CN209228745U - A kind of binary channels delivery valve seat for overloading protector - Google Patents
A kind of binary channels delivery valve seat for overloading protector Download PDFInfo
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- CN209228745U CN209228745U CN201822026346.5U CN201822026346U CN209228745U CN 209228745 U CN209228745 U CN 209228745U CN 201822026346 U CN201822026346 U CN 201822026346U CN 209228745 U CN209228745 U CN 209228745U
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Abstract
The utility model provides a kind of binary channels delivery valve seat for overloading protector, it is related to punching machine technical field, a kind of binary channels delivery valve seat for overloading protector, the overloading protector includes the cylinder block successively combined, cylinder body, oil pressure seat and unload wedge, set on the air driven pump of the cylinder block and cylinder interior, oil sucting valve inside oil pressure seat, delivery valve and corresponding oil pressure suction inlet, oil pressure delivery outlet, set on the oil drain valve and bleed outlet unloaded inside wedge, unbalanced-loading preventing spool there are two being set in the oil pressure seat, the delivery valve seat includes two delivery valves for being respectively arranged on the oil sucting valve two sides, two valve seats being connect respectively with two delivery valves, each delivery valve passes through oil pipeline and is connected respectively with described two valve seats.The utility model uses two oil pressure valve seats, forms binary channels unbalanced-loading preventing structure, overloading protector can be made to meet the double-crankshaft punching machine of large-tonnage (200t or more), have the characteristics that stability is preferable.
Description
Technical field
The utility model relates to punching machine overload protection more particularly to a kind of twin channel outlet oil valves for overloading protector
Seat.
Background technique
Oil pump overload is when typically occur in winter low temperature, after Wind turbines defect is shut down for a long time temperature reduction compared with
More, oil viscosity addition, heavier loads when forming pump start cause Oil pump electrical machinery to overload.Second the reason is that some use year
Longer unit is limited, Oil pump electrical machinery output shaft oil sealing aging causes oil bad into connecting terminal box formation termination contact, three-phase
The phenomenon that oil pump overloads, severeer situation is presented in current imbalance, and oil even can largely enter Oil pump electrical machinery winding, destroys
Winding air gap forms apparatus overload.Oil sealing should be replaced after above-mentioned condition is presented, cleans connecting terminal box and machine winding, and add
From the beginning restore operating after temperature is uninteresting.
Excess load protection device for oil pump makes to install and use on punching machine, to the excess load oil inside detection sliding block oil hydraulic cylinder
Pressure pressure, when overload situations occur when, quickly supply the service pressure of oil cylinder, can eliminate punching machine in punching course because
Pressure is generated when oil temperature rises rises suffered influence.
Current overloading protector generally only apply in 160t uniaxial punching machine below by limit, but in large-tonnage twin shaft punching machine
Protection on there is missing because big in punching machine tonnage, when oil pressure is big, the case where being easy to appear unbalance loading, not only influences to protect
Shield can also damage protective device, therefore the overloading protector of structure type has not obviously been suitable for large-tonnage punching machine at present.
Based on this, the applicant specializes in this, develops a kind of twin channel outlet for overloading protector
Thus oil valve seat, this case generate.
Utility model content
In order to solve drawbacks described above existing in the prior art, the utility model provides a kind of for overloading protector
Binary channels delivery valve seat, for large-tonnage double-crankshaft punching machine use, for have unbalanced-loading preventing spool overloading protector, tool
Have the characteristics that stability is preferable.
To achieve the goals above, the technical solution that the utility model is taken is as follows:
A kind of binary channels delivery valve seat for overloading protector, the overloading protector include the gas successively combined
Cylinder seat, cylinder body, oil pressure seat and unload wedge, the air driven pump set on the cylinder block and cylinder interior, the suction inside oil pressure seat
Oil valve, delivery valve and corresponding oil pressure suction inlet, oil pressure delivery outlet, set on the oil drain valve and bleed outlet unloaded inside wedge, institute
State and set in oil pressure seat there are two unbalanced-loading preventing spool, the delivery valve seat include be respectively arranged on two of the oil sucting valve two sides it is fuel-displaced
Valve, two valve seats being connect respectively with two delivery valves, each delivery valve pass through oil pipeline respectively with it is described two
Valve seat is connected.
Preferably, the unbalanced-loading preventing spool includes steel ball and valve block, steel ball is located at outside, and valve block is located inside.
Preferably, being equipped with two oil pipelines in each valve seat respectively leads to the delivery valve and unbalanced-loading preventing valve
Core.
Working principle of the utility model is:
Pneumatic reversing principle: gas source is connected, air pressure is by air inlet joint chair, into the chamber one of cylinder block, since air pressure is made
With, push Reversing valve plate contact envelope pressure with scavenging air valve so that air pressure can only past cylinder block there are fabrication hole push, push simultaneously
Air rammer moves right, and air rammer drives pneumatic piston rod, when the small head end of pneumatic piston rod is detached from reversal valve, Reversing valve plate
When, the chamber (chamber two) that gas source air pressure is contacted from original pneumatic piston rod with reversal valve enters chamber three, due to reversing sleeve
It is equipped with venthole, therefore the chamber tee joint of chamber two and reversal valve and reversing sleeve composition, to push reversal valve to the right
Movement, after withstanding Reversing valve plate, separated with scavenging air valve so that Reversing valve plate contact with reversal valve seal press, while scavenging air valve with change
To valve group at chamber four (push chamber) air pressure through cylinder block there are fabrication hole be vented, what steel ball and reversal valve formed
Also there are air pressures in chamber two and chamber three (commutation chamber), push chamber without pressure at this time, pneumatic living due to the reversed elastic force of spring
Stopper rod moves downward reset, when pneumatic piston rod being driven to move downward shock steel ball, so that the air pressure of commutation chamber is zero, commutation
Valve commutates again, when gas source air pressure pushes Reversing valve plate and air rammer again, so that piston rod or so shuttling movement.
Anti- bias overdrive principle: piston motion starts, and oil sucting valve steel ball, which is opened, is pumped into oil, when piston rod moves right, two
Side delivery valve steel ball is opened, and is entered in the delivery valve seat of two sides by oil circuit, two sides are fuel-displaced；Delivery valve seat and each point of two-way, oil
On the one hand pressure enters punching apparatus to be protected by oil pressure delivery outlet, on the other hand enter unbalanced-loading preventing spool, unbalanced-loading preventing spool
Interior steel ball is opened, and oil pressure enters in main valve, pushes main valve, and the linkage of release piston is detached from switch lever and travel switch, contact
It is powered, opens protection.
In the initial state, the valve block in unbalanced-loading preventing spool is in closed state, and the steel ball in unbalanced-loading preventing spool is in freely
Sliding mode is without determining position.When the punching apparatus that the unbalance loading mechanism of wherein side is connected breaks down, oil pressure is increased, and two
Side delivery valve oil pressure generates deviation, and due to oily differential pressure action, oil pressure pushes the steel ball top of the side unbalanced-loading preventing spool to valve block, makes original
This valve block in closed state is opened, and permeability enters internal oil pressure pipeline, so that internal oil pressure increases, to push the other side
The valve block of unbalanced-loading preventing spool opens permeability, and the steel ball of the side is pushed to slide in and out to closure oil sealing；When oil pressure reaches overload point
It is overloaded by discharge mechanism, overloads moment, since internal oil pressure declines, external oil pressure recoil pushes the side unbalanced-loading preventing spool
Steel ball disengages it and opens valve block, emptying release, to protect machinery equipment.
When oil pressure and air pressure keep balancing, oil pressure has pushed main valve one, spring and main valve two, and pushes up to main valve guide bush movement
Stop, while release piston is opened to the right by main valve plug, so that switch lever is detached from travel switch, travel switch contact is powered, opens
Open protection.
