CN213077255U

CN213077255U - Novel single-hand control self-protection descender

Info

Publication number: CN213077255U
Application number: CN202021320035.0U
Authority: CN
Inventors: 付小华
Original assignee: Zhejiang Weihai Technology Co Ltd
Current assignee: Zhejiang Weihai Technology Co Ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-04-30
Anticipated expiration: 2030-07-08

Abstract

The utility model provides a novel one-hand control self preservation protects descender, aims at solving the coexistence that the descender can't realize one-hand operation function and automatic protect function, and user's the operation degree of difficulty is great when special occasions such as fire rescue are used to and common descender does not possess the technical problem of ending the position protect function when the rope tail end is not tied the protection knot. The utility model discloses a casing, be equipped with on the casing and ensure the auto-lock clutch block, the both sides of ensuring the auto-lock clutch block are equipped with clutch block and spacing clutch block respectively, be equipped with the lockhole on the casing, one side of ensuring the auto-lock clutch block is equipped with the auto-lock tooth's socket with the lockhole intercommunication is kept away from to spacing clutch block, the auto-lock tooth's socket, spacing clutch block, ensure that auto-lock clutch block and clutch block arrange along the circumference of lockhole, auto-lock tooth's socket is located the one side that the clutch block was kept away from to the lockhole, be equipped with supplementary inlet wire and the outlet of wearing to establish the rope on the casing, the inlet wire is located and ensures between.

Description

Novel single-hand control self-protection descender

Technical Field

The utility model relates to a technical field that slowly falls in high altitude especially relates to a novel one-hand control self preservation protects descender.

Background

The descender is a protection device used for protecting operators in outdoor sports scenes or rescue scenes such as extended training, mountain climbing and the like.

European patent publication No. EP0688581B1 discloses a descender-tether device comprising: a first side guide flange for the rope, including a detent protrusion, a second side guide flange for the rope, spaced from the first flange by a lateral gap for passage of the rope, and displaceable between a spaced position for placing the rope in place and removing the rope, and a closed position in which the rope is restrained in the lateral gap for passage of the rope, a cam engaged between the first and second flanges and movable toward and away from the detent protrusion, a cam operating unit actuatable by a user to displace the cam away from the detent protrusion, a cam return spring to urge the cam to move between the first and second flanges, a lateral gap for passage of the rope, the lateral gap extending between a rope input end near the detent protrusion and a rope output end near the cam, the rope output end formed to allow orientation of the rope output end according to a locking orientation, in the locked orientation, the cable passes through the lateral gap serving as a cable passage while surrounding the cam and urging the cam toward the detent projection, at least one of the first and second flanges extending longitudinally from the attachment end to the attachment end, wherein the detent projection, the cam and the lateral gap serving as a cable passage are located at the attachment end and the attachment mechanism is located at the attachment end.

The above patent implements supplementary sliding in the absence of tension of the rope by the cam return spring pushing the cam away from the braking projection, and when the cam operating unit is released during the descending movement of the rope, the tension on the rope pushes the cam toward the braking projection so that the rope is pressed by the cam against the braking projection, thereby implementing braking of the descending movement; the problem is that the structure can not liberate the hands of the user, and the hands of the user can not be automatically protected when being separated from the rope, so that the structure can not be applied to special occasions such as fire rescue.

Chinese patent publication No. CN101352600B discloses a self-locking descender with a detachable handle, comprising: a pulley in the form of a cam that rotates between a locked position of the cable against the brake shoe and a cable release position; an actuating handle of the pulley to effect manual release of the cord at the intermediate position; and a mechanism with a disconnectable mechanical connection between the pulley and the handle after having passed said intermediate position, causing the pulley to disengage and automatically returning the cam to the locking position, the mechanism further comprising a selector coupled to the operating means, designed to occupy an activated or inactivated position, to make it impossible or possible, respectively, to disengage the pulley.

