CN209917118U - Portable subregion wisdom fire control unit in tunnel based on BIM technique - Google Patents

Portable subregion wisdom fire control unit in tunnel based on BIM technique Download PDF

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Publication number
CN209917118U
CN209917118U CN201920338368.7U CN201920338368U CN209917118U CN 209917118 U CN209917118 U CN 209917118U CN 201920338368 U CN201920338368 U CN 201920338368U CN 209917118 U CN209917118 U CN 209917118U
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China
Prior art keywords
ring
groove
tunnel
line
accommodating
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Expired - Fee Related
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CN201920338368.7U
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Chinese (zh)
Inventor
程实
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Jiangsu Jianwei Construction Management Co Ltd
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Jiangsu Jianwei Construction Management Co Ltd
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Priority to CN201920338368.7U priority Critical patent/CN209917118U/en
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Abstract

The utility model discloses a tunnel movable type partitioned intelligent fire fighting device based on BIM technology, which relates to the field of tunnel intelligent fire fighting and aims at preventing a telescopic pipeline from being damaged in the using process, and comprises a working module arranged in a tunnel, a plurality of water supply points arranged in the tunnel, the telescopic pipeline arranged between the working module and the water supply points, a placing cavity arranged at the water supply points in the tunnel, a line receiving and releasing roller arranged in the placing cavity and sliding along the length direction of the placing cavity, a line containing spiral ring groove arranged on the peripheral wall of the line receiving and releasing roller and used for containing the telescopic pipeline, a pipe outlet penetrating the middle part of the placing cavity and facing one side of the working module, a rotating component arranged in the placing cavity and used for driving the line receiving and releasing roller to rotate and a feeding component arranged in the placing cavity and used for driving the line receiving and releasing roller to slide, the telescopic pipeline is protected from being damaged, and the purpose of ensuring normal water supply is achieved.

