CN201228685Y - Hydraulic system of lorry-mounted crane - Google Patents
Hydraulic system of lorry-mounted crane Download PDFInfo
- Publication number
- CN201228685Y CN201228685Y CNU2008200773692U CN200820077369U CN201228685Y CN 201228685 Y CN201228685 Y CN 201228685Y CN U2008200773692 U CNU2008200773692 U CN U2008200773692U CN 200820077369 U CN200820077369 U CN 200820077369U CN 201228685 Y CN201228685 Y CN 201228685Y
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- CN
- China
- Prior art keywords
- crane
- hoist
- lorry
- hydraulic
- hydraulic system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a hydraulic system of a lorry crane belonging to the hydraulic technical field of lorry cranes, which mainly resolves the problem by providing a hydraulic system for a lorry crane, in particular to a hydraulic system with an internal dynamic balance device of a lorry crane for securer and more stable operation. The adopted scheme includes that the crane hydraulic system comprises a crane oil tank, a crane oil pump, an electromagnetic relief valve, a crane variable-amplitude cylinder, a crane hydraulic hoisting assembly and a rotary motor, wherein the crane oil pump is disposed at the most front end of an output pipeline of the crane oil tank, the electromagnetic relief valve is disposed between the output pipeline and a return pipeline of the crane oil tank, the crane variable-amplitude cylinder, the crane hydraulic hoisting assembly and the rotary motor are respectively connected to the output pipeline of the crane oil tank, input ends of the crane variable-amplitude cylinder, the crane hydraulic hoisting assembly and the rotary motor are respectively equipped with an electromagnetic hydraulic reversing valve, and balancing valves are arranged on pipelines between the crane variable-amplitude cylinder-the crane hydraulic hoisting assembly and the electromagnetic hydraulic reversing valves. The utility model can be applied to lorry cranes.
Description
Technical field
The hydraulic system of the utility model lorry-mounted crane belongs to lorry-mounted crane hydraulics field.
Background technique
Lorry-mounted crane is the well accepted product in market, because the difference of structural characteristics, mounting point and the use occasion of product, the technology and the structural requirement of lorry-mounted crane is also varied.Especially some special-purpose vehicles, to the deadweight of lorry-mounted crane require light, functional requirement is powerful and boundary dimension requires for a short time, but dynamic poise device in traditional lorry-mounted crane hydraulic system causes hoist not steady when hoisting heavy.
The model utility content
The utility model overcomes the deficiency that prior art exists, and problem to be solved is: a kind of hydraulic system of lorry-mounted crane is provided, is specially and a kind ofly in the hydraulic system of lorry-mounted crane, is provided with dynamic poise device, and safer when making its work, stable.
In order to address the above problem, the technological scheme that the hydraulic system of the utility model lorry-mounted crane adopts is: the hydraulic system of lorry-mounted crane, wherein crane hydraulic system comprises: the hoist fuel tank, be arranged on foremost hoist pump of hoist fuel tank output pipe, be arranged on the electromagnetic relief valve between hoist fuel tank output pipe and the return line, respectively the crane amplitude variation oil cylinder that links to each other with hoist fuel tank output pipe, hoist hydraulic pressure elevator assembly and rotary motor; Input end at described crane amplitude variation oil cylinder, hoist hydraulic pressure elevator assembly and rotary motor is provided with an electromagnetic hydraulic pressure selector valve separately; On the pipeline between described crane amplitude variation oil cylinder and hoist hydraulic pressure elevator assembly and the electromagnetic hydraulic pressure selector valve, also be provided with equilibrium valve.
Owing to also be provided with equilibrium valve on the crane amplitude variation oil cylinder of the hydraulic system of the utility model lorry-mounted crane and the pipeline between hoist hydraulic pressure elevator assembly and the electromagnetic hydraulic pressure selector valve, so just can make this hoist safety and steady when work.
Description of drawings
Be described further below in conjunction with the hydraulic system of accompanying drawing the utility model lorry-mounted crane:
The schematic diagram of the hydraulic system of Fig. 1 the utility model lorry-mounted crane;
Fig. 2 is the example structure schematic representation of the hydraulic system of lorry-mounted crane shown in Figure 1;
Fig. 3 is A-A sectional view of Fig. 2;
Fig. 4 is the structural representation of hoist electrical system 9 among Fig. 2.
Among the figure: 1-pivoting support base assembly, 2-turntable, 3-hoist hydraulic pressure elevator assembly, 4-rotary motor, 5-crane amplitude variation oil cylinder, 6-crane hydraulic system, 7-hand-held indirection type hoist push-button switch, 8-electrichydraulic control case, 9-hoist electrical system, 10-basic arm, 11-support, 12-suspension hook rigging, 13-high-strength bolt, 14-the first packing ring, 15-fitting seat, 16-bearing, 17-worm screw, 18-pedestal, 19-bolt, 20-the second packing ring, 21-pin, 22-electromagnetic hydraulic pressure selector valve, 23-equilibrium valve, 24-electromagnetic relief valve, 25-hoist fuel tank, 26-hoist pump, 27-pivoting support, 28-audible-visual annunciator.
Embodiment
The schematic diagram of crane hydraulic system 6 in the hydraulic system of Fig. 1 the utility model lorry-mounted crane, crane hydraulic system 6 comprises among the figure: hoist fuel tank 25, be arranged on foremost hoist pump 26 of hoist fuel tank 25 output pipes, be arranged on the electromagnetic relief valve 24 between hoist fuel tank 25 output pipes and the return line, respectively the crane amplitude variation oil cylinder 5 that links to each other with hoist fuel tank 25 output pipes, hoist hydraulic pressure elevator assembly 3 and rotary motor 4; Input end at described crane amplitude variation oil cylinder 5, hoist hydraulic pressure elevator assembly 3 and rotary motor 4 is provided with an electromagnetic hydraulic pressure selector valve 22 separately; On the pipeline between described crane amplitude variation oil cylinder 5 and hoist hydraulic pressure elevator assembly 3 and the electromagnetic hydraulic pressure selector valve 22, also be provided with equilibrium valve 23.Wherein hoist fuel tank 25 and hoist pump 26 are as the power source of hoist in the utility model.
Fig. 2-4 is a specific embodiment of the utility model, the outline drawing of lorry-mounted crane when wherein being off working state as Fig. 2-4, the hydraulic system of lorry-mounted crane mainly is made up of automobile chassis and hoist, described hoist comprises: crane hydraulic system 6, pivoting support base assembly 1, turntable 2, basic arm 10, crane amplitude variation oil cylinder 5, hoist hydraulic pressure elevator assembly 3, rotary motor 4, crane hydraulic system 6, hoist electrical system 9 and suspension hook rigging 12, described pivoting support base assembly 1 comprises the pedestal 18 that is fixed on the automobile chassis, be fixed on pedestal 18 tops and outer end and wear the pivoting support 27 of worm-gear tooth shape, the worm screw 17 that is complementary with the worm gear of pivoting support 27 exterior edge faces, rotary motor 4 as the power intake of worm screw 17.
The number of described worm screw 17 is 1, and the equivalent friction angle of the Surface of action of the angle of spiral of worm screw 17 when being meshed with pivoting support 27 less than it, and the number of worm screw 17 can be 2,4 or 6.
Described rotary motor 4 is a rotary fluid motor, can also be the revolution electric motor.
Be provided with support 11 on automobile chassis and at the other end of pivoting support base assembly 1, support 11 is used for driving process supporting basic arm 10.
The utility model unites two into one pivoting support and worm gear, forms the pivoting support 27 with worm gear profile of tooth; Worm gear profile of tooth pivoting support 27 drives the pivoting support 27 outer rings rotation that worm screw 17 drives the worm gear profile of tooth with worm screw 17 engagements, rotary motor 4; The pivoting support 27 of worm gear profile of tooth is located with pin 21 earlier with fitting seat 15, and tentatively is linked together with the bolt 19 and second packing ring 20.Worm screw 17 usefulness bearings 16 are fixed on the fitting seat 15; Be fixed on the pedestal 18 with high-strength bolt 13 and first packing ring 14 pivoting support 27, fitting seat 15 the worm gear profile of tooth.
The turntable 2 usefulness high-strength bolts 13 and first packing ring 14 are fixed on the pivoting support 27 of worm gear profile of tooth; Basic arm 10 is hinged with turntable 2; Hoist hydraulic pressure elevator assembly 3 is installed in the rear portion of basic arm 10; Crane amplitude variation oil cylinder 5 one ends are connected with basic arm 10, and the other end is connected with turntable 2; Wire rope one end of suspension hook rigging 12 is by raising on the assembly 3 around involving in to hoist hydraulic pressure in basic arm 10 arms; When turntable 2 rotates, drive whole lorry-mounted crane revolution; Suspension hook rigging 12 adopts single multiplying power form.In order to realize the brake request of lorry-mounted crane, 17 numbers of worm screw adopt single head, make the worm and gear transmission have auto-lock function, utilize self-locking to realize the rotary braking of lorry-mounted crane, have saved the rotary braking device; Adopt single start worm, realized improving to greatest extent under the limited overall sizes rotary decelerating ratio, have Practical significance reducing rotating speed and mating the whole system parameter.
The approach that the utility model is realized: selected pivoting support 27 directly is processed into and the corresponding worm gear profile of tooth of worm screw when the cog machining, worm and gear can have multiple profile of tooth, comprises profiles of tooth such as common ZA type (Archimedes spiral), circle-arc tooth, twice-enveloping line.Tooth profile parameter is calculated by dynamic analysis to be determined.The pivoting support 27 and the worm screw 17 of worm gear profile of tooth are Steel Work, and according to the difference of usage requirement, worm and gear can be the hard flank of tooth or the soft flank of tooth, and general worm screw 17 flank of tooth are the hard flank of tooth and carry out flank of tooth grinding.Under the required precision of determining, guarantee processing and installation precision, adopt suitable lubricant medium, guarantee the normal lubricated of engagement position and bearing, adopt single start worm 17, though reduced transmission efficiency, but Worm and worm-wheel gearing has self-locking performance, has saved the rotary braking device.The hydraulic system of the utility model lorry-mounted crane can adapt to different places job requirements in the certain slope scope.
The electrical system of hoist described in Fig. 49 comprises: electromagnetic hydraulic pressure selector valve 22, hoist pump 26, electromagnetic relief valve 24, audible-visual annunciator 28, hand-held indirection type hoist push-button switch 7 and electrical liquid controller 8, its structure is: electrical liquid controller 8 links to each other with electromagnetic hydraulic pressure selector valve 22, hoist pump 26, electromagnetic relief valve 24, audible-visual annunciator 28 and hand-held indirection type hoist push-button switch 7 respectively by lead, and wherein electrichydraulic control case 8 is arranged on the automobile chassis of below, basic arm 10 middle parts.
Claims (1)
1. the hydraulic system of lorry-mounted crane, it is characterized in that crane hydraulic system comprises: the hoist fuel tank, be arranged on foremost hoist pump of hoist fuel tank output pipe, be arranged on the electromagnetic relief valve between hoist fuel tank output pipe and the return line, respectively the crane amplitude variation oil cylinder that links to each other with hoist fuel tank output pipe, hoist hydraulic pressure elevator assembly and rotary motor;
Input end at described crane amplitude variation oil cylinder, hoist hydraulic pressure elevator assembly and rotary motor is provided with an electromagnetic hydraulic pressure selector valve separately;
On the pipeline between described crane amplitude variation oil cylinder and hoist hydraulic pressure elevator assembly and the electromagnetic hydraulic pressure selector valve, also be provided with equilibrium valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200773692U CN201228685Y (en) | 2008-05-26 | 2008-05-26 | Hydraulic system of lorry-mounted crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200773692U CN201228685Y (en) | 2008-05-26 | 2008-05-26 | Hydraulic system of lorry-mounted crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201228685Y true CN201228685Y (en) | 2009-04-29 |
Family
ID=40633635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200773692U Expired - Fee Related CN201228685Y (en) | 2008-05-26 | 2008-05-26 | Hydraulic system of lorry-mounted crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201228685Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278331A (en) * | 2011-06-22 | 2011-12-14 | 徐州徐工随车起重机有限公司 | Multi-way directional valve for lorry-mounted crane and control method thereof |
| CN102923584A (en) * | 2011-08-08 | 2013-02-13 | 长沙桑尼重工机械有限公司 | Intelligent lorry crane with intelligent operation control system |
| CN103899588A (en) * | 2014-01-17 | 2014-07-02 | 徐州徐工随车起重机有限公司 | Lorry-mounted crane multi-way reversing device and straight arm lorry-mounted crane |
| CN109896461A (en) * | 2019-03-29 | 2019-06-18 | 北京航天发射技术研究所 | A kind of high reliability and safety big load hoist braking system and method |
-
2008
- 2008-05-26 CN CNU2008200773692U patent/CN201228685Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278331A (en) * | 2011-06-22 | 2011-12-14 | 徐州徐工随车起重机有限公司 | Multi-way directional valve for lorry-mounted crane and control method thereof |
| CN102923584A (en) * | 2011-08-08 | 2013-02-13 | 长沙桑尼重工机械有限公司 | Intelligent lorry crane with intelligent operation control system |
| CN102923584B (en) * | 2011-08-08 | 2014-12-10 | 长沙桑尼重工机械有限公司 | Intelligent lorry crane with intelligent operation control system |
| CN103899588A (en) * | 2014-01-17 | 2014-07-02 | 徐州徐工随车起重机有限公司 | Lorry-mounted crane multi-way reversing device and straight arm lorry-mounted crane |
| CN109896461A (en) * | 2019-03-29 | 2019-06-18 | 北京航天发射技术研究所 | A kind of high reliability and safety big load hoist braking system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20150526 |
|
| EXPY | Termination of patent right or utility model |