The descending device is switched from a starting state to a non-starting state or reversely switched according to each command pulse on the selector, so that the descending protection of the bistable state is realized.

Chinese patent application No. CN201711134996.5 discloses a self-locking ascending/descending device, which comprises a body, wherein the body is formed by connecting two side plates; a handle part arranged at one end part of the body and a restraining ring body arranged on the body; a gap for accommodating the sliding of the rope is arranged between the two side plates, a braking part is arranged at the bottom in the body, and the upper surface of the braking part is provided with friction braking teeth; and the two side plates are also provided with lock holes for adjusting angles and gaps and allowing the lock catch to pass through. The self-locking function that above-mentioned patent can't realize two ropes and descend is not high in the application rate in outdoor scene.

Disclosure of Invention

The utility model discloses an overcome the coexistence that the descender can't realize one-hand operation function and automatic protect function among the prior art, user's the operation degree of difficulty is great when special occasions such as fire rescue are used to and common descender does not possess the technical problem who ends a protect function when the rope tail end is not tied, provide a novel one-hand control self preservation protects descender, automatic protect function and one-hand operation function and coexistence when the descender can realize both hands and break away from the rope can effectively promote rescue efficiency in special occasions such as fire rescue, in addition, the descender can not break away from the rope when the rope tail end is not tied the protect, has good safety protection performance concurrently when promoting the convenience of use.

In order to achieve the above purpose, the present invention adopts the following technical solution.

The utility model provides a novel one-hand control self preservation protects descender, which comprises a housin, be equipped with on the casing and ensure the auto-lock clutch block, the both sides of ensuring the auto-lock clutch block are equipped with clutch block and spacing clutch block respectively, be equipped with the lockhole on the casing, one side that ensures the auto-lock clutch block is kept away from to spacing clutch block is equipped with the auto-lock tooth's socket with the lockhole intercommunication, the auto-lock tooth's socket, spacing clutch block, ensure that auto-lock clutch block and clutch block arrange along the circumference of lockhole, the auto-lock tooth's socket is located one side that the clutch block was kept away from to the lockhole, be equipped with supplementary inlet wire and the outlet of wearing to establish the rope on the casing, the.

The prior rope descender has the following disadvantages: (1) the device can be operated by one hand, can not realize automatic protection, and can not be operated by one hand; the inability to free the other hand of the rope during descent, particularly the particular range of use, is particularly important for freeing the hand, for example in fire rescue, military operations, etc. Such as 8-shaped rings, ATC, SIMPLE and other descenders, can be operated by one hand without a protection function, and a user can fall down after the hand is separated from the rope. Such as STOP, ID and other descenders, have the function of automatic braking after being stressed, but can descend only by operating the handle with the other hand except the rope; (2) the existing descender for the rope is not tied with a protection knot at the tail end of the rope, and if the descender descends to the tail end of the rope, the descender can be separated from the rope, so that a user faces the falling risk. This requires the user to be skilled in the use and time consuming to tie the rope tail. The descender without automatic protection completely depends on the grasping force of the hand holding the rope to achieve the purposes of controlling the descending speed and stopping when in use, when the descender descends to the tail of the rope, if the descender does not have a protection knot, the rope is difficult to stop descending by the grasping force of the hand, the rope can be separated from the descender to cause a falling accident, while the descender with automatic protection in the prior art also operates the handle by hands except the holding of the rope to realize descending, the descending process is not greatly different from the descending process without automatic protection, usually, the descending process has certain descending speed and inertia, if the descender reaches the tail of the rope without the protection knot, the handle is difficult to release in a very short time, and the possibility of separating from the rope is very high; (3) at present, a self-locking descender capable of realizing double-rope descent does not exist, and the double-rope descent is frequently applied to outdoor sports.

