CN108547440B

CN108547440B - Scaffold lifting device for building

Info

Publication number: CN108547440B
Application number: CN201810481250.XA
Authority: CN
Inventors: 苏涛; 欧阳刚; 俞燕; 陈冬; 苏姝; 欧阳桦
Original assignee: Chongqing Industry Polytechnic College
Current assignee: Anhui Jiuhao Construction Engineering Co.,Ltd.
Priority date: 2018-05-18
Filing date: 2018-05-18
Publication date: 2020-03-20
Anticipated expiration: 2038-05-18
Also published as: CN108547440A

Abstract

The invention relates to a lifting assembly of a scaffold for a building, in particular to a lifting device of the scaffold for the building, which comprises a controller, a plurality of electric hoists, an anti-falling mechanism and hydraulic sensors, wherein the electric hoists are matched with each other, a vertical sliding cavity is formed below a supporting seat of the building, a sliding piston is arranged at the bottom of the supporting seat and is vertically and slidably connected in the sliding cavity, a reset spring is arranged in the sliding cavity, the sliding cavity is communicated with the hydraulic sensors, the controller is used for controlling the electric hoists to lower the scaffold at a set distance, and the controller regulates and controls the electric hoists according to hydraulic data transmitted by the hydraulic sensors until all the hydraulic sensors display the same hydraulic number. The invention provides a method for detecting the stress load of an electric hoist under the condition of not changing the structure of the electric hoist.

Description

Scaffold lifting device for building

Technical Field

The invention relates to a component for lifting a scaffold for a building, in particular to a lifting device for the scaffold for the building.

Background

In the existing building construction technology, the attached lifting scaffold is widely applied due to the fact that the attached lifting scaffold consumes less steel, the appearance is neat and attractive, and the construction progress is fast. The lifting process equipment generally adopts an electric hoist, the upper hook of the electric hoist is connected to a building, the lower hook is connected to the bottom of the scaffold, the electric hoist is started, and the scaffold body is lifted or lowered through the forward and reverse rotation of the electric hoist. Often many electric block move simultaneously, realize the whole lift of scaffold frame. The electric block operation that appears easily like this in the operation process has the condition that has slowly soon, leads to the dead weight of scaffold frame to redistribute on different electric block, and individual electric block bears the load less or not completely, and the phenomenon that load concentrates appears in individual electric block, causes support body deformation or electric block chain fracture, support body tenesmus. In order to prevent the situation, the load condition of each electric hoist must be monitored, and when the electric hoist is overloaded, the electric hoist can be automatically adjusted and automatically alarms. But the electric hoist is difficult to be improved on the basis of the electric hoist because the electric hoist needs to be stressed actually.

Disclosure of Invention

The invention provides a lifting device for detecting whether the stress load of an electric hoist is balanced or not under the condition of not changing the structure of the electric hoist.

The basic scheme provided by the invention is as follows: a scaffold lifting device for a building comprises a controller, a plurality of electric hoists which are paired with each other, an anti-falling mechanism and a hydraulic sensor, wherein the upper hook of each electric hoist is connected to a building, the lower hook of each electric hoist is connected to the bottom of a scaffold, the anti-falling mechanism comprises a stopping rack fixed on the scaffold, a stopping mechanism fixed on the building and a guide rail fixed on the scaffold, the stopping mechanism comprises a supporting seat fixed on the building, a resetting elastic piece and a stopping piece, the stopping piece is rotatably connected to the supporting seat through the resetting elastic piece, the stopping piece is provided with a speed swing rod and a stopping ejector rod, the speed swing rod and the stopping ejector rod are integrally formed, the building is provided with a vertical sliding cavity below the supporting seat, the bottom of the supporting seat is provided with a sliding piston, the sliding piston is vertically and slidably connected into the sliding cavity, the resetting spring is arranged in the sliding, the controller regulates and controls the electric hoist according to the hydraulic data transmitted by the hydraulic sensors until all the hydraulic sensors display the same hydraulic number; the sliding cavity is further connected with a pressurizing channel, the pressurizing channel is connected with a hydraulic arm, the hydraulic arm is connected with a check block for stopping the scaffold from dropping, and the side face of the check block is attached to the side wall of the guide rail when the hydraulic arm works.

The principle is as follows: the tension of the electric hoist is not directly sensed, the electric hoist is selectively controlled to lower the scaffold, the falling scaffold is propped by the anti-falling mechanism, the load of the electric hoist above the corresponding vertical position of the anti-falling mechanism is judged by the load force of each anti-falling mechanism, and the load of the stop mechanism is detected by the hydraulic sensor. In addition, the scheme also improves the stress mode of the anti-falling mechanism, and the anti-falling mechanism can be more flexibly loaded to fall by means of the reset spring and hydraulic pressure. In addition this scheme still produces impulsive force drive hydraulic arm when load scaffold frame tenesmus, withhold the lateral wall of guide rail by hydraulic arm drive dog, the reinforcing guide rail bears the load of yawing force, because when the scaffold frame descends, the action was stopped to prior art and is equipped with the pulley with guide rail sliding connection, the scaffold frame of whereabouts is withstood to the stopper when scaffold frame descends unusually, pulley on the stopper has an impact to the guide rail, the guide rail can atress be out of shape under huge load, even lose effect, consequently, it is necessary with the load of pulley contact position to strengthen the guide rail. Meanwhile, the stop block can also play a role in propping the scaffold.

Compared with the prior art, the scheme has the advantages that:

1. load of the electric hoist pulling scaffold is indirectly displayed through load of the scaffold on the anti-falling mechanism, improvement on the electric hoist is not needed, and the electric hoist is made to be more stable in structure.

2. The anti-falling mechanism elastic load scaffold can have longer time load impact when falling, and reduces the impact on the lifting device and the anti-falling mechanism when falling.

3. The hydraulic arm is opened by using the impact when the scaffold falls down, so that the hydraulic arm drives the stop block to lift the load capacity of the anti-falling mechanism.

4. The stop blocks also enhance the load carrying capacity of the guide rails.

Further, still include safety mechanism, safety mechanism includes that fixed pulley, safe pneumatic cylinder, movable pulley, safety rope and elasticity are detained, be equipped with piston and piston rod in the safe pneumatic cylinder, the movable pulley pin joint is in the tip of piston rod, the fixed pulley is fixed in on the building, on safety rope one end was fixed in the building, the safety rope other end was convoluteed in order and is detained with the last fixed connection elasticity of fixed pulley, and during the use, the construction workman on the lead hand rest is detained to the elasticity.

Has the advantages that: when elevating gear goes wrong, should make construction workman break away from in the scaffold frame gets into the building for the first time, this scheme can drive piston rod pulling safety rope when scaffold frame whereabouts, safety rope will construction workman pull to in the building, wherein in the movable pulley can make the more quick entering building of workman, wherein elasticity is detained and is set up certain clamping-force, when elasticity is detained the power that pulls construction workman and is exceeded certain limit, elasticity is detained and will be break away from, for example, when pulling power and surpassing 1000N, elasticity is detained and will break away from, avoid pulling construction workman's the condition.

Further, the hydraulic pressure inductor is equipped with wireless sending module, the controller is equipped with wireless receiving module. Has the advantages that: more hydraulic pressure sensors can be connected to a wireless receiving module through a wireless network and cannot be influenced by obstacles.

The inflatable air bag is characterized by further comprising an elastic buckle, the elastic buckle is bonded with an inflatable tube, one end of the inflatable tube is communicated with an air bag, the other end of the inflatable tube is communicated with an inflatable air column, the inflatable air column is vertically installed on a building, a sliding groove for installing the inflatable air column is formed in the building, a sliding groove for the inflatable tube to slide up and down is formed in the side face of the sliding groove, a squeezing plate is fixed to the top of the inflatable air column, and the squeezing plate is fixedly connected with the inflatable tube. Has the advantages that: when construction worker inevitable was together fallen along with the scaffold frame, this scheme has set up air bag reinforcing construction worker's protective capacities, can drag the stripper plate whereabouts through the gas tube when the workman falls down, and the stripper plate extrusion is aerifyd the gas column and can be to filling gas in the air bag, and the air bag gas filling speed that descends is faster more fast more, and then plays safety protection's effect.

Further, the safety air bag is arranged in the safety helmet and the safety clothes.

Has the advantages that: the head and the upper half of the body are the two parts which are most easily injured and deadly, and the safety air bags are arranged in the safety helmet and the safety clothes and are used for mainly protecting the head and the upper half of the body of a worker.

Further, a safety relief valve is arranged between the safety hydraulic cylinder and the sliding cavity. Has the advantages that: the normal decline of scaffold can not trigger anti-falling mechanism, and only when the scaffold frame drops unusually, the safety relief valve just can be opened to the hydraulic pressure in the sliding cavity is great, hydraulic drive safety hydraulic cylinder, and safety hydraulic cylinder rethread assembly pulley and safety rope will be under construction workman and pull back the building.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the scaffold lifting device for building according to the present invention.

Fig. 2 is a cross-sectional view at a in fig. 1.

Detailed Description

The following is further detailed by the specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a scaffold 1, a building 2, a stop rack 3, a stop ejector rod 4, a speed swing rod 5, a supporting seat 6, a sliding cavity 7, a return spring 8, a pressurizing channel 9, a hydraulic arm 10, a stop dog 11, a safety hydraulic cylinder 12, a movable pulley 13, a fixed pulley 14, a safety rope 15, an elastic buckle 16, an inflation pipe 17, an extrusion plate 18 and an inflation air column 19.

The embodiment is basically as shown in the attached figure 1: scaffold puts up elevating gear for building, including a plurality of sets of electric block, anti-falling mechanism, the hydraulic pressure inductor that pairs each other, electric block, anti-falling mechanism and hydraulic pressure inductor one-to-one match, still including receiving hydraulic pressure inductor hydraulic signal and controlling electric block's controller, breaking away from the safety mechanism of dangerous situation with the construction workman and for the protection mechanism that the construction workman provided the protection.

Couple is connected on building 2 on the electric block, 1 bottom of scaffold frame is connected to lower couple, prevent weighing down the mechanism including fixing the locking rack 3 on scaffold frame 1, locking mechanism on the fixed building 2 and be fixed in the guide rail on scaffold frame 1, locking mechanism is including fixing supporting seat 6 on building 2, torsional spring and retainer, the retainer passes through the torsional spring and rotates to be connected on supporting seat 6, the retainer has speed pendulum rod 5 and locking ejector pin 4, speed pendulum rod 5 and locking ejector pin 4 integrated into one piece, building 2 has seted up vertical sliding chamber 7 in supporting seat 6 below, the bottom of supporting seat 6 is equipped with sliding piston, the vertical sliding connection of sliding piston is in sliding chamber 7, be equipped with reset spring 8 in sliding chamber 7, sliding chamber 7 intercommunication hydraulic pressure inductor, hydraulic pressure inductor is equipped with wireless sending module, the controller is equipped with wireless receiving module. The controller is used for controlling the electric hoist to put the scaffold 1 down at a set distance, and the controller regulates and controls the electric hoist according to the hydraulic data transmitted by the hydraulic sensors until all the hydraulic sensors display the same hydraulic number.

The sliding cavity 7 is further connected with a pressurizing channel 9, the pressurizing channel 9 is connected with a hydraulic arm 10, the hydraulic arm 10 is connected with a stop dog 11 for stopping the scaffold 1 from dropping, and when the hydraulic arm 10 works, the side face of the stop dog 11 is attached to the side wall of the guide rail.

The safety mechanism comprises a fixed pulley 14, a safety hydraulic cylinder 12, a movable pulley 13, a safety rope 15 and two elastic buckles 16, wherein the safety hydraulic cylinder 12 is communicated with the sliding cavity 7, and a safety pressure release valve is arranged between the safety hydraulic cylinder 12 and the sliding cavity 7.

A piston and a piston rod are arranged in the safety hydraulic cylinder 12, the movable pulley 13 is pivoted at the end part of the piston rod, the fixed pulley 14 is fixed on the building 2, one end of the safety rope 15 is fixed on the building 2, the other end of the safety rope 15 sequentially winds around the movable pulley 13 and the fixed pulley 14 and is finally fixedly connected with the elastic buckle 16, and when the safety hydraulic cylinder is used, the elastic buckle 16 is connected with a construction worker on the scaffold 1.

The protection mechanism comprises an inflation tube 17, the inflation tube 17 is communicated with an elastic inflation gas column 19, the inflation gas column 19 is vertically installed on the building 2, a squeezing plate 18 is arranged at the top of the inflation gas column 19, an inflation hole is formed in the squeezing plate 18 and is communicated with the inflation tube 17, the inflation tube 17 is communicated with an air bag, and the air bag is arranged in a safety helmet and a safety garment.

The implementation process comprises the following steps: as shown in fig. 1, when detecting the load of the electric hoist, controlling the electric hoist to lower the scaffold 1, the scaffold 1 which falls rapidly drives the stop rack 3 fixed on the scaffold 1 to fall together, the stop rack 3 hits the speed swing link 5, the speed swing link 5 drives the stop piece to rotate, when the falling speed of the scaffold exceeds a certain value, the stop ejector rod on the stop piece is too late to exit the range of the automatic rack, therefore, the stop ejector rod 4 can be pushed between the support seat 6 and the stop rack 3, and the scaffold 1 pushes the support seat 6 downwards.

Supporting seat 6 atress gliding, the supporting seat 6 of gliding pushes away sliding piston and moves down, and sliding piston pushes away reset spring 8 when promoting hydraulic oil, and hydraulic pressure risees in the sliding chamber 7, and hydraulic pressure inductor senses hydraulic pressure and changes, if electric block atress is balanced everywhere in theory, then transfers under the condition of scaffold 1 looks isodistance, then the pressure that supporting seat 6 bore everywhere also should be unanimous, and the hydraulic pressure that the hydraulic pressure inductor that each supporting seat 6 corresponds experienced should also be unanimous. When the pressure that the hydraulic pressure inductor responds to is too big, it is also very high to explain the electric block load that corresponds, and controller control electric block reduces the load, and on the contrary when the pressure undersize that the hydraulic pressure inductor responds to, controller control electric block promotes the load. At the same time, the hydraulic pressure in the slide chamber 7 drives the hydraulic arm 10 to push the stopper 11 to block the side wall of the guide rail, because the load of the guide rail is from the horizontal pressing force of the scaffold 1. The stop 11 can assist the guide rail to resist the horizontal extrusion force and can also assist the support mandril to support the falling scaffold 1. Meanwhile, when the pressure in the sliding cavity 7 is too high and exceeds the pressure relief value of the safety relief valve between the safety hydraulic cylinder 12 and the sliding cavity 7, the piston rod of the safety hydraulic cylinder 12 pushes the movable pulley 13 to move left, and the free end of the safety rope 15 which winds the movable pulley 13 and the fixed pulley 14 pulls the elastic buckle 16 to move left. When a worker is on the bungee buckle 16, the worker is pulled to the left. When the worker is not locked, the tension of the safety rope 15 assists the worker to leave the scaffold 1 and enter the building, but when the worker cannot move on the scaffold 1, the worker cannot be pulled when the tension on the elastic buckle 16 is over 1000N, which indicates that the worker is locked and cannot be forcibly pulled, and at this time, the elastic buckle 16 is opened under the action of the tension. When the worst condition is met, a worker is clamped on the scaffold 1 and falls along with the scaffold, as shown in fig. 2, the worker pulls the inflation tube 17 through the other elastic buckle 16, the inflation tube 17 pulls the extrusion plate 18 to fall, the extrusion plate 18 extrudes the inflation air column 19, air is injected into the safety helmet and the safety airbag in the safety clothes through the inflation tube 17, the safety airbag can protect the worker to a certain extent, and the faster the worker falls, the faster the inflation speed of the safety airbag is.

The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art.

It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Scaffold lifting device for building, including controller, a plurality of electric block that mate each other, prevent weighing down mechanism and hydraulic pressure inductor, the couple is connected on the building on the electric block, and lower couple is connected scaffold frame bottom, prevent weighing down the mechanism and include fixing the locking rack on the scaffold, fixing the detent mechanism on the building and being fixed in the guide rail on the scaffold, detent mechanism includes fixing supporting seat, the elastic component that resets and retainer on the building, the retainer rotates through the elastic component that resets and is connected on the supporting seat, and the retainer has speed pendulum rod and locking ejector pin, and speed pendulum rod and locking ejector pin integrated into one piece, its characterized in that, the building has seted up vertical sliding chamber below the supporting seat, the bottom of supporting seat is equipped with sliding piston, sliding piston vertical sliding connection is in the sliding chamber, the controller is used for controlling the electric hoist to lower the scaffold at a set distance, and regulating the electric hoist according to hydraulic data transmitted by the hydraulic sensors until all the hydraulic sensors display the same hydraulic number;

the sliding cavity is further connected with a pressurizing channel, the pressurizing channel is connected with a hydraulic arm, the hydraulic arm is connected with a check block for stopping the scaffold from dropping, and the side face of the check block is attached to the side wall of the guide rail when the hydraulic arm works.

2. The scaffolding elevating device for building according to claim 1, wherein: still include safety mechanism, safety mechanism includes that fixed pulley, safe pneumatic cylinder, movable pulley, safety rope and elasticity are detained, safe pneumatic cylinder intercommunication smooth chamber, be equipped with piston and piston rod in the safe pneumatic cylinder, the movable pulley pin joint is in the tip of piston rod, the fixed pulley is fixed in on the building, on safety rope one end was fixed in the building, the movable pulley was walked around in order to the safety rope other end and the last fixed connection elasticity of fixed pulley is detained, and during the use, the construction workman on the connection foot rest is detained to elasticity.

3. The scaffolding elevating device for building according to claim 2, wherein: the hydraulic pressure inductor is equipped with wireless sending module, the controller is equipped with wireless receiving module.

4. The scaffolding elevating device for building according to claim 3, wherein: the inflatable air bag is characterized by further comprising an elastic buckle, an inflatable tube is bonded on the elastic buckle, one end of the inflatable tube is communicated with an air bag, the other end of the inflatable tube is communicated with an inflatable air column, the inflatable air column is vertically installed on a building, a sliding groove for installing the inflatable air column is formed in the building, a sliding groove for the inflatable tube to slide up and down is formed in the side face of the sliding groove, a squeezing plate is fixed to the top of the inflatable air column, and the squeezing plate is fixedly connected with the inflatable tube.

5. The scaffolding elevating device for building according to claim 4, wherein: the safety air bag is arranged in the safety helmet and the safety clothes.

6. The scaffolding elevating device for building according to claim 5, wherein: a safety relief valve is arranged between the safety hydraulic cylinder and the sliding cavity.