Prefabricated cable channel water-blocking fireproof plugging device and use method

Abstract

The invention discloses a prefabricated cable channel water-blocking fireproof plugging device and a use method, and belongs to the technical field of cable plugging, the prefabricated cable channel water-blocking fireproof plugging device comprises a fireproof plate, a cable frame, a plugging structure, a fastener and a reserved hole, the fireproof plate is arranged in a reserved rectangular frame on a concrete wall, and the cable frame is arranged in the reserved rectangular frame; preformed holes are formed in the fireproof plate, holes are formed in the positions, corresponding to the preformed holes, of the concrete wall, and expansion bolts penetrate through the preformed holes and the holes in the concrete wall, so that the fireproof plate is fixedly connected with the concrete wall; an opening is formed in the middle of the fireproof plate, a plurality of cable frames are arranged in the opening, the cable frames are fixedly connected through fasteners, and a plurality of plugging structures are arranged in the middle of the cable frames; the first sleeve on the plugging structure is provided with the flexure ring, the inner surface of the first sleeve is attached to the cable, the flexure ring can stretch and contract along with the change of heat, the deformation of the first sleeve caused by the change of heat is avoided, and the plugging structure always closely attaches and plugs the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of cable plugging, and in particular to a prefabricated cable channel water-blocking and fire-proof plugging device and a use method thereof. Background Art

[0002] With the popularization of power systems, electric energy has become an indispensable part of people's daily lives. Cables are an important medium for power transmission. Cable safety is directly related to the stable operation of the entire power system. Therefore, the number and types of cables are increasing. Some cables need to be buried underground or installed through walls. They are prone to corrosion and damage over time, endangering power safety. At the same time, in emergency situations such as fires, if the pre-buried holes of cables are not well sealed, fire and smoke can easily spread to other areas through these holes. Cables are also easily damaged by the heat of the fire, thereby expanding the scope of the disaster. In addition, traditional cable sealing technology mainly uses solidifying sealing materials such as fireproof mud, cement, and foam. However, these materials are prone to cracking and falling off during long-term use, resulting in a decrease in the sealing effect. At the same time, the holes for cable sealing cannot be adjusted according to the size of the cable, and the versatility is poor. In addition, traditional materials require a lot of time and manpower during the construction process, and bring inconvenience to the expansion and maintenance of cables. Summary of the invention

[0003] In order to solve the deficiencies in the prior art, the present invention provides a prefabricated cable channel water-blocking and fire-proofing blocking device and a method of using the device.

[0004] The present invention adopts the following technical solution.

[0005] The first aspect of the present invention discloses a prefabricated cable channel water-blocking and fire-proofing sealing device, which comprises: a fireproof board, a cable frame, a sealing structure, a fastener and a reserved hole, wherein the fireproof board is arranged in a rectangular frame reserved on a concrete wall, a plurality of reserved holes are arranged on four sides of the fireproof board, holes are arranged on the concrete wall at positions corresponding to the reserved holes, bolts are passed through the reserved holes and the holes on the concrete wall to fix the fireproof board and the concrete wall; an opening is arranged in the middle of the fireproof board, a plurality of cable frames are arranged in the opening, the cable frames are fixed by fasteners, and a plurality of sealing structures are arranged in the middle of the cable frames; the sealing structure comprises: a cable sleeve, the cable sleeve comprises: a first sleeve and a varicose ring, a varicose ring is arranged in the middle of the first sleeve, the inner surface of the cavity of the first sleeve is fitted and sealed with the cable, the varicose ring can expand and contract with the change of heat, so as to avoid deformation of the first sleeve under the change of heat, so that the sealing structure always fits and seals the cable tightly, the two ends of the cable sleeve are engaged and connected with the clamping piece, a constraint structure is installed on the clamping piece, and the constraint structure is respectively connected with the protective sleeve one and the protective sleeve two.

[0006] Preferably, several protrusions are provided on the outer surface of the clamping part, each of which is provided with an internal thread, the outer surface of the inner cavity of the clamping part is fixedly connected to the second sleeve, the cross-section of the second sleeve is in a right angle shape, one right-angled end of the second sleeve is fixedly connected to the clamping part, and a groove is present between the second sleeve and the clamping part, the two ends of the first sleeve on the cable sleeve are engaged in the groove, an elastic part is provided on the second sleeve, and the elastic part and the first sleeve are attached to each other toward the center side, so that the gap between the second sleeve and the first sleeve is blocked, thereby improving the connection stability.

[0007] Preferably, the constraint structure is used to connect the clamping parts to the protective cover one and the protective cover two respectively, and the two clamping parts are provided with a clamping groove toward one side. The constraint structure includes: a base, a base groove is provided on the outer peripheral surface of the clamping part, the base is inside the base groove and is installed on the inner surface of the clamping part via a fastener, the middle of the base is movably connected to the guide bar, the outer surface of the guide bar is sleeved with a compression spring, the guide bar is fixedly connected to the connecting plate, and a connecting block is provided on one side of the connecting plate.

[0008] Preferably, the protective sleeve one and the protective sleeve two are arranged on the outer surface of the cable sleeve, and two card strips are symmetrically installed on one end of the protective sleeve one and the protective sleeve two, and a card interface is provided on the card strip. One end of the card strip provided with the card interface is adapted to the card groove, and the card interface is adapted to the connecting block. The card strips on the two protective sleeves can be inserted into the card groove on the card connector. When the card strips move to the deepest part of the card groove, the connecting block can be inserted into the card interface, so that the two protective sleeves are fixedly connected to the card connectors on both sides.

[0009] Preferably, the blocking structure also includes: an adjustment structure, an adjustment structure is arranged in the middle of the clamping part, the adjustment structure includes: expansion pad 2, expansion pad 2 is located between the two protective sleeves and the cable sleeve, expansion pad 1 is arranged on the side of the elastic part facing the center, expansion pad 1 is arranged on the second sleeve, expansion pad 1 and expansion pad 2 are both filled with air and the internal air is communicated through the connecting channel.

[0010] Preferably, the blocking structure further includes: an assembly structure, the assembly structure includes: a bidirectional screw, a third sleeve and a fourth sleeve, a plurality of connecting strips are arranged between the third sleeve and the fourth sleeve, and a plurality of bidirectional screws are arranged between the third sleeve and the fourth sleeve.

[0011] Preferably, a motor is arranged on the third sleeve, the action side of the motor is fixedly connected to the guide rod 1, a ratchet plate 2 is sleeved on the outer surface of the guide rod 1, the bidirectional lead screw and the clamping part are screwed together through an internal thread, and a ratchet plate 1 is arranged on the right side of the bidirectional lead screw.

[0012] Preferably, several guide rods 2 are arranged on the third sleeve, the right side of the guide rod 2 is fixedly connected to the two constraint bars, a ratchet bar is arranged between the two constraint bars, the outer surface of the ratchet bar is snap-connected with the second ratchet plate, and the inner surface of the ratchet bar is snap-connected with the first ratchet plate.

[0013] The second aspect of the present invention discloses a method for using a prefabricated cable channel water-blocking and fire-proofing sealing device, based on the prefabricated cable channel water-blocking and fire-proofing sealing device, comprising the following steps: Step 1: Reserve a rectangular frame on the concrete wall where the cable needs to pass through, and punch holes on the concrete wall corresponding to the reserved holes on the fireproof board to leave holes on the concrete wall; Step 2: Pass the cable through the blocking structure on the cable frame and tighten it; Step 3: Set the fastened cable frame in the fireproof board and fix the cable frames with fasteners.

[0014] Preferably, step 2 comprises: Step 2.1: The cable and the inside of the cable sleeve fit tightly together, and the motor is operated to rotate the ratchet disc 2, which drives the ratchet bar engaged with it to rotate, and the ratchet bar rotates the ratchet disc 1 engaged with it on the inside to rotate, and the ratchet disc 1 guides the bidirectional screw to rotate; Step 2.2: The two-way lead screw is rotated to move the connectors at the left and right ends toward the middle, so that the connectors and the two ends of the cable sleeve are automatically connected, making the connection more convenient; Step 2.3: When dismantling the device, take out the cable frame and rotate the motor in the opposite direction to move the clamping part away from the middle. The clamping part and the cable sleeve are separated, which facilitates the timely replacement and maintenance of the cable sleeve or expansion pad inside the sealing structure and improves practicality.

[0015] The beneficial effect of the present invention is that, compared with the prior art, the fireproof board of the present invention itself has a fireproof function. By fixing the fireproof board and the concrete wall, the prefabricated cable channel can be quickly overlapped and disassembled. The cable frame can be overlapped and disassembled in the fireproof board, and cable frames of different specifications can be spliced ​​inside the fireproof board according to cables of different radii, thereby improving the versatility of the device and allowing cables of different radii to be threaded and sealed through the device.

[0016] At the same time, the sealing structure of the present invention realizes the automatic quick connection between the clamping part and the cable sleeve through the assembly structure, and the internal threads on the bidirectional screw rod and the clamping part are installed by rotating the motor, which shortens the assembly time, reduces labor costs and improves efficiency.

[0017] Moreover, the present invention realizes convenient installation and removal of the two protective covers and the clamping parts through the restraining structure, and the protective cover protects the cable in the cable sleeve to prevent the cable from being damaged by being bitten or impacted by small animals. The expansion pad 2 of the present invention works in conjunction with the expansion pad 1, which not only improves the sealing and water-blocking properties of the device, but also can reduce the expansion and contraction amplitude of the varicose ring under temperature changes, thereby avoiding damage to the device caused by temperature changes and further affecting the cable, so that the device can be further sealed in the face of a fire, thereby avoiding the spread of fire and improving the safety of the cable. The connecting channel can ensure the balance of internal air pressure between the expansion pad 1 and the expansion pad 2 under temperature changes, thereby enabling the device to dynamically adjust the air pressure and avoid damage to the cable inside the varicose ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of a prefabricated cable channel water-blocking and fire-proofing plugging device in the present invention; Figure 2 is a structural diagram of the blocking structure in the present invention; Figure 3 It is a structural diagram of the protective cover 1 and the protective cover 2 in the present invention; Figure 4 It is a structural diagram of the expansion pad 2 in the present invention; Figure 5 It is a structural diagram of the cable sleeve in the present invention; Figure 6 It is a first structural diagram of the clamping member in the present invention; Figure 7 is a second structural diagram of the clamping member in the present invention; Figure 8 yes Figure 7 The enlarged view of point B in the middle; Fig. 9 It is a structural diagram of the clamping strip in the present invention; Fig.10 It is a first structural diagram of the bidirectional lead screw in the present invention; Fig.11 yes Fig.10 Enlarged view of point C in the middle; Fig.12 It is a second structural diagram of the bidirectional lead screw in the present invention; Fig.13 yes Fig.12 The enlarged view of point D in the middle; In the figure: 1, fireproof board; 2, cable frame; 3, blocking structure; 4, fastener; 5, reserved hole; 31, cable sleeve; 322, first sleeve; 323, flexure ring; 33, clamping member; 332, protrusion; 333, inner thread; 334, second sleeve; 335, elastic member; 336, clamping groove; 337, expansion pad 1; 338, base; 3382, guide strip; 3383, connecting block; 3384, compression spring; 3385, connecting plate; 34, protection Protective sleeve one; 35, protective sleeve two; 352, expansion pad two; 353, connecting channel; 36, bidirectional screw; 362, ratchet plate one; 363, constraint platform; 37, third sleeve; 372, ratchet strip; 374, motor; 375, guide rod one; 376, ratchet plate two; 377, guide rod two; 378, constraint strip; 38, connecting strip; 39, fourth sleeve; 392, guide groove; 393, support sleeve; 310, card strip; 3102, card interface. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0020] like Figure 1-Figure 13 As shown, the present invention discloses a prefabricated cable channel water-blocking and fire-proof plugging device and a method for using the device. The device comprises: a fireproof board 1, a cable frame 2, a plugging structure 3, a fastener 4 and a reserved hole 5. The fireproof board 1 has a fireproof function. The fireproof board 1 is arranged in a rectangular frame reserved on a concrete wall. The size of the fireproof board 1 is slightly larger than the rectangular frame. A plurality of reserved holes 5 are evenly arranged on the four sides of the fireproof board 1. The reserved holes 5 on the concrete wall are punched by an impact drill. Therefore, holes are arranged on the concrete wall at positions corresponding to the reserved holes 5. The expansion bolts are sequentially passed through the reserved holes 5 and the holes on the concrete wall by an electric wrench, so that the fireproof board 1 and the concrete wall are fixedly connected, thereby realizing rapid construction of a prefabricated cable channel. Preferably, sealant is applied to the overlapped portion of the fireproof board 1 and the concrete wall, and non-solidifying fireproof mud is used to level the irregular portions of the concrete wall, so that the connection between the fireproof board 1 and the concrete wall is tighter and more stable.

[0021] An opening is provided in the middle of the fireproof board 1, and a plurality of cable frames 2 are arranged in the opening in the middle of the fireproof board 1. The plurality of cable frames 2 are fixedly connected by rotating the fasteners 4 with an electric wrench. The cable frames 2 can be overlapped and disassembled in the fireproof board 1, so that cable frames 2 of different specifications can be spliced ​​inside the fireproof board 1 according to cables of different radii. A sealing structure 3 is arranged in the middle of the cable frame 2, so as to improve the versatility of the device and enable cables of different radii to be threaded and sealed through the device.

[0022] The sealing structure 3 includes: a cable sleeve 31, and the cable sleeve 31 includes: a first sleeve 322 and a flexure ring 323. The flexure ring 323 is arranged in the middle of the first sleeve 322, and the flexure ring 323 can stretch and shrink. The inner surface of the cavity of the first sleeve 322 fits and seals the cable. At the same time, the flexure ring 323 can naturally stretch and shrink with the heat change, avoiding the deformation of the first sleeve 322 caused by the heat change, preventing the sealing performance of the sealing structure 3 from being affected by the heat change, so that the sealing structure 3 always fits and seals the cable tightly.

[0023] Preferably, an insulating shielding tape is provided at the position where the cable passes through the first sleeve 322, and four-proof gel is applied to both sides of the insulating shielding tape to a distance of one and a half meters. The four-proof gel further protects the cable for waterproofing, fireproofing and corrosion resistance.

[0024] The two ends of the cable sleeve 31 are snap-connected with the clamping piece 33. The clamping piece 33 is a cylindrical structure. Three protrusions 332 are evenly arranged on the outer surface of the clamping piece 33 in the circumferential direction. The protrusions 332 and the clamping piece 33 are a whole. Each protrusion 332 is provided with a horizontal inner thread 333. At the same time, the outer surface of the inner cavity of the clamping piece 33 is fixedly connected with the second sleeve 334. The second sleeve 334 is a cylindrical structure and the cross section is a right angle. The second sleeve 334 is a right angle. One end is fixedly connected to the clamping piece 33, and there is an annular groove between the second sleeve 334 and the clamping piece 33. Both ends of the first sleeve 322 on the cable sleeve 31 are snapped into the groove. An elastic member 335 is provided on the second sleeve 334. The elastic member 335 and the first sleeve 322 are pressed against each other toward the center side, so that the gap between the second sleeve 334 and the first sleeve 322 is blocked by the elastic member 335, thereby improving the stability of the connection between the first sleeve 334 and the second sleeve 322.

[0025] Preferably, the number of the protrusions 332 on the outer surface of the clamping member 33 can be adjusted according to actual needs.

[0026] The blocking structure 3 also includes: a constraint structure, a constraint structure is installed on the clamp 33, the constraint structure is used to connect the clamp 33 with the protective sleeve 1 34 and the protective sleeve 2 35 respectively, and a groove 336 is set on the outer surface of the left and right clamps 33 facing one side, and the constraint structure includes: a base 338, a base groove is set on the outer peripheral surface of the clamp 33, the base 338 is in the base groove and is installed on the inner surface of the clamp 33 via fasteners, the middle of the base 338 is movably connected with a guide strip 3382, the outer surface of the guide strip 3382 is sleeved with a compression spring 3384, one end of the guide strip 3382 is fixedly connected to the connecting plate 3385, a connecting block 3383 is set on one side of the connecting plate 3385, and the end of the connecting block 3383 is an inclined surface.

[0027] The blocking structure 3 also includes: a protective sleeve 1 34 and a protective sleeve 2 35, which are sleeved on the outer surface of the cable sleeve 31, and one end of the protective sleeve 1 34 and the protective sleeve 2 35 are overlapped and installed closely, and the other end is symmetrically installed with two card strips 310, and one side of the end of the card strip 310 is provided with a card interface 3102, and one end of the card strip 310 provided with the card interface 3102 is adapted to the card groove 336 on the card connector 33, and the card interface 3102 is adapted to the connecting block 3383 on the card connector 33.

