CN219689183U - Automatic control drop protector with prevent maloperation - Google Patents

Abstract

The utility model discloses an automatic stopping and descending protector with misoperation prevention function, which comprises a base, a cam, a handle base and a handle, wherein the cam is hinged to the base, and when a rope is in a tensile state, the cam compresses the rope on a friction block to brake the rope; the handle is arranged on the handle base, the handle sequentially comprises a first rotating section and a second rotating section from the initial position to the final position, when the handle rotates to pass through the first rotating section, the handle rotates upwards relative to the handle base to avoid misoperation of the handle by an operator, when the handle rotates to pass through the second rotating section, the handle drives the handle base to rotate relative to the base to drive the cam to rotate to loosen the rope, and then the rope is braked, so that panic of a user is avoided. The utility model has reasonable structure and adjustable handle placement position, and is beneficial to reducing misoperation.

Description

Automatic control drop protector with prevent maloperation

Technical Field

The utility model relates to the technical field of equipment for scenes such as fire rescue, outdoor exercises, high-altitude operations and the like, in particular to an automatic stop and drop protector with misoperation prevention function.

Background

The traditional steel hoist hook descending protector, the splayed ring descending protector, the porous descending protector and the like need to be knotted, then window overturning escape is carried out, valuable escape self-rescue time is wasted, the traditional descending protector needs to hold the free rope end by hand in the descending process to apply pressure to control the descending speed, and the mode not only fatigues people, but also can cause incorrect operation even falling; in the prior art, a descending protector provided with a handle is also arranged, one end of the rope is fixed, the other end of the rope is released through the descending protector, the gravity of a human body is applied to the descending protector, and the switching of a brake rope, a releasing rope and the brake rope can be realized through an operation handle, so that frequent clamping and stopping caused by misoperation of a person in a tension state are avoided, the self-rescue time is wasted, the handle is taken as a control rod, on one hand, the misoperation is further avoided, the mistaken touch when the handle is close to the human body is avoided, in the actual use process, particularly in the emergency situation, a user frequently swings the handle greatly, the frequent and rapid switching of a locking rope and a releasing rope is further caused, and the valuable self-rescue time is further delayed.

Disclosure of Invention

The utility model discloses an automatic control drop protector with an anti-misoperation function, which solves the technical problems that a handle is easy to operate by mistake and is easy to be blocked frequently in emergency in the prior art, and has the technical effects of reasonable structure, adjustable handle placement position and contribution to reducing misoperation. The technical scheme adopted is as follows:

an automatic stop descent protector with an anti-panic function, comprising

The base is fixedly provided with a friction block, and is provided with a first through hole for attaching a hook;

the cam is hinged on the base through a cam pin, a second torsion spring is sleeved at the hinged position of the cam and the base to provide restoring force for the cam, and when the rope is in a tension state, the cam compresses the rope on the friction block to brake the rope;

the handle base is rotatably connected with the base;

the handle is arranged on the handle base, the handle comprises a first rotating section and a second rotating section in sequence from an initial position to a final position, when the handle rotates to pass through the first rotating section, the handle rotates upwards relative to the handle base so as to avoid an operator from touching the handle by mistake and directly loosening a rope, and when the handle rotates to pass through the second rotating section, the handle drives the handle base to rotate relative to the base so as to drive the cam to rotate to loosen the rope and then brake the rope, thereby avoiding the user from generating panic.

On the basis of the technical scheme, the cam is vertically and fixedly connected with a first guide post, the first guide post penetrates through a first arc-shaped hole on the base, the circle center of the first arc-shaped hole is on the rotation axis of the cam, when the first guide post moves in the first arc-shaped hole from a first end to a second end, the cam can be followed to switch from a braking rope to a releasing rope, and the tail end of the first guide post extending to the first arc-shaped hole is coaxially and fixedly connected with a roller; the handle base is rotationally connected with a push block, the handle base is fixedly connected with a limiting pin, the first end of the push block is fixedly connected with the handle base through an elastic piece, the second end of the push block is laterally abutted against the roller, the limiting pin is close to the first end of the push block and is abutted against the push block, when the handle rotates to pass through the second rotating section, the push block drives the roller to slide from the first end of the first arc hole to the second end and then separate from the roller, and the roller returns to the first end under the action of rope tension, so that the switching from a cam brake rope to a brake rope is completed.

On the basis of the technical scheme, the novel handle comprises a handle base, a holding groove is formed in the handle base, the holding groove is formed in the bottom surface of the holding groove, the holding groove is connected with the bottom surface of the holding groove, and the holding groove is connected with the bottom surface of the holding groove.

On the basis of the technical scheme, the handle is provided with the weight-reducing groove, and the arc axis of the weight-reducing groove is positioned on the extension line of the arc axis of the arc groove.

On the basis of the technical scheme, the novel handle comprises a handle base, and is characterized by further comprising a first torsion spring, wherein a handle shaft is vertically and fixedly arranged on the base, an end cover is vertically and fixedly connected to the handle shaft through the handle base, the first torsion spring is sleeved outside the handle shaft, one end of the first torsion spring is fixedly connected with the end cover, and the other end of the first torsion spring is fixedly connected with the handle base so that the handle can rotate towards the first rotating section in the second rotating section.

On the basis of the technical scheme, when the handle rotates to the final position, the first torsion spring has a restoring force for driving the push block to restore to the initial position under the action of no external force.

On the basis of the technical scheme, the base is provided with the second arc-shaped hole, and the handle base is vertically and fixedly provided with the second guide post which can extend into the second arc-shaped hole so as to limit the rotation angle of the handle at the second rotation section.

On the basis of the technical scheme, when the handle starts to rotate in the second rotating section, the second guide post is in contact with the first inner side wall of the second arc-shaped hole, and when the handle rotates to be close to the second inner side wall of the second arc-shaped hole, the cam releases the rope again to return to the working state.

On the basis of the technical scheme, the novel rope-passing device further comprises a cover plate, wherein the cover plate is arranged opposite to the base and is arranged on two sides of the cam respectively, one end of the cover plate is hinged with the base, and the other end of the cover plate is clamped with the base to open or close a rope-passing channel for placing a rope.

On the basis of the technical scheme, the wall surface of the rope passing channel formed by the cam and the friction block is provided with the wear-resistant layer.

Advantageous effects

The utility model has reasonable structure, the handle comprises a first rotating section and a second rotating section in the rotating process from the initial position to the final position, when the handle rotates through the first rotating section, the handle rotates upwards to avoid the misoperation of operators touching the handle, so that even if a human body mistakenly touches and rotates the handle in the using process, the sudden rope release is not caused, the panic is avoided in the descending process, the frequent clamping of the misoperation handle in the panic state is avoided, in addition, when the handle is in the initial position, the handle is clamped with the handle base through the collision bead, the positioning performance is good, on one hand, the handle can be positioned to avoid easy rotation, and on the other hand, the arrangement of the collision bead can prompt the user in the operation process, thereby being beneficial to reducing the probability of no operation of the operators under the emergency condition. In addition, the arc-shaped groove and the weight-reducing groove are arranged at the handle, so that the structure is reasonable, and torque balance is realized at the handle.

When the handle rotates through the second rotating section, the handle drives the handle base to rotate relative to the base so as to drive the cam to rotate and release the loose rope and then brake the rope, thereby avoiding the user from generating panic; the handle can be rotated through the second rotating section, on one hand, the rope can be released, the first torsion spring can be continuously applied with force, when the handle rotates to the tail position, the first torsion spring can drive the handle to reset under the action of no external force, the user can use the handle to experience good feeling, and misoperation caused by misjudgment of the position of the handle when the user operates next time is avoided. In addition, the device also comprises a second arc hole for limiting the rotation angle of the handle at the second rotating section, so that the safety is good, and the failure of the descending protector caused by misoperation of a user is avoided.

The utility model also comprises a cover plate hinged with the base, which is beneficial to ensuring the neat appearance and conveniently placing ropes, and in addition, the part of the rope passing channel formed by the cam and the friction block is prevented from being provided with a wear-resistant layer, which is beneficial to prolonging the service life of the product.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is apparent that the drawings in the following description are only one embodiment of the present utility model, and that other embodiments of the drawings may be derived from the drawings provided without inventive effort for a person skilled in the art.

