CN211486326U - Telescopic mechanism of fire extinguishing head in special flame retardant device for sponge - Google Patents

Abstract

The utility model provides a telescopic machanism of fire extinguishing head among special fire-retardant device of sponge belongs to sponge production facility technical field. The telescopic mechanism comprises at least two chains with only one plane freedom degree of movement, winding wheels in one-to-one correspondence with the chains and a synchronous structure capable of driving the winding wheels to rotate synchronously and in the same direction, the movable planes of the chains are mutually crossed, one ends of the chains are fixed with the corresponding winding wheels, the other ends of the chains are connected onto the same mounting frame, and one winding wheel is controlled to rotate through a motor. The utility model has the advantages of small size, wide extension range and the like.

Description

Telescopic mechanism of fire extinguishing head in special flame retardant device for sponge

Technical Field

The utility model belongs to the technical field of sponge production facility, a telescopic machanism of fire extinguishing head among special fire-retardant device of sponge is related to.

Background

The sponge belongs to inflammables, in the production process, accumulational sponge leads to ventilating not smooth and spontaneous combustion easily, from inside to outside burning also takes place easily in the foam molding process, put out a fire very difficultly after the sponge burning, on the one hand, the permeability of sponge is relatively poor, gaseous or liquid flame retardant medium is difficult to get into in the short time, plus high temperature orders about, the degree of difficulty that flame retardant medium got into the sponge inside is bigger, on the other hand, cause splash easily among the sponge burning process, high temperature material such as stream of lying, cause the damage to fire control operation personnel easily, current fire extinguisher all is direct spray type fire extinguisher, the operation is on the sponge surface, be difficult to reach the effect of high-efficient fire extinguishing, although the jet distance is far away, but, be the dispersion form at the injection end, pressure is relatively less, can't put out.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that exists to current technique, provide a telescopic machanism of fire extinguishing head among the special fire-retardant device of sponge, the utility model discloses the technical problem that will solve is how to save space, and flexible wide range.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a telescopic machanism of fire extinguishing head among special fire-retardant device of sponge, its characterized in that, telescopic machanism includes the chain of two at least only one plane activity degree of freedom, with the take-up pulley of chain one-to-one and can order about the synchronous syntropy rotatory synchronizing structure of each take-up pulley, the activity plane intercrossing of each chain, the one end of chain is fixed with the take-up pulley that corresponds with it, each the other end of chain is connected on same mounting bracket, and one of them take-up pulley is rotatory through a motor control.

Because the chain is the flexible chain in the single plane, the pivot of chain is parallel to each other, the ordinary flexible chain structure that has of chain link end to end, and many chains are injectd at the tip, and under the condition that the degree of freedom plane is not in the coplanar, the overall structure that comprises many chains, when its one end takes place to roll up, the other end is for straight stretching out or withdrawing, can realize the effect of sharp propelling movement or pull back mounting panel.

Furthermore, the number of the chains is three, and the included angle between the movable planes of the adjacent chains is 60 degrees.

Furthermore, the synchronous structure comprises a driving wheel coaxial with the winding wheel, two pressing wheels, a middle wheel in one-to-one correspondence with the driving wheel and a synchronous wheel coaxial with the middle wheel, wherein the pressing wheels, the synchronous wheel, the middle wheel and the driving wheel are all bevel gears, the middle wheel and the synchronous wheel are arranged alternately, the middle wheel is meshed with the adjacent synchronous wheel, the two pressing wheels are symmetrically distributed, the pressing wheels, the middle wheel, the driving wheel and the synchronous wheel are all rotatably connected onto the storage barrel, the driving wheel is positioned between the two pressing wheels, and each driving wheel is meshed with the two pressing wheels simultaneously.

When the chains are wound on the winding wheel, all chain links of the chains are in the same plane, so that under the condition that the sizes of all the chains are the same and the sizes of the winding wheel are the same, the loosening degree of all the chains are the same in the winding process, in order to ensure that all the chains are synchronous, the winding wheel is coaxially provided with a driving wheel and a synchronous wheel, the rotation directions of all the synchronous wheels are ensured to be the same through an intermediate wheel, and the rotation speeds of the winding wheel are ensured to be the same through a pressing wheel.

Furthermore, the axes of the two pressing wheels are respectively and fixedly connected with a sleeve, the spray pipe is rotatably connected in the sleeve, the spray pipe is simultaneously connected with the tank body and the spray head after penetrating through the two sleeves, and a first clockwork spring is connected between at least one sleeve and the storage barrel.

The existence of the first clockwork spring can lead the chain to be automatically wound after being pulled out.

Drawings

FIG. 1 is a schematic structural view of the sponge flame retardant device after the tank body is removed.

Fig. 2 is a sectional view taken in the direction a-a in fig. 1.

Fig. 3 is a schematic view of the structure of the winding wheel.

