CN202319799U - Oil gas suspension system and crane - Google Patents
Oil gas suspension system and crane Download PDFInfo
- Publication number
- CN202319799U CN202319799U CN2011204025531U CN201120402553U CN202319799U CN 202319799 U CN202319799 U CN 202319799U CN 2011204025531 U CN2011204025531 U CN 2011204025531U CN 201120402553 U CN201120402553 U CN 201120402553U CN 202319799 U CN202319799 U CN 202319799U
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- oil cylinder
- fluid port
- hydraulic fluid
- hanging oil
- hydro
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Abstract
The utility model discloses an oil gas suspension system, which comprises a first suspended oil cylinder, a second suspended oil cylinder, a first energy accumulator and a second energy accumulator, wherein the first energy accumulator is connected with large cavities of the first and the second suspended oil cylinders through a first suspended valve bank; the second energy accumulator is connected with small cavities of the first and the second suspended oil cylinders through a second suspended valve bank; a first control valve is arranged on a hydraulic pipeline for connecting the first suspended valve bank with the large cavities of the first and the second suspended oil cylinders; and a second control valve is arranged on a hydraulic pipeline for communicating the second suspended valve bank with the small cavities of the first and the second suspended oil cylinders. The system has the advantages that system faults can be diagnosed simply and rapidly on the premise that system pressure is not released and the hydraulic pipelines are not detached, so the fault solving efficiency is improved. The utility model additionally discloses a crane provided with the oil gas suspension system.
Description
Technical field
The utility model relates to technical field of engineering machinery, the hydro-pneumatic suspension system of particularly full ground hoisting crane.The utility model also relates to the hoisting crane that is provided with said hydro-pneumatic suspension system.
Background technology
Full ground hoisting crane is a kind of hoisting crane that adopts special chassis, but has characteristics such as moving velocity is higher, maneuverability property good, driving comfort is good, the high land locomotion of transaction capabilities.
Suspension system is the very important necessary constituent elements of full ground hoisting crane; Its function is to act on the vertical reaction on the wheel, vertical counter-force and lateral reaction to the road surface; And the transmission of torque that these counter-forces caused is to vehicle frame; Guarantee the cruising of vehicle, also play buffer shock-absorbing, wheel guiding, prevent effect such as vehicle body lateral inclination.
Please refer to Fig. 1, Fig. 1 is the integral structure scheme drawing of the full ground of a kind of representative type hoisting crane in the prior art.
The suspension of vehicle is of a great variety, and hydro-pneumatic suspension system 2 is exclusive technology of full ground hoisting crane 1, has multi-axis balancing, increases the complete machine roll rate, overcomes to brake and lean forward, regulate functions such as chassis frame height and locked suspension.
Please refer to Fig. 2, Fig. 2 is the partial schematic diagram of hydro-pneumatic suspension system shown in Fig. 1.
Hydro-pneumatic suspension system 2 mainly is made up of hanging oil cylinder 2-1, energy storage 2-2, suspension valve group 2-3; Wherein hanging oil cylinder 2-1 plays the effect that connects vehicle bridge 3 and vehicle frame 4; And have vehicle frame 4 function with leveling of going up and down; Energy storage 2-2 plays the effect of conversion, buffering and the absorbed oscillation of energy, and suspension valve group 2-3 plays the up-down and the manual leveling function of control vehicle frame 4.
As can be seen from the figure, in hydro-pneumatic suspension system, generally will hang valve group 2-3 and energy storage 2-2 direct connection becomes single piece, be connected with hanging oil cylinder 2-1 through hydraulic tubing then.
Above-mentioned hydro-pneumatic suspension system has functions such as regulating chassis frame height and locked suspension, when the suspension function et out of order, and the hanging oil cylinder 2-1 in the hydro-pneumatic suspension system or hang valve group 2-3 and fault has taken place energy storage 2-2 single piece just.Because energy storage 2-2 is simple in structure, manufacturing technology is ripe; The fault rate that this element takes place is extremely low; And suspension valve group 2-3 is the integration member of multiple hydraulic valve, so the fault rate that this total member takes place is higher, hanging oil cylinder 2-1 is the direct force-summing element in the suspension system; Use is frequent and operating mode is complicated, so the fault rate that this element takes place is also high.
Thus it is clear that,, cause the hydro-pneumatic suspension system fault rate higher relatively owing to receive the restriction of element faults itself rate; In case and hydro-pneumatic suspension system et out of order; To cause the vehicle can't cruising, so when this system breaks down, will cause bigger economic loss to the user.
Hanging oil cylinder is connected through hydraulic tubing with suspension valve group in the existing hydro-pneumatic suspension system; When suspension system is accomplished assembling; Through the system debug rear-suspension system is normal operation, and will store pressure in the system this moment, and any element and pipeline cannot arbitrarily be dismantled; If need carry out disassemble and assemble work to system in the maintenance, can implement after must the pressure in the system being discharged.
Prior art must be carried out when diagnosis hydro-pneumatic suspension system fault as follows:
Whether step 3 starts vehicle and the hoisting crane supporting leg is stretched out and makes it liftoff, observe first hanging oil cylinder and can slowly fall; If fall, then this hanging oil cylinder is damaged, need change it; If the whereabouts phenomenon does not take place, then recover being connected of first pipeline and first hanging oil cylinder.
Step 5; Start vehicle once more and the hoisting crane supporting leg is stretched out liftoff, observe second hanging oil cylinder equally and whether can fall, if fall; Then second hanging oil cylinder is damaged; Need change it,, judge that then vehicle damages side mounting valve group and it is changed if the whereabouts phenomenon does not take place.
There is following defective in above-mentioned hydro pneumatic suspension fault diagnosis model:
One of which, troubleshooting step is numerous and diverse, and maintenance efficiency is low, and misoperation high-voltage oil liquid possibly occur and spray the safety misadventure of hurting sb.'s feelings.
Its two, need delivery system pressure, will reduce as far as possible in the hoisting crane chassis after pressure release, causes service clearance to diminish, and causes maintenance operation inconvenience.
They are three years old; Need dismantle system's hydraulic tubing; And the dismounting of hydraulic tubing will inevitably cause overflowing of system's hydraulic oil liquid, not only can contaminated site and environment, and can influence the cleanliness level of hydraulic oil liquid; Causes system receives secondary pollution, and the system after the pollution is et out of order and damage more easily.
Therefore, how at delivery system pressure not, do not carry out diagnosing the fault of hydro-pneumatic suspension system simply, apace under the prerequisite of hydraulic tubing dismounting, and then improve fault and solve efficient, be the present technical issues that need to address of those skilled in the art.
The utility model content
First purpose of the utility model provides a kind of hydro-pneumatic suspension system.This system at delivery system pressure not, do not carry out under the prerequisite of hydraulic tubing dismounting, can be simply, diagnostic system fault apace, solve efficient thereby improve fault.
Second purpose of the utility model provides a kind of hoisting crane that is provided with said hydro-pneumatic suspension system.
In order to realize above-mentioned first purpose; The utility model provides a kind of hydro-pneumatic suspension system; Comprise first hanging oil cylinder, second hanging oil cylinder, first energy storage and second energy storage; Said first energy storage connects the big chamber of said first hanging oil cylinder and second hanging oil cylinder through the first suspension valve group; Said second energy storage through the second suspension valve group connect said first hanging oil cylinder and second hanging oil cylinder loculus; The said first suspension valve group is provided with first control cock with the hydraulic tubing that the big chamber of said first hanging oil cylinder and second hanging oil cylinder is connected, and the said second suspension valve group is provided with second control cock with the hydraulic tubing that the loculus of said first hanging oil cylinder and second hanging oil cylinder is connected.
Preferably, said first control cock and second control cock all have first hydraulic fluid port, second hydraulic fluid port and the 3rd hydraulic fluid port, and have three mode of operations: at first mode of operation, said first hydraulic fluid port, second hydraulic fluid port and the 3rd hydraulic fluid port are interconnected; At second mode of operation, said first hydraulic fluid port is communicated with second hydraulic fluid port, and said the 3rd hydraulic fluid port is closed; At the 3rd mode of operation, said first hydraulic fluid port is communicated with the 3rd hydraulic fluid port, and said second hydraulic fluid port is closed; First hydraulic fluid port of said first control cock connects the big chamber that the said first suspension valve group, second hydraulic fluid port and the 3rd hydraulic fluid port are connected said first hanging oil cylinder and second hanging oil cylinder respectively, and first hydraulic fluid port of said second control cock connects the loculus that the said second suspension valve group, second hydraulic fluid port and the 3rd hydraulic fluid port are connected said first hanging oil cylinder and second hanging oil cylinder respectively.
Preferably, said first control cock and second control cock are the 3-position-3-way change-over valve.
Preferably, said first control cock and second control cock are specially tee ball valve.
Preferably, said tee ball valve is a hand valve, which is provided with control handle.
Preferably, it is first single piece that said first energy storage and the first suspension valve group are rigidly connected, and it is second single piece that said second energy storage and the second suspension valve group are rigidly connected.
In order to realize above-mentioned second purpose, the utility model provides a kind of hoisting crane, comprises vehicle frame and vehicle bridge, and said vehicle frame is connected with the hanging oil cylinder of vehicle bridge through hydro-pneumatic suspension system, and said hydro-pneumatic suspension system is above-mentioned hydro-pneumatic suspension system.
Preferably, said first single piece and second single piece lay respectively at said vehicle frame both sides.
In order to realize above-mentioned second purpose, the utility model also provides a kind of hoisting crane, comprises vehicle frame and vehicle bridge, and said vehicle frame is connected with the hanging oil cylinder of vehicle bridge through hydro-pneumatic suspension system, and said hydro-pneumatic suspension system is above-mentioned each described hydro-pneumatic suspension system.
Preferably, be specially wheel crane.
The hydro-pneumatic suspension system that the utility model provided has additional control cock on each suspension valve group and oil circuit that hanging oil cylinder is connected; Rely on control cock to switch the break-make pattern that respectively hangs hydraulic circuit between valve group and the hanging oil cylinder; Reacting phenomenon through to system element under the break-make pattern compares; Thereby judge the fault of suspension system fast and accomplish maintenance, owing to can judge and keep in repair the system failure through operation control valve, so need not suspension system pressure is discharged; Also need not hydraulic tubing is dismantled and shutoff; Avoided the improper of pressure release operation to maintaining personnel's injury, also avoided the hydro pneumatic suspension hydraulic efficiency pressure system pollute once more and to the pollution of environment, its trouble diagnosing is simple, convenient, time saving and energy saving; Improve fault greatly and solved efficient, helped to create bigger economic benefit.
In a kind of specific embodiment, said first control cock and second control cock are specially tee ball valve.Through being set, tee ball valve can accomplish switching to oil circuit break-make pattern in hydraulic plumbing system; And tee ball valve is the precise hydraulic element; Have zero leakage during closed condition, bear characteristics such as pressure height; Can satisfy the operating needs of hydro-pneumatic suspension system, improve the safety and the stability of hydro-pneumatic suspension system.
The hoisting crane that the utility model provided is provided with above-mentioned hydro-pneumatic suspension system, because above-mentioned hydro-pneumatic suspension system has above-mentioned technique effect, the hoisting crane with this hydro-pneumatic suspension system also should possess the corresponding techniques effect.
Description of drawings
Fig. 1 is the integral structure scheme drawing of the full ground of a kind of representative type hoisting crane in the prior art;
Fig. 2 is the partial schematic diagram of hydro-pneumatic suspension system shown in Fig. 1;
Fig. 3 is the partial schematic diagram of a kind of specific embodiment of hydro-pneumatic suspension system that the utility model provides;
Fig. 4 is the structural representation of tee ball valve shown in Fig. 3;
Fig. 5 is the hydraulic schematic diagram of tee ball valve shown in Fig. 4.
Among Fig. 1 to Fig. 2:
1. hoisting crane 2. hydro-pneumatic suspension system 2-1. hanging oil cylinder 2-2. energy storage 2-3. hang valve group 3. vehicle bridge 4. vehicle frames
Among Fig. 3 to Fig. 5:
10-1. the first hanging oil cylinder 10-2., the second hanging oil cylinder 20-1., the first energy storage 30-1., the first suspension valve group, 40. vehicle bridge, 50. vehicle frame 60-1., the first control cock 60-2., second control cock
The specific embodiment
The core of the utility model provides a kind of hydro-pneumatic suspension system.This system at delivery system pressure not, do not carry out under the prerequisite of hydraulic tubing dismounting, can be simply, diagnostic system fault apace, solve efficient thereby improve fault.
Another core of the utility model provides the hoisting crane that is provided with said hydro-pneumatic suspension system.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is done further to specify below in conjunction with the accompanying drawing and the specific embodiment.
Terms such as " first, second " among this paper only is for the ease of describing, and with the different constituent elementss that differentiation has same names, does not represent successively or the primary and secondary relation.
Please refer to Fig. 3, Fig. 3 is the partial schematic diagram of a kind of specific embodiment of hydro-pneumatic suspension system that the utility model provides.
In a kind of specific embodiment; The hydro-pneumatic suspension system that the utility model provides; Mainly by component set-ups such as the first hanging oil cylinder 10-1, the second hanging oil cylinder 10-2, the first energy storage 20-1, second energy storage, the first suspension valve group 30-1 and the second suspension valve groups; Wherein second energy storage and the second suspension valve group are arranged in the opposite side of vehicle frame, because hiding relation omits in the drawings.
The first hanging oil cylinder 10-1 is used to be connected vehicle bridge 40 and vehicle frame 50 with the second hanging oil cylinder 10-2; Itself and vehicle frame 50 bonded assemblys one end relative fixed; Can stretch back and forth with vehicle bridge 40 bonded assemblys one end, through regulating the first hanging oil cylinder 10-1 and the second hanging oil cylinder 10-2 can go up and down and leveling to vehicle frame 50.
The first suspension valve group 30-1 and the second suspension valve group play the function of 50 up-downs of control vehicle frame and manual leveling.
The first energy storage 20-1 and second energy storage play the effect of conversion, buffering and the absorbed oscillation of energy; Wherein to be rigidly connected be first single piece for the first energy storage 20-1 and the first suspension valve group 30-1; It is second single piece that second energy storage and the second suspension valve group are rigidly connected, and first single piece and second single piece are arranged in vehicle frame 50 both sides respectively.
The first energy storage 20-1 connects the big chamber of the first hanging oil cylinder 10-1 and the second hanging oil cylinder 10-2 through the first suspension valve group 30-1, second energy storage through the second suspension valve group connect the first hanging oil cylinder 10-1 and the second hanging oil cylinder 10-2 loculus.
Because the first hanging oil cylinder 10-1 and the second hanging oil cylinder 10-2 are direct force-summing elements; Use is frequent and operating mode is complicated; Therefore the rate of breakdown of this element is higher relatively; The first suspension valve group 30-1 and second hangs the valve group owing to be total member of multiple hydraulic valve, so rate of breakdown is also higher.
For at delivery system pressure not, do not carry out can diagnosing the fault of hydro-pneumatic suspension system simply, apace under the prerequisite of hydraulic tubing dismounting, can on each hangs valve group and oil circuit that hanging oil cylinder is connected, set up control cock, specific as follows:
On the first suspension valve group 30-1 and hydraulic tubing that the big chamber of the first hanging oil cylinder 10-1 and the second hanging oil cylinder 10-2 is connected, the first control cock 60-1 is set, hangs on valve group and the hydraulic tubing that the loculus of the first hanging oil cylinder 10-1 and the second hanging oil cylinder 10-2 is connected second the second control cock 60-2 is set.
The first control cock 60-1 and the second control cock 60-2 are the 3-position-3-way change-over valve; Specifically can select tee ball valve for use; Tee ball valve is the precise hydraulic element; Have zero leakage during closed condition, bear characteristics such as pressure height, can satisfy the operating needs of hydro-pneumatic suspension system, improve the safety and the stability of hydro-pneumatic suspension system.
Please refer to Fig. 4, Fig. 5, Fig. 4 is the structural representation of tee ball valve shown in Fig. 3; Fig. 5 is the hydraulic schematic diagram of tee ball valve shown in Fig. 3.
This tee ball valve has the first hydraulic fluid port A, the second hydraulic fluid port B and the 3rd hydraulic fluid port C, and has three control positioies: when tee ball valve was in meta, the first hydraulic fluid port A, the second hydraulic fluid port B and the 3rd oily C mouth were interconnected; When tee ball valve was in position, a left side, the first hydraulic fluid port A was communicated with the second hydraulic fluid port B, and the 3rd hydraulic fluid port C closes; When tee ball valve was in right position, the first hydraulic fluid port A was communicated with the 3rd hydraulic fluid port C, and the second hydraulic fluid port B closes.
The first hydraulic fluid port A of the first control cock 60-1 connects the big chamber that the first suspension valve group 30-1, the second hydraulic fluid port B and the 3rd hydraulic fluid port C are connected the first hanging oil cylinder 10-1 and the second hanging oil cylinder 10-2 respectively, first hydraulic fluid port A connection, the second suspension valve group of the second control cock 60-2, the second hydraulic fluid port B are connected the first hanging oil cylinder 10-1 and the second hanging oil cylinder 10-2 with the 3rd hydraulic fluid port C loculus.
For ease of manual operation, above-mentioned tee ball valve is hand valve, which is provided with control handle.
When the hydro-pneumatic suspension system et out of order; Carry out as follows: the first control cock 60-1 shown in will scheming and the second control cock 60-2 switch to right position respectively; Can the first hanging oil cylinder 10-1 be placed the state of blocking, the hoisting crane supporting leg stretched out judge then; Otherwise, when the first control cock 60-1 shown in will scheming and the second control cock 60-2 switch to position, a left side respectively, can the second hanging oil cylinder 10-2 be placed the state of blocking, carry out fault judgement then.
Above-mentioned hydro-pneumatic suspension system relies on control cock to switch the break-make pattern that respectively hangs hydraulic circuit between valve group and the hanging oil cylinder; Reacting phenomenon through to system element under the break-make pattern compares; Thereby judge the fault of suspension system fast and accomplish maintenance, owing to can judge and keep in repair the system failure through operation control valve, so need not suspension system pressure is discharged; Also need not hydraulic tubing is dismantled and shutoff; Avoided the improper of pressure release operation to maintaining personnel's injury, also avoided the hydro pneumatic suspension hydraulic efficiency pressure system pollute once more and to the pollution of environment, its trouble diagnosing is simple, convenient, time saving and energy saving; Improve fault greatly and solved efficient, helped to create bigger economic benefit.
Above-mentioned hydro-pneumatic suspension system only is a kind of preferred version, and its concrete mode is not limited thereto, and can make pointed adjustment according to actual needs on this basis, thereby obtain different embodiment.
For example can at each mouth that hangs the valve group after three-way piece be divided into two branch roads, on-off valve be set separately respectively on each branch road control, two on-off valves of promptly same suspension valve assembly can be realized the utility model purpose equally.
But this mode is compared with the mode that tee ball valve is set; The advantage of tee ball valve is more obvious, and on the one hand, the control cock quantity that the former needs is more; And the control cock negligible amounts that the latter needs; On the other hand, when carrying out trouble diagnosing, the former needs the control cock quantity of operation simultaneously also more than the latter.
Except above-mentioned hydro-pneumatic suspension system; The utility model also provides a kind of hoisting crane; Comprise vehicle frame and vehicle bridge, said vehicle frame is connected with the hanging oil cylinder of vehicle bridge through hydro-pneumatic suspension system, and said hydro-pneumatic suspension system is a hydro-pneumatic suspension system mentioned above; All the other structures please refer to prior art, and this paper repeats no more.
Particularly; Said hoisting crane is a wheel crane; It is first single piece that said first energy storage and the first suspension valve group are rigidly connected, and it is second single piece that said second energy storage and the second suspension valve group are rigidly connected, and said first single piece and second single piece lay respectively at said vehicle frame both sides.
Here need to prove that the vehicle bridge quantity of hoisting crane can be even number or odd number, if vehicle bridge quantity is even number; Need configuration one cover hydro-pneumatic suspension system between then per two adjacent vehicle bridge and the vehicle frame; If vehicle bridge quantity is odd number, then last independent vehicle bridge and the hydro-pneumatic suspension system between the vehicle frame need be simplified, owing to there has not been second hanging oil cylinder; Therefore on its suspension valve group and the oil circuit that first hanging oil cylinder is connected on-off valve can only be set, and tee ball valve no longer is set.
More than hydro-pneumatic suspension system and hoisting crane that the utility model provided have been carried out detailed introduction.Used concrete example among this paper the principle and the embodiment of the utility model are set forth, the explanation of above embodiment just is used to help to understand the core concept of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. hydro-pneumatic suspension system; Comprise first hanging oil cylinder, second hanging oil cylinder, first energy storage and second energy storage; Said first energy storage connects the big chamber of said first hanging oil cylinder and second hanging oil cylinder through the first suspension valve group; Said second energy storage through the second suspension valve group connect said first hanging oil cylinder and second hanging oil cylinder loculus; It is characterized in that; The said first suspension valve group is provided with first control cock with the hydraulic tubing that the big chamber of said first hanging oil cylinder and second hanging oil cylinder is connected, and the said second suspension valve group is provided with second control cock with the hydraulic tubing that the loculus of said first hanging oil cylinder and second hanging oil cylinder is connected.
2. hydro-pneumatic suspension system according to claim 1; It is characterized in that; Said first control cock and second control cock all have first hydraulic fluid port, second hydraulic fluid port and the 3rd hydraulic fluid port; And have three mode of operations: at first mode of operation, said first hydraulic fluid port, second hydraulic fluid port and the 3rd hydraulic fluid port are interconnected; At second mode of operation, said first hydraulic fluid port is communicated with second hydraulic fluid port, and said the 3rd hydraulic fluid port is closed; At the 3rd mode of operation, said first hydraulic fluid port is communicated with the 3rd hydraulic fluid port, and said second hydraulic fluid port is closed; First hydraulic fluid port of said first control cock connects the big chamber that the said first suspension valve group, second hydraulic fluid port and the 3rd hydraulic fluid port are connected said first hanging oil cylinder and second hanging oil cylinder respectively, and first hydraulic fluid port of said second control cock connects the loculus that the said second suspension valve group, second hydraulic fluid port and the 3rd hydraulic fluid port are connected said first hanging oil cylinder and second hanging oil cylinder respectively.
3. hydro-pneumatic suspension system according to claim 2 is characterized in that, said first control cock and second control cock are the 3-position-3-way change-over valve.
4. hydro-pneumatic suspension system according to claim 3 is characterized in that, said first control cock and second control cock are specially tee ball valve.
5. hydro-pneumatic suspension system according to claim 4 is characterized in that said tee ball valve is a hand valve, which is provided with control handle.
6. according to each described hydro-pneumatic suspension system of claim 1 to 5, it is characterized in that it is first single piece that said first energy storage and the first suspension valve group are rigidly connected, it is second single piece that said second energy storage and the second suspension valve group are rigidly connected.
7. a hoisting crane comprises vehicle frame and vehicle bridge, and said vehicle frame is connected with the hanging oil cylinder of vehicle bridge through hydro-pneumatic suspension system, it is characterized in that, said hydro-pneumatic suspension system is aforesaid right requirement 6 described hydro-pneumatic suspension systems.
8. hoisting crane according to claim 7 is characterized in that, said first single piece and second single piece lay respectively at said vehicle frame both sides.
9. a hoisting crane comprises vehicle frame and vehicle bridge, and said vehicle frame is connected with the hanging oil cylinder of vehicle bridge through hydro-pneumatic suspension system, it is characterized in that, said hydro-pneumatic suspension system is aforesaid right requirement 1 to 6 each described hydro-pneumatic suspension system.
10. hoisting crane according to claim 9 is characterized in that, is specially wheel crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204025531U CN202319799U (en) | 2011-10-20 | 2011-10-20 | Oil gas suspension system and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204025531U CN202319799U (en) | 2011-10-20 | 2011-10-20 | Oil gas suspension system and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202319799U true CN202319799U (en) | 2012-07-11 |
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ID=46431791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204025531U Expired - Fee Related CN202319799U (en) | 2011-10-20 | 2011-10-20 | Oil gas suspension system and crane |
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| Country | Link |
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| CN (1) | CN202319799U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106461504A (en) * | 2014-04-28 | 2017-02-22 | 香港浸会大学 | Diagnosis of internal combustion engine performance |
-
2011
- 2011-10-20 CN CN2011204025531U patent/CN202319799U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106461504A (en) * | 2014-04-28 | 2017-02-22 | 香港浸会大学 | Diagnosis of internal combustion engine performance |
| CN106461504B (en) * | 2014-04-28 | 2019-04-02 | 香港浸会大学 | The diagnosis of Explosive Motor Behavior |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20191020 |
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| CF01 | Termination of patent right due to non-payment of annual fee |