CN105502181A - Boom structure, engineering machinery and measuring display meter - Google Patents
Boom structure, engineering machinery and measuring display meter Download PDFInfo
- Publication number
- CN105502181A CN105502181A CN201510957571.9A CN201510957571A CN105502181A CN 105502181 A CN105502181 A CN 105502181A CN 201510957571 A CN201510957571 A CN 201510957571A CN 105502181 A CN105502181 A CN 105502181A
- Authority
- CN
- China
- Prior art keywords
- pivot
- hoisting
- arm structure
- connecting rod
- swing arm
- 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.)
- Granted
Links
Classifications
-
- 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
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/68—Jibs foldable or otherwise adjustable in configuration
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Jib Cranes (AREA)
Abstract
The invention provides a boom structure, an acquisition method for the load moment of the boom structure, engineering machinery and a measuring display meter, wherein the boom structure comprises a base boom, a first swing arm, a first connecting rod, a second connecting rod and a first driving part; the first end of the first swing arm is connected to the base boom by a first pivot; the first end of the first connecting rod is connected to the base boom by a second pivot; the second pivot is located at one side, far away from the first swing arm, of the first pivot; the first end of the second connecting rod is connected to the first swing arm by a third pivot; the third pivot is located at one side, far away from the base boom, of the first pivot; the second end of the second connecting rod is connected together with the first end of the first connecting rod by a fourth pivot; the first driving part comprises a first push rod; and the end part of the first push rod is connected to the fourth pivot. The technical scheme provided by the invention solves the problems of the prior art that change of a lifting arm of force in work of the boom structure is large, and further the load moment is hard to control.
Description
Technical field
The present invention relates to technical field of engineering machinery, in particular to the acquisition methods of the hoisting moment of a kind of hoisting arm structure, hoisting arm structure, construction machinery and equipment and measurement indicator gauge.
Background technology
In prior art, the mode that the crane comprising lorry-mounted crane controls hoisting moment is: adopt linear transducer and angular transducer to measure the length of jib when moving and the change of angle respectively, meanwhile, pressure sensor measures the pressure of amplitude oil cylinder.Calculate actual hoisting moment by controller, then contrast with the rated moment of setting, avoid overload, the hoisting moment recorded or hoisting capacity are shown by read-out.Because the lifting arm of force of amplitude oil cylinder changes greatly, when amplitude oil cylinder pressure is identical, different change angles, it is unequal for being applied to jib hoisting moment, and above-mentioned situation is very unfavorable for hoisting heavy.Therefore constant to ensure the hoisting moment be applied on jib, then will by the delivery pressure of controller time changing oil cylinder, the calculated amount of above-mentioned control process is very large.
Due to the power limit memory headroom of device and limited calculated amount, in prior art, power limit device only to get on calculating at the brachium of regulation and work range, different brachium and different between be control by next stage brachium or less hoisting capacity corresponding to work range.And above-mentioned mode have lost part lifting performance.
In addition, for the elevator machinery that folding arm joint number is more, the device such as linear transducer and angular transducer is inconvenient to install and is directly measured, and constrains the development of more piece folding arm.
Summary of the invention
Main purpose of the present invention is the acquisition methods of the hoisting moment providing a kind of hoisting arm structure, hoisting arm structure, construction machinery and equipment and measurement indicator gauge, change greatly with lifting arm of force when solving hoisting arm structure of the prior art work, and then be difficult to the problem controlling hoisting moment.
To achieve these goals, according to an aspect of the present invention, provide a kind of hoisting arm structure, comprising: basic arm; First swing arm, the first end of the first swing arm is pivotally connected on basic arm by first; First connecting rod, the first end of first connecting rod is pivotally connected on basic arm by second, and the second pivot is positioned at the side away from the first swing arm of the first pivot; Second connecting rod, the first end of second connecting rod is pivotally connected in the first swing arm by the 3rd, and the 3rd pivot is positioned at the side of the first pivot away from basic arm, and the second end of second connecting rod is linked together by the first end of the 4th pivot and first connecting rod; First actuator, the first actuator comprises the first push rod, and the end of the first push rod is connected on the 4th pivot, wherein, the distance L between the first pivot to the second pivot
1, distance L between the first pivot to the 3rd pivot
2, the distance L between the 3rd pivot to the 4th pivot
3and the 4th distance L between pivot to the second pivot
4meet following relation: (L
1+ L
2)
2+ L
3 2=L
4 2.
Further, the distance L between the first pivot to the second pivot
1be less than the distance L between the first pivot to the 3rd pivot
2.