Description

Portable subregion wisdom fire control unit in tunnel based on BIM technique
Technical Field
The utility model relates to a tunnel wisdom fire control field, more specifically say, it relates to a portable subregion wisdom fire control unit in tunnel based on BIM technique.
Background
Along with the development of the society, the BIM technology becomes an important technical support for intelligent traffic information construction, a tunnel mobile partition intelligent fire fighting device based on the BIM technology is constructed, a tunnel Building Information Model (BIM) is introduced into the tunnel mobile partition intelligent fire fighting device, and the visualization, digitization and intelligent levels of tunnel fire fighting can be improved.
The prior Chinese patent with the publication number of CN206979888U discloses a tunnel mobile type partitioned intelligent fire-fighting device based on the BIM technology, which comprises a mobile control module, an automatic spray head module, an illumination and monitoring probe module and a smoke and fire detector module, wherein the automatic spray head module, the illumination and monitoring probe module and the smoke and fire detector module are connected with the mobile control module; still include scalable pipeline, pressure device, fire control water supply point, wireless communication module, BIM wisdom fire control work platform, the work track, overhaul the track, scalable pipeline links to each other with automatic shower nozzle module and pressure device respectively, pressure device is connected with fire control water supply point, mobile control module moves in work track and overhaul the track, mobile control module adopts wireless transmission to be connected with wireless communication module, wireless communication module is connected with BIM wisdom fire control work platform and is formed the portable subregion wisdom fire control work closed loop in tunnel.
However, in the working processes of the mobile control module, the automatic spray head module, the illumination and monitoring probe module, the smoke and fire detector module and the like connected with the mobile control module, and the fire-fighting water supply point, the protection of the telescopic pipeline is very important, otherwise, the telescopic pipeline is easily damaged in the telescopic process of the telescopic pipeline, and the water supply is not timely.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a portable subregion wisdom fire control unit in tunnel based on BIM technique through winding the flexible pipeline individual layer in the appearance line spiral annular of receiving and releasing line runner roll, has avoided the mutual extrusion between the flexible pipeline to the protection flexible pipeline does not receive the damage, ensures the normal clear of supplying water.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a portable subregion wisdom fire control unit in tunnel based on BIM technique, including setting up the work module in the tunnel, a plurality of water supply points of setting in the tunnel and set up the flexible pipeline between work module and water supply point, still including setting up the chamber of placing that is located water supply point department in the tunnel, the setting is being placed the intracavity and is following the receipts and releases line runner roll of placing chamber length direction and sliding, the setting is used for holding flexible pipeline's appearance line spiral annular on receiving and releasing line runner roll perisporium, run through the setting and is placing the mouth of pipe that holds chamber middle part orientation work module one side, the setting is being used for driving in placing the intracavity and receives the rotating assembly of unwrapping wire runner roll pivoted and setting is being placed the feeding subassembly that the intracavity is used for driving receipts and releases the line runner.
Through taking above-mentioned technical scheme, flexible pipeline individual layer winding is in the appearance line spiral annular groove on receiving and releasing line changes the roller, flexible pipeline can not extrude each other, the wearing and tearing of flexible pipeline have been avoided, and simultaneously, when needs receive and release flexible pipeline, start runner assembly and feeding subassembly simultaneously, make receive and release line change the roller and change the rotation, when releasing flexible pipeline from appearance line spiral annular groove, send flexible pipeline to exit tube mouth department at the end that breaks away from of appearance line spiral annular groove department, make between the flexible pipeline that breaks away from send out from the mouth of pipe straight, avoid flexible pipeline to receive and place the grinding pressure that holds the chamber wall, play the purpose of protection flexible pipeline, and simultaneously, flexible pipeline is difficult for knoing, and it is more convenient to use.
The utility model discloses a further set up as, the subassembly of feeding is including setting up the slip rail of holding chamber length direction extension along placing on holding chamber length direction chamber wall, slide and set up the shifting board on the rail that slides, set up the support gangbar between shifting board and the rail back of the body end wall of the slip back of the body and receive and release line revolving roller, set up and keep away from shifting board one end and with receive and release line revolving roller rotation connection's go-between, set up at shifting board and the linking tooth that slides on the rail wall of the back of the body, set up and holding servo motor one of intracavity and set up at a servo motor drive end and with the drive gear of linking tooth meshing, the go-between sets up and keeps away from the end wall department of holding line spiral annular at receive and release line revolving roller.
Through taking above-mentioned technical scheme, servo motor rotates, drives drive gear and linkage tooth meshing, and then the board that slides on the rail that slides, simultaneously, can drive receipts and releases line live-rollers and holding the intracavity along placing the length direction removal that holds the chamber through supporting gangbar and go-between, and the go-between rotates with receipts and releases line live-rollers simultaneously and is connected, when playing the connection effect, can not influence the rotation of receipts and releases line live-rollers.
The utility model discloses a further set up to, the runner assembly is including setting up on the cell wall that connects ring groove and notch relative and along a plurality of spacing tooth's sockets that connect ring groove ring footpath orientation to extend, with the link ring of spacing tooth's socket joint, set up and keep away from at the link ring and connect ring groove one side along the mounting panel that link ring footpath extended and set up on the slide and the drive end is located link ring heart department fixed connection's servo motor two with the mounting panel at receiving and releasing line revolving roller length direction one end.
Through taking above-mentioned technical scheme, servo motor two rotates, drives the link ring rotation through the mounting panel, because link ring and spacing tooth's socket joint, consequently under the limiting displacement of link ring and spacing tooth's socket, the link ring card is in connecting the ring inslot, and then the link ring can drive the receipts and releases line and change the roller rotation.
The utility model discloses a further set up to, the one end that the go-between was kept away from to receive and release line runner roll is rotated and is provided with the support ring, be provided with balanced bracing piece between support ring and the sliding plate, the support ring sets up the end wall department of holding line spiral annular of keeping away from receiving and releasing line runner roll.
Through adopting above-mentioned technical scheme, together with the go-between, can further play the supporting role to receiving and releasing line rotor, go-between and support ring are located the both ends of receiving and releasing line rotor simultaneously, and then make balanced bracing piece and support that the interlock pole supports more even to the holding power of receiving and releasing line rotor.
The utility model discloses a further set up to, place and hold the chamber including the holding wide groove that is used for holding the receipts and releases line that the winding has flexible pipeline and changes the roller and be used for holding the receiving narrow groove that the receipts and releases line that does not have flexible pipeline changes the roller, the mouth of pipe sets up the link at holding wide groove and holding narrow groove.
By adopting the technical scheme, the accommodating cavity can be prevented from occupying too much space, so that the use space in the tunnel is more reasonable, and the installation of other components is facilitated.
The utility model discloses a further set up to, be provided with the spacing spout of direction that extends to the junction department of holding wide trough and holding narrow trough along holding narrow trough length direction in the holding narrow trough, receive and release the line and change the roller towards holding narrow trough one end and be provided with the connection rotary column, be provided with direction limit slide on the perisporium of connecting the rotary column.
Through taking above-mentioned technical scheme, receive and release the line and change the roller at the in-process that slides, direction limiting slide blocks slides in the spacing spout of direction, and then can make receive and release the line and change the roller and steadily slide, and simultaneously, connect the rotary column and receive and release the line and change the roller rotation and be connected, can not influence the rotation of receiving and releasing the line and change the roller, and the spacing spout of direction extends to the link end department of holding broad groove and holding narrow groove, can be when flexible pipeline receives the holding line spiral ring inslot completely, the one end that receives and releases the line and change the roller and be located flexible pipeline's play water end can just align with the outlet pipe, avoid flexible pipeline to take place.
The utility model discloses a further set up to, all be provided with the drag reduction spin on the interior rampart of support ring and go-between.
By adopting the technical scheme, in the rotating process of the take-up and pay-off rotating roller, the friction form between the support ring and the connecting ring as well as the take-up and pay-off rotating roller is converted into rolling friction by sliding friction, so that the friction force between the support ring and the connecting ring as well as the take-up and pay-off rotating roller is reduced, and the influence on the rotation of the take-up and pay-off rotating roller is avoided.
The utility model discloses a further set up to, the notch edge department of appearance line spiral annular is provided with the abrasionproof arc angle.
By adopting the technical scheme, when the telescopic pipeline is wound and placed in the line accommodating spiral ring groove, the abrasion of the edge at the groove opening of the line accommodating spiral ring groove on the telescopic pipeline is avoided.
To sum up, the utility model discloses following beneficial effect has:
1. the utility model winds the telescopic pipelines in the line-accommodating spiral ring groove on the take-up and pay-off roller in a single layer, the telescopic pipelines can not be extruded mutually, and the abrasion of the telescopic pipelines is avoided;
2. the utility model discloses an adjust servo motor one and servo motor two's rotational speed, make receive and release line and change the roller and change the rotation and follow the interior release of appearance line spiral annular with flexible pipeline when, send flexible pipeline to exit tube mouth department at the end that breaks away from of appearance line spiral annular department, make between the flexible pipeline that breaks away from the straight seeing-off of mouth of pipe, avoid flexible pipeline to receive and place the grinding pressure that holds the chamber wall, play the purpose of protection flexible pipeline.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partial sectional view of a take-up and pay-off line roller structure according to the present invention.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is an enlarged view at B in fig. 2.
Fig. 5 is a schematic diagram of a drag-reducing rolling ball structure according to the present invention.
Reference numerals: 1. a working module; 2. a water supply point; 3. a telescopic pipeline; 4. placing a cavity; 5. a take-up and pay-off roller; 6. a line-containing spiral ring groove; 7. an outlet pipe orifice; 8. a rotating assembly; 9. a feeding assembly; 10. sliding the rail; 11. a slide plate; 12. supporting the linkage rod; 13. a connecting ring; 14. a linkage tooth; 15. a first servo motor; 16. a drive gear; 17. a connecting circular groove; 18. a limiting tooth socket; 19. a link ring; 20. mounting a plate; 21. a servo motor II; 22. a support ring; 23. balancing the supporting rod; 24. a wide accommodating groove; 25. a narrow accommodating groove; 26. a guide limit chute; 27. a guide limit slide block; 28. a drag-reducing rolling ball; 29. preventing arc angles from being abraded; 30. and connecting the rotary column.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
the utility model discloses a tunnel movable type partitioned intelligent fire fighting device based on BIM technology, which comprises a working module 1 arranged in a tunnel, a plurality of water supply points 2 arranged in the tunnel, a telescopic pipeline 3 arranged between the working module 1 and the water supply points 2, a placing cavity 4 arranged in the tunnel and positioned at the water supply points 2, a line receiving and releasing rotating roller 5 arranged in the placing cavity 4 and sliding along the length direction of the placing cavity 4, a line receiving spiral ring groove 6 arranged on the peripheral wall of the line receiving and releasing rotating roller 5 and used for containing the telescopic pipeline 3, an outlet pipe opening 7 penetrating the middle part of the placing cavity 4 and facing one side of the working module 1, a rotating assembly 8 arranged in the placing cavity 4 and used for driving the line receiving and releasing rotating roller 5 to rotate and a feeding assembly 9 arranged in the placing cavity 4 and used for driving the line receiving and releasing rotating roller 5 to slide, as shown in figures 1 and 2, an anti-abrasion arc angle 29 is arranged at the edge of the notch of the line-containing spiral ring groove 6; at first, flexible pipeline 3 individual layer winding is in holding line spiral ring groove 6, and abrasionproof camber 29 avoids flexible pipeline 3 to receive wearing and tearing, when needs receive and release flexible pipeline 3, starts runner assembly 8 and feed subassembly 9 simultaneously, makes receive and releases line revolving roller 5 rotate when receiving and releasing flexible pipeline 3, sends out mouth of pipe 7 with the end that breaks away from of flexible pipeline 3, can steadily receive and release flexible pipeline 3, avoids flexible pipeline 3 wearing and tearing.
