CN204703039U - A kind of road roller circular steel wheel of vibratory impulse - Google Patents
A kind of road roller circular steel wheel of vibratory impulse Download PDFInfo
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- CN204703039U CN204703039U CN201520357295.8U CN201520357295U CN204703039U CN 204703039 U CN204703039 U CN 204703039U CN 201520357295 U CN201520357295 U CN 201520357295U CN 204703039 U CN204703039 U CN 204703039U
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- eccentric
- main shaft
- steel wheel
- eccentric block
- sealing plate
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Abstract
The utility model discloses the circular steel wheel of a kind of road roller vibratory impulse, comprise main shaft and steel wheel main body, steel wheel main body comprises opening cylinder, left sealing plate and right sealing plate, main shaft is connected with left sealing plate by left connection bearing, between left connection bearing and main shaft, left eccentric bushing is installed, main shaft is connected with right sealing plate by right connection bearing, between right connection bearing and main shaft, right eccentric bushing is installed, main shaft is provided with left eccentric block and right eccentric block, left eccentric bushing and right eccentric bushing, left eccentric block is identical with the eccentric direction of right eccentric block, left eccentric bushing and left eccentric block, the eccentric direction of right eccentric bushing and right eccentric block is reverse, the eccentric throw of left eccentric bushing and right eccentric bushing is A, the eccentric throw of left eccentric block and right eccentric block is e, the quality sum of left eccentric block and right eccentric block and the product of eccentric distance e, equal with the product of eccentric throw A with the quality of steel wheel main body.The utility model can take into account degree of compaction, efficiency of compaction, compacting uniformity and compacting planeness.
Description
Technical field
The utility model relates to a kind of vibratory roller steel wheel, especially relates to the circular steel wheel of a kind of road roller vibratory impulse.
Background technology
Road roller is engineering machinery common in a kind of highway engineering construction, and its major function is the planeness and the compaction requirement that make highway subgrade or road surface reach national regulations.According to the difference of compaction theory, road roller existing on market can be divided into quiet road roller, vibratory roller, impact road roller etc., these road rollers are widely used in each stage of construction of the highway.But due to the restriction of himself structure, still there is certain weak point in quiet road roller, vibratory roller and impact road roller in operation process.
Quiet road roller relies on self gravitation road pavement to carry out compacting, and compacting influence depth is poor, and in order to reach the compaction requirement on road surface, need to adopt large-tonnage road roller to carry out multipass compacting, thus consolidation effect is poor, inefficiency.Vibratory roller adopts vibratory compaction technology, it relies on the rotation of the eccentric block in vibrating wheels, main shaft installed to produce the vibration of certain frequency and amplitude, drive steel wheeled vibratory, be applied to and be compacted on material, reduce internal friction between particle, be conducive to the redistribution of material particles position, thus realize better consolidation effect.Although vibration reduces the tonnage demand of road roller to a certain extent, the amplitude of vibration is less, and vibration frequency is single, and the degree of depth propagated downwards is more shallow, for poor compared with the material consolidation effect of depths apart from ground.In order to realize the degree of compaction compared with depths material, just needing to carry out multipass vibratory compaction, thus have impact on operating efficiency.In addition, can depart from ground because exciting force is greater than steel wheel gravity in the steel wheel of vibratory roller and ground interaction process, this bounce phenomenon not only have impact on consolidation effect, and reduces the dependability of road roller, need set up rubber damping device.Impact road roller relies on the non-circular impact steel wheel such as polygon or projection shape to roll, material is impacted and rolls effect, thus depth of interaction is larger, but the operating principle that the interruption of this polygon or projection shape is impacted, the uniformity of shock compaction is not high, still needs to carry out follow-up leveling operation after compacting.Therefore, the equal Shortcomings part of steel wheel of common quiet road roller, vibratory roller and impact road roller, can not take into account efficiency of compaction, compacting depth and planeness.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, there is provided a kind of road roller vibratory impulse circular steel wheel, its structure is simple, be easy to realize and easy for installation, while degree of compaction, efficiency of compaction, compacting uniformity and compacting planeness can be taken into account, the influence depth of compaction force can also be taken into account, reach the object completing pavement compaction operation fast.
