Bus access sealing sleeve for distribution box

Abstract

The invention provides a bus access sealing sleeve for a distribution box, and relates to the technical field of sealing sleeves, the bus access sealing sleeve comprises a sealing assembly, the sealing assembly comprises a combined sleeve, the inner wall of the combined sleeve is fixedly provided with a filling air bag through a fixing block, the filling air bag is in a roll shape, one end of the filling air bag is fixedly connected with the fixing block, and the other end of the filling air bag is fixedly connected with the sealing assembly. The other end of the filling air bag is fixedly connected with a filling block, and the filling block and the inner wall of the filling air bag jointly wrap the cable. After the fixing frame is arranged, the two sets of first semicircular sleeves and second semicircular sleeves are inserted into the combination grooves from the two sides respectively and combined into the combined sleeve, compared with the mode that a cable integrally and manually penetrates through the sealing sleeve, the combined sleeve is arranged in a combined mode, the cable at the position needing to be sealed can be directly installed, and the sealing efficiency is improved. Cables do not need to penetrate in sequence, and the installation process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing bushings, in particular to a busbar inlet and outlet sealing bushing for a distribution box. Background Art

[0002] After the distribution box is installed, the busbar and cable need to be extended separately. There will be a certain space at the extension point. If a sealing sleeve is not used, external dust or rainwater will enter the electrical box, which will cause electrical hazards. For example, patent announcement number CN220358768U is a flexible cable sealing sleeve, which includes an electrical cabinet. Two fixed columns are fixedly connected to the interior of the electrical cabinet, a mounting plate is placed on the inner bottom wall of the electrical cabinet, and a sealing sleeve body is fixedly connected to the top of the mounting plate. A cable is arranged inside the sealing sleeve body.

[0003] However, during the use of the above-mentioned sealing sleeve, since the cable has a certain length, the operator needs to manually insert the cable into the sealing sleeve, which results in frequent insertion when multiple cables are installed, and the efficiency of installing the sealing sleeve is generally low, affecting the overall installation time. For this reason, the present application designs a busbar inlet and outlet sealing sleeve for a distribution box, which can quickly install sealing sleeves on the outside of multiple cables after the cables and the distribution box are installed. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a busbar inlet and outlet sealing sleeve for a distribution box, which solves the problem of poor efficiency caused by the need for manual threading of existing cables when they are installed in the sealing sleeve.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A busbar inlet and outlet sealing sleeve for a distribution box includes a sealing assembly, the sealing assembly includes a combined sleeve, the inner wall of the combined sleeve is fixedly installed with a filling airbag through a fixing block, the filling airbag is arranged in a roll shape, one end of the filling airbag is fixedly connected to the fixing block, and the other end of the filling airbag is fixedly connected to the filling block, and the filling block and the inner wall of the filling airbag jointly cover the cable.

[0006] Preferably, a fixed frame is installed on the outside of several of the combination sleeves, and the fixed frame is used to be installed in the hollow part of the distribution box. Several support rings are provided on the surface of the fixed frame, and a combination groove is opened on the inner wall of each support ring. Each of the combination sleeves is respectively arranged inside the corresponding combination groove.

[0007] Preferably, the fixing frame is a combination of two plates, and a filling piece for sealing is provided on the outer periphery of the fixing frame.

[0008] Preferably, each of the combined sleeves is a combination of two groups of first semicircular sleeves and second semicircular sleeves, an assembly groove is provided on the outer surface of the combined sleeve, and a sealing rubber ring is provided on the outer side of the assembly groove.

[0009] Preferably, each group of the first semicircular sleeve and the second semicircular sleeve are slidingly connected, an adjusting screw hole is opened inside the first semicircular sleeve, a rotating groove is opened inside the second semicircular sleeve, an adjusting bolt is rotatably installed inside the rotating groove, and the adjusting bolt is threadedly engaged with the adjusting screw hole.

