CN115300816A - Slow descending device - Google Patents

Abstract

The invention discloses a slow descending device. Slowly fall the device and break away from the subassembly including slowly falling the device body and gravity, slowly fall the device body and have the speed reduction and slowly fall subassembly and grafting chamber, the speed reduction slowly falls the subassembly and is connected with slowly falls the rope, gravity breaks away from the subassembly and pegs graft in grafting chamber, gravity breaks away from the subassembly and includes the wedge ring, the ball, the elastic component, shutoff ring and round pin axle, the detachable operation personnel of connecting of round pin axle, round pin axle is located to wedge ring and shutoff ring cover, shutoff ring fixed mounting is in grafting chamber, the one end butt of elastic component in the shutoff ring, other end butt in the wedge ring, the inclined plane butt ball of wedge ring, the epaxial recess that has of round pin, a part of ball is located the recess. Through setting up gravity and breaking away from the subassembly, both make operating personnel or rescue personnel can descend through the separation connection, and gravity breaks away from the subassembly and can fall automatic breaking away from under the effect of impact force at the high altitude for operating personnel also can descend slowly through slowly falling the rope automatically in unconscious or the unable condition after falling.

Description

Slow descending device

Technical Field

The invention relates to the technical field of high-altitude operation, in particular to a slow descending device.

Background

With the increasing of the scale of distribution lines, the requirement of users on power supply reliability is higher and higher, the proportion of the operation mode of distribution network uninterrupted operation in the existing power grid operation is increased gradually, the workload and the working difficulty are increased continuously, and the risks such as electric shock, high-temperature heatstroke, physical stamina overdraft, mechanical accidents and sudden diseases in the operation process are increased. Under current tower operation condition of stepping on, the operation personnel rely on climbing devices such as foot nail to climb to the top of the tower, if meet proruption situation at the high altitude, also need rely on climbing device to climb down the shaft tower, when handling high altitude proruption situation, lack the technological means that can shift the operation personnel to the secure environment fast.

On the other hand, the existing anti-falling safety protection device for high-altitude operation is generally a safety belt, when an operator falls from high altitude, the operator is suspended in the air by the safety belt, and at the moment, the operator needs to be unfolded by other personnel for rescue, the rescue difficulty in the air is high, and the requirement on the skill of the rescue personnel is high. Particularly, when the operating personnel are in unconscious or incapacitated danger, the rescue difficulty is very high, the consumed time is very long, and the optimal treatment time is very easily delayed.

Disclosure of Invention

The invention aims to provide a slow descending device which can quickly transfer a high-altitude operator to a safe environment and can conveniently rescue unconscious or incapacitated operator.

In order to achieve the purpose, the invention adopts the following technical scheme:

slowly fall device includes: the slow descending device comprises a slow descending device body, wherein the slow descending device body is provided with a slow descending component and an inserting cavity, the slow descending component is connected with a slow descending rope, and the slow descending rope is tied to an operator; the gravity separation component is inserted into the insertion cavity and comprises a wedge-shaped ring, a ball, an elastic piece, a plugging ring and a pin shaft, the pin shaft is detachably connected with the operating personnel, the wedge-shaped ring and the plugging ring are sleeved on the pin shaft, the plugging ring is fixedly installed in the insertion cavity, one end of the elastic piece abuts against the plugging ring, the other end of the elastic piece abuts against the wedge-shaped ring, the inclined surface of the wedge-shaped ring abuts against the ball, the pin shaft is provided with a groove, and a part of the ball is located in the groove; the gravity disengaging assembly is configured such that when the pin shaft is subjected to a high-altitude falling impact force, the pin shaft starts to disengage from the plugging cavity, the balls move in a direction of disengaging from the groove along the inclined surface of the wedge ring and press the elastic member, and after the balls disengage from the groove, the pin shaft can disengage from the plugging cavity, and the operator can slowly descend through the slow descending rope.

Optionally, the wedge ring includes a first wedge ring and a second wedge ring, the ball is clamped between the first wedge ring and the second wedge ring, and the first wedge ring, the ball, and the second wedge ring abut between an inner wall of the socket cavity and the elastic member.

Optionally, one end of the pin shaft is provided with a pull ring, the pull ring is located outside the insertion cavity, the operator is connected with a safety belt, and the safety belt is detachably connected to the pull ring.

Optionally, the plugging ring is adjustably sleeved on the pin shaft, and one end of the elastic member, which is fixed in a limiting manner, abuts against the plugging ring.

Optionally, the blocking ring is screwed to the pin shaft.

Optionally, the blocking ring is in interference fit with the pin shaft.

Optionally, the slow-down slow-descending assembly comprises a centrifugal wheel and a slow-descending wheel, the slow-descending device body is provided with a slow-down rotation cavity, the centrifugal wheel is rotatably arranged in the slow-down rotation cavity and comprises a centrifugal block and a centrifugal shaft, the centrifugal shaft is rotatably arranged in the slow-down rotation cavity, the slow-descending rope is wound on the slow-descending wheel and drives the slow-descending wheel to rotate, the slow-descending wheel is in transmission connection with the centrifugal shaft, and the centrifugal block is in transmission connection with the centrifugal shaft and can be in sliding friction with the inner wall of the slow-down rotation cavity.

Optionally, a sliding limiting cavity is disposed on an outer circumferential surface of the centrifugal shaft, the centrifugal block is slidably disposed in the sliding limiting cavity and abuts against a sidewall of the sliding limiting cavity, the sliding limiting cavity has an opening along a radial direction of the centrifugal wheel, and the centrifugal block can slide outside the sliding limiting cavity through the opening.

Optionally, a sliding limiting shaft is disposed on an outer circumferential surface of the centrifugal shaft, the centrifugal block is slidably disposed on the sliding limiting shaft, the sliding limiting shaft is disposed along a radial direction of the centrifugal wheel, and the centrifugal block can slide along the sliding limiting shaft in a direction away from the centrifugal shaft.

Optionally, the descent control wheel is in transmission connection with a main gear, the main gear is in transmission connection with a transmission gear according to a preset transmission ratio, and the transmission gear is in transmission connection with the centrifugal shaft.

The slow descending device provided by the invention has the beneficial effects that: through setting up the slow-falling device, and set up gravity and break away from the subassembly in the slow-falling device, break away from the subassembly through gravity and hang the operation personnel in predetermineeing the operation height, both make operation personnel or rescue personnel can break away from subassembly and operation personnel separation with gravity fast conveniently, operation personnel just can descend slowly through slowly falling the rope, and when the operation personnel falls, gravity breaks away from the subassembly and can fall the effect of impact power down and break away from automatically in the high altitude, even make the operation personnel be in unconscious or the unable condition also can descend slowly through slowly falling the rope automatically, make things convenient for the operation personnel to obtain the rescue as early as possible.

Drawings

FIG. 1 is a front view of a descent control device provided in the present invention;

FIG. 2 is a side view of a descent control device provided in the present invention;

FIG. 3 is a schematic view of an internal structure of the descent control device provided in the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic side view of a deceleration descent control assembly of the ventilation apparatus provided in the present invention;

fig. 6 is a schematic front view of a deceleration descent control assembly in the ventilation apparatus provided in the present invention.

In the figure:

1. a slow descending device body; 11. a decelerating rotary cavity; 12. a plug-in cavity;

2. a gravity disengaging assembly; 21. a ball bearing; 22. a wedge ring; 221. a first wedge ring; 222. a second wedge ring; 23. a pin shaft; 24. an elastic member; 25. a plugging ring; 26. a pull ring; 261. a bolt;

3. a deceleration slow-descending assembly; 31. a centrifugal wheel; 311. a sliding limit cavity; 312. a centrifugal shaft; 313. a centrifugal block; 32. a connecting spring; 33. slowly descending the wheel; 34. a main gear; 35. a transmission gear;

4. a suspension rope;

5. a slow descending rope.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and encompass, for example, both fixed and removable connections unless otherwise explicitly stated or limited; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The descent control device provided by the present invention will be described with reference to fig. 1 to 6. The slow descending device is used for guaranteeing high-altitude operation such as power distribution, and operating personnel hang the slow descending device at a preset height to carry out operation. The descent control device provided by the invention is described in a plurality of specific embodiments.

Example one

In the first embodiment, as shown in fig. 1 and fig. 2, the descent control device includes a descent control device body 1 and a gravity disengaging component 2, where the descent control device body 1 has an insertion cavity 12, and the gravity disengaging component 2 is inserted into the insertion cavity 12 in an interference fit manner. The upper end of the slow descending device body 1 is provided with a suspension ring, a suspension rope 4 is arranged in the suspension ring in a penetrating mode, the end portion of the suspension rope 4 is hung at a fixed position hung on a pole tower structure, and the slow descending device and operation personnel can be hung at a preset height through the suspension rope 4. The slow descending device body 1 is further rotatably provided with a slow descending rope 5, two end parts of the slow descending rope 5 are respectively a free end and a connecting end, the free end is not restrained, and the connecting end is connected with an operator, so that the operator can slowly descend. And, slowly fall device body 1 still includes slow descending subassembly 3 that slows down, and slow descending subassembly 3 can restrict the descending speed of slowly falling rope 5 for the operating personnel can descend with safe speed.

More specifically, as shown in fig. 4, the gravity disengaging assembly 2 includes a wedge ring 22, balls 21, an elastic member 24, a blocking ring 25, and a pin 23. The pin shaft 23 is inserted into the insertion cavity 12, a pull ring 26 is arranged at one end of the pin shaft 23, the pull ring 26 is located outside the insertion cavity 12, when an operator works at high altitude, the operator wears a safety belt, and the safety belt is connected with the pull ring 26 and a connecting end of the descent control rope 5, so that the operator is fixed on the gravity separation component 2, and is fixed on the descent control device body 1 through the gravity separation component 2. Alternatively, in this embodiment, the pull ring 26 is fixedly mounted on the pin 23 by a connection member such as a bolt 261. Of course, in some other embodiments, a hook may be connected to one end of the pin 23, and the hook may be detachably connected to a safety belt on the operator, and the connection structure of the pin 23 and the safety belt is not particularly limited in the present invention, as long as the operator can be detachably suspended.

The wedge ring 22 is slidably sleeved on the pin 23, and the section of the wedge ring is wedge-shaped, so that the end surface of one side of the wedge ring 22 is an inclined surface. The pin shaft 23 is fixedly sleeved with the plugging ring 25 in a position-adjustable manner, one end of the elastic piece 24 is limited and abutted against the plugging ring 25, and the other end of the elastic piece is abutted against the wedge-shaped ring 22. The pin 23 has a recess therein which is capable of receiving a portion of the ball 21. When the pin 23 is fixed to the socket cavity 12, a portion of the balls 21 is located in the groove, abuts against the inclined surface of the wedge ring 22, and directly or indirectly abuts against the inner wall surface of the socket cavity 12. Exemplarily, in the present embodiment, as shown in fig. 4, the wedge ring 22 includes a first wedge ring 221 and a second wedge ring 222, the first wedge ring 221 and the second wedge ring 222 are both sleeved on the pin 23, the first wedge ring 221 abuts against an inner wall surface of the plug cavity 12 and is immovable, the second wedge ring 222 is slidably disposed on the pin 23, and the balls 21 are clamped between inclined surfaces of the first wedge ring 221 and the second wedge ring 222. Through setting up first wedge ring 221 and second wedge ring 222, can the easy to assemble ball 21, avoid in the installation because ball 21 easily rolls, lead to unable installation gravity to break away from subassembly 2.

Optionally, in this embodiment, the gravity disengaging assembly 2 includes a plurality of balls 21, an outer circumferential surface of the pin 23 is provided with an arc-shaped groove, the balls 21 are arranged in the arc-shaped groove in groups and are uniformly distributed along the outer circumferential surface of the pin 23, so that the wedge ring 22 is uniformly stressed, and the pin 23 is conveniently disengaged. Of course, in some other embodiments, a plurality of hemispherical grooves (not shown) may be uniformly disposed along the outer circumferential surface of the pin 23, and each groove is used for placing one ball 21, which can also achieve the effect of uniformly pushing the wedge ring 22.

When the pin 23 is impacted by falling from high altitude, the gravity disengaging assembly 2 starts to disengage from the socket cavity 12, at this time, the balls 21 move along the inclined surface of the wedge ring 22 in the direction of disengaging from the groove and press the elastic member 24, the elastic member 24 is subjected to a pressing force capable of resisting the self elastic force, and the balls 21 can completely disengage from the groove after pressing the elastic member 24, so that the pin 23 is no longer subjected to the axial constraint force exerted by the balls 21. After the ball 21 breaks away from the groove, the pin shaft 23 can break away from the inserting cavity 12, and at the moment, the operator is only connected with the slow descending rope 5, so that the operator can slowly descend through the slow descending rope 5 even if the operator is in an unconscious or incapacitated dangerous environment. Of course, it can be understood that the high-altitude falling impact force in the present invention refers to an impact force generated by falling similar to the weight of a human body, the impact force and the magnitude of the elastic force against the impact force are calculated or tested according to actual conditions, and the calculation mode or the test mode thereof also belongs to a common mode in the prior art, which is not repeated herein.

Of course, the operator can also descend through the slow descending rope 5 consciously and programmatically, and only the safety belt is separated from the gravity separation component 2, so that the safety belt is only connected with the connecting end of the slow descending rope 5, and the slow descending through the slow descending rope 5 is realized. Similarly, the rescue workers can also quickly descend at a slow speed by loosening the safety belt on the body of the operator to be rescued and separating the safety belt from the gravity separation component 2.

Through setting up the slow-falling device, and set up gravity and break away from subassembly 2 in the slow-falling device, break away from subassembly 2 through gravity and hang in predetermineeing the operation height, even make operation personnel or rescue personnel can break away from subassembly 2 and operation personnel separation with gravity fast conveniently, operation personnel just can descend slowly through slow-falling rope 5, and when operation personnel fall, gravity breaks away from subassembly 2 and can break away from automatically under the effect of high altitude dropping impact force, make operation personnel also can descend slowly through slow-falling rope 5 automatically even be in unconscious or the unable condition, make things convenient for operation personnel to obtain the rescue as early as possible.

In use, for example, under a normal working condition, the operator wears a safety belt (also called a full body safety belt or a five-point safety belt) which is tied to the pull ring 26 at one end of the pin 23, so as to connect the operator with the slow-descending device and hang the operator at a preset height through the slow-descending device. Of course, the safety belt also needs to be tied to the connecting end of the slow descending rope 5 at this time, and the operation personnel can not be connected with the slow descending rope 5 in time when sudden situations occur.

And when being in special operating mode, and when the operation personnel can move about by oneself, just can be through loosening being connected of safety belt and pull ring 26 for self only is connected with slowly falling rope 5, and the weight of operation personnel self will drive the link decline of slowly falling rope 5 this moment, and descends with predetermined safe descent speed under the effect of slow-down slowly falling subassembly 3, prevents that the operation personnel from being injured because of the descent speed is too fast.

When the worker suddenly falls due to unconsciousness or incapacity (such as sudden diseases like heatstroke), the pin shaft 23 is influenced by the impact force of falling from high altitude due to the self gravity of the worker, so that the worker tends to be separated from the plug cavity 12, the ball 21 moves outwards towards the groove under the action of the tendency, one side of the ball 21 is directly or indirectly abutted against the inner wall surface of the plug cavity 12, and the other side of the ball 21 is abutted against the wedge-shaped ring 22, so that the wedge-shaped ring 22 is extruded in the movement of the ball 21, and the elastic piece 24 is compressed. When the high-altitude falling impact force is enough large, the ball 21 can be completely separated from the groove on the pin shaft 23 under the high-altitude falling impact force, the pin shaft 23 can be separated from the plugging ring 25 and smoothly separated from the plugging cavity 12, so that the operator at the moment is only connected with the slow descending rope 5 and descends at a preset safe descending speed under the action of the deceleration slow descending assembly 3, and the situation that the operator losing the autonomous movement ability is in a dangerous situation for a long time and cannot be timely rescued is avoided.

When the impact force of falling from high altitude is not large enough, on one hand, if the operator still has the autonomous activity capability, the connection between the safety belt and the pull ring 26 can be automatically disconnected, so that the falling is slowly performed; on the other hand, if the operator does not have the autonomous movement capability, the rescue worker can also slowly descend to be rescued quickly by helping the operator to break the connection between the safety belt and the pull ring 26.

It can be understood that, in the present invention, the complete disengagement of the ball 21 from the groove requires the elastic force against the elastic member 24, and therefore the magnitude of the elastic force is very important and is a key factor for achieving the technical effect of the present invention. The following describes how to adjust the elastic force by taking a spring as an example, and of course, in some other embodiments, other elastic members 24 such as a bellows may be used to achieve the effect of the present invention, so the present invention is not limited to the kind of the elastic member 24.

Alternatively, in the present embodiment, the spring having a suitable spring constant can be selected by replacing the kind of the spring at the time of assembly, and the magnitude of the spring force can be adjusted by selecting springs having different spring constants.

Optionally, in some embodiments, the blocking ring 25 is adjustably sleeved on the pin 23, and the elastic force is adjusted by adjusting the compressed length of the elastic member 24. Illustratively, part of the outer circumference of the pin 23 is provided with an external thread, and the inner circumference of the plugging ring 25 is provided with a corresponding structure, so that the plugging ring 25 can be screwed on the pin 23. Preferably, the plugging ring 25 is of a thin annular structure, a notch is formed in the inner peripheral surface of the plugging ring, the external thread on the pin shaft 23 is of a three-section type connecting structure of a thread section, a straight section and a thread section, when the plugging ring 25 is located on the straight section, the plugging ring 25 can be relatively fixed with the pin shaft 23 even if being subjected to elastic force due to thread resistance, and meanwhile the pin shaft 23 can move without being subjected to thread resistance under the action of high-altitude falling impact force, so that the ball 21 tends to be separated from the groove, and the ball 21 can smoothly slide out of the groove under the action of the high-altitude falling impact force.

Alternatively, in some other embodiments, a breakable connecting structure (not shown) may be used to connect the pin 23 to the descent control device body 1 at a predetermined depth, and the length of the connecting structure is adjusted to select the position of the blocking ring 25 relative to the pin 23, so as to adjust the distance between the groove and the blocking ring 25, and thus adjust the compressed length of the elastic element 24. For example, the connection structure may employ a nylon rope or a steel wire rope that is broken at a predetermined tensile force.

Of course, it should be understood that, in order to ensure that one end of the elastic element 24 can abut against the blocking ring 25, the blocking ring 25 should be fixedly connected to the plug cavity 12, for example, by using a common fixing connection manner such as a threaded connection, a clamping connection, or an adhesive connection, so that the blocking ring 25 is fixed relative to the plug cavity 12, and the elastic element 24 is prevented from being unconstrained due to the position movement of the blocking ring 25, and thus the gravity separation assembly 2 is prevented from failing.

Further, as shown in fig. 3 and 5, the slow descending device body 1 has a decelerating rotary cavity 11, and the decelerating slow descending assembly 3 is disposed in the decelerating rotary cavity 11. The deceleration slow-descending assembly 3 comprises a centrifugal wheel 31 and a slow-descending wheel 33, the rotation speed of the centrifugal wheel 31 corresponds to the descending speed of the slow-descending rope 5, the slow-descending rope 5 is wound on the slow-descending wheel 33 and drives the slow-descending wheel 33 to rotate, the descending speed of the slow-descending rope 5 is faster, the rotation speed of the slow-descending wheel 33 is faster, and the rotation speed of the centrifugal wheel 31 is faster. The centrifugal wheel 31 includes a centrifugal block 313 and a centrifugal shaft 312, the centrifugal shaft 312 is rotatably disposed in the decelerating rotary cavity 11, and the slow descending wheel 33 is drivingly connected to the centrifugal shaft 312 and drives the centrifugal shaft 312 to rotate. The centrifugal block 313 is in transmission connection with the centrifugal shaft 312, so that the centrifugal block 313 rotates along with the centrifugal shaft 312, and when the centrifugal shaft 312 starts to rotate, gravitational potential energy in a falling process can be absorbed, and slow descending is realized.

Specifically, in the present embodiment, as shown in fig. 5 and fig. 6, a sliding limiting cavity 311 is disposed on an outer circumferential surface of the centrifugal shaft 312, the centrifugal block 313 is slidably disposed in the sliding limiting cavity 311, the sliding limiting cavity 311 has an opening along a radial direction of the centrifugal wheel 31, and the centrifugal block 313 can slide out of the sliding limiting cavity 311 through the opening. The centrifugal block 313 abuts against the side wall of the sliding limiting cavity 311, so that the centrifugal block 313 can rotate along with the centrifugal shaft 312, gradually slide out of the sliding limiting cavity 311 through the opening along with the rotation of the centrifugal block 313, and slide and rub with the inner wall surface of the deceleration rotation cavity 11, and the generated friction force can limit the rotation speed of the centrifugal shaft 312, thereby realizing the deceleration slow descending effect on the slow descending rope 5. It can be understood that, as the rotation speed of the centrifugal shaft 312 increases, the pressure between the centrifugal wheel 31 and the inner wall surface of the decelerating rotary cavity 11 increases, and the sliding friction force that can be generated increases, so as to limit the rotation speed of the centrifugal shaft 312 and the descent control wheel 33, and thus limit the descent speed of the descent control rope 5 through the friction between the descent control wheel 33 and the descent control rope 5. Illustratively, in the present embodiment, the section of the decelerating revolving chamber 11 is circular, and the centrifugal block 313 is in the shape of a sector, and the two are in frictional contact to realize a braking effect, thereby further realizing slow descent.

Optionally, as shown in fig. 6, a plurality of centrifugal blocks 313 are arranged on the centrifugal wheel 31, a connecting spring 32 is arranged between adjacent centrifugal blocks 313, a through hole is formed in a side wall of the sliding limiting cavity 311 for the connecting spring 32 to pass through, and the connecting spring 32 can generate a pulling force, so that when the centrifugal shaft 312 is at a low rotation speed, the centrifugal blocks 313 do not slide and rub against an inner wall surface of the decelerating rotary cavity 11, or slide and rub with a small pressure, and the limiting effect of the centrifugal blocks 313 on the rotation speeds of the centrifugal shaft 312 and the descent control wheel 33 is restrained, so that the rescue time is not delayed due to the slow descent speed of the descent control rope 5 by the operating personnel.

Further, as shown in fig. 5, in the present embodiment, in order to better control the descending speed of the descent rope 5, a main gear 34 and a transmission gear 35 are further provided according to a preset transmission ratio, the main gear 34 is drivingly connected to the descent wheel 33 and is meshed with the transmission gear 35, and the transmission gear 35 is drivingly connected to the eccentric shaft 312. By controlling the transmission ratio of the main gear 34 and the transmission gear 35, the deceleration effect of the centrifugal wheel 31 on the descent control rope 5 can be controlled more conveniently.

Example two

In the embodiment, on the basis of the first embodiment, the centrifugal wheels 31 and the transmission gear 35 are provided, so that the condition that the speed reduction effect of a single centrifugal wheel 31 is weak or the centrifugal wheel 31 fails can be prevented, and the descent control device has better reliability.

Illustratively, in the present embodiment, as shown in fig. 5 and 6, two decelerating rotary cavities 11 are provided in the main body of the descent control device, one centrifugal wheel 31 is provided in each decelerating rotary cavity 11, one transmission gear 35 is drivingly connected to each centrifugal wheel 31, and the two transmission gears 35 are engaged with the main gear 34, so that each centrifugal wheel 31 can limit the rotation speed of the descent control wheel 33, thereby ensuring that the descent speed of the descent control rope 5 is not too fast. Even if one centrifugal wheel 31 fails, other centrifugal wheels 31 can play a role in speed reduction, so that the descent control device has better reliability.

EXAMPLE III

In the present embodiment, on the basis of the first embodiment or the second embodiment, a different structure of the centrifugal wheel 31 is provided, and the deceleration effect on the descent control rope 5 can also be achieved.

Specifically, in the present embodiment, a slip limiting shaft (not shown) is disposed on an outer peripheral surface of the centrifugal shaft 312, and the slip limiting shaft extends along a radial direction of the centrifugal wheel 31 and is in a spoke shape. The centrifugal block 313 is provided with a sliding hole (not shown), and is sleeved on the sliding limiting shaft through the sliding hole, so that the centrifugal block 313 can rotate along with the centrifugal shaft 312 and slide along the radial direction of the centrifugal wheel 31. When the centrifugal lifting rope device is used, the centrifugal shaft 312 rotates, the centrifugal block 313 generates a trend of centrifugal sliding along the sliding limiting shaft and is gradually abutted against the inner wall surface of the speed reduction rotation cavity 11 to generate sliding friction, so that the rotating speed of the centrifugal shaft 312 is limited through friction force, and the descending speed of the slow descending rope 5 is limited.

Further, a connecting spring 32 may be disposed between the centrifugal block 313 and the centrifugal shaft 312, for example, the connecting spring 32 is sleeved on the sliding limiting shaft, and two ends of the connecting spring are respectively fixedly connected to the centrifugal shaft 312 and the centrifugal block 313. When the rotation speed of the centrifugal shaft 312 is low, the connecting spring 32 generates a pulling force to pull the centrifugal block 313, so that the centrifugal block 313 does not slide and rub with the inner wall surface of the decelerating rotary cavity 11, or slides and rubs with a small pressure, and the limitation effect of the centrifugal block 313 on the rotation speed of the centrifugal shaft 312 and the slow descending wheel 33 is restrained, so that the rescue time is not delayed due to the fact that the descending speed of the slow descending rope 5 is too low for the operating personnel.

It should be emphasized that, in the third embodiment, the arrangement manner of the plurality of centrifugal wheels 31 and the plurality of transmission gears 35 as in the second embodiment may also be further used, so that the effect of enhancing the reliability of the descent control device can also be achieved; the structure of the connecting spring 32 adopted in the third embodiment can also be applied to the first embodiment and the second embodiment, and the connecting spring 32 can also be arranged to restrict the limiting effect of the centrifugal block 313 on the rotation speed of the centrifugal shaft 312 and the descent control wheel 33.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. Slowly fall device, its characterized in that includes:

the slow descending device comprises a slow descending device body (1), wherein the slow descending device body (1) is provided with a slow descending component (3) and an inserting cavity (12), the slow descending component (3) is connected with a slow descending rope (5), and the slow descending rope (5) is tied to an operator;

the gravity separation component (2) is installed in the plug cavity (12), the gravity separation component (2) comprises a wedge-shaped ring (22), a ball (21), an elastic piece (24), a plugging ring (25) and a pin shaft (23), the pin shaft (23) is detachably connected with the operator, the wedge-shaped ring (22) and the plugging ring (25) are sleeved on the pin shaft (23), the plugging ring (25) is fixedly installed in the plug cavity (12), one end of the elastic piece (24) abuts against the plugging ring (25), the other end of the elastic piece (24) abuts against the wedge-shaped ring (22), an inclined surface of the wedge-shaped ring (22) abuts against the ball (21), the pin shaft (23) is provided with a groove, and a part of the ball (21) is located in the groove;

gravity breaks away from subassembly (2) and is configured as, when round pin axle (23) receives the high altitude impact force's that falls effect, round pin axle (23) begin to break away from grafting chamber (12), ball (21) are followed the slope of wedge ring (22) is to breaking away from the direction motion of recess and extrusion elastic component (24), and work as ball (21) break away from behind the recess, round pin axle (23) can break away from grafting chamber (12), the operation personnel can pass through slowly fall rope (5) slow descending.

2. Descent control device according to claim 1, wherein said wedge-shaped ring (22) comprises a first wedge-shaped ring (22) and a second wedge-shaped ring (22), said balls (21) being interposed between said first wedge-shaped ring (22) and said second wedge-shaped ring (22), said first wedge-shaped ring (22), said balls (21) and said second wedge-shaped ring (22) being in abutment between an inner wall of said plugging chamber and said elastic element (24).

3. A slow descending device according to claim 1, wherein a pull ring (26) is provided at one end of the pin (23), the pull ring (26) is located outside the inserting cavity, and a safety belt is connected to the operator and detachably connected to the pull ring (26).

4. The descent control device according to claim 1, wherein the blocking ring (25) is sleeved on the pin (23) in a position-adjustable manner, and one end of the elastic member (24) fixed in a limited manner abuts against the blocking ring (25).

5. Descent control device according to claim 4, wherein the blocking ring (25) is screwed to the pin (23).

6. Descent device according to claim 4, wherein the blocking ring (25) is in interference fit with the pin (23).

7. The slow descending device according to claim 1, characterized in that the slow descending component (3) comprises a centrifugal wheel (31) and a slow descending wheel (33), the slow descending device body (1) is provided with a slow descending rotary cavity (11), the centrifugal wheel (31) is rotatably arranged in the slow descending rotary cavity (11), the centrifugal wheel (31) comprises a centrifugal block (313) and a centrifugal shaft (312), the centrifugal shaft (312) is rotatably arranged in the slow descending rotary cavity (11), the slow descending rope (5) is wound on the slow descending wheel (33) and drives the slow descending wheel (33) to rotate, the slow descending wheel (33) is rotatably connected with the centrifugal shaft (312), the centrifugal block (313) is rotatably connected with the centrifugal shaft (312) and can be in sliding friction with the inner wall of the slow descending rotary cavity (11).

8. The descent control device according to claim 7, wherein a sliding limiting cavity (311) is provided on an outer circumferential surface of the centrifugal shaft (312), the centrifugal block (313) is slidably disposed in the sliding limiting cavity (311) and abuts against a sidewall of the sliding limiting cavity (311), the sliding limiting cavity (311) has an opening along a radial direction of the centrifugal wheel (31), and the centrifugal block (313) can slide out of the sliding limiting cavity (311) through the opening.

9. The descent control device according to claim 7, wherein a sliding limiting shaft is disposed on an outer circumferential surface of the centrifugal shaft (312), the centrifugal block (313) is slidably disposed on the sliding limiting shaft, the sliding limiting shaft is disposed along a radial direction of the centrifugal wheel (31), and the centrifugal block (313) is capable of sliding along the sliding limiting shaft in a direction away from the centrifugal shaft (312).

10. The slow descending device according to claim 7, wherein the slow descending wheel (33) is in transmission connection with a main gear (34), the main gear (34) is in transmission connection with a transmission gear (35) according to a preset transmission ratio, and the transmission gear (35) is in transmission connection with the centrifugal shaft (312).

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