CN214728803U - Ventilation and smoke exhaust device of subway internal combustion engineering vehicle - Google Patents

Ventilation and smoke exhaust device of subway internal combustion engineering vehicle Download PDF

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Publication number
CN214728803U
CN214728803U CN202120585892.1U CN202120585892U CN214728803U CN 214728803 U CN214728803 U CN 214728803U CN 202120585892 U CN202120585892 U CN 202120585892U CN 214728803 U CN214728803 U CN 214728803U
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China
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rod
fixedly connected
circulation shell
shell
internal combustion
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Expired - Fee Related
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CN202120585892.1U
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Chinese (zh)
Inventor
付涛
张玉博
鲁志昂
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Individual
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Individual
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Abstract

The utility model relates to a subway internal combustion machineshop car technical field specifically is a ventilation fume extractor of subway internal combustion machineshop car, including fan main part subassembly, fan main part subassembly includes the circulation shell, first motor is installed to the one end of circulation shell, the inside of dwang is provided with the motion pole, the one end of second axostylus axostyle is connected through the bevel gear transmission with one side on screw rod surface, one side fixedly connected with filter mechanism subassembly of circulation shell. The utility model discloses a fan main part subassembly, the device can be adjusted the fixed angle of flabellum fast, and the realization that can be good is under the condition of flabellum rotation, adjusts the flabellum interval of its angle to the output of the amount of wind efficiency of change traditional axial fan that can be good, through the filtering mechanism subassembly, the device is when constantly carrying the air, and the filter screen can be good will carry the granule impurity in the air of air to filter and clear away, simultaneously convenience of customers's dismantlement.

Description

Ventilation and smoke exhaust device of subway internal combustion engineering vehicle
Technical Field
The utility model relates to a subway internal combustion machineshop car technical field specifically is a ventilation fume extractor of subway internal combustion machineshop car.
Background
In the running process of urban rails, a subway internal combustion engineering truck is often used for special operations such as dispatching of subway locomotives and emergency maintenance of locomotives, because the subway engineering truck is operated, the interior of a carriage is mostly sealed, and a series of ventilation and smoke exhaust devices are usually installed at the top of the carriage in order to ensure the air flow in the carriage, taking the existing axial flow fan ventilation devices which are mostly used as examples;
traditional axial-flow fan structure is many comparatively simple and easy, and the flabellum is many with motor shaft fixed connection, therefore the angle of flabellum is fixed more for when the fan was opened, lead to the fan to be many comparatively fixed to the output flow of air, can't realize quick adjustment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ventilation fume extractor of subway internal combustion machineshop car to solve the traditional axial-flow fan structure that proposes in the above-mentioned background art many comparatively simple and easy, the flabellum many with motor shaft fixed connection, therefore the angle of flabellum is fixed more, when making the fan open, lead to the fan to the output flow of air many comparatively fixed, can't realize quick adjustment's problem.
In order to achieve the above object, the utility model provides a following technical scheme: a ventilation and smoke exhaust device of a metro internal combustion engineering vehicle comprises a fan main body assembly, wherein the fan main body assembly comprises a circulation shell, a first motor is installed at one end of the circulation shell, a first shaft rod is fixedly connected to the output end of the first motor, one end of the first shaft rod penetrates through the circulation shell and extends to the inside of the circulation shell, one end of the surface of the first shaft rod is connected with the inner wall of the circulation shell through a bearing frame, a fixing sleeve piece is arranged inside the circulation shell, two ends of the fixing sleeve piece are fixedly connected with the inner wall of the circulation shell, a rotating rod is arranged inside the fixing sleeve piece, two sides of the rotating rod penetrate through the fixing sleeve piece and extend to the outer side of the fixing sleeve piece, a motion rod is arranged inside the rotating rod, two sides of the motion rod penetrate through the rotating rod and extend to the outer side of the rotating rod, and one side of the surface of the rotating rod is uniformly and fixedly connected with a fixing block, the device comprises a fixed block, a fixed clamping piece, a fan blade, a fixed disc, a first pull rod, a connecting block, a second motor, a second shaft rod, a threaded sleeve and a second pull rod, wherein the fixed clamping piece is embedded at one end of the fixed block, the fan blade is fixedly connected at one end of the fixed clamping piece, the fixed disc is fixedly connected at one side of a moving rod, the surface of the fan blade is hinged with the first pull rod, one end of the first pull rod is hinged with the fixed disc through a hinged shaft, the connecting block is connected at the other side of the moving rod through an embedded bearing, a moving bin is arranged on the inner wall of one end of a circulating shell, the second motor is arranged at the other end of the circulating shell, the second shaft rod is fixedly connected at the output end of the second motor, one end of the second shaft rod penetrates through the circulating shell and extends into the first shaft rod, a threaded rod is arranged in the first shaft rod, the two ends of the threaded rod are both connected with the inner wall of the moving bin through the embedded bearing, a threaded sleeve is sleeved with the threaded sleeve, one end of the second pull rod is hinged with the second pull rod through a hinged shaft, the one end of second pull rod passes the inside that the motion storehouse extends to the circulation shell, the one end of second pull rod is passed through the articulated shaft and is connected with the connecting block is articulated mutually, the one end of first axostylus axostyle is passed through the bevel gear transmission with the surface of dwang and is connected, the one end of second axostylus axostyle is passed through the bevel gear transmission with one side on screw rod surface and is connected, one side fixedly connected with filter mechanism subassembly of circulation shell.
Preferably, two sets of sliders of fixed connection all on the inner wall at fixed external member both ends, and two sets of sliders all symmetric distribution, the spout with slider matched with is seted up on the surface of dwang.
Preferably, the rotating rod is a cross rod, and the inner wall of the moving rod is in a cross shape.
Preferably, the filtering mechanism assembly comprises a filter screen, both ends of the filter screen are fixedly connected with an insert block, both ends of one side surface of the circulation shell are uniformly provided with a first fixing groove, one end of the insert block passes through the filter screen and extends into the first fixing groove, one side of the insert block passes through the circulation shell and extends into the first fixing groove, one end of the insert block is provided with a buffer groove, the inner wall of one end of the first fixing groove is provided with a second fixing groove, the inside of the buffer groove is provided with a fixture block, one end of the fixture block passes through the insert block and extends into the second fixing groove, the inside of the second fixing groove is provided with a touch block, one side of the touch block is fixedly connected with a pressing rod, one side of the pressing rod passes through the second fixing groove and extends to the outer side of the circulation shell, the inside of the buffer groove is provided with a spring, one end of the spring is fixedly connected with one end of the clamping block, and the other end of the spring is fixedly connected with the inner wall of the buffer groove.
Preferably, both sides of the clamping block are fixedly connected with sliding blocks, and sliding grooves are formed in the inner walls of both sides of the buffer groove.
Preferably, one side of one end of the touch block is inclined, one side of one end of the second fixing groove is inclined, the surface of the pressing rod is sleeved with a torsion spring, one end of the torsion spring is fixedly connected with the surface of the pressing rod, and the other end of the torsion spring is fixedly connected with the inner wall of the second fixing groove.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a fan main part subassembly, the device can be adjusted the flabellum fixed angle of flabellum fast, can be good realize under the condition of flabellum rotation, adjust the flabellum interval of its angle to can be good change traditional axial fan's amount of wind output efficiency, through the filter mechanism subassembly, the device is when constantly carrying the air, the filter screen can be good filters the granule impurity in carrying the air and clears away, simultaneously convenience of customers's dismantlement;
1. by arranging the fan main body assembly, when a user uses the device, the first motor is started, the fan blades can rotate in the circulating shell rapidly to convey outside air, the second motor is started, the moving rod can move in the rotating rod at a constant speed and rapidly adjust the fixed angle of the fan blades, and the adjustment of the blade interval of the angle of the fan blades can be well realized under the condition of the rotation of the fan blades, so that the air output efficiency of the traditional axial flow fan can be well changed, therefore, the device can well improve the existing device through the fan main body assembly, the air conveying efficiency of the fan can be well changed by the user, the practicability of the device is greatly enhanced, and the use efficiency of the fan is improved;
2. through being provided with the filtering mechanism subassembly, the device is when constantly carrying air, the filter screen can be good will carry the granule impurity in the air to filter and clear away, good assurance air carrying's cleanliness avoids directly carrying in to the carriage, thereby influence the inside air quality in carriage, and the user presses the push rod through pressing, can realize quick dismantlement to the filter screen, convenience of customers ' operation, the user can be regular dismantles the filter screen and washs, to a certain extent, the device has strengthened user's application range.
Drawings
FIG. 1 is a schematic sectional view of the front view of the structure of the present invention;
fig. 2 is an enlarged schematic view of the structure a in fig. 1 according to the present invention;
fig. 3 is an enlarged schematic view of the structure B in fig. 1 according to the present invention;
FIG. 4 is a schematic side view of a section of a transfer lever according to the present invention;
fig. 5 is a schematic side view of the structure of the present invention.
In the figure: 100. a fan body assembly; 110. a flow-through shell; 111. a first motor; 112. a first shaft lever; 113. a fixation kit; 114. rotating the rod; 115. a motion bar; 116. a fixed block; 117. fixing the clamping piece; 118. a fan blade; 119. fixing the disc; 120. a first pull rod; 121. connecting blocks; 122. a motion cabin; 123. a second motor; 124. a threaded rod; 125. a threaded sleeve; 126. a second pull rod; 127. a second shaft lever; 200. a filter mechanism assembly; 210. a filter screen; 211. inserting a block; 212. a buffer tank; 213. a clamping block; 214. a first fixing groove; 215. a second fixing groove; 216. a contact block; 217. the rod is pressed.
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 some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides an embodiment:
a ventilation and smoke exhaust device of a subway internal combustion engineering vehicle comprises a fan main body assembly 100, wherein the fan main body assembly 100 comprises a circulation shell 110, one end of the circulation shell 110 is provided with a first motor 111, the output end of the first motor 111 is fixedly connected with a first shaft rod 112, one end of the first shaft rod 112 penetrates through the circulation shell 110 and extends to the inside of the circulation shell 110, one end of the surface of the first shaft rod 112 is connected with the inner wall of the circulation shell 110 through a bearing frame, the inside of the circulation shell 110 is provided with a fixing sleeve part 113, two ends of the fixing sleeve part 113 are fixedly connected with the inner wall of the circulation shell 110, the inside of the fixing sleeve part 113 is provided with a rotating rod 114, two sides of the rotating rod 114 penetrate through the fixing sleeve part 113 and extend to the outer side of the fixing sleeve part 113, the inside of the rotating rod 114 is provided with a moving rod 115, two sides of the moving rod 115 penetrate through the rotating rod 114 and extend to the outer side of the rotating rod 114, and one side of the surface of the rotating rod 114 is uniformly and fixedly connected with a fixing block 116, one end of the fixing block 116 is embedded with a fixing fastener 117, one end of the fixing fastener 117 is fixedly connected with a fan blade 118, one side of the moving rod 115 is fixedly connected with a fixed disc 119, the surface of the fan blade 118 is hinged with a first pull rod 120, one end of the first pull rod 120 is hinged with the fixed disc 119 through a hinge shaft, the other side of the moving rod 115 is connected with a connecting block 121 through an embedded bearing, the inner wall of one end of the circulating shell 110 is provided with a moving bin 122, the other end of the circulating shell 110 is provided with a second motor 123, the output end of the second motor 123 is fixedly connected with a second shaft rod 127, one end of the second shaft rod 127 passes through the circulating shell 110 and extends into the first shaft rod 112, a threaded rod 124 is arranged inside the first shaft rod 112, both ends of the threaded rod 124 are connected with the inner wall of the moving bin 122 through embedded bearings, a threaded sleeve 125 is sleeved on the surface of the threaded rod 124, one end of the threaded sleeve 125 is hinged with a second pull rod 126 through a hinge shaft, one end of the second pull rod 126 passes through the motion cabin 122 and extends to the inside of the flow-through shell 110, one end of the second pull rod 126 is hinged with the connecting block 121 through a hinge shaft, one end of the first shaft rod 112 is in transmission connection with the surface of the rotating rod 114 through a bevel gear, one end of the second shaft rod 127 is in transmission connection with one side of the surface of the threaded rod 124 through a bevel gear, and one side of the flow-through shell 110 is fixedly connected with the filtering mechanism assembly 200;
furthermore, two sets of sliders are fixedly connected to inner walls at two ends of the fixed sleeve 113 and symmetrically distributed, a sliding groove matched with the slider is formed in the surface of the rotating rod 114, and the sliders are fixed to the inner walls at two ends of the fixed sleeve 113, so that when the rotating rod 114 rotates in the fixed sleeve 113, the sliders slide in the sliding groove, and the sliders and the sliding groove are matched with each other, thereby well reducing friction force generated by contact between the rotating rod 114 and the inner wall of the fixed sleeve 113 when the rotating rod 114 rolls in the fixed sleeve 113, and increasing smoothness of the rotating rod 114 when the rotating rod 114 rolls;
further, the motion rod 115 is a cross rod, the inner wall of the rotation rod 114 is in a cross shape, and the motion rod 115 is in a cross shape with the inner walls of the rotation rod 114, so that when the motion rod 115 moves inside the rotation rod 114, the motion rod 115 is matched with the inner wall of the rotation rod 114, and the moving track of the motion rod 115 can be well defined;
further, the filtering mechanism assembly 200 includes a filtering net 210, both ends of the filtering net 210 are fixedly connected with an inserting block 211, both ends of a surface of one side of the circulation shell 110 are uniformly provided with a first fixing groove 214, one end of the inserting block 211 passes through the filtering net 210 and extends into the first fixing groove 214, one side of the inserting block 211 passes through the circulation shell 110 and extends into the first fixing groove 214, one end of the inserting block 211 is provided with a buffer groove 212, an inner wall of one end of the first fixing groove 214 is provided with a second fixing groove 215, the buffer groove 212 is provided with a fixture block 213, one end of the fixture block 213 passes through the inserting block 211 and extends into the second fixing groove 215, the second fixing groove 215 is provided with a contact block 216, one side of the contact block 216 is fixedly connected with a pressing rod 217, one side of the pressing rod 217 passes through the second fixing groove 215 and extends to the outer side of the circulation shell 110, the buffer groove 212 is provided with a spring, one end of each spring is fixedly connected with one end of the fixture block 213, the other end of each spring is fixedly connected with the inner wall of the buffer groove 212, when the device is operated, when air is conveyed into a carriage, the filter screen 210 can well filter air conveyed from the outside, a large amount of impurities mixed in the conveyed air are removed, and when the device is operated for a long time, a user can quickly detach the filter screen 210 by pressing the pressing rod 217, so that the filter screen 210 is replaced and cleaned;
furthermore, both sides of the latch 213 are fixedly connected with sliders, and the inner walls of both sides of the buffer slot 212 are respectively provided with a sliding slot, so that when the latch 213 is forced to move in the buffer slot 212, the latch 213 drives the sliders to slide in the sliding slots, and the moving track of the latch 213 can be well limited by the mutual matching of the sliding slots of the sliders;
further, one side of one end of the abutting block 216 is inclined, one side of one end of the second fixing groove 215 is inclined, the surface of the pressing rod 217 is sleeved with a torsion spring, one end of the torsion spring is fixedly connected with the surface of the pressing rod 217, the other end of the torsion spring is fixedly connected with the inner wall of the second fixing groove 215, when the abutting block 216 is forced to abut against the second fixing groove 215, one side of the abutting block 216, which is contacted with the second fixing groove 215, is inclined, when the abutting block 216 is contacted with the second fixing groove 215, the second fixing groove 215 can be forced to move towards the inside of the buffer groove 212 quickly, when a user presses the abutting block 216, the abutting block 216 can move relatively, meanwhile, the torsion spring sleeved on the surface of the abutting block can be driven to deform quickly, when the user releases the pressing of the abutting block 216, the resilience of the torsion spring, the contact block 216 can be rapidly driven to automatically reset.
The working principle is as follows: when the user uses the device, the user firstly needs to connect the first motor 111 and the second motor 123 of the device with an external power supply, so that the first motor 111 and the second motor 123 can be normally turned on, then the user can turn on the first motor 111, so that the output end of the first motor 111 drives the first shaft rod 112 to continuously rotate in the circulating shell 110, and when the first shaft rod 112 rotates, one end of the first shaft rod 112 and the surface of the rotating rod 114 are engaged with each other through the bevel gears, the rotating rod 114 rapidly drives the moving rod 115 to rotate in the fixed sleeve 113, and when the rotating rod 114 rotates, the shell simultaneously drives the fan blades 118 to rapidly rotate to convey the external air, if the user adjusts the air conveying efficiency, the user can turn on the second motor 123, after the second motor 123 is turned on, the output end of the second motor 123 can continuously drive the second shaft rod 127 to rotate in the moving cabin 122, when the second shaft rod 127 rotates, one end of the second shaft rod 127 is meshed with the surface of the threaded rod 124 through a bevel gear, the threaded rod 124 can simultaneously perform self-rotation movement in the movement bin 122, when the threaded rod 124 rotates, the threaded rod 124 is matched with a threaded structure formed in the threaded sleeve 125, the threaded sleeve 125 can move to slide on the surface of the threaded rod 124, and the threaded sleeve 125 continuously slides and forms a push-pull force on the connecting block 121 through the second pull rod 126, so that the connecting block 121 can drive the movement rod 115 to contract in the rotation rod 114 after being stressed, the movement rod 115 drives the fixed disk 119 to perform same-direction movement when moving, and the first pull rod 120 is provided to pull the fan blades 118 to perform angle adjustment;
the device is in the operation, when to the inside air supply in carriage, filter screen 210 can filter the outside ground air of carrying well, will carry in the air a large amount of impurity with ground, and the device is when long-time operation, the user accessible is pressed and is pressed pole 217, press pole 217 atress back, drive fast and touch block 216 contradict each other with fixture block 213 in the inside of second fixed slot 215, fixture block 213 atress back, can contract fast to the inside of dashpot 212, and when constantly contracting, extrude the inside spring of dashpot 212, make the spring atress take place deformation, contract completely to the inside of dashpot 212 until fixture block 213, the user can dismantle filter screen 210 fast, change the washing to filter screen 210.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. A ventilation and smoke exhaust device of a subway internal combustion engineering vehicle comprises a fan main body assembly (100), and is characterized in that: the fan main body assembly (100) comprises a circulation shell (110), a first motor (111) is installed at one end of the circulation shell (110), a first shaft rod (112) is fixedly connected to an output end of the first motor (111), one end of the first shaft rod (112) penetrates through the circulation shell (110) and extends to the inside of the circulation shell (110), one end of the surface of the first shaft rod (112) is connected with the inner wall of the circulation shell (110) through a bearing frame, a fixing sleeve piece (113) is arranged inside the circulation shell (110), two ends of the fixing sleeve piece (113) are fixedly connected with the inner wall of the circulation shell (110), a rotating rod (114) is arranged inside the fixing sleeve piece (113), two sides of the rotating rod (114) penetrate through the fixing sleeve piece (113) and extend to the outer side of the fixing sleeve piece (113), and a moving rod (115) is arranged inside the rotating rod (114), and the both sides of motion pole (115) all pass dwang (114) and extend to the outside of dwang (114), the even fixedly connected with fixed block (116) in one side on dwang (114) surface, the one end of fixed block (116) all gomphosis has fixed fastener (117), the one end of fixed fastener (117) all fixedly connected with flabellum (118), one side fixedly connected with fixed disk (119) of motion pole (115), the surface of flabellum (118) all articulates and is connected with first pull rod (120), the one end of first pull rod (120) all articulates with fixed disk (119) through the articulated shaft and is connected, the opposite side of motion pole (115) is connected with connecting block (121) through embedded bearing, motion storehouse (122) have been seted up to the inner wall of circulation shell (110) one end, second motor (123) are installed to the other end of circulation shell (110), the output end of the second motor (123) is fixedly connected with a second shaft lever (127), one end of the second shaft lever (127) penetrates through the circulation shell (110) and extends into the first shaft lever (112), a threaded rod (124) is arranged inside the first shaft lever (112), two ends of the threaded rod (124) are connected with the inner wall of the movement bin (122) through embedded bearings, a threaded sleeve (125) is sleeved on the surface of the threaded rod (124), one end of the threaded sleeve (125) is hinged and connected with a second pull rod (126) through a hinged shaft, one end of the second pull rod (126) penetrates through the movement bin (122) and extends into the circulation shell (110), one end of the second pull rod (126) is hinged and connected with the connecting block (121) through a hinged shaft, one end of the first shaft lever (112) is in transmission connection with the surface of the rotating lever (114) through a bevel gear, one end of the second shaft lever (127) is in transmission connection with one side of the surface of the threaded rod (124) through a bevel gear, and one side of the circulating shell (110) is fixedly connected with a filtering mechanism assembly (200).
2. The ventilation and smoke exhaust device of the metro internal combustion engine working vehicle according to claim 1, characterized in that: all two sets of sliders of fixedly connected with on the inner wall at fixed external member (113) both ends, and two sets of sliders are all symmetric distribution, the spout with slider matched with has been seted up on the surface of dwang (114).
3. The ventilation and smoke exhaust device of the metro internal combustion engine working vehicle according to claim 1, characterized in that: the rotating rod (114) is a cross rod, and the inner wall of the moving rod (115) is in a cross shape.
4. The ventilation and smoke exhaust device of the metro internal combustion engine working vehicle according to claim 1, characterized in that: the filtering mechanism assembly (200) comprises a filtering net (210), wherein two ends of the filtering net (210) are fixedly connected with inserting blocks (211), first fixing grooves (214) are uniformly formed in two ends of the surface of one side of the circulating shell (110), one ends of the inserting blocks (211) penetrate through the filtering net (210) and extend to the inside of the first fixing grooves (214), one sides of the inserting blocks (211) penetrate through the circulating shell (110) and extend to the inside of the first fixing grooves (214), one ends of the inserting blocks (211) are provided with buffer grooves (212), the inner wall of one end of each first fixing groove (214) is provided with a second fixing groove (215), fixture blocks (213) are arranged inside the buffer grooves (212), one ends of the fixture blocks (213) penetrate through the inserting blocks (211) and extend to the inside of the second fixing grooves (215), and abutting contact blocks (216) are arranged inside the second fixing grooves (215), all fixedly connected with in one side of touch multitouch (216) pushes away pole (217), the outside that second fixed slot (215) extended to circulation shell (110) is all passed to one side of pushing away pole (217), the inside of dashpot (212) all is provided with the spring, the one end of spring all with the one end looks fixed connection of fixture block (213), the other end of spring all with the inner wall looks fixed connection of dashpot (212).
5. The ventilation and smoke exhaust device of the metro internal combustion engine working vehicle according to claim 4, characterized in that: the two sides of the clamping block (213) are fixedly connected with sliding blocks, and the inner walls of the two sides of the buffer groove (212) are provided with sliding grooves.
6. The ventilation and smoke exhaust device of the metro internal combustion engine working vehicle according to claim 4, characterized in that: one side of the one end of the contact block (216) is inclined, one side of one end of the second fixing groove (215) is inclined, the surface of the pressing rod (217) is sleeved with a torsion spring, one end of the torsion spring is fixedly connected with the surface of the pressing rod (217), and the other end of the torsion spring is fixedly connected with the inner wall of the second fixing groove (215).
CN202120585892.1U 2021-03-23 2021-03-23 Ventilation and smoke exhaust device of subway internal combustion engineering vehicle Expired - Fee Related CN214728803U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120585892.1U CN214728803U (en) 2021-03-23 2021-03-23 Ventilation and smoke exhaust device of subway internal combustion engineering vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120585892.1U CN214728803U (en) 2021-03-23 2021-03-23 Ventilation and smoke exhaust device of subway internal combustion engineering vehicle

Publications (1)

Publication Number Publication Date
CN214728803U true CN214728803U (en) 2021-11-16

Family

ID=78596434

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120585892.1U Expired - Fee Related CN214728803U (en) 2021-03-23 2021-03-23 Ventilation and smoke exhaust device of subway internal combustion engineering vehicle

Country Status (1)

Country Link
CN (1) CN214728803U (en)

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Granted publication date: 20211116

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