Fig. 1: the three-dimensional structure schematic diagram of the utility model after the end cover is removed;

fig. 2: the three-dimensional structure schematic diagram after the cover plate is removed when the handle is positioned at the initial position to brake the rope in the use state;

fig. 3: the handle is in a structure schematic diagram when rotating through the first rotating section in a use state;

fig. 4: the handle is rotated through the second rotating section in the use state;

fig. 5: the explosion structure of the utility model is shown as a first schematic diagram;

fig. 6: the explosion structure of the utility model is shown in the second schematic diagram;

fig. 7: a side view of the handle is structurally and schematically shown in the utility model;

fig. 8: a schematic structural view of the handle when the handle does not drive the handle base to rotate around the handle shaft;

fig. 9: a first structural schematic diagram of the handle shaft driving the second guide post on the handle base to displace in the second arc hole;

fig. 10: a second structural schematic diagram of the handle shaft driving the second guide post on the handle base to displace in the second arc hole;

fig. 11: a structural schematic drawing of the displacement of the second guide post in the second arc-shaped hole when the handle rotates to a near-end position;

Detailed Description

The following description and the drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in, or substituted for, those of others. The scope of the embodiments herein includes the full scope of the claims, as well as all available equivalents of the claims. The terms "first," "second," and the like herein are used merely to distinguish one element from another element and do not require or imply any actual relationship or order between the elements. Indeed the first element could also be termed a second element and vice versa. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such structure, apparatus, or device. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a structure, apparatus or device comprising the element. Various embodiments are described herein in a progressive manner, each embodiment focusing on differences from other embodiments, and identical and similar parts between the various embodiments are sufficient to be seen with each other.

The terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein refer to an orientation or positional relationship based on that shown in the drawings, merely for ease of description herein and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus are not to be construed as limiting the utility model. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanically or electrically coupled, may be in communication with each other within two elements, may be directly coupled, or may be indirectly coupled through an intermediary, as would be apparent to one of ordinary skill in the art.

Herein, unless otherwise indicated, the term "plurality" means two or more.

Herein, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

Herein, the term "and/or" is an association relation describing an object, meaning that three relations may exist. For example, a and/or B, represent: a or B, or, A and B.

An automatic stop descent protector with anti-panic function as shown in FIGS. 1-11, comprising

The base 1, the friction block 2 is fixedly arranged above the base 1, in this embodiment, the friction block 2 is made of alloy steel, and the base 1 is provided with a first through hole 3 for attaching a hook;

the cam 4 is hinged on the base 1 through a cam pin 23, as shown in fig. 2, when the rope is in a tensile state and the handle 6 is positioned at an initial position, the cam 4 presses the rope on the friction block 2 to brake the rope, wherein a second torsion spring is sleeved outside the cam pin 23, one end of the second torsion spring is fixedly connected with the base 1, and the other end of the second torsion spring is fixedly connected with the cam 4, so that the cam 4 can be positioned to avoid shaking back and forth when the rope is pulled out; the wall surface of the rope passing channel formed by the cam 4 and the friction block 2 is provided with a wear-resistant layer.

The cover plate 19 is arranged opposite to the base 1 and is respectively arranged at two sides of the cam 4, as shown in fig. 5, one end of the cover plate 19 is hinged with the base 1 through a cover plate pin shaft 20, the other end of the cover plate 19 is clamped with the base 1 through an elastic pin assembly to open or close a rope passing channel for placing ropes, the elastic pin assembly comprises a button 21 and a spring, when the elastic pin assembly is clamped, the button 21 passes through the cover plate 19 and stretches into a slot hole of the base 1, the tail end of the button 21 stretching into the slot hole is abutted with the bottom surface of the slot through a compression spring, in addition, an axial long slot is formed in the side wall of the button 21, a jackscrew passes through the base 1 and stretches into the long slot to limit the axial sliding of the button 21, and as shown in fig. 6, the outer end surface of the button 21 is an inclined surface, and the outer end surface of the button 21 is in smooth transition with the side surface of the button, so that the operation is convenient; the user presses the button 21 and the cover plate 19 is released and rotated with respect to the base 1 to open the rope passing passage.

