CN214129958U - Hydraulic descent control device for impeller - Google Patents

Abstract

The utility model provides an impeller hydraulic descent control device, which comprises a descent control box, wherein an impeller box, a winding wheel and a gear set are arranged in the descent control box, the impeller box is connected with the winding wire wheel through a gear set, the impeller box comprises a box body, a buffer ring, an impeller, hydraulic oil and an impeller shaft, more than one impeller blade is arranged on the impeller, the buffer ring is provided with buffer blocks corresponding to the impeller blades, in the structure, as the impeller blades and the buffer block are correspondingly arranged, certain friction is generated between the buffer block and the impeller blades, the action of the hydraulic oil can ensure that strong friction is not generated between the impeller blades and the buffer block, so that the friction speed is stable when the impeller blades contact the buffer block every time, and the friction relation has the effect of reducing the speed of the buffer, therefore, the descent control device cannot be suddenly stopped in the falling process and cannot cause the falling speed to be too high.

Description

Hydraulic descent control device for impeller

Technical Field

The utility model relates to an emergency escape equipment technical field, concretely relates to impeller hydraulic pressure ware slowly falls.

Background

At present, in cities, high-rise and super high-rise buildings are more and more, once disasters such as fire disasters, earthquakes and the like occur, people are trapped in a room by big fire and can not escape, and then people can only wait for the fire fighters to rescue before, so that the life safety of trapped people is greatly threatened, and aiming at the problems, people develop a plurality of escape tools, and high-altitude devices in the prior art are many, but have the following problems: 1. the structure is complex, the volume is heavy, the manufacturing cost is high, and the popularization and the use are difficult; 2. the operation is difficult, and the trapped personnel are difficult to operate under the emergency condition of disaster; 3. the escape device does not have an automatic return function, namely has a return function, and also needs a person trapped at a high place to operate to return to a high place, so that the escape device cannot be suitable for use under the condition that a plurality of people need to escape; 4. the installation is complicated, and the structural requirement on the use site is higher.

The patent document with the Chinese patent application number of 201620222270.1 and the publication date of 2016.12.07 discloses a high-altitude escape device, which mainly comprises a descent control device, a lifesaving rope and a fixing device, wherein the descent control device comprises a stator impeller, a rotor impeller, a shell and a shaft, the stator impeller and the rotor impeller are of disc structures which are oppositely arranged and can relatively rotate, and are respectively provided with front inclined blades on two opposite surfaces, the stator impeller and the shell are fixedly and hermetically connected to form a closed space which is internally filled with oil, the rotor impeller is arranged in the closed space and can rotate relative to the stator impeller and the shell through the shaft, one end of the lifesaving rope is connected to the shaft, and the other end of the lifesaving rope is connected with a user or lifesaving equipment. The whole device is simple in structure, safe, firm, convenient to operate and wide in application range.

However, in the device, the speed reduction is realized by the reaction force between the stator impeller and the liquid and the reaction force between the rotor impeller and the liquid, and the function can be realized only by matching the two impellers, so that the device is difficult to process and is difficult to disassemble when the device is in failure and needs to be maintained.

Disclosure of Invention

An object of the utility model is to provide an impeller hydraulic pressure ware that slowly falls adopts the cooperation of impeller and buffering ring sum hydraulic oil, thereby realizes buffering speed reduction at the rotatory in-process of impeller through buffering ring restriction impeller pivoted speed and reaches the effect that slowly falls, maintains simply and processing is convenient, operates simply.

For reaching above-mentioned purpose, an impeller hydraulic pressure ware that slowly falls, including slowly falling the case slowly fall the incasement and be equipped with impeller box, winding reel and gear train, be connected through the gear train between impeller box and the winding reel, the impeller box includes box, buffering ring, impeller, hydraulic oil and impeller shaft, the box is fixed and slowly falls the incasement, is equipped with the buffering ring at the inner wall of box, the impeller sets up at the buffering intra-annular and through impeller shaft connecting box, and the one end of impeller shaft stretches out outside the box and links to each other with the gear train, be equipped with more than one impeller blade on the impeller, be equipped with the buffer block corresponding with the impeller blade on the buffering ring, it has hydraulic oil to fill between impeller and buffering ring.

The impeller hydraulic descent control device with the structure drives the gear set to rotate through the rotation of the winding wire wheel, further drives the impeller shaft to rotate, thereby driving the impeller to rotate, the impeller blade contacts the buffer block when rotating, the hydraulic oil is used as buffer liquid and can play a role of lubricating and cooling, so that the impeller blade can not generate overhigh heat due to friction when contacting the buffer block, thereby damaging the structures of the impeller blade and the buffer block, the impeller blade rotates to the buffer block every time, as the impeller blade and the buffer block are correspondingly arranged, certain friction is generated between the buffer block and the impeller blade, and strong friction can not be generated between the impeller blade and the buffer block due to the action of the hydraulic oil, so that the friction speed of the impeller blade contacting the buffer block every time is stable, and the buffer deceleration effect exists due to the friction relation, therefore, the descent control device can not suddenly stop and can not cause too high falling speed in the falling process, and this structure is because the impeller shaft stretches out outside the box, and realizes rotating with the gear train through the impeller shaft and be connected, when the gear train damages, only need open slowly fall the box can, need not to dismantle the impeller case, simple structure, and maintain simple, convenient operation.

Further, evenly be provided with more than one impeller blade on the impeller along the impeller circumferencial direction, evenly be provided with more than one buffer block along buffer ring circumferencial direction on the buffer ring, buffer ring and impeller set up with one heart, above setting, through evenly set up more than one impeller blade on the impeller, and the last correspondence of buffer ring is provided with the buffer block, and both set up with one heart, thereby hydraulic oil just can play lubricated refrigerated effect and make the impeller blade can not produce the too high structure of destroying impeller blade and buffer block because of the friction when contacting the buffer block as buffer liquid in addition, thereby further improve stability.

Further, the winding reel includes winding wheel axle, first winding wheel, second winding wheel and line wheel, first winding wheel and second winding wheel pass through the line wheel and connect, and the winding wheel axle passes first winding wheel and second winding wheel, slowly fall case, other end connecting gear group are connected to the one end of winding wheel axle, through the setting of winding reel, when using, will slowly fall the rope winding on the winding reel, when descending, ask for the student to rely on slowly to fall the ware whereabouts, and the winding line wheel drives gear group and rotates, follows the gear group at the impeller case of the gear group other end and rotates, and the slew velocity that drags the winding reel through the effect of impeller and cushion ring is in order to realize slowly descending.

Furthermore, one side of the first winding wheel and the second winding wheel, which is close to the reel, is provided with an involute bulge which extends outwards along the involute of the reel from the center of the first winding wheel and the second winding wheel, the reel is provided with a slow descending rope, the tangential direction of the intersection of the involute bulge and the slow descending rope is perpendicular to the tangential direction of the intersection of the involute bulge and the slow descending rope of the slow descending rope, so that the setting is realized, the involute bulge is arranged on one side of the first winding wheel and the second winding wheel, which is close to the reel, so that the slow descending rope can be in surface contact with the involute bulge when in motion, the problem of over-fast sliding caused by point contact is prevented, meanwhile, because the involute bulge is arranged along the involute direction of the reel, the direction disengaging force of the reel is generated when the reel is in motion, and because the involute bulge is arranged along the involute direction of the reel, and the tangent direction of the involute bulge at the intersection of the involute bulge and the slow descending rope is perpendicular to the tangent direction of the slow descending rope at the intersection of the involute bulge and the slow descending rope, so that in the motion process, the slow descending rope and the involute bulge which is in contact with the involute bulge can generate a force in the direction opposite to the breaking force for the slow descending rope, the slow descending rope is prevented from breaking away from the reel, and the structure stability is good.

Furthermore, the gear set comprises a winding gear, a transmission gear, an impeller box gear and a transmission shaft, the winding gear is arranged on a winding wheel shaft, the impeller box gear is arranged on the impeller shaft, the transmission gear is arranged between the winding gear and the impeller box gear and is in meshed connection with the winding gear and the impeller box gear, the transmission gear is connected with the descent control box through the transmission shaft, and the gear can be prevented from slipping in the falling process under the effect of meshing transmission of the gears, so that the safety of survival personnel is guaranteed.

Furthermore, the slowly-falling box is equipped with the guiding hole on being located the upper and lower both sides face of winding reel one end, is located to be equipped with the leading wheel on the guiding hole, slowly falls the rope setting between leading wheel and winding reel, through the effect of leading wheel, can not take place slowly when slowly falling the rope winding on winding reel and fall the phenomenon that the rope coincidence twined together.

Further, the impeller shaft is equipped with the impeller connecting axle with impeller box gear connection's one end, be connected with two impeller connecting strips on the impeller connecting axle, the center of two impeller connecting strips link to each other and form the center that cross and center are in the impeller connecting axle be equipped with the cross impeller spread groove corresponding with the impeller connecting strip on the impeller box gear, set up from this, the cross connected mode is more firm than circular connection to guarantee that impeller shaft and impeller box gear can not take place the phenomenon of skidding when rotating.

Furthermore, one end of the transmission shaft connected with the transmission gear is provided with a transmission connecting shaft, the transmission connecting shaft is connected with two transmission connecting strips, the centers of the two transmission connecting strips are connected to form a cross shape, and the centers are positioned at the center of the transmission connecting shaft, the transmission gear is provided with a cross-shaped transmission connecting groove corresponding to the transmission connecting strip, one end of the winding wheel shaft connected with the winding gear is provided with a winding connecting shaft, the winding connecting shaft is connected with two winding connecting strips, the centers of the two winding connecting strips are connected to form a cross shape, and the center is positioned at the center of the winding connecting shaft, the winding gear is provided with a cross-shaped winding connecting groove corresponding to the winding connecting strip, so that the cross-shaped connecting mode is more firm than the round connection mode, and the phenomenon of slipping of the winding wheel shaft and the winding gear can not occur when the winding wheel shaft and the winding gear rotate.

Further, the tangential direction slope setting of buffer block and buffer ring junction, and more than one buffer block slope direction is the same, because the buffer block sets up with buffer ring slope relatively for when buffer block and impeller blade contacted, give the certain guide effect of impeller blade, also can not be died by the buffer block card, structural stability is better.

Furthermore, the distance from the end surface of the impeller blade to the center of the buffer ring is greater than the distance from the top surface of the buffer ring to the center of the buffer ring, and the length of the buffer block is smaller than that of the impeller blade, so that the length of the impeller blade is not influenced, and the rotating effect of the impeller blade is not influenced.

Drawings

Fig. 1 is a sectional view of the impeller hydraulic descent control device of the present invention.

Fig. 2 is a schematic perspective view of the utility model with the descent control box removed.

Fig. 3 is an exploded view of the impeller case of the present invention.

Fig. 4 is a perspective view of the present invention with another view angle of the descent control box removed.

Fig. 5 is a cross-sectional view of the impeller blade rotating to the bumper according to the present invention.

Fig. 6 is a perspective view of the present invention.

Fig. 7 is an exploded view of the gear assembly of the present invention.

Fig. 8 is an enlarged view of a portion a in fig. 5.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 8, the hydraulic descent control device comprises a descent control box 1, wherein an impeller box 2, a winding wire wheel 3 and a gear set 4 are arranged in the descent control box 1.

As shown in fig. 1 and 3, the impeller case 2 is connected with the winding wire wheel 3 through a gear set 4, the impeller case 2 includes a case body 21, a buffer ring 22, an impeller 23, hydraulic oil (not shown in the figure) and an impeller shaft 25, the case body 21 is fixed in the descent control case 1, the buffer ring 22 is disposed on the inner wall of the case body 21, the impeller 23 is disposed in the buffer ring 22 and connected with the case body 21 through the impeller shaft 25, one end of the impeller shaft 25 extends out of the case body 21 and is connected with the gear set 4, more than one impeller blade 231 is disposed on the impeller 23, a buffer block 221 corresponding to the impeller blade 231 is disposed on the buffer ring 22, and hydraulic oil is filled between the impeller 23 and the buffer ring 22.

As shown in fig. 1, the impeller 23 is uniformly provided with more than one impeller blade 231 along the circumferential direction of the impeller 23, the buffer ring 22 is uniformly provided with more than one buffer block 221 along the circumferential direction of the buffer ring 22, the buffer ring 22 and the impeller 23 are concentrically arranged, the impeller blades 231 are uniformly arranged on the impeller 23, the buffer block 221 is correspondingly arranged on the buffer ring 22, and the buffer ring 22 and the buffer block 221 are concentrically arranged, so that hydraulic oil is used as buffer liquid and can play a role in lubricating and cooling, so that the impeller blades 231 cannot generate too high heat due to friction when contacting the buffer block 221, thereby damaging the structures of the impeller blades 231 and the buffer block 221, and the stability is further improved.

As shown in fig. 4, the winding reel 3 includes a winding wheel shaft 31, a first winding wheel 32, a second winding wheel 33 and a reel 34, the first winding wheel 32 and the second winding wheel 33 are connected by the reel 34, the winding wheel shaft 31 passes through the first winding wheel 32 and the second winding wheel 33, one end of the winding wheel shaft 31 is connected with the descent control box 1, the other end is connected with the gear set 4, by the arrangement of the winding reel 3, when in use, a descent control rope is wound on the winding reel 3, when descending, a survival worker falls down by means of the descent control device, the winding wheel 3 drives the gear set 4 to rotate, the impeller box 2 at the other end of the gear set 4 rotates along with the gear set 4, and the rotation speed of the winding reel 3 is controlled by the action of the impeller 23 and the cushion ring 22 to realize the descent control.

As shown in fig. 4 and 5, the side of the first winding wheel 32 and the second winding wheel 33 close to the reel 34 is provided with an involute protrusion 35 extending outwards along the involute of the reel from the center of the first winding wheel 32 and the second winding wheel 33, and the reel 34 is provided with a descent control rope 13;

as shown in fig. 8, a tangential direction S of the involute protrusion 35 at the intersection of the involute protrusion 35 and the descent control rope 13 is perpendicular to a tangential direction L of the descent control rope at the intersection of the involute protrusion and the descent control rope.

In this embodiment, the calculation formula of the involute projection position is as follows:

x=r*cos(t)+r*t*sin(t)

y=r*sin(t)-r*t*cos(t)

wherein the angle of t is: t is more than or equal to 0 degree and less than or equal to 360 degrees

In the formula, (x, y) is the coordinate of one point on the involute convex tooth, r is the radius of the reel, and t is the angle of the involute. According to the arrangement, the involute bulge 35 is arranged on one side of the first winding wheel 32 and the second winding wheel 33 close to the reel 34, so that the slow descending rope 13 can be in surface contact with the involute bulge 35 when in motion, the problem of excessive sliding caused by point contact is prevented, meanwhile, the involute bulge 35 is arranged along the involute direction of the reel 34, so that the direction of the pre-separation reel, generated when in motion, of the reel 34 is separated from a force F, the involute bulge 35 is arranged along the involute direction of the reel 34, the tangential direction S of the involute bulge 35 at the intersection of the involute bulge 35 and the slow descending rope 13 is vertical to the tangential direction L of the slow descending rope at the intersection of the involute bulge and the slow descending rope, so that the involute bulge 35, in contact with the involute bulge 35, of the slow descending rope 13 and the involute bulge 35 can generate a force F' opposite to the separation force F for the slow descending rope 13 in the motion process, thereby preventing the slow descending rope 13 from being separated from the wire wheel 34 and having good structural stability.

As shown in fig. 2 and 7, the gear set 4 includes a winding gear 41, a transmission gear 42, an impeller casing gear 43 and a transmission shaft 44, the winding gear 41 is disposed on the winding wheel shaft 31, the impeller casing gear 43 is disposed on the impeller shaft 25, the transmission gear 42 is disposed between the winding gear 41 and the impeller casing gear 43 and is engaged with the winding gear 41 and the impeller casing gear 43, the transmission gear 42 is connected to the descent control casing 1 through the transmission shaft 44, and the gear does not slip during the descent process through the action of gear engagement transmission, so as to ensure the safety of the survival staff.

As shown in fig. 1 and 8, the descent control box 1 is provided with guide holes 11 on the upper and lower sides of one end of the winding reel 3, guide wheels 12 are provided on the guide holes 11, the guide wheels 12 are fixed on the descent control box 1 through guide wheel posts 121, the descent control rope 13 is provided between the guide wheels 12 and the winding reel 3, and the phenomenon that the descent control rope 13 is overlapped and wound together when the descent control rope 13 is wound on the winding reel 3 is not generated through the action of the guide wheels 12.

As shown in fig. 7, an impeller connecting shaft 251 is arranged at one end of the impeller shaft 25 connected with the impeller box gear 43, two impeller connecting strips 252 are connected to the impeller connecting shaft 251, the centers of the two impeller connecting strips 252 are connected to form a cross shape, and the center of the two impeller connecting strips is located at the center of the impeller connecting shaft 251, and a cross-shaped impeller connecting groove 431 corresponding to the impeller connecting strip 252 is arranged on the impeller box gear 43, so that the cross-shaped connecting mode is more firm than the circular connecting mode, and the impeller shaft 25 and the impeller box gear 43 are ensured not to slip when rotating.

As shown in fig. 7, the one end that transmission shaft 44 is connected with drive gear 42 is equipped with transmission connecting axle 441, be connected with two transmission connecting strips 442 on the transmission connecting axle 441, the center of two transmission connecting strips 442 link to each other and form the cross and the center is in the center of transmission connecting axle 441 drive gear 42 is last to be equipped with the cross transmission spread groove 421 corresponding with transmission connecting strip 442, sets up from this, and the cross connected mode is more fastened than circular connection to guarantee that transmission shaft 44 and drive gear 42 can not take place the phenomenon of skidding when rotating.

As shown in fig. 7, one end of the winding wheel shaft 31 connected to the winding gear 41 is provided with a winding connecting shaft 311, the winding connecting shaft 311 is connected to two winding connecting strips 312, the centers of the two winding connecting strips 312 are connected to form a cross shape, and the center of the two winding connecting strips is located at the center of the winding connecting shaft 311, the winding gear 41 is provided with a cross-shaped winding connecting slot 411 corresponding to the winding connecting strips 312, so that the cross-shaped connecting manner is more secure than the circular connecting manner, thereby ensuring that the winding wheel shaft 31 and the winding gear 41 do not slip when rotating.

As shown in fig. 1 and 5, the tangential direction of the connection between the buffer block 221 and the buffer ring 22 is inclined, and the inclination direction of at least one buffer block 221 is the same, because the buffer block 221 is inclined relative to the buffer ring 22, when the buffer block 221 contacts with the impeller blade 231, the buffer block 221 can guide the impeller blade 231, and cannot be blocked by the buffer block 221, so that the structural stability is better.

As shown in fig. 1 and 5, the distance from the end surface of the impeller blade 231 to the center of the buffer ring 22 is greater than the distance from the top surface of the buffer ring 22 to the center of the buffer ring 22, and the length of the buffer block 221 is less than the length of the impeller blade 231, so that the length of the impeller blade 231 is not affected and the rotation effect of the impeller blade 231 is not affected.

The hydraulic slow descending device with the impeller with the structure comprises a slow descending rope 13, a guide hole 11 formed in the top end of the slow descending device is penetrated into the guide hole 11, the slow descending rope 13 is wound on a winding reel 3 and penetrates out of the guide hole 11 in the bottom end of the slow descending device to complete installation of the slow descending rope 13, when slow descending is needed, a survival worker depends on the slow descending device to fall down, the slow descending rope 13 drives the winding reel 3 to rotate, a gear set 4 rotates sequentially to drive an impeller box 2 to rotate, the rotating speed of the winding reel 3 is controlled through the action of impeller blades 231 and a buffer block 221 to realize slow descending, the gear set 4 rotates through rotation of the winding reel 3 to drive an impeller shaft 25 to rotate, so as to drive an impeller 23 to rotate, the impeller blades 231 contact with the buffer block 221 when rotating (as shown in figure 5), hydraulic oil is used as buffer liquid and can play a lubricating and cooling role, so that the impeller blades 231 cannot generate too high heat due to friction when contacting with the buffer block 221 to damage the impeller blades 231 and the buffer block 221 The structure of (1), when impeller blade 231 rotates to buffer block 221 each time (as shown in fig. 5), because impeller blade 231 and buffer block 221 are correspondingly arranged, thereby certain friction is generated between buffer block 221 and impeller blade 231, and strong friction is not generated between impeller blade 231 and buffer block 221 under the action of hydraulic oil, so that the friction speed of impeller blade 231 when contacting buffer block 221 each time is stable, just because the friction relation has the effect of buffering and decelerating, therefore, the descent control device cannot suddenly stop and cannot cause too fast falling speed in the falling process, and the structure is realized by that impeller shaft 25 extends out of box body 21, and is rotatably connected with gear set 4 through impeller shaft 25, when gear set 4 is damaged, only descent control box 1 needs to be opened, impeller box 2 does not need to be detached, the structure is simple, maintenance is simple, and operation is convenient.

Claims (8)

1. The utility model provides an impeller hydraulic pressure ware that slowly falls, includes slowly falls the case, its characterized in that: the slow descending box is internally provided with an impeller box, a winding reel and a gear set, the impeller box is connected with the winding reel through the gear set, the impeller box comprises a box body, a buffer ring, an impeller, hydraulic oil and an impeller shaft, the box body is fixed in the slow descending box, the inner wall of the box body is provided with the buffer ring, the impeller is arranged in the buffer ring and connected with the box body through the impeller shaft, one end of the impeller shaft extends out of the box body and is connected with the gear set, the impeller is provided with more than one impeller blade, the buffer ring is provided with a buffer block corresponding to the impeller blade, and the hydraulic oil is filled between the impeller and the buffer ring; more than one impeller blade is uniformly arranged on the impeller along the circumferential direction of the impeller, more than one buffer block is uniformly arranged on the buffer ring along the circumferential direction of the buffer ring, and the buffer ring and the impeller are concentrically arranged; the distance between the end surface of the impeller blade and the center of the buffer ring is larger than the distance between the top surface of the buffer ring and the center of the buffer ring.

2. The hydraulic descent control device with impellers as claimed in claim 1, wherein: the winding reel comprises a winding reel shaft, a first winding wheel, a second winding wheel and a reel, the first winding wheel is connected with the second winding wheel through the reel shaft, the winding reel shaft penetrates through the first winding wheel and the second winding wheel, one end of the winding reel shaft is connected with the descent control box, and the other end of the winding reel shaft is connected with the gear set.

3. The hydraulic descent control device with impellers as claimed in claim 2, wherein: the one side that first winding wheel and second winding wheel are close to the line wheel is equipped with outwards along the line wheel that gradually bursts at the seams of the center of first winding wheel and second winding wheel and extends gradually the arch of gradually bursting at the seams, is equipped with slowly falling the rope on the line wheel, and the arch of gradually bursting at the seams is protruding to be perpendicular with slowly falling the tangential direction of rope in the intersection of the arch of gradually bursting at the seams and slowly falling the rope.

4. The hydraulic descent control device with impellers as claimed in claim 2, wherein: the gear set comprises a winding gear, a transmission gear, an impeller box gear and a transmission shaft, the winding gear is arranged on a winding wheel shaft, the impeller box gear is arranged on an impeller shaft, the transmission gear is arranged between the winding gear and the impeller box gear and is in meshed connection with the winding gear and the impeller box gear, and the transmission gear is connected with the descent control box through the transmission shaft.

5. The hydraulic descent control device with impellers as claimed in claim 2, wherein: the slow descending box is provided with guide holes on the upper side and the lower side of one end of the winding wheel, guide wheels are arranged on the guide holes, and a slow descending rope is arranged between the guide wheels and the winding wheel.

6. The hydraulic descent control device with impeller according to claim 4, wherein: the impeller box is characterized in that an impeller connecting shaft is arranged at one end, connected with an impeller connecting rod, of the impeller shaft and an impeller box gear, the centers of the two impeller connecting rods are connected to form a cross shape, the center of the cross shape is located at the center of the impeller connecting shaft, and a cross-shaped impeller connecting groove corresponding to the impeller connecting rod is formed in the impeller box gear.

7. The hydraulic descent control device with impeller according to claim 4, wherein: a transmission connecting shaft is arranged at one end of the transmission shaft connected with the transmission gear, two transmission connecting strips are connected to the transmission connecting shaft, the centers of the two transmission connecting strips are connected to form a cross shape, the center of the two transmission connecting strips is positioned at the center of the transmission connecting shaft, and a cross-shaped transmission connecting groove corresponding to the transmission connecting strips is arranged on the transmission gear; the winding wheel shaft is connected with a winding gear, a winding connecting shaft is arranged at one end of the winding wheel shaft, two winding connecting strips are connected to the winding connecting shaft, the centers of the two winding connecting strips are connected to form a cross shape, the center of the two winding connecting strips is located at the center of the winding connecting shaft, and a cross-shaped winding connecting groove corresponding to the winding connecting strips is formed in the winding gear.

8. The hydraulic descent control device with impellers as claimed in claim 1, wherein: the tangential direction of the junction of the buffer block and the buffer ring is obliquely arranged, and the oblique direction of more than one buffer block is the same.

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