[0028] Preferably, the restraining structure can be configured as a detachable structure to facilitate subsequent maintenance and replacement of the blocking structure 3 .

[0029] In a specific embodiment, one end of the snap-in strip 310 on the two protective covers is inserted into the grooves 336 on both sides. The snap-in strip 310 generates pressure on the inclined surface at the end of the connecting block 3383, thereby moving the connecting plate 3385 into the base groove. When the snap-in strip 310 moves to the deepest part of the groove 336, the connecting block 3383 and the card interface 3102 are in the same plane. Through the deformation force of the compression spring 3384, one end of the connecting block 3383 is inserted into the card interface 3102, so that the snap-in component 33 and the snap-in strip 310 are snapped, and then the protective cover 1 34 and the protective cover 2 35 are fixedly connected to the snap-in component 33. The protective cover 1 34 and the protective cover 35 jointly protect the interior of the device and the cables to prevent animals from gnawing and prevent fire and water.

[0030] The blocking structure 3 also includes: an adjustment structure, an adjustment structure is arranged in the middle of the clamping parts 33 on the left and right sides, and the adjustment structure includes: an expansion pad 2 352, the expansion pad 2 352 is located between the two protective sleeves and the cable sleeve 31, the expansion pad 2 352 is sleeved on the outer surface of the cable sleeve 31, and at the same time, an expansion pad 1 337 is arranged on the central side of the elastic part 335 on the clamping part 33, and the expansion pad 1 337 is arranged on the second sleeve 334. The expansion pad 1 337 and the expansion pad 2 352 are connected by a connecting channel 353, and the expansion pad 1 337 and the expansion pad 2 352 are both filled with air and the internal air is communicated through the connecting channel 353. The connecting channel 353 can ensure the balance of internal air pressure between the expansion pad 1 337 and the expansion pad 2 352 under temperature changes, thereby enabling the device to dynamically adjust the air pressure.

[0031] The material of the expansion pad 2 352 can ensure functionality and reliability under both high and low heat conditions. The setting of the expansion pad 2 352 allows the device to resist expansion and contraction caused by excessive temperature changes. The expansion pad 2 352 is located on the outside of the varicose ring 323. The expansion pad 2 352 can reduce the expansion or contraction of the varicose ring 323 when the temperature is too high or too low, further relieve pressure and balance the device, and prevent the device from being damaged by a large deformation when the temperature is too high or too low. Therefore, the device can be deformed under fire through the cooperation of the expansion pad 1 337 and the expansion pad 2 352 to further block the cable, prevent smoke and sparks from spreading to the other side through the blocking structure 3, and suppress the spread of the fire. At the same time, the expansion pad 2 352 and the varicose ring 323 can cooperate to relieve pressure and balance the device, improve the durability of the device, prevent the device from being excessively deformed when the temperature is too high or too low, and further protect the cable.

[0032] In a specific embodiment, when the device faces an overheating situation such as a fire, the expansion pad 1 337 on the clamp 33 first expands to further seal the cable to prevent the fire from spreading and protect the cable. At the same time, the varicose ring 323 on the cable sleeve 31 deforms and expands to further seal and protect the cable. The expansion of the varicose ring 323 will compress the expansion pad 2 352, causing the air inside the expansion pad 2 352 to move into the expansion pad 1 337 through the connecting channel 353, causing the expansion pad 1 337 to expand and then fit tightly with the elastic member 335 on the central side of the first sleeve 322, further improving the sealing performance of the device and preventing the spread of fire. At the same time, the connecting channel 353 can also ensure the balance of air pressure, improve safety, protect the cable, and avoid damage to the device due to increased local force caused by temperature changes.

[0033] The blocking structure 3 also includes: an assembly structure; the assembly structure is installed on the clamping part 33, and the assembly structure includes: a bidirectional screw 36, a third sleeve 37 and a fourth sleeve 39, three connecting strips 38 are evenly arranged in the middle of the third sleeve 37 and the fourth sleeve 39, and the third sleeve 37 and the fourth sleeve 39 are fixedly connected by the connecting strips 38. At the same time, three bidirectional screws 36 are evenly arranged in the middle of the third sleeve 37 and the fourth sleeve 39.

[0034] Preferably, the number of connecting strips 38 and bidirectional lead screws 36 can be increased or decreased according to actual needs.

[0035] The motor 374 is arranged on the third sleeve 37, and the working side of the motor 374 is fixedly connected to the guide rod 1 375. A ratchet plate 2 376 is sleeved on the outer surface of the guide rod 1 375, and ratchets are evenly arranged on the outer surface of the ratchet plate 2 376. The left and right end clamping parts 33 are screwed to the two ends of the two-way screw 36 through the inner thread 333, and then the two-way screw 36 is rotated to make the clamping parts 33 on both sides move toward or away from the center, so as to realize the rapid assembly of the device. A ratchet plate 1 362 is arranged on the right side of the two-way screw 36, and ratchets are evenly arranged on the outer surface of the ratchet plate 1 362.

[0036] Several guide rods 377 are evenly arranged on the third sleeve 37 in an annular direction, and the right side of the guide rod 377 is fixedly connected to the two constraint bars 378. A ratchet bar 372 is provided between the two constraint bars 378. Ratchets are evenly arranged on the inner and outer surfaces of the ratchet bar 372, and the spacing between the ratchet teeth on the inner and outer surfaces is different. The ratchet bar 372 and the two constraint bars 378 are screwed together, and the outer surface of the outer side of the ratchet bar 372 is snap-fitted to the outer surface of the second ratchet plate 376, and the inner surface of the ratchet bar 372 is snap-fitted to the first ratchet plate 362.

[0037] The fourth sleeve 39 is provided with a guide groove 392, and the left end of the bidirectional screw 36 is installed with a constraint platform 363. The position of the guide groove 392 on the fourth sleeve 39 is fixed via a fastener and a support sleeve 393, and the left end of the bidirectional screw 36 passes through the support sleeve 393 and is screwed to the fourth sleeve 39.

[0038] The present invention also provides a method for using a prefabricated cable channel water-blocking and fire-proofing plugging device, comprising the following steps: Step 1: Reserve a rectangular frame on the concrete wall where the cable needs to pass through, and punch holes on the concrete wall corresponding to the reserved holes on the fireproof board, leaving holes on the concrete wall; Step 2: Pass the cable through the blocking structure on the cable frame and tighten it; Step 2.1: The cable and the inside of the cable sleeve fit tightly together, and the motor is operated to rotate the ratchet disc 2, which drives the ratchet bar engaged with it to rotate, and the ratchet bar rotates the ratchet disc 1 engaged with it on the inside to rotate, and the ratchet disc 1 guides the bidirectional screw to rotate; Step 2.2: The two-way lead screw is rotated to move the connectors at the left and right ends toward the middle, so that the connectors and the two ends of the cable sleeve are automatically connected, making the connection more convenient; Step 2.3: When dismantling the device, take out the cable frame and rotate the motor in the opposite direction to move the clamping part away from the middle. The clamping part and the cable sleeve are separated, which facilitates the timely replacement and maintenance of the cable sleeve or expansion pad inside the sealing structure and improves practicality.

[0039] Step 3: Place the fastened cable frame in the fireproof board, and fasten the cable frames with fasteners; The beneficial effect of the present invention is that, compared with the prior art, the fireproof board of the present invention itself has a fireproof function. By fixing the fireproof board and the concrete wall, the prefabricated cable channel can be quickly overlapped and disassembled. The cable frame can be overlapped and disassembled in the fireproof board, and cable frames of different specifications can be spliced ​​inside the fireproof board according to cables of different radii, thereby improving the versatility of the device and allowing cables of different radii to be threaded and sealed through the device.

[0040] At the same time, the sealing structure of the present invention realizes the automatic quick connection between the clamping part and the cable sleeve through the assembly structure, and the internal threads on the bidirectional screw rod and the clamping part are installed by rotating the motor, which shortens the assembly time, reduces labor costs and improves efficiency.

[0041] Moreover, the present invention realizes convenient installation and removal of the two protective covers and the clamping parts through the restraining structure, and the protective cover protects the cable in the cable sleeve to prevent the cable from being damaged by being bitten or impacted by small animals. The expansion pad 2 of the present invention works in conjunction with the expansion pad 1, which not only improves the sealing and water-blocking properties of the device, but also can reduce the expansion and contraction amplitude of the varicose ring under temperature changes, thereby avoiding damage to the device caused by temperature changes and further affecting the cable, so that the device can be further sealed in the face of a fire, thereby avoiding the spread of fire and improving the safety of the cable. The connecting channel can ensure the balance of internal air pressure between the expansion pad 1 and the expansion pad 2 under temperature changes, thereby enabling the device to dynamically adjust the air pressure and avoid damage to the cable inside the varicose ring.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A prefabricated cable channel water-blocking and fire-proof blocking device, comprising: The fireproof board (1), the cable frame (2), the blocking structure (3), the fastener (4) and the reserved hole (5) are characterized by: The fireproof board (1) is arranged in a rectangular frame reserved on a concrete wall; a plurality of reserved holes (5) are arranged on four sides of the fireproof board (1); holes are arranged on the concrete wall at positions corresponding to the reserved holes (5); bolts are passed through the reserved holes (5) and the holes on the concrete wall to securely connect the fireproof board (1) and the concrete wall; an opening is arranged in the middle of the fireproof board (1); a plurality of cable frames (2) are arranged in the opening; the cable frames (2) are secured by fasteners (4); and a plurality of blocking structures (3) are arranged in the middle of the cable frames (2); The blocking structure (3) comprises: a cable sleeve (31), the cable sleeve (31) comprising: a first sleeve (322) and a varicose ring (323), the varicose ring (323) being arranged in the middle of the first sleeve (322), the inner surface of the cavity of the first sleeve (322) being fitted and blocked with the cable, the varicose ring (323) being able to expand and contract with changes in heat, thereby avoiding deformation of the first sleeve (322) under changes in heat, so that the blocking structure (3) always closely fits and blocks the cable, the two ends of the cable sleeve (31) being snap-fitted and connected with the clamping piece (33), the clamping piece (33) being mounted with a restraining structure, and the restraining structure being respectively connected with the first protective sleeve (34) and the second protective sleeve (35).

2. A prefabricated cable channel water-blocking and fire-proofing blocking device as claimed in claim 1, characterized in that: The outer surface of the clamping member (33) is provided with a plurality of protrusions (332), each protrusion (332) is provided with an inner thread (333), the inner cavity outer surface of the clamping member (33) is fixedly connected to the second sleeve (334), the cross section of the second sleeve (334) is in a right angle shape, one right-angle end of the second sleeve (334) is fixedly connected to the clamping member (33), a groove is provided between the second sleeve (334) and the clamping member (33), both ends of the first sleeve (322) on the cable sleeve (31) are engaged in the groove, an elastic member (335) is provided on the second sleeve (334), the elastic member (335) and the first sleeve (322) are attached to each other toward the central side, so that the gap between the second sleeve (334) and the first sleeve (322) is blocked, thereby improving the connection stability.

3. A prefabricated cable channel water-blocking and fire-proofing blocking device as claimed in claim 1, characterized in that: The restraining structure is used to connect the clamping member (33) to the protective sleeve 1 (34) and the protective sleeve 2 (35) respectively. The two clamping members (33) are provided with a clamping groove (336) toward one side. The restraining structure comprises: a base (338). The outer peripheral surface of the clamping member (33) is provided with a base groove. The base (338) is located in the base groove and is installed on the inner surface of the clamping member (33) via a fastener. The middle of the base (338) is movably connected to the guide bar (3382). The outer surface of the guide bar (3382) is sleeved with a compression spring (3384). The guide bar (3382) is fixedly connected to the connecting plate (3385). A connecting block (3383) is provided on one side of the connecting plate (3385).

4. A prefabricated cable channel water-blocking and fire-proofing blocking device as claimed in claim 1, characterized in that: The protective sleeve 1 (34) and the protective sleeve 2 (35) are sleeved on the outer surface of the cable sleeve (31); two clamping strips (310) are symmetrically installed on one end of the protective sleeve 1 (34) and the protective sleeve 2 (35); a clamping interface (3102) is provided on the clamping strip (310); one end of the clamping strip (310) provided with the clamping interface (3102) is matched with the clamping groove (336); the clamping interface (3102) is matched with the connecting block (3383); the clamping strips (310) on the two protective sleeves can be inserted into the clamping groove (336) on the clamping piece (33); when the clamping strips (310) move to the deepest part of the clamping groove (336), the connecting block (3383) can be inserted into the clamping interface (3102), so that the two protective sleeves are fixedly connected to the clamping pieces (33) on both sides.

5. A prefabricated cable channel water-blocking and fire-proofing blocking device as claimed in claim 1, characterized in that: The blocking structure (3) further comprises: an adjustment structure, wherein the adjustment structure is arranged in the middle of the clamping member (33), and the adjustment structure comprises: an expansion pad 2 (352), wherein the expansion pad 2 (352) is arranged between the two protective sleeves and the cable sleeve (31), and an expansion pad 1 (337) is arranged on the elastic member (335) toward the central side, and the expansion pad 1 (337) is arranged on the second sleeve (334), and air is filled inside the expansion pad 1 (337) and the expansion pad 2 (352), and the air inside is communicated through the connecting channel (353).

6. A prefabricated cable channel water-blocking and fire-proofing plugging device as claimed in claim 1, characterized in that: The blocking structure (3) further comprises: an assembly structure, the assembly structure comprising: a bidirectional lead screw (36), a third sleeve (37) and a fourth sleeve (39), a plurality of connecting strips (38) being arranged between the third sleeve (37) and the fourth sleeve (39), and a plurality of bidirectional lead screws (36) being arranged between the third sleeve (37) and the fourth sleeve (39).

7. A prefabricated cable channel water-blocking and fire-proofing blocking device as claimed in claim 6, characterized in that: A motor (374) is disposed on the third sleeve (37), the action side of the motor (374) is fixedly connected to the guide rod (375), a ratchet disc (376) is sleeved on the outer surface of the guide rod (375), the bidirectional lead screw (36) and the clamping member (33) are screwed together via an inner thread (333), and a ratchet disc (362) is disposed on the right side of the bidirectional lead screw (36).

8. A prefabricated cable channel water-blocking and fire-proofing plugging device as claimed in claim 6, characterized in that: The third sleeve (37) is provided with a plurality of guide rods (377) on the right side of the guide rod (377) being fixedly connected to two constraint bars (378). A ratchet bar (372) is provided between the two constraint bars (378). The outer surface of the ratchet bar (372) is snap-fitted to the second ratchet plate (376), and the inner surface of the ratchet bar (372) is snap-fitted to the first ratchet plate (362).

9. A method for using a prefabricated cable channel water-blocking and fire-proofing plugging device, based on a prefabricated cable channel water-blocking and fire-proofing plugging device according to any one of claims 1 to 8, characterized in that: Step 1: reserve a rectangular frame on the concrete wall where the cable needs to pass, and punch holes on the concrete wall corresponding to the reserved holes (5) on the fireproof board (1) so that holes are left on the concrete wall; Step 2: Pass the cable through the blocking structure (3) on the cable frame (2) and tighten it; Step 3: The fastened cable frame (2) is arranged in the fireproof board (1), and the cable frames (2) are fixedly connected by fasteners (4).

10. A method for using the prefabricated cable channel water-blocking and fire-proofing plugging device as claimed in claim 9, characterized in that: Step 2 includes: Step 2.1: The cable and the cable sleeve (31) fit tightly together, and the motor (374) is operated to rotate the second ratchet disc (376). The second ratchet disc (376) drives the ratchet bar (373) engaged therewith to rotate. The rotation of the ratchet bar (373) causes the first ratchet disc (362) engaged therewith to rotate. The first ratchet disc (362) guides the bidirectional lead screw (36) to rotate. Step 2.2: The two-way lead screw (36) is rotated to move the clamping parts (33) at the left and right ends toward the middle direction, so that the clamping parts (33) and the two ends of the cable sleeve (31) are automatically connected, making the connection more convenient; Step 2.3: When dismantling the device, take out the cable frame (2), rotate the motor (374) in the opposite direction to move the clamping member (33) away from the middle, and separate the clamping member (33) and the cable sleeve (31), so as to facilitate the timely replacement and maintenance of the cable sleeve (31) or the expansion pad inside the sealing structure (3), thereby improving practicality.

Images