CN111675099A - Hoisting method capable of adjusting arbitrary hoisting angle of prefabricated oblique component - Google Patents
Hoisting method capable of adjusting arbitrary hoisting angle of prefabricated oblique component Download PDFInfo
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- CN111675099A CN111675099A CN202010460684.9A CN202010460684A CN111675099A CN 111675099 A CN111675099 A CN 111675099A CN 202010460684 A CN202010460684 A CN 202010460684A CN 111675099 A CN111675099 A CN 111675099A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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Abstract
The invention relates to a hoisting method for any hoisting angle of an adjustable prefabricated inclined component, which comprises the following steps: determining the lengths and the types of the sling and the chain block; step two: selecting different hoisting forms, assembling slings and chain blocks, and connecting a crane hook and a heavy object hoisting point; step three: the length of the sling is adjusted by manually adjusting the length of the chain block, and the lifting angle of the inclined component is adjusted; step four: when the inclined member is lifted above the installation position, slowly descending the member to avoid collision with an adjacent member, enabling the bottom of the inclined member to contact the installation position firstly, and then slowly loosening the lifting hook to enable the upper part of the inclined member to contact the acting point slowly; step five: after the inclined component is installed and adjusted in position, loosening the lifting hook, dismounting lifting point slings at two ends of the heavy object and a chain block lifting hook, and repeating the hoisting of the next component; the adjustable hoisting angle hoisting method is applicable to the adjustable hoisting angle hoisting method of the prefabricated inclined component with different inclination angles and different component lengths.
Description
Technical Field
The invention relates to the field of building construction, in particular to a hoisting method capable of adjusting any hoisting angle of a prefabricated oblique component.
Background
As a new development trend of the building industry, prefabricated building structures are more and more commonly applied, and meanwhile, the hoisting and mounting technology of prefabricated parts is gradually improved.
When the prefabricated inclined component is hoisted, such as a stair step plate, a parking building slope plate and other inclined components, the actual length of the inclined component is greater than the horizontal length when the inclined component is installed in place, and if the inclined component is hoisted in a horizontal placement mode, the inclined component cannot be smoothly placed in place at one time due to the limitation of the surrounding condition and the space length when the inclined component is installed in place; therefore, in order to ensure that the member can be smoothly hoisted in place at one time, the inclined member must be ensured to keep a certain inclination angle when being hoisted, and the inclination angle is slightly larger than the inclination angle when the member is designed and installed in place; when the inclined member is hoisted and falls down, the bottom of the member is firstly in place and firstly contacts with an acting point, then the crane hook is slowly descended, the lifting rope is loosened, and the upper end of the member is also slowly contacted with the acting point, so that the whole inclined member can be hoisted and placed in place smoothly at one time.
Therefore, the control of the inclination angle of the diagonal member during hoisting is very critical, two slings with different lengths are generally selected in the traditional hoisting method to meet the inclination requirement of the diagonal member during hoisting, but the inclination angle and the member length during design in place are not completely the same for the diagonal members with different layer heights, different positions and different use function requirements. According to the requirement of hoisting specifications, the horizontal included angle between the sling and a hoisted member is controlled to be generally 45-60 degrees, so that a simple, convenient and adjustable hoisting mode for adjusting the length of the sling and the included angle between the sling and the member is designed, the stress of the sling is more scientific and reasonable, and the hoisting process is safer and more reliable, which is particularly important.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a hoisting method capable of adjusting any hoisting angle of a prefabricated oblique member, and solves the problems of the hoisting method and the safety of the prefabricated assembly type building oblique member.
