CN202543776U - Road roller and compaction device thereof - Google Patents
Road roller and compaction device thereof Download PDFInfo
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- CN202543776U CN202543776U CN 201220115230 CN201220115230U CN202543776U CN 202543776 U CN202543776 U CN 202543776U CN 201220115230 CN201220115230 CN 201220115230 CN 201220115230 U CN201220115230 U CN 201220115230U CN 202543776 U CN202543776 U CN 202543776U
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- eccentric shaft
- rotating speed
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- road roller
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Abstract
The utility model discloses a compaction device of a road roller. The compaction device comprises a wheel base (1) arranged on a frame of the road roller, wherein a first eccentric shaft (31) and a second eccentric shaft (32) which are parallel to each other are arranged in the wheel base (1); and the two eccentric shafts are respectively driven by independent power elements. Therefore, in the process of switching modes, shutdown is not required, and the initial positions of the two eccentric shafts can be adjusted manually, so that the mode switching process is simplified, and the mode switching efficiency is improved; and a central transmission shaft and a transmission mechanisms arranged between the central transmission shaft and the first eccentric shaft as well as between the central transmission shaft and the second eccentric shaft are not required by the compaction device, so the compaction device is simple in structure. The utility model also discloses the road roller with the compaction device.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of compaction apparatus that is used for road roller.The utility model also relates to a kind of road roller that comprises above-mentioned compaction apparatus.
Background technology
Road roller is that engineering machinery is used in a kind of road construction; The embankment compacting operation that is widely used in major works projects such as high-grade highway, railway, airfield runway, dam, stadium can be used for rolling sand property, half viscosity and clayed soil, subgrade stability soil and asphalt concrete pavement layer etc.Road roller is realized compacting operation through its compaction apparatus; Compaction apparatus is made up of one or more round metal cylindricality rollers or rubber tyre, and compaction apparatus rolls under the effect of its control system and/or vibration rock crushing, compacting soil, bituminous concrete or gravel.Compaction apparatus is the important component part of road roller, and its service behaviour directly has influence on the pressure road quality of road roller.
Three kinds of the main involving vibrations type of the job category of compaction apparatus, oscillation mode and vibration/oscillation modes; Wherein, The vibrating wheels of oscillating mode compaction apparatus is done circular vibration or vertical vibration around its how much axle center; Vibrating wheels is exerted pressure to soil through the power that produces unoriented power or vertical direction, thereby the excitation soil body makes it to produce omnidirectional vibration or vertical vibration; Vibration wave can continue diffusion and propagation along the depth direction during vibratory compaction in being compacted material, and deep layer is had good consolidation effect, and it is big that compacting influences the degree of depth; Compacting efficient is high; Be suitable for the compacting of thick shop layer, still, because vibration force decays in the depth direction gradually; The power on top layer is greater than the power of deep layer, so but the phenomenon that may cause the deep compaction top layer to gather materials and crush.The vibration wheel of oscillation mode compaction apparatus is done the simple harmonic quantity swing around its how much axle center, and the vibration wheel applies horizontal shear force through producing alternation torsional oscillation moment to the shop layer, thereby the excitation soil body makes it to produce horizontal vibration; Compare with vibratory compaction, vibration wave can be propagated along horizontal direction in being compacted material during oscillation compaction, and it is little but influence the degree of depth that there is good consolidation effect on the top layer, is suitable for the thin layer compacting.
Because vibratory compaction and oscillation compaction are applicable to different working stage and soil layer situation respectively; Therefore; In order to improve the service behaviour of road roller; Make road roller under different soil environments, can select suitable compacting mode, the compaction apparatus that adopts at present can be changed between vibration mode and oscillation mode usually.
Please refer to Fig. 1, Fig. 1 is a kind of structural representation of typical compaction apparatus.
Tradition vibration/vibration conversion hysteria compaction apparatus is all realized through following structure: the wheel matrix 1 ' of compaction apparatus comprises central driving shaft 2 ', laterally arranges and runs through first eccentric shaft 3 ' and second eccentric shaft 4 ' of wheel matrix; Between central driving shaft and first eccentric shaft, second eccentric shaft through transmission mechanism 5 ' transmissions such as cog belt or synchromesh gears; The drive mechanism central driving shaft rotates; Transmission mechanisms such as drive cog belt drive two eccentric shafts and do rotation at a high speed; When two eccentric shaft initial eccentricity positions relative; Realize oscillation functions when promptly the phase difference of two eccentric shafts is 180 °, identical when two eccentric shaft positions, produce vibrating function when promptly the phase difference of two eccentric shafts is 0 °.
