Emergency escape ramp system special for building outer wall of kindergarten building

Abstract

The invention provides an emergency escape ramp system special for an outer wall of a kindergarten building, belongs to the technical field of emergency escape, and solves the technical problems that an existing emergency escape ramp cannot be quickly unfolded outside the kindergarten building, orderly escape of infants cannot be realized, and extrusion and trampling risks are easy to occur. An emergency escape ramp system special for a kindergarten building outer wall comprises an outdoor balcony fixedly installed on the kindergarten building outer wall, fixing rods are fixedly installed on the two sides of the balcony, and the outer wall of the fixing rod on one side is fixedly connected with a first gear column. According to the device, the rotating rod is driven by the operating handle to rotate, so that the limiting rope is cut off, the winding rope is unwound through rotation of the rotating drum, the ramp is downwards rotated and unfolded clockwise, and the wedge-shaped rod is arranged below the bottom hook, so that the wedge-shaped rod is extruded at the bottom of the bottom hook for limiting; and the bottom hook at the bottom is accurately limited and clamped with the fixing rod of the lower balcony.

Description

Technical Field

[0001] The present invention belongs to the technical field of emergency escape, and relates to a special emergency escape ramp for the exterior wall of a kindergarten building, in particular to a special emergency escape ramp system for the exterior wall of a kindergarten building. Background Art

[0002] Currently, most kindergarten buildings use internal stairs or standard external escape stairs for vertical escape. However, in the event of sudden disasters such as earthquakes and fires, it is difficult for young children to quickly and orderly pass through the stairs, which easily causes squeezing, trampling or staying. Relevant research shows that using solutions such as slides and external escape belts helps to improve the escape efficiency. However, the existing facilities have problems such as complex development procedures and difficult deployment system maintenance in actual applications, especially being not very suitable for multi-story buildings.

[0003] After retrieval, a kindergarten building with an escape slide disclosed in a Chinese patent document [Application No.: CN201310658281.5; Publication No.: CN104695737A] has a barrier-free entrance platform ramp at the south entrance on the first floor, a morning inspection room facing the entrance gate, a public toilet on the north side, an accessible toilet inside, a medical room on its north side, adjacent to an isolation room, a toilet in the isolation room, a library opposite the isolation room, and three kindergarten class suites on the south side are connected by a middle corridor. Each suite consists of a children's bedroom, a children's activity room, a children's washroom, a children's toilet, and a children's cloakroom. The children's bedroom and activity room are on the south side, and the children's washroom, toilet, and cloakroom are on the north side of the activity room and bedroom. There is a platform outside each bedroom window for viewing on rainy and snowy days.

[0004] Although the kindergarten building disclosed in this patent can directly access the outside through the escape ladder, however, by simply fixedly installing the escape ladder outside the multi-story building, it occupies a large space, has a high installation cost, and is easily used by children as a slide for playing, increasing potential safety hazards, and cannot ensure the orderly use of children in the event of sudden disasters, affecting the evacuation efficiency and safety of children. Summary of the Invention

[0005] The purpose of the present invention is to address the above problems existing in the prior art, and propose a special emergency escape ramp system for the exterior wall of a kindergarten building. The technical problem to be solved by this invention is: how to achieve the rapid deployment of the emergency escape ramp outside the kindergarten building, facilitate the orderly escape of children, and prevent the risks of squeezing and trampling.

[0006] The purpose of the present invention can be achieved by the following technical solutions: An emergency escape ramp system dedicated to the outer wall of a kindergarten building, comprising an outdoor balcony fixedly installed on the outer wall of the kindergarten building. Fixed rods are fixedly installed on both sides of the balcony, and a first gear column is fixedly connected to the outer wall of one of the fixed rods. A second gear column is meshed and connected to the top of the first gear column, and a movable rod is fixedly connected to the inside of the second gear column. Connecting hooks are rotatably connected to both ends of the movable rod, and the connecting hooks rotate on the outer wall of the fixed rod. A folding plate is fixedly connected to the inner side of the connecting hook, and a sliding plate is fixedly connected to the inner side of the folding plate; Side rods are fixedly connected to the surfaces of both connecting hooks. A bottom hook is fixedly connected to the end of the side rod away from the connecting hook. A lead screw is arranged below the side rod. The lead screw is rotatably connected between the connecting hook and the bottom hook, and an escape deployment unit is installed on the outer wall of the lead screw; Sleeve tubes are rotatably sleeved on the outer walls of both side rods. A gear groove is opened at one end of the sleeve tube close to the connecting hook. A first gear disk is meshed and connected to the outer wall of the gear groove, and a transmission rod is fixedly connected to the bottom end of the first gear disk. The transmission rod is rotatably installed inside the connecting hook. A first bevel gear is fixedly connected to the end of the transmission rod away from the first gear disk, and a second bevel gear is meshed and connected to the bottom end of the first bevel gear. The second bevel gear is fixedly connected to the outer wall of the movable rod; The escape deployment unit includes a fixed block fixedly connected to the outer wall of the lead screw. A winding rope is fixedly connected to one side of the fixed block. The end of the winding rope away from the fixed block is fixedly connected to a rotating cylinder, and the winding rope is wound and connected to the outer wall of the rotating cylinder. The outside of the rotating cylinder is rotatably connected to a fixed cylinder, and a rotating handle is fixedly connected to the outer wall of the rotating cylinder. The rotating handle is located outside the fixed cylinder, and a limiting rope is fixedly connected to the outer end of the rotating handle; A connecting block is connected to the outer wall of the lead screw through a ball nut, and a cross bar is fixedly connected to the outer wall of the connecting block. A wedge-shaped rod is telescopically connected to the outer wall of the cross bar, and the wedge-shaped rod is located below the bottom hook. A fourth spring is arranged between the wedge-shaped rod and the cross bar, and the fourth spring is sleeved on the outer wall of the cross bar.

[0007] The working principle of the present invention is as follows: When in use, by rotating the rotating rod through the operating handle, the rotating rod drives the second gear disk to rotate. Through the symmetric meshing arrangement of the second gear disk with the two racks, the two racks drive the connecting plate and the cutting blade to move towards each other synchronously, so that the two cutting blades cut off the limiting rope. As a result, the limiting bead on one side of the fixed box does not limit the limiting rope, so that the limiting rope cannot fix the rotating handle on one side, and the rotating handle is not limited, so that the rotating cylinder rotates to unwind the winding rope. When the rotating cylinder rotates, the friction block is frictionally pressed against the rotating cylinder under the elastic action of the first spring and the second spring, which is convenient for the friction block to limit the rotating speed of the rotating cylinder under the centrifugal action, ensuring the stability of the ramp when rotating downward. Moreover, by arranging a pressing block on one side of the friction block, the pressing block can push the friction block secondly, ensuring the centrifugal pressing effect of the friction block and the rotating quality of the ramp. At the same time, when the ramp rotates downward, by meshing and connecting the second gear column above the first gear column, the second gear column drives the movable rod to rotate inside the two connecting hooks. By fixedly connecting the second bevel gear to the outer wall of the movable rod, the movable rod drives the second bevel gear to rotate synchronously. Under the meshing action of the first bevel gear and the second bevel gear, the first gear disk drives the gear groove to rotate synchronously. Under the fixing action of the gear groove and the sleeve, the two sleeves rotate synchronously on the outer walls of the two side rods, so that the sleeve drives the outer wall protective net to unfold on both sides of the slide plate by rotation. When the bottom hook at the bottom of the ramp rotates to the fixed rod on one side of the lower balcony for clamping, the two protective nets rotate to a vertical angle on both sides of the slide plate, so that the two protective nets and the slide plate form a "U" - shaped structure, which is convenient for children to slide on the surface of the slide plate and facilitates the rapid escape and evacuation of children. Moreover, through the setting of the protective net, the path is closed, ensuring the orderliness of escape and the moving path. At the same time, by telescopically arranging a wedge - shaped rod at the bottom of the bottom hook, the wedge - shaped rod is limited at the bottom end of the bottom hook under the elastic action of the fourth spring, ensuring the connection effect of the bottom hook. When recycling the ramp, by rotating the screw rod on one side of the connecting hook, the rotation of the screw rod drives the connecting block to move, so that the whole connecting block moves, and the wedge - shaped rod does not limit the bottom of the bottom hook. At the same time, by the user reversely rotating the rotating handle in the fixed cylinder, the rotating handle can drive the rotating cylinder to rotate inside the fixed cylinder, so that the winding rope can recycle the ramp, which is convenient for the user to maintain the used ramp, facilitating the subsequent use of the ramp and reducing the maintenance cost.

[0008] One side of the limiting rope away from the rotating handle penetrates and is connected to a fixed box, and a limiting bead is fixedly connected to the outer end of the limiting rope. The limiting bead is attached to the outer wall of the fixed box. A rotating rod is rotatably connected inside the fixed box, and an operating handle is fixedly connected to the outer wall of the rotating rod. The operating handle is located outside the fixed box.

[0009] With the above structure, by setting the limit beads on one side of the limit rope, the limit beads can maintain the stability of the limit rope on one side of the limit rope. Moreover, through the fixed connection between the other end of the limit rope and the rotating handle, the stability of the position of the rotating handle is ensured, the rotation of the rotating cylinder driven by the rotating handle is avoided, and the limiting effect of the rotating cylinder is achieved.

[0010] A second gear disc is fixedly installed on the outer wall of the rotating rod, and two racks are symmetrically meshed and connected on both sides of the second gear disc. The outer ends of the two racks are fixedly connected with connecting plates, and the connecting plates are slidably connected to the inner wall of the fixed box. The outer walls of the connecting plates are fixedly connected with cutting blades, and the two cutting blades are respectively located above and below the limit rope; A sliding groove for accommodating the sliding of the connecting plate is provided on the inner wall of the fixed box, and a plurality of return springs are fixedly connected to the outer wall of the connecting plate. The other ends of the return springs are fixedly connected to the inner wall of the fixed box.

[0011] With the above structure, through the symmetric meshing setting of the second gear disc and the racks, when the operating handle drives the second gear disc to rotate through the rotating rod, the two racks synchronously drive the connecting plates and the cutting blades to move towards each other, so that the two cutting blades cut the limit rope, the rotating handle is not limited, and the winding rope is unwound through the rotating cylinder, which is convenient for the winding rope to drive the ramp to rotate clockwise downward and unfold, ensuring the emergency use effect of the emergency escape ramp in case of emergency.

[0012] The connecting hooks and the bottom hooks are symmetrically arranged on both sides of the sliding plate, and the two connecting hooks are symmetrically arranged about the central axis of the sliding plate.

[0013] With the above structure, through the setting of the connecting hooks and the bottom hooks, it is convenient to connect the ramp with the balcony. The bottom hook can be accurately docked with the lower balcony, ensuring the installation stability of the ramp and the evacuation efficiency.

[0014] A fixed cylinder is fixedly connected to the outer wall of the rotating cylinder, and the fixed cylinder is fixedly installed on the outer wall. A friction block is attached to the inner wall of the rotating cylinder, and a first spring is fixedly connected to the outer wall of the friction block. The other end of the first spring is fixedly connected to a movable plate, and a guide rod is connected through the interior of the movable plate. The guide rod is fixedly connected to the inner wall of the rotating cylinder; A second spring is fixedly installed on the surface of the movable plate, and the other end of the second spring is fixedly installed with a resisting block, and the resisting block is located on one side of the friction block.

[0015] With the above structure, the friction block is frictionally pressed against the rotating cylinder under the elastic action of the first spring and the second spring, which is convenient for the friction block to limit the rotation speed of the rotating cylinder under the centrifugal force, ensuring the stability of the ramp when rotating downward.

[0016] The outer wall of the lead screw is connected with a connecting block through a ball nut, and a cross bar is fixedly connected to the outer wall of the connecting block. The outer wall of the cross bar is telescopically connected with a wedge-shaped rod, and the wedge-shaped rod is located below the bottom hook. A fourth spring is arranged between the wedge-shaped rod and the cross bar, and the fourth spring is sleeved on the outer wall of the cross bar; The lead screw and the side rod are arranged in parallel, and an operating block is fixedly connected to the outer end of the lead screw. The operating block is located inside the connecting hook.

[0017] With the above structure, the lead screw and the side rod are arranged outside the skateboard, the structure is compact, and the space between the connecting hook and the bottom hook is reasonably utilized. Moreover, by fixedly connecting the operating block to the end of the lead screw, the user can rotate the lead screw through the operating block at the connecting hook. Under the action of installing the connecting block on the lead screw surface through the ball nut, it is convenient for the whole connecting block to move, facilitating the user to disassemble the limit at the bottom of the bottom hook.

[0018] A protective net is fixedly connected to the outer wall of the sleeve.

[0019] With the above structure, the protective net is composed of a rigid metal frame and wire mesh, ensuring that the protective net is unfolded synchronously on both sides of the skateboard, facilitating the protection of children. At the same time, it ensures the closure of the sliding path, ensures the safety of children during escape, and prevents children from slipping.

[0020] Compared with the prior art, the special emergency escape ramp system for the outer wall of kindergartens of the present invention has the following advantages: 1. In the present invention, by driving the rotating rod to rotate through the operating handle, the limiting rope is cut off, so that the winding rope is unwound through the rotation of the rotating cylinder, and the ramp rotates clockwise downward and unfolds. Moreover, by arranging the wedge-shaped rod below the bottom hook, the wedge-shaped rod is squeezed to limit at the bottom of the bottom hook, so that the bottom hook is accurately and limit-connected with the fixing rod of the lower balcony, ensuring the rapid unfolding of the whole emergency escape ramp system. Moreover, by meshing and connecting the second gear column above the first gear column, the second gear column drives the movable rod to rotate. By fixedly connecting the second bevel gear to the outer wall of the movable rod, under the meshing action of the first bevel gear and the second bevel gear, the first gear disk synchronously drives the gear groove to rotate, so that the sleeve drives the protective net to unfold on both sides of the skateboard through the drive, making the protective nets on both sides and the skateboard form a "U" - shaped structure, facilitating children to slide on the surface of the skateboard, changing the children's escape method from "climbing the building" to "sliding", effectively reducing the risks of extrusion and trampling. Moreover, it is flexible and convenient to unfold during use, avoiding the problem of large floor area in the normal setting, reducing costs, and being suitable for popularization and use in kindergartens.

[0021] 2. In the present invention, by providing a fixed cylinder on one side of the fixed box, when the rotating cylinder rotates, the friction block is frictionally pressed against the rotating cylinder under the elastic action of the first spring and the second spring, facilitating the friction block to limit the rotating speed of the rotating cylinder under the centrifugal action, ensuring the stability of the ramp during downward rotation. Moreover, by providing a pressing block on one side of the friction block, the pressing block can secondarily push the friction block, ensuring the centrifugal pressing effect of the friction block, guaranteeing the rotating quality of the ramp, and avoiding the excessive downward gravity of the ramp from affecting its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural view of a special emergency escape ramp system for the exterior wall of a kindergarten building according to the present invention; Figure 2 is a schematic cross-sectional structural view of a special emergency escape ramp system for the exterior wall of a kindergarten building according to the present invention; Figure 3 In the present invention Figure 2 the enlarged structural view at B; Figure 4 is a schematic top view of the escape deployment unit according to the present invention; Figure 5 In the present invention Figure 1 the enlarged structural view at A; Figure 6 is a schematic cross-sectional structural view of the fixed box according to the present invention; Figure 7 is a schematic cross-sectional structural view of the fixed cylinder according to the present invention; Figure 8 In the present invention Figure 7 the structural view at C; Figure 9 is a schematic connection structural view of the rotary handle and the limiting rope according to the present invention; Figure 10 is a schematic connection structural view of the bottom hook and the wedge rod according to the present invention; Figure 11 is a schematic deployment structural view of a special emergency escape ramp for the exterior wall of a kindergarten building according to the present invention; Figure 12 is a schematic structural view of the sleeve and the protective net according to the present invention; Figure 13 is a schematic deployment path structural view of a special emergency escape ramp for the exterior wall of a kindergarten building according to the present invention.

[0023] In the figure, 1 is the balcony; 2 is the fixed rod; 3 is the first gear column; 4 is the second gear column; 5 is the movable rod; 6 is the connecting hook; 7 is the folding plate; 8 is the side rod; 9 is the screw rod; 10 is the sleeve; 11 is the gear groove; 12 is the first gear disc; 13 is the transmission rod; 14 is the first bevel gear; 15 is the second bevel gear; 16 is the protective net; 17 is the bottom hook; 18 is the sliding plate; 19 is the fixed block; 20 is the coiled rope; 21 is the limit rope; 22 is the fixed box; 23 is the rotating rod; 24 is the operating handle; 25 is the chute; 26 is the slider; 27 is the second gear disc; 28 is the rack; 29 is the connecting plate; 30 is the cutting piece; 31 is the fixed cylinder; 32 is the rotating cylinder; 33 is the friction block; 34 is the first spring; 35 is the movable plate; 36 is the guiding rod; 37 is the abutting block; 38 is the second spring; 39 is the reset spring; 40 is the connecting block; 41 is the cross bar; 42 is the fourth spring; 43 is the wedge-shaped rod; 44 is the rotating handle. Specific implementation mode

[0024] The following are specific embodiments of the present invention and in combination with the attached drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0025] As Figures 1 - 13 shown, a special emergency escape ramp system for the outer wall of a kindergarten building includes an outdoor balcony 1 fixedly installed on the outer wall of the kindergarten building. Fixed rods 2 are fixedly installed on both sides of the balcony 1, and a first gear column 3 is fixedly connected to the outer wall of one of the fixed rods 2. The top of the first gear column 3 is meshed with a second gear column 4, and a movable rod 5 is fixedly connected to the inside of the second gear column 4. Connecting hooks 6 are rotatably connected to both ends of the movable rod 5, and the connecting hooks 6 rotate on the outer wall of the fixed rod 2. A folding plate 7 is fixedly connected to the inner side of the connecting hook 6, and a sliding plate 18 is fixedly connected to the inner side of the folding plate 7; Side rods 8 are fixedly connected to the surfaces of both connecting hooks 6. The end of the side rod 8 far from the connecting hook 6 is fixedly connected to a bottom hook 17. A screw rod 9 is arranged below the side rod 8. The screw rod 9 is rotatably connected between the connecting hook 6 and the bottom hook 17, and an emergency deployment unit is installed on the outer wall of the screw rod 9; Sleeves 10 are rotatably sleeved on the outer walls of both side rods 8. A gear groove 11 is opened at one end of the sleeve 10 close to the connecting hook 6. The outer wall of the gear groove 11 is meshed with a first gear disc 12, and a transmission rod 13 is fixedly connected to the bottom end of the first gear disc 12. The transmission rod 13 is rotatably installed inside the connecting hook 6. The end of the transmission rod 13 far from the first gear disc 12 is fixedly connected to a first bevel gear 14, and the bottom end of the first bevel gear 14 is meshed with a second bevel gear 15. The second bevel gear 15 is fixedly connected to the outer wall of the movable rod 5; The escape deployment unit includes a fixed block 19 fixedly connected to the outer wall of the lead screw 9. One side of the fixed block 19 is fixedly connected to a winding rope 20. The end of the winding rope 20 away from the fixed block 19 is fixedly connected to a rotating cylinder 32, and the winding rope 20 is wound around the outer wall of the rotating cylinder 32. The outer side of the rotating cylinder 32 is rotatably connected to a fixed cylinder 31, and a rotating handle 44 is fixedly connected to the outer wall of the rotating cylinder 32. The rotating handle 44 is located outside the fixed cylinder 31, and a limiting rope 21 is fixedly connected to the outer end of the rotating handle 44; The outer wall of the lead screw 9 is connected to a connecting block 40 through a ball nut, and a cross bar 41 is fixedly connected to the outer wall of the connecting block 40. A wedge-shaped rod 43 is telescopically connected to the outer wall of the cross bar 41. The wedge-shaped rod 43 is located below the bottom hook 17, and a fourth spring 42 is provided between the wedge-shaped rod 43 and the cross bar 41. The fourth spring 42 is sleeved on the outer wall of the cross bar 41.

[0026] The working principle of the present invention is: when in use, the rotating rod 23 is rotated by the operating handle 24, so that the rotating rod 23 drives the second gear plate 27 to rotate, and the symmetrical meshing arrangement of the second gear plate 27 and the two racks 28 makes the two racks 28 synchronously drive the connecting plate 29 and the cutting blades 30 to move toward each other, so that the two cutting blades 30 cut the limiting rope 21, so that the limiting bead does not limit the limiting rope 21 on one side of the fixed box 22, so that the limiting rope 21 cannot be fixed on one side of the rotating handle 44, so that the rotating handle 44 is not limited, so that the rotating drum 32 is rotated to unwind the winding rope 20, and when the rotating drum 32 rotates, the friction block 33 rubs against the rotating drum 32 under the elastic action of the first spring 34 and the second spring 38. The friction block 33 is tightly pressed, so that the friction block 33 can limit the rotation speed of the drum 32 under the centrifugal action, ensuring the stability of the ramp when it rotates downward, and by arranging a stop block 37 on one side of the friction block 33, the stop block 37 can push the friction block 33 for a second time, ensuring the centrifugal pressing effect of the friction block 33 and the rotation quality of the ramp. At the same time, when the ramp rotates downward, the second gear column 4 is meshed and connected above the first gear column 3, so that the second gear column 4 drives the movable rod 5 to rotate inside the two connecting hooks 6, and the second bevel gear 15 is fixedly connected to the outer wall of the movable rod 5, so that the movable rod 5 synchronously drives the second bevel gear 15 to rotate, and under the meshing action of the first bevel gear 14 and the second bevel gear 15 , the first gear plate 12 synchronously drives the gear groove 11 to rotate, and under the fixing action of the gear groove 11 and the sleeve 10, the sleeves 10 on both sides rotate synchronously on the outer walls of the side rods 8 on both sides, so that the sleeve 10 drives the outer wall protection net 16 to unfold on both sides of the slide plate 18 through rotation, and when the bottom hook 17 at the bottom of the ramp rotates to the fixed rod 2 on one side of the lower balcony 1 for clamping, the protection nets 16 on both sides of the slide plate 18 are rotated to a vertical angle, so that the two protection nets 16 and the slide plate 18 are in a "凵" type structure, which is convenient for children to slide on the surface of the slide plate 18, and convenient for children to quickly escape and evacuate. In addition, the path is closed by setting the protection net 16, which ensures the orderliness and movement path of escape. By telescopically setting a wedge-shaped rod 43 at the bottom of the bottom hook 17, the wedge-shaped rod 43 is limited at the bottom end of the bottom hook 17 under the elastic action of the fourth spring 42, thereby ensuring the connection effect of the bottom hook 17. When the ramp is recovered, the screw rod 9 is rotated on one side of the connecting hook 6 so that the screw rod 9 rotates and drives the connecting block 40 to move, thereby causing the connecting block 40 to move as a whole, so that the wedge-shaped rod 43 does not limit the bottom of the bottom hook 17. At the same time, by the user rotating the handle 44 in the opposite direction on one side of the fixed cylinder 31, the handle 44 can drive the rotating cylinder 32 to rotate inside the fixed cylinder 31, so that the winding rope 20 can recover the ramp, thereby facilitating the user to maintain the ramp after use, facilitating the subsequent use of the ramp, and reducing maintenance costs.

[0027] One side of the limit rope 21 away from the turning handle 44 penetrates and is connected to a fixed box 22, and a limit bead is fixedly connected to the outer end of the limit rope 21. The limit bead is fitted and connected to the outer wall of the fixed box 22. A rotating rod 23 is rotatably connected inside the fixed box 22, and an operating handle 24 is fixedly connected to the outer wall of the rotating rod 23. The operating handle 24 is located outside the fixed box 22.

[0028] With the above structure, in order to ensure the installation quality of the fixed box 22, the fixed box 22 is fixedly installed more than 1.1 meters above the outer wall of the exterior wall to prevent the operating handle 24 from being accidentally rotated by children, ensuring the working safety of the emergency escape ramp. Moreover, by setting a limit bead on one side of the limit rope 21, the limit bead can maintain the stability of the limit rope 21 on one side of the limit rope 21. Moreover, through the fixed connection between the other end of the limit rope 21 and the turning handle 44, the stability of the position of the turning handle 44 is ensured, avoiding the turning handle 44 driving the rotating cylinder 32 to rotate, and realizing the limiting effect of the rotating cylinder 32.

[0029] A second gear disk 27 is fixedly installed on the outer wall of the rotating rod 23, and two rack bars 28 are symmetrically meshed and connected on both sides of the second gear disk 27. The outer ends of the two rack bars 28 are both fixedly connected to a connecting plate 29. The connecting plate 29 is slidably connected to the inner wall of the fixed box 22, and cutting blades 30 are fixedly connected to the outer walls of the connecting plate 29. The two cutting blades 30 are respectively located above and below the limit rope 21. Slide blocks 26 are fixedly connected to both sides of the connecting plate 29, and the outer walls of the slide blocks 26 are slidably connected to a chute 25. The chute 25 is fixedly connected to the inner wall of the fixed box 22; A chute 25 for accommodating the sliding of the connecting plate 29 is provided on the inner wall of the fixed box 22, and a plurality of return springs 39 are fixedly connected to the outer wall of the connecting plate 29. The other ends of the return springs 39 are fixedly connected to the inner wall of the fixed box 22.

[0030] With the above structure, through the symmetric meshing arrangement of the second gear disk 27 and the rack bars 28, when the operating handle 24 drives the second gear disk 27 to rotate through the rotating rod 23, the two rack bars 28 synchronously drive the connecting plate 29 and the cutting blades 30 to move towards each other, so that the two cutting blades 30 cut the limit rope 21, enabling the winding rope 20 to be unwound through the rotating cylinder 32, facilitating the winding rope 20 to drive the ramp to rotate clockwise downward and unfold, ensuring the emergency use effect of the emergency escape ramp in case of an emergency.

[0031] The connecting hooks 6 and the bottom hooks 17 are symmetrically arranged on both sides of the sliding plate 18, and the two connecting hooks 6 are symmetrically arranged about the central axis of the sliding plate 18.

[0032] With the above structure, through the arrangement of the connecting hooks 6 and the bottom hooks 17, it is convenient to connect the ramp to the balcony 1. The bottom hook 17 can be accurately docked with the lower balcony 1, ensuring the installation stability of the ramp and the evacuation efficiency.

[0033] The outer wall of the rotary cylinder 32 is fixedly connected with a fixed cylinder 31, the fixed cylinder 31 is fixedly installed on the outer wall, the inner wall of the rotary cylinder 32 is in fitting connection with a friction block 33, and the outer wall of the friction block 33 is fixedly connected with a first spring 34. The other end of the first spring 34 is fixedly connected with a movable plate 35, and a guide rod 36 penetrates through the interior of the movable plate 35. The guide rod 36 is fixedly connected to the inner wall of the rotary cylinder 32; The surface of the movable plate 35 is fixedly installed with a second spring 38, and the other end of the second spring 38 is fixedly installed with a stopper 37. The stopper 37 is located on one side of the friction block 33.

[0034] With the above structure, the friction block 33 is frictionally pressed against the rotary cylinder 32 under the elastic action of the first spring 34 and the second spring 38, which is convenient for the friction block 33 to limit the rotation speed of the rotary cylinder 32 under the centrifugal force, ensuring the stability of the ramp during downward rotation.

[0035] The outer wall of the lead screw 9 is connected with a connecting block 40 through a ball nut, and the outer wall of the connecting block 40 is fixedly connected with a cross bar 41. The outer wall of the cross bar 41 is telescopically connected with a wedge-shaped rod 43. The wedge-shaped rod 43 is located below the bottom hook 17, and a fourth spring 42 is arranged between the wedge-shaped rod 43 and the cross bar 41. The fourth spring 42 is sleeved on the outer wall of the cross bar 41; The lead screw 9 is arranged in parallel with the side rod 8, and the outer end of the lead screw 9 is fixedly connected with an operating block, and the operating block is located inside the connecting hook 6.

[0036] With the above structure, the lead screw 9 and the side rod 8 are arranged outside the sliding plate 18, the structure is compact, the space between the connecting hook 6 and the bottom hook 17 is reasonably utilized, and by fixedly connecting the operating block at the end of the lead screw 9, the user can rotate the lead screw 9 through the operating block at the connecting hook 6. Under the action of installing the connecting block 40 on the surface of the lead screw 9 through the ball nut, it is convenient for the whole connecting block 40 to move, facilitating the user to disassemble the bottom limit of the bottom hook 17.

[0037] The outer wall of the sleeve 10 is fixedly connected with a protective net 16.

[0038] With the above structure, the protective net 16 is composed of a hard metal frame and a wire mesh, ensuring that the protective net 16 is synchronously unfolded on both sides of the sliding plate 18, facilitating the protection of children, while ensuring the closure of the sliding path, ensuring the safety of children during escape, and preventing children from slipping.

[0039] In summary, in the present invention, when the operating handle 24 drives the rotating rod 23 to rotate, the limiting rope 21 is cut off, so that the winding rope 20 is unwound through the rotation of the rotating cylinder 32, and the ramp rotates downward and unfolds clockwise. Moreover, by arranging the wedge-shaped rod 43 below the bottom hook 17, the wedge-shaped rod 43 is squeezed to limit the bottom of the bottom hook 17, so that the bottom hook 17 at the bottom is accurately and limitedly clamped with the fixing rod 2 of the lower balcony 1, ensuring the rapid unfolding of the entire system of the emergency escape ramp. Moreover, by meshing and connecting the second gear column 4 above the first gear column 3, the second gear column 4 drives the movable rod 5 to rotate. By fixedly connecting the second bevel gear 15 to the outer wall of the movable rod 5, under the meshing action of the first bevel gear 14 and the second bevel gear 15, the first gear disk 12 synchronously drives the gear groove 11 to rotate, so that the protective net 16 is unfolded on both sides of the slide plate 18 through driving by the sleeve 10, and the protective nets 16 on both sides and the slide plate 18 form a "U" - shaped structure, facilitating children to slide on the surface of the slide plate 18, changing the children's escape method from "climbing the stairs" to "sliding", effectively reducing the risk of extrusion and trampling. Moreover, it is flexible and convenient to unfold during use, avoiding the problem of the occupied area of the normal setting, reducing costs, being suitable for popularization and use in kindergartens, and solving the technical problems that the current emergency escape ramp cannot be quickly unfolded outside the kindergarten building, cannot enable children to escape orderly, and is prone to the risk of extrusion and trampling.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An emergency escape ramp system dedicated to the outer wall of a kindergarten building, including an outdoor balcony fixedly installed on the outer wall of the kindergarten building. Fixed rods are fixedly installed on both sides of the balcony, and a first gear column is fixedly connected to the outer wall of one of the fixed rods. A second gear column is meshed and connected to the top of the first gear column, and a movable rod is fixedly connected to the inside of the second gear column. Connecting hooks are rotatably connected to both ends of the movable rod, and the connecting hooks rotate on the outer wall of the fixed rod. A folding plate is fixedly connected to the inner side of the connecting hook, and a sliding plate is fixedly connected to the inner side of the folding plate; Side rods are fixedly connected to the surfaces of both connecting hooks. The end of the side rod away from the connecting hook is fixedly connected to a bottom hook. A lead screw is arranged below the side rod. The lead screw is rotatably connected between the connecting hook and the bottom hook, and an escape deployment unit is installed on the outer wall of the lead screw; Sleeve tubes are rotatably sleeved on the outer walls of the side rods on both sides. A gear groove is opened at one end of the sleeve tube close to the connecting hook. A first gear disk is meshed and connected to the outer wall of the gear groove, and a transmission rod is fixedly connected to the bottom end of the first gear disk. The transmission rod is rotatably installed inside the connecting hook. A first bevel gear is fixedly connected to the end of the transmission rod away from the first gear disk, and a second bevel gear is meshed and connected to the bottom end of the first bevel gear. The second bevel gear is fixedly connected to the outer wall of the movable rod; The escape deployment unit includes a fixed block fixedly connected to the outer wall of the lead screw. A winding rope is fixedly connected to one side of the fixed block. The end of the winding rope away from the fixed block is fixedly connected to a rotating cylinder, and the winding rope is wound and connected to the outer wall of the rotating cylinder. A fixed cylinder is rotatably connected to the outside of the rotating cylinder, and a rotating handle is fixedly connected to the outer wall of the rotating cylinder. The rotating handle is located outside the fixed cylinder, and a limiting rope is fixedly connected to the outer end of the rotating handle; A connecting block is connected to the outer wall of the lead screw through a ball nut, and a cross bar is fixedly connected to the outer wall of the connecting block. A wedge-shaped rod is telescopically connected to the outer wall of the cross bar. The wedge-shaped rod is located below the bottom hook, and a fourth spring is arranged between the wedge-shaped rod and the cross bar. The fourth spring is sleeved on the outer wall of the cross bar.

2. The special emergency escape ramp system for the exterior wall of a kindergarten building according to claim 1, wherein The side of the limiting rope away from the rotating handle penetrates through a fixed box, and a limiting bead is fixedly connected to the outer end of the limiting rope. The limiting bead is fitted and connected to the outer wall of the fixed box. A rotating rod is rotatably connected to the inside of the fixed box, and an operating handle is fixedly connected to the outer wall of the rotating rod. The operating handle is located outside the fixed box.

3. The special emergency escape ramp system for the outer wall of a kindergarten building according to claim 2, characterized in that, A second gear disk is fixedly installed on the outer wall of the rotating rod, and two racks are symmetrically meshed and connected to both sides of the second gear disk. Connecting plates are fixedly connected to the outer ends of the two racks. The connecting plates are slidably connected to the inner wall of the fixed box, and cutting blades are fixedly connected to the outer walls of the connecting plates. The two cutting blades are respectively located above and below the limiting rope; A sliding groove for accommodating the sliding of the connecting plate is opened on the inner wall of the fixed box, and a plurality of reset springs are fixedly connected to the outer wall of the connecting plate. The other ends of the reset springs are fixedly connected to the inner wall of the fixed box.

4. A special emergency escape ramp system for the exterior wall of a kindergarten building according to claim 1, characterized in that, The connecting hook and the bottom hook are symmetrically arranged on both sides of the sliding plate, and the two connecting hooks are symmetrically arranged about the central axis of the sliding plate.

5. The special emergency escape ramp system for the exterior wall of a kindergarten building according to claim 4, characterized in that, The outer wall of the rotating cylinder is fixedly connected with a fixed cylinder, and the fixed cylinder is fixedly installed on the outer wall. The inner wall of the rotating cylinder is in fitting connection with a friction block, and the outer wall of the friction block is fixedly connected with a first spring. The other end of the first spring is fixedly connected with a movable plate, and a guide rod is penetrated through the interior of the movable plate, and the guide rod is fixedly connected to the inner wall of the rotating cylinder; The surface of the movable plate is fixedly installed with a second spring, and the other end of the second spring is fixedly installed with a blocking block, and the blocking block is located on one side of the friction block.

6. The special emergency escape ramp system for the outer wall of a kindergarten building according to claim 1, wherein The outer wall of the lead screw is connected with a connecting block through a ball nut, and the outer wall of the connecting block is fixedly connected with a cross bar. The outer wall of the cross bar is telescopically connected with a wedge-shaped rod, and the wedge-shaped rod is located below the bottom hook, and a fourth spring is arranged between the wedge-shaped rod and the cross bar, and the fourth spring is sleeved on the outer wall of the cross bar; The lead screw and the side rod are arranged in parallel, and the outer end of the lead screw is fixedly connected with an operating block, and the operating block is located inside the connecting hook.

7. The special emergency escape ramp system for the exterior wall of a kindergarten building according to claim 1, characterized in that, The outer wall of the sleeve is fixedly connected with a protective net.

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