CN212532206U - Fire-fighting platform - Google Patents

Abstract

The utility model relates to a fire control platform belongs to fire-fighting equipment's technical field, and it includes the platform base, with many vertical bracing pieces of platform base fixed connection and with the bracing piece keep away from the guardrail of platform base's one end fixed connection's frame construction, the fourth recess has been seted up to the lateral wall of platform base, and sliding fit has the extension platform in the fourth recess, and articulated in the extension platform have a movable support that is used for erectting fire-fighting water pipe, fixedly connected with rope between extension platform and the bracing piece, the utility model provides an extend the platform, fire fighter can utilize the extension platform to erect fire-fighting water pipe, has closely to be close to the effect that the fire source was put out a fire.

Description

Fire-fighting platform

Technical Field

The utility model belongs to the technical field of the technique of fire-fighting equipment and specifically relates to a fire-fighting platform is related to.

Background

With the continuous development of science and technology, the urbanization process of China is nearly full, and the development situation of high-rise buildings and super high-rise buildings is rapidly and rapidly continued. However, in recent years, fire accidents frequently occur in high-rise buildings, which causes great loss of lives and properties and adverse social effects. When a fire disaster occurs in a high-rise building, a fire extinguishing scheme is that a fire fighter is required to lift a fire extinguishing water gun to the height of the fire disaster by means of an aerial ladder or a climbing platform to extinguish the fire.

The existing Chinese patent with the reference publication number of CN210583401U discloses a self-climbing fire-fighting platform, which comprises an attachment guide frame, wherein the attachment guide frame main body is built by standard sections, and the standard sections are fixedly connected with racks through rack positioning sleeves; the lifting device is lifted along the rack, and a hoop structure is arranged on the lifting device; the hoop structure is provided with a roller group which is in rolling contact with the standard section to guide the lifting device to lift; a motor gear is also arranged in the hoop structure and driven by a motor to rotate, and the motor gear is meshed with the rack to lift; an operation platform is fixed on the lifting device; the attached guide frame is provided with a fire-fighting water supply pipe.

The above prior art solutions have the following drawbacks: when the fire fighter needs closely put out a fire, foretell from climbing formula fire platform does not set up a device that can closely be close to the fire source in order to satisfy the fire fighter and to closely be close to the demand that the fire source was put out a fire.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fire control platform provides extension platform, and the fire fighter can utilize extension platform to erect fire hose, has the effect of closely being close to the fire source and putting out a fire.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a fire-fighting platform, includes platform base, with many vertical bracing pieces of platform base fixed connection and keep away from platform base's one end fixed connection's frame construction's guardrail with the bracing piece, the fourth recess has been seted up to platform base's lateral wall, and sliding fit has the extension platform in the fourth recess, and articulated in the extension platform have the movable support that is used for erectting fire-fighting water pipe, fixedly connected with rope between extension platform and the bracing piece.

By adopting the technical scheme, a fireman can stand in the platform base to extinguish fire, and the support rods and the guardrails can prevent the fireman from accidentally falling from the platform base; when a fireman needs to be close to a fire source for fire extinguishment, the extension platform slides out of the platform base, the movable support hinged in the extension platform is supported, and the fireman can arrange the fire-fighting water pipe in the movable support and close to the fire source for fire extinguishment; the rope can be further supported the extension platform with the help of the bracing piece, has guaranteed the fire fighter and has extended the stability of platform when putting out a fire with the help of extending the platform closely.

The utility model discloses further set up to: first breach has been seted up to the lateral wall of platform base, the second breach has been seted up to the guardrail that is located the top of first breach, first breach and second breach articulate jointly have the door that opens and shuts, the door that opens and shuts includes the banding, banding and two piece at least bracing pieces down, upward banding and the cooperation of second breach, banding and the cooperation of first breach down, bracing piece fixed connection goes up banding and banding down, the door that opens and shuts is vertical with platform base and the relative normal running fit of guardrail and axis of rotation, the one end that the axis of rotation of opening and shutting was kept away from to the banding sets firmly first bellying, the one end of the guardrail that is close to first bellying has set firmly the second bellying, the first bellying of second bellying butt, make the door that opens and shuts only can open to the inside of fire control platform.