For achieving the above object, the technical solution adopted in the utility model is: the circular steel wheel of a kind of road roller vibratory impulse, it is characterized in that: comprise main shaft and be set in the steel wheel main body outside main shaft, described steel wheel main body comprises opening cylinder and the left sealing plate that is fixedly mounted in opening cylinder and right sealing plate, the shape of described opening cylinder is cylindrical, the left end of described main shaft is through left sealing plate, the right-hand member of described main shaft is through right sealing plate, described main shaft is rotationally connected by left connection bearing and left sealing plate, between described left connection bearing and main shaft, left eccentric bushing is installed, described main shaft is rotationally connected by right connection bearing and right sealing plate, between described right connection bearing and main shaft, right eccentric bushing is installed, described main shaft is provided with left eccentric block and right eccentric block, described left eccentric bushing and right eccentric bushing are symmetrical arranged, described left eccentric block and right eccentric block are symmetrical arranged, described left eccentric bushing is identical with the eccentric direction of right eccentric bushing, described left eccentric block is identical with the eccentric direction of right eccentric block, the eccentric direction of described left eccentric bushing and left eccentric block is reverse, the eccentric direction of described right eccentric bushing and right eccentric block is reverse, the eccentric throw of described left eccentric bushing and right eccentric bushing is equal and be A, the eccentric throw of described left eccentric block and right eccentric block is equal and be e, the mass M of described steel wheel main body and the product of eccentric throw A are W
1, the quality sum m of described left eccentric block and right eccentric block and the product of eccentric distance e are W
2, described W
1=W
2.
The circular steel wheel of above-mentioned a kind of road roller vibratory impulse, it is characterized in that: the left end of described opening cylinder is provided with left support frame, the right-hand member of described opening cylinder is provided with right support frame, the left end of described main shaft is through left support frame, the right-hand member of described main shaft is through right support frame, described main shaft is rotationally connected by left bearing and left support frame, and described main shaft is rotationally connected by right bearing and right support frame.
The circular steel wheel of above-mentioned a kind of road roller vibratory impulse, is characterized in that: described left sealing plate and right sealing plate are symmetrical arranged, and described left support frame and right support frame are symmetrical arranged.
The circular steel wheel of above-mentioned a kind of road roller vibratory impulse, is characterized in that: described left bearing, right bearing, left connection bearing and right connection bearing are rolling bearing.
The circular steel wheel of above-mentioned a kind of road roller vibratory impulse, is characterized in that: described left eccentric block and right eccentric block are all between left sealing plate and right sealing plate.
The circular steel wheel of above-mentioned a kind of road roller vibratory impulse, it is characterized in that: described left support frame is arranged on the left upper part of opening cylinder, described right support frame is arranged on the right-hand member top of opening cylinder.
The circular steel wheel of above-mentioned a kind of road roller vibratory impulse, is characterized in that: described left sealing plate and right sealing plate are all mounted by means of bolts in opening cylinder.
The circular steel wheel of above-mentioned a kind of road roller vibratory impulse, is characterized in that: described left eccentric block and right eccentric block are all mounted by means of bolts on main shaft.
The circular steel wheel of above-mentioned a kind of road roller vibratory impulse, is characterized in that: the right-hand member of described main shaft is installed with belt wheel.
The circular steel wheel of above-mentioned a kind of road roller vibratory impulse, it is characterized in that: the outside of described right support frame is provided with vibratory impulse motor, the described output shaft of vibratory impulse motor is fixedly connected with the right-hand member of main shaft.
The utility model compared with prior art has the following advantages:
1, the utility model is easy to realize, the utility model achieves the vibration of circular steel wheel and the compound action of soft impulse by rotating with the main shaft of left eccentric bushing and right eccentric bushing, due to the exciting force and moment that steel wheel circular on main shaft produces, the centrifugal force and moment produced with the left eccentric block oppositely installed, right eccentric block constitutes balanced system of force, can not bounce be there is in the vibrated steel wheel gravity of main shaft, eliminate rubber damping device, overall structure parts are less, and structure is simple.
