A multi-panel liftgate breakaway device

Abstract

The utility model relates to the technical field of lift door protection, and disclose a kind of multiple lift door anti-breaker, applied to multiple lift door body, the outer frame is equipped in multiple lift door body outside;The novel scheme is effectively detected whether the running speed of steel wire rope is normal by setting laser speed sensor body, when steel wire rope is broken, laser speed sensor body is opened by controller control solenoid valve body, at this time, the high-pressure gas in high-pressure gas cylinder is rapidly inflated to air bag assembly by corrugated transmission pipe, air bag assembly after inflation rapidly unfolds and effectively supports multiple lift door body in the process of falling, instantaneous impact absorption, reduce kinetic energy, while the reaction force of air bag assembly is effectively dispersed by several hydraulic dampers body Absorption, reduce the possibility of damage of limiting frame and multiple lift door body on its upper end, since air bag assembly and limiting frame can be quickly disassembled, thereby improving the convenience of overhaul replacement.

Description

Technical Field

[0001] This utility model belongs to the field of lifting door protection technology, specifically a multi-piece lifting door anti-breakage device. Background Technology

[0002] Multi-panel lifting doors typically refer to lifting door structures composed of multiple door panels, mainly used in large entrances and exits of industrial plants, warehouses, garages, etc. To prevent the door from suddenly falling during operation due to malfunctions such as broken wire ropes or broken chains, safety protection devices are often installed around the door.

[0003] Patent CN218627763U discloses an industrial lifting door designed to prevent steel wire rope breakage. The door includes a door frame, a lifting door, a first winding roller, a second winding roller, and a steel wire rope. A protrusion is fixedly connected to the periphery of the extrusion plate. This invention addresses the issue of slippage or steel wire rope breakage at the shaft between the first and second winding rollers. When the other end of the steel wire rope cannot be limited by the winding roller's rotation, the lifting door descends rapidly. When a laser speed sensor detects that the linear speed of the lifting door exceeds the normal slow descent speed, the isomorphic PLC controller activates the electric telescopic rod to extend. This causes the extrusion plates on both sides of the lifting door to extend rapidly via the electric telescopic rod, quickly engaging the protrusion with the toothed groove in the inner wall of the door frame. This achieves rapid contact and limitation of the lifting door, preventing injury to workers from the rapid descent of the door.

[0004] However, the aforementioned industrial overhead door designed to prevent wire rope breakage still has the following shortcomings:

[0005] Although the aforementioned device can quickly extend the extrusion plates on both sides of the lifting door through an electric telescopic rod and quickly engage the protrusions with the toothed grooves in the inner wall of the door frame, thus achieving rapid contact and limiting of the lifting door, the protrusions and the toothed grooves in the inner wall of the door frame are subjected to strong friction due to the impact force of the rapid descent of the lifting door. This results in severe damage to the contact area between the two, requiring replacement to ensure the safety of the lifting door in the next operation. For the toothed grooves that are integrally formed with the door frame, replacement is difficult and costly. Therefore, we propose a multi-piece lifting door anti-breakage device. Utility Model Content

[0006] In response to the above situation and to overcome the shortcomings of the existing technology, this utility model provides a multi-piece lifting door anti-breakage device. It effectively solves the problem that although the existing device can quickly extend the extrusion plates on both sides of the lifting door through the electric telescopic rod and quickly engage the protrusions with the toothed grooves in the inner wall of the door frame to achieve rapid contact and limitation of the lifting door, the protrusions and the toothed grooves in the inner wall of the door frame are subjected to strong friction due to the impact force of the rapid descent of the lifting door, resulting in serious damage to the contact parts of the two. Replacement is required to ensure the safety of the lifting door in the next operation. For the toothed grooves that are integrally formed with the door frame, replacement is difficult and costly.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-panel lifting door anti-breakage device, applied to a multi-panel lifting door body, wherein an outer frame is provided on the outer side of the multi-panel lifting door body, and a set of laser speed sensor bodies are symmetrically arranged on the surface of the outer frame near the multi-panel lifting door body, and a steel wire rope is provided in front of the laser speed sensor body. A protective component is provided on the surface of the outer frame away from the multi-panel lifting door body, and the protective component includes a support bracket, which is fixed to the surface of the outer frame. A high-pressure gas cylinder is clamped inside the support bracket, and a solenoid valve body is provided at the outlet end of the high-pressure gas cylinder. A corrugated transmission pipe is provided at the top of the solenoid valve body, and a threaded joint is connected to the outer side of the bottom end of the corrugated transmission pipe.

[0008] Preferably, the protective assembly further includes a limiting frame, which is disposed on the outside of the threaded joint. A set of limiting grooves are symmetrically opened on both sides of the limiting frame. Several hydraulic damper bodies are evenly distributed at the top of the inner side of the limiting frame. An airbag assembly is connected to the lower end of the hydraulic damper body. A set of elastic limiting strips are symmetrically attached to the bottom of the airbag assembly. The airbag assembly includes a support plate, which is connected to the lower end of the hydraulic damper body. A set of inner grooves are symmetrically opened on both sides of the support plate. Several springs are evenly distributed inside the inner grooves. A limiting plate is connected to one end of each spring near the opening of the inner groove. An airbag body is disposed at the bottom of the support plate.

[0009] Preferably, the support plate forms an engaging sliding structure with the limiting plate and the limiting groove, and the limiting plate forms an elastic structure with the support plate through a spring.

[0010] Preferably, the corrugated transmission pipe is connected to the airbag body through a threaded joint, and the airbag body is engaged inside the limiting frame.

[0011] Preferably, the airbag body is composed of a top accordion fold and a bottom roll-up part, the elastic limiting strip is tightly fitted to the airbag body, and the elastic limiting strip is locked inside the bottom of the limiting frame.

[0012] Preferably, when the airbag body is inflated, the elastic limiting strip bends, the top accordion-style fold in the airbag body pushes the bottom roll-up part out of the limiting frame, and the bottom roll-up part in the airbag body is inverted when unfolded.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. By setting up a laser speed sensor, the operating speed of the wire rope can be effectively detected. When the wire rope breaks, the laser speed sensor controls the solenoid valve to open through the controller. At this time, the high-pressure gas inside the high-pressure gas cylinder quickly inflates the airbag assembly through the corrugated transmission pipe. The inflated airbag assembly quickly deploys and effectively supports the multiple lifting door bodies during descent, absorbing the impact and reducing the kinetic energy of the fall. At the same time, the reaction force of the airbag assembly is effectively dispersed and absorbed by several hydraulic dampers, reducing the possibility of damage to the limit frame and the multiple lifting door bodies above it. Since the airbag assembly and the limit frame can be quickly disassembled, the convenience of maintenance and replacement is improved.

[0015] 2. By squeezing the limiting plate inward, it is concealed in the inner groove. At this time, there is no restraint between the support plate and the limiting frame, which facilitates the quick assembly and disassembly of the airbag assembly and the limiting frame. When the airbag body is not inflated, there is a corresponding frictional force between it and the limiting frame. At this time, the elastic limiting strip is sufficient to support the airbag assembly and prevent the airbag body from falling out of the limiting frame. When the airbag body is inflated and unfolded, it applies force to the elastic limiting strip. The elastic limiting strip bends under the force and separates directly from the limiting frame without restricting the airbag body. When unfolded, the inverted bottom of the airbag body effectively provides a three-dimensional protective space, effectively protecting personnel and items under multiple lifting door bodies. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0020] Figure 3 This is a partial three-dimensional structural diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the limiting frame of this utility model;

[0022] Figure 5 This is a partial cross-sectional structural diagram of the present invention.