[0010] Preferably, an inflation groove is provided inside the filling airbag, exchange tubes are provided at the outermost ends of the filling airbag respectively, the exchange tubes are communicated with the inflation groove, an adhesive tape is provided in the middle of the surface of the filling airbag, and sealing strips are provided on both sides of the adhesive tape respectively.

[0011] Preferably, docking holes are provided at both ends of the sealing rubber ring, and through-holes are provided at both ends of the combined sleeve, and the exchange tube extends through the through-holes into the docking holes.

[0012] Preferably, a series channel is opened inside the fixed frame, a docking seat is provided on the inner wall of the series channel, the docking seat extends into the docking hole and is connected to the exchange pipe, an intake channel and an exhaust channel are opened at both ends of the series channel respectively, and a ventilation component is installed inside the intake channel and the exhaust channel.

[0013] Preferably, the ventilation assembly includes a first sealing seat and a second sealing seat, and the first sealing seat and the second sealing seat are fixedly installed inside the intake channel and the exhaust channel respectively; A first piston and a second piston are installed in the intake passage and the exhaust passage respectively through a first spring and a second spring, and a pressing plate is connected to the outer side of the second piston through a connecting rod.

[0014] Preferably, a docking groove is provided on one side of the fixed frame, a plurality of inflation channels are provided inside the first piston, a first screw sleeve is fixedly installed at the outer end of the inflation channel, and the inner end of the inflation channel is sealed with the first sealing seat; A second screw sleeve is threadedly mounted on the outer side of the first screw sleeve, an air filling pipe for connecting to an air pump is fixedly mounted on the outer end of the second screw sleeve, and a limiting plate is fixedly mounted on the outer side of the second screw sleeve.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. After the fixed frame is set, the two groups of first semicircular sleeves and second semicircular sleeves are respectively inserted into the combined grooves from both sides and combined into a combined sleeve. Compared with the manual insertion of the cable through the sealing sleeve as a whole, the present application utilizes the combined sleeve as a combined setting, which can directly install the cable at the required sealing position without passing the cables one by one, thereby reducing the installation process. After the assembly is completed, the adjusting bolt can be rotated by a wrench to make the adjusting bolt and the adjusting screw hole thread cooperate. Under this cooperation, the distance between the current group of first semicircular sleeves and second semicircular sleeves will be reduced. Under this reduction, a sealing rubber ring is provided on the outer side of the assembly groove, so that the assembly groove is reduced and the sealing rubber ring is squeezed, so that the sealing rubber ring is expanded outward to realize the sealing setting of the combined sleeve in the corresponding combination groove, which not only speeds up the installation speed but also strengthens the sealing of the combination to avoid leakage at the cable of the distribution box.

[0016] 2. When gas enters the exchange tube, the gas will fill the inflation tank, and the volume of the filled airbag will increase accordingly. During the increase process, the rolled-up filled airbag can be adhered to each other by adhesive tape to improve the overall stability. After the filling is completed, sealing strips are provided on both sides of the adhesive tape so that adjacent sealing strips cooperate with each other to avoid leakage at the connection of the rolled-up filled airbag.

[0017] 3. Each filling airbag is connected to the adjacent series channel through an exchange tube, so that each filling airbag can be connected in series. In this series connection, multiple filling airbags can be expanded by filling gas to achieve simultaneous sealing and fixation of multiple cables. The same applies during disassembly, so that the present application can quickly seal and fix multiple cables. Compared with inflating a single filling airbag in turn, the present application can reduce the installation and disassembly time.

