CN202703372U - Demountable tanker carrier and stall protective system thereof - Google Patents
Demountable tanker carrier and stall protective system thereof Download PDFInfo
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- CN202703372U CN202703372U CN 201220352022 CN201220352022U CN202703372U CN 202703372 U CN202703372 U CN 202703372U CN 201220352022 CN201220352022 CN 201220352022 CN 201220352022 U CN201220352022 U CN 201220352022U CN 202703372 U CN202703372 U CN 202703372U
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Abstract
The utility model provides a stall protective system of a demountable tanker carrier. A main oil cylinder is connected to a lifting arm of the demountable tanker carrier, a working opening of a first electric control reversing valve is connected with the main oil cylinder, an oil return opening of the first electric control reversing valve is connected with an oil return channel, the first electric control reversing valve is used for controlling reversing of the main oil cylinder, and a one-way orifice valve and a first electromagnetic valve are arranged in parallel on an oil channel consisting of a rodless cavity of the main oil cylinder and the first electric control reversing valve. The demountable tanker carrier further comprises a speed sensor and a first controller, wherein the speed sensor is arranged on the lifting arm of the demountable tanker carrier and used for detecting the moving speed of the lifting arm; the first controller is used for sending a first electrical signal to the first electromagnetic valve when the moving speed of the lifting arm exceeds a speed threshold value and switching off the first electromagnetic valve, so that hydraulic oil in the rodless cavity of the main oil cylinder returns to an oil box through the one-way orifice valve. According to the technical scheme disclosed by the utility model, large impact on a rack by a stalled silo when a balance valve breaks down can be avoided. The utility model further provides the demountable tanker carrier.
Description
Technical field
The utility model relates to engineering machinery field, in particular to demountable tanker carrier stall protection system and demountable tanker carrier.
Background technology
At present, the general M/C that adopts of demountable tanker carrier operation, whole hydraulic efficiency pressure system is fairly simple, mainly comprises lifting hydraulic system, movable hydraulic system and supporting leg hydraulic efficiency pressure system three parts, except finishing normal knapsack, unloading the tank fundamental operation, seldom consider other safety measure.Yet find in actual applications, there is very large potential safety hazard in the hydraulic efficiency pressure system of demountable tanker carrier: for example, the balance cock of working connection is installed not firm or is broken down, when transferring silo, silo can descend in stall, and frame is caused enormous impact, causes the fault on frame or chassis.
Therefore, need a kind of demountable tanker carrier stall protection technology, can avoid above-mentioned accident.
The utility model content
Consider the above-mentioned background technology, a purpose of the present utility model provides a kind of demountable tanker carrier stall protection system, can be used as the two-fold protection of lifting action, when avoiding silo stall to descend frame is caused enormous impact.
According to an aspect of the present utility model, a kind of demountable tanker carrier stall protection system is provided, comprise master cylinder, the first electric control reversing valve, one-way damper valve, the first electromagnetic valve and pressure oil-source, wherein, the oil inlet of described the first electric control reversing valve is connected to the oil outlet of pressure oil-source, the working hole of described the first electric control reversing valve is connected to described master cylinder, the return opening of described the first electric control reversing valve connects oil return line, described the first electric control reversing valve is used for controlling the action of described master cylinder, described master cylinder is used for the lift arm of the described demountable tanker carrier of lifting, described one-way damper valve and described the first electromagnetic valve are arranged in parallel on the oil circuit of described master cylinder rodless cavity and described the first electric control reversing valve composition, also comprise: speed sensor and the first controller, wherein, described speed sensor is installed on the lift arm of described demountable tanker carrier, for detection of the kinematic velocity of described lift arm; Described the first controller receives the speed signal from described speed sensor, when the kinematic velocity of described lift arm exceeds threshold speed, send the first electric signal to described the first electromagnetic valve, control described the first electromagnetic valve commutation, make the hydraulic oil of the rodless cavity of described master cylinder pass through described one-way damper valve oil sump tank.
In the lifting hydraulic system of demountable tanker carrier, stall descends or the impact vehicle frame in the time of can effectively preventing that silo from transferring by balance cock, if balance cock breaks down, then silo still can descend in stall, and frame is produced enormous impact, causes the fault on frame or chassis.For fear of this fault, speed sensor, one-way damper valve, the first electromagnetic valve have been increased, during normal operation, this first electromagnetic valve is opened, when balance cock broke down, this first solenoid closure made the hydraulic oil of master cylinder by the one-way damper valve oil sump tank, increase the backflow resistance, and then reduce the kinematic velocity of lift arm.
In technique scheme, preferably, described the first controller also is connected to described the first electric control reversing valve, when sending the first electric signal to described the first electromagnetic valve, also send the second electric signal to described the first electric control reversing valve, to reduce the aperture of described the first electric control reversing valve.
Reduce simultaneously the aperture for the first electric control reversing valve of control master cylinder commutation, further increase the oil return resistance, back pressure increases, and the descending speed of silo slows down, and can effectively alleviate lift arm to the impact of frame.
In technique scheme, preferably, can also comprise: support oil cylinder, the 3rd electric control reversing valve, the first pressure sensor and second controller, wherein, the oil inlet of described the 3rd electric control reversing valve is connected to the oil outlet of described pressure oil-source, the working hole of described the 3rd electric control reversing valve is connected to described support oil cylinder, the return opening of described the 3rd electric control reversing valve connects oil return line, described the 3rd electric control reversing valve is used for the action of control support oil cylinder, described support oil cylinder is used for the control supporting leg and shrinks or stretch, described the first pressure sensor is for detection of the pressure of the rodless cavity of described support oil cylinder; Described second controller receives the pressure signal from described the first pressure sensor, during more than or equal to setting value, sends three electric signal to described the first electric control reversing valve at the pressure of described support oil cylinder; Described the first electric control reversing valve is controlled described master cylinder and is begun action when the 3rd electric signal that receives from described second controller.
Can detect the pressure of support oil cylinder by the first pressure sensor, when pressure during greater than setting value, illustrate that supporting leg opens, can notify the first electric control reversing valve to commutate this moment, master cylinder begins action, can guarantee that so just supporting leg is opened when master cylinder moves, and has avoided the danger of tumbling.
In technique scheme, preferably, can also comprise: Shift cylinder, the second electric control reversing valve and switch valve, wherein, the oil inlet of described the second electric control reversing valve is connected to the oil outlet of described pressure oil-source, and the return opening of described the second electric control reversing valve connects oil return line, and the working hole of described the second electric control reversing valve is connected to described Shift cylinder, described the second electric control reversing valve is used for controlling the action of described Shift cylinder, and described Shift cylinder is used for the silo of mobile described demountable tanker carrier; Described switch valve arranges on the oil circuit that the rodless cavity of described Shift cylinder and described the second electric control reversing valve form, and when the weight overload of described silo, the pressure oil of the rodless cavity of described Shift cylinder is let out to oil return line, to stop the action of described Shift cylinder.
Shift cylinder belongs to the main element in the movable hydraulic system, be used for the silo that mobile demountable tanker carrier transports, the powder that fills in the silo is more, the pressure oil of rodless cavity that then enters Shift cylinder is more, when the powder overflow fixed load in the silo, switch valve is opened, and the pressure oil in the rodless cavity in the Shift cylinder is by the switch valve oil sump tank, Shift cylinder stops action, so just can effectively avoid overweight other faults that cause of load.
In technique scheme, preferably, described switch valve comprises by pass valve or unloader valve, when the weight overload of described silo, pressure on the oil circuit of the rodless cavity of described Shift cylinder exceeds the pressure threshold of described by pass valve or described unloader valve, and described by pass valve or described unloader valve are carried out the draining action.
In technique scheme, preferably, when described switch valve comprises the second electromagnetic valve, described demountable tanker carrier stall protection system also comprises the second pressure sensor and the 3rd controller, described the second pressure sensor is used for detecting the pressure of described Shift cylinder when described Shift cylinder moves described silo; Described the 3rd controller receives the pressure signal from described the second pressure sensor, whether the pressure of judging described Shift cylinder according to described pressure signal exceeds pressure threshold, when exceeding described pressure threshold, transmit control signal to described the second electromagnetic valve, described the second electromagnetic valve commutates after receiving described control signal, so that pressure oil is leaked into oil return line.
When switch valve is electrically-controlled valve; then need to increase corresponding detecting element and corresponding electric-control system; detecting element i.e. the second pressure sensor; electric-control system is controller, and controller judges according to pressure signal whether silo overloads, when overload; control the commutation of the second electromagnetic valve; can play equally the effect of off-load, stop the Shift cylinder action, the protection hydraulic efficiency pressure system.
In technique scheme, preferred, described the second pressure sensor is installed in the rodless cavity place of described Shift cylinder.
In technique scheme, preferred, described the second pressure sensor is installed on the oil circuit of rodless cavity of described Shift cylinder.
According on the other hand of the present utility model, a kind of demountable tanker carrier also is provided, comprise such as the demountable tanker carrier stall protection system described in above-mentioned arbitrary technical scheme.
Therefore, according to the technical solution of the utility model, must launch first supporting leg during hydraulic work system, when the pressure of supporting leg oil circuit reached setting value, pressure sensor sent signal to the master cylinder change-over valve, and master cylinder can move; When powder in the silo surpassed rated load, nominal load, the by pass valve in the mobile oil circuit reaches setting pressure to be opened, and fluid is by the by pass valve oil sump tank, and Shift cylinder stops action, so just can effectively avoid the overweight caused fault of load.When each element works in the system, stall descended and impacts vehicle frame when the balance cock in the master cylinder oil circuit can prevent effectively that silo from transferring, if balance cock breaks down, when silo stall descends, when being installed in descending speed that speed sensor on the demountable tanker carrier lift arm detects lift arm and surpassing setting value, speed sensor namely sends signal to the second electromagnetic valve, switches oil circuit, increase the back pressure of oil return line, slow down silo to the impact of frame.And this apparatus structure is simple, and stable performance, is easy to realize good reliability.
Description of drawings
Fig. 1 is the schematic diagram according to the demountable tanker carrier stall protection system of embodiment of the present utility model;
Fig. 2 is the schematic diagram according to the demountable tanker carrier of embodiment of the present utility model.
The specific embodiment
In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments the utility model is further described in detail.
A lot of details have been set forth in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection domain of the present utility model is not subjected to the restriction of following public specific embodiment.
Below in conjunction with drawings and Examples the utility model is described further.Need to prove, in the situation that do not conflict, the application's embodiment and the feature among the embodiment can make up mutually.
Fig. 1 is the schematic diagram according to the demountable tanker carrier stall protection system of embodiment of the present utility model.Fig. 2 is the schematic diagram according to the demountable tanker carrier of embodiment of the present utility model.
As depicted in figs. 1 and 2, demountable tanker carrier stall protection system according to embodiment of the present utility model, comprise master cylinder 20, the first electric control reversing valve 11, one-way damper valve 2, the first electromagnetic valve 3 and pressure oil-source, wherein, the oil inlet of described the first electric control reversing valve 11 is connected to the oil outlet of pressure oil-source, the working hole of described the first electric control reversing valve 11 is connected to described master cylinder 20, the return opening of described the first electric control reversing valve 11 connects oil return line, described the first electric control reversing valve 11 is used for controlling the action of described master cylinder 20, described master cylinder 20 is used for the lift arm of the described demountable tanker carrier of lifting, described one-way damper valve 2 is arranged in parallel on the oil circuit of described master cylinder 20 rodless cavities and described the first electric control reversing valve 11 compositions with described the first electromagnetic valve 3, this demountable tanker carrier stall protection system can also comprise speed sensor 202 and the first controller, speed sensor 202 is installed on the lift arm 206 of demountable tanker carrier, for detection of the kinematic velocity of lift arm 206; The first controller receives the speed signal from speed sensor 202, when the kinematic velocity that detects lift arm 206 exceeds threshold speed, send the first electric signal to the first electromagnetic valve 3, control 3 commutations of the first electromagnetic valve, make the hydraulic oil of the rodless cavity of master cylinder 20 pass through one-way damper valve 2 oil sump tanks.
In the lifting hydraulic system of demountable tanker carrier, stall descends or the impact vehicle frame in the time of can preventing that effectively silo 210 from transferring by balance cock 4, if balance cock breaks down, and then silo 210 or meeting stall decline, and to frame generation enormous impact, cause the fault on frame or chassis.For fear of this fault, speed sensor 202, one-way damper valve 2, the first electromagnetic valve 3 have been increased, during normal operation, this first electromagnetic valve 3 is opened, when balance cock broke down, these the first electromagnetic valve 3 closures made the hydraulic oil of master cylinder 20 by one-way damper valve 2 oil sump tanks, increase the backflow resistance, and then reduce the kinematic velocity of lift arm 206.
In technique scheme, preferably, the first controller also is connected to the first electric control reversing valve 11, the first controller is when sending the first electric signal to described the first electromagnetic valve 3, also send the second electric signal to described the first electric control reversing valve 11, to reduce the aperture of described the first electric control reversing valve 11.
Reduce simultaneously the aperture for the first electric control reversing valve 11 of control master cylinder 20 commutations, further increase the oil return resistance, back pressure increases, and the descending speed of silo 210 slows down, and can effectively alleviate the impact of 206 pairs of frames of lift arm.
In technique scheme, preferably, can also comprise: support oil cylinder 22, the 3rd electric control reversing valve 13, the first pressure sensor and second controller, wherein, the oil inlet of the 3rd electric control reversing valve 13 is connected to the oil outlet of pressure oil-source, the working hole of the 3rd electric control reversing valve 13 is connected to support oil cylinder 22, the return opening of the 3rd electric control reversing valve 13 connects oil return line, the 3rd electric control reversing valve 13 is used for the action of control support oil cylinder 22, support oil cylinder 22 is used for the control supporting leg and shrinks or stretch, the first pressure sensor is for detection of the pressure of the rodless cavity of support oil cylinder 22; Second controller receives the pressure signal from described the first pressure sensor, during more than or equal to setting value, sends three electric signal to described the first electric control reversing valve 11 at the pressure of support oil cylinder 22; The first electric control reversing valve 11 is arranged on the oil circuit of master cylinder 20, and when the 3rd electric signal that receives from the first pressure sensor 7, control master cylinder 20 begins action.
Can detect the pressure of support oil cylinder 22 by the first pressure sensor 7, when pressure during greater than setting value, illustrate that supporting leg 208 opened, can notify the first electric control reversing valve 11 to commutate this moment, the pressure oil of pump 1 pumping enters master cylinder 20 through the first electric control reversing valve 11, and master cylinder 20 begins action, so just can guarantee when master cylinder 20 action, supporting leg 208 has been opened, and has avoided the danger of tumbling.
Preferably, this demountable tanker carrier stall protection system can also comprise: Shift cylinder 21, the second electric control reversing valve 12 and switch valve 5, wherein, the oil inlet of described the second electric control reversing valve 12 is connected to the oil outlet of described pressure oil-source, the return opening of described the second electric control reversing valve 12 connects oil return line, the working hole of described the second electric control reversing valve 12 is connected to described Shift cylinder 21, described the second electric control reversing valve 12 is used for controlling the action of described Shift cylinder 21, and described Shift cylinder 21 is used for the silo of mobile described demountable tanker carrier; Switch valve 5 arranges on the rodless cavity of described Shift cylinder 21 and the oil circuit that described the second electric control reversing valve 12 forms, when the weight overload of silo 210, the pressure oil of the rodless cavity of Shift cylinder 21 is let out to oil return line, to stop the action of Shift cylinder 21, wherein, this Shift cylinder 21 is arranged on the lift arm 206 of demountable tanker carrier, the second electric control reversing valve 12 is arranged on the oil circuit of Shift cylinder 21, control described Shift cylinder 21 commutations, the silo 210 that makes Shift cylinder 21 drive demountable tanker carrier moves at lift arm 206.
In technique scheme, preferably, this switch valve 5 can comprise by pass valve or unloader valve (belonging to pilot operated valve device), when the weight overload of described silo 210, pressure on the oil circuit of the rodless cavity of Shift cylinder 21 exceeds the pressure threshold of by pass valve or unloader valve, and by pass valve or described unloader valve are carried out the draining action.
Preferably, when switch valve 5 comprises the second electromagnetic valve, described demountable tanker carrier stall protection system also comprises the second pressure sensor 202 and the 3rd controller (not shown), described the second pressure sensor 202 is used for detecting the pressure of described Shift cylinder 21 when described Shift cylinder 21 moves described silo 210; The 3rd controller is connected to the second pressure sensor 202, judge according to the pressure signal that the second pressure sensor 202 gathers whether the pressure of Shift cylinder 21 exceeds pressure threshold, when exceeding described pressure threshold, transmit control signal to the second electromagnetic valve, described the second electromagnetic valve commutates after receiving control signal, so that pressure oil is leaked into oil return line.
When switch valve 5 is electrically-controlled valve; then need to increase corresponding detecting element and corresponding electric-control system; detecting element i.e. the second pressure sensor; electric-control system is controller, and controller judges according to pressure signal whether silo 210 overloads, when overload; control the commutation of the second electromagnetic valve; can play equally the effect of off-load, stop Shift cylinder 21 actions, the protection hydraulic efficiency pressure system.
Should be appreciated that, above-mentioned the first controller, second controller and/or the 3rd controller can be same controllers, for example the treater of Texas Instrument's production.
In technique scheme, preferred, described the second pressure sensor is installed in the rodless cavity place of Shift cylinder 21, perhaps is installed on the oil circuit of rodless cavity of Shift cylinder 21.
According on the other hand of the present utility model, a kind of demountable tanker carrier also is provided, comprise such as the demountable tanker carrier stall protection system described in above-mentioned arbitrary technical scheme.
Therefore, according to the technical solution of the utility model, must launch first supporting leg during hydraulic work system, when the pressure of supporting leg oil circuit reached setting value, pressure sensor sent signal to the master cylinder change-over valve, and master cylinder can move; When powder in the silo surpassed rated load, nominal load, the by pass valve in the mobile oil circuit reaches setting pressure to be opened, and fluid is by the by pass valve oil sump tank, and Shift cylinder stops action, so just can effectively avoid the overweight caused fault of load.When each element works in the system, stall descended and impacts vehicle frame when the balance cock in the master cylinder oil circuit can prevent effectively that silo from transferring, if balance cock breaks down, when silo stall descends, when being installed in descending speed that speed sensor on the demountable tanker carrier lift arm detects lift arm and surpassing setting value, speed sensor namely sends signal to the second electromagnetic valve, switches oil circuit, increase the back pressure of oil return line, slow down silo to the impact of frame.And this apparatus structure is simple, and stable performance, is easy to realize good reliability.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. demountable tanker carrier stall protection system; comprise master cylinder (20); the first electric control reversing valve (11); one-way damper valve (2); the first electromagnetic valve (3) and pressure oil-source; wherein; the oil inlet of described the first electric control reversing valve (11) is connected to the oil outlet of pressure oil-source; the working hole of described the first electric control reversing valve (11) is connected to described master cylinder (20); the return opening of described the first electric control reversing valve (11) connects oil return line; described the first electric control reversing valve (11) is used for controlling the action of described master cylinder (20); described master cylinder (20) is used for the lift arm of the described demountable tanker carrier of lifting; described one-way damper valve (2) is arranged in parallel on the oil circuit of described master cylinder (20) rodless cavity and described the first electric control reversing valve (11) composition with described the first electromagnetic valve (3); it is characterized in that; also comprise: speed sensor (202) and the first controller; wherein
Described speed sensor (202) is installed on the lift arm of described demountable tanker carrier, for detection of the kinematic velocity of described lift arm;
Described the first controller receives the speed signal from described speed sensor (202), when the kinematic velocity of described lift arm exceeds threshold speed, send the first electric signal to described the first electromagnetic valve (3), control described the first electromagnetic valve (3) commutation, make the hydraulic oil of the rodless cavity of described master cylinder (20) pass through described one-way damper valve (2) oil sump tank.
2. demountable tanker carrier stall protection according to claim 1 system; it is characterized in that; described the first controller also is connected to described the first electric control reversing valve (11); when sending described the first electric signal to described the first electromagnetic valve (3); also send the second electric signal to described the first electric control reversing valve (11), to reduce the aperture of described the first electric control reversing valve (11).
3. the demountable tanker carrier stall protection system that states according to claim 1 is characterized in that, also comprises: support oil cylinder (22), the 3rd electric control reversing valve (13), the first pressure sensor and second controller, wherein,
The oil inlet of described the 3rd electric control reversing valve (13) is connected to the oil outlet of described pressure oil-source, the working hole of described the 3rd electric control reversing valve (13) is connected to described support oil cylinder (22), the return opening of described the 3rd electric control reversing valve (13) connects oil return line, described the 3rd electric control reversing valve (13) is used for the action of control support oil cylinder (22), described support oil cylinder (22) is used for the control supporting leg and shrinks or stretch, described the first pressure sensor is for detection of the pressure of the rodless cavity of described support oil cylinder (22);
Described second controller receives the pressure signal from described the first pressure sensor, during more than or equal to setting value, sends three electric signal to described the first electric control reversing valve (11) at the pressure of described support oil cylinder (22);
Described the first electric control reversing valve (11) is controlled described master cylinder (20) and is begun action when the 3rd electric signal that receives from described the first pressure sensor.
4. each described demountable tanker carrier stall protection system in 3 according to claim 1 is characterized in that, also comprises: Shift cylinder (21), the second electric control reversing valve (12) and switch valve (5), wherein,
The oil inlet of described the second electric control reversing valve (12) is connected to the oil outlet of described pressure oil-source, the return opening of described the second electric control reversing valve (12) connects oil return line, the working hole of described the second electric control reversing valve (12) is connected to described Shift cylinder (21), described the second electric control reversing valve (12) is used for controlling the action of described Shift cylinder (21), and described Shift cylinder (21) is used for the silo of mobile described demountable tanker carrier;
Described switch valve (5) arranges on the oil circuit that the rodless cavity of described Shift cylinder (21) and described the second electric control reversing valve (12) form, when the weight overload of described silo, the pressure oil of the rodless cavity of described Shift cylinder (21) is let out to oil return line, to stop the action of described Shift cylinder (21).
5. demountable tanker carrier stall protection according to claim 4 system; it is characterized in that; described switch valve (5) comprises by pass valve or unloader valve; when the weight overload of described silo; pressure on the oil circuit of the rodless cavity of described Shift cylinder (21) exceeds the pressure threshold of described by pass valve or described unloader valve, and described by pass valve or described unloader valve are carried out the draining action.
6. the demountable tanker carrier stall protection system that states according to claim 4, it is characterized in that, at described switch valve (5) when comprising the second electromagnetic valve, described demountable tanker carrier stall protection system also comprises the second pressure sensor and the 3rd controller, described the second pressure sensor is used for detecting the pressure of described Shift cylinder (21) when the mobile described silo of described Shift cylinder (21);
Described the 3rd controller receives the pressure signal from described the second pressure sensor, whether the pressure of judging described Shift cylinder (21) according to described pressure signal exceeds pressure threshold, when exceeding described pressure threshold, transmit control signal to described the second electromagnetic valve, described the second electromagnetic valve commutates after receiving described control signal, so that pressure oil is leaked into oil return line.
7. demountable tanker carrier stall protection according to claim 6 system is characterized in that, described the second pressure sensor is installed in the rodless cavity place of described Shift cylinder (21).
8. demountable tanker carrier stall protection according to claim 6 system is characterized in that, described the second pressure sensor is installed on the oil circuit of rodless cavity of described Shift cylinder (21).
9. a demountable tanker carrier is characterized in that, comprises such as each described demountable tanker carrier stall protection system in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220352022 CN202703372U (en) | 2012-07-19 | 2012-07-19 | Demountable tanker carrier and stall protective system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220352022 CN202703372U (en) | 2012-07-19 | 2012-07-19 | Demountable tanker carrier and stall protective system thereof |
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| Publication Number | Publication Date |
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| CN202703372U true CN202703372U (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220352022 Expired - Fee Related CN202703372U (en) | 2012-07-19 | 2012-07-19 | Demountable tanker carrier and stall protective system thereof |
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| CN (1) | CN202703372U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745156A (en) * | 2012-07-19 | 2012-10-24 | 三一重工股份有限公司 | Advanced protecting system and advanced protecting method for support legs of demountable tanker carrier |
| CN102745155A (en) * | 2012-07-19 | 2012-10-24 | 三一重工股份有限公司 | Overload protection system and overload protection method for demountable tanker carrier |
-
2012
- 2012-07-19 CN CN 201220352022 patent/CN202703372U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745156A (en) * | 2012-07-19 | 2012-10-24 | 三一重工股份有限公司 | Advanced protecting system and advanced protecting method for support legs of demountable tanker carrier |
| CN102745155A (en) * | 2012-07-19 | 2012-10-24 | 三一重工股份有限公司 | Overload protection system and overload protection method for demountable tanker carrier |
| CN102745156B (en) * | 2012-07-19 | 2014-12-10 | 三一重工股份有限公司 | Advanced protecting system and advanced protecting method for support legs of demountable tanker carrier |
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Granted publication date: 20130130 Termination date: 20150719 |
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| EXPY | Termination of patent right or utility model |