Cable fast-assembling junction box for rail transit and components thereof

Abstract

The invention relates to the technical field of cable distribution boxes and discloses a cable fast-assembly distribution box for rail transit and a component thereof, the component comprises a sleeve, a plurality of arc-shaped plates are arranged on the two sides of the sleeve at equal intervals in a surrounding and sleeving mode, magnets are fixedly installed at the two ends of each arc-shaped plate, and the magnetic pole directions of the adjacent magnets are opposite. The multiple arc-shaped plates are fixedly connected through attraction between the magnets. When the plugging head is mounted, external dust and impurities can be prevented from falling on the sleeve coated with silicone grease through a space formed by the arc-shaped sleeve, the arc-shaped plate and the shielding component, and dust prevention protection can be performed on the sleeve in cooperation with airflow blown outwards; through cooperation of the rotating assembly, the cylinder, the rotating shaft and the pressing plate, the part, making contact with the arc-shaped plate, of the shielding component is pressed, so that the situation that the part, making contact with the arc-shaped plate, of the shielding component is blown away by wind during operation in a strong wind area is avoided, and the dustproof effect on the sleeve is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of cable junction boxes, and in particular relates to a quick-assembly cable junction box for rail transit and components thereof. Background Art

[0002] The cable junction box is also called the cable branch box. It is used as a cable branch. The main function of the cable branch box is to branch or transfer the cables. It mainly plays the role of cable branching and cable transfer.

[0003] When using the existing cable junction box, when connecting the plug head to the sleeve, it is necessary to apply silicone grease to the cleaned sleeve and then connect the plug head to the sleeve. However, during the entire installation process, the sleeve is exposed to the outside and will be attached by dust and impurities in the outside air, thereby affecting the use after installation.

[0004] Therefore, it is necessary to invent a rail transit cable quick-install junction box and its components to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides a rail transit cable quick-assembly distribution box and components thereof to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a component of a rail transit cable quick-install distribution box, comprising a sleeve, a plurality of arc-shaped plates are equidistantly sleeved on both sides of the sleeve, magnets are fixedly installed at both ends of the arc-shaped plates, the magnetic poles of adjacent magnets are in opposite directions, and the plurality of arc-shaped plates are fixedly connected by adsorption between the magnets, an arc-shaped sleeve is provided on the outer side of the arc-shaped plate, a slide groove is provided on the outer side of the arc-shaped plate, a slider is slidably installed in the slide groove, the slider is fixedly connected to the arc-shaped sleeve, a push rod is fixedly installed on the side of the slider away from the sleeve, a spring is sleeved on the outer side of the push rod, the two ends of the spring are respectively fixedly connected to the inner wall of the slide groove and the slider, a limiting component for limiting the position of the push rod is provided on the outer side of the push rod, and both sides of the arc-shaped sleeve Each of the arc sleeves is provided with an accommodating port, a shielding member is provided between adjacent accommodating ports, two ends of the shielding member are respectively fixedly connected to the inner walls of the adjacent accommodating ports, a plurality of arc sleeves are commonly threadedly connected to a closing cover at one end away from the arc plate, a scraper is fixedly installed at the middle of the inner wall of the arc sleeve, a cavity is provided inside the scraper, a plurality of spray holes are provided on the side of the scraper close to the sleeve, an injection assembly for injecting silicone grease into the cavity is provided on the outside of the arc sleeve, a blowing assembly for blowing air into the space formed by the unfolded arc sleeve and the shielding member is provided on the inside of the sleeve, an annular groove is provided on the outside of the sleeve, a push-in groove connected to the annular groove is provided on the side of the sleeve close to the closing cover, and a limit block cooperating with the annular groove and matching the push-in groove is fixedly installed on one of the arc plates.

[0007] Furthermore, the injection assembly includes an extrusion airbag fixedly mounted on the outside of the arc sleeve, an injection port is provided on the outside of the extrusion airbag, a plunger is threadedly connected to the injection port, the interior of the extrusion airbag is filled with silicone grease, one side of the extrusion airbag is connected to the interior of the scraper through a conduit, and a one-way valve is provided inside the conduit.

