Telescopic support capable of being assembled with escape fire ladder for fire engineering

Abstract

A telescopic support capable of being assembled with an escape fire ladder in fire engineering comprises a squatting and rising mechanism, a stretching mechanism and a linkage mechanism, and the squatting and rising mechanism can be switched between a squatting position and a standing position; the stretching mechanism is rotationally arranged at the top of the squatting and rising mechanism and is switched between a retraction position and a stretching position; the linkage mechanism is connected between the squatting and rising mechanism and the stretching mechanism and used for driving the forced squatting and rising mechanism and the stretching mechanism to cooperatively act, the telescopic support is switched between the squatting retracting position and the standing stretching position, squatting and standing of the squatting and rising mechanism are achieved through the linkage mechanism, meanwhile, the stretching mechanism is driven to rotate, and the chain wheel can stretch out or retract back conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fire fighting equipment, specifically relates to a telescopic support of fire engineering can assemble escape fire ladder. BACKGROUND

[0002] With the outbreak of fire in the building, the fire in the high-rise building of big city happens, and the escape fire ladder is urgently needed to escape from the high-rise building because the smoke spreads very fast and makes it impossible to realize the usual escape route. The existing escape fire ladder is suspended on the roof and cannot be integrated with the overall design of the high-rise building, which destroys the overall appearance of the building.

[0003] For example, Wuxi Baima Machinery Equipment Co., Ltd. discloses a roof convenient escape ladder storage and release control cabinet (CN108325098A, publication date: July 27, 2018), which comprises a control cabinet body 1, the control cabinet body 1 comprises a storage box body 2 and a lead-out channel 3, a storage turntable 4 is arranged on the two side walls below the inside of the storage box body, and a soft escape ladder 5 with a length of dozens of meters is wound on the storage turntable 4. The above-mentioned device can conveniently release or retract the escape ladder from the roof terrace of the building, and the trapped personnel can very conveniently get on the escape ladder. To want to release from the roof terrace below, a high control cabinet is installed on the roof, which destroys the overall appearance of the building and is not practical.

[0004] Therefore, there is an urgent need in the art for a telescopic support of fire engineering that can assemble escape fire ladders, which is simple in structure, can be extended to support the side of the roof during escape, and can be retracted when not in use, thus becoming a key problem that needs to be overcome in the field of high-rise building escape without destroying the overall appearance of the building. UTILITY MODEL CONTENTS

[0005] In view of the defects in the prior art, the purpose of the utility model is to provide a telescopic support of fire engineering that can assemble escape fire ladders, which solves at least one of the following technical problems: ① simple structure and miniaturization, safe and simple operation; ② without destroying the overall appearance of the building.

[0006] The purpose of the utility model is achieved by a telescopic support of fire engineering that can assemble escape fire ladders, which comprises

[0007] The squatting mechanism can be switched between the squatting position and the standing position.

[0008] The extension mechanism is pivotally arranged on the top of the squatting mechanism and can be switched between the retracted position and the extended position.

[0009] The linkage mechanism, connected between the squatting mechanism and the extension mechanism, is used to drive the forced squatting mechanism and the extension mechanism to work together, so as to switch the telescopic support between the squatting and retracted positions. In the squatting position, the squatting mechanism is in the squatting position and the extension mechanism is in the retracted position; in the retracted position, the squatting mechanism is in the standing position and the extension mechanism is in the extended position.

[0010] Furthermore, the squatting mechanism includes a base, a top seat, a front linkage pair, and a rear linkage pair. The front linkage pair and the rear linkage pair are respectively hinged between the base and the top seat to form a parallelogram. The two ends of the base are fixed.

[0011] Furthermore, the linkage mechanism includes a triangular frame formed by positive and negative screws, a first connecting rod, and a second connecting rod. One end of the first connecting rod and the second connecting rod are hinged to the upper right end of the parallelogram frame L0, and the other end is screwed into the positive and negative screws respectively through a pair of nuts. The positive and negative screws are threaded into the pair of nuts, and the positive and negative screws drive the first connecting rod, the second connecting rod, and the squatting mechanism to switch between a squatting position and a standing position by the approach or departure of the pair of nuts.

[0012] Furthermore, the first link and the second link are of equal length, so that the triangular frame is stably supported at the upper right end of the squatting mechanism.

[0013] Furthermore, the extension mechanism includes a quadrilateral frame L1 consisting of a sprocket frame, a rotating frame, and a connecting rod that are pivotally connected end to end. The rotating frame is provided with a rotation pivot, and the rotating frame is rotatably set at the upper left end point A of the squatting mechanism through the rotation pivot. The tail pivot of the rotating frame is rotatably connected to the right nut of the nut pair of the linkage mechanism through the first linkage rod.

