CN102808916B - Hydraulic coupler over-temperature protection device and repairing method thereof - Google Patents
Hydraulic coupler over-temperature protection device and repairing method thereof Download PDFInfo
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- CN102808916B CN102808916B CN201210307447.4A CN201210307447A CN102808916B CN 102808916 B CN102808916 B CN 102808916B CN 201210307447 A CN201210307447 A CN 201210307447A CN 102808916 B CN102808916 B CN 102808916B
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- fusible
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- approach switch
- hydraulic couplers
- rod
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Abstract
The invention discloses a hydraulic coupler over-temperature protection device and a repairing method thereof. The hydraulic coupler over-temperature protection device comprises a fusible plug (2) and a proximity switch (3), wherein the proximity switch (3) is positioned on one side close to the fusible plug (2); the central axes of the proximity switch and the fusible plug (2) are coincided with each other during initial installation; the fusible plug (2) comprises a cylinder barrel, and a piston and a piston rod (5) which are positioned in the cylinder barrel; the cylinder barrel is partitioned into a rod-including cavity and a rod-free cavity by the piston; the rod-including cavity is communicated with a hydraulic oil cavity (1); the rod-including cavity is filled with fusible metal (6), and is provided with a channel through which a fused fusible metal flows out; when the fusible metal is filled into the rod-including cavity, the distance between piston rod (5) and the proximity switch (3) is larger than a detected distance; and after the fusible metal flows out by fusing, the distance between piston rod (5) and the proximity switch (3) is not greater than the detected distance. During repairing, the fused fusible plug (2) and a fusible alloy to be filled are heated, and the fusible alloy is fused into liquid and then is filled into the fusible plug (2); and after the fusible alloy is cooled and condensed, the device can be used once again.
Description
Technical field
The present invention relates to hydraulic couplers technical field, relate in particular to the over-temperature protection device of hydraulic couplers; The invention still further relates to the restorative procedure of hydraulic couplers over-temperature protection device.
Background technique
Hydraulic couplers is a kind of nonrigid coupling device taking liquid as working medium, claims again fluid coupling.The pump impeller of hydraulic couplers and airtight active chamber that can make liquid-circulating flow of turbine composition, pump impeller is contained on input shaft, and turbine cartridge is on output shaft.When the rotation of power engine (internal-combustion engine, motor etc.) band driven input shaft, liquid is centrifuged formula pump impeller and throws away.This high-speed liquid promotes turbine rotation after entering turbine, and the energy obtaining from pump impeller is passed to output shaft.Final liquid returns to pump impeller, forms flowing of going round and beginning again.By the blade of liquid and pump impeller, turbine, the interact variation of the generation moment of momentum carrys out transmitting torque to hydraulic couplers.Hydraulic couplers has the following advantages: between input shaft and output shaft, by liquid communication, do not have rigid joint between working component, can eliminate shock and vibration; Output speed is lower than input speed, and the speed discrepancy of diaxon increases with the increase of load; Overload protection performance and starting performance are good.The principle of hydraulic couplers has determined that hydraulic couplers has loss of velocity.Power loss becomes heat simultaneously, and hydraulic oil temperature is raise.On the other hand, hydraulic couplers is in the time of braking and overload, and its Maximum Torque can exceed rated torque, can cause working oil temperature sharply to raise, and when serious, causes that working oil catches fire, and even can damage hydraulic couplers.Traditional protective gear is that fusible plug is set on hydraulic couplers; in the time that the oil temperature in hydraulic couplers exceedes the alarm temperature of hydraulic couplers hydraulic oil; low-melting alloy in fusible plug just starts to melt; working oil is under the effect of centrifugal force; ejection from fusible plug; make active part and the secondary part of hydraulic couplers disconnect no longer transmitting torque; thereby ensure that the temperature of hydraulic couplers hydraulic oil is not higher than its maximum limit temperature; protection motor, Coupler and follower, avoid security incident.Obviously, there is following defect in this technological scheme: after each ejection, need to change fusible plug and hydraulic oil, near the hydraulic oil of ejection easily causes, pollute working zone, is difficult to cleaning, and the high-temperature liquid force feed of ejection is easily brought potential safety hazard.
