CN106195005A - A kind of cutter cylinder crosscutting rotor of swinging flying knife - Google Patents
A kind of cutter cylinder crosscutting rotor of swinging flying knife Download PDFInfo
- Publication number
- CN106195005A CN106195005A CN201610590689.7A CN201610590689A CN106195005A CN 106195005 A CN106195005 A CN 106195005A CN 201610590689 A CN201610590689 A CN 201610590689A CN 106195005 A CN106195005 A CN 106195005A
- Authority
- CN
- China
- Prior art keywords
- pressure oil
- support mandrel
- flying knife
- drive tab
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
- F16C32/064—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being supplied under pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/26—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut
- B26D1/28—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut and rotating continuously in one direction during cutting
- B26D1/285—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut and rotating continuously in one direction during cutting for thin material, e.g. for sheets, strips or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
- F16C32/064—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being supplied under pressure
- F16C32/0651—Details of the bearing area per se
- F16C32/0655—Details of the bearing area per se of supply openings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0662—Details of hydrostatic bearings independent of fluid supply or direction of load
- F16C32/0666—Details of hydrostatic bearings independent of fluid supply or direction of load of bearing pads
Abstract
The present invention provides a kind of cutter cylinder crosscutting rotor of swinging flying knife, including the flying knife cylinder for installing blade, for supporting the support mandrel of flying knife cylinder, described flying knife cylinder rotates around fixing support mandrel, it is characterized in: described support mandrel offers pressure oil passage along axis, described support mandrel surface covers drive tab, described drive tab is circular arc-like block, in the middle part of described drive tab, external arc surface is provided with pressure oil cavity, described support mandrel offers the pressure oil subchannel connecting described pressure oil passage with described pressure oil cavity, pressure oil is through described pressure oil passage and pressure oil subchannel, pressure oil cavity between flying knife cylinder and drive tab forms pressure oil reservoir, referred to as hydrodynamic journal liquid polymers.Construction design of journal bearings is reasonable, can improve operating accuracy, reduces the complexity of processing and fabricating, improves the combination property of device further.
Description
Technical field
The present invention relates to belong to paper cutter manufacturing technology field, relate to the double back crosscutting rotor of rotor transverse cutting device of paper cutting machine
Improve, a kind of cutter cylinder crosscutting rotor of swinging flying knife.
Background technology
Existing dual AC power knife system due to its good service behaviour, be widely used papermaking, print, packaging etc.
The crosscutting aspect of the composite plate of the paper of industry and cardboard and picture corrugated sheet class.Double back rotor infeed set-up, although have excellent
Performance, but the installed capacity of its dragging motor is the biggest, and due to the particularity of its work, all use high-power servo to pass
Dynamic, there is also cost of manufacture and the higher situation of use cost.Using cutter cylinder to rotate, the design that support shaft is fixed (is commonly called as
Rotor cylinder), reach while ensureing the rigidity of rotor, reduced the rotary inertia of rotor rotating part, and then reach fall
The installed capacity of low dragging motor.Cutter cylinder spring bearing uses needle bearing at present, is characterized in compact conformation, substantially
Ensure that normal operating rate and operating accuracy.But, use needle bearing to there is also following shortcoming:
1, flying knife cylinder processing and fabricating is complicated, and the process-cycle is long, and cost is high, needs highly difficult processing method and special equipment to add
Work.
2, the problem needing after there is operating abrasion for a long time to change.Due to its mounting structure, change bearing
The most difficult.
3, the parts of needle bearing are to need Quenching Treatment to can be only achieved preferable working effect, and needle bearing needs simultaneously
Axially location, the problem such as multiple bearing Planar Mechanisms when supporting all can increase processing and the difficulty of assembling.Its processing and assembling essence
Degree also needs to be improved further.
4, needle bearing is due to its compact conformation, and cages for needle uses steel mostly, and the use simultaneously of number set has bigger
Running noise.
5, it is extremely difficult to preferable support accuracy requirement, it is impossible to fully meet high-precision crosscutting demand.
How to design a kind of cutter cylinder crosscutting rotor of swinging flying knife, construction design of journal bearings is reasonable, can improve work essence
Degree, reduces the complexity of processing and fabricating, improves the combination property of device further.This technology being the most urgently to be resolved hurrily is asked
Topic.
Summary of the invention
For solving above-mentioned technical problem, the present invention provides a kind of cutter cylinder crosscutting rotor of swinging flying knife, and bearing arrangement sets
Meter rationally, can reach high operating accuracy, reduces the complexity of processing and fabricating, improves the comprehensive of device further
Energy.
