CN103950849A - Chassis structure of crawling crane - Google Patents
Chassis structure of crawling crane Download PDFInfo
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- CN103950849A CN103950849A CN201310630322.XA CN201310630322A CN103950849A CN 103950849 A CN103950849 A CN 103950849A CN 201310630322 A CN201310630322 A CN 201310630322A CN 103950849 A CN103950849 A CN 103950849A
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- chassis
- turntable
- valve
- electromagnetic valve
- pump housing
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Abstract
The invention discloses a chassis structure of a crawling crane. The chassis structure comprises a chassis and a turntable structure; the turntable is arranged on the chassis; the chassis and the turntable are connected by three supporting mechanisms; the three supporting mechanisms comprise three hydraulic cylinder systems; the upper and lower ends of the hydraulic cylinder are connected with the turntable and the chassis through lifting lugs with bearings; the bearing in the lifting lug is rod end joint bearing, which has rotational degree of freedom of 5-10 DEG C; and limit switches are arranged above the turntable at same height on different positions. The invention can complete the vertical and horizontal adjustment, and such a arrangement can effectively save space, maintain the turntable in a same horizontal plane from beginning to end, and prevent center-of-gravity shift caused by weight suspend in midair, moment offset due to center-of-gravity shift together with the weight of the crane cantilever, and the rollover of the crane.
Description
Technical field
The present invention relates to a kind of construction machinery and equipment, particularly a kind of chassis structure of crawler 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 chassis structure of crawler crane.
In order to achieve the above object, the invention provides following technical scheme: a kind of chassis structure of crawler crane, comprise chassis and turntable structure, described turntable is arranged on described chassis, between described chassis and described turntable, by three supporting devices, be connected, three described supporting devices comprise three hydraulic ram systems, three summits of three hydraulic actuating cylinders of three described hydraulic ram systems become an equilateral triangle shape, three described hydraulic ram systems are controlled by PLC controller, 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, 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, the upper and lower side of described hydraulic actuating cylinder all adopts the hanger with bearing to be connected with turntable and chassis, bearing in hanger is spherical plain bearing rod end, described spherical plain bearing rod end has the rotary freedom of 5-10 °.
As a modification of the present invention, on turntable, be provided with angular transducer, described angular transducer is all connected with described PLC controller.
As a modification of the present invention, 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 are connected successively by conduit under fluid pressure, are provided with the by pass valve for safety device between the described pump housing and check valve; Described electromagnetic valve 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.
The chassis structure of a kind of crawler 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.All adopt the hanger with bearing to be connected with turntable and chassis the upper and lower side of hydraulic actuating cylinder, the bearing in hanger is spherical plain bearing rod end, and described spherical plain bearing rod end has the rotary freedom of 5-10 °.Make having of this device certain " elasticity " make this base apparatus adaptive faculty better.
Diverse location place by the sustained height above turntable arranges a plurality of limit switches, the danger that has prevented rising too high of oil cylinder and caused, simultaneously by the displacement pickup that angular transducer is set and arranges on hydraulic actuating cylinder, 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;
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, 13 dampings.
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.
The chassis structure of a kind of crawler crane as shown in Figure 1, comprise chassis 10 and turntable 5, described turntable 5 is arranged on described chassis 10, between described chassis 10 and described turntable 5, by three supporting devices, be connected, three described supporting devices comprise 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 the by pass valve 3 for safety device between the described pump housing 2 and check valve 4, and described electromagnetic valve is connected with PLC controller 12.
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.
The upper and lower side of hydraulic actuating cylinder 8 all adopts the hanger with bearing to be connected with turntable and chassis, and the bearing in hanger is spherical plain bearing rod end, and described spherical plain bearing rod end has the rotary freedom of 5-10 °.Make having of this device certain " elasticity " make this base apparatus adaptive faculty better.
Between described check valve and electromagnetic valve, be connected with an accumulator 7, accumulator 7 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.
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.
The chassis structure of a kind of crawler 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.All adopt the hanger with bearing to be connected with turntable and chassis the upper and lower side of hydraulic actuating cylinder, the bearing in hanger is spherical plain bearing rod end, and described spherical plain bearing rod end has the rotary freedom of 5-10 °.Make having of this device certain " elasticity " make this base apparatus adaptive faculty better.
Diverse location place by the sustained height above turntable arranges a plurality of limit switches, the danger that has prevented rising too high of oil cylinder and caused, simultaneously by the displacement pickup that angular transducer is set and arranges on hydraulic actuating cylinder, 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 (5)
1. the chassis structure of a crawler crane, comprise chassis and turntable structure, described turntable is arranged on described chassis, it is characterized in that: between described chassis and described turntable, by three supporting devices, be connected, three described supporting devices comprise three hydraulic ram systems, three summits of three hydraulic actuating cylinders of three described hydraulic ram systems become an equilateral triangle shape, three described hydraulic ram systems are controlled by PLC controller, 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, 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, the upper and lower side of described hydraulic actuating cylinder all adopts the hanger with bearing to be connected with turntable and chassis, bearing in hanger is spherical plain bearing rod end, described spherical plain bearing rod end has the rotary freedom of 5-10 °.
2. the chassis structure of a kind of crawler crane according to claim 1, is characterized in that: on turntable, be provided with angular transducer, described angular transducer is all connected with described PLC controller.
3. the chassis structure of a kind of crawler crane according to claim 1, it is characterized in that: 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 are connected successively by conduit under fluid pressure, are provided with the by pass valve for safety device between the described pump housing and check valve; Described electromagnetic valve is connected with PLC controller.
4. the chassis structure of a kind of crawler 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.
5. the chassis structure of a kind of crawler 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 |
|---|---|---|---|
| CN201310630322.XA CN103950849A (en) | 2013-12-02 | 2013-12-02 | Chassis structure of crawling crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310630322.XA CN103950849A (en) | 2013-12-02 | 2013-12-02 | Chassis structure of crawling crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103950849A true CN103950849A (en) | 2014-07-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310630322.XA Pending CN103950849A (en) | 2013-12-02 | 2013-12-02 | Chassis structure of crawling crane |
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| Country | Link |
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| CN (1) | CN103950849A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523584A (en) * | 2016-12-06 | 2017-03-22 | 天津永乐网络科技有限公司 | Electromechanical damping mechanism with fine motion function |
| CN106545528A (en) * | 2016-12-06 | 2017-03-29 | 天津威尔福科技有限公司 | Automatically controlled damping |
| CN113401816A (en) * | 2020-03-17 | 2021-09-17 | 四川宏华石油设备有限公司 | Hoisting device |
| CN113682984A (en) * | 2021-08-31 | 2021-11-23 | 张德宝 | Mountain land balance crane |
-
2013
- 2013-12-02 CN CN201310630322.XA patent/CN103950849A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523584A (en) * | 2016-12-06 | 2017-03-22 | 天津永乐网络科技有限公司 | Electromechanical damping mechanism with fine motion function |
| CN106545528A (en) * | 2016-12-06 | 2017-03-29 | 天津威尔福科技有限公司 | Automatically controlled damping |
| CN106523584B (en) * | 2016-12-06 | 2018-09-11 | 中铁建设集团北京工程有限公司 | Electromechanical damping with fine motion function |
| CN113401816A (en) * | 2020-03-17 | 2021-09-17 | 四川宏华石油设备有限公司 | Hoisting device |
| CN113682984A (en) * | 2021-08-31 | 2021-11-23 | 张德宝 | Mountain land balance crane |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140730 |