CN114408747A - Method and device for detecting suspension load bending moment and operating machine - Google Patents

Method and device for detecting suspension load bending moment and operating machine Download PDF

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Publication number
CN114408747A
CN114408747A CN202210068406.8A CN202210068406A CN114408747A CN 114408747 A CN114408747 A CN 114408747A CN 202210068406 A CN202210068406 A CN 202210068406A CN 114408747 A CN114408747 A CN 114408747A
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CN
China
Prior art keywords
bending moment
suspension
weight
hoisting
wire rope
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.)
Pending
Application number
CN202210068406.8A
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Chinese (zh)
Inventor
周帅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Sany Medium Lifting Machinery Co Ltd
Original Assignee
Hunan Sany Medium Lifting Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hunan Sany Medium Lifting Machinery Co Ltd filed Critical Hunan Sany Medium Lifting Machinery Co Ltd
Priority to CN202210068406.8A priority Critical patent/CN114408747A/en
Publication of CN114408747A publication Critical patent/CN114408747A/en
Pending legal-status Critical Current

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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
    • B66C13/16—Applications of indicating, registering, or weighing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C15/00—Safety gear
    • B66C15/06—Arrangements or use of warning devices
    • B66C15/065—Arrangements or use of warning devices electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88—Safety gear

Abstract

The invention relates to the technical field of operating machinery, in particular to a method and a device for detecting a suspension loading bending moment and operating machinery. The invention provides a method for detecting a suspension loading bending moment, which comprises the following steps: acquiring the hoisting load weight, the boom elevation angle and the boom length; and determining the hoisting bending moment according to the hoisting weight, the boom elevation angle and the boom length. The invention provides a method and a device for detecting a suspension bending moment and an operating machine, which can accurately detect the actual load on the operating machine and ensure the safe operation of the operating machine.

Description

Method and device for detecting suspension load bending moment and operating machine
Technical Field
The invention relates to the technical field of operating machinery, in particular to a method and a device for detecting a suspension loading bending moment and operating machinery.
Background
In a type of working machine having an arm support, the accuracy of load detection borne by the working machine is an important factor affecting the safe operation of the working machine. Such as cranes, of the prior art, are typically provided with a load detection system.
In some crane load detection systems in the prior art, load data of a crane are converted by detecting hydraulic oil pressure of a luffing cylinder, however, the detection mode is greatly influenced by factors such as friction between a cylinder rod and a cylinder barrel of the luffing cylinder and flexible bending of an arm support, and the like, and the error of the load data of the crane calculated by the detection mode is large, so that safe operation of the crane cannot be effectively guaranteed.
Therefore, how to accurately and effectively detect the actual load of the hoisting operation machine and ensure the safe operation of the hoisting operation machine is a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention provides a method and a device for detecting a suspension bending moment and an operating machine, which can accurately detect the actual load on the operating machine and ensure the safe operation of the operating machine.
The invention provides a method for detecting a suspension loading bending moment, which comprises the following steps:
acquiring the hoisting load weight, the boom elevation angle and the boom length;
and determining the hoisting bending moment according to the hoisting weight, the boom elevation angle and the boom length.
According to the method for detecting the suspension load bending moment, provided by the invention, the step of acquiring the suspension load weight comprises the following steps:
acquiring the pulling force borne by a single steel wire rope;
and determining the hoisting load weight according to the pulling force applied to the single steel wire rope and the multiplying power of the pulley block.
According to the method for detecting the suspension loading bending moment, provided by the invention, the step of acquiring the pulling force applied to a single steel wire rope comprises the following steps:
and acquiring the pulling force applied to the fixed end of the single steel wire rope, wherein the fixed end is the end of the single steel wire rope fixed on the hook component or the arm support.
According to the method for detecting the suspension loading bending moment, provided by the invention, after the suspension loading bending moment is determined, the method further comprises the following steps:
and when the suspension load bending moment is determined to be larger than a preset value, alarming information is sent.
A second aspect of the present invention provides a suspension bending moment detection apparatus, including:
the hoisting weight acquisition module is used for acquiring the hoisting weight of the object hoisted by the arm support;
the arm support elevation angle acquisition module is used for acquiring an arm support elevation angle;
the arm support length obtaining module is used for obtaining the length of the arm support;
and the data processing module is used for determining the hoisting bending moment according to the hoisting weight, the boom elevation angle and the boom length.
According to the suspension load bending moment detection device provided by the invention, the suspension load weight acquisition module comprises:
the tension acquisition module is used for acquiring tension borne by a single steel wire rope;
and the hoisting weight determining module is used for determining the hoisting weight according to the pulling force applied to the single steel wire rope and the multiplying power of the pulley block.
According to the hoisting load bending moment detection device provided by the invention, the tension acquisition module is arranged at the fixed end of the single steel wire rope, and the fixed end is one end of the single steel wire rope fixed on the hoisting hook component or the arm support.
According to the invention, the hoisting bending moment detection device further comprises:
and the alarm module is used for sending alarm information when the suspension load bending moment is determined to be greater than the preset value.
According to the suspension load bending moment detection device provided by the invention, the suspension load weight acquisition module comprises a wireless data transmission unit, and the wireless data transmission unit is used for transmitting the acquired suspension load weight; the data processing module comprises a wireless data receiving unit, and the wireless data receiving unit is used for receiving the suspended load weight.
A third aspect of the present invention provides a working machine including the hanging bending moment detection device according to any one of the above, or capable of implementing the hanging bending moment detection method according to any one of the above.
Has the advantages that:
the invention provides a method for detecting a suspension loading bending moment, which comprises the following steps: acquiring the hoisting load weight, the boom elevation angle and the boom length; and determining the hoisting bending moment according to the hoisting weight, the boom elevation angle and the boom length. The suspension bending moment is a moment applied to a connection position of the arm support and the machine body by the weight of the suspended object. According to the method for detecting the suspension bending moment, the suspension bending moment can be accurately determined through the suspension weight, the boom elevation angle and the boom length, the actual load condition of the operation machine can be accurately reflected through the suspension bending moment, and the working stability of the operation machine can be monitored more accurately.
According to the suspension load bending moment detection device and the operation machine, the suspension load bending moment can be accurately determined through the suspension load weight, the boom elevation angle and the boom length, and therefore the working stability of the operation machine can be monitored more accurately. The derivation process of the beneficial effect is substantially similar to the derivation process of the beneficial effect brought by the suspension bending moment detection method, and is not repeated here.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for detecting a suspension bending moment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method for detecting a suspension bending moment according to another embodiment of the present invention;
fig. 3 is a schematic structural view of a hook assembly in an embodiment of the invention.
Reference numerals:
11: a wire rope; 12: a hook assembly; 13: a movable pulley block; 14: and (4) a rope knot.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes a method, an apparatus, and a working machine for detecting a suspension bending moment according to an embodiment of the present invention with reference to fig. 1 to 3.
Referring to fig. 1, a method for detecting a suspension loading bending moment provided in an embodiment of the present invention includes the steps of:
s10, acquiring the hanging load weight, the arm support elevation angle and the arm support length;
and S11, determining the suspension bending moment according to the suspension load weight, the arm support elevation angle and the arm support length.
It should be understood that the working machine is provided with an arm support, a fixed pulley block is arranged on the arm support, a movable pulley block 13 is arranged on the hook component 12, a steel wire rope 11 is wound between the movable pulley block 13 and the fixed pulley block, one end of the steel wire rope 11 is connected with a hoisting mechanism of the working machine, and the other end of the steel wire rope is fixed on the hook component 12 or the arm support through a cable joint 14 after passing through the fixed pulley block and the movable pulley block 13, as shown in fig. 3. The hanging weight refers to the weight of the article hung by the hook assembly 12. In the operation process, the elevation angle and the extension length of the arm support correspondingly change along with the operation process. Wherein the elevation angle of the arm support is an included angle between the axis line of the arm support and the horizontal plane.
The suspension bending moment is a moment applied to a connection position of the arm support and the machine body by the weight of the suspended object. The suspension bending moment can be calculated according to the suspension weight, the boom elevation angle and the boom length, for example, when the fixed pulley block is arranged at the first end of the boom and the second end of the boom is hinged to the body of the working machine, the suspension bending moment M can be calculated according to a formula M ═ G · cos α · L, where G is the suspension weight, α is the boom elevation angle, and L is the boom length.
Therefore, the suspension loading bending moment detection method provided by the embodiment can accurately determine the suspension loading bending moment through the suspension loading weight, the boom elevation angle and the boom length, can accurately reflect the actual load condition of the operation machinery through the suspension loading bending moment, and avoids the error of the amplitude-variable oil cylinder caused by the hydraulic problem compared with the situation that the load of the operation machinery is detected through the amplitude-variable oil cylinder in the prior art. Therefore, the method for detecting the suspension bending moment provided by the embodiment can monitor the working stability of the working machine more accurately.
In a further embodiment, the sling weight is obtained by:
s101, acquiring the pulling force applied to a single steel wire rope 11;
and S102, determining the hoisting load according to the pulling force applied to the single steel wire rope 11 and the multiplying power of the pulley block.
In some embodiments, a tension detection component may be disposed at a fixing point of the steel wire rope 11 and the hook assembly 12, or a fixing point of the steel wire rope 11 and the arm support, and the tension detection component can detect tension applied to the steel wire rope 11. The steel wire rope 11 lifts the article through the pulley assembly, the pulley assembly can play a role in magnification, and the product of the pulling force borne by the single steel wire rope 11 and the magnification of the pulley block is the weight of the lifted article.
In this embodiment, the hoisting load weight is determined by detecting the pulling force of a single steel wire rope 11, on one hand, the actual pulling force received by the steel wire rope 11 can be determined, when the pulling force received by the steel wire rope 11 exceeds a set value, an operator can be prompted in an alarm manner, and the weight of the hoisted objects exceeds the single-rope pulling force safety value of the steel wire rope 11, so that the potential safety hazard that the steel wire rope 11 exceeds the safe allowable load and the hoisting machinery exceeds the stability range due to overload is eliminated. On the other hand, the pulling force received through a single steel wire rope 11 is smaller than the whole weight of the weighed suspended load article, and the detection component for detecting the pulling force of the single steel wire rope 11 is smaller in specification and higher in detection precision compared with the detection component for directly detecting the weight of the suspended load article.
In a further embodiment, after determining the suspension bending moment, the method further comprises:
and S12, when the suspension loading bending moment is determined to be larger than a preset value, alarming information is sent. In some embodiments, alarm information can be sent out by means of sending out alarm sound, lighting an alarm lamp and the like so as to remind operating personnel and avoid unstable conditions of the operating machine.
In the following, a detailed description is given of the method for detecting a suspension loading bending moment in the embodiment of the present invention with reference to the above embodiments, as shown in fig. 2, the method for detecting a suspension loading bending moment includes the steps of:
s101, acquiring the pulling force applied to a single steel wire rope 11;
s102, determining the hoisting load weight according to the pulling force applied to the single steel wire rope 11 and the multiplying power of the pulley block;
s11, determining a hoisting bending moment according to the hoisting weight, the boom elevation angle and the boom length;
and S12, when the suspension loading bending moment is determined to be larger than a preset value, alarming information is sent.
Therefore, the suspension loading bending moment detection method provided by the embodiment can accurately reflect the actual load condition of the operation machine through the suspension loading bending moment, and further can more accurately monitor the working stability of the operation machine.
The embodiment of the invention also provides a suspension load bending moment detection device which comprises a suspension load weight acquisition module, an arm support elevation angle acquisition module, an arm support length acquisition module and a data processing module.
The hoisting weight obtaining module is used for obtaining the hoisting weight of the boom hoisting object. In some embodiments, the sling weight acquisition module may include a force measurement device, which has the same structure and operation principle as those of the prior art, and will not be described herein again.
The arm support elevation angle acquisition module is used for acquiring an arm support elevation angle. In some embodiments, the boom elevation angle obtaining module may be an angular displacement measuring device, and may be specifically disposed at a hinge position of the boom and the machine body, and is configured to measure the boom elevation angle by the angular displacement measuring device.
The arm support length obtaining module is used for obtaining the arm support length. In some embodiments, the boom length obtaining module may be specifically configured as a displacement measuring device, the displacement measuring device is configured at a joint of the boom sections of the boom, when two adjacent boom sections are displaced relatively, the extension length of the boom can be measured by the displacement measuring device, and the overall length of the boom can be calculated.
And the data processing module is used for determining the hoisting bending moment according to the hoisting weight, the boom elevation angle and the boom length.
In this way, the suspension load bending moment detection device provided in this embodiment correspondingly obtains the suspension load weight, the boom elevation angle and the boom length through the suspension load weight obtaining module, the boom elevation angle obtaining module and the boom length obtaining module, respectively.
And then, the data processing module determines the hoisting bending moment according to the hoisting weight, the boom elevation angle and the boom length.
In some embodiments, the data processing module, the suspended load weight obtaining module, the boom elevation angle obtaining module, and the boom length obtaining module may implement data transmission by way of wireless data transmission.
According to the arrangement, the suspension load bending moment detection device provided by the embodiment can accurately determine the suspension load bending moment through the suspension load weight, the boom elevation angle and the boom length, and can accurately reflect the actual load condition of the operation machine through the suspension load bending moment, so that the suspension load bending moment detection device provided by the embodiment can more accurately monitor the working stability of the operation machine. The derivation process of the beneficial effect is substantially similar to the derivation process of the beneficial effect brought by the suspension bending moment detection method, and is not repeated here.
In a further embodiment, the sling weight acquisition module comprises a tension acquisition module and a sling weight determination module.
The tension obtaining module is used for obtaining tension on the single steel wire rope 11. In some embodiments, the tension acquiring module is configured as a force measuring component for detecting the tension applied to the single steel wire rope 11.
And the hoisting weight determining module is used for determining the hoisting weight according to the pulling force applied to the single steel wire rope 11 and the multiplying power of the pulley block. In some embodiments, the hoisting load determination module is preset with a calculation formula, and the hoisting load can be calculated according to the product of the single steel wire rope 11 and the multiplying power of the pulley block.
So set up, the pulling force acquisition module confirms the elevating load weight through the pulling force that detects single wire rope 11, can confirm the actual pulling force that receives of wire rope 11 on the one hand, and when the pulling force that wire rope 11 received exceeded the setting value, the mode suggestion operation personnel of accessible warning, the weight of elevating load article has surpassed wire rope 11's pulling force safety value to get rid of wire rope 11 and surpass the safe potential safety hazard that allows the load and arouse hoisting machinery because the overload surpasss stability scope. On the other hand, the pulling force received through a single steel wire rope 11 is smaller than the whole weight of the weighed suspended load article, the pulling force detection part for detecting the single steel wire rope 11 is smaller than the detection part for directly detecting the weight of the suspended load article, the specification is smaller, the cost is effectively reduced, and the detection precision is higher.
In a further embodiment, the tension acquiring module is disposed at a fixed end of the single steel wire rope 11, and the fixed end is one end of the single steel wire rope 11 fixed to the hook assembly 12 or the arm support.
In some embodiments, the single wire rope 11 is fixedly connected to the winding mechanism at one end and is fixed to the hook assembly 12 by the cable joint 14 after passing around the pulley block at the other end. The tension acquiring module can be arranged inside the rope knot 14 and used for sensing the tension on the single steel wire rope 11.
In a further embodiment, the suspension bending moment detection device further comprises an alarm module, and the alarm module is used for sending alarm information when the suspension bending moment is determined to be larger than a preset value.
The alarm module can be specifically set into a sound alarm device, an alarm lamp and the like, and when the condition that the suspension load bending moment is greater than the preset value is determined, the alarm module sends alarm information to prompt an operator and avoid the unstable condition of the operation machine.
In a further embodiment, the overhead weight obtaining module comprises a wireless data transmitting unit for transmitting the obtained overhead weight; the data processing module comprises a wireless data receiving unit, and the wireless data receiving unit is used for receiving the suspended load weight.
In some embodiments, the data processing module may be disposed in a host of a control cabin of the work machine, and the wireless data transmission between the suspended load weight obtaining module and the data processing module can be realized through the wireless data transmitting unit and the wireless data receiving unit.
The embodiment of the invention also provides a working machine which comprises the suspension loading bending moment detection device or can realize the suspension loading bending moment detection method.
In some embodiments, the work machine may be embodied as a crane. According to the operation machine provided by the embodiment, the hoisting load bending moment can be accurately determined through the hoisting load weight, the boom elevation angle and the boom length, and further the working stability of the operation machine can be more accurately monitored. The derivation process of the beneficial effect is substantially similar to the derivation process of the beneficial effect brought by the suspension bending moment detection method, and is not repeated here.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A method for detecting a suspension loading bending moment is characterized by comprising the following steps:
acquiring the hoisting load weight, the boom elevation angle and the boom length;
and determining the hoisting bending moment according to the hoisting weight, the boom elevation angle and the boom length.
2. The method for detecting the suspension bending moment according to claim 1, wherein the acquiring the suspension weight comprises:
acquiring the pulling force borne by a single steel wire rope;
and determining the hoisting load weight according to the pulling force applied to the single steel wire rope and the multiplying power of the pulley block.
3. The method for detecting the suspension loading bending moment according to claim 2, wherein the step of acquiring the tensile force applied to the single steel wire rope comprises the following steps:
and acquiring the pulling force applied to the fixed end of the single steel wire rope, wherein the fixed end is the end of the single steel wire rope fixed on the hook component or the arm support.
4. The method for detecting a suspension bending moment according to any one of claims 1 to 3, wherein after the suspension bending moment is determined, the method further comprises the following steps:
and when the suspension load bending moment is determined to be larger than a preset value, alarming information is sent.
5. The utility model provides a suspension loading moment of flexure detection device which characterized in that includes:
the hoisting weight acquisition module is used for acquiring the hoisting weight of the object hoisted by the arm support;
the arm support elevation angle acquisition module is used for acquiring an arm support elevation angle;
the arm support length obtaining module is used for obtaining the length of the arm support;
and the data processing module is used for determining the hoisting bending moment according to the hoisting weight, the boom elevation angle and the boom length.
6. The suspended load bending moment detection device according to claim 5, wherein the suspended load weight acquisition module comprises:
the tension acquisition module is used for acquiring tension borne by a single steel wire rope;
and the hoisting weight determining module is used for determining the hoisting weight according to the pulling force applied to the single steel wire rope and the multiplying power of the pulley block.
7. The suspension loading bending moment detection device according to claim 6, wherein the tension acquisition module is arranged at a fixed end of the single steel wire rope, and the fixed end is one end of the single steel wire rope fixed on the hook assembly or the arm support.
8. The suspension bending moment detection device according to claim 7, further comprising:
and the alarm module is used for sending alarm information when the suspension load bending moment is determined to be greater than the preset value.
9. The suspension bending moment detection device according to claim 5, wherein the suspension weight obtaining module comprises a wireless data transmitting unit, and the wireless data transmitting unit is used for transmitting the obtained suspension weight; the data processing module comprises a wireless data receiving unit, and the wireless data receiving unit is used for receiving the suspended load weight.
10. A working machine comprising the suspension bending moment detection apparatus according to any one of claims 5 to 9, or capable of implementing the suspension bending moment detection method according to any one of claims 1 to 4.
CN202210068406.8A 2022-01-20 2022-01-20 Method and device for detecting suspension load bending moment and operating machine Pending CN114408747A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210068406.8A CN114408747A (en) 2022-01-20 2022-01-20 Method and device for detecting suspension load bending moment and operating machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210068406.8A CN114408747A (en) 2022-01-20 2022-01-20 Method and device for detecting suspension load bending moment and operating machine

Publications (1)

Publication Number Publication Date
CN114408747A true CN114408747A (en) 2022-04-29

Family

ID=81275097

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210068406.8A Pending CN114408747A (en) 2022-01-20 2022-01-20 Method and device for detecting suspension load bending moment and operating machine

Country Status (1)

Country Link
CN (1) CN114408747A (en)

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