[0014] Furthermore, it also includes a lateral movement module, which includes a slide rail, a slider, and a moving source. The lateral movement pivot of the rotating frame is connected to the vertex of the triangular frame through a rigid connecting rod. The moving source drives the extension mechanism and the triangular frame to move horizontally between the left endpoint H and the right endpoint Q. The right endpoint Q coincides with the upper left endpoint A of the squatting mechanism when it is in the standing position.

[0015] Furthermore, the rotating frame is also equipped with a support pivot, which is rotatably connected to the left nut of the nut pair via a second linkage rod, and the second linkage rod is a telescopic cylinder.

[0016] A retractable support for fire protection engineering can be equipped with an escape ladder. The top of the squatting and standing mechanism is equipped with an extension mechanism 20. The squatting and standing mechanism 10 can be squatted down and stood up through the linkage mechanism 30. At the same time, the extension mechanism is driven to rotate. In the standing position, it can also move horizontally to achieve the maximum forward extension of the sprocket, which has great practical value. Attached Figure Description

[0017] Figure 1The utility model discloses a fire engineering can assemble escape fire ladder's telescopic support's embodiment 1 is located in the main view of standing position,

[0018] Figure 2 The utility model discloses a fire engineering can assemble escape fire ladder's telescopic support's embodiment 1 is located in the main view of squatting position,

[0019] Figure 3 The utility model discloses a fire engineering can assemble escape fire ladder's telescopic support's embodiment 2 is located in the main view of squatting position,

[0020] Figure 4 The utility model discloses a fire engineering can assemble escape fire ladder's telescopic support's embodiment 2 is located in the main view of standing position,

[0021] Figure 5 The utility model discloses a fire engineering can assemble escape fire ladder's telescopic support's embodiment 2 is located in the main view of standing position,

[0022] The reference signs in the above-mentioned drawings are:

[0023] 10 squatting mechanism, 11 base, 12 top seat, 13 front connecting rod pair, 14 rear connecting rod pair, 20 stretching mechanism, 21 sprocket frame, 22 rotating frame, 23 rotating pivot, 24 connecting rod, 25 supporting pivot, 26 head pivot, 27 tail pivot, 30 linkage mechanism, 31 positive and negative screw, 32 first connecting rod, 33 second connecting rod, 34 triangular frame, 35 nut pair, 36 first linkage rod, 37 second linkage rod, 38 first hand wheel, 40 horizontal moving module, 41 slide rail, 42 slide block, 43 moving source, 44 second hand wheel, L0 parallel quadrangle frame, L1 quadrangle frame. DETAILED DESCRIPTION

[0024] The embodiments of the utility model will be described in detail below in combination with the drawings, but not used to limit the scope of the utility model.

[0025] Embodiment 1

[0026] As shown in the figure, a telescopic support of fire engineering can assemble escape fire ladder, comprising Figures 1-2

[0027] Squatting mechanism 10, squatting mechanism 10 can switch between squatting position and standing position,

[0028] Stretching mechanism 20, stretching mechanism 20 is fixedly arranged on the top of squatting mechanism 10 and switches between retracted position and extended position,

[0029] ​Linkage mechanism 30, connected between the squat mechanism 10 and the extension mechanism 20, is used to drive the forced squat mechanism 10 and the extension mechanism to act in coordination, realizing the switching of the telescopic support between the squatting position and the standing position. In the squatting state, the squat mechanism 10 is located at the squatting position while the extension mechanism 20 is located at the retracted position; in the standing state, the squat mechanism 10 is located at the standing position while the extension mechanism 20 is located at the extended position.

[0030] The squat mechanism 10 includes a base 11, a top seat 12, a front connecting rod pair 13 and a rear connecting rod pair 14, which are respectively hingedly connected between the base 11 and the top seat 12 to form a parallelogram L0. The four corner points of the two parallelograms L0 form a frame structure through the cross bars.

[0031] The extension mechanism 20 includes a chain wheel frame 21, a rotating frame 22 and a connecting rod 24 to form a quadrilateral frame L1. The rotating frame 22 is provided with a first pivot 26, a rotating pivot 23, a support pivot 25 and a tail pivot 28. The rotating frame 22 is rotatably arranged at the left upper end point A of the squat mechanism 10 through the rotating pivot 23. The tail pivot 28 of the rotating frame 22 is rotatably connected with the right nut of the nut pair 35 of the linkage mechanism 30 through the first linkage rod 36.

[0032] The linkage mechanism 30 includes a triangular frame 34 composed of a positive and negative screw rod 31, a first connecting rod 32 and a second connecting rod 33. One end of the first connecting rod 32 and the second connecting rod 33 is hingedly connected, and the other end is respectively screwed with the positive and negative screw rod 31 through the nut pair 35. The positive and negative screw rod 31 is threadedly connected with the nut pair 35, and the first connecting rod 32 and the second connecting rod 33 are equal in length. The positive and negative screw rod 31 drives the first connecting rod 32 and the second connecting rod 33 and the squat mechanism 10 to switch between the squatting position and the standing position through the approach or departure of the nut pair 35. Two linkage mechanisms 30 are respectively rotatably supported at the right upper end points of the two parallelograms L0 of the squat mechanism 10.

[0033] The two bottom corners of the two triangular frames 34 form a frame structure through the cross bars, and the top corners are respectively hingedly supported at the right upper end points of the parallelogram. The two positive and negative screw rods 31 are installed on the rack 1, and the hand crank shaft is rotatably arranged in the middle to drive the gear to simultaneously mesh and drive the gears on the two positive and negative screw rods 31 to rotate in the same direction. One end of the hand crank shaft is fixedly provided with a first hand wheel 38.

[0034] Action description: rotate the first hand wheel 38, the linkage mechanism 30 drives the squat mechanism 10 to switch from the standing position to the squatting position, so that the telescopic support is in the squatting state. The extension mechanism 20 is a quadrilateral frame L1, which has three states through the pivot connection at the left upper end point A of the parallelogram L0, namely, the squatting rotation, the standing reverse rotation and the horizontal translation without rotation.

[0035] Embodiment 2

[0036] The horizontal moving mechanism is improved, and other structures are the same as those in Embodiment 1.

[0037] As shown in Figures 3-5 FIG. 1, a fire engineering telescopic support capable of assembling an escape fire ladder also comprises

[0038] The horizontal moving module 40 comprises a slide rail 41, a slide block 42 and a moving source 43, the moving source 43 being a screw-nut pair, and a second hand wheel 44 being fixed to one end of the screw. The moving source 43 drives the slide block 42 and the extension mechanism 20 to move horizontally between a left end point H and a right end point Q, and the right end point Q coincides with the left upper end point A of the squatting mechanism 10 in the standing position. When the squatting mechanism 10 is in the standing position, the horizontal moving module 40 drives the extension mechanism 20 to slide in the slide rail through the slide block at the other pivot connection end G to the left end point H, so that the chain wheel protrudes forward.

[0039] The support pivot 25 of the rotating frame 22 is rotatably connected with the left nut of the nut pair 35 through a second linkage rod 37, and the second linkage rod 37 is a telescopic air cylinder, so that the rotating frame 22 obtains more stable support.

[0040] The rotating pivot 23 of the rotating frame 22 is connected with the top points of the triangular frame 34 through a rigid connection rod 39, so that the horizontal moving module 40 drives the rotating frame 22 and the triangular frame 34 to horizontally move between the left end point H and the right end point Q, and the right end point Q coincides with the left upper end point A of the squatting mechanism 10 in the standing position.

[0041] Action description: when the squatting mechanism 10 is in the standing position, the horizontal moving module 40 is activated, the second hand wheel 44 is rotated to drive the extension mechanism 20 to move to the left end point H, so that the telescopic support is in the standing state; when switching, the second hand wheel 44 is rotated to drive the extension mechanism 20 to move right to the left upper end point A of the squatting mechanism 10, and the squatting mechanism 10 is activated; the squatting mechanism 10 can be switched from the standing position to the squatting position, and at the same time, the quadrilateral frame L0 is driven to rotate counterclockwise through the first linkage rod 36.

[0042] Principle description:

[0043] The present application solves at least one of the following problems:

[0044] (1) The parallelogram four-bar mechanism cooperates with the triangular linkage mechanism to realize the switching of the squatting mechanism from the squatting position to the standing position

[0045] The squatting mechanism 10 is a parallelogram four-bar mechanism with a lower linkage fixed point, which is connected with the linkage mechanism 30 through the right upper top hinge, the linkage mechanism 30 is a triangular linkage mechanism, and the height of the triangular linkage mechanism is changed through the screw-nut pair to realize the squatting and standing of the parallelogram four-bar mechanism.

[0046] (2) The quadrilateral frame L1 is pivoted to the upper left vertex of the parallelogram frame L0, cooperates with the first linkage rod, rotates around the upper left vertex, and realizes the forward rotation of the quadrilateral frame L1 in squatting and the reverse rotation in standing.

[0047] The first linkage rod 36 is rotatable and fixed in length, drives the quadrilateral frame L1 to rotate clockwise to the lowest position when the parallelogram frame L0 is squatting, and drives the quadrilateral frame L1 to rotate counterclockwise to the highest position when the parallelogram frame L0 is standing.

[0048] (3) The horizontal moving mechanism cooperates with the parallelogram frame L0 to realize the extension or retraction of the sprocket in standing.

[0049] When the parallelogram frame L0 is standing, the horizontal moving mechanism 40 drives.

[0050] When the parallelogram mechanism changes from standing to squatting, the first and second linkage rods 36 and 37 are driven by the change of the nut position to rotate the quadrilateral frame around the upper left vertex, that is, the extension is changed to rotation at the same time of the change from standing to squatting.

[0051] A fire engineering telescopic support capable of assembling an escape fire ladder, a squatting mechanism 10 is rotatably arranged on the top of an extension mechanism 20, and the squatting mechanism 10 is realized to squat and stand through a linkage mechanism 30, and the extension mechanism is rotated at the same time, and in the standing position, the extension mechanism can also move horizontally to the left, and the maximum extension of the sprocket is realized, which has great practical value.

Claims

1. A fire engineering retractable stowage for a fire escape ladder, characterised in that, Comprising squatting mechanism (10), the squatting mechanism (10) can be switched between squatting position and standing position; stretching mechanism (20), the stretching mechanism (20) is pivoted on the top of the squatting mechanism (10) and switched between retracted position and extended position; linkage mechanism (30), connected between the squatting mechanism (10) and the stretching mechanism (20), for driving the squatting mechanism (10) and the stretching mechanism (20) to act in coordination, realizing the switching of the telescopic support between the squatting position and the standing position, in the squatting state, the squatting mechanism (10) is in the squatting position while the stretching mechanism (20) is in the retracted position; in the standing state, the squatting mechanism (10) is in the standing position while the stretching mechanism (20) is in the extended position.

2. The retractable stand for a fire escape ladder of claim 1, wherein, The squatting mechanism (10) comprises a base (11), a top seat (12), a pair of front connecting rods (13) and a pair of rear connecting rods (14), the pair of front connecting rods (13) and the pair of rear connecting rods (14) are respectively hinged between the base (11) and the top seat (12) to form a parallelogram frame (L0), and the two ends of the base (11) are fixed.

3. The retractable stanchion of claim 2, wherein, The linkage mechanism (30) comprises a positive and negative screw (31), a first connecting rod (32) and a second connecting rod (33) to form a triangular frame (34), one end of the first connecting rod (32) and the second connecting rod (33) is hinged to the upper right end point of the parallelogram frame L0, and the other end is respectively screwed with the positive and negative screw (31) through the nut pair (35); the positive and negative screw (31) is screwed with the nut pair (35), and the positive and negative screw (31) drives the first connecting rod (32) and the second connecting rod (33) and the squatting mechanism (10) to switch between the squatting position and the standing position through the approach or departure of the nut pair (35).

4. The retractable stand of claim 3, wherein the stand is configured to be used in conjunction with a fire escape ladder. The first connecting rod (32) and the second connecting rod (33) are equal in length, so that the triangular frame (34) is stably supported at the upper right end point of the squatting mechanism (10).

5. A fire protection engineering assembly capable of deploying an escape ladder, as defined in claim 4, wherein, The stretching mechanism (20) comprises a chain wheel frame (21) pivotally connected at the head and tail, a rotating frame (22) and a connecting rod (24) to form a quadrilateral frame (L1), the rotating frame (22) is provided with a rotating pivot (23), the rotating frame (22) is rotatably arranged at the upper left end point A of the squatting mechanism (10) through the rotating pivot (23), and the tail pivot (28) of the rotating frame (22) is rotatably connected with the right nut of the nut pair (35) of the linkage mechanism (30) through the first linkage rod (36).

6. The retractable stand of claim 5, wherein the stand is configured to be used in conjunction with a fire escape ladder. It also includes a horizontal movement module (40), the horizontal movement module (40) comprises a sliding rail (41), a sliding block (42) and a movement source (43), the rotating pivot (23) of the rotating frame (22) is connected with the top point of the triangular frame (34) through the rigid connecting rod (39), the movement source (43) drives the stretching mechanism (20) and the triangular frame (34) to move horizontally between the left end point H and the right end point Q, and the right end point Q coincides with the upper left end point A of the squatting mechanism (10) in the standing position.

7. The retractable stand of claim 5, wherein the stand is configured to be used in conjunction with a fire escape ladder. The rotating frame (22) is also provided with a supporting pivot (25), the supporting pivot (25) is rotatably connected with the left nut of the nut pair (35) through the second linkage rod (37), and the second linkage rod (37) is a telescopic air cylinder.

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