CN202643154U - Crane with weight monitoring function - Google Patents
Crane with weight monitoring function Download PDFInfo
- Publication number
- CN202643154U CN202643154U CN 201220297642 CN201220297642U CN202643154U CN 202643154 U CN202643154 U CN 202643154U CN 201220297642 CN201220297642 CN 201220297642 CN 201220297642 U CN201220297642 U CN 201220297642U CN 202643154 U CN202643154 U CN 202643154U
- Authority
- CN
- China
- Prior art keywords
- pulley
- crane
- tower
- hoisting
- monitoring function
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a crane with a weight monitoring function. The crane with the weight monitoring function comprises a tower body, a crane boom and a tower cap body which is arranged on the tower body. A work drive motor is arranged below the tower body, a lifting motor is arranged on the tail end of the crane boom, a range trolley is arranged below the crane boom, a second guide wheel is arranged on the crane boom, a first guide wheel is arranged on the top end of the tower cap body, a lifting steel wire rope of the lifting motor respectively penetrates through the first guide wheel and the second guide wheel to be connected with the tower cap body and the crane boom, and a weight monitor unit is arranged on the lifting steel wire rope between the first guide wheel and the second guide wheel. A force sensor does not detect tensile force on the rope directly, but measures lifting weight by utilizing shear force on a pulley, and the shear force is produced when tensile force reacts on a pulley, and the tensile force is produced because the steel wire rope is stressed. Thus, by means of the crane with the weight monitoring function, demands on the force sensor can be reduced, loss on the force sensor can be reduced, and meanwhile, measurement of a large measuring range can be achieved.
Description
Technical field
The utility model relates to a kind of tower crane (hereinafter to be referred as the tower machine), particularly a kind of hoisting crane with the weight monitoring function.
Background technology
As the indispensable key equipment in camp site, the range of use of tower machine is increasingly extensive.But in recent years, a series of tower machines because of overload, the initiation of transfiniting are toppled over accident and have been caused serious personal casualty and property damage, this has also caused the strong interest of the public to this excessive risk operation, how the generation of establishment accident has endangered into problem demanding prompt solution with minimizing, and how to realize that the Real-Time Monitoring of tower machine state also becomes further important to ensure its safe operation.At present, traditional safety mechanical killer can only provide passive defencive function, can not really realize the condition monitoring of tower machine, can not satisfy application demand.
The utility model content
The utility model purpose: technical problem to be solved in the utility model is for the deficiencies in the prior art, and a kind of hoisting crane with the weight monitoring function is provided.
In order to solve the problems of the technologies described above, the utility model discloses a kind of hoisting crane with the weight monitoring function, comprise body of the tower, crane arm and be arranged on tower cap body on the body of the tower, the body of the tower below is provided with work drive motor, the crane arm tail end is provided with lifting motor, described crane arm below is provided with the amplitude dolly, crane arm is provided with the second track adjusting wheel, tower cap body top is provided with the first track adjusting wheel, the hoist rope of lifting motor, pass respectively the first track adjusting wheel and the second track adjusting wheel, connect tower cap body and crane arm, described tower cap body is provided with weight hoisting capacity monitor.
In the utility model, described weight monitor comprises three pulley sensing devices, and described three pulley sensing devices are linking number weighted-voltage D/A converter, hoisting capacity data memory hoisting capacity relay successively.
In the utility model, described three pulley sensing devices comprise adapter plate, set gradually the first pulley, the second pulley, the 3rd pulley and anchor shaft on the adapter plate from top to bottom, the second pulley center is established shifting axle, be provided with the power sensor between shifting axle and the anchor shaft, described hoist rope is staggered successively to pass the first pulley, the second pulley and the 3rd pulley, and described power sensor is connected with described D and A converter, hoisting capacity data memory and hoisting capacity relay successively.
In the utility model, described adapter plate is provided with slideway, and described shifting axle is positioned at described slideway.
In the utility model, described hoisting capacity relay is provided with warning device.
