CN211301817U - A foldable step based on an escape platform - Google Patents

Abstract

A folding step based on an escape platform can well realize the construction of an escape channel of high-rise personnel under emergency, and is simple to operate and compact in structure; the foldable type stair climbing mechanism comprises a base and a top plate, wherein a foldable step is arranged on the left side of the base, two sides of the step are formed into a continuous parallelogram structure by means of cross hinge splicing of a plurality of first movable strips and second movable strips, a pedal is connected between two sides of the step, the upper end of the step is connected to the top plate, the lower end of the step is fixed on the base in a sliding mode, a driving system is arranged on the right side of the base and can push the step to move to the left outside the base, when the step moves to the outside of the base, the step is unfolded to form a step structure, and the driving system can; the utility model discloses think about novelty, the structure is ingenious, the realization high-rise personnel that can be fine are in putting up of emergency escape way under emergency, easy operation simultaneously, compact structure.

Description

A foldable step based on an escape platform

technical field

The utility model relates to the technical field of fire safety, in particular to a folding step based on an escape platform.

Background technique

Due to the high floors of high-rise buildings, there are many people inside. When an accident occurs and people need to be evacuated as soon as possible, the speed is relatively slow, and it is easy to cause confusion. The smoke generated by the fire is a toxic gas, which is easy to smoke people down. The corridor is the place with the most smoke. Can not be used, the elevator will be closed, people can only wait for rescue, very passive, there is no device to quickly and safely escape from high-rise buildings.

Therefore, a device that can be installed indoors and can be operated by people to safely escape from high-rise buildings is designed. The device needs to use a step that can be extended to facilitate the use of trapped personnel, but the steps are not in use. When using it, it is necessary to reduce the floor space as much as possible to achieve the purpose of compact structure.

Utility model content

In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a foldable step based on an escape platform, which can well realize the construction of an escape passage for high-level personnel in emergency situations, and at the same time, the operation is simple and the structure is compact. .

The technical solution for solving the problem includes a foldable step based on an escape platform, comprising a base and a top plate, a foldable step is arranged on the left side of the base, and two sides of the step are joined together by a plurality of first movable bars and second movable bars. A continuous parallelogram structure is formed, the pedal is connected between the two sides of the step, the upper end of the step is connected to the top plate, and the lower end of the step is slidably fixed on the base. Outside, when the steps move to the outside of the base, the steps expand to form a stepped structure, and the drive system can also pull the step back into the base.

The utility model has a novel conception and an ingenious structure, which can well realize the construction of the escape passage for high-level personnel under emergency conditions, and is simple in operation and compact in structure.

Description of drawings

FIG. 1 is a schematic front view of the utility model when driven by gears and racks.

FIG. 2 is a schematic front view when the utility model adopts hydraulic drive.

FIG. 3 is a schematic front view of the utility model when the screw drive is adopted.

4 is a schematic cross-sectional view of the connection between the screw and the wheel disc in the present invention.

FIG. 5 is an enlarged schematic view of part A in FIG. 1 of the present utility model.

FIG. 6 is a schematic diagram of the state after the step portion of the present invention is extended.

Detailed ways

The specific embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

It can be seen from Figures 1-6 that a foldable step based on an escape platform includes a base 1 and a top plate 2. There is a foldable step on the left side of the base 1, and both sides of the step are composed of a plurality of first movable bars 3 and second movable bars. The strips 4 are cross-jointed and spliced to form a continuous parallelogram structure, the pedal 5 is connected between the two sides of the step, the upper end of the step is connected to the top plate 2, the lower end of the step is slidably fixed on the base 1, and the right side of the base 1 is provided with a drive system to drive the The system can push the steps to the left to move to the outside of the base 1 . When the steps move to the outside of the base 1 , the steps expand to form a stepped structure, and the drive system can also pull the steps back into the base 1 .

The bottom of the step is provided with a roller 6, the roller 6 is provided with a push plate 7 sleeved on the shaft of the roller 6, and the push plate 7 is connected with the drive system.

The push plate 7 is provided with a T-shaped groove 8, and the drive system is provided with a T-shaped rod 9 inserted into the T-shaped groove 8. When the roller 6 moves left and right, the T-shaped rod 9 and the T-shaped groove 8 are always matched and connected.

The drive system includes a rack 10 disposed on the base 1 and placed horizontally in the left-right direction. The rack 10 is meshed with a gear 11, the gear 11 is connected to the motor 12, and the left side of the rack 10 is fixedly connected to the T-bar 9. The rotation of the motor 12 can push the gear 11 to rotate to drive the rack 10 to move, thereby driving the steps to fold and unfold.

The drive system includes a hydraulic cylinder 17 arranged on the base 1 and placed on the right side of the step. The hydraulic cylinder 17 is connected to a hydraulic pump. The hydraulic cylinder 17 is provided with a hydraulic rod 18 placed horizontally on the left and right, and the left end of the hydraulic rod 18 is connected To the T-shaped rod 9, the hydraulic pump can push the hydraulic rod 18 to move left and right, thereby driving the folding and unfolding of the steps.

The drive system includes a support 19 arranged on the base 1 and placed on the right side of the step portion. The support 19 is threadedly connected with a screw 20 placed horizontally on the left and right, and the screw 20 is provided with a screw placed on the right side of the support 19. Roulette 21, the roulette 21 is connected with the motor 12, the left end of the screw 20 is rotatably connected to the T-bar 9, the roulette 21 and the screw 20 are in a keyway sliding fit, and the roulette 21 and the screw 20 can slide relative to each other. The rotation of the disk 21 can drive the rotation of the screw 20, and the rotation of the screw 20 can drive the left and right movement of the step portion to realize unfolding and folding.