The purpose of the present invention is achieved by the following technical solutions:
A kind of cutter cylinder crosscutting rotor of swinging flying knife, including the flying knife cylinder for installing blade, for supporting flying knife cylinder
Support mandrel, described flying knife cylinder rotates around fixing support mandrel, it is characterised in that described support mandrel is offered along axis
Pressure oil passage, described support mandrel surface covers drive tab, and described drive tab is circular arc-like block, cylindrical in the middle part of described drive tab
Arc surface is provided with pressure oil cavity, and described support mandrel offers the pressure oil connecting described pressure oil passage with described pressure oil cavity
Subchannel, pressure oil is through described pressure oil passage and pressure oil subchannel, the pressure oil cavity between flying knife cylinder and drive tab
Form pressure oil reservoir, referred to as hydrodynamic journal liquid polymers.
Improvement to technique scheme: offer through hole, described support mandrel table bottom the pressure oil cavity of described drive tab
The position covering drive tab on face arranges the groove coincideing with described drive tab shape, in the described drive tab described groove of embedding also
Being formed with described support mandrel faying face and seal, pressure oil cavity center and the support mandrel of described drive tab are collectively forming radial
The pressure oil passage UNICOM of described pressure oil subchannel and support mandrel；The entrance of described support mandrel upward pressure oil passage with
Pressure oil oil inlet pipe connect, with leaving reasonable gap between circumferencial direction adjacent two bearings block, and with support mandrel cylindrical and time
Gap between rotor cylinder inner circle forms pressure oil passing away, and pressure oil is vertically from support mandrel and flying knife cylinder inner circle
Gap flows back to shaft end gear fuel tank, returns to pressure petrol station from shaft end gear fuel tank.
Further improvement to technique scheme: be at least uniformly arranged on one section of annular surface in described support mandrel
Three pieces of described drive tab, formed circle diameter direction support, the pressure oil cavity of each described drive tab respectively with corresponding one
Described pressure oil subchannel connects.
Further improvement to technique scheme: the annular surface of described support mandrel the most at least two spacer segments
On described drive tab is set.
Further improvement to technique scheme: described support mandrel surface and described flying knife cylinder medial surface keep suitable
The gap closed, to form pressure oil passing away.
Further improvement to technique scheme: the entrance of described support mandrel upward pressure oil passage is arranged on described
On the end face of support core axle or both ends of the surface.
Compared with prior art, advantages of the present invention and good effect are:
1, the present invention forms pressure oil reservoir between flying knife cylinder and drive tab, becomes hydrodynamic journal liquid polymers, therefore, has extremely low
Coefficient of friction, the coefficient of friction of needle bearing itself is about 1000 times of hydrodynamic journal liquid polymers.The present invention uses fluid pressure
Bearing is the most just negligible as spring bearing, the power loss of bearing itself.
2, the present invention has good structure precision retentivity.Hydrodynamic journal liquid polymers can be described as a kind of almost without abrasion
Bearing, can be long-term keep original detail physical dimension precision, it is not necessary to worry bearing be contained in inside roller, for a long time
Operating abrasion after replacing problem.
3, the present invention has more preferable support performance and support accuracy.The structure of the working portion of hydrodynamic journal liquid polymers is similar to
In sliding bearing, than needle bearing, there is greater compactness of structure, make support mandrel have bigger outside dimension, reach more preferable
Support effect and rigidity.Hydrodynamic journal liquid polymers inherently gapless operates, and has high running accuracy.Due to its supporting part
Position can layout flexibly, even if flying knife cylinder has the most small deformation under load effect, it is also possible to reach to be subject at cutter cylinder
During to the load of vertical direction, flying knife cylinder will not produce the displacement relative to support mandrel horizontal direction, reach needle bearing
The only support effect when zero running clearance.Reason is that the horizontal level precision only having rotor when cutting work directly affects
The relative positional accuracy of upper and lower two blades, is directly connected to cut paper effect.And the rotor using needle bearing to support reaches such
High precision will be all extremely difficult in terms of processing and assembling.
4, being similar to that sliding bearing due to hydrodynamic journal liquid polymers working portion, therefore, the present invention is without using height
The parts of hardness, and then reduce the difficulty of processing.The parts of needle bearing are to need Quenching Treatment to can be only achieved preferably work
Effect, the most typically no such needs of hydrodynamic journal liquid polymers.Needle bearing needs simultaneously axially location, multiple bearing support
Time the problem such as Planar Mechanisms all can increase processing and the difficulty of assembling.
5, needle bearing is due to its compact conformation, and cages for needle uses steel mostly, and the use simultaneously of number set has bigger
Running noise.Fluid present invention hydrostatic bearing is theoretically a kind of noiseless bearing, it is possible to reduce the running noise of these parts.
6, the extremely low power loss being had due to hydrodynamic journal liquid polymers and extremely low operating noise, axial at rotor
Having on direction and can arrange use with multiple spot, large area, the present invention can be greatly improved support mandrel to flying knife cylinder
Support effect.
Accompanying drawing explanation
Fig. 1 is one cutter cylinder swinging flying knife crosscutting rotor part section structural representation of the present invention；
Fig. 2 be in Fig. 1 C-C to cutaway view Amplified image.
Detailed description of the invention
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
Seeing Fig. 1, Fig. 2, one cutter cylinder swinging flying knife crosscutting rotor embodiment of the present invention, including for installing blade
Flying knife cylinder 1, for supporting the support mandrel 3 of flying knife cylinder 1, support mandrel 3 be fixed component, and flying knife cylinder 1 is around fixing
Support mandrel 3 rotate.Offer pressure oil passage 2 in support mandrel 3 along axis, cover drive tab 4 on support mandrel 3 surface,
Described drive tab 4 is circular arc-like block, is provided with pressure oil cavity 4-1, support mandrel 3 is opened in the middle part of drive tab 4 on external arc surface
If connecting the pressure oil subchannel 5 of described pressure oil passage 2 and the pressure oil cavity 4-1 of described drive tab 4, pressure oil is through described pressure
Power oil passage 2 and pressure oil subchannel 5, the pressure oil cavity 4-1 between flying knife cylinder 1 and drive tab 4 forms pressure oil reservoir, claims
For hydrodynamic journal liquid polymers.
Specifically: bottom the pressure oil cavity 4-1 of above-mentioned drive tab 4, offer through hole, the circle that drive tab 4 is suitable for for thickness
Arc block, the position covering drive tab 4 on support mandrel 3 surface arranges the groove coincideing with drive tab 4 shape, by drive tab
4 embed in groove and form sealing with support mandrel 3 faying face, and the pressure oil cavity 4-1 center of drive tab 4 is with support mandrel 3 altogether
With pressure oil passage 2 UNICOM forming the pressure oil subchannel 5 along support mandrel 3 radial radiation shape and support mandrel 3.
The entrance of above-mentioned support mandrel 3 upward pressure oil passage 2 is connected with pressure oil oil inlet pipe, with adjacent two axles of circumferencial direction
Leave reasonable gap between supporting block 4, and and support mandrel 3 cylindrical and flying knife cylinder 1 inner circle between gap form pressure oil row
Going out passage, pressure oil flows back to shaft end gear fuel tank, from axle head tooth from the gap of support mandrel 3 with flying knife cylinder 1 inner circle vertically
Wheel fuel tank returns to pressure petrol station.The entrance of support mandrel 3 upward pressure oil passage 2 is arranged on end face or the two ends of support mandrel 3
On face.
Also may be used as in figure 2 it is shown, be uniformly arranged 3 pieces of drive tab 4(drive tab 4 on one section of annular surface in support mandrel 3
To arrange more than 3 pieces), form circle diameter direction and support (as in Fig. 2,3 outwardly pointing arrows represent support force direction, Fig. 2
The arrow of one the downward finger in middle the top represents carrying direction), the pressure oil cavity 4-1 of each described drive tab 4 is respectively with corresponding
A pressure oil subchannel 5 connect, 3 pressure oil subchannels 5 are radially arranged radially along support mandrel 3, adjacent pressure
Angle between oil subchannel 5 is 120 °.
As it is shown in figure 1, arrange described drive tab 4 on the annular surface of the most at least two spacer segments in support mandrel 3.
Support mandrel 3 surface and flying knife cylinder 1 medial surface keep the gap being suitable for, to form pressure oil passing away.
When the pressure oil with applicable pressure enters through the entrance of pressure oil passage 2 from pressure oil oil inlet pipe, then by dividing
Cloth pressure oil subchannel 5 in support mandrel 3 enters in the pressure oil cavity 4-1 in drive tab 4 and when being full of, and pressure oil is incited somebody to action back
Rotor cylinder 1 holds up, and forms pressure oil reservoir, become hydrodynamic journal liquid polymers between flying knife cylinder 1 and drive tab 4.When flying knife cylinder 1
During rotation, form fluid friction real, purely.
In sum, the present invention uses the cutter cylinder crosscutting rotor of swinging flying knife of hydrodynamic journal liquid polymers to compare existing employing
The rotor of needle bearing has obvious technical advantage and the value promoted the use of.
Certainly, described above is not limitation of the present invention, and the present invention is also not limited to the example above, and this technology is led
Change that the those of ordinary skill in territory is made in the essential scope of the present invention, retrofit, add or replace, also should belong to this
Bright protection domain.
Claims (8)
1. the crosscutting rotor of cutter cylinder swinging flying knife, including the flying knife cylinder for installing blade, for supporting flying knife
The support mandrel of cylinder, described flying knife cylinder rotates around fixing support mandrel, it is characterised in that described support mandrel is opened along axis
If pressure oil passage, described support mandrel surface cover drive tab, described drive tab is circular arc-like block, in the middle part of described drive tab outside
Arc-shaped surface is provided with pressure oil cavity, and described support mandrel offers the pressure connecting described pressure oil passage with described pressure oil cavity
Oil subchannel, pressure oil is through described pressure oil passage and pressure oil subchannel, the pressure oil between flying knife cylinder and drive tab
Chamber forms pressure oil reservoir.
2. according to the cutter cylinder crosscutting rotor of swinging flying knife described in claim 1, it is characterised in that the pressure of described drive tab
Offering through hole bottom power oil pocket, the position that described support mandrel surface covers drive tab arranges identical with described drive tab shape
Groove, described drive tab embeds in described groove and is formed with described support mandrel faying face and seals, the pressure of described drive tab
Power oil pocket center and support mandrel are collectively forming the pressure oil passage connection of radial described pressure oil subchannel and support mandrel
Logical；The entrance of described support mandrel upward pressure oil passage is connected with pressure oil oil inlet pipe, with circumferencial direction adjacent two bearings block it
Between leave reasonable gap, and and support mandrel cylindrical and flying knife cylinder inner circle between gap form pressure oil passing away, pressure
Power oil gap from support mandrel Yu flying knife cylinder inner circle vertically flows back to shaft end gear fuel tank, returns to press from shaft end gear fuel tank
Power petrol station.
3. according to the cutter cylinder crosscutting rotor of swinging flying knife described in claim 1 or 2, it is characterised in that described support mandrel
On one section of annular surface on be at least uniformly arranged three pieces of described drive tab, form circle diameter direction and support, each described axle
The pressure oil cavity of supporting block connects with a corresponding described pressure oil subchannel respectively.
4. according to the cutter cylinder crosscutting rotor of swinging flying knife described in claim 1 or 2, it is characterised in that described support mandrel
The most at least on the annular surface of two spacer segments, described drive tab is set.
5. according to the cutter cylinder crosscutting rotor of swinging flying knife described in claim 3, it is characterised in that described support mandrel is along axle
On the annular surface of at least two spacer segments, described drive tab is set.
6. according to the cutter cylinder crosscutting rotor of swinging flying knife described in claim 1 or 2, it is characterised in that described support mandrel
Surface and described flying knife cylinder medial surface keep the gap being suitable for, to form pressure oil passing away.
7. according to the cutter cylinder crosscutting rotor of swinging flying knife described in claim 5, it is characterised in that described support mandrel surface
Applicable gap is kept, to form pressure oil passing away with described flying knife cylinder medial surface.
8. according to the cutter cylinder crosscutting rotor of swinging flying knife described in claim 2, it is characterised in that press in described support mandrel
The entrance of power oil passage is arranged in end face or the both ends of the surface of described support mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610590689.7A CN106195005B (en) | 2016-07-26 | 2016-07-26 | A kind of crosscutting rotor of knife cylinder swinging flying knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610590689.7A CN106195005B (en) | 2016-07-26 | 2016-07-26 | A kind of crosscutting rotor of knife cylinder swinging flying knife |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106195005A true CN106195005A (en) | 2016-12-07 |
| CN106195005B CN106195005B (en) | 2018-11-09 |
Family
ID=57494918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610590689.7A Active CN106195005B (en) | 2016-07-26 | 2016-07-26 | A kind of crosscutting rotor of knife cylinder swinging flying knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106195005B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892482A (en) * | 2022-07-13 | 2022-08-12 | 徐州徐工筑路机械有限公司 | Cold milling type milling machine for cleaning road surface |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2432917A1 (en) * | 1974-07-09 | 1976-01-29 | Polysius Ag | Rotating support roller for heavyweight horizontal cylinder - has three point internal support element with hydrostatic bearing |
| US3994193A (en) * | 1973-10-01 | 1976-11-30 | Domtar Limited | Air bearing slitter |
| US5393290A (en) * | 1991-05-03 | 1995-02-28 | Sulzer-Escher Wyss Gmbh | Roll with adjustable deflection |
-
2016
- 2016-07-26 CN CN201610590689.7A patent/CN106195005B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3994193A (en) * | 1973-10-01 | 1976-11-30 | Domtar Limited | Air bearing slitter |
| DE2432917A1 (en) * | 1974-07-09 | 1976-01-29 | Polysius Ag | Rotating support roller for heavyweight horizontal cylinder - has three point internal support element with hydrostatic bearing |
| US5393290A (en) * | 1991-05-03 | 1995-02-28 | Sulzer-Escher Wyss Gmbh | Roll with adjustable deflection |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892482A (en) * | 2022-07-13 | 2022-08-12 | 徐州徐工筑路机械有限公司 | Cold milling type milling machine for cleaning road surface |
| CN114892482B (en) * | 2022-07-13 | 2022-09-27 | 徐州徐工筑路机械有限公司 | Cold milling type milling machine for cleaning road surface |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106195005B (en) | 2018-11-09 |
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