CN214886347U

CN214886347U - Anti-falling safety device and lifting equipment of industrial door

Info

Publication number: CN214886347U
Application number: CN202023334482.4U
Authority: CN
Inventors: 费清川; 翁秋华; 杨惕
Original assignee: SHANGHAI FASTLINK CO Ltd
Current assignee: SHANGHAI FASTLINK CO Ltd
Priority date: 2020-06-28
Filing date: 2020-12-31
Publication date: 2021-11-26
Anticipated expiration: 2030-12-31
Also published as: CN113846926A

Abstract

The side edge of the door plate is also provided with a shaft which is rotatably connected with a wheel body of the cam; the shaft is further provided with a torsion spring, and the preset torsion of the torsion spring can drive the wheel body to rotate, so that the protruding part of the cam is in contact with and locked with the inner wall of the track. The utility model discloses a cam cooperation stereoplasm rubber, when wire rope fracture, the cam release leans on stereoplasm rubber and orbital frictional force to realize the lift gate braking, prevents that the lift gate from falling, has characteristics such as simple structure, with low costs, maintenance convenience.

Description

Anti-falling safety device and lifting equipment of industrial door

Technical Field

The utility model relates to a safety device that prevents falling of industrial door, specifically speaking are safety device and the lifting means of industrial door that prevent falling.

Background

With the rapid development of the logistics industry, the industrial lift gate is widely applied to the logistics warehouse and other places. The industrial lifting door is generally driven by a motor to lift and comprises a track assembly, a door plate assembly, a winding drum assembly, a control box assembly, a steel wire rope and a manual release device. The motor drives the winding drum to realize that the industrial lifting door slides up and down along the guide rail to open and close the door through the steel wire rope. If the anti-falling safety device is not arranged, once the steel wire rope breaks and other faults occur, the lifting door can rapidly and freely fall, equipment can be damaged, and huge potential safety hazards exist. The anti-falling device commonly used at present usually adopts structures such as multi-section gears or worm and gear self-locking, and has the problems of high cost, complex maintenance and the like.

Disclosure of Invention

The utility model discloses a solve current problem, aim at providing a lifting means who prevents falling safety device and industrial door to prevent to promote the thing like industrial door and so on because of the accident of falling that the wire rope fracture caused.

In order to achieve the purpose, the side edge of the door plate slides up and down in the track through the pulley, the side edge of the door plate is also provided with a shaft, and the shaft is rotatably connected with the wheel body of the cam; the shaft is further provided with a torsion spring, and the preset torsion of the torsion spring can drive the wheel body to rotate, so that the protruding part of the cam is in contact with and locked with the inner wall of the track.

Preferably, the cam is provided with a connecting column, a steel wire rope for lifting the door plate is connected with the connecting column, the tension of the steel wire rope drives the cam to overcome the torsion of the torsion spring to turn, and the protruding part of the cam is not contacted with the inner wall of the track.

Preferably, one end of the torsion spring is fixed on the shaft long hole, and the other end of the torsion spring is fixed on the cylindrical boss of the cam. Preferably, the protruding portion of the cam is provided with a rubber layer having a serrated surface.

Preferably, the rubber layer is made of polyurethane rubber.

Preferably, a space is provided between the serrated rubber and the protruding part of the cam, so that a certain amount of extension and contraction of the serrated urethane rubber can be ensured when the serrated urethane rubber is extruded.

Preferably, a wheel body of the cam is provided with a limiting hole, and a limiting rod is arranged in the limiting hole; the shape of the limiting hole corresponds to the rotating track.

Preferably, the cam mechanism is two, and the convex parts of the cam are arranged in a mirror image mode and are respectively aligned with the inner walls of the two sides of the track.

Preferably, the two cams are linked through a connecting lever; the lever is a casting.

Preferably, two ends of the connecting lever are respectively and rotatably connected with the cylindrical bosses on the two cams.

