Outdoor low-voltage cable branch box

Abstract

This invention relates to the field of low-voltage cable branch box technology, and discloses an outdoor low-voltage cable branch box, comprising: a bracket inside the branch box, a connecting rod and a fixed plate fixed on the bracket, the connecting rod connecting to a knife switch, the fixed plate connecting to an air switch, and the air switch having an end cover; it also includes a protection section, a cleaning section, and a pressure spraying section. The protection section includes a blocking member disposed on the outside of the end cover and a guide member disposed below the knife switch. The baffle of the blocking member cooperates with the end cover through a spring plate. When the lever of the knife switch is rotated, the guide pressure plate of the guide member is linked by the release part to push the baffle away, thereby allowing the end cover to be opened to operate the air switch; the cleaning section includes a suction cleaning member housed in the inner cavity of the pressure plate and a guide adjustment member connected to the blocking member for easy cleaning of the end cover; the pressure spraying section includes a pressure storage member and a spraying member. This invention mechanically forces the correct operating sequence to avoid incorrect closing, while integrating a cleaning device and automatically supplying cleaning fluid, resulting in a simple, safe, and reliable structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of low-voltage cable branch boxes, in particular to an outdoor low-voltage cable branch box. BACKGROUND

[0002] As an important equipment in power distribution system, the outdoor low-voltage cable branch box is widely used in the occasion of branching the circuit of a main cable into multiple branch cables. The traditional cable branch box is mainly composed of a box body, a knife switch and an air switch. The knife switch is used to cut off all the currents to the air switch, and the air switch is used to branch the circuit of the cable into multiple circuits and can control the current output separately. The strict power-on and power-off sequence must be followed, that is, the knife switch should be closed first and then the air switch should be closed when power-on, and the air switch should be opened first and then the knife switch should be opened when power-off. In order to facilitate the observation of the working state of the air switch by the staff, an observation window is usually arranged on the end cover of the air switch in the existing cable branch box. However, after a long time of use, the observation window is easily affected by dust and stains and becomes dirty, which seriously affects the observation and judgment of the internal state of the air switch by the staff.

[0003] In actual application, the cable branch box lacks effective operation sequence protection mechanism and cannot force the staff to operate the closing and power-off in the correct sequence from the structure. Once the operation sequence is wrong (such as closing the air switch first and then closing the knife switch), it may cause equipment damage and even safety accidents. At the same time, the observation window on the end cover of the air switch is easily affected by stains and affects observation after a long time of use, and the existing equipment lacks convenient cleaning and maintenance device and cleaning liquid supply system, so the staff needs to carry external tools for cleaning, which is inconvenient to operate and low in maintenance efficiency. SUMMARY

[0004] The present application provides a new outdoor low-voltage cable branch box which can prevent the operation sequence error of the knife switch and the air switch and facilitate cleaning and maintenance.

[0005] To solve the above technical problems, the technical scheme of the present application is as follows:

[0006] In a first aspect, an outdoor low-voltage cable branch box includes a branch box body and a cover rotatably arranged on the front of the branch box body. The inner side of the branch box body is connected to two brackets by fixing components. The front of the two brackets is connected to a connecting rod and a fixed plate by fixing components. The fixed plate is located below the connecting rod. The front of the connecting rod is connected to a knife switch for connecting a low-voltage cable by fixing components. The knife switch is provided with a lever for operating the knife switch. The front of the fixed plate is connected to a plurality of air switches for connecting branch cables. The air switches are electrically connected to the knife switch. The front of the air switches is provided with an end cover. The outdoor low-voltage cable branch box further includes:

[0007] The protection unit is located on the outside of the end cover and cooperates with the gate arm. It includes a blocking member located on the outside of the end cover and penetrating between the fixed plate and the displacement bracket, and a guide member located below the knife switch and cooperating with the knife switch, so as to avoid incorrect closing sequence of the knife switch and the air switch.

[0008] The cleaning section, connected to the delivery section, includes a suction cleaning component housed in the guide pusher and a guide adjustment component connected to the blocking component. The guide adjustment component is elastically connected to the suction cleaning component to guide the cleaning end cap to move without affecting the movement of the blocking component.