A handle base 5, the handle base 5 being rotatably connected with the base 1;

the rotatable handle 6, one end of the handle 6 is sleeved on the handle base 5 and is rotationally connected with the handle base 5 through a bearing 7, as shown in fig. 2-4, the rotation process of the handle 6 from the initial position to the final position sequentially comprises a first rotation section and a second rotation section, as shown in fig. 3, when the handle 6 rotates through the first rotation section, the handle 6 rotates upwards relative to the handle base 5 so as to avoid misoperation of the handle by an operator, and even if the user mistakenly touches the handle 6 in the first rotation section, the descent protector does not suddenly loosen a rope, so that the use safety is good and the occurrence of panic is avoided; specifically, as shown in the figure, the end surface of the handle 6 facing the handle base 5 comprises an arc-shaped groove 61 and a weight-reducing groove 62 which are independent, wherein the arc axis of the weight-reducing groove 62 is on the extension line of the arc axis of the arc-shaped groove 61, which is beneficial to ensuring the moment balance of the handle 6, and the central angle corresponding to the arc-shaped groove 61 is consistent with the angle of the handle 6 rotating through the first rotating section; the spring ball 8 is partially embedded in the slot hole of the handle base 5 and is connected with the bottom surface of the slot hole through an elastic piece, the slot wall surface forming the slot hole extends outwards to form the sleeve 9, when the handle 6 is at the initial position, the spring ball can extend into the accommodating groove on the handle 6 to position the handle 6, meanwhile, when the handle 6 rotates through the first rotating section under the action of external force, the spring ball 8 is separated from the accommodating groove and slides to the tail end of the arc groove 61 in the arc groove 61, and at the moment, the side wall of the sleeve 9 is clamped with the handle base 5 of the arc groove 61 so as to drive the handle base 5 to rotate when the handle 6 further rotates.

As shown in fig. 5 and 6, the handle comprises a handle base 5, a handle shaft 22 is vertically fixed on the base 1, and an end cover 11 is vertically and fixedly connected to the handle shaft 22 through the handle base 5, wherein the handle shaft 22 is rotatably connected with the handle base 5, the handle shaft 22 is sleeved with the first torsion spring 10, one end of the first torsion spring 10 is clamped into a groove on the inner wall surface of the end cover 11 to be fixedly connected with the end cover 11, the other end of the first torsion spring 10 is fixedly connected with the handle base 5, and when the handle 6 completes the further rotation of the first rotating section and drives the handle base 5 to rotate, a force is applied to the first torsion spring 10 to enable the handle 6 to have a restoring force from the second rotating section to the first rotating section.

As shown in fig. 3 and 4, when the handle 6 rotates through the second rotation section, the handle 6 drives the handle base 5 to rotate relative to the base 1, so as to drive the cam 4 to rotate to release the rope and then brake the rope, thereby avoiding the user from being panicked. As shown in fig. 5, the cam 4 is vertically and fixedly connected with a first guide post 12, the first guide post 12 passes through a first arc-shaped hole 13 on the base 1, the center of the first arc-shaped hole 13 is on the rotation axis of the cam 4, when the first guide post 12 moves in the first arc-shaped hole 13 from the first end to the second end, the cam 4 can be followed to switch from a brake rope to a release rope, and the tail end of the first guide post 12 extending to the first arc-shaped hole 13 is coaxially and fixedly connected with a roller 14; as shown in fig. 8 to 11, the handle base 5 is rotatably connected with a push block 15, and the handle base 5 is fixedly connected with a limit pin 16, a first end of the push block 15 is fixedly connected with the handle base 5 through an elastic member, in this embodiment, the elastic member is a spring, a side wall of a second end of the push block 15 is an arc surface, the arc surface of the push block 15 is laterally abutted with the roller 14, the limit pin 16 is disposed near the first end of the push block 15 and is laterally abutted with the push block 15, when the handle 6 rotates through a second rotation section, the push block 15 drives the roller 14 to slide from the first end to the second end of the first arc hole 13 and then separate from the roller 14, meanwhile, the rotation of the cam 4 is switched from the brake rope to the release rope, and then the cam 4 returns to the initial position under the action of the first arc hole 13, so that the handle 6 rotates through the second rotation section, the action of the cam 4 is driven to complete the switching from the brake rope to the brake rope, and the user is prevented from being panic.

As shown in fig. 5 and 6, the base 1 is provided with a second arc hole 17, and the handle base 5 is vertically and fixedly provided with a second guide post 18 that can extend into the second arc hole 17, so as to limit the rotation angle of the handle 6 at the second rotation section, prevent the rotation angle of the handle 6 from falling out of the set range due to overlarge force of a user, and facilitate reducing misoperation. Further, when the handle 6 starts to rotate in the second rotation section, the second guide post 18 contacts with the first inner side wall of the second arc hole 17 under the action of the first torsion spring 10, and when the handle 6 rotates to be close to the second inner side wall of the second arc hole 17, the cam 4 re-brakes the rope to return to the working state, so that when the second guide post 17 runs out of the second arc hole 17, the cam 4 brakes the rope, and the relatively large degree of processing errors of the first arc hole 13 and the second arc hole 17 is favorable for containing.

As shown in fig. 4 and 11, when the handle 6 rotates to the final position, the push block 15 is separated from the roller 14, and after the handle 6 is released by a human hand, the handle base 5 drives the push block 15 to reset under the action of the first torsion spring 10, and in this process, the push block 15 avoids the roller 14 to reset to the initial position, so that automatic reset can be realized, the operation consistency is good, and the first torsion spring 10 enables a user to have good hand feeling in operation, that is, when the handle 6 rotates through the second rotating section, the resistance of the handle is gradually increased, and the user can be prompted that the handle 6 rotates to approach the limit position of the rotating end.

Working process

As shown in fig. 2, the handle is in the initial position, and the cam 4 presses the rope against the friction block 2 to brake the rope;

as shown in fig. 3, the user applies force to rotate the handle 6 through the first rotation section, the sleeve 9 outside the ball 8 contacts the side wall of the end of the arcuate slot 61 as shown in fig. 7;

as shown in fig. 4, the user further applies force to rotate the handle 6 through the second rotating section, under the pushing of the sleeve 9, the handle 6 drives the handle base 5 to rotate synchronously, meanwhile, the first torsion spring 10 is stressed, as shown in fig. 8-10, when the second guide post 18 displaces in the second arc hole 17 for the majority of the axial length of the second guide post, the push block 15 pushes the roller 14 to displace in the first arc hole 13 from the first end to the second end, at this time, the cam 4 is switched from being close to the friction block 2 to being far from the friction block 2, namely, the switching from the brake rope to the releasing rope is completed, when the second guide post 18 continues to displace in the second arc hole 17, the push block 15 is separated from the roller 14, and then the rope of the roller 14 falls back to the first end of the first arc hole 13 under the pulling force of the rope, the cam 4 brakes the rope again, as shown in fig. 11, when the second guide post 18 is displaced to the extreme end in the second arc hole 17, the handle 6 is limited, at this time, the first torsion spring 10 is stressed most, at this time, if the user no longer applies force to the handle 6, under the action of the first torsion spring 10, the handle base 5 is reset to the initial position shown in fig. 2, meanwhile, the push block 15 dodges the roller 14 and resets to the initial position, and likewise, the handle 6 is reset to the position shown in fig. 3 under the drive of the arm base 5, at this time, the user needs to apply force to rotate the handle 6 anticlockwise to reset the handle 6 to the initial position, and when the handle 6 is reset to the initial position shown in fig. 2, the latch bead 8 is blocked into the slot hole to give out a prompt sound.

The present utility model has been described above by way of example, but the present utility model is not limited to the above-described embodiments, and any modifications or variations based on the present utility model fall within the scope of the present utility model.

Claims (10)

1. An automatic system down protector with prevent maloperation, its characterized in that: comprising

The friction block (2) is fixedly arranged on the base (1), and a first through hole (3) with an additional hook is formed in the base (1);

the cam (4) is hinged on the base (1) through a cam pin (23), a second torsion spring is sleeved at the hinge position of the cam (4) and the base (1) to provide restoring force for the cam (4), and when the rope is in a tensile state, the cam (4) presses the rope on the friction block (2) to brake the rope;

the handle base (5), the said handle base (5) connects with base (1) rotatably;

rotatable handle (6), handle (6) are located on handle base (5), the rotation process of handle (6) from initial position to final position includes first section of rotating and second section of rotating in proper order, works as when handle (6) rotate through first section of rotating, handle (6) are upwards rotated in order to avoid operating personnel to touch handle (6) by mistake, avoid directly loosening the rope, works as when handle (6) rotate through second section of rotating, handle (6) drive handle base (5) are rotatory relative to base (1) to order about cam (4) rotatory back brake rope of loosening the rope, avoid the user to produce panic.

2. The automatic stopping and descending protector with misoperation prevention according to claim 1 is characterized in that a first guide post (12) is vertically fixedly connected with the cam (4), the first guide post (12) penetrates through a first arc-shaped hole (13) on the base (1), the center of the first arc-shaped hole (13) is on the rotation axis of the cam (4), and when the first guide post (12) moves in the first arc-shaped hole (13) from the first end to the second end, the cam (4) can be followed to switch from a braking rope to a releasing rope, and a roller (14) is coaxially fixedly connected at the tail end of the first guide post (12) extending to the first arc-shaped hole (13); the novel brake device is characterized in that a push block (15) is rotationally connected to the handle base (5), a limiting pin (16) is fixedly connected to the handle base (5), a first end of the push block (15) is fixedly connected with the handle base (5) through an elastic piece, a second end of the push block (15) is laterally abutted to the roller (14), the limiting pin (16) is arranged close to the first end of the push block (15) and is abutted to the push block (15), when the handle (6) rotates to pass through a second rotating section and drives the handle base (5) to rotate, the roller (14) is driven by the push block (15) to slide from the first end to the second end of the first arc-shaped hole (13) and then is separated from the roller (14), and the roller (14) returns to the first end under the action of a pulling force after the push block (15) is separated from the roller (14) so as to complete switching from a braking rope of the cam (4) to the braking rope.

3. The automatic stop-and-drop protector with misoperation prevention according to claim 1 or 2 further comprising a stop bead (8), wherein the stop bead (8) is partially embedded in a slot hole of the handle base (5) and is connected with the bottom surface of the slot hole through an elastic piece, when the handle (6) is in an initial position, the stop bead (8) can extend into a containing groove on the handle (6) to position the handle (6), and when the handle (6) rotates through a first rotating section, the stop bead (8) is separated from the containing groove and slides in an arc groove (61) on the handle (6) to be clamped with the handle base (5).

4. An automatic drop down protector with anti-mishandling according to claim 3, characterized in that the handle (6) is provided with a weight-reducing groove (62), the arc axis of the weight-reducing groove (62) being on the extension of the arc axis of the arc groove (61).

5. The automatic stopping and descending protector with misoperation prevention according to claim 3 further comprising a first torsion spring (10), wherein a handle shaft (22) is vertically fixed on the base (1), the handle shaft (22) penetrates through the handle base (5) and is vertically fixedly connected with an end cover (11), the first torsion spring (10) is sleeved outside the handle shaft (22), one end of the first torsion spring (10) is fixedly connected with the end cover (11), and the other end of the first torsion spring (10) is fixedly connected with the handle base (5) so that the handle (6) has a restoring force rotating towards the first rotating section in the second rotating section.

6. The automatic drop down protector with misoperation prevention according to claim 5 characterized in that the first torsion spring (10) has a restoring force to drive the push block to the initial position without external force when the handle (6) is rotated to the final position.

7. The automatic stopping and descending protector with misoperation prevention according to claim 5 is characterized in that a second arc-shaped hole (17) is formed in the base (1), and a second guide post (18) which can extend into the second arc-shaped hole (17) is vertically and fixedly arranged on the handle base (5) so as to limit the rotation angle of the handle (6) in a second rotation section.

8. An automatic drop protector with protection against mishandling according to claim 7, characterized in that the second guiding stud (18) is in contact with the first end inner side wall of the second arcuate hole (17) when the handle (6) starts to rotate in the second rotation section, and that the cam (4) re-brakes the rope back to the working state when the handle (6) rotates close to the second end inner side wall of the second arcuate hole (17).

9. The automatic stop-and-drop protector with misoperation prevention according to claim 3, further comprising a cover plate (19), wherein the cover plate (19) is arranged opposite to the base (1) and is respectively arranged on two sides of the cam (4), one end of the cover plate (19) is hinged with the base (1), and the other end of the cover plate (19) is clamped with the base (1) to open or close a rope passing channel for placing ropes.

10. The automatic stop-and-go protector with misoperation prevention according to claim 9, characterized in that the wall surface of the rope passage formed by the cam (4) and the friction block (2) is provided with a wear-resistant layer.