CN210002929U - A buffer type speed difference fall arrester - Google Patents

Abstract

The utility model provides a buffer type speed difference anti-drop device, which belongs to the field of anti-drop devices. The utility model solves the problems that the existing anti-drop device has no buffer for the operator and will cause certain damage to the human body. It is connected with the rotating rope winding device, and the other end goes out of the casing. The end of the safety rope is used to connect with the human body. The rotating rope winding device is used to make the safety rope retract freely when the operator moves. A locking device is provided. The locking device is used to lock the safety rope to prevent the operator from continuing to fall. The locking device includes a sliding plate and a pawl shaft arranged on the sliding plate. The chute slides, 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 suspension ring is arranged on the top of the casing. The utility model can play a buffering role.

Description

A buffer type speed difference fall arrester

technical field

The utility model belongs to the field of anti-dropping devices, in particular to a buffer type 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 device 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. Since the descending speed is very fast, the pawl stops descending immediately after the inner toothed plate is caught, there is no buffer for the operator, and there will be some damage to the human body.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a buffer type speed difference fall arrester in view of the above problems existing in the prior art.

The purpose of the utility model can be achieved by the following technical solutions: a buffer type 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 is wound on the rotating rope winding device. The safety rope, one end of the safety rope is connected with the rotating rope winding device, the other end of the safety rope goes 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 The device is used to make the safety rope freely expand and contract when the operator moves. The rotating rope winding device is provided with a locking device. The locking device is used to lock the safety rope to prevent the operator from continuing to fall. The lock The stop device includes a sliding plate and a pawl shaft arranged on the sliding plate, the sliding plate is provided with a chute, the pawl shaft can slide in the chute, and the pawl shaft is connected with a winding ratchet. For the pawl on which the pawl shaft rotates, the housing is provided with ratchet teeth, the pawl is used for engaging with the ratchet teeth, and the top of the housing is provided with a lifting ring for fixing.

The working principle of the utility model: when the anti-fall 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 when the operator moves, and the lock The stop 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.

In the above-mentioned buffer type speed difference safety device, the rotating rope winding device includes a rotating shaft and a rope winding drum sleeved on the outside of the rotating shaft, and one end of the rotating shaft is provided with a coil spring and a coil spring cover , the other end of the rotating shaft is connected with the sliding plate, and the coil spring is located on the side of the coil spring cover away from the sliding plate.

In the above-mentioned buffer type speed difference crash arrester, the chute is arc-shaped.

In the above-mentioned buffer-type speed difference crash arrester, the angle formed by the connecting line between the head and tail ends of the chute and the center of the sliding plate is 30°.

In the above-mentioned buffer type speed difference crash arrester, 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 between the upper plate and the lower plate. On the lower plate, the pawl shaft penetrates the chute of the upper plate and the chute of the lower plate, and the pawl shaft is sleeved with a protective sleeve, and the protective sleeve is used to protect the pawl shaft.

In the above-mentioned buffer type speed difference safety device, the ratchet pawl is provided with a clamping groove, and the clamping groove is used for fitting with the protrusion of the ratchet tooth.

In the above-mentioned buffer type 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 buffer type speed difference crash arrester, the casing is divided into an upper casing and a lower casing, and the upper casing and the lower casing are both provided with an inner cavity, and the inner cavity It is used for accommodating the rotating rope winding device and the locking device, the upper casing and the lower casing are connected by a connecting rod, and the ratchet teeth are located on the inner wall of the inner cavity of the lower casing.

In the above-mentioned buffer type speed difference crash arrester, the peripheral wall of the inner cavity and the outer wall of the casing are connected by reinforcing ribs, the reinforcing ribs are connected end to end, and the space between the reinforcing ribs and the casing is Triangular in shape.

In the above-mentioned buffer type speed difference fall arrester, the suspension ring is provided with a base and a pendant, the base and the pendant are connected by a connecting column, and the pendant is used to hang on a building, so The base and the connecting column are embedded in the casing, and the hanging piece, the connecting column and the base are integrally formed.

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

In the above-mentioned buffer-type speed difference fall arrester, the anti-wear layer is made of a flexible material.

In the above-mentioned buffer-type differential fall arrester, a hand-held portion is provided on one side of the safety rope outside the casing, and the hand-held portion is used for the operator to hold.

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 pawl shaft of the present utility model first slides in the chute to the other end of the chute and then makes the rope winding device be completely fixed, stop descending, play a buffering role, and reduce the damage to the human body.

2. The rotary rope winding device of the present invention comprises a rotary shaft and a rope winding drum sleeved on the outside of the rotary shaft. One end of the rotary shaft is provided with a coil spring and a coil spring cover, and the other end of the rotary shaft is connected with the sliding disc. Located on the side of the coil spring cover away from the slide plate. The rotating rope winding device can make the safety rope freely expand and contract when the operator moves, and the safety rope is wound on the rope winding drum. The axis of rotation rotates when telescopic.

3. The sliding plate of the present utility model is divided into an upper plate and a lower plate, the upper plate and the lower plate are connected by connecting pieces, the chute is located on the upper plate and the lower plate, and the pawl shaft penetrates the chute and the lower plate of the upper plate. The chute, the pawl shaft sleeve is provided with a protective sleeve, and the protective sleeve is used to protect the pawl shaft. The protective sleeve can well protect the pawl shaft from being worn. Generally, the protective sleeve is made of metal, such as copper. The pawl shaft does not slide in a single chute, but corresponds to the upper plate and the lower plate. When the pawl shaft slides, it slides in the chute of the upper plate and the lower plate at the same time, which makes the structure more stable.

4. The pawl of the present invention is provided with a card slot, which is used to fit with the protrusion of the ratchet. When the pawl and the ratchet teeth are engaged, the force point is mainly at the slot of the pawl, so that the pawl is not easily broken, which greatly improves the safety. Even the wear of the pawl does not affect the safety performance.

5. A permanent magnet is also arranged on the sliding plate of the present 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.

6. The shell of the utility model is divided into an upper shell and a lower shell. Both the upper shell and the lower shell are provided with an inner cavity, and the inner cavity is used to accommodate the rotating rope winding device and the locking device. The bodies are connected by connecting rods, and the ratchet teeth are located on the inner wall of the inner cavity of the lower casing. The peripheral wall of the inner cavity and the outer wall of the casing are connected by reinforcing ribs, the reinforcing ribs are connected end to end, and the gap between the reinforcing ribs and the casing is triangular. The reinforcing ribs strengthen the structural strength of the casing, make the casing more firm, and can effectively prevent the casing from breaking, and the gaps between the reinforcing ribs can reduce the weight of the casing itself.

7. The hoisting ring of the present utility model is provided with a base and a pendant, the base and the pendant are connected by a connecting column, the pendant is used to hang on the building, the base and the connecting column are embedded in the shell, and the pendant, the connecting column and the base are integrally formed. structure. The one-piece molding structure can effectively prevent it from breaking, which greatly increases the safety factor.

8. The bottom of the casing of the utility model is provided with a belt outlet, the belt outlet is used for the extension of the safety rope, and the belt outlet is provided with an anti-wear layer, which is used to prevent the safety rope from being worn. The wear-resistant layer is made of a flexible material, which may cause wear of the safety rope during the use of the safety rope, and the wear-resistant layer made of a flexible material such as rubber can effectively prevent the safety rope from wearing.

9. The safety rope of the present utility model is provided with a hand-held portion on one side outside the casing, and the hand-held portion is convenient for the operator to hold by hand. The design of the hand-held part is convenient for the operator to pull out the safety rope, which is convenient for the operator to use.

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 lower casing of the present invention;

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; 11, rotating shaft; 12, rope drum; 13, coil spring; 14, coil spring cover; 15, upper plate; 16, lower plate; 17, connecting piece; 18, protective sleeve; 19, Card slot; 20, permanent magnet; 21, upper shell; 22, lower shell; 23, inner cavity; 24, connecting rod; 25, reinforcing rib; 26, base; 27, pendant; 28, connecting column; 29, Belt outlet; 30, anti-wear layer; 31, hand-held part; 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 buffer type speed difference crash arrester includes a housing 1, and a rotating winding is arranged in the housing 1. The rope device 2 and the safety rope 3 wound on the rotating rope winding device 2. One end of the safety rope 3 is connected to the rotating rope winding device 2. It is used to connect with the human body. The rotating rope winding device 2 is used to make the safety rope 3 expand and contract freely when the operator moves. The rotating rope winding device 2 is provided with a locking device 4. The locking device 4 is used to lock the safety rope 3 to prevent The operator continues 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 pawl shaft 6 can slide in the chute 7. The shaft 6 is connected with a pawl 8 that rotates around the pawl shaft 6 , a ratchet tooth 9 is provided in the housing 1 , the pawl 8 is used for engaging with the ratchet tooth 9 , and a lifting ring 10 for fixing is provided on the top of the housing 1 .