By adopting the technical scheme, a fireman can enter the interior of the fire fighting platform through the opening and closing door, and when the fireman is rescued, the rescued fireman can enter the interior of the fire fighting platform through the opening and closing door; the door that opens and shuts only can be opened to fire control platform is inside, has both made things convenient for inside personnel's entering fire control platform, can prevent again that the personnel that are in fire control platform inside are unexpected to fall.

The utility model discloses further set up to: the upper end face of the guardrail is provided with a sliding groove, and a movable support is clamped in the sliding groove in a sliding manner.

By adopting the technical scheme, the movable bracket can be clamped with the fire-fighting water pipe, so that the recoil generated when the fire-fighting water pipe sprays high-pressure water columns is reduced, and the labor burden of firemen can be reduced; when the spraying position of the water column needs to be changed, the movable support slides along the sliding groove, so that the spraying position can be easily changed.

The utility model discloses further set up to: at least one second groove is formed in the upper surface of the extension platform, and a movable support is hinged in the second groove.

By adopting the technical scheme, a fireman can erect the fire-fighting water pipe by virtue of the movable bracket on the extension platform to realize close-range fire extinguishing; when the movable support is not used, the movable support can be placed in the second groove in an inverted mode, the space occupancy rate is reduced, and when the extension platform slides in the fourth groove, the movable support placed in the second groove in the inverted mode can enable the extension platform to slide freely in the fourth groove.

The utility model discloses further set up to: the movable support comprises a sliding block, a first rotating shaft and a U-shaped support, the sliding block is in sliding fit with the sliding groove, the sliding block of the movable support located in the second groove is hinged to the bottom surface of the second groove, the first rotating shaft is perpendicular to the sliding block and is rotatably connected with the sliding block, and the U-shaped support is rotatably connected with one end, far away from the sliding block, of the first rotating shaft and is horizontal to the rotating axis.

Through adopting above-mentioned technical scheme, make U type support can change the injection height of water column around first pivot rotation, first pivot can drive U type support around its self rotation and carry out the horizontal rotation, can increase the coverage of water column in the horizontal range, and the movable support slides along the spout with the help of the slider and can easily be close the position of burning things which may cause a fire disaster and carry out the injection water column and put out a fire.

The utility model discloses further set up to: the side of the extension platform far away from the fourth groove is provided with a first groove, a fixed pulley with a horizontally arranged axis is rotatably connected in the first groove, the surface of the fixed pulley is fixedly connected with a rope, and the rope is wound on the surface of the fixed pulley.

Through adopting above-mentioned technical scheme, fixed pulley can be held to first recess, and when extension platform slided along the fourth recess, the rope can twine the outer wall at fixed pulley, has prolonged the life of rope, makes the rope remain the state of straightening all the time when extension platform slided simultaneously again.

The utility model discloses further set up to: the support rod fixedly connected with the rope is respectively and rotatably connected with the guardrail and the platform base.

By adopting the technical scheme, when the extension platform slides out of the platform base, the rope is gradually separated from the outer wall of the supporting rod and extends, and the supporting rod continuously rotates; when the extension platform slides in the platform base, the bracing piece is rotatory in the opposite direction, and the rope twines on the outer wall of bracing piece round ground under the rotatory drive of bracing piece, realizes accomodating the rope, avoids the rope in disorder and twines the fire control instrument.

The utility model discloses further set up to: u type support articulated have with U type support lock back formation hollow cylinder's circular arc lid, the circular arc lid is provided with the locking piece, U type support keep away from with the circular arc articulated department of lid seted up the notch, notch and locking piece joint cooperation.

