CN111379868A - Special novel airtight combination blast gate of subway - Google Patents
Special novel airtight combination blast gate of subway Download PDFInfo
- Publication number
- CN111379868A CN111379868A CN202010373276.XA CN202010373276A CN111379868A CN 111379868 A CN111379868 A CN 111379868A CN 202010373276 A CN202010373276 A CN 202010373276A CN 111379868 A CN111379868 A CN 111379868A
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- Prior art keywords
- transmission
- valve body
- subway
- pull rod
- unit valve
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/223—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves with a plurality of valve members
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/05—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention belongs to the technical field of subway and tunnel airtight combined air valves, and particularly relates to a novel airtight combined air valve special for a subway, which comprises a plurality of unit valve bodies, a transmission system and an actuating mechanism, wherein each unit valve body comprises a unit valve body frame body and a plurality of rotatable blades, the transmission system comprises a transmission connecting rod and a main transmission mechanism, the main transmission mechanism is in transmission connection with the actuating mechanism to realize power input, the transmission connecting rods are linked to realize synchronous rotation of the blades, the main transmission mechanism is externally arranged outside the valve body and comprises a plurality of transmission assemblies and a large pull rod, the transmission assemblies are in transmission connection through the large pull rod, and each unit valve body is correspondingly provided with one transmission assembly; the invention changes the transmission mode of the traditional closed combined air valve, the main transmission mechanism is arranged outside the valve body, the installation and debugging of a transmission system can be facilitated, the later maintenance and repair can be facilitated, and the invention is a very important breakthrough and change for the industry.
Description
Technical Field
The invention relates to the technical field of subway and tunnel airtight combined air valves, in particular to a novel airtight combined air valve for a subway and a tunnel.
Technical Field
The combined air valve is a large valve which is arranged on an air duct of a tunnel engineering smoke exhaust system, plays the roles of smoke exhaust, smoke isolation and fire resistance in case of fire, can bear the air pressure of 2000Pa piston air, and can meet the requirements of smoke leakage and fire resistance integrity within a certain time. The existing transmission system generally comprises a transmission main shaft, a transmission connecting rod and the like, wherein the transmission main shaft is in transmission connection with the execution mechanism to realize power input, the transmission main shaft is in transmission connection with the transmission connecting rod to drive the transmission connecting rod to act so as to realize blade linkage, and the transmission main shaft is in direct transmission connection with the transmission connecting rod, therefore, the existing transmission system is generally arranged in the frame body, so that a relatively large problem exists, because the transmission system is hidden in the frame body, great trouble and inconvenience are caused to the installation and debugging work, in addition, because the maintenance frequency of the combined air valve is high, the transmission component is hidden in the frame and is extremely not beneficial to the replacement and maintenance of the component, and therefore, how to research an external transmission system is a research and development direction of people all the time.
In addition, the underframe of the combined air valve is transported to a construction site after being welded and formed in a workshop at present, but the underframe is large in size, needs to be transported by a large-sized vehicle, is small in single transportation amount and high in transportation cost, and how to reduce the transportation cost is also considered.
Disclosure of Invention
The invention provides a novel airtight combined air valve special for subway, which can solve the problems pointed out in the background technology.
A novel airtight combined air valve special for a subway comprises a plurality of unit valve bodies, a transmission system and an actuating mechanism, wherein each unit valve body comprises a unit valve body frame body and a plurality of rotatable blades, each transmission system comprises a transmission connecting rod and a main transmission mechanism, each main transmission mechanism is in transmission connection with the corresponding actuating mechanism to realize power input, the transmission connecting rods are linked to realize synchronous rotation of the blades, the main transmission mechanism is externally arranged outside the valve body and comprises a plurality of transmission assemblies and a large pull rod, the transmission assemblies are in transmission connection through the large pull rod, each unit valve body is correspondingly provided with one transmission assembly, each transmission assembly comprises a fixed connecting piece, a rotating shaft and a small pull rod, the rotating shafts are in rotating connection with the fixed connecting pieces, the fixed connecting pieces are used for being fixed on the unit valve body frame bodies, and at least one end of each rotating shaft is provided with the small, one end of the small pull rod is connected with the rotating shaft, the other end of the small pull rod is connected to one blade of the unit valve body in a rotating mode, a swing arm is fixedly arranged on the rotating shaft, the swing arm of one set of transmission assembly is in transmission connection with the executing mechanism to achieve power input, the upper set of transmission assembly and the lower set of transmission assembly are in transmission connection through the large pull rod, and the upper end and the lower end of the large pull rod are respectively in rotation connection with the swing arms of the upper set of transmission.
Preferably, both ends of the rotating shaft are provided with small pull rods, and the small pull rods on both sides are respectively and rotatably connected to the blades of the left and right parallel unit valve bodies, so that the left and right parallel unit valve bodies share one set of transmission assembly.
Preferably, the head end of the small pull rod is rotatably connected to a pawl, and the pawl is fixed on one blade of the unit valve body.
Preferably, the actuating mechanism is in transmission connection with a swing arm of one set of transmission components through a rocker arm, one end of the rocker arm is rotatably connected to the output end of the actuating mechanism, and the other end of the rocker arm is rotatably connected to the swing arm.
Preferably, the supporting frames on two sides of the unit valve body frame body are provided with elastic pieces, the elastic pieces are buckled on the supporting frames, the contact surfaces of the elastic pieces and the blades are provided with elastic bulges on one sides of the blades, and the elastic pieces are provided with shaft holes.
Preferably, the elastic protrusion is an arc-shaped elastic protrusion.
Preferably, the elastic sheet is a stainless steel elastic sheet.
Preferably, the actuating mechanism is a manual and electric dual-purpose actuator.
Preferably, the steel plate frame further comprises a bottom frame, the bottom frame comprises a frame edge and a transverse beam, the frame edge is surrounded by a plurality of channel steel, a right-angle connecting piece is arranged at the joint of the channel steel, the lining of the right-angle connecting piece is arranged at the joint of the channel steel and fixed with the channel steel through a bolt, a process mounting hole is correspondingly formed in the channel steel, two ends of the transverse beam are respectively fixedly connected with the connecting piece, the connecting pieces at the two ends are respectively lined in the channel steel at the two sides and fixed with the channel steel through the bolt, and the connecting piece is correspondingly provided with the process mounting hole in the channel steel.
Preferably, the right-angle connecting piece is provided with a reinforcing angle.
The invention provides a special novel airtight combined air valve for a subway, which changes the transmission mode of the traditional airtight combined air valve, a main transmission mechanism is arranged outside a valve body, so that the installation and debugging of a transmission system can be facilitated, and the later maintenance and repair can be very facilitated; the executing mechanism drives the main transmission mechanism (namely, a transmission main shaft and the like) to act, the main transmission mechanism drives the transmission connecting rod to act, and the linkage of the blades is realized, and the transmission sequence of the invention is as follows: the actuating mechanism drives the main transmission mechanism to act, the main transmission mechanism drives the blade which is in transmission connection with the main transmission mechanism to act, and the transmission connecting rod acts under the transmission of the blade shaft, so that the linkage of the blades is realized.
The underframe adopts the connecting piece to pass through bolted connection, can assemble on-spot, and the workshop only needs the section bar that certain length and technology accord with technical requirement of processing, and direct transportation section bar can, no longer have processes such as welding, polishing, spraying, both saved the cost, raise the efficiency, improve production environment and accord with the requirement of present environmental protection policy again, but this structure is guaranteeing under the prerequisite of underframe intensity, greatly reduced cost of transportation, really two birds with one stone.
Drawings
Figure 1 is a schematic structural view of the present invention,
figure 2 is a schematic view of the main drive mechanism of the present invention,
figure 3 is a schematic view of the transmission assembly of the present invention,
FIG. 4 is a schematic diagram of the position of the spring plate according to the present invention,
FIG. 5 is a schematic view of the structure of the spring plate of the present invention,
figure 6 is a schematic view of the frame of the present invention,
figure 7 is a schematic view of a transverse beam of the present invention,
figure 8 is a schematic view of a right angle connector of the present invention,
figure 9 is a schematic view of a connector of the present invention,
description of reference numerals:
reference numbers in the figures: 1. an actuator; 2. a unit valve body frame; 3. a blade; 4. a main transmission mechanism; 5. a transmission connecting rod; 6. A large pull rod; 7. a transmission assembly; 71. fixing the connecting piece; 72. a rotating shaft; 73. a small pull rod; 74. a swing arm; 75. a pawl; 8. a rocker arm; 9. the supporting frame 10, the spring plate 11, the elastic bulge 12 and the shaft hole; 13. a bottom frame; 14. a frame edge; 15. a transverse beam; 16. a right angle connector; 17. mounting holes; 18. a connecting member; 19. the corner is reinforced.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.
Example 1:
as shown in fig. 1-3, 6 and 7, the novel airtight combined air valve special for a subway provided by the embodiment of the present invention includes a plurality of unit valve bodies, a transmission system and an actuating mechanism 1, wherein each unit valve body includes a unit valve body frame 2 and a plurality of rotatable blades 3, the transmission system includes a transmission connecting rod 5 and a main transmission mechanism 4, the main transmission mechanism 4 is in transmission connection with the actuating mechanism 1 to realize power input, the transmission connecting rod 5 is linked to realize synchronous rotation of the blades 3, the main transmission mechanism 4 is externally arranged outside the valve body and includes a plurality of transmission assemblies 7 and a large pull rod 6, the transmission assemblies 7 are directly linked through the large pull rod 6, each unit valve body is correspondingly provided with one transmission assembly 7, each transmission assembly 7 includes a fixed connecting member 71, a rotating shaft 72 and a small pull rod 73, the rotating shaft 72 is rotatably connected to the fixed connecting member 71, the fixed connecting piece 71 is used for being fixed on the unit valve body frame body 2, at least one end of the rotating shaft 72 is provided with a small pull rod 73, one end of the small pull rod 73 is connected with the rotating shaft 72, the other end of the small pull rod 73 is rotatably connected to one blade 3 in the unit valve body, the rotating shaft 72 is fixedly provided with a swing arm 74, and the rotating shaft 72 can rotate by driving the swing arm 74 to swing, so that the small pull rod 73 is pulled to act, and the blades are opened or closed;
the swing arm 74 of one set of transmission assembly 7 (preferably, the swing arm 74 of the lowermost transmission assembly 7) is in transmission connection with the execution mechanism 1 to realize power input, and the execution mechanism 1 may be a manual or electric dual-purpose actuator, specifically: the actuating mechanism 1 is in transmission connection with a swing arm 74 of one set of transmission components 7 through a rocker arm 8, one end of the rocker arm 8 is rotatably connected to the output end of the actuating mechanism 1, the other end of the rocker arm 8 is rotatably connected to the swing arm 74, the upper and lower sets of transmission components 7 are in transmission connection through the large pull rod 6, and the upper and lower ends of the large pull rod 6 are respectively rotatably connected to the swing arms 74 of the upper and lower sets of transmission components 7.
The two ends of the rotating shaft 72 are provided with small pull rods 73, and the small pull rods 73 on the two sides are respectively and rotatably connected to the blades 3 of the left and right parallel unit valve bodies, so that the left and right parallel unit valve bodies share one set of transmission assembly 7.
The head end of the small pull rod 73 is rotatably connected to a pawl 75, the pawl 75 is fixed on one blade 3 in the unit valve body, and the fixing stability and the transmission stability can be improved through the pawl 75.
The improved sealing structure of the valve body is characterized in that elastic pieces 10 are arranged on the supporting frames 9 on two sides of the unit valve body frame body 2, the elastic pieces 6 are buckled on the supporting frames 9, the contact surfaces of the elastic pieces 10 and the blades 3 are provided with elastic protrusions 11 towards one sides of the blades 3, the elastic pieces 10 are provided with shaft holes 12, the elastic protrusions 11 are arc-shaped elastic protrusions, the elastic pieces 10 are stainless steel elastic pieces, and the sealing performance of the valve body can be improved by arranging the stainless steel elastic pieces.
Example 2:
on the basis of the embodiment 1, the invention further comprises a bottom frame 13, the bottom frame 13 comprises a frame edge 14 and a transverse beam 15, the frame edge 14 is surrounded by a plurality of channel steels, a right-angle connecting piece 16 is arranged at the joint of the channel steels, namely, a right-angle connecting piece 16 is arranged at the joint of four corners, the right-angle connecting piece 16 is lined at the joint of the channel steels and is fixed with the channel steels through bolts, a process mounting hole 17 is correspondingly arranged on the right-angle connecting piece 16 and the channel steels, the transverse beam 15 is formed by two channel steels, connecting pieces 18 are respectively fixed at two ends of the channel steels, the connecting pieces 18 are angle steels, the angle steels at two ends are respectively lined in the channel steels at two sides and are fixed with the channel steels through bolts, the angle steels and the channel steels are correspondingly provided with process mounting holes 17, and by the structure, a workshop only needs to produce the section steels meeting the, the transportation cost can be greatly reduced, and the construction and construction are facilitated.
Preferably, the right-angle connector 16 is provided with a reinforcing angle 19, by which the strength is increased.
The working principle of the invention is as follows: the invention changes the transmission mode of the traditional closed combined air valve, the main transmission mechanism 4 is arranged outside the valve body, which is convenient for the installation and debugging of the transmission system and the later maintenance and repair, and is a very important breakthrough and change for the industry, and the transmission sequence of the main transmission mechanism 4 is correspondingly changed because the main transmission mechanism is arranged outside the valve body, and the transmission sequence of the invention is as follows: the actuating mechanism 1 drives the main transmission mechanism 4 to act, the main transmission mechanism 4 drives the blade 3 in transmission connection with the main transmission mechanism to act, and the transmission connecting rod 5 acts under the transmission of the blade shaft of the blade 3, so that the blade linkage is realized, and the method specifically comprises the following steps: the actuator 1 drives the swinging arm 74 of the lowest set of transmission component 7 to act through the rocker arm 8, the swinging arm 74 drives the rotating shaft 72 to rotate, the small pull rod 73 pulls one blade 3 which is in transmission connection with the swinging arm under the drive of the rotating shaft 72, the transmission connecting rod 5 acts under the drive of the blade shaft of the blade 3, the blade 3 of the unit valve body acts, meanwhile, the swinging arm 74 acts to drive the swinging arm 74 of the other set of transmission component 7 above the swinging arm to act, and the blades 3 of the unit valve body act through the transmission to realize the linkage of all the blades 3 in turn.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (10)
1. The utility model provides a special novel airtight combination blast gate of subway, includes a plurality of unit valve body, transmission system and actuating mechanism (1), the unit valve body includes rotatable blade (3) of unit valve body framework (2) and a plurality of, and transmission system includes drive connecting rod (5) and main drive mechanism (4), main drive mechanism (4) are connected with actuating mechanism (1) transmission, realize power input, drive connecting rod (5) linkage realizes the synchronous rotation of blade (3), its characterized in that: the main transmission mechanism (4) is externally arranged outside the valve body and comprises a plurality of transmission assemblies (7) and a large pull rod (6), the transmission assemblies (7) are in transmission connection through the large pull rod (6), each unit valve body is correspondingly provided with one transmission assembly (7), each transmission assembly (7) comprises a fixed connecting piece (71), a rotating shaft (72) and a small pull rod (73), the rotating shaft (72) is rotatably connected onto the fixed connecting piece (71), the fixed connecting piece (71) is used for being fixed onto the unit valve body frame body (2), at least one end of the rotating shaft (72) is provided with the small pull rod (73), one end of the small pull rod (73) is connected with the rotating shaft (72), the other end of the small pull rod is rotatably connected onto one blade (3) of the unit valve body, a swing arm (74) is fixedly arranged on the rotating shaft (72), and the swing arm (74) of one set of the transmission assemblies (7) is in transmission connection with the execution mechanism (1), the power input is realized, the upper and lower sets of transmission components (7) are in transmission connection through the large pull rod (6), and the upper and lower ends of the large pull rod (6) are respectively in rotary connection with the swing arms (74) of the upper and lower sets of transmission components (7).
2. The special novel airtight combination blast gate of subway of claim 1, characterized in that: the two ends of the rotating shaft (72) are respectively provided with a small pull rod (73), and the small pull rods (73) on the two sides are respectively and rotatably connected to the blades (3) of the left and right parallel unit valve bodies, so that the left and right parallel unit valve bodies share one set of transmission assembly (7).
3. The special novel airtight combination blast gate of subway of claim 2, characterized in that: the head end of the small pull rod (73) is rotatably connected to a pawl (75), and the pawl (75) is fixed on one blade (3) in the unit valve body.
4. The special novel airtight combination blast gate of subway of claim 1, characterized in that: the actuating mechanism (1) is in transmission connection with a swing arm (74) of one set of transmission assembly (7) through a swing arm (8), one end of the swing arm (8) is rotatably connected to the output end of the actuating mechanism (1), and the other end of the swing arm (8) is rotatably connected to the swing arm (74).
5. The special novel airtight combination blast gate of subway of claim 1, characterized in that: the unit valve body is characterized in that elastic pieces (10) are arranged on the supporting frames (9) on the two sides of the unit valve body frame body (2), the elastic pieces (6) are buckled on the supporting frames (9), contact surfaces of the elastic pieces (10) and the blades (3) are provided with elastic protrusions (11) on one sides of the blades (3), and the elastic pieces (10) are provided with shaft holes (12).
6. The special novel airtight combination blast gate of subway of claim 5, characterized in that: the elastic bulge (11) is an arc-shaped elastic bulge.
7. The special novel airtight combination blast gate of subway of claim 6, characterized in that: the elastic sheet (10) is a stainless steel elastic sheet.
8. The novel airtight combined air valve special for the subway according to any one of claims 1-7, wherein: the actuating mechanism (1) is a manual and electric dual-purpose actuator.
9. The novel airtight combined air valve special for the subway according to any one of claims 1-7, wherein: the steel plate frame is characterized by further comprising a bottom frame (13), the bottom frame (13) comprises a frame edge (14) and transverse beams (15), the frame edge (14) is formed by surrounding through a plurality of steel channels, right-angle connectors (16) are arranged at the joints of the steel channels, the right-angle connectors (16) are lined at the joints of the steel channels and fixed with the steel channels through bolts, process mounting holes (17) are correspondingly formed in the steel channels, two ends of each transverse beam (15) are respectively fixedly connected with connectors (18), two ends of each transverse beam (15) are respectively lined in the steel channels on two sides, the transverse beams are fixed with the steel channels through bolts, and the connectors (18) are correspondingly provided with the process mounting holes (17) in the steel channels.
10. The special novel airtight combination blast gate in subway of claim 9, characterized in that: and a reinforcing angle (19) is arranged on the right-angle connecting piece (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373276.XA CN111379868A (en) | 2020-05-06 | 2020-05-06 | Special novel airtight combination blast gate of subway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373276.XA CN111379868A (en) | 2020-05-06 | 2020-05-06 | Special novel airtight combination blast gate of subway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111379868A true CN111379868A (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010373276.XA Pending CN111379868A (en) | 2020-05-06 | 2020-05-06 | Special novel airtight combination blast gate of subway |
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| Country | Link |
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| CN (1) | CN111379868A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606349A (en) * | 2021-08-10 | 2021-11-05 | 江苏长虹智能装备股份有限公司 | Shunting blast gate |
| CN117515174A (en) * | 2023-12-29 | 2024-02-06 | 山东金光集团有限公司 | Special airtight combination blast gate of subway |
-
2020
- 2020-05-06 CN CN202010373276.XA patent/CN111379868A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606349A (en) * | 2021-08-10 | 2021-11-05 | 江苏长虹智能装备股份有限公司 | Shunting blast gate |
| CN117515174A (en) * | 2023-12-29 | 2024-02-06 | 山东金光集团有限公司 | Special airtight combination blast gate of subway |
| CN117515174B (en) * | 2023-12-29 | 2024-03-26 | 山东金光集团有限公司 | Special airtight combination blast gate of subway |
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