Aerial landing device
A technology for descenders and components, applied in life-saving equipment, building rescue, etc., can solve problems such as uneven force, no disclosure of rope rewinding technology, and inconvenience.
Inactive Publication Date: 2015-04-22
宋平
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Problems solved by technology
[0003] In order to overcome the disadvantages of unreasonable crankshaft force structure and undisclosed rope rewinding technology in the current aerial descender that adopts the crankshaft and speed-limiting piston, causing potential danger and inconvenience to the user, the present invention proposes an aerial descender, which The principle is: install synchronously rotating rotating components on both sides of the rope around the coil and use two sets of hydraulic speed limiting devices. When one set of hydraulic speed limiting device is in the no-load position, the other set of hydraulic speed limiting device is not in the no-load position. , thus solving the problem of uneven force; and by setting a one-way rotating device, when the rope drives the rope to rotate in one direction under the action of gravity, it drives the crankshaft to rotate, and when the crankshaft rotates, it drives the hydraulic speed limiting assembly to act, but When the rope rotates in the opposite direction around the coil, the crankshaft does not rotate, and the hydraulic speed limiting component does not act, thus solving the problem of rope winding
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[0065] Figure 1 to Figure 4 It is a schematic diagram of the principle of piston force;
[0066] Figure 5 to Figure 10 It is a structural schematic diagram of the first embodiment of the present invention, Figure 5 is the stereogram of the body, Image 6 Front view of internal structure, Figure 7 It is the C-C sectional view of this embodiment, Figure 8 It is the A-A sectional view of this embodiment, Figure 9 It is the B-B sectional view of this embodiment, Figure 10 It is the B-B sectional view of this embodiment.
[0067] exist figure 1 , figure 2 It shows that, taking the piston 3.2A as an example, during the whole working process of the piston, the cold will swing back and forth around the piston pivot 3.4AA at a small angle, and at the position shown in the figure, the angle between the X axis and the Y axis The absolute value is the largest, and the force on the piston is the largest at this time. This paper refers to the full-load position when the pis...
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Disclosed in the present invention is an aerial landing device, which mainly comprises a rope spool assembly (2), synchronous rotating assemblies (4A,4B), a first hydraulic speed-limiting assembly (3A), and a second hydraulic speed-limiting assembly (3B). The rope spool assembly mainly includes spools (2.1A,2.1B), a rope (2.31), and a fixing member (2.41) at an end of the rope. The synchronous rotating assemblies are provided at both sides of the rope spool assembly. Either of the first and second hydraulic speed-limiting assemblies mainly comprises a crankshaft (3.1A,3.1B) and a speed-limiting piston (3.2A,3.2B). When the first hydraulic speed-limiting assembly is in an idling position, the second hydraulic speed-limiting assembly is not in the idling position, thus a problem of non-uniform stress existed in prior aerial landing device is solved. The rope drives the rope spool assembly to rotate in one direction under the action of gravity so as to drive the either crankshaft to rotate back, thus the hydraulic speed-limiting assemblies are actuated accordingly. However, when the rope spool assembly rotates in the opposite direction, the crankshafts do not rotate back and the hydraulic speed-limiting assemblies are not actuated. This manner of unidirectional rotation solves a problem of back-winding of the rope existed in prior aerial landing device.
Description
technical field [0001] The invention relates to a landing device, in particular to a hydraulic speed-limiting aerial descender. Background technique [0002] In daily life or work, people often encounter danger at high places. If there is no other way to escape, they need to escape by means of air landing devices. Known air landing devices include friction speed limiting, manual braking speed limiting and Hydraulic damping speed-limiting type, the first two disadvantages are poor reliability, the last one is relatively simple in structure, and its performance is also relatively reliable. CN87216143 discloses a kind of air landing device that uses a piston and a cam to limit the speed, but the cam only bears pressure and does not bear pressure. Pull force, there is uneven speed limit during the landing process; ZL2003101127389 and ZL2003201232361 respectively disclose a principle of connecting the crankshaft with a hydraulic speed-regulating controller, but due to the use of ...
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IPC IPC(8): A62B1/12
CPCA62B1/12
Inventor 何少敦
Owner 宋平