CN220455989U - Inclined tunnel fire disaster scale test platform capable of randomly adjusting gradient - Google Patents
Inclined tunnel fire disaster scale test platform capable of randomly adjusting gradient Download PDFInfo
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- CN220455989U CN220455989U CN202321952079.9U CN202321952079U CN220455989U CN 220455989 U CN220455989 U CN 220455989U CN 202321952079 U CN202321952079 U CN 202321952079U CN 220455989 U CN220455989 U CN 220455989U
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- 238000012360 testing method Methods 0.000 title claims abstract description 123
- 239000000779 smoke Substances 0.000 claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 238000009423 ventilation Methods 0.000 claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 238000004088 simulation Methods 0.000 claims abstract description 12
- 239000011521 glass Substances 0.000 claims abstract description 9
- 238000005303 weighing Methods 0.000 claims description 23
- 230000003068 static effect Effects 0.000 claims description 14
- 238000009529 body temperature measurement Methods 0.000 claims description 8
- 230000003028 elevating effect Effects 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims 2
- 238000011980 disaster recovery test Methods 0.000 claims 1
- 230000006399 behavior Effects 0.000 abstract description 16
- 230000033001 locomotion Effects 0.000 abstract description 16
- 231100000331 toxic Toxicity 0.000 abstract description 9
- 230000002588 toxic effect Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 238000011160 research Methods 0.000 description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004379 similarity theory Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model discloses a fire disaster reduced scale test platform of an inclined tunnel with optionally adjustable gradient, which relates to the technical field of fire disaster safety, the device solves the technical problems that the existing inclined tunnel fire test device can not well demonstrate specific fire behaviors and motion propagation rules of smoke, can not be scaled down according to the equal proportion simulation of an actual tunnel, and has limited simulation effect. The utility model comprises a test platform main body, a test platform base, a gantry crane bracket, a ventilation system, a fire source simulation system and a measurement system, wherein the test platform main body and an actual inclined tunnel are in equal proportion structure, the whole is composed of a plurality of sections of detachable high-temperature refractory glass, one end of the main body of the test platform is connected with the base of the test platform in a sliding way, and the other end of the main body of the test platform is connected with the lifting device of the gantry crane bracket. The device can better simulate the combustion behavior of fire disaster under different ventilation and smoke discharge modes in the inclined tunnel and the evolution of the movement and propagation of toxic smoke in a limited space, and experimental phenomena can be recorded through shooting of transparent high-temperature-resistant glass.
Description
Technical Field
The utility model belongs to the technical field of fire safety, and particularly relates to a gradient-adjustable inclined tunnel fire scale test platform.
Background
As the demand for railway transportation increases over complex terrain, many plateau and mountain areas are beginning to build railway lines, in actual engineering construction, the gradient of a partially inclined tunnel may reach a gradient of 10% or even 30%. Therefore, the existing research results on inclined tunnels cannot be directly applied, and more intensive researches on the fire smoke spread characteristics of inclined tunnels with larger gradients are necessary. Because the full-size fire test consumes a large amount of manpower, material resources and financial resources, the full-size fire test is easily affected by various factors in the test, the conditions are difficult to control and the repeatability is poor, so the full-size fire test is not easy to develop. And the development of small-size test research meeting the similarity theory can simultaneously consider the advantages of simple operation, lower cost, higher reliability and good reproducibility.
Therefore, as the test device for simulating the fire ventilation effect of one-end plugging inclined tunnel provided by application number CN202320268007.6, the fire smoke distribution in pipelines with different gradients is analyzed and studied by controlling the position of a fire source, the exhaust condition, the plugging end of a tunnel main body and other variables. But the test device can not well demonstrate specific fire behavior and motion propagation law of smoke, and the device adopts a lifting rope to be lifted at the inclination angle of the roof adjusting device through a winch, so that the device is limited by specific volume and mass, can not be simulated and reduced according to the equal proportion of an actual tunnel, and has limited simulation effect.
Disclosure of Invention
The utility model discloses a gradient-adjustable inclined tunnel fire disaster scaling test platform, which aims to solve the technical problems that the conventional inclined tunnel fire disaster test device cannot well demonstrate specific fire behaviors and motion propagation rules of smoke, cannot simulate and shrink according to the equal proportion of an actual tunnel, and has limited simulation effect.
By adopting the test platform to develop the research on the combustion behavior of the fire disaster and the evolution law of the movement and propagation of toxic smoke in the limited space under different ventilation and smoke discharge modes in the inclined tunnel, the test platform can provide scientific basis and data support for the fire disaster detection, fire extinguishment, structure protection and smoke discharge system design of the inclined tunnel in China, and has important theoretical significance and application value.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a but slope tunnel conflagration scale test platform of arbitrary regulation slope, includes test platform main part, test platform base, gantry crane support, ventilation system, fire source analog system and measurement system, the gantry crane support is provided with elevating gear, test platform main part and actual slope tunnel equal proportion structure, wholly by the detachable high temperature refractory glass of multisection constitute, test platform main part one end sliding connection in the test platform base, the other end connect in elevating gear, just the gliding one end slip direction orientation of test platform main part the gantry crane support.
By adopting the technical scheme, the portal crane bracket is adopted to lift one end of the test platform to incline the test platform, the structure is stable, the tunnel is allowed to be in a reduced structure in an equal proportion, the combustion behavior of fire disaster and the evolution of movement and propagation of toxic smoke in a limited space in different ventilation and smoke discharge modes in the inclined tunnel can be better and truly simulated, and different kinds of data in the test process can be measured and recorded through the measurement system respectively so as to facilitate the follow-up observation and study of the combustion behavior.
Preferably, the measuring system comprises a fire source mass loss measuring system, a temperature measuring system and a flue gas flow field pattern collecting system.
By adopting the technical scheme, the fire source quality loss data, the temperature data in the test platform main body and the smoke movement propagation graph are respectively measured, and the system research can be carried out on the combustion behavior of the fire disaster and the evolution of the movement and propagation of toxic smoke in a limited space under different ventilation and smoke discharge modes in the inclined tunnel.
Preferably, the fire source quality loss measurement system is arranged on the main body axis of the test platform, the fire source quality loss measurement system comprises a weighing device and a data acquisition device connected with an electric signal of the weighing device, the weighing device is provided with the fire source simulation system, and the weighing device is arranged on the main body axis of the test platform through a first bracket.
By adopting the technical scheme, the fire source quality change condition is observed through real-time monitoring and weighing.
Preferably, the temperature measurement system comprises a plurality of groups of thermocouples and a data acquisition device connected with the other ends of the thermocouples, and the plurality of groups of thermocouples are arranged on the ceiling inside the test platform main body at intervals.
By adopting the technical scheme, the thermocouple arranged at uniform intervals monitors the temperature change conditions of different positions inside the main body of the test platform.
Preferably, the flue gas flow field pattern acquisition system comprises a laser sheet light source and two digital cameras, wherein the laser sheet light source is arranged on the side surface of the main body of the test platform, and the two digital cameras are respectively arranged on the side surface of the main body of the test platform and the axis of the sliding end.
By adopting the technical scheme, experimental phenomena are recorded through transparent high-temperature-resistant glass shooting, specifically, the laser sheet source irradiates a smoke movement track, and the digital camera records the changes of flame morphology and smoke transportation behavior in the experimental process.
Preferably, the ventilation system comprises a static pressure box, a fan and a fan variable frequency regulator, wherein the static pressure box is arranged on the main body of the test platform and is close to an outlet at one end of the gantry crane bracket, and the static pressure box is connected with the fan through a soft air pipe.
By adopting the technical scheme, the test platform main body is ventilated through the fan, the static pressure box reduces negative pressure loss, the soft air pipe is connected, resonance phenomenon can be effectively avoided, and the soft air pipe can be suitable for extension and extension after one end of the static pressure box is lifted.
Preferably, the fire source simulation system comprises a fire source, wherein the fire source is arranged on the weighing device through a second support, and the fire source can simulate two fire source states of incomplete combustion and complete combustion.
By adopting the technical scheme, the fire source respectively adopts n-heptane and methanol as fuel, and the two fire source states of incomplete combustion and complete combustion are respectively simulated.
Preferably, the first support is detachably arranged in the test platform main body, two surfaces of the first support, through which the axis of the test platform main body passes, are provided with scissor frames, and two ends of each scissor frame are respectively hinged to the lower bottom surfaces of the test platform main body and the weighing device.
By adopting the technical scheme, the bracket can be flexibly replaced, and the upper level of the bracket can be kept under different gradient conditions.
Preferably, the test bed base is symmetrically provided with two groups of sliding rails, the sliding ends of the test bed main body are provided with wheel pairs corresponding to the intervals between the two groups of sliding rails, and the test bed main body is slidably connected with the test bed base through the wheel pairs arranged on the sliding rails.
By adopting the technical scheme, when the test platform main body is lifted upwards, the sliding resistance of the sliding end of the test platform main body is small, and the test platform main body is convenient to slide.