Beneficial effect: the disclosed three pulley sensing devices of the utility model are fixed on the tower cap body, the movement that can not produce any direction, and the steel cable that hoists passes the first pulley, the second pulley and the 3rd pulley.When being tightened up on the steel rope, the power sensor is measured rope and is acted on pressure on the fixed pulley, just can obtain the rope upper pulling force by linear relationship again, is converted into actual hoisting capacity at last again.Can find out, the power sensor is not direct-detection rope upper pulling force, but the tension force that utilizes the stressed generation of steel rope reacts on the shearing force that pulley produces, measure hoisting capacity, do like this requirement that not only can reduce the power sensor, minimizing can also realize the measurement with relatively large journey simultaneously to its loss.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is done further to specify, above-mentioned and/or otherwise advantage of the present utility model will become apparent.
Fig. 1 is the general illustration of tower machine hoisting capacity monitoring.
Fig. 2 is tower machine hoisting capacity monitoring scheme drawing.
Fig. 3 is the stressed sketch of steel rope.
Fig. 4 is three pulley sensing device Facad structure scheme drawings.
Fig. 5 is Fig. 4 structure scheme drawing.
The specific embodiment
As shown in Figure 1, the utility model discloses a kind of hoisting crane with the weight monitoring function, hoisting crane comprises; Work drive motor 1, body of the tower 2, lifting motor 3, tower cap body 4, the first track adjusting wheels 5, hoist rope 7, crane arm 8; On the tower cap body 4 the weight monitor is installed.The second track adjusting wheel 9 is arranged, amplitude dolly 10 on the crane arm 8; Amplitude dolly 10 bottoms hang with weight 11.
As shown in Figure 2, the weight monitor comprises: three pulley sensing devices 6, D and A converter 12, hoisting capacity data memory 13, amplitude relay 14, warning device 15.
Three pulley sensing devices 6 comprise: the first pulley 16, the second pulley 17, the 3rd pulley 18 and adapter plate 19, power sensor 20, shifting axle 21, anchor shaft 22.
As shown in Figure 4 and Figure 5, the movement that three pulley sensing devices 6 can not produce any direction, the first pulley 16 and the 3rd pulley 18 are fixed pulley, the first pulley 16 and the 3rd pulley 18 are fixed on the adapter plate 19.The second pulley 17 can be in the slideway 23 interior slips of adapter plate 19, and the second pulley 17 is movable pulleys.One end of power sensor 20 is fixed on the shifting axle 21 on the second pulley 17, and the other end is fixed on the anchor shaft 22 on the adapter plate 19.Three pulley sensing devices 6 are fixed on the tower cap body 4 by adapter plate 19.Shifting axle 21 can move in the slideway of adapter plate 19.
Such as Fig. 3, Fig. 4 and shown in Figure 5, hoist rope 7 passes the first pulley 16 and the second pulley 17 and the 3rd pulley 18, when there is weight 10 in amplitude dolly 9 bottoms, hoist rope 7 is tightened up, hoist rope 7 has tangential angle at the second pulley 17, the tension force of hoist rope 7 stressed generations, as shown in Figure 4, can react on the second pulley 17, have along the tangential shearing force F1 of the second pulley 17 and normal pressure F2 radially, power sensor 20 is measured the normal pressure F2 analog signal on the 3rd pulley 18, can obtain tangential shearing force F1 analog signal by triangular relationship, namely obtains the hoisting capacity analog signal.
As shown in Figure 2, at tower cap body hoisting capacity data memory 13 is installed, hoisting capacity data memory 13 is used for storing the hoisting capacity data.
The concrete steps of hoisting capacity method for supervising of the present utility model are as follows:
Step 1: when there was weight 10 in amplitude dolly 9 bottoms, hoist rope 7 had tangential angle sin α along the second pulley 17, and the tension force of hoist rope 7 stressed generations can react on the second pulley 17, and tangential shearing force F1 and normal pressure F2 radially have following relation:
F
2=F
1×sinα
（1）
Step 2: power sensor 20 is measured the normal pressure F2 analog signal on the 3rd pulley 18, can obtain tangential shearing force F1 analog signal by triangular relationship formula (1), obtains the hoisting capacity analog signal.
Step 3: the hoisting capacity analog signal that power sensor 20 gathers can be converted to digital signal through D and A converter 12.
