CN207093479U - A kind of hydraulic shear cylinder control system and hydraulic shear - Google Patents
A kind of hydraulic shear cylinder control system and hydraulic shear Download PDFInfo
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- CN207093479U CN207093479U CN201721129998.0U CN201721129998U CN207093479U CN 207093479 U CN207093479 U CN 207093479U CN 201721129998 U CN201721129998 U CN 201721129998U CN 207093479 U CN207093479 U CN 207093479U
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- hydraulic shear
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Abstract
It the utility model is related to a kind of hydraulic shear cylinder control system,Including oil pump and oil cylinder,The oil pump is connected with oil cylinder by valve group,The valve group includes reversal valve,Separator and pile-up valve,The oil pump is connected with reversal valve,The reversal valve is connected with the separator simultaneously,The separator is also connected with the pile-up valve,The pile-up valve is connected with the mailbox simultaneously,The oil inlet end of the oil pump is connected with fuel tank,Oil outlet end is connected with the reversal valve,The oil cylinder includes rod chamber and rodless cavity,The oil-out of the reversal valve connects with the oil inlet of the separator,The oil-out of the separator includes the first oil-out and the second oil-out,First oil-out is connected by rodless cavity of the oil pipe respectively with two symmetrically arranged oil cylinders,Second oil-out is connected by pile-up valve with the rod chamber of the oil cylinder respectively,Operating efficiency is higher,Further relate to a kind of hydraulic shear for including above-mentioned control system.
Description
Technical field
A kind of hydraulic shear cylinder control system and hydraulic shear are the utility model is related to, belongs to Fluid-transmission and hydraulic control
Technical field.
Background technology
At present the forcible entry for being mainly used in building, fire-fighting and rescue, concrete and steel are cut using relatively broad double oil cylinder hydraulics
The fields such as the cutting of structure.In order to ensure the broken and shear ability of hydraulic shear high intensity, the oil cylinder volume of hydraulic shear is all very big,
So hydraulic shear completes the longer time that moving process needs, operating efficiency is not high.But in actual use, hydraulic shear
During completing single closure operation, there is longer one section to be in process non-loaded or that load is small；How hydraulic shear is accelerated to exist
Non-loaded or oil cylinder during load is small closing speed, so as to the overall operating efficiency for improving hydraulic shear, turns into and compels at present
It is essential the problem of to be solved.
Utility model content
The utility model is directed to above-mentioned the deficiencies in the prior art, there is provided a kind of high hydraulic shear oil of operating efficiency
Cylinder control system.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：A kind of hydraulic shear cylinder control system, bag
Power unit and execution unit are included, the power unit is connected with execution unit by valve group, and the valve group includes reversal valve, divided
Oily device and pile-up valve, the power unit are connected with reversal valve, and the reversal valve is connected with the separator simultaneously, described point of oil
Device is also connected with the pile-up valve, and the pile-up valve is connected with the execution unit simultaneously.
Further, the power unit is oil pump, and the oil inlet end of the oil pump is connected with fuel tank, oil outlet end and the commutation
Valve connects；
The execution unit is two symmetrically arranged oil cylinders, and the oil cylinder includes rod chamber and rodless cavity.
Further, the reversal valve is three position four-way directional control valve.
Further, the oil-out of the three position four-way directional control valve connects with the oil inlet of the separator, the separator
Oil-out include the first oil-out and the second oil-out, first oil-out is symmetrically arranged with two respectively by oil pipe
The rodless cavity of the oil cylinder is connected, and second oil-out is connected by pile-up valve with the rod chamber of the oil cylinder respectively.
Further, the pile-up valve includes balanced valve and check valve, and first oil-out connects with the oil cylinder rodless cavity
Connect；
Second oil-out is connected by balanced valve with cylinder rod chamber；
The cylinder rod chamber is also connected with one-way valve inlet end, and one-way valved outlet end is connected with the oil cylinder rodless cavity.
Further, the balanced valve includes valve port, cylinder ports and pilot port, the valve port distinguish second oil-out and
The check valve connection, the cylinder ports are connected with the cylinder rod chamber, and the pilot port is connected with the oil cylinder rodless cavity；
The valve port is connected with the check valve, forms K1 oil circuits, and the pilot port is connected to form K2 oil circuits with the oil cylinder rodless cavity.
When clip closure (load is big) state：Hydraulic oil is directly entered oil cylinder rodless cavity from the first oil-out, and oil pressure promotes
Piston movement, because the lateral load of cylinder rod chamber one is big, cylinder rod chamber side oil pressure is caused to gradually rise, when oil pressure is more than balance
During the setting pilot Opening pressure of valve, oil pressure opens the reverse pilot oil circuit of balanced valve, while oil pressure is by controlling K1 oil circuits to make
Closed check valve, therefore the hydraulic oil of cylinder rod chamber side can only enter oil return box by the reverse oil circuit of pilot of balanced valve, it is complete
The action opened into whole oil cylinder.
