CN214794652U - Flame-retardant wood combustion test device - Google Patents

Abstract

The utility model relates to a fire-retardant timber burning test device is applied to timber burning test technical field, and it includes the base and sets up the bracing piece on the base, be equipped with on the bracing piece and be used for placing ligneous support ring, the bracing piece is equipped with between support ring and base and is used for burning ligneous combustor, be equipped with the regulation and control subassembly that is used for adjusting combustor flame temperature on the base. This application can reach the effect that flame temperature can be regulated and control through regulation and control subassembly for the temperature of flame is visual, and the operator of being convenient for adjusts the temperature of flame, has reduced the experimental condition emergence that is influenced by flame temperature, is favorable to improving the accuracy of test data.

Description

Flame-retardant wood combustion test device

Technical Field

The application relates to the technical field of wood burning tests, in particular to a flame-retardant wood burning test device.

Background

With the rapid development of the construction industry, the requirements on building materials are higher and higher, and the fire resistance of wood is higher and higher, so the flammability test of wood becomes a large standard in the industry.

In the flammability test of the wood, firstly, the wood with the thickness of 20mm and the right quadrilateral section is selected as a raw material for the test, a plurality of roots of the wood are prepared, then the selected wood is subjected to flame-retardant dipping treatment, the wood is stacked in a manner of a wood stack method, then the stacked wood is combusted, finally, the combustion quality loss rate and the flaming combustion time of the wood are calculated, and then the combustion quality loss rate and the flaming combustion time are compared with the industry standard value, so that the conclusion is obtained.

In view of the above-mentioned related technologies, the inventor believes that, during the combustion of the flame, since it is difficult for the operator to control the combustion temperature of the flame, the flame is easily affected by the temperature of the flame during the test, and thus the accuracy of the test data is not high.

SUMMERY OF THE UTILITY MODEL

In order to improve the temperature that the operator is difficult to flame burning and control, receive flame temperature's influence very easily in the test process, lead to the not high problem of test data accuracy, this application provides a fire-retardant timber combustion test device.

The application provides a fire-retardant timber burning test device adopts following technical scheme:

the utility model provides a fire-retardant timber burning test device, includes the base and sets up the bracing piece on the base, be equipped with on the bracing piece and be used for placing ligneous support ring, the bracing piece is equipped with between support ring and base and is used for burning ligneous combustor, be equipped with the regulation and control subassembly that is used for adjusting combustor flame temperature on the base.

By adopting the technical scheme, in the wood combustibility test, an operator firstly ignites the igniter, and then the operator adjusts the temperature of the flame to the temperature of the industrial standard through the adjusting and controlling assembly, so that the flame temperature can be adjusted and controlled, the temperature of the flame can be visualized, the operator can adjust the temperature of the flame conveniently, the condition that the test is influenced by the flame temperature is reduced, and the accuracy of test data is improved; the operator then stacks the wood on the support ring so that the flame conducts a burn test on the wood.

Optionally, the regulation and control assembly includes a flow meter for regulating the flame temperature of the burner, a temperature sensor for detecting the temperature is arranged on the support rod, and a temperature display is electrically connected to the temperature sensor.

Through adopting above-mentioned technical scheme, at the in-process of control combustor flame temperature, the operator arranges temperature sensor in the top of flame, make the temperature of flame show on temperature display, in order to reach the visual effect of the temperature of flame, the operator can pass through the flow of flowmeter control gas this moment, thereby be convenient for the operator to control the release amount of gas, and then be convenient for the operator to adjust the combustion strength of flame, the combustion strength of flame is stronger the higher the temperature is, the combustion strength of flame is weaker the temperature is lower more, in order to make things convenient for the operator to adjust the temperature of flame, be favorable to improving test data's accuracy.

Optionally, the support rod is provided with a protective cover at a side of the support ring departing from the base.

Through adopting above-mentioned technical scheme, set up the protection casing and can make flame burn in certain space to it is influenced by external air current to reduce flame, leads to the unstable condition of flame temperature to take place, and can reduce the inaccurate condition of test data and take place.

Optionally, a positioning cylinder is sleeved on the supporting rod, the positioning cylinder is rotatably arranged on the supporting rod, and the supporting ring is fixed on the positioning cylinder.

Through adopting above-mentioned technical scheme, in the experiment, the operator can promote the support ring to rotate on the bracing piece through a location section of thick bamboo, make support ring and combustor skew, the operator can stack timber on the support ring this moment, the convenience of timber stack has been improved, the operator lights the combustor earlier simultaneously, make the abundant burning back of flame, and when the temperature of flame reached stable value, the operator promotes the central point that the support ring reaches the combustor and puts, make flame burn timber, and then the stability of burning has been promoted, further improve the accuracy of test data.

Optionally, a limiting part for fixing the positioning cylinder is arranged on the supporting rod.

Through adopting above-mentioned technical scheme, when a location section of thick bamboo rotated on the bracing piece, the locating part was spacing to a location section of thick bamboo to can restrict the moving direction of a spacing section of thick bamboo, take place with the condition that reduces a location section of thick bamboo and follow the vertical direction gliding of bracing piece.

Optionally, the limiting part includes a positioning plate sleeved on the support rod, the positioning plate is located between the positioning cylinder and the base, the positioning plate is radially provided with a threaded hole, and a tightening bolt is connected to the threaded hole through an internal thread.

Through adopting above-mentioned technical scheme, the operator rotates and supports tight bolt, make to support tight bolt and support tightly on the bracing piece, thereby fix the positioning disk, and be convenient for the operator quick fix the positioning disk, the holding ring is contradicted on the upper surface of positioning disk simultaneously, thereby the positioning disk has played spacing effect to a location section of thick bamboo, with the possibility that gliding appears in the reduction location section of thick bamboo, and the operator can adjust the height of positioning disk according to the height of support ring, the convenience of experimental operation has been improved.

Optionally, one side of the positioning plate, which is away from the base, is provided with a guide cylinder, the guide cylinder is sleeved on the supporting rod, the guide cylinder is sleeved on the guide cylinder, and one end of the guide cylinder, which is far away from the positioning plate, is in threaded connection with a tightening nut.

Through adopting above-mentioned technical scheme, the operator rotates and supports tight nut, supports tight nut and can support a location section of thick bamboo under the effect of screw thread tightly on the positioning disk to play fixed effect to a location section of thick bamboo, and then increase the stability of support ring, in order to reduce timber at the in-process of burning, the possibility of deflection appears in the support ring.

Optionally, one side of the positioning disc, which is far away from the base, is provided with a limiting rod, and the positioning cylinder is provided with a shifting rod.

Through adopting above-mentioned technical scheme, the operator rotates when supporting ring is close to flame, the driving lever is close to the gag lever post to continuous, when being located same vertical line with the center of support ring until the center of combustor, the driving lever is contradicted on the gag lever post, the gag lever post restricts the turned angle of a location section of thick bamboo through the driving lever this moment, thereby played spacing effect to the support ring, and then be convenient for the operator fast convenient with the center of support ring and the center alignment of combustor, appear changeing in order to reduce the support ring, lead to the unsafe condition of test data to take place.

Optionally, the limiting member includes two limiting clips, the two limiting clips are respectively fastened on the support rod, the support rod is provided with a plurality of clamping grooves along the length direction, the limiting clip is provided with a clamping block matched with the clamping grooves, and the limiting clip is arranged between the base and the positioning cylinder; the limiting clamp is characterized in that two baffle plates are arranged at two ends of the limiting clamp along the length direction, two guide rods penetrate through two opposite baffle plates in the limiting clamp simultaneously, two pressing plates are arranged at two ends of each guide rod, and abutting springs are sleeved on the guide rods between the pressing plates and the baffle plates.

Through adopting above-mentioned technical scheme, the operator is with two spacing cards lock on the bracing piece simultaneously, baffle and clamp plate compress to supporting tight spring this moment, it has elastic restoring force to support tight spring to be compressed, and for under the effect of elastic restoring force, it is close to each other to support tight spring promotion two spacing cards, make two spacing cards hug closely on the bracing piece simultaneously, the fixture block inlays and locates in the draw-in groove simultaneously, the draw-in groove is used the fixture block and is restricted the moving direction of spacing card, take place along the condition that bracing piece axis direction removed with reducing spacing card, thereby spacing card has played spacing effect to the location section of thick bamboo, and then spacing card restricts the moving direction of a location section of thick bamboo, the possibility of gliding appears with reducing the support ring.

Optionally, be equipped with on the base and be used for driving combustor pivoted driving piece, the driving piece is including the rolling disc of cover on locating the bracing piece, the combustor is fixed in on the rolling disc, the bracing piece is equipped with the bearing at one side cover of rolling disc towards the base, the rolling disc is fixed in on the bearing, be equipped with servo motor on the base, all the cover is equipped with a gear, two on servo motor's the output shaft and the bearing the gear meshes mutually.

Through adopting above-mentioned technical scheme, the operator starts servo motor, and servo motor passes through gear drive bearing and rotates to the bearing drives the rolling disc and rotates, and then is convenient for drive support ring and rotates, in order to reach automatic effect, improves experimental convenience.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the flame temperature can be regulated and controlled by the regulating and controlling assembly, so that the flame temperature is visualized, an operator can conveniently regulate the flame temperature, the condition that the test is influenced by the flame temperature is reduced, and the accuracy of test data is improved;

2. the movement direction of the limiting cylinder can be limited through the limiting part, so that the situation that the positioning cylinder slides down along the vertical direction of the supporting rod is reduced;

3. the supporting ring is driven to rotate by the driving piece so as to achieve an automatic effect and improve the convenience of the test.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present application.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic structural diagram for embodying a driving member in embodiment 1 of the present application.

Fig. 4 is an enlarged schematic view of a portion B in fig. 3.

Fig. 5 is an enlarged schematic view of a portion C in fig. 1.

Fig. 6 is a schematic view of the overall structure of embodiment 2 of the present application.

Fig. 7 is an exploded schematic view of a stopper according to embodiment 2 of the present application.

Description of reference numerals: 1. a base; 11. a support bar; 111. a card slot; 12. a support ring; 121. a positioning cylinder; 122. a deflector rod; 13. a burner; 131. a connecting plate; 14. a protective cover; 141. an observation window; 15. a support frame; 16. an igniter; 17. a control box; 18. an air duct; 181. a fixed tube; 182. a connecting hose; 183. an adapter; 2. a regulatory component; 21. a flow meter; 22. a temperature sensor; 23. a temperature display; 3. a limiting member; 31. positioning a plate; 311. a threaded hole; 32. tightly abutting against the bolt; 33. a guide cylinder; 34. tightly abutting the nut; 35. a limiting rod; 4. a limiting card; 401. a limiting groove; 41. a baffle plate; 42. a guide bar; 43. pressing a plate; 44. the spring is tightly propped; 45. a clamping block; 46. a propping block; 47. a return spring; 5. a drive member; 51. rotating the disc; 52. a bearing; 53. a servo motor; 54. a gear; 55. a first contact switch; 56. a second contact switch; 57. a contact lever; 6. a fixing member; 61. a fixed cylinder; 62. and (5) fixing the bolt.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses fire-retardant timber burning test device.

Example 1

Referring to fig. 1, the flame retardant wood burning test device includes a base 1 and a support rod 11 fixed at one end of the base 1 along the length direction, the support rod 11 is a circular cylinder, and the support rod 11 is perpendicular to the base 1. One end of the support bar 11 close to the base 1 is provided with a burner 13, and the burner 13 is connected with a gas tank through a gas guide tube 18. The combustor 13 is rotatably arranged on the support rod 11 through a connecting plate 131, an opening of the combustor 13 is far away from the base 1, the connecting plate 131 is fixed at the bottom of the combustor 13, and the base 1 is provided with a driving part 5 for driving the combustor 13 to rotate. While an igniter 16 for ignition is provided on the base 1.

Referring to fig. 1, the supporting rod 11 is provided with a supporting ring 12 at an end of the burner 13 away from the base 1, the supporting ring 12 is rotatably connected to the supporting rod 11 through a positioning cylinder 121, and the supporting ring 12 is fixed to the positioning cylinder 121 through a connecting rod. One side of the support ring 12 departing from the base 1 is provided with a support frame 15 for placing wood, and the support frame 15 is placed on the support ring 12. The support bar 11 is provided with a protective cover 14 on the side of the support ring 12 facing away from the base 1, an opening is provided on the side wall of the protective cover 14, and an observation window 141 for closing the opening is provided on the protective cover 14. The end of the base 1 far away from the support rod 11 is provided with a control box 17, and a regulating and controlling assembly 2 for controlling the flame temperature of the burner 13 is arranged in the control box 17.

In a normal state, the protective cover 14, the support ring 12 and the burner 13 are all positioned between the support rod 11 and the control box 17, and the central line of the protective cover 14 and the central line of the support ring 12 are positioned on the same vertical line with the central line of the burner 13.

During testing, the operator rotates the support ring 12 clockwise so that the support ring 12 is removed from the bottom of the shield 14. Then, the operator stacks wood on the support frame 15, a plurality of pieces of wood are stacked in a shape like a Chinese character jing, and after the wood stacking is completed, the operator places the support frame 15 on the support ring 12. The support frame 15 can limit the wood at this time, so that the stability of placing the wood is improved, and the possibility of falling off of the wood in the test process is reduced.

The operator activates the driver 5 so that the driver 5 drives the burner 13 to rotate 90 ° counterclockwise, the burner 13 is ignited by the igniter 16, and the burner 13 is driven to rotate back to the center position of the protective cover 14 again by the driver 5. The operator can then adjust the temperature of the flame by means of the regulating assembly 2. When the flame temperature reaches the specified value and is stable, the operator rotates the support ring 12 to move towards the center of the protective cover 14, so that the support frame 15 and the wood enter the center of the protective cover 14 through the opening of the protective cover 14 to perform a combustion test, and the operation is convenient and fast. The operator closes the opening of the protection cover 14 through the observation window 141, so that the protection cover 14 protects the flame to reduce the influence of the outside air flow on the flame.

Referring to fig. 1, the regulating and controlling assembly 2 comprises a flow meter 21, a temperature sensor 22 and a temperature display 23, wherein the flow meter 21 and the temperature display 23 are both fixed on the control box 17, and the flow meter 21 is connected with the air duct 18. The temperature sensor 22 is fixed on the support bar 11 and electrically connected with the temperature display 23, and the probe of the temperature sensor 22 is positioned above the protective cover 14. In the combustion process of the burner 13, the probe of the temperature sensor 22 detects the temperature of the flame, and the temperature of the flame is displayed through the temperature display 23, so that the temperature of the flame achieves the visual effect. At this moment, an operator controls the flow of the fuel gas through the flow meter 21, when the fuel gas flow is increased, the combustion intensity of the flame is enhanced, so that the temperature is increased, and when the fuel gas flow is reduced, the combustion intensity of the flame is weakened, so that the temperature is reduced, the effect of adjusting the temperature of the flame is achieved, and the accuracy of test data is improved.

Referring to fig. 1, the temperature sensor 22 and the shield 14 are fixed to the support rod 11 by the fixing members 6, three fixing members 6 are arranged along the axial direction of the support rod 11, one fixing member 6 is used for fixing the temperature sensor 22, the other two fixing members 6 are used for fixing the shield 14, and the two fixing members 6 are arranged along the vertical direction of the shield 14. The fixing member 6 includes a fixing cylinder 61 sleeved on the support rod 11, and a fixing bolt 62 for abutting against the support rod 11 is connected to the fixing cylinder 61 through a thread. On the solid fixed cylinder 61 was fixed in temperature sensor 22 or protection casing 14, the operator rotated fixing bolt 62 for fixing bolt 62 supported tightly on bracing piece 11, can fix solid fixed cylinder 61, thereby be convenient for the operator fix protection casing 14 or temperature sensor 22 fast convenient. Meanwhile, an operator can push the fixing barrel 61 to slide along the axial direction of the supporting rod 11, so that the effect of adjusting the height of the protective cover 14 or the temperature sensor 22 is achieved, and the convenience of test operation is further improved.

Referring to fig. 1 and 2, the supporting rod 11 is provided with a limiting member 3 for limiting the supporting ring 12, the limiting member 3 includes a positioning plate 31 sleeved on the supporting rod 11, the positioning plate 31 is in a circular plate shape, a threaded hole 311 is formed in a side wall of the positioning plate 31 in the circumferential direction, and the threaded hole 311 is formed in the radial direction of the positioning plate 31. The side wall of the positioning plate 31 is provided with a tightening bolt 32 for abutting against the support rod 11, and the tightening bolt 32 is connected to the positioning plate 31 through a threaded hole 311 in a threaded manner. The operator rotates the tightening bolt 32 to make the tightening bolt 32 tighten on the support rod 11, so as to achieve the effect of fixing the positioning plate 31.

Referring to fig. 1 and 2, the support rod 11 is sleeved with a guide cylinder 33 on one side of the positioning plate 31 departing from the base 1, the guide cylinder 33 is fixed on the positioning plate 31, the positioning cylinder 121 is sleeved on the guide cylinder 33, and the positioning cylinder 121 is rotatably arranged on the guide cylinder 33. The guiding cylinder 33 is sleeved with a tightening nut 34 at one end of the positioning cylinder 121 far away from the positioning disc 31, and the tightening nut 34 is in threaded connection with the guiding cylinder 33. Meanwhile, the rotating disc 51 is provided with a limiting rod 35 on one side departing from the base 1, the axis of the limiting rod 35 is parallel to the axis of the supporting rod 11, the positioning cylinder 121 is fixedly connected with a shifting rod 122 which is used for abutting against the limiting rod 35, and the shifting rod 122 is arranged along the radial direction of the positioning cylinder 121.

Referring to fig. 1 and 2, during the process of rotating the support ring 12, the operator pushes the shift lever 122, the shift lever 122 drives the positioning cylinder 121 to rotate on the guide cylinder 33, and at this time, the positioning disc 31 limits the moving direction of the positioning cylinder 121, so as to reduce the possibility that the positioning cylinder 121 slides down on the support rod 11. When the center of the support ring 12 is aligned with the center of the shield 14, the shift lever 122 abuts against the limiting rod 35, so that the limiting rod 35 limits the moving direction of the shift lever 122, the shift lever 122 is limited, and the support ring 12 is conveniently and rapidly aligned with the shield 14, so that the possibility of over-rotation during rotation is reduced. Meanwhile, an operator can rotate the tightening nut 34, so that the tightening nut 34 tightens the positioning cylinder 121 on the positioning disc 31, and the stability between the positioning cylinder 121 and the supporting rod 11 is increased, so as to reduce the possibility of deflection of the supporting ring 12 in the burning process of wood.

Referring to fig. 3 and 4, the driving member 5 includes a rotating disc 51 sleeved on the supporting rod 11, and the connecting plate 131 is fixed on the rotating disc 51. The support rod 11 is sleeved with a bearing 52 between the rotating disc 51 and the base 1, and the bearing 52 is a linear bearing 52. And the inner ring of the bearing 52 is fixed to the support rod 11 and the rotating disc 51 is fixed to the outer ring of the bearing 52. The base 1 is fixedly connected with a servo motor 53, an output shaft of the servo motor 53 and the bearing 52 are both sleeved with a gear 54, and the two gears 54 are meshed with each other. The operator starts the servo motor 53, the servo motor 53 drives the bearing 52 to rotate through the gear 54, and the bearing 52 drives the rotating disc 51 to rotate, so as to achieve the effect of driving the burner 13 to rotate.

Referring to fig. 4 and 5, the side of the rotary disc 51 away from the servo motor 53 is inserted into a contact rod 57, and the axis of the contact rod 57 is parallel to the axis of the support rod 11. The base 1 is connected with a mounting plate on both sides of the contact rod 57 along the vertical direction, wherein one mounting plate is fixedly connected with a first contact switch 55, and the other mounting plate is fixedly connected with a second contact switch 56. The second contact switch 56 is electrically connected to a solenoid valve which is connected to the air duct 18. When the contact lever 57 abuts on the first contact switch 55, the solenoid valve is opened and the igniter 16 ignites the burner 13; when the contact switch abuts against the second contact switch 56, the burner 13 is rotated to the center position of the protection cover 14 and the servo motor 53 is de-energized.

Referring to fig. 4 and 5, during the test, the operator activates the servo motor 53 to drive the burner 13 to rotate 90 ° counterclockwise, so that the burner 13 moves to the lower part of the igniter 16, the contact rod 57 abuts against the first contact switch 55, and the first contact switch 55 opens the electromagnetic valve and controls the igniter 16 to ignite the burner 13. After the ignition is finished, the servo motor 53 drives the igniter 16 to rotate to the central position of the protective cover 14, meanwhile, the contact rod 57 is abutted to the second contact switch 56, and the servo motor 53 is powered off, so that the automatic control effect is achieved, and the test convenience is improved.