[0009] The pressure spraying section penetrates the fixed plate and includes a pressure storage component located behind the fixed plate and a spray guide component that penetrates the fixed plate and the guide component. The spray guide component is in contact with the suction and wiping component, and the pressure storage component and the guide component are magnetically coupled to automatically supply cleaning fluid to the suction and wiping component.

[0010] Furthermore, the blocking element includes:

[0011] Elastic plates are symmetrically fixed at the top and bottom ends of the fixed plate;

[0012] Two baffles are symmetrically arranged on the front of the end cap and connected to the end of the elastic plate.

[0013] Furthermore, the guide component includes:

[0014] A support plate is fixed between the two brackets and located behind the fixed plate;

[0015] The first spring is symmetrically arranged through the fixed plate and connected to the support plate at one end.

[0016] The support is fixed to the other end of the spring;

[0017] The pressure guide plate is fixed to one end of the support column and located between the two baffles. It has a gap with the fixed plate and cooperates with the baffles.

[0018] The fastening components are mounted on the support plate and connected to the gate arm.

[0019] Furthermore, the unbinding component includes:

[0020] A groove is formed at the end of the gate arm;

[0021] A hemisphere, connected to the gate arm, is located within a groove;

[0022] The guide rods are symmetrically fixed on the side of the pressure plate near the support plate;

[0023] Interconnect board, connected to the outside of the guide rod;

[0024] Support plate, fixed on interconnect plate;

[0025] Arc-shaped inclined plate, fixed on the support plate, and located in the moving path of the half-spherical ball along with the rotation of the gate lever.

[0026] Further, the suction and wiping member comprises:

[0027] Inner cavity, opened on one side of the pressure guide plate close to the end cover;

[0028] Brush plate, inside the receiving groove and the inner cavity;

[0029] Sponge, fixed on one side of the brush plate close to the support plate.

[0030] Further, the guide and adjusting member comprises:

[0031] Guide groove, opened on one side of the baffle close to the elastic plate;

[0032] Bent lever, symmetrically connected to one side of the brush plate;

[0033] N lever, elastically connected to one end of the bent lever away from the brush plate, and extending to the inside of the guide groove for guiding and cooperating.

[0034] Further, the elastic connection comprises:

[0035] Insertion slot, opened on one end of the bent lever away from the brush plate;

[0036] Plug, fixed on one end of the N lever close to the bent lever, and inserted into the insertion slot;

[0037] Second spring, arranged in the insertion slot, with one end connected to the bent lever and the other end connected to the plug.

[0038] Further, the pressure storage member comprises:

[0039] Bottom plate, symmetrically fixed on one side close to the fixed plate;

[0040] Corrugated bag, connected to one side of the bottom plate close to the fixed plate;

[0041] Filling cap, arranged through the upper end of the corrugated bag;

[0042] Magnetic pressure part, connected to the corrugated bag and the pressure guide plate.

[0043] Further, the magnetic pressure part comprises:

[0044] Support sleeve, arranged outside the pressure guide plate through the connecting part;

[0045] First magnet, arranged through the support sleeve;

[0046] Second magnet, fixed on one side of the corrugated bag close to the fixed plate, and repelling the first magnet.

[0047] Further, the guide and spraying member comprises:

[0048] A hose is arranged through the support plate, one end of which is arranged through the bottom plate and communicated with the corrugated bag, and the other end is arranged through the support post and the first spring;

[0049] A nozzle is inlaid at the end of the support post, communicated with the inner cavity, and connected with the other end of the hose.

[0050] The above scheme of the present application at least has the following beneficial effects:

[0051] By arranging the power supply part, the cleaning part and the pressure spraying part, the three functions of operation sequence protection, cleaning and maintenance and automatic liquid supply are organically combined through the mechanical linkage structure. When the worker needs to supply power, the worker must first rotate the gate lever of the knife switch, which will link and push the baffle to move away from the end cover, so as to allow the end cover to be opened to operate the air switch, and the correct operation sequence is forced to be realized from the mechanical structure, so that the closing sequence error of the knife switch and the air switch is fundamentally avoided. Meanwhile, in the operation process of the knife switch, the cleaning liquid is automatically squeezed out of the corrugated bag through the hose and sprayed onto the sponge stored in the inner cavity of the pressure guide plate by using the magnetic repulsion principle. The worker can move the sponge to the surface of the end cover for wiping through the guiding effect of the guide part, so that the integrated cleaning and maintenance function is realized. The overall design fully utilizes the operation action of the equipment itself as a power source, without the need for additional power devices. The structure is simple, the cost is low, and the reliability is high. The safe operation of the equipment is ensured, and the daily maintenance is convenient. The present application has good practicability and popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 A low-voltage cable branch box is provided in the embodiment of the present application;

[0053] Figure 2 A low-voltage cable branch box is provided in the embodiment of the present application;

[0054] Figure 3 A low-voltage cable branch box is provided in the embodiment of the present application;

[0055] Figure 4 A low-voltage cable branch box is provided in the embodiment of the present application; Figure 3 A low-voltage cable branch box is provided in the embodiment of the present application;

[0056] Figure 5 A low-voltage cable branch box is provided in the embodiment of the present application;

[0057] Figure 6 A low-voltage cable branch box is provided in the embodiment of the present application;

[0058] Figure 7 A low-voltage cable branch box is provided in the embodiment of the present application;

[0059] Figure 8 A perspective view of the hose and nozzle assembly provided in an embodiment of the present invention;

[0060] Figure 9 An exploded perspective view of the plug and the bend provided in an embodiment of the present invention;

[0061] Figure 10 Provided for embodiments of the present invention Figure 3 The structural diagram at point B in the diagram.

[0062] Explanation of reference numerals in the attached figures:

[0063] In the diagram: 1. Branch box; 2. Mounting plate; 3. Box cover; 4. Bracket; 5. Fixing hole; 6. Connecting rod; 7. Fixing plate; 8. Knife switch; 9. Air switch; 10. End cap; 11. Gate arm; 12. Hemisphere; 13. Elastic plate; 14. Baffle; 15. Support plate; 16. First spring; 17. Support column; 18. Pressure guide plate; 19. Guide rod; 20. Through hole; 21. Guide hole; 22. Support plate; 23. Curved inclined plate; 24. Inner cavity; 25. Brush plate; 26. Sponge; 27. Guide groove; 28. Bent rod; 29. ​​Slot; 30. N rod; 31. Plug; 32. Second spring; 33. Pull rod; 34. Connecting plate; 35. Support sleeve; 36. First magnet; 37. Base plate; 38. Corrugated bladder; 39. Second magnet; 40. Hose; 41. Nozzle; 42. Filling cap; 43. Interconnecting plate. Detailed Implementation

[0064] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0065] like Figures 1 to 10 As shown, an embodiment of the present invention provides an outdoor low-voltage cable branch box, including a branch box body 1 and a box cover 3 rotatably disposed on the front of the branch box body 1. Two supports 4 are symmetrically connected to the inner side of the branch box body 1 via fixing components. A connecting rod 6 and a fixed plate 7 are connected and fixed to each other on the front of the two supports 4 via fixing components, and the fixed plate 7 is located below the connecting rod 6. A knife switch 8 for connecting low-voltage cables is connected to the front of the connecting rod 6 via fixing components. A lever 11 for operating the knife switch 8 is provided on the knife switch 8. Multiple air switches 9 for connecting branch cables are connected to the front of the fixed plate 7, and the air switches 9 are electrically connected to the knife switches 8. An end cover 10 is provided on the front of the air switch 9. The box also includes:

[0066] The protection unit is located outside the end cover 10 and cooperates with the gate arm 11. It includes a blocking member located outside the end cover 10 and passing through the fixed plate 7 and the displacement bracket 4, and a guide member located below the knife switch 8 and cooperating with the knife switch 8, so as to avoid the incorrect closing sequence of the knife switch 8 and the air switch 9.

