CN210020908U - A speed difference fall arrester - Google Patents

Abstract

The utility model provides a speed difference anti-drop device, which belongs to the field of anti-drop devices. It solves the problem of easy wear of the pawl shaft when the pawl shaft of the anti-drop device slides in the slot, and the like. A speed difference anti-drop device has a rotating rope winding device and a safety rope in the shell, one end of the safety rope and the rotating rope. The other end is connected to the outside of the casing, and the end is connected to the human body. The rotating rope winding device allows the safety rope to freely expand and contract when the operator moves. There is a locking device on the rotating rope winding device to prevent the operator from continuing. The locking device includes a sliding plate and a pawl shaft arranged on the sliding plate. The sliding plate is provided with a chute, the chute is used to make the pawl shaft slide in the chute, and the pawl shaft sleeve is provided with a protective sleeve. The pawl shaft can slide in the chute, the pawl shaft is connected with a pawl that rotates around the pawl axis, a ratchet tooth is arranged in the casing, the pawl is used for engaging with the ratchet tooth, and a lifting ring for fixing is arranged on the top of the casing . The utility model can well protect the pawl shaft.

Description

A speed difference fall arrester

technical field

The utility model belongs to the field of anti-dropping devices, in particular to a speed-difference anti-dropping device.

Background technique

The differential fall arrester is a safety protection device specially designed for high-altitude falls. Its working principle is to use the speed difference of the falling object for automatic control. The speed difference type fall arrester is mainly composed of a lifting ring, a shell and a safety rope. When in use, the lifting ring at one end of the shell is hung on the structure, and one end of the safety rope is connected to the operator.

If the operator accidentally falls from a height, because the falling speed is too fast, the speed difference type fall arrester will immediately activate the locking mechanism to lock the safety rope to prevent the operator from continuing to fall. The general speed difference type fall arrester uses elastically retracted pawls to connect to the rotating plate and cooperate with the fixed plate. When the operator accidentally falls and the safety rope is quickly pulled down, the pawl is centrifugally thrown away and stuck. Hold and fix the inner gear plate to stop the rotation of the rotating plate to prevent people from falling. Due to the fast descending speed, the pawl stops descending immediately after the inner tooth plate is caught, which has no buffer for the operator and will cause certain damage to the human body. The grooves can be used for buffering and reduce damage to the human body. However, when the pawl shaft slides in the groove, the pawl shaft is easily worn, which affects the service life of the pawl shaft.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a speed difference anti-drop device for the above problems existing in the prior art.

The purpose of the utility model can be achieved by the following technical solutions: a speed difference fall arrester, which is characterized in that it includes a casing, and the casing is provided with a rotating rope winding device and a safety device wound on the rotating rope winding device. One end of the safety rope is connected with the rotating rope winding device, the other end of the safety rope is passed out to the outside of the casing, the end of the safety rope is used to connect with the human body, and the rotating rope winding device is used for When the safety rope moves freely with the operator, a locking device is provided on the rotating rope winding device. The locking device is used to lock the safety rope to prevent the operator from continuing to fall. The locking device It includes a sliding plate and a pawl shaft arranged on the sliding plate. The sliding plate is provided with a chute, and the chute is used to make the pawl shaft slide in the chute, and the pawl shaft is sleeved with There is a protective cover, the pawl shaft can slide in the chute, the pawl shaft is connected with a pawl that rotates around the pawl axis, the shell is provided with ratchet teeth, and the pawl is used for In order to be engaged with the ratchet, the top of the casing is provided with a lifting ring for fixing.

The working principle of the utility model: when the anti-drop device is working, the anti-drop device is fixed by the hanging ring, the safety rope is pulled out from the anti-drop device and tied to the human body, and the rotating rope winding device can be freely retracted and locked when the operator works and moves. The device can lock the safety rope to prevent the operator from continuing to fall. When the operator accidentally falls from a high altitude, the descending speed becomes faster, the speed at which the safety rope is pulled out also becomes faster, and the locking device is activated. Instead of being stuck immediately, the pawl shaft first slides in the chute to the other end of the chute, and then the rope winding device is completely fixed and stops descending, which acts as a buffer and reduces damage to the human body. The protective sleeve can protect the pawl shaft, reduce the wear of the pawl shaft, and increase the service life of the pawl shaft.

In the above-mentioned speed difference fall arrester, the protective cover is made of metal material.

In the above-mentioned speed difference safety device, the protective sleeve is located at the sliding connection between the chute and the pawl shaft.

In the above-mentioned speed difference safety device, the sliding plate is divided into an upper plate and a lower plate, the upper plate and the lower plate are connected by a connecting piece, and the chute is located on the upper plate and the lower plate On the top, the pawl shaft penetrates the chute of the upper plate and the chute of the lower plate.

