CN112356863A - Sand-proof ventilation device for train - Google Patents
Sand-proof ventilation device for train Download PDFInfo
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- CN112356863A CN112356863A CN202011203381.5A CN202011203381A CN112356863A CN 112356863 A CN112356863 A CN 112356863A CN 202011203381 A CN202011203381 A CN 202011203381A CN 112356863 A CN112356863 A CN 112356863A
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- box
- air
- fixedly connected
- pipe
- fan wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D27/00—Heating, cooling, ventilating, or air-conditioning
- B61D27/009—Means for ventilating only
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- Separating Particles In Gases By Inertia (AREA)
Abstract
The invention provides a wind and sand prevention ventilation device for a train, which comprises a box body and an air conditioning unit, wherein the air conditioning unit is fixedly arranged at the center of the bottom in the box body, a partition plate II is transversely and fixedly connected to the upper end of the air conditioning unit in the box body, an air inlet pipe is transversely and fixedly arranged at the upper end of the partition plate II in the box body, the air inlet pipe is fixedly connected with an air supply outlet of the air conditioning unit, an air supply pipe assembly is fixedly arranged at the lower end of a water tank at the bottom of the box body, a sewer pipe is fixedly arranged between the water tank and the air supply pipe assembly, an air return pipe assembly is vertically and fixedly arranged at one side of the partition plate I far away from the air conditioning unit in the box body, dustproof caps are movably arranged at the bottom of the air return pipe assembly, water presses are fixedly arranged at the front side and the rear side of the air return The effect is poor.
Description
Technical Field
The invention relates to the technical field of train ventilation equipment, in particular to a wind and sand prevention ventilation device for a train.
Background
At present, a railway train is a vehicle frequently selected for daily travel of people, the railway train is generally provided with a plurality of connected carriages, the carriages are closed spaces, air conditioning units are arranged at the tops or the bottoms of the carriages, and air in the carriages is exchanged with the outside through the air conditioning units so as to ensure the air quality in the carriages.
In areas with more sand and dust, the sand and dust easily enters a carriage through air exchange, the currently used air filter screen or filter element has defects, the sand and dust is easily blocked to cause the failure of the filter equipment, particularly, the air exchange equipment is installed at the bottom of a train, and an exhaust pipe also easily enters the sand and dust in the non-operation process of an air conditioning unit, so that the problem is solved by providing the sand and dust prevention ventilation device for the train.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a wind and sand prevention ventilation device for a train, which solves the above problems described in the background art.
The invention relates to a wind and sand prevention ventilation device for a train, which is realized by the following specific technical means: a wind and sand prevention ventilating device for a train comprises a box body and an air conditioning unit, wherein the air conditioning unit is fixedly arranged at the center of the bottom in the box body, a partition plate II is transversely and fixedly connected to the upper end of the air conditioning unit in the box body, an air inlet pipe is transversely and fixedly arranged at the upper end of the partition plate II in the box body, the air inlet pipe is fixedly connected with an air supply outlet of the air conditioning unit, water tanks are fixedly arranged at the bottoms of the partition plate II and on the left side and the right side of the air conditioning unit respectively, a partition plate I is vertically and fixedly connected to the outer side of the water tank in the box body, an air supply pipe assembly is fixedly arranged at the lower end of the water tank at the bottom of the box body, a sewer pipe is fixedly arranged between the water tank and the air supply pipe assembly, an air return, a return pipe is fixedly connected between the water feeding pipe of the water pressing device and the air supply pipe assembly.
Preferably, the blast pipe assembly comprises a blast pipe, an air guide box, a spraying box, a connecting box, a separating box and a water storage box, the central position of the upper end of the blast pipe is fixedly connected with an arc-shaped air guide box, a fan wheel I is transversely and rotatably connected between the left side and the right side of the lower end inside the air guide box, the left end and the right end of the central shaft of the fan wheel I extend to the outer side of the air guide box and are fixedly connected with a cam II, the outer side of the cam II is provided with an annular groove, the top of the air guide box is fixedly connected with the spraying box, the central position of the top of the spraying box is provided with an air inlet, the bottom of the blast pipe is fixedly connected with the quadrangular connecting box, the central position of the bottom of the connecting box is fixedly connected with the separating box, the left side and the right side of the central position inside the separating box are rotatably connected with, the return pipe is fixedly connected between the water storage box and the upper water pipe of the water pressing device.