The anti-falling safety device comprises: the two pairs of cam systems are connected with a bracket for mounting the cam systems, and the steel wire rope is connected with the cams above the cam systems. The cam mechanism includes: the cam and the serrated polyurethane rubber are integrally formed with the cam, and the serrated polyurethane rubber plays a braking role.

And the cam shaft are provided with torsional springs, the torsional springs fix the cam at an original position by torsion force, one end of each torsional spring is fixed on the shaft long hole, the other end of each torsional spring is fixed on the cylindrical boss of the cam, and the steel wire rope connecting column is connected with the steel wire rope. When the steel wire rope breaks and other accidents occur, the tension of the steel wire rope on the cam disappears, the cam rotates under the action of the torsion spring, and the sawtooth-shaped rubber on the cam compresses the rail surface to generate friction force so as to prevent the door panel from falling.

The utility model also provides a lifting means of industrial door, including track subassembly, motor element, door plant subassembly and electrical control box, install arbitrary a safety device that prevents falling.

Preferably, the anti-falling safety devices are respectively arranged at the left side and the right side of the door panel and provide pulling force through the steel wire rope and the motor.

Compared with the prior art, the utility model discloses a cam cooperation stereoplasm rubber, when wire rope fracture, the cam release leans on stereoplasm rubber and orbital frictional force to realize the lift gate braking, prevents that the lift gate from falling, has characteristics such as simple structure, with low costs, maintenance convenience.

Drawings

FIG. 1 is a schematic structural view of an industrial lift gate;

fig. 2 is a schematic structural diagram of an embodiment of the present invention;

FIG. 3 is a schematic structural view of a cam mechanism;

FIGS. 4a and 4b are schematic structural views of a cam

Fig. 5 is a schematic view of the working state of the embodiment of the present invention when the lift gate is normally lifted;

fig. 6 is a schematic view of the working state of the embodiment of the present invention when the lifting door is braked;

referring to the drawings, a fall prevention safety device A comprises a cam system 100, a cam 101, a sawtooth-shaped polyurethane rubber 102, a torsion spring 103, a cylindrical boss 104, a steel wire rope connecting column 105, a shaft 106, a limiting rod 107, a limiting hole 108, a connecting lever 109, a bracket 110, an industrial lifting door 300, a steel wire rope 200, a track 301, a motor assembly 302, a torsion spring balance system 303, a door panel assembly 304, an electrical control box 305, a guide rail pulley assembly 401 and a steel wire rope reel 402.

Detailed Description

To further illustrate the present invention, further details are provided below in conjunction with the drawings of preferred embodiments of the present invention.

In this embodiment, an industrial lift gate is taken as an example to describe the main structure of the industrial lift device provided by the present invention. Referring to fig. 1, an industrial lift gate 300 includes: track assembly 301, motor assembly 302, torsion spring counterbalance system 303, door panel assembly 304, electrical control box 305. Other various devices known in the art are also available, and their illustration and description are omitted. The utility model provides a fall-preventing safety device A is installed in the track component 301.

Referring to fig. 2, a fall arrest safety device a and a guide rail pulley assembly 401 are installed on an industrial lift door 300, and the lifting of the industrial lift door 300 is achieved through a guide rail 301.

Referring to fig. 3, the utility model relates to a fall-proof safety device A mainly has: two pairs of cam systems 100 are linked with a bracket 110 for mounting the cam systems, a wire rope 200 and a cam above the cam systems 100. Referring to fig. 4, the cam system 100 generally includes: the brake device comprises a cam 101, sawtooth-shaped polyurethane rubber 102, a torsion spring 103, a cylindrical boss 104, a steel wire rope connecting column 105, a shaft 106 and the cam 101, wherein the sawtooth-shaped polyurethane rubber 102 plays a braking role. The torsion of the torsion spring 103 fixes the cam 101 at the original position, one end of the torsion spring 103 is fixed on the long hole of the shaft 106, the other end is fixed on the cylindrical boss 104 of the cam 101, and the steel wire rope connecting column 105 is connected with the steel wire rope 200.

