CN109396291A - Spring overloading protector - Google Patents
Spring overloading protector Download PDFInfo
- Publication number
- CN109396291A CN109396291A CN201811471210.3A CN201811471210A CN109396291A CN 109396291 A CN109396291 A CN 109396291A CN 201811471210 A CN201811471210 A CN 201811471210A CN 109396291 A CN109396291 A CN 109396291A
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- China
- Prior art keywords
- valve
- oil pressure
- oil
- air
- seat
- 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.)
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- 230000001012 protector Effects 0.000 title claims abstract description 26
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 12
- 230000002000 scavenging effect Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000004080 punching Methods 0.000 abstract description 19
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000030279 gene silencing Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000004141 microcephaly Diseases 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention provides spring overloading protectors; it is related to punching machine overload protection technical field; including successively combine cylinder block, cylinder body, oil pressure seat and unload wedge; the cylinder block and cylinder interior are equipped with air driven pump; the air driven pump includes set on the intracorporal air rammer of the cylinder, the air driving reversing device in the cylinder block and wherein one end is movably installed in the air driving reversing device and pneumatic piston rod with air rammer linkage, the pneumatic piston rod other end lead to the oil pipeline in the oil pressure seat；It is equipped with oil pressure suction inlet, oil pressure delivery outlet and the bleed outlet being connected to the oil pipeline in the oil pressure seat, is equipped with oil drain valve above the bleed outlet；It further include set on release piston, travel switch electric wiring and the compression spring unloaded in wedge.Protector overall stability is good, the service life is long, pump head oil pump capacity is big, and pump head design is simple, and components are not easy to be lost, and stability is strong, and flow is full, and assembly is quick, easy to maintenance.
Description
Technical field
The present invention relates to punching machine press machine overload protection more particularly to spring overloading protectors.
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 overload protection device haves the shortcomings that stability is not high, the service life is short, pump head oil pump capacity is few, and structure
Complexity, easily worn part is more, processes many and diverse, maintenance difficult, mostly uses output one-way valve, and input is also check valve, and output is unidirectional
Mostly integral type can not repair, and can only all replace, result in waste of resources；And input check valve be it is split type, main part only leans on close
Envelope elastic tape is fixed, and is easily detached from and is lost when transport or branch mailbox are installed, and oil pressure delivery outlet is single, is not able to satisfy a variety of punching machines
The demand of equipment.
Based on this, the applicant specializes in this, develops spring overloading protector, thus this case produces
It is raw.
Summary of the invention
In order to solve drawbacks described above existing in the prior art, the present invention provides spring overloading protectors, have
The feature that stability is high, the service life is long, pump head oil pump capacity is big.
To achieve the goals above, the technical solution adopted by the present invention is as follows:
Spring overloading protector, including successively combine cylinder block, cylinder body, oil pressure seat and unload wedge, the cylinder block and
Cylinder interior is equipped with air driven pump, and the air driven pump includes set on the intracorporal air rammer of the cylinder, in the cylinder block
Air driving reversing device and wherein one end are movably installed in the pneumatic work in the air driving reversing device and with air rammer linkage
Stopper rod, the pneumatic piston rod other end lead to the oil pipeline in the oil pressure seat；It is equipped with and institute in the oil pressure seat
Oil pressure suction inlet, oil pressure delivery outlet and the bleed outlet of oil pipeline connection are stated, is equipped with oil drain valve above the bleed outlet；Further include
Set on the release piston, travel switch electric wiring and compression spring unloaded in wedge.
Preferably, the air driving reversing device includes successively combining pneumatic control valve seat, steel ball, the reversing cover of installation
Cylinder, reversal valve, scavenging air valve and Reversing valve plate, the pneumatic control valve seat are fixed on inside cylinder block, the reversing sleeve installation
In in pneumatic control valve seat, the reversal valve is installed on pneumatic control valve seat and is sheathed on the reversing sleeve, described to change
Air valve is sheathed on reversal valve, and the Reversing valve plate is sheathed on the reversal valve.
Preferably, the cylinder interior is equipped with the reset spring contacted with air rammer.
Preferably, being equipped with inlet valve, the oil between oil pressure suction inlet and oil pressure delivery outlet above the oil pressure suction inlet
Delivery valve is equipped at pressure pipe road.
Preferably, the oil drain valve includes being fixedly mounted on to unload unloading pressing sleeve, being movably installed in and unload in pressing sleeve in wedge
Emptying spool and with emptying spool cooperation main valve plug.
Preferably, the wedge that unloads is equipped with regulator bolts.It can satisfy the tonnage of different punching machines, carry out pressure regulation.
Preferably, described unload is equipped with spacing, main valve plug limit activity in the spacing between pressing sleeve and main valve plug.
Preferably, the travel switch electric wiring includes travel switch, travel switch contact and switch lever, the peace
Loaded on the release piston.
Preferably, oil pressure seat side is equipped with oil pressure delivery outlet.The oil pressure delivery outlet of oil pressure seat two sides, with punching machine
The connection of base equipment, one of any selection or Quan Xuan, the oil pressure delivery outlet of oil pressure seat bottom are device to test according to demand
Punching apparatus can also be reequiped or be connected to the instrument connection for extracting data as oil pressure delivery outlet under particular surroundings requirement.
Preferably, being additionally provided with AB Air Bleed valve at the top of the oil pressure seat.
The working principle of the invention: pneumatic reversing principle: gas source is connected, air pressure is by air inlet joint chair, into cylinder block
Chamber one is pushed Reversing valve plate contact envelope with scavenging air valve and is pressed due to gas pressure so that air pressure can only past cylinder block there are work
Skill hole pushes, while air rammer being pushed to move right, and air rammer drives pneumatic piston rod, when the small head end of pneumatic piston rod is de-
When from reversal valve, Reversing valve plate, the chamber (chamber two) that gas source air pressure is contacted from original pneumatic piston rod with reversal valve enters chamber
Room three, since reversing sleeve is equipped with the chamber tee joint of venthole, chamber two and reversal valve and reversing sleeve composition, from
And reversal valve is pushed to move right, it after withstanding Reversing valve plate, is separated with scavenging air valve, so that Reversing valve plate contacts envelope with reversal valve
Pressure, at the same the air pressure of chamber four that scavenging air valve is formed with reversal valve (promotion chamber) through cylinder block there are fabrication hole be vented,
Also there are air pressures in the chamber two and chamber three (commutation chamber) of steel ball and reversal valve composition, push chamber without pressure at this time, due to
The reversed elastic force of spring, pneumatic piston rod move downward reset, when pneumatic piston rod being driven to move downward shock steel ball, so that commutation
The air pressure of chamber is zero, and reversal valve commutates again, when gas source air pressure pushes Reversing valve plate and air rammer again, so that shaft is left
Right shuttling movement.
Spring overload protection principle: air rammer move work while, inlet valve pneumatic piston rod to the left
When movement, steel ball is opened, and is pumped into, and pneumatic piston rod moves right inlet valve closure, and delivery valve is opened, and oiling, which enters, to be protected
It protects in equipment, implements circulation action repeatedly, constantly oil pumping boosting, when " air pressure × pneumatic piston area " and " oil pressure × roofbolt face
Product " keeps balance, and oil pressure has pushed main valve plug and emptying spool, and top stops to pressing sleeve movement is unloaded, while release piston is by emptying
Spool opens to the right, so that switch lever is detached from travel switch, travel switch contact is powered, and opens protection.
When machinery equipment generates overload, since oil pressure increases, moment pushes emptying spool, so that emptying spool and master
Spool disengage, oil liquid from main valve plug pass through return port, oil inlet and oil return case, due to there is no oil pressure under the reaction force of air pressure, release
Piston moves downward reset, while driving switch lever, opens travel switch contact, and disconnecting circuit stops machinery equipment.Punching machine
For equipment in punching press, mold or punching machine itself break down or breakage, so that oil pressure moment is more than the set overload of overload pump
Pressure generates pressure difference, therefore moment can push emptying spool, prevents second of the breakage of punching apparatus or mold.
