A shutter device that can maintain straight wind direction and facilitate calculation of ventilation area

Abstract

The present invention relates to a shutter device that can maintain a straight wind direction and is convenient for calculating the ventilation area. In order to overcome the defects of existing shutters, the present invention includes a window frame, blades, a servo motor, a PLC controller, a lead screw, a guide rod and a rack block. The side length of the teeth of the rack block is equal to one-fourth of the circumference of the gear. Each gear is provided with a full opening hole and a full closing pin hole, and is equipped with an electromagnetic latch. All electromagnetic latches are controlled by the PLC controller. Both ends of the lead screw are respectively provided with a full closing stop point and a full opening stop point. The present invention can open and close each blade in sequence, and its wind direction is not biased in various states, and the wind path is straight. The wind area is easy to calculate. It is widely applicable to various factories and mines, and is particularly suitable for use in coal mines.

Description

Technical Field

[0001] The invention relates to a shutter device which can maintain a straight wind direction and is convenient for calculating a ventilation area. Background Art

[0002] The Chinese utility model with the authorization announcement of 2022.01.18 and the announcement number of CN 215565545 U discloses a shutter type fire smoke exhaust window, including a frame and a window frame, the window frame is arranged in the frame, a flip mechanism is arranged between the window frame and the frame, the shield is connected to the side end of the frame, the circular groove is opened on the inner surface of the opposite sides of the frame, the connecting block is connected to the inner surface of the shield, the bearing B is fixedly embedded in the connecting block, the lead screw is fixedly sleeved in the bearing B, the threaded sliding sleeve is connected to the side surface of the rack, the threaded sliding sleeve is threadedly sleeved on the lead screw, the motor is connected to the inner surface of the shield, and the output end of the motor is connected to the lead screw. The utility model has a simple structure and is easy to operate. The lead screw is driven by the motor, the lead screw and the threaded sliding sleeve cooperate with each other to drive the rack, and the rack drives the gear, thereby driving the window frame to flip, and the opening angle can be adjusted at will according to the usage.

[0003] Under this structure, all blades turn synchronously. Except for the fully open state, the wind direction in other states is biased to one side, and the wind path is tortuous, making the wind area difficult to calculate. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to overcome the above-mentioned defects of the prior art and provide a shutter device which can maintain a straight wind direction and is easy to calculate the ventilation area.

[0005] In order to solve the above technical problems, the shutter device which can maintain the straight wind direction and is convenient for calculating the ventilation area comprises a window frame, blades, a servo motor, a PLC controller, a lead screw, a guide rod and a rack block, each blade center is provided with a shaft rod, one end of each shaft rod is coaxially fixed with a gear, a threaded through hole and a guide hole are provided on the rack block, the lead screw and the guide rod are arranged in parallel on one side of each gear, and are respectively penetrated in the threaded through hole and the guide hole, the lead screw is driven by a servo motor, the servo motor is electrically connected to the PLC controller and is controlled by the PLC controller, the side of the rack block facing the gear is provided with teeth which can mesh with the gear, and the characteristics are as follows: The side length of the teeth of the rack block is equal to one-fourth of the circumference of the gear. Each gear is provided with a full-opening hole and a full-closing pin hole, respectively, and is equipped with an electromagnetic latch. Each electromagnetic latch is provided with an electromagnetically controlled pin column. The axis lines of the full-opening hole and the full-closing pin hole on each gear are located on the concentric circular surface of the axis line of the gear, and the plane passing through the axis line of the full-opening hole and the axis line of the gear on each gear is perpendicular to the plane passing through the axis line of the full-closing pin hole and the axis line of the gear. All electromagnetic latches are equipped with corresponding codes, and their electromagnetic coils are electrically connected to the PLC controller and controlled by the PLC controller. Both ends of the screw are provided with full-closing stop points and full-open stop points respectively.

[0006] Under the control of the PLC controller, when the rack block is located at the fully closed stop point, all blades are in a closed state, and the pins of all electromagnetic plugs are inserted into the fully closed pin holes on the corresponding gears. Similarly, when the rack block is located at the fully open stop point, all blades are in an open state, and the pins of all electromagnetic plugs are inserted into the fully open holes on the corresponding gears. During the process of the rack block driven by the lead screw to move from the fully closed stop point to the fully open stop point, when the rack block runs to the position where the front tooth contacts a certain gear, the servo motor stops, the electromagnetic plug corresponding to the gear is energized, and its pin retracts. Then the servo motor starts again and drives the gear through the rack block, and drives the corresponding blades to fully open through the gear. When the rack block moves forward to the position where the tooth behind it is out of mesh with the corresponding gear, the electromagnetic plug corresponding to the gear loses power, and its pin moves down and is inserted into the fully open hole of the corresponding gear under the action of its own gravity or gravity and a reset spring.

[0007] Similarly: when the lead screw drives the rack block to move from the fully open stop point to the fully closed stop point, when the rack block moves to the position where the front tooth contacts a certain gear, the servo motor stops, the electromagnetic pin corresponding to the gear is energized, and its pin retracts. Then the servo motor starts again and drives the gear through the rack block, and drives the corresponding blade to be fully closed through the gear. When the rack block moves forward to the position where the rear tooth disengages from the corresponding gear, the electromagnetic pin corresponding to the gear loses power, and its pin moves down and inserts into the fully closed pin hole of the corresponding gear under the action of gravity or gravity and reset spring. With such a design, the shutter device that can maintain a straight wind direction and is easy to calculate the ventilation area can open and close each blade in sequence. If there are N blades, the device can switch between fully closed, 1 / N opening, 2 / N opening, 3 / N opening...N / N opening (i.e. fully open), and in any state, the wind direction of the device is perpendicular to the window frame of the shutter.

[0008] As an optimization, the lower end of the pin is in a hemispherical head shape, and the outer ends of the full opening hole and the full closing pin hole are both arranged in a trumpet-shaped pit. Such a design facilitates the pin of the electromagnetic latch to be accurately inserted into the full opening hole or the full closing pin hole.

[0009] As an optimization, each gear is equipped with a photoelectric proximity switch. The light beam emitted by the photoelectric proximity switch is located on the cross section of the lead screw passing through the axis of the corresponding gear and below the running track of the rack block. It can sense the blocking of the light beam emitted by the passing rack block. All photoelectric proximity switches are equipped with the same coding as the electromagnetic plug matching the corresponding gear, and are electrically connected to the PLC controller and controlled by the PLC controller. When a photoelectric proximity switch senses that the light beam it emits is blocked by the rack block under the control of the PLC controller, the corresponding electromagnetic plug is energized and its pin is retracted.

[0010] When the photoelectric proximity switch is not added, the device relies on the strict position control method formed by the PLC controller, servo motor, lead screw, rack block and other components. After adding the photoelectric proximity switch, even if there is a slight error in the position control, it can ensure that when the rack block is meshed with a certain gear, the pin of the electromagnetic latch of the gear is in a retracted state, the movement of the rack block can drive the corresponding blade to rotate, and the gears on the shafts of other blades are locked by the pins of their electromagnetic latches, which is not easy to cause malfunction.

[0011] The shutter device of the present invention can maintain a straight wind direction and is convenient for calculating the ventilation area. Each blade can be opened and closed in sequence. The wind direction is not biased in various states, and the wind path is straight. The wind area is easy to calculate. The shutter device is widely applicable to various factories and mining enterprises, and is particularly suitable for use in coal mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following is a further description of the shutter device of the present invention which can maintain a straight wind direction and is convenient for calculating the ventilation area in conjunction with the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the mechanism control structure of the shutter device which can maintain the straight wind direction and is convenient for calculating the ventilation area (including a partial enlarged schematic diagram, in which the rack block is meshed with the first gear on the left);

[0014] Figure 2 yes Figure 1 The enlarged schematic diagram shows the structure of the electromagnetic latch moving upward and the pin extending downward;

[0015] Figure 3 It is a schematic diagram of the mechanism control structure of the shutter device which can maintain the straight wind direction and is convenient for calculating the ventilation area (including a partial enlarged schematic diagram in which the rack block is disengaged from the first gear on the left side).

[0016] In the figure: 1 is a blade, 2 is a servo motor, 3 is a lead screw, 4 is a guide rod, 5 is a rack block, 6 is a shaft rod, 7 is a gear, 8 is a tooth, 9 is a full opening hole, 10 is a full closing pin hole, 11 is an electromagnetic latch, and 12 is a pin column. DETAILED DESCRIPTION

[0017] Implementation method 1: Figure 1-3 As shown, the shutter device that can maintain a straight wind direction and is convenient for calculating the ventilation area includes a window frame (not shown in the figure), a blade 1, a servo motor 2, a PLC controller (not shown in the figure), a lead screw 3, a guide rod 4 and a rack block 5. Each blade 1 is provided with a shaft rod 6 at the center, and a gear 7 is coaxially fixed at one end of each shaft rod 6. A threaded through hole and a guide hole are opened on the rack block 5. The lead screw 3 and the guide rod 4 are arranged in parallel on one side of each gear and are respectively penetrated in the threaded through hole and the guide hole. The lead screw 3 is driven by the servo motor 2, and the servo motor 2 is electrically connected to the PLC controller and controlled by the PLC controller. The side of the rack block 5 facing the gear 7 is provided with teeth 8 that can mesh with the gear 7. It is characterized in that: the side length of the teeth 8 of the rack block 5 is equal to one-fourth of the circumference of the gear 7, each gear 7 is provided with a full opening hole 9 and a full closing pin hole 10 respectively, and is equipped with an electromagnetic latch 11, and each electromagnetic latch 11 is provided with a pin column 12 controlled by electromagnetics (see CN 104076701 B locks the electromagnetic latch locking head in the telescopic mechanism), the axis lines of the full-opening hole 9 and the full-closing pin hole 10 on each gear 7 are located on the concentric circumferential surface of the axis line of the gear 7, and the plane passing through the axis line of the full-opening hole 9 and the axis line of the gear 7 on each gear 7 is perpendicular to the plane passing through the axis line of the full-closing pin hole 10 and the axis line of the gear 7. All electromagnetic latches 11 are equipped with corresponding codes, and their electromagnetic coils (not shown in the figure) are electrically connected to the PLC controller and controlled by the PLC controller. The two ends of the screw 3 are respectively provided with a full-closing stop point and a full-open stop point (that is, the travel stop points of the rack blocks 5 at both ends of the screw 3).

[0018] Under the control of the PLC controller, when the rack block 5 is located at the fully closed stop point, all blades 1 are in a closed state, and the pins 12 of all electromagnetic latches 11 are inserted into the fully closed pin holes 10 on the corresponding gear 7. Similarly, when the rack block 5 is located at the fully open stop point, all blades 1 are in an open state, and the pins 12 of all electromagnetic latches 11 are inserted into the fully open holes 9 on the corresponding gear 7.

[0019] During the process of the screw 3 driving the rack block 5 to move from the fully closed stop point to the fully open stop point, when the rack block 5 moves to the position where the front tooth 8 contacts a certain gear 7, the servo motor 2 stops, the electromagnetic latch 11 corresponding to the gear 7 is energized, and its pin 12 retracts. Figure 1 Then the servo motor 2 is started again, and drives the gear 7 through the rack block 5, and drives the corresponding blade 1 to fully open through the gear 7. When the rack block 5 moves forward to the position where the tooth 8 behind it is disengaged from the corresponding gear 7, the electromagnetic latch 11 corresponding to the gear 7 loses power, and its pin 12 moves down and inserts into the full opening hole 9 of the corresponding gear 7 under the action of its own gravity or gravity and a reset spring (if any).

[0020] Similarly: when the screw 3 drives the rack block 5 to move from the fully open stop point to the fully closed stop point, when the rack block 5 moves to the position where the front tooth 8 contacts a certain gear 7, the servo motor 2 stops, and the electromagnetic latch 11 corresponding to the gear 7 is energized, and its pin 12 retracts. Then the servo motor 2 starts again, and drives the gear 7 through the rack block 5, and drives the corresponding blade 1 to be fully closed through the gear 7. When the rack block 5 moves forward to the position where the tooth 8 behind it is disengaged from the corresponding gear 7, the electromagnetic latch 11 corresponding to the gear 7 loses power, and its pin 12 moves downward and is inserted into the fully closed pin hole 10 of the corresponding gear 7 under the action of its own gravity or gravity and a reset spring (if any).

[0021] like Figure 2 As shown, the lower end of the pin 12 is in a hemispherical head shape, and the outer ends of the full opening hole 9 and the full closing pin hole 10 are both arranged in a trumpet-shaped pit.

[0022] Each gear 7 is respectively equipped with a photoelectric proximity switch. The light beam emitted by the photoelectric proximity switch is located on the cross section of the lead screw 3 passing through the axis of the corresponding gear 7 and is located below the running track of the rack block 5. It can sense the blocking of the light beam emitted by the passing rack block 5. All photoelectric proximity switches are equipped with the same coding as the electromagnetic plug 11 matched with the corresponding gear 7, and are electrically connected to the PLC controller and controlled by the PLC controller. When a photoelectric proximity switch senses that the light beam it emits is blocked by the rack block 5, the corresponding electromagnetic plug 11 is energized and its pin 12 is retracted.

Claims

1. A shutter device capable of maintaining a straight wind direction and facilitating calculation of ventilation area, comprising a window frame, blades, a servo motor, a PLC controller, a lead screw, a guide rod and a rack block, wherein a shaft rod is provided at the center of each blade, a gear is coaxially fixed at one end of each shaft rod, a threaded through hole and a guide hole are provided on the rack block, the lead screw and the guide rod are arranged in parallel on one side of each gear, and are respectively inserted into the threaded through hole and the guide hole, the lead screw is driven by a servo motor, the servo motor is electrically connected to the PLC controller and is controlled by the PLC controller, the rack block is provided with teeth that can mesh with the gear on the side facing the gear, and is characterized in that: The side length of the teeth of the rack block is equal to one-fourth of the circumference of the gear. Each gear is provided with a full-opening hole and a full-closing pin hole, respectively, and is equipped with an electromagnetic latch. Each electromagnetic latch is provided with an electromagnetically controlled pin column. The axis lines of the full-opening hole and the full-closing pin hole on each gear are located on the concentric circumferential surface of the axis line of the gear, and the plane passing through the axis line of the full-opening hole and the axis line of the gear on each gear is perpendicular to the plane passing through the axis line of the full-closing pin hole and the axis line of the gear. All electromagnetic latches are equipped with corresponding codes, and their electromagnetic coils are electrically connected to the PLC controller and controlled by the PLC controller. Both ends of the lead screw are provided with full-closing stop points and full-opening stop points, respectively. Under the control of the PLC controller, when the rack block (5) is at the fully closed stop point, all blades are in the closed state, and the pins of all electromagnetic latches are inserted into the fully closed pin holes on the corresponding gears. Similarly, when the rack block is at the fully open stop point, all blades are in the open state, and the pins of all electromagnetic latches are inserted into the fully open holes on the corresponding gears. During the process of the rack block driven by the lead screw to move from the fully closed stop point to the fully open stop point, when the rack block moves to the position where the front tooth contacts a certain gear, the servo motor stops, the electromagnetic latch corresponding to the gear is energized, and its pin retracts. Then the servo motor starts again and drives the gear through the rack block, and drives the corresponding blade to fully open through the gear. When the rack block moves forward to the position where the rear tooth of the rack block is out of mesh with the corresponding gear, the electromagnetic latch corresponding to the gear loses power, and its pin moves downward and inserts into the fully open hole of the corresponding gear under the action of its own weight or gravity and a reset spring. Similarly: when the lead screw drives the rack block to move from the fully open stop point to the fully closed stop point, when the rack block runs to the position where the front tooth contacts a certain gear, the servo motor stops, the electromagnetic plug corresponding to the gear is energized, and its pin retracts. Then the servo motor starts again, and drives the gear through the rack block, and drives the corresponding blade to be fully closed through the gear. When the rack block moves forward to the position where the tooth behind it is disengaged from the corresponding gear, the electromagnetic plug corresponding to the gear loses power, and its pin moves down and is inserted into the fully closed pin hole of the corresponding gear under the action of gravity or gravity and a reset spring.

2. The shutter device capable of maintaining a straight wind direction and facilitating calculation of ventilation area according to claim 1, characterized in that: The lower end of the pin is in a hemispherical head shape, and the outer ends of the full opening hole and the full closing pin hole are both arranged in a trumpet-shaped pit.

3. The shutter device capable of maintaining a straight wind direction and facilitating calculation of ventilation area according to claim 1, characterized in that: Each gear is equipped with a photoelectric proximity switch. The light beam emitted by the photoelectric proximity switch is located on the cross section of the lead screw passing through the axis of the corresponding gear and below the running track of the rack block. It can sense the blocking of the light beam emitted by the passing rack block. All photoelectric proximity switches are equipped with the same coding as the electromagnetic plug matched with the corresponding gear, and are electrically connected to the PLC controller and controlled by the PLC controller. Under the control of the PLC controller, when a photoelectric proximity switch senses that the light beam it emits is blocked by the rack block, the corresponding electromagnetic plug is energized and its pin is retracted.

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