[0008] Furthermore, the limiting assembly includes a baffle arranged on the outside of the arc plate, the baffle is arranged in an arc shape, the outer side of the arc plate is symmetrically provided with a limiting opening, the inner side of the baffle is provided with a limiting plate cooperating with the limiting opening, the limiting plate is slidably arranged in the limiting opening, and the baffle is in conflict with the top rod.

[0009] Furthermore, the blowing assembly includes an annular cavity arranged inside the sleeve, and circular holes connected to the annular cavity are equidistantly formed on one side of the sleeve close to the arc sleeve, and the circular holes are blocked by the arc sleeve. A channel connected to the annular cavity is formed on the outer side of the sleeve, and a port of the channel is provided with a thread, and a connecting pipe is connected to the inner thread of the port of the channel, one end of the connecting pipe is connected to an electric air pump through a hose, a filter is provided at the suction end of the electric air pump, and a carrier is fixedly installed on the top of the electric air pump.

[0010] Furthermore, a side plate is symmetrically fixedly installed on the outer side of the arc plate, a rotating shaft is rotatably installed on the inner side of the side plate, an external fixed sleeve of the rotating shaft is provided with a cylinder, a pressure plate is fixedly installed on the outer side of the cylinder, one end of the rotating shaft passes through the side plate sleeve and is provided with a torsion spring, both ends of the torsion spring are respectively fixedly connected to the side plate and the rotating shaft, and a rotating component for driving the cylinder to rotate is provided on the outside.

[0011] Furthermore, the rotating assembly includes a long groove opened on the side of the baffle close to the cylinder, the length of the long groove is two-thirds of the width of the baffle, and a rubber gasket is sleeved on the outside of the cylinder, and the baffle can interfere with the rubber gasket.

[0012] Furthermore, the shielding member is a dust filter cloth, and one side of the shielding member is in contact with the sleeve and the arc plate.

[0013] A rail transit cable quick-assembly junction box comprises the components of the rail transit cable quick-assembly junction box and the junction box as described above, wherein the components of the rail transit cable quick-assembly junction box are arranged inside the junction box.

[0014] Technical effects and advantages of the present invention: 1. When installing the plug head, the space formed by the arc sleeve, the arc plate and the shielding member can prevent dust and impurities from the outside from falling on the sleeve after the silicone grease is applied, and the air flow blown outward can be used to protect the sleeve from dust; 2. The present invention presses down the part where the shielding member contacts the arc plate by cooperating with the rotating assembly, the cylinder, the rotating shaft and the pressure plate, so that when operating in a windy area, the wind will not blow away the part where the shielding member contacts the arc plate, thereby ensuring the dustproof effect of the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a junction box according to an embodiment of the present invention is shown; Figure 2 A schematic structural diagram showing a component combination of a junction box and a rail transit cable quick-assembly junction box according to an embodiment of the present invention; Figure 3 A cross-sectional structural schematic diagram showing a component combination of a junction box and a rail transit cable quick-assembly junction box according to an embodiment of the present invention; Figure 4 The embodiment of the present invention is shown Figure 3 The enlarged structural diagram at A in the middle; Figure 5 The embodiment of the present invention is shown Figure 4 The enlarged structural diagram at B in the middle; Figure 6 A schematic structural diagram showing components of a rail transit cable quick-assembly junction box according to an embodiment of the present invention; Figure 7 The embodiment of the present invention is shown Figure 6 Enlarged structural diagram at point C in the middle.