The utility model provides a novel single-hand control self-protection descender, when wearing the rope, the upper end of the rope is fixed on the protection station, the lower end of the rope penetrates along the wire inlet of the shell, and then penetrates out along the wire outlet of the shell, the single-hand control descender is worn on the rope, the position which is two thirty centimeters away from the wire outlet is the holding part of the user, when in use, the descender wears the safety belt, then the safety belt and the lockhole are connected by the safety lock, the safety lock is locked, initially, the safety lock is stressed downwards under the gravity action of the descender, the limiting friction block prevents the descender from rotating clockwise, the friction block prevents the descender from rotating anticlockwise, the limiting friction block and the friction block are mutually reverse limiting, so that the rope and the descender are parallel in the direction of the partial length of the lockhole, the safety lock pulls the rope downwards along the partial length of the lockhole under the gravity action of the descender, part of the rope is pressed into the self-locking tooth grooves, the rope is stopped after being extruded by the self-locking tooth grooves and the safety lock to form a self-locking protection state, and the two hands of a descender cannot slide downwards when being separated from the rope, so that self-locking protection is formed.

When a descender needs to be changed from a self-locking protection state to a descending state, the descender only needs to pull downwards at a holding part of the rope with force, the friction block is stressed by the pulling force of the braking end, the descender rotates clockwise by about 20 degrees under the lever action, meanwhile, the pulling force influences that the part of the safety lock extruding rope is separated from the self-locking tooth groove and ascends to the highest position of the lock hole, the braking force of the self-locking tooth groove extruding rope is not available, the upper end of the rope is separated from the self-locking friction block, and the rope and the descender are controlled by the force of holding the braking end of the rope besides a small amount of friction resistance on the limiting friction block, the safety lock and the friction block, so that the control can be realized by one hand; based on the consideration of the safety protection of a user, the pulling force for driving the descender to be switched from the self-locking state to the descending state is initially large, the descender is kept to have the same braking force as other descenders when descending is carried out after switching is completed, then the descender can descend at a high speed by properly keeping a little holding power, when the descending speed is too high or the two hands of the user are separated from the descender, the descender can rotate anticlockwise, the descender is switched back to the self-locking state from the descending state, and effective automatic protection is formed. The utility model can realize automatic protection while operating with one hand, and is particularly suitable for the use scenes of fire rescue, special combat and the like which need to free both hands and pause at any time; furthermore, the descender at rope decline in-process, meet the rope tail end and do not beat under the condition of protection knot, can form the protection mode automatically, make descender can not cause to drop and the tenesmus when the rope is used up, have good safety protection performance concurrently when promoting the use convenience, it is very friendly to the user that does not possess relevant professional skill.

Preferably, the shell comprises a front shell and a rear shell which are arranged at intervals, the lock hole penetrates through the shell in the thickness direction, the lock hole is in an oblong shape, the front shell comprises a first side face, the limiting friction block and the friction block are respectively located at two ends of the first side face in the length direction of the first side face, and the length direction of the lock hole is parallel to the normal of the first side face. The long circular lock hole is convenient for the position adjustment of the safety lock, the length of the lock hole is matched with the rotation angle of the friction block to realize the self-locking function, and the first side face is used as the positioning reference of the lock hole.

Preferably, the friction block comprises a body, and one end of the body, which is close to the self-locking friction block, is provided with a circular arc-shaped wire passing groove. The line passing groove is arc-shaped, and the rope can be quickly positioned in the line passing groove when being penetrated and arranged on the descender, so that the shaking amplitude of the rope in the use process is effectively reduced.

