Rescue ladder

Abstract

The utility model discloses a rescue ladder, which relates to the technical field of rescue ladders, and comprises a main ladder supported on the ground; the extension ladder is connected to the sliding rail of the main ladder in a sliding manner, and is fixed through a locking assembly after the position is adjusted; the suspension arm is movably arranged on the extension ladder and is locked and fixed through a fixing assembly after the position of the suspension arm is adjusted, and a wiring hole is formed in the suspension arm; the moving mechanism comprises a capstan installed on the main ladder, a roller is rotatably installed in the capstan, and a steel wire rope is installed on the roller. According to the utility model, the main ladder and the extension ladder are arranged, the length of the main ladder can be increased through the extension ladder, and the applicability of the device is improved; and by means of the arranged moving mechanism, people can be lifted down from a high place, and people having difficulty in moving can be rescued conveniently.

Description

Technical Field

[0001] This utility model relates to the field of rescue ladder technology, and in particular to a rescue ladder. Background Technology

[0002] In the field of air transport, aircraft crashes are extremely serious emergencies, and how to quickly and effectively carry out rescue operations and ensure the safety of those in distress becomes a critical challenge. Traditional rescue equipment is often insufficient to meet the complex and ever-changing rescue needs in aircraft crash scenarios.

[0003] Common single-ladder rescue ladders have a fixed height, which cannot be flexibly adjusted to accommodate different levels of fuselage damage and terrain elevation differences during aircraft crashes. This makes it difficult to accurately connect with the rescue location, resulting in reduced rescue efficiency. Moreover, most traditional rescue ladders only focus on building a passage from a height to the ground and lack specific designs for people with mobility impairments or serious injuries, making it impossible to safely and quickly hoist them from heights to a safe area. Therefore, to facilitate the rescue of people with mobility impairments, this device designs a rescue ladder. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a rescue ladder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rescue ladder includes:

[0007] The main ladder is supported on the ground.

[0008] An extension ladder is slidably connected to the slide rail of the main ladder and is fixed by a locking assembly after the position is adjusted.

[0009] The boom is movably mounted on the extension ladder and locked in place by a fixing component after the position is adjusted. The boom has a cable routing hole inside.

[0010] The moving mechanism includes a winch mounted on the main ladder. A roller is rotatably mounted inside the winch. A wire rope is mounted on the roller. The end of the wire rope away from the roller moves out of the inside of the winch and extends into the inside of the cable routing hole. A hook is mounted on the end of the wire rope away from the roller.

[0011] A drive assembly for realizing the winding / unwinding of the wire rope.

[0012] The above technical solution further includes: the locking assembly includes multiple slots formed on the side wall of the extension ladder; a fixing plate is fixedly installed on the side wall of the main ladder; a plug rod is slidably connected to the fixing plate; a spring is sleeved on the outside of the plug rod; one end of the spring is fixedly connected to the outer wall of the plug rod; the end of the spring away from the plug rod is fixedly connected to the inner wall of the fixing plate; a through hole is formed on the side wall of the main ladder; and the end of the plug rod moves through the through hole and is inserted into the inside of one of the slots.

[0013] The extension ladder has a movable groove inside, and the outer wall of the boom is slidably connected to the inner wall of the movable groove. The fixing component includes a threaded hole on the outer wall of the extension ladder, which is connected to the inside of the movable groove. A set screw is threaded to the inner wall of the threaded hole, and the set screw is used to fix the boom.

[0014] The drive assembly includes a worm gear. A worm gear is fixedly mounted on the outer wall of the roller. A worm is rotatably connected to the inner wall of the winch. The worm gear and the worm mesh with each other. A rotating rod is fixedly connected to the end of the worm away from the inner wall of the winch. The end of the rotating rod away from the worm is rotatably connected to the inner wall of the winch. A driving bevel gear is fixedly mounted on the outer wall of the rotating rod. A first rotating shaft is also rotatably mounted on the inner wall of the winch via a bearing rod. A driven bevel gear is fixedly mounted on the end wall of the first rotating shaft. The driving bevel gear and the driven bevel gear mesh with each other. A connecting belt is mounted on the end of the first rotating shaft away from the driven bevel gear. A second rotating shaft is rotatably mounted at the middle position of the inner wall of the winch. The end of the connecting belt away from the first rotating shaft is mounted on the second rotating shaft. The second rotating shaft extends movably through the outer wall of the winch and extends to the outside of the winch. A handwheel is fixedly mounted on the end wall of the second rotating shaft.

[0015] The main ladder has a through groove on its outer wall, and the extension ladder has a through hole on its outer wall. The steel wire rope passes through the through hole and enters the moving groove. The through hole and the through groove are arranged parallel to each other.

[0016] A first support rod is rotatably mounted on the side wall of the main ladder. A second support rod is rotatably mounted on the end of the first support rod away from the main ladder. A third support rod is rotatably mounted on the end of the second support rod away from the first support rod. The end of the third support rod away from the second support rod is rotatably connected to the outer wall of the main ladder. A support plate is mounted on the outer wall of the first support rod. A placement groove is opened on the side wall of the second support rod. When the third support rod is folded, a portion of its volume is located within the placement groove.

[0017] The outer wall of the extended ladder is movably fitted with a side ladder, and multiple L-shaped supports are fixedly installed on the outer wall of the extended ladder. Multiple sleeves are fixedly installed on the side wall of the side ladder, and a rotating shaft is fixedly installed on the outer wall of the L-shaped support. The rotating shaft is rotatably connected to the inside of the sleeve.

[0018] The outer wall of the extended ladder is provided with an installation groove, in which a stretcher is embedded and installed. Handles are installed at the four corners of the outer wall of the stretcher.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. In this utility model, a main ladder and an extension ladder are provided. The extension ladder can extend the length of the main ladder and improve the applicability of the device.

[0021] 2. This utility model is equipped with a moving mechanism, which can be used to lower people down from a height, making it easier to rescue people with mobility impairments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a rescue ladder proposed in this utility model;

[0023] Figure 2 This is a partial unfolded structural diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of a rescue ladder proposed in this utility model;

[0025] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0026] Figure 5 This is a structural schematic diagram of the present invention in its rear view state;

[0027] Figure 6 This is a schematic diagram of the first layer cross-sectional structure in the rear view state of this utility model;

[0028] Figure 7 This is a schematic diagram of the second layer cross-sectional structure in the rear view state of this utility model;

[0029] Figure 8 This is a schematic diagram of the third layer cross-sectional structure in the rear view state of this utility model;

[0030] Figure 9 for Figure 6 Enlarged structural diagram at point B;

[0031] Figure 10 for Figure 8 Enlarged structural diagram at point C;

[0032] Figure 11 for Figure 7 A magnified structural diagram at point D.

[0033] In the picture:

[0034] 10. Main ladder; 20. Extension ladder; 30. Hoist; 40. Side ladder; 41. L-shaped support; 42. Sleeve; 51. Insert rod; 52. Fixing plate; 53. Spring; 54. Slot; 55. Through hole; 61. Support plate; 62. First support rod; 63. Second support rod; 64. Third support rod; 71. Winch; 72. Roller; 73. Wire rope; 74. Through groove; 75. Through hole; 76. Moving groove; 77. Cable hole; 78. Hook; 81. Worm gear; 82. Worm; 83. Rotating rod; 84. Driving bevel gear; 85. Driven bevel gear; 86. First rotating shaft; 87. Connecting belt; 88. Second rotating shaft; 89. Handwheel; 90. Stretcher. Detailed Implementation

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] Example 1

[0037] See attached document Figure 1-11 ,include:

[0038] Main ladder 10, which is supported on the ground;

[0039] The extension ladder 20 is slidably connected to the slide rail of the main ladder 10 and is fixed by a locking component after the position is adjusted.

[0040] The boom 30 is movably mounted on the extension ladder 20 and locked in place by a fixing component after the position is adjusted. The boom 30 has a cable routing hole 77 inside.

[0041] The locking assembly includes multiple slots 54 formed on the side wall of the extension ladder 20. A fixing plate 52 is fixedly installed on the side wall of the main ladder 10. A plug rod 51 is slidably connected to the fixing plate 52. A spring 53 is sleeved on the outside of the plug rod 51. One end of the spring 53 is fixedly connected to the outer wall of the plug rod 51, and the other end of the spring 53 away from the plug rod 51 is fixedly connected to the inner wall of the fixing plate 52. A through hole 55 is formed on the side wall of the main ladder 10. The end of the plug rod 51 moves through the through hole 55 and is inserted into the inside of one of the slots 54. After the distance between the extension ladder 20 and the main ladder 10 is adjusted, the locking assembly can fix the main ladder 10 and the extension ladder 20 together. That is, when the extension ladder 20 is pulled to a suitable position, the plug rod 51 can be inserted into the inside of the slot 54 to lock and fix the extension ladder 20. Under the elastic force of the spring 53, the stability of the plug rod 51 inserted into the slot 54 can be improved.

[0042] The extension ladder 20 has a movable groove 76 inside. The outer wall of the boom 30 is slidably connected to the inner wall of the movable groove 76. The fixing component includes a threaded hole on the outer wall of the extension ladder 20. The threaded hole is connected to the inside of the movable groove 76. A set screw is threaded to the inner wall of the threaded hole. The set screw is used to fix the boom 30. Here, the position of the boom 30 can be fixed by the set screw. That is, when the position of the boom 30 is moved, the set screw can be rotated clockwise to fix the boom 30.

[0043] The moving mechanism includes a winch 71 mounted on the main ladder 10. A roller 72 is rotatably mounted inside the winch 71. A wire rope 73 is mounted on the roller 72. One end of the wire rope 73 away from the roller 72 moves out from the inside of the winch 71 and extends into the inside of the cable hole 77. A hook 78 is mounted on the end of the wire rope 73 away from the roller 72.

[0044] The drive assembly, used to achieve the winding / unwinding of the wire rope 73, includes a worm gear 81. The worm gear 81 is fixedly mounted on the outer wall of the roller 72. A worm 82 is rotatably connected to the inner wall of the winch 71. The worm gear 81 and the worm 82 mesh. A rotating rod 83 is fixedly connected to the end of the worm 82 away from the inner wall of the winch 71. The end of the rotating rod 83 away from the worm 82 is rotatably connected to the inner wall of the winch 71. A drive bevel gear 84 is fixedly mounted on the outer wall of the rotating rod 83. The winch 7... The inner wall of winch 71 is also rotatably mounted with a first rotating shaft 86 via a bearing rod. A driven bevel gear 85 is fixedly mounted on the end wall of the first rotating shaft 86. The driving bevel gear 84 and the driven bevel gear 85 mesh with each other. A connecting belt 87 is mounted on the end of the first rotating shaft 86 away from the driven bevel gear 85. A second rotating shaft 88 is rotatably mounted at the middle position of the inner wall of winch 71. The end of the connecting belt 87 away from the first rotating shaft 86 is mounted on the second rotating shaft 88. The second rotating shaft 88 moves through the outer wall of winch 71 and extends... A handwheel 89 is fixedly installed on the end wall of the second rotating shaft 88, extending to the outside of the winch 71. When winding / unwinding the wire rope 73, the handwheel 89 can be rotated, causing the second rotating shaft 88 to rotate. The second rotating shaft 88 then rotates the connecting belt 87, which in turn rotates the first rotating shaft 86. The first rotating shaft 86 then rotates the driven bevel gear 85, which meshes with the driving bevel gear 84, thereby rotating the rotating rod 83. The rotating rod 83 then... When the worm 82 rotates, the threads on the outer wall of the worm 82 mesh with the teeth on the worm wheel 81, thereby driving the worm wheel 81 to rotate. The worm wheel 81 drives the roller 72 to rotate, thus realizing the winding of the wire rope 73 onto the roller 72 and the release of the wire rope 73 from the roller 72. Clockwise winding and counterclockwise release cause the position of the adjusting hook 78 to be adjusted. That is, when winding the wire rope 73, the hook 78 moves closer to the boom 30, and when releasing the wire rope 73, the hook 78 moves away from the boom 30.

[0045] It should be noted that the winch 71 has multiple installation chambers inside, which separates the installation of the roller 72, worm gear 81, and connecting belt 87.

[0046] A through groove 74 is provided on the outer wall of the main ladder 10, and a through hole 75 is provided on the outer wall of the extension ladder 20. The steel wire rope 73 passes through the through hole 75 and enters the interior of the moving groove 76. The through hole 75 and the through groove 74 are arranged parallel to each other. When the extension ladder 20 moves, the position of the through hole 75 moves accordingly. In order to avoid the main ladder 10 causing movement interference to the steel wire rope 73, the through groove 74 is provided on the outer wall of the main ladder 10. That is, when the position of the through hole 75 moves, the steel wire rope 73 moves inside the through groove 74.

[0047] A first support rod 62 is rotatably mounted on the side wall of the main ladder 10. A second support rod 63 is rotatably mounted on the end of the first support rod 62 away from the main ladder 10. A third support rod 64 is rotatably mounted on the end of the second support rod 63 away from the first support rod 62. The end of the third support rod 64 away from the second support rod 63 is rotatably connected to the outer wall of the main ladder 10. A support plate 61 is mounted on the outer wall of the first support rod 62. A placement groove is opened on the side wall of the second support rod 63. When the third support rod 64 is folded, a portion of its volume is contained within the placement groove. A side support frame is provided here to reinforce the stability of the main ladder 10; that is, the side support frame can be unfolded. Figure 2 The state in, and expand to Figure 2 When the side support frame is in the middle state, the connection points between the first support rod 62 and the main ladder 10, the connection points between the second support rod 63 and the third support rod 64, and the connection points between the third support rod 64 and the main ladder 10 are all locked and fixed with bolts and nuts to improve the stability of the side support frame after it is deployed.

[0048] A side ladder 40 is movably installed on the outer wall of the extension ladder 20. Multiple L-shaped supports 41 are fixedly installed on the outer wall of the extension ladder 20. Multiple sleeves 42 are fixedly installed on the side wall of the side ladder 40. A rotating shaft is fixedly installed on the outer wall of the L-shaped support 41. The rotating shaft is rotatably connected to the inside of the sleeve 42. The rotating shaft and the sleeve 42 are connected by an interference fit. The side ladder 40 is used to assist climbing.

[0049] The outer wall of the extension ladder 20 has an installation groove, in which a stretcher 90 is embedded. Handles are installed at the four corners of the outer wall of the stretcher 90. The two sides of the installation groove are open, meaning that when moving longitudinally, pulling the bottom of the stretcher will detach the stretcher from the installation groove, separating the ladder from the ladder. The purpose of the stretcher 90 is to allow the person to land on the outside of the stretcher after being lowered from a height, thus facilitating the quick transfer of the rescued person by rescuers. In addition, straps can be installed on the stretcher to secure the rescued person to the stretcher 90, improving the safety of the person on the stretcher 90 during transport.

[0050] In this embodiment, the working principle of the device is as follows: when using the device for rescue, first stretch the main ladder 10 and the extension ladder 20 to a suitable length. When the main ladder 10 and the extension ladder 20 are separated, it is necessary to pull the bottom handle of the stretcher 90 to separate the stretcher 90 from the extension ladder 20, so that the stretcher 90 is above the main ladder 10. This makes it easier for the rescued person to be lowered from a height and land on the stretcher 90.

[0051] Then, the boom 30 is fixed by the locking assembly, and then the position of the boom 30 is moved and adjusted. After adjusting to the appropriate position, the boom 30 is locked and fixed by the set screw.

[0052] Then fix the bottom of the main ladder 10 to the ground, and then fix the top of the extension ladder 20 to the high rescue position;

[0053] Next, hook 78 is connected to the safety harness of the person being rescued. Then, handwheel 89 is turned counterclockwise to move hook 78 away from boom 30, thereby enabling the person to be lowered from the height. After the person is lowered from the height, they are moved to stretcher 90. Then stretcher 90 is removed from 10, and four rescuers can lift the four handles on stretcher 90 to transfer the trapped person.

[0054] In this invention, a moving mechanism can be used to lower trapped personnel from a height, and the moving mechanism has a self-locking function, which improves the safety of trapped personnel moving in the air and thus enhances the practicality of the device.

[0055] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rescue ladder, characterized in that, include: Main ladder (10), which is supported on the ground; An extension ladder (20) is slidably connected to the slide rail of the main ladder (10) and fixed by a locking assembly after the position is adjusted; The boom (30) is movably mounted on the extension ladder (20) and locked in place by a fixing component after the position is adjusted. The boom (30) has a cable routing hole (77) inside. The moving mechanism includes a winch (71) mounted on the main ladder (10), a roller (72) rotatably mounted inside the winch (71), a wire rope (73) mounted on the roller (72), one end of the wire rope (73) away from the roller (72) moving out from the inside of the winch (71) and extending into the inside of the cable hole (77), and a hook (78) mounted on the other end of the wire rope (73) away from the roller (72). A drive assembly for winding / unwinding the wire rope (73).

2. A rescue ladder according to claim 1, characterized in that, The locking assembly includes multiple slots (54) opened on the side wall of the extension ladder (20). A fixing plate (52) is fixedly installed on the side wall of the main ladder (10). A plug rod (51) is slidably connected on the fixing plate (52). A spring (53) is sleeved on the outside of the plug rod (51). One end of the spring (53) is fixedly connected to the outer wall of the plug rod (51), and the other end of the spring (53) away from the plug rod (51) is fixedly connected to the inner wall of the fixing plate (52). A through hole (55) is opened on the side wall of the main ladder (10). The end of the plug rod (51) moves through the inside of the through hole (55) and is inserted into the inside of one of the slots (54).

3. A rescue ladder according to claim 2, characterized in that, The extension ladder (20) has a movable groove (76) inside. The outer wall of the boom (30) is slidably connected to the inner wall of the movable groove (76). The fixing component includes a threaded hole on the outer wall of the extension ladder (20). The threaded hole is connected to the inside of the movable groove (76). The inner wall of the threaded hole is threaded with a set screw, which is used to fix the boom (30).

4. A rescue ladder according to claim 3, characterized in that, The drive assembly includes a worm gear (81), which is fixedly mounted on the outer wall of the roller (72). A worm (82) is rotatably connected to the inner wall of the winch (71). The worm gear (81) and the worm (82) mesh with each other. A rotating rod (83) is fixedly connected to one end of the worm (82) away from the inner wall of the winch (71). The other end of the rotating rod (83) away from the worm (82) is rotatably connected to the inner wall of the winch (71). A drive bevel gear (84) is fixedly mounted on the outer wall of the rotating rod (83). A first rotating shaft (86) is also rotatably mounted on the inner wall of the winch (71) via a bearing rod. A driven bevel gear (85) is fixedly installed on the end wall of the shaft (86). The driving bevel gear (84) and the driven bevel gear (85) mesh with each other. A connecting belt (87) is installed on the end of the first shaft (86) away from the driven bevel gear (85). A second shaft (88) is rotatably installed in the middle of the inner wall of the winch (71). The end of the connecting belt (87) away from the first shaft (86) is installed on the second shaft (88). The second shaft (88) moves through the outer wall of the winch (71) and extends to the outside of the winch (71). A handwheel (89) is fixedly installed on the end wall of the second shaft (88).

5. A rescue ladder according to claim 4, characterized in that, The main ladder (10) has a through groove (74) on its outer wall and the extension ladder (20) has a through hole (75) on its outer wall. The wire rope (73) passes through the through hole (75) and enters the moving groove (76). The through hole (75) and the through groove (74) are arranged parallel to each other.

6. A rescue ladder according to claim 5, characterized in that, A first support rod (62) is rotatably installed on the side wall of the main ladder (10). A second support rod (63) is rotatably installed on the end of the first support rod (62) away from the main ladder (10). A third support rod (64) is rotatably installed on the end of the second support rod (63) away from the first support rod (62). The end of the third support rod (64) away from the second support rod (63) is rotatably connected to the outer wall of the main ladder (10). A support plate (61) is installed on the outer wall of the first support rod (62). A placement groove is opened on the side wall of the second support rod (63). After the third support rod (64) is folded, a portion of its volume is located in the placement groove.

7. A rescue ladder according to claim 6, characterized in that, The outer wall of the extended ladder (20) is movably mounted with a side ladder (40). Multiple L-shaped supports (41) are fixedly mounted on the outer wall of the extended ladder (20). Multiple sleeves (42) are fixedly mounted on the side wall of the side ladder (40). A rotating shaft is fixedly mounted on the outer wall of the L-shaped support (41). The rotating shaft is rotatably connected to the inside of the sleeve (42).

8. A rescue ladder according to claim 7, characterized in that, The outer wall of the extended ladder (20) is provided with an installation groove, and a stretcher (90) is embedded in the installation groove. Handles are installed at the four corners of the outer wall of the stretcher (90).

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