Step 3: in actual testing process, because the impact of suddenly startup, braking or wind pendulum can make detected value that relatively large deviation is arranged, detect error for reducing, need to be with the digital signal filter of D and A converter 12 conversions.Filter step: the digital signal continuous sampling of 1. at first D and A converter 12 being changed 5 times, with from small to large successively ordering of sampled value, get intermediate value as this sampled value, as filter value of digital signal, then repeat 20 steps just now 1., namely have 20 through the sampled value of a filtering, 2. with these 20 through the cumulative summation of filtered digital signal samples value once, find out maxim and minimum value, again from cumulative and deduct maxim and minimum value, namely 20-2 digital signal sampling value summation can obtain final hoisting capacity efficiently sampling value Q.Final hoisting capacity significant digit signal sampling value Q deposits in the hoisting capacity data memory 13.
Step 4: amplitude the dolly amplitude that moves and the effective collection value that deposits the hoisting capacity in the hoisting capacity data memory 21 in that will deposit amplitude data memory device 20 in are made product, and the product data are classified.If the product of amplitude R and corresponding hoisting capacity Q is less than or equal to safe hoisting moment M, with this type of product Data classification to the secure data district; If the product of amplitude R and corresponding hoisting capacity Q is greater than safe hoisting moment M and less than 10% of safe hoisting moment M, with this type of product Data classification to dangerous data.The data in secure data district are organized record as daily worker and are saved in the hoisting capacity data memory 13.
Step 5: if there are data the dangerous data field of hoisting moment, hoisting capacity relay 14 can move, and drives 1 braking of tower machine work drive motor.
The utility model provides a kind of hoisting crane with the weight monitoring function; method and the approach of this technical scheme of specific implementation are a lot; the above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.In the present embodiment not clear and definite each component part all available prior art realized.
Claims (5)
1. hoisting crane with the weight monitoring function, comprise body of the tower, crane arm and be arranged on tower cap body on the body of the tower, the body of the tower below is provided with work drive motor, the crane arm tail end is provided with lifting motor, described crane arm below is provided with the amplitude dolly, crane arm is provided with the second track adjusting wheel, tower cap body top is provided with the first track adjusting wheel, the hoist rope of lifting motor, pass respectively the first track adjusting wheel and the second track adjusting wheel, connect tower cap body and crane arm, it is characterized in that described tower cap body is provided with the weight monitor.
2. a kind of hoisting crane with the weight monitoring function according to claim 1, it is characterized in that, described weight monitor comprises three pulley sensing devices, and described three pulley sensing devices are linking number weighted-voltage D/A converter, hoisting capacity data memory and hoisting capacity relay successively.
3. a kind of hoisting crane with the weight monitoring function according to claim 2, it is characterized in that, described three pulley sensing devices comprise adapter plate, set gradually the first pulley, the second pulley, the 3rd pulley and anchor shaft on the adapter plate from top to bottom, the second pulley center is established shifting axle, be provided with the power sensor between shifting axle and the anchor shaft, described hoist rope is staggered successively to pass the first pulley, the second pulley and the 3rd pulley, and described power sensor is connected with described D and A converter, hoisting capacity data memory and hoisting capacity relay successively.
4. a kind of hoisting crane with the weight monitoring function according to claim 3 is characterized in that described adapter plate is provided with slideway, and described shifting axle is positioned at described slideway.
5. the described a kind of hoisting crane with the weight monitoring function of any one in 4 according to claim 2 is characterized in that described hoisting capacity relay is provided with warning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220297642 CN202643154U (en) | 2012-06-21 | 2012-06-21 | Crane with weight monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220297642 CN202643154U (en) | 2012-06-21 | 2012-06-21 | Crane with weight monitoring function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202643154U true CN202643154U (en) | 2013-01-02 |
Family
ID=47412291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220297642 Expired - Fee Related CN202643154U (en) | 2012-06-21 | 2012-06-21 | Crane with weight monitoring function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202643154U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103640979A (en) * | 2013-11-19 | 2014-03-19 | 中联重科股份有限公司 | Height control method of tower crane lifting suspension hook, apparatus and system thereof, and tower crane |
| CN105366573A (en) * | 2015-10-30 | 2016-03-02 | 徐州建机工程机械有限公司 | Arrangement form of load lifting limiter of cantilever tower crane |
| CN106219411A (en) * | 2016-07-26 | 2016-12-14 | 武汉船用机械有限责任公司 | A kind of lifting rope that is provided with fixes the arm of end connection device |
| CN108358072A (en) * | 2018-02-11 | 2018-08-03 | 哈尔滨工业大学 | A kind of the auxiliary hanging device and control method of climbing robot |
| CN108639980A (en) * | 2018-06-14 | 2018-10-12 | 广东省特种设备检测研究院顺德检测院 | Derrick crane load lifting limiter detection device |
-
2012
- 2012-06-21 CN CN 201220297642 patent/CN202643154U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103640979A (en) * | 2013-11-19 | 2014-03-19 | 中联重科股份有限公司 | Height control method of tower crane lifting suspension hook, apparatus and system thereof, and tower crane |
| CN103640979B (en) * | 2013-11-19 | 2016-02-03 | 中联重科股份有限公司 | The height control method of tower crane lifting suspension hook, device, system and tower machine |
| CN105366573A (en) * | 2015-10-30 | 2016-03-02 | 徐州建机工程机械有限公司 | Arrangement form of load lifting limiter of cantilever tower crane |
| CN106219411A (en) * | 2016-07-26 | 2016-12-14 | 武汉船用机械有限责任公司 | A kind of lifting rope that is provided with fixes the arm of end connection device |
| CN106219411B (en) * | 2016-07-26 | 2018-02-09 | 武汉船用机械有限责任公司 | A kind of arm that end connection device is fixed provided with lifting rope |
| CN108358072A (en) * | 2018-02-11 | 2018-08-03 | 哈尔滨工业大学 | A kind of the auxiliary hanging device and control method of climbing robot |
| CN108358072B (en) * | 2018-02-11 | 2019-07-16 | 哈尔滨工业大学 | A kind of the auxiliary hanging device and control method of climbing robot |
| CN108639980A (en) * | 2018-06-14 | 2018-10-12 | 广东省特种设备检测研究院顺德检测院 | Derrick crane load lifting limiter detection device |
| CN108639980B (en) * | 2018-06-14 | 2024-04-09 | 广东省特种设备检测研究院顺德检测院 | Weight limiter detection device for tower crane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202643154U (en) | Crane with weight monitoring function | |
| CN201882830U (en) | Anti-overturning moment limiter system and traveling crane | |
| CN102464270B (en) | Overturning-preventing torque limiter and movable crane | |
| CN201665482U (en) | Tower crane overturning-prevention safety monitoring device | |
| CN201580908U (en) | Overload protecting system of crane lifting transmission chain | |
| CN204405242U (en) | A kind of belt wheel side-compression cable tension real-time detection apparatus | |
| CN101750180A (en) | Dynamic detection method of anti-wind capability of anti-wind device of port track crane | |
| CN202080825U (en) | Multifunctional load measuring instrument | |
| CN204454308U (en) | Novel tower crane monitoring system | |
| CN102842155A (en) | Safety monitoring system for large-size hoisting machinery | |
| CN202808204U (en) | Safety monitoring system for large hoisting machinery | |
| CN108639980B (en) | Weight limiter detection device for tower crane | |
| CN103569871A (en) | Method and device for limiting torque of hoisting equipment and hoisting equipment | |
| CN201971576U (en) | Moment limiting device and tower crane with same | |
| CN104444812A (en) | Novel crane monitoring system | |
| CN203534840U (en) | Tower-type air winch performance test and experiment platform | |
| CN104515673A (en) | Rail clamping device reliability detection method and apparatus | |
| CN220472928U (en) | Free falling body test device of speed limiter | |
| CN207844955U (en) | A kind of tower crane moment limiter and its safety control system | |
| CN204162333U (en) | Based on the tower machine monitoring device of STM32 | |
| CN203064922U (en) | Multi-objective optimal control device and system for elevator | |
| CN202351135U (en) | System for monitoring fatigue of steel wire rope on line based on five-point bending test | |
| CN101269780A (en) | Remote monitoring method and apparatus for bridge machine | |
| CN203171336U (en) | Steel rope detecting device for counterweight system of numerical control milling boring mill | |
| CN206014288U (en) | A kind of extra large work folding-jib crane released rope detecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20170621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |