CN215505218U

CN215505218U - Differential speed falling protector for high-altitude operation

Info

Publication number: CN215505218U
Application number: CN202122050791.7U
Authority: CN
Inventors: 姚思绮; 孙健
Original assignee: Taizhou Juhuan Crane Protection Equipment Co ltd
Current assignee: Taizhou Juhuan Crane Protection Equipment Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-01-14
Anticipated expiration: 2031-08-26

Abstract

The utility model relates to the technical field of high-altitude operation protection equipment, in particular to a speed difference falling protector for high-altitude operation, which comprises a shell and a sealing cover, wherein the sealing cover is locked with one end of the shell through a bolt; this speed difference safety hook keeps sealed through spacing ring and sealing washer to the action region of pawl body, and the effectual foreign matter that has gets into the action region, breaks down when avoiding the pawl operation, and adopts the structural stability when the cooperation of second limiting plate and limiting plate promotes the swing of pawl body, further promotion safety hook security performance.

Description

Differential speed falling protector for high-altitude operation

Technical Field

The utility model relates to the technical field of high-altitude operation protection equipment, in particular to a speed difference falling protector for high-altitude operation.

Background

The speed difference type safety hook is a safety protection tool specially designed for falling from high altitude. The operating principle is that the falling speed difference of an object is utilized to carry out automatic control, and if an operator accidentally falls from high altitude, the speed difference type falling protector can start the locking assembly inside the falling protector to lock the safety rope to prevent the operator from continuously falling because of the over-high falling speed.

The general speed difference type falling protector is characterized in that a pawl which is elastically folded is connected to a rotating disc and matched with a fixed disc, when an operator falls carelessly and a safety rope is pulled down rapidly, the pawl is thrown away centrifugally and blocks a fixed inner fluted disc, so that the rotating disc stops rotating, and the falling of the operator is prevented.

The existing speed difference safety hook has problems in the using process, the existing speed difference safety hook is complex in structure and high in equipment processing cost, the fault tolerance rate of the speed difference safety hook with a complex internal structure is low, and when foreign matters enter the speed difference safety hook from a safety rope in-out area, internal parts of the speed difference safety hook easily fail to influence the safety protection performance of the speed difference safety hook.

Aiming at the problem that the existing speed difference safety catcher is exposed in the using process, the structural improvement and optimization of the speed difference safety catcher are needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a speed difference falling protector for high-altitude operation, which has the characteristic of effectively avoiding the failure of a locking assembly of the speed difference device when foreign matters enter the speed difference device.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a speed difference safety hook for high altitude construction, passes through the sealed lid of bolt locking including casing and casing one end, the casing is equipped with rotatable rope winding post with the relative inner wall gomphosis of sealed lid, the outer wall of rope winding post is convoluteed there is the safety rope, logical groove has been seted up to the bottom of casing, the safety rope passes from the inside that leads to the groove, rope winding post is fixed with the second limiting plate towards the one end of sealed lid, a side fixed surface that the second limiting plate deviates from the rope winding post is provided with the pawl mounting panel, the outer fringe department of pawl mounting panel has evenly seted up and has accomodate the groove, and the inside of accomodating the groove is equipped with wobbling pawl body, the opposite side laminating of pawl mounting panel is equipped with the limiting plate that is used for preventing the skew of pawl body, sealed lid has the spacing ring with limiting plate, the nested complex of pawl mounting panel towards the lateral wall integrated into one piece of casing, the spacing ring is evenly arranged with the inner wall that pawl mounting panel laminated and is seted up a plurality ofly and is with pawl body matched with pawl The claw locks the tooth groove.

According to the preferable technical scheme of the speed difference safety catcher for high-altitude operation, a first limiting plate is fixed at one end, different from a second limiting plate, of the rope winding column, a torsion spring which is spirally wound is fixed on the inner wall of the shell, the other end of the torsion spring is connected to the first limiting plate, and the first limiting plate and the rope winding column are driven to rotate through torsion.

According to the preferable technical scheme of the speed difference falling protector for high-altitude operation, the embedded column is fixed on the inner wall of the shell along the axial direction of the first limiting plate, and the positioning column embedded with the embedded column is integrally formed on the side wall of the first limiting plate.

According to the preferable technical scheme of the speed difference falling protector for high-altitude operation, the first limiting plate is fixedly provided with the sealing ring towards the outer edge of the side wall of the shell, and the other end of the sealing ring is in contact with the inner wall of the shell and seals the embedded column and the torsion spring.

According to the preferable technical scheme of the speed difference falling protector for high-altitude operation, a sealing ring is fixedly arranged on the surface of one side, away from the sealing cover, of the limiting ring, and the sealing ring can be embedded and sleeved on the outer wall of the second limiting plate to protect the pawl body and the pawl locking tooth groove.

