CN201794959U - Hydraulic coupling - Google Patents
Hydraulic coupling Download PDFInfo
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- CN201794959U CN201794959U CN2010202482909U CN201020248290U CN201794959U CN 201794959 U CN201794959 U CN 201794959U CN 2010202482909 U CN2010202482909 U CN 2010202482909U CN 201020248290 U CN201020248290 U CN 201020248290U CN 201794959 U CN201794959 U CN 201794959U
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- oil pump
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- fusible plug
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- 238000010168 coupling process Methods 0.000 title claims abstract description 83
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 83
- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 47
- 239000012530 fluid Substances 0.000 claims description 86
- 239000004519 grease Substances 0.000 claims description 86
- 238000005461 lubrication Methods 0.000 claims description 51
- 239000000314 lubricant Substances 0.000 claims description 38
- 239000002828 fuel tank Substances 0.000 claims description 37
- 239000000155 melt Substances 0.000 claims description 17
- 238000013016 damping Methods 0.000 claims description 16
- 230000000994 depressogenic effect Effects 0.000 claims description 9
- 239000003921 oil Substances 0.000 abstract description 206
- 230000001050 lubricating effect Effects 0.000 abstract description 9
- 230000004927 fusion Effects 0.000 abstract description 7
- 239000010687 lubricating oil Substances 0.000 abstract description 3
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- 229910000743 fusible alloy Inorganic materials 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
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Abstract
A hydraulic coupling comprises a pump wheel, a turbine and a bearing device, wherein the pump wheel is connected with an input shaft, and a shell of the pump wheel is provided with a fusible plug; the turbine is connected with an output shaft; the bearing device supports the input shaft and the output shaft and comprises a sliding bearing and a lubricating system; the fusible plug comprises a main body, a head part and a fusion channel poured with fusible metal; the fusion channel comprises a first opening and a second opening, and the first opening is positioned at the center of the end surface of the main body and the second opening is positioned on the side surface of the head part (200); and the lubricating system comprises an oil tank, a main oil pump, an auxiliary oil pump and a second check valve, the main oil pump is used for creating oil pressure in an oil chamber, the auxiliary oil pump is used for maintaining the oil pressure in the oil chamber to be within a reasonable range, a first check valve is connected between the auxiliary oil pump and the oil chamber, and the second check valve is used for only allowing lubricating oil to flowing from the main oil pump into the oil chamber. In the hydraulic coupler, the normal and reliable work of the fusible plug as well as the lubricating system is ensured.
Description
Technical field
The utility model relates to a kind of fluid coupling.
Background technique
Fluid coupling is to be a kind of nonrigid coupling device of driving medium with liquid, claims fluid coupling again.Fluid coupling generally includes pump impeller that is connected with input shaft and the turbine that is connected with output shaft, and this pump impeller and turbine are formed the airtight chamber that permission is flowed as the liquid circulation of driving medium.
When proper functioning, driver (as internal-combustion engine or motor etc.) drives the input shaft rotation, is thrown away by pump impeller and enters turbine with higher speed as the liquid of driving medium, thereby drive the turbine rotation, and then will give output shaft from the energy transfer that driver obtains, realize the transmission of power.
In order to ensure the proper functioning of fluid coupling, in fluid coupling, also be provided with fusible plug.Fusible plug is a kind of safe pressure relief device.The external shape and the bolt of fusible plug are similar, but fusible plug has the passage that runs through this fusible plug, are perfused with low melting alloy in this passage.The outer surface of fusible plug is provided with screw thread, is used to be installed in fluid coupling.
When hydraulic coupler rotor, along with the increase of fluid coupling transmitted load, the temperature as the liquid of driving medium in the fluid coupling can raise, and its pressure also can increase gradually.In order to ensure the proper functioning of fluid coupling, in fluid coupling, be provided with fusible plug.
Illustrated in figures 1 and 2 is fusible plug in traditional fluid coupling, and this fusible plug comprises main body 100, head 200 and runs through the melt channel 300 of this fusible plug along described fusible plug longitudinal direction, is perfused with fusible metal 400 in advance in this melt channel 300.The outer peripheral surface of main body 100 is provided with screw section 101, and described fusible plug is installed on the housing of fluid coupling by this screw section 101.
The working principle of fusible plug is: when load that fluid coupling transmitted increases gradually, temperature as the liquid of driving medium raises gradually, and the pressure of this liquid also increases gradually, since in the fusible plug in advance the fusing point of the fusible metal of perfusion and fluid coupling to be in the temperature upper limit of aforesaid liquid of normal working corresponding mutually, thereby in case surpass predetermined value (promptly surpassing the upper limit) as the temperature of the liquid of driving medium, the then fusing of the low melting alloy in the fusible plug, then the pressure fluid in the fluid coupling is discharged to the outside by the melt channel 300 of fusible plug, prevent that fluid coupling is interior as the fluid temperature of driving medium too high (and/or pressure is excessive) thereby play, be in the effect in the normal working state to guarantee fluid coupling.
Yet, according to the fusible plug in traditional fluid coupling illustrated in figures 1 and 2, following problem often appears in real work: when the temperature as the liquid of driving medium does not also reach the fusing point of fusible metal, fusible metal in the fusible plug in traditional fluid coupling just begins fusing, be easy to cause melt channel 300 to connect, thereby the fusible plug as safety installations (is for example moved in normal working at fluid coupling, the fusing point of fusible metal is 120 degrees centigrade in the fusible plug, but in real work, fusible metal when arriving 90 degrees centigrade as the fluid temperature of driving medium in the fluid coupling in the fusible plug just begins fusing), have a strong impact on the proper functioning of fluid coupling.
In addition, in order to satisfy the motion requirement as the above-mentioned input shaft and the output shaft of solid of rotation, described input shaft and output shaft all must be by bearings, and this bearing can comprise rolling bearing and/or sliding bearing.In being provided with the situation of sliding bearing, described fluid coupling also has lubrication system, to be used for providing sufficient lubricating to sliding bearing, guarantees its proper functioning.
Figure 5 shows that the schematic representation of the traditional lubrication system that is used for fluid coupling.This traditional lubrication system comprises fuel tank 110, main oil pump 210, auxiliary oil pump 310 and bearing shell (not shown) to be lubricated, wherein, main oil pump 210 is used for the lubricating pump of fuel tank 110 is pressed onto in the grease chamber of bearing shell to be lubricated, thereby guarantees that the oil pressure in this grease chamber is within the reasonable range.Auxiliary oil pump 310 is used for main oil pump 210 is finished the predetermined pressure of setting up lubricant oil in the grease chamber after, keep the pressure of lubricant oil in the grease chamber to be within the suitable scope, thereby the sliding bearing of guaranteeing fluid coupling obtains lubricated fully reliably, and then fluid coupling can be worked normally.
The working procedure of this traditional lubrication system is: start main oil pump 210, this main oil pump 210 is finished the predetermined pressure of setting up lubricant oil in the grease chamber of sliding bearing, can close main oil pump 210 then; Normally operation under the lubrication of sliding bearing lubricant oil of predetermined pressure in the grease chamber; Simultaneously, the pressure of lubricant oil is within the zone of reasonableness in the grease chamber in order to keep, and starts auxiliary oil pump 310, and this auxiliary oil pump 310 continues pump pressure lubricant oil to the grease chamber, thereby always can keep the lubricant oil in the grease chamber to be within the zone of reasonableness.In addition, also be provided with safety check 410 between auxiliary oil pump 310 and grease chamber, lubricant oil flows into fuel tank by auxiliary oil pump when being used to prevent to start main oil pump.
Yet in practice, inventor of the present utility model finds, after main oil pump 210 is finished the foundation of lubricant oil predetermined pressure and during auxiliary oil pump 310 operations, the pressure of lubricant oil always can not be within the reasonable range in the grease chamber of sliding bearing to be lubricated.That is to say, finish at main oil pump 210 and to set up in the grease chamber behind the lubricating oil pressure, the auxiliary oil pump operation time can not make that the pressure of lubricant oil reaches normal scope in the grease chamber, thereby the bearing shell that makes the sliding bearing to be lubricated of fluid coupling is difficult to form enough lubricant films, cause bearing bush abrasion serious, and the returning-oil temperature of lubricant oil is higher, has a strong impact on the proper functioning of fluid coupling.
And; when operating mode is abominable even can cause fluid coupling normally to start; even operation; running state is also very unstable and dangerous; need often to shut down maintenance; not only reduce the utilizability and the reliability of equipment largely, also greatly increased maintenance and maintenance cost simultaneously.
By above-mentioned analysis as can be known; a kind of fluid coupling need be provided; the fusible plug of this fluid coupling just can melt when can be exactly reaching the fusing point of fusible metal as the temperature of the liquid of driving medium in fluid coupling; so that this fusible plug can either play the effect of safety protection, also can not influence the proper functioning of fluid coupling.And the lubrication system of this fluid coupling can be worked reliably, provides lubricated reliably with the sliding bearing of giving fluid coupling.
The model utility content
In order to solve the above-mentioned problems in the prior art, and fluid coupling provided by the utility model has been proposed.
For solving the problems of the technologies described above, the utility model provides a kind of fluid coupling, and this fluid coupling comprises:
The pump impeller that is connected with input shaft is equipped with fusible plug on the housing of this pump impeller;
The turbine that is connected with output shaft;
Support the bearing means of described input shaft and output shaft, this bearing means comprises sliding bearing and the lubrication system that this sliding bearing is lubricated; Wherein:
Described fusible plug comprises main body, head and the melt channel that runs through this fusible plug along described fusible plug longitudinal direction, be perfused with fusible metal in this melt channel), described fusible plug also has flow-stopping plate, this flow-stopping plate embeds the fusible metal that is arranged in described melt channel, the vertical and described melt channel of incomplete obstruction of longitudinal direction of described flow-stopping plate and described melt channel;
Described lubrication system comprises: the fuel tank that stores lubricant oil; Main oil pump, this main oil pump connects the grease chamber of described fuel tank and described sliding bearing, and this grease chamber is communicated with described fuel tank by way to cycle oil, and described main oil pump is used for setting up oil pressure in the grease chamber; Auxiliary oil pump, this auxiliary oil pump connects described fuel tank and described grease chamber, be used to keep the described oil pressure in this grease chamber to be within the reasonable range, be connected with first safety check between described auxiliary oil pump and grease chamber, this first safety check only allows lubricant oil to flow to described grease chamber from described auxiliary oil pump; Described lubrication system also comprises second safety check, and this second safety check is connected between described main oil pump and the grease chamber, is used for only allowing lubricant oil to flow to described grease chamber from described main oil pump.
The present inventor finds, for the fusible plug in traditional fluid coupling, the problem that the fusible metal fusing just appears in fusing point that fluid temperature as driving medium also do not reach fusible metal why occurring, mainly is because the working state of fusible plug is the state that is rotated motion with fluid coupling.Specifically, fusible plug is not static, owing to rotating, thereby be subjected to action of centrifugal force.The present inventor finds, when increasing gradually along with load that fluid coupling transmitted, temperature as the liquid of driving medium raises gradually, promptly move closer to the fusing point of fusible metal as the temperature of the liquid of driving medium, in this process, fusible metal is deliquescing gradually, and local fusible metal may become liquid state or be about to become liquid state in fusible metal.But because the longitudinal direction of suffered action of centrifugal force direction of fusible plug and fusible plug is basic identical, therefore, fusible metal has the trend that throws away from melt channel.Thereby, though also do not reach the fusing point of fusible metal as the fluid temperature of driving medium, but under action of centrifugal force, be in liquid fusible metal and do not produced percussion, also be not in liquid fusible metal around impelling and enter molten state (i.e. liquid state) rapidly also being in liquid fusible metal on every side.So, in practice, usually can occur that fluid temperature as driving medium does not also reach or during, the problem that the fusible metal in the fusible plug moves with regard to becoming liquid state near the fusing point of fusible metal.
And for the lubrication system in traditional fluid coupling, the present inventor once did multiple trial.Originally, the present inventor thought that the reason that causes auxiliary oil pump can not make oil pressure in the grease chamber reach predetermined zone of reasonableness was that the flow of auxiliary oil pump is too little.Based on this consideration, in practice, once changed the bigger auxiliary oil pump of flow and replace the less auxiliary oil pump of flow, but effect is unsatisfactory.Behind the auxiliary oil pump of having changed big flow, the oil pressure in the grease chamber still can not reach desirable stress level, and the oil film of bearing shell still is difficult to meet the demands.
In-depth analysis research through the present inventor, the present inventor thinks that the main cause that causes auxiliary oil pump can not make oil pressure in the grease chamber reach predetermined zone of reasonableness is not that the flow of auxiliary oil pump is too little, but because has the place of draining in lubrication system.Specifically, for the lubrication system of traditional fluid coupling, main oil pump finished set up predetermined oil pressure in the grease chamber at bearing shell after, when starting auxiliary oil pump, the part of the lubricant oil of auxiliary oil pump institute pump pressure can directly flow back in the fuel tank by main oil pump, thereby lubrication pressure is reduced, be difficult to make the oil pressure in the grease chamber to reach predetermined scope.This is the reason place of causing above-mentioned lubrication system cisco unity malfunction.
Exactly because the present inventor finds and furtherd investigate fusible plug and the existing the problems referred to above of lubrication system of traditional fluid coupling, can design and propose the application's technological scheme.
According to fluid coupling provided by the utility model, because fusible plug also has flow-stopping plate, this flow-stopping plate embeds the fusible metal that is arranged in described melt channel, vertical and the described melt channel of this flow-stopping plate incomplete obstruction of longitudinal direction of described flow-stopping plate and described melt channel, thereby flow-stopping plate keeps the unimpeded of melt channel on the one hand, after the fusible metal fusion becomes liquid state, flow-stopping plate can not influence the melt channel that liquid fusible metal flows out fusible plug, guarantees that fusible plug brings into play its safety effect; On the other hand, owing to longitudinal direction vertical be provided with of flow-stopping plate with melt channel, thereby this flow-stopping plate can produce resistant function to the suffered centrifugal force of fusible metal, when the local appearance of (as mainly being arranged in main body) of flow-stopping plate one side fusible metal is liquid, this liquid fusible metal can not produce percussion to flow-stopping plate opposite side (as being arranged in head) fusible metal, thereby prevent that when the temperature as the liquid of driving medium did not also reach the fusing point of fusible metal, all fusible metals just were in the liquid state of fusion.That is to say, can partly alleviate or eliminate fusible metal at least and be subjected to the influence of centrifugal force and go back the no show fusing point with regard to the problem of fusion for liquid state.
And, by flow-stopping plate is set, can also change the direction of melt channel.Specifically, as shown in Figure 2, the melt channel in traditional fusible plug runs through for the longitudinal direction along fusible plug.But in according to fusible plug provided by the utility model, as shown in Figure 4, it is not complete longitudinal direction along fusible plug that flow-stopping plate makes melt channel, turns round but melt channel is produced, promptly part is extended along the radial direction of fusible plug, thereby plays the effect of the influence of eliminating centrifugal force too.
According to fluid coupling provided by the utility model; owing to alleviate or eliminated the adverse effect of centrifugal force to small part to fusible metal; thereby can guarantee in the hydraulic coupler rotor process; when the fluid temperature as driving medium reaches the fusing point of fusible metal; fusible metal in the fusible plug is just understood fusion for liquid; so that this fusible plug can either play the effect of safety protection, also can not influence the proper functioning of fluid coupling.
In addition, in fluid coupling provided by the utility model, described lubrication system is provided with second safety check between described main oil pump and described grease chamber, this second safety check only allows lubricant oil to flow to described grease chamber from described main oil pump, and does not allow lubricant oil to be back to fuel tank by main oil pump.Therefore, after main oil pump is finished build-up pressure work in the grease chamber and when starting auxiliary oil pump, the part that can prevent the lubricant oil of auxiliary oil pump institute pump pressure directly flow back in the fuel tank by main oil pump, thereby can avoid the reduction of lubrication pressure, and then can make the oil pressure in the grease chamber reach predetermined scope.
By above-mentioned analysis as can be known, utilize fluid coupling provided by the utility model, can either guarantee the normal reliable work of fusible plug, also can make lubrication system normal reliable work, thereby can realize the purpose of this utility model to the sliding bearing supplying lubricating oil.
Preferably, described flow-stopping plate is fixedly connected on the inwall of described melt channel.
Preferably, described melt channel comprises first passage and the bigger second channel of diameter that diameter is less, and this second channel is positioned at described head, and described flow-stopping plate embeds the fusible metal that is arranged in this second channel.
Preferably, the radial dimension of described flow-stopping plate is less than the diameter of described second channel and greater than the diameter of described first passage.
Preferably, described head has the polygonal external frame.
Preferably, the sectional shape of the second channel of described melt channel is a polygonal, and the described fusible metal that is positioned at the described second channel of described melt channel is depressed in the end face of described head.
Preferably, described melt channel and described main body and head are coaxial.
Preferably, described lubrication system also comprises damping device, and this damping device is between described main oil pump and auxiliary oil pump and described grease chamber, and perhaps described damping device is arranged in the described way to cycle oil.
Other feature and advantage of the present utility model will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with embodiment one of the present utility model, but does not constitute restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the plan view of traditional fusible plug of observing from the head;
Fig. 2 is the longitdinal cross-section diagram of traditional fusible plug shown in Figure 1;
Fig. 3 is the plan view of observing from the head according to the fusible plug of the fluid coupling of the utility model preferred implementation;
Fig. 4 is the longitdinal cross-section diagram of fusible plug shown in Figure 3.
Fig. 5 is the schematic representation that is used for traditional lubrication system of fluid coupling;
Fig. 6 is the schematic representation according to the lubrication system of the fluid coupling of mode of execution of the present utility model.
The reference character of critical piece
Head 200
Melt channel 300 '
Second safety check 510
Damping device 610
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
As Fig. 3, Fig. 4 and shown in Figure 6, fluid coupling provided by the utility model comprises:
The pump impeller that is connected with input shaft is equipped with fusible plug on the housing of this pump impeller;
The turbine that is connected with output shaft;
Support the bearing means of described input shaft and output shaft, this bearing means comprises sliding bearing and the lubrication system that this sliding bearing is lubricated; Wherein:
Described fusible plug comprises main body 100, head 200 and the melt channel 300 that runs through this fusible plug along described fusible plug longitudinal direction, be perfused with fusible metal 400 in this melt channel 300, described fusible plug also has flow-stopping plate 500, this flow-stopping plate 500 embeds the fusible metal 400 that is arranged in described melt channel 300, the vertical and described melt channel 300 of incomplete obstruction of longitudinal direction of described flow-stopping plate 500 and described melt channel 300;
Described lubrication system comprises: the fuel tank 110 that stores lubricant oil; Main oil pump 210, this main oil pump 210 connects the grease chamber of described fuel tank 110 and described sliding bearing, and this grease chamber is communicated with described fuel tank 100 by way to cycle oil, and described main oil pump is used for setting up oil pressure in the grease chamber; Auxiliary oil pump 310, this auxiliary oil pump 310 connects described fuel tank 110 and described grease chamber, be used to keep the described oil pressure in this grease chamber to be within the reasonable range, be connected with first safety check 410 between described auxiliary oil pump 310 and grease chamber, this first safety check 410 only allows lubricant oil to flow to described grease chamber from described auxiliary oil pump 310; Described lubrication system also comprises second safety check 510, and this second safety check 510 is connected between described main oil pump 210 and the grease chamber, is used for only allowing lubricant oil to flow to described grease chamber from described main oil pump 210.
As mentioned above, fluid coupling is to be a kind of nonrigid coupling device of driving medium with liquid, fluid coupling generally includes pump impeller that is connected with input shaft and the turbine that is connected with output shaft, and this pump impeller and turbine are formed the airtight chamber that permission is flowed as the liquid circulation of driving medium.
Compare with traditional fluid coupling, the main improvements of fluid coupling provided by the utility model are to be installed in the fusible plug on the housing of pump impeller, and the lubrication system that lubricant oil is provided to sliding bearing.Therefore, will omit or simplify description in this manual to miscellaneous part except that fusible plug and lubrication system or constituent element.But, it should be appreciated by those skilled in the art that each parts or features such as its setting, structure traditional or existing fluid coupling can be combined in the technical solution of the utility model on the basis of realizing the purpose of this utility model.
At first describe the fusible plug in the fluid coupling provided by the utility model below in detail.
As shown in Figure 3 and Figure 4, fusible plug in the fluid coupling provided by the utility model comprises: main body 100, head 200 and the melt channel 300 ' that is perfused with fusible metal 400, wherein, described melt channel 300 ' comprises first mouthful 500 and second mouthfuls 600, this first mouthful of 500 central position that is positioned at the end face of described main body 100 is on described second mouthful of 600 side surface that is positioned at described head 200.
Compare with the fusible plug in the traditional fluid coupling, the main improvements of the fusible plug in the fluid coupling of the present utility model are the variation of melt channel structure.Specifically, different with the melt channel 300 that runs through along the fusible plug longitudinal direction in traditional fusible plug, the melt channel 300 ' of the fusible plug in the fluid coupling provided by the utility model is not that complete longitudinal direction along fusible plug extends, but comprise first mouthful 500 of the central position of the end face that is positioned at described main body 100 and be positioned on the side surface of described head 200 second mouthful 600, thereby this melt channel 300 ' has a part of extending along the radial direction of fusible plug (i.e. second mouthful of 600 part that extends internally from the side surface that is positioned at head 200).For this part, the outflow direction of the fusible metal in this part is the radial direction along fusible plug, and the suffered centrifugal force direction of whole fusible plug is the longitudinal direction along fusible plug, therefore the fusible metal in this part can not be subjected to the adverse effect of centrifugal force basically, thereby can guarantee when the temperature as the liquid of driving medium reaches the fusing point of fusible metal, fusible metal in the fusible plug in the melt channel can complete fusion be a liquid state, thereby guarantees that fusible plug can normally work.
First mouthful of 500 central position that is positioned at the end face of main body 100 is so that the manufacturing of melt channel 300 '.Be positioned at for second mouthful 600 on the side surface of head 200, when the external frame of head 200 is polygonal shape, described side surface can be any one in a plurality of side surfaces of head 200, second mouthful 600 can also be for a plurality of, these a plurality of second mouthful a plurality of side surface that can be separately positioned on head 200; Described side surface can also be the external peripheral surface of cylindrical head 200.
First mouthful of 500 sectional shape with second mouthful 600 can be identical, also can be inequality, and for example can all be circular, also can be to be respectively circular and square.First mouthful 500 section area can be identical with second mouthful 600 section area, also can be inequality.In other words, first mouthful 500 and second mouthfuls 600 shape and size do not had ad hoc requirement.
Melt channel 300 ' comprises first mouthful 500 and second mouthfuls 600, and the part between these first mouthful 500 and second mouthfuls 600 can be extended with the path of any appropriate.For example, the direction boring from first mouthful 500 along the central axis that favours fusible plug, directly 200 side surface gets out from the head; The perhaps direction along the central axis that favours fusible plug boring from first mouthful 500, and from the head 200 side surface to internal drilling, thereby make the two identical, and then form melt channel 300 '.In addition, can also utilize mach modes such as casting to make fusible plug provided by the utility model.
Preferably, for the ease of making processing, described melt channel 300 ' comprises first passage 301 and second channel 302, described first passage 301 extends to described head 200 along the axial direction of described fusible plug from described first mouthful 500, and described second channel 302 extends and communicates with described first passage 301 from described second mouthful of 600 radial direction along described fusible plug.
The melt channel 300 ' of this structure can pass through to hole to head 200 along central axis from the central position of the end face of main body 100, and radially is processed into to internal drilling at the side surface of head 200.
Preferably, described first passage 301 and described main body 100 are coaxial.
For the ease of this fusible plug being operated (as tighten or dismantle), preferably, described fusible plug also comprises the depressed part 700 on the end face that is positioned at described head 200, and this depressed part 700 has polygonal sectional shape.
Perhaps, preferably, described head 200 has the polygonal external frame.For example, the external frame of head 200 is a regular hexagon, perhaps equilateral triangle etc., thus the easy-to-operat personnel turn this fusible plug, with this fusible plug of installation or removal.Have at head 200 under the situation of polygonal external frame, operator can utilize corresponding spanner to cooperate with this head 200, thereby turn described fusible plug.
More than the fusible plug in the fluid coupling provided by the utility model is described in detail, below the lubrication system in the fluid coupling provided by the utility model is described in detail.
As shown in Figure 6, the lubrication system of fluid coupling provided by the utility model comprises:
Described lubrication system also comprises second safety check 510, and this second safety check 510 is connected between described main oil pump 210 and the described grease chamber, is used for only allowing lubricant oil to flow to described grease chamber from described main oil pump 210.
Compare with the traditional lubrication system in the fluid coupling shown in Figure 5, the main improvements of the lubrication system in the fluid coupling provided by the utility model are, are provided with second safety check 510 at the downstream position of main oil pump 210.
The interior oil pressure of lubrication system is set up in acting as of main oil pump 210, specifically, sets up the oil pressure of bearing intermediate bushing grease chamber to be lubricated, thereby helps the formation of the oil film of bearing shell, to satisfy the motion requirement of sliding bearing.
When main oil pump 210 operations, auxiliary oil pump 310 does not start, and main oil pump 210 is pressed onto the lubricating pump in the fuel tank 110 in the lubrication system, is pumped to specifically in the grease chamber of bearing shell, thereby sets up predetermined oil pressure in this grease chamber.
Preferably, foundation for the ease of oil pressure, this lubrication system also comprises damping device 610, and this damping device 610 is between described main oil pump 210 and auxiliary oil pump 310 and described grease chamber, and perhaps described damping device 610 is between described grease chamber and described fuel tank 110.For example damping device can be throttle valve or throttle orifice etc.
In the situation of damping device 610 between described main oil pump 210 and auxiliary oil pump 310 and described grease chamber, the operation of main oil pump 210 can be set up the oil pressure in the pipeline between main oil pump 210 and the damping device 610, and then can set up the oil pressure in the grease chamber indirectly.In the situation of described damping device 610 between described grease chamber and described fuel tank 110 (being that damping device is arranged in the described way to cycle oil), the operation of main oil pump 210 can be set up the oil pressure in the pipeline between main oil pump 210 and the damping device 610, and then can directly set up the oil pressure in the grease chamber.Above-mentioned dual mode can be selected according to concrete application operating mode to utilize.
This grease chamber is communicated with described fuel tank 110 by the way to cycle oil (not shown); thereby form the circulating pressure lubrication passages; thereby the lubricant oil that flows back to fuel tank 110 by way to cycle oil from the grease chamber can either be taken away heat; also the impurity that bearing bush abrasion produces can be taken away, be in good lubricated working state to guarantee sliding bearing.
In addition, downstream position at auxiliary oil pump 310 is provided with first safety check 410, thereby when main oil pump 210 operations, the lubricant oil of 210 pump pressures of main oil pump can not be back in the fuel tank 110 by auxiliary oil pump 310, thereby helps the build-up pressure of main oil pump 210.
The flow of main oil pump 210 is bigger usually, thereby sets up predetermined oil pressure easily in lubrication system.But in order to keep the oil pressure in the lubrication system, if still keep by the bigger main oil pump 210 of flow, then power consumption is bigger on the one hand, be not easy on the other hand the oil pressure in the lubrication system (is for example remained on stable level, if start main oil pump 210 always, because main oil pump 210 is pumped into flow in the grease chamber much larger than the flow that is back to fuel tank from the grease chamber, thereby the oil pressure in the lubrication system is raise fast).
Therefore, in lubrication system, utilize auxiliary oil pump 310 to keep oil pressure usually.Finish at described main oil pump and to set up oil pressure and after out of service in the grease chamber, auxiliary oil pump 310 starts, and this auxiliary oil pump 310 is pressed onto the lubricating pump in the fuel tank 110 in the grease chamber.
And, main oil pump 210 also can with auxiliary oil pump 310 coordinated, to guarantee that the oil pressure in the grease chamber is within the reasonable range, for example (flow is relatively slightly little) main oil pump 210 also can together move with auxiliary oil pump 310, when the oil pressure in the grease chamber surpasses predetermined scope, can make main oil pump 210 out of service, perhaps make auxiliary oil pump 310 out of service; And when the oil pressure in the grease chamber is lower than prespecified range, main oil pump 210 and auxiliary oil pump 310 are moved simultaneously, so that the oil pressure in the grease chamber raises, guarantee that the oil pressure in the grease chamber recovers normal horizontal extent.The oil pressure of setting up in oil pressure in the grease chamber and the lubrication system has corresponding relation, also can utilize the oil pressure level of setting up in the pipeline of sensor lubrication system to control the operation of main oil pump 210 and auxiliary oil pump 310.
In addition, auxiliary oil pump 310 also can be used as emergency bearing oil pump and uses, the time to guarantee the proper functioning of lubrication system in main oil pump 210 faults or maintenance.
In traditional lubrication system shown in Figure 1, as mentioned above,, thereby be difficult to make the oil pressure arrival reasonable range grease chamber in owing to the part of the lubricant oil of 310 pump pressures of auxiliary oil pump can be back in the fuel tank 110 through main oil pump 210.
