CN220703164U

CN220703164U - High-altitude operation safety protection mechanism

Info

Publication number: CN220703164U
Application number: CN202322285868.8U
Authority: CN
Inventors: 邓正新; 邓学晟; 张建君; 杨俊君; 邓冬林
Original assignee: Hunan Zhengxin Technology Development Co ltd
Current assignee: Hunan Zhengxin Technology Development Co ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2024-04-02
Anticipated expiration: 2033-08-24

Abstract

The utility model discloses a safety protection mechanism for high-altitude operation, which comprises four lifting fences arranged on the periphery of a top plate of a scissor-fork type high-altitude operation platform, wherein the top of the scissor-fork type high-altitude operation platform is connected with the lifting fences by using a rotation limiting device, so that an operator can conveniently and outwards rotate the lifting fences to enter the lifting fences, meanwhile, when the lifting fences need to lift, the worm of a worm and gear assembly arranged on a U-shaped pipe is rotated, and then a transmission shaft can be matched with a bevel gear pair to enable threaded rod thread sleeve assemblies on two sides to stretch out and draw back to drive ejector rods on two sides to move, and the ejector rods are used for limiting when being extruded with the inner wall of a limiting pipe, otherwise, the U-shaped pipe can be pulled out outwards, the whole height is changed, the safety protection mechanism is convenient for real-time operation after the operator enters the top of the platform, and has strong practicability and the protection effect is improved.

Description

High-altitude operation safety protection mechanism

Technical Field

The utility model relates to the technical field of aerial work platforms, in particular to an aerial work safety protection mechanism.

Background

The scissor type aerial work platform is special equipment for aerial work with wide application, and in order to protect staff at the top of the platform, a safety fence is arranged at the top of the platform, the safety fence consists of two U-shaped fences and two side blocking frames, when the existing safety fence is used, as the two U-shaped fences which mainly play roles in the safety fence are directly fixed at the top of the platform, the height of the whole safety fence cannot be adjusted after the design is finished, and the height of the whole safety fence cannot be adjusted up and down according to the actual conditions of different operators, certain limitations and disadvantages exist in actual use, for example, CN212773365U discloses a construction engineering aerial work safety protection mechanism, which comprises a movable base and a lifting platform arranged at the top of the movable base, the top of the lifting platform is provided with a safety fence component, the safety fence component comprises two U-shaped fences and two side blocking frames, through holes corresponding to the U-shaped fences are formed in the top surface of the lifting platform, and two ends of the U-shaped fences penetrate through the bottom of the lifting platform; through the through hole, the side seat, the spring chamber, the push block, the limit clamping rod, the limit clamping hole, the rectangular notch, the rotary pulling block and the pulling column, the height of the U-shaped fence can be adjusted up and down, so that the height of the whole safety protection fence assembly can be flexibly adjusted up and down according to the actual conditions of different operators, the use flexibility of the safety protection fence assembly is greatly improved, safety protection can be conveniently carried out on operators with different heights and different body types, but the operation on a lifting platform is inconvenient when the rotary pulling block is operated to pull with force, and based on the high-altitude operation safety protection mechanism, the high-altitude operation safety protection mechanism is designed, and the problem is solved.

Disclosure of Invention

The utility model aims to provide a safety protection mechanism for high-altitude operation, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an aerial work safety protection mechanism, includes installs four lift rail around shearing fork aerial work platform top flat board, every side all around shearing fork aerial work platform's top flat board upper surface interval welding has rotation stop device, and same side is two be fixed with the lift rail between the rotation stop device, the lift rail is including a pair of spacing pipe of the vertical setting of interval, two the level is fixed with the crossbeam between the outer wall of spacing pipe, two inversion grafting has U type pipe between the inner chamber of spacing pipe, threaded rod thread bush subassembly is all installed through bearing vertical rotation to the inner chamber both sides of U type pipe, threaded rod thread bush subassembly's thread bush bottom both sides are all rotated and are installed the ejector pin, the ejector pin runs through U type pipe and the laminating of the inner wall of spacing pipe, the transmission shaft is installed through bearing horizontal rotation to the inner chamber top of U type pipe, the both ends of transmission shaft are connected through the threaded rod top of bevel gear pair and threaded rod thread bush subassembly, run through between the outer wall middle part of transmission shaft and the surface of U type pipe and be provided with worm wheel subassembly.