[0067] The cleaning section is connected to the delivery section. It includes a suction cleaning component housed in the pusher and a guide adjustment component connected to the blocking component. The guide adjustment component is elastically connected to the suction cleaning component to guide the cleaning end cap 10 to move without affecting the movement of the blocking component.

[0068] The pressure spraying section is installed through the fixed plate 7. It includes a pressure storage member installed behind the fixed plate 7 and a spray guide member installed through the fixed plate 7 and the guide member. The spray guide member is in contact with the suction and wiping member. The pressure storage member and the guide member are magnetically engaged to automatically supply cleaning fluid to the suction and wiping member.

[0069] Specifically, the end cover 10 has an observation window on the front, which allows staff to easily observe the situation inside the air switch 9. The outer side of the branch box 1 is symmetrically welded with mounting plates 2. The bracket 4 has uniformly through-holes 5. The bracket 4 is connected to the mounting plate 7 and the connecting rod 6 by bolts through the mounting holes 5.

[0070] In practical application, the branch box 1 provides rotational support for the cover 3 and works with the cover 3 to protect its internal facilities. The mounting plate 2 provides a through-channel for fixing components such as bolts, allowing the mounting plate 2 to be securely installed at the work site to support the branch box 1. The branch box 1 also provides stable support for the bracket 4. The bracket 4 provides installation space for the connecting rod 6 and the fixed plate 7, allowing the connecting rod 6 to securely support the knife switch 8 and the fixed plate 7 to securely support the air switch 9. The knife switch 8 can cut off all current to the air switch 9 and provide space for electrical connection of low-voltage cables and air switches 9. Multiple air switches 9 can branch the circuit of a cable into multiple circuits and allow each circuit to control its current output individually.

[0071] According to the actual needs, the staff can fix the branch box 1 from the mounting plate 2 to the work site using the fixing parts. Then, under the support of the branch box 1, rotate the box cover 3 to open the opening of the branch box 1. Then, connect the knife switch 8 to the connecting rod 6 using the fixing parts, and connect the air switch 9 to the fixed plate 7 using the fixing parts. At the same time, connect the low-voltage cable of the input current to the knife switch 8, and then connect the knife switch 8 to the air switch 9. Finally, connect the circuit of the output current to the output terminal of the air switch 9 to realize cable branching. When the staff needs to supply power, they should first close the knife switch 8 and then close the air switch 9; when the power is cut off, first open the air switch 9 and then open the knife switch 8.

[0072] In a preferred embodiment of the present invention, the blocking element includes:

[0073] Elastic plates 13 are symmetrically fixed at the upper and lower ends of the fixed plate 7;

[0074] Two baffles 14 are symmetrically arranged on the front of the end cap 10 and connected to the end of the elastic plate 13.

[0075] Specifically, the fixed plate 7 can provide stable support for the elastic plate 13. The elastic plate 13 is elastic and can deform under the action of external force. When the external force disappears, it will rebound. The elastic plate 13 can also provide elastic support for the baffle 14. The baffle 14 can resist the positioning end cover 10 under the support of the elastic plate 13, providing resistance to the opening of the end cover 10, so as to prevent the operator from opening the end cover 10 to operate the air switch 9 to close the circuit.

[0076] The guide components include:

[0077] Support plate 15 is fixed between two brackets 4 and located behind the fixed plate 7;

[0078] The first spring 16 is symmetrically arranged through the fixed plate 7, and one end is connected to the support plate 15.

[0079] Support 17 is fixed to the other end of the spring;

[0080] The pressure guide plate 18 is fixed to one end of the support column 17 and is located between the two baffles 14. There is a gap between it and the fixed plate 7, and it cooperates with the baffles 14.

[0081] The fastening component is mounted on the support plate 15 and connected to the gate arm 11.

[0082] Specifically, the support plate 15 can provide stable support for the first spring 16 under the support of the bracket 4. The first spring 16 can provide support for the pillar 17 and can be compressed and contracted under the action of external force. When the external force disappears, it will rebound. The pillar 17 can provide support for the pressure guide plate 18 under the support of the first spring 16. The two ends of the pressure guide plate 18 have an inclined angle, which can be used to cooperate with the baffle 14 to push the baffle 14 to move away from the pressure guide plate 18, so that the baffle 14 can push the elastic plate 13 to bend and deform.

