WO2013152517A1

WO2013152517A1 - Lowering device

Info

Publication number: WO2013152517A1
Application number: PCT/CN2012/074168
Authority: WO
Inventors: 何少敦
Original assignee: He Shaodun
Priority date: 2012-04-11
Filing date: 2012-04-17
Publication date: 2013-10-17
Also published as: CN102613946B; CN102613946A

Abstract

Disclosed is a rod-type lowering device formed of a core axle (1) and an outer sleeve (2). An outer sleeve sliding rope hole (2.3) is provided on the outer sleeve, and a rope pressure ring (2.4) is also provided on the outer sleeve. The rope pressure ring can slide up or down under the manual control of a person and when the rope pressure ring is located at the position of the sliding rope hole, a wound rope (3.2) on the core axle is squeezed, the frictional force on the wound rope becomes greater, and a person (4) will stop being lowered. When the rope pressure ring moves upwards away from the position of the sliding rope hole below, the wound rope is no longer compressed, the frictional force on the wound rope lessens and the person will be lowered. The lowering device solves the problem of current rod-type lowering devices being inconvenient to use. Not only can the lowering device serve as a suspension tool during work such as cleaning or fitting the outer walls of a building, but the device can also serve as a suspension tool during tasks such as fire-fighting and rescue from buildings, emergency response or high altitude rescue, and serve as specialized equipment for airborne landing of personnel.

Description

a descender

Technical field

The present invention relates to a descender, and more particularly to a descender that is manually controlled by gravity of the human body.

Background technique

In the "Technical Specifications for Safety of Seat Type Single Slings for Building Exterior Wall Cleaning", the types of descenders today include: rod type, multi-plate type, 8-word ring type and shackle type. When using the 8-word ring lowering device or the shackle type lowering device, the operator must lift the free end rope up when landing; when the rope length is long, the gravity is very large, and sometimes even the problem of lifting the rope is given. Construction and operation bring a lot of trouble. In addition, shackle-type descenders are currently not recommended for use due to some safety issues.

Although the stick type is very safe, in actual use, the operator is also inconvenient to operate when descending; when using, the operator can wrap the free end of the working rope around the sliding rope mouth to lock the lowering device, and the working rope is taken from the sliding rope mouth. Unwinding can achieve a drop, but when unwinding, care should be taken to pull down the working rope to prevent a sudden drop; such an operation causes great inconvenience to the user. Therefore, even if the 8-word loop downer is inconvenient in operation, people are still willing to choose it.

Summary of the invention

In order to solve the problem of inconvenient use of the rod type reducer, the present invention provides a rod type lowering device which is composed of a mandrel and an outer sleeve, and an outer sleeve sliding rope opening is arranged on the outer sleeve, on the outer sleeve The pressure rope loop is also provided, and the pressure rope loop can be made up and down under the control of the human hand. When the pressure rope loop is in the position of the sliding rope mouth, the rope on the mandrel is squeezed, the friction of the rope is increased, and the human body stops. Decrease; when the pressure loop is moved upwards away from the position of the sliding rope, the rope is no longer compressed, the friction of the rope is reduced, and the human body is lowered. The descending device proposed by the invention can be used not only as a hanging tool for building exterior wall cleaning, decoration, etc., but also as a building fire rescue, rescue or high-altitude life-saving, working suspension tool, and also as a personnel when airborne Special equipment.

The technical solution of the present invention solves the technical problem, a descender is composed of a mandrel and an outer sleeve, wherein the mandrel is provided with an upper end and a lower end, and a lower end of the mandrel is provided with a lower hook opening, and the upper end An upper sliding rope mouth is arranged on the head, a sliding rope opening is arranged on the lower end head, and a positioning member is further disposed on the end, the outer sleeve is provided with a sleeve and a fixed opening, and the working rope is fixed at a high height through the fixed end The upper sliding rope opening at the upper end of the mandrel is wound around the mandrel to form a roping, and then the lower sliding end of the lower end is suspended from the sleeve to the lower portion, and the outer sleeve is sleeved at the upper end and the lower end of the mandrel. The head is fixed by the engagement between the positioning member and the fixing port, and the human body is fixed on the lower hook opening of the mandrel, wherein the outer sleeve is further provided with an outer sleeve sliding rope opening, The outer sleeve sliding rope mouth is aligned with the lower end sliding rope mouth, and the outer sleeve is further provided with a pressure rope ring with a shutter. When the pressure rope ring is placed at the outer sleeve sliding rope mouth position, the pressure rope ring will work. The rope is pressed against the sliding rope.

