CN102092648B - Tower crane and balance detection system thereof - Google Patents
Tower crane and balance detection system thereof Download PDFInfo
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- CN102092648B CN102092648B CN 201010577756 CN201010577756A CN102092648B CN 102092648 B CN102092648 B CN 102092648B CN 201010577756 CN201010577756 CN 201010577756 CN 201010577756 A CN201010577756 A CN 201010577756A CN 102092648 B CN102092648 B CN 102092648B
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Abstract
The invention provides a tower crane and a balance detection system thereof. In the balance detection system of the tower crane according to the invention, the tower crane comprises a lower support and a stock, the balance detection system of the tower crane comprises a force sensor, and the lower support and the stock are connected through the force sensor. The tower crane according to the invention comprises the balance detection system of the tower crane. Because the stress condition of the stock is detected by the force sensor, whether a rotating part on the tower crane under a dismounting working condition is in a balance state is judged, thereby reducing significant personal injury accidents under the dismounting working condition, and improving the use safety performance of the tower crane.
Description
Technical field
The present invention relates to technical field of engineering machinery, more specifically, relate to a kind of tower crane and balance master system thereof.
Background technology
Tower crane is one of main construction machinery and equipment of modern industry and civil construction, and the lifting altitude of tower crane and the performance advantage of work range are widely used it in high-building construction.
Because the tower crane aloft work, it is more that it brings out unsafe factor.In the installation of high-rise tower crane, use, the demolishing process, high, careless slightly to Safety Technical Management and operator's level requirement, very easily cause serious accident.From China's accident case of tower crane in recent years, accident mainly occurs in the assembling and dissembling process of tower crane.With regard to the technical merit of present tower crane, it is very high that the disassemble and assemble work of tower crane requires operator's technical merit, and a slight carelessness just very easily causes great human casualty accident.So relevant intendance with the each place of country has put into effect various safety procedure, each production firm and user have also formulated technology and management expectancy separately, but are difficult to avoid owing to the generation of installing and removing the particularly serious accident of tower crane that reason causes.
As shown in Figure 1, tower crane generally is made up of last rotating part and body of the tower two parts, and these two parts were used the revolution support and connection together.Revolution is supported similar with the principle of work of surface bearing, and revolution is supported top and is connected with upper bracket, and upper bracket is connected with arm 50 ', equilibrium arm 60 ' etc.; Revolution is supported the bottom and is connected with undersetting 30 ', and undersetting 30 ' is connected respectively with stock 20 ' with standard knot 10 '.Several standard knots 10 ' are formed body of the tower, and stock 20 ' is contained on the standard knot 10 ' through two groups of roller housings, and jacking cylinder also is installed on the stock 20 '.When tower crane was done gyroscopic movement, revolution was supported with top and is rotated around the body of the tower center, so be called rotating part, revolution is supported with lower part such as standard knot 10 ' then fixed with stock 20 '.
The tower crane process of increasing is such; At first, the suspension hook 40 ' that is contained on the arm 50 ' hangs on a suitable weight, moves the level attitude of suspension hook 40 ' on arm 50 '; Make arm 50 ' and equilibrium arm 60 ' both sides with respect to the moment of flexure of body of the tower in a basic balance after; Unclamp undersetting 30 ' and standard knot 10 ' bonded assembly tie bolt, and an end of the jacking cylinder that is installed on the stock 20 ' is supported on the marking time of standard knot 10 ', when oil cylinder extends; Under the effect of two groups of roller guiding, stock 20 ' will make the last rotating part of tower crane break away from standard knot 10 ' top through the connection supporting leg on top and rise along standard knot 10 '.After jacking is accomplished; Undersetting 30 ' will can be vacated the room of a standard knot with standard knot 10 ' top, and at this moment, last rotating part will all be supported by stock 20 '; If between standard knot 10 ' top and undersetting 30 ', refill a last joint standard knot 10 ' this moment; The top of new clothes standard knot 10 ' is connected with undersetting 30 ', and the bottom of new standard joint 10 ' links to each other with original standard knot 10 ', and tower crane has just been accomplished the process of increasing like this.
Tower crane will reduce when height, above process get final product on the contrary.
