provided on one side of the second mounting groove, a pulling block is slidably passed through the inside of the rectangular hole, a clamping rod is fixedly connected to one side of the pulling block, a clamping groove engaged with the clamping rod is provided on one side of the blocking rod, a plurality of fixed blocks are fixedly connected to the inner wall of the second mounting groove, the clamping rod slides through the fixed block, the same tension spring is fixedly connected between the fixed block and the pulling block, and the tension spring is sleeved on the clamping rod.

[0021] Optionally, one end of the plurality of pulling blocks is fixedly connected to the same pulling plate.

[0022] The embodiments of the present invention have the following beneficial effects:

[0023] By setting up a push plate, it can be used to control the extension of the two baffles in the event of an accident to achieve one level of protection. At the same time, the two gears rotate, thereby driving multiple gear levers to move vertically upward to achieve the second level of protection. The card rod is then inserted into the inside of the card slot to achieve the third level of braking. It can also activate the alarm, with a high safety factor and easy use.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of a three-dimensional structure of an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the door in one embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of a three-dimensional cross-sectional structure of a door in one embodiment of the present invention;

[0030] Figure 5 Schematic diagram of the three-dimensional structure of the fixing plate in one embodiment of the present invention;

[0031] Figure 6 A schematic diagram of a three-dimensional cross-sectional structure of a fixing plate in one embodiment of the present invention;

[0032] Figure 7 Schematic diagram of the three-dimensional structure of the rack and gear in one embodiment of the present invention.

[0033] In the figure: 1. control box body; 2. crank arm; 3. first rotating structure; 4. second rotating structure; 5. third rotating structure; 6. fixed seat; 7. fixed plate; 8. handle; 9. box door; 10. pull plate; 11. stop rod; 12. push plate; 13. baffle; 14. first spring; 15. trapezoidal block; 16. second spring; 17. first mounting slot; 18. pulling block; 19. rectangular hole; 20. tension spring; 21. fixed block; 22. clamping rod; 23. elastic switch; 24. alarm; 25. second mounting slot; 26. sliding plate; 27. clamping slot; 28. rotating shaft; 29. gear; 30. first rack; 31. third mounting slot; 32. third spring; 33. sliding block; 34. second rack. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inner" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

[0037] Example 1

[0038] See also Figure 1-2 As shown, in this embodiment, a rotary explosion-proof control box door protection device is provided, which includes a control box body 1 and a crank arm 2. The crank arm 2 is provided with a first rotating structure 3, a first crank arm, a second rotating structure 4, a second crank arm, a third rotating structure 5 and a fixing seat 6 which are connected in sequence.

[0039] A door 9 is hinged on one side of the control box body 1, and a handle 8 is provided on one side of the door 9. Two symmetrically arranged fixing plates 7 are fixedly connected to one side of the control box body 1. The two fixing plates 7 are respectively located above and below the door 9. A first mounting groove 17 is opened inside the door 9, and a first protective component for achieving protection is provided inside the first mounting groove 17;

[0040] The top inner wall and the bottom inner wall of the box door 9 are both provided with a third mounting groove 31, and the interior of the third mounting groove 31 is provided with a second protective component for achieving protection;

[0041] A second mounting groove 25 is formed inside the fixing plate 7 , and a third protection component for achieving protection is provided inside the second mounting groove 25 .

[0042] In one aspect of this embodiment, Figure 1As shown, the first crank arm has a right-angle bend so that the first and second central axes, respectively located at the two connecting ends, are arranged perpendicularly. The second crank arm has a right-angle bend so that the third and fourth central axes, respectively located at the two connecting ends, are arranged perpendicularly. The end of the first crank arm provided with the first central axis is connected to the control box body 1 via a first rotating structure 3, so that the control box body 1 can rotate about the first central axis relative to the first crank arm. The end of the first crank arm provided with the second central axis is connected to the end of the second crank arm provided with the third central axis via a second rotating structure 4, and the second and third central axes are arranged concentrically. The first crank arm can rotate about the third central axis relative to the second crank arm. The end of the second crank arm provided with the fourth central axis is connected to the fixed seat 6 via a third rotating structure 5, so that the second crank arm can rotate about the fourth central axis relative to the fixed seat 6. Optionally, a wire groove is provided in the crank arm 2, and the electrical / gas wires connected to the control box body 1 pass through the wire groove and extend to the fixed seat 6 and then out. The present application is not limited to this.