2, the utility model compacting depth is larger, efficiency of compaction is higher, owing to adopting the operating principle of circular steel wheeled vibratory and soft impulse compound action, each compacting is equivalent to the compound of same tonnage vibratory roller and impact road roller operation effectiveness, thus has darker compacting depth and higher efficiency of compaction than vibratory compaction.
3, the utility model Energy harvesting is more abundant, in the course of work, steel wheel is not liftoff, does not need vibration absorber, eliminates the vibrational energy loss that vibration absorber causes, decrease vibrational energy and propagate the waste caused to frame, the Energy harvesting that vibration and soft impulse produce must be more abundant.
4, the utility model compacting planeness is good, amplitude stability, can enable road roller make full use of self gravitation as static pressure strength while, good efficiency of compaction and compacting uniformity is reached by the vibration of circular steel wheel and the compound action of soft impulse, and utilize soft impulse effect to increase the influence depth of compacting operation, thus while guarantee good degree of compaction, efficiency of compaction, compacting uniformity and compacting planeness, the influence depth of compaction force can also be taken into account, reach the object completing pavement compaction operation fast.
In sum, the utility model structure is simple, it is easy and simple to handle to use, operating efficiency is high and result of use good, practical value is high, there is wide market application foreground and Technique Popularizing value, effectively can solve the problem of lack of homogeneity during the non-circular steel wheel shock compaction such as polygon or projection shape on existing road roller, also effectively can solve the problem that the compaction force influence depth of the less circular vibration steel wheel of existing amplitude of road roller is inadequate, compacting uniformity and compaction force can be taken into account.
Below by drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first detailed description of the invention of the utility model.
Fig. 2 is the structural representation of left eccentric block, right eccentric block in the first detailed description of the invention of the utility model.
Fig. 3 is the structural representation of main shaft in the first detailed description of the invention of the utility model.
Fig. 4 is the using state figure of the first detailed description of the invention of the utility model.
Fig. 5 is that the A of Fig. 4 is to partial view.
Fig. 6 is the structural representation of the utility model the second detailed description of the invention.
Description of reference numerals:
1-left support frame; 2-right support frame; 3-vibratory impulse motor;
4-bolt; 5-the first belt wheel; 6-steel wheel main body;
7-main shaft; 8-left bearing; 9-opening cylinder;
10-left sealing plate; 11-right sealing plate; 12-left connection bearing;
13-right connection bearing; 14-left eccentric bushing; 15-right eccentric bushing;
16-right bearing; 17-belt wheel; 18-belt;
19-left eccentric block; 20-right eccentric block.
Detailed description of the invention
Embodiment 1
The circular steel wheel of a kind of road roller vibratory impulse as shown in Figure 1 to Figure 3, the steel wheel main body 6 comprising main shaft 7 and be set in outside main shaft 7, described steel wheel main body 6 comprises opening cylinder 9 and the left sealing plate 10 that is fixedly mounted in opening cylinder 9 and right sealing plate 11, the shape of described opening cylinder 9 is cylindrical, the left end of described main shaft 7 is through left sealing plate 10, the right-hand member of described main shaft 7 is through right sealing plate 11, described main shaft 7 is rotationally connected with left sealing plate 10 by left connection bearing 12, between described left connection bearing 12 and main shaft 7, left eccentric bushing 14 is installed, described main shaft 7 is rotationally connected with right sealing plate 11 by right connection bearing 13, between described right connection bearing 13 and main shaft 7, right eccentric bushing 15 is installed, described main shaft 7 is provided with left eccentric block 19 and right eccentric block 20, described left eccentric bushing 14 and right eccentric bushing 15 are symmetrical arranged, described left eccentric block 19 and right eccentric block 20 are symmetrical arranged, described left eccentric bushing 14 is identical with the eccentric direction of right eccentric bushing 15, described left eccentric block 19 is identical with the eccentric direction of right eccentric block 20, the eccentric direction of described left eccentric bushing 14 and left eccentric block 19 is reverse, the eccentric direction of described right eccentric bushing 15 and right eccentric block 20 is reverse, the eccentric throw of described left eccentric bushing 14 and right eccentric bushing 15 is equal and be A, the eccentric throw of described left eccentric block 19 and right eccentric block 20 is equal and be e, the mass M of described steel wheel main body 6 and the product of eccentric throw A are W
1, described left eccentric block 19 and the quality sum m of right eccentric block 20 and the product of eccentric distance e are W
2, described W
1=W
2.During actual fabrication, the size of the quality of left eccentric block 19, the quality of right eccentric block 20, the eccentric distance e of left eccentric block 19 and the eccentric distance e of right eccentric block 20, can adjust according to the eccentric throw A of the eccentric throw A of the mass M of steel wheel main body 6, left eccentric bushing 14 and right eccentric bushing 15, but M × A=m × e must be ensured.
Wherein, main shaft 7 is made up of a shaft part, b shaft part, c-axis section, d shaft part, e shaft part, f shaft part, g shaft part and the multiple shaft part of h shaft part, on the g shaft part be connected by left connection bearing 12 with left sealing plate 10, key is connected with left eccentric bushing 14, and on the e shaft part be connected by right connection bearing 13 with right sealing plate 11, key is connected with right eccentric bushing 15.Left eccentric block 19 and right eccentric block 20 are all fixedly mounted on f shaft part, and left eccentric block 19 and right eccentric block 20 are driven by the rotation of main shaft 7 and rotate.
As shown in Figure 1, the left end of described opening cylinder 9 is provided with left support frame 1, the right-hand member of described opening cylinder 9 is provided with right support frame 2, the left end of described main shaft 7 is through left support frame 1, the right-hand member of described main shaft 7 is through right support frame 2, described main shaft 7 is rotationally connected by left bearing 8 and left support frame 1, and described main shaft 7 is rotationally connected by right bearing 16 and right support frame 2.Wherein, h shaft part is connected with left support frame 1 by left bearing 8, and d shaft part is connected with right support frame 2 by right bearing 16, and left support frame 1 and right support frame 2 play the effect supporting road roller superstructure.
As shown in Figure 1, described left sealing plate 10 and right sealing plate 11 are symmetrical arranged, and described left support frame 1 and right support frame 2 are symmetrical arranged.
In the present embodiment, described left bearing 8, right bearing 16, left connection bearing 12 and right connection bearing 13 are rolling bearing, when the circular steel wheel of vibratory impulse is used for little tonnage road roller, the lubrication of left bearing 8, right bearing 16, left connection bearing 12 and right connection bearing 13 all can adopt grease lubrication mode; When the circular steel wheel of vibratory impulse be used for comparatively large-tonnage road roller time, the lubrication of left bearing 8, right bearing 16, left connection bearing 12 and right connection bearing 13 all can adopt oil lubrication mode.
As shown in Figure 1, described left eccentric block 19 and right eccentric block 20 are all between left sealing plate 10 and right sealing plate 11.
As shown in Figure 1, described left support frame 1 is arranged on the left upper part of opening cylinder 9, and described right support frame 2 is arranged on the right-hand member top of opening cylinder 9.
In the present embodiment, described left sealing plate 10 and right sealing plate 11 are all mounted by means of bolts in opening cylinder 9.
In the present embodiment, described left eccentric block 19 and right eccentric block 20 are all mounted by means of bolts on main shaft 7.
As shown in Figure 1, the right-hand member of described main shaft 7 is installed with belt wheel 17, and during actual installation, belt wheel 17 is arranged on the b shaft part of main shaft 7.
During use, left support frame 1 is connected with the frame of road roller with right support frame 2, so that circular for the utility model vibratory impulse steel wheel is arranged on road roller, belt wheel 17 is driven by vibratory impulse motor 3 and rotates, vibratory impulse motor 3 is arranged in the frame of road roller by bolt 4, the output shaft of vibratory impulse motor 3 is installed with the first belt wheel 5, first belt wheel 5 and belt wheel 17 is connected to form belt transport (as shown in Figure 4 and Figure 5) by belt 18.The road roller installing the circular steel wheel of the utility model vibratory impulse is transported to after being compacted road surface place and is started, under the effect of road roller rear wheel drive force, the circular steel wheel of vibratory impulse travels forward, under the effect of the frictional resistance with ground-contacting position, the circular steel wheel of vibratory impulse can rolls forward.Simultaneously, vibratory impulse motor 3 by the first belt wheel 5 that belt 18 and vibratory impulse motor 3 power output shaft are installed by power transmission on belt wheel 17, thus drive main shaft 7 to rotate, the rotation of main shaft 7 also can drive left eccentric bushing 14 and right eccentric bushing 15 around the axis rotation of main shaft 7, and then make steel wheel main body 6 around main shaft 7 eccentric rotary by left connection bearing 12 and right connection bearing 13, to the compound action being compacted the periodic vibration of material generation and soft impulse.Meanwhile, the rotation of main shaft 7 also can drive left eccentric block 19 and right eccentric block 20 around the axis rotation of main shaft 7, due to the left eccentric bushing 14 that main shaft 7 is installed, right eccentric bushing 15, left eccentric block 19 and right eccentric block 20 have following characteristics, namely left eccentric bushing 14 and right eccentric bushing 15 are symmetrical arranged, left eccentric block 19 and right eccentric block 20 are symmetrical arranged, left eccentric bushing 14 is identical with the eccentric direction of right eccentric bushing 15, left eccentric block 19 is identical with the eccentric direction of right eccentric block 20, the eccentric direction of left eccentric bushing 14 and left eccentric block 19 is reverse, the eccentric direction of right eccentric bushing 15 and right eccentric block 20 is reverse, the eccentric throw of left eccentric bushing 14 and right eccentric bushing 15 is equal and be A, the eccentric throw of left eccentric block 19 and right eccentric block 20 is equal and be e, the mass M of steel wheel main body 6 and the product of eccentric throw A are W
1, the quality sum m of left eccentric block 19 and right eccentric block 20 and the product of eccentric distance e are W
2, and W
1=W
2.Therefore, the exciting force equal and opposite in direction that centrifugal force sum and steel wheel main body 6 that the left eccentric block 19 that main shaft 7 is installed and right eccentric block 20 produce be eccentric to be produced and direction is contrary, the moment equal and opposite in direction that the moment sum that left eccentric block 19 and right eccentric block 20 produce and steel wheel main body 6 be eccentric to be produced and direction is contrary, they constitute balanced system of force on main shaft, namely the space force system that produces on main shaft 7 with steel wheel main body 6 of left eccentric block 19 and right eccentric block 20 to make a concerted effort be 0, the resultant moment of the space force system that left eccentric block 19 and right eccentric block 20 produce on main shaft 7 with steel wheel main body 6 is also 0, the not vibrated effect with impact force of main shaft 7, the circular steel wheel of vibratory impulse can not be liftoff because there is bounce.
Embodiment 2
As shown in Figure 6, the present embodiment as different from Example 1: the outside of described right support frame 2 is provided with vibratory impulse motor 3, and the output shaft of described vibratory impulse motor 3 is fixedly connected with the right-hand member of main shaft 7.During actual installation, the output shaft of vibratory impulse motor 3 can pass through spline direct connection with the right-hand member of main shaft 7 and transmit power.
In the present embodiment, structure, the annexation of remainder are all identical with embodiment 1 with operating principle.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure transformation, all still belong in the protection domain of technical solutions of the utility model.
Claims (10)
1. the road roller circular steel wheel of vibratory impulse, it is characterized in that: comprise main shaft (7) and be set in main shaft (7) steel wheel main body (6) outward, described steel wheel main body (6) comprises opening cylinder (9) and the left sealing plate (10) that is fixedly mounted in opening cylinder (9) and right sealing plate (11), the shape of described opening cylinder (9) is cylindrical, the left end of described main shaft (7) is through left sealing plate (10), the right-hand member of described main shaft (7) is through right sealing plate (11), described main shaft (7) is rotationally connected by left connection bearing (12) and left sealing plate (10), between described left connection bearing (12) and main shaft (7), left eccentric bushing (14) is installed, described main shaft (7) is rotationally connected by right connection bearing (13) and right sealing plate (11), between described right connection bearing (13) and main shaft (7), right eccentric bushing (15) is installed, described main shaft (7) is provided with left eccentric block (19) and right eccentric block (20), described left eccentric bushing (14) and right eccentric bushing (15) are symmetrical arranged, described left eccentric block (19) and right eccentric block (20) are symmetrical arranged, described left eccentric bushing (14) is identical with the eccentric direction of right eccentric bushing (15), described left eccentric block (19) is identical with the eccentric direction of right eccentric block (20), the eccentric direction of described left eccentric bushing (14) and left eccentric block (19) is reverse, the eccentric direction of described right eccentric bushing (15) and right eccentric block (20) is reverse, the eccentric throw of described left eccentric bushing (14) and right eccentric bushing (15) is equal and be A, the eccentric throw of described left eccentric block (19) and right eccentric block (20) is equal and be e, the described mass M of steel wheel main body (6) and the product of eccentric throw A are W
1, the quality sum m of described left eccentric block (19) and right eccentric block (20) and the product of eccentric distance e are W
2, described W
1=W
2.