In further detail, the rotating rope winding device 2 includes a rotating shaft 11 and a rope winding drum 12 sleeved on the outside of the rotating shaft 11. One end of the rotating shaft 11 is provided with a coil spring 13 and a coil spring cover 14, and the other end of the rotating shaft 11 is provided with a coil spring 13 and a coil spring cover 14. The sliding plate 5 is connected, and the coil spring 13 is located on the side of the cover of the coil spring 13 away from the sliding plate 5 . Rotating the rope winding device 2 can make the safety rope 3 expand and contract freely when the operator works and moves, and the safety rope 3 is wound on the rope winding drum 12 . The rotating shaft 11 rotates during expansion and contraction.

In further detail, the chute 7 is arc-shaped.

To be more specific, the angle formed by the connecting line between the head and tail ends of the chute 7 and the center of the sliding plate 5 is 30°.

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 On the sliding groove 7 of the upper plate 15 and the sliding groove 7 of the lower plate 16 , the pawl shaft 6 is sleeved with a protective sleeve 18 , and the protective sleeve 18 is used to protect the pawl shaft 6 . The protective sleeve 18 can well protect the pawl shaft 6 from being worn. Generally, the protective sleeve 18 is made of metal, such as copper. The pawl shaft 6 does not slide in a single chute 7, but passes through the upper plate 15 and the Corresponding to the chute 7 of the lower plate 16, the pawl 8 slides in the chute 7 of the upper plate 15 and the lower plate 16 at the same time when the shaft 6 slides. This design makes the structure more stable.

To be more specific, the ratchet pawl 8 is provided with a clamping groove 19 , and the clamping groove 19 is used to fit with the protrusion of the ratchet tooth 9 . When the pawl 8 and the ratchet tooth 9 are engaged, the force-bearing point is mainly at the slot 19 of the pawl 8, so that the pawl 8 is not easily broken, and the safety is greatly improved. Even the wear of the pawl 8 will not affect the safety performance.

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 further detail, the casing 1 is divided into an upper casing 21 and a lower casing 22. Both the upper casing 21 and the lower casing 22 are provided with an inner cavity 23, and the inner cavity 23 is used for accommodating the rotating rope winding device 2 and the locking device. 4. The upper casing 21 and the lower casing 22 are connected by a connecting rod 24 , and the ratchet teeth 9 are located on the inner wall of the inner cavity 23 of the lower casing 22 .

More specifically, the peripheral wall of the inner cavity 23 and the outer wall of the casing 1 are connected by reinforcing ribs 25, the reinforcing ribs 25 are connected end to end, and the gap between the reinforcing ribs 25 and the casing 1 is triangular. The reinforcing ribs 25 strengthen the structural strength of the casing 1 , making the casing 1 more firm, and can effectively prevent the casing 1 from breaking, and the gaps between the reinforcing ribs 25 can reduce the weight of the casing 1 itself.

In further detail, the lifting ring 10 is provided with a base 26 and a hanging piece 27, the base 26 and the hanging piece 27 are connected by a connecting column 28, the hanging piece 27 is used to hang on the building, and the base 26 and the connecting column 28 are embedded in the housing 1, The hanging piece 27 , the connecting column 28 and the base 26 are integrally formed. The one-piece molding structure can effectively prevent it from breaking, which greatly increases the safety factor.

In further detail, the bottom of the housing 1 is provided with a belt outlet 29, the belt outlet 29 is used for the extension of the safety rope 3, and the belt outlet 29 is provided with an anti-wear layer 30, which is used to prevent the safety rope 3 from wearing. . The wear layer 30 is made of a flexible material. In the process of using 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.

To be more specific, the side of the safety rope 3 located outside the housing 1 is provided with a hand-held portion 31 , and the hand-held portion 31 is convenient for the operator to hold by hand. The design of the hand-held portion 31 is convenient for the operator to pull out the safety rope 3, which is convenient for the operator to use.

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 shaft 6, the chute 7, the pawl 8, the ratchet tooth 9, the lifting ring 10, Rotating shaft 11, rope reel 12, coil spring 13, coil spring cover 14, upper plate 15, lower plate 16, connecting piece 17, protective sleeve 18, card slot 19, permanent magnet 20, upper casing 21, lower casing 22. Terms such as inner cavity 23, connecting rod 24, reinforcing rib 25, base 26, pendant 27, connecting column 28, outlet 29, anti-wear layer 30, hand-held part 31, lock 32, etc., but do not exclude the use of other terms Possibilities of terms. 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 (10)

1. A buffer-type speed difference fall arrester, characterized in that it comprises a housing (1), and the housing (1) is provided with a rotary rope winding device (2) and is wound around the rotary rope winding device (2). ), one end of the safety rope (3) is connected with the rotating rope reeling device (2), and the other end of the safety rope (3) goes out to the outside of the casing (1), so the The end of the safety rope (3) is used to connect with the human body, the rotating rope winding device (2) is used to make the safety rope (3) expand and contract freely when the operator moves, and the rotating rope winding device (2) ) is provided with a locking device (4), the locking device (4) is used to lock the safety rope (3) to prevent the operator from continuing to fall, and the locking device (4) includes a sliding plate (5) and The pawl shaft (6) is arranged on the sliding plate (5), the sliding plate (5) is provided with a chute (7), and the pawl shaft (6) can be inserted into the chute (7) Sliding, the pawl shaft (6) is connected with a pawl (8) that rotates around the pawl axis (6), the housing (1) is provided with a ratchet tooth (9), and the pawl (8) is used for engaging with the ratchet (9), and the top of the casing (1) is provided with a lifting ring (10) for fixing. 2. A buffer type speed difference fall arrester according to claim 1, characterized in that, the rotating rope winding device (2) comprises a rotating shaft (11) and a rotating shaft (11) sleeved outside the In the rope winding drum (12), one end of the rotating shaft (11) is provided with a coil spring (13) and a coil spring cover (14), and the other end of the rotating shaft (11) is connected with the sliding plate (5), so The coil spring (13) is located on the side of the coil spring cover (14) away from the sliding plate (5). 3 . The buffer type speed difference anti-fall arrester according to claim 1 , wherein the chute ( 7 ) is arc-shaped. 4 . 4. a kind of buffer type speed difference crash arrester according to claim 1 is characterized in that, the angle formed by the connection line between the head and tail ends of the chute (7) and the center of the sliding disc (5) is 30° . 5. A buffer type speed difference crash arrester according to claim 1, characterized in that, the sliding plate (5) is divided into an upper plate (15) and a lower plate (16), and the upper plate (16) (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) passes through The chute (7) of the upper disc (15) and the chute (7) of the lower disc (16), the pawl shaft (6) is sleeved with a protective sleeve (18), and the protective sleeve (18) To protect the pawl shaft (6). 6 . The buffer type speed difference crash arrester according to claim 1 , wherein the pawl ( 8 ) is provided with a card slot ( 19 ), and the card slot ( 19 ) is used for and The protrusions of the ratchet teeth (9) fit together. 7. A kind of buffer type speed difference fall arrester according to claim 1, is characterized in that, described sliding disc (5) is also provided with permanent magnet (20), described permanent magnet (20) uses on the adsorption pawl (8). 8. A buffer type differential crash arrester according to claim 1, characterized in that, the casing (1) is divided into an upper casing (21) and a lower casing (22), and the Both the upper casing (21) and the lower casing (22) are provided with an inner cavity (23), the inner cavity (23) is used for accommodating the rotating rope winding device (2) and the locking device (4), the The upper casing (21) and the lower casing (22) are connected by connecting rods (24), and the ratchet teeth (9) are located on the inner wall of the inner cavity (23) of the lower casing (22). 9 . The buffer type speed difference fall arrester according to claim 8 , wherein the peripheral wall of the inner cavity ( 23 ) and the outer wall of the casing ( 1 ) are connected by a reinforcing rib ( 25 ), so that the The reinforcing ribs (25) are connected end to end, and the gap between the reinforcing ribs (25) and the shell (1) is triangular. 10 . The buffer type speed difference fall arrester according to claim 1 , wherein the hoisting ring ( 10 ) is provided with a base ( 26 ) and a pendant ( 27 ), and the base ( 26 ) and The hanging pieces (27) are connected by connecting columns (28), the hanging pieces (27) are used to hang on the building, and the base (26) and the connecting column (28) are embedded in the casing (1). , the pendant (27), the connecting column (28) and the base (26) are integrally formed.

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