[0083] The components to be unsecured include:

[0084] A groove is made at the end of the gate arm 11;

[0085] The hemispherical 12 is connected to the gate arm 11 and is located in the groove;

[0086] Guide rod 19 is symmetrically fixed on the side of pressure plate 18 near support plate 15;

[0087] Interconnect board 43 is connected to the outside of guide rod 19;

[0088] Support plate 22 is fixed on interconnect plate 43;

[0089] The arc-shaped inclined plate 23 is fixed on the support plate 22 and is located on the moving path of the hemisphere 12 as it rotates with the gate arm 11.

[0090] Specifically, the solid plate 7 has symmetrical through holes 20 located outside the first spring 16, providing space for the spring to pass through and move. The solid plate 7 also has symmetrical guide holes 21 located above and below the through holes 20, outside the guide rod 19, providing a passageway and guiding function for the guide rod 19. Operators can close the knife switch 8 by rotating the gate arm 11 90 degrees clockwise. The gate arm 11 provides space for the groove and stable support for the hemisphere 12. The hemisphere 12 can utilize its curvature and arc-shaped slope... When plate 23 contacts, and during clockwise rotation, the inclined angle of the curved plate 23 gradually presses the curved plate 23 towards the back of the branch box 1, so that the curved plate 23 can drive the interconnecting plate 43 to move together through the support plate 22. In turn, the interconnecting plate 43 can drive the guide rod 19 to move together during the movement, so that the guide rod 19 can drive the pressure plate 18 to move towards the fixed plate 7 along the guide hole 21. The pressure plate 18 can push the baffle 14. The curvature of the hemispherical 12 can minimize the contact area between the gate arm 11 and the curved plate 23, reduce friction, and make it easier to push the curved plate 23.

[0091] In practical application, when power needs to be supplied, the operator first needs to rotate the gate arm 11 clockwise by 90 degrees. During the rotation, the gate arm 11 drives the hemisphere 12 to rotate as well. The hemisphere 12, in conjunction with the arc-shaped inclined plate 23, pushes the support plate 22 away from the fixed plate 7. The support plate 22 can then drive the guide rod 19 to move together through the interconnecting plate 43. Under the action of external force and the guidance of the guide hole 21, the guide rod 19 drives the pressure plate 18 to move closer to the fixed plate 7. As a result, the pressure plate 18 can gradually push the baffle 14 away from the pressure plate 18 during the movement. This allows the baffle 14 to deform the elastic plate 13. After the gate arm 11 is rotated 90 degrees clockwise, the baffle 14 can be removed from the front of the end cover 10, thus avoiding obstruction of opening the end cover 10. Afterward, the operator can open the end cover 10 and operate the air switch 9 to close the circuit. This prevents the operator from making mistakes in the operation sequence when closing the circuit breaker to supply power to the cable branch box.

[0092] When a power outage is required, the operator can open the end cover 10 and pull the air switch 9. Then, the operator can rotate the lever 11 counterclockwise, causing the lever 11 to gradually separate the hemispherical ball 12 from the arc-shaped inclined plate 23. This will cause the pressure on the arc-shaped inclined plate 23 to disappear. Subsequently, the first spring 16, supported by the support plate 15, will use its rebound force to push the pressure guide plate 18 away from the support plate 15 through the support column 17. This will allow the pressure guide plate 18 to move together with the interconnecting plate 43 via the guide rod 19. This will allow the interconnecting plate 43 to move and reset together with the arc-shaped inclined plate 23 via the support plate 22. At the same time, as the pressure guide plate 18 moves away from the support plate 15, the thrust on the baffle 14 will gradually disappear. This will allow the baffle 14 to gradually move to the front of the end cover 10 and reset under the rebound force of the elastic plate 13.

[0093] In a preferred embodiment of the present invention, the suction member includes:

[0094] The inner cavity 24 is formed on the side of the pressure guide plate 18 near the end cover 10;

[0095] Brush plate 25, inner side of storage slot cavity 24;

[0096] Sponge 26 is fixed to the side of brush plate 25 near support plate 15.

[0097] Specifically, the pressure guide plate 18 provides opening space for the inner cavity 24, the inner cavity 24 provides a moving channel and storage space for the brush plate 25 and the sponge 26, the brush plate 25 provides support for the sponge 26, and the sponge 26 has absorbency and elasticity, and has a certain degree of roughness.

[0098] The guiding components include:

[0099] The guide groove 27 is formed on the side of the baffle 14 near the elastic plate 13;

[0100] The bent rod 28 is symmetrically connected to one side of the brush plate 25;

[0101] N rod 30 is elastically connected to the end of the bent rod 28 away from the brush plate 25 and extends to the inside of the guide groove 27 for guidance and engagement.

[0102] Specifically, a pull rod 33 is fixed on the N rod 30. The pull rod 33 allows the staff to easily pull the N rod 30 out of the guide groove 27 for maintenance as needed. The baffle 14 provides space for the guide groove 27 to open, and the guide groove 27 provides a moving guide for the N rod 30. In conjunction with the baffle 14, it can provide support for the N rod 30. The bent rod 28 provides support for the brush plate 25, and the staff can push the brush plate 25 to move through the bent rod 28.

[0103] Resilient connections include:

[0104] Slot 29 is provided at the end of the bent rod 28 away from the brush plate 25;

[0105] The plug 31 is fixed to one end of the N rod 30 near the bent rod 28 and inserted into the slot 29;

[0106] The second spring 32 is disposed in the slot 29, with one end connected to the bent rod 28 and the other end connected to the plug 31.

[0107] Specifically, the bent rod 28 provides space for the slot 29, which in turn provides space for the plug 31 to be inserted and for the second spring 32 to be stored. The bent rod 28 also provides support for the second spring 32 and is connected to the N rod 30 via the second spring 32. This allows the N rod 30 to support the bent rod 28 and the brush plate 25 via the second spring 32. The bent rod 28 is flexible and can deform under external force. When the external force disappears, it will return to its original position. When the pressure guide plate 18 moves towards the fixed plate 7, the bent rod 28 will deform under the influence of the pressure guide plate 18 through the brush plate 25 and the support provided by the baffle 14 in conjunction with the N rod 30 and the plug 31. After the pressure guide plate 18 returns to its original position, the bent rod 28 will rebound and return to its original position.

[0108] In practical application, when the baffle 14 is pushed away from the pressure guide plate 18, the baffle 14 will move the plug 31 together through the N rod 30, and the plug 31 will pull the end of the second spring 32 away from the bent rod 28, so that the second spring 32 can be stretched and deformed under the support of the bent rod 28. Thus, the setting of the bent rod 28 and the N rod 30 will not affect the movement of the baffle 14. During the process of the baffle 14 moving closer to the pressure guide plate 18 to reset, the second spring 32 will rebound and reset using the rebound force. At the same time, the N rod 30 will move with the baffle 14 and move closer to the bent rod 28, so that the N rod 30 can drive the plug 31 to gradually insert into the inside of the slot 29 and connect with the bent rod 28.

[0109] When the observation window of the end cover 10 is dirty and affects the observation of the air switch 9, the operator can first turn the lever 11 counterclockwise by ninety degrees (e.g., Figure 3 (As shown), then pull the bent rod 28 to one side, so that the bent rod 28 pushes the plug 31 under the action of external force, so that the plug 31 can drive the N rod 30 to move along the guide groove 27. At the same time, the bent rod 28 will use external force to drive the brush plate 25 to move together, so that the brush plate 25 can drive the sponge 26 to move out of the inner cavity 24 together, so that the sponge 26 can move to the front of the end cover 10 under the guidance of the guide groove 27. The staff can apply pressure to the brush plate 25 as needed, so that the brush plate 25 drives the bent rod 28 to deform and increase the pressure of the sponge 26 on the end cover 10, so that the sponge 26 can wipe and clean the observation window on the front of the end cover 10 during the movement.