When clip closure (non-loaded or load is small) state, hydraulic oil is directly entered oil cylinder rodless cavity from the first oil-out,
Oil pressure promotes piston movement, and because cylinder rod chamber side is non-loaded or load is small, cylinder rod chamber side oil pressure is less than balance
The setting pilot Opening pressure of valve, therefore the low pressure oil in cylinder rod chamber directly enters oil cylinder rodless intracavitary by check valve, oil
Cylinder is accelerated to open speed, completes the action that whole oil cylinder opens, realizes the raising of operating efficiency；
When the clip of hydraulic shear needs to open, the hydraulic oil of the second oil-out outflow is by controlling K1 oil circuits to make check valve
Close, hydraulic oil can only enter cylinder rod chamber by balanced valve (free flow direction), promote piston movement, oil cylinder rodless intracavitary
Low pressure oil fuel tank is flowed back to by the first oil-out.
The beneficial effect of cylinder control system is in the utility model：When clip closure (non-loaded or load small) state,
Hydraulic oil is directly entered oil cylinder rodless cavity from the first oil-out, and oil pressure promotes piston movement, because cylinder rod chamber side is without negative
Carry or load small, cylinder rod chamber side oil pressure is less than the setting pilot Opening pressure of balanced valve, therefore low in cylinder rod chamber
Force feed directly enters oil cylinder rodless intracavitary by check valve, and oil cylinder is accelerated to open speed, complete whole oil cylinder opening (it is non-loaded or
Load small state) action, realize the raising of operating efficiency.
The invention further relates to a kind of hydraulic shear for including above-mentioned cylinder control system, operating efficiency are high.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of pile-up valve in the utility model；
Fig. 3 is the action schematic diagram in hydraulic shear jaw mouth open configuration；
Fig. 4 is the action schematic diagram that (heavy load) state is closed in hydraulic shear jaw mouth；
Fig. 5 is the action schematic diagram that (non-loaded or small load) state is closed in hydraulic shear jaw mouth；
In the accompanying drawings, the list of designations represented by each label is as follows：1st, three position four-way directional control valve, 2, separator, 2-
1st, the second oil-out, 2-2, the first oil-out, 3, pile-up valve, 3-1, balanced valve, 3-2, check valve, 3-11, valve port, 3-12, oil
Cylinder mouth, 3-13, pilot port, 4, oil cylinder, 4-1, rod chamber, 4-2, rodless cavity.
Embodiment
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
It is new, it is not intended to limit the scope of the utility model.
As Figure 1-Figure 2, a kind of hydraulic shear cylinder control system, including power unit and execution unit, it is described dynamic
Power unit is connected with execution unit by valve group, and the valve group includes reversal valve, separator 2 and pile-up valve 3, the power unit
It is connected with reversal valve, the reversal valve is connected with the separator simultaneously, and the separator is also connected with the pile-up valve, described
Pile-up valve is connected with the execution unit simultaneously.
The power unit is oil pump (being not drawn into figure), and oil inlet end and the fuel tank (being not drawn into figure) of the oil pump connect
Connect, oil outlet end is connected with the reversal valve；The execution unit is two symmetrically arranged oil cylinders, and the oil cylinder includes rod chamber
4-1 and rodless cavity 4-2.
The reversal valve is three position four-way directional control valve 1.
The oil-out of the three position four-way directional control valve 1 connects with the oil inlet of the separator 2, and the separator 2 goes out
It is symmetrical with two respectively by oil pipe that hydraulic fluid port includes the first oil-out 2-2 and the second oil-out 2-1, the first oil-out 2-2
The rodless cavity 4-2 of the oil cylinder set is connected, the second oil-out 2-1 having by pile-up valve 3 and the oil cylinder respectively
Rod cavity 4-1 is connected.
The pile-up valve 3 includes balanced valve 3-1 and check valve 3-2, the first oil-out 2-2 and the oil cylinder rodless cavity
4-2 connections；The second oil-out 2-1 is connected by balanced valve 3-1 with cylinder rod chamber 4-1；The cylinder rod chamber 4-1 is also
It is connected with check valve 3-2 arrival ends, the check valve 3-2 ports of export are connected with the oil cylinder rodless cavity 4-2.
Further, the balanced valve 3-1 includes valve port 3-11, cylinder ports 3-12 and pilot port 3-13, the valve port 3-11
The second oil-out 2-1 connects with the check valve 3-2 respectively, and the cylinder ports 3-12 and cylinder rod chamber 4-1 connects
Connect, the pilot port 3-13 is connected with the oil cylinder rodless cavity 4-2；The valve port 3-11 is connected with the check valve 3-2, is formed
K1 oil circuits, the pilot port 3-13 are connected to form K2 oil circuits with the oil cylinder rodless cavity 4-2.