As shown in fig. 1 and fig. 2, the placing cavity 4 includes a wide accommodating groove 24 for accommodating the take-up and pay-off rotating roller 5 wound with the telescopic pipeline 3 and a narrow accommodating groove 25 for accommodating the take-up and pay-off rotating roller 5 not wound with the telescopic pipeline 3, the outlet 7 is disposed at a connecting end of the wide accommodating groove 24 and the narrow accommodating groove 25, a guiding and limiting sliding groove 26 extending to the connecting end of the wide accommodating groove 24 and the narrow accommodating groove 25 along a length direction of the narrow accommodating groove 25 is disposed in the narrow accommodating groove 25, a connecting rotating column 30 is disposed at one end of the take-up and pay-off rotating roller 5 facing the narrow accommodating groove 25, and a guiding and limiting sliding block 27 is disposed on a peripheral wall of the connecting rotating column 30; when feeding subassembly 9 drive receipts and releases line and change roller 5 and slide, direction limiting slide 27 slides in direction limiting slide groove 26, receive and release line and change roller 5 and twine the part that has flexible pipeline 3 and be located holding wide groove 24, the position that does not twine flexible pipeline 3 is located the holding narrow end, not only makes receipts and releases line and change roller 5 and steadily slide, saves the usage space in tunnel moreover.
As shown in fig. 3 and 5, the feeding assembly 9 includes a sliding rail 10 disposed on a cavity wall of the length direction of the placing cavity 4 and extending along the length direction of the placing cavity 4, a sliding plate 11 slidably disposed on the sliding rail 10, a supporting linkage rod 12 disposed between an end wall of the sliding plate 11 opposite to the sliding rail 10 and the wire receiving and releasing rotating roller 5, a connecting ring 13 disposed at one end of the supporting linkage rod 12 away from the sliding plate 11 and rotatably connected with the wire receiving and releasing rotating roller 5, a linkage tooth 14 disposed on an opposite side wall of the sliding plate 11 and the sliding rail 10, a first servo motor 15 disposed in the placing cavity 4, and a driving gear 16 disposed at a driving end of the first servo motor 15 and meshed with the linkage tooth 14, the connecting ring 13 is disposed at an end wall of the wire receiving and releasing rotating roller 5 away from the wire receiving and releasing spiral ring groove 6, a supporting ring 22 is rotatably disposed at one end of the wire receiving and releasing rotating roller 5 away from the connecting ring 13, a balance supporting, the support ring 22 is arranged at the end wall of the take-up and pay-off rotating roller 5 far away from the wire-holding spiral ring groove 6, and the inner annular walls of the support ring 22 and the connecting ring 13 are both provided with a drag-reducing rolling ball 28; the servo motor I15 is started to enable the driving gear 16 to rotate and to be meshed with the linkage teeth 14, the sliding plate 11 slides on the sliding rail 10, meanwhile, under the action of the supporting linkage rod 12 and the connecting ring 13, the sliding plate 11 drives the take-up and pay-off wire rotating roller 5 to move, and meanwhile, the balance supporting rod 23, the supporting ring 22, the supporting linkage rod 12 and the connecting ring 13 also play a role in stably supporting the take-up and pay-off wire rotating roller 5.
As shown in fig. 4, the rotating assembly 8 includes a connecting circular groove 17 disposed at one end of the take-up and pay-off rotating roller 5 in the length direction, a plurality of limiting tooth grooves 18 disposed on the groove wall of the connecting circular groove 17 opposite to the notch and extending along the ring diameter direction of the connecting circular groove 17, a link ring 19 clamped with the limiting tooth grooves 18, a mounting plate 20 disposed on one side of the link ring 19 away from the connecting circular groove 17 and extending along the ring diameter of the link ring 19, and a second servo motor 21 disposed on the sliding plate 11 and having a driving end and the mounting plate 20 fixedly connected at the ring center of the link ring 19; and starting the second servo motor 21 to drive the linkage ring 19 to rotate, and under the limiting action of the limiting tooth grooves 18, the linkage ring 19 is clamped in the connecting circular groove 17 along the circumferential direction, so that the take-up and pay-off rotating roller 5 can be driven to rotate.
The working process is as follows:
the rotating speeds of the first servo motor 15 and the second servo motor 21 are preset, so that when the winding and unwinding roller 5 rotates to wind and unwind the telescopic pipeline 3, the separated end of the telescopic pipeline 3 is sent to the outlet pipe orifice 7, the servo motor II 21 is driven to drive the linkage ring 19 to rotate, under the limiting action of the limiting tooth grooves 18, the link ring 19 is clamped in the connecting ring groove 17 along the circumferential direction, the take-up and pay-off roller 5 is driven to rotate, the telescopic pipeline 3 is separated from the take-up and pay-off roller 5, meanwhile, the servo motor I15 is started, the driving gear 16 is driven to rotate and is meshed with the linkage teeth 14, the sliding plate 11 slides on the sliding rail 10, and simultaneously, under the action of the supporting linkage rod 12 and the connecting ring 13, the sliding plate 11 drives the take-up and pay-off rotating roller 5 to move, so that the separation end of the telescopic pipeline 3 extends out of the pipe outlet 7, and then the water at the water supply point 2 is conveyed to the working module 1 for working by the telescopic pipeline 3.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (8)