Summary of the invention
In order to overcome aforementioned technical problem; the object of the present invention is to provide on the one hand a kind of over-temperature protection device of hydraulic couplers; in excess temperature hydraulic oil in guarantee hydraulic couplers is not ejected; realize and cut off power source; protection hydraulic couplers, and there is the installation can repaired, be easy to, inspection and maintenance.
In order to solve the problems of the technologies described above, the over-temperature protection device of hydraulic couplers provided by the invention, comprises and fixes or be detachably connected on the fusible plug being communicated with its hydraulic fluid chamber on hydraulic couplers, be connected to the approach switch on mounting bracket, the inductive head of described approach switch is positioned at a side of nearly described fusible plug, the inductive head of approach switch and the described fusible plug central axes in the time of initial installation, described fusible plug comprises the cylinder barrel being fixed on hydraulic couplers, be positioned at piston and the piston rod of cylinder barrel, described cylinder barrel is divided into rod chamber and rodless cavity by described piston, described rodless cavity is communicated with the hydraulic fluid chamber of hydraulic couplers, described rod chamber one end is provided with cylinder cap, cylinder cap center is provided with the axial bore passing for piston rod, in described rod chamber, insert melt temperature higher than hydraulic couplers hydraulic oil alarm temperature the fusible metal higher than hydraulic couplers hydraulic oil maximum limit temperature not, with the passage with the fusible metal outflow after the melting of making, when moving in described piston rod, while inserting fusible metal in rod chamber, distance between described piston rod and the inductive head of described approach switch is greater than the distance that detects of approach switch, when after the fusible metal melting in described rod chamber, described piston rod outwards shifts out under the hydraulic fluid pressure effect of hydraulic couplers, distance after shifting out and between the inductive head of approach switch is not more than the distance that detects of approach switch, thereby trigger approach switch action.Described alarm temperature is higher than the normal working temperature of hydraulic couplers hydraulic oil, and lower than hydraulic couplers hydraulic oil maximum limit temperature, is prone to fault in production and security incident in the time reaching maximum limit temperature.Hydraulic couplers is in running; if hydraulic fluid temperature exceedes after fusible metal melt temperature; the passage flowing out from fusible metal after fusible metal melting in fusible plug flows out; piston rod moves outward, and in the time that piston rod just rotates to the inductive head position to approach switch, inductive head detects oil temperature and exceeded normal working temperature; approach switch action; output signal, by the input power of control gear cutting-off liquid mechanical couple, thereby realizes the overheat protector to hydraulic couplers.
Further; for the ease of reclaiming fusible metal; severe or the higher place of environmental requirement that conforms, the passage that the fusible metal of the over-temperature protection device of hydraulic couplers provided by the invention flows out is also removably connected with the container of the fusible metal after splendid attire melting.
Further, the over-temperature protection device of hydraulic couplers provided by the invention, the distance between described approach switch and/or mounting bracket and described fusible plug is adjustable.
Further, the hydraulic fluid chamber end of the nearly hydraulic couplers of cylinder barrel of the over-temperature protection device of hydraulic couplers provided by the invention has the limiting stopper of limited piston bar maximum displacement.
On the other hand, the present invention also provides a kind of restorative procedure of the over-temperature protection device for aforementioned arbitrary hydraulic couplers.Can repair quickly and safely the over-temperature protection device of inefficacy.
In order to solve the problems of the technologies described above, the restorative procedure of hydraulic couplers over-temperature protection device provided by the invention, comprise the following steps: by the fusible plug having melted and low melting alloy heating to be filled, by remaining low melting alloy in fusible plug and low melting alloy fusing to be filled; The piston rod stretching out (5) is pressed into original state in cylinder barrel; The passage that fusible metal from fusible plug flows out is inserted liquid low melting alloy in rod chamber; After low melting alloy cooled and solidified, can reuse.
The invention has the beneficial effects as follows: fusible plug is divided into rod chamber and rodless cavity by piston rod by cylinder barrel, rodless cavity is communicated with the hydraulic fluid chamber of hydraulic couplers, in rod chamber, be filled with melt temperature higher than hydraulic couplers hydraulic oil alarm temperature the fusible metal higher than hydraulic couplers hydraulic oil maximum limit temperature not, with the passage with the fusible metal outflow after the melting of making, normal working, in rod chamber, insert fusible metal, distance between piston rod and inductive head is greater than the distance that detects of approach switch, when excess temperature after fusible metal melting, the passage flowing out from fusible metal flows out, piston rod moves outward, the action of triggering approach switch, because there being the partition of piston, in excess temperature hydraulic oil in guarantee hydraulic couplers is not ejected, realize and cut off power source, protection hydraulic couplers, and have and can repair, be easy to install, the advantage of inspection and maintenance.
Brief description of the drawings
Accompanying drawing is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of over-temperature protection device;
Fusible plug positional structure schematic diagram when Fig. 2 is over-temperature protection device normal working;
The positional structure schematic diagram of fusible plug when Fig. 3 is the action of over-temperature protection device triggering approach switch;
Fig. 4 is the structural representation of embodiment's 1 fusible plug;
Fig. 5 is the structural representation that embodiment 1 triggers approach switch when action fusible plug;
Fig. 6 is the structural representation of embodiment's 2 fusible plugs;
Fig. 7 is the structural representation that embodiment 2 triggers approach switch when action fusible plug;
Embodiment
Embodiment 1: hydraulic couplers over-temperature protection device as shown in Figure 1 to Figure 3; fusible plug 2 is removably connected on hydraulic couplers; its cylinder barrel is communicated with hydraulic fluid chamber 1; approach switch 3 is connected on mounting bracket 4; mounting bracket 4 can be located on the pedestal of drive unit; approach switch 3 and support 4 be connected and/or support 4 adopts with being connected of pedestal the mode that removably connects, make the distance between approach switch 3 and/or mounting bracket 4 and described fusible plug 2 adjustable.The inductive head of approach switch 3 is positioned at a side of nearly described fusible plug 2, in the time of initial installation, and the central axes of the inductive head of approach switch 3 and fusible plug 2.As shown in Figure 4 and Figure 5, in the present embodiment, fusible plug 2 comprises the cylinder barrel being removably connected on hydraulic couplers, is positioned at piston and the piston rod 5 of cylinder barrel, and hydraulic fluid chamber 1 end of the nearly hydraulic couplers of described cylinder barrel has the limiting stopper 8 of limited piston bar 5 maximum displacements.Cylinder barrel is divided into rod chamber and rodless cavity by piston, rodless cavity is communicated with the hydraulic fluid chamber 1 of hydraulic couplers, rod chamber one end is provided with cylinder cap, cylinder cap center is provided with the axial bore passing for piston rod 5, the diameter of axial bore is greater than the diameter of piston rod 5, piston rod 5 passes after cylinder cap, after also having space for fusible metal 6 meltings, flow out, in described cylinder cap rod chamber, insert melt temperature higher than hydraulic couplers hydraulic oil alarm temperature the fusible metal 6 higher than hydraulic couplers hydraulic oil maximum limit temperature not, when moving in described piston rod 5, while inserting fusible metal in rod chamber, distance between described piston rod 5 and the inductive head of described approach switch 3 is greater than the distance that detects of approach switch 3, when after the fusible metal melting in described rod chamber, fusible metal 6 flows out, described piston rod 5 outwards shifts out under the hydraulic fluid pressure effect of hydraulic couplers, distance after shifting out and between the inductive head of approach switch 3 is not more than the distance that detects of approach switch 3, thereby triggering approach switch 3 moves.
Hydraulic couplers is in running; if hydraulic fluid temperature exceedes after fusible metal melt temperature; the passage flowing out from fusible metal after fusible metal 6 meltings in fusible plug 2 flows out; piston rod 5 is outer to be moved, when hydraulic couplers rotates, in the time that piston rod 5 just rotates to the inductive head position to approach switch 3; approach switch action; output signal, by the input power of control gear cutting-off liquid mechanical couple, thereby realizes the overheat protector to hydraulic couplers.
The restorative procedure of the present embodiment hydraulic couplers over-temperature protection device, comprises the following steps: rotating liquid mechanical couple, in the time of the top of fusible plug 2 positions in hydraulic couplers, pull down fusible plug 2; By the fusible plug having melted 2 and low melting alloy heating to be inserted, by remaining low melting alloy in fusible plug 2 and low melting alloy fusing to be filled; The piston rod stretching out 5 is pressed into original state in cylinder barrel; The passage that fusible metal from fusible plug 2 flows out fills liquid low melting alloy in rod chamber; After low melting alloy cooled and solidified, can reuse.
Embodiment 2: hydraulic couplers over-temperature protection device as shown in Figure 1 to Figure 3; fusible plug 2 is fixedly connected on hydraulic couplers; its cylinder barrel is communicated with hydraulic fluid chamber 1; approach switch 3 is connected on mounting bracket 4; mounting bracket 4 can be located on the pedestal of drive unit; approach switch 3 and support 4 be connected and/or support 4 adopts with being connected of pedestal the mode that removably connects, make the distance between approach switch 3 and/or mounting bracket 4 and described fusible plug 2 adjustable.The inductive head of approach switch 3 is positioned at a side of nearly described fusible plug 2, in the time of initial installation, and the central axes of the inductive head of approach switch 3 and fusible plug 2.As shown in Figure 6 and Figure 7, in the present embodiment, fusible plug 2 comprises the cylinder barrel being fixed on hydraulic couplers, be positioned at piston and the piston rod 5 of cylinder barrel, the container 7 of the fusible metal after splendid attire melting, hydraulic fluid chamber 1 end of the nearly hydraulic couplers of described cylinder barrel has the limiting stopper 8 of limited piston bar 5 maximum displacements.Cylinder barrel is divided into rod chamber and rodless cavity by piston, rodless cavity is communicated with the hydraulic fluid chamber 1 of hydraulic couplers, rod chamber one end is provided with cylinder cap, cylinder cap center is provided with the axial bore passing for piston rod 5, in described cylinder cap rod chamber, insert melt temperature higher than hydraulic couplers hydraulic oil alarm temperature the fusible metal 6 higher than hydraulic couplers hydraulic oil maximum limit temperature not, the close end of rod chamber is provided with the flow pass after fusible metal 6 meltings, the container 7 of the fusible metal after splendid attire melting is removably connected with described flow pass, when moving in described piston rod 5, while inserting fusible metal in rod chamber, distance between described piston rod 5 and the inductive head of described approach switch 3 is greater than the distance that detects of approach switch 3, when after the fusible metal melting in described rod chamber, fusible metal 6 flow in container 7, described piston rod 5 outwards shifts out under the hydraulic fluid pressure effect of hydraulic couplers, distance after shifting out and between the inductive head of approach switch 3 is not more than the distance that detects of approach switch 3, thereby triggering approach switch 3 moves.
Hydraulic couplers is in running; if hydraulic fluid temperature exceedes after fusible metal melt temperature; the passage flowing out from fusible metal after fusible metal 6 meltings in fusible plug 2 is to container 7; piston rod 5 is outer to be moved, when hydraulic couplers rotates, in the time that piston rod 5 just rotates to the inductive head position to approach switch 3; approach switch action; output signal, by the input power of control gear cutting-off liquid mechanical couple, thereby realizes the overheat protector to hydraulic couplers.
