Crown fire simulation test device

Abstract

The utility model relates to the technical field of crown fire simulation tests, in particular to a crown fire simulation test device which is convenient to disassemble, package and transport, and improves repeatability and flexibility of experiments. Comprising a fixed supporting column, and a threaded hole is formed in the fixed supporting column; the adjusting screw rod is inserted into the threaded hole of the fixed supporting column in a threaded manner; a threaded hole is formed in the adjusting screw tube, and the adjusting screw rod is sleeved with the adjusting screw tube in a threaded mode; the simulation trunk mechanism is arranged on the adjusting screw tube and used for bearing simulation branches; the simulation trunk mechanism further comprises a trunk, a threaded plug is arranged at the bottom end of the trunk, and the trunk is inserted into the top of the adjusting solenoid through the threaded plug in a threaded mode. A plurality of groups of branch simulation mechanisms, wherein each group of branch simulation mechanism is arranged on the trunk; the branch simulation mechanism comprises a dragging plate which is fixedly arranged on the outer side wall of the trunk; the two fixing hoops are fixedly mounted on the outer side wall of the trunk; and the branches are bent pipes.

Description

Technical Field

[0001] This utility model relates to the technical field of crown fire simulation experiments, and in particular to a crown fire simulation experiment device. Background Technology

[0002] Crown fire refers to a type of fire where flames spread along the top of trees. It is characterized by rapid propagation, intense intensity, and difficulty in control, making the study of crown fire behavior particularly important. However, directly studying crown fire in the natural environment faces numerous challenges, including difficulty in controlling experimental conditions, high safety risks, and potential environmental damage.

[0003] To address these challenges, researchers need an experimental setup capable of simulating crown fire combustion under controlled conditions. Traditional simulation methods often lack flexibility, cannot accurately adjust the height and angle of the simulated trunk and branches, and are often inconvenient to assemble, disassemble, and carry. This limits the realism and repeatability of the experiments, and also hinders field testing at different locations or the transportation of experimental equipment. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a crown fire simulation test device that is easy to disassemble, easy to package and transport, and improves the repeatability and flexibility of the experiment.

[0005] This utility model provides a crown fire simulation test device, comprising:

[0006] A fixed support column is provided, and threaded holes are provided inside the fixed support column;

[0007] The adjusting screw is threadedly inserted into the threaded hole of the fixed support column;

[0008] The adjusting screw tube has a threaded hole inside, and the threaded adjusting screw tube is threadedly fitted onto the adjusting screw rod.

[0009] The simulated tree trunk mechanism, mounted on the adjusting screw, is used to support simulated tree branches;

[0010] The simulated tree trunk mechanism also includes:

[0011] The main trunk has a threaded plug at its bottom, and the main trunk is threadedly inserted into the top of the adjusting screw tube through the threaded plug.

[0012] Several sets of branch and trunk simulation mechanisms are set on the main trunk;

[0013] The branch and trunk simulation mechanism includes:

[0014] The sliding plate is fixedly installed on the outer wall of the main trunk.

[0015] Both fixing hoops are fixedly installed on the outer wall of the main trunk;

[0016] The branches are designed as curved tubes with insertion holes. The branches are inserted into the fixing hoop and supported by the drag plate.

[0017] This utility model discloses a crown fire simulation test device, wherein an anti-loosening sleeve is provided on the threaded fitting of the adjusting screw, and the anti-loosening sleeve is used to lock the adjusting screw.

[0018] This utility model discloses a crown fire simulation test device, in which four reinforcing rods are arranged in a circular pattern on a fixed support column to enhance the support strength of the fixed support column.

[0019] The present invention relates to a crown fire simulation test device, wherein an anti-loosening washer is provided at the end of the adjusting screw tube that is in contact with the trunk.

[0020] The present invention relates to a crown fire simulation test device, wherein the bottom end of the threaded plug is provided with a chamfer.

[0021] This utility model discloses a crown fire simulation test device, in which a waste collection plate is provided at the bottom of a fixed support column, the fixed support column is fixedly connected to the waste collection plate, and the bottom of a reinforcing support rod is fixedly connected to the waste collection plate.

[0022] This utility model discloses a crown fire simulation test device, wherein four omnidirectional casters are arranged in a circular pattern on the waste receiving plate.

[0023] This utility model discloses a crown fire simulation test device, in which four pull handles are arranged in a circular pattern on the waste collection plate.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] The components are connected by threads, making the entire device easy to disassemble and assemble. This not only simplifies the installation and disassembly process but also reduces the size and weight of the equipment, improving its portability and facilitating transportation to different experimental sites. The threaded connection design enables a fast and stable assembly and disassembly process, greatly improving the portability and practicality of the equipment and meeting the needs of field testing in different locations. It is easy to disassemble, package, and transport, improving the repeatability and flexibility of experiments. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the fixed support column and the adjusting screw.

[0030] Figure 4 This is an enlarged structural diagram simulating a tree trunk mechanism;

[0031] Figure 5 yes Figure 2 Enlarged structural diagram of section A in the middle;

[0032] The following are labeled in the attached diagram: 11. Fixed support column; 12. Adjusting screw; 13. Adjusting screw tube; 14. Anti-loosening sleeve; 15. Reinforcing support rod; 16. Anti-loosening washer; 17. Waste collection tray; 18. Universal caster wheel; 19. Pull handle; 2. Simulated tree trunk mechanism; 21. Main trunk; 22. Support plate; 23. Fixing hoop; 24. Branch; 25. Threaded plug. Detailed Implementation

[0033] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0034] like Figures 1 to 5 As shown, the crown fire simulation test device of this utility model includes:

[0035] A fixed support column 11 is provided with a threaded hole inside the fixed support column 11;

[0036] Adjusting screw 12 is threaded into the threaded hole of fixed support column 11;

[0037] Adjusting screw 13, with a threaded hole inside, is threadedly fitted onto adjusting screw 12;

[0038] The simulated tree trunk mechanism 2 is mounted on the adjusting screw tube 13 and is used to support the simulated tree branches;

[0039] The simulated tree trunk mechanism 2 also includes:

[0040] Main trunk 21, with a threaded plug 25 at its bottom end, is threadedly inserted into the top of adjusting screw tube 13 via the threaded plug 25;

[0041] Several sets of branch and trunk simulation mechanisms are set on the main trunk 21;

[0042] The branch and trunk simulation mechanism includes:

[0043] Slide plate 22 is fixedly installed on the outer wall of the main trunk 21;

[0044] Both fixing hoops 23 are fixedly installed on the outer wall of the main trunk 21;

[0045] Branch 24 is configured as a bent tube with insertion holes. Branch 24 is inserted into fixing hoop 23 and supported by sliding plate 22.

[0046] The working process and principle of the device are as follows: By rotating the adjusting screw 12, it can move up and down in the threaded hole inside the fixed support column 11, thereby changing the height of the entire simulated tree trunk mechanism 2; the adjusting screw tube 13 is threaded onto the adjusting screw 12, further increasing the flexibility of height adjustment; it allows users to precisely adjust the height of the simulated tree trunk as needed to adapt to different experimental conditions; the branches 24 in the branch simulation mechanism are set in the form of curved tubes and are set on the main trunk 21 by fixing hoops 23. The branches 24 can be swung to different angles and positions in the fixing hoops 23 as needed, so that the distribution of the branches 24 is more consistent with the actual tree canopy. The device accurately adjusts the 24-degree angle of the branches to reflect their natural state, overcoming the limitations of traditional devices and better simulating the shape of a real tree crown. The threaded connections between components make the entire device easy to disassemble and assemble. This not only simplifies the installation and disassembly process but also reduces the size and weight of the equipment, improving its portability and facilitating transport to different experimental sites. The threaded connection design enables a fast and stable assembly and disassembly process, greatly improving the portability and practicality of the equipment and meeting the needs of field testing in different locations. The ease of disassembly, packaging, and transportation enhances the repeatability and flexibility of the experiments.

[0047] An anti-loosening sleeve 14 is provided on the threaded fitting of the adjusting screw 12. The anti-loosening sleeve 14 is used to lock the adjusting screw 12. When the height of the adjusting screw tube 13 is adjusted by rotating the adjusting screw 12, and thus the height of the simulated tree trunk mechanism 2 is adjusted to the required position, the anti-loosening sleeve 14 is used for locking. The anti-loosening sleeve 14 is rotated along the thread of the adjusting screw 12 to move it to the part that needs to be fixed until the anti-loosening sleeve 14 is in close contact with the fixed support column 11. Even if it is affected by external vibration, collision or other factors, the adjusting screw 12 will not easily rotate because the anti-loosening sleeve 14 has locked it, thus ensuring that the adjusting screw tube 13 and the entire simulated tree trunk mechanism 2 remain at the set height position without any height change. This not only enhances the stability and reliability of the equipment, but also improves its practicality and flexibility.

[0048] Four reinforcing struts 15 are arranged circumferentially on the fixed support column 11. The reinforcing struts 15 are used to enhance the support strength of the fixed support column 11. When the reinforcing struts 15 are installed, they form a stable foundation. This not only increases the support area but also disperses the force acting on the fixed support column, reducing the pressure of single-point load. During the experiment, whether adjusting the height or angle of the simulated tree trunk or simulating the spread of flames, the reinforcing struts 15 can effectively prevent the fixed support column 11 from tilting or displacing, thus ensuring the stability of the entire simulation device. By adding four reinforcing struts 15, the range of the support foundation is significantly expanded, which can effectively reduce the overturning moment of the fixed support column 11 caused by external loads, thereby improving the overturning resistance of the overall structure. The reinforcing struts 15 help to disperse the stress originally concentrated at the bottom of the fixed support column to a larger area, reducing local stress concentration and lowering the risk of structural failure.

[0049] An anti-loosening washer 16 is provided at the contact end between the adjusting screw tube 13 and the main shaft 21. When a pre-tightening force is applied, the anti-loosening washer 16 undergoes a slight deformation, filling the tiny gap between the main shaft 21 and the adjusting screw tube 13, thereby significantly increasing the friction of the contact surfaces and preventing loosening caused by vibration. In addition to increasing friction, the anti-loosening washer 16 can also help to evenly distribute the pressure acting on the connection point, reduce local stress concentration, reduce the possibility of material fatigue, and extend the service life of the device. In a dynamic experimental environment, the anti-loosening washer 16 can play a certain role in shock absorption, absorbing this vibration energy and preventing it from being transmitted to the connection point and causing loosening, thus ensuring the consistency and repeatability of experimental conditions.

[0050] The bottom end of the threaded plug 25 is chamfered. During the insertion of the threaded plug 25 of the main body 21 into the adjusting screw tube 13, the chamfer first contacts the inlet of the adjusting screw tube 13. As the insertion proceeds, the chamfer guides the threaded plug 25 into the threaded hole of the adjusting screw tube 13, allowing the threads of both to align and mesh more smoothly. As the threaded plug 25 rotates into the adjusting screw tube 13, the chamfer continues to guide, preventing the bottom edge of the threaded plug 25 from hardly colliding or getting stuck with the threaded hole inlet of the adjusting screw tube 13, making the insertion and tightening actions smoother. This reduces the possibility of deviation or misalignment during insertion and improves the accuracy and efficiency of assembly.

[0051] A waste collection tray 17 is provided at the bottom of the fixed support column 11, and the fixed support column 11 is fixedly connected to the waste collection tray 17. The bottom of the reinforcing support rod 15 is also fixedly connected to the waste collection tray 17. During the crown fire simulation experiment, any falling combustion residue or experimental waste will fall into the waste collection tray 17 instead of directly contacting the ground or other surfaces. This helps protect the environment and avoids the spread of possible pollution or fire hazards. After the experiment, the waste collection tray 17 can be easily removed and cleaned to ensure that there are no residues inside, preparing it for the next experiment. The waste collection tray 17 serves as a centralized waste collection area, preventing combustion residues generated during the experiment from scattering into the surrounding environment and improving safety.

[0052] The waste receiving tray 17 is equipped with four omnidirectional casters 18 arranged in a circle. When the entire experimental device needs to be moved from one position to another, the device can be pulled, and then the omnidirectional casters 18 can be used to easily change the direction, achieving omnidirectional movement without lifting the device. This improves the portability of the entire device, allowing researchers to move the device more easily between different experimental sites. The omnidirectional casters allow the device to move freely in any direction without needing to readjust the device's orientation, which not only improves work efficiency but also reduces the time wasted due to frequent adjustments to the device's position.

[0053] The waste receiving tray 17 is equipped with four pull handles 19 arranged in a circle. When the entire experimental device needs to be moved from one position to another, the user can move the device as a whole by holding and pulling these pull handles 19. When the device needs to be loaded onto a vehicle for transportation or unloaded, the pull handles 19 provide convenient gripping points for the operator, simplifying the loading and unloading process, reducing manpower requirements, and improving work efficiency.

[0054] The crown fire simulation test device of this utility model can be installed, connected or set up in a common mechanical way, and can be implemented as long as it can achieve its beneficial effect.

[0055] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A tree crown fire simulation test device, characterized by, It includes: A fixed support column is internally provided with a threaded hole; Adjusting screw, the adjusting screw is threaded into the threaded hole of the fixed support column; Adjusting screw pipe, the adjusting screw pipe is internally provided with a threaded hole, and the adjusting screw pipe is threaded on the adjusting screw; The simulated trunk mechanism is provided on the adjusting screw pipe and used for carrying simulated branches; The simulated trunk mechanism further includes: A main trunk is provided with a threaded plug at the bottom end, and the main trunk is threaded into the top of the adjusting screw pipe through the threaded plug; A plurality of groups of branch trunk simulation mechanisms are arranged on the main trunk; The branch trunk simulation mechanism includes: A drag plate is fixedly installed on the outer side wall of the main trunk; Two fixed hoops are fixedly installed on the outer side wall of the main trunk; The branch is provided as an elbow pipe, the branch is provided with a branch insertion hole, the branch is inserted into the fixed hoop, and the branch is supported by the drag plate.

2. The tree crown fire simulation test apparatus according to claim 1, wherein A locking sleeve is arranged on the adjusting screw, and the locking sleeve is used for locking the adjusting screw.

3. The tree-top fire simulation test apparatus according to claim 1, wherein Four reinforcing struts are arranged on the circumference of the fixed support column, and the reinforcing struts are used to strengthen the support strength of the fixed support column.

4. The tree-top fire simulation test apparatus according to claim 1, wherein The adjusting screw pipe is provided with a locking washer at the abutting end of the main trunk.

5. The tree-top fire simulation test apparatus according to claim 1, wherein The threaded plug is provided with a chamfer at the bottom end.

6. The tree-top fire simulation test apparatus according to claim 3, wherein The bottom end of the fixed support column is provided with a waste receiving disc, the fixed support column is fixedly connected with the waste receiving disc, and the bottom end of the reinforcing strut is fixedly connected with the waste receiving disc.

7. The tree crown fire simulation test apparatus according to claim 6, wherein Four universal moving wheels are arranged on the circumference of the waste receiving disc.

8. The tree-top fire simulation test apparatus according to claim 6, wherein Four pulling handles are arranged on the circumference of the waste receiving disc.

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