The present invention is able to achieve following technical effect:
(1) protector overall stability is good, the service life is long, pump head oil pump capacity is big, and pump head design is simple, and components are not easy to be lost, surely
Qualitative strong, flow is full, and assembly is quick, easy to maintenance.
(2) foundation that spring overloading protector is adjusted using regulator bolts as pressure, sets according to different needs
Determine overload pressure, the punching machine adjustment for meeting different tonnages uses, and can satisfy uniaxial 160t punching machine and following tonnage；And it adjusts
Overload pressure is convenient and simple.
(3) envelope pressure is not likely to produce fatigue compared to soft envelope pressure part using hard envelope inside protector.
(4) 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.
(5) spring can arbitrarily be adjusted under the pressure that punching apparatus can bear as desired by regulator bolts
Pressure, the size of the born overload pressure of spring overloading protector, the limitation of source gas of not being bullied pressure.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the present embodiment spring overloading protector；
Fig. 2 is the cross-sectional view of air driving reversing device in the present embodiment spring 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, chamber 1, chamber 2 42, chamber 3 43, chamber 4 44, reset spring 51, fuel-displaced nut
52, delivery valve 53, oil pressure suction inlet 61, oil pressure delivery outlet 62, bleed outlet 63, inlet valve 64, steel ball 65, oil pipeline 66, master
Spool 71, emptying spool 72 unload pressing sleeve 73, release piston 74, spacing 75, travel switch 81, switch lever 82, travel switch contact
83, regulator bolts 9, compression spring 10, cylinder block A, cylinder body B, oil pressure seat C unloads wedge D.
Specific embodiment
In order to make the attainable technical effect of technological means of the invention and its institute, more perfect exposure can be become apparent from,
One embodiment is hereby provided, and is described in detail as follows in conjunction with attached drawing:
As illustrated in fig. 1 and 2, the present embodiment spring overloading protector, including cylinder block A, the cylinder body B, oil pressure successively combined
Seat C and unload wedge D, be equipped with air driven pump inside cylinder block A and cylinder body B, air driven pump include air rammer 21 in cylinder body B,
Air driving reversing device 1 in cylinder block A and wherein one end be movably installed in air driving reversing device 1 and with it is pneumatic living
The piston rod 22 of 21 linkage of plug, 22 other end of piston rod lead to the oil pipeline 66 in oil pressure seat C；It is equipped in oil pressure seat C
Oil pressure suction inlet 61, oil pressure delivery outlet 62 and the bleed outlet 63 being connected to oil pipeline 66 are equipped with oil drain valve above bleed outlet 63；
It further include set on release piston 74,81 electric wiring of travel switch and the compression spring unloaded in wedge D.
Air driving reversing device 1 includes successively combining the pneumatic control valve seat 11 of installation, steel ball 16, reversing sleeve 13, commutation
Valve 13, scavenging air valve and Reversing valve plate 15, pneumatic control valve seat 11 are fixed on inside cylinder block A, and reversing sleeve 13 is installed on pneumatically
In regulating valve seat 11, reversal valve 13 is installed on pneumatic control valve seat 11 and is sheathed on reversing sleeve 13, and scavenging air valve is sheathed on
On reversal valve 13, Reversing valve plate 15 is sheathed on reversal valve 13.
Pneumatic control valve seat 11 is equipped with through-hole close to the bottom of steel ball 16, and reversing sleeve 13 is installed on the wall of piston rod 22
It is even that several through-holes are distributed with.Through-hole or pneumatic control valve is distributed in the position that pneumatic control valve seat 11 is contacted with Reversing valve plate 15
Seat 11 is equipped with the through-hole extended to its bottom close to outer.
Cylinder block A connects 32, pneumatics entrance 33 by air inlet connecting 32 31, gas and connects gas source air pressure, and cylinder block A is equipped with row
The fabrication hole of gas.Cylinder block A is equipped with silencing cotton 34 close to the side of pneumatic control valve seat 11.