When the utility model is specifically used,

First of all, when the step part is not in use, the step part is contracted in the base 1 . At this time, the first movable bar 3 and the second movable bar 4 of the step are rotated to fold the step, so that the width of the step is reduced, and the width of the base 1 is greatly reduced. The volume ensures the compactness of the structure. When it needs to be used in a critical situation, the steps are expanded through the drive system at this time. The specific driving methods of the steps are described in sequence by the following multiple embodiments:

Embodiment 1: It is realized by the cooperation of the motor 12, the gear 11 and the rack 10. The motor 12 drives the gear 11 to rotate, the gear 11 rotates and drives the rack 10 to move left and right, and the left end of the rack 10 is connected to the push plate 7 at the lower end of the step. When the bar 10 moves to the left, it pushes the steps to move out of the base 1 to the left, thereby unfolding the steps. After the steps are unfolded, a plurality of pedals 5 are arranged in a horizontal position, and people can reach the top plate 2 from the pedals 5 to escape.

Electric power for the motor 12 is supplied by a battery placed on the base 1 .

Embodiment 2: The steps are unfolded through the hydraulic cylinder 17 and the hydraulic rod 18 , and the hydraulic cylinder 17 controls the expansion and contraction of the hydraulic rod 18 to drive the steps to unfold and recover.

Embodiment 3: The expansion and recovery of the steps are realized through the cooperation of the motor 12, the support 19 and the screw 20. The motor 12 drives the wheel disc 21 to rotate, the wheel disc 21 rotates and drives the screw rod 20 to rotate, and the screw 20 is screwed with the support 19. The role of the connection The lower screw 20 moves left and right while rotating, and the left and right movement of the screw 20 realizes the unfolding and recovery of the steps.

In the present invention, in order to facilitate the unfolding and recovery of the steps, the lowermost end of the steps is provided with a roller 6, which slides left and right on the base 1 to provide a sliding track for the steps and a supporting force for the steps.

In order to facilitate the deployment and recovery of the control steps of the drive system, the push plate 7 is sleeved on the roller 6, and the left end of the drive system and the push plate 7 are slidably connected through the cooperation of the T-slot 8 and the T-bar 9, so that the drive system moves left and right When the T-bar 9 is always located inside the T-slot 8, it is ensured that the drive system can always control the unfolding and recovery of the steps.

By designing the folding steps that can be automatically extended and retracted, the utility model can well realize the climbing of the platform. In addition, the structure is simple to operate, and at the same time, the volume of the whole device can be well reduced by the steps that can be folded. , reducing the floor space.

The utility model has a novel conception and an ingenious structure, which can well realize the construction of the escape passage for high-level personnel under emergency conditions, and is simple in operation and compact in structure.

Claims (6)

1. A foldable step based on an escape platform, characterized in that it comprises a base (1) and a top plate (2), a foldable step is provided on the left side of the base (1), and two sides of the step are formed by a plurality of first movable bars. (3) and the second movable bar (4) are cross-jointed to form a continuous parallelogram structure, the pedal (5) is connected between the two sides of the step, the upper end of the step is connected to the top plate (2), and the lower end of the step is slidably fixed on the base ( 1) Above, there is a drive system on the right side of the base (1). The drive system can push the steps to the left to move to the outside of the base (1). When the steps move to the outside of the base (1), the steps expand to form a stepped structure. The step can be pulled back into the base (1). 2 . A foldable step based on an escape platform according to claim 1 , wherein a roller ( 6 ) is provided at the bottom of the step, and the roller ( 6 ) is provided with a shaft sleeved on the roller ( 6 ). 3 . The push plate (7) on the upper plate is connected with the drive system. 3. A foldable step based on an escape platform according to claim 2, wherein the push plate (7) is provided with a T-slot (8), and the drive system is provided with an insertion T-slot ( When the T-bar (9) in 8) and the roller (6) move left and right, the T-bar (9) and the T-slot (8) are always connected together. 4. A foldable step based on an escape platform according to claim 3, characterized in that the drive system comprises a rack (10) arranged on the base (1) and placed horizontally in the left and right directions, the rack (10) is meshed with a gear (11), the gear (11) is connected to the motor (12), the left side of the rack (10) is fixedly connected to the T-bar (9), and the motor (12) rotates to push the gear (11) The rotation drives the rack (10) to move and then drives the folding and unfolding of the steps. 5. A foldable step based on an escape platform according to claim 3, wherein the drive system comprises a hydraulic cylinder (17) arranged on the base (1) and placed on the right side of the step, the hydraulic The cylinder (17) is connected to the hydraulic pump. The hydraulic cylinder (17) is provided with a hydraulic rod (18) placed horizontally on the left and right sides. The left end of the hydraulic rod (18) is connected to the T-shaped rod (9). The hydraulic pump can push the hydraulic rod ( 18) Move left and right to drive the folding and unfolding of the steps. 6. A foldable step based on an escape platform according to claim 3, wherein the drive system comprises a support (19) arranged on the base (1) and placed on the right side of the step portion, The support (19) is threadedly connected with a left and right horizontally placed screw (20), and a wheel (21) placed on the right side of the support (19) is provided on the screw (20), the wheel (21) and the motor (12) ) connection, the left end of the screw rod (20) is connected to the T-bar (9) in rotation, the wheel disc (21) and the screw rod (20) are slidingly fitted with key grooves, and the wheel disc (21) and the screw rod (20) can be opposed to each other Sliding, the rotation of the wheel disk (21) can drive the rotation of the screw rod (20), and the rotation of the screw rod (20) can drive the left and right movement of the step part to realize unfolding and folding.

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