[0023] In the diagram: 1. Multiple lifting door body panels; 2. Outer frame; 3. Laser speed sensor body; 4. Steel wire rope; 5. Protective components; 501. Support frame; 502. High-pressure gas cylinder; 503. Solenoid valve body; 504. Corrugated transmission pipe; 505. Threaded joint; 506. Limiting frame; 507. Limiting groove; 508. Hydraulic damper body; 509. Airbag assembly; 509a. Support plate; 509b. Inner groove; 509c. Spring; 509d. Limiting plate; 509e. Airbag body; 510. Elastic limiting strip. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5A multi-panel lifting door anti-breakage device is applied to a multi-panel lifting door body 1. An outer frame 2 is provided on the outer side of the multi-panel lifting door body 1. A set of laser speed sensor bodies 3 are symmetrically arranged on the surface of the outer frame 2 near the multi-panel lifting door body 1. A steel wire rope 4 is provided in front of the laser speed sensor bodies 3. A protective component 5 is provided on the surface of the outer frame 2 away from the multi-panel lifting door body 1. The protective component 5 includes a support frame 501, which is fixed to the surface of the outer frame 2. A high-pressure gas cylinder 502 is held inside the support frame 501. A solenoid valve body 503 is provided at the outlet of the high-pressure gas cylinder 502. A corrugated transmission pipe 504 is provided at the top of the solenoid valve body 503. A threaded connector 505 is connected to the outer side of the bottom end of the corrugated transmission pipe 504. The protective component 5 also includes a limiting frame 506, which is located outside the threaded connector 505. A set of limiting grooves 507 are symmetrically opened on both sides of the limiting frame 506. Several hydraulic... The damper body 508 has an airbag assembly 509 connected to its lower end. A set of elastic limit strips 510 are symmetrically attached to the bottom of the airbag assembly 509. The laser speed sensor body 3 effectively detects whether the running speed of the wire rope 4 is normal. When the wire rope 4 breaks, the laser speed sensor body 3 controls the solenoid valve body 503 to open through the PLC controller. At this time, the high-pressure gas inside the high-pressure gas cylinder 502 quickly inflates the airbag assembly 509 through the corrugated transmission pipe 504. After inflation, the airbag assembly 509 quickly unfolds and effectively supports the multiple lifting door bodies 1 during descent, absorbing the impact instantly and reducing the kinetic energy of the fall. At the same time, the reaction force of the airbag assembly 509 is effectively dispersed and absorbed by several hydraulic damper bodies 508, reducing the possibility of damage to the limit frame 506 and the multiple lifting door bodies 1 above it. Since the airbag assembly 509 and the limit frame 506 can be quickly disassembled, the convenience of maintenance and replacement is improved.

[0026] The airbag assembly 509 includes a support plate 509a, which is connected to the lower end of the hydraulic damper body 508. A set of inner grooves 509b are symmetrically formed on both sides of the support plate 509a. Several springs 509c are evenly distributed inside the inner grooves 509b. A limiting plate 509d is connected to one end of each spring 509c near the opening of the inner groove 509b. The support plate 509a and the limiting groove 507 form a sliding engagement structure through the limiting plate 509d. The limiting plate 509d is connected to the support plate 509a through the springs 509c. The support plate 509a forms an elastic structure, with an airbag body 509e located at its bottom. Further, the corrugated transmission pipe 504 is connected to the airbag body 509e via a threaded connector 505. The airbag body 509e is engaged inside the limiting frame 506. Furthermore, the airbag body 509e is composed of a top accordion-style folding section and a bottom retractable section. The elastic limiting strip 510 is tightly fitted to the airbag body 509e and is secured to the inner bottom of the limiting frame 506. During inflation, the elastic limiting strip 510 deforms and bends, and the top accordion-style fold in the airbag body 509e precisely pushes the bottom retractable part out of the limiting frame 506. When the bottom retractable part in the airbag body 509e unfolds, it forms an inverted U-shape, and by pressing the limiting plate 509d inward, it is concealed in the inner groove 509b. At this time, there is no restraint between the support plate 509a and the limiting frame 506, which facilitates quick assembly and disassembly between the airbag assembly 509 and the limiting frame 506. When the airbag body 509e is not inflated, there is a gap between it and the limiting frame 506. Under the corresponding frictional force, the elastic limiting strip 510 is sufficient to support the airbag assembly 509, preventing the airbag body 509e from falling out of the limiting frame 506. When the airbag body 509e inflates and unfolds, it applies force to the elastic limiting strip 510. The elastic limiting strip 510 bends under the force and separates directly from the limiting frame 506, without restricting the airbag body 509e. When unfolded, the airbag body 509e, with its inverted U-shaped bottom, effectively provides a three-dimensional protective space, effectively protecting the personnel and items below the multiple lifting door bodies 1.

Claims

1. A multi-panel liftgate breakaway device, characterized by: An application is made to a multi-section lifting door body (1). The multi-section lifting door body (1) is provided with an outer frame (2) on the outside. A set of laser speed sensor bodies (3) are symmetrically provided on the surface of the outer frame (2) near the multi-section lifting door body (1). A steel wire rope (4) is provided in front of the laser speed sensor body (3). A protective component (5) is provided on the surface of the outer frame (2) away from the multi-section lifting door body (1). The protective component (5) includes a support frame (501). The support frame (501) is fixed on the surface of the outer frame (2). A high-pressure gas cylinder (502) is installed inside the support frame (501). A solenoid valve body (503) is provided at the outlet end of the high-pressure gas cylinder (502). A corrugated transmission pipe (504) is provided at the top of the solenoid valve body (503). A threaded joint (505) is connected to the outer side of the bottom end of the corrugated transmission pipe (504).

2. A multi-panel liftgate door break preventer as defined in claim 1, wherein: The protective component (5) also includes a limiting frame (506), which is located outside the threaded joint (505). A set of limiting grooves (507) are symmetrically opened on both sides of the limiting frame (506). Several hydraulic damper bodies (508) are evenly distributed at the top of the limiting frame (506). An airbag assembly (509) is connected to the lower end of each hydraulic damper body (508). A set of elastic limiting strips (510) are symmetrically attached to the bottom of the airbag assembly (509). The airbag assembly (509) includes a support plate (509a), which is connected to the lower end of the hydraulic damper body (508). A set of inner grooves (509b) are symmetrically opened on both sides of the support plate (509a). A number of springs (509c) are evenly distributed inside the inner grooves (509b). One end of each spring (509c) near the opening of the inner groove (509b) is connected to a limit plate (509d). The airbag body (509e) is provided at the bottom of the support plate (509a).

3. A multi-panel liftgate door break preventer as defined in claim 2, wherein: The support plate (509a) forms an engaging sliding structure with the limiting plate (509d) and the limiting groove (507), and the limiting plate (509d) forms an elastic structure with the support plate (509a) through the spring (509c).

4. A multi-panel liftgate door break preventer as defined in claim 2, wherein: The corrugated transmission pipe (504) is connected to the airbag body (509e) through a threaded joint (505), and the airbag body (509e) is engaged inside the limiting frame (506).

5. A multi-panel liftgate door break preventer as defined in claim 2, wherein: The airbag body (509e) is composed of a top accordion fold and a bottom roll-up part. The elastic limiting strip (510) is closely fitted to the airbag body (509e), and the elastic limiting strip (510) is locked inside the bottom of the limiting frame (506).

6. A multi-panel liftgate door break preventer as defined in claim 2, wherein: When the airbag body (509e) is inflated, the elastic limiting strip (510) deforms and bends, and the top accordion-style fold in the airbag body (509e) pushes the bottom roll-up part out of the limiting frame (506). When the bottom roll-up part in the airbag body (509e) is unfolded, it is inverted U-shaped.

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