Lifting device for fire rescue
Patent Information
- Application Number
- CN202522333550.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-04
AI Technical Summary
[0003]在现有技术中，如绳索缓降器仅能用于人员下降，无法实现物资的垂直运输，使得消防员进入火场后可能面临装备不足的问题；传统升降装置(如折叠梯、伸缩平台)通常设计为单向运输，消防员到达目标楼层后，仍需依赖人力背负或绳索缓降方式转移被困人员，效率低且风险高；对于行动不便者(如伤员、老人、儿童)，缺乏稳定的载人下降装置，容易在救援过程中发生二次伤害，因此我们提出一种消防救援用升降装置，用于解决上述问题
[0014]本方案通过可折叠框架结构和升降框协同作用，实现了快速部署和升降功能，采用双框架铰接设计，通过销轴快速固定，形成稳定的支撑结构；升降框配备防护挡板和安全绳固定点，确保救援人员和被救者的安全；减速电机带动牵引绳收放，实现平稳的垂直运输。该装置能够同时承载救援人员和必要装备进行上升作业，并可将行动不便者安全运送至地面。
Smart Images
Figure CN224832076U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lifting device technology, and in particular to a lifting device for fire rescue. Background Technology
[0002] In mid- to high-rise building fires, due to the height and rapid spread of fire, traditional firefighting methods (such as climbing stairs or using ropes) are often insufficient to meet rescue needs. For example, trapped individuals may not be able to escape via ordinary staircases. Lifting devices (ladders) can provide a safe passage, enabling firefighters to safely transfer trapped individuals from higher ground to the ground.
[0003] In existing technologies, rope descent devices can only be used for personnel descent and cannot achieve vertical transportation of materials, which may lead to insufficient equipment for firefighters after they enter the fire scene. Traditional lifting devices (such as folding ladders and telescopic platforms) are usually designed for one-way transportation. After firefighters reach the target floor, they still need to rely on manual carrying or rope descent to transfer trapped personnel, which is inefficient and risky. For people with mobility impairments (such as the injured, the elderly, and children), there is a lack of stable personnel descent devices, which can easily lead to secondary injuries during the rescue process. Therefore, we propose a lifting device for fire rescue to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a lifting device for fire rescue.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A lifting device for fire rescue includes a first frame, a second frame hinged to the top of the first frame, two mating sleeves fixedly connected to the outer walls of both the first and second frames, and two pins slidably connected to each of the four mating sleeves in pairs. A support base is fixedly connected to the bottom of the first frame, and a lifting frame is placed on the top of the support base. Two L-shaped pieces are fixedly connected to the outer wall of the lifting frame, and a common baffle is placed between the two L-shaped pieces. Four gaskets are fixedly connected to the outer wall of the lifting frame, and pulleys are rotatably embedded in the outer walls of the four gaskets. An equipment frame is fixedly connected to the outer wall of the second frame, and a reduction motor is fixedly connected to the outer wall of the equipment frame. A traction assembly is provided inside the equipment frame.
[0007] Preferably, the traction assembly includes a take-up and release roller, both ends of which are rotatably connected to the inner wall of the equipment frame. A circular partition is fixedly sleeved on the outer wall of the take-up and release roller. Two traction ropes are wound around the outer wall of the take-up and release roller, one end of each traction rope is fixedly connected to the top of the lifting frame. A main gear is fixedly connected to the outer wall of the output shaft of the reduction motor, and a driven gear is fixedly sleeved on the outer wall of the take-up and release roller. The main gear and the driven gear are meshed together. The lifting frame is driven to perform lifting and lowering operations by setting up the traction assembly.
[0008] Preferably, the outer wall of the support base has multiple foot holes, into which foot nails can be inserted to fix the first frame and the second frame in position by penetrating the ground.
[0009] Preferably, the outer walls of all four pulleys are in contact with the outer wall of the first frame, and the outer walls of the first frame and the second frame are fixedly connected with horizontal support rods to increase the stability of the first frame and the second frame.
[0010] Preferably, the outer wall of the equipment frame has a circular hole, and the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the geared motor, so that the take-up and release rollers are rotated by setting the geared motor.
[0011] Preferably, the outer wall of the equipment frame has two sliding holes, and the inner walls of the two sliding holes are slidably connected to the outer walls of the two traction ropes, respectively, so as to assist the two traction ropes in sliding by setting the two sliding holes.
[0012] Preferably, bearings are fixedly fitted at both ends of the take-up and release rollers, and the outer ring of the bearings is fixedly connected to the inner wall of the equipment frame. The bearings assist the take-up and release rollers in achieving stable rotation.
[0013] Compared with the prior art, the advantages of this utility model are:
[0014] This solution achieves rapid deployment and lifting capabilities through the synergistic effect of a foldable frame structure and a lifting frame. It employs a double-frame hinged design, quickly secured with pins to form a stable support structure. The lifting frame is equipped with protective baffles and safety rope anchor points to ensure the safety of rescue personnel and those being rescued. A geared motor drives the traction rope to extend and retract, achieving smooth vertical transport. This device can simultaneously carry rescue personnel and necessary equipment for ascending operations and can safely transport people with mobility impairments to the ground. Attached Figure Description
[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a three-dimensional structural diagram of a lifting device for fire rescue proposed in this utility model;
[0017] Figure 2 This is a cross-sectional structural diagram of a lifting device for fire rescue proposed in this utility model;
[0018] Figure 3 This is a rear view structural diagram of a lifting device for fire rescue proposed in this utility model;
[0019] Figure 4 This utility model proposes a lifting device for fire rescue. Figure 2 A magnified structural diagram of part A in the diagram;
[0020] Figure 5 This is a partial three-dimensional structural diagram of a lifting device for fire rescue proposed in this utility model.
[0021] In the diagram: 1. First frame; 2. Second frame; 3. Connecting sleeve; 4. Pin; 5. Support base; 6. Lifting frame; 7. L-shaped part; 8. Baffle; 9. Pulley; 10. Horizontal support rod; 11. Equipment frame; 12. Gear motor; 13. Take-up and release rollers; 14. Circular partition; 15. Traction rope; 16. Main gear; 17. Driven gear. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0023] Depend on Figures 1-5 As shown, a lifting device for fire rescue is disclosed, comprising a first frame 1, a second frame 2 hinged to the top of the first frame 1, the hinge being located near the docking sleeve 3, two docking sleeves 3 fixedly connected to the outer walls of both the first frame 1 and the second frame 2, and two pins 4 slidably connected to each of the four docking sleeves 3 in pairs, with pin holes on the outer walls of the two pins 4, and cotter pins inserted into the inner walls of the pin holes, and a support base 5 fixedly connected to the bottom of the first frame 1, the support base 5 supporting the first frame 1 and the second frame 2, and having anti-slip texture on the bottom, with multiple foot holes on the outer wall of the support base 5.
[0024] A lifting frame 6 is placed on top of the support base 5. Two L-shaped parts 7 are fixedly connected to the outer wall of the lifting frame 6. A baffle 8 is placed between the two L-shaped parts 7. The two L-shaped parts 7 support the baffle 8. Four pads are fixedly connected to the outer wall of the lifting frame 6. The outer walls of the four pads are inlaid with pulleys 9 through a shaft. The outer walls of the four pulleys 9 are in contact with the outer wall of the first frame 1. The four pulleys 9 assist the lifting frame 6 to lift stably.
[0025] Both the outer walls of the first frame 1 and the second frame 2 are fixedly connected to horizontal support rods 10. The outer wall of the second frame 2 is fixedly connected to an equipment frame 11. The outer wall of the equipment frame 11 is fixedly connected to a geared motor 12, which is a worm gear geared motor 12. The geared motor 12 is powered by an existing mobile battery. The outer wall of the equipment frame 11 has a circular hole, and the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the geared motor 12.
[0026] The equipment frame 11 is equipped with a traction assembly, which includes a take-up roller 13. Both ends of the take-up roller 13 are fixedly fitted with bearings. The outer ring of the bearings is fixedly connected to the inner wall of the equipment frame 11. Both ends of the take-up roller 13 are rotatably connected to the inner wall of the equipment frame 11. A circular partition 14 is fixedly fitted on the outer wall of the take-up roller 13 to prevent the two traction ropes 15 from getting tangled together.
[0027] Two traction ropes 15 are wound around the outer wall of the take-up and release roller 13. The two traction ropes 15 can be steel wire ropes. Two sliding holes are opened on the outer wall of the equipment frame 11. The inner walls of the two sliding holes are slidably connected to the outer walls of the two traction ropes 15 respectively. One end of each traction rope 15 is fixedly connected to the top of the lifting frame 6, and the other end of each traction rope 15 is fixedly connected to the outer wall of the take-up and release roller 13. A main gear 16 is fixedly connected to the outer wall of the output shaft of the reduction motor 12. A driven gear 17 is fixedly sleeved on the outer wall of the take-up and release roller 13. The main gear 16 and the driven gear 17 are meshed together.
[0028] Working principle: In fire rescue use, the first frame 1 and the second frame 2 are folded and stored together via a hinge. They are then moved to the ground below the building. The second frame 2 is rotated to stand upright, and two pins 4 are inserted into the four connecting sleeves 3 to limit the hinge position, thus fixing the second frame 2 to the top of the first frame 1. The user stands inside the lifting frame 6, inserts the baffle 8 between the two L-shaped pieces 7 for some protection, and attaches the safety rope to the outer wall of the lifting frame 6. As the reduction motor 12 rotates, it drives the main gear 16 to rotate, which in turn drives the driven gear 17 to rotate. The rotation of motor 7 drives the take-up and release roller 13 to rotate, which in turn drives the two traction ropes 15 to wind up. The winding of the two traction ropes 15 drives the lifting frame 6 to rise, which in turn drives the user to rise. At the same time, rescue supplies can be carried up. After reaching the rescue position, the user can enter through the broken window to carry out the rescue operation. The rescuer with limited mobility can be placed in the lifting frame 6. The reverse rotation of the reduction motor 12 drives the take-up and release roller 13 to rotate, which causes the two traction ropes 15 to unwind and descend. As the reduction motor 12 reciprocates, it drives the lifting frame 6 to reciprocate, achieving rapid rescue.
[0029] It should be noted that, in actual use, an existing PLC controller can be added. The PLC controller is electrically connected to the geared motor to facilitate the control of the overall operation.
[0030] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0031] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A lifting device for fire rescue, comprising a first frame (1), characterized in that, The top of the first frame (1) is hinged to the second frame (2). The outer walls of the first frame (1) and the second frame (2) are fixedly connected to two docking sleeves (3). The four docking sleeves (3) are slidably connected to two pins (4) in pairs. The bottom of the first frame (1) is fixedly connected to the support base (5). The top of the support base (5) is placed with a lifting frame (6). The outer wall of the lifting frame (6) is fixedly connected to two L-shaped pieces (7). The same baffle (8) is placed between the two L-shaped pieces (7). The outer wall of the lifting frame (6) is fixedly connected to four gaskets. The outer walls of the four gaskets are rotatably inlaid with pulleys (9). The outer wall of the second frame (2) is fixedly connected to the equipment frame (11). The outer wall of the equipment frame (11) is fixedly connected to a reduction motor (12). The inside of the equipment frame (11) is provided with a traction component.
2. The lifting device for fire rescue according to claim 1, characterized in that, The traction assembly includes a take-up roller (13), both ends of which are rotatably connected to the inner wall of the equipment frame (11). A circular partition (14) is fixedly fitted on the outer wall of the take-up roller (13). Two traction ropes (15) are wound around the outer wall of the take-up roller (13). One end of each traction rope (15) is fixedly connected to the top of the lifting frame (6). A main gear (16) is fixedly connected to the outer wall of the output shaft of the reduction motor (12). A driven gear (17) is fixedly fitted on the outer wall of the take-up roller (13). The main gear (16) and the driven gear (17) are meshed together.
3. The lifting device for fire rescue according to claim 1, characterized in that, The outer wall of the support base (5) has multiple foot holes.
4. A lifting device for fire rescue according to claim 1, characterized in that, The outer walls of the four pulleys (9) are in contact with the outer wall of the first frame (1), and the outer walls of the first frame (1) and the second frame (2) are fixedly connected with horizontal support rods (10).
5. A lifting device for fire rescue according to claim 1, characterized in that, The outer wall of the equipment frame (11) has a circular hole, and the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the geared motor (12).
6. A lifting device for fire rescue according to claim 2, characterized in that, The outer wall of the equipment frame (11) has two sliding holes, and the inner walls of the two sliding holes are slidably connected to the outer walls of the two traction ropes (15).
7. A lifting device for fire rescue according to claim 2, characterized in that, Both ends of the take-up and take-down roller (13) are fixedly fitted with bearings, and the outer ring of the bearing is fixedly connected to the inner wall of the equipment frame (11).