Referring to fig. 5, the fall arrest safety device is comprised of two pairs of upper and lower cam systems 100. The industrial lifting door 300 is pulled up by the power of the motor through the steel wire rope 200, the steel wire rope 200 pulls the upper cam 101 and the lower cam 101 to enable the upper cam 101 to overcome the torsion force of the torsion spring 103, the upper cam 101 and the lower cam 101 rotate around the shaft 106 in the arrow direction through the connecting lever 109, the upper cam 101 rotates to a certain position, the limiting rod 107 is in contact with the limiting hole 108, at the moment, the upper cam 101 and the rail 301 are in a non-contact state, and the steel wire rope 200 enables the industrial door 300 to freely lift through the anti-falling safety device.

Referring to fig. 6, when the wire rope 200 is broken, the tension on the wire rope connection post 105 is lost, and the upper and lower cams 101 rotate around the shaft 106 via the connection lever 109 under the torsion of the torsion spring 103, so that the serrated urethane rubber 102 is pressed against the guide rail 301. At the moment of door falling, because the sawtooth-shaped polyurethane rubber 102 and the guide rail 301 generate friction force F, the upper cam 101 and the lower cam 101 rotate around the shaft 106 according to the direction shown in the figure, positive pressure P is generated on the cam 101, the positive pressure P and the friction force F interact, and larger friction force is generated between the sawtooth-shaped polyurethane rubber 102 and the rail 301, so that the industrial door stops falling, and the braking effect is achieved.

The utility model provides a safety device that prevents falling through producing frictional force and producing positive pressure interact on cam 101 at cusp urethane rubber 102 and guide rail 301, simple structure, the action is reliable, can effectively play the braking action.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims

1. The utility model provides a prevent safety device that falls, the side of door plant passes through the pulley and slides from top to bottom in the track, its characterized in that:

the side edge of the door plate is also provided with a shaft, and the shaft is rotatably connected with a wheel body of the cam;

the shaft is also provided with a torsion spring, and the torsion force of the torsion spring can drive the wheel body to rotate, so that the protruding part of the cam is contacted and locked with the inner wall of the track.

2. The fall protection safety device of claim 1, wherein: the cam is provided with a connecting column, a steel wire rope for lifting the door plate is connected with the connecting column, the tension of the steel wire rope drives the cam to overcome the torsion of the torsion spring to turn, and the convex part of the cam is not contacted with the inner wall of the track.

3. The fall protection safety device of claim 1, wherein: one end of the torsion spring is fixed on the shaft long hole, and the other end of the torsion spring is fixed on the cylindrical boss of the cam.

4. A fall arrest safety device as claimed in any one of claims 1 to 3, wherein: the convex part of the cam is provided with a rubber layer with a serrated surface.

5. The device of claim 4 wherein: the rubber layer is made of polyurethane rubber.

6. The device of claim 4 wherein: and a spacing space is arranged between the serrated rubber and the convex part of the cam.

7. The fall protection safety device of claim 1, wherein: a wheel body of the cam is provided with a limiting hole, and a limiting rod is arranged in the limiting hole; the shape of the limiting hole corresponds to the rotating track.

8. A fall arrest safety device as claimed in any one of claims 1 to 3, wherein: the cam mechanism is two, and the bulge of cam is the mirror image setting, aligns orbital both sides inner wall respectively.

9. The device of claim 8, wherein: the two cams are linked through a connecting lever.

10. The device of claim 9 wherein: the two ends of the connecting lever are respectively and rotatably connected with the cylindrical bosses on the two cams.

11. The utility model provides a lifting means of industrial door, includes track subassembly, motor element, door plant subassembly and electrical control box, its characterized in that: a fall arrest safety device as claimed in any of claims 1 to 10 is fitted.

12. The industrial door lifting apparatus according to claim 11, wherein: the anti-falling safety devices are respectively arranged on the left side and the right side of the door plate and provide pulling force through the steel wire rope and the motor.