CN209893828U

CN209893828U - Air door operating mechanism

Info

Publication number: CN209893828U
Application number: CN201920593509.XU
Authority: CN
Inventors: 魏笑晗; 魏献通; 石云志; 魏巍; 闫亚刚
Original assignee: Pingdingshan Senyuan Electric Co Ltd
Current assignee: Pingdingshan Senyuan Electric Co Ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-01-03
Anticipated expiration: 2029-04-28

Abstract

The utility model discloses an air door operating mechanism, including door-hinge and casing, the door-hinge passes behind the casing and is connected with the air door, is equipped with switch trigger mechanism and sheave drive mechanism on the door-hinge in the casing, and sheave drive mechanism includes door-hinge sheave drive assembly, switch sheave drive assembly and manual power component, and manual power component transmits power drive air door for door-hinge sheave drive assembly and removes, and manual power component transmits power for switch sheave drive assembly and touches switch trigger mechanism. The utility model has simple structure, small volume and reduced volume. The utility model discloses the action is reliable, and two race ends of door axle sheave symmetry can satisfy the shutting requirement for the circular arc design, can avoid again "close the door not in place" and the emergence of "motor stall". The assembly adjustment is simple, as long as the included angle of the installation screw hole on control door spindle sheave and the door spindle can. And the utility model discloses well motor manual shaft has "two-way clutch", and manual shaft and motor throw off during manual, and operating force is little and quick.

Description

Air door operating mechanism

Technical Field

The utility model belongs to the technical field of grain ventilation equipment, concretely relates to air door operating mechanism.

Background

The grain storage bin is provided with a plurality of ventilation openings and is used for ventilation cooling, dehumidification and the like of grains. When the air door is closed, the air door can be mechanically closed and tightly sealed, and the requirements of rain prevention, heat insulation and the like are met. Can be operated electrically or manually.

As shown in the figures 1 and 2, the original mechanism is selected and used, worm and gear transmission is adopted, the worm wheel 24 rotates synchronously with the door shaft 21 and the cam 23, and the cam 23 triggers the position switch 22 to control the opening and closing positions of the air door.

This device has the following disadvantages: 1) because the worm wheel 24 rotates synchronously with the door shaft 21 and the cam 23, the relative position requirements of the worm wheel 24, the cam 23 and the touch position switch 22 are high, if the cam 23 is advanced, the air door is not closed in place, and if the cam 23 is delayed, the motor is locked and burnt. And the requirements on the manufacturing precision and the assembling and debugging precision of the element are higher. 2) The included angle between the motor shaft and the worm wheel shaft is 90 degrees, so that the structure is complex and the size is large. 3) The manual time consumption is longer.

SUMMERY OF THE UTILITY MODEL

To the not enough of description among the above-mentioned prior art, the utility model provides an air door operating mechanism uses manual axle to take two way clutch's motor as power source to it is asynchronous to make door shaft sheave and cam sheave.

For solving the technical problem, the utility model discloses the technical scheme who adopts as follows:

the air door operating mechanism comprises a door shaft and a shell, wherein the door shaft penetrates through the shell and then is connected with an air door, a switch trigger mechanism and a sheave transmission mechanism are arranged on the door shaft in the shell, the sheave transmission mechanism comprises a door shaft sheave transmission assembly, a switch sheave transmission assembly and a manual power assembly, the manual power assembly transmits power to the door shaft sheave transmission assembly to drive the air door to move, and the manual power assembly transmits power to the switch sheave transmission assembly to trigger the switch trigger mechanism.

The switch trigger mechanism comprises a switch mounting plate, a door closing position switch, a cam and a door opening position switch; the switch mounting plate is sleeved on the door shaft and fixed on the air door; the door closing position switch and the door opening position switch are installed on the switch installation plate, the cam is sleeved on the door shaft and located between the door closing position switch and the door opening position switch, and the cam rotates around the door shaft under the action of the switch grooved wheel transmission assembly.

The manual power assembly comprises a manual driving shaft, a motor, a driving disc and a driving pin shaft; one end of the manual driving shaft extends out of the shell, the other end of the manual driving shaft is connected with a manual shaft of the motor, the motor is fixed on the shell, a power shaft of the motor is fixedly connected with the driving disc, and a driving pin shaft is arranged on the driving disc and matched with the door shaft grooved wheel transmission assembly and the switch grooved wheel transmission assembly.

The switch grooved wheel transmission assembly comprises a cam grooved wheel and a transmission sleeve, the cam grooved wheel is sleeved on the door shaft and rotates around the door shaft, and the cam grooved wheel is fixedly connected with the cam through the transmission sleeve; a plurality of wheel grooves I are formed in the cam grooved wheel and are matched with the driving pin shaft to drive the cam grooved wheel to rotate.

The door shaft grooved pulley transmission assembly comprises a door shaft grooved pulley, the door shaft grooved pulley is sleeved on the door shaft and rotates together with the door shaft, and the door shaft grooved pulley can be fixed with the door shaft by using screws. The pulley groove II is arranged on the grooved pulley of the door shaft, and the tail end of the pulley groove II is an arc surface, so that the locking requirement can be met, and the phenomena of 'door not closed in place' and 'motor locked rotation' can be avoided; the pulley groove II is matched with the driving pin shaft to drive the door shaft grooved pulley to rotate, and the included angle between the pulley groove II and the pulley groove I is different, so that the action starting stage of the cam grooved pulley is delayed, and the action ending stage is advanced.

The utility model discloses the mechanism is simple, small, compares the volume with former mechanism and reduces. And the utility model discloses the action is reliable, and two race ends of door axle sheave symmetry are the circular arc design, can satisfy the shutting requirement, can avoid again "close the door not in place" and the emergence of "motor stall". The assembly adjustment is simple, as long as the included angle of the installation screw hole on control door spindle sheave and the door spindle can. And the utility model discloses well motor manual shaft has "two-way clutch", and manual shaft and motor throw off during manual, and operating force is little and quick.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a first structural schematic diagram of a conventional mechanism.

Fig. 2 is a schematic structural diagram of a conventional mechanism.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is a sectional view taken along line a-a of fig. 3.

Fig. 5 is a sectional view taken along line B-B in fig. 3.

Fig. 6 is a cross-sectional view taken along line C-C of fig. 3.

Fig. 7 is a schematic diagram of the state of the switch trigger mechanism at the beginning of door closing of the present invention.

Fig. 8 is a schematic view of the state of the cam sheave transmission assembly at the beginning of door closing of the present invention.

Fig. 9 is a schematic view of the state of the sheave transmission assembly of the door shaft at the beginning of closing the door according to the present invention.

Fig. 10 is a schematic diagram of the state of the switch trigger mechanism when the door is closed.

Fig. 11 is the state diagram of the cam sheave transmission assembly when the door is closed.

Fig. 12 is the state diagram of the sheave transmission assembly of the door spindle when the door is closed.

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 any creative effort belong to the protection scope of the present invention.

As shown in fig. 3, an air door operating mechanism includes a door shaft 5 and a housing 14, the door shaft 5 penetrates through the housing 14 and is connected to an air door, a switch triggering mechanism and a sheave transmission mechanism are disposed on the door shaft 5 in the housing 14, the sheave transmission mechanism includes a door shaft sheave transmission assembly, a switch sheave transmission assembly and a manual power assembly, the manual power assembly transmits power to the door shaft sheave transmission assembly to drive the air door to move, and the manual power assembly transmits power to the switch sheave transmission assembly to trigger the switch triggering mechanism.

Specifically, the manual power assembly, as shown in fig. 3, includes a manual driving shaft 12, a motor 13, a driving disc 9, and a driving pin 8; one end of a manual driving shaft 12 extends out of the shell 14, the other end of the manual driving shaft is connected with a manual shaft of a motor 13, the motor 13 is fixed on the shell 14, a power shaft of the motor 13 is fixedly connected with a driving disc 9, and a driving pin shaft 8 is arranged on the driving disc 9 and matched with the door shaft grooved wheel transmission assembly and the switch grooved wheel transmission assembly.

The switch trigger mechanism, as shown in fig. 4, includes a switch mounting plate 1, a door closing position switch 3, a cam 4, and a door opening position switch 6; the switch mounting plate 1 is sleeved on the door shaft 5 and fixed on the air door; the door closing position switch 3 and the door opening position switch 6 are installed on the switch installation plate 1, the cam 4 is sleeved on the door shaft 5 and is located between the door closing position switch 3 and the door opening position switch 6, and the cam 4 rotates around the door shaft 5 under the action of the switch grooved wheel transmission assembly.

The switch sheave transmission assembly, as shown in fig. 5, comprises a cam sheave 7 and a transmission sleeve 2, wherein the cam sheave 7 is sleeved on the door shaft 5 and rotates around the door shaft 5, and the cam sheave 7 is fixedly connected with the cam 4 through the transmission sleeve 2; a plurality of wheel grooves I15 are formed in the cam sheave 7, and the wheel grooves I15 are matched with the driving pin shaft 8 to drive the cam sheave 7 to rotate.

The door shaft grooved pulley transmission assembly, as shown in fig. 6, includes a door shaft grooved pulley 11, the door shaft grooved pulley 11 is sleeved on the door shaft 5 and rotates with the door shaft 5, and the door shaft grooved pulley and the door shaft can be fixed by screws. A wheel groove II 16 is arranged on the door shaft grooved wheel 11, and the tail end of the wheel groove II 16 is an arc surface, so that the locking requirement can be met, and the phenomena of 'door not closed in place' and 'motor locked rotation' can be avoided; the pulley groove II 16 is matched with the driving pin shaft 8 to drive the door shaft grooved pulley 11 to rotate, and the included angle between the pulley groove II 16 and the pulley groove I15 is different, so that the action starting stage of the cam grooved pulley 7 is delayed, and the action ending stage is advanced.

The using method comprises the following steps:

as shown in fig. 7-12, when the door is closed, the driving disc 9 and the driving pin 8 drive the door shaft grooved wheel 11 and the cam grooved wheel 7 to rotate, and when the air door moves to the designed position, the door shaft grooved wheel 11 stops rotating; and the cam grooved wheel 7 continues to rotate until the trigger position switch acts, and the mechanism stops. When the door is opened, the motion is the same, and the rotation direction is opposite.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. An air door operating mechanism is characterized in that: the air door comprises a door shaft (5) and a shell (14), wherein the door shaft (5) penetrates through the shell (14) and then is connected with an air door, a switch triggering mechanism and a sheave transmission mechanism are arranged on the door shaft (5) in the shell (14), the sheave transmission mechanism comprises a door shaft sheave transmission assembly, a switch sheave transmission assembly and a manual power assembly, the manual power assembly transmits power to the door shaft sheave transmission assembly to drive the air door to move, and the manual power assembly transmits power to the switch sheave transmission assembly to trigger the switch triggering mechanism.

2. The damper actuator of claim 1, wherein: the switch trigger mechanism comprises a switch mounting plate (1), a door closing position switch (3), a cam (4) and a door opening position switch (6); the switch mounting plate (1) is sleeved on the door shaft (5) and fixed on the air door; the door closing position switch (3) and the door opening position switch (6) are installed on the switch installation plate (1), the cam (4) is sleeved on the door shaft (5) and is located between the door closing position switch (3) and the door opening position switch (6), and the cam (4) rotates around the door shaft (5) under the action of the switch grooved wheel transmission assembly.

3. The damper actuator of claim 1 or 2, wherein: the manual power assembly comprises a manual driving shaft (12), a motor (13), a driving disc (9) and a driving pin shaft (8); one end of a manual driving shaft (12) extends out of the shell (14), the other end of the manual driving shaft is connected with a manual shaft of a motor (13), the motor (13) is fixed on the shell (14), a power shaft of the motor (13) is fixedly connected with a driving disc (9), and a driving pin shaft (8) is arranged on the driving disc (9) and matched with the door shaft grooved wheel transmission assembly and the switch grooved wheel transmission assembly.

4. The damper actuator of claim 3, wherein: the switch grooved wheel transmission assembly comprises a cam grooved wheel (7) and a transmission sleeve (2), wherein the cam grooved wheel (7) is sleeved on the door shaft (5) and rotates around the door shaft (5), and the cam grooved wheel (7) is fixedly connected with the cam (4) through the transmission sleeve (2); a plurality of wheel grooves I (15) are formed in the cam grooved wheel (7), and the wheel grooves I (15) are matched with the driving pin shaft (8) to drive the cam grooved wheel (7) to rotate.

5. The damper actuator of claim 4, wherein: door shaft sheave transmission assembly, including door shaft sheave (11), door shaft sheave (11) cover is established on door shaft (5) and rotates together with door shaft (5), is equipped with race II (16) on door shaft sheave (11), and race II (16) cooperate with drive pin axle (8) and drive door shaft sheave (11) and rotate, and race II (16) are different with the race contained angle of race I (15).

6. The damper actuator of claim 5, wherein: the tail end of the wheel groove II (16) is an arc surface.