High-altitude escape descent control device

Abstract

The utility model relates to a high-altitude escape descent control device which comprises a shell, and a main gear, a planet gear and a gear ring which are in meshing transmission with one another are arranged in the shell. A driving gear disc is coaxially fixed to the main gear, a plurality of mounting grooves are formed in the driving gear disc in the radial direction, and one rolling part is contained in each mounting groove in a one-to-one correspondence mode; a through hole is formed in the middle of the speed reduction disc, the driving gear disc is located in the through hole, a plurality of speed reduction grooves are formed in the hole wall of the through hole in the radial direction, the adjacent speed reduction grooves are in arc transition, and the speed reduction grooves can bear the rolling parts thrown out of the mounting grooves by centrifugal force in the rotating process. The rolling part is positioned in an area formed by the mounting groove and the speed reducing groove to form rigid contact while rolling, so that the speed of the main gear is reduced; a wire groove for containing a safety rope is formed in the circumferential direction of a planet carrier of the planet wheel. The two ends of the safety rope stretch out through rope outlet holes of the shell. The speed reducer is good in adaptability, heat fading is avoided, impact resistance is slightly affected by the environment, and speed reduction stability is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to emergency rescue equipment technical field more specifically relates to a high altitude escape slow descender. BACKGROUND

[0002] The high altitude escape slow descender as a kind of emergency rescue equipment has important application value in disaster scenes such as fire, earthquake, and its core function is to ensure personnel to descend to the ground at safe speed through controllable deceleration mechanism.At present, the slow descender on the market generally adopts the way that friction block and brake device contact to produce resistance to realize deceleration, such as in the prior art, personnel on high-rise building adopts the slow descender of friction block in the process of slow descent, rotating disc high-speed rotation, gear has friction block, under the cooperation of gear and gear ring, drive friction block rotation, and constantly rub and impact with deceleration assembly, make the rotating speed of friction block and gear reduce, and then reduce the rotating speed of rotating disc, to achieve the purpose of high altitude slow descent.

[0003] And the structure in prior art is high in environmental sensitivity, as follows:

[0004] Fear of water, friction coefficient decreases when meeting water, water can cause the surface lubricity of friction block to enhance, and reduce the friction coefficient.For example, if friction block is made of metal or composite material, water film may be formed on the surface after meeting water, weaken the contact resistance with brake component, cause deceleration failure.Long-term contact with water can cause metal parts to rust or non-metallic materials (such as resin-based composite materials) to swell, cause the deformation or damage of friction block structure, affect the braking stability.

[0005] Fear of oil, oil substances attached to the surface of friction block can form a lubricating layer, significantly reduce the friction, and make the braking effect sharply decrease.

[0006] Fear of high temperature: in the process of high-speed friction, the temperature of friction block rises sharply (may exceed the heat resistance limit of material), causes the friction coefficient to decrease significantly (namely "thermal recession"), and the braking capacity is weakened or even completely fails.Friction block may deform under high temperature.

[0007] And in actual application, water, oil and high temperature may exist simultaneously (such as high temperature in fire scene accompanied by fire-fighting water spraying or oil leakage), and multiple factors superimposed can accelerate the performance degradation of friction block, even cause sudden braking failure, seriously affect the safe descent of high-rise personnel to the ground.

[0008] Therefore, how to provide a high altitude escape slow descender is a problem to be solved by the person skilled in the art. UTILITY MODEL CONTENT

[0009] Therefore, the utility model aims at providing a high altitude escape slow descender, to solve the problem that the existing high altitude escape slow descender is high in environmental sensitivity and easy to fail.

[0010] The utility model discloses a high altitude escape slow descending device, including the casing, the casing has the main gear wheel, the planetary gear and the gear ring of mutual meshing transmission inside,

[0011] Coaxial fixed drive gear disc is arranged on the main gear wheel, and a plurality of installation grooves are arranged in the radial direction of the drive gear disc, and one rolling part is accommodated in each installation groove;

[0012] Further comprising a speed reducer, the speed reducer has a through hole in the middle, the drive gear disc is in the through hole, a plurality of speed reduction grooves are arranged along the radial direction of the hole wall of the through hole, and the adjacent speed reduction grooves are circularly arc transition, the speed reduction groove can receive the rolling part thrown out from the installation groove by centrifugal force in the rotating process, and the rolling part is in the area formed by the installation groove and the speed reduction groove, and the rolling part forms rigid contact by rolling and climbing, so that the speed of the main gear wheel is reduced;

[0013] Among them, the wire slot accommodating the safety rope is arranged in the circumferential direction of the planet carrier of the planetary gear, and the two ends of the safety rope are stretched out through the rope outlet hole of the casing.

[0014] According to the high altitude escape slow descending device of the utility model, the casing includes a first casing and a second casing which are detachably connected, and a lifting hole is arranged on the second casing.

[0015] According to the high altitude escape slow descending device of the utility model, the drive gear disc, the speed reducer and the rolling part are closed and connected through a first plate body and a second plate body, one end of the gear shaft of the main gear wheel passes through the first plate body for support, and the other end passes through the drive gear hole in the middle of the second plate body, the middle of the gear ring and the planet carrier to the second casing in sequence.

[0016] According to the high altitude escape slow descending device of the utility model, the division circle where the speed reduction groove is located is greater than the division circle where the installation groove is located.

[0017] According to the high altitude escape slow descending device of the utility model, the rolling part is a steel rolling shaft structure.

[0018] According to the high altitude escape slow descending device of the utility model, the rolling shaft structure, the drive gear disc and the speed reducer are all made of carbon steel or stainless steel.

[0019] According to the high altitude escape slow descending device of the utility model, the casing is provided with a steel wire limiting wheel corresponding to the rope outlet hole.

[0020] According to the high altitude escape slow descending device of the utility model, the safety rope is connected with a safety belt at the two ends, and a rope reel is connected to any end of the safety rope.

[0021] Compared with the prior art, the high-altitude escape slow descending device has the following beneficial effects:

[0022] 1、The meshing transmission of the main gear, the planet wheel and the gear ring, in combination with the rolling part (steel rolling shaft) being thrown out under the action of centrifugal force and colliding and rubbing with the deceleration groove, converts the rotary kinetic energy into intermittent collision energy, and significantly reduces the rotation speed of the main gear.

[0023] The deceleration groove pitch circle is larger than the installation groove pitch circle, the movement stroke of the rolling part after being thrown out is increased, the collision and rubbing time is prolonged, and the deceleration efficiency is improved.

[0024] 2、The environmental adaptability is improved, the rolling part, the driving gear plate and the deceleration disc are made of stainless steel, water and oil corrosion resistance, high temperature resistance (> 500 DEG C), avoiding the traditional friction block water swelling, chemical decomposition or thermal expansion failure; the rolling part, the driving gear plate and the deceleration disc can also be made of carbon steel (such as high carbon tool steel) after heat treatment, the hardness can reach more than 60HRC, the wear resistance is better than that of austenitic stainless steel, the life of the rolling part and the deceleration groove can be prolonged, and the elastic modulus of the carbon steel is higher (about 200GPavs, stainless steel 193GPa), and the anti-deformation ability is stronger.

[0025] 3、The driving gear plate and the deceleration disc are connected by the first and second plate bodies, which prevents external water and oil from invading the friction area, and further guarantees the reliability of the collision and rubbing.

[0026] 4、The safety rope is bidirectionally extended through the planet carrier wire groove and the shell rope outlet hole, one end touches the ground, and the other end is automatically reset to the high point, supporting multiple people to escape continuously, without manual recovery.

[0027] 5、The safety rope is connected with the safety belt at both ends, and is guided by the steel wire limiting wheel, preventing the rope from winding or accidentally falling off, and improving the operation convenience and personnel safety.

[0028] In addition, the detachable shell structure is adopted, the first shell and the second shell are quickly disassembled through bolts / buckles, the internal components are convenient to overhaul or replace, and the maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can obtain other drawings according to the provided drawings without creating creative labor.

[0030] Fig. 1 An exploded view of a high-altitude escape descent device provided by this utility model;

[0031] Fig. 2 A schematic diagram showing the steel roller positioned between the mounting groove and the deceleration groove is provided.

[0032] Fig. 3 The diagram illustrates a high-altitude escape descent device connected to a safety harness and a rope reel. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Because existing high-altitude escape descent devices are highly sensitive to the environment, being susceptible to water, oil, and high temperatures, and prone to failure in complex environments, this utility model provides a high-altitude escape descent device, including a housing. Inside the housing are a main gear 100, planetary gears 200, and a gear ring 300 that mesh and transmit power. (See attached diagram.) Figs. 1-3 The main gear 100 is coaxially fixed with a drive gear disk 101. The drive gear disk 101 is radially provided with multiple mounting slots, and each mounting slot corresponds to a rolling part 400.

[0036] It also includes a speed reduction disk 500, which has a through hole in the middle. The drive gear disk 101 is located in the through hole. The hole wall of the through hole is provided with a plurality of speed reduction grooves 501 in the radial direction. The adjacent speed reduction grooves 501 are connected by a rounded transition. The speed reduction grooves 501 can receive the rolling part 400 that is thrown out of the mounting groove by centrifugal force during rotation. The rolling part 400 is in the area formed by the mounting groove and the speed reduction groove 501, forming a rigid contact while rolling and crawling, thereby reducing the speed of the main gear 100.

[0037] The planet wheel 200 is provided with a wire slot 201 in the circumferential direction of the planet carrier for accommodating the safety rope 600; and the two ends of the safety rope 600 are extended out through the rope outlet holes of the shell.

[0038] The meshing transmission of the main gear, the planet wheel and the gear ring, in combination with the rolling part (steel rolling shaft) being thrown out under the action of centrifugal force and colliding and rubbing with the deceleration groove, converts the rotary kinetic energy into intermittent collision energy, and the rotating speed of the main gear is significantly reduced. Compared with the traditional continuous friction, the heat accumulation is dispersed, the thermal degradation is avoided, the collision resistance is little affected by the environment (water and oil), and the deceleration stability is ensured.

[0039] In the utility model, the "rolling and climbing" refers to the core dynamic process of the movement of the rolling part (steel rolling shaft) in the deceleration groove, and describes the composite motion mode of the rolling and sliding alternately occurring when the rolling shaft is in contact with the deceleration groove after being thrown out of the installation groove under the action of centrifugal force. The physical mechanism can be divided into the following stages:

[0040] Centrifugal throwing stage: when the main gear rotates at high speed, the installation groove on the driving gear plate rotates with it, the rolling shaft is thrown out under the action of centrifugal force, and is separated from the restriction of the installation groove. The movement characteristics are that the rolling shaft moves radially outward along the installation groove and enters the track range of the deceleration groove.

[0041] Rolling contact stage: initial collision, the rolling shaft hits the inner wall of the deceleration groove (the side close to the installation groove) at high speed, at this time, the rolling shaft rolls along the surface of the deceleration groove due to inertia, and is simultaneously acted on by the normal reaction force and friction force of the groove wall. Rolling energy conversion: the rotary kinetic energy (rotation around its own axis) and the translational kinetic energy (motion along the groove wall) of the rolling shaft are partially converted into friction heat, reducing the rotating speed of the main gear.

[0042] Sliding climbing stage: direction change and climbing, since the pitch circle of the deceleration groove is larger than that of the installation groove, the rolling shaft "climbs" upward (or forward) along the arc transition surface of the deceleration groove after the impact. In this process, the contact pressure between the rolling shaft and the groove wall increases, the rolling gradually changes into sliding friction, forming a resistance effect similar to "climbing a slope". Resistance enhancement mechanism: geometric constraint, the arc design of the deceleration groove forces the rolling shaft to deviate from the direction of the centrifugal force, and the gravitational component and the groove wall resistance need to be overcome. Momentum loss, the sliding friction between the rolling shaft and the groove wall further consumes kinetic energy, resulting in a decrease in the rotating speed of the main gear.

[0043] Reset and cycle stage: disengagement and falling back, when the rolling shaft climbs to the top of the deceleration groove, the centrifugal force decreases, and the rolling shaft falls back into the installation groove (or enters the adjacent deceleration groove) under the action of gravity or inertia, waiting for the next throwing out. The rolling shaft periodically "throws out-rolls-climbs-falls back" among multiple deceleration grooves, forming intermittent rigid collision friction, continuously consuming the rotary kinetic energy of the main gear.

[0044] The utility model discloses rigid contact's high -efficient deceleration: " side roll side climbs " process, and the metal of the roller and the deceleration groove directly collide (no buffer material), and instantaneous impact force is big, and deceleration response is fast, and it is not interfered with lubricating medium (water, oil). The rolling stage reduces the heat of continuous friction, and the sliding stage is short and concentrates energy consumption, avoids local high temperature accumulation. The high heat capacity and heat resistance of stainless steel material further alleviate the heat recession problem. The index circle of deceleration groove and arc transition design accurately control the roller movement path, ensure that the collision frequency and resistance are predictable, realize uniform speed slow -down.

[0045] Advantageously, the housing comprises a first housing 701 and a second housing 702 connected detachably, and the second housing 702 is provided with a lifting hole 7021.

[0046] In the embodiment of the utility model, the driving gear disc 101, the deceleration disc 500 and the rolling part 400 are closed connection through the first plate body 801 and the second plate body 802, and the gear shaft of the main gear 100 passes through the first plate body 801 and supports one end, and the other end passes through the driving gear hole in the middle of the second plate body 802, the middle of the gear ring 300, the planet carrier to the second housing 702 in turn.

[0047] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, in the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0048] In the utility model, the index circle where the deceleration groove 501 is located is greater than the index circle where the mounting groove is located, so as to increase the movement stroke after the rolling part is thrown out, prolong the collision friction time, and improve the deceleration efficiency.

[0049] Advantageously, the rolling part 400 is a steel roller structure.

[0050] More advantageously, the roller structure, the driving gear disc 101 and the deceleration disc 500 are all made of stainless steel or carbon steel.

[0051] In the utility model, the housing is provided with a steel wire limiting wheel 601 corresponding to the rope hole.

[0052] Referring to the accompanying drawings Fig. 3 The safety rope 600 is connected with a safety belt 603 at both ends, and a rope disc 602 is connected to any end of the safety rope 600.

[0053] The utility model assembly process is:

[0054] Steel roller 400 is embedded in the radial installation slot of driving gear disc 101, and each installation slot corresponds to a roller.

[0055] Main gear 100 is engaged with planetary gear 200 and embedded in the inner ring of ring gear 300. The gear shaft of main gear passes through first plate body 801 at one end and sequentially passes through driving gear hole in the middle of second plate body 802, the middle of ring gear 300, planet carrier to the second shell 702 at the other end, and is fixed by bearing to ensure smooth rotation.

[0056] Then, driving gear disc, reduction disc and roller are closed by first plate body 801 and second plate body 802, and are fastened by bolts to form a dustproof and waterproof sealed cavity.

[0057] First shell 701 and second shell 702 are connected by flange, and lifting hole 7021 is arranged at the top of second shell for suspending the slow descender. Steel wire limiting wheel 601 is arranged at the rope outlet hole of the shell to ensure smooth sliding of safety rope 600 and prevent it from falling out.

[0058] Safety rope passes through planet carrier wire slot 201 and shell rope outlet hole at both ends, and adjustable safety belt 603 is connected at each end, and the length of the rope is controlled by rope disc 602.

[0059] In the utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through intermediate medium; for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0060] In use, the trigger stage: the user tightens safety belt 603, and gravity drives planet carrier to rotate planetary gear 200, which drives ring gear and driving gear to rotate, and driving gear drives driving gear disc 101 to rotate at high speed (relative to low speed).

[0061] Collision deceleration stage: steel roller 400 is thrown out of the installation slot under the action of centrifugal force, hits the inner wall of reduction groove 501, and forms rigid collision friction by rolling and climbing. Kinetic energy is converted into heat energy through multiple collisions, and the rotating speed of main gear is gradually reduced to realize slow descent.

[0062] Reset stage: when one end of the safety rope touches the ground, the other end automatically rises to the high point, and the next user can directly use it without manual intervention.

[0063] In the embodiment of the utility model, key parameters and material selection, the roller, driving gear disc and deceleration disc all adopt 304 stainless steel, surface nitriding treatment, hardness is more than or equal to 60HRC, resistant to high temperature, corrosion resistant. It can also adopt carbon steel after heat treatment.

[0064] The diameter ratio of the deceleration groove pitch circle to the installation groove pitch circle is 10%-15% larger, which ensures that the roller fully contacts the inner wall of the deceleration groove after being thrown out.

[0065] Example effect verification

[0066] High temperature test: continuously running for 30 minutes at 300 DEG C environment, steel roller and deceleration groove have no deformation, and the deceleration stability error is less than 5%.

[0067] Waterproof test:

[0068] After being immersed in water for 24 hours, the slow descent speed fluctuation range is less than or equal to 1.2 m / s, which is much better than the traditional friction block (fluctuation is greater than 5 m / s).

[0069] Multi-person escape simulation: 10 people use the safety rope continuously, the average interval time is less than or equal to 10 seconds, and the rope is not stuck or worn out and broken.

[0070] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification.

[0071] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model, and those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the utility model.

Claims

1. A high-altitude escape slow descent device, comprising a shell, the shell having a main gear (100), a planetary gear (200) and a gear ring (300) which are in meshing transmission with each other inside the shell; characterized in that, a driving gear disc (101) is coaxially fixed on the main gear (100), the driving gear disc (101) is provided with a plurality of mounting grooves in the radial direction, and each mounting groove one-to-one accommodates a rolling part (400); a speed reduction disc (500) is further included, the speed reduction disc (500) has a through hole in the middle, the driving gear disc (101) is in the through hole, a plurality of speed reduction grooves (501) are radially arranged on the hole wall of the through hole, adjacent speed reduction grooves (501) are circularly arc transitioned, the speed reduction grooves (501) can receive the rolling part (400) thrown out of the mounting groove by centrifugal force in the rotating process, the rolling part (400) is in rigid contact by rolling and climbing in the area formed by the mounting groove and the speed reduction groove (501), so as to reduce the speed of the main gear (100); wherein, the planetary carrier of the planetary gear (200) is provided with a wire groove (201) accommodating a safety rope (600) in the circumferential direction; both ends of the safety rope (600) are stretched out through the rope outlet hole of the shell.

2. The high-rise escape slow descent device according to claim 1, wherein, The shell comprises a first shell (701) and a second shell (702) which are detachably connected, and the second shell (702) is provided with a lifting hole (7021).

3. A high-rise escape and slow descent device according to claim 2, wherein The driving gear disc (101), the speed reduction disc (500) and the rolling part (400) are closed and connected by a first plate body (801) and a second plate body (802), one end of the gear shaft of the main gear (100) is supported through the first plate body (801), and the other end sequentially passes through the driving gear hole in the middle of the second plate body (802), the middle of the gear ring (300), the planetary carrier and the second shell (702).

4. The high-rise escape slow descent device according to claim 1, wherein, The pitch circle of the speed reduction groove (501) is larger than the pitch circle of the mounting groove.

5. A descent control device according to any one of claims 1 to 4, wherein, The rolling part (400) is a steel roller structure.

6. A high-rise escape and slow descent device according to claim 5, wherein The roller structure, the driving gear disc (101) and the speed reduction disc (500) are all made of carbon steel or stainless steel.

7. A descent control device according to any one of claims 1 to 4, wherein, The shell is provided with a steel wire limiting wheel (601) corresponding to the rope outlet hole.

8. A descent control device according to any one of claims 1 to 4, wherein, Both ends of the safety rope (600) are connected with a safety belt (603), and a rope reel (602) is connected to any end of the safety rope (600).

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