CN203978977U - A kind of hydraulic system and hydraulic shear - Google Patents
A kind of hydraulic system and hydraulic shear Download PDFInfo
- Publication number
- CN203978977U CN203978977U CN201420407370.2U CN201420407370U CN203978977U CN 203978977 U CN203978977 U CN 203978977U CN 201420407370 U CN201420407370 U CN 201420407370U CN 203978977 U CN203978977 U CN 203978977U
- Authority
- CN
- China
- Prior art keywords
- fluid port
- hydraulic fluid
- hydraulic
- communicated
- shear
- 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
Links
- 239000012530 fluid Substances 0.000 claims abstract description 113
- 238000009530 blood pressure measurement Methods 0.000 claims description 9
- 238000010008 shearing Methods 0.000 abstract description 18
- 239000003921 oil Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009699 differential effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model proposes a kind of hydraulic system, be used for the hydraulic shear being used in conjunction with excavator, comprise oil cylinder and valve piece, described valve piece is provided with the first hydraulic fluid port and the second hydraulic fluid port, described oil cylinder is communicated with described valve piece by described the first hydraulic fluid port and the second hydraulic fluid port, on described valve piece, be also provided with the 3rd hydraulic fluid port and the 4th hydraulic fluid port, described the first hydraulic fluid port is communicated with described the 3rd hydraulic fluid port, described the second hydraulic fluid port is communicated with described the 4th hydraulic fluid port, and described the 3rd hydraulic fluid port is respectively used to be communicated with excavator with described the 4th hydraulic fluid port.On the other hand, the utility model also proposes a kind of hydraulic shear that comprises above-mentioned hydraulic system.The hydraulic system of this structure, in the time applying on hydraulic shear, hydraulic shear can open fast, and in shear history, shearing force can increase and constantly increase with load, can fast return after having sheared, therefore, shearing speed is faster, and working efficiency is higher.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of hydraulic system and hydraulic shear.
Background technique
Hydraulic shear is to use one of cutting implement comparatively widely, owing to having advantages of that intensity is high, strength is large, volume is little and the aspect such as lightweight, be widely used at present the dismounting of steel-structure factory building, shearing, the shearing of steel profile and the shearing of steel scrap etc. of abandoned car foundation.
But the hydraulic shear using at present, also exists many deficiencies, in the time of the larger shearing force of needs, hydraulic fluid flow rate demand is also larger, and operating rate also can be slower.On the contrary, when hydraulic fluid flow rate demand hour, although operating rate is fast, shearing force is less.In addition,, when hydraulic shear closure, while carrying out shearing work, speed is relatively slow; And open when hydraulic shear, while not carrying out shearing work, speed is relatively very fast.
For above-mentioned deficiency, on market, also there is hydraulic shear to adopt traditional differential connection, although speed has improved, shearing force has obviously declined.
The deficiency existing for current hydraulic shear, how to provide a kind of working efficiency higher, and the hydraulic system that the shearing force of hydraulic shear can increase with load, and comprise and the hydraulic shear of this hydraulic system become those skilled in the art to need the technical problem of solution badly.
Model utility content
Based on the deficiencies in the prior art, one of problem to be solved in the utility model is, how to provide a kind of working efficiency higher, and the shearing force of the hydraulic shear hydraulic system that can increase with load.
Two of problem to be solved in the utility model is how a kind of hydraulic shear that comprises above-mentioned hydraulic shear is provided.
For one of solving the problems of the technologies described above, the utility model provides a kind of hydraulic system, be used for the hydraulic shear being used in conjunction with excavator, comprise oil cylinder and valve piece, described valve piece is provided with the first hydraulic fluid port and the second hydraulic fluid port, described oil cylinder is communicated with described valve piece by described the first hydraulic fluid port and the second hydraulic fluid port, on described valve piece, be also provided with the 3rd hydraulic fluid port and the 4th hydraulic fluid port, described the first hydraulic fluid port is communicated with described the 3rd hydraulic fluid port, described the second hydraulic fluid port is communicated with described the 4th hydraulic fluid port, and described the 3rd hydraulic fluid port is respectively used to be communicated with excavator with described the 4th hydraulic fluid port.
As the improvement on the one hand of a kind of hydraulic system of the utility model, described oil cylinder comprises rod chamber and rodless cavity, is respectively equipped with rod chamber hydraulic fluid port and rodless cavity hydraulic fluid port on described rod chamber and rodless cavity.
As the improvement on the one hand of a kind of hydraulic system of the utility model, described rodless cavity hydraulic fluid port is communicated with the first hydraulic fluid port by pipeline, and described rod chamber hydraulic fluid port is communicated with the second hydraulic fluid port by pipeline.