Referring to fig. 1 and 5, the air guide tube 18 includes a fixing tube 181 and a connection hose 182, the fixing tube 181 is fixed to the connection plate 131 and the rotary disk 51 by an adapter 183, and the adapter 183 is provided in two, one of which is threadedly coupled to the rotary disk 51 and the other of which is threadedly coupled to the connection plate 131. One end of the connection hose 182 is connected to the adapter 183 of the rotary disk 51, and the other end is inserted into the base 1, extends into the control box 17 through the base 1, and is connected to the gas tank through the control box 17. At this time, the flow meter 21 and the electromagnetic valve are both connected to the connection hose 182, so that the purpose of supplying gas to the burner 13 is achieved, and the flow meter 21 can control the flow rate of the gas conveniently. And the connecting hose 182 itself is softer during rotation of the rotary disk 51 to increase the smoothness of the rotation of the rotary disk 51.

The implementation principle of the embodiment 1 is as follows: during the test, the operator first places the wood on the support 15 and stacks the wood in order. The operator then pushes the support ring 12 via the lever 122 to rotate counterclockwise so that the support ring 12 disengages from the center of the shield 14 and the operator places the support bracket 15 on the support ring 12. The operator then activates the servo motor 53, and the servo motor 53 drives the burner 13 to rotate 90 ° counterclockwise, so that the igniter 16 ignites the burner 13, and the burner 13 is driven by the servo motor 53 to rotate to the center position of the protection cover 14. At this time, the temperature sensor 22 checks the temperature of the flame, the temperature of the flame is displayed on the temperature display 23, and the operator adjusts the flow meter 21 based on the displayed temperature, and controls the ventilation amount of the burner 13 by the flow meter 21. Until the flame temperature reaches the standard and stabilizes, the operator rotates the support ring 12 to move to the center position of the protection cover 14, and closes the observation window 141 to perform the combustion test.

Example 2

Referring to fig. 6 and 7, the difference between the embodiment and embodiment 1 is that the limiting member 3 includes two limiting clips 4, the two limiting clips 4 have the same size and are both arc-shaped, and the two limiting clips 4 are fastened on the supporting rod 11. The support rod 11 is provided with two sets of slots 111 along the vertical direction, and the two sets of slots 111 are symmetrically arranged along the axis of the support rod 11. A plurality of clamping grooves 111 are uniformly arranged along the length direction of the supporting rod 11. The opposite side walls of the two limit cards 4 are respectively provided with a fixture block 45 matched with the clamping groove 111, and the fixture block 45 is inserted into the clamping groove 111, so that the moving direction of the limit cards 4 is limited through the clamping groove 111. Two ends of the two limit clamps 4 are respectively provided with a baffle plate 41, and two opposite baffle plates 41 in the two limit clamps 4 are simultaneously provided with a guide rod 42 in a penetrating manner. The guide rod 42 is fixedly connected with a pressing plate 43 on one side of the two baffles 41 which are deviated from each other, a resisting spring 44 is sleeved on the guide rod 42 between the pressing plate 43 and the baffles 41, one end of the resisting spring 44 is propped against the pressing plate 43, the other end of the resisting spring 44 is propped against the baffles 41, and the resisting spring 44 is always in a partial compression state.

A limiting groove 401 is opened at one end of the limiting card 4 close to the protective cover 14 far away from the base 1, a supporting block 46 is arranged in the limiting groove 401 in a sliding mode, a return spring 47 is arranged between the supporting block 46 and the bottom wall of the limiting groove 401, one end of the return spring 47 is fixed on the bottom wall of the limiting groove 401, and the other end of the return spring is fixed on the supporting block 46. One end of the abutting block 46, which is far away from the return spring 47, extends out of the limit card 4 and is hemispherical. One end of the positioning cylinder 121, which is close to one side of the support ring 12 and faces the limit card 4, is provided with a tightening groove matched with the tightening block 46, and the longitudinal section of the tightening groove is semicircular.

In the process of fixing the limit cards 4, the operator fastens the two limit cards 4 on the support bar 11 at the same time. And the fixture block 45 is inserted into the fixture groove 111, so that the fixture groove 111 limits the moving direction of the limiting card 4 through the fixture block 45, and the effect of fixing the limiting card 4 is achieved. At this time, the abutting spring 44 is compressed to have elastic restoring force, and under the action of the elastic restoring force, the abutting spring 44 always pushes the two limiting clamps 4 to abut against the supporting rod 11, so that the situation that the clamping block 45 is separated from the clamping groove 111 is reduced, and the limiting clamps 4 limit the positioning barrel 121, so that the situation that the positioning barrel 121 slides down along the supporting rod 11 is reduced.

Because the positioning cylinder 121 always abuts against the limiting clamp 4, the positioning cylinder 121 always abuts against the abutting block 46 against the limiting groove 401, so that the abutting block 46 compresses the return spring 47, and the return spring 47 has elastic restoring force after being compressed. When an operator rotates the support ring 12 to move to the center position of the protective cover 14, the abutting groove is aligned with the limiting groove 401, and the return spring 47 pushes the abutting block 46 to abut against the abutting groove under the action of elastic restoring force, so that the resistance between the limiting card 4 and the positioning cylinder 121 is increased, the positioning cylinder 121 is limited, and the possibility of over rotation of the support ring 12 is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a fire-retardant timber burning test device which characterized in that: including base (1) and bracing piece (11) of setting on base (1), be equipped with on bracing piece (11) and be used for placing ligneous support ring (12), bracing piece (11) are equipped with between support ring (12) and base (1) and are used for burning ligneous combustor (13), be equipped with on base (1) and be used for adjusting regulation and control subassembly (2) of combustor (13) flame temperature.

2. The flame-retardant wood burning test device according to claim 1, characterized in that: regulation and control subassembly (2) are including being used for adjusting flowmeter (21) of combustor (13) flame temperature, be equipped with temperature sensor (22) that are used for detecting the temperature on bracing piece (11), temperature sensor (22) electricity is connected with temperature display (23).

3. The flame-retardant wood burning test device according to claim 1, characterized in that: the supporting rod (11) is provided with a protective cover (14) at one side of the supporting ring (12) deviating from the base (1).

4. The flame-retardant wood burning test device according to claim 1, characterized in that: the support rod (11) is sleeved with a positioning cylinder (121), the positioning cylinder (121) is rotatably arranged on the support rod (11), and the support ring (12) is fixed on the positioning cylinder (121).

5. The flame-retardant wood burning test device according to claim 4, wherein: the supporting rod (11) is provided with a limiting piece (3) used for fixing the positioning cylinder (121).

6. The flame-retardant wood burning test device according to claim 5, wherein: the limiting piece (3) comprises a positioning disc (31) sleeved on the supporting rod (11), the positioning disc (31) is located between the positioning cylinder (121) and the base (1), the positioning disc (31) is radially provided with a threaded hole (311), and the threaded hole (311) is internally connected with a clamping bolt (32).

7. The flame-retardant wood burning test device according to claim 6, wherein: one side that positioning disk (31) deviates from base (1) is equipped with guide cylinder (33), support bar (11) are located to guide cylinder (33) cover, guide cylinder (33) are located to a position section of thick bamboo (121) cover, the one end threaded connection that positioning disk (31) was kept away from in guide cylinder (33) of guide cylinder (33) has and supports tight nut (34).

8. The flame-retardant wood burning test device according to claim 6, wherein: one side of the positioning disc (31) departing from the base (1) is provided with a limiting rod (35), and the positioning cylinder (121) is provided with a shifting rod (122).

9. The flame-retardant wood burning test device according to claim 5, wherein: the limiting piece (3) comprises two limiting cards (4), the two limiting cards (4) are buckled on the supporting rod (11), the supporting rod (11) is provided with a plurality of clamping grooves (111) along the length direction, the limiting card (4) is provided with a clamping block (45) matched with the clamping grooves (111), and the limiting card (4) is arranged between the base (1) and the positioning cylinder (121);

spacing card (4) all are equipped with a baffle (41) along length direction's both ends, two wear to be equipped with a guide bar (42) simultaneously on two relative baffles (41) in spacing card (4), the both ends of guide bar (42) all are equipped with a clamp plate (43), guide bar (42) are equipped with between clamp plate (43) and baffle (41) and support tight spring (44) to the cover.

10. The flame-retardant wood burning test device according to claim 8, wherein: be equipped with on base (1) and be used for driving combustor (13) pivoted driving piece (5), rolling disc (51) on bracing piece (11) is located including the cover in driving piece (5), combustor (13) are fixed in on rolling disc (51), bracing piece (11) are equipped with bearing (52) in rolling disc (51) towards one side cover of base (1), rolling disc (51) are fixed in on bearing (52), be equipped with servo motor (53) on base (1), all overlap on the output shaft of servo motor (53) and bearing (52) and be equipped with one gear (54), two gear (54) mesh mutually.

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