CN208649973U - A kind of automobile-used slewing equipment of dust suppression - Google Patents
A kind of automobile-used slewing equipment of dust suppression Download PDFInfo
- Publication number
- CN208649973U CN208649973U CN201821116663.XU CN201821116663U CN208649973U CN 208649973 U CN208649973 U CN 208649973U CN 201821116663 U CN201821116663 U CN 201821116663U CN 208649973 U CN208649973 U CN 208649973U
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- China
- Prior art keywords
- gear
- worm
- dust suppression
- automobile
- plate
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- 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.)
- Expired - Fee Related
Links
- 239000000428 dust Substances 0.000 title claims abstract description 41
- 230000001629 suppression Effects 0.000 title claims abstract description 35
- 239000007921 spray Substances 0.000 claims description 26
- 239000010720 hydraulic oil Substances 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000005507 spraying Methods 0.000 description 7
- 239000003245 coal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000004224 protection Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Special Spraying Apparatus (AREA)
Abstract
The utility model discloses a kind of automobile-used slewing equipments of dust suppression, including cabinet, the inside of the cabinet is equipped with first gear and worm and gear, the inside upper surface of cabinet is equipped with the second positioning ring, and the lower surface of first gear is equipped with the second locating slot corresponding with the second positioning ring, the upper surface of worm and gear is set there are two positioning plate, and the both ends of worm and gear are rotatablely connected by bearing and positioning plate, left surface positioned at the positioning plate in left side is equipped with motor, the output shaft of motor passes through positioning plate and is fixedly connected with worm and gear, the upper surface of cabinet is equipped with case lid, the automobile-used slewing equipment of this dust suppression, drive worm and gear in the upper rotation of positioning plate by the rotation of motor, the rotation of first gear can be driven by the rotation of worm and gear, power is provided to equipment, second positioning ring can be such that first gear smoothly runs in box house, Safety in utilization is improved, and cabinet can guarantee equipment, and equipment is prevented to be damaged.
Description
Technical field
The utility model relates to dust suppression vehicle technical field, specially a kind of automobile-used slewing equipment of dust suppression.
Background technique
Dust suppression vehicle is that the special vehicle for inhibiting dust pollution is realized by flushing liquors such as sprinkling dust suppression curing agent.Main clothes
Be engaged in railway, road and the high-incidence place of other dust, constructively, if dust suppression car owner by swing arm flusher, fluid reservoir,
Voluntarily carrier vehicle and control system composition, dust suppression vehicle transport coal fly dust prevention and cure of pollution for Railway Coal, are also widely used in it
Its anti-dust pollution of loose unpacked material transportational process and slag charge field, construction site, automobile transporting coal fugitive dust, are fixed the sand, steel at coal yard
Building materials, cement, the various outdoor stock ground ecological slope protections of enterprise etc., existing dust suppression vehicle spraying device can not carry out comprehensive
Rotation, need move vehicle when carrying out depositing dust, reduce the working efficiency of dust suppression vehicle, in the rotation safety compared with
It is low, it is easy to happen rollover, and spraying device cannot cannot be fixed when turning to certain angle.
Utility model content
The technical problems to be solved in the utility model is to overcome existing defect, provides a kind of automobile-used slewing equipment of dust suppression,
Sound construction, stablize it is durable, can be equipment carry out all-directional rotation, improve the working efficiency of dust suppression vehicle, brought to using
Convenience, and spraying device can be fixed when turning an angle, improve safety in utilization, Ke Yiyou
Effect solves the problems in background technique.