As shown in figure 3, when the clip of hydraulic shear needs to open, the hydraulic oil of the second oil-out 2-1 outflows passes through control
K1 oil circuits close check valve 3-2, and hydraulic oil can only enter cylinder rod chamber 4-1 by balanced valve 3-1 (free flow direction), push away
Piston is moved, and the low pressure oil in oil cylinder rodless cavity 4-2 flows back to fuel tank by the first oil-out 2-2.
As shown in figure 4, when clip closure (heavy load) state：Hydraulic oil from the first oil-out 2-2 be directly entered oil cylinder without
Rod cavity 4-2, oil pressure promote piston movement, because the lateral loads of cylinder rod chamber 4-1 mono- are big, cause cylinder rod chamber 4-1 sides oil pressure
Gradually rise, when oil pressure is more than balanced valve 3-2 setting pilot Opening pressure, oil pressure makes the reverse pilot oil circuits of balanced valve 3-2
Open, while oil pressure, by controlling K1 oil circuits to close check valve 3-2, therefore the hydraulic oil of cylinder rod chamber 4-1 sides can only lead to
The overbalance valve 3-1 reverse oil circuit of pilot enters oil return box, completes the action that whole oil cylinder opens.
As shown in figure 5, when clip closure (non-loaded or small load) state, hydraulic oil directly enters from the first oil-out 2-2
Enter oil cylinder rodless cavity, oil pressure promotes piston movement, because cylinder rod chamber 4-1 sides are non-loaded or load small, cylinder rod chamber
4-1 sides oil pressure is less than balanced valve 3-1 setting pilot Opening pressure, therefore the low pressure oil in cylinder rod chamber 4-1 directly passes through
Check valve 3-2 enters in oil cylinder rodless cavity 4-2, and oil cylinder is accelerated to open speed, completes the action that whole oil cylinder opens, realizes work
Make the raising of efficiency.
The invention further relates to a kind of hydraulic shear using above-mentioned cylinder control system, operating efficiency are higher.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (7)
1. a kind of hydraulic shear cylinder control system, including power unit and execution unit, the power unit and execution unit
Connected by valve group, it is characterised in that the valve group includes reversal valve, separator and pile-up valve, the power unit and commutation
Valve is connected, and the reversal valve is connected with the separator simultaneously, and the separator is also connected with the pile-up valve, the pile-up valve
It is connected simultaneously with the execution unit.
2. hydraulic shear cylinder control system according to claim 1, it is characterised in that the power unit is oil pump,
The oil inlet end of the oil pump is connected with fuel tank, and oil outlet end is connected with the reversal valve；
The execution unit is two symmetrically arranged oil cylinders, and the oil cylinder includes rod chamber and rodless cavity.
3. hydraulic shear cylinder control system according to claim 2, it is characterised in that the reversal valve is 3-position 4-way
Reversal valve.
4. hydraulic shear cylinder control system according to claim 3, it is characterised in that the three position four-way directional control valve
Oil-out connects with the oil inlet of the separator, and the oil-out of the separator includes the first oil-out and the second oil-out,
First oil-out is connected by rodless cavity of the oil pipe respectively with two symmetrically arranged oil cylinders, second oil-out
It is connected respectively by pile-up valve with the rod chamber of the oil cylinder.
5. hydraulic shear cylinder control system according to claim 4, it is characterised in that the pile-up valve includes balanced valve
And check valve, first oil-out are connected with the oil cylinder rodless cavity；
Second oil-out is connected by balanced valve with cylinder rod chamber；
The cylinder rod chamber is also connected with one-way valve inlet end, and one-way valved outlet end is connected with the oil cylinder rodless cavity.
6. hydraulic shear cylinder control system according to claim 5, it is characterised in that the balanced valve include valve port,
Cylinder ports and pilot port, the valve port are distinguished second oil-out and connected with the check valve, the cylinder ports and the oil
Cylinder rod chamber is connected, and the pilot port is connected with the oil cylinder rodless cavity.
7. a kind of hydraulic shear, including cylinder control system, it is characterised in that the cylinder control system is that claim 1-6 appoints
Cylinder control system described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721129998.0U CN207093479U (en) | 2017-09-05 | 2017-09-05 | A kind of hydraulic shear cylinder control system and hydraulic shear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721129998.0U CN207093479U (en) | 2017-09-05 | 2017-09-05 | A kind of hydraulic shear cylinder control system and hydraulic shear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207093479U true CN207093479U (en) | 2018-03-13 |
Family
ID=61539096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721129998.0U Active CN207093479U (en) | 2017-09-05 | 2017-09-05 | A kind of hydraulic shear cylinder control system and hydraulic shear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207093479U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114352592A (en) * | 2022-01-24 | 2022-04-15 | 三一重机有限公司 | Hydraulic control system and working machine |
-
2017
- 2017-09-05 CN CN201721129998.0U patent/CN207093479U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114352592A (en) * | 2022-01-24 | 2022-04-15 | 三一重机有限公司 | Hydraulic control system and working machine |
| CN114352592B (en) * | 2022-01-24 | 2023-09-22 | 三一重机有限公司 | Hydraulic control system and working machine |
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