In order to solve the technical problem, the invention is realized as follows:
the hoisting method for the adjustable arbitrary hoisting angle of the prefabricated diagonal member is characterized by comprising the following steps of: it includes hoist cable or suspender and chain block of two different length, and the concrete step is as follows:
the method comprises the following steps: before the inclined component is lifted, calculating the design length and the bearing axial tension of the slings at the two sides of the lifting hook according to the weight of the component and the design included angle between the slings and the component, thereby determining the lengths and the model selection of the slings and the chain block;
step two: after the prefabricated part enters the field, selecting different hoisting forms, assembling slings and chain blocks according to the size characteristics of the prefabricated part and the requirements of hoisting inclination angles, and connecting a crane hook and a heavy object hoisting point;
hoisting form 1: when the inclined angle of the hung inclined member is smaller when the hung inclined member is installed in place, or the length size of the member is common, if a ladder section plate is prefabricated, two hanging belts with different lengths and a chain block are adopted, and the angle of the member during hoisting is adjusted by adjusting the length of the chain block on one side;
hoisting type 2: when the inclined angle of the hung inclined component is larger when the inclined component is installed in place, or the length size of the component is larger, or the designed lifting point on a lifted object is far away, such as a prefabricated ramp plate, the lengths and the adjustment ranges of the slings on the two sides are increased by adopting two hanging strips with different lengths and two chain blocks, and the angle of the component during lifting is adjusted by adjusting the lengths of the chain blocks on the two sides, so that the lifting angle required by design calculation and specification is realized;
hoisting form 3: when the hung diagonal member is heavy in weight or large in geometric size, four suspension ropes and four chain blocks can be adopted according to actual conditions and hoisting calculation results, the tension of each suspension rope is dispersed by increasing the number of the suspension ropes and the number of the chain blocks, the angles in all directions during hoisting of the member are adjusted by adjusting the length of the chain blocks connected with the suspension ropes, and transverse hoisting beams or special hoisting tools can be designed and added to meet the hoisting requirements of large-size members;
step three: according to the calculated lengths of the slings at the two sides of the lifting hook, the lengths of the slings are adjusted by manually adjusting the lengths of the chain blocks, so that the lifting angle of the inclined component is adjusted; the designed hoisting angle of the member is slightly larger than the angle or gradient when the member is hoisted in place, so that the bottom of the oblique member is firstly contacted with an acting point;
step four: when the inclined member is lifted above the installation position, slowly descending the member to avoid collision with an adjacent member, enabling the bottom of the inclined member to contact the installation position firstly, and then slowly loosening the lifting hook to enable the upper part of the inclined member to contact the acting point slowly;
step five: after the inclined component is installed and adjusted in position, the lifting hook is loosened, the lifting point sling and the chain block lifting hook at the two ends of the heavy object are dismounted, and the next component is repeatedly lifted.
The invention has the beneficial effects that: 1. the safety and the reliability are high. The model selection of the sling and the chain block is determined through safety calculation, and the design and the model selection are unified to obtain a larger tension value, so that the safety factor is ensured to be not less than 6.
2. The application range is wide. The device can be suitable for hoisting any form of inclined member, and can be used for hoisting the member in place at any inclination angle and in different length sizes.
3. The operation is flexible. When the inclined component is lifted, the length of the sling at one side or two sides can be adjusted by the manual chain block, so that the random lifting angle of the component can be adjusted.
4. The installation is simple and flexible. The sling, the chain block and the heavy object lifting lug are connected by adopting a device with a hook, so that the device is simple, convenient, rapid and reliable.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
fig. 1 is a schematic view of a hoist form 1.
Fig. 2 is a schematic view of the hoist form 2.
Fig. 3 is a schematic view of a hoist form 3.
Detailed Description
A hoisting method for any hoisting angle of an adjustable prefabricated diagonal member comprises two slings or hanging belts 2 with different lengths and a chain block 1, and comprises the following specific steps:
the method comprises the following steps: before the inclined component 3 is lifted, calculating the design length and the bearing axial tension of the slings at two sides of the lifting hook 4 according to the weight of the component and the design included angle between the slings and the component, thereby determining the lengths and the types of the slings and the chain block;
step two: after the prefabricated part enters the field, selecting different hoisting forms, assembling slings and chain blocks according to the size characteristics of the prefabricated part and the requirements of hoisting inclination angles, and connecting a crane hook and a heavy object hoisting point;
as shown in fig. 1: hoisting form 1: when the inclined angle of the hung inclined member is smaller when the hung inclined member is installed in place, or the length size of the member is common, if a ladder section plate is prefabricated, two hanging belts with different lengths and a chain block are adopted, and the angle of the member during hoisting is adjusted by adjusting the length of the chain block on one side;
as shown in fig. 2: hoisting type 2: when the inclined angle of the hung inclined component is larger when the inclined component is installed in place, or the length size of the component is larger, or the designed lifting point on a lifted object is far away, such as a prefabricated ramp plate, the lengths and the adjustment ranges of the slings on the two sides are increased by adopting two hanging strips with different lengths and two chain blocks, and the angle of the component during lifting is adjusted by adjusting the lengths of the chain blocks on the two sides, so that the lifting angle required by design calculation and specification is realized;
as shown in fig. 3: hoisting form 3: when the hung diagonal member is heavy in weight or large in geometric size, four suspension ropes and four chain blocks can be adopted according to actual conditions and hoisting calculation results, the tension of each suspension rope is dispersed by increasing the number of the suspension ropes and the number of the chain blocks, the angles in all directions during hoisting of the member are adjusted by adjusting the length of the chain blocks connected with the suspension ropes, and transverse hoisting beams or special hoisting tools can be designed and added to meet the hoisting requirements of large-size members;
step three: according to the calculated lengths of the slings at the two sides of the lifting hook, the lengths of the slings are adjusted by manually adjusting the lengths of the chain blocks, so that the lifting angle of the inclined component is adjusted; the designed hoisting angle of the member is slightly larger than the angle or gradient when the member is hoisted in place, so that the bottom of the oblique member is firstly contacted with an acting point;
step four: when the inclined member is lifted above the installation position, slowly descending the member to avoid collision with an adjacent member, enabling the bottom of the inclined member to contact the installation position firstly, and then slowly loosening the lifting hook to enable the upper part of the inclined member to contact the acting point slowly;
step five: after the inclined component is installed and adjusted in position, the lifting hook is loosened, the lifting point sling and the chain block lifting hook at the two ends of the heavy object are dismounted, and the next component is repeatedly lifted.
