CN204175681U - Realize hydraulic system and the hoist of free rotary maneuverability pattern - Google Patents
Realize hydraulic system and the hoist of free rotary maneuverability pattern Download PDFInfo
- Publication number
- CN204175681U CN204175681U CN201420548257.6U CN201420548257U CN204175681U CN 204175681 U CN204175681 U CN 204175681U CN 201420548257 U CN201420548257 U CN 201420548257U CN 204175681 U CN204175681 U CN 204175681U
- Authority
- CN
- China
- Prior art keywords
- oil
- hydraulic system
- valve
- directional control
- free rotary
- 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.)
- Active
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a kind of hydraulic system and the hoist that realize free rotary maneuverability pattern, hydraulic system comprises oil hydraulic pump, for performing the rotary motor of revolution manipulation and the trainstop for braking described rotary motor, wherein also comprise the slewing directional control valve that the first shuttle valve and Median Function are Y type, two filler openings of described first shuttle valve connect rotation oil and the connection oil circuit that hoists respectively, oil outlet is connected with described trainstop, two actuator ports of described slewing directional control valve connect two cavitys of described rotary motor respectively, hoist connection oil circuit on be also provided with free rotary solenoid valve, the break-make of oil circuit is joined for controlling to hoist.The utility model is the slewing directional control valve of Y type by adopting Median Function in hydraulic system, rotary motor two cavity is communicated with, thus achieves free rotary function, does not need the mode of employing rotary buffering valve to realize, reduces cost of production.
Description
Technical field
The utility model relates to engineering machinery field, particularly relates to a kind of hydraulic system and the hoist that realize free rotary maneuverability pattern.
Background technique
At present; hoisting of truck crane realizes mainly through hydraulic system with revolute function; often unbalance loading phenomenon can be there is when hoisting weight; in order to effectively prevent unbalance loading, the Control in Hydraulic Rotation System of current little tonnage truck crane all has free rotary operating function, and free rotary is communicated with by two of rotary motor cavity volumes; when suspension hook and weight are in same Radius; but when weight is not immediately below suspension hook, realizes lift heavy automatic capturing, effectively prevent unbalance loading.
Prior art mainly through arranging the mode of rotary buffering valve 2a and free rotary solenoid valve 1a to realize free rotary function in hydraulic system, its principle as shown in Figure 1, main valve valve rod 8a is O type Median Function, when have revolution or hoist action time, get high pressure oil by double linked one-way valve 9a and trainstop 5a opened.When weight hoists, if weight is not immediately below arm, controls free rotary solenoid valve 1a and obtain electric, then under weight involves power effect, rotary motor 4a side is made to produce high pressure, shuttle valve 6a gets the pressure oil of the higher side of rotary motor 4a pressure at both sides, causes the both sides of main valve plug 7a respectively, and pressure oil produces pressure reduction when through overdamping 3a, when pressure reduction is greater than main valve plug 7a spring setting pressure, main valve plug 7a opens, and rotary motor 4a two cavity volumes is communicated with, realizes free rotary.
This hydraulic system cost realizing free rotary maneuverability pattern is higher, and along with increasingly sharpening of crane market competition, in order to the market competitiveness of improving product, the Economy of product becomes the factor that user more and more pays close attention to.
Summary of the invention
The purpose of this utility model proposes a kind of hydraulic system and hoist realizing free rotary maneuverability pattern, can reduce cost of production.
For achieving the above object, the utility model provides a kind of hydraulic system realizing free rotary maneuverability pattern on the one hand, comprise oil hydraulic pump, for performing the rotary motor of revolution manipulation and the trainstop for braking described rotary motor, also comprise the slewing directional control valve that the first shuttle valve and Median Function are Y type, two filler openings of described first shuttle valve connect rotation oil and the connection oil circuit that hoists respectively, oil outlet is connected with described trainstop, two actuator ports of described slewing directional control valve connect two cavitys of described rotary motor respectively, hoist connection oil circuit on be also provided with free rotary solenoid valve, the break-make of oil circuit is joined for controlling to hoist.
Further, described oil hydraulic pump is two pumps, an oil outlet of described two pumps connects rotation oil, another oil outlet connects the connection oil circuit that hoists, described hydraulic system also comprises the second shuttle valve, two filler openings of described second shuttle valve connect filler opening and the oil outlet of described rotary motor respectively, and two filler openings of described first shuttle valve connect the oil outlet of described second shuttle valve and the connection oil circuit that hoists respectively.
Further, when described slewing directional control valve is in meta, an oil outlet of described oil hydraulic pump is switched to next connection actuator fuel feeding from giving rotation oil fuel feeding.
Further, described oil hydraulic pump is two pumps, and an oil outlet of described two pumps connects rotation oil, and another oil outlet connects the connection oil circuit that hoists, and when described slewing directional control valve is in meta, the rotation oil oil outlet of described oil hydraulic pump directly connects fuel tank.
Further, described oil hydraulic pump is the multiplex pump of more than three, wherein two oil outlets of described multiplex pump connect rotation oil and the connection oil circuit that hoists respectively, all the other oil outlets connect other work connection oil circuit of described hydraulic system, when described slewing directional control valve is in meta, the rotation oil oil outlet of described oil hydraulic pump directly connects fuel tank.
Further, the oil circuit between the oil outlet and described trainstop of described first shuttle valve is provided with foot valve, described foot valve is used for, in revolution manipulation process, making described trainstop carry out emergency braking to described rotary motor.
Further, described slewing directional control valve is hand-operated direction valve, solenoid directional control valve or pilot operated directional control valve.
Further, described slewing directional control valve is three six-way transfer valves.
Further, described free rotary solenoid valve is two position four-way solenoid valves or 2/2-way solenoid valve.
For achieving the above object, the utility model provides a kind of hoist on the other hand, comprises above-mentioned arbitrary described hydraulic system realizing free rotary maneuverability pattern.
Based on technique scheme, the utility model is the slewing directional control valve of Y type by adopting Median Function in hydraulic system, rotary motor two cavity is communicated with, thus achieves free rotary function easily, do not need to adopt the mode of rotary buffering valve to realize, reduce cost of production.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the free rotary hydraulic system principle figure of prior art;
Fig. 2 is the schematic diagram that the utility model realizes an embodiment of free rotary hydraulic system;
Fig. 3 is the schematic diagram that the utility model realizes another embodiment of free rotary hydraulic system.
Embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Fig. 2 is the schematic diagram that the utility model realizes an embodiment of free rotary hydraulic system, comprise oil hydraulic pump 2, for performing the rotary motor 4 that revolution is handled, for the trainstop 5 of brake rotary motor 4, first shuttle valve 6 and Median Function are the slewing directional control valve 8 of Y type, two filler openings of the first shuttle valve 6 connect rotation oil and the connection oil circuit that hoists respectively, oil outlet is connected with trainstop 5, two actuator ports of slewing directional control valve 8 connect two cavitys of rotary motor 4 respectively, hoist connection oil circuit on be also provided with free rotary solenoid valve 1, control to hoist and join the break-make of oil circuit.
Rotary buffering valve 2a is adopted to realize free rotary function in prior art, and the utility model is the slewing directional control valve 8 of Y type by adopting Median Function in hydraulic system, two cavitys of rotary motor 4 are communicated with, thus achieve free rotary function, do not need to adopt the mode of rotary buffering valve 2a to realize, reduce cost of production.
Wherein oil hydraulic pump 2 is the rotation oil of hoist and the connection oil circuit fuel feeding that hoists, also can be other work such as luffing or flexible manipulation connection oil circuit fuel feeding as required, according to the topology requirement of operating function and actual hydraulic pressure system, independently oil hydraulic pump 2 fuel feeding can be chosen for different operating functions, also can consider from the angle reducing hydraulic system complexity to select connection pump to carry out fuel feeding.
In an embodiment of the present utility model, oil hydraulic pump 2 is two pumps, one of them oil outlet connects rotation oil, when slewing directional control valve 8 is in meta, be converted to next connection actuator fuel feeding, another oil outlet connects the connection oil circuit that hoists, and in Fig. 2, oil hydraulic pump 2 is connected with dotted line with free rotary solenoid valve 1, only represent that oil hydraulic pump 2 is the alliance oil that hoists, and not should be understood to direct connection.This hydraulic system also comprises filler opening and the oil outlet that the second shuttle valve 3, two filler openings connect rotary motor 4 respectively, and two filler openings of the first shuttle valve 6 connect the oil outlet of the second shuttle valve 3 and the connection oil circuit that hoists respectively.Free rotary solenoid valve 1 be arranged on hoist connection oil circuit on, by being located at the switch control rule free rotary solenoid valve 1 on electric control box, so control hoist connection oil circuit break-make, improve the convenience of operation.Free rotary solenoid valve 1 can select two position four-way solenoid valves or 2/2-way solenoid valve etc. to play the component of on-off action, and switch selectable is selected rocker switch or often driven direct acting switch.Hydraulic system in-line also can arrange relief valve, play the effect of restriction inlet pressure and protective system safety.
When hoist carries out hoisting manipulation, slewing directional control valve 8 is in meta, two chambeies of rotary motor 4 are connected with fuel tank, pressure reduces to zero, the oil outlet pressure of the second shuttle valve 3 is zero, when not according to rocker switch, hoists and joins not fuel feeding, the pressure that the oil outlet of the first shuttle valve 6 is got is zero, and trainstop 5 pairs of rotary motors 4 are braked; When often pressing rocker switch, hoist alliance oil, get high pressure oil by the first shuttle valve 6 to be opened by trainstop 5, revolution is in free rotary state, can make like this when with Joystick hoisting heavy, if weight has unbalance loading, arm free rotary automatic alignment weight center, after weight is liftoff, unclamps rocker switch, make revolution be in braking state, carry out lifting operation.
When hoist carries out revolution manipulation, by the bidirectional rotation of the switching controls arm of slewing directional control valve about 8 two, when not carrying out revolution manipulation, control slewing directional control valve 8 and get back to meta, namely trainstop 5 is in braking state.
When hydraulic system only perform revolution and hoist handle time, if oil hydraulic pump 2 is duplex pump, have the mode of execution that two kinds are feasible.
In one embodiment, according to the mode shown in Fig. 2, oil hydraulic pump 2 is the oil outlet of revolution manipulation fuel feeding is not actuator's fuel feeding that next joins, this oil hydraulic pump 2 is rotation oil and the connection oil circuit fuel feeding that hoists, accordingly, slewing directional control valve 8 can select three position four-way directional control valve, or selects three six-way transfer valves to be closed by unwanted hydraulic fluid port.
In another kind of embodiment, according to the mode shown in Fig. 3, oil hydraulic pump 2 is rotation oil and the connection oil circuit fuel feeding that hoists, two filler openings of the first shuttle valve 6 connect rotation oil and the connection oil circuit that hoists respectively, oil outlet is connected with trainstop 5, and when slewing directional control valve 8 is in meta, two chambeies of rotary motor 4 are connected with fuel tank, oil hydraulic pump 2 the direct oil sump tank of rotation oil fuel feeding, realize free rotary.
In another embodiment of the present utility model, oil hydraulic pump 2 is treble pump, for hoisting, turning round and other work alliance oil in hydraulic system, as flexible or luffing etc., Fig. 3 is the schematic diagram that the utility model realizes another embodiment of free rotary hydraulic system, wherein two oil outlets of oil hydraulic pump 2 connect rotation oil and the connection oil circuit that hoists respectively, other work connection oil circuit in all the other oil outlet connecting fluid pressing systems, in Fig. 3, oil hydraulic pump 2 is connected with dotted line with free rotary solenoid valve 1, only represent that oil hydraulic pump 2 is the alliance oil that hoists, and should not be construed as direct connection.Two filler openings of the first shuttle valve 6 connect rotation oil and the connection oil circuit that hoists respectively, and oil outlet is connected with trainstop 5, and when slewing directional control valve 8 is in meta, two chambeies of rotary motor 4 are connected with fuel tank, oil hydraulic pump 2 the direct oil sump tank of rotation oil fuel feeding.Oil hydraulic pump 2 in the utility model also can be the multiplex pump of more than three, for being multi-purpose actuator fuel feeding, is convenient to the modularization expansion of hydraulic system function.