[0110] In a preferred embodiment of the present invention, the pressure storage component includes:

[0111] The base plate 37 is symmetrically fixed to the side near the fixed plate 7;

[0112] The corrugated bellows 38 is connected to the side of the base plate 37 near the fixed plate 7;

[0113] The filling cap 42 is installed at the upper end of the corrugated bladder 38;

[0114] The magnetic pressure component is connected to the bellows 38 and the pressure guide plate 18.

[0115] Specifically, the fixed plate 7 can provide stable support for the base plate 37, the base plate 37 can stably support the corrugated bladder 38, the corrugated bladder 38 can provide support for the second magnet 39, the second magnet 39 and the corrugated bladder 38 can provide storage space for cleaning fluid, the corrugated bladder 38 can be squeezed and folded under the action of external force, and the filling cap 42 can be opened by the staff to easily add cleaning fluid into the corrugated bladder 38.

[0116] Magnetic compression components include:

[0117] The support sleeve 35 is set on the outside of the pressure guide plate 18 via a connecting component;

[0118] The first magnet 36 is set through the support sleeve 35;

[0119] The second magnet 39 is fixed on the side of the corrugated bag 38 near the fixed plate 7 and is opposite in polarity to the first magnet 36.

[0120] Specifically, the first magnet 36 and the second magnet 39 are weakly magnetic magnets, and the distance between them and the air switch 9 is not less than ten centimeters to avoid magnetic field interference with the air switch 9. The support sleeve 35 is made of insulating material, and a connecting plate 34 is welded to the outside of the support sleeve 35. The connecting plate 34 is connected to the pressure guide plate 18 by bolts. The pressure guide plate 18 can provide stable support for the support sleeve 35 through the connecting plate 34. The support sleeve 35 can provide support for the first magnet 36. The positive pole of the first magnet 36 faces the direction of the support plate 15, and the positive pole of the second magnet 39 faces the direction close to the fixed plate 7. The fixed plate 7 is made of non-metallic material.

[0121] The nozzle guide includes:

[0122] The hose 40 is installed through the support plate 15, with one end passing through the bottom plate 37 and communicating with the corrugated bag 38, and the other end passing through the first spring 16 and through the support column 17.

[0123] The nozzle 41 is embedded in the end of the support column 17 and communicates with the inner cavity 24, and is connected to the other end of the hose 40.

[0124] Specifically, the hose 40 provides a channel for the cleaning fluid in the bellows 38 to enter the nozzle 41, and the nozzle 41 can spray the cleaning fluid into the inner cavity 24 under the pressure inside the hose.

[0125] In practical application, the operator can open the filling cap 42 as needed to store the cleaning fluid inside the bellows 38. Then, when the pressure guide plate 18 is moved towards the support plate 15, the pressure guide plate 18 will drive the support sleeve 35 via the connecting plate 34. The support sleeve 35 will then drive the first magnet 36 towards the support plate 15. The first magnet 36 will use the magnetic force of repulsion between like poles to push the second magnet 39 towards the support plate 15 through the fixed plate 7. This will cause the second magnet 39 to be pushed by the magnetic force... Under the action of the second magnet 39, pressure is applied to the corrugated bladder 38, causing the corrugated bladder 38 to be squeezed and folded by the second magnet 39 under the support of the support plate 15 and the bottom plate 37. In this way, the corrugated bladder 38 can use the pressure to discharge the cleaning fluid stored inside into the hose 40 during the folding process, and then let the cleaning fluid enter the nozzle 41 through the hose 40 and spray it onto the sponge 26 stored in the inner cavity 24. The sponge 26 absorbs the cleaning fluid for use when cleaning the observation window set on the end cap 10, thereby realizing the function of automatically providing cleaning fluid for cleaning work.

[0126] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An outdoor low-voltage cable branch box, comprising a branch box body and a cover rotatably disposed on the front of the branch box body, wherein two supports are symmetrically connected to the inner side of the branch box body via fixing components, and the front of the two supports are connected and fixed to each other via fixing components, with the fixed plate located below the connecting rod; a knife switch for connecting low-voltage cables is connected to the front of the connecting rod via fixing components, and the knife switch is provided with a lever for operating the knife switch; a plurality of air switches for connecting branch cables are connected to the front of the fixed plate, and the air switches are electrically connected to the knife switches; an end cap is provided on the front of the air switches, characterized in that... Also includes: The protective part is located on the outside of the end cover and cooperates with the gate arm. It includes a blocking member located on the outside of the end cover and penetrating between the fixed plate and the displacement bracket, and a guide member located below the knife switch and cooperating with the knife switch. The blocking element includes: Elastic plates are symmetrically fixed at the top and bottom ends of the fixed plate; Two baffles are symmetrically arranged on the front of the end cap and connected to the end of the elastic plate. The guide component includes: A support plate is fixed between the two brackets and located behind the fixed plate; The first spring is symmetrically arranged through the fixed plate and connected to the support plate at one end. The support is fixed to the other end of the spring; The pressure guide plate is fixed to one end of the support column and located between the two baffles. It has a gap with the fixed plate and cooperates with the baffles. The fastening components are mounted on the support plate and connected to the gate arm; The unbinding components include: A groove is formed at the end of the gate arm; A hemisphere, connected to the gate arm, is located within a groove; The guide rods are symmetrically fixed on the side of the pressure plate near the support plate; Interconnect board, connected to the outside of the guide rod; Support plate, fixed on interconnect plate; An arc-shaped inclined plate is fixed on the support plate and is located on the moving path of the hemisphere as it rotates with the gate arm; The cleaning section, connected to the delivery section, includes a suction cleaning component housed in the guide pusher and a guide adjustment component connected to the blocking component. The guide adjustment component is elastically connected to the suction cleaning component to guide the cleaning end cap to move without affecting the movement of the blocking component. The pressure spraying section penetrates the fixed plate and includes a pressure storage component located behind the fixed plate and a spray guide component that penetrates the fixed plate and the guide component. The spray guide component is in contact with the suction and wiping component, and the pressure storage component and the guide component are magnetically coupled to automatically supply cleaning fluid to the suction and wiping component.

2. The outdoor low-voltage cable branch box according to claim 1, characterized in that, The suction element includes: The inner cavity is located on the side of the pressure guide plate near the end cap; Brush plate, inside the inner cavity of the storage slot; The sponge is fixed to the side of the brush plate near the support plate.

3. The outdoor low-voltage cable branch box according to claim 2, characterized in that, The guiding component includes: The guide groove is located on the side of the baffle that is close to the elastic plate; The curved rods are symmetrically connected to one side of the brush plate; The N-bar is flexibly connected to the end of the bent bar away from the brush plate and extends into the guide groove for guidance.

4. The outdoor low-voltage cable branch box according to claim 3, characterized in that, The resilient connection includes: The slot is located at the end of the bend away from the brush plate; The plug is fixed to the end of the N rod near the bend and inserted into the slot; The second spring is located in the slot, with one end connected to the bent rod and the other end connected to the plug.

5. The outdoor low-voltage cable branch box according to claim 4, characterized in that, The pressure storage component includes: The base plate is symmetrically fixed to the side closest to the fixed plate; The bellows is connected to the side of the base plate closest to the solid plate; A filling cap is installed through the upper end of the corrugated bladder; Magnetic pressure components, connected to the bellows and pressure guide plate.

6. The outdoor low-voltage cable branch box according to claim 5, characterized in that, The magnetic compression component includes: The support sleeve is installed on the outside of the pressure guide plate via a connecting component; The first magnet is installed through the support sleeve; The second magnet is fixed on the side of the corrugated bag near the solid plate and is opposite in polarity to the first magnet.

7. The outdoor low-voltage cable branch box according to claim 6, characterized in that, The spray guide includes: The hose is designed to pass through the support plate, with one end passing through the bottom plate and connecting to the corrugated bag, and the other end passing through the first spring and the support column. The nozzle is embedded in the end of the support column, communicates with the inner cavity, and is connected to the other end of the hose.

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