Further, hoisting arm structure also comprises: the second swing arm, and the first end of the second swing arm is pivotally connected on the second end of the first swing arm by the 5th; Third connecting rod, the first end of third connecting rod is pivotally connected in the first swing arm by the 6th, and the 6th pivot is positioned at the side away from the second swing arm of Wushu axle; Double leval jib, the first end of double leval jib is pivotally connected in the second swing arm by the 7th, and the 7th pivot is positioned at the side of Wushu axle away from the first swing arm, and the second end of double leval jib is linked together by the first end of the 8th pivot and third connecting rod; Second actuator, the second actuator comprises the second push rod, and the end of the second push rod is connected on the 8th pivot, wherein, the distance L between Wushu axle to the 6th pivot
5, distance L between Wushu axle to the 7th pivot
6, the distance L between the 7th pivot to the 8th pivot
7and the 8th distance L between pivot to the 6th pivot
8meet following relation: (L
5+ L
6)
2+ L
7 2=L
8 2.
Further, the first actuator is arranged pivotly away from one end of the first push rod.
Further, hoisting arm structure also comprises mount pad, and basic arm is arranged on mount pad, and the first actuator is the first oil cylinder, and the cylinder body bottom of the first oil cylinder is connected on mount pad pivotly.
Further, the second actuator is the second oil cylinder, and the cylinder body bottom of the second oil cylinder is connected in the first swing arm pivotly.
Further, hoisting arm structure also comprises: suspension hook, is arranged on the second end of the second swing arm.
According to a further aspect in the invention, provide a kind of construction machinery and equipment, comprise hoisting arm structure, hoisting arm structure is above-mentioned hoisting arm structure.
Further, it is characterized in that, construction machinery and equipment also comprises turntable, and the basic arm of hoisting arm structure is arranged on turntable.
According to a further aspect in the invention, provide a kind of acquisition methods of hoisting moment of hoisting arm structure, it is characterized in that, hoisting arm structure is above-mentioned hoisting arm structure, and acquisition methods comprises: step S1: the numerical value obtaining the driving pressure of the first actuator of hoisting arm structure; Step S2: the numerical value of the moment that first swing arm of second connecting rod to hoisting arm structure being obtained hoisting arm structure by the numerical value of the driving pressure of the first actuator is applied, wherein, step S2 is obtained by following formula: M=k*S*P*L; Wherein, M is the numerical value of second connecting rod to the moment that the first swing arm applies, k is the ratio that the thrust of the first push rod of hoisting arm structure and second connecting rod are subject to the application force of the first push rod, S is the cross-sectional area of the first push rod of hoisting arm structure, P is the driving pressure of the first actuator, and L is the distance of the first pivot to second connecting rod of hoisting arm structure.
According to a further aspect in the invention, provide a kind of measurement indicator gauge, measure indicator gauge for measuring the hoisting moment of hoisting arm structure, it is characterized in that, hoisting arm structure is above-mentioned hoisting arm structure, indicator gauge comprises measuring cell and the first viewing area, measuring cell is for obtaining the numerical value of the driving pressure of the first actuator of hoisting arm structure, the numerical value of the moment that the first viewing area applies for first swing arm of second connecting rod to hoisting arm structure showing hoisting arm structure, wherein, the numerical value of the driving pressure of the first actuator and the numerical value of second connecting rod to the moment that the first swing arm applies meet following relation: M=k*S*P*L, wherein, M is the numerical value of second connecting rod to the moment that the first swing arm applies, k is the ratio that the thrust of the first push rod of hoisting arm structure and second connecting rod are subject to the application force of the first push rod, S is the cross-sectional area of the first push rod, P is the numerical value of the driving pressure of the first actuator, and L is the distance of the first pivot to second connecting rod of hoisting arm structure.
Further, measure indicator gauge and also comprise the second viewing area, the second viewing area is for showing the numerical value of the driving pressure of the first actuator.
Further, first viewing area comprises the first scale strip, second viewing area second scale strip, first scale strip is provided with multiple first scale value, second scale strip is provided with multiple second scale value, multiple first scale value and multiple second scale value one_to_one corresponding are arranged, and measure indicator gauge and also comprise pointer, pointer is each passed through the first scale strip and the second scale strip.