When the working rope is wound around the lowering device, the working rope can be wound according to the weight of the human body. When suspending, fix the human body on the lower hook of the lowering device, and manually place the pressure rope ring at the position of the outer sleeve sliding rope. At this time, the pressure rope ring presses the working rope against the lower end of the sliding rope. On the mouth, the friction of the rope is increased, and the human body is suspended in the air; when it is required to descend, the pressure loop is moved upward by manual control to leave the jacket. The position of the cylinder sliding rope mouth, at this time the pressure rope loop no longer presses the working rope, the friction of the rope is reduced, and the human body is lowered by the action of gravity.

The preferred embodiment of the present invention is: the outer sleeve is further provided with a guide rod and a compression spring, the compression spring is mounted on the guide rod, the pressure rope loop moves up and down along the guide rod, and the compression spring presses the pressure rope ring against the outer sleeve The position of the tube slide rope.

The preferred embodiment of the present invention is: the outer sleeve is further provided with a guide rod and a compression spring, the compression spring is mounted on the guide rod, the pressure rope loop moves up and down along the guide rod, and the compression spring presses the pressure rope ring against the outer sleeve In the position of the sliding rope mouth, a rope seat and a pulling rope are further arranged on the outer sleeve, and the pulling rope is connected and fixed by the rope seat through the rope seat, and the human hand controls the pressure rope ring to move up and down by the pulling rope.

The preferred embodiment of the present invention is: further provided with a rotating sleeve, the pressure rope loop has a cylindrical surface that is sleeved with the rotating sleeve, and the rotating sleeve is sleeved outside the pressure rope loop, and the sliding sleeve is disposed on the outer sleeve, and the cylinder is arranged on the rope loop a first sliding propulsion block is disposed on the surface, and a sliding positioning groove and a first oblique sliding propulsion groove are disposed on the rotating sleeve, and the sliding positioning block is embedded in the sliding positioning groove to restrict the axial movement of the rotating sleeve, the first The sliding propulsion block is embedded in the first oblique sliding propulsion groove, and the rotating sleeve is further provided with a rotating handle. When the hand rotates the handle, the rotating sleeve is rotated. When the rotating sleeve rotates, the first oblique sliding propulsion groove advances through the first sliding. The block pushes the pressure rope loop to move up and down. When the hand is released, under the action of the elastic force, the compression spring presses the pressure rope ring against the position of the sliding rope of the outer sleeve to play the self-locking action.

The preferred solution of the present invention is as follows: a second oblique sliding propulsion groove is further disposed on the rotating sleeve, and a pressure seat that is sleeved with the rotating sleeve is further disposed, and the rotating sleeve is sleeved outside the pressure seat, and the pressing seat is provided with a first a second sliding propulsion block, the second sliding propulsion block is embedded in the second oblique sliding propulsion slot, and when the manipulator pulls the pressure seat downward to move the pressure seat downward, the second sliding propulsion block on the pressure seat passes the second The oblique sliding propulsion groove drives the rotating sleeve to rotate. When the rotating sleeve rotates, the first oblique sliding propulsion groove pushes the pressure rope ring to move up and down through the first sliding propulsion block. When the hand is released, under the action of the elastic force, the compression spring will The pressure rope ring is pressed against the position of the outer sleeve sliding rope to play the self-locking action.

A preferred embodiment of the present invention is that a second fixing member is further disposed on the pressure seat, and a hand holding sleeve is further disposed. The hand holding sleeve is provided with a second fixing opening, and the hand holding sleeve is sleeved outside the pressure seat and The second fixing port and the second fixing member are fixed on the pressing seat, and the holding sleeve has a portion for grasping by a human hand, and the pressing seat moves downward together when the hand grips the pulling sleeve.

The preferred embodiment of the present invention is: a guide rod is further disposed on the outer sleeve, and the pressure rope loop is moved up and down along the guide rod, and a rotating sleeve is further disposed, the pressure rope loop has a cylindrical surface that is sleeved with the rotating sleeve, and the rotating sleeve is sleeved A sliding positioning block is arranged on the outer sleeve outside the pressure ring, a first sliding propelling block is arranged on the cylindrical surface of the pressing rope ring, and a sliding positioning groove and a first oblique sliding pushing groove are arranged on the rotating sleeve. The sliding positioning block is embedded in the sliding positioning groove to restrict the axial movement of the rotating sleeve. The first sliding pushing block is embedded in the first oblique sliding pushing groove, and the rotating sleeve is further provided with a rotating handle, and the outer sleeve is A torsion spring is arranged between the rotating sleeves. Under the action of the torsion spring, the pressing rope ring is pressed against the position of the sliding rope mouth of the outer sleeve. When the hand rotates the handle, the rotating sleeve is rotated, and the first oblique sliding advances when the rotating sleeve rotates. The groove pushes the pressure rope ring to move up and down through the first sliding propulsion block. When the hand is released, under the action of the torsion spring, the pressure rope ring is pressed against the position of the outer sleeve sliding rope to play the self-locking action.

The preferred embodiment of the present invention is: further provided with a rocker assembly for controlling the upper and lower movement of the pressure rope loop along the guide rod, the rocker assembly mainly comprising a rocker, a connecting rod connecting the rocker and the pressure rope ring, and a support And a first support shaft, a second support shaft, and a third support shaft, wherein the support base is fixed on the outer sleeve, the connecting rod and the rocker are connected by a first support shaft, and the connecting rod and the pressure rope loop pass through The two shafts are connected, the rocker and the support are connected by a third support shaft, and the rocker is rocked with the third support shaft as a fulcrum. The invention has the beneficial effects that the user can simply control the rocker to move the pressure loop up and down during use, and the human body can easily suspend or descend, and the operation is simple, safe and convenient.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6, and FIG. 7 are schematic structural views of a conventional rod type descender; FIG. 1, FIG. 2, and FIG. 7 are schematic diagrams of a planar structure, FIG. 4, FIG. 5 is a partial structural view, FIG. 6 is an external perspective view, and FIG. 2 and FIG. 7 are a roping diagram of the working rope in use.

8, FIG. 9, FIG. 10, and FIG. 11 are schematic structural views of a first embodiment of the present invention; wherein FIG. 8 is a schematic diagram of an external structure, and FIG. 9, FIG. 10, and FIG.

12 and 13 are partial structural views of a second embodiment of the present invention.

14 and FIG. 15 are schematic diagrams showing a partial structure of a third embodiment of the present invention.

16, FIG. 17, FIG. 18, FIG. 19, and FIG. 20 are partial structural views of a fourth embodiment of the present invention.

21, 22, 23, 24, and 25 are partial structural views of a fifth embodiment of the present invention.

26 and 27 are partial structural views of a sixth embodiment of the present invention.

28 and 29 are partial structural views of a seventh embodiment of the present invention.

30 and 31 are partial structural views of an eighth embodiment of the present invention.

In the picture:

1. Mandrel, 1. la upper end, 1. lal upper sliding rope mouth, 1. Ia2 first positioning member, 1. Ia2. 1 positioning member inclined surface, 1. lb lower end, 1. lbl sliding rope opening, 1 2a hook hook, 1. 2b lower hook mouth;

2 outer sleeve, 2. 1 set of mouth, 2. 2 first fixed port, 2. 3 sliding rope mouth, 2. 4 pressure rope ring, 2. 4. 1 pressure rope ring valve, 2. 4. 2 cylindrical surface , 2. 4. 3 first sliding propulsion block, 2. 5. 1 first guiding rod, 2. 5. 2 second guiding rod, 2. 6. 1 first compression spring, 2. 6. 2 second pressure Spring, 2. 6. 3 torsion spring, 2. 7 rope seat, 2. 8 rope, 2. 9 rotating sleeve, 2. 9. 1 turning handle, 2. 9. 2A sliding positioning groove, 2. 9. 2B The first oblique sliding propulsion groove, 2. 9. 2C second oblique sliding propulsion groove, 2. 10 sliding positioning block, 2. 11 pressure seat, 2. 11. 1 second sliding propulsion block, 2. 11. 2 Second positioning member, 2. 12 hand grip sleeve, 2. 12. 1 second fixed port,

3. Working rope, 3. 1 working rope fixed end, 3. 2 winding rope, 3. 3 working rope free end;

4. The human body;

5. Rocker assembly, 5. 1 rocker, 5. 2 linkage, 5. 3 support, 5. 4a first axle, 5. 4b second axle, 5. 4c third axle. detailed description

1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6, and FIG. 7 are schematic structural views of a conventional rod type lowering device; wherein FIG. 1, FIG. 2, and FIG. 7 are schematic structural views, FIG. 3 and FIG. Figure 5 is a partial structural view, Figure 6 is an external perspective view, Figure 2, Figure 7 is the working rope when in use Rope diagram. The figure shows that the conventional rod type lowering device is composed of a combination of a mandrel 1 and an outer sleeve 2, and the mandrel 1 is provided with an upper end l.la and a lower end l.lb, and the mandrel 1 is disposed at both ends. There are upper hook opening 1.2a, lower hanging hook opening 1.2b, upper end head l.la and lower end head 1.1b respectively provided with upper sliding rope opening l.lal and sliding rope opening l.lbl, and also on upper end 1.1a a second positioning member l. la2, the outer sleeve 2 is provided with a sleeve 2.1, a first fixed port 2. 2, the working rope 3 is fixed at a high position through the fixed end 3.1, through the core The upper sliding rope opening l.lal of the upper end 1.1a of the shaft 1 is wound around the mandrel 1 to form a roping 3.2 and then hangs down from the lower rope end l.lbl of the lower end l.lb to the lower portion, and the outer sleeve 2 is sleeved The human body 4 is fixed to the lower hook opening 1.2b of the mandrel 1 on the upper and lower ends of the mandrel and by the cooperation between the first positioning member 1. Ia2 and the first fixing opening 2.2.

Fig. 2 is a roping diagram of a conventional rod type lowering device, which shows that the rope is fixed at a high position through the fixed end 3.1, and then directly enters the upper sliding rope opening. l.lal is wound around the mandrel 1. Figure 7 is another roping diagram of the conventional rod type lowering device. The figure shows that the rope is fixed at a high position through the fixed end 3.1, and then passes through the upper hook opening 1.2a, enters the upper sliding rope opening l.lal and then wraps On the mandrel 1. The winding method of Figure 2 is very convenient. Since the working rope does not pass through the upper hook opening 1.2a but directly enters the upper sliding rope opening l.lal, the lowering device can wrap the working rope at any position of the working rope for the rescue lifesaving Or work at heights for convenience. The winding method of Figure 7 causes some trouble for the roping because the other end of the rope must pass through the upper hook opening 1.2a.

The figure shows that in the prior art, the mandrel 1 of the rod lowering is integrally cast or welded together with the upper end l.la and the lower end l.lb. The working principle is to control the descending speed of the descender by the friction generated by the roping 3.2 wound on the descender mandrel 1, and the number of turns of the roping 3.2 can be selected according to the weight of the human body 4, in the mandrel 1 After winding the working rope and then putting on the outer sleeve 2, it can be suspended for fire escape, emergency rescue, cleaning of the external wall of the building or transporting objects from top to bottom. When using, the operator can lock the free end of the working rope 3. 3 around the sliding rope opening l.lbl can lock the lowering device, the free end of the working rope 3. 3 from the sliding rope opening 1. lbl can be lowered, However, when unraveling, care should be taken to pull down the working rope to prevent sudden drop; such an operation causes great inconvenience to the user.

8, FIG. 9, FIG. 10, and FIG. 11 are schematic structural views of a first embodiment of the present invention; wherein FIG. 8 is a schematic diagram of an external structure, and FIG. 9, FIG. 10, and FIG. The figure shows that in the embodiment, the lowering device is composed of a mandrel 1 and an outer sleeve 2, and the mandrel 1 is provided with an upper end l.la and a lower end l.lb, and the lower end of the mandrel 1 is arranged. There is a lower hook opening 1.2b, an upper sliding end 1.1a is arranged on the upper end 1.1a, a sliding rope opening l.lbl is arranged on the lower end l.lb, and a first positioning is also arranged on the end 1.1a. Ia2, the outer sleeve 2 is provided with a sleeve 2.1, a first fixed port 2. 2, the working rope 3 is fixed at a high position through the fixed end 3.1, and the upper sliding rope through the upper end 1.1a of the mandrel 1 The outer sleeve l.lal is wound around the mandrel 1 to form a roping 3.2, and then the lower shaft end l.lbl is passed down from the sleeve 2.1 to the lower portion, and the outer sleeve 2 is sleeved at the upper end of the mandrel 1. The head l.la, the lower end l.lb is fixed by the engagement between the first positioning member 1. Ia2 and the first fixing opening 2.2, and the human body 4 is fixed to the lower hook opening 1.2b of the mandrel 1. Upper

Different from the prior art, in the present embodiment, the outer sleeve 2 is further provided with an outer sleeve sliding rope opening 2.3, the outer sleeve sliding rope opening 2.3 and the lower end of the lower end l.lb of the sliding rope opening l The .lbl is aligned, and the outer sleeve 2 is further provided with a pressure rope loop 2.4. The pressure rope loop 2.4 has a shutter 2.4.1. When the pressure rope loop 2.4 is placed at the position of the outer sleeve slide rope 2.3, the pressure rope loop 2.4 will The working rope is pressed against the ligation rope l.lbl. When winding the working rope on the lowering device, the working rope can be wound according to the weight of the human body. When suspending, the human body is fixed on the lower hook opening of the lowering device, and the pressing rope ring 2.4 is placed on the outer sleeve by manual control. Position of the rope mouth 2.3, when the pressure rope loop 2.4 is placed at the position of the outer sleeve sliding rope opening 2.3, the pressure rope loop 2.4 presses the working rope against the lower rope end l.lbl, at this time the rope 3.2 friction Increase, the human body is suspended in the air; when it is required to descend, the pressure rope ring 2.4 is moved upward by manual control to leave the position of the outer sleeve sliding rope opening 2.3, at which time the pressure rope loop no longer presses the working rope, winding Rope 3.2 lower friction, the human body drops under the influence of gravity.

12 and 13 are partial structural views of a second embodiment of the present invention. Different from the first embodiment, in the embodiment, the first guide rod 2.5.1, the second guide rod 2.5.2, the first compression spring 2.6.1, and the second sleeve are further disposed on the outer sleeve 2. The compression spring 2.6.2, the first compression spring 2.6.1, the second compression spring 2.6.2 are respectively mounted on the first guiding rod 2.5.1, the second guiding rod 2.5.2, and the pressing rope ring 2.4 is made along the guiding rod When moving down, the compression spring presses the pressure ring 2.4 against the position of the outer sleeve sliding rope 2.3. In this example, the compression spring has a self-locking function. When it is required to descend, the pressure rope ring 2.4 is moved upward by manual control to move away from the position of the outer sleeve sliding rope opening 2.3, at which time the pressure rope loop no longer presses the working rope. Tightly, the friction of the rope 2-3 is lowered, and the human body is lowered by the action of gravity; when the hand is released, the pressure rope loop 2.4 moves downward under the action of the elastic force, and the compression of the working rope 3 is resumed to stop the human body from descending.

14 and FIG. 15 are schematic diagrams showing a partial structure of a third embodiment of the present invention. Different from the second embodiment, in the embodiment, the outer sleeve 2 is further provided with a rope seat 2.7 and a pull rope 2.8, and the pull rope 2.8 is connected and fixed by the rope seat 2.7 and the pressure rope loop 2.4, and the human hand pulls. Rope 2.8 controls the pressure rope loop 2.4 to move up and down.

16, FIG. 17, FIG. 18, FIG. 19, and FIG. 20 are partial structural views of a fourth embodiment of the present invention. 2, The rotating sleeve 2. 9 is provided with a cylindrical surface that is sleeved with the rotating sleeve. The second sliding propelling block is provided on the cylindrical surface of the pressure ring 2. 4, 4. 2 is provided on the outer surface of the outer ring. The sliding positioning block 2.10 is embedded in the sliding positioning groove 2. 9. The sliding positioning block 2.10 is embedded in the sliding positioning groove 2. 9. The 2A, the inner side of the rotating sleeve 2. 9 is also embedded in the first oblique sliding propulsion slot 2. The first oblique sliding sliding advancement slot 2. 9. 2B through the first when the handle is turned 2. 2. 1, when the hand rotates the handle 2. 9. 1 to drive the rotating sleeve 2. 9 rotation, the rotating sleeve 2. 9 when the first oblique sliding sliding advancement slot 2. 9. 2B through the first Slide the propeller block 2. 4. 3 Push the pressure rope ring 2. 4 to move up and down; When the hand is released, under the action of the elastic force, the compression spring presses the pressure rope ring 2.4 to the position of the outer sleeve sliding rope opening 2.3. 21, 22, 23, 24, and 25 are partial structural views of a fifth embodiment of the present invention. The second embodiment of the present invention is further provided with a second oblique sliding propulsion groove 2. 9 C; is also provided with a pressure seat 2 sleeved with the rotating sleeve. The first sliding propulsion block 2. 11. 1 is embedded in the pressure seat 2.11. In the second obliquely sliding advancement groove 2. 9. 2C, when the hand presses the pressure seat 2.11 downward to move the pressure seat downward, the second sliding push block on the pressure seat 2. 11. 1 through the second The slanting of the slewing slewing slewing slewing slewing slewing slewing slewing slewing slewing slewing slewing slewing slewing slewing The rope loop 2. 4 is moved up and down; when the hand is released, under the action of the elastic force, the compression spring presses the pressure cord ring 2.4 to the position of the outer sleeve sliding rope opening 2.3.

26 and 27 are partial structural views of a sixth embodiment of the present invention. Different from the fifth embodiment, in this embodiment, The second holding member is provided with a second fixing member 2. 12. 2, a holding sleeve 2. 12 is provided with a second fixing opening 2. 12. 1, 2 固定上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上上下The tube has a portion for gripping by a hand. When the hand is held by the hand gripping sleeve 2. 12 is pulled down and the pressure seat 2.11 moves down.

28 and 29 are partial structural views of a seventh embodiment of the present invention. The action of the torsion spring 2.6.3, under the action of the torsion spring 2.6.3, The first slanting slide advancement slot 2. When the hand rotates the handle 2. 9. 1 when the hand rotates the handle 2.9. 9. 2B through the first sliding propulsion block 2. 4. 3 push the pressure rope ring 2. 4 to move up and down; when the hand is released, under the action of the torsion spring 2.6.3, the pressure rope ring 2.4 is pressed tightly The sleeve slides at the 2.3 position.

30 and 31 are partial structural views of an eighth embodiment of the present invention. Different from the second embodiment, in the embodiment, a rocker assembly 5 for controlling the up and down movement of the pressure ring 2.4 along the guide rod is further provided, and the rocker assembly 5 mainly includes a rocker 5.1. Connecting the rocker 5.1 and the connecting rod 5.2 of the pressing rope ring 2.4, the support 5.3 and the first support shaft 5.4a, the second support shaft 5.4b, and the third support shaft 5.4c, the support base 5.3 is fixed on the outer sleeve 2 The connecting rod 5.2 and the rocker 5.1 are connected by a first support shaft 5.4a, the connecting rod 5.2 and the pressure rope ring 2.4 are connected by a second support shaft 5.4b, and the rocker 5.1 and the support 5.3 pass the third The support shaft 5.4c is connected, and the rocker 5.1 is rocked with the third support shaft 5.4c as a fulcrum.

Claims

1. A descender comprising a combination of a mandrel and an outer sleeve, wherein the mandrel is provided with an upper end and a lower end, the lower end of the mandrel is provided with a lower hook opening, and the upper end is provided with an upper sliding rope opening a lower sliding end is provided with a sliding rope mouth, and a positioning member is further disposed on the end, the outer sleeve is provided with a sleeve and a fixed opening, and the working rope is fixed at a high position through the fixed end, and is passed through the upper end of the mandrel The upper sliding rope is wound on the mandrel to form a roping, and then the lower sliding end of the lower end is suspended from the sleeve to the lower portion, and the outer sleeve is sleeved on the upper end and the lower end of the mandrel and passes through the positioning member. Fixing with the fixing port, the human body is fixed on the lower hook opening of the mandrel, and the outer sleeve is further provided with an outer sleeve sliding rope mouth, the outer sleeve sliding rope mouth and the lower end The sliding rope opening of the head is relatively aligned, and a pressure rope loop with a shutter is also arranged on the outer sleeve. When the pressure rope loop is placed at the position of the sliding rope of the outer sleeve, the pressure rope loop presses the working rope against the sliding rope mouth.

2. The descender according to claim 1, wherein a guide rod and a compression spring are further disposed on the outer sleeve, the compression spring is mounted on the guide rod, and the pressure rope loop is moved up and down along the guide rod, and is pressed. The spring presses the pressure cord ring against the position of the outer sleeve sliding rope.

3. The descender according to claim 2, wherein the outer sleeve is further provided with a rope seat and a pull rope, and the pull rope is connected and fixed by the rope seat through the rope seat, and the human hand controls the pressure rope ring through the pull rope. Move down.

4. The descender according to claim 2, further comprising a rotating sleeve, wherein the pressing rope ring has a cylindrical surface that is sleeved with the rotating sleeve, the rotating sleeve is sleeved outside the pressure rope loop, and the outer sleeve is provided with a sliding a positioning block, a first sliding propulsion block is disposed on the cylindrical surface of the pressure rope ring, and a sliding positioning groove and a first oblique sliding propulsion groove are disposed on the rotating sleeve, and the sliding positioning block is embedded in the sliding positioning groove to restrict rotation The first sliding propulsion block is embedded in the first oblique sliding propulsion groove, and the rotating sleeve is further provided with a rotating handle. When the human hand rotates the handle, the rotating sleeve is rotated, and the rotating sleeve rotates when the first oblique Pushing the pressure rope ring to the upper and lower movements through the first sliding propulsion block to the sliding propulsion groove. When the hand is released, under the action of the elastic force, the compression spring presses the pressure rope ring against the position of the sliding rope of the outer sleeve to play the self-locking action. .

The descender according to claim 2, wherein the rotating sleeve is further provided with a second oblique sliding propulsion groove, and further provided with a pressure seat that is sleeved with the rotating sleeve, and the rotating sleeve is sleeved on the pressure seat Outside, a second sliding propulsion block is disposed on the pressure seat, and the second sliding propulsion block is embedded in the second oblique sliding propulsion groove. When the manipulator pulls the pressure seat downward to move the pressure seat downward, the pressure seat The second sliding propulsion block drives the rotating sleeve to rotate by the second oblique sliding propulsion groove. When the rotating sleeve rotates, the first oblique sliding propulsion groove pushes the pressing rope ring to move up and down through the first sliding propulsion block. Under the action of the elastic force, the compression spring presses the pressure rope ring against the position of the sliding rope of the outer sleeve to play the self-locking action.

6. The descender according to claim 5, wherein a second fixing member is further disposed on the pressure seat, and a holding sleeve is further disposed, and the holding sleeve is provided with a second fixing opening, the hand grip The sleeve is sleeved on the outside of the pressure seat and fixed on the pressure seat through the second fixing port and the second fixing member. The hand sleeve has a portion for grasping by a hand. When the hand grips the hand sleeve and pulls down, the seat is pressed. Move down together.

7. The descender according to claim 1, wherein a guide rod is further disposed on the outer sleeve, the pressure rope loop moves up and down along the guide rod, and a rotating sleeve is further provided, and the pressure rope loop has a rotation a sleeved cylindrical surface, the rotating sleeve is sleeved outside the pressure rope ring, the sliding sleeve is arranged on the outer sleeve, the first sliding propulsion block is arranged on the cylindrical surface of the pressure rope ring, and the sliding positioning groove is arranged on the rotating sleeve And the first oblique sliding sliding groove, the sliding positioning block is embedded in the sliding positioning groove to restrict the axial movement of the rotating sleeve, and the first sliding pushing block is embedded in the first oblique sliding pushing groove, and is further disposed on the rotating sleeve A rotating handle is arranged, and a torsion spring is arranged between the outer sleeve and the rotating sleeve. Under the action of the torsion spring, the pressing rope ring is pressed against the position of the sliding rope mouth of the outer sleeve, and when the hand rotates the handle, the rotating sleeve is rotated and rotated. The first oblique sliding advancement slot passes when the sleeve rotates The first sliding propulsion block pushes the pressure rope ring to move up and down. When the hand is released, under the action of the torsion spring, the pressure rope ring is pressed against the position of the sliding shaft of the outer sleeve to play a self-locking action.

8. The descender according to claim 2, further comprising a rocker assembly for controlling the up and down movement of the pressure rope loop along the guide rod, the rocker assembly mainly comprising a rocker, a connecting rocker and a connecting rod of the pressure rope loop, a support, and a first support shaft, a second support shaft, and a third support shaft, wherein the support base is fixed on the outer sleeve, and the connecting rod and the rocker are connected through the first support shaft, The connecting rod and the pressure rope ring are connected by a second support shaft, the rocker and the support are connected by a third support shaft, and the rocker is rocked with the third support shaft as a fulcrum.