The several times of stock 20 ' are also because the function difference also has different appellations; Under the dismounting operating mode, facing arm the stock 20 ' here has a bigger opening, so that standard knot 10 ' turnover; So be called introduction face, the top of introducing face is connected with undersetting 30 ' through two supporting legs; And at equilibrium arm 60 ' over there; Under the dismounting operating mode, play rotating part on the tower crane through the oil cylinder jacking, the face that mainly plays the carrying effect is called jacking face; Jacking face also is to be connected with undersetting through two supporting legs, and jacking cylinder also is installed on the jacking face.The jacking face of stock 20 ' is shaped through the rod member of two sides is fixing with introduction face.
In the tower crane disassembly process, an important link is the trim link, and exactly before the tie bolt of four supporting legs that unclamp undersetting 30 ' and standard knot 10 ', it is flat that rotating part is distributed.The trim process is following: suspension hook 40 ' certain weight of slinging at first, move suspension hook 40 ' then in the position that arm 50 ' is gone up level, and the center of gravity of rotating part on the tower crane is dropped on two supporting legs of jacking face of stock 20 '.If not trim just grave accident may occur; Because after rotating part on the tower crane is risen through the oil cylinder on the stock 20 ', stock 20 ' has carried whole weight and the unbalanced moments of rotating part on the tower crane, and when generally designing stock 20 '; Just consider to carry the weight of rotating part on the tower crane in principle; Think under the jacking state it is balance, because under state of equilibrium, the weight of last rotating part is two supporting legs through undersetting jacking faces of being delivered to stock; Be passed to the jacking cylinder of the jacking face of being installed in one side through the part-structure of stock 20 ' jacking face; Be delivered on the marking time of standard knot 10 ' by oil cylinder again, carry top weight by body of the tower then, and the unbalanced moment that this moment, stock bore is less.So, when design stock 20 ', be not consider basically to the load-carrying capacity of unbalanced moment, that is to say that stock 20 ' is very limited to the load-carrying capacity of the unbalanced moment of rotating part on the tower crane.Under the situation of not trim, just might make unbalanced moment excessive, will make stock 20 ' structural failure and grave accident occurs; Secondly; This moment, the unbalanced moment on top was through being installed on the side that two groups of rollers on the stock 20 ' are delivered to standard knot 10 ', and the normal working of this and standard knot 10 ' is completely different, when the unbalanced moment on top excessive; Even stock 20 ' structure is not destroyed, also can makes the structural failure of standard knot 10 ' and cause grave accident.
As stated; Under the dismounting operating mode of tower crane; Can whether the center of gravity that how to guarantee rotating part drop on the most important condition that implement safe dismounting on the jacking face of stock exactly to tower crane; The explanation of installing and using of various tower cranes all requires before dismounting, must accomplish the rotating part balance-dividing, and various safety standards national and that each place government goes out have all been made emphasical to this.With regard to present tower crane, technologically speaking, be that the center of gravity of the last rotating part of tower crane is dropped on the jacking face of stock through the method that moves suspension hook, but on how judging rotating part whether to reach balance be a difficult problem.Even because trim does not have tangible state can represent whether tower crane top has reached balance yet.In most cases all be to judge whether balance by rule of thumb; Such as observing the bolted connection situation; Support situation of stock 20 ' each roller and standard knot 10 ' or the like; This just requires the operator must possess cooresponding practical experience and thinking clearly, yet this getting sth into one's head tends to occur the result of mistake, and this also is the major cause that hoisting crane often has an accident under the dismounting operating mode.
Summary of the invention
Thereby whether the present invention aims to provide a kind of last rotating part that can detect the tower crane under the dismounting operating mode reaches tower crane and the balance master system thereof that balance improves the usage safety performance of tower crane.
According to an aspect of the present invention, a kind of balance master system of tower crane is provided, tower crane comprises undersetting and stock, and the balance master system of tower crane comprises force transducer, and undersetting is connected through force transducer with stock.
Further, undersetting is provided with the undersetting supporting leg, and stock is provided with the stock supporting leg, and force transducer connects undersetting supporting leg and stock supporting leg.
Further, force transducer is the pin type force transducer.
Further, have the stock connecting bore on the stock supporting leg, have the bearing connecting bore coaxial with the stock connecting bore on the undersetting supporting leg, the pin type sensor passes stock connecting bore and bearing connecting bore.
Further, force transducer connects the stock supporting leg and corresponding undersetting supporting leg of the introduction face side that is positioned at stock.
Further, between two stock supporting legs of the introduction face side of stock and corresponding undersetting supporting leg, all be connected through force transducer.
Further, all be connected between each undersetting supporting leg and corresponding each stock supporting leg through force transducer.
Further, the balance master system of tower crane also comprises measurement display unit, and communicating by letter with force transducer is connected, and shows the testing result of force transducer.
Further, measurement display unit comprises: signal processing unit, and the measurement signal that the reception force transducer sends also converts thereof into take off data; Data handing and display unit, communicating by letter with signal processing unit is connected, and receives and take off data that the processing signals processing unit sends, and shows take off data.
According to another aspect of the present invention, a kind of tower crane is provided, tower crane comprises the balance master system of aforesaid tower crane.
Adopt tower crane of the present invention and balance master system thereof, balance master system comprises force transducer, and the undersetting of tower crane is connected through force transducer with stock.Detect the force-bearing situation of stock through force transducer; Judge under the dismounting operating mode of tower crane whether rotating part reaches state of equilibrium on it; Reduce the generation of the great human casualty accident under the dismounting operating mode, improved the usage safety performance of tower crane.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the tower crane of prior art;
Fig. 2 is according to the stock of tower crane of the present invention and the structural representation of undersetting;
Fig. 3 is the installation site scheme drawing according to the force transducer of the balance master system of tower crane of the present invention;
Fig. 4 is the partial enlarged drawing of installation site scheme drawing of the force transducer of Fig. 3; And
Fig. 5 is the scheme drawing according to the measurement display unit of the balance master system of tower crane of the present invention.
The specific embodiment
Below with reference to accompanying drawing and combine embodiment, specify the present invention.
The invention provides a kind of balance master system of tower crane.
To shown in Figure 5, according to the balance master system of tower crane of the present invention, tower crane comprises undersetting 30 and stock 20 like Fig. 2, and balance master system comprises force transducer 80, and undersetting 30 is connected through force transducer 80 with stock 20.
According to one embodiment of present invention, to shown in Figure 4, undersetting 30 is provided with undersetting supporting leg 31 like Fig. 2, and stock 20 is provided with stock supporting leg 21, and force transducer 80 connects undersetting supporting leg 31 and stock supporting leg 21.
Under the situation of rotating part on the 70 support tower cranes of the jacking cylinder on the jacking face of stock 20; The center-of-gravity position of last rotating part is different; Two supporting legs of the jacking face of stock 20 are diverse with the suffered power that is handed down by undersetting 31 of two supporting legs of the face of introduction; When the center-of-gravity position of last rotating part promptly was on the arm of tower crane beyond introduction face, the stock supporting leg 21 of introducing face bore pressure, and the stock supporting leg 21 of jacking face bears pulling force; When the center-of-gravity position of last rotating part was between introduction face and jacking face, the stock supporting leg 21 of introduction face and jacking face all bore pressure; When the top center of gravity dropped on the equilibrium arm that jacking face promptly is in tower crane later on, the stock supporting leg 21 of stock jacking face bore pressure, and the stock supporting leg 21 of the face of introduction side bears pulling force; The center-of-gravity position of rotating part drops on the last time of jacking face of stock 20 on tower crane, and the stressed of stock supporting leg 21 on the introduction face of stock 20 is close to zero, and what the stock supporting leg 21 of jacking face was born is the total weight of rotating part on the tower crane.
According to as above analyzing; Under normal jacking state; The center-of-gravity position of rotating part drops on the jacking face in the requirement; To only bear less pressure so connect stock supporting leg 21 and the force transducer on the connecting portion between the undersetting supporting leg 31 of introduction face one side of stock 20, the stressing conditions of force transducer 80 is measured in the setting of the force transducer 80 through connecting undersetting supporting leg 31 and stock supporting leg 21; Whether the last rotating part that can learn tower crane intuitively trim, thereby judges whether to carry out the work of follow-up dismounting standard knot 40.
As shown in Figure 4, force transducer 80 is the pin type force transducer.Have the stock connecting bore on the stock supporting leg 21, have the bearing connecting bore coaxial with the stock connecting bore on the undersetting supporting leg 31, the pin type force transducer passes stock connecting bore and bearing connecting bore.
Can know according to the foregoing description, on bearing 30 and stock 20, force transducer is set, whether the last rotating part that can predict tower crane trim.Force transducer is not limited to the pin type force transducer, when bearing 30 and stock 20 do not adopt the pin type connection mode and when adopting other connection modes, force transducer also can be other types, for example be bolt fastening or shearing beam measuring load sensor.
According to one embodiment of present invention, force transducer is provided with the stock supporting leg 21 and corresponding undersetting supporting leg 31 that 80 connections are positioned at the introduction face side of stock 20.
Undersetting 30 is connected through force transducer 80 with stock 20, can measures on the stock supporting leg 21 through force transducer 80 and will carry great power, the size through this power is a whether balance of decidable tower crane top.As shown in Figures 2 and 3, stock 20 has 4 supporting legs to be connected with undersetting 30, and jacking face side has two, and introducing the face side has two.Preferably, at introduction face force transducer 80 is installed, when tower crane was in non-jacking state, stock 20 hung on the undersetting 30, bore stock 20 weight as 80 of the force transducers of connecting portion; When tower crane is in the jacking state; In last rotating part office during in state of equilibrium; Force transducer 80 does not stress yet, so, force transducer 80 is arranged on the connecting portion of introduction face side; Load-carrying capacity to force transducer 80 is less demanding, therefore can reduce the cost of balance master system.
Preferably, between two stock supporting legs 21 of the introduction face side of stock 20 and corresponding undersetting supporting leg 31, all be connected through force transducer 80.
All be connected between two stock supporting legs 21 of introduction face one side of stock 20 and the undersetting supporting leg 31 of undersetting 30 through force transducer 80, can be so that result of a measurement be more accurate.In addition, under the situation less demanding to survey precision, for cost-cutting, also can be just any one supporting leg in two supporting legs of the introduction face side of stock 20 be connected with employing force transducer 80 between the undersetting supporting leg 31.
According to another embodiment of the invention, all be connected between each undersetting supporting leg 31 and corresponding each stock supporting leg 21 through force transducer 80.
Under exigent situation to survey precision; All be connected between all undersetting supporting legs 31 and the stock supporting leg 21 through force transducer 80; Judge stressed on the stock supporting leg 21 comprehensively; Thereby whether the last rotating part of accurately confirming tower crane reaches state of equilibrium, avoids dangerous generation.
As shown in Figure 5, the balance master system of tower crane also comprises measurement display unit 90, is connected with force transducer 80 communications, and shows the testing result of force transducer 80.
Communicating by letter between measurement display unit 90 and the force transducer 80 is connected, and indicates force transducer 80 when bearing pressure when the operator observes measurement display unit 90, can conductor driver with suspension hook to equilibrium arm one side shifting; Indicate force transducer 80 when bearing pulling force when the operator observes measurement display unit, can conductor driver with suspension hook to arm one side shifting; If the stressing conditions that measurement display unit demonstrates force transducer 80 near zero point the time, shows that then next step disassemble and assemble work can be carried out in state of equilibrium in the rotating part office on the tower crane.By on can know, demonstrate the stressing conditions of force transducer 80 with force transducer 80 bonded assembly measurement display unit, just can know on tower crane this moment whether trim of rotating part intuitively, thereby the safety of enhanced system.
Can measurement display unit 90 be arranged in the operator's compartment of tower crane; Thereby the driver of tower crane can directly observe the stressing conditions of stock supporting leg 21; Thereby fast speed is judged the whether trim of last rotating part of tower crane, makes operation and control quick more and convenient.
Preferably, measurement display unit 90 comprises: signal processing unit 91, and the measurement signal that reception force transducer 80 sends also converts thereof into take off data; Data handing and display unit 92 are connected with signal processing unit 91 communications, the take off data that reception and processing signals processing unit 91 send, and show take off data.
Signal processing unit 91 can be integrated in the measurement display unit 90 with data handing and display unit 92, becomes the component part of measurement display unit 90.Force transducer 80 detects the stressed of stock 20; And measurement signal is sent to signal processing unit 91; Signal processing unit 91 receives measurement signal and converts thereof into take off data; Send take off data to communicate by letter with it bonded assembly data handing and display unit 92 again, data handing and display unit 92 receive take off data and display it.Can be connected and carry out the signal transmission through transmission cable between measurement display unit 90 and the force transducer, perhaps carry out the signal transmission through wireless transmission and receiving device through wireless mode between the two.
The present invention also provides a kind of tower crane, and tower crane comprises the balance master system of aforesaid tower crane.
The balance master system of tower crane is described in detail in the above-described embodiments, is not described in detail in this.The miscellaneous part of tower crane of the present invention is conventional components of the prior art, also is not described in detail at this.After being assemblied in balance master system on the tower crane; Whether balance to the last rotating part of tower crane has had tangible indication; Reduced under the dismounting operating mode requirement to operator's technical capacity; Stopped because the erroneous judgement that artificial assumption brings can reduce the generation of the grave accident of tower machine dismounting operating mode significantly.
From above description, can find out that the above embodiments of the present invention have realized following technique effect:
Tower crane of the present invention and balance master system thereof; Detect the force-bearing situation of stock through the force transducer that connects undersetting and stock; Thereby judge under the dismounting operating mode of tower crane whether rotating part reaches state of equilibrium on it, has improved the usage safety performance of tower crane.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the balance master system of a tower crane, tower crane comprises undersetting (30) and stock (20), it is characterized in that, comprises force transducer (80), said undersetting (30) is connected through said force transducer (80) with said stock (20).
2. the balance master system of tower crane according to claim 1; It is characterized in that; Said undersetting (30) is provided with undersetting supporting leg (31); Said stock (20) is provided with stock supporting leg (21), and said force transducer (80) connects said undersetting supporting leg (31) and said stock supporting leg (21).
3. the balance master system of tower crane according to claim 2 is characterized in that, said force transducer (80) is the pin type force transducer.
4. the balance master system of tower crane according to claim 3; It is characterized in that; Has the stock connecting bore on the said stock supporting leg (21); Have the bearing connecting bore coaxial with said stock connecting bore on the said undersetting supporting leg (31), said pin type sensor passes said stock connecting bore and said bearing connecting bore.
5. the balance master system of tower crane according to claim 2 is characterized in that, said force transducer (80) connects the said stock supporting leg (21) and the corresponding said undersetting supporting leg (31) of the introduction face side that is positioned at said stock (20).
6. the balance master system of tower crane according to claim 5; It is characterized in that, be positioned between two stock supporting legs (21) and the corresponding said undersetting supporting leg (31) of introduction face side of said stock (20) and all be connected through said force transducer (80).
7. the balance master system of tower crane according to claim 2 is characterized in that, all is connected through said force transducer (80) between each said undersetting supporting leg (31) and corresponding each said stock supporting leg (21).
8. according to the balance master system of each described tower crane in the claim 1 to 7, it is characterized in that, also comprise measurement display unit (90), be connected with said force transducer (80) communication, and show the testing result of said force transducer (80).
9. the balance master system of tower crane according to claim 8 is characterized in that, said measurement display unit (90) comprising:
Signal processing unit (91) receives the measurement signal that said force transducer (80) sends and converts thereof into take off data;
Data handing and display unit (92) are connected with said signal processing unit (91) communication, receive and handle the take off data that said signal processing unit (91) sends, and show said take off data.
10. a tower crane is characterized in that, said tower crane comprises the balance master system of each described tower crane in the claim 1 to 9.
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| CN 201010577756 CN102092648B (en) | 2010-12-07 | 2010-12-07 | Tower crane and balance detection system thereof |
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| CN 201010577756 CN102092648B (en) | 2010-12-07 | 2010-12-07 | Tower crane and balance detection system thereof |
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| CN102092648B true CN102092648B (en) | 2012-12-19 |
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| CN102616679B (en) * | 2012-04-16 | 2013-09-04 | 中联重科股份有限公司 | Tower crane, climbing frame thereof and climbing frame installation method |
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| FR3077282B1 (en) * | 2018-01-30 | 2022-08-19 | Manitowoc Crane Group F Sas | MOUNTING SYSTEM FOR A CRANE, CRANE WITH SUCH MOUNTING SYSTEM AND METHOD FOR PERFORMING MOUNTING ON SUCH CRANE |
| CN113264459A (en) * | 2021-05-31 | 2021-08-17 | 湖南三一塔式起重机械有限公司 | Tower crane and jacking and balancing method thereof |
| CN113734995B (en) * | 2021-06-28 | 2024-02-13 | 廊坊中建机械有限公司 | Full-automatic jacking adds tower crane of festival |
| CN116735079B (en) * | 2023-08-15 | 2023-11-14 | 山东宇飞传动技术有限公司 | Mining winch balance detection equipment and method |
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