Apply technical scheme of the present invention, by making the first pivot, the second pivot, distance between the 3rd pivot and the 4th pivot meets relation: (L
1+ L
2)
2+ L
3 2=L
4 2, and then make the first pivot, the second pivot, between the 3rd pivot and the 4th pivot, form special quadrilateral structure.When the first actuator work, first push rod promotes second connecting rod and the first swing arm is swung, in the process of the first swing arm motion, the angle between the line of the first pivot and the 3rd pivot and the line of the 3rd pivot and the 4th pivot changes very little, and close to right angle.Said structure makes when the first swing arm motion, and the 3rd pivot is very little to the distance change of second connecting rod, and the lifting arm of force change of also i.e. the first swing arm is very little and close to constant, all irrelevant with the change angle of hoisting arm structure, amplitude and brachium.Therefore, when hoisting arm structure works, as long as the delivery pressure controlling the first actuator can control hoisting moment, enormously simplify the control operation of hoisting moment.Therefore the lifting arm of force that technical scheme of the present invention solves when hoisting arm structure of the prior art works changes greatly, and then is difficult to the problem controlling hoisting moment.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment according to hoisting arm structure of the present invention;
Fig. 2 shows the path of motion schematic diagram of hoisting arm structure in Fig. 1; And
Fig. 3 shows the structural representation of the measurement indicator gauge according to the application.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10, basic arm; 11, the first scale value; 12, the second scale value; 20, the first swing arm; 21, the first scale strip; 22, the second scale strip; 23, pointer; 30, first connecting rod; 40, second connecting rod; 50, the first actuator; 51, the first push rod; 60, the second swing arm; 70, third connecting rod; 80, double leval jib; 90, the second actuator; 91, the second push rod; 100, the first pivot; 200, the second pivot; 300, the 3rd pivot; 400, the 4th pivot; 500, Wushu axle; 600, the 6th pivot; 700, the 7th pivot; 800, the 8th pivot; 900, suspension hook.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the hoisting arm structure of the present embodiment comprises basic arm 10, first swing arm 20, first connecting rod 30, second connecting rod 40 and the first actuator 50.Wherein, the first end of the first swing arm 20 is connected on basic arm 10 by the first pivot 100.The first end of first connecting rod 30 is connected on basic arm 10 by the second pivot 200, and the second pivot 200 is positioned at the side away from the first swing arm 20 of the first pivot 100.The first end of second connecting rod 40 is connected in the first swing arm 20 by the 3rd pivot 300,3rd pivot 300 is positioned at the side of the first pivot 100 away from basic arm 10, and the second end of second connecting rod 40 is linked together with the first end of first connecting rod 30 by the 4th pivot 400.The end that first actuator 50 comprises the first push rod 51, first push rod 51 is connected on the 4th pivot 400, wherein, and the distance L between the first pivot 100 to the second pivot 200
1, distance L between the first pivot 100 to the 3rd pivot 300
2, the distance L between the 3rd pivot 300 to the 4th pivot 400
3and the 4th distance L between pivot 400 to the second pivot 200
4meet following relation: (L
1+ L
2)
2+ L
3 2=L
4 2.
The technical scheme of application the present embodiment, by making the first pivot 100, second pivot 200, distance between the 3rd pivot 300 and the 4th pivot 400 meets relation: (L
1+ L
2)
2+ L
3 2=L
4 2, and then make the first pivot 100, second pivot 200, between the 3rd pivot 300 and the 4th pivot 400, form special quadrilateral structure.When the first actuator 50 works, first push rod 51 promotes second connecting rod 40 and the first swing arm 20 is swung, in the process that the first swing arm 20 is moved, angle between the line of the first pivot 100 and the 3rd pivot 300 and the line of the 3rd pivot 300 and the 4th pivot 400 changes very little, and close to right angle.Said structure makes when the first swing arm 20 is moved, and the change of the distance of the 3rd pivot 300 to second connecting rod 40 is very little, and the lifting arm of force change of also i.e. the first swing arm 20 is very little and close to constant, all irrelevant with the change angle of hoisting arm structure, amplitude and brachium.Therefore, when hoisting arm structure works, as long as the delivery pressure controlling the first actuator 50 can control hoisting moment, enormously simplify the control operation of hoisting moment.Therefore the lifting arm of force that the technical scheme of the present embodiment solves when hoisting arm structure of the prior art works changes greatly, and then is difficult to the problem controlling hoisting moment.
Make the path of motion of hoisting arm structure more clear in order to simplified structure, the hoisting arm structure in Fig. 1 is reduced to the structural scheme of mechanism in Fig. 2 by applicant.In fig. 2, B point is the first pivot 100, A point position second pivot 200, D point position the 3rd pivot 300, C point position the 4th pivot 400.Wherein, A, B, C and D tetra-are connected to each other formation quadrilateral structure, and meanwhile, the length relation of the four edges of quadrangle ABCD meets:
(AB+BD)
2+CD
2＝AC
2；
Wherein, the movement relation on AB limit, BD limit, CD limit and AC limit is: because the first pivot 100 and the second pivot 200 are all positioned on basic arm 10, therefore AB is just fixed edge.When the first push rod 51 works, BD edge B point and rotates, and AC edge A point and rotates.
As shown in Figure 2, when AB and BD conllinear, circle O1 take B as the center of circle, and BC is radius, and circle O2 take A as the center of circle, and AC is radius.Because four-bar linkage exists relational expression (AB+BD)
2+ CD
2=AC
2so when AB and BD conllinear, CD is perpendicular to BD, applicant through research find, when C point move to C1 point, D point move to D1 point time, the length variations of BC is very little, this illustrates that triangle BCD remains unchanged substantially in this process, for right-angled triangle (wherein, angle CDA is right angle), also namely the distance of second connecting rod 40 to the first pivot 100 remains unchanged substantially.
In order to verify above-mentioned conclusion further, applicant has carried out actual measurement to hoisting arm structure, particularly, and being specifically of a size of of ABCD of quadrangle in figure:
AB＝168.8；BD＝479；DC＝210；AC＝681
It should be noted that, owing to there is trueness error in machine manufacture, in practical structures, the first pivot 100, second pivot 200, distance relation between the 3rd pivot 300 and the 4th pivot 400 can not meet (AB+BD) completely
2+ CD
2=AC
2.But above-mentioned trueness error actual deviation value after calculating is negligible.
When the first actuator 50 works, the relation of the pendulum angle of the first swing arm 20 and the distance of second connecting rod 40 to the first pivot 100 is as following table:
Table 1
| Elevation angle theta | 28 | 33 | 38 | 43 | 48 | 53 | 58 | 63 | 68 | 73 |
| Distance l | 477.7 | 478.6 | 479 | 479 | 478.8 | 478.6 | 478.4 | 478.3 | 478.3 | 478.4 |
As can be seen from Table 1, when the first swing arm 20 swings, the distance change of second connecting rod 40 to the first pivot 100 is very little, and its difference is negligible for final Calculating Torque during Rotary result.
From the above, by making the first pivot 100, second pivot 200 of hoisting arm structure, the distance between the 3rd pivot 300 and the 4th pivot 400 meets certain relation, when the first swing arm 20 is moved, the distance change of the 3rd pivot 300 to second connecting rod 40 is very little, also the lifting arm of force change of i.e. the first swing arm 20 is very little and close to constant, all irrelevant with the change angle of hoisting arm structure, amplitude and brachium.As long as therefore stable control can be carried out to hoisting moment by the driving pressure of control first actuator 50, eliminate linear transducer and angular transducer simultaneously, easy for installation.
As shown in Figure 1, in the technical scheme of the present embodiment, the end of the first swing arm 20 is also connected with the second swing arm 60.Particularly, hoisting arm structure also comprises the second swing arm 60, third connecting rod 70, double leval jib 80 and the second actuator 90.Wherein, the first end of the second swing arm 60 is connected on the second end of the first swing arm 20 by Wushu axle 500.The first end of third connecting rod 70 is connected in the first swing arm 20 by the 6th pivot 600, and the 6th pivot 600 is positioned at the side away from the second swing arm 60 of Wushu axle 500.The first end of double leval jib 80 is connected in the second swing arm 60 by the 7th pivot 700,7th pivot 700 is positioned at the side of Wushu axle 500 away from the first swing arm 20, and the second end of double leval jib 80 is linked together with the first end of third connecting rod 70 by the 8th pivot 800.The end that second actuator 90 comprises the second push rod 91, second push rod 91 is connected on the 8th pivot 800, wherein, and the distance L between Wushu axle 500 to the 6th pivot 600
5, distance L between Wushu axle 500 to the 7th pivot 700
6, the distance L between the 7th pivot 700 to the 8th pivot 800
7and the 8th distance L between pivot 800 to the 6th pivot 600
8meet following relation: (L
5+ L
6)
2+ L
7 2=L
8 2.
Above-mentioned second swing arm 60, third connecting rod 70, double leval jib 80 are consistent with basic arm 10, first swing arm 20, first connecting rod 30, second connecting rod 40 and the first actuator 50 with length variations feature with the motion process of the second actuator 90, with reference to quadrangle ABCD in figure 2, do not repeat them here.
As shown in Figure 1, in the technical scheme of the present embodiment, the first actuator 50 is arranged pivotly away from one end of the first push rod 51.Particularly, hoisting arm structure also comprises mount pad, and basic arm 10 is arranged on mount pad, and the first actuator 50 is the first oil cylinder, and the cylinder body bottom of the first oil cylinder is connected on mount pad pivotly.
As shown in Figure 1, in the technical scheme of the present embodiment, the second actuator 90 is the second oil cylinder, and the cylinder body bottom of the second oil cylinder is connected in the first swing arm 20 pivotly.
As shown in Figure 1, in the technical scheme of the present embodiment, hoisting arm structure also comprises suspension hook 900, and suspension hook 900 is arranged on the second end of the second swing arm 60.
Present invention also provides a kind of construction machinery and equipment, the embodiment according to the construction machinery and equipment of the application comprises hoisting arm structure, and hoisting arm structure is above-mentioned hoisting arm structure.Wherein, construction machinery and equipment also comprises turntable, and the basic arm 10 of hoisting arm structure is arranged on turntable.
Present invention also provides a kind of acquisition methods of hoisting moment of hoisting arm structure, wherein, hoisting arm structure is above-mentioned hoisting arm structure, and acquisition methods comprises:
Step S1: the numerical value obtaining the driving pressure of the first actuator 50 of hoisting arm structure;
Step S2: the numerical value of the moment that the first swing arm 20 being obtained second connecting rod 40 pairs of hoisting arm structures of hoisting arm structure by the numerical value of the driving pressure of the first actuator 50 is applied, wherein, step S2 is obtained by following formula:
M＝k*S*P*L；
Above-mentioned formula is the computing formula of moment, wherein, M is the numerical value of second connecting rod 40 to the moment that the first swing arm 20 applies, k is the ratio that the thrust of the first push rod 51 of hoisting arm structure and second connecting rod 40 are subject to the application force of the first push rod 51, S is the cross-sectional area of the first push rod 51 of hoisting arm structure, P is the driving pressure of the first actuator 50, and L is the distance of the first pivot 100 to second connecting rod 40 of hoisting arm structure.
It should be noted that, the numerical value of second connecting rod 40 to the moment that the first swing arm 20 applies is the hoisting moment numerical value of hoisting arm structure.
Find after contriver's experiment, the ratio k that the thrust of the first push rod 51 and second connecting rod 40 are subject to the application force of the first push rod 51 is definite value substantially in the motion process of the first swing arm 20, observed data table specific as follows:
Table 2
| Elevation angle theta | 28 | 33 | 38 | 43 | 48 | 53 | 58 | 63 | 68 | 73 |
| Ratio k | 1.04 | 1.04 | 1.04 | 1.03 | 1.03 | 1.02 | 1.01 | 1 | 0.99 | 0.98 |
Can be seen by table 2, when the first swing arm 20 is in the different elevation angle, k value remains unchanged substantially, and therefore in above-mentioned formula, k can get definite value.Its value can obtain according to different mathematic calculation.
According to the acquisition methods of the hoisting moment of above-mentioned hoisting arm structure, present invention also provides a kind of measurement indicator gauge, measure indicator gauge for measuring the hoisting moment of hoisting arm structure, hoisting arm structure is above-mentioned hoisting arm structure.Wherein, indicator gauge comprises measuring cell and the first viewing area, measuring cell is for obtaining the numerical value of the driving pressure of the first actuator 50 of hoisting arm structure, the numerical value of the moment that the first viewing area applies for the first swing arm 20 showing second connecting rod 40 pairs of hoisting arm structures of hoisting arm structure, wherein, the numerical value of the driving pressure of the first actuator and the numerical value of second connecting rod 40 to the moment that the first swing arm 20 applies meet following relation:
M＝k*S*P*L；
M is the numerical value of second connecting rod 40 to the moment that the first swing arm 20 applies, k is the ratio that the thrust of the first push rod 51 of hoisting arm structure and second connecting rod 40 are subject to the application force of the first push rod 51, S is the cross-sectional area of the first push rod 51, P is the numerical value of the driving pressure of the first actuator 50, and L is the distance of the first pivot 100 to second connecting rod 40 of hoisting arm structure.
In the technical scheme of the present embodiment, measure indicator gauge and also comprise the second viewing area, the second viewing area is for showing the numerical value of the driving pressure of the first actuator 50.
As shown in Figure 3, in the technical scheme of the present embodiment, first viewing area comprises the first scale strip 21, second viewing area second scale strip 22, first scale strip 21 is provided with on multiple first scale value 11, second scale strip 22 and is provided with multiple second scale value 12, multiple first scale value 11 and multiple second scale value 12 one_to_one corresponding are arranged, measure indicator gauge and also comprise pointer 23, pointer 23 is each passed through the first scale strip 21 and the second scale strip 22.Above-mentioned measurement indicator gauge can show pressure force and moment intuitively and can show, and can understand the size of hoisting moment preferably
It should be noted that, the measurement indicator gauge in the present embodiment is not limited to above-mentioned pointer indicator gauge, also can be other indicator gauge form.Such as measuring indicator gauge is liquid crystal display watch, and wherein, the first viewing area and the second viewing area can show for liquid crystal display, also namely show pressure and hoisting moment respectively by liquid crystal display.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a hoisting arm structure, is characterized in that, comprising:
Basic arm (10);
First swing arm (20), the first end of described first swing arm (20) is connected on described basic arm (10) by the first pivot (100);
First connecting rod (30), the first end of described first connecting rod (30) is connected on described basic arm (10) by the second pivot (200), and described second pivot (200) is positioned at the side away from described first swing arm (20) of described first pivot (100);
Second connecting rod (40), the first end of described second connecting rod (40) is connected on described first swing arm (20) by the 3rd pivot (300), described 3rd pivot (300) is positioned at the side of described first pivot (100) away from described basic arm (10), and the second end of described second connecting rod (40) is linked together by the first end of the 4th pivot (400) with described first connecting rod (30);
First actuator (50), described first actuator (50) comprises the first push rod (51), and the end of described first push rod (51) is connected on described 4th pivot (400),
Wherein, the distance L between described first pivot (100) to described second pivot (200)
1, described first pivot (100) is to the distance L between described 3rd pivot (300)
2, the distance L between described 3rd pivot (300) to described 4th pivot (400)
3and the distance L between described 4th pivot (400) to described second pivot (200)
4meet following relation:
(L
1+L
2)
2+L
3 2＝L
4 2。
2. hoisting arm structure according to claim 1, is characterized in that, the distance L between described first pivot (100) to described second pivot (200)
1be less than the distance L between described first pivot (100) to described 3rd pivot (300)
2.
3. hoisting arm structure according to claim 1, is characterized in that, described hoisting arm structure also comprises:
Second swing arm (60), the first end of described second swing arm (60) is connected on the second end of described first swing arm (20) by Wushu axle (500);
Third connecting rod (70), the first end of described third connecting rod (70) is connected on described first swing arm (20) by the 6th pivot (600), and described 6th pivot (600) is positioned at the side away from described second swing arm (60) of described Wushu axle (500);
Double leval jib (80), the first end of described double leval jib (80) is connected on described second swing arm (60) by the 7th pivot (700), described 7th pivot (700) is positioned at the side of described Wushu axle (500) away from described first swing arm (20), and the second end of described double leval jib (80) is linked together by the first end of the 8th pivot (800) with described third connecting rod (70);
Second actuator (90), described second actuator (90) comprises the second push rod (91), and the end of described second push rod (91) is connected on described 8th pivot (800),
Wherein, the distance L between described Wushu axle (500) to described 6th pivot (600)
5, described Wushu axle (500) is to the distance L between described 7th pivot (700)
6, the distance L between described 7th pivot (700) to described 8th pivot (800)
7and the distance L between described 8th pivot (800) to described 6th pivot (600)
8meet following relation:
(L
5+L
6)
2+L
7 2＝L
8 2。
4. hoisting arm structure according to claim 1, is characterized in that, described first actuator (50) is arranged pivotly away from one end of described first push rod (51).
5. hoisting arm structure according to claim 4, it is characterized in that, described hoisting arm structure also comprises mount pad, described basic arm (10) is arranged on described mount pad, described first actuator (50) is the first oil cylinder, and the cylinder body bottom of described first oil cylinder is connected on described mount pad pivotly.
6. hoisting arm structure according to claim 3, is characterized in that, described second actuator (90) is the second oil cylinder, and the cylinder body bottom of described second oil cylinder is connected on described first swing arm (20) pivotly.
7. hoisting arm structure according to claim 3, is characterized in that, described hoisting arm structure also comprises:
Suspension hook (900), is arranged on the second end of described second swing arm (60).
8. a construction machinery and equipment, comprises hoisting arm structure, it is characterized in that, the hoisting arm structure of described hoisting arm structure according to any one of claim 1 to 7.
9. construction machinery and equipment according to claim 8, is characterized in that, described construction machinery and equipment also comprises turntable, and the basic arm (10) of described hoisting arm structure is arranged on described turntable.
10. an acquisition methods for the hoisting moment of hoisting arm structure, is characterized in that, the hoisting arm structure of described hoisting arm structure according to any one of claim 1 to 7, and described acquisition methods comprises:
Step S1: the numerical value obtaining the driving pressure of first actuator (50) of described hoisting arm structure;
Step S2: the numerical value of the moment that first swing arm (20) of second connecting rod (40) to described hoisting arm structure being obtained described hoisting arm structure by the numerical value of the driving pressure of described first actuator (50) is applied,
Wherein, described step S2 is obtained by following formula:
M＝k*S*P*L；
Wherein, described M is the numerical value of described second connecting rod (40) to the moment that described first swing arm (20) applies, described k is the ratio that the thrust of first push rod (51) of described hoisting arm structure and described second connecting rod (40) are subject to the application force of described first push rod (51), described S is the cross-sectional area of first push rod (51) of described hoisting arm structure, described P is the driving pressure of described first actuator (50), and described L is the distance of the first pivot (100) to described second connecting rod (40) of described hoisting arm structure.
Measure indicator gauge for 11. 1 kinds, described measurement indicator gauge is for measuring the hoisting moment of hoisting arm structure, it is characterized in that, the hoisting arm structure of described hoisting arm structure according to any one of claim 1 to 7, described indicator gauge comprises measuring cell and the first viewing area, measuring cell is for obtaining the numerical value of the driving pressure of first actuator (50) of described hoisting arm structure, the numerical value of the moment that described first viewing area applies for first swing arm (20) of second connecting rod (40) to described hoisting arm structure showing described hoisting arm structure, wherein, the numerical value of the driving pressure of described first actuator (50) and the numerical value of described second connecting rod (40) to the moment that described first swing arm (20) applies meet following relation:
M＝k*S*P*L；
Wherein, described M is the numerical value of described second connecting rod (40) to the moment that described first swing arm (20) applies, described k is the ratio that the thrust of first push rod (51) of described hoisting arm structure and described second connecting rod (40) are subject to the application force of described first push rod (51), described S is the cross-sectional area of described first push rod (51), described P is the numerical value of the driving pressure of described first actuator (50), and described L is the distance of the first pivot (100) to described second connecting rod (40) of described hoisting arm structure.
12. measurement indicator gauges according to claim 11, is characterized in that, described measurement indicator gauge also comprises the second viewing area, and described second viewing area is for showing the numerical value of the driving pressure of described first actuator (50).
13. measurement indicator gauges according to claim 12, it is characterized in that, described first viewing area comprises the first scale strip (21), described second viewing area second scale strip (22), described first scale strip (21) is provided with multiple first scale value (11), described second scale strip (22) is provided with multiple second scale value (12), described multiple first scale value (11) and described multiple second scale value (12) one_to_one corresponding are arranged, described measurement indicator gauge also comprises pointer (23), described pointer (23) is each passed through described first scale strip (21) and described second scale strip (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510957571.9A CN105502181B (en) | 2015-12-18 | 2015-12-18 | Hoisting arm structure, engineering machinery and measurement display table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510957571.9A CN105502181B (en) | 2015-12-18 | 2015-12-18 | Hoisting arm structure, engineering machinery and measurement display table |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105502181A true CN105502181A (en) | 2016-04-20 |
| CN105502181B CN105502181B (en) | 2017-03-01 |
Family
ID=55710571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510957571.9A Active CN105502181B (en) | 2015-12-18 | 2015-12-18 | Hoisting arm structure, engineering machinery and measurement display table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105502181B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110697586A (en) * | 2019-10-15 | 2020-01-17 | 湖北江威智能汽车股份有限公司 | Low-altitude crane |
| CN111943047A (en) * | 2020-07-30 | 2020-11-17 | 湖南双达机电有限责任公司 | Overload prevention control method and system for hoisting machinery and hoisting machinery |
| CN112405603A (en) * | 2019-08-20 | 2021-02-26 | 沈阳新松机器人自动化股份有限公司 | Heavy-load large-inertia transfer robot |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0367894A (en) * | 1989-07-31 | 1991-03-22 | Shimadzu Corp | Crane |
| JP2001039669A (en) * | 1999-07-29 | 2001-02-13 | Sumitomo Constr Mach Co Ltd | Load detection device for crane |
| CN201309800Y (en) * | 2008-06-17 | 2009-09-16 | 湛江市科海科技有限公司 | Novel intelligent crane weighing torque meter |
| CN101780926A (en) * | 2010-01-07 | 2010-07-21 | 上海三一科技有限公司 | Crawler crane moment limiting system |
| CN102502406A (en) * | 2011-10-31 | 2012-06-20 | 中联重科股份有限公司 | Crane boom working parameter measuring method, controller, apparatus, and crane |
| CN103723632A (en) * | 2013-12-13 | 2014-04-16 | 中联重科股份有限公司 | Crane gyration control method, crane gyration control system and crane |
-
2015
- 2015-12-18 CN CN201510957571.9A patent/CN105502181B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0367894A (en) * | 1989-07-31 | 1991-03-22 | Shimadzu Corp | Crane |
| JP2001039669A (en) * | 1999-07-29 | 2001-02-13 | Sumitomo Constr Mach Co Ltd | Load detection device for crane |
| CN201309800Y (en) * | 2008-06-17 | 2009-09-16 | 湛江市科海科技有限公司 | Novel intelligent crane weighing torque meter |
| CN101780926A (en) * | 2010-01-07 | 2010-07-21 | 上海三一科技有限公司 | Crawler crane moment limiting system |
| CN102502406A (en) * | 2011-10-31 | 2012-06-20 | 中联重科股份有限公司 | Crane boom working parameter measuring method, controller, apparatus, and crane |
| CN103723632A (en) * | 2013-12-13 | 2014-04-16 | 中联重科股份有限公司 | Crane gyration control method, crane gyration control system and crane |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112405603A (en) * | 2019-08-20 | 2021-02-26 | 沈阳新松机器人自动化股份有限公司 | Heavy-load large-inertia transfer robot |
| CN112405603B (en) * | 2019-08-20 | 2021-10-22 | 沈阳新松机器人自动化股份有限公司 | Heavy-load large-inertia transfer robot |
| CN110697586A (en) * | 2019-10-15 | 2020-01-17 | 湖北江威智能汽车股份有限公司 | Low-altitude crane |
| CN111943047A (en) * | 2020-07-30 | 2020-11-17 | 湖南双达机电有限责任公司 | Overload prevention control method and system for hoisting machinery and hoisting machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105502181B (en) | 2017-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206593851U (en) | RV decelerator dynamic and static state performance test systems | |
| CN105502181A (en) | Boom structure, engineering machinery and measuring display meter | |
| CN110498341B (en) | Safety control method and system for hoisting equipment | |
| CN204022340U (en) | A kind of wide-angle hoisting crane | |
| CN103674472A (en) | Automatic three-level weight loading device and loading method for wind tunnel balance calibration | |
| CN204128889U (en) | A kind of beam bending experiment loading unit | |
| CN105588498B (en) | A kind of RV retarders static state return difference test device | |
| CN103196694B (en) | Composite material truss torsion experimental device and method | |
| CN105352643B (en) | One kind transmission shaft torque scaling method | |
| CN110023231B (en) | Method for determining a load and control device for a hydraulic lifting device for carrying out said method | |
| CN105865825A (en) | Mechanical arm test platform | |
| CN110567639A (en) | Multi-axis force sensor calibration method and calibration device | |
| CN103253594B (en) | Method and device for adjusting length of multi-winding steel wire rope of crawler crane | |
| CN105241371A (en) | Resistance strain gauge | |
| CN205449494U (en) | RV reduction gear transmission return difference testing arrangement | |
| CN103411584A (en) | Method and device for inspection measurement of fan-shaped section base of continuous casting machine | |
| CN113607402B (en) | Plunger pump plunger pair oil film testing device, method and system | |
| CN101539400A (en) | Method for calibrating vertical survey system of photo-etching machine stage | |
| CN205898112U (en) | Cantilever crane angle detecting means | |
| CN102910533A (en) | Spatial angle measuring method based on crane | |
| CN111055167B (en) | Indexing two-link type ball rod instrument and method for detecting machine tool precision by using same | |
| CN110759281B (en) | Weighing method of telescopic arm structure, equipment and storage medium thereof | |
| CN208847594U (en) | A kind of very heavy very useful three axis the static and dynamic experiment machine | |
| CN107942668A (en) | A kind of hanging basket position of platform error estimation based on inverse distance-weighting | |
| CN104180744B (en) | Distance measuring apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |