CN220188448U - Water injection adjusting system for cable knocking spraying fire-resistant test - Google Patents
Water injection adjusting system for cable knocking spraying fire-resistant test Download PDFInfo
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- CN220188448U CN220188448U CN202321657096.XU CN202321657096U CN220188448U CN 220188448 U CN220188448 U CN 220188448U CN 202321657096 U CN202321657096 U CN 202321657096U CN 220188448 U CN220188448 U CN 220188448U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 16
- 238000002347 injection Methods 0.000 title abstract description 8
- 239000007924 injection Substances 0.000 title abstract description 8
- 238000005507 spraying Methods 0.000 title abstract description 6
- 239000007921 spray Substances 0.000 claims abstract description 58
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 230000003750 conditioning effect Effects 0.000 claims 7
- 238000010304 firing Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model provides a water injection regulating system for a cable knocking spray fire-resistant test, which comprises a cable sample and a fixing device, wherein the cable sample is fixed on the fixing device in a U shape, a height positioning system is arranged above the fixing device, one side of the fixing frame is provided with a horizontal positioning system, a spray head for spraying high-pressure water to the lowest point of the cable sample is arranged on the fixing device, and a water spray regulating assembly for regulating the position angle of the spray head according to the lowest point position of the cable sample is arranged on the spray head. According to the water injection adjusting system for the cable knocking spray fire resistance test, the first infrared ranging sensor and the second infrared ranging sensor are matched with each other to determine the lowest point position of the cable sample, and after the lowest point position of the cable sample is determined, the first servo motor and the second servo motor are matched with each other to adjust the position and the angle of the spray head, so that high-pressure water sprayed by the spray head always irradiates the weakest point of the cable sample, and the accuracy and the rigor of the cable fire resistance test are ensured.
Description
Technical Field
The utility model relates to the technical field of cable detection equipment, in particular to a water injection adjusting system for a cable knocking spray fire resistance test.
Background
The fire resistance of the cable is an important safety index of the cable, and in the fire resistance tests of the cable with the outer diameter of more than 20mm, such as GB/T19216.1, IEC 60331-1, BS 8491 and the like, the fire resistance test not only simulates flame burning of the cable under fire, but also simulates the impact of a cable body or a bracket by falling heavy objects, and further simulates the severe test that the cable is sprayed by a fire protection system and the like.
When the cable is tested, the cable is required to be bent into a U shape, and in the test, the cable is deformed due to factors such as acting force during bending, the cable is heated and softened, the outer diameter of the cable is reduced due to the fact that the outer sheath is burnt out, the cable is vibrated or the cable body is knocked by a metal rod, and the position of the cable is moved downwards. The lowest part of the U-shaped sample of the cable is used as the weakest point of the whole cable, and the direct injection of high-pressure water to the lowest point of the U-shaped sample of the cable is required to be ensured all the time so as to ensure the rigor of the test.
In the existing test, high-pressure water cannot always face the lowest point of the cable sample, a tester is required to enter a closed test space, and the position and the angle of the water spray head are manually adjusted. Although this approach is most stringent, the entire cable process is energized and the test personnel are at risk of electric shock. In the cable fire resistance test, the flame temperature of the flame supply torch reaches at least 830 ℃, the surrounding air temperature reaches even 200 ℃, and the test personnel are at risk of being burnt or scalded. And because the test space is airtight, oxygen deficiency, smoke and toxic gas may exist, which causes injury to test personnel.
Accordingly, there is a need in the art to create a device that allows for spray head adjustment based on the real-time location of the lowest point of a cable sample to meet the rigors of cable testing.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: in order to overcome the defect that high-pressure water can not always spray against the weakest point of a cable sample and the test accuracy can not be ensured in the cable test in the prior art, the utility model provides the water spray adjusting system for the cable knocking spray fire-resistant test.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a cable is knocked and is sprayed fire-resistant test water and spray governing system, includes cable sample and fixing device, the cable sample is the U-shaped that the opening upwards set up and fixes on the fixing device, the cable sample minimum is located on the vertical central line that sets up of fixing device, the fixing device top is equipped with the high positioning system who is used for confirming cable sample minimum height, one side of fixing device is equipped with the horizontal positioning system who is used for confirming cable sample minimum horizontal direction position, fixing device one side is equipped with the flame blast lamp that is used for burning the cable sample minimum, be equipped with the shower nozzle that is used for being used for the high-pressure water to cable sample minimum blowout, be equipped with on the shower nozzle and be used for adjusting shower nozzle position angle according to cable sample minimum position real-time.
The fixing device is used for fixing a cable sample in a U shape, the height positioning system is used for measuring the height of the lowest point of the cable sample, the horizontal positioning system is used for measuring the horizontal direction position of the lowest point of the cable sample, and the water spray adjusting assembly is adjusted through the computer according to multiple groups of two-dimensional data measured by the height positioning system and the horizontal positioning system, so that the position angle of the spray head is adjusted, and the high-pressure water spray head is ensured to track the lowest point (namely the weak point) of the cable sample in real time, so that a cable fire resistance test is performed.
Further, in order to fix the cable sample into the U-shaped to the weak point that cable bending produced when simulating the conflagration, fixing device includes horizontal support and vertical support, be equipped with on the horizontal support and be used for the cover cable sample two first fixed cover, two the horizontal support central line both sides are located to first fixed cover symmetry, horizontal support central line both sides symmetry is equipped with two vertical supports, vertical bar hole that is equipped with on the vertical support, the downthehole slip of bar is provided with a plurality of connecting rods, locates in the bar hole the connecting rod reduces according to from the top down's sequential length gradually, the one end that the bar hole was kept away from to the connecting rod is equipped with the second fixed cover of cover cable sample.
The two first fixing sleeves are symmetrically arranged on two sides of the central line of the horizontal support, so that the lowest point of the cable sample and the central line of the horizontal support are on the same vertical plane after the cable sample passes through the two first fixing sleeves. Set up the bar hole on the vertical support for the connecting rod can be in the downthehole removal of bar and rotation, selects the connecting rod of suitable length, passes the fixed cover of second with the cable sample, with the rocking that reduces the cable sample.
Further, the water spray adjusting part includes angle adjusting part and flexible subassembly, angle adjusting part includes first servo motor, first servo motor output with the shower nozzle is connected, the shower nozzle from the top down inclines to cable sample nadir direction, flexible subassembly includes the regulation frame, the one side that the horizontal stand is close to the cable sample is located to the regulation frame, be equipped with the transmission connecting rod in the regulation frame, the one end that the horizontal stand was kept away from to the transmission connecting rod stretch out the regulation frame with first servo motor casing fixed connection, be equipped with two at least second servo motor on the transmission connecting rod, be equipped with first gear on the second servo motor, be equipped with first rack in the regulation frame, first gear and first rack cooperation drive transmission connecting rod stretch out or retract the regulation frame.
The first gear is driven to rotate by the second servo motor, and the first gear rotates to be matched with a first rack in the adjusting frame to drive the transmission connecting rod to extend or retract into the adjusting frame; when the first servo motor rotates, the spray head rotates along the axis of the output end of the first servo motor, so that the angle is adjusted.
Further, electromagnetic band-type brake brakes are arranged at the output ends of the first servo motor and the second servo motor. The high-pressure water is sprayed out from the spray head, the spray head has larger recoil force, and in order to prevent the spray head with the adjusted position and angle from generating displacement, the electromagnetic band-type brake is arranged at the output ends of the first servo motor and the second servo motor, so that the self-locking function is realized.
Further, in order to measure the lowest point height of the cable sample, the height positioning system comprises a first infrared ranging sensor and a high-temperature protection component, the first infrared ranging sensor is arranged on a wall body above the cable sample, the high-temperature protection component comprises a cooling pipeline which is arranged on the outer side of the first infrared ranging sensor in a winding mode, a heat insulation shell is covered on the outer side of the cooling pipeline, and a detection hole matched with the first infrared ranging sensor is formed in the heat insulation shell. The first infrared ranging sensor is arranged on the roof right above the cable sample, and a cooling medium is arranged in the cooling pipeline through the heat insulation shell, so that the temperature around the first infrared ranging sensor is reduced, and the service life of the first infrared ranging sensor is greatly prolonged.
Further, in order to measure the position of cable sample minimum on the horizontal direction, horizontal positioning system includes second infrared ranging sensor and altitude mixture control subassembly, altitude mixture control subassembly includes step motor, second gear and second rack, second infrared ranging sensor and step motor casing fixed connection, second infrared ranging sensor sets up along the horizontal direction towards cable sample direction, the vertical setting of second rack, be equipped with on the step motor output with second rack engagement's second gear, second rack one side is vertical to be equipped with the slide rail, step motor with slide rail sliding connection.
Further, the first infrared ranging sensor, the second infrared ranging sensor, the stepping motor, the first servo motor and the second servo motor are all connected with a computer through signals.
Further, in order to simulate the heavy object and drop striking cable or horizontal support, cable sample one side is equipped with the knocking device, the knocking device is including beating the stick, beat and be equipped with on the stick and be used for driving the motor that beats the stick and swing along vertical plane, beat stick and cable sample minimum and locate on the coplanar.
The beneficial effects of the utility model are as follows: according to the water injection adjusting system for the cable knocking spraying fire-resistant test, provided by the utility model, the first infrared ranging sensor and the second infrared ranging sensor are matched with each other to measure multiple groups of two-dimensional data, so that the lowest point position of a cable sample is determined, and after the lowest point position of the cable sample is determined, the first servo motor and the second servo motor are matched with each other to adjust the position and the angle of the spray head, so that high-pressure water sprayed by the spray head always irradiates the weakest point of the cable sample, and the accuracy and the rigor of the cable fire-resistant test are ensured.
Drawings
The utility model is further described below with reference to the drawings and examples.
FIG. 1 is a schematic view of a preferred embodiment of the present utility model;
FIG. 2 is a schematic structural view of the fixture;
FIG. 3 is a schematic diagram of the structure of the height positioning system;
FIG. 4 is a schematic view of the structure of the water spray adjustment assembly;
fig. 5 is a schematic diagram of the structure of the horizontal positioning system.
In the figure: 1. the height positioning system comprises 11, a first infrared ranging sensor, 12, a cooling pipeline, 13, a heat insulation shell, 2, a water spraying adjusting component, 21, a spray head, 22, a first servo motor, 23, an adjusting frame, 24, a transmission connecting rod, 25, a second servo motor, 26, a first gear, 27, a first rack, 28, an electromagnetic band-type brake, 3, a fixing device, 31, a horizontal support, 32, a vertical support, 321, a strip-shaped hole, 33, a first fixing sleeve, 34, a connecting rod, 341, a second fixing sleeve, 4, a cable sample, 5, a flame blast lamp, 6, a horizontal positioning system, 61, a second infrared ranging sensor, 62, a stepping motor, 63, a second gear, 64, a second rack, 65, a slide rail, 7 and a knocking rod.
Detailed Description
The present utility model will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the utility model only by way of illustration, and therefore it shows only the constitution related to the utility model.
As shown in fig. 1, the water injection adjusting system for the cable knocking spray fire-resistant test comprises a cable sample 4 and a fixing device 3, wherein the cable sample 4 is fixed on the fixing device 3 in a U shape with an upward opening, the lowest point of the cable sample 4 is arranged on a central line of the fixing device 3 which is vertically arranged, a height positioning system 1 for determining the height of the lowest point of the cable sample 4 is arranged above the fixing device 3, a horizontal positioning system 6 for determining the horizontal position of the lowest point of the cable sample 4 is arranged on one side of the fixing device 3, a flame blast lamp 5 for burning the lowest point of the cable sample 4 is arranged on one side of the fixing device 3, a spray head 21 for spraying high-pressure water to the lowest point of the cable sample 4 is arranged on the fixing device 3, and a water spray adjusting assembly 2 for adjusting the position angle of the spray head 21 in real time according to the position of the lowest point of the cable sample 4 is arranged on the spray head 21.
As shown in fig. 2, the fixing device 3 includes a horizontal bracket 31 and a vertical bracket 32, two first fixing sleeves 33 for sleeving the cable sample 4 are provided on the horizontal bracket 31, the two first fixing sleeves 33 are symmetrically provided on two sides of a center line of the horizontal bracket 31, two vertical brackets 32 are symmetrically provided on two sides of the center line of the horizontal bracket 31, a waist-shaped hole for conveniently adjusting the position of the vertical bracket 32 is provided on the horizontal bracket 31, and the vertical bracket 32 adjusts the position on the horizontal bracket 31 through bolts and nuts so as to adapt to the cable samples 4 with different specifications; the vertical support 32 is vertically provided with a bar-shaped hole 321, a plurality of connecting rods 34 are slidably arranged in the bar-shaped hole 321, the connecting rods 34 arranged in the bar-shaped hole 321 are gradually reduced in length according to the sequence from top to bottom, and one end, away from the bar-shaped hole 321, of the connecting rods 34 is provided with a second fixing sleeve 341 sleeved with the cable sample 4. After the position of the connecting rod 34 in the bar-shaped hole 321 is determined, the position of the connecting rod 34 is fixed by adopting bolts and nuts; the first fixing sleeve 33 and the second fixing sleeve 341 cooperate with each other to ensure that the lowest point of the U-shaped cable sample 4 is located directly below the first infrared ranging sensor 11.
As shown in fig. 4, the water spray adjusting assembly 2 includes an angle adjusting assembly and a telescopic assembly, the angle adjusting assembly includes a first servo motor 22, an output end of the first servo motor 22 is connected with the spray head 21, the spray head 21 is inclined from top to bottom toward a lowest point direction of the cable sample 4, the telescopic assembly includes an adjusting frame 23, the adjusting frame 23 is disposed on one side of the horizontal bracket 31, which is close to the cable sample 4, a transmission connecting rod 24 is disposed in the adjusting frame 23, one end, far away from the horizontal bracket 31, of the transmission connecting rod 24 extends out of the adjusting frame 23 and is fixedly connected with a shell of the first servo motor 22, two second servo motors 25 are disposed on the transmission connecting rod 24, two first racks 27 are symmetrically disposed on two side walls disposed in the adjusting frame 23, and the first gears 26 on the two second servo motors 25 are matched with the two first racks 27 to drive the transmission connecting rod 24 to extend or retract into the adjusting frame 23.
Electromagnetic band-type brake brakes 28 are arranged at the output ends of the first servo motor 22 and the second servo motor 25.
As shown in fig. 3, the height positioning system 1 includes a first infrared ranging sensor 11 and a high-temperature protection component, the first infrared ranging sensor 11 is disposed on a wall above the cable sample 4, the high-temperature protection component includes a cooling pipe 12 wound on the outer side of the first infrared ranging sensor 11, a heat insulation shell 13 is covered on the outer side of the cooling pipe 12, and a detection hole matched with the first infrared ranging sensor 11 is formed in the heat insulation shell 13.
As shown in fig. 5, the horizontal positioning system 6 includes a second infrared ranging sensor 61 and a height adjusting assembly, the height adjusting assembly includes a stepper motor 62, a second gear 63 and a second rack 64, the second infrared ranging sensor 61 is fixedly connected with a housing of the stepper motor 62, the second infrared ranging sensor 61 is disposed along a horizontal direction towards the cable sample 4, the second rack 64 is disposed vertically, a second gear 63 engaged with the second rack 64 is disposed at an output end of the stepper motor 62, a slide rail 65 is disposed vertically at one side of the second rack 64, and the stepper motor 62 is slidingly connected with the slide rail 65.
The first infrared distance measuring sensor 11, the second infrared distance measuring sensor 61, the stepping motor 62, the first servo motor 22 and the second servo motor 25 are all in signal connection with a computer.
The utility model discloses a cable test sample, including cable test sample 4, the cable test sample 4 one side is equipped with the knocking device, the knocking device includes knocking stick 7, be equipped with on the knocking stick 7 and be used for driving the motor that knocking stick 7 swung along vertical plane, knocking stick 7 and cable test sample 4 minimum locate on the same vertical plane.
The working process comprises the following steps:
the cable sample 4 is fixed on the horizontal bracket 31 and the vertical bracket 32 in a U shape through the first fixing sleeve 33 and the second fixing sleeve 341, the cable sample 4 is burned through the flame burner 5, the lowest point of the cable sample 4 is arranged under the first infrared ranging sensor 11, the computer controls the stepping motor 62 to rotate according to the height of the lowest point of the cable sample 4 measured by the first infrared sensor, so that the second infrared ranging sensor 61 is driven to capture the lowest point of the cable sample 4 in real time in the horizontal direction, the first infrared ranging sensor 11 and the second infrared ranging sensor 61 are matched with each other, and a plurality of groups of two-dimensional data are measured, so that the lowest point position of the cable sample 4 is determined;
after the lowest point position of the cable sample 4 is determined, the distance that the transmission connecting rod 24 extends out of the adjusting frame 23 is adjusted through the second servo motor 25, the angle of the spray head 21 is adjusted through the first servo motor 22, and the first servo motor 22 and the second servo motor 25 are matched with each other to enable high-pressure water sprayed by the spray head 21 to directly spray the lowest point of the cable sample 4;
the knocking device is arranged on one side of the cable sample 4, controls the motor to swing the knocking rod 7 at a fixed frequency, and knocks the lowest point or the horizontal bracket 31 of the cable sample 4; when the lowest point of the cable sample 4 changes, data measured by the first infrared ranging sensor 11 and the second infrared ranging sensor 61 are fed back to the computer, and the computer controls the spray head 21 to adjust the position and the angle in time, so that high-pressure water is continuously sprayed at the lowest point of the cable sample 4.
Directions and references (e.g., up, down, left, right, etc.) in this utility model may be used only to aid in the description of features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
While the foregoing is directed to the preferred embodiment of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (8)
1. A cable is knocked and is sprayed fire-resistant test water and sprays governing system, its characterized in that: including cable sample (4) and fixing device (3), cable sample (4) are the U-shaped that the opening set up upwards and fix on fixing device (3), cable sample (4) minimum are located on the vertical central line that sets up of fixing device (3), fixing device (3) top is equipped with high positioning system (1) that are used for confirming cable sample (4) minimum height, one side of fixing device (3) is equipped with horizontal positioning system (6) that are used for confirming cable sample (4) minimum horizontal direction position, fixing device (3) one side is equipped with flame blowtorch (5) that are used for firing cable sample (4) minimum, be equipped with on fixing device (3) and be used for shower nozzle (21) to cable sample (4) minimum blowout high-pressure water, be equipped with on shower nozzle (21) and be used for adjusting shower nozzle (21) position angle's water spray adjusting part (2) in real time according to cable sample (4) minimum position.
2. A cable knock spray fire resistant test water spray conditioning system as defined in claim 1 wherein: fixing device (3) are including horizontal support (31) and vertical support (32), be equipped with on horizontal support (31) and be used for entangling two first fixed cover (33) of cable sample (4), two first fixed cover (33) symmetry are located horizontal support (31) central line both sides, horizontal support (31) central line both sides symmetry is equipped with two vertical supports (32), vertical bar hole (321) that are equipped with on vertical support (32), the downthehole a plurality of connecting rods (34) that are provided with of bar hole (321), locate in bar hole (321) connecting rod (34) reduce according to from the top down's sequential length gradually, the one end that bar hole (321) was kept away from to connecting rod (34) is equipped with second fixed cover (341) of entangling cable sample (4).
3. A cable knock spray fire resistant test water spray conditioning system according to claim 2, wherein: the water spray adjusting assembly (2) comprises an angle adjusting assembly and a telescopic assembly, the angle adjusting assembly comprises a first servo motor (22), the output end of the first servo motor (22) is connected with the spray head (21), the spray head (21) inclines from top to bottom towards the lowest point direction of the cable sample (4), the telescopic assembly comprises an adjusting frame (23), the adjusting frame (23) is arranged on one side, close to the cable sample (4), of the horizontal bracket (31), a transmission connecting rod (24) is arranged in the adjusting frame (23), one end, far away from the horizontal bracket (31), of the transmission connecting rod (24) is extended out of the adjusting frame (23) and fixedly connected with a shell of the first servo motor (22), at least two second servo motors (25) are arranged on the transmission connecting rod (24), first gears (26) are arranged on the second servo motors, first racks (27) are arranged in the adjusting frame (23), and the first gears (26) and the first racks (27) are matched with the transmission connecting rod (24) to drive the transmission connecting rod (24) to extend or retract into the adjusting frame (23).
4. A cable knock spray fire resistant test water spray conditioning system according to claim 3, wherein: and electromagnetic band-type brake (28) is arranged at the output ends of the first servo motor (22) and the second servo motor (25).
5. A cable knock spray fire resistant test water spray conditioning system according to claim 3, wherein: the high-temperature positioning system (1) comprises a first infrared ranging sensor (11) and a high-temperature protection component, wherein the first infrared ranging sensor (11) is arranged on a wall body above a cable sample (4), the high-temperature protection component comprises a cooling pipeline (12) which is wound on the outer side of the first infrared ranging sensor (11), a heat insulation shell (13) is covered on the outer side of the cooling pipeline (12), and a detection hole matched with the first infrared ranging sensor (11) is formed in the heat insulation shell (13).
6. A cable knock spray fire resistant test water spray conditioning system as defined in claim 5 wherein: the horizontal positioning system (6) comprises a second infrared ranging sensor (61) and a height adjusting assembly, the height adjusting assembly comprises a stepping motor (62), a second gear (63) and a second rack (64), the second infrared ranging sensor (61) is fixedly connected with a shell of the stepping motor (62), the second infrared ranging sensor (61) is arranged along the horizontal direction towards a cable sample (4), the second rack (64) is vertically arranged, a second gear (63) meshed with the second rack (64) is arranged at the output end of the stepping motor (62), a sliding rail (65) is vertically arranged on one side of the second rack (64), and the stepping motor (62) is in sliding connection with the sliding rail (65).
7. A cable knock spray fire resistant test water spray conditioning system as defined in claim 6 wherein: the first infrared distance measuring sensor (11), the second infrared distance measuring sensor (61), the stepping motor (62), the first servo motor (22) and the second servo motor (25) are all connected with a computer through signals.
8. A cable knock spray fire resistant test water spray conditioning system as defined in claim 1 wherein: the utility model discloses a cable sample, including cable sample (4), cable sample (4) one side is equipped with the knocking device, the knocking device is including knocking stick (7), be equipped with on knocking stick (7) and be used for driving and beat stick (7) along vertical plane wobbling motor, beat stick (7) and cable sample (4) minimum and locate on the same vertical plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321657096.XU CN220188448U (en) | 2023-06-28 | 2023-06-28 | Water injection adjusting system for cable knocking spraying fire-resistant test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321657096.XU CN220188448U (en) | 2023-06-28 | 2023-06-28 | Water injection adjusting system for cable knocking spraying fire-resistant test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220188448U true CN220188448U (en) | 2023-12-15 |
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ID=89108305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321657096.XU Active CN220188448U (en) | 2023-06-28 | 2023-06-28 | Water injection adjusting system for cable knocking spraying fire-resistant test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220188448U (en) |
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2023
- 2023-06-28 CN CN202321657096.XU patent/CN220188448U/en active Active
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