[0043] In one aspect of this embodiment, Figure 3-4 As shown, the first protective assembly includes a pushing plate 12 slidably connected to the inner wall of the first mounting groove 17, and two symmetrically arranged second springs 16 are fixedly connected between one side of the pushing plate 12 and the inner wall of one side of the first mounting groove 17. The top inner wall and the bottom inner wall of the first mounting groove 17 are both slidably penetrated by a baffle 13, and the baffle 13 can be extended to achieve a first layer of protection, and at the same time push the two sliding blocks 33. The ends of the two baffles 13 close to each other are fixedly connected to a trapezoidal block 15 used in conjunction with the pushing plate 12, and the trapezoidal block 15 can be easily pushed by the pushing plate 12. The same first spring 14 is fixedly connected between the trapezoidal block 15 and the first mounting groove 17.

[0044] In another aspect of this embodiment, Figure 7 As shown, the second protective assembly includes a sliding block 33 slidably connected to the inside of the third mounting groove 31, the sliding block 33 is used in conjunction with the baffle 13, and a second rack 34 is fixedly connected to one side of the sliding block 33, and a third spring 32 is fixedly connected between the bottom of the sliding block 33 and the bottom inner wall of the third mounting groove 31, and a same rotating shaft 28 is fixedly connected between the inner walls on both sides of the third mounting groove 31, and a gear 29 is fixedly sleeved on the outer wall of the rotating shaft 28, and the gear 29 is meshed with the second rack 34. The movement of the sliding block 33 drives the movement of the second rack 34, and finally realizes the extension of multiple blocking rods 11.

[0045] In other aspects of this embodiment, Figure 5-6As shown, the third protective assembly includes a sliding plate 26 that is slidably connected to the inner walls on both sides of the second mounting groove 25, and a plurality of baffle rods 11 are fixedly connected to the top of the sliding plate 26. The top of the baffle rod 11 extends to the outside of the fixed plate 7, and a first rack 30 is fixedly connected to one side of the sliding plate 26. The second mounting groove 25 is connected to the third mounting groove 31, and the first rack 30 is engaged with the gear 29.

[0046] Example 2

[0047] Improvements based on Example 1: Refer to the attached Figure 5 A plurality of rectangular holes 19 are provided on one side of the second mounting groove 25, and a pulling block 18 is slidably penetrated inside the rectangular hole 19. A card rod 22 is fixedly connected to one side of the pulling block 18. A card slot 27 that engages with the card rod 22 is provided on one side of the blocking rod 11. A plurality of fixed blocks 21 are fixedly connected to the inner wall of the second mounting groove 25, and the card rod 22 slides through the fixed block 21. The same tension spring 20 is fixedly connected between the fixed block 21 and the pulling block 18, and the tension spring 20 is sleeved on the card rod 22. One end of the plurality of pulling blocks 18 is fixedly connected to the same pull plate 10. When the danger is over, the staff can pull the pull plate 10 from the outside, thereby driving the plurality of pulling blocks 18 to move laterally, thereby releasing the braking state of the device.

[0048] Example 3

[0049] Improvements based on Example 1: Refer to the attached Figure 6 The top inner wall of the second mounting groove 25 is fixedly connected with an elastic switch 23 and an alarm 24 . The elastic switch 23 and the alarm 24 are electrically connected. The elastic switch 23 is located on one side of the sliding plate 26 and is used in conjunction with the sliding plate 26 to activate the alarm 24 .

[0050] The use process and working principle of the technical solution of the present invention are as follows:

[0051] In the event of an accident, when the internal electrical components explode, the impact force will drive the push plate 12 to move horizontally. The push plate 12 pushes the two trapezoidal blocks 15 away from each other and squeezes the second spring 16. The two trapezoidal blocks 15 drive the two baffles 13 away from each other and squeeze the first spring 14. The two baffles 13 push the two sliding blocks 33 on the top inner wall and the bottom inner wall of the control box body 1 respectively. The baffles 13 enter the interior of the third mounting groove 31 to achieve the first layer of braking. The sliding blocks 33 drive the second rack 34 to move vertically downward and squeeze the third spring 32. The second rack 34 drives the gear 29 to rotate. The gear 29 drives the first rack 30 to move vertically upward, the first rack 30 drives the sliding plate 26 to move vertically upward, the sliding plate 26 drives multiple baffles 11 to move vertically upward, the baffles 11 move vertically upward to one side of the box door 9, realizing the second layer of braking, and at the same time multiple card rods 22 are locked into the corresponding card slots 27 to ensure the stability of the baffles 11 and realize the third layer of braking. The sliding plate 26 squeezes the elastic switch 23 and activates the alarm 24. When the danger is over, the staff can pull the pull plate 10 from the outside, thereby driving multiple pulling blocks 18 to move horizontally to release the braking state of the device.

[0052] It should be noted that, in the description of this specification, descriptions such as "first", "second", etc. are only used to distinguish various features and have no actual order or directional meaning, and this application is not limited to this.