Preferably, the rotation limiting device comprises a groove steel section and L-shaped blocks fixed at the bottom of an inner cavity of the groove steel section through bolts, mounting notches are symmetrically and horizontally arranged on two sides of the inner wall of the groove steel section, telescopic square pipe sections are horizontally fixed on the inner side walls of the mounting notches, a movable cylinder is fixed between the outer ends of the telescopic square pipe sections, a horizontal supporting plate is rotatably installed in the middle of the outer wall of the movable cylinder, a C-shaped steel section with a sealed outer end is fixed on the outer side of the bottom of the horizontal supporting plate, T-shaped blocks are vertically clamped in the C-shaped steel section, horizontal grooves are formed in the inner lateral surfaces of the L-shaped blocks, spring rods are horizontally fixed on the inner walls of the horizontal grooves, the bottoms of the T-shaped blocks are slidably clamped in the horizontal grooves, the outer ends of the spring rods are fixedly connected with the outer surfaces of the T-shaped blocks, and miniature induction alarms are installed between the inner walls of the T-shaped blocks and the inner lateral surfaces of the L-shaped blocks.

Preferably, a spring reel wound with a wire is mounted on the outer wall of the U-shaped tube of the lifting fence laterally.

Preferably, the outer end of the worm and gear assembly is rotatably provided with a plastic five-star handle bolt.

Preferably, universal balls attached to the inner walls of the mounting notches are mounted on two sides of the bottom of the movable cylinder.

Preferably, dustproof hairbrush strips with attached end faces are fixed above two sides of the inner wall of the horizontal groove.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the lifting fence is installed through the rotation limiting devices fixed on the periphery of the top of the scissor type aerial work platform, so that the lifting fence can be conveniently rotated outwards to enable operators to enter, meanwhile, when the lifting fence needs to lift, the worm of the worm and gear assembly installed on the U-shaped pipe is rotated, and then the transmission shaft can be matched with the bevel gear pair to enable the threaded rod threaded sleeve assemblies on two sides to stretch out and draw back, so that the ejector rods on two sides are driven to move, and are used for limiting when the ejector rods are extruded with the inner wall of the limiting pipe, otherwise, the U-shaped pipe can be pulled outwards, the whole height is changed, and the device is convenient for operators to operate in real time after entering the top of the platform, and has strong practicability and improved protection effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the lifting fence of FIG. 1;

FIG. 3 is a schematic view of a rear portion of the outer wall of the U-tube of FIG. 2;

FIG. 4 is a schematic view of the rotation limiting device in FIG. 1;

FIG. 5 is a cross-sectional view taken at A-A of FIG. 4.

In the drawings, the list of components represented by the various numbers is as follows:

the device comprises a 1-scissor type aerial working platform, a 2-rotation limiting device, a 3-lifting rail, a 30-limiting pipe, a 31-cross beam, a 32-U-shaped pipe, a 33-threaded rod threaded sleeve component, a 34-ejector rod, a 35-transmission shaft, a 36-worm and gear component, a 37-plastic five-star handle bolt, a 20-groove steel section, a 21-mounting notch, a 22-telescopic square pipe section, a 23-movable cylinder, a 24-horizontal supporting plate, a 25-C-shaped steel section, a 26-L-shaped block, a 27-spring rod, a 28-T-shaped block and a 29-miniature induction alarm.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides an aerial work safety protection mechanism, four lifting fences 3 around the flat board in top of the existing commercial scissor type aerial work platform 1 are installed, every side around the flat board in top of scissor type aerial work platform 1 is all around the interval welding has rotation stop device 2, and the rotation stop devices 2 at the both ends of adjacent side are close to each other, simultaneously, be fixed with lifting fences 3 between two rotation stop devices 2 of same side, lifting fences 3 include a pair of spacing pipes 30 that the interval set up vertically, be fixed with crossbeam 31 horizontally between the outer wall of two spacing pipes 30, crossbeam 31 can set up a plurality ofly as required, the U type pipe 32 of invertedly grafting between the inner chamber of two spacing pipes 30, threaded rod thread bush subassembly 33 is all installed through the vertical rotation of bearing to the inner chamber both sides of U type pipe 32, threaded rod thread bush subassembly 33's thread bush bottom both sides are all installed ejector pin 34 in the rotation, the outer end of the ejector rod 34 penetrates through the U-shaped pipe 32 to be attached to the inner wall of the limiting pipe 30 through a shearing cambered surface, a transmission shaft 35 is horizontally rotatably installed above the inner cavity of the U-shaped pipe 32 through a bearing, two ends of the transmission shaft 35 are connected with the top of a threaded rod of the threaded rod thread sleeve assembly 33 through a bevel gear pair, a worm gear and worm assembly 36 is arranged between the middle part of the outer wall of the transmission shaft 35 and the surface of the U-shaped pipe 32 in a penetrating manner, the worm is horizontally rotatably installed on the U-shaped pipe 32 in a penetrating manner, a worm gear is fixedly sleeved on the outer wall of the transmission shaft 35, the outer end of the worm gear and worm assembly 36 is rotatably installed with a plastic five-star handle bolt 37 through a shearing opening and a rotating shaft, the worm is convenient to manually operate, meanwhile, a spring reel wound on a wire is installed on the outer wall of the U-shaped pipe 32 of the lateral lifting fence 3, and the wire is connected on a manual controller circuit of the shearing fork type aerial work platform 1 in series, when the height of the lifting fence 3 is convenient to change, the manual controller of the scissor type aerial work platform 1 can normally receive electricity.

Referring to fig. 4-5, the rotation limiting device 2 includes a channel steel section 20 and an L-shaped block 26 fixed at the bottom of an inner cavity of the channel steel section 20 through bolts, mounting notches 21 are symmetrically and horizontally arranged on two sides of the inner wall of the channel steel section 20, telescopic square pipe sections 22 are horizontally fixed on the inner side walls of the mounting notches 21, a movable cylinder 23 is fixed between the outer ends of the two telescopic square pipe sections 22, a horizontal supporting plate 24 is rotatably installed in the middle of the outer wall of the movable cylinder 23, a C-shaped steel section 25 with a sealed outer end is fixed on the outer side of the bottom of the horizontal supporting plate 24, a T-shaped block 28 is vertically clamped in the C-shaped steel section 25, a horizontal groove is formed in the inner lateral surface of the L-shaped block 26, a spring rod 27 is horizontally fixed on the inner wall of the horizontal groove, the bottom of the T-shaped block 28 is slidably clamped in the horizontal groove, a miniature sensing alarm 29 is installed between the outer end of the spring rod 27 and the outer surface of the T-shaped block 28 and the inner vertical surface of the L-shaped block 26, and when an operator's toe misoperation makes the T-shaped block 28 move, the alarm 28 is generated, and abrupt separation of the T-shaped block 28 and the C-shaped steel 25 is prevented.

Wherein, universal balls attached to the inner wall of the mounting notch 21 are arranged on both sides of the bottom of the movable cylinder 23, so as to support the movable cylinder 23 and prevent the telescopic square tube section 22 from bending; the dustproof hairbrush strips attached to the end faces are fixed above the two sides of the inner wall of the horizontal groove, dust entering is reduced, and the spring rod 27 is prevented from being affected to stretch by sundries.

When the aerial work safety protection mechanism is used, the safety protection mechanism comprises the following components: firstly, welding the channel steel section 20 of the rotation limiting device 2 on the top of the scissor type aerial work platform 1, then welding a limiting pipe on the top of the horizontal supporting plate 24, completing the whole assembly, when the lifting fence 3 needs to be opened, pushing the T-shaped block 28 to move outwards to separate the T-shaped block from the C-shaped steel section 25, and then pulling the horizontal supporting plate 24 outwards, thus completing the rotation of the lifting fence 3 and rotating downwards;

when the height of the lifting fence 3 needs to be changed, the worm is rotated, and then the transmission shaft 35 can be matched with the bevel gear pair to enable the threaded rod thread sleeve assemblies 33 on two sides to stretch out and draw back, the ejector rods 34 on two sides are driven to move, the ejector rods 34 are used for limiting when being extruded with the inner wall of the limiting tube 30, otherwise, the U-shaped tube 32 can be pulled out outwards, and the height change is completed.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The utility model provides an aerial work safety protection mechanism, includes four lift rail (3) of installing around cutting fork aerial work platform (1) top flat board, its characterized in that: the utility model provides a scissors fork aerial working platform (1) top flat upper surface all around every side interval welding has rotation stop device (2), and same side is two be fixed with between rotation stop device (2) and go up and down rail (3), go up and down rail (3) including a pair of spacing pipe (30) of interval vertical setting, two be fixed with crossbeam (31) between the outer wall of spacing pipe (30), two inversion grafting has U type pipe (32) between the inner chamber of spacing pipe (30), threaded rod thread bush subassembly (33) are all installed through bearing vertical rotation to the inner chamber both sides of U type pipe (32), threaded rod thread bush subassembly (33) thread bush bottom both sides are all rotated and are installed ejector pin (34), ejector pin (34) run through U type pipe (32) and the laminating of the inner wall of spacing pipe (30), transmission shaft (35) are installed through bearing horizontal rotation to the inner chamber top of U type pipe (32), the both ends of transmission shaft (35) are connected with threaded rod thread bush subassembly (33) top through the taper pair, threaded rod thread bush subassembly (33) middle part and worm wheel (36) are run through between the surface of the worm (36).

2. An aerial work safety device as claimed in claim 1, wherein: the utility model provides a rotation stop device (2) is including channel steel section (20) and through bolt fastening at L type piece (26) of its inner chamber bottom, the equal symmetry level in inner wall both sides of channel steel section (20) is provided with installation incision (21), the inside wall level of installation incision (21) is fixed with flexible square tube section (22), two be fixed with between the outer end of flexible square tube section (22) and remove cylinder (23), remove the outer wall middle part rotation of cylinder (23) and install horizontal layer board (24), the bottom outside of horizontal layer board (24) is fixed with C type steel section (25) that the outer end was sealed, vertical joint has T type piece (28) in C type steel section (25), the inboard lateral surface of L type piece (26) is provided with horizontal recess, the inner wall level of horizontal recess is fixed with spring beam (27), the bottom slip joint of T type piece (28) is in horizontal recess, the outer end of spring beam (27) is connected with the surface mounting of T type piece (28), install miniature alarm surface between the inner wall (26) of T type piece (28) and the vertical alarm of L type piece (29).

3. An aerial work safety device as claimed in claim 1, wherein: and a spring winding drum for winding the wire is arranged on the outer wall of the U-shaped tube (32) of the lifting fence (3) in the lateral direction.

4. An aerial work safety device as claimed in claim 1, wherein: the outer end of the worm and gear assembly (36) is rotatably provided with a plastic five-star handle bolt (37).

5. An aerial work safety device as claimed in claim 2, wherein: and universal balls attached to the inner walls of the mounting notches (21) are mounted on two sides of the bottom of the movable cylinder (23).

6. An aerial work safety device as claimed in claim 2, wherein: dustproof hairbrush strips attached to the end faces are fixed above the two sides of the inner wall of the horizontal groove.