CN214129975U

CN214129975U - fall arrester

Info

Publication number: CN214129975U
Application number: CN202022361301.0U
Authority: CN
Inventors: 洪暐杰; 廖文铭
Original assignee: Yoke Industrial Corp
Current assignee: Yoke Industrial Corp
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-09-07
Anticipated expiration: 2030-10-21

Abstract

A fall arrester includes a bracket, a turntable and a braking module; the turntable is pivoted on the bracket; the turntable includes a body and a normally open ratchet, the normally open ratchet has a first abutting portion, and the normally open ratchet is pivoted on a set of The brake module is fixedly combined with the bracket, and includes a cover body, a friction disc and a ratchet disc that are coaxially arranged in sequence, and the outer edge of the ratchet disc has a second abutting part; when the turntable rotates at a speed greater than or equal to a predetermined speed, When the first abutting portion is moved to the second position and is in contact with the second abutting portion, the cover body and the ratchet plate are driven by the turntable to rotate relative to the friction plate, and the cover body and the ratchet plate respectively generate frictional resistance with the friction plate. and stop the rotation of the turntable. Therefore, the braking module can be directly disassembled from the fall arrester of the present invention and replaced, so as to ensure that each braking module has the same initial conditions of use.

Description

Falling protector

Technical Field

The utility model relates to a safety hook; in particular to a falling protector capable of quickly replacing a brake module.

Background

Because the building floor of the building is higher, no matter the building staff is building or the outer wall is cleaned and painted after building is finished, the danger of the building staff increases along with the height of the working position, therefore, when the building is working at high altitude, the staff is equipped with a safety catch comprising a safety belt, the safety catch is fixedly connected on a support, and the safety belt is tied on the body of the staff to prevent the staff from continuously falling, thereby ensuring the safety of the staff.

The traditional safety catch comprises a rotating part, a safety belt and a braking device, wherein one end of the safety belt is connected with the rotating part and wound on the rotating part; the braking device comprises a braking disc, a braking block and a stopping piece, wherein the braking disc is connected to the rotating piece and rotates coaxially with the rotating piece, the braking block is pivoted on the braking disc, and the braking block is thrown out under the action of centrifugal force generated when the braking disc rotates instantly and is clamped with the stopping piece so as to limit the rotation of the rotating piece. When the person falls carelessly during the hanging operation, the braking device can exert the function of emergency locking to stop the rotation of the rotating part, so as to prevent the continuous falling of the worker.

However, the brake disc of the conventional safety catcher is worn due to long-term use, so that the brake disc needs to be periodically adjusted in braking parameters (such as torque value of clamping screws, etc.), and the disassembling process of the brake disc is complicated due to the various parts involved. Failure to resume assembly following standard procedures can result in the fall arrester failing, potentially endangering the user.

Accordingly, there is a need for a novel fall arrester that ameliorates the above-mentioned problems that exist with conventional fall arresters over time.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a safety brake device, which can replace new brake modules of the safety brake device through a simple disassembly process, and ensure that each new brake module has the same brake parameter value.

In order to achieve the above object, the present invention provides a safety catch comprising a support, a rotating disc and a braking module; the bracket is provided with a first supporting arm and a second supporting arm; the turntable is pivoted on the bracket and is positioned between the first support arm and the second support arm; the rotary disc comprises a body and at least one normally open ratchet, wherein the body is provided with a containing part and a setting part, and the containing part is used for winding a flexible strip body thereon; the normally open ratchet is provided with a first abutting part and is pivoted on the setting part, and when the rotary disc rotates at a preset rotating speed or more, the pivoting swing of the first abutting part moving from a first position to a second position is generated; the brake module is provided with a convex part, and the brake module is fixedly combined on the first support arm through the convex part, so that the brake module is positioned between the first support arm and the setting part of the turntable; the brake module is also provided with a plurality of second abutting parts which are arranged on a rotating path formed by the rotation of the rotating disc when the first abutting part is positioned at the second position and can abut against the first abutting part; the brake module comprises a cover body, a friction disc and a ratchet disc which are coaxially arranged in sequence, the outer edge of the ratchet disc is provided with a plurality of second abutting parts, the ratchet disc is provided with an accommodating space for accommodating the friction disc and the cover body, and the cover body and the ratchet disc are fixedly connected with each other and clamp the friction disc; the friction disc is provided with the convex part and is fixedly combined on the first support arm; when the rotating disc rotates at a speed greater than or equal to the predetermined speed, the first abutting portion moves to the second position and abuts against the second abutting portions, the cover and the ratchet disc are driven by the rotating disc to rotate relative to the friction disc, and the cover and the ratchet disc generate frictional resistance with the friction disc respectively to stop rotation of the rotating disc.

The utility model discloses an effect lies in, the utility model provides a safety hook can be via the simple new brake module that can change the safety hook of disassembling the step to ensure that each new brake module all has the same braking parameter value.

Drawings

Fig. 1 is a perspective view of a preferred embodiment of the safety catch of the present invention.

Fig. 2 is a partially exploded view of fig. 1.

Fig. 3 is a front view of a preferred embodiment of the fall arrester of the present invention with the first arm of the support frame removed.

Fig. 4 is a partially exploded view of fig. 1.

FIG. 5 is a front view of the brake module of the fall arrester of the preferred embodiment described above.

Figure 6 is a cross-sectional view taken along line 6-6 of figure 5.

Fig. 7 is an exploded view of fig. 5.

Description of the reference numerals

[ the utility model ]

1: falling protector

10: support frame

12: first support arm

14: second support arm

141: axle post

142: non-cylindrical section

20: rotary disc

21: body

212: setting part

214: receiving part

22: normally open ratchet

221: pivot shaft

222: first contact part

30: brake module

302: second abutting part

31: convex part

311: non-circular hole

312: second bump

32: cover body

32 a: fourth friction surface

321: fixing piece

322. 331, 341: round hole

33: friction disk

33': friction member

33 a: third friction surface

332: first bump

34: ratchet plate

34 a: first friction surface

342: containing space

35. 36: elastic piece

Detailed Description

In order to explain the present invention more clearly, the following detailed description will be given with reference to the accompanying drawings. Referring to fig. 1 to 3, fig. 1 is a perspective view of a safety catch 1 according to a preferred embodiment of the present invention; FIG. 2 is a partially exploded view of FIG. 1; fig. 3 is a front view of the safety brake device 1 according to a preferred embodiment of the invention, with the first leg 12 of the support 10 removed. In fig. 1 to 3, the safety brake device 1 comprises a support 10, a rotor 20 and a brake module 30.

The stand 10 has a first arm 12 and a second arm 14. The turntable 20 is pivotally mounted on the support 10 and located between the first support arm 12 and the second support arm 14.

The rotary disc 20 includes a main body 21 and at least one normally open ratchet 22, wherein the main body 21 has a setting portion 212 and a holding portion 214. The receiving portion 214 is used for a flexible strip body (not shown) to be wound thereon. Each normally open ratchet 22 has a first abutting portion 222 and a pivot 221, and the normally open ratchet 22 is pivoted on the setting portion 212 through the pivot 221, and when the rotary disc 20 rotates at a predetermined speed or more, the normally open ratchet 22 generates a pivoting swing that the first abutting portion 222 moves from a first position to a second position. It should be noted that when the rotary disc 20 rotates at a speed less than the predetermined speed, the first abutting portion 222 of the normally open ratchet 22 does not constantly abut against the second abutting portions 302 of the brake module 30, and the normally open ratchet 22 is in a normally open state.

The brake module 30 has a protrusion 31, and the brake module 30 is fixedly coupled to the first arm 12 by the protrusion 31, such that the brake module 30 is located between the first arm 12 and the setting portion 212 of the turntable 20. The brake module 30 further includes a plurality of second abutting portions 302, and the plurality of second abutting portions 302 are disposed on a rotation path formed by the rotation of the turntable 20 when the first abutting portion 222 is located at the second position, and can abut against the first abutting portion 222 to stop the rotation of the turntable 20.

Referring to fig. 4 to 7, fig. 4 is a partially exploded view of fig. 1; FIG. 5 is a front view of the brake module 30 of the fall arrester 1 of the preferred embodiment; FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 5; fig. 7 is an exploded view of fig. 5. In fig. 4, the brake module 30 is a separate component in the safety brake 1, which can be disassembled from a shaft 141 of the second support frame 14 after the first arm 12 of the support frame 10 is removed.

In fig. 5 to 7, the brake module 30 includes a cover 32, a friction disc 33 and a ratchet disc 34, wherein the cover 32, the friction disc 33 and the ratchet disc 34 are coaxially disposed in sequence, the outer edge of the ratchet disc 34 has the plurality of second abutting portions 302, the ratchet disc 34 has an accommodating space 342 for accommodating the friction disc 33 and the cover 32, and the cover 32 and the ratchet disc 34 are fixedly connected to each other and clamp the friction disc 33. The friction disk 33 has the protruding portion 31, and the friction disk 33 is fixedly coupled to the first arm 12.

When the rotating disc 20 rotates at the predetermined speed or more, so that the first abutting portion 222 moves to the second position and abuts against the plurality of second abutting portions 302, the cover 32 and the ratchet plate 34 are driven by the rotating disc 20 to rotate relative to the friction disc 33, and the cover 32 and the ratchet plate 34 generate frictional resistance with the friction disc 33 respectively to stop the rotation of the rotating disc 20.

In fig. 7, the cover 32 and the ratchet plate 34 have

circular holes

322, 341 at the centers thereof, respectively, and the friction plate 33 has a non-circular hole 311 at the center thereof, wherein the maximum inner diameter W1 of the non-circular hole 311 is smaller than or equal to the minimum inner diameter of the

circular holes

322, 341.

The friction disc 33 includes a friction member 33 'and a non-circular hole member (i.e., the protrusion 31), the friction member 33' has a first protrusion 332 and a circular hole 331 in the axial direction, the non-circular hole member has a second protrusion 312 and a non-circular hole 311 in the axial direction, and the first protrusion 332 and the second protrusion 312 are connected to each other in an axially offset manner.

In a preferred embodiment of the present invention, the side surface of the first protrusion 332 and the side surface of the second protrusion 312 are detachably connected to each other, when the side surface of the first protrusion 332 and the side surface of the second protrusion 312 are connected to each other, the second protrusion 312 of the non-circular hole part pushes against the first protrusion 332 of the friction part 33 ', so that the friction part 33' cannot rotate relative to the non-circular hole part.

In fig. 4, the second arm 14 has the shaft post 141 passing through the rotating disc 20 and the brake module 30, the shaft post 141 has a non-cylindrical section 142 matching with the non-circular hole 331, so that the friction disc 33 is fixed to the shaft post 141, and the cover 32 and the ratchet 34 can rotate relative to the friction disc 33 and the shaft post 141.

In fig. 6, the ratchet plate 34 has a first friction surface 34a, the friction plate 33 has a second friction surface 33a and a third friction surface 33b opposite to each other, and the cover 32 has a fourth friction surface 32a, wherein the first friction surface 34a and the second friction surface 33a face each other, and the third friction surface 33b and the fourth friction surface 32a face each other. In a preferred embodiment of the present invention, the first friction surface 34a and the second friction surface 33a contact each other, and the third friction surface 33b and the fourth friction surface 32a contact each other.

In a preferred embodiment of the present invention, the brake module 30 includes at least one

elastic member

35, 36 disposed between the first friction surface 34a and the second friction surface 33a, between the third friction surface 33b and the fourth friction surface 32a, or a combination thereof. In fig. 6 and 7, the brake module 30 includes two

elastic members

35 and 36, wherein the elastic member 35 is disposed between the first friction surface 34a and the second friction surface 33a and is in contact with the first friction surface 34a and the second friction surface 33a, respectively, and the elastic member 36 is disposed between the third friction surface 33b and the fourth friction surface 32a and is in contact with the third friction surface 33b and the fourth friction surface 32a, respectively. In a preferred embodiment of the present invention, the

elastic members

35, 36 comprise wave washers, in particular made of metal.

It should be noted that, when the cover 32, the elastic element 36, the friction disc 33, the elastic element 35 and the ratchet disc 34 of the brake module 30 are sequentially combined and locked by a plurality of fixing elements 321, the two

elastic elements

35 and 36 generate elastic tension for the plurality of fixing elements 321, and at this time, the plurality of fixing elements 321 can be locked by a torque wrench (not shown), so that the plurality of fixing elements 321 have a preset torque value. When the safety hook 1 is used for a long time, the braking module 30 will wear and tear, so as to reduce the torsion values of the fixing members 321, and at this time, if the torsion values of the fixing members 321 are lower than a standard value, a new braking module 30 must be immediately replaced to ensure that the braking module 30 of the safety hook 1 has a consistent preset (initial) torsion value.

In a preferred embodiment of the present invention, the cover 32 and the ratchet plate 34 are fixedly connected to each other by the fixing members 321, and the distance between the fixing members 321 and the axis of the brake module 30 is greater than the outer diameter of the friction disc 33, so as to improve the clamping effect of the cover 32 and the ratchet plate 34 on the friction disc 33, and further improve the braking effect among the cover 32, the friction disc 33 and the ratchet plate 34.

Through the utility model discloses a design, the utility model provides a safety hook can be via the simple new brake module that can change the safety hook of disassembling the step to ensure that each new brake module all has the same braking parameter value.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications to the application of the present invention and the claims should be considered to be included in the scope of the present invention.

Claims

1. A fall arrester, comprising:

a bracket having a first arm and a second arm;

the rotating disc is pivoted on the bracket and is positioned between the first supporting arm and the second supporting arm; the rotary disc comprises a body and at least one normally open ratchet, wherein the body is provided with a containing part and a setting part, and the containing part is used for winding a flexible strip body thereon; the normally open ratchet is provided with a first abutting part and is pivoted on the setting part, and when the rotary disc rotates at a preset rotating speed or more, the pivoting swing of the first abutting part moving from a first position to a second position is generated;

the brake module is provided with a convex part, and the brake module is fixedly combined on the first support arm through the convex part, so that the brake module is positioned between the first support arm and the setting part of the turntable; the brake module is also provided with a plurality of second abutting parts which are arranged on a rotating path formed by the rotation of the rotating disc when the first abutting part is positioned at the second position and can abut against the first abutting part;

the brake module comprises a cover body, a friction disc and a ratchet disc which are coaxially arranged in sequence, the outer edge of the ratchet disc is provided with a plurality of second abutting parts, the ratchet disc is provided with an accommodating space for accommodating the friction disc and the cover body, and the cover body and the ratchet disc are fixedly connected with each other and clamp the friction disc; the friction disc is provided with the convex part and is fixedly combined on the first support arm; when the rotating disc rotates at a speed greater than or equal to the predetermined speed, the first abutting portion moves to the second position and abuts against the second abutting portions, the cover and the ratchet disc are driven by the rotating disc to rotate relative to the friction disc, and the cover and the ratchet disc generate frictional resistance with the friction disc respectively to stop rotation of the rotating disc.

2. The fall arrester of claim 1, wherein the cover and the ratchet plate each have a circular hole at a center thereof, and the friction plate has a non-circular hole at a center thereof, a maximum inner diameter of the non-circular holes being less than or equal to a minimum inner diameter of the circular holes; the second support arm is provided with a shaft column which penetrates through the rotating disc and the brake module, the shaft column is provided with a non-cylindrical section which is matched with the non-circular hole, so that the friction disc is fixed on the shaft column, and the cover body and the ratchet disc can rotate relative to the friction disc.

3. The fall arrester of claim 2 wherein the friction disk includes a friction member and a non-circular bore member, the friction member having a first projection in the axial direction and the non-circular bore member having a second projection in the axial direction and the non-circular bore, the first projection and the second projection being axially offset from one another.

4. The fall arrester of claim 3, wherein a side surface of the first protrusion and a side surface of the second protrusion are detachably connected to each other, and when the side surface of the first protrusion and the side surface of the second protrusion are connected to each other, the second protrusion of the non-circular hole member pushes against the first protrusion of the friction member, so that the friction member cannot rotate relative to the non-circular hole member.

5. The fall arrester of claim 1 wherein the ratchet plate has a first friction surface, the friction plate has a second friction surface and a third friction surface opposite each other, the cover has a fourth friction surface, the first and second friction surfaces face each other, and the third and fourth friction surfaces face each other.

6. The fall arrester of claim 5 wherein the first friction surface and the second friction surface contact each other and the third friction surface and the fourth friction surface contact each other.

7. The fall arrester of claim 5, wherein the braking module comprises at least one resilient member disposed between the first friction surface and the second friction surface, between the third friction surface and the fourth friction surface, or a combination thereof.

8. The fall arrester of claim 5 wherein the cover and the ratchet plate are secured to each other by a plurality of fasteners spaced from an axis of the brake module by a distance greater than an outer diameter of the friction plate.