As the improvement on the one hand of a kind of hydraulic system of the utility model, on described valve piece, be also provided with the pressure measurement hydraulic fluid port for pressure measurement.
As the improvement on the one hand of a kind of hydraulic system of the utility model, described hydraulic system also comprises one-way valve, and the two ends of described one-way valve are communicated with described pressure measurement hydraulic fluid port respectively.
As the improvement on the one hand of a kind of hydraulic system of the utility model, described the first hydraulic fluid port and the second hydraulic fluid port are communicated with described one-way valve respectively.
As the improvement on the one hand of a kind of hydraulic system of the utility model, described hydraulic system also comprises equilibrium valve, and described equilibrium valve is communicated with described the second hydraulic fluid port and the 4th hydraulic fluid port respectively.
The hydraulic system of said structure, be used for the hydraulic shear being used in conjunction with excavator, comprise oil cylinder and valve piece, valve piece is provided with the first hydraulic fluid port and the second hydraulic fluid port, oil cylinder is communicated with valve piece by the first hydraulic fluid port and the second hydraulic fluid port, is also provided with the 3rd hydraulic fluid port and the 4th hydraulic fluid port on valve piece, and the first hydraulic fluid port and the 3rd hydraulic fluid port are communicated with, the second hydraulic fluid port is communicated with the 4th hydraulic fluid port, and the 3rd hydraulic fluid port and the 4th hydraulic fluid port are respectively used to be communicated with excavator.The hydraulic system of this structure, in the time applying on hydraulic shear, hydraulic shear can open fast, and in shear history, shearing force can increase and constantly increase with load, can fast return after having sheared, therefore, shearing speed is faster, and working efficiency is higher.
For address the above problem two, the utility model proposes a kind of hydraulic shear, comprise hydraulic system, described hydraulic system is hydraulic system as above.
The hydraulic shear of this structure, has shearing speed fast, the advantage that shear effect is good.
Brief description of the drawings
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.
Fig. 1 is the schematic diagram of a kind of hydraulic system of the utility model;
Fundamental diagram when Fig. 2 is the F.F. of the utility model hydraulic shear;
Fig. 3 is the fundamental diagram of the utility model hydraulic shear pressurization;
The fundamental diagram of Fig. 4 the utility model hydraulic shear fast return process.
In Fig. 1 to Fig. 4, the corresponding relation of reference character is:
1 oil cylinder 2 valve piece 3 one-way valves
4 speedup valve 5 equilibrium valves
C1 first hydraulic fluid port C2 the second hydraulic fluid port V1 the 3rd hydraulic fluid port
V2 the 4th hydraulic fluid port G1, G2 pressure measurement hydraulic fluid port
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Hydraulic system as shown in Figure 1, be used for the hydraulic shear being used in conjunction with excavator, comprise oil cylinder 1 and speedup valve 4, speedup valve 4 comprises valve piece 2, and valve piece 2 is provided with the first hydraulic fluid port C1 and the second hydraulic fluid port C2, and oil cylinder 1 is communicated with valve piece 2 by the first hydraulic fluid port C1 and the second hydraulic fluid port C2, on valve piece 2, be also provided with the 3rd hydraulic fluid port V1 and the 4th hydraulic fluid port V2, the first hydraulic fluid port C1 and the 3rd hydraulic fluid port V1 are communicated with, and the second hydraulic fluid port C2 and the 4th hydraulic fluid port V2 are communicated with, and the 3rd hydraulic fluid port V1 and the 4th hydraulic fluid port V2 are respectively used to be communicated with excavator.Oil cylinder 1 comprises rod chamber and rodless cavity, and rod chamber is provided with rod chamber hydraulic fluid port, and rodless cavity is provided with rodless cavity hydraulic fluid port, and rodless cavity hydraulic fluid port is communicated with the first hydraulic fluid port C1 by pipeline, and rod chamber hydraulic fluid port is communicated with the second hydraulic fluid port C2 by pipeline.
In technique scheme, for convenience of measuring system pressure, on valve piece 2, also offer pressure measurement hydraulic fluid port G1 and G2 for measuring system pressure, between pressure measurement hydraulic fluid port G1 and G2, be also provided with one-way valve 3, and the first hydraulic fluid port C1 and the second hydraulic fluid port C2 are communicated with one-way valve 3 respectively.
Further, hydraulic system also comprises equilibrium valve 5, and equilibrium valve 5 is communicated with the second hydraulic fluid port C2 and the 4th hydraulic fluid port V2 respectively, is arranged on the pipeline between the second hydraulic fluid port C2 and the 4th hydraulic fluid port V2.
On the other hand, the utility model also proposes a kind of hydraulic shear, comprises hydraulic system, and particularly, hydraulic system is the as above hydraulic system described in any one.
The hydraulic system of said structure, while applying on hydraulic shear, working principle is as follows:
When hydraulic shear is during in F.F. working procedure, as shown in the direction of arrow in Fig. 2, hydraulic oil enters valve piece 2 from the 3rd hydraulic fluid port V1 of valve piece 2, enter the rodless cavity of oil cylinder 1 by the first hydraulic fluid port C1 of valve piece 2, because load is less, system pressure is also lower, do not reach the cracking pressure of equilibrium valve 5, equilibrium valve 5 is in closed condition, hydraulic oil in the rod chamber of oil cylinder 1 is back to by one-way valve 3 in the rodless cavity of oil cylinder 1, oil cylinder 1 is realized differential action, the piston rod fast moving in oil cylinder 1, and hydraulic shear is realized F.F. work.
When hydraulic shear is in the time that work is entered process, as shown in the direction of arrow in Fig. 3, hydraulic oil enters valve piece 2 through the 3rd hydraulic fluid port V1, and enter the rodless cavity of oil cylinder 1 through the first hydraulic fluid port C1 of valve piece 2, hydraulic shear touches after material, and system pressure rises gradually, while reaching the cracking pressure of equilibrium valve 5, equilibrium valve 5 is opened, and one-way valve 3 is closed.Fluid in the rod chamber of oil cylinder 1, by equilibrium valve 5, is got back in the fuel tank of hydraulic system through the 4th hydraulic fluid port V2 of valve piece 2, and oil cylinder 1 is realized supercharging work and entered work, and shearing force increases along with the increase of load.
When hydraulic shear is in open configuration, when oil cylinder 1 fast return working procedure, as shown in the direction of arrow in Fig. 4, hydraulic oil enters valve piece 2 through the 4th hydraulic fluid port V2, by the equilibrium valve 5 of valve piece 2, enter the rod chamber of oil cylinder 1, because load is less, system pressure is also lower, do not reach the cracking pressure of one-way valve 3, one-way valve 3 is in closed condition, and the hydraulic oil in rodless cavity flows back in the fuel tank of hydraulic system by the 3rd hydraulic fluid port V1 of valve piece 2, oil cylinder 1 is realized fast return work, and hydraulic shear opens fast.
The hydraulic system of said structure and hydraulic system, utilize one-way valve 3 and equilibrium valve 5 to form the hydraulic system of hydraulic shear, realizes hydraulic shear when non-loaded, the differential connection of hydraulic shear, and hydraulic shear can quick-make; In the time that load increases, disconnect differential connection, the pressure of oil hydraulic cylinder increases with load, and the shearing force of hydraulic shear increases with the increase of load, until cut off material; When hydraulic shear is opened, hydraulic shear fast return.In addition, can fast return after having sheared.In general, comprise the hydraulic shear of this hydraulic system, the shearing speed of hydraulic shear is fast, and shear effect is good.And the user cost of hydraulic shear is low, market prospects are good.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. a hydraulic system, be used for the hydraulic shear being used in conjunction with excavator, comprise oil cylinder (1) and valve piece (2), it is characterized in that, described valve piece (2) is provided with the first hydraulic fluid port (C1) and the second hydraulic fluid port (C2), described oil cylinder (1) is communicated with described valve piece (2) by described the first hydraulic fluid port (C1) and the second hydraulic fluid port (C2), on described valve piece (2), be also provided with the 3rd hydraulic fluid port (V1) and the 4th hydraulic fluid port (V2), described the first hydraulic fluid port (C1) is communicated with described the 3rd hydraulic fluid port (V1), described the second hydraulic fluid port (C2) is communicated with described the 4th hydraulic fluid port (V2), described the 3rd hydraulic fluid port (V1) is respectively used to be communicated with excavator with described the 4th hydraulic fluid port (V2).
2. hydraulic system according to claim 1, is characterized in that, described oil cylinder (1) comprises rod chamber and rodless cavity, is respectively equipped with rod chamber hydraulic fluid port and rodless cavity hydraulic fluid port on described rod chamber and rodless cavity.
3. hydraulic system according to claim 2, is characterized in that, described rodless cavity hydraulic fluid port is communicated with the first hydraulic fluid port (C1) by pipeline, and described rod chamber hydraulic fluid port is communicated with the second hydraulic fluid port (C2) by pipeline.
4. hydraulic system according to claim 1, is characterized in that, is also provided with the pressure measurement hydraulic fluid port (G1, G2) for pressure measurement on described valve piece (2).
5. hydraulic system according to claim 4, is characterized in that, described hydraulic system also comprises one-way valve (3), and the two ends of described one-way valve (3) are communicated with described pressure measurement hydraulic fluid port (G1, G2) respectively.
6. hydraulic system according to claim 5, is characterized in that, described the first hydraulic fluid port (C1) and the second hydraulic fluid port (C2) are communicated with described one-way valve (3) respectively.
7. hydraulic system according to claim 1, it is characterized in that, described hydraulic system also comprises equilibrium valve (5), and described equilibrium valve (5) is communicated with described the second hydraulic fluid port (C2) and the 4th hydraulic fluid port (V2) respectively.
8. a hydraulic shear, comprises hydraulic system, it is characterized in that, described hydraulic system is the hydraulic system described in any one in claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420407370.2U CN203978977U (en) | 2014-07-23 | 2014-07-23 | A kind of hydraulic system and hydraulic shear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420407370.2U CN203978977U (en) | 2014-07-23 | 2014-07-23 | A kind of hydraulic system and hydraulic shear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978977U true CN203978977U (en) | 2014-12-03 |
Family
ID=51976429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420407370.2U Expired - Fee Related CN203978977U (en) | 2014-07-23 | 2014-07-23 | A kind of hydraulic system and hydraulic shear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203978977U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485085A (en) * | 2016-01-14 | 2016-04-13 | 华德宝机械（昆山）有限公司 | Lifting oil cylinder system for boarding bridge, lifting method and boarding bridge with system |
| CN107339270A (en) * | 2017-09-05 | 2017-11-10 | 烟台艾迪精密机械股份有限公司 | A kind of hydraulic shear cylinder control system and hydraulic shear |
| CN116085330A (en) * | 2023-01-04 | 2023-05-09 | 柳州五菱汽车工业有限公司 | Hydraulic system and variable speed control method for extending cylinder piston rod |
-
2014
- 2014-07-23 CN CN201420407370.2U patent/CN203978977U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485085A (en) * | 2016-01-14 | 2016-04-13 | 华德宝机械（昆山）有限公司 | Lifting oil cylinder system for boarding bridge, lifting method and boarding bridge with system |
| CN107339270A (en) * | 2017-09-05 | 2017-11-10 | 烟台艾迪精密机械股份有限公司 | A kind of hydraulic shear cylinder control system and hydraulic shear |
| CN116085330A (en) * | 2023-01-04 | 2023-05-09 | 柳州五菱汽车工业有限公司 | Hydraulic system and variable speed control method for extending cylinder piston rod |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203978977U (en) | A kind of hydraulic system and hydraulic shear | |
| CN204646867U (en) | A kind of hydraulic system of cylinder bench | |
| CN203272291U (en) | Workpiece feeding rapid unloading loop | |
| CN203162156U (en) | Y-shaped seal ring | |
| CN204199342U (en) | Excavator swing arm damping fluid pressure control device | |
| CN203830238U (en) | Manual hydraulic perfusion device | |
| CN203992579U (en) | Hydraulic system of cutting machine | |
| CN206035929U (en) | Large -scale plate shearing machine hydraulic control system | |
| CN205744649U (en) | A kind of hydraulic system improving hydraulic shear work efficiency | |
| CN207093479U (en) | A kind of hydraulic shear cylinder control system and hydraulic shear | |
| CN206034529U (en) | Excavator swing arm hydraulic control system | |
| CN204324803U (en) | A kind of novel hydraulic system of scissors lift bench | |
| CN204300013U (en) | A kind of hydraulic jack | |
| CN204140545U (en) | A kind of hydraulic mechanism increasing cylinder buffer stroke | |
| CN202851525U (en) | Rapid hydro-cylinder hydraulic system | |
| CN204113810U (en) | A kind of high-pressure high-flow Sealing test system | |
| CN203272297U (en) | Flow distribution and collecting valve synchronizing circuit device | |
| CN202577439U (en) | Secondary backpressure system of hydraulic excavator | |
| CN202612248U (en) | Combined-type hydraulic cylinder | |
| CN202251191U (en) | Main oil way reversing integrated control valve block | |
| CN202612100U (en) | Industrial pump bushing | |
| CN208534884U (en) | It is hydraulic tiltedly to cut host valve platform | |
| CN207986586U (en) | A kind of scissor-type lifting platform power unit | |
| CN205298107U (en) | Sector gate closed hydraulic drive system | |
| CN205205894U (en) | Excavator and swing arm potential energy recovery system thereof |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20180723 |