CN212898577U - Height-adjustable's efflux fan for tunnel - Google Patents
Height-adjustable's efflux fan for tunnel Download PDFInfo
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- CN212898577U CN212898577U CN202021407694.8U CN202021407694U CN212898577U CN 212898577 U CN212898577 U CN 212898577U CN 202021407694 U CN202021407694 U CN 202021407694U CN 212898577 U CN212898577 U CN 212898577U
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Abstract
The utility model relates to the technical field of fans, a height-adjustable's jet fan for tunnel is disclosed, including the dryer, the inside of dryer is equipped with motor and impeller, the dryer is equipped with two sets of parallelogram mechanisms of adjusting its height, and parallelogram mechanism sets up on the upper plate, is equipped with the adjustment mechanism who adjusts the contained angle size of two sets of parallelogram mechanisms on the upper plate. The height of the air duct can be adjusted through the two parallelogram mechanisms and the adjusting mechanism, so that noise generated by friction between air flow emitted by the jet fan and the top wall of the tunnel is effectively reduced.
Description
The technical field is as follows:
the utility model relates to a fan technical field, concretely relates to height-adjustable's jet fan for tunnel.
Background art:
in a subway tunnel, in order to discharge waste gases such as carbon dioxide and sulfur dioxide in the tunnel and introduce external fresh air, a plurality of jet flow discharge fans are generally required to be sequentially installed on the top wall of the tunnel for ventilation. The air current that jet fan jetted out takes place very big noise with the roof friction in tunnel easily, and current jet fan structure generally adopts fixed connection with the roof, can not reduce the air current that jet fan jetted out and the frictional problem of tunnel roof through the height of adjusting jet fan
The utility model has the following contents:
the utility model aims at overcoming prior art not enough, providing a height-adjustable's jet fan for tunnel, it is through the height of two parallelogram mechanisms and the adjustable dryer of adjustment mechanism to effectively reduce the noise that the air current that jet fan jetted out and the friction of tunnel roof produced.
The utility model provides a technical problem's scheme is:
the utility model provides a height-adjustable's jet fan for tunnel, includes the dryer, and the inside of dryer is equipped with motor and impeller, the dryer is equipped with two sets of parallelogram mechanisms of adjusting its height, and parallelogram mechanism sets up on the upper plate, is equipped with the adjustment mechanism who adjusts the contained angle size of two sets of parallelogram mechanisms on the upper plate.
Parallelogram mechanism is including fixing the articulated seat that sets up about two fixed on the upper plate, and every articulated seat articulates there is the single arm-drag that the slope set up, and the lower extreme of two single arm-drag slope settings and two single arm-drags articulates the both ends at the pull rod that the level set up, be fixed with two bellied linking arms downwards on the pull rod, the lower extreme fixedly connected with connecting rod of linking arm, the connecting rod is fixed on the outer wall of dryer.
The adjusting mechanism comprises lifting rods fixedly connected with pull rods of the two groups of parallelogram mechanisms, the lifting rods are inserted and sleeved at the lower ends of a pair of adjusting arms arranged in a V shape, the upper end of each adjusting arm is hinged to a corresponding supporting seat, the supporting seats are connected to the upper base plate in a sliding manner, a rotating shaft is rotatably connected to a middle cavity of each adjusting arm, threaded holes penetrating in the radial direction are formed in the rotating shaft, the thread pitches of the threaded holes in the two rotating shafts are equal, but the thread turning directions of the threaded holes in the two rotating shafts are opposite; the threaded holes in the two rotating shafts are respectively screwed in the middle parts of the first screw rod and the second screw rod, the first screw rod and the second screw rod are fixedly connected with each other in a coaxial mode, and the hexagonal boss is fixedly connected to one end of the first screw rod.
And a hexagonal counter bore is formed in the hexagonal boss.
The utility model discloses an outstanding effect is:
compared with the prior art, the height of the air duct can be adjusted through the two parallelogram mechanisms and the adjusting mechanism, so that the noise generated by the friction between the airflow emitted by the jet fan and the top wall of the tunnel is effectively reduced.
Description of the drawings:
FIG. 1 is a front view of the present invention;
fig. 2 is a right side view of the present invention;
fig. 3 is a cross-sectional view of the present invention.
The specific implementation mode is as follows:
the embodiment is shown in fig. 1 to 3, and the tunnel jet fan with the adjustable height comprises an air duct 11, wherein a motor 12 and an impeller 13 are arranged inside the air duct 11, the air duct 11 is provided with two sets of parallelogram mechanisms 2 for adjusting the height of the air duct, the parallelogram mechanisms 2 are arranged on an upper base plate 3, and an adjusting mechanism 4 for adjusting the included angle of the two sets of parallelogram mechanisms 2 is arranged on the upper base plate 3.
Furthermore, parallelogram mechanism 2 is including fixing articulated seat 21 of setting about two fixed on upper plate 3, and every articulated seat 21 articulates there is an arm-drag 22 that the slope set up, and two arm-drag 22 slopes to set up and the lower extreme of two arm-drag 22 articulates the both ends at the pull rod 23 that the level set up, be fixed with two bellied linking arm 24 downwards on the pull rod 23, the lower extreme fixedly connected with connecting rod 25 of linking arm 24, connecting rod 25 fixes on the outer wall of dryer 11.
Furthermore, the adjusting mechanism 4 comprises a lifting rod 41 fixedly connected with the pull rods 23 of the two sets of parallelogram mechanisms 2, the lifting rod 41 is inserted and sleeved at the lower ends of a pair of adjusting arms 42 arranged in a V shape, the upper end of each adjusting arm 42 is hinged on a corresponding supporting seat 43, the supporting seats 43 are connected on the upper base plate 3 in a sliding manner, a rotating shaft 44 is rotatably connected in a middle cavity of the adjusting arms 42, threaded holes 441 radially penetrating are formed in the rotating shaft 44, the thread pitches of the threaded holes 441 on the two rotating shafts 44 are equal, but the thread directions of the threaded holes 441 on the two rotating shafts 44 are opposite; the threaded holes 441 on the two rotating shafts 44 are respectively screwed in the middle parts of the first screw rod 45 and the second screw rod 46, the first screw rod 45 and the second screw rod 46 are coaxially and fixedly connected, and one end of the first screw rod 45 is fixedly connected with a hexagonal boss 47.
Further, a hexagonal counterbore 471 is formed in the hexagonal boss 47.
The working principle is as follows: the hexagonal boss 47 is rotated to drive the first screw 45 and the second screw 46 to rotate synchronously, the first screw 45 and the second screw 46 drive the two rotating shafts 44 to approach or separate from each other, the rotating shafts 44 drive the two adjusting arms 42 to fold or unfold, the adjusting arms 42 drive the supporting seat 43 to slide on the upper base plate 3, when the two adjusting arms 42 fold (i.e. the included angle between the two arms becomes smaller), the pull rod 23 moves downwards to move the air duct 11 downwards, otherwise, the air duct moves upwards.
Finally, the above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (4)
1. The utility model provides a height-adjustable's jet fan for tunnel, includes dryer (11), and the inside of dryer (11) is equipped with motor (12) and impeller (13), its characterized in that: the air duct (11) is provided with two sets of parallelogram mechanisms (2) for adjusting the height of the air duct, the parallelogram mechanisms (2) are arranged on the upper base plate (3), and the upper base plate (3) is provided with an adjusting mechanism (4) for adjusting the included angle of the two sets of parallelogram mechanisms (2).
2. The height-adjustable jet fan for the tunnel according to claim 1, wherein: parallelogram mechanism (2) including fix articulated seat (21) of setting about two on upper plate (3), every articulated seat (21) articulates there is single arm-drag (22) that inclines to set up, and the lower extreme of two arm-drag (22) inclines to set up and two arm-drag (22) articulates at the both ends of pull rod (23) that the level set up, be fixed with two bellied linking arm (24) down on pull rod (23), the lower extreme fixedly connected with connecting rod (25) of linking arm (24), connecting rod (25) are fixed on the outer wall of dryer (11).
3. The height-adjustable jet fan for the tunnel according to claim 2, wherein: the adjusting mechanism (4) comprises lifting rods (41) fixedly connected with pull rods (23) of two groups of parallelogram mechanisms (2), the lifting rods (41) are inserted and sleeved at the lower ends of a pair of adjusting arms (42) arranged in a V shape, the upper end of each adjusting arm (42) is hinged on a corresponding supporting seat (43), the supporting seats (43) are connected on the upper base plate (3) in a sliding manner, a rotating shaft (44) is connected in a middle cavity of each adjusting arm (42) in a rotating manner, threaded holes (441) penetrating in the radial direction are formed in each rotating shaft (44), the thread pitches of the threaded holes (441) in the two rotating shafts (44) are equal, but the thread turning directions of the threaded holes (441) in the two rotating shafts (44) are opposite; threaded holes (441) in the two rotating shafts (44) are respectively screwed in the middle of the first screw rod (45) and the middle of the second screw rod (46), the first screw rod (45) and the second screw rod (46) are fixedly connected with each other in a coaxial mode, and a hexagonal boss (47) is fixedly connected to one end of the first screw rod (45).
4. The height-adjustable jet fan for the tunnel according to claim 3, wherein: a hexagonal counter bore (471) is formed in the hexagonal boss (47).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021407694.8U CN212898577U (en) | 2020-07-17 | 2020-07-17 | Height-adjustable's efflux fan for tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021407694.8U CN212898577U (en) | 2020-07-17 | 2020-07-17 | Height-adjustable's efflux fan for tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212898577U true CN212898577U (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021407694.8U Active CN212898577U (en) | 2020-07-17 | 2020-07-17 | Height-adjustable's efflux fan for tunnel |
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| Country | Link |
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| CN (1) | CN212898577U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202537A (en) * | 2021-06-21 | 2021-08-03 | 陕西惠齐电力科技开发有限公司 | Intelligent tunnel air supply and exhaust system based on DSP automatic control technology |
-
2020
- 2020-07-17 CN CN202021407694.8U patent/CN212898577U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202537A (en) * | 2021-06-21 | 2021-08-03 | 陕西惠齐电力科技开发有限公司 | Intelligent tunnel air supply and exhaust system based on DSP automatic control technology |
| CN113202537B (en) * | 2021-06-21 | 2023-09-05 | 陕西惠齐电力科技开发有限公司 | Intelligent tunnel air supply and exhaust system based on DSP automatic control technology |
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