[0053] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0054] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A door protection device for a rotary explosion-proof control box, characterized in that: include: A control box body (1) and a crank arm (2), wherein the crank arm (2) is provided with a first rotating structure (3), a first crank arm, a second rotating structure (4), a second crank arm, a third rotating structure (5) and a fixing seat (6) connected in sequence; A door (9) is hingedly connected to one side of the control box body (1), and a handle (8) is provided on one side of the door (9). Two symmetrically arranged fixing plates (7) are fixedly connected to one side of the control box body (1), and the two fixing plates (7) are respectively located above and below the door (9). A first mounting groove (17) is provided inside the door (9), and a first protective component for achieving protection is provided inside the first mounting groove (17); The top inner wall and the bottom inner wall of the box door (9) are both provided with a third mounting groove (31), and a second protective component for achieving protection is provided inside the third mounting groove (31); A second installation groove (25) is provided inside the fixing plate (7), and a third protection component for achieving protection is provided inside the second installation groove (25); The first protective component includes a push plate (12) slidably connected to the inner wall of the first mounting groove (17), two second springs (16) symmetrically arranged are fixedly connected between one side of the push plate (12) and the inner wall of one side of the first mounting groove (17), a baffle (13) is slidably passed through the top inner wall and the bottom inner wall of the first mounting groove (17), and one end of the two baffles (13) close to each other is fixedly connected to a trapezoidal block (15) used in conjunction with the push plate (12), and the same first spring (14) is fixedly connected between the trapezoidal block (15) and the first mounting groove (17); The second protection component includes a sliding block (33) slidably connected to the inside of the third mounting groove (31), the sliding block (33) is used in conjunction with the baffle (13), a second rack (34) is fixedly connected to one side of the sliding block (33), a third spring (32) is fixedly connected between the bottom of the sliding block (33) and the bottom inner wall of the third mounting groove (31), a rotating shaft (28) is fixedly connected between the inner walls on both sides of the third mounting groove (31), and a gear (29) is fixedly provided on the outer wall of the rotating shaft (28), and the gear (29) is meshed with the second rack (34); The third protection component includes a sliding plate (26) slidably connected to the inner walls on both sides of the second mounting groove (25), a plurality of blocking rods (11) are fixedly connected to the top of the sliding plate (26), and the tops of the blocking rods (11) extend to the outside of the fixed plate (7), and a first rack (30) is fixedly connected to one side of the sliding plate (26), the second mounting groove (25) is connected to the third mounting groove (31), and the first rack (30) is meshed with the gear (29); A plurality of rectangular holes (19) are provided on one side of the second mounting groove (25), a pulling block (18) is slidably passed through the interior of the rectangular hole (19), a clamping rod (22) is fixedly connected to one side of the pulling block (18), a clamping groove (27) is provided on one side of the blocking rod (11) and is engaged with the clamping rod (22), a plurality of fixed blocks (21) are fixedly connected to the inner wall of the second mounting groove (25), the clamping rod (22) slides through the fixed block (21), a same tension spring (20) is fixedly connected between the fixed block (21) and the pulling block (18), and the tension spring (20) is sleeved on the clamping rod (22).

2. A rotary explosion-proof control box door protection device as claimed in claim 1, characterized in that: The first crank arm has a right-angle bend so that the first center axis and the second center axis respectively located at the two connecting end portions are arranged perpendicularly, and the second crank arm has a right-angle bend so that the third center axis and the fourth center axis respectively located at the two connecting end portions are arranged perpendicularly, and the first crank arm has an end provided with the first center axis connected to the control box body (1) through a first rotating structure (3) so that the control box body (1) can rotate around the first center axis relative to the first crank arm, and the first crank arm has an end provided with the second center axis and an end provided with the third center axis connected to the second crank arm through a second rotating structure (4) and the second center axis and the third center axis are arranged concentrically, and the first crank arm can rotate around the third center axis relative to the second crank arm, and the second crank arm has an end provided with the fourth center axis connected to the fixed seat (6) through a third rotating structure (5) so that the second crank arm can rotate around the fourth center axis relative to the fixed seat (6); A wire threading groove is provided in the crank arm (2), and the electric / gas wire connected to the control box body (1) passes through the wire threading groove and extends to the fixing seat (6) and then exits.

3. The door protection device of a rotary explosion-proof control box according to claim 1, characterized in that: An elastic switch (23) and an alarm (24) are fixedly connected to the top inner wall of the second mounting groove (25), and the elastic switch (23) and the alarm (24) are electrically connected. The elastic switch (23) is located on one side of the sliding plate (26) and is used in conjunction with the sliding plate (26).

4. The door protection device of a rotary explosion-proof control box according to claim 1, characterized in that: One end of the plurality of pulling blocks (18) is fixedly connected to the same pulling plate (10).

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