The utility model is able to achieve following technical effect:
(1) two oil pressure valve seats are used, binary channels unbalanced-loading preventing structure is formed, are protected for the overload with unbalanced-loading preventing spool
Device is protected, overloading protector can be made to meet the double-crankshaft punching machine of large-tonnage (200t or more), have the characteristics that stability is preferable, fill out
The demand for mending market, can not only protect punching apparatus, moreover it is possible to be hardly damaged protector itself.
(2) apparatus structure is simplified, and reduces the use of fragile part, convenient for disassembly and assembly, and maintenance is quick, pneumatic commutation movement
High stability, overload intensity is high, overloads receiving often.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure that the present embodiment is applied to overloading protector；
Fig. 2 is the top view that the present embodiment is applied to overloading protector；
Fig. 3 is the main view that the present embodiment is applied to overloading protector.
Mark explanation: air driving reversing device 1, pneumatic control valve seat 11, reversing sleeve 12, reversal valve 13, scavenging air valve 14 change
To valve block 15, steel ball 16, air rammer 21, piston rod 22, piston rod microcephaly 23, piston pad 24, air inlet joint chair 31, gas connects 32,
Pneumatics entrance 33, silencing cotton 34, air cylinder base 35, reset spring 36, chamber 1, chamber 2 42, chamber 3 43, chamber four
44, oil sucting valve 5, oil suction valve guide 51, delivery valve 6, oil pipeline 61, oil pressure delivery outlet 62, unbalanced-loading preventing spool 71, valve seat 72,
Valve block 73, oil drain valve 8, main valve 1, main valve 2 82, spring 83, main valve envelope 84, main valve guide sleeve 85, main valve plug 86, release piston
87, compression spring 88, regulator bolts 89, travel switch 91, switch lever 92, AB Air Bleed valve 93, constant pressure valve 94, steel ball 95, gas
Cylinder seat A, cylinder body B, oil pressure seat C, unload wedge D.
Specific embodiment
In order to make the attainable technical effect of technological means and its institute of the utility model, more perfect take off can be become apparent from
Dew, hereby provides one embodiment, and be described in detail as follows in conjunction with attached drawing:
As shown in Figure 1-3, overloading protector includes the cylinder block A successively combined, cylinder body B, oil pressure seat C in the present embodiment
With unload wedge D, the air driven pump inside cylinder block A and cylinder body B, the oil sucting valve 5 in oil pressure seat C, delivery valve 6 and phase
The oil pressure suction inlet answered, oil pressure delivery outlet 62, set on the oil drain valve 8 unloaded in wedge D and corresponding bleed outlet, set on unloading wedge D
Interior release piston 87, travel switch electric wiring and pneumatics entrance 33, there are two delivery valve 6 is set.
A kind of binary channels delivery valve seat for overloading protector of the present embodiment, including it is respectively arranged on oil sucting valve two sides
Two delivery valves, two valve seats being connect respectively with two delivery valves, each delivery valve passes through oil pipeline respectively with two
A valve seat is connected.
Deviation load prevention apparatus includes two unbalanced-loading preventing spools 71 and two valve seats 72, and two unbalanced-loading preventing spools 71 are set to oil pressure seat
It is connect respectively with two valve seats 72 inside C and by oil pipeline 61, two valve seats 72 are fuel-displaced by oil pipeline 61 and two
Valve 6 connects.Two valve seats 72 are connect by oil pipeline 61 with two delivery valves 6 respectively.
It is equipped with two oil pipelines 61 in valve seat 72 and respectively leads to delivery valve 6 and unbalanced-loading preventing spool 71.Two unbalanced-loading preventings
Spool 71 is connect by oil pipeline 61 with oil drain valve 8.
Unbalanced-loading preventing spool 71 includes steel ball 95 and valve block 73, and steel ball 95 is located at outside, and valve block 73 is located inside.
Air driven pump includes the air rammer 21 being set in cylinder body B, the air driving reversing device 1 in cylinder block A, Yi Jiqi
The piston rod 22 that middle one end is movably installed in air driving reversing device 1 and links with piston 21,22 other end of piston rod, which leads to, to be set
Oil pipeline 61 in oil pressure seat C.
Air driving reversing device 1 includes successively combining the pneumatic control valve seat 11 of installation, steel ball 16, reversing sleeve 12, commutation
Valve 13, scavenging air valve 14 and Reversing valve plate 15, pneumatic control valve seat 11 are fixed on inside cylinder block A, and reversing sleeve 12 is installed on gas
In dynamic regulating valve seat 11, reversal valve 13 is installed on pneumatic control valve seat 11 and is sheathed on reversing sleeve 12, and 14 sets of scavenging air valve
On reversal valve 13, Reversing valve plate 15 is sheathed on reversal valve 13, and steel ball 16 is installed in reversing sleeve 12, piston rod 22 1
End is movably installed in reversing sleeve 12, and cylinder block A is equipped with pneumatics entrance 33.
Oil drain valve 8 includes main valve 1, main valve 2 82, the main valve plug 86 cooperated with main valve 2 82, is fixed on and unloads in wedge D
Main valve guide sleeve 85 and the spring 83 between main valve 1 and main valve 2 82；Main valve 1 is movably installed in main valve and leads
Between set 85 and main valve 2 82.Release piston 87 and main valve plug 86 contradict.It unloads and is fixed in wedge D and the cooperation of main valve 1
Main valve envelope 84.It unloads in wedge D and is contradicted by the compression spring 88 of strength and release piston 87, and be equipped with regulator bolts 89.Stroke
Switching electric wiring includes travel switch 91, travel switch contact and switch lever 92, and switch lever 92 is installed on release piston 87.
AB Air Bleed valve 93 and constant pressure valve 94 are additionally provided at the top of oil pressure seat C.
The above content is combination preferred embodiments of the present invention to further detailed made by provided technical solution
Describe in detail bright, and it cannot be said that the utility model specific implementation is confined to these above-mentioned explanations, technology affiliated for the utility model
For the those of ordinary skill in field, without departing from the concept of the premise utility, several simple deductions can also be made
Or replacement, it all shall be regarded as belonging to the protection scope of the utility model.
Claims (3)
1. a kind of binary channels delivery valve seat for overloading protector, the overloading protector include the cylinder successively combined
Seat, cylinder body, oil pressure seat and unload wedge, the air driven pump set on the cylinder block and cylinder interior, the oil suction inside oil pressure seat
Valve, delivery valve and corresponding oil pressure suction inlet, oil pressure delivery outlet, set on the oil drain valve and bleed outlet unloaded inside wedge, it is special
Sign is: is set in the oil pressure seat there are two unbalanced-loading preventing spool, the delivery valve seat includes being respectively arranged on the oil sucting valve two sides
Two delivery valves, two valve seats being connect respectively with two delivery valves, each delivery valve passes through oil pipeline and distinguishes
It is connected with described two valve seats.
2. a kind of binary channels delivery valve seat for overloading protector as described in claim 1, it is characterised in that: described anti-
Unbalance loading spool includes steel ball and valve block, and steel ball is located at outside, and valve block is located inside.
3. a kind of binary channels delivery valve seat for overloading protector as described in claim 1, it is characterised in that: Mei Gesuo
It states and is equipped with two oil pipelines in valve seat and respectively leads to the delivery valve and unbalanced-loading preventing spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822026346.5U CN209228745U (en) | 2018-12-04 | 2018-12-04 | A kind of binary channels delivery valve seat for overloading protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822026346.5U CN209228745U (en) | 2018-12-04 | 2018-12-04 | A kind of binary channels delivery valve seat for overloading protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209228745U true CN209228745U (en) | 2019-08-09 |
Family
ID=67506150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822026346.5U Active CN209228745U (en) | 2018-12-04 | 2018-12-04 | A kind of binary channels delivery valve seat for overloading protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209228745U (en) |
-
2018
- 2018-12-04 CN CN201822026346.5U patent/CN209228745U/en active Active
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