[0018] 4. During inflation, the second screw sleeve is threadedly engaged with the first screw sleeve. Continuous engagement will cause the first screw sleeve to move outward, and a limit plate can be used to ensure that the first screw sleeve will not shrink inward during subsequent inflation. The inflation tube is then connected to an external air pump. As the air pump is started, gas will enter the inflation tube and be distributed to several inflation channels, enabling gas to enter from the air inlet channel. By connecting the air inlet channel with the series channel, each series channel can deliver gas to ensure that each filled airbag will inflate. After completion, the second screw sleeve is released from the threaded engagement with the first screw sleeve, and then the first piston is reset under the action of the first spring, so that the first sealing seat blocks the inflation channel, thereby maintaining the gas filling inside the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the top structure of the present invention; Figure 3 yes Figure 2 Schematic diagram of the cross-section structure at AA in the middle; Figure 4 yes Figure 2 Schematic diagram of the cross-section structure at the middle BB; Figure 5 It is a schematic diagram of the three-dimensional structure of the fixed frame; Figure 6 It is a schematic diagram of the top view of the fixed frame; Figure 7 yes Figure 6 Schematic diagram of the cross-section structure at CC Figure 8 yes Figure 7 A schematic diagram of the structure is enlarged in the middle; Figure 9 yes Figure 6 Schematic diagram of the cross-section structure at DD; Figure 10 It is a schematic diagram of the three-dimensional structure of the sealing component; Figure 11 1 is a schematic diagram of the front view structure of the sealing component; Figure 12 yes Figure 11 Schematic diagram of the cross-section structure at EE; Figure 13 yes Figure 11 Schematic diagram of the cross-sectional structure at FF in the middle.

[0020] Figure: 1, fixed frame; 2, support ring; 3, sealing assembly; 301, combined sleeve; 3011, assembly groove; 3012, adjusting screw hole; 3013, adjusting bolt; 3014, through hole; 3015, rotating groove; 3016, first semicircular sleeve; 3017, second semicircular sleeve; 302, filling airbag; 3021, filling block; 3022, fixing block; 3023, sealing strip; 3024, adhesive tape; 3025, inflation groove; 3026, exchange tube; 303, sealing rubber ring; 3031, docking hole ; 4. Ventilation assembly; 401. First sealing seat; 4011. First piston; 4012. First spring; 4013. Inflation channel; 4014. First sleeve; 402. Second sealing seat; 4021. Connecting rod; 4022. Second spring; 4023. Pressing plate; 4024. Second piston; 403. Second sleeve; 4031. Limiting plate; 4032. Inflation tube; 404. Docking groove; 5. Filling piece; 6. Combination groove; 7. Series channel; 8. Docking seat; 9. Intake channel; 10. Exhaust channel. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1 to 13 As shown, a busbar inlet and outlet sealing bushing for a distribution box includes a sealing component 3, The sealing assembly 3 includes a combined sleeve 301, and a filling airbag 302 is fixedly installed on the inner wall of the combined sleeve 301 through a fixed block 3022. The filling airbag 302 is arranged in a roll shape, and one end of the filling airbag 302 is fixedly connected to the fixed block 3022, and the other end of the filling airbag 302 is fixedly connected to the filling block 3021. The filling block 3021 and the inner wall of the filling airbag 302 jointly cover the cable.

[0023] In this embodiment, a fixed frame 1 is commonly installed on the outside of several combination sleeves 301. The fixed frame 1 is used to be installed in the hollow part of the distribution box. Several support rings 2 are arranged on the surface of the fixed frame 1. A combination groove 6 is opened on the inner wall of each support ring 2. Each combination sleeve 301 is respectively arranged inside the corresponding combination groove 6.

[0024] The fixing frame 1 is composed of two plates, and a filling piece 5 for sealing is provided on the outer periphery of the fixing frame 1 .

[0025] After the cable is extended, the fixing frame 1 can be assembled on both sides of the cable by combining two panels using the fixing frame 1, which can block the hollow part of the distribution box, and the distribution box and the fixing frame 1 can be sealed by the filling piece 5 to improve the overall sealing.

[0026] Each combined sleeve 301 is composed of two groups of first semicircular sleeves 3016 and second semicircular sleeves 3017 . An assembly groove 3011 is provided on the outer surface of the combined sleeve 301 , and a sealing rubber ring 303 is provided on the outer side of the assembly groove 3011 .

[0027] It should be noted that each set of first semicircular sleeves 3016 and second semicircular sleeves 3017 are slidingly connected, an adjusting screw hole 3012 is opened inside the first semicircular sleeve 3016, and a rotating groove 3015 is opened inside the second semicircular sleeve 3017. An adjusting bolt 3013 is rotatably installed inside the rotating groove 3015, and the adjusting bolt 3013 is threadedly engaged with the adjusting screw hole 3012.

[0028] After the fixed frame 1 is set, the two groups of first semicircular sleeves 3016 and second semicircular sleeves 3017 are respectively inserted into the combined groove 6 from both sides and combined into a combined sleeve 301. Compared with the manual insertion of the cable through the sealing sleeve as a whole, the present application utilizes the combined sleeve 301 as a combined setting, which can directly install the cable at the required sealing point without passing the cables one by one, thereby reducing the installation process. After the assembly is completed, the adjusting bolt 3013 can be rotated by a wrench to make the adjusting bolt 3013 threadedly engaged with the adjusting screw hole 3012. Under this engagement, the distance between the current group of first semicircular sleeves 3016 and second semicircular sleeves 3017 is reduced. Under this reduction, a sealing rubber ring 303 is provided on the outside of the assembly groove 3011, so that the assembly groove 3011 is reduced and the sealing rubber ring 303 is squeezed, so that the sealing rubber ring 303 is expanded outward to realize the sealing setting of the combined sleeve 301 in the corresponding combined groove 6, which not only speeds up the installation speed but also strengthens the sealing of the combination to avoid leakage at the cable of the distribution box.

[0029] In the present application, an inflation groove 3025 is provided inside the filling airbag 302, and exchange tubes 3026 are respectively provided at the outermost ends of the filling airbag 302. The exchange tube 3026 is interconnected with the inflation groove 3025. An adhesive tape 3024 is provided in the middle of the surface of the filling airbag 302, and sealing strips 3023 are respectively provided on both sides of the adhesive tape 3024.

[0030] When gas enters the exchange tube 3026, the gas will fill the inflation groove 3025, and the volume of the filling airbag 302 will increase accordingly. During the increase process, the rolled-up filling airbag 302 can be adhered to each other by the adhesive tape 3024 to improve the overall stability. After the filling is completed, sealing strips 3023 are respectively provided on both sides of the adhesive tape 3024, so that adjacent sealing strips 3023 cooperate with each other to avoid leakage at the connection of the rolled-up filling airbag 302. The filling airbag 302 can adapt to the number and size of the current internal cables to achieve a corresponding degree of sealing.

[0031] It should be noted that two ends of the sealing rubber ring 303 are provided with docking holes 3031 , and two ends of the combined sleeve 301 are provided with through holes 3014 . The exchange tube 3026 passes through the through holes 3014 and extends into the docking holes 3031 .

[0032] In the specific setting, a series channel 7 is opened inside the fixed frame 1, and a docking seat 8 is set on the inner wall of the series channel 7. The docking seat 8 extends into the docking hole 3031 and is connected to the exchange tube 3026. An intake channel 9 and an exhaust channel 10 are respectively opened at both ends of the series channel 7, and a ventilation component 4 is installed inside the intake channel 9 and the exhaust channel 10.

[0033] Each filling airbag 302 is connected to the adjacent series channel 7 by using the exchange tube 3026, so that each filling airbag 302 can be connected in series. In this series connection, multiple filling airbags 302 can be expanded by filling gas to achieve simultaneous sealing and fixation of multiple cables. The same applies during disassembly, so that the present application can quickly seal and fix multiple cables. Compared with inflating a single filling airbag 302 in turn, the present application can reduce the installation and disassembly time.

[0034] In this embodiment, the ventilation assembly 4 includes a first sealing seat 401 and a second sealing seat 402, which are fixedly mounted inside the intake passage 9 and the exhaust passage 10 respectively; A first piston 4011 and a second piston 4024 are installed in the intake passage 9 and the exhaust passage 10 respectively through a first spring 4012 and a second spring 4022 . The outer side of the second piston 4024 is connected to a pressing plate 4023 through a connecting rod 4021 .

[0035] When it is necessary to disassemble this application, the second piston 4024 is moved by pressing the pressing plate 4023, thereby releasing the sealing cooperation between the second piston 4024 and the second sealing seat 402, wherein the internal gas of the filling airbag 302 will leak out to the exhaust channel 10, thereby achieving rapid exhaust. After exhaust, the internal gas of the filling airbag 302 is reduced, so that the filling airbag 302 releases the sealing fixation of the current cable, and subsequent disassembly operations can be carried out.

[0036] In the present application, a docking groove 404 is provided on one side of the fixed frame 1, a plurality of inflation channels 4013 are provided inside the first piston 4011, a first screw sleeve 4014 is fixedly installed at the outer end of the inflation channel 4013, and the inner end of the inflation channel 4013 is sealed with the first sealing seat 401; The second screw sleeve 403 is threadedly mounted on the outer side of the first screw sleeve 4014 . An air filling tube 4032 for connecting to an air pump is fixedly mounted on the outer end of the second screw sleeve 403 . A limit plate 4031 is fixedly mounted on the outer side of the second screw sleeve 403 .

[0037] During inflation, the second screw sleeve 403 is threadedly engaged with the first screw sleeve 4014. Under continuous engagement, the first screw sleeve 4014 will move outward, and the limiting plate 4031 can be used to ensure that the first screw sleeve 4014 will not shrink inward during subsequent inflation. Then the inflation tube 4032 is connected to the external air pump. As the air pump starts, gas will enter the inflation tube 4032 and be distributed to several inflation channels 4013, allowing gas to enter from the air inlet channel 9. The air inlet channel 9 is connected to the series channel 7 to ensure that each series channel 7 can transport gas to ensure that each filled air bag 302 will inflate. After completion, the second screw sleeve 403 and the first screw sleeve 4014 are released to obtain threaded engagement, and then the first piston 4011 is reset under the action of the first spring 4012, so that the first sealing seat 401 blocks the inflation channel 4013, thereby maintaining the gas filling inside this application.

[0038] The working principle of the busbar inlet and outlet sealing bushing for distribution box: When in use, first straighten the distribution box cable and pull it out. After the cable is extended, the fixing frame 1 can be assembled on both sides of the cable by combining two panels of the fixing frame 1 to block the hollow part of the distribution box, and the filling piece 5 can be used to seal the distribution box and the fixing frame 1. After that, install several combined sleeves 301 as needed. After the fixed frame 1 is set, insert the two sets of first semicircular sleeves 3016 and second semicircular sleeves 3017 into the combined grooves 6 from both sides to form a combined sleeve 301. Then, use a wrench to rotate the adjusting bolts 3013 so that the sealing rubber rings 303 expand outwards to achieve a sealed installation of the combined sleeves 301 in the corresponding combined grooves 6. Finally, inflation is performed. During inflation, the second screw sleeve 403 is threadedly engaged with the first screw sleeve 4014. Under continuous engagement, the first screw sleeve 4014 will move outward, and the limiting plate 4031 can be used to ensure that the first screw sleeve 4014 will not shrink inward during subsequent inflation. Then the inflation tube 4032 is connected to the external air pump. As the air pump is started, the gas will enter the inflation tube 4032 and be distributed to several inflation channels 4013, realizing the entry of gas from the air inlet channel 9. The air inlet channel 9 is connected to the series channel 7 to ensure that each series channel 7 can transport gas to ensure that each filling air bag 302 will inflate, thereby realizing the sealing and fixation of the cable.

[0039] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A busbar inlet and outlet sealing bushing for a distribution box, comprising a sealing assembly (3), characterized in that: The sealing assembly (3) comprises a combined sleeve (301), a filling airbag (302) being fixedly mounted on the inner wall of the combined sleeve (301) via a fixing block (3022), the filling airbag (302) being arranged in a roll shape, one end of the filling airbag (302) being fixedly connected to the fixing block (3022), and the other end of the filling airbag (302) being fixedly connected to a filling block (3021), the filling block (3021) and the inner wall of the filling airbag (302) jointly covering the cable.

2. The busbar inlet and outlet sealing bushing for a distribution box according to claim 1, characterized in that: A fixed frame (1) is commonly installed on the outside of the plurality of combined bushings (301), and the fixed frame (1) is used to be installed in the hollowed-out portion of the distribution box. A plurality of support rings (2) are provided on the surface of the fixed frame (1), and a combined groove (6) is provided on the inner wall of each support ring (2). Each combined bushing (301) is respectively arranged inside the corresponding combined groove (6).

3. The busbar inlet and outlet sealing bushing for a distribution box according to claim 2, characterized in that: The fixed frame (1) is a combination of two plate members, and a filling sheet (5) for sealing is provided on the outer periphery of the fixed frame (1).

4. The busbar inlet and outlet sealing bushing for a distribution box according to claim 2, characterized in that: Each of the combined sleeves (301) is a combination of two groups of first semicircular sleeves (3016) and second semicircular sleeves (3017). An assembly groove (3011) is provided on the outer surface of the combined sleeve (301), and a sealing rubber ring (303) is provided on the outer side of the assembly groove (3011).

5. The busbar inlet and outlet sealing bushing for a distribution box according to claim 4, characterized in that: Each group of the first semicircular sleeve (3016) and the second semicircular sleeve (3017) are slidably connected. An adjusting screw hole (3012) is provided inside the first semicircular sleeve (3016), and a rotating groove (3015) is provided inside the second semicircular sleeve (3017). An adjusting bolt (3013) is rotatably installed inside the rotating groove (3015), and the adjusting bolt (3013) is threadedly engaged with the adjusting screw hole (3012).

6. The busbar inlet and outlet sealing bushing for a distribution box according to claim 1, characterized in that: An inflation groove (3025) is provided inside the filling airbag (302), and exchange tubes (3026) are respectively provided at the outermost ends of the filling airbag (302), and the exchange tubes (3026) are interconnected with the inflation groove (3025). An adhesive tape (3024) is provided in the middle of the surface of the filling airbag (302), and sealing strips (3023) are respectively provided on both sides of the adhesive tape (3024).

7. The busbar inlet and outlet sealing bushing for a distribution box according to claim 6, characterized in that: The sealing rubber ring (303) is provided with docking holes (3031) at both ends, the combined sleeve (301) is provided with through holes (3014) at both ends, and the exchange tube (3026) passes through the through holes (3014) and extends into the docking holes (3031).

8. The busbar inlet and outlet sealing bushing for a distribution box according to claim 6, characterized in that: A series channel (7) is provided inside the fixed frame (1), a docking seat (8) is provided on the inner wall of the series channel (7), the docking seat (8) extends into the docking hole (3031) and is connected to the exchange tube (3026), an air intake channel (9) and an air exhaust channel (10) are provided at both ends of the series channel (7), and a ventilation assembly (4) is installed inside the air intake channel (9) and the air exhaust channel (10).

9. The busbar inlet and outlet sealing bushing for a distribution box according to claim 8, characterized in that: The ventilation assembly (4) comprises a first sealing seat (401) and a second sealing seat (402), wherein the first sealing seat (401) and the second sealing seat (402) are fixedly mounted inside the air intake channel (9) and the air exhaust channel (10), respectively; A first piston (4011) and a second piston (4024) are respectively installed inside the intake channel (9) and the exhaust channel (10) via a first spring (4012) and a second spring (4022), and the outer side of the second piston (4024) is connected to a pressing plate (4023) via a connecting rod (4021).

10. The busbar inlet and outlet sealing bushing for a distribution box according to claim 8, characterized in that: A docking groove (404) is provided on one side of the fixed frame (1), a plurality of inflation channels (4013) are provided inside the first piston (4011), a first screw sleeve (4014) is fixedly mounted at the outer end of the inflation channel (4013), and the inner end of the inflation channel (4013) is sealed with the first sealing seat (401); A second screw sleeve (403) is threadedly mounted on the outer side of the first screw sleeve (4014), an air filling tube (4032) for connecting to an air pump is fixedly mounted on the outer end of the second screw sleeve (403), and a limiting plate (4031) is fixedly mounted on the outer side of the second screw sleeve (403).

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