2. according to the circular steel wheel of a kind of road roller vibratory impulse according to claim 1, it is characterized in that: the left end of described opening cylinder (9) is provided with left support frame (1), the right-hand member of described opening cylinder (9) is provided with right support frame (2), the left end of described main shaft (7) is through left support frame (1), the right-hand member of described main shaft (7) is through right support frame (2), described main shaft (7) is rotationally connected by left bearing (8) and left support frame (1), described main shaft (7) is rotationally connected by right bearing (16) and right support frame (2).
3. according to the circular steel wheel of a kind of road roller vibratory impulse according to claim 2, it is characterized in that: described left sealing plate (10) and right sealing plate (11) are symmetrical arranged, described left support frame (1) and right support frame (2) are symmetrical arranged.
4., according to the circular steel wheel of a kind of road roller vibratory impulse according to claim 2, it is characterized in that: described left bearing (8), right bearing (16), left connection bearing (12) and right connection bearing (13) are rolling bearing.
5., according to the circular steel wheel of a kind of road roller vibratory impulse according to claim 1, it is characterized in that: described left eccentric block (19) and right eccentric block (20) are all positioned between left sealing plate (10) and right sealing plate (11).
6. according to the circular steel wheel of a kind of road roller vibratory impulse according to claim 2, it is characterized in that: described left support frame (1) is arranged on the left upper part of opening cylinder (9), described right support frame (2) is arranged on the right-hand member top of opening cylinder (9).
7., according to the circular steel wheel of a kind of road roller vibratory impulse according to claim 1, it is characterized in that: described left sealing plate (10) and right sealing plate (11) are all mounted by means of bolts in opening cylinder (9).
8., according to the circular steel wheel of a kind of road roller vibratory impulse according to claim 1, it is characterized in that: described left eccentric block (19) and right eccentric block (20) are all mounted by means of bolts on main shaft (7).
9., according to the circular steel wheel of a kind of road roller vibratory impulse according to claim 1, it is characterized in that: the right-hand member of described main shaft (7) is installed with belt wheel (17).
10. according to the circular steel wheel of a kind of road roller vibratory impulse according to claim 2, it is characterized in that: the outside of described right support frame (2) is provided with vibratory impulse motor (3), the output shaft of described vibratory impulse motor (3) is fixedly connected with the right-hand member of main shaft (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520357295.8U CN204703039U (en) | 2015-05-28 | 2015-05-28 | A kind of road roller circular steel wheel of vibratory impulse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520357295.8U CN204703039U (en) | 2015-05-28 | 2015-05-28 | A kind of road roller circular steel wheel of vibratory impulse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204703039U true CN204703039U (en) | 2015-10-14 |
Family
ID=54282665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520357295.8U Withdrawn - After Issue CN204703039U (en) | 2015-05-28 | 2015-05-28 | A kind of road roller circular steel wheel of vibratory impulse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204703039U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831603A (en) * | 2015-05-28 | 2015-08-12 | 冯忠绪 | Round vibratory impact steel wheel for road roller |
-
2015
- 2015-05-28 CN CN201520357295.8U patent/CN204703039U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831603A (en) * | 2015-05-28 | 2015-08-12 | 冯忠绪 | Round vibratory impact steel wheel for road roller |
| CN104831603B (en) * | 2015-05-28 | 2017-03-01 | 冯忠绪 | A kind of road roller vibratory impulse circle steel wheel |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151014 Effective date of abandoning: 20171114 |
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| AV01 | Patent right actively abandoned |