By adopting the technical scheme, when the fire-fighting water pipe needs to be placed into the U-shaped support, the arc cover and the U-shaped support are unlocked through the locking block, the arc cover is rotated to be opened, the fire-fighting water pipe is clamped into the U-shaped support, the arc cover is rotated to be closed, and the locking block can be automatically clamped and matched with the notch; the cooperation of U type support and circular arc lid can embrace fire-fighting water pipe, because of the dislocation that the recoil produced when reducing fire-fighting water pipe jet water column, and U type support supports fire-fighting water pipe simultaneously, alleviates fire fighter's work burden.

To sum up, the utility model discloses a following at least one useful technological effect:

1. by arranging the extension platform in sliding fit with the platform base, a movable support is hinged in the extension platform, and a fireman can simultaneously spray water columns in multiple directions to extinguish fire in a short distance by using the extension platform;

2. the sliding groove is formed in the upper surface of the guardrail, and the movable support is matched in the sliding groove in a sliding manner, so that the movable support can reduce the recoil generated when the fire-fighting water pipe sprays water columns, can support the fire-fighting water pipe and can reduce the labor burden of firemen;

3. can only be to the inside door that opens and shuts of opening of fire control platform through the setting, inside the door that opens and shuts was convenient for personnel to get into fire control platform, can prevent simultaneously again that personnel from falling from the fire control platform is interior accident.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a schematic view of the extension platform sliding out of the platform base;

FIG. 3 is a schematic structural view of a movable support;

FIG. 4 is an enlarged exploded view of portion A of FIG. 3;

FIG. 5 is a schematic view of the structure with the railing hidden to emphasize the slot;

FIG. 6 is a cross-sectional view of the rail intended to emphasize the second counterbore;

fig. 7 is a schematic view aimed at emphasizing the structure of the cylinder.

In the figure, 1, a platform base; 11. a fourth groove; 12. opening and closing the door; 121. sealing the edges at the upper part; 1211. a first boss portion; 122. sealing the lower edge; 14. a return spring; 15. a first counterbore; 16. a rolling bearing; 17. a standing groove; 18. a first notch; 2. a guardrail; 21. a second counterbore; 22. a chute; 23. a cylindrical torsion spring; 24. a second notch; 25. a second boss portion; 3. a support bar; 31. a card slot; 32. clamping the strip; 33. clamping a spring; 4. an extension platform; 41. a fixed pulley; 42. a first groove; 43. a second groove; 44. a cylinder; 5. a movable support; 51. a slider; 52. a first rotating shaft; 53. a U-shaped bracket; 531. a recess; 5311. a third groove; 532. convex round; 54. a grip; 55. a bolt; 56. a thrust ball bearing; 57. an arc cover; 58. a locking block; 581. unlocking the groove; 582. a telescopic groove; 583. a tension spring; 584. a locking strip; 5841. an unlocking lever; 5842. a circular arc insertion end; 59. a round counter bore; 6. a rubber pad; 7. a rope.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a fire-fighting platform, including platform base 1, with platform base 1 fixed connection's many equidistant bracing pieces 3 and with bracing piece 3 keep away from platform base 1's one end fixed connection's frame construction's guardrail 2.

Referring to fig. 1, the platform base 1 is a cubic structure, a standing groove 17 is formed in the upper surface of the platform base 1, and the standing groove 17 is an operation area where fire extinguishment is performed by a fireman.

Referring to fig. 1, a first notch 18 has been seted up to the lateral wall of platform base 1, a second notch 24 has been seted up to guardrail 2 that is located the top of first notch 18, first notch 18 and second notch 24 articulate jointly has a retractable door 12, retractable door 12 includes upper seal edge 121, lower seal edge 122 and two piece at least bracing pieces 3, upper seal edge 121 and the cooperation of second notch 24, lower seal edge 122 and the cooperation of first notch 18, bracing piece 3 fixed connection upper seal edge 121 and lower seal edge 122, retractable door 12 is vertical with platform base 1 and the relative normal running fit of guardrail 2 and axis of rotation.

Referring to fig. 1, a return spring 14 is fixedly connected to the middle position of the support rod 3 at the corner of the guardrail 2, and the other end of the return spring 14 is connected to the middle position of the support rod 3 far away from the rotation axis of the opening and closing door 12; the one end that goes up banding 121 and keep away from opening and shutting door 12 axis of rotation has set firmly first bellying 1211, and the one end of guardrail 2 that is close to first bellying 1211 has set firmly second bellying 25, and second bellying 25 butt first bellying 1211 makes opening and shutting door 12 only can open to the inside of fire control platform, makes inside the fire fighter can easily get into the fire control platform, simultaneously, prevents that the fire fighter from unexpected in the fire control platform.

Referring to fig. 2 and 3, the upper end surface of the guardrail 2 is provided with a sliding groove 22, and the sliding groove 22 of each edge of the guardrail 2 is slidably clamped with at least one movable bracket 5; the movable support 5 comprises a sliding block 51, a first rotating shaft 52, a U-shaped support 53 and an arc cover 57, the sliding block 51 is in sliding fit with the sliding groove 22, the first rotating shaft 52 is perpendicular to the sliding block 51 and is in rotating fit with the sliding block 51, the U-shaped support 53 is in rotating connection with one end, far away from the sliding block 51, of the first rotating shaft 52, and the arc cover 57 is hinged and buckled with the U-shaped support 53 to form a hollow cylinder.

Referring to fig. 3 and 4, a circular counter bore 59 is formed in the upper end face of the slider 51, a thrust ball bearing 56 is fixedly connected in the circular counter bore 59, a race of the thrust ball bearing 56 is fixedly connected with the inner wall of the circular counter bore 59, and a shaft ring of the thrust ball bearing 56 is fixedly connected with the first rotating shaft 52; the bottom of the outer wall of the U-shaped support 53 is fixedly provided with a convex circle 532, one end of the first rotating shaft 52, which is far away from the sliding block 51, is rotatably inserted with a bolt 55, the bolt 55 penetrates through the U-shaped support 53 and one end of the first rotating shaft 52, which is far away from the sliding block 51, one side of the U-shaped support 53 is fixedly provided with a handle 54, and the U-shaped support 53 can rotate around the bolt 55 and the U-shaped support 53 can horizontally rotate by using the handle 54; rubber pads 6 are respectively bonded on the inner walls of the U-shaped support 53 and the arc cover 57, and the rubber pads 6 can increase the friction force between the fire hose and the U-shaped support 53 and between the fire hose and the arc cover 57, so that the fire hose can be more effectively embraced by the hollow cylinders formed by the U-shaped support 53 and the arc cover 57, and the dislocation of the fire hose caused by recoil when the fire hose sprays water columns is reduced.

Referring to fig. 3 and 4, a locking block 58 is fixedly arranged at a position of the arc cover 57 away from the hinge joint with the U-shaped bracket 53, a notch 531 attached to a side wall of the locking block 58 is arranged at a matching position of the U-shaped bracket 53 and the locking block 58, two vertical side walls of the locking block 58 are respectively provided with a telescopic slot 582 in the same horizontal plane, a telescopic spring 583 is fixedly connected at the vertical bottom of the telescopic slot 582, the other end of the telescopic spring 583 is fixedly connected with a locking bar 584, one end of the locking bar 584 away from the telescopic spring 583 is provided with an arc insertion end 5842, a third slot 5311 is arranged at a position of the notch 531 corresponding to the locking bar 584, the arc insertion end 5842 is in inserting fit with the third slot 5311, the arc insertion end 5842 enables the locking bar 584 to be smoothly inserted into the third slot 5311, two unlocking slots 581 in the same horizontal plane are arranged on the outer wall of the locking block 58, the unlocking slots 581 are communicated with the telescopic slots 582, the unlocking rod 5841 is fixedly connected with the locking bar 584, and when the telescopic spring 583 is in a natural state, the circular arc insertion end 5842 of the locking bar 584 is positioned outside the telescopic groove 582.

Referring to fig. 3 and 4, when the arc cover 57 needs to be opened, the unlocking rods 5841 are closed, the unlocking rods 5841 drive the locking strips 584 to be closed, the arc insertion end 5842 is withdrawn from the third groove 5311, the arc cover 57 is opened at the moment, the fire hose is placed into the U-shaped support 53, then the arc cover 57 rotates towards the U-shaped support 53 to be closed, and the locking block 58 can automatically lock the arc cover 57 and the U-shaped support 53; when putting out a fire, the outer wall of fire hose and rubber pad 6 closely laminate, and rubber pad 6 has increased the frictional force between the inner wall of fire hose and U type support 53 and the inner wall of circular arc lid 57, and recoil makes the dislocation that fire hose produced when having reduced fire hose jet stream.

Referring to fig. 2 and 7, a horizontal fourth groove 11 is formed in the outer side wall of the platform base 1, the extending platform 4 is in sliding fit in the fourth groove 11, and in this embodiment, the fourth groove 11 is preferably formed in the same side of the opening and closing door 12; an air cylinder 44 is fixedly connected in the fourth groove 11, the side surface of the extension platform 4 positioned in the fourth groove 11 is fixedly connected with an expansion link of the air cylinder 44, two ropes 7 are fixedly connected between the extension platform 4 and the support rod 3, one end of each rope 7 is fixedly connected with the side wall of the extension platform 4 far away from the air cylinder 44, and the other end of each rope 7 is fixedly connected with the support rod 3 corresponding to the extension platform 4; a second groove 43 is formed in the upper surface of the extension platform 4, a movable support 5 is hinged in the second groove 43, and a fireman can erect a fire-fighting water pipe by means of the movable support 5 to realize close-range fire extinguishment; when the movable support 5 is not used, the movable support 5 is placed upside down into the second groove 43, so that the space occupancy rate is reduced, and when the extension platform 4 slides in the fourth groove 11, the movable support 5 placed upside down into the second groove 43 can enable the extension platform 4 to slide freely in the fourth groove 11.

Referring to fig. 2 and 6, a first groove 42 is formed in a side wall of the extension platform 4 far away from the fourth groove 11, a fixed pulley 41 is rotatably arranged in the first groove 42, a rotating shaft of the fixed pulley 41 is horizontally arranged, and an outer wall of the fixed pulley 41 is fixedly connected with the rope 7; the platform base 1 is provided with a first counter bore 15, the guardrail 2 is provided with a second counter bore 21, and the support rod 3 fixedly connected with the rope 7 is in running fit with the first counter bore 15 and the second counter bore 21; a rolling bearing 16 is fixedly connected in the first counter bore 15, the outer ring of the rolling bearing 16 is fixedly connected with the inner wall of the first counter bore 15, and the inner ring of the rolling bearing 16 is fixedly connected with the support rod 3; the bracing piece 3 is located inside first counter bore 15, the inside outer wall winding of second counter bore 21 has cylindrical torsion spring 23, cylindrical torsion spring 23's one end and 3 fixed connection of bracing piece, cylindrical torsion spring 23's the other end and the inner wall of first counter bore 15, the inner wall fixed connection of second counter bore 21, when extension platform 4 is located platform base 1 inside completely, cylindrical torsion spring 23 is in natural state.

Referring to fig. 5, a plurality of vertical draw-in grooves 31 of circumference equipartition are seted up to the one end that the bracing piece 3 is located second counter bore 21, sliding fit has the card strip 32 that has the bellying in draw-in groove 31, the bellying of card strip 32 is located the upper surface outside of guardrail 2, card strip 32 cooperates with arbitrary draw-in groove 31 joint, one side fixedly connected with joint spring 33 of bracing piece 3 is kept away from to card strip 32, the other end of joint spring 33 and the inner wall fixed connection of second counter bore 21, joint spring 33 is original long-term, card strip 32 inserts in the draw-in groove 31.

Referring to fig. 2 and 5, when extension platform 4 from the interior roll-off of platform base 1, make card strip 32 break away from in the draw-in groove 31 with the help of the bellying of card strip 32, unblock bracing piece 3, extension platform 4 drives the extension of rope 7, the rope 7 of winding at the bracing piece 3 outer wall breaks away from bracing piece 3 gradually, the rope 7 of gradual extension makes bracing piece 3 constantly rotate around its self axis, when extension platform 4 slides to required position, loosen the bellying of card strip 32, card strip 32 can insert into locking bracing piece 3 in the draw-in groove 31 corresponding to it automatically, bracing piece 3 can further support extension platform 4 with the help of rope 7.

The implementation principle of the embodiment is as follows: when putting out a fire, make unblock pole 5841 draw close unblock circular arc lid 57 each other, rotate circular arc lid 57 around U type support 53 and open, put into U type support 53 with fire-fighting water pipe inside, close circular arc lid 57, under expanding spring 583's effect, locking piece 58 can be automatically locked circular arc lid 57 and U type support 53, U type support 53 and circular arc lid 57 can hold fire-fighting water pipe and support fire-fighting water pipe simultaneously, the operation burden of fireman has been alleviateed, the outer wall of fire-fighting water pipe closely laminates with rubber pad 6, rubber pad 6 has increased the frictional force between the inner wall of fire-fighting water pipe and U type support 53 and the inner wall of circular arc lid 57, recoil makes the diastrophism that fire-fighting water pipe produced when having reduced fire-fighting water pipe jet stream.

The movable bracket 5 can be easily slid to different positions for fire extinguishing by utilizing the sliding fit of the sliding block 51 and the sliding groove 22, the spraying height of the fire hose can be changed by rotating the U-shaped bracket 53 around the bolt 55 by virtue of the grip 54, and the horizontal spraying range of the fire hose can be changed by rotating the U-shaped bracket 53 and the first rotating shaft 52 together around the axis of the first rotating shaft 52 by virtue of the grip 54; four sides of the guardrail (2) are provided with at least one movable bracket (5), so that the effect of extinguishing fire in four directions simultaneously is achieved.

When rescuing stranded personnel from high-rise building in, open and shut door 12, stranded personnel can get into this fire platform inside, and open and shut door 12 only can be opened to 2 inboards of guardrail, makes stranded personnel get into inside the fire platform more easily, simultaneously, also can prevent to be in the unexpected of personnel that the fire platform was inside and fall.

When a fireman needs to be further close to a fire source, the clamping strip 32 is withdrawn from the clamping groove 31 by virtue of the protruding part of the clamping strip 32, the supporting rod 3 is unlocked, the extension platform 4 slides out of the platform base 1 through the air cylinder 44, the rope 7 wound on the outer wall of the supporting rod 3 continuously breaks away from the outer wall of the supporting rod 3 and extends while the extension platform 4 slides out of the platform base 1, the rope 7 can support the extension platform 4 by virtue of the supporting rod 3, the supporting rod 3 is driven to rotate by the rope 7, the cylindrical torsion spring 23 is driven by the supporting rod 3, and the fixed pulley 41 in rolling fit with the rope 7 can enable the rope 7 to extend more smoothly; when the extension platform 4 reaches a designated position, the protruding part of the clamping strip 32 is released, and the clamping strip 32 can be automatically inserted into the corresponding clamping groove 31 under the pressure of the clamping spring 33 to lock the support rod 3; after the extension platform 4 slides out of the platform base 1, the movable support 5 is supported from the second groove 43, and the fire fighting water pipe is clamped into the movable support 5 to start to extinguish fire at a short distance; after putting out a fire, put movable support 5 and fall into inside second recess 43, make card strip 32 withdraw from draw-in groove 31 with the help of the bellying of card strip 32, make extension platform 4 slide in to platform base 1 inside with the help of cylinder 44, cylindrical torsion spring 23 makes 3 antiport of bracing piece, rope 7 twines on the outer wall of bracing piece 3 constantly round ground simultaneously, extend platform 4 and get into platform base 1 back completely, loosen the bellying of card strip 32, card strip 32 automatic insertion advances in the draw-in groove 31 relative to it, locking bracing piece 3, cylindrical torsion spring 23 resumes natural state.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a fire-fighting platform, includes platform base (1), with many vertical bracing pieces (3) of platform base (1) fixed connection and with bracing piece (3) keep away from guardrail (2) of one end fixed connection's of platform base (1) frame construction, its characterized in that: fourth recess (11) have been seted up to the lateral wall of platform base (1), and sliding fit has extension platform (4) in fourth recess (11), and it has movable support (5) that are used for erectting fire hose to articulate in extension platform (4), fixedly connected with rope (7) between extension platform (4) and bracing piece (3).

2. A fire fighting platform as defined in claim 1, wherein: the side wall of the platform base (1) is provided with a first notch (18), a guardrail (2) positioned above the first notch (18) is provided with a second notch (24), the first notch (18) and the second notch (24) are hinged with an opening and closing door (12) together, the opening and closing door (12) comprises an upper sealing edge (121), a lower sealing edge (122) and at least two supporting rods (3), the upper sealing edge (121) is matched with the second notch (24), the lower sealing edge (122) is matched with the first notch (18), the supporting rods (3) are fixedly connected with the upper sealing edge (121) and the lower sealing edge (122), the opening and closing door (12) is in relative rotating fit with the platform base (1) and the guardrail (2) and has a vertical rotating axis, one end, far away from the rotating axis of the opening and closing door (12), of the upper sealing edge (121) is fixedly provided with a first bulge (1211), one end, close to the guardrail (2) of the first bulge (1211), is fixedly provided with a second, the second projection (25) abuts against the first projection (1211) to allow the opening/closing door (12) to be opened only to the inside of the fire platform.

3. A fire platform as recited in claim 2, wherein: the upper end face of the guardrail (2) is provided with a sliding groove (22), and a movable support (5) is clamped in the sliding groove (22) in a sliding manner.

4. A fire platform as recited in claim 3, wherein: at least one second groove (43) is formed in the upper surface of the extension platform (4), and a movable support (5) is hinged in the second groove (43) in the same way.

5. A fire fighting platform as defined in claim 4, wherein: the movable support (5) comprises a sliding block (51), a first rotating shaft (52) and a U-shaped support (53), the sliding block (51) is in sliding fit with the sliding groove (22), the sliding block (51) of the movable support (5) located in the second groove (43) is hinged to the bottom surface of the second groove (43), the first rotating shaft (52) is perpendicular to the sliding block (51) and is rotatably connected with the sliding block, and the U-shaped support (53) is rotatably connected with one end, far away from the sliding block (51), of the first rotating shaft (52) and is horizontal in rotating axis.

6. A fire fighting platform as defined in claim 5, wherein: first recess (42) have been seted up to the side of extending platform (4) keeping away from fourth recess (11), and first recess (42) internal rotation is connected with fixed pulley (41) that the axis level was arranged, fixed pulley (41)'s surface and rope (7) fixed connection, and rope (7) twine on fixed pulley (41) surface.

7. A fire platform as recited in claim 6, wherein: the supporting rod (3) fixedly connected with the rope (7) is respectively and rotatably connected with the guardrail (2) and the platform base (1).

8. A fire platform as recited in claim 7, wherein: u type support (53) articulate have with U type support (53) lock back formation hollow cylinder's circular arc lid (57), circular arc lid (57) are provided with locking piece (58), U type support (53) keep away from with circular arc lid (57) articulated department seted up notch (531), notch (531) and locking piece (58) joint cooperation.

Images