And in lubrication system provided by the utility model, because the downstream position at main oil pump 210 is provided with second safety check 510, thereby the part that can prevent the lubricant oil of auxiliary oil pump institute pump pressure directly flow back in the fuel tank by main oil pump, thereby can avoid the reduction of lubrication pressure, and then can make the oil pressure in the grease chamber reach predetermined scope.
Need to prove that each the concrete technical characteristics described in above-mentioned embodiment can carry out combination in any by any suitable manner, it falls within the scope disclosed in the utility model equally.In addition, also can carry out combination in any between the various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Below describe preferred implementation of the present utility model in conjunction with the accompanying drawings in detail; but; the utility model is not limited to the detail in the above-mentioned mode of execution; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Claims (6)
1. fluid coupling comprises:
The pump impeller that is connected with input shaft is equipped with fusible plug on the housing of this pump impeller;
The turbine that is connected with output shaft;
Support the bearing means of described input shaft and output shaft, this bearing means comprises sliding bearing and the lubrication system that this sliding bearing is lubricated; It is characterized in that:
Described fusible plug comprises main body (100), head (200) and the melt channel (300 ') that is perfused with fusible metal (400), this melt channel (300 ') comprises first mouthful (500) and second mouthful (600), these first mouthful (500) are positioned at the central position of the end face of described main body (100), and described second mouthful (600) are positioned on the side surface of described head (200);
Described lubrication system comprises: the fuel tank (110) that stores lubricant oil; Main oil pump (210), this main oil pump (210) connects the grease chamber of described fuel tank (110) and described sliding bearing, and this grease chamber is communicated with described fuel tank (100) by way to cycle oil, and described main oil pump is used for setting up oil pressure in the grease chamber; Auxiliary oil pump (310), this auxiliary oil pump (310) connects described fuel tank (110) and described grease chamber, be used to keep the described oil pressure in this grease chamber to be within the reasonable range, be connected with first safety check (410) between described auxiliary oil pump (310) and grease chamber, this first safety check (410) only allows lubricant oil to flow to described grease chamber from described auxiliary oil pump (310); Described lubrication system also comprises second safety check (510), and this second safety check (510) is connected between described main oil pump (210) and the grease chamber, is used for only allowing lubricant oil to flow to described grease chamber from described main oil pump (210).
2. fluid coupling according to claim 1, it is characterized in that, described melt channel (300 ') comprises first passage (301) and second channel (302), the axial direction of described first passage (301) from described first mouthful (500) along described fusible plug extends to described head (200), and the radial direction of described second channel (302) from described second mouthful (600) along described fusible plug extended and communicated with described first passage (301).
3. fluid coupling according to claim 2 is characterized in that, described first passage (301) is coaxial with described main body (100).
4. fluid coupling according to claim 1 is characterized in that, described fusible plug also comprises the depressed part (700) on the end face that is positioned at described head (200), and this depressed part (700) has polygonal sectional shape.
5. fluid coupling according to claim 1 is characterized in that, described head (200) has the polygonal external frame.
6. according to any described fluid coupling among the claim 1-5, it is characterized in that, this lubrication system also comprises damping device (610), this damping device (610) is positioned between described main oil pump (210) and auxiliary oil pump (310) and the described grease chamber, and perhaps described damping device (610) is arranged in the described way to cycle oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202482909U CN201794959U (en) | 2010-06-24 | 2010-06-24 | Hydraulic coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202482909U CN201794959U (en) | 2010-06-24 | 2010-06-24 | Hydraulic coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201794959U true CN201794959U (en) | 2011-04-13 |
Family
ID=43849868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202482909U Expired - Lifetime CN201794959U (en) | 2010-06-24 | 2010-06-24 | Hydraulic coupling |
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| Country | Link |
|---|---|
| CN (1) | CN201794959U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769018A (en) * | 2017-01-03 | 2017-05-31 | 中国船舶重工集团公司第七研究所 | A kind of chamber of fluid-flywheel clutch |
-
2010
- 2010-06-24 CN CN2010202482909U patent/CN201794959U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769018A (en) * | 2017-01-03 | 2017-05-31 | 中国船舶重工集团公司第七研究所 | A kind of chamber of fluid-flywheel clutch |
| CN106769018B (en) * | 2017-01-03 | 2023-08-15 | 中国船舶集团有限公司第七一一研究所 | Test box of hydraulic coupler |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110413 |
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| CX01 | Expiry of patent term |