Fig. 4 is a schematic view showing the distribution of three chains.

Fig. 5 is a schematic plan view of the mounting bracket.

Fig. 6 is a cross-sectional view of the spray head.

Fig. 7 is a sectional view in the direction B-B in fig. 6.

Fig. 8 is a schematic structural view of the telescopic mechanism.

In the figure, 1, a spray pipe; 11. a spray head; 12. a pressure limiting valve; 13. a fixed section; 14. coiling the section; 2. a storage cylinder; 3. a mounting frame; 31. a fixing plate; 32. a movable plate; 4. a chain; 51. a winding wheel; 52. a driving wheel; 53. a synchronizing wheel; 54. a pinch roller; 55. an intermediate wheel; 56. a sleeve; 57. a first spring; 61. a pipe winding wheel; 62. winding the pipe groove; 63. A third joint; 64. supporting a tube; 65. a second spring; 71. an air outlet; 72. a first metal sheet; 73. a second metal sheet; 74. avoiding the mouth; 75. a gas guide groove; 76. the spring is adjusted.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the flame retardant device comprises a tank body, a spray pipe 1 connected with the tank body, a storage barrel 2 fixed on the tank body, a plurality of spray heads 11 connected with the tail end of the spray pipe 1, a mounting frame 3 for mounting the spray heads 11, a telescopic mechanism connected between the storage barrel 2 and the mounting frame 3, and an adjusting mechanism allowing the distance between the two ends of the spray pipe 1 to be variable under the condition of keeping communication, wherein the spray heads 11 are tubular, the end parts of which are provided with sharp thorn parts, the spray heads 11 are parallel to each other, the spray heads 11 are connected with the spray pipe 1 after being connected in parallel, a pressure limiting valve 12 is arranged between the spray pipe 1 and.

The switch of the internal carbon dioxide gas high pressure blowout spray tube 1 of jar of body and control jar is conventional structure among the current fire extinguisher, in order to realize remotely putting out a fire shower nozzle 11 propelling movement to assigned position, set up telescopic machanism between jar body and shower nozzle 11, the mounting panel propelling movement to the suitable position that will carry shower nozzle 11, and spray tube 1's length also can realize that length is variable through adjustment mechanism, under this condition, the mounting panel can be delivered to corresponding position, the inside of sponge under the internal combustion state is inserted through a plurality of shower nozzles 11 that have spine portion, it becomes light to put out a fire under the sponge internal combustion state, safety and high efficiency.

As shown in fig. 1, 2, 4 and 8, the telescopic mechanism includes at least two chains 4 with only one plane freedom of movement, winding wheels 51 corresponding to the chains 4 one by one, and a synchronous structure capable of driving the winding wheels 51 to rotate synchronously in the same direction, the moving planes of the chains 4 are crossed, one end of the chain 4 is fixed with the corresponding winding wheel 51, and the other end of the chain 4 is connected with the mounting frame 3.

Because the chains 4 are the chains 4 which can be bent in a single plane, namely, all rotating shafts of the chains 4 are parallel to each other, and the chain links are connected end to end and have a common flexible linking structure, under the condition that the end parts of the chains 4 are limited and the degree of freedom planes are not in the same plane, the integral structure formed by the chains 4 has the advantage that when one end of the integral structure is rolled, the other end of the integral structure is extended or retracted straightly, so that the effect of pushing or pulling back the mounting plate linearly can be realized.

The number of the chains 4 is three, and the included angle between the movable planes of the adjacent chains 4 is 60 degrees.

The synchronous structure comprises a transmission wheel 52 coaxial with the winding wheel 51, two pressing wheels 54, intermediate wheels 55 in one-to-one correspondence with the transmission wheel 52, and synchronizing wheels 53 coaxial with the intermediate wheels 55, wherein the pressing wheels 54, the synchronizing wheels 53, the intermediate wheels 55 and the transmission wheel 52 are all bevel gears, the intermediate wheels 55 and the synchronizing wheels 53 are arranged at intervals, the intermediate wheels 55 are meshed with the synchronizing wheels 53 adjacent to the intermediate wheels 55, the two pressing wheels 54 are symmetrically distributed, the pressing wheels 54, the intermediate wheels 55, the transmission wheel 52 and the synchronizing wheels 53 are connected to the storage barrel 2 in a rotating mode, the transmission wheel 52 is located between the two pressing wheels 54, and each transmission wheel 52 is meshed with the two pressing wheels 54 simultaneously.

When the chains 4 are wound around the winding wheel 51, the links of the chains 4 are in the same plane, so that when the chains 4 have the same size and the winding wheel 51 has the same size, the chains 4 are loosened to the same extent during winding, and in order to ensure synchronization of the chains 4, the winding wheel 51 is provided with a transmission wheel 52 and a synchronizing wheel 53 coaxially, and the synchronizing wheels 53 are rotated to the same direction by an intermediate wheel 55, and the winding wheel 51 is rotated at the same speed by a pinch roller 54.

The axes of the two pressing wheels 54 are respectively fixedly connected with a sleeve 56, the spray pipe 1 is rotatably connected in the sleeve 56, the spray pipe 1 is simultaneously connected with the tank body and the spray head 11 after penetrating through the two sleeves 56, and a first hair strip 57 is connected between at least one sleeve 56 and the storage barrel 2.

The presence of the first spring 57 enables the automatic winding up of the chain 4 after it has been pulled out.

The telescopic mechanism may also be a structure capable of linearly extending and retracting, such as an air cylinder, a linear motor, etc., which is not described herein.

As shown in fig. 1 and 3, the nozzle 1 includes a hard fixed section 13 penetrating through the casing 56 and a soft furling section 14 connecting the fixed section 13 and the nozzle 11, the adjusting mechanism includes a winding wheel 61, a winding groove 62 is formed on the winding wheel 61, a three-joint 63 is inserted in the middle of the winding groove 62, one end of the three-joint 63 is connected to the nozzle 1, the other two ends of the three-joint 63 are in the same straight line, the two joints in the same straight line are respectively rotatably connected in the axial hole of the winding wheel 61, two ends of the axial hole of the winding wheel 61 are respectively rotatably connected to a support tube 64, the two support tubes 64 are respectively communicated with the two joints in the same straight line on the three-joint 63, the support tubes 64 are fixedly connected to the mounting frame 3, and the support tubes 64 are respectively connected to the axial hole of the winding wheel 61 through a second spring 65.

In order to ensure that the supporting pipe 64 connected with the end of the spray pipe 1 is in a static state during the rotation of the winding wheel 61, the end of the winding section 14 is provided with a three-joint 63, two joints of the three-joint 63 which are positioned on the same straight line are rotatably connected in the supporting pipe 64, the supporting pipe 64 is rotatably connected in a shaft hole of the winding wheel 61, the supporting pipe 64 is communicated with each spray head 11 through a hose, after the high-pressure gas in the tank body is sprayed out, the gas can not be sprayed out at the end of the spray head 11 under the action of the pressure limiting valve 12 until the pressure reaches the limited value of the pressure limiting valve 12, before the pressure in the spray pipe 1 is higher, the axial direction of the spray pipe 1 is subjected to a higher driving force, the driving force drives the spray pipe 1 to be straight, so that the winding wheel 61 overcomes the restoring force of the second spring 65 to discharge the spray pipe 1, and simultaneously, the chain 4 also extends out, and, realize the long-distance fire extinguishing, and the mounting panel is straight to stretch out or retract relatively, is convenient for operation and control.

As another technical scheme, the adjusting mechanism of the spray pipe 1 can be a plurality of short pipes sleeved in a stepped manner, and the connected short pipes are sealed and can slide mutually.

As shown in fig. 1 and 5, the mounting frame 3 includes a fixed plate 31 and two movable plates 32 rotatably connected to two sides of the fixed plate 31, respectively, the spray head 11 is mounted on the movable plates 32, the chain 4 is connected to the fixed plate 31, the storage barrel 2 has a rectangular storage cavity, the movable plates 32 are hinged to the fixed plate 31 by a pin, and a torsion spring is wound on the pin to drive the movable plates 32 and the fixed plate 31 to be on the same plane; the nozzles 11 on the two movable plates 32 are staggered with each other.

Except the tank body, other structures are a whole body which can be repeatedly used, and one end of the spray pipe 1 connected with the tank body is detachably connected with the tank body.

The movable plate 32 and the fixed plate 31 are U-shaped after being folded and can be stored in the storage barrel 2, after the movable plate 32 is unfolded, the distribution area of the spray head 11 is large, the fire extinguishing range is facilitated, the air injection end is directly opposite to the ignition area of the sponge, the air injection pressure is large, and the fire extinguishing efficiency is high.

The pipe winding wheel 61 is fixedly connected with the fixed plate 31 through a support pipe 64, a hose is connected on the support pipe 64, and the hose is connected with the pressure limiting valve 12 arranged on the movable plate 32 and then is connected with the spray head 11.

As shown in fig. 6 and 7, the nozzle 11 has a rectangular air outlet 71, a first metal sheet 72 and a second metal sheet 73 are disposed at the end of the air outlet 71, the first metal sheet 72 and the second metal sheet 73 intercept the entire cross section of the air outlet 71, a relief opening 74 is disposed on the wall of the air outlet 71 near the middle of the first metal sheet 72, a plurality of air guide grooves 75 are disposed on one side of the first water inlet sheet 73 and the second metal sheet 73, which are abutted against each other at two ends of the first metal sheet 75, the aperture of the air guide grooves 75 gradually decreases from the ends to the middle, so that the middle of the first metal sheet 72 and the second metal sheet 73 are abutted against each other to intercept the air outlet 71, and the coefficient of thermal expansion of the first metal sheet 72 is greater than that of the second metal sheet 73; the middle part of the first metal sheet 72 can be deformed and bent towards the avoidance hole, so that the air outlet hole 71 is smooth.

Because shower nozzle 11 is numerous, every shower nozzle 11 all spouts gas, has the weakening to the jet-propelled pressure of single shower nozzle 11, and the burning zone is not very easy accurate to find in the appearance to the inside burning of sponge, in addition the existence of dense cigarette, for accurate putting out a fire, sets up the bimetallic strip structure in the shower nozzle 11, can be under different temperature effects the end of rotation nature conduction shower nozzle 11.

Specifically, because the air guide grooves 75 near one end of the air source and the air guide grooves 75 near the air outlet end are symmetrically distributed, the air guide grooves 75 corresponding to the first metal sheet 72 and the second metal sheet 73 form a conical air guide hole, the hole diameter of the air guide groove 75 near the middle parts of the first metal sheet 72 and the second metal sheet 73 is zero, when the first metal sheet 72 is not deformed, the air outlet hole 71 is cut off by the first metal sheet 72 and the second metal sheet 73, the deformation of the first metal sheet 72 is larger when the first metal sheet 72 and the second metal sheet 73 are subjected to higher temperature, so that the ventilation section is increased, otherwise, the ventilation section is smaller, and when a fire is extinguished, if the spray head 11 is inserted into a non-ignition area, no air is sprayed, so that the air spraying pressure of other spray heads 11 in the ignition area is larger.

The first metal sheet 72 is zinc alloy and the second metal sheet 73 is copper.

Rubber sheets are arranged on the inner sides of the first metal sheet 72 and the second metal sheet 73, and the air guide groove 75 is formed in the rubber sheets.

The avoiding opening 74 is provided with an adjusting spring 76, one end of the adjusting spring 76 is abutted against the outer side face of the first metal sheet 72, the other end of the adjusting spring 76 is abutted against a pressing plate, the pressing plate is connected with an adjusting bolt, a through hole is formed in the spray head 11, the adjusting bolt is arranged in the through hole in a penetrating mode, and a locking nut is connected to the adjusting bolt through threads.

The pressure plate can adjust the deformation resistance of the first metal sheet 72 through the locking nut, and the end parts of the first metal sheet 72 and the second metal sheet 73 are fixed on the inner wall of the air outlet hole 71 on the spray head 11.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (4)

1. The utility model provides a telescopic machanism of fire extinguishing head among special fire-retardant device of sponge, its characterized in that, telescopic machanism includes at least two chains (4) of only a plane activity degree of freedom, take-up pulley (51) with chain (4) one-to-one and can order about each synchronous syntropy rotatory synchronizing structure of take-up pulley (51), the activity plane intercrossing of each chain (4), the one end of chain (4) is fixed with take-up pulley (51) that correspond with it, each the other end of chain (4) is connected on same mounting bracket (3), one of them take-up pulley is rotatory through a motor drive.

2. The telescopic mechanism of the fire extinguishing head in the flame retardant device special for sponge as claimed in claim 1, characterized in that there are three chains (4), and the included angle between the active planes of adjacent chains (4) is 60 degrees.

3. The telescopic mechanism of the fire extinguishing head in the special flame retardant device for sponge as recited in claim 2, characterized in that the synchronous structure comprises a transmission wheel (52) coaxial with the winding wheel (51), two pressing wheels (54), a middle wheel (55) corresponding to the transmission wheel (52) one by one, and a synchronous wheel (53) coaxial with the middle wheel (55), wherein the pressing wheels (54), the synchronous wheel (53), the middle wheel (55) and the transmission wheel (52) are all bevel gears, the middle wheel (55) and the synchronous wheel (53) are arranged alternately, the middle wheel (55) is engaged with the synchronous wheel (53) adjacent to the middle wheel, the two pressing wheels (54) are symmetrically distributed, the pressing wheels (54), the middle wheel (55), the transmission wheel (52) and the synchronous wheel (53) are all rotationally connected to the receiving cylinder (2), the transmission wheel (52) is located between the two pressing wheels (54), and each drive wheel (52) simultaneously engages two pressure wheels (54).

4. The telescopic mechanism of the fire extinguishing head in the special flame retardant device for sponge according to claim 3 is characterized in that the axes of the two pressing wheels (54) are respectively and fixedly connected with a sleeve (56), the sleeves (56) are rotatably connected with the spray pipe (1), the spray pipe (1) is simultaneously connected with the tank body and the spray head (11) after penetrating through the two sleeves (56), and a first clockwork spring (57) is connected between at least one sleeve (56) and the receiving cylinder (2).

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