CN113175198A - Control method for all-steel attached lifting scaffold - Google Patents

Control method for all-steel attached lifting scaffold Download PDF

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Publication number
CN113175198A
CN113175198A CN202110483898.2A CN202110483898A CN113175198A CN 113175198 A CN113175198 A CN 113175198A CN 202110483898 A CN202110483898 A CN 202110483898A CN 113175198 A CN113175198 A CN 113175198A
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China
Prior art keywords
height difference
change interval
machine
scaffold
load
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CN202110483898.2A
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Chinese (zh)
Inventor
彭文高
周兴江
杨伟
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Chongqing Pengbuyun Construction Engineering Co ltd
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Chongqing Pengbuyun Construction Engineering Co ltd
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Priority to CN202110483898.2A priority Critical patent/CN113175198A/en
Publication of CN113175198A publication Critical patent/CN113175198A/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

The invention relates to the field of scaffolds, in particular to a control method of an all-steel attached lifting scaffold, which comprises the following steps: A. setting an initial value: setting a load initial value and an allowable load change interval of a single machine position on a control host machine, and setting an allowable height difference change interval between two machine positions; B. the first operation: in the lifting process of the scaffold, recording the actual load value of a single machine position, comparing the actual load value with the initial load value, adjusting without stopping when the load change interval does not exceed the set load change interval, and stopping and adjusting when the load change interval exceeds the set load change interval; and II, operating: in the lifting process of the scaffold, the actual height difference values of two adjacent machine positions are recorded and compared with a height difference change interval, the machine is not stopped and adjusted when the height difference change interval which is not over the set height difference change interval is not exceeded, and the machine is stopped and adjusted when the height difference change interval is over. The problem of need artifically carry out the range estimation tour among the prior art to the lift of scaffold frame has been solved to this scheme, has realized the automatic monitoring of scaffold frame when going up and down.

Description

Control method for all-steel attached lifting scaffold
Technical Field
The invention relates to the field of scaffolds, in particular to a control method of an all-steel attached lifting scaffold.
Background
The all-steel attached lifting scaffold mainly comprises a frame body structure, an attached supporting structure and lifting power control equipment. The frame body structure is a main composition structure of the attached lifting scaffold, and an integral frame body is formed by an inner vertical rod, an outer vertical rod, a scaffold board, a bottom layer support, a triangular support, a horizontal truss and a protective net. The attached supporting structure is directly connected with an engineering structure and used for bearing and transferring the load of the scaffold, is a key structure of the all-steel attached lifting scaffold and consists of a lifting mechanism and a bearing structure thereof, a fixed frame body bearing structure, an anti-overturning device and an anti-falling device. The lifting power control equipment consists of lifting power equipment and a control system thereof.
In the actual construction process, the scaffold surrounds the periphery of a building, and the scaffold is pulled to ascend or descend by the lifting power equipment. Because the appearance girth of building varies from tens meters to hundreds of meters, consequently need a plurality of lift power equipment to stimulate scaffold simultaneously, the quantity of lift power equipment on the one hand is more like this, can stimulate heavier scaffold and go up and down, and on the other hand, a plurality of lift power equipment are located the different positions of different scaffolds to provide the pulling force to the position that scaffold is different, can make scaffold atress relatively even, make the vertical movement that scaffold can be stable.
However, in the construction process, the lifting operation is carried out in open-air construction, and the working condition is severe. Meanwhile, in the lifting process, due to the fact that the building construction is subjected to shape deviation and the influence of external environments such as barriers such as steel pipes, templates and wood and fir, actual loads among machine positions are inconsistent with preset loads, so that the scaffold is stressed unevenly in the lifting process, the scaffold is prone to deflection, when the load deviation or the scaffold deflection exceeds a certain limit, major safety accidents such as falling and tipping can happen to the attached lifting scaffold, and construction safety is seriously threatened.
In addition, different circumstances that the functioning speed is different can appear along with long-term use to different lift power equipment, and some lift power equipment's rising speed is fast, and some lift power equipment's rising speed is slow to make the moving speed of the different positions of scaffold frame different, and then lead to the scaffold frame also can take place the slope, after inclining to certain degree, will take place serious incident.
Aiming at the problems, at present, inspection is carried out manually on site, and certain measures are taken in time after abnormality is found through visual inspection and experience judgment. However, the method requires manual work to continuously patrol on the spot, the working intensity is high, and serious safety accidents can be caused if the patrol is not in place or the experience of patrol personnel is insufficient.