In the above-mentioned speed difference safety device, a permanent magnet is further arranged on the sliding plate, and the permanent magnet is used for adsorbing the pawl.

In the above-mentioned speed difference fall arrester, a belt outlet is provided at the bottom of the casing, and the belt outlet is used for the extension of the safety rope.

In the above-mentioned buffer type speed difference fall arrester, the belt outlet is provided with a wear-resistant layer, and the wear-resistant layer is used to prevent the safety rope from being worn.

In the above-mentioned speed difference safety device, the anti-wear layer is made of flexible material.

In the above-mentioned buffer-type speed difference fall arrester, the end of the safety rope is connected with a lock catch, and the lock catch is used to be fastened with a safety belt wrapped around the human body.

Compared with the prior art, the utility model has the following advantages:

1. The protective cover of the present invention can well protect the pawl shaft to prevent it from being worn, and increases the service life of the pawl shaft.

2. A permanent magnet is also arranged on the sliding plate of the utility model, and the permanent magnet is used for adsorbing the pawl. When the safety rope is used normally and the operator does not fall from a height, the permanent magnet attracts the pawl so that the pawl will not engage with the ratchet, and the safety rope can be freely retracted. And when the use is finished, the permanent magnet can absorb the pawl to reset it.

3. A belt outlet is provided at the bottom of the casing of the utility model, and the belt outlet is used to extend the safety rope. The belt outlet is provided with an anti-wear layer, and the anti-abrasion layer is used to prevent the safety rope from being worn. The wear layer is made of flexible material. In the process of using the safety rope, the wear of the safety rope may be caused, and the wear-resistant layer made of a flexible material such as rubber can effectively prevent the safety rope from wearing.

Description of drawings

Fig. 1 is the structural representation of the present utility model;

Fig. 2 is the structural representation inside the shell of the present utility model;

Fig. 3 is the structural representation of the rotary rope winding device of the present invention;

Fig. 4 is the structural representation of the locking device of the present invention;

Fig. 5 is the structural representation of the protective cover of the present utility model;

Fig. 6 is the structural representation of the sliding plate of the present utility model;

Fig. 7 is the structural representation of the ratchet tooth of the present utility model;

FIG. 8 is a schematic diagram of the structure of the belt outlet of the present invention.

In the figure, 1, the housing; 2, the rotary rope winding device; 3, the safety rope; 4, the locking device; 5, the sliding plate; 6, the pawl shaft; 7, the chute; 8, the pawl; 9, the ratchet Tooth; 10, lifting ring; 15, upper plate; 16, lower plate; 17, connecting piece; 18, protective cover; 20, permanent magnet; 29, belt outlet; 30, anti-wear layer; 32, lock.

Detailed ways

The following are specific embodiments of the present utility model combined with the accompanying drawings to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, a speed difference fall arrester includes a casing 1, and a rotating rope winding device is arranged in the casing 1 2 and the safety rope 3 wound on the rotating rope reeling device 2, one end of the safety rope 3 is connected to the rotating rope reeling device 2, the other end of the safety rope 3 goes out to the outside of the housing 1, and the end of the safety rope 3 is used for connecting with the human body Connection, the rotating rope winding device 2 is used to make the safety rope 3 freely expand and contract when the operator works and move, and a locking device 4 is arranged on the rotating rope winding device 2, and the locking device 4 is used to lock the safety rope 3 to prevent the operator from continuing to fall. , the locking device 4 includes a sliding plate 5 and a pawl shaft 6 arranged on the sliding plate 5. The sliding plate 5 is provided with a chute 7, and the chute 7 is used to make the pawl shaft 6 slide in the chute 7. The pawl shaft 6 is sleeved with a protective sleeve 18, the pawl shaft 6 can slide in the chute 7, the pawl shaft 6 is connected with a pawl 8 that rotates around the pawl shaft 6, and the housing 1 is provided with a ratchet tooth 9, The pawl 8 is used for engaging with the ratchet 9, and the top of the housing 1 is provided with a lifting ring 10 for fixing.

In further detail, the protective cover 18 is made of metal material. The protective sleeve 18 can well protect the pawl shaft 6 from being worn, thereby increasing the service life of the pawl shaft 6 .

In further detail, the protective sleeve 18 is located at the sliding connection between the chute 7 and the pawl shaft 6 .

In further detail, the sliding plate 5 is divided into an upper plate 15 and a lower plate 16, the upper plate 15 and the lower plate 16 are connected by a connecting piece 17, the chute 7 is located on the upper plate 15 and the lower plate 16, and the pawl shaft 6 penetrates through The chute 7 of the upper disc 15 and the chute 7 of the lower disc 16.