Preferably, the self-locking friction block is arranged on the side face, close to the front shell, of the rear shell, a self-locking gap is formed between the self-locking friction block and the front shell, and the cross section of the self-locking friction block is L-shaped. When the self-locking protection is carried out, the rope slides into the self-locking clearance, the protruding part of the self-locking friction block is ensured to be rubbed to the rope, the sliding resistance of the descender on the rope is increased, and the safety lock device pulls down and extrudes the rope into the self-locking tooth groove under the action of gravity of the descender to form a self-locking protection state. In addition, the limiting friction block enables the rope to be slightly bent in a stressed state in a descending state, when the braking tension of the rope braking end disappears (namely the rope can be separated by hands), the counter-acting force of the force and the gravity of a person descending on the safety lock rotate the descending device in the anticlockwise direction until the rope is straightened, and the descending device returns to a self-locking protection state. In order to ensure the safety of a user of the descender and ensure that the descender can be self-locked even if the diameter of the rope is smaller, the descender is provided with a self-locking friction block on the right side of the upper end position of the rope, so that the descender can quickly enter a self-locking state under the condition of smaller diameter of the rope.

Preferably, the self-locking friction block is ensured to comprise a horizontally arranged friction piece and a vertically arranged support piece, and a transition piece is arranged between one side of the support piece close to the front shell and the friction piece. The transition piece is used for enhancing the structural strength of the friction piece and the support piece and improving the service durability of the friction piece and the support piece.

Preferably, the lock hole for installing the safety lock comprises a self-locking end and a descending end, the self-locking end and the descending end are arranged along the length direction of the lock hole, and the self-locking end is located on one side, away from the limiting friction block, of the self-locking tooth groove. The technical scheme limits the structure of the lock hole.

Preferably, when the first side surface is horizontal, the rope is limited between the safety lock and the self-locking end, the rope is partially embedded into the self-locking tooth groove, when an included angle between the first side surface and the horizontal direction is alpha, the rope is located between the safety lock and the descending end, and the rope is separated from the self-locking tooth groove.

Preferably, alpha is between 15 and 25 degrees, and the friction block is positioned below the limit friction block along the vertical direction.

Preferably, the horizontal distance between the lock hole and the limiting friction block is D, the horizontal distance between the lock hole and the friction block is D, and D is less than D. Above-mentioned design is based on moment's consideration, and the horizontal distance between lockhole and the clutch blocks is greater than the horizontal distance between lockhole and the spacing clutch blocks, and the user exerts less power in the position of holding and can switch over the descender from the auto-lock protection state to the decline state, can reduce first-aid staff's physical demands in use scenes such as rescue to effectively promote rescue ability.

Preferably, the self-locking tooth groove is close to the self-locking end and comprises a first tooth group and a second tooth group along the thickness direction of the shell, and an included angle between the first tooth group and the second tooth group is an acute angle.

To sum up, the utility model discloses following beneficial effect has: (1) the utility model discloses realize when using the descender to descend on the rope, but the descender can both automatic protection immediately when the hand pine takes off the brake rope appear simultaneously in one-hand operation. The descender can one-hand operation in the past not have protect function, has protect function's must both hands operation, the utility model discloses can realize automatic protection when one-hand operation, be particularly suitable for fire rescue, special type soldier this kind of hand of battle to do other usage, still need the application of stopping at any time. The rope is also suitable for the players of rope novice, and has safer guarantee; (2) the descender can automatically form a protection mode when the rope is descended and a protection knot is not tied at the tail end of the rope, so that a descender cannot fall off and fall down when the rope is used up; (3) automatic protection under the situation of double-rope descending use can be realized; (4) the descender can realize the application that other people control the rope brake end on the ground to descend the descender to the ground under the condition that the descender loses the action ability; (5) because the utility model discloses have self preservation to protect function and control easy operation, can realize safe the use after simple training, be fit for doing the high building ware of fleing.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a right side view of the present invention.

Fig. 3 is a plan view of the present invention.

Fig. 4 is a schematic view of the self-locking tooth socket of the present invention.

Fig. 5 is a schematic view of the descender of the present invention in a self-locking state.

Fig. 6 is a schematic view of the descender of the present invention in a lowered state.

Fig. 7 is a schematic diagram of embodiment 2 of the present invention.