Preferably, the lifting device is arranged on a cross rod at the top end of the gantry crane bracket, and the gantry crane bracket is not provided with a cross rod on the surface opposite to the main body of the test platform.
By adopting the technical scheme, the cross rod is prevented from blocking the main body of the experimental platform when the main body of the experimental platform is lifted.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. according to the dimensional similarity theory of fluid mechanics, the utility model can better simulate the combustion behavior of fire disaster under different ventilation and smoke discharge modes in the inclined tunnel and the evolution of the movement and propagation of toxic smoke in a limited space, and can record experimental phenomena through transparent high-temperature-resistant glass shooting;
2. according to the fire source quality loss measurement system, the customized support is placed on the longitudinal center line in the test platform main body, the support can be replaced under different gradient conditions to keep the upper level of the support, the weighing device is placed above the support, the fire source is placed above the weighing device, and the fire source is ensured to be kept level all the time under different tunnel gradients;
3. in the aspect of a measurement system, the utility model is provided with a complete fire source quality loss measurement system, a temperature measurement system and a smoke flow field image acquisition system, and can carry out systematic research on the combustion behavior of fire disasters in different ventilation and smoke discharge modes in an inclined tunnel and the evolution of the movement and propagation of toxic smoke in a limited space;
4. compared with full-scale experiments, the reduced-scale test platform has less consumption, can conveniently control boundary conditions and environmental parameters, and has high accuracy and high repeatability; the reduced scale test platform is specially used for comprehensively researching fire temperature distribution, speed distribution, limited space fire plume shape and ceiling jet characteristic parameter distribution of the inclined tunnel. On the basis of the former research, the characteristics that the full-size experiment is high in cost and the CFD numerical simulation is difficult to truly simulate the fire disaster working condition are overcome, meanwhile, the experimental precision and repeatability are guaranteed, the experimental platform is adopted to develop the research on the combustion behavior of the fire disaster and the evolution rule of the movement and propagation of toxic smoke in a limited space under different ventilation and smoke discharge modes in the inclined tunnel, and scientific basis and data support can be provided for the fire disaster detection, fire extinguishment, structural protection and smoke discharge system design of the inclined tunnel in China, so that the experimental platform has important theoretical significance and application value.
Drawings
The utility model will now be described by way of example and with reference to the accompanying drawings in which:
fig. 1 is a schematic perspective view (inclined state) of a reduced-scale test platform according to an embodiment of the present utility model;
fig. 2 is a schematic perspective view (horizontal state) of a reduced-scale test platform according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram (side view) of a temperature measurement point of a reduced-scale test platform according to an embodiment of the present utility model;
fig. 4 is a schematic diagram (side view) of a temperature measurement point of a reduced-scale test platform according to an embodiment of the present utility model;
fig. 5 is a schematic diagram (side view) of a temperature measurement point of a reduced-scale test platform according to an embodiment of the present utility model;
wherein: 1-a test platform body; 2-a test bed base; 3-gantry crane supports; 4-a ventilation system; 5-a fire source simulation system; 6-a measurement system; 7-lifting devices; 8-a static pressure box; 9-a fan; 10-soft air pipes; 11-a fan variable frequency regulator; 12-a weighing device; 13-a first scaffold; 131-a scissors fork; 14-a laser sheet light source; 15-a digital camera; 16-thermocouple tree; 17-thermocouple; 18-a sliding track; 19-wheel pairs.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application and the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
In the description of the embodiments of the present application, it should be noted that, the terms "inner wall," "outer wall," "lower end," "away from," and the like indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, or an orientation or a positional relationship in which the inventive product is conventionally put in use, merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
The present utility model is described in detail below with reference to fig. 1-5.
Example 1:
the utility model provides a slope tunnel conflagration scale test platform of adjustable slope wantonly, includes test platform main part 1, test platform base 2, gantry crane support 3, ventilation system 4, fire source analog system 5 and measurement system 6, gantry crane support 3 is provided with elevating gear 7, test platform main part 1 and actual slope tunnel equal proportion structure wholly comprise 10 sections detachable high temperature fire-resistant glass, every section fire-resistant glass internal diameter 36mm, long 1m, thickness 5mm, test platform main part 1 one end sliding connection in test platform base 2, the other end connect in elevating gear 7, just the gliding one end slip direction orientation of test platform main part 1 gantry crane support 3.
In this embodiment, the test platform is configured according to the proportion of the actual inclined tunnel unidirectional lane tunnel 1:15, and the test platform main body 1 can continuously change between 0% and 30% of the inclined gradient.
By adopting the technical scheme, the portal crane bracket 3 is adopted to lift one end of the test platform to incline the test platform, the structure is stable, the tunnel is allowed to be in a reduced structure in an equal proportion, the combustion behavior of fire disaster and the evolution of movement and propagation of toxic smoke in a limited space under different ventilation and smoke discharge modes in the inclined tunnel can be better and truly simulated, and the measurement and recording of different kinds of data in the test process can be respectively carried out through the measurement system 6, so that the combustion behavior can be observed and researched later.
In this embodiment, the measurement system 6 includes a fire source mass loss measurement system 6, a temperature measurement system 6, and a flue gas flow field pattern acquisition system.
By adopting the technical scheme, the fire source quality loss data, the temperature data in the test platform main body 1 and the smoke movement propagation graph are respectively measured, and the system research can be carried out on the combustion behavior of the fire disaster and the movement and propagation evolution of the toxic smoke in the limited space under different ventilation and smoke discharge modes in the inclined tunnel.
In this embodiment, the fire source quality loss measurement system 6 is disposed on the axis of the test platform main body 1, the fire source quality loss measurement system 6 includes a weighing device 12 and a data acquisition device electrically connected to the weighing device 12, the weighing device 12 is provided with the fire source simulation system 5, and the weighing device 12 is disposed on the axis of the test platform main body 1 by being provided with a first bracket 13.
In this embodiment, the weighing device adopts an electronic balance, which has high accuracy and is less affected by temperature.
By adopting the technical scheme, the fire source quality change condition is observed through real-time monitoring and weighing.
In this embodiment, the temperature measurement system 6 includes several groups of thermocouples 17 and a data acquisition device connected to the other end of the thermocouples 17, where the several groups of thermocouples 17 are disposed at intervals on the ceiling inside the test platform body 1.
By adopting the technical scheme, the temperature change conditions of different positions inside the test platform main body 1 are monitored through the thermocouples 17 which are uniformly arranged at intervals.
In this embodiment, the flue gas flow field pattern collection system includes a laser film light source 14 and two digital cameras 15, the laser film light source 14 is disposed on the side surface of the test platform main body 1, and the two digital cameras 15 are respectively disposed on the side surface of the test platform main body 1 and the axis of the sliding end.
By adopting the technical scheme, experimental phenomena are recorded through the transparent high-temperature-resistant glass, specifically, the laser sheet source irradiates a smoke movement track, and the digital camera 15 records the changes of flame morphology and smoke transportation behavior in the experimental process.
In this embodiment, the ventilation system 4 includes a static pressure box 8, a fan 9 and a fan variable frequency regulator 11, where the static pressure box 8 is disposed on the test platform main body 1 near to an outlet at one end of the gantry crane bracket 3, and the static pressure box 8 is connected with the fan 9 by a soft air pipe 10.
By adopting the technical scheme, the inside of the test platform main body 1 is ventilated through the fan 9, the static pressure box 8 reduces negative pressure loss, the soft air pipe 10 is connected, resonance phenomenon can be effectively avoided, and the soft air pipe 10 can be suitable for extension and expansion after one end of the static pressure box 8 is lifted.
Example 2:
the present embodiment differs from embodiment 1 only in that in the present embodiment, the fire source is placed at a distance of 2.3m from the ventilation inlet of the tunnel, 103 thermocouples 17 are arranged axially 20mm below the ceiling, 9 thermocouple trees 16 are arranged at intervals of 1m along the axial direction of the tunnel, and a data acquisition device connected to the other end of the thermocouples 17, wherein the thermocouple trees 16 are vertically spaced 20mm, 70mm, and the uppermost thermocouple 17 is 20mm from the ceiling, and the lowermost thermocouple 17 is 300mm from the ceiling.
In this embodiment, the first bracket 13 is detachably disposed inside the test platform body 1, and two surfaces of the first bracket 13 passing through the axis of the test platform body 1 are provided with a scissor bracket 131, and two ends of the scissor bracket 131 are respectively hinged to the lower bottom surfaces of the test platform body 1 and the weighing device 12.
By adopting the technical scheme, the bracket can be flexibly replaced, and the upper level of the bracket can be kept under different gradient conditions.
In this embodiment, the test bench base 2 is symmetrically provided with two sets of sliding rails 18, the sliding end of the test bench body 1 is provided with a wheel pair 19 corresponding to the distance between the two sets of sliding rails 18, and the test bench body 1 is slidably connected with the test bench base 2 through the wheel pair 19 arranged on the sliding rails 18.
By adopting the technical scheme, when the test platform main body 1 is lifted upwards, the sliding resistance of the sliding end of the test platform main body 1 is small, and the test platform is convenient to slide.
In this embodiment, the lifting device 7 is disposed on a cross bar at the top end of the gantry crane bracket 3, and the gantry crane bracket 3 is not disposed on a surface opposite to the test platform main body 1.
By adopting the technical scheme, the cross rod is prevented from blocking the main body of the experimental platform when the main body 1 of the experimental platform is lifted.
The connection modes related to the utility model are all the prior art, and can be completely realized by the skilled in the art without redundancy.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. Slope tunnel conflagration scale test platform that can adjust slope wantonly, its characterized in that: including test platform main part (1), test bench base (2), gantry crane support (3), ventilation system (4), fire source analog system (5) and measurement system (6), gantry crane support (3) are provided with elevating gear (7), test platform main part (1) and actual slope tunnel equal proportion structure, wholly constitute by multisection detachable high temperature refractory glass, test platform main part (1) one end sliding connection in test bench base (2), the other end connect in elevating gear (7), just test platform main part (1) gliding one end slip direction orientation gantry crane support (3).
2. The gradient-adjustable inclined tunnel fire disaster reduced scale test platform according to claim 1, wherein: the measuring system (6) comprises a fire source mass loss measuring system, a temperature measuring system and a smoke flow field pattern collecting system.
3. The gradient-adjustable inclined tunnel fire disaster reduced scale test platform according to claim 2, wherein: the fire source quality loss measurement system is arranged on the axis of the test platform main body (1), the fire source quality loss measurement system comprises a weighing device (12) and a data acquisition device electrically connected with the weighing device (12), the weighing device (12) is provided with a fire source simulation system (5), and the weighing device (12) is arranged on the axis of the test platform main body (1) through a first bracket (13).
4. A sloped tunnel fire disaster recovery test platform according to claim 2 or 3, characterized in that: the temperature measurement system comprises a plurality of groups of thermocouples and a data acquisition device connected with the other ends of the thermocouples, and the plurality of groups of thermocouples are arranged on the inner ceiling of the test platform main body (1) at intervals.
5. The gradient-adjustable inclined tunnel fire disaster reduced scale test platform according to claim 4, wherein: the smoke flow field pattern acquisition system comprises a laser sheet light source (14) and two digital cameras (15), wherein the laser sheet light source (14) is arranged on the side face of the test platform main body (1), and the two digital cameras (15) are respectively arranged on the side face of the test platform main body (1) and the axis of the sliding end.
6. A sloped tunnel fire scale testing platform according to any one of claims 1-3 and 5, characterized in that: the ventilation system (4) comprises a static pressure box (8), a fan (9) and a fan variable frequency regulator (11), wherein the static pressure box (8) is arranged on the test platform main body (1) and is close to an outlet at one end of the gantry crane bracket (3), and the static pressure box (8) is connected with the fan (9) through a soft air pipe (10).
7. The gradient-adjustable inclined tunnel fire disaster reduced scale test platform according to claim 3, wherein: the fire source simulation system (5) comprises a fire source, wherein the fire source is arranged on the weighing device (12) through a second support, and the fire source can simulate two fire source states of incomplete combustion and complete combustion.
8. The gradient-adjustable inclined tunnel fire scale test platform according to claim 3 or 7, wherein: the first support (13) is detachably arranged inside the test platform main body (1), two faces, through which the axis of the test platform main body (1) passes, of the first support (13) are provided with a shearing fork frame (131), and two ends of the shearing fork frame (131) are respectively hinged to the lower bottom faces of the test platform main body (1) and the weighing device (12).
9. A sloped tunnel fire scale testing platform according to any one of claims 1-3, 5 and 7, characterized in that: the test bed base (2) is symmetrically provided with two groups of sliding rails (18), the sliding ends of the test bed main body (1) are provided with wheel pairs (19) corresponding to the intervals between the two groups of sliding rails (18), and the test bed main body (1) is slidably connected with the test bed base (2) through the wheel pairs arranged on the sliding rails (18).
10. A sloped tunnel fire scale testing platform according to any one of claims 1-3, 5 and 7, characterized in that: the lifting device (7) is arranged on a cross rod at the top end of the gantry crane bracket (3), and the cross rod is not arranged on the surface of the gantry crane bracket (3) opposite to the test platform main body (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321952079.9U CN220455989U (en) | 2023-07-24 | 2023-07-24 | Inclined tunnel fire disaster scale test platform capable of randomly adjusting gradient |
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| CN202321952079.9U CN220455989U (en) | 2023-07-24 | 2023-07-24 | Inclined tunnel fire disaster scale test platform capable of randomly adjusting gradient |
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| CN220455989U true CN220455989U (en) | 2024-02-06 |
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