It is equipped with the reset spring 51 contacted with air rammer 21 in cylinder body B, is additionally provided with work between piston and reset spring 51
Choker block 24.22 other end of piston rod is equipped with fuel-displaced nut 52, and the bottom cylinder body B is equipped with inlet valve 64 and oil pressure suction inlet 61, into
One steel ball 65 is installed between oil valve 64 and oil pressure suction inlet 61, delivery valve 53 is installed above inlet valve 64.Oil pressure suction inlet
61 tops are equipped with inlet valve 64, are equipped with delivery valve 53 at the oil pipeline 66 between oil pressure suction inlet 61 and oil pressure delivery outlet 62.
Oil drain valve includes being fixedly mounted on to unload unloading pressing sleeve 73, being movably installed in the oil drain valve unloaded in pressing sleeve 73 in wedge D
Core 72 and the main valve plug 71 cooperated with emptying spool 72.Wedge D is unloaded equipped with regulator bolts 9.It can satisfy different punching machines
Tonnage carries out pressure regulation.It unloads and is equipped with spacing 75, the limit activity in spacing 75 of main valve plug 71 between pressing sleeve 73 and main valve plug 71.It unloads
The side wedge D is additionally provided with oil pressure delivery outlet 62.The oil pressure delivery outlet 62 of the two sides oil pressure seat C, connect with punching machine base equipment, according to
It is the test that device to test extracts data that demand, which arbitrarily selects the oil pressure delivery outlet 62 of one of them or the bottom Quan Xuan, oil pressure seat C,
Punching apparatus can also be reequiped or be connected in hole as oil pressure delivery outlet 62 under particular surroundings requirement.81 electric wiring of travel switch
Including travel switch 81, travel switch contact 83 and switch lever 82, switch lever 82 is installed on release piston 74.The top oil pressure seat C
Portion is additionally provided with AB Air Bleed valve.
Air rammer 21 and pneumatics entrance 33 form chamber 1, and reversing sleeve 13, steel ball 16 and piston rod 22 form chamber
Room 2 42 forms chamber 3 43, reversal valve 13, pneumatic tune between reversal valve 13, reversing sleeve 13 and pneumatic control valve seat 11
It saves and forms chamber 4 44 between valve seat 11 and Reversing valve plate 15.
A fuel tank is also installed in protector bottom, and integral type facilitates oil pumping and emptying.Pneumatics opereating specification is 3-5kg/cm2,
It is common to set pressure as 190-400 g/cm2。
Pneumatic movement is with reversing principle: connecting gas source, air pressure is by air inlet connecting 32 31, into the chamber one of cylinder block A
41, due to gas pressure, push Reversing valve plate 15 contact envelope with scavenging air valve and press so that air pressure can only past cylinder block A there are work
Skill hole pushes, while air rammer 21 being pushed to move right, and air rammer 21 drives piston rod 22, when 23 end of piston rod microcephaly is de-
When from reversal valve 13, Reversing valve plate 15, chamber (chamber 2 42) that gas source air pressure is contacted from original piston rod 22 with reversal valve 13
Into chamber 3 43, since reversing sleeve 13 is equipped with venthole, chamber 2 42 and reversal valve 13 and 13 groups of reversing sleeve
At chamber 3 43 be connected to, so that reversal valve 13 be pushed to move right, after withstanding Reversing valve plate 15, separated with scavenging air valve so that
Reversing valve plate 15 contacts envelope pressure with reversal valve 13, while four 44(of chamber that scavenging air valve and reversal valve 13 form pushes chamber) gas
Pressure through cylinder block A there are fabrication hole be vented, chamber 2 42 and three 43(of chamber the commutation chamber that steel ball 65 and reversal valve 13 form
Room) interior also there are air pressures, push chamber without pressure at this time, and due to the reversed elastic force of spring, piston rod 22 moves downward reset, drives and lives
When stopper rod 22 moves downward shock steel ball 65, so that the air pressure of commutation chamber is zero, reversal valve 13 commutates again, and gas source air pressure is again
When secondary promotion Reversing valve plate 15 and air rammer 21, so that shaft or so shuttling movement.
Overload protection principle: while air rammer 21 moves work, inlet valve 64 is moved downward in piston rod 22
When, steel ball 65 is opened, and is pumped into, and piston rod 22 moves right the closure of inlet valve 64, and delivery valve 53 is opened, and oiling, which enters, to be protected
It protects in equipment, implements circulation action repeatedly, constantly oil pumping boosting, when 21 area of air pressure × air rammer and " oil pressure × roofbolt face
Product " keeps balance, and oil pressure has pushed main valve plug 71 and emptying spool 72, and top stops to the movement of pressing sleeve 73 is unloaded, while release piston
74 are opened to the right by emptying spool 72, so that switch lever 82 is detached from travel switch 81, travel switch contact 83 is powered, and open and protect
Shield.
When machinery equipment generates overload, since oil pressure increases, moment pushes emptying spool 72, so that emptying spool 72
It being disengaged with main valve plug 71, oil liquid flows back to fuel tank from main valve plug 71, due to there is no oil pressure under the reaction force of air pressure, release piston
74 move downward reset, while driving switch lever 82, open travel switch contact 83, disconnecting circuit stops machinery equipment.
The above content is combine the preferred embodiment of the present invention to made by provided technical solution further specifically
It is bright, and it cannot be said that the present invention specific implementation be confined to it is above-mentioned these explanation, for the common skill of the technical field of the invention
For art personnel, without departing from the inventive concept of the premise, a number of simple deductions or replacements can also be made, all should be considered as
It belongs to the scope of protection of the present invention.
Claims (10)
1. spring overloading protector, it is characterised in that: including successively combine cylinder block, cylinder body, oil pressure seat and unload wedge,
The cylinder block and cylinder interior are equipped with air driven pump, and the air driven pump includes set on the intracorporal air rammer of the cylinder, is set to institute
It states the air driving reversing device in cylinder block and wherein one end is movably installed in the air driving reversing device and and air rammer
The pneumatic piston rod of linkage, the pneumatic piston rod other end lead to the oil pipeline in the oil pressure seat；The oil pressure
It is equipped with oil pressure suction inlet, oil pressure delivery outlet and the bleed outlet being connected to the oil pipeline in seat, is equipped with above the bleed outlet
Oil drain valve；It further include set on release piston, travel switch electric wiring and the compression spring unloaded in wedge.
2. spring overloading protector as described in claim 1, it is characterised in that: the air driving reversing device includes successively
Combine pneumatic control valve seat, steel ball, reversing sleeve, reversal valve, scavenging air valve and the Reversing valve plate of installation, the pneumatic control valve seat
It is fixed on inside cylinder block, the reversing sleeve is installed in pneumatic control valve seat, and the reversal valve is installed on pneumatic control valve
It on seat and is sheathed on the reversing sleeve, the scavenging air valve is sheathed on reversal valve, and the Reversing valve plate is sheathed on described change
To on valve.
3. spring overloading protector as described in claim 1, it is characterised in that: the cylinder interior is equipped with lives with pneumatic
Fill in the reset spring of contact.
4. spring overloading protector as described in claim 1, it is characterised in that: be equipped with above the oil pressure suction inlet into
Oil valve is equipped with delivery valve at the oil pipeline between oil pressure suction inlet and oil pressure delivery outlet.
5. spring overloading protector as described in claim 1, it is characterised in that: the oil drain valve includes being fixedly mounted on
Unload unloading pressing sleeve, being movably installed in and unload the spool of the emptying in pressing sleeve and the main valve plug with the cooperation of emptying spool in wedge.
6. spring overloading protector as described in claim 1, it is characterised in that: the wedge that unloads is equipped with pressure regulation spiral shell
Bolt.
7. spring overloading protector as claimed in claim 5, it is characterised in that: described unload sets between pressing sleeve and main valve plug
There are spacing, main valve plug limit activity in the spacing.
8. spring overloading protector as described in claim 1, it is characterised in that: the travel switch electric wiring includes
Travel switch, travel switch contact and switch lever, the switch lever are installed on the release piston.
9. spring overloading protector as described in claim 1, it is characterised in that: it is defeated that oil pressure seat side is equipped with oil pressure
Outlet.
10. spring overloading protector as described in claim 1, it is characterised in that: be additionally provided with sky at the top of the oil pressure seat
Gas bleeder valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471210.3A CN109396291B (en) | 2018-12-04 | 2018-12-04 | Spring type overload protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471210.3A CN109396291B (en) | 2018-12-04 | 2018-12-04 | Spring type overload protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109396291A true CN109396291A (en) | 2019-03-01 |
| CN109396291B CN109396291B (en) | 2024-03-19 |
Family
ID=65457122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811471210.3A Active CN109396291B (en) | 2018-12-04 | 2018-12-04 | Spring type overload protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109396291B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01316575A (en) * | 1988-06-15 | 1989-12-21 | Konan Denki Kk | Overload safety valve |
| CN2748200Y (en) * | 2004-10-25 | 2005-12-28 | 洪宏明 | Overloading protection apparatus |
| CN2918830Y (en) * | 2005-10-25 | 2007-07-04 | 北京工商大学 | Stroke-regulating type controllable hydraulic overload protection device |
| CN104314885A (en) * | 2014-09-24 | 2015-01-28 | 杭震 | Hydraulic overload protecting device and pressing machine with hydraulic overload protecting device |
| CN107756868A (en) * | 2017-11-18 | 2018-03-06 | 浙江灿根智能科技有限公司 | Punch press combined type pump valve Overloading protection apparatus |
| CN207485764U (en) * | 2017-11-18 | 2018-06-12 | 浙江灿根智能科技有限公司 | For the air valve of Overloading protection apparatus |
| CN207485665U (en) * | 2017-11-18 | 2018-06-12 | 浙江灿根智能科技有限公司 | It is pumped for the pressure protection of Overloading protection apparatus |
| CN207486150U (en) * | 2017-11-18 | 2018-06-12 | 浙江灿根智能科技有限公司 | Overloading protection apparatus pressure protection valve |
| CN209223066U (en) * | 2018-12-04 | 2019-08-09 | 嵊州市元昊机械有限公司 | Spring overloading protector |
-
2018
- 2018-12-04 CN CN201811471210.3A patent/CN109396291B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01316575A (en) * | 1988-06-15 | 1989-12-21 | Konan Denki Kk | Overload safety valve |
| CN2748200Y (en) * | 2004-10-25 | 2005-12-28 | 洪宏明 | Overloading protection apparatus |
| CN2918830Y (en) * | 2005-10-25 | 2007-07-04 | 北京工商大学 | Stroke-regulating type controllable hydraulic overload protection device |
| CN104314885A (en) * | 2014-09-24 | 2015-01-28 | 杭震 | Hydraulic overload protecting device and pressing machine with hydraulic overload protecting device |
| CN107756868A (en) * | 2017-11-18 | 2018-03-06 | 浙江灿根智能科技有限公司 | Punch press combined type pump valve Overloading protection apparatus |
| CN207485764U (en) * | 2017-11-18 | 2018-06-12 | 浙江灿根智能科技有限公司 | For the air valve of Overloading protection apparatus |
| CN207485665U (en) * | 2017-11-18 | 2018-06-12 | 浙江灿根智能科技有限公司 | It is pumped for the pressure protection of Overloading protection apparatus |
| CN207486150U (en) * | 2017-11-18 | 2018-06-12 | 浙江灿根智能科技有限公司 | Overloading protection apparatus pressure protection valve |
| CN209223066U (en) * | 2018-12-04 | 2019-08-09 | 嵊州市元昊机械有限公司 | Spring overloading protector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109396291B (en) | 2024-03-19 |
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