When hoist carries out hoisting manipulation, when not according to rocker switch, hoist and join not fuel feeding, the direct oil sump tank of rotation oil fuel feeding of oil hydraulic pump 2, the pressure that the oil outlet of the first shuttle valve 6 is got is zero, and trainstop 5 pairs of rotary motors 4 are braked; When often pressing rocker switch, hoist alliance oil, get high pressure oil by the first shuttle valve 6 to be opened by trainstop 5, revolution is in free rotary state, can make like this when with Joystick hoisting heavy, if weight has unbalance loading, arm free rotary automatic alignment weight center, after weight is liftoff, unclamps rocker switch, make revolution be in braking state, carry out lifting operation.
When hoist carries out revolution manipulation, by the bidirectional rotation of the switching controls arm of slewing directional control valve about 8 two, when not carrying out revolution manipulation, control slewing directional control valve 8 and get back to meta, namely trainstop 5 is in braking state.
In other embodiment of the present utility model; oil circuit between the oil outlet and trainstop 5 of the first shuttle valve 6 can be provided with foot valve 7; for when turning round manipulation; when needing emergency braking; slamming foot valve 7 makes trainstop 5 pairs of rotary motors 4 brake; trainstop 5 can rely on speed reducer to realize mechanical braking, carries out safety protection to hydraulic system, is also conducive to artificially ensureing the job safety of whole hoist.
In embodiment of the present utility model, slewing directional control valve 8, according to the difference of control mode, can be hand-operated direction valve, solenoid directional control valve or pilot operated directional control valve, according to whether carrying out next connection manipulation selection three six-way transfer valves or three position four-way directional control valve.
Realize the hydraulic system embodiment of free rotary maneuverability pattern from illustrated each above, these hydraulic systems all can realize free rotary operating function effectively.Correspondingly, the hydraulic system embodiment that the utility model realizes free rotary maneuverability pattern can be widely used in various types of hoist, as mechanical automobile hoist and leading type truck crane etc., by installing aforesaid hydraulic system, reduce cost of production.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to embodiment of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technological scheme scope of the utility model request protection.
Claims (10)
1. one kind realizes the hydraulic system of free rotary maneuverability pattern, comprise oil hydraulic pump, for performing the rotary motor of revolution manipulation and the trainstop for braking described rotary motor, it is characterized in that, also comprise the slewing directional control valve that the first shuttle valve and Median Function are Y type, two filler openings of described first shuttle valve connect rotation oil and the connection oil circuit that hoists respectively, oil outlet is connected with described trainstop, two actuator ports of described slewing directional control valve connect two cavitys of described rotary motor respectively, hoist connection oil circuit on be also provided with free rotary solenoid valve, the break-make of oil circuit is joined for controlling to hoist.
2. the hydraulic system realizing free rotary maneuverability pattern according to claim 1, it is characterized in that, described oil hydraulic pump is two pumps, an oil outlet of described two pumps connects rotation oil, another oil outlet connects the connection oil circuit that hoists, described hydraulic system also comprises the second shuttle valve, and two filler openings of described second shuttle valve connect filler opening and the oil outlet of described rotary motor respectively, and two filler openings of described first shuttle valve connect the oil outlet of described second shuttle valve and the connection oil circuit that hoists respectively.
3. the hydraulic system realizing free rotary maneuverability pattern according to claim 2, is characterized in that, when described slewing directional control valve is in meta, an oil outlet of described oil hydraulic pump is switched to next connection actuator fuel feeding from giving rotation oil fuel feeding.
4. the hydraulic system realizing free rotary maneuverability pattern according to claim 1, it is characterized in that, described oil hydraulic pump is two pumps, an oil outlet of described two pumps connects rotation oil, another oil outlet connects the connection oil circuit that hoists, when described slewing directional control valve is in meta, the rotation oil oil outlet of described oil hydraulic pump directly connects fuel tank.
5. the hydraulic system realizing free rotary maneuverability pattern according to claim 1, it is characterized in that, described oil hydraulic pump is the multiplex pump of more than three, wherein two oil outlets of described multiplex pump connect rotation oil and the connection oil circuit that hoists respectively, all the other oil outlets connect other work connection oil circuit of described hydraulic system, when described slewing directional control valve is in meta, the rotation oil oil outlet of described oil hydraulic pump directly connects fuel tank.
6. according to the arbitrary described hydraulic system realizing free rotary maneuverability pattern of Claims 1 to 5, it is characterized in that, oil circuit between the oil outlet and described trainstop of described first shuttle valve is provided with foot valve, described foot valve is used for, in revolution manipulation process, making described trainstop carry out emergency braking to described rotary motor.
7., according to the arbitrary described hydraulic system realizing free rotary maneuverability pattern of Claims 1 to 5, it is characterized in that, described slewing directional control valve is hand-operated direction valve, solenoid directional control valve or pilot operated directional control valve.
8. the hydraulic system realizing free rotary maneuverability pattern according to claim 7, is characterized in that, described slewing directional control valve is three six-way transfer valves.
9., according to the arbitrary described hydraulic system realizing free rotary maneuverability pattern of Claims 1 to 5, it is characterized in that, described free rotary solenoid valve is two position four-way solenoid valves or 2/2-way solenoid valve.
10. a hoist, is characterized in that, comprises the arbitrary described hydraulic system realizing free rotary maneuverability pattern of claim 1 ~ 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420548257.6U CN204175681U (en) | 2014-09-23 | 2014-09-23 | Realize hydraulic system and the hoist of free rotary maneuverability pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420548257.6U CN204175681U (en) | 2014-09-23 | 2014-09-23 | Realize hydraulic system and the hoist of free rotary maneuverability pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175681U true CN204175681U (en) | 2015-02-25 |
Family
ID=52564492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420548257.6U Active CN204175681U (en) | 2014-09-23 | 2014-09-23 | Realize hydraulic system and the hoist of free rotary maneuverability pattern |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175681U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112875552A (en) * | 2019-11-29 | 2021-06-01 | 山河智能装备股份有限公司 | Winch follow-up control hydraulic system |
-
2014
- 2014-09-23 CN CN201420548257.6U patent/CN204175681U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112875552A (en) * | 2019-11-29 | 2021-06-01 | 山河智能装备股份有限公司 | Winch follow-up control hydraulic system |
| CN112875552B (en) * | 2019-11-29 | 2024-05-17 | 山河智能装备股份有限公司 | Winch follow-up control hydraulic system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103470565B (en) | The rotary system of rotary buffering valve and hoist | |
| CN103671335A (en) | Load-sensitive electric proportional multi-loop valve | |
| CN101954927B (en) | Multi-load hydraulic sensing system for single-power source and multi-system working | |
| CN103950870B (en) | A kind of forklift hydraulic system of double pump fuel feeding band energy regenerating | |
| CN104074825B (en) | Two-way choice type interflow load-transducing multi-way valve | |
| JP2010065510A (en) | Driving device for working machine | |
| WO2011145892A2 (en) | Device for controlling rising velocity of actuator in heavy equipment | |
| CN102616705A (en) | Energy-saving forklift hydraulic system with energy recovery function | |
| CN102465935B (en) | Pressure-compensated valve, load-sensitive hydraulic system and crane applying same | |
| CN102992195B (en) | Counterweight hanging control device, hydraulic control system and mobile crane | |
| CN204553386U (en) | The control valve of proportional multi-way valve, control connection, proportional multi-way valve and hoist | |
| CN109914517B (en) | Intelligent rotation energy-saving control system of excavator | |
| CN204175681U (en) | Realize hydraulic system and the hoist of free rotary maneuverability pattern | |
| CN109017981B (en) | Walking machine and hydraulic steering system thereof | |
| CN105604109B (en) | A kind of hydraulic regeneration system of excavator swing arm | |
| CN203890013U (en) | Double-pump oil supply and energy recovery type forklift hydraulic system | |
| CN105422530B (en) | Guide's integrated multipath valve group and crane | |
| CN203717509U (en) | Lorry-mounted crane multi-way reversing device and straight-arm lorry-mounted crane | |
| CN204284053U (en) | For guide's oil circuit relief arrangement and the pilot hydraulic control system of virtual wall function | |
| CN202646196U (en) | Closed type hydraulic system and crane | |
| CN103225634B (en) | pilot control module, pilot brake control system and engineering machinery | |
| CN202789806U (en) | Double-pump confluence hydraulic loop combined valve | |
| CN104179739A (en) | Dual-pump bidirectional confluence control system and fire truck adopting same | |
| CN102022516B (en) | Wheeled crane and chassis hydraulic control system thereof | |
| CN201884601U (en) | Wheeled crane and chassis hydraulic control system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |