CN202969431U - Arm head guide device and double-wheel slot milling machine with the same - Google Patents
Arm head guide device and double-wheel slot milling machine with the same Download PDFInfo
- Publication number
- CN202969431U CN202969431U CN 201220674513 CN201220674513U CN202969431U CN 202969431 U CN202969431 U CN 202969431U CN 201220674513 CN201220674513 CN 201220674513 CN 201220674513 U CN201220674513 U CN 201220674513U CN 202969431 U CN202969431 U CN 202969431U
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- guide wheel
- oil pipe
- mud tube
- installation portion
- arm head
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Abstract
The utility model provides an arm head guide device and a double-wheel slot milling machine with the same. The arm head guide device is used for being fixed on an arm frame of the double-wheel slot milling machine, and comprises a support body, a steel wire rope guide assembly, an oil pipe guide assembly and a slurry pipe guide assembly. The support body is used for being detachably connected with the end portion of the arm frame, the steel wire rope guide assembly is arranged in the middle of the support body, and the oil pipe guide assembly and the slurry pipe guide assembly are detachably arranged on two sides of the steel wire rope guide assembly. According to the arm head guide device and the double-wheel slot milling machine with the same, the steel wire rope guide assembly, the oil pipe guide assembly and the slurry pipe guide assembly are arranged on the end portion of the arm frame through the support body, and therefore the oil pipe guide assembly and the slurry pipe guide assembly can be reliably fixed and can be effectively prevented from swinging, and guide reliability can be improved. Compared with the prior art, the arm head guide device is directly fixed on the end portion of the arm frame, a set of lifting mechanisms can be removed, and therefore the double-wheel slot milling machine can be simple in structure and convenient to control and operate. Besides, machining and installation can be convenient due to a detachable assembly method of the arm head guide device and the double-wheel slot milling machine with the same.
Description
Technical field
The utility model relates to the two-wheel flute milling machine field, in particular to a kind of arm head guiding device and have its two-wheel flute milling machine.
Background technology
Two-wheel flute milling machine is mainly used in building foundation and diaphragm wall engineering construction, be applicable to the operation of large degree of depth excavation, have that cutting force is strong, good stability, high efficiency and low-risk advantage, can effectively control the construction sedimentation, all be far superior to other equipment aspect one-tenth groove depth, grooving speed and vertical precision.Simultaneously, construction noise is low, can effectively reduce the impact on environment.
During two-wheel flute milling machine work, two hydraulic motors drive and mill wheel rotation (opposite direction), earth and rock below cutting, utilize cutting teeth that they are broken into fritter and scroll up, mix with stable mud in groove simultaneously, then by an other hydraulic motor drive centrifugal pump constantly soil, rubble and mud pumping to the mud shaker subsystem, after being pumped into the mud process screening system processing on earth's surface, clean mud is sent back in foundation ditch again, and discarded mud, rubble are abandoned processing.The mud of loss is compensated by pulp feeding system.
Usually, two-wheel flute milling machine mills wheel and vertically hangs the facility work by jib, on ground and mill and be connected with hydraulic tube, mud tube between wheel, and hang and establish the wire rope that mills wheel, folding and unfolding for fluid,matching pressure pipe, mud tube, in prior art, general employing is hung oneself at jib and is established a guiding mechanism to hydraulic tube, mud tube guiding, therefore one cover hoisting mechanism need to be set separately to be hung and establishes guiding mechanism, and because guiding mechanism only is connected with jib by wire rope, easily swing, guide effect is relatively poor.
The utility model content
The utility model aims to provide a kind of reliable arm head guiding device and have its two-wheel flute milling machine of leading.
The utility model provides a kind of arm head guiding device on the one hand, be used for being fixed on the jib of two-wheel flute milling machine, comprise the rack body that removably connects for the end with jib, be arranged on the wire rope guidance set at rack body middle part, and the oil pipe guidance set and the mud tube guidance set that are removably disposed in wire rope guidance set both sides.