In further detail, a permanent magnet 20 is also provided on the sliding plate 5 , and the permanent magnet 20 is used for attracting the pawl 8 . When the safety rope 3 is used normally and the operator does not fall from a height, the permanent magnet 20 attracts the pawl 8 so that the pawl 8 does not engage with the ratchet teeth 9, and the safety rope 3 can be freely retracted. And when the use is finished, the permanent magnet 20 can absorb the pawl 8 to reset it.

In more detail, the bottom of the housing 1 is provided with a belt outlet 29 , and the belt outlet 29 is used for the extension of the safety rope 3 . The belt outlet 29 is provided with a wear-resistant layer 30 , and the wear-resistant layer 30 is used to prevent the safety rope 3 from being worn. The wear layer 30 is made of a flexible material. During the use of the safety rope 3, the safety rope 3 may be worn, and the wear-resistant layer 30 made of a flexible material such as rubber can effectively prevent the safety rope 3 from being worn.

More specifically, the end of the safety rope 3 is connected with a lock 32, and the lock 32 is used to fasten the safety belt wrapped around the human body.

The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or replace them in similar ways, but will not deviate from the spirit of the present invention or go beyond the appended claims the defined range.

Although the housing 1 , the rotating rope winding device 2 , the safety rope 3 , the locking device 4 , the sliding plate 5 , the pawl 8 , the shaft 6 , the chute 7 , the pawl 8 , the ratchet tooth 9 , the lifting ring 10 are used more in this paper , upper plate 15, lower plate 16, connecting piece 17, protective sleeve 18, permanent magnet 20, belt outlet 29, anti-wear layer 30, lock 32 and other terms, but the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; it is contrary to the spirit of the present invention to interpret them as any kind of additional limitations.

Claims (9)

1. A speed difference fall arrester, characterized in that it comprises a casing (1), and the casing (1) is provided with a rotary rope winding device (2) and is wound on the rotary rope winding device (2). The safety rope (3), one end of the safety rope (3) is connected with the rotating rope winding device (2), and the other end of the safety rope (3) is pierced to the outside of the housing (1), the safety The end of the rope (3) is used to connect with the human body, and the rotating rope winding device (2) is used to make the safety rope (3) expand and contract freely when the operator moves. A locking device (4) is provided, the locking device (4) is used for locking the safety rope (3) to prevent the operator from continuing to fall, and the locking device (4) comprises a sliding plate (5) and a The pawl shaft (6) on the sliding plate (5), the sliding plate (5) is provided with a sliding groove (7), and the sliding groove (7) is used to make the pawl shaft (6) slide on the sliding plate (5). sliding in the groove (7), the pawl shaft (6) is sleeved with a protective sleeve (18), the pawl shaft (6) can slide in the chute (7), and the pawl shaft (6) can slide in the chute (7). (6) A ratchet (8) that rotates around the ratchet shaft (6) is connected, the housing (1) is provided with a ratchet (9), and the ratchet (8) is used to communicate with the ratchet. (9) Engagement, the top of the casing (1) is provided with a lifting ring (10) for fixing. 2 . The speed difference fall arrester according to claim 1 , wherein the protective cover ( 18 ) is made of metal material. 3 . 3 . The speed difference safety device according to claim 1 , wherein the protective cover ( 18 ) is located at the sliding connection between the chute ( 7 ) and the pawl shaft ( 6 ). 4 . 4. A speed difference crash arrester according to claim 2, wherein the sliding plate (5) is divided into an upper plate (15) and a lower plate (16), and the upper plate (15) ) and the lower plate (16) are connected by a connecting piece (17), the chute (7) is located on the upper plate (15) and the lower plate (16), and the pawl shaft (6) penetrates the upper plate (15) of the chute (7) and the chute (7) of the lower plate (16). 5. A speed difference safety device according to claim 1, characterized in that, a permanent magnet (20) is also provided on the sliding disc (5), and the permanent magnet (20) is used for adsorption Pawl (8). 6 . The speed difference crash arrester according to claim 1 , wherein a belt outlet ( 29 ) is opened at the bottom of the casing ( 1 ), and the belt outlet ( 29 ) is used for safety. 7 . The extension of the rope (3). 7 . The speed difference safety device according to claim 6 , wherein the belt outlet ( 29 ) is provided with an anti-wear layer ( 30 ), and the anti-wear layer ( 30 ) is used for Prevent the safety rope (3) from being worn. 8 . The speed difference safety device according to claim 7 , wherein the anti-wear layer ( 30 ) is made of a flexible material. 9 . 9 . The speed difference fall arrester according to claim 1 , wherein a lock is connected to the end of the safety rope, and the lock is used to be fastened with a safety belt wrapped around the human body. 10 .

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