CN103612991A - Heavy-load leveling crane - Google Patents
Heavy-load leveling crane Download PDFInfo
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- CN103612991A CN103612991A CN201310630448.7A CN201310630448A CN103612991A CN 103612991 A CN103612991 A CN 103612991A CN 201310630448 A CN201310630448 A CN 201310630448A CN 103612991 A CN103612991 A CN 103612991A
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- crane
- valve
- hoisting crane
- turntable
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Abstract
The invention discloses a heavy-load leveling crane. The heavy-load leveling crane comprises a power device, a working mechanism, a movable arm, a rotary table and a base plate, wherein the rotary table is arranged on the base plate; the base plate is connected with the rotary table by a supporting mechanism; the supporting mechanism comprises three hydraulic oil cylinder systems; an equilateral triangle shape is formed by three vertexes of the three hydraulic oil cylinder systems. According to the heavy-load leveling crane, the supporting mechanism comprising the three hydraulic oil cylinder systems is arranged and the three hydraulic oil cylinder systems form the equilateral triangle shape to finish crosswise and lengthwise adjustment; with the adoption of the structure, the space can be saved effectively and the rotary table is kept on one horizontal plane all the time, center-of-gravity shift caused by suspending a heavy object is prevented, and the crane is prevented from being turned on one side due to the weight of a cantilever and the like of the crane and moment shift caused by the center-of-gravity shift; the weight of the base plate is lightened effectively; meanwhile, the bearing weight of the crane can be increased and the performance of the crane is improved.
Description
Technical field
The present invention relates to a kind of construction machinery and equipment, particularly a kind of heavily loaded leveling hoisting crane.
Background technology
Crawler crane is the self-propelled crane that a kind of high-building construction is used, and it is a kind of track-type swing arm rotary crane that utilizes.Track area is large, and crossing ability is good, and strong adaptability can be with and carry walking, is applicable to the lifting operation of building ground.Can cut the earth, ram the several work such as soil, piling.
Crawler crane is comprised of engine installation, operating mechanism and swing arm, turntable, chassis etc., because hoisting crane is used for lifting weight, add the unsettled centre-of gravity shift that causes of weight, add the weight of the cantilever etc. of hoisting crane, the skew of the moment causing with its centre-of gravity shift, easily cause the rollover of hoisting crane, therefore must add the weight of large chassis to guarantee the safety of hoisting crane, but excessive weight can cause the load of crane travelling gear, also can make the damage of hoisting crane road pavement larger, also can have larger impact to the operating environment of hoisting crane simultaneously simultaneously.As the weight that alleviates chassis can cause again the charge capacity of the lifting of hoisting crane to reduce.
Summary of the invention
For addressing the above problem, the invention discloses a kind of heavily loaded leveling hoisting crane.
In order to achieve the above object, the invention provides following technical scheme: a kind of heavily loaded leveling hoisting crane, comprise engine installation, operating mechanism, swing arm, turntable and chassis, described turntable is arranged on described chassis, between described chassis and described turntable, by supporting device, be connected, described supporting device comprises three hydraulic ram systems, three described hydraulic ram systems, described hydraulic ram system comprises hydraulic actuating cylinder, motor, the pump housing, check valve, accumulator, electromagnetic valve and by pass valve, described motor, the pump housing, check valve, electromagnetic valve is connected successively by conduit under fluid pressure, three summits of three described hydraulic actuating cylinders become an equilateral triangle shape, between the described pump housing and check valve, be provided with the by pass valve for safety device, described electromagnetic valve is connected with PLC controller.
As a modification of the present invention, on described turntable, be provided with angular transducer, described angular transducer is connected with PLC controller.
As a modification of the present invention, on described hydraulic actuating cylinder, be provided with displacement pickup, described displacement pickup is connected with PLC controller.
As a modification of the present invention, described electromagnetic valve is electro-hydraulic proportional valve.
A kind of heavily loaded leveling hoisting crane provided by the invention, by the supporting device of three hydraulic ram systems is set, and three supporting devices become equilateral triangle shape, can complete laterally and adjust longitudinally, and such setting can be saved space effectively, turntable is remained on a horizontal surface, prevented because the unsettled centre-of gravity shift causing of weight, and the weight that adds the cantilever etc. of hoisting crane, the skew of the moment causing with its centre-of gravity shift, cause the rollover of hoisting crane, by this design, can effectively alleviate the weight on chassis, also can increase the load capacity of crawler crane simultaneously, improved the performance of crawler crane.Simultaneously by the displacement pickup that angular transducer is set and arranges on hydraulic actuating cylinder, to add and PLC controller is set can realizes automatically adjustment function, and can accurately adjust the displacement of the piston rod of hydraulic actuating cylinder, its accuracy rate is more increased.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of supporting construction of the present invention;
Reference numerals list:
1 motor, 2 pump housings, 3 by pass valves, 4 check valves, 5 turntables, 6 electromagnetic valves, 7 accumulators, 8 hydraulic actuating cylinders, 9 angular transducers, 10 chassis, 11 displacement pickups, 12PLC controller.
The specific embodiment
Below with reference to specific embodiment, technical scheme provided by the invention is elaborated, should understands the following specific embodiment and only for the present invention is described, is not used in and limits the scope of the invention.
A heavily loaded leveling hoisting crane, comprises engine installation, operating mechanism, swing arm, turntable and chassis, and these are all that hoisting crane of the prior art is the same.The chassis of its bottom and the connection structure of turntable are core of the present invention, as shown in Figure 1, turntable 5 is arranged on described chassis 10, between described chassis 10 and described turntable 5, by supporting device, be connected, described supporting device comprises three hydraulic ram systems, described hydraulic ram system comprises hydraulic actuating cylinder 8, motor 1, the pump housing 2, check valve 4, accumulator 7, electromagnetic valve 6 and by pass valve 3, described motor 1, the pump housing 3, check valve 4, electromagnetic valve 6 is connected successively by conduit under fluid pressure, accumulator 7 is arranged between described check valve 4 and electromagnetic valve 6.
Described three hydraulic actuating cylinders 8 become an equilateral triangle shape with three summits of described turntable 5, are provided with as shown in Figure 2 the by pass valve for safety device between the described pump housing 2 and check valve; Described electromagnetic valve is connected with PLC controller.
Described hydraulic ram system comprises hydraulic actuating cylinder 8, motor 1, the pump housing 2, check valve 4, electromagnetic valve 6 and by pass valve 3, described motor 1, the pump housing 3, check valve 4, electromagnetic valve 6 are connected successively by conduit under fluid pressure, are provided with the by pass valve 3 for safety device between the described pump housing 2 and check valve 4; Described electromagnetic valve 6 is connected with PLC controller.
Further, be provided with angular transducer 9 on described turntable 5, described angular transducer 9 is connected with PLC controller 13.By angular transducer 9, can measure the angle in each orientation of turntable 5, then control by PLC controller 12 hydraulic actuating cylinder 8 adjustable heights that electromagnetic valve 6 is controlled assistant supporting mechanism, guarantee the accuracy of system and the stability of mechanism.
Further, described electromagnetic valve 6 is electro-hydraulic proportional valve, by electro-hydraulic proportional valve is set, can more accurately control the distance of rising or the decline of hydraulic actuating cylinder 8, has improved further the accuracy rate of system.
Further, be connected with an accumulator 14 between described check valve and electromagnetic valve, accumulator 14 can store the unnecessary pressure oil of Hydraulic Pump output.When system needs, by energy storage, discharged.Can reduce the rated flow of Hydraulic Pump like this, thereby reduce power of motor consumption, reduce hydraulic efficiency pressure system temperature rise, because the long-time of hoisting crane worked under severe working environment, impact during by the pressure jump of energy device energy absorption system, as Hydraulic Pump starts or stops suddenly, hydraulic valve cuts out suddenly or opens, and hydraulic actuating cylinder moves suddenly or stops; Also the caused pressure pulsation of flow pulsation in the time of absorbing hydraulic pump works, the service life of having improved system.
A kind of heavily loaded leveling hoisting crane provided by the invention, by the supporting device of three hydraulic ram systems is set, and three supporting devices become equilateral triangle shape, can complete laterally and adjust longitudinally, and such setting can be saved space effectively, turntable is remained on a horizontal surface, prevented because the unsettled centre-of gravity shift causing of weight, and the weight that adds the cantilever etc. of hoisting crane, the skew of the moment causing with its centre-of gravity shift, cause the rollover of hoisting crane, by this design, can effectively alleviate the weight on chassis, also can increase the load capacity of crawler crane simultaneously, improved the performance of crawler crane.Simultaneously by the displacement pickup that angular transducer is set and arranges on hydraulic actuating cylinder, to add and PLC controller is set can realizes automatically adjustment function, and can accurately adjust the displacement of the piston rod of hydraulic actuating cylinder, its accuracy rate is more increased.
The disclosed technological means of the present invention program is not limited only to the disclosed technological means of above-mentioned embodiment, also comprises the technical scheme being comprised of above technical characterictic combination in any.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (4)
1. a heavily loaded leveling hoisting crane, comprise engine installation, operating mechanism, swing arm, turntable and chassis, it is characterized in that: described turntable is arranged on described chassis, between described chassis and described turntable, by supporting device and damping, be connected, described supporting device comprises three hydraulic ram systems, three described hydraulic ram systems, described hydraulic ram system comprises hydraulic actuating cylinder, motor, the pump housing, check valve, accumulator, electromagnetic valve and by pass valve, described motor, the pump housing, check valve, electromagnetic valve is connected successively by conduit under fluid pressure, three summits of three described hydraulic actuating cylinders become an equilateral triangle shape, between the described pump housing and check valve, be provided with the by pass valve for safety device, described electromagnetic valve is connected with PLC controller.
2. a kind of heavily loaded leveling hoisting crane according to claim 1, is characterized in that: on described turntable, be provided with angular transducer, described angular transducer is connected with PLC controller.
3. a kind of heavily loaded leveling hoisting crane according to claim 1, is characterized in that: on described hydraulic actuating cylinder, be provided with displacement pickup, described displacement pickup is connected with PLC controller.
4. a kind of heavily loaded leveling hoisting crane according to claim 1, is characterized in that: described electromagnetic valve is electro-hydraulic proportional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310630448.7A CN103612991A (en) | 2013-12-02 | 2013-12-02 | Heavy-load leveling crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310630448.7A CN103612991A (en) | 2013-12-02 | 2013-12-02 | Heavy-load leveling crane |
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| Publication Number | Publication Date |
|---|---|
| CN103612991A true CN103612991A (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310630448.7A Pending CN103612991A (en) | 2013-12-02 | 2013-12-02 | Heavy-load leveling crane |
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| CN (1) | CN103612991A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545836A (en) * | 2016-01-28 | 2016-05-04 | 河南骏通车辆有限公司 | Subframe leveling hydraulic control system for leveling of dumper |
| CN108358079A (en) * | 2018-04-24 | 2018-08-03 | 徐工集团工程机械股份有限公司 | A kind of Multifunctional working platform |
| CN113682984A (en) * | 2021-08-31 | 2021-11-23 | 张德宝 | Mountain land balance crane |
-
2013
- 2013-12-02 CN CN201310630448.7A patent/CN103612991A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545836A (en) * | 2016-01-28 | 2016-05-04 | 河南骏通车辆有限公司 | Subframe leveling hydraulic control system for leveling of dumper |
| CN108358079A (en) * | 2018-04-24 | 2018-08-03 | 徐工集团工程机械股份有限公司 | A kind of Multifunctional working platform |
| CN113682984A (en) * | 2021-08-31 | 2021-11-23 | 张德宝 | Mountain land balance crane |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140305 |