Preferably, the front side and the rear side of the blast pipe are respectively provided with an air inlet, the left side and the right side of the air inlet are respectively fixedly connected with a barrier strip, and the upper end of the air inlet is positioned at the rear side of the barrier strip and is hinged with a vertical rotating barrier strip.
Preferably, the top is located the equal vertical fixedly connected with cylinder body in the air inlet left and right sides in the box that sprays, and sliding connection has the piston in the cylinder body, and the piston rod bottom extends to the box bottom outside and cam outside annular groove sliding connection, downcomer and cylinder body intercommunication, cylinder body are close to air inlet one side center fixedly connected with spray tube.
Preferably, the separation box is hollow cylinder, and the upper and lower end of separation box is equipped with feed inlet, discharge gate respectively, and the equal fixedly connected with filter screen of separation box front and back side, water storage box and separation box front and back side filter screen department welded fastening.
Preferably, the front end and the rear end of the left side and the rear end of the right side of the fan blades of the first fan wheel and the second fan wheel are respectively provided with a sliding groove, the cleaning piece is connected between the sliding grooves on the same side in a sliding manner, the top of the cleaning piece is a cambered surface, the bottom of the cleaning piece is connected with the fan blades in an attaching manner, the fan blades of the first fan wheel are connected with the inner wall of the air guide box, and the fan blades.
Preferably, the return air pipe assembly comprises a return air pipe, a supporting pipe and an exhaust pipe, the central positions of the upper end and the lower end of the supporting pipe are respectively vertically and fixedly connected with the return air pipe and the exhaust pipe, the central positions of the front side and the rear side of the inner part of the supporting pipe are respectively vertically and fixedly connected with a third partition plate, the central positions of the three partition plates are rotatably connected with a third fan wheel, the front end and the rear end of a central shaft of the third fan wheel all extend to a first cam fixedly connected with the three outer sides of the partition plates, an annular groove is formed in the outer side of the first.
Preferably, the dustproof cap is hollow round platform form, and dustproof cap bottom outside fixedly connected with brim of a hat, the equal vertical fixedly connected with montant of side central point position around the brim of a hat top, the montant is vertical runs through the bottom half, and the montant top is located the internal fixedly connected with limiting plate of box, and the montant upper end is located and has cup jointed reset spring in the box.
Has the advantages that:
1. the front and the back of the blast pipe are respectively provided with an air inlet, the air inlet on one side which is the same with the running direction of the train can be pushed inwards by wind power to move the baffle plate no matter the train runs forwards or backwards, and the baffle plate on the air inlet on the other side is attached to the baffle strip by the wind power, so that the fan wheel I rotates by the wind power, and the train can well ventilate when running forwards or backwards.
2. The wind power drives the first fan wheel to rotate, the outside air is upwards guided into the spraying box through the first fan wheel, the first fan wheel drives the second cam to rotate in the rotating process, so that the piston circularly moves up and down in the cylinder body, water in the sewer pipe enters the cylinder body under the influence of pressure, and is sprayed to the first fan wheel through the spray pipe, and the effects of dust fall and sand prevention are achieved.
3. The first fan wheel drives the second fan wheel to rotate in the rotating process, the second fan wheel drives moisture and dust to rotate, the moisture firstly permeates into the water storage box through the filter screen when falling into the separation box, the fan blades of the second fan wheel drive the dust to be discharged through the discharge port in the rotating process, and the fan blades are connected with the inner wall of the separation box, so that the dust attached to the inner wall can be scraped off in the rotating process, and the waste water in the water storage box can be recycled.
4. The cleaning piece slides up and down in the rotation process of the first fan wheel and the second fan wheel, and the fan blades are cleaned in the sliding process.
5. The interior wind of blast pipe is toward arranging outward, drives three rotations of fan wheel to make a cam rotation circulation top move the extrusion stem, the extrusion stem then extrudees the squeezer, thereby with the leading-in water tank of the water absorption in the water storage box, make waste water reuse, the blast pipe blows the dust cap down and removes toward arranging outward when wind, the air escape, when not airing exhaust, then the dust cap passes through reset spring block all the time in the blast pipe, prevent that the sand and dust from passing through in the blast pipe gets into the carriage.
Drawings
FIG. 1 is a schematic sectional view of the case according to the present invention.
Fig. 2 is a schematic view of the structure of the blower tube assembly of the present invention.
FIG. 3 is a side sectional view of the blower tube assembly of the present invention.
Fig. 4 is a schematic side sectional view of the air return pipe assembly of the present invention.
FIG. 5 is a schematic diagram of a side view of the separation box of the present invention.
FIG. 6 is an enlarged view of the structure at A of FIG. 5 according to the present invention.
In fig. 1 to 6, the correspondence between the component names and the reference numbers is:
the air conditioner comprises a box body 1, an air conditioning unit 101, an air supply pipe assembly 2, an air supply pipe 201, an air guide box 202, a spraying box 203, a connecting box 204, a separating box 205, a water storage box 206, a first partition plate 3, an air return pipe assembly 4, an air return pipe 41, a support pipe 42, an exhaust pipe 43, an air supply pipe 5, a water tank 6, a second partition plate 7, a water squeezer 8, an extrusion rod 9, a first cam 10, a third partition plate 11, a sewer pipe 12, a return pipe 13, an air inlet 14, a second cam 15, a piston 151, an air inlet 16, a barrier strip 17, a barrier strip 18, a cylinder body 19, a first fan wheel 20, a connecting pipe 21, a second fan wheel 22, a sliding groove 221, a third fan wheel 23, a dustproof cap 24, a cap brim 241, a vertical rod 242, a limiting.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Example (b):
as shown in figures 1 to 6: a wind and sand prevention ventilation device for a train comprises a box body 1 and an air conditioning unit 101, wherein the air conditioning unit 101 is fixedly installed at the center of the bottom in the box body 1, a partition plate II 7 is transversely and fixedly connected to the upper end of the air conditioning unit 101 in the box body 1, an air inlet pipe 5 is transversely and fixedly installed at the upper end of the partition plate II 7 in the box body 1, the air inlet pipe 5 is fixedly connected with an air supply outlet of the air conditioning unit 101, water tanks 6 are fixedly installed at the left side and the right side of the air conditioning unit 101 at the bottom of the partition plate II 7, a partition plate I3 is vertically and fixedly connected to the outer side of the water tank 6 in the box body 1, an air supply pipe assembly 2 is fixedly installed at the lower end of the water tank 6 in the bottom of the box body 1, a sewer pipe 12 is fixedly installed between the water tank 6 and the air supply pipe assembly, the water pressing device 8 is fixedly mounted inside the box body 1 and positioned on the front side and the rear side of the return air pipe assembly 4, one end of a water outlet pipe of the water pressing device 8 is fixedly connected with the water tank 6, and a return pipe 13 is fixedly connected between a water feeding pipe of the water pressing device 8 and the air supply pipe assembly 2.
Wherein: the blast pipe component 2 comprises a blast pipe 201, an arc-shaped air guide box 202, a spraying box 203, a connecting box 204, a separating box 205 and a water storage box 206, the central position of the upper end of the blast pipe 201 is fixedly connected with the arc-shaped air guide box 202, the left side and the right side of the lower end in the air guide box 202 are transversely and rotatably connected with a fan wheel I20, the left end and the right end of the central shaft of the fan wheel I20 extend to the outer side of the air guide box 202 and are fixedly connected with a cam II 15, the outer side of the cam II 15 is provided with an annular groove, the top of the air guide box 202 is fixedly connected with the spraying box 203, the central position of the top of the spraying box 203 is provided with an air inlet 14, the bottom of the blast pipe 201 is fixedly connected with the quadrangular connecting box 204, the central position of the bottom of the connecting box 204 is fixedly connected with the separating box 205, the left side and, the central shaft of the first fan wheel 20 is connected with the central shaft of the second fan wheel 22 through a synchronous belt synchronous wheel, and the return pipe 13 is fixedly connected between the water storage box 206 and the water feeding pipe of the water pressing device 8.
Wherein: the front side and the rear side of the blast pipe 201 are provided with air inlets 16, the left side and the right side of each air inlet 16 are fixedly connected with barrier strips 17, the upper end of each air inlet 16 is positioned at the rear side of each barrier strip 17 and is hinged with a vertically rotating barrier strip 18, in the forward and reverse implementation process of a train, air enters the air inlet 16 at one side in the same direction as the running direction of the train, the barrier strips 18 are pushed by wind power to be opened, the barrier strips 18 at the other side are pushed by the wind power to be attached to the barrier strips 17, and a fan wheel 20 is.
Wherein: the top is located the equal vertical fixedly connected with cylinder 19 in the air inlet 14 left and right sides in the box 203 that sprays, sliding connection has piston 151 in cylinder 19, piston rod 151 bottom extends to and sprays the box 203 bottom outside and the annular groove sliding connection in the second 15 outsides of cam, downcomer 12 communicates with cylinder 19, cylinder 19 is close to the central fixedly connected with spray tube in air inlet 14 one side, fan wheel 20 rotates in-process and drives the second 15 rotations of cam, thereby make piston 151 circulate up-and-down motion in cylinder 19, the water in the downcomer 12 is influenced by pressure then gets into cylinder 19, spray to fan wheel 15 through the spray tube, thereby reach the effect of dust fall sand control.
Wherein: the separation box 205 is hollow cylinder, the upper end and the lower end of the separation box 205 are respectively provided with a feed inlet 25 and a discharge outlet 27, the front side and the rear side of the separation box 205 are fixedly connected with filter screens 26, the water storage box 206 and the filter screens 26 at the front side and the rear side of the separation box 205 are welded and fixed, the first fan wheel 20 drives the second fan wheel 22 to rotate in the rotation process, the second fan wheel 22 drives water and dust to rotate, when the water falls into the separation box 205, the water firstly permeates into the water storage box 206 through the filter screens 26, and the fan blades of the second fan wheel 22 drive the dust to be discharged through the discharge outlet 27 in the rotation process, and meanwhile, the fan blades are connected with the inner wall of the separation box 205, so that the dust attached to the inner wall can be scraped off.
Wherein: the front end and the rear end of the left side and the rear end of the right side of the fan blades of the first fan wheel 20 and the second fan wheel 22 are respectively provided with a sliding groove 221, a cleaning piece 28 is connected between the sliding grooves 221 on the same side in a sliding mode, the top of the cleaning piece 28 is an arc surface, the bottom of the cleaning piece is connected with the fan blades in an attaching mode, the fan blades of the first fan wheel 20 are connected with the inner wall of the air guide box 202, the fan blades of the second fan wheel 22 are connected with the inner wall of the separation box 205, the cleaning piece 28 slides up and down in the rotating.
Wherein: return air duct subassembly 4 is including return air duct 41, stay tube 42, exhaust pipe 43, stay tube 42 upper and lower end central point puts vertical fixedly connected with return air duct 41 respectively, exhaust pipe 43, stay tube 42 inside central point puts the equal vertical fixedly connected with baffle three 11 of front and back side, central point puts to rotate between three 11 baffles and is connected with fan wheel three 23, fan wheel three 23 center pin front and back end all extends to three 11 outside fixedly connected with cams of baffle 10, a 10 outsides of cams are equipped with the annular groove, the bottom of extrusion stem 9 extends to in the stay tube 42 with a 10 outside annular groove sliding connection of cam.
Wherein: dustproof cap 24 is hollow round platform form, dustproof cap 24 bottom outside fixedly connected with brim of a hat 241, the equal vertical fixedly connected with montant 242 in side central point position around the brim of a hat 241 top, montant 242 vertically runs through the box 1 bottom, montant 242 top is located box 1 internal fixedly connected with limiting plate 243, montant 242 upper end is located box 1 internal cup jointed reset spring, wind in exhaust pipe 43 is toward arranging outward, drive three 23 rotations of fan wheel, thereby make a cam 10 rotation cycle top move the extrusion stem 9, extrusion stem 9 then extrudees squeezer 8, thereby inhale the leading-in water tank 6 of the water in the water storage box 206, make waste water reuse, blow dustproof cap 24 down when exhausting outward by the exhaust pipe, when not exhausting, then dustproof cap 24 passes through reset spring and block all the time in exhaust pipe 43, prevent that sand and dust from getting into in the carriage through exhaust pipe 43.
The working principle is as follows: the box body 1 is arranged at the bottom of a train, the air inlet pipe 5 and the return air pipe 41 are respectively connected with an air inlet and an air outlet pipe in a carriage, in the running process of the train, the air conditioning unit 101 is opened, the air supply pipe 201 supplies air to the air inlet 16 in the same direction as the running direction of the train to lift the baffle plate 18, the fan wheel 20 is blown by external wind power to rotate, air is guided into the spraying box 203 by the rotation of the fan wheel 20, meanwhile, the cam wheel 15 is driven to rotate in the rotating process of the fan wheel 20, the cam wheel 15 circularly pushes the pulling piston 151, water in the water tank 6 enters the cylinder body 19 through the sewer pipe 12 and is sprayed down to the fan wheel 20 through the spray pipe, so that dust and sand in the air enters the separating box through the feed inlet 25, the air enters the box body 1 and is conveyed into the carriage through the air inlet pipe 5 through the air conditioning unit 101, the fan wheel 22 is driven to rotate in the rotating process of the fan wheel 20, the fan, the blades are cleaned in the sliding process to prevent dust adhesion, the rotation of the second fan wheel 22 drives water and sand to rotate, when the water falls into the separation box 205, the water firstly permeates into the water storage box 206 through the filter screen 26, and when the blades of the second fan wheel 22 rotate, the sand is driven to be discharged through the discharge port 27, meanwhile, the blades are connected with the inner wall of the separation box 205, so that the sand attached to the inner wall can be scraped off in the rotating process, air in a carriage is blown into the support pipe 42 through the air return pipe 41, the blades of the third fan wheel 23 are driven to rotate through the support pipe 42, so that the first cam 10 rotates to circularly push the extrusion rod 9, the extrusion rod 9 extrudes the water press 8, so that the water in the water storage box 206 is sucked into the water tank 6, the waste water is recycled, when the exhaust pipe 403 exhausts the dust cap is blown to move downwards, when the exhaust is not exhausted, the dust cap 24 is clamped in the exhaust pipe 43 through the reset spring all the, preventing the dust from entering the cabin through the exhaust duct 43.
Claims (8)
1. The utility model provides a train is with preventing wind husky ventilation unit, includes box (1), air conditioning unit (101), its characterized in that: an air conditioning unit (101) is fixedly installed at the center of the bottom in the box body (1), a second partition plate (7) is transversely and fixedly connected to the upper end of the air conditioning unit (101) in the box body (1), an air inlet pipe (5) is transversely and fixedly installed at the upper end of the second partition plate (7) in the box body (1), the air inlet pipe (5) is fixedly connected with an air supply outlet of the air conditioning unit (101), water tanks (6) are fixedly installed at the left side and the right side of the air conditioning unit (101) at the bottoms of the second partition plates (7), partition plates (3) are vertically and fixedly connected to the outer sides of the water tanks (6) in the box body (1), an air supply pipe assembly (2) is fixedly installed at the lower end of the water tank (6) at the bottom of the box body (1), a sewer pipe (12) is fixedly installed between the water tank (6) and the air supply pipe assembly (2), and an air return pipe assembly (4), the utility model discloses a wind power generation device, including box (1), return air pipe assembly (4), the equal movable mounting in return air pipe assembly (4) bottom has dust cap (24), the equal fixed mounting in side has water pressing device (8) around inside being located return air pipe assembly (4) of box (1), water pressing device (8) outlet pipe one end and water tank (6) fixed connection, fixedly connected with back flow (13) between water pressing device (8) upper hose and air supply pipe assembly (2).
2. The sand-proof ventilation device for a train according to claim 1, wherein: the air supply pipe assembly (2) comprises an air supply pipe (201), an air guide box (202), a spraying box (203), a connecting box (204), a separating box (205) and a water storage box (206), wherein the center position of the upper end of the air supply pipe (201) is fixedly connected with the arc-shaped air guide box (202), a fan wheel I (20) is transversely connected between the left side and the right side of the lower end in the air guide box (202) in a rotating manner, the left end and the right end of a central shaft of the fan wheel I (20) both extend to the outer side of the air guide box (202) to be fixedly connected with a cam II (15), the outer side of the cam II (15) is provided with an annular groove, the top of the air guide box (202) is fixedly connected with the spraying box (203), the center position of the top of the spraying box (203) is provided with an air inlet (14), the bottom of the air supply pipe (201) is fixedly, the utility model discloses a separation box, including separation box (205), fan wheel two (22) rotate between the central point puts the left and right sides, the equal fixedly connected with water storage box (206) in both sides around separation box (205), fixedly connected with connecting pipe (21) between water storage box (206) lower extreme, fan wheel one (20) center pin passes through the hold-in range synchronizing wheel with fan wheel two (22) center pin and is connected, back flow (13) fixed connection is between water storage box (206) and squeezer (8) upper hose.
3. The sand-proof ventilation device for a train according to claim 2, wherein: air inlets (16) are formed in the front side and the rear side of the air supply pipe (201), barrier strips (17) are fixedly connected to the left side and the right side of each air inlet (16), and a blocking piece (18) which can rotate vertically is hinged to the upper end of each air inlet (16) and is located on the rear side of each barrier strip (17).
4. The sand-proof ventilation device for a train according to claim 2, wherein: the spray box is characterized in that a cylinder body (19) is fixedly connected to the left side and the right side of the air inlet (14) at the top in the spray box (203), a piston (151) is connected to the cylinder body (19) in a sliding mode, the bottom of the piston rod (151) extends to the outer side of the bottom of the spray box (203) and is connected with an annular groove in the outer side of the second cam (15) in a sliding mode, the sewer pipe (12) is communicated with the cylinder body (19), and a spray pipe is fixedly connected to the center of one side, close to the air.
5. The sand-proof ventilation device for a train according to claim 2, wherein: the separation box (205) is hollow cylinder, the upper and lower end of separation box (205) is equipped with feed inlet (25), discharge gate (27) respectively, the equal fixedly connected with filter screen (26) of side around separation box (205), side filter screen (26) department welded fastening around water storage box (206) and separation box (205).
6. The sand-proof ventilation device for a train according to claim 2, wherein: the fan wheel is characterized in that sliding grooves (221) are formed in the front end and the rear end of the left side and the rear end of the right side of each of fan blades of the fan wheel I (20) and the fan wheel II (22), a cleaning piece (28) is connected between the sliding grooves (221) on the same side in a sliding mode, the top of the cleaning piece (28) is an arc surface, the bottom of the cleaning piece is connected with the fan blades in an attaching mode, the fan blades of the fan wheel I (20) are connected with the inner wall of the air guide box (202), and the fan blades.
7. The sand-proof ventilation device for a train according to claim 1, wherein: return air pipe subassembly (4) are including return air pipe (41), stay tube (42), exhaust pipe (43), the lower extreme central point puts vertical fixedly connected with return air pipe (41), exhaust pipe (43) respectively about stay tube (42), the equal vertical fixedly connected with baffle three (11) of side around stay tube (42) inside central point puts, central point puts to rotate between three (11) of baffle and is connected with fan wheel three (23), fan wheel three (23) center pin front and back end all extends to baffle three (11) outside fixedly connected with cam (10), the cam (10) outside is equipped with the annular groove, extrusion stem (9) bottom extend to stay tube (42) in with cam (10) outside annular groove sliding connection.
8. The sand-proof ventilation device for a train according to claim 1, wherein: dustproof cap (24) are hollow round platform form, dustproof cap (24) bottom outside fixedly connected with brim of a hat (241), the equal vertical fixedly connected with montant (242) of side central point position around brim of a hat (241) top, montant (242) are vertical to be run through box (1) bottom, montant (242) top is located box (1) internal fixation and is connected with limiting plate (243), it has reset spring to cup joint in box (1) to be located montant (242) upper end.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202011203381.5A CN112356863A (en) | 2020-11-02 | 2020-11-02 | Sand-proof ventilation device for train |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202011203381.5A CN112356863A (en) | 2020-11-02 | 2020-11-02 | Sand-proof ventilation device for train |
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CN112356863A true CN112356863A (en) | 2021-02-12 |
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ID=74513263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202011203381.5A Withdrawn CN112356863A (en) | 2020-11-02 | 2020-11-02 | Sand-proof ventilation device for train |
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CN (1) | CN112356863A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN118220239A (en) * | 2024-05-09 | 2024-06-21 | 青岛地铁集团有限公司 | Rail transit vehicle traction device and use method thereof |
-
2020
- 2020-11-02 CN CN202011203381.5A patent/CN112356863A/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN118220239A (en) * | 2024-05-09 | 2024-06-21 | 青岛地铁集团有限公司 | Rail transit vehicle traction device and use method thereof |
CN118220239B (en) * | 2024-05-09 | 2024-09-17 | 青岛地铁集团有限公司 | Rail transit vehicle traction device and use method thereof |
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Application publication date: 20210212 |