As the preferred technical scheme of the speed difference falling protector for high-altitude operation, the rope winding column is a C-shaped strip-shaped component, and a loop bar convenient for sleeving the end part of the safety rope is further arranged inside the rope winding column along the axial direction of the rope winding column.

According to the preferable technical scheme of the speed difference falling protector for high-altitude operation, the accommodating groove is a U-shaped groove extending towards the inner side of the pawl mounting plate, the side wall of the limiting plate is integrally formed with a limiting column penetrating through the pawl body, and the pawl body can deflect around the limiting column in the accommodating groove.

As the preferred technical scheme of the speed difference safety hook for high-altitude operation, the accommodating groove is gradually shrunk outwards along the opening and limits the pawl body.

Compared with the prior art, the utility model has the beneficial effects that:

1. the sealing ring is additionally arranged in the speed difference falling protector, the sealing ring can effectively keep the action area of the torsion spring to be sealed, when foreign matters enter the shell, the foreign matters are prevented from being clamped in the action area of the torsion spring, the speed difference falling protector is prevented from being insensitive to action, and the safety performance of the speed difference falling protector is effectively improved.

2. This speed difference safety hook keeps sealed through spacing ring and sealing washer to the action region of pawl body, and the effectual foreign matter that has gets into the action region, breaks down when avoiding the pawl operation, and adopts the structural stability when the cooperation of second limiting plate and limiting plate promotes the swing of pawl body, further promotion safety hook security performance.

3. This speed difference safety hook inner structure is simple, and each part workable concatenation, when further promoting product security performance, the effectual manufacturing cost that has reduced structurally optimizes, has reduced the complexity of structure, when guaranteeing structural strength, the effectual weight that reduces product self, the more convenient to use personnel use.

Drawings

In order that the present invention may be more readily and clearly understood, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the explosion structure of the differential safety catcher in the present invention;

FIG. 3 is a schematic view of a rotary rope winding assembly according to the present invention;

FIG. 4 is a schematic view of the pawl of the present invention in the stowed configuration;

FIG. 5 is a schematic view of the pawl of the present invention shown in an open configuration;

in the figure: 1. a housing; 2. a sealing cover; 3. a hoisting ring; 4. a safety cord; 5. a fitting column; 6. a torsion spring; 7. a first limit plate; 8. a through groove; 9. a seal ring; 10. a rope winding column; 11. a second limiting plate; 12. a pawl mounting plate; 13. a pawl body; 14. a limiting plate; 15. a limiting ring; 16. a seal ring; 17. the pawl locks the teeth.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1 to 5, the speed difference safety hook for high-altitude operation comprises a sealing cover 2, one end of the sealing cover 2 is locked with a shell 1 through a bolt, a rotatable rope winding column 10 is embedded in the inner wall of the shell 1 opposite to the sealing cover 2, a safety rope 4 is wound on the outer wall of the rope winding column 10, a through groove 8 is formed in the bottom end of the shell 1, the safety rope 4 penetrates through the through groove 8, a second limiting plate 11 is fixed on one end, facing the sealing cover 2, of the rope winding column 10, a pawl mounting plate 12 is fixed on the surface of one side, facing away from the rope winding column 10, of the second limiting plate 11, accommodating grooves are uniformly formed in the outer edge of the pawl mounting plate 12, a swingable pawl body 13 is arranged inside the accommodating grooves, a limiting plate 14 for preventing the pawl body 13 from shifting is attached to the other side of the pawl mounting plate 12, and a limiting plate 14 is integrally formed on the side wall, facing the shell 1, of the sealing cover 2 and the limiting plate 14, The nested complex spacing ring 15 of pawl mounting panel 12, the inner wall that spacing ring 15 and pawl mounting panel 12 laminated is evenly arranged and has been seted up a plurality ofly and pawl body 13 matched with pawl locking tooth's socket 17, the top of casing 1 still is equipped with rotatable rings 3, be convenient for be connected with other objects in the external world, the speed difference safety hook disclosed among this technical scheme, effectual lifting means's security performance in the in-service use process, and each part can adopt the light-weighted material integrated into one piece that moulds plastics, the effectual manufacturing cost and the assembly cost that has reduced.

Specifically, the one end of being different from second limiting plate 11 around the rope post 10 is fixed with first limiting plate 7, and the inner wall of casing 1 is fixed with spiral winding's torque spring 6, and the torque spring 6 other end is connected on first limiting plate 7 to drive first limiting plate 7 and rotate around rope post 10 through torsion, torque spring 6 is used for the pulling safety rope 4 to reset in this embodiment, is convenient for retrieve safety rope 4.

Specifically, the inner wall that lies in casing 1 along the axial of first limiting plate 7 is fixed with embedded column 5, and the lateral wall integrated into one piece of first limiting plate 7 has the reference column with 5 looks gomphosis of embedded column, and the reference column can further promote around the stability of rope post 10 rotation in-process with the cooperation of embedded column 5 in this embodiment, and the effectual rope post 10 rotation in-process of avoiding rocks.

Specifically, first limiting plate 7 is fixed to be equipped with sealing ring 9 towards the lateral wall periphery department of casing 1, and the sealing ring 9 other end contacts and seals the embedded column 5, torsion spring 6 with casing 1 inner wall, and sealing ring 9 adopts the elasticity rubber component in this embodiment, further promotes the leakproofness to torsion spring 6 action area through the elasticity of rubber self.

Specifically, the retaining ring 15 deviates from one side fixed surface of sealed lid 2 and is equipped with sealing washer 16, and sealing washer 16 can inlay the cup joint and protect pawl body 13, pawl locking tooth's socket 17 at 11 outer walls of second limiting plate, and sealing washer 16 adopts the rubber circle to make in this embodiment, and the further promotion of elasticity that rubber construction possessed through itself is to the sealed protection of pawl body 13 action area.

Specifically, the rope winding column 10 is a C-shaped strip member, and a loop bar which is convenient for the end of the safety rope 4 to be sleeved is further arranged inside the rope winding column 10 along the axial direction of the rope winding column 10, and the loop bar is more convenient for the end of the safety rope 4 to be installed in this embodiment.

It is specific, accomodate the U type groove of groove for extending to pawl mounting panel 12 inboard, limiting plate 14's lateral wall integrated into one piece has the spacing post that runs through pawl body 13, pawl body 13 can deflect round the inside of spacing post accomodating the groove, U type groove can be so that pawl body 13 possesses certain limit when deflecting in this embodiment, self deflection angle is too big when avoiding pawl body 13 to deflect, and then the stability when promoting pawl body 13 and using, avoid pawl body 13 because of deflection is too big and broken.

Specifically, accomodate the groove and carry out spacingly along the outside gradual shrinkage of opening and to pawl body 13, the groove of accomodating of contracting gradually can avoid pawl body 13 to drop on pawl mounting panel 12 in this embodiment, and the staff of being more convenient for carries out the erection joint to pawl body 13.

The working principle and the using process of the utility model are as follows: when the speed difference falling protector is installed, two ends of the rope winding column 10 are embedded and sleeved on the side walls of the shell 1 and the sealing cover 2, the embedded column 5 can limit the positioning column on the side wall of the first limiting plate 7, and the stability of the rope winding column 10 during rotation is further improved;

one end of the safety rope 4 is sleeved on a loop bar inside the rope winding column 10, the safety rope 4 is wound on the side wall of the rope winding column 10, the other end of the safety rope 4 extends out of the through groove 8 and is tied to a worker working at high altitude, and the outer wall of the first limiting plate 7 is connected with one end of the torsion spring 6;

when a user pulls the safety rope 4 with a relatively soft force, the safety rope 4 slowly extends out of the interior of the shell 1 when pulled, the rope winding column 10 and the first limiting plate 7 are driven to rotate at the moment, the first limiting plate 7 drives the torsion spring 6 on the side surface of the safety rope to wind and tighten, the second limiting plate 11 and the pawl mounting plate 12 synchronously rotate in the limiting ring 15 in the process, the rope winding column 10 and the pawl mounting plate 12 rotate at a relatively slow speed, the centrifugal force applied to the pawl body 13 is relatively small at the moment, the pawl body 13 is in the accommodating groove, although the pawl body 13 rotates towards the direction of the pawl locking tooth groove 17, the pawl body 13 does not contact with the pawl locking tooth groove 17 to be meshed and locked;

when the stretching speed of the safety rope 4 is increased rapidly, the rope winding column 10 and parts at two ends of the rope winding column 10 are driven to rotate rapidly, the centrifugal force applied to the pawl body 13 by the pawl mounting plate 12 in the rotation process is increased, the end part of the pawl body 13 is thrown out in the rotation process, so that the pawl body is clamped on the pawl locking tooth groove 17, the pawl body 13 is locked through the engagement of the pawl body 13 and the pawl locking tooth groove 17, the pawl mounting plate 12 is kept fixed, the rope winding column 10 moves, the safety rope 4 cannot be stretched outwards at the moment, the speed difference safety catch finishes the locking of the safety rope 4 at the moment, and workers hung on the speed difference safety catch are prevented from falling;

when the tensile force applied to the safety rope 4 disappears, the torsion spring 6 can enable the first limiting plate 7 to drive the rope winding column 10 to rotate reversely through the torsion of the torsion spring 6, so that the pawl mounting plate 12 and the pawl body 13 rotate reversely together, at the moment, the pawl body 13 is guided by the guide slope on the side surface of the pawl locking tooth groove 17 and is bunched into the accommodating groove on the side surface of the pawl mounting plate 12, the resetting of the pawl body 13 is further completed, the torsion spring 6 continues to drive the first limiting plate 7 and the rope winding column 10 to rotate reversely through the torsion of the torsion spring 6, the safety rope 4 is pulled back when the rope winding column 10 rotates reversely, and the safety rope 4 is recovered and wound;

the sealing ring 9 is fixedly arranged on the side wall of the first limiting plate 7, the sealing ring 9 can seal the area where the torsion spring 6 is located, and foreign matters are prevented from being clamped on the torsion spring 6;

the other end of the rope winding column 10 limits the second limiting plate 11, the pawl mounting plate 12 and the limiting plate 14 through the limiting ring 15 and the sealing ring 16, and the second limiting plate 11 and the limiting plate 14 limit the pawl body 13 on the side surface of the pawl mounting plate 12 under the action of the limiting ring, so that the stability of the pawl body 13 in the deflection process is improved, and the pawl body 13 is prevented from falling off in the deflection process;

the sealing ring 16 is fixed on the side surface of the limiting ring 15, and the sealing ring 16 can be tightly attached to the outer edge of the second limiting plate 11, so that the region of the pawl body 13 and the pawl locking tooth groove 17 is kept sealed, foreign bodies are prevented from being clamped in a pawl action region, and the speed difference safety catcher is prevented from being insensitive to action.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all equivalent variations made by using the contents of the present specification and the drawings are within the protection scope of the present invention.

Claims

1. The utility model provides a speed difference safety hook for high altitude construction, includes that casing (1) and casing (1) one end pass through sealed lid (2) of bolt locking, its characterized in that: casing (1) is equipped with rotatable rope winding post (10) with the relative inner wall gomphosis of sealed lid (2), the outer wall of rope winding post (10) is convoluteed and is equipped with safety rope (4), logical groove (8) have been seted up to the bottom of casing (1), safety rope (4) are passed from the inside that leads to groove (8), rope winding post (10) are fixed with second limiting plate (11) towards the one end of sealed lid (2), one side fixed surface that second limiting plate (11) deviate from rope winding post (10) is provided with pawl mounting panel (12), the outer fringe department of pawl mounting panel (12) has evenly seted up and has accomodate the groove, and the inside of accomodating the groove is equipped with wobbling pawl body (13), the opposite side laminating of pawl mounting panel (12) is equipped with limiting plate (14) that are used for preventing pawl body (13) skew, sealed lid (2) have towards the lateral wall integrated into one piece of casing (1) with limiting plate (14), The pawl mounting plate (12) is nested with the matched limiting ring (15), and the inner wall of the limiting ring (15) which is attached to the pawl mounting plate (12) is uniformly distributed with a plurality of pawl locking tooth grooves (17) matched with the pawl body (13).

2. The differential speed safety catch for high-altitude operation according to claim 1, characterized in that: one end of the rope winding column (10) different from the second limiting plate (11) is fixed with a first limiting plate (7), the inner wall of the shell (1) is fixed with a torsion spring (6) wound in a spiral mode, the other end of the torsion spring (6) is connected to the first limiting plate (7), and the first limiting plate (7) and the rope winding column (10) are driven to rotate through torsion.

3. The differential speed safety catch for high-altitude operation of claim 2, wherein: an embedded column (5) is fixed on the inner wall of the shell (1) along the axial direction of the first limiting plate (7), and a positioning column embedded with the embedded column (5) is integrally formed on the side wall of the first limiting plate (7).

4. The differential speed safety catch for high-altitude operation of claim 3, wherein: first limiting plate (7) are fixed and are equipped with sealing ring (9) towards the lateral wall periphery department of casing (1), sealing ring (9) other end and casing (1) inner wall contact and seal embedding post (5), torsion spring (6).

5. The differential speed safety catch for high-altitude operation according to claim 1, characterized in that: one side fixed surface that spacing ring (15) deviates from sealed lid (2) is equipped with sealing washer (16), sealing washer (16) can inlay the cup joint and protect pawl body (13), pawl locking tooth's socket (17) at second limiting plate (11) outer wall.

6. The differential speed safety catch for high-altitude operation according to claim 1, characterized in that: the rope winding column (10) is a C-shaped strip-shaped component, and a loop bar convenient for sleeving the end part of the safety rope (4) is further arranged inside the rope winding column (10) along the axial direction of the rope winding column (10).

7. The differential speed safety catch for high-altitude operation according to claim 1, characterized in that: accomodate the groove and be to the inboard U type groove that extends of pawl mounting panel (12), the lateral wall integrated into one piece of limiting plate (14) has the spacing post that runs through pawl body (13), pawl body (13) can be around spacing post in the inside deflection of accomodating the groove.

8. The differential speed safety catch for high-altitude operation according to claim 1, characterized in that: the accommodating groove gradually shrinks outwards along the opening and limits the pawl body (13).