Disclosure of Invention
The invention aims to provide a control method of an all-steel attached lifting scaffold, which aims to solve the problem that the lifting of the scaffold needs manual visual inspection in the prior art and realize the automatic monitoring of the scaffold during lifting.
In order to achieve the purpose, the invention adopts the following technical scheme: the control method of the all-steel attached lifting scaffold is controlled by an automatic control system, wherein the automatic control system comprises a control host, an intelligent extension, a gravity sensor and a displacement sensor;
the gravity sensors are positioned on each machine position hanging point of the scaffold, generate analog signals through gravity sensing, convert the analog signals into digital signals and provide the digital signals for corresponding intelligent extension sets to collect;
the displacement sensor is used for detecting displacement signals of each lifting power device and transmitting the displacement signals to the corresponding intelligent extension set;
the intelligent extension sets are provided with a plurality of intelligent extension sets and are used for collecting gravity signals and displacement signals and transmitting the gravity signals and the displacement signals to the control host; the intelligent extension sets respectively control lifting power equipment of each machine position;
the control host collects the gravity data and the displacement data collected by the intelligent extension and the working state of the intelligent extension, analyzes the data to judge whether the data is abnormal or not, and controls the intelligent extension;
the control method of the automatic control system comprises the following steps:
A. setting an initial value: setting a load initial value and an allowable load change interval of a single machine position on a control host machine, and setting an allowable height difference change interval between two machine positions;
B. the first operation: in the lifting process of the scaffold, recording the actual load value of a single machine position, comparing the actual load value with the initial load value, adjusting without stopping when the load change interval does not exceed the set load change interval, and stopping and adjusting when the load change interval exceeds the set load change interval;
and II, operating: in the lifting process of the scaffold, the actual height difference values of two adjacent machine positions are recorded and compared with a height difference change interval, the machine is not stopped and adjusted when the height difference change interval which is not over the set height difference change interval is not exceeded, and the machine is stopped and adjusted when the height difference change interval is over.
The scheme has the advantages that: the load and the height difference of scaffold machine position have been considered simultaneously in this scheme, carry out automated control through automatic control system, and its automated control monitoring is all more accurate than techniques such as current manual range estimation, need not the manual work and carry out range estimation, inspection tour, greatly reduced workman's intensity of labour, improved the precision of monitoring, very big improvement the security of construction.
This scheme is monitored simultaneously to two aspects of the load of the machine position of scaffold and the difference in height of two machine positions, compares and only monitors one of them aspect, and the monitoring is more comprehensive to be favorable to improving the security of construction.
Meanwhile, the scheme is respectively provided with a load change interval and a height difference change interval in the aspects of load monitoring and height difference monitoring, the machine can be stopped only when the actual load value and the actual height difference value exceed the corresponding load change interval and height difference change interval, and under other conditions, even if the actual load value and the initial load value are different and the heights of the two machine positions are different, the actual load value and the actual height difference value do not exceed the corresponding load change interval and height difference change interval, the actual load value and the initial load value are different and the heights of the two machine positions are different, so that the machine cannot be stopped, the situations that the actual load value and the initial load value are different and the heights of the two machine positions are different in a certain safety range are allowed to exist, and the situation that only the actual load value and the initial load value are different and the heights of the two machine positions are different is avoided, The problem of halt under the condition that the heights of the two machine positions are different is solved, unnecessary halt is reduced, and the normal operation of the whole control system is ensured.
Preferably, as an improvement, in the first operation, when the actual load value of a certain machine position exceeds 15% of the initial load value, the machine position is automatically alarmed and an alarm machine position is displayed; when the initial load value exceeds 30% of the initial load value, the lifting power equipment of the machine position automatically stops. It is reasonable to set the load change interval to 15% and 30%, respectively. The alarm can be used for calling attention of staff, and the staff can check related equipment to remove faults.
Preferably, as an improvement, step B further includes operating three: and recording the actual height difference value of two machine positions with the spacing distance within the N machine positions, comparing the actual height difference value with the height difference change interval, adjusting without stopping when the actual height difference value does not exceed the set height difference change interval, and stopping and adjusting when the actual height difference value exceeds the height difference change interval.
In the second operation, the height difference of adjacent machine positions is monitored, but the following problems can occur: the discrepancy in elevation actual value of two adjacent machine positions can not exceed the discrepancy in elevation change interval, also be exactly the discrepancy in elevation between two adjacent machine positions meet the requirements, but under the condition of N machine positions at interval, the discrepancy in elevation of a plurality of adjacent machine positions can carry out corresponding stack and accumulate to make the difference in elevation of the machine position of head and the tail great, can not monitor the appearance of this kind of condition in the operation two, also do not benefit to the stable lift of whole scaffold like this, have certain potential safety hazard.
And through this scheme, realized calculating at the head and the tail height difference of two machine positions of interval distance at N machine positions, avoided the head and the tail height difference actual value between two machine positions great and surpass the height difference and change the interval, further guaranteed scaffold frame safety lift.
Preferably, as a refinement, N is from 3 to 5. And 3-5 are selected by N, more machine positions and less machine positions are not separated between the two monitored machine positions, so that the lifting safety monitoring of the scaffold is more accurate.
Preferably, as an improvement, in the second operation and the third operation, in the lifting process of the scaffold, the highest machine position which rises is taken as a reference during adjustment, and after other machine positions automatically rise to the height, all lifting power equipment is started and then integrally lifted; in the falling process of the scaffold, the machine position with the lowest falling is used as a reference during adjustment, and after other machine positions automatically fall to the height, all the lifting power equipment is started and then integrally falls. Therefore, according to the scheme, the automatic adjustment of the corresponding machine position is in a state meeting the requirements under the condition that the height difference of the machine position is not in accordance with the requirements, manual adjustment is not needed, and the operation is simple and convenient.
Preferably, as an improvement, the alarm mode is an acousto-optic mode for alarming. The alarm is carried out in a sound and light combined mode, and the alarm effect is good.
Drawings
Fig. 1 is a main block diagram of an automatic control system.
Fig. 2 is a block diagram of a process for operating one.
Fig. 3 is a block diagram of a process of operation two.
Fig. 4 is a block diagram of the procedure for run three.
Fig. 5 shows the high differential diagram of two adjacent machine positions in the second operation.
Fig. 6 is a high differential view of two machine positions, head and tail, with three machine positions in the middle of three runs.
Detailed Description
The following is further detailed by way of specific embodiments:
example 1
Substantially as shown in figures 1 to 4 of the accompanying drawings: the control method of the all-steel attached lifting scaffold is controlled by an automatic control system, wherein the automatic control system comprises a control host, an intelligent extension, a gravity sensor and a displacement sensor; the control system in the embodiment adopts a JSJ-GL type intelligent control system for climbing the rack, and the control host machine is controlled by a PLC control system.
The gravity sensors are positioned on each machine position lifting point of the scaffold, generate analog signals through gravity sensing, convert the analog signals into digital signals and provide the digital signals for corresponding intelligent extension sets to collect.
And the displacement sensor is used for detecting displacement signals of each lifting power device and transmitting the displacement signals to the corresponding intelligent extension set. The lifting power equipment in the embodiment is an electric hoist, the principle of detecting the lifting power equipment by the displacement sensor can be used for detecting the direct moving distance of a hook in the lifting power equipment and also detecting the rotating turns of transmission parts such as a gear in the lifting power equipment, and the detected rotating turns are converted into the lifting distance of the lifting power equipment.
The intelligent extension sets are provided with a plurality of intelligent extension sets and are used for collecting gravity signals and displacement signals and transmitting the gravity signals and the displacement signals to the control host; the intelligent extension sets respectively control lifting power equipment of each machine position, and specifically control positive and negative rotation and the number of rotating turns of a motor in the electric hoist; the intelligent extension in the embodiment is a plurality of single-chip microcomputers.
The control host collects the gravity data and displacement data collected by the intelligent extension and the working state of the intelligent extension, performs comprehensive analysis to judge various faults and controls the lifting instruction of the intelligent extension.
In this embodiment, the whole automatic control system is a measurement system composed of a control host, a plurality of intelligent extensions with a single-chip microcomputer as a core, and a sensor. The control host and the intelligent extension are connected together through the communication bus, and load and height difference of each sub-control in the system are detected, alarmed, cleared and controlled in real time, so that the rapidness, safety and accuracy of scaffold construction are effectively guaranteed. The main data sampled by the system is the load data and height data of the machine position, the action switching of various states is realized through a single-chip microcomputer, and the main object of control is the three-phase alternating current motor of the electric hoist.