Claims (1)
1. The hoisting method for the adjustable arbitrary hoisting angle of the prefabricated diagonal member is characterized by comprising the following steps of: it includes hoist cable or suspender and chain block of two different length, and the concrete step is as follows:
the method comprises the following steps: before the inclined component is lifted, calculating the design length and the bearing axial tension of the slings at the two sides of the lifting hook according to the weight of the component and the design included angle between the slings and the component, thereby determining the lengths and the model selection of the slings and the chain block;
step two: after the prefabricated part enters the field, selecting different hoisting forms, assembling slings and chain blocks according to the size characteristics of the prefabricated part and the requirements of hoisting inclination angles, and connecting a crane hook and a heavy object hoisting point;
hoisting form 1: when the inclined angle of the hung inclined member is smaller when the hung inclined member is installed in place, or the length size of the member is common, if a ladder section plate is prefabricated, two hanging belts with different lengths and a chain block are adopted, and the angle of the member during hoisting is adjusted by adjusting the length of the chain block on one side;
hoisting type 2: when the inclined angle of the hung inclined component is larger when the inclined component is installed in place, or the length size of the component is larger, or the designed lifting point on a lifted object is far away, such as a prefabricated ramp plate, the lengths and the adjustment ranges of the slings on the two sides are increased by adopting two hanging strips with different lengths and two chain blocks, and the angle of the component during lifting is adjusted by adjusting the lengths of the chain blocks on the two sides, so that the lifting angle required by design calculation and specification is realized;
hoisting form 3: when the hung diagonal member is heavy in weight or large in geometric size, four suspension ropes and four chain blocks can be adopted according to actual conditions and hoisting calculation results, the tension of each suspension rope is dispersed by increasing the number of the suspension ropes and the number of the chain blocks, the angles in all directions during hoisting of the member are adjusted by adjusting the length of the chain blocks connected with the suspension ropes, and transverse hoisting beams or special hoisting tools can be designed and added to meet the hoisting requirements of large-size members;
step three: according to the calculated lengths of the slings at the two sides of the lifting hook, the lengths of the slings are adjusted by manually adjusting the lengths of the chain blocks, so that the lifting angle of the inclined component is adjusted; the designed hoisting angle of the member is slightly larger than the angle or gradient when the member is hoisted in place, so that the bottom of the oblique member is firstly contacted with an acting point;
step four: when the inclined member is lifted above the installation position, slowly descending the member to avoid collision with an adjacent member, enabling the bottom of the inclined member to contact the installation position firstly, and then slowly loosening the lifting hook to enable the upper part of the inclined member to contact the acting point slowly;
step five: after the inclined component is installed and adjusted in position, the lifting hook is loosened, the lifting point sling and the chain block lifting hook at the two ends of the heavy object are dismounted, and the next component is repeatedly lifted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460684.9A CN111675099A (en) | 2020-05-27 | 2020-05-27 | Hoisting method capable of adjusting arbitrary hoisting angle of prefabricated oblique component |
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| CN202010460684.9A CN111675099A (en) | 2020-05-27 | 2020-05-27 | Hoisting method capable of adjusting arbitrary hoisting angle of prefabricated oblique component |
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| CN111675099A true CN111675099A (en) | 2020-09-18 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5729339A (en) * | 1993-09-02 | 1998-03-17 | Korea Atomic Energy Research Institute | Swing angle measuring apparatus for swing free operation of crane |
| CN201647800U (en) * | 2010-02-11 | 2010-11-24 | 中交一公局第三工程有限公司 | Adjustable unequal-length wire rope sling |
| CN105417372A (en) * | 2015-11-05 | 2016-03-23 | 云南省送变电工程公司 | Method for obliquely inserting and mounting high-voltage bushing once through intelligent protractor |
| CN109761143A (en) * | 2019-03-12 | 2019-05-17 | 安徽晋煤中能化工股份有限公司 | Fuselage inner cavity irregular element balances hanging apparatus |
-
2020
- 2020-05-27 CN CN202010460684.9A patent/CN111675099A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5729339A (en) * | 1993-09-02 | 1998-03-17 | Korea Atomic Energy Research Institute | Swing angle measuring apparatus for swing free operation of crane |
| CN201647800U (en) * | 2010-02-11 | 2010-11-24 | 中交一公局第三工程有限公司 | Adjustable unequal-length wire rope sling |
| CN105417372A (en) * | 2015-11-05 | 2016-03-23 | 云南省送变电工程公司 | Method for obliquely inserting and mounting high-voltage bushing once through intelligent protractor |
| CN109761143A (en) * | 2019-03-12 | 2019-05-17 | 安徽晋煤中能化工股份有限公司 | Fuselage inner cavity irregular element balances hanging apparatus |
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Application publication date: 20200918 |