In the figure:

casing 1, procapsid 1a, back casing 1b, ensure auto-lock clutch block 2, friction piece 2a, support piece 2b, transition piece 2c, clutch block 3, body 3a, spacing clutch block 4, lockhole 5, auto-lock end 5a, decline end 5b, auto-lock tooth's socket 6, first tooth group 6a, second tooth group 6b, incoming line 7, outlet 8, first side 9, cross line groove 10, auto-lock clearance 11.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

as shown in fig. 1 to 7, a novel single-hand controlled self-protection descender comprises a shell 1, wherein a self-locking friction block 2 is arranged on the shell, a friction block 3 and a limiting friction block 4 are respectively arranged on two sides of the self-locking friction block, a lock hole 5 is arranged on the shell, a self-locking tooth groove 6 communicated with the lock hole is arranged on one side, away from the self-locking friction block, of the limiting friction block, the self-locking tooth groove, the limiting friction block and the friction block are circumferentially arranged along the lock hole, the self-locking tooth groove is arranged on one side, away from the friction block, of the lock hole, a wire inlet 7 and a wire outlet 8 for assisting in threading a rope are arranged on the shell, the wire inlet is arranged between the self-locking friction block and the limiting friction block, and the wire outlet is; the shell comprises a front shell 1a and a rear shell 1b which are arranged at intervals, the lock hole is communicated along the thickness direction of the shell, the lock hole is in an oblong shape, the front shell comprises a first side surface 9, the limiting friction block and the friction block are respectively positioned at two ends of the first side surface along the length direction of the first side surface, and the length direction of the lock hole is parallel to the normal of the first side surface; the friction block comprises a body 3a, and one end of the body, which is close to the self-locking friction block, is provided with a circular arc-shaped wire passing groove 10; the self-locking friction block is ensured to be arranged on the side surface of the rear shell close to the front shell, a self-locking gap 11 is ensured to exist between the self-locking friction block and the front shell, and the cross section of the self-locking friction block is ensured to be L-shaped; the self-locking friction block is ensured to comprise a friction piece 2a arranged horizontally and a support piece 2b arranged vertically, and a transition piece 2c is arranged between one side of the support piece close to the front shell and the friction piece; the lock hole for mounting the safety lock comprises a self-locking end 5a and a descending end 5b, the self-locking end and the descending end are arranged along the length direction of the lock hole, and the self-locking end is positioned on one side of the self-locking tooth socket, which is far away from the limiting friction block; when the first side surface is horizontal, the rope is limited between the safety lock and the self-locking end, the rope is partially embedded into the self-locking tooth groove, when the included angle between the first side surface and the horizontal direction is alpha, the rope is positioned between the safety lock and the descending end, and the rope is separated from the self-locking tooth groove; alpha is between 15 degrees and 25 degrees, and the friction block is positioned below the limiting friction block along the vertical direction; the horizontal distance between the lock hole and the limiting friction block is D, the horizontal distance between the lock hole and the friction block is D, and D is less than D; the auto-lock tooth's socket is close to the auto-lock end, and the auto-lock tooth's socket includes first tooth group 6a and second tooth group 6b along casing thickness direction, and the contained angle between first tooth group and the second tooth group is the acute angle.

As shown in fig. 1, the descender comprises a front shell and a rear shell in the normal direction of a drawing, the end surface of the front shell is triangular, the end surface of the rear shell is irregular quadrilateral, the upper end surface of the front shell is a first side surface, the front shell and the rear shell are arranged at intervals in the normal direction of the drawing, a limiting friction block is close to an angular point at the upper left corner of the rear shell, a self-locking friction block is ensured to be close to the angular point at the upper right corner of the rear shell, the friction block is close to the angular point at the lower right corner of the rear shell, a lock hole is communicated along the thickness direction of the shells, the lock hole is in an oblong shape, the length direction of the lock hole is perpendicular to the first side surface, the limiting friction block and the friction block are respectively close to the left end and the right end of the first side surface, the lock hole is close, the self-locking tooth groove is communicated with the left side of the lock hole; as can be seen from fig. 2, the right end of the self-locking friction block is ensured to be fixed at the upper end of the rear shell, the self-locking friction block is ensured to comprise a friction piece and a support piece, the friction piece is horizontally arranged, the support piece is vertically arranged, the right end of the friction piece is connected with the upper end of the support piece, a transition piece is arranged between the lower end surface of the friction piece and the left side surface of the support piece, the left side surface of the transition piece is an arc surface, the friction block comprises a body, the upper end of the body is provided with an arc-; the self-locking tooth socket comprises a first tooth group on the left side and a second tooth group on the right side, and as can be seen by combining fig. 4, an included angle between the first tooth group and the second tooth group is an acute angle, the first tooth group and the second tooth group respectively comprise a plurality of teeth from top to bottom, and the number of each tooth group is 4 in the embodiment; as shown in fig. 3, a self-locking gap is ensured to be left between the friction piece of the self-locking friction block and the front shell, and the distance between the front shell and the rear shell is gradually increased from left to right; in addition, the distance between the limiting friction block and the self-locking friction block is ensured to be L, the distance between the self-locking friction block and the friction block is ensured to be L, L < L in the embodiment, the horizontal distance between the lock hole and the limiting friction block is D, the horizontal distance between the lock hole and the friction block is D, and D < D in the embodiment.

Fig. 5 shows a self-locking protection state after a rope is installed on a descender, the upper end of the rope is fixed at a protection station, the middle of the rope penetrates through the descender, the descender is a handle end after being out of twenty-thirty centimeters, a descender wears a safety belt, the safety belt is connected with a descender locking hole through a main lock and then is locked, the main lock hung on the safety belt after being subjected to the gravity of the descender can be stressed downwards, a limiting friction block prevents the descender from rotating clockwise, the friction block prevents the descender from rotating anticlockwise, the rope and the descender are parallel to each other in the direction of the longer locking hole, the main lock pulls the rope downwards along the longer locking hole of the descender under the gravity of the descender, the rope is stopped after being extruded by a self-locking tooth socket and a safety lock to form a self-locking protection state, and the descender can not slide downwards even if the hand.

The self-locking friction block basically has very small friction force on the rope in a descending state, but the descender rotates about 20 degrees in the anticlockwise direction after the hand of the descender leaves the rope braking end (namely, the self-locking protection state indicated by the self-locking schematic diagram), so that the protruding part of the self-locking friction block is ensured to be rubbed to the rope, the sliding resistance of the descender on the rope is increased, and the safety lock device pulls and extrudes the rope into the self-locking tooth groove under the action of the gravity of the descender to form the self-locking protection state.

FIG. 6 is a schematic diagram showing a descender in a descending state, when a descender needs to be converted from a protection state to the descending state, the descender only needs to pull the rope by a force downward from a hand-held braking end of the rope, the friction block of the descender is forced by the tension of the braking end to rotate the descender clockwise by about 20 degrees under the lever action, meanwhile, the tension affects the extrusion rope part of the safety lock to be pulled out from the self-locking tooth slot and ascend to the highest position of the locking hole, at the moment, the braking force for extruding the rope by the self-locking tooth slot is not available, the upper end of the rope is also separated from the self-locking friction block, the rope and the descender are controlled by the force of the braking end of the rope, except for a limited friction block, the safety lock and the friction block, the rope and the descender can be converted into the descending state by one hand, the pulling force is relatively large at first time, which is considered by the protection state, the, then the descender can descend at a higher speed by properly keeping a little grip, and if the rope is released too fast or the rope is released by hands in a descending state, the descender can rotate about 20 degrees in the counterclockwise direction (namely, in a self-locking protection state shown by a self-locking schematic diagram), so that automatic protection is realized.

The limiting friction block makes the rope slightly bend in a stressed state in a descending state, when the braking tension of the rope braking end disappears (namely the rope can be separated by hand), the counter acting force of the force and the gravity of a person who descends on the safety lock rotate the descender in the anticlockwise direction until the rope is straightened, and the descender returns to a self-locking protection state. In order to ensure the safety of a user of the descender and ensure that the descender can be self-locked even if the diameter of the rope is smaller, the descender is provided with a self-locking friction block on the right side of the upper end position of the rope, so that the descender can quickly enter a self-locking state under the condition of smaller diameter of the rope.

Example 2:

embodiment 1 has described a single rope money, and this embodiment provides a design of a double rope money, and its structure is basically the same as the single rope money in embodiment 1, except that this embodiment connects the descenders of the double rope money side by side through two descenders in embodiment 1, and this connection can be realized by a plurality of fixing methods such as bonding, but, in order to guarantee the structural strength of the descender, avoid the separation phenomenon because of the bonding is not firm, often use the mould to make it into one piece.

Claims

1. The utility model provides a novel one-hand control self preservation protects descender, which comprises a housin, a serial communication port, be equipped with on the casing and ensure the auto-lock clutch block, the both sides of ensuring the auto-lock clutch block are equipped with clutch block and spacing clutch block respectively, be equipped with the lockhole on the casing, one side that ensures the auto-lock clutch block is kept away from to spacing clutch block is equipped with the auto-lock tooth's socket with the lockhole intercommunication, the auto-lock tooth's socket, spacing clutch block, ensure that auto-lock clutch block and clutch block arrange along the circumference of lockhole, the auto-lock tooth's socket is located one side that the clutch block was kept away from to the lockhole, be equipped with supplementary incoming line and the outlet of wearing to establish the rope on the casing.

2. The novel single-hand-controlled self-protection descender of claim 1, wherein the housing comprises a front housing and a rear housing which are arranged at intervals, the lock hole penetrates through the housing in the thickness direction, the lock hole is in an oblong shape, the front housing comprises a first side face, the limiting friction block and the friction block are respectively located at two ends of the first side face in the length direction of the first side face, and the length direction of the lock hole is parallel to the normal of the first side face.

3. The novel single-hand controlled self-protection descender of claim 1, wherein the friction block comprises a body, and one end of the body close to the self-locking friction block is provided with a circular arc-shaped wire passing groove.

4. The novel single-hand-controlled self-protection descender of claim 2, wherein the self-locking friction block is ensured to be mounted on the side surface of the rear shell close to the front shell, a self-locking gap is ensured to exist between the self-locking friction block and the front shell, and the cross section of the self-locking friction block is ensured to be L-shaped.

5. The novel single-hand-controlled self-protection descender of claim 4, wherein the self-locking friction block comprises a horizontally arranged friction member and a vertically arranged support member, and a transition member is arranged between one side of the support member close to the front housing and the friction member.

6. The novel single-hand-controlled self-protection descender of claim 2, wherein the locking hole for installing the safety lock comprises a self-locking end and a descending end, the self-locking end and the descending end are arranged along the length direction of the locking hole, and the self-locking end is located on one side, away from the limiting friction block, of the self-locking tooth groove.

7. The novel single-hand-controlled self-protection descender of claim 6, wherein when the first side is horizontal, the rope is limited between the safety lock and the self-locking end, the rope is partially embedded into the self-locking tooth socket, when an included angle between the first side and the horizontal direction is α, the rope is located between the safety lock and the descender, and the rope is separated from the self-locking tooth socket.

8. The novel single-hand controlled self-protection descender of claim 7, wherein α is between 15 ° and 25 ° and the friction block is vertically below the limiting friction block.

9. The novel single-hand controlled self-protection descender of claim 1, wherein the horizontal distance between the lock hole and the limiting friction block is D, the horizontal distance between the lock hole and the friction block is D, and D < D.