To achieve the above object, the utility model provides the following technical solutions: a kind of automobile-used slewing equipment of dust suppression, including case
Body, the inside of the cabinet are equipped with first gear and worm and gear, and the inside upper surface of cabinet is equipped with the second positioning ring, and first
The lower surface of gear be equipped with the second locating slot corresponding with the second positioning ring, the upper surface of worm and gear set there are two positioning
Plate, and the both ends of worm and gear are rotatablely connected by bearing and positioning plate, the left surface positioned at the positioning plate in left side is equipped with motor,
The output shaft of motor passes through positioning plate and is fixedly connected with worm and gear, and the upper surface of cabinet is equipped with case lid, and the upside of case lid is equipped with
Rotor plate, the lower surface of rotor plate are equipped with placing groove, and the inside of placing groove is equipped with second gear, and the upper surface of first gear is equipped with
Connecting column, one end of connecting column passes through case lid and is fixedly connected with second gear, and connecting column is connect by bearing with case lid, rotates
The upper surface of plate is set there are two the bracket of correspondence setting, and bracket is fixedly connected by mounting plate with rotor plate, and bracket is separate
One end of rotor plate is equipped with fixed disk, and the middle parts of two brackets is equipped with cannon spray head, and the inside of cannon spray head is equipped with fan, cannon spray head with
Hydraulic telescopic rod is equipped between rotor plate, the both ends of hydraulic telescopic rod pass through hinge and fix company with cannon spray head and rotor plate respectively
It connects, the upper surface of rotor plate is equipped with hydraulic pump and hydraulic oil container, and the side surface of cannon spray head sets that there are two locating piece, two locating pieces
It is symmetrical arranged, and locating piece is rotatablely connected by shaft and fixed disk, the rear surface positioned at the bracket of rear side is equipped with placement plate, puts
The lower surface for setting plate is equipped with electric telescopic rod, is equipped with locating rod at the telescopic end of electric telescopic rod, the upper surface of rotor plate is equipped with
Location hole corresponding with locating rod, the upper surface array distribution of case lid have location hole corresponding with locating rod, the right side of cabinet
Surface is equipped with single-chip microcontroller, and the input terminal of single-chip microcontroller is electrically connected with the output end of external power supply, the output end and hydraulic pump of single-chip microcontroller,
The input terminal of fan, motor and electric telescopic rod is electrically connected.
As a kind of optimal technical scheme of the utility model, the front and back side surface of the cabinet is equipped with L-type mounting plate,
And the upper surface of L-type mounting plate is equipped with stud.
As a kind of optimal technical scheme of the utility model, the rotor plate lower surface is equipped with the first positioning ring, case lid
Upper surface be equipped with the first locating slot corresponding with the first positioning ring.
As a kind of optimal technical scheme of the utility model, the right surface of the cannon spray head is equipped with protective cover, protective cover
It is fixedly connected by fixed bolt with cannon spray head.
As a kind of optimal technical scheme of the utility model, the cannon spray head left surface is equipped with sprayer, sprayer
Side surface is equipped with water inlet pipe.
As a kind of optimal technical scheme of the utility model, the hydraulic oil input terminal of the hydraulic pump passes through conduit and liquid
The hydraulic oil output end of pressure oil case is connected, and the hydraulic oil output end of hydraulic pump is inputted by conduit and the hydraulic oil of hydraulic telescopic rod
End is connected.
As a kind of optimal technical scheme of the utility model, the medial surface of the placing groove is equipped with gear grooved, rotor plate
Internal gear grooved and second gear is intermeshed.
As a kind of optimal technical scheme of the utility model, the side surface of the motor is equipped with mounting base, and mounting base is logical
Installation stud is crossed to be fixedly connected with the inside upper surface of cabinet.
As a kind of optimal technical scheme of the utility model, the front side of first gear is arranged in the worm and gear, and
Worm and gear and first gear are intermeshed.
Compared with prior art, the utility model has the benefit that
1. the automobile-used slewing equipment of dust suppression drives worm and gear in the upper rotation of positioning plate, passes through by the rotation of motor
The rotation of worm and gear can drive the rotation of first gear, provide power to equipment, the second positioning ring can make first gear
It is smoothly run in box house, improves safety in utilization, and cabinet can guarantee equipment, and equipment is prevented to be damaged.
2. the automobile-used slewing equipment of dust suppression, the rotation of second gear can be driven by first gear, second gear can be with
Rotor plate is rotated, the spraying device of dust suppression vehicle is allow to carry out all-direction rotation, can make to turn by the first positioning ring
Movable plate even running improves safety in utilization, and improves the working efficiency of dust suppression vehicle.
3. the automobile-used slewing equipment of dust suppression can carry out angle tune to the spraying device of dust suppression vehicle by hydraulic telescopic rod
It is whole, it offers convenience to using, improves the working efficiency of dust suppression vehicle, and protective cover can carry out the spraying device of dust suppression vehicle
Protection, can prevent fan to be damaged during operating, rotor plate can be fixed on case lid, be mentioned by locating rod
High safety in utilization.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model side schematic view；
Fig. 3 is the utility model section schematic diagram.
In figure: 1 cabinet, 2 case lids, 3 rotor plates, 4 mounting plates, 5 cannon spray heads, 6 locating pieces, 7 fixed disks, 8 sprayers, 9 hinges
Chain, 10 hydraulic telescopic rods, 11 first gears, 12 motors, 13 positioning plates, 14 worm and gears, 15L type mounting plate, 16 single-chip microcontrollers, 17
First positioning ring, 18 locating rods, 19 electric telescopic rods, 20 placement plates, 21 fans, 22 protective covers, 23 second gears, 24 connections
Column, 25 second positioning rings, 26 brackets, 27 hydraulic pumps, 28 hydraulic oil containers.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of automobile-used slewing equipment of dust suppression, including cabinet
1, the front and back side surface of cabinet 1 is equipped with L-type mounting plate 15, and the upper surface of L-type mounting plate 15 is equipped with stud, is convenient for equipment
Installation on the car body, offers convenience to using, and the inside of cabinet 1 is equipped with first gear 11 and worm and gear 14, worm and gear 14
The front side of first gear 11 is set, and worm and gear 14 and first gear 11 are intermeshed, by the rotation of worm and gear 14,
It is able to drive the rotation of first gear 11, the inside upper surface of cabinet 1 is equipped with the second positioning ring 25, and the following table of first gear 11
Face is equipped with second locating slot corresponding with the second positioning ring 25, convenient for first gear 11 in 1 inner rotation of cabinet, can prevent
First gear 11 causes equipment damage in 1 inside run-off the straight of cabinet, and the upper surface of worm and gear 14 sets that there are two positioning plates
13, and the both ends of worm and gear 14 are rotatablely connected by bearing and positioning plate 13, the left surface positioned at the positioning plate 13 in left side is set
There is motor 12, the output shaft of motor 12 passes through positioning plate 13 and is fixedly connected with worm and gear 14, and the side surface of motor 12 is equipped with peace
Seat is filled, mounting base is fixedly connected with the inside upper surface of cabinet 1 by installation stud, increases structural strength, improve using safe
Property, by the rotation of motor 12, it is able to drive rotation of the worm and gear 14 on positioning plate 13, the upper surface of cabinet 1 is equipped with case
Lid 2, the upside of case lid 2 are equipped with rotor plate 3, and 3 lower surface of rotor plate is equipped with the first positioning ring 17, the upper surface of case lid 2 be equipped with
Corresponding first locating slot of first positioning ring 17, the rotation convenient for rotor plate 3 in 2 upper surface of case lid, the lower surface of rotor plate 3
Equipped with placing groove, the inside of placing groove is equipped with second gear 23, and the medial surface of placing groove is equipped with gear grooved, inside rotor plate 3
Gear grooved and second gear 23 are intermeshed, and the upper surface of first gear 11 is equipped with connecting column 24, and one end of connecting column 24 passes through
Case lid 2 is fixedly connected with second gear 23, and connecting column 24 is connect by bearing with case lid 2, by the rotation of first gear 11,
The rotation that connecting column 24 can be driven can drive the rotation of second gear 23 by the rotation of connecting column 24, pass through the second tooth
The rotation of wheel 23 can drive the rotation of rotor plate 3, and the upper surface of rotor plate 3 is set there are two the bracket 26 of correspondence setting,
Bracket 26 is fixedly connected by mounting plate 4 with rotor plate 3, and bracket 26 is equipped with fixed disk 7, two branch far from one end of rotor plate 3
The middle part of frame 26 is equipped with cannon spray head 5, and the inside of cannon spray head 5 is equipped with fan 21, and the right surface of cannon spray head 5 is equipped with protective cover 22, protects
Shield 22 is fixedly connected by fixed bolt with cannon spray head 5, is prevented sundries from entering inside cannon spray head 5, can be protected to equipment
Shield, between cannon spray head 5 and rotor plate 3 be equipped with hydraulic telescopic rod 10, the both ends of hydraulic telescopic rod 10 pass through hinge 9 respectively with spray
Mist cylinder 5 is fixedly connected with rotor plate 3, and the upper surface of rotor plate 3 is equipped with hydraulic pump 27 and hydraulic oil container 28, hydraulic pump 27 it is hydraulic
Oily input terminal is connected by conduit with the hydraulic oil output end of hydraulic oil container 28, and the hydraulic oil output end of hydraulic pump 27 passes through conduit
It is connected with the hydraulic oil input terminal of hydraulic telescopic rod 10, the side surface of cannon spray head 5 is set there are two locating piece 6, and two locating pieces 6 are right
Claim setting, and locating piece 6 is rotatablely connected by shaft and fixed disk 7, the rear surface positioned at the bracket 26 of rear side is equipped with placement plate
20, the lower surface of placement plate 20 is equipped with electric telescopic rod 19, is equipped with locating rod 18, rotor plate at the telescopic end of electric telescopic rod 19
3 upper surface is equipped with location hole corresponding with locating rod 18, and the upper surface array distribution of case lid 2 has corresponding with locating rod 18
Location hole moving up and down for locating rod 18 can be driven by the flexible of electric telescopic rod 19, can will by locating rod 18
Rotor plate 3 is fixed on case lid 2, prevents rotor plate 3 from rotating at work, and the right surface of cabinet 1 is equipped with single-chip microcontroller
16, the input terminal of single-chip microcontroller 16 is electrically connected with the output end of external power supply, the output end and hydraulic pump 27, fan of single-chip microcontroller 16
21, motor 12 and the electrical connection of the input terminal of electric telescopic rod 19, single-chip microcontroller 16 control hydraulic pump 27, fan 21, motor 12 and electricity
Dynamic telescopic rod 19 is all made of common method in the prior art, and single-chip microcontroller 16 uses the M68HC12 model of motorola inc.
When in use: equipment being mounted on dust suppression vehicle by L-type mounting plate 15, external power supply is connected, passes through motor 12
Rotation, be able to drive rotation of the worm and gear 14 on positioning plate 13 by the rotation of worm and gear 14 and be able to drive first
The rotation of gear 11 can drive the rotation of connecting column 24 by the rotation of first gear 11, by the rotation of connecting column 24,
The rotation that second gear 23 can be driven can drive the rotation of rotor plate 3 by the rotation of second gear 23, pass through rotation
Plate 3 can drive the rotation of cannon spray head 5, and convenient for the revolution of dust-arrest device, by the flexible of electric telescopic rod 19, it is fixed to drive
Rotor plate 3, can be fixed on case lid 2 by moving up and down for position bar 18 by locating rod 18, convenient for fixed rotor plate 3, be prevented
Rotor plate 3 rotates at work.
The utility model sound construction, stablizes durable, by the rotation of motor 12, is able to drive worm and gear 14 and is positioning
Rotation on plate 13 is able to drive the rotation of first gear 11 by the rotation of worm and gear 14, and equipment can be made to carry out full side
Position rotation, improve the working efficiency of dust suppression vehicle, bring convenience to using, and can when turning an angle,
Spraying device is fixed in locating rod 18, improves safety in utilization.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (9)
1. a kind of automobile-used slewing equipment of dust suppression, including cabinet (1), it is characterised in that: the inside of the cabinet (1) is equipped with the first tooth
(11) and worm and gear (14) are taken turns, the inside upper surface of cabinet (1) is equipped with the second positioning ring (25), and under first gear (11)
Surface is equipped with the second locating slot corresponding with the second positioning ring (25), and the upper surface of worm and gear (14) is set there are two positioning plate
(13), and the both ends of worm and gear (14) are rotatablely connected by bearing and positioning plate (13), the positioning plate (13) positioned at left side
Left surface is equipped with motor (12), and the output shaft of motor (12) passes through positioning plate (13) and is fixedly connected with worm and gear (14), cabinet
(1) upper surface is equipped with case lid (2), and the upside of case lid (2) is equipped with rotor plate (3), and the lower surface of rotor plate (3), which is equipped with, places
The inside of slot, placing groove is equipped with second gear (23), and the upper surface of first gear (11) is equipped with connecting column (24), connecting column (24)
One end pass through case lid (2) and be fixedly connected with second gear (23), and connecting column (24) is connect by bearing with case lid (2), turn
The upper surface of movable plate (3) is set there are two the bracket (26) of correspondence setting, and bracket (26) passes through mounting plate (4) and rotor plate
(3) it is fixedly connected, bracket (26) is equipped with fixed disk (7) far from the one end of rotor plate (3), and the middle part of two brackets (26) is equipped with spray
The inside of mist cylinder (5), cannon spray head (5) is equipped with fan (21), and hydraulic telescopic rod is equipped between cannon spray head (5) and rotor plate (3)
(10), the both ends of hydraulic telescopic rod (10) pass through hinge (9) and are fixedly connected respectively with cannon spray head (5) and rotor plate (3), rotation
The upper surface of plate (3) is equipped with hydraulic pump (27) and hydraulic oil container (28), and the side surface of cannon spray head (5) is set there are two locating piece (6),
Two locating pieces (6) are symmetrical arranged, and locating piece (6) is rotatablely connected by shaft and fixed disk (7), positioned at the bracket of rear side
(26) rear surface is equipped with placement plate (20), and the lower surface of placement plate (20) is equipped with electric telescopic rod (19), electric telescopic rod
(19) locating rod (18) are equipped at telescopic end, the upper surface of rotor plate (3) is equipped with location hole corresponding with locating rod (18),
The upper surface array distribution of case lid (2) has location hole corresponding with locating rod (18), and the right surface of cabinet (1) is equipped with single-chip microcontroller
(16), the input terminal of single-chip microcontroller (16) is electrically connected with the output end of external power supply, the output end and hydraulic pump of single-chip microcontroller (16)
(27), the input terminal electrical connection of fan (21), motor (12) and electric telescopic rod (19).
2. the automobile-used slewing equipment of a kind of dust suppression according to claim 1, it is characterised in that: the front and back side of the cabinet (1)
Surface is equipped with L-type mounting plate (15), and the upper surface of L-type mounting plate (15) is equipped with stud.
3. the automobile-used slewing equipment of a kind of dust suppression according to claim 1, it is characterised in that: rotor plate (3) lower surface
Equipped with the first positioning ring (17), the upper surface of case lid (2) is equipped with the first locating slot corresponding with the first positioning ring (17).
4. the automobile-used slewing equipment of a kind of dust suppression according to claim 1, it is characterised in that: the right table of the cannon spray head (5)
Face is equipped with protective cover (22), and the protective cover (22) is fixedly connected by fixed bolt with cannon spray head (5).
5. the automobile-used slewing equipment of a kind of dust suppression according to claim 1, it is characterised in that: cannon spray head (5) left surface
Equipped with sprayer (8), the side surface of the sprayer (8) is equipped with water inlet pipe.
6. the automobile-used slewing equipment of a kind of dust suppression according to claim 1, it is characterised in that: it further include hydraulic oil container (28),
The hydraulic oil input terminal of the hydraulic pump (27) is connected by conduit with the hydraulic oil output end of hydraulic oil container (28), hydraulic pump
(27) hydraulic oil output end is connected by conduit with the hydraulic oil input terminal of hydraulic telescopic rod (10).
7. the automobile-used slewing equipment of a kind of dust suppression according to claim 1, it is characterised in that: the medial surface of the placing groove is set
There is gear grooved, the internal gear grooved of rotor plate (3) and second gear (23) are intermeshed.
8. the automobile-used slewing equipment of a kind of dust suppression according to claim 1, it is characterised in that: the side surface of the motor (12)
Equipped with mounting base, mounting base is fixedly connected by installation stud with the inside upper surface of cabinet (1).
9. the automobile-used slewing equipment of a kind of dust suppression according to claim 1, it is characterised in that: worm and gear (14) setting
In the front side of first gear (11), and worm and gear (14) and first gear (11) are intermeshed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821116663.XU CN208649973U (en) | 2018-07-16 | 2018-07-16 | A kind of automobile-used slewing equipment of dust suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821116663.XU CN208649973U (en) | 2018-07-16 | 2018-07-16 | A kind of automobile-used slewing equipment of dust suppression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208649973U true CN208649973U (en) | 2019-03-26 |
Family
ID=65784375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821116663.XU Expired - Fee Related CN208649973U (en) | 2018-07-16 | 2018-07-16 | A kind of automobile-used slewing equipment of dust suppression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208649973U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114644308A (en) * | 2020-12-21 | 2022-06-21 | 国网河南省电力公司内乡县供电公司 | Lifting mechanism and stringing device for power line repair |
| CN116335747A (en) * | 2023-05-30 | 2023-06-27 | 山西凌志达煤业有限公司 | Ventilating and dust removing device for coal mine tunneling surface |
-
2018
- 2018-07-16 CN CN201821116663.XU patent/CN208649973U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114644308A (en) * | 2020-12-21 | 2022-06-21 | 国网河南省电力公司内乡县供电公司 | Lifting mechanism and stringing device for power line repair |
| CN114644308B (en) * | 2020-12-21 | 2023-10-31 | 国网河南省电力公司内乡县供电公司 | Lifting mechanism and overhead line device for power rush-repair |
| CN116335747A (en) * | 2023-05-30 | 2023-06-27 | 山西凌志达煤业有限公司 | Ventilating and dust removing device for coal mine tunneling surface |
| CN116335747B (en) * | 2023-05-30 | 2023-09-15 | 山西凌志达煤业有限公司 | Ventilating and dust removing device for coal mine tunneling surface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190326 |