But, when above-mentioned compaction apparatus is changed in the vibration and oscillation pattern, need initial position through manual adjustment first eccentric shaft and second eccentric shaft; To guarantee that two eccentric shaft phase differences are 180 ° or 0 °; Thereby realize vibration or oscillation functions, the complex structure of compaction apparatus and pattern transfer process waste time and energy, and conversion efficiency is lower; Can't carry out the switching between vibrating function and the oscillation functions in real time according to current behavior in service, reaction time is longer.
Therefore, how to simplify the structure of compaction apparatus, improve the pattern switching efficiency; And real-time switching according to current behavior in service implementation pattern; The reaction time of shortening pattern conversion, the service behaviour of raising road roller just becomes the problem that those skilled in the art need solve.
The utility model content
The purpose of the utility model provides a kind of compaction apparatus that is used for road roller; Its structure is comparatively simple, and can be according to the real-time switching of current behavior in service implementation pattern, thereby has shortened the pattern change-over period; Improve the pattern switching efficiency, and then improved the service behaviour of road roller.Another purpose of the utility model provides a kind of road roller that comprises above-mentioned compaction apparatus.
For solving the problems of the technologies described above; The utility model provides a kind of compaction apparatus of road roller; Comprise the wheel matrix on the vehicle frame that is installed on said road roller; The said wheel is equipped with first eccentric shaft and second eccentric shaft that laterally arranges in the matrix, two said eccentric shafts are respectively by independently dynamical element driving.
Preferably, said dynamical element comprises first motor and second motor, and said first motor and said first eccentric shaft are in transmission connection, and said second motor and said second eccentric shaft are in transmission connection.
Preferably, said first motor and said first eccentric shaft, said second motor and said second eccentric shaft are in transmission connection through spline respectively.
Preferably, said first eccentric shaft and said second eccentric shaft all run through the said matrix of taking turns vertically, and each eccentric shaft is installed on the said matrix of taking turns through bearing respectively.
Preferably, also comprise the control system, said control system further comprises rotary angle transmitter and control element;
Said rotary angle transmitter detects the corner of said first eccentric shaft and the corner of said second eccentric shaft in real time, and detected angular signal is transferred to said control element;
Said control element receives said angular signal, and calculates the phase difference of said first eccentric shaft and said second eccentric shaft through said angular signal; If said phase difference is identical with the predetermined phase difference, said control element is controlled two said motors and is rotated with present speed; If said phase difference is different with said predetermined phase difference, said control element controls said first motor and/or said second motor changes rotating speed.
Preferably, said rotary angle transmitter comprises first rotary angle transmitter and second rotary angle transmitter, and two said angular transducers are installed on respectively on said first eccentric shaft and said second eccentric shaft.
Preferably; Said control system also is included in second speed probe that detects first speed probe of said first motor rotary speed when detected phase difference equates with the predetermined phase difference and when detected phase difference equates with the predetermined phase difference, detect said second motor rotary speed;
Said first speed probe transfers to said control element with detected first rotating speed, and said second speed probe transfers to said control element with detected second rotating speed;
Said control element receives said first rotating speed and said second rotating speed; And two rotating speeds are compared; When said first rotating speed equates with said second rotating speed; Said control element is controlled two said motors and is rotated with present speed, and when said first rotating speed and said second rotating speed were unequal, said control element controls said first motor and/or said second motor changes rotating speed.
The utility model provides a kind of road roller, comprises vehicle frame and the compaction apparatus that is installed on said vehicle frame the place ahead, and said compaction apparatus is aforesaid compaction apparatus.
The compaction apparatus of the road roller that the utility model provided; Comprise the wheel matrix on the vehicle frame that is installed on said road roller; The said wheel is equipped with first eccentric shaft and second eccentric shaft that laterally arranges in the matrix, two said eccentric shafts are respectively by independently dynamical element driving; Because first eccentric shaft is to be driven by different dynamical elements with second eccentric shaft; There is not interaction relation in both; When road roller needs switching working mode, only need the output speed of adjustment dynamical element, also promptly change the rotating speed of first eccentric shaft and/or second eccentric shaft; When the relative position of first eccentric shaft and second eccentric shaft reached the phase difference of regulation, mode of operation was switched completion; Like this, in the pattern handoff procedure, need not to shut down the also initial position of manual adjustment two eccentric shafts, thereby simplified the pattern handoff procedure, improved the pattern switching efficiency; Simultaneously, above-mentioned compaction apparatus need not central driving shaft, and the transmission mechanism between central driving shaft and first eccentric shaft, second eccentric shaft, and structure is comparatively simple.
A kind of preferred embodiment in, the compaction apparatus that the utility model provided also comprises rotary angle transmitter and control element; Said rotary angle transmitter detects the corner of said first eccentric shaft and the corner of said second eccentric shaft in real time, and detected angular signal is transferred to said control element; Said control element receives said angular signal, and calculates the phase difference of said first eccentric shaft and said second eccentric shaft through said angular signal; If said phase difference is identical with the predetermined phase difference, said control element is controlled two said motors and is rotated with present speed; If said phase difference is different with said predetermined phase difference, said control element is controlled at least one change rotating speed in the two said motors.Like this, realized the automatic switchover of pattern, thereby realized the real-time switching of mode of operation, significantly improved the pattern switching efficiency through rotary angle transmitter and control element.
In another preferred embodiment, the compaction apparatus that the utility model provided also comprises first speed probe of said first motor rotary speed of real-time detection and detects second speed probe of said second motor rotary speed in real time; Said first speed probe transfers to said control element with detected first rotating speed, and said second speed probe transfers to said control element with detected second rotating speed; Said control element receives said first rotating speed and said second rotating speed; And two rotating speeds are compared; When said first rotating speed equated with said second rotating speed, said control element was controlled two said motors and is rotated with present speed, when said first rotating speed and said second rotating speed are unequal; Said control element is controlled at least one change rotating speed in the two said motors, till the rotating speed of two motors equates.Like this, after pattern is switched completion, keep the rotating speed of two motors identical, to keep this mode of operation.
Description of drawings
Fig. 1 is a kind of structural representation of existing compaction apparatus;
Fig. 2 is the structural representation of a kind of specific embodiment of compaction apparatus that the utility model provided;
Fig. 3 is the schematic diagram of a kind of specific embodiment of control system that the utility model provided;
Fig. 4 is the structural representation of the another kind of specific embodiment of control system that the utility model provided;
Fig. 5 is the schematic diagram of control shown in Figure 4 system;
The specific embodiment
The core of the utility model provides a kind of compaction apparatus that is used for road roller; Its structure is comparatively simple, and can be according to the real-time switching of current behavior in service implementation pattern, thereby has shortened the pattern change-over period; Improve the pattern switching efficiency, and then improved the service behaviour of road roller.Another core of the utility model provides a kind of road roller that comprises above-mentioned compaction apparatus and based on the control method of this compaction apparatus.
In order to make those skilled in the art person understand the technical scheme of the utility model better, the utility model is done further to specify below in conjunction with the accompanying drawing and the specific embodiment.
Please refer to Fig. 2, Fig. 2 is the structural representation of a kind of specific embodiment of compaction apparatus that the utility model provided.
In a kind of specific embodiment; The compaction apparatus that the utility model provides is used for road roller; This compaction apparatus comprises the wheel matrix 1 on the vehicle frame that is installed on road roller, and wheel matrix 1 operated by rotary motion is in the place ahead of road roller driver's cabin, through rolling and vibration/vibration realization pavement compaction of wheel matrix 1.In the wheel matrix 1 first eccentric shaft 31 and second eccentric shaft 32 that laterally arranges is installed; And by independently dynamical element driving, two eccentric shafts rotate under the effect of dynamical element two eccentric shafts respectively, thereby driven wheel matrix 1 rolls; When the phase difference between first eccentric shaft 31 and second eccentric shaft 32 is 0 °; Wheel matrix 1 is in vibration mode, and when the phase difference between first eccentric shaft 31 and second eccentric shaft 32 was 180 °, wheel matrix 1 was in oscillation mode.
Above-mentioned dynamical element can be motor, and promptly dynamical element comprises that first motor 51 and second motor, 52, the first motors 51 and first eccentric shaft 31 are in transmission connection, and second motor 52 and second eccentric shaft 32 are in transmission connection.Apparently, dynamical element also is not limited to motor, and it also can be conventional other actuators that use in this area, for example motor etc.
The mode of being in transmission connection of first motor 51 and first eccentric shaft 31 can be the spline pair form, and the mode that is in transmission connection between second motor 52 and second eccentric shaft 32 also can be the form of spline pair.The spline ways of connecting can realize radial location preferably, and its circumferential stress equalization in rotation process, and stress performance is better.Apparently, between first motor 51 and first eccentric shaft 31, also be not limited to the spline ways of connecting between second motor 52 and second eccentric shaft 32, also can realize the mode of radial location for other, for example flat key connection etc.
First eccentric shaft 31 and second eccentric shaft 32 can all run through the said matrix 1 of taking turns vertically, and each eccentric shaft is installed on the said matrix 1 of taking turns through bearing respectively, and like this, two eccentric shafts can be directly installed on the wheel matrix 1, have simplified the mounting structure of eccentric shaft.Two eccentric shafts also can not be directly installed on the wheel matrix 1, also can be respectively two eccentric shafts support frame device is set, and first eccentric shaft 31 and second eccentric shaft 32 are rotationally connected with bracing frame respectively, and bracing frame is fixed on the wheel matrix 1.
The use of ordinal numbers such as " first, second " is in order to distinguish the different parts of same names in the literary composition, describes just to being convenient to, and order of representation more not should not be construed as certain qualification.
Because first eccentric shaft 31 is to be driven by different dynamical elements with second eccentric shaft 32; There is not interaction relation in both; When road roller needs switching working mode, only need the output speed of adjustment dynamical element, also promptly change the rotating speed of first eccentric shaft 31 and/or second eccentric shaft 32; When the relative position of first eccentric shaft 31 and second eccentric shaft 32 reached the phase difference of regulation, mode of operation was switched completion; Like this, in the pattern handoff procedure, need not to shut down the also initial position of manual adjustment two eccentric shafts, thereby simplified the pattern handoff procedure, improved the pattern switching efficiency; Simultaneously, above-mentioned compaction apparatus need not central driving shaft, and the transmission mechanism between central driving shaft and first eccentric shaft 31, second eccentric shaft 32, and structure is comparatively simple.
Can also the compaction apparatus that the utility model provided further be improved.
Please refer to Fig. 3, Fig. 3 is the schematic diagram of a kind of specific embodiment of control system that the utility model provided.
In the another kind of specific embodiment; The compaction apparatus that the utility model provided also has the control system; This control system realizes the automatic switchover of vibration and vibration mode through detecting the corner of two eccentric shafts, thereby when being implemented in the duty change; In time adjust the mode of operation of road roller, improve the service behaviour of road roller.Particularly, this control system comprises rotary angle transmitter and control element 41, and wherein, rotary angle transmitter is used for detecting the corner of first eccentric shaft 31 and the corner of second eccentric shaft 32 in real time, and detected angular signal is transferred to control element 41; Control element 41 receives the detected angular signal of rotary angle transmitter, and calculates the phase difference of first eccentric shaft 31 and second eccentric shaft 32 through this angular signal; If the phase difference that obtains is identical with the predetermined phase difference, control element 41 control first motors 51 and second motor 52 rotate with present speed; If the phase difference that calculates is different with the predetermined phase difference, control element 41 control first motors 51 and/or second motor 52 change rotating speed, because the rotating speed of two motors is different; Then first eccentric shaft 31 is different with the rotating speed of second eccentric shaft 32, and the relative eccentric position of two eccentric shafts changes, and both phase differences change; When both phase differences reach the predetermined phase difference; Control element 41 stops control strategy, and operating personnel adjust the rotating speed of two motors, makes the output speed of two motors identical; Thereby make win eccentric shaft 31 and the constant speed rotation under current phase difference state of second eccentric shaft 32, so that keep present mode; Like this, realized the automatic switchover of pattern, thereby realized the real-time switching of mode of operation, significantly improved the pattern switching efficiency through rotary angle transmitter and control element 41.
The number of above-mentioned rotary angle transmitter can be two, and two rotary angle transmitters are installed on respectively on first eccentric shaft 31 and said second eccentric shaft 32, and the corner of two eccentric shafts is respectively through independently rotary angle transmitter detection, so that improve accuracy of detection.
Theoretically, rotary angle transmitter is not limited to two, also a rotary angle transmitter can only be set, and this rotary angle transmitter had both detected the corner of first eccentric shaft 31, detected the corner of second eccentric shaft 32 again, and two corners are transferred to control element 41 respectively.
In above-mentioned control model, when the needs transformation working pattern, adjust the rotating speed of two motors through the control system; After the rotating speed adjustment, after phase difference reached instructions for use, control procedure finished; Operating personnel's manual adjustment motor rotary speed, therefore, this process is the open loop control procedure.
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the structural representation of the another kind of specific embodiment of control system that the utility model provided; Fig. 5 is the schematic diagram of control shown in Figure 4 system.
In the above-mentioned specific embodiment, when the phase difference of rotating speed to two eccentric shaft of adjustment two motors with after the predetermined phase difference equates, be not limited to the rotating speed of controlling two motors through the mode of manual work, also can control the rotating speed of two motors through following automatic control mode.Particularly, above-mentioned control system also comprises first speed probe 44 of said first motor of real-time detection 51 rotating speeds and detects second speed probe 45 of said second motor, 52 rotating speeds in real time; First speed probe 44 transfers to said control element 41 with detected first rotating speed, and said second speed probe 45 transfers to said control element 41 with detected second rotating speed; Control element 41 receives said first rotating speed and said second rotating speed; And two rotating speeds are compared; When said first rotating speed equates with said second rotating speed; Said control element 41 controls two said motors rotate with present speed, and when said first rotating speed and said second rotating speed were unequal, at least one in the said control element 41 controls two said motors changed rotating speed.
Below the installation of each several part concerns in the summary compaction apparatus that the utility model provided,
Two drive-side shaft bearings 12 and two vibration side shaft holders 15 are fixed by bolts to respectively on the wheel matrix 1; First eccentric shaft 31, second eccentric shaft 32 are installed on two drive-side shaft bearings 12 and two the vibration side shaft holders 15 through vibration bearing respectively; Being fixed on first motor 51 of vibration on the side shaft holder 15 is connected with first eccentric shaft 31 through spline pair and connects; Second motor 52 is connected through spline pair with second eccentric shaft 32; Being fixed on first rotary angle transmitter 42 on the drive-side shaft bearing 12, second rotary angle transmitter 43 is connected with first eccentric shaft 31, second eccentric shaft 32 respectively; Wheel matrix 1 right side is connected with driving side support 7 through driving side shock absorber 5, drive plate 6, reductor 8 successively; The left side is successively through middle Connection Block 16, frame bearing 19, gimbal axis bearing 18, junction plate 22, vibration side shock absorber 23 and vibrate side stand 24 and connect, and end cap 20 is installed on the gimbal axis bearing 18, and pressing plate 21 is installed on the Connection Block 16 of centre; Driving side support 7, vibration side stand 24 are connected with the vehicle frame of road roller.
It is to be noted; The annexation of above-mentioned each parts is a kind of concrete embodiment; Be not limited to above-mentioned concrete connected mode, as long as can guarantee the operate as normal of each parts, the installation of each several part relation can be the conventional various connected modes of using in this area.
Except above-mentioned compaction apparatus, the utility model also provides a kind of road roller that comprises above-mentioned compaction apparatus, and other each several part structures of this road roller please refer to prior art, repeat no more at this.
More than a kind of road roller and compaction apparatus thereof 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 method and the core concept thereof 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 (8)
1. the compaction apparatus of a road roller comprises the wheel matrix (1) on the vehicle frame that is installed on said road roller, and said the wheel is equipped with first eccentric shaft (31) and second eccentric shaft (32) that laterally arranges in the matrix (1); It is characterized in that two said eccentric shafts are respectively by independently dynamical element driving.
2. the compaction apparatus of road roller according to claim 1; It is characterized in that; Said dynamical element comprises first motor (51) and second motor (52); Said first motor (51) is in transmission connection with said first eccentric shaft (31), and said second motor (52) is in transmission connection with said second eccentric shaft (32).
3. the compaction apparatus of road roller according to claim 2 is characterized in that, said first motor (51) is in transmission connection through spline respectively with said second eccentric shaft (32) with said first eccentric shaft (31), said second motor (52).
4. the compaction apparatus of road roller according to claim 3 is characterized in that, said first eccentric shaft (31) and said second eccentric shaft (32) all run through said vertically takes turns matrix (1), and each eccentric shaft is installed on the said matrix (1) of taking turns through bearing respectively.
5. according to the compaction apparatus of each described road roller of claim 2 to 4, it is characterized in that, also comprise the control system, said control system further comprises rotary angle transmitter and control element (41);
Said rotary angle transmitter detects the corner of said first eccentric shaft (31) and the corner of said second eccentric shaft (32) in real time, and detected angular signal is transferred to said control element (41);
Said control element (41) receives said angular signal, and calculates the phase difference of said first eccentric shaft (31) and said second eccentric shaft (32) through said angular signal; If said phase difference is identical with the predetermined phase difference, said control element (41) control two said motors rotate with present speed; If said phase difference is different with said predetermined phase difference, said control element (41) control said first motor (51) and/or said second motor (52) change rotating speed.
6. the compaction apparatus of road roller according to claim 5; It is characterized in that; Said rotary angle transmitter comprises first rotary angle transmitter (42) and second rotary angle transmitter (43), and two said angular transducers are installed on respectively on said first eccentric shaft (31) and said second eccentric shaft (32).
7. the compaction apparatus of road roller according to claim 5; It is characterized in that; Said control system also is included in second speed probe (45) that detects first speed probe (44) of said first motor (51) rotating speed when detected phase difference equates with the predetermined phase difference and when detected phase difference equates with the predetermined phase difference, detect said second motor (52) rotating speed;
Said first speed probe (44) transfers to said control element (41) with detected first rotating speed, and said second speed probe (45) transfers to said control element (41) with detected second rotating speed;
Said control element (41) receives said first rotating speed and said second rotating speed; And two rotating speeds are compared; When said first rotating speed equates with said second rotating speed; Said control element (41) control two said motors rotate with present speed, and when said first rotating speed and said second rotating speed were unequal, said control element (41) control said first motor (51) and/or said second motor (52) changed rotating speed.
8. a road roller comprises vehicle frame and the compaction apparatus that is installed on said vehicle frame the place ahead, it is characterized in that said compaction apparatus is like each described compaction apparatus of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220115230 CN202543776U (en) | 2012-03-23 | 2012-03-23 | Road roller and compaction device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220115230 CN202543776U (en) | 2012-03-23 | 2012-03-23 | Road roller and compaction device thereof |
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| Publication Number | Publication Date |
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| CN202543776U true CN202543776U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220115230 Expired - Lifetime CN202543776U (en) | 2012-03-23 | 2012-03-23 | Road roller and compaction device thereof |
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| Country | Link |
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| CN (1) | CN202543776U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605706A (en) * | 2012-03-23 | 2012-07-25 | 徐工集团工程机械股份有限公司科技分公司 | Pavement roller, compacting device thereof and compacting control method |
| RU2734533C1 (en) * | 2020-02-26 | 2020-10-20 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тихоокеанский государственный университет" | Vibratory roll of road roller |
| RU2753291C1 (en) * | 2020-12-21 | 2021-08-12 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тихоокеанский государственный университет" | Vibrating drum for road roller |
-
2012
- 2012-03-23 CN CN 201220115230 patent/CN202543776U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605706A (en) * | 2012-03-23 | 2012-07-25 | 徐工集团工程机械股份有限公司科技分公司 | Pavement roller, compacting device thereof and compacting control method |
| CN102605706B (en) * | 2012-03-23 | 2015-04-01 | 徐工集团工程机械股份有限公司道路机械分公司 | Pavement roller, compacting device thereof and compacting control method |
| RU2734533C1 (en) * | 2020-02-26 | 2020-10-20 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тихоокеанский государственный университет" | Vibratory roll of road roller |
| RU2753291C1 (en) * | 2020-12-21 | 2021-08-12 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тихоокеанский государственный университет" | Vibrating drum for road roller |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20150401 |
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| RGAV | Abandon patent right to avoid regrant |