[0016] In the figure: 1. sleeve; 2. curved plate; 3. curved sleeve; 4. slider; 5. spring; 6. push rod; 7. shielding member; 8. extrusion airbag; 9. scraper; 10. catheter; 11. magnet; 12. limit block; 13. push-in groove; 14. baffle; 15. limit plate; 16. round hole; 17. channel; 18. electric air pump; 19. carrier block; 20. filter; 21. hose; 22. side plate; 23. cylinder; 24. pressure plate; 25. torsion spring; 26. long groove; 27. junction box; 28. closing cover. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0018] The present invention provides a component of a rail transit cable quick-assembly distribution box, such as Figures 1 to 7As shown, it includes a sleeve 1, and a plurality of arc-shaped plates 2 are equidistantly sleeved on both sides of the sleeve 1, and magnets 11 are fixedly installed at both ends of the arc-shaped plates 2, and the magnetic poles of adjacent magnets 11 are in opposite directions, and the plurality of arc-shaped plates 2 are fixedly connected by adsorption between the magnets 11, and an arc-shaped sleeve 3 is provided on the outer side of the arc-shaped plate 2, and a slide groove is provided on the outer side of the arc-shaped plate 2, and a slider 4 is slidably installed in the slide groove, and the slider 4 is fixedly connected to the arc-shaped sleeve 3, and a push rod 6 is fixedly installed on the side of the slider 4 away from the sleeve 1, and a spring 5 is sleeved on the outside of the push rod 6, and the two ends of the spring 5 are respectively fixedly connected to the inner wall of the slide groove and the slider 4, and a limiting component for limiting the push rod 6 is provided on the outside of the push rod 6, and accommodating openings are provided on both sides of the arc-shaped sleeve 3, and a shielding member 7 is provided between adjacent accommodating openings, and the two ends of the shielding member 7 are respectively fixedly connected to the inner walls of the adjacent accommodating openings, and the ends of the plurality of arc-shaped sleeves 3 away from the arc-shaped plate 2 are commonly threadedly connected with a closed A cover 28, a scraper 9 is fixedly installed in the middle of the inner wall of the arc sleeve 3, a cavity is provided inside the scraper 9, a plurality of spray holes are provided on the side of the scraper 9 close to the sleeve 1, an injection assembly for injecting silicone grease into the cavity is provided on the outside of the arc sleeve 3, a blowing assembly is provided inside the sleeve 1 for blowing air into the space formed by the unfolded arc sleeve 3 and the shielding member 7, an annular groove is provided on the outside of the sleeve 1, a push-in groove 13 connected to the annular groove is provided on the side of the sleeve 1 close to the closing cover 28, a limit block 12 which cooperates with the annular groove and matches the push-in groove 13 is fixedly installed on one of the arc plates 2, when multiple arc plates 2, arc sleeves 3 and closing covers 28 are combined into a whole, the limit block 12 on the whole is pushed into the push-in groove 13, and then enters the annular groove, and then the whole is rotated so that the limit block 12 and the push-in groove 13 are staggered and move along the annular groove, thereby realizing the assembly between the whole and the sleeve 1.

[0019] When it is necessary to install the plug head outside the sleeve 1, silicone grease is injected into the cavity through the injection assembly, and then the silicone grease is sprayed on the outside of the sleeve 1 through the spray hole. At this time, the arc plate 2 is rotated to rotate with the slider 4, the arc sleeve 3, and the scraper 9, so that the silicone grease is evenly spread on the outside of the sleeve 1. After the smearing is completed, the restriction of the limit assembly on the push rod 6 is cancelled, and the stretched and deformed spring 5 releases the force to pull the slider 4 and the arc sleeve 3 in the direction away from the sleeve 1, so that the part of the sleeve 1 that contacts the plug head leaks out. With the separation of multiple arc sleeves 3, they are separated from the closing cover 28 at this time, and the multiple arc sleeves 3 are separated from each other, and the shielding member 7 is pulled open. Finally, the multiple arc sleeves 3, the arc plate 2, and the shielding member 7 jointly wrap the sleeve 1 inside. At this time, the blowing assembly is cooperated to blow air, and the generated airflow moves from the sleeve 1 in the direction away from the sleeve 1, so as to prevent external dust and impurities from entering the arc sleeve 3 and the arc sleeve 3. In the space formed by the arc sleeve 3, the arc plate 2 and the shielding member 7, the space formed by the arc sleeve 3, the arc plate 2 and the shielding member 7 can prevent external dust and impurities from falling on the sleeve 1 after the silicone grease is applied, and the sleeve 1 can be protected from dust by cooperating with the airflow blown outward, and then the plug head is inserted into the sleeve 1 for installation, and the blowing assembly is stopped when the plug head enters the space formed by the arc sleeve 3, the arc plate 2 and the shielding member 7, and then the installation is carried out, so that during the entire installation process, no external dust will adhere to the outside of the sleeve 1, thereby ensuring the cleanliness of the sleeve 1. After the installation is completed, the shielding member 7 is cut open with scissors to lose the connection between adjacent arc sleeves 3, and then the arc plate 2 is pulled to separate them from each other and leave the sleeve 1. Since the sleeve 1 is initially located in the arc sleeve 3 and the closing cover 28, there is no need to clean the sleeve 1 during installation, so that the installation speed can be improved.

[0020] like Figures 4 to 5 As shown, the injection assembly includes an extrusion airbag 8 fixedly mounted on the outside of the arc sleeve 3, an injection port is provided on the outside of the extrusion airbag 8, a plunger is threadedly connected to the injection port, the interior of the extrusion airbag 8 is filled with silicone grease, one side of the extrusion airbag 8 is connected to the interior of the scraper 9 through a conduit 10, and a one-way valve is provided inside the conduit 10.

[0021] The squeezing airbag 8 is squeezed to squeeze the internal silicone grease outwards, and the silicone grease enters the cavity after pushing open the one-way valve through the catheter 10, and then is sprayed out of the sleeve 1 through the spray hole.

[0022] like Figure 4 and Figure 6 As shown, the limiting assembly includes a baffle 14 arranged on the outside of the arc plate 2, the baffle 14 is arranged in an arc shape, the outer side of the arc plate 2 is symmetrically provided with a limiting opening, the inner side of the baffle 14 is provided with a limiting plate 15 that cooperates with the limiting opening, the limiting plate 15 is slidably arranged in the limiting opening, and the baffle 14 is in conflict with the top rod 6.

[0023] Pull the blocking piece 14 to move it toward the closing cover 28 so that the blocking piece 14 leaves the ejector rod 6 , thereby canceling the restriction on the ejector rod 6 .

[0024] like Figures 3 to 6 As shown, the blowing assembly includes an annular cavity arranged inside the sleeve 1, and circular holes 16 connected to the annular cavity are equidistantly arranged on one side of the sleeve 1 close to the arc sleeve 3, and the circular holes 16 are blocked by the arc sleeve 3. A channel 17 connected to the annular cavity is opened on the outer side of the sleeve 1, and a thread is provided at the port of the channel 17. The internal thread of the port of the channel 17 is connected to a connecting pipe, and one end of the connecting pipe is connected to an electric air pump 18 through a hose 21. A filter screen 20 is provided at the suction end of the electric air pump 18, and a carrier block 19 is fixedly installed on the top of the electric air pump 18.

[0025] Start the electric air pump 18 to draw in external air. After being filtered by the filter 20, the air passes through the hose 21, the channel 17, and the annular cavity and is ejected from the circular hole 16, so that air is blown into the space formed by the arc sleeve 3, the arc plate 2, and the shielding member 7 to prevent external dust and impurities from entering the space formed by the arc sleeve 3, the arc plate 2, and the shielding member 7. The joint pipe is rotated and separated from the channel 17, and the joint pipe is connected to the channel 17 on the other sleeve 1, so that air can be blown when installing the other sleeve 1 and the plug head.

[0026] like Figure 6 and Figure 7 As shown, the outer side of the arc plate 2 is symmetrically fixedly installed with a side plate 22, the inner side of the side plate 22 is rotatably installed with a rotating shaft, the outer side of the rotating shaft is fixedly sleeved with a cylinder 23, the outer side of the cylinder 23 is fixedly installed with a pressure plate 24, one end of the rotating shaft passes through the side plate 22 and is sleeved with a torsion spring 25, the two ends of the torsion spring 25 are respectively fixedly connected to the side plate 22 and the rotating shaft, and the outside of the cylinder 23 is provided with a rotating component for driving it to rotate.