The restorative procedure of the present embodiment hydraulic couplers over-temperature protection device, comprise the following steps: rotating liquid mechanical couple, in the time of top in fusible plug 2 of the container 7 of the fusible metal after splendid attire melting, by the fusible plug having melted 2 and container 7 and the heating of low melting alloy wherein, by the low melting alloy fusing in remaining low melting alloy in fusible plug 2 and container 7; The piston rod stretching out 5 is pressed into original state in cylinder barrel; Low melting alloy after fusing is under Action of Gravity Field, and the passage flowing out through fusible metal from container 7 flows back in the rod chamber of fusible plug 2; After low melting alloy cooled and solidified, can reuse.
Obviously, the invention is not restricted to above preferred implementation, also can, in the spirit of the claims in the present invention and specification restriction, carry out conversion and the improvement of various ways, can solve same technical problem, and obtain the technique effect of expection, therefore do not repeat.Those of ordinary skill in the art can be from content disclosed by the invention directly or all schemes of associating, as long as within the spirit limiting in claim, also belong to protection scope of the present invention.
Claims (4)
1. a hydraulic couplers over-temperature protection device, comprise and fix or be detachably connected on the fusible plug (2) being communicated with its hydraulic fluid chamber (1) on hydraulic couplers, it is characterized in that: also comprise the approach switch (3) being connected on mounting bracket (4), the inductive head of described approach switch (3) is positioned at a side of nearly described fusible plug (2), the inductive head of approach switch and described fusible plug (2) central axes in the time of initial installation, described fusible plug (2) comprises fixes or is detachably connected on the cylinder barrel on hydraulic couplers, be positioned at piston and the piston rod (5) of cylinder barrel, described cylinder barrel is divided into rod chamber and rodless cavity by described piston, described rodless cavity is communicated with the hydraulic fluid chamber (1) of hydraulic couplers, described rod chamber one end is provided with cylinder cap, cylinder cap center is provided with the axial bore passing for piston rod (5), in described rod chamber, insert melt temperature higher than hydraulic couplers hydraulic oil alarm temperature the fusible metal (6) higher than hydraulic couplers hydraulic oil maximum limit temperature not, with the passage with the fusible metal outflow after the melting of making, the passage that described fusible metal flows out is also removably connected with the container (7) of the fusible metal after splendid attire melting, when moving in described piston rod (5), while inserting fusible metal in rod chamber, distance between the inductive head of described piston rod (5) and described approach switch (3) is greater than the distance that detects of approach switch (3), when after the fusible metal melting in described rod chamber, described piston rod (5) outwards shifts out under the hydraulic fluid pressure effect of hydraulic couplers, distance after shifting out and between the inductive head of approach switch (3) is not more than the distance that detects of approach switch (3), thereby trigger approach switch (3) action.
2. hydraulic couplers over-temperature protection device according to claim 1, is characterized in that: the distance between described approach switch (3) and/or mounting bracket (4) and described fusible plug (2) is adjustable.
3. hydraulic couplers over-temperature protection device according to claim 1, is characterized in that: hydraulic fluid chamber (1) end of the nearly hydraulic couplers of described cylinder barrel has the limiting stopper (8) of limited piston bar (5) maximum displacement.
4. the restorative procedure of hydraulic couplers over-temperature protection device described in a claim 1, it is characterized in that, comprise the following steps: by the fusible plug having melted (2) and low melting alloy heating to be inserted, by remaining low melting alloy in fusible plug (2) and low melting alloy fusing to be filled; The piston rod stretching out (5) is pressed into original state in cylinder barrel; The passage that fusible metal from fusible plug (2) flows out is inserted liquid low melting alloy in rod chamber; After low melting alloy cooled and solidified, can reuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210307447.4A CN102808916B (en) | 2012-08-27 | 2012-08-27 | Hydraulic coupler over-temperature protection device and repairing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210307447.4A CN102808916B (en) | 2012-08-27 | 2012-08-27 | Hydraulic coupler over-temperature protection device and repairing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102808916A CN102808916A (en) | 2012-12-05 |
| CN102808916B true CN102808916B (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210307447.4A Expired - Fee Related CN102808916B (en) | 2012-08-27 | 2012-08-27 | Hydraulic coupler over-temperature protection device and repairing method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1037268A (en) * | 1963-08-20 | 1966-07-27 | Colette Schuler Voith | Temperature responsive indicating device |
| US3377957A (en) * | 1965-09-03 | 1968-04-16 | Fluidrive Eng Co Ltd | Fusible plug assemblies for hydraulic turbo-couplings |
| US3436916A (en) * | 1967-10-02 | 1969-04-08 | John Edward Becker | Hydraulic couplings |
| EP1577577A2 (en) * | 2004-03-15 | 2005-09-21 | A. Friedr. Flender Ag | Fuse for hydrodynamical coupling |
| CN201513540U (en) * | 2009-08-26 | 2010-06-23 | 大连液力机械有限公司 | Proximity position sensor alarm type hydraulic coupler |
| CN102089543A (en) * | 2008-07-08 | 2011-06-08 | 沃依特专利有限责任公司 | Closure with thermal safety function for a hydrodynamic machine |
| CN202746528U (en) * | 2012-08-15 | 2013-02-20 | 广东中兴液力传动有限公司 | Temperature rise warning blowout preventer of hydraulic coupler |
| CN202768768U (en) * | 2012-08-27 | 2013-03-06 | 泰富重工制造有限公司 | Hydraulic coupler over-temperature protection device |
-
2012
- 2012-08-27 CN CN201210307447.4A patent/CN102808916B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1037268A (en) * | 1963-08-20 | 1966-07-27 | Colette Schuler Voith | Temperature responsive indicating device |
| US3377957A (en) * | 1965-09-03 | 1968-04-16 | Fluidrive Eng Co Ltd | Fusible plug assemblies for hydraulic turbo-couplings |
| US3436916A (en) * | 1967-10-02 | 1969-04-08 | John Edward Becker | Hydraulic couplings |
| EP1577577A2 (en) * | 2004-03-15 | 2005-09-21 | A. Friedr. Flender Ag | Fuse for hydrodynamical coupling |
| CN102089543A (en) * | 2008-07-08 | 2011-06-08 | 沃依特专利有限责任公司 | Closure with thermal safety function for a hydrodynamic machine |
| CN201513540U (en) * | 2009-08-26 | 2010-06-23 | 大连液力机械有限公司 | Proximity position sensor alarm type hydraulic coupler |
| CN202746528U (en) * | 2012-08-15 | 2013-02-20 | 广东中兴液力传动有限公司 | Temperature rise warning blowout preventer of hydraulic coupler |
| CN202768768U (en) * | 2012-08-27 | 2013-03-06 | 泰富重工制造有限公司 | Hydraulic coupler over-temperature protection device |
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| Publication number | Publication date |
|---|---|
| CN102808916A (en) | 2012-12-05 |
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Denomination of invention: Hydraulic coupler over-temperature protection device and repairing method thereof Effective date of registration: 20180503 Granted publication date: 20141119 Pledgee: Xiangtan Jiuhua Economic Construction Investment Co., Ltd. Pledgor: Tidfore Engineering Co., Ltd.|Tidfore Heavy Industry Co., Ltd.|Ocean engineering equipment (Tianjin) Co., Ltd. Registration number: 2018430000029 |
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Effective date of registration: 20180518 Address after: 448299 Hubei Jingmen Shayang County Hongling Road south end of the Agricultural Machinery Management Bureau hospital Patentee after: Tai Fu heavy industry (Shayang) Manufacturing Co., Ltd. Address before: 411202 6 Mercedes Benz Road, Xiangtan Jiuhua demonstration area, Xiangtan, Hunan Patentee before: Tidfore Heavy Industry Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20141119 Termination date: 20180827 |