1. The utility model provides a portable subregion wisdom fire control unit in tunnel based on BIM technique, is including setting up work module (1) in the tunnel, a plurality of water supply point (2) of setting in the tunnel and set up flexible pipeline (3) between work module (1) and water supply point (2), its characterized in that: still including setting up and being located placing appearance chamber (4) of water supply point (2) department in the tunnel, set up and place and hold chamber (4) interior along placing receive and release line commentaries on classics roller (5) that hold chamber (4) length direction and slide, set up and be used for holding line spiral ring groove (6) of flexible pipeline (3) on receive and release line commentaries on classics roller (5) perisporium, run through and set up and holding chamber (4) middle part orientation work module (1) one side play mouth of pipe (7), set up and be used for driving receive and release line commentaries on classics roller (5) pivoted runner assembly (8) and set up and be used for driving in placing appearance chamber (4) and receive and release line commentaries on classics roller (5) feed assembly (9) that slide.
2. The BIM technology-based tunnel mobile type partitioned intelligent fire fighting device as claimed in claim 1, wherein: the feeding assembly (9) comprises a sliding rail (10) which is arranged on the cavity wall of the length direction of the placing cavity (4) and extends along the length direction of the placing cavity (4), a sliding plate (11) which is arranged on the sliding rail (10) in a sliding manner, a supporting linkage rod (12) which is arranged between the end wall of the sliding plate (11) opposite to the sliding rail (10) and the take-up and pay-off rotating roller (5), a connecting ring (13) which is arranged at one end of the supporting linkage rod (12) far away from the sliding plate (11) and is rotationally connected with the take-up and pay-off rotating roller (5), linkage teeth (14) which are arranged on the side wall of the sliding plate (11) opposite to the sliding rail (10), a servo motor I (15) which is arranged in the placing cavity (4) and a driving gear (16) which is arranged at the driving end of the servo motor I (15) and is, the connecting ring (13) is arranged on the end wall of the take-up and pay-off rotating roller (5) far away from the line containing spiral ring groove (6).
3. The BIM technology-based tunnel mobile type partitioned intelligent fire fighting device as claimed in claim 2, wherein: the rotating assembly (8) comprises a connecting circular groove (17) arranged at one end of the take-up and pay-off rotating roller (5) in the length direction, a plurality of limiting tooth grooves (18) arranged on the groove wall opposite to the groove opening of the connecting circular groove (17) and extending along the ring diameter direction of the connecting circular groove (17), a linkage ring (19) clamped with the limiting tooth grooves (18), a mounting plate (20) arranged on one side of the linkage ring groove (17) far away from the linkage ring (19) and extending along the ring diameter of the linkage ring (19), and a second servo motor (21) arranged on the sliding plate (11) and fixedly connected with the ring center of the linkage ring (19) through a driving end and the mounting plate (20).
4. The BIM technology-based tunnel mobile type partitioned intelligent fire fighting device according to claim 3, wherein: receive and release line and change roller (5) and keep away from the one end rotation of go-between (13) and be provided with support ring (22), be provided with balance support pole (23) between support ring (22) and slide plate (11), support ring (22) set up and keep away from the end wall department of appearance line spiral ring groove (6) receiving and releasing line and change roller (5).
5. The BIM technology-based tunnel mobile type partitioned intelligent fire fighting device according to claim 4, wherein: the accommodating cavity (4) comprises an accommodating wide groove (24) for accommodating a take-up and pay-off rotating roller (5) wound with a telescopic pipeline (3) and an accommodating narrow groove (25) for accommodating a take-up and pay-off rotating roller (5) not wound with the telescopic pipeline (3), and the pipe outlet (7) is arranged at the connecting end of the accommodating wide groove (24) and the accommodating narrow groove (25).
6. The BIM technology-based tunnel mobile type partitioned intelligent fire fighting device according to claim 5, wherein: the wire winding and unwinding device is characterized in that a guide limiting sliding groove (26) extending to the connecting end of the accommodating wide groove (24) and the accommodating narrow groove (25) along the length direction of the accommodating narrow groove (25) is arranged in the accommodating narrow groove (25), the wire winding and unwinding rotating roller (5) is rotatably provided with a connecting rotating column (30) towards one end of the accommodating narrow groove (25), and a guide limiting sliding block (27) is arranged on the peripheral wall of the connecting rotating column (30).
7. The BIM technology-based tunnel mobile type partitioned intelligent fire fighting device according to claim 6, wherein: and the inner annular walls of the support ring (22) and the connecting ring (13) are provided with drag reduction rolling balls (28).
8. The BIM technology-based tunnel mobile type partitioned intelligent fire fighting device as claimed in claim 1, wherein: and an anti-abrasion arc angle (29) is arranged at the edge of the notch of the line-containing spiral ring groove (6).
CN201920338368.7U 2019-03-15 2019-03-15 Portable subregion wisdom fire control unit in tunnel based on BIM technique Expired - Fee Related CN209917118U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920338368.7U CN209917118U (en) 2019-03-15 2019-03-15 Portable subregion wisdom fire control unit in tunnel based on BIM technique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920338368.7U CN209917118U (en) 2019-03-15 2019-03-15 Portable subregion wisdom fire control unit in tunnel based on BIM technique

Publications (1)

Publication Number Publication Date
CN209917118U true CN209917118U (en) 2020-01-10

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ID=69070376

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920338368.7U Expired - Fee Related CN209917118U (en) 2019-03-15 2019-03-15 Portable subregion wisdom fire control unit in tunnel based on BIM technique

Country Status (1)

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CN (1) CN209917118U (en)

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