[0027] When the wind is strong in the installation area, after the shielding member 7 is unfolded, the wind will blow away the part where the shielding member 7 and the arc plate 2 are in contact, causing dust to enter the space formed by the arc sleeve 3, the arc plate 2, and the shielding member 7, and contaminate the sleeve 1. Therefore, after the shielding member 7 is unfolded, the rotating assembly cooperates with the cylinder 23 and the shaft to rotate, thereby driving the pressure plate 24 to move toward the shielding member 7, and finally the pressure plate 24 presses the part where the shielding member 7 and the arc plate 2 are in contact. During the rotation of the shaft, the torsion spring 25 is twisted and deformed, and by pressing the part where the shielding member 7 and the arc plate 2 are in contact, when working in a windy area, the wind will not blow away the part where the shielding member 7 and the arc plate 2 are in contact, thereby ensuring the dustproof effect of the sleeve 1.

[0028] like Figure 7As shown, the rotating assembly includes a long groove 26 opened on the side of the baffle 14 close to the cylinder 23. The length of the long groove 26 is two-thirds of the width of the baffle 14. The outer sleeve of the cylinder 23 is provided with a rubber gasket, and the baffle 14 can contact the rubber gasket.

[0029] Pull the baffle 14 to make it move in the direction close to the closing cover 28. At this time, due to the existence of the long groove 26, the baffle 14 will not contact the rubber gasket, and the cylinder 23 is stationary at this time. When the baffle 14 leaves the top rod 6, as the baffle 14 continues to be pulled, the baffle 14 contacts the rubber gasket, so that the friction force drives the cylinder 23 and the pressure plate 24 to rotate, so that the pressure plate 24 cooperates with the arc plate 2 to press the shielding member 7. When the pressing needs to be canceled, continue to pull the baffle 14, so that the baffle 14 and the rubber gasket slide relative to each other, and finally the baffle 14 separates from the arc plate 2. At this time, the torsion spring 25 releases its force to restore the rotating shaft, the cylinder 23, and the pressure plate 24 to leave the shielding member 7.

[0030] like Figure 6 As shown, the shielding member 7 is a dust filter cloth, and one side of the shielding member 7 is in contact with the sleeve 1 and the arc plate 2.

[0031] The shielding member 7 can isolate dust and impurities from the outside.

[0032] A rail transit cable quick-assembly junction box comprises the components of the rail transit cable quick-assembly junction box and a junction box 27 , wherein the components of the rail transit cable quick-assembly junction box are arranged inside the junction box 27 .

[0033] The bushing 1 is fixed inside the junction box 27 by bolts. The top wall of the junction box 27 is provided with a track for the carrier block 19 to slide. The carrier block 19 is slidably arranged in the track.

[0034] Working principle: when the plug head needs to be installed outside the sleeve 1, silicone grease is injected into the cavity through the injection assembly, and then the silicone grease is sprayed on the outside of the sleeve 1 through the spray hole. At this time, the arc plate 2 is rotated to rotate with the slider 4, the arc sleeve 3, and the scraper 9, so that the silicone grease is evenly spread on the outside of the sleeve 1. After the coating is completed, the baffle 14 is pulled to move toward the direction close to the closing cover 28, so that the baffle 14 leaves the push rod 6, so that the restriction on the push rod 6 is cancelled, and the stretched and deformed spring 5 releases the force to pull the slider 4 and the arc sleeve 3 in the direction away from the sleeve 1, so that the part of the sleeve 1 that contacts the plug head leaks out, and with the separation of multiple arc sleeves 3, it is separated from the closing cover 28 at this time, and the multiple arc sleeves 3 are separated from each other, pulling the shielding member 7 open. Finally, multiple arc sleeves 3, arc plates 2, and shielding components 7 wrap the sleeve 1 together, start the electric air pump 18 to draw in external air, and after the air is filtered by the filter 20, it passes through the hose 21, the channel 17, and the annular cavity and then sprays out from the circular hole 16, so that air is blown into the space formed by the arc sleeve 3, the arc plate 2, and the shielding component 7 to prevent external dust and impurities from entering the space formed by the arc sleeve 3, the arc plate 2, and the shielding component 7. The space formed by the arc sleeve 3, the arc plate 2, and the shielding component 7 can prevent external dust and impurities from falling on the sleeve 1 coated with silicone grease, and cooperate with the airflow blown outward to protect the sleeve 1 from dust. Then, the plug head is inserted into the sleeve 1 for installation, and the pull head enters the arc sleeve 3, When the shielding member 7 is in the space formed by the arc plate 2 and the shielding member 7, the electric air pump 18 is stopped, and then the installation is carried out, so that during the entire installation process, no external dust will adhere to the outside of the sleeve 1, and the sleeve 1 is ensured to be clean. After the installation is completed, the shielding member 7 is cut open with scissors to make the adjacent arc sleeves 3 lose connection, and then the arc plate 2 is pulled to separate them from each other and leave the sleeve 1; when the installation area is windy, after the shielding member 7 is unfolded, the wind will blow away the part of the shielding member 7 that is in contact with the arc plate 2, so that dust enters the space formed by the arc sleeve 3, the arc plate 2, and the shielding member 7, and pollutes the sleeve 1. Therefore, after the shielding member 7 is unfolded, as the blocking piece 14 continues to be pulled, the blocking piece 14 and the rubber pad at this time The circles are in contact, so that the friction force drives the cylinder 23 and the pressure plate 24 to rotate, so that the pressure plate 24 cooperates with the arc plate 2 to press the shielding member 7, and finally the pressure plate 24 presses the part of the shielding member 7 that contacts with the arc plate 2. During the rotation of the shaft, the torsion spring 25 is twisted and deformed, and by pressing the part of the shielding member 7 that contacts with the arc plate 2, when working in a windy area, the wind will not blow away the part of the shielding member 7 that is in contact with the arc plate 2, thereby ensuring the dust-proof effect of the sleeve 1. When it is necessary to cancel the pressing, continue to pull the baffle 14, so that the baffle 14 and the rubber gasket slide relative to each other, and finally the baffle 14 is separated from the arc plate 2. At this time, the torsion spring 25 releases its force to restore the rotating shaft, the cylinder 23, and the pressure plate 24 to leave the shielding member 7.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A component of a rail transit cable quick-assembly junction box, comprising a sleeve (1), characterized in that: A plurality of arc-shaped plates (2) are equidistantly arranged around both sides of the sleeve (1), magnets (11) are fixedly mounted at both ends of the arc-shaped plates (2), the magnetic poles of adjacent magnets (11) are in opposite directions, and the plurality of arc-shaped plates (2) are fixedly connected to each other by adsorption between the magnets (11), an arc-shaped sleeve (3) is arranged on the outer side of the arc-shaped plate (2), a slide groove is arranged on the outer side of the arc-shaped plate (2), a slider (4) is slidably mounted in the slide groove, the slider (4) is fixedly connected to the arc-shaped sleeve (3), a push rod (6) is fixedly mounted on the side of the slider (4) away from the sleeve (1), a spring (5) is arranged on the outer side of the push rod (6), the two ends of the spring (5) are respectively fixedly connected to the inner wall of the slide groove and the slider (4), a limiting component for limiting the push rod (6) is arranged on the outer side of the push rod (6), and a receiving opening is arranged on both sides of the arc-shaped sleeve (3), and a spring (5) is fixedly mounted on the outer side of the push rod (6), the two ends of the spring (5) are respectively fixedly connected to the inner wall of the slide groove and the slider (4), and a limiting component for limiting the push rod (6) is arranged on the outer side of the push rod (6), and a receiving opening is arranged between adjacent receiving openings. A shielding member (7), wherein both ends of the shielding member (7) are respectively fixedly connected to the inner wall of the adjacent accommodating opening, a plurality of arc sleeves (3) are threadedly connected to a closing cover (28) at one end away from the arc plate (2), a scraper (9) is fixedly mounted in the middle of the inner wall of the arc sleeve (3), a cavity is arranged inside the scraper (9), a plurality of spray holes are arranged on the side of the scraper (9) close to the sleeve (1), an injection assembly for injecting silicone grease into the cavity is arranged outside the arc sleeve (3), a blowing assembly for blowing air into the space formed by the unfolded arc sleeve (3) and the shielding member (7) is arranged inside the sleeve (1), an annular groove is arranged outside the sleeve (1), a push-in groove (13) connected to the annular groove is opened on the side of the sleeve (1) close to the closing cover (28), and a limit block (12) cooperating with the annular groove and matching with the push-in groove (13) is fixedly mounted on one of the arc plates (2).

2. The component of the rail transit cable quick assembly junction box according to claim 1 is characterized in that: The injection assembly comprises an extrusion airbag (8) fixedly mounted on the outside of the arc-shaped sleeve (3); an injection port is provided on the outside of the extrusion airbag (8); a plunger is threadedly connected to the injection port; the interior of the extrusion airbag (8) is filled with silicone grease; one side of the extrusion airbag (8) is connected to the interior of the scraper (9) via a conduit (10); a one-way valve is provided inside the conduit (10).

3. The component of the rail transit cable quick assembly junction box according to claim 2 is characterized in that: The limiting assembly comprises a blocking piece (14) arranged on the outside of the arc plate (2), the blocking piece (14) being arranged in an arc shape, a limiting opening being symmetrically arranged on the outside of the arc plate (2), a limiting plate (15) cooperating with the limiting opening being arranged on the inside of the blocking piece (14), the limiting plate (15) being slidably arranged in the limiting opening, and the blocking piece (14) being in contact with the top rod (6).

4. The component of the rail transit cable quick assembly junction box according to claim 3 is characterized in that: The blowing assembly comprises an annular cavity arranged inside the sleeve (1), and circular holes (16) communicating with the annular cavity are equidistantly arranged on one side of the sleeve (1) close to the arc sleeve (3), and the circular holes (16) are blocked by the arc sleeve (3). The outer side of the sleeve (1) is provided with a channel (17) communicating with the annular cavity, and the port of the channel (17) is provided with a thread, and the port of the channel (17) is connected to a joint pipe through the inner thread, and one end of the joint pipe is connected to an electric air pump (18) through a hose (21), and a filter screen (20) is provided at the suction end of the electric air pump (18), and a carrier block (19) is fixedly installed on the top of the electric air pump (18).

5. The component of the rail transit cable quick assembly junction box according to claim 4, characterized in that: A side plate (22) is symmetrically fixedly mounted on the outer side of the arc-shaped plate (2), a rotating shaft is rotatably mounted on the inner side of the side plate (22), a cylinder (23) is fixedly sleeved on the outer side of the rotating shaft, a pressure plate (24) is fixedly mounted on the outer side of the cylinder (23), one end of the rotating shaft passes through the side plate (22) and is sleeved with a torsion spring (25), two ends of the torsion spring (25) are respectively fixedly connected to the side plate (22) and the rotating shaft, and a rotating component for driving the cylinder (23) to rotate is provided on the outer side.

6. The component of the rail transit cable quick assembly junction box according to claim 5, characterized in that: The rotating assembly comprises a long groove (26) formed on a side of the baffle (14) close to the cylinder (23); the length of the long groove (26) is two-thirds of the width of the baffle (14); a rubber gasket is sleeved on the outside of the cylinder (23), and the baffle (14) can contact the rubber gasket.

7. The component of the rail transit cable quick assembly junction box according to claim 6, characterized in that: The shielding component (7) is a dust filter cloth, and one side of the shielding component (7) is in contact with the sleeve (1) and the arc-shaped plate (2).

8. A cable quick-assembly distribution box for rail transit, characterized in that: It comprises the components of the rail transit cable quick assembly junction box and the junction box (27) as described in claim 7, wherein the components of the rail transit cable quick assembly junction box are arranged inside the junction box (27).

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