The control method of the automatic control system comprises the following steps:
A. setting an initial value: setting a load initial value w and an allowable load change interval of a single machine position on a control host, wherein the load change intervals are two and are respectively 15% and 30%, and setting a height difference change interval h between the two machine positions;
B. the first operation: referring to fig. 2, in the lifting process of the scaffold, the actual load value Wa of a single machine position is recorded and compared with the initial load value w, the machine is adjusted without stopping when the load change interval does not exceed the set load change interval, and the machine is stopped and adjusted when the load change interval exceeds the set load change interval; specifically, when the actual load value of a certain machine position a exceeds 15% of the initial load value, the alarm machine position is automatically alarmed and displayed in an acousto-optic mode. When the initial load value exceeds 30% of the initial load value, the lifting power equipment of the machine position automatically stops. When the initial load value does not exceed 30% of the initial load value, the load of the next station is automatically monitored according to the procedure of fig. 2.
And II, operating: as shown in fig. 3 and 5, in the lifting process of the scaffold, the heights Ha, Hb, and Hc of two adjacent machine positions are recorded, and the actual height difference values | Ha-Hb | and | Ha-Hc | of the two adjacent machine positions are calculated, so that the actual height difference value is compared with the height difference change interval h, the machine is not stopped and adjusted if the actual height difference value does not exceed the set height difference change interval, and the machine is stopped and adjusted if the actual height difference value exceeds the height difference change interval. According to the procedure shown in fig. 3, the machine positions are automatically counted, so that the height difference between two adjacent machine positions of the next machine position is sequentially monitored.
And operation III: referring to fig. 4, the height values Ha and Hb of two machine positions with the spacing distance within N machine positions are recorded, the difference between the machine positions a and b is N machine positions, N is 3-5, and N is 3 in the embodiment. And calculating the height difference | Ha-Hb | of the head and the tail of the machine positions a and b, comparing the height difference | Ha-Hb | with a height difference change interval h, adjusting without stopping when the height difference change interval h does not exceed the set height difference, and stopping and adjusting when the height difference change interval h exceeds the height difference change interval h. According to the procedure shown in fig. 4, the stations are automatically counted, so that the height difference of two stations at an interval N on the scaffold is sequentially monitored. From this, through operation three, combine fig. 6 to show, even if two adjacent machine positions meet the requirements between the head and the tail machine position, if the head and the tail machine position do not meet the requirements, this embodiment also can monitor to it is great to avoid the difference in height of two machine positions of head and tail, has guaranteed the operation safety of scaffold frame.
Example 2
In the second operation and the third operation in the embodiment, if abnormality is detected, the machine position can be automatically adjusted. The specific adjustment mode is as follows: if the scaffold rises, the whole machine is stopped, the machine which does not meet the requirement is adjusted, the highest machine which rises is used as a reference during adjustment, the motor of the machine which does not meet the requirement is controlled to rotate, and after the machine which does not meet the requirement automatically rises to the height, all lifting power equipment is restarted and then the whole scaffold is lifted. In the falling process of the scaffold, if abnormity occurs, the whole machine position is stopped, then the machine position which does not meet the requirement is adjusted, the lowest machine position which falls below the machine position is used as a reference during adjustment, the motor of the machine position which does not meet the requirement is controlled to rotate, and after the machine position which does not meet the requirement automatically falls to the height, all lifting power equipment is started and then continues to fall on the whole scaffold.
The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations 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 (6)

1. The control method of the all-steel attached lifting scaffold is characterized by comprising the following steps of: the control is carried out through an automatic control system, and the automatic control system comprises a control host, an intelligent extension, a gravity sensor and a displacement sensor;
the gravity sensors are positioned on each machine position hanging point of the scaffold, generate analog signals through gravity sensing, convert the analog signals into digital signals and provide the digital signals for corresponding intelligent extension sets to collect;
the displacement sensor is used for detecting displacement signals of each lifting power device and transmitting the displacement signals to the corresponding intelligent extension set;
the intelligent extension sets are provided with a plurality of intelligent extension sets and are used for collecting gravity signals and displacement signals and transmitting the gravity signals and the displacement signals to the control host; the intelligent extension sets respectively control lifting power equipment of each machine position;
the control host collects the gravity data and the displacement data collected by the intelligent extension and the working state of the intelligent extension, analyzes the data to judge whether the data is abnormal or not, and controls the intelligent extension;
the control method of the automatic control system comprises the following steps:
A. setting an initial value: setting a load initial value and an allowable load change interval of a single machine position on a control host machine, and setting an allowable height difference change interval between two machine positions;
B. the first operation: in the lifting process of the scaffold, recording the actual load value of a single machine position, comparing the actual load value with the initial load value, adjusting without stopping when the load change interval does not exceed the set load change interval, and stopping and adjusting when the load change interval exceeds the set load change interval;
and II, operating: in the lifting process of the scaffold, the actual height difference values of two adjacent machine positions are recorded and compared with a height difference change interval, the machine is not stopped and adjusted when the height difference change interval which is not over the set height difference change interval is not exceeded, and the machine is stopped and adjusted when the height difference change interval is over.
2. The control method of the all-steel attached lifting scaffold according to claim 1, wherein: in the first operation, when the actual load value of a certain machine position exceeds 15% of the initial load value, automatically alarming and displaying an alarm machine position; when the initial load value exceeds 30% of the initial load value, the lifting power equipment of the machine position automatically stops.
3. The control method of the all-steel attached lifting scaffold according to claim 2, wherein: in the step B, the method also comprises the following operation III: and recording the actual height difference values of two machine positions with the spacing distance within the N machine positions, comparing the actual height difference values with the actual height difference values, adjusting without stopping when the actual height difference values do not exceed the set height difference change interval, and stopping and adjusting when the actual height difference values exceed the set height difference change interval.
4. The control method of the all-steel attached lifting scaffold according to claim 3, wherein: and N is 3-5.
5. The control method of the all-steel attached lifting scaffold according to claim 3, wherein: in the second operation and the third operation, in the lifting process of the scaffold, the highest machine position which rises is taken as a reference during adjustment, and after other machine positions automatically rise to the height, all lifting power equipment is started and then integrally lifted; in the falling process of the scaffold, the machine position with the lowest falling is used as a reference during adjustment, and after other machine positions automatically fall to the height, all the lifting power equipment is started and then integrally falls.
6. The control method of the all-steel attached lifting scaffold according to claim 2, wherein: the alarm mode is an acousto-optic mode for alarming.
CN202110483898.2A 2021-04-30 2021-04-30 Control method for all-steel attached lifting scaffold Pending CN113175198A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080236944A1 (en) * 2004-07-12 2008-10-02 Bruno Patron Platform Support Device For Lifting Loads Or Persons The Height Of A Structure
CN203149386U (en) * 2013-04-02 2013-08-21 蚌埠传感器***工程有限公司 Intelligent control system for attached-type lifting scaffold
CN104110124A (en) * 2014-07-25 2014-10-22 广东信海建筑有限公司 Inserted lift scaffold with video security monitoring system
CN205000626U (en) * 2015-09-18 2016-01-27 南阳市领驭机械有限公司 Restriction of inserted lift scaffold load and high heterochronous automatic control system
CN108529514A (en) * 2018-03-12 2018-09-14 广东精铟海洋工程股份有限公司 The continuous jacking system of spiral bolt-type and its elevating method for offshore platform
CN111268577A (en) * 2020-01-20 2020-06-12 乾日安全科技(北京)有限公司 Climbing frame control system and method
US20210040757A1 (en) * 2018-02-08 2021-02-11 Skyline Robotics Ltd. Device and method for use in cleaning a facade

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080236944A1 (en) * 2004-07-12 2008-10-02 Bruno Patron Platform Support Device For Lifting Loads Or Persons The Height Of A Structure
CN203149386U (en) * 2013-04-02 2013-08-21 蚌埠传感器***工程有限公司 Intelligent control system for attached-type lifting scaffold
CN104110124A (en) * 2014-07-25 2014-10-22 广东信海建筑有限公司 Inserted lift scaffold with video security monitoring system
CN205000626U (en) * 2015-09-18 2016-01-27 南阳市领驭机械有限公司 Restriction of inserted lift scaffold load and high heterochronous automatic control system
US20210040757A1 (en) * 2018-02-08 2021-02-11 Skyline Robotics Ltd. Device and method for use in cleaning a facade
CN108529514A (en) * 2018-03-12 2018-09-14 广东精铟海洋工程股份有限公司 The continuous jacking system of spiral bolt-type and its elevating method for offshore platform
CN111268577A (en) * 2020-01-20 2020-06-12 乾日安全科技(北京)有限公司 Climbing frame control system and method

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Application publication date: 20210727