Further, rack body comprises two crossbeams and is connected in installing plate between two crossbeams middle parts, and the two ends of installing plate are respectively equipped with pulley installation portion and guide wheel for steel wire installation portion; Be respectively equipped with oil pipe guide wheel bracket installation portion and mud tube guide wheel bracket installation portion on the crossbeam of installing plate both sides.
Further, the two ends of crossbeam are fixedly installed respectively fixed head, and the fixed head that is positioned at the first side of installing plate forms oil pipe guide wheel bracket installation portion, and the fixed head that is positioned at the second side of installing plate forms mud tube guide wheel bracket installation portion.
Further, the wire rope guidance set comprises pulley and guide wheel for steel wire, removably is connected by bearing pin respectively between pulley and pulley installation portion, between guide wheel for steel wire and guide wheel for steel wire installation portion, between oil pipe guidance set and oil pipe guide wheel bracket installation portion and between mud tube guidance set and mud tube guide wheel bracket installation portion.
Further, the oil pipe guidance set comprises that oil pipe guide wheel bracket and pivotable are arranged on the oil pipe directive wheel on the oil pipe guide wheel bracket; Be provided with oil pipe guide wheel bracket installation portion on rack body, the oil pipe guide wheel bracket is removably mounted on oil pipe guide wheel bracket installation portion.
Further, the oil pipe guide wheel bracket comprises two oil pipe directive wheel support arms that are oppositely arranged, and is provided with the pivot hole that the oil pipe directive wheel is installed on two oil pipe directive wheel support arms; Be in the shape of the letter V on two oil pipe directive wheel support arms and be provided with the spacing strut of oil pipe, the end of the spacing strut of oil pipe is provided with and prevents that oil pipe from deviating from the oil pipe gag lever post of oil pipe directive wheel.
Further, be provided with a plurality of the first pin shaft holes on oil pipe guide wheel bracket installation portion, on the oil pipe guide wheel bracket, corresponding the first pin shaft hole is provided with a plurality of the second pin shaft holes, is equipped with the first bearing pin in the first pin shaft hole and the second pin shaft hole.
Further, the mud tube guidance set comprises that mud tube guide wheel bracket and pivotable are arranged on the mud tube directive wheel on the mud tube guide wheel bracket; Be provided with mud tube guide wheel bracket installation portion on rack body, the mud tube guide wheel bracket is removably mounted on mud tube guide wheel bracket installation portion.
Further, the mud tube guide wheel bracket comprises two mud tube directive wheel support arms that are oppositely arranged, and is provided with the pivot hole that the mud tube directive wheel is installed on two mud tube directive wheel support arms; Two mud tube directive wheel support arms are in the shape of the letter V and are provided with the spacing strut of mud tube, and the end of the spacing strut of mud tube is provided with and prevents that mud tube from deviating from the mud tube gag lever post of mud tube directive wheel.
Further, be provided with a plurality of the 3rd pin shaft holes on mud tube guide wheel bracket installation portion, on the mud tube guide wheel bracket, corresponding the 3rd pin shaft hole is provided with a plurality of the 4th pin shaft holes, is equipped with the second bearing pin in the 3rd pin shaft hole and the 4th pin shaft hole.
Further, the wire rope guidance set comprises pulley and guide wheel for steel wire; The rack body both sides are respectively arranged with pulley installation portion and guide wheel for steel wire installation portion, and the pulley pivotable is arranged on the pulley installation portion, and the guide wheel for steel wire pivotable is arranged on the guide wheel for steel wire installation portion.
Further, also be provided with the 5th pin shaft hole that is connected with jib end bearing pin on rack body.
The utility model also provides a kind of two-wheel flute milling machine on the other hand, comprises jib and aforesaid arm head guiding device, and the arm head guiding device removably is connected with the end of jib by rack body.
According to arm head guiding device of the present utility model and have its two-wheel flute milling machine, by rack body, wire rope guidance set, oil pipe guidance set and mud tube guidance set are arranged on the jib end, thereby make oil pipe guidance set and mud tube guidance set reliably fixing, effectively prevent from swinging, improve the guiding reliability.Adopting compared to existing technology hangs oneself at jib establishes the scheme of guiding mechanism guiding, and the utility model directly is fixed on the jib end with the arm head guiding device, can reduce by a cover hoisting mechanism, thereby make the structure of two-wheel flute milling machine simpler, controls and more convenient operation.In addition, the utility model adopts dismountable assembling mode, processing and easy for installation.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the perspective view according to arm head guiding device of the present utility model;
Fig. 2 is the perspective view according to the rack body of arm head guiding device of the present utility model;
Fig. 3 a is the perspective view according to the pulley of arm head guiding device of the present utility model;
Fig. 3 b is the perspective view according to the guide wheel for steel wire of arm head guiding device of the present utility model;
Fig. 4 a is the perspective view according to the oil pipe guide wheel bracket of arm head guiding device of the present utility model;
Fig. 4 b is the perspective view according to the oil pipe directive wheel of arm head guiding device of the present utility model;
Fig. 5 a is the perspective view according to the mud tube guide wheel bracket of arm head guiding device of the present utility model; And
Fig. 5 b is the perspective view according to the mud tube directive wheel of arm head guiding device of the present utility model.
The specific embodiment
Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
As shown in Figure 1, according to the arm head guiding device for two-wheel flute milling machine of the present utility model, comprise for the fixing rack body 10 in jib end, with the wire rope guidance set 20 that is arranged on rack body 10 middle parts, and the oil pipe guidance set 30 and the mud tube guidance set 40 that are removably disposed in wire rope guidance set 20 both sides.The utility model all is fixed on wire rope guidance set 20, oil pipe guidance set 30 and mud tube guidance set 40 threes on rack body 10, and rack body 10 is fixed on the jib end, thereby make oil pipe guidance set 30 and mud tube guidance set 40 reliably fixing, effectively prevent from swinging, improve the guiding reliability.And adopt compared to existing technology to hang oneself at jib and establish the scheme of guiding mechanism guiding, the utility model directly is fixed on the jib end with the arm head guiding device, can reduce by a cover hoisting mechanism, thereby make the structure of two-wheel flute milling machine simpler, control and more convenient operation.
As depicted in figs. 1 and 2, rack body 10 is the framework that is comprised of crossbeam 16 and longeron, and the middle part of two crossbeams 16 is connected with installing plate 17, and wire rope guidance set 20 is arranged on installing plate 17.Particularly, wire rope guidance set 20 comprises pulley 21 and guide wheel for steel wire 22, and other pulleys on pulley 21 and jib consist of assembly pulleys.The two ends of installing plate 17 are respectively equipped with pulley installation portion 11 and guide wheel for steel wire installation portion 12, pulley 21 and guide wheel for steel wire 22 correspondences are arranged on pulley installation portion 11 and guide wheel for steel wire installation portion 12, a side that is rack body 10 is provided with pulley installation portion 11, pulley 21 is arranged on pulley installation portion 11 by the bearing pin pivotable, the opposite side of rack body 10 is provided with guide wheel for steel wire installation portion 12, and guide wheel for steel wire 22 is arranged on guide wheel for steel wire installation portion 12 by the bearing pin pivotable.
As shown in Figure 2, be respectively equipped with oil pipe guide wheel bracket installation portion 13 and mud tube guide wheel bracket installation portion 14 on the crossbeam 16 of installing plate 17 both sides of rack body 10.The two ends of crossbeam 16 are fixedly installed respectively fixed head 18, and the fixed head 18 that is positioned at the first side of installing plate 17 forms oil pipe guide wheel bracket installation portion 13, and the fixed head 18 that is positioned at the second side of installing plate 17 forms mud tube guide wheel bracket installation portion 14.
As shown in Fig. 4 a and Fig. 4 b, and in conjunction with Fig. 1 and Fig. 2, oil pipe guidance set 30 comprises oil pipe guide wheel bracket 31 and oil pipe directive wheel 32, oil pipe guide wheel bracket 31 comprises two oil pipe directive wheel support arm 31d that are oppositely arranged, be provided with the pivot hole that oil pipe directive wheel 32 is installed on two oil pipe directive wheel support arm 31d, pivotal axis is located in pivot hole is arranged on oil pipe guide wheel bracket 31 oil pipe directive wheel 32 pivotables.
Preferably, be in the shape of the letter V on two oil pipe directive wheel support arm 31d and be provided with the spacing strut 31b of oil pipe, the spacing strut 31b of oil pipe end arranges near the oil pipe gag lever post 31c(of oil pipe directive wheel 32 wheel faces as shown in Figure 1), thereby consist of certain restrictions to being positioned at oil pipe directive wheel 32, prevent that oil pipe from deviating from oil pipe directive wheel 32.
As depicted in figs. 1 and 2, oil pipe guide wheel bracket 31 is removably mounted on oil pipe guide wheel bracket installation portion 13, as employing be spirally connected, pin joint etc.Particularly, at the utility model preferably in embodiment, as shown in Fig. 1, Fig. 2, Fig. 4 a and Fig. 4 b, be provided with four the first pin shaft hole 13a on oil pipe guide wheel bracket installation portion 13, on oil pipe guide wheel bracket 31, corresponding the first pin shaft hole 13a is provided with four the second pin shaft hole 31a, wear the first bearing pin 33 in the first pin shaft hole 13a and the second pin shaft hole 31a, thereby oil pipe guide wheel bracket 31 is fixed on rack body 10.The employing bearing pin connects, and has supporting capacity strong, the advantage of convenient disassembly.
The structure of mud tube guidance set 40 and set-up mode are similar to oil pipe guidance set 30.Particularly, as shown in Fig. 5 a and Fig. 5 b, and in conjunction with Fig. 1 and Fig. 2, mud tube guidance set 40 comprises mud tube guide wheel bracket 41 and mud tube directive wheel 42, mud tube guide wheel bracket 41 comprises two mud tube directive wheel support arm 41d that are oppositely arranged, be provided with the pivot hole that mud tube directive wheel 42 is installed on two mud tube directive wheel support arm 41d, pivotal axis is located in pivoting hole so that mud tube directive wheel 42 pivotables are arranged on mud tube guide wheel bracket 41.Preferably, two mud tube directive wheel support arm 41d are in the shape of the letter V and are provided with the spacing strut 41b of mud tube, the spacing strut 41b of mud tube end is provided with and prevents that mud tube gag lever post 41c(that mud tube deviates from mud tube directive wheel 42 is as shown in Figure 1), thus reliability improved.
As shown in Figure 2, be provided with mud tube guide wheel bracket installation portion 14 on rack body 10, in conjunction with shown in Figure 1, mud tube guide wheel bracket 41 is removably mounted on mud tube guide wheel bracket installation portion 14.More specifically, as shown in Fig. 1, Fig. 2, Fig. 5 a and Fig. 5 b, be provided with four the 3rd pin shaft hole 14a on mud tube guide wheel bracket installation portion 14, on mud tube guide wheel bracket 41, corresponding the 3rd pin shaft hole 14a is provided with four the 4th pin shaft hole 41a, is equipped with the second bearing pin 43 in the 3rd pin shaft hole 14a and the 4th pin shaft hole 41a.The employing bearing pin connects, and comparing is spirally connected waits other modes to fix, and specifically reliability is high, and supporting capacity is strong, and the advantage of convenient disassembly.
In addition, as shown in Figure 2, also be provided with the 5th pin shaft hole 15 on rack body 10, the jib end is provided with the pin shaft hole corresponding with the 5th pin shaft hole 15, and namely rack body 10 also is connected with the jib end by bearing pin.
Each assembly of arm head guiding device of the present utility model, namely between pulley 21 and pulley installation portion 11, removably be connected by bearing pin respectively between guide wheel for steel wire 22 and guide wheel for steel wire installation portion 12, between oil pipe guidance set 30 and oil pipe guide wheel bracket installation portion 13 and between mud tube guidance set 40 and mud tube guide wheel bracket installation portion 14.Thereby make all parts can adopt parts processing, Split type structure is simple, then adopt bearing pin to connect, be easy to processing and manufacturing, assembling, and when transportation, can remove all kinds of bearing pins, the arm head guiding device is decomposed into oil pipe guidance set 30 and mud tube guidance set 40 and rack body 10 split transportations, make the transportation carrying more convenient.
The utility model also provides a kind of two-wheel flute milling machine that is provided with aforementioned arm head guiding device in the jib end, by the arm head guiding device is set, can be more effectively to oil pipe and mud tube guiding, and compared to existing technology, reduce by a cover hoisting mechanism, thereby can simplify two-wheel flute milling machine structure and control system, make the two-wheel flute milling machine operation easier.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
According to arm head guiding device of the present utility model and have its two-wheel flute milling machine, by rack body 10, wire rope guidance set 20, oil pipe guidance set 30 and mud tube guidance set 40 are arranged on the jib end, thereby make oil pipe guidance set 30 and mud tube guidance set 40 reliably fixing, effectively prevent from swinging, improve the guiding reliability.Adopting compared to existing technology hangs oneself at jib establishes the scheme of guiding mechanism guiding, and the utility model directly is fixed on the jib end with the arm head guiding device, can reduce by a cover hoisting mechanism, thereby make the structure of two-wheel flute milling machine simpler, controls and more convenient operation.In addition, the utility model adopts dismountable assembling mode, processing and easy for installation.
The above is only preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (13)
1. arm head guiding device, be used for being fixed on the jib of two-wheel flute milling machine, it is characterized in that, comprise the rack body (10) that removably connects for the end with described jib, be arranged on the wire rope guidance set (20) at described rack body (10) middle part, and the oil pipe guidance set (30) and the mud tube guidance set (40) that are removably disposed in described wire rope guidance set (20) both sides.
2. arm head guiding device according to claim 1, is characterized in that,
Described rack body (10) comprises two crossbeams (16) and is connected in installing plate (17) between described two crossbeams (16) middle parts, and the two ends of described installing plate (17) are respectively equipped with pulley installation portion (11) and guide wheel for steel wire installation portion (12);
Be respectively equipped with oil pipe guide wheel bracket installation portion (13) and mud tube guide wheel bracket installation portion (14) on the described crossbeam (16) of described installing plate (17) both sides.
3. arm head guiding device according to claim 2, is characterized in that,
The two ends of described crossbeam (16) are fixedly installed respectively fixed head (18), the described fixed head (18) that is positioned at the first side of described installing plate (17) forms described oil pipe guide wheel bracket installation portion (13), and the described fixed head (18) that is positioned at the second side of described installing plate (17) forms described mud tube guide wheel bracket installation portion (14).
4. arm head guiding device according to claim 3, is characterized in that,
Described wire rope guidance set (20) comprises pulley (21) and guide wheel for steel wire (22), removably is connected by bearing pin respectively between described pulley (21) and described pulley installation portion (11), between described guide wheel for steel wire (22) and described guide wheel for steel wire installation portion (12), between described oil pipe guidance set (30) and described oil pipe guide wheel bracket installation portion (13) and between described mud tube guidance set (40) and described mud tube guide wheel bracket installation portion (14).
5. arm head guiding device according to claim 1, is characterized in that,
Described oil pipe guidance set (30) comprises that oil pipe guide wheel bracket (31) and pivotable are arranged on the oil pipe directive wheel (32) on described oil pipe guide wheel bracket (31);
Be provided with oil pipe guide wheel bracket installation portion (13) on described rack body (10), described oil pipe guide wheel bracket (31) is removably mounted on described oil pipe guide wheel bracket installation portion (13).
6. arm head guiding device according to claim 5, is characterized in that,
Described oil pipe guide wheel bracket (31) comprises two the oil pipe directive wheel support arms (31d) that are oppositely arranged, and is provided with the pivot hole that described oil pipe directive wheel (32) is installed on two described oil pipe directive wheel support arms (31d);
Being in the shape of the letter V on two described oil pipe directive wheel support arms (31d) is provided with the spacing strut of oil pipe (31b), and the end of the spacing strut of described oil pipe (31b) is provided with and prevents that oil pipe from deviating from the oil pipe gag lever post (31c) of described oil pipe directive wheel (32).
7. arm head guiding device according to claim 5, is characterized in that,
Be provided with a plurality of the first pin shaft holes (13a) on described oil pipe guide wheel bracket installation portion (13), upper corresponding described the first pin shaft hole of described oil pipe guide wheel bracket (31) (13a) is provided with a plurality of the second pin shaft holes (31a), is equipped with the first bearing pin (33) in described the first pin shaft hole (13a) and described the second pin shaft hole (31a).
8. arm head guiding device according to claim 1, is characterized in that,
Described mud tube guidance set (40) comprises that mud tube guide wheel bracket (41) and pivotable are arranged on the mud tube directive wheel (42) on described mud tube guide wheel bracket (41);
Be provided with mud tube guide wheel bracket installation portion (14) on described rack body (10), described mud tube guide wheel bracket (41) is removably mounted on described mud tube guide wheel bracket installation portion (14).
9. arm head guiding device according to claim 8, is characterized in that,
Described mud tube guide wheel bracket (41) comprises two the mud tube directive wheel support arms (41d) that are oppositely arranged, and is provided with the pivot hole that described mud tube directive wheel (42) is installed on two described mud tube directive wheel support arms (41d);
Two described mud tube directive wheel support arms (41d) are in the shape of the letter V and are provided with the spacing strut of mud tube (41b), and the end of the spacing strut of described mud tube (41b) is provided with and prevents that mud tube from deviating from the mud tube gag lever post (41c) of described mud tube directive wheel (42).
10. arm head guiding device according to claim 8, is characterized in that,
Be provided with a plurality of the 3rd pin shaft holes (14a) on described mud tube guide wheel bracket installation portion (14), upper corresponding described the 3rd pin shaft hole of described mud tube guide wheel bracket (41) (14a) is provided with a plurality of the 4th pin shaft holes (41a), is equipped with the second bearing pin (43) in described the 3rd pin shaft hole (14a) and described the 4th pin shaft hole (41a).
11. arm head guiding device according to claim 1 is characterized in that,
Described wire rope guidance set (20) comprises pulley (21) and guide wheel for steel wire (22);
Described rack body (10) both sides are respectively arranged with pulley installation portion (11) and guide wheel for steel wire installation portion (12), described pulley (21) pivotable is arranged on described pulley installation portion (11), and described guide wheel for steel wire (22) pivotable is arranged on described guide wheel for steel wire installation portion (12).
12. arm head guiding device according to claim 1 is characterized in that,
Also be provided with the 5th pin shaft hole (15) that is connected with described jib end bearing pin on described rack body (10).
13. a two-wheel flute milling machine comprises jib, it is characterized in that, also comprises the described arm head guiding device of any one in claim 1 to 12, described arm head guiding device removably is connected with the end of described jib by rack body (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220674513 CN202969431U (en) | 2012-12-07 | 2012-12-07 | Arm head guide device and double-wheel slot milling machine with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220674513 CN202969431U (en) | 2012-12-07 | 2012-12-07 | Arm head guide device and double-wheel slot milling machine with the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202969431U true CN202969431U (en) | 2013-06-05 |
Family
ID=48510525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220674513 Expired - Lifetime CN202969431U (en) | 2012-12-07 | 2012-12-07 | Arm head guide device and double-wheel slot milling machine with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202969431U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108130927A (en) * | 2017-12-08 | 2018-06-08 | 徐工集团工程机械有限公司 | A kind of soil milling device |
| CN112079210A (en) * | 2020-09-28 | 2020-12-15 | 上海中联重科桩工机械有限公司 | Hose winding and unwinding devices and foundation construction equipment |
-
2012
- 2012-12-07 CN CN 201220674513 patent/CN202969431U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108130927A (en) * | 2017-12-08 | 2018-06-08 | 徐工集团工程机械有限公司 | A kind of soil milling device |
| CN108130927B (en) * | 2017-12-08 | 2020-06-12 | 徐工集团工程机械有限公司 | Soil milling equipment |
| CN112079210A (en) * | 2020-09-28 | 2020-12-15 | 上海中联重科桩工机械有限公司 | Hose winding and unwinding devices and foundation construction equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |