Assembly type smoke prevention and exhaust air pipe numerical control precise operation device and use method

Abstract

The invention relates to the technical field of building of smoke prevention and exhaust air ducts, and discloses an assembly type smoke prevention and exhaust air duct numerical control precise operation device and a using method.The assembly type smoke prevention and exhaust air duct numerical control precise operation device comprises a numerical control trolley, a lifting assembly, an X-axis adjusting assembly and a Y-axis adjusting assembly; a supporting frame is fixedly mounted on the side face of the lifting block, a moving plate is horizontally and slidably mounted on the supporting frame through an X-axis adjusting assembly, and a mounting plate is horizontally and slidably mounted on the moving plate through a Y-axis adjusting assembly. According to the device, when the smoke prevention and exhaust air pipe is installed, the smoke prevention and exhaust air pipe is fixed in a suction cup negative pressure adsorption mode, a traditional clamping mechanism is replaced, the adsorption force can be accurately controlled, air pipe deformation caused by too large clamping force is effectively avoided, and the later use performance of the air pipe is guaranteed; through mutual cooperation of the lifting assembly, the X-axis adjusting assembly and the Y-axis adjusting assembly, the smoke prevention and exhaust air pipe can be accurately adjusted in the X-axis direction, the Y-axis direction and the Z-axis direction.

Description

Technical Field

[0001] The present invention relates to the technical field of smoke exhaust duct construction, and in particular to a numerically controlled precision operation device for assembled smoke exhaust ducts and a method for using the device. Background Art

[0002] With the continuous development of the construction industry, complex and large-space buildings such as large commercial complexes, gymnasiums, exhibition halls, etc. are increasing. In such buildings, the smoke control and exhaust system is a key facility to ensure fire safety. Its installation quality is directly related to the life safety and property loss of personnel in the event of a fire. During the installation of the assembled smoke control and exhaust duct, a support device is required to accurately control the position of the smoke control and exhaust branch pipes, which is used to locate and install the smoke control and exhaust duct.

[0003] In the existing technology, the smoke and exhaust duct is installed on the supporting device through a clamping mechanism. However, when clamping and fixing the smoke and exhaust duct, the size of the clamping force cannot be accurately controlled. When the clamping force is too large, the shape of the smoke and exhaust duct may be deformed, affecting the later use of the smoke and exhaust duct. Summary of the Invention

[0004] In order to make up for the above shortcomings, the present invention provides an assembled CNC precision operation device and usage method for the smoke and exhaust air duct, which solves the problem in the prior art that when the smoke and exhaust air duct is clamped and fixed, the shape of the smoke and exhaust air duct will be deformed when the clamping force is too large.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: an assembled CNC precision operation device for smoke exhaust duct, comprising a CNC trolley, a lifting assembly, an X-axis adjustment assembly and a Y-axis adjustment assembly, wherein a support column is fixedly mounted on the upper surface of the CNC trolley, a lifting block is mounted on the support column via the lifting assembly, a support frame is fixedly mounted on the side of the lifting block, a movable plate is mounted on the support frame for horizontal sliding via the X-axis adjustment assembly, and a mounting plate is mounted on the movable plate for horizontal sliding via the Y-axis adjustment assembly;

[0006] The upper surface of the mounting plate is symmetrically fixed with mounting columns, and cylindrical grooves are provided on the upper ends of the two mounting columns. Suction cups connected to the cylindrical grooves are fixedly installed on the upper ends of the two mounting columns. A rectangular tube is fixedly installed on the mounting plate, and connecting pipes are fixedly connected to both side surfaces of the rectangular tube. One end of the two connecting pipes is respectively connected to the two mounting columns and connected to the inside of the cylindrical groove. An exhaust component for extracting air from the inside of the cylindrical groove is provided in the rectangular tube.

[0007] Preferably, the vacuum assembly comprises a sealing plate sealingly and slidingly mounted in the rectangular tube and a numerically controlled cylinder fixedly mounted on the mounting plate, wherein the output end of the numerically controlled cylinder is fixedly connected to the sealing plate.

[0008] Preferably: the X-axis adjustment assembly includes two strip rods symmetrically fixedly installed on the lower surface of the movable plate, an X-axis electric control cylinder fixedly installed on the side of the support frame and a connecting block fixedly installed on the lower surface of the movable plate, and the upper surface of the support frame is symmetrically provided with movable grooves, and the two strip rods slide horizontally in the two movable grooves respectively, and the output end of the X-axis electric control cylinder is fixedly connected to the connecting block, and the longitudinal sections of the two movable grooves are both isosceles trapezoids.

[0009] Preferably: the Y-axis adjustment assembly includes a Y-axis electric-controlled cylinder and a supporting component fixedly mounted on the side of the movable plate, the output end of the Y-axis electric-controlled cylinder is fixedly connected to the side of the mounting plate, and the supporting component is used to slidably connect the movable plate and the mounting plate.

[0010] Preferably, the supporting component comprises two supporting rails symmetrically fixedly mounted on the upper surface of the movable plate and two sliding seats respectively slidably sleeved on the two supporting rails, and the mounting plate is fixedly mounted on the two sliding seats.

[0011] Preferably, support plates are symmetrically fixedly mounted on the mounting plate, and the two mounting posts are located between the two support plates.

[0012] Preferably: the lifting assembly includes a U-shaped frame that slides vertically on the support column through a lifting component, a first threaded rod that is vertically rotatably installed on the side of the U-shaped frame, and a first CNC motor that is fixedly installed on the upper end of the U-shaped frame. A lifting groove is opened on the side of the U-shaped frame, the first threaded rod is vertically rotatably installed in the lifting groove, the lifting block is threadedly sleeved on the first threaded rod and slides in the lifting groove, and the output end of the first CNC motor is fixedly connected to the upper end of the first threaded rod.

[0013] Preferably, rectangular slots are provided on both sides of the support column, and both ends of the U-shaped frame are vertically slidably inserted into the two rectangular slots.

[0014] Preferably: a rectangular groove is provided at the upper end of the support column, and the inner walls of the two rectangular slots are provided with strip holes connected to the rectangular grooves, the lifting component includes a second threaded rod vertically rotatably installed in the rectangular groove, a connecting block threadedly sleeved on the second threaded rod, a fixing frame fixedly installed on the upper end of the support column and a second CNC motor fixedly installed on the fixing frame, the output end of the second CNC motor is fixedly connected to the upper end of the second threaded rod, the two ends of the connecting block are respectively slidably inserted into the two strip holes, and the two ends are respectively fixedly connected to the two ends of the U-shaped frame.

[0015] Preferably, a CNC control panel is fixedly mounted on the side of the support column, and the CNC control panel is used to control the CNC trolley, CNC cylinder, X-axis electric cylinder, Y-axis electric cylinder, the first CNC motor and the second CNC motor.

[0016] A method for using a numerically controlled precision operation device for an assembled smoke exhaust duct comprises the following steps:

[0017] Step S1: Use a CNC trolley to move the entire device to a designated location where the smoke exhaust duct needs to be installed;

[0018] Step S2: The smoke exhaust duct is placed on the two support plates of the mounting plate. The lower surface of the duct is pressed into contact with the two suction cups, and the suction cups are deformed due to the pressing to ensure the sealing between the duct and the suction cups.

[0019] Step S3: Start the air extraction component and control the CNC cylinder to work through the CNC control panel. The output end drives the sealing plate to slide in the rectangular tube, and extracts air from the cylindrical groove of the mounting column through the connecting pipe, so that negative pressure is formed between the suction cup and the air duct, and the air duct is stably adsorbed on the mounting plate;

[0020] Step S4: Accurately adjust the position:

[0021] Z-axis height adjustment: The CNC control panel controls the first CNC motor to rotate the first threaded rod, causing the lifting block to move vertically along the lifting slot of the U-shaped frame to initially adjust the air duct height. The second CNC motor controls the second threaded rod to rotate, which, through the connecting block, drives the U-shaped frame to move vertically along the rectangular slot of the support column to achieve further adjustment and precise control of the air duct height.

[0022] X-axis direction adjustment: Control the extension and retraction of the X-axis electric cylinder, drive the movable plate to slide horizontally along the movable slot of the support frame through the connecting block, and adjust the position of the air duct in the X-axis direction;

[0023] Y-axis direction adjustment: Control the extension and contraction of the Y-axis electric cylinder to drive the mounting plate to slide horizontally along the support rail of the movable plate through the sliding seat to adjust the position of the air duct in the Y-axis direction;

[0024] Step S5: After the air duct is precisely docked with the adjacent air duct through the above adjustment, it is assembled and fixed; after completion, the CNC cylinder is started in the reverse direction to release the negative pressure adsorption of the suction cup, and the CNC trolley is operated to remove the device to complete the single installation operation.

[0025] The present invention has the following beneficial effects:

[0026] 1. In the present invention, when installing the smoke exhaust duct, the suction cup negative pressure adsorption method is used to fix the smoke exhaust duct, replacing the traditional clamping mechanism. The adsorption force can be accurately controlled, effectively avoiding the deformation of the duct caused by excessive clamping force, and ensuring the performance of the duct in the later use.

[0027] 2、The present application, in the installation of smoke exhaust pipe, can be precisely adjusted in X, Y, Z three-axis direction through the cooperation of the lifting assembly, the X-axis adjusting assembly and the Y-axis adjusting assembly, so that the adjacent two smoke exhaust pipes can be precisely butt-jointed, thereby facilitating assembly and improving assembly efficiency.

[0028] 3、The present application, in the installation of smoke exhaust pipe, can be precisely adjusted in X, Y, Z three-axis direction through the cooperation of the lifting assembly, the X-axis adjusting assembly and the Y-axis adjusting assembly, so that the adjacent two smoke exhaust pipes can be precisely butt-jointed, thereby facilitating assembly and improving assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0030] Figure 2 is a schematic diagram of the structure of the suction cup in the present application;

[0031] Figure 3 is a schematic diagram of the three-dimensional structure of the present application; Figure 2

[0032] Figure 4 is a schematic diagram of the X-axis adjusting assembly structure in the present application;

[0033] Figure 5 is a schematic diagram of the three-dimensional local cross-section structure of the air extraction assembly in the present application;

[0034] Figure 6 is a schematic diagram of the three-dimensional structure of the lifting assembly in the present application;

[0035] Figure 7 is a schematic diagram of the three-dimensional structure of the U-shaped frame in the present application;

[0036] Figure 8 is a schematic diagram of the three-dimensional structure of the support column in the present application.

[0037] LEGEND:

[0038] 1, numerical control trolley; 2, support column; 3, lifting block; 4, support frame; 5, moving plate; 6, mounting plate; 7, mounting column; 8, suction cup; 9, rectangular cylinder; 10, connecting pipe; 11, support plate; 12, sealing plate; 13, numerical control cylinder; 14, X-axis electric control cylinder; 15, connecting block; 16, Y-axis electric control cylinder; 17, support rail; 18, sliding seat; 19, rectangular clamping groove; 20, U-shaped frame; 21, first threaded rod; 22, first numerical control motor; 23, rectangular groove; 24, strip-shaped hole; 25, second threaded rod; 26, link block; 27, fixed frame; 28, second numerical control motor; 29, numerical control control panel; 30, lifting groove; 31, moving groove; 32, strip-shaped rod.​ DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] Example 1, reference Figure 1-5 A CNC precision operation device for assembled smoke exhaust ducts includes a CNC trolley 1, a lifting assembly, an X-axis adjustment assembly, and a Y-axis adjustment assembly. A support column 2 is fixedly installed on the upper surface of the CNC trolley 1. A lifting block 3 is installed on the support column 2 through the lifting assembly. A support frame 4 is fixedly installed on the side of the lifting block 3. A movable plate 5 is installed on the support frame 4 for horizontal sliding through the X-axis adjustment assembly. A mounting plate 6 is installed on the movable plate 5 for horizontal sliding through the Y-axis adjustment assembly; mounting columns 7 are symmetrically fixed on the upper surface of the mounting plate 6. The upper ends of the two mounting columns 7 are both provided with cylindrical grooves. The upper ends of the two mounting columns 7 are fixed. A suction cup 8 connected to the cylindrical groove is installed, and a rectangular tube 9 is fixedly installed on the mounting plate 6. Connecting pipes 10 are fixedly connected to both sides of the rectangular tube 9. One end of the two connecting pipes 10 is connected to the two mounting columns 7 respectively and is connected to the inside of the cylindrical groove. An exhaust assembly for extracting the air inside the cylindrical groove is provided in the rectangular tube 9; the suction cup 8 cooperates with the exhaust assembly to achieve negative pressure adsorption and fixation of the air duct, replacing the traditional clamping method to avoid deformation of the air duct; at the same time, the coordination of the lifting assembly, the X-axis adjustment assembly and the Y-axis adjustment assembly provides a structural basis for the precise positioning and docking of the air duct, facilitating subsequent assembly;

[0041] The air extraction assembly includes a sealing plate 12 that is sealingly and slidingly mounted in the rectangular tube 9 and a numerically controlled cylinder 13 that is fixedly mounted on the mounting plate 6. The output end of the numerically controlled cylinder 13 is fixedly connected to the sealing plate 12. The numerically controlled cylinder 13 drives the sealing plate 12 to slide in the rectangular tube 9 to extract the air in the cylindrical groove, so that a negative pressure is formed between the suction cup 8 and the air duct, thereby completing the stable fixation of the air duct. A support plate 11 is symmetrically fixedly mounted on the mounting plate 6, and two mounting columns 7 are located between the two support plates 11. The support plate 11 temporarily supports the air duct so that the lower surface of the air duct is in close contact with the suction cup 8, thereby ensuring the sealing between the suction cup and the air duct.

[0042] Example 2, reference Figure 1-8The X-axis adjustment assembly includes two strip rods 32 symmetrically fixedly mounted on the lower surface of the movable plate 5, an X-axis electric control cylinder 14 fixedly mounted on the side of the support frame 4, and a connecting block 15 fixedly mounted on the lower surface of the movable plate 5. A movable groove 31 is symmetrically opened on the upper surface of the support frame 4. The two strip rods 32 slide horizontally in the two movable grooves 31 respectively. The output end of the X-axis electric control cylinder 14 is fixedly connected to the connecting block 15. The longitudinal sections of the two movable grooves 31 are both isosceles trapezoidal; the movable plate 5 is driven to slide along the isosceles trapezoidal movable groove 31 of the support frame 4 through the extension and contraction of the X-axis electric control cylinder 14, so as to realize the horizontal position adjustment of the air duct in the X-axis direction; the isosceles trapezoidal movable groove 31 cooperates with the strip rod 32 to prevent it from falling off during sliding;

[0043] The Y-axis adjustment assembly includes a Y-axis electric-controlled cylinder 16 fixedly mounted on the side of the movable plate 5 and a support component. The output end of the Y-axis electric-controlled cylinder 16 is fixedly connected to the side of the mounting plate 6. The support component is used to slidably connect the movable plate 5 and the mounting plate 6. The mounting plate 6 is driven to move by the Y-axis electric-controlled cylinder 16, and the support component assists in sliding to achieve horizontal position adjustment of the air duct in the Y-axis direction; the support component includes two support rails 17 symmetrically fixedly mounted on the upper surface of the movable plate 5 and two sliding seats 18 respectively slidably mounted on the two support rails 17. The mounting plate 6 is fixedly mounted on the two sliding seats 18, and slides along the support rails 17 through the sliding seats 18 to provide stable support and guidance for the Y-axis movement of the mounting plate 6;

[0044] The lifting assembly includes a U-shaped frame 20 that slides vertically on the support column 2 through a lifting component, a first threaded rod 21 that is vertically rotatably installed on the side of the U-shaped frame 20, and a first CNC motor 22 that is fixedly installed on the upper end of the U-shaped frame 20. A lifting slot 30 is provided on the side of the U-shaped frame 20, and the first threaded rod 21 is vertically rotatably installed in the lifting slot 30. The lifting block 3 is threadedly sleeved on the first threaded rod 21 and slides in the lifting slot 30. The output end of the first CNC motor 22 is fixedly connected to the upper end of the first threaded rod 21. The first threaded rod 21 is driven to rotate by the first CNC motor 22, driving the lifting block 3 to slide along the lifting slot 30 to achieve preliminary height adjustment of the air duct in the Z-axis direction; rectangular slots 19 are provided on both sides of the support column 2, and the two ends of the U-shaped frame 20 are respectively inserted into the two rectangular slots 19 for vertical sliding, limiting the two ends of the U-shaped frame 20 to slide in the slots, providing guidance and limit for the vertical movement of the U-shaped frame 20, and preventing the U-shaped frame 20 from lateral displacement during the lifting process. The second threaded rod 25 is driven by the second CNC motor 28 to rotate, and the U-shaped frame 20 is driven by the second CNC motor 28 to rotate, thereby expanding the Z-axis height adjustment range and further increasing the height by adjusting the first threaded rod 21 to meet the installation requirements of different floors.

[0045] A CNC control panel 29 is fixedly installed on the side of the support column 2. The CNC control panel 29 is used to control the CNC trolley 1, CNC cylinder 13, X-axis electric cylinder 14, Y-axis electric cylinder 16, the first CNC motor 22 and the second CNC motor 28. The CNC control panel 29 centrally controls the CNC trolley 1, CNC cylinder 13, each electric cylinder and CNC motor to achieve automated and precise control of all actions of the device. Unified control improves operational convenience and reduces manual intervention errors; accurately controls the operating parameters of each component (such as adsorption force, adjustment distance), reduces installation errors, significantly reduces air duct leakage rate, and improves installation quality and efficiency.

[0046] In order to further better explain the above embodiment, the present invention also provides a method for using an assembled smoke exhaust duct numerical control precision operation device. When using this device to install the smoke exhaust duct, the specific steps are as follows:

[0047] Step S1: Use the CNC trolley 1 to move the entire device to the designated location where the smoke exhaust duct needs to be installed to facilitate subsequent operations;

[0048] Step S2: Place the smoke exhaust duct on the two support plates 11 of the mounting plate 6. The lower surface of the duct is in contact with the two suction cups 8. The suction cups 8 deform due to the compression, ensuring a tight seal with the duct (the support plates 11 are higher than the mounting posts 7 and lower than the suction cups 8, acting as a temporary support).

[0049] Step S3: Start the air extraction component and control the CNC cylinder 13 to work through the CNC control panel 29. The output end of the CNC cylinder drives the sealing plate 12 to slide in the rectangular tube 9. The air in the cylindrical groove of the mounting column 7 is extracted through the connecting tube 10, so that a negative pressure is formed between the suction cup 8 and the air duct, and the air duct is stably adsorbed on the mounting plate 6 to prevent deformation of the air duct during the fixing process.

[0050] Step S4: Accurately adjust the position:

[0051] Z-axis height adjustment: The first CNC motor 22 is controlled by the CNC control panel 29 to rotate the first threaded rod 21, causing the lifting block 3 to move vertically along the lifting slot 30 of the U-shaped frame 20 to initially adjust the air duct height. The second CNC motor 28 is controlled to rotate the second threaded rod 25, which, through the connecting block 26, drives the U-shaped frame 20 to move vertically along the rectangular slot 19 of the support column 2, achieving further adjustment and precise control of the air duct height.

[0052] X-axis direction adjustment: Control the extension and retraction of the X-axis electric cylinder 14, and drive the movable plate 5 to slide horizontally along the movable groove 31 of the support frame 4 (matching the strip rod 32) through the connecting block 15 to adjust the position of the air duct in the X-axis direction;

[0053] Y-axis direction adjustment: Control the extension and contraction of the Y-axis electric cylinder 16, driving the mounting plate 6 to slide horizontally along the support rail 17 of the movable plate 5 through the sliding seat 18, thereby adjusting the position of the air duct in the Y-axis direction;

[0054] Step S5: After the air duct is precisely docked with the adjacent air duct through the above adjustment, it is assembled and fixed; after completion, the CNC cylinder 13 is started in reverse to release the negative pressure adsorption of the suction cup 8, and the CNC trolley 1 is operated to move the device to complete a single installation operation.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A CNC precision operation device for an assembled smoke exhaust duct, comprising a CNC trolley (1), a lifting assembly, an X-axis adjustment assembly, and a Y-axis adjustment assembly, characterized in that: A support column (2) is fixedly mounted on the upper surface of the CNC trolley (1); a lifting block (3) is mounted on the support column (2) via a lifting assembly; a support frame (4) is fixedly mounted on the side of the lifting block (3); a movable plate (5) is mounted on the support frame (4) in a horizontally slidable manner via an X-axis adjustment assembly; and a mounting plate (6) is mounted on the movable plate (5) in a horizontally slidable manner via a Y-axis adjustment assembly; The upper surface of the mounting plate (6) is symmetrically fixed with mounting columns (7), and cylindrical grooves are provided at the upper ends of the two mounting columns (7). Suction cups (8) connected to the cylindrical grooves are fixedly installed at the upper ends of the two mounting columns (7). A rectangular tube (9) is fixedly installed on the mounting plate (6), and connecting pipes (10) are fixedly connected to both sides of the rectangular tube (9). One end of the two connecting pipes (10) is respectively connected to the two mounting columns (7) and is connected to the inside of the cylindrical groove. An exhaust component for extracting air from the inside of the cylindrical groove is provided in the rectangular tube (9).

2. The CNC precision operation device for an assembled smoke exhaust duct according to claim 1 is characterized in that: The vacuum assembly comprises a sealing plate (12) sealingly and slidingly mounted in the rectangular cylinder (9) and a numerically controlled cylinder (13) fixedly mounted on the mounting plate (6), wherein the output end of the numerically controlled cylinder (13) is fixedly connected to the sealing plate (12).

3. The CNC precision operation device for an assembled smoke exhaust duct according to claim 1 is characterized in that: The X-axis adjustment assembly comprises two strip rods (32) symmetrically fixedly mounted on the lower surface of the movable plate (5), an X-axis electric control cylinder (14) fixedly mounted on the side of the support frame (4), and a connecting block (15) fixedly mounted on the lower surface of the movable plate (5). The upper surface of the support frame (4) is symmetrically provided with movable grooves (31). The two strip rods (32) slide horizontally in the two movable grooves (31) respectively. The output end of the X-axis electric control cylinder (14) is fixedly connected to the connecting block (15). The longitudinal sections of the two movable grooves (31) are both isosceles trapezoids.

4. The CNC precision operation device for an assembled smoke exhaust duct according to claim 1 is characterized in that: The Y-axis adjustment assembly comprises a Y-axis electric-controlled cylinder (16) fixedly mounted on the side of the movable plate (5) and a supporting component, wherein the output end of the Y-axis electric-controlled cylinder (16) is fixedly connected to the side of the mounting plate (6), and the supporting component is used for slidingly connecting the movable plate (5) and the mounting plate (6).

5. The CNC precision operation device for an assembled smoke exhaust duct according to claim 4 is characterized in that: The supporting component comprises two supporting rails (17) symmetrically fixedly mounted on the upper surface of the movable plate (5) and two sliding seats (18) respectively slidably sleeved on the two supporting rails (17), and the mounting plate (6) is fixedly mounted on the two sliding seats (18).

6. The CNC precision operation device for an assembled smoke exhaust duct according to claim 5 is characterized in that: A support plate (11) is symmetrically fixedly mounted on the mounting plate (6), and the two mounting columns (7) are located between the two support plates (11).

7. The CNC precision operation device for an assembled smoke exhaust duct according to claim 1 is characterized in that: The lifting assembly comprises a U-shaped frame (20) that vertically slides on a support column (2) through a lifting component, a first threaded rod (21) that is vertically rotatably mounted on a side of the U-shaped frame (20), and a first numerical control motor (22) that is fixedly mounted on an upper end of the U-shaped frame (20), a lifting groove (30) is provided on a side of the U-shaped frame (20), the first threaded rod (21) is vertically rotatably mounted in the lifting groove (30), the lifting block (3) is threadedly sleeved on the first threaded rod (21) and slides in the lifting groove (30), and an output end of the first numerical control motor (22) is fixedly connected to the upper end of the first threaded rod (21).

8. The CNC precision operation device for an assembled smoke exhaust duct according to claim 7, characterized in that: Rectangular slots (19) are provided on both sides of the support column (2), and the two ends of the U-shaped frame (20) are respectively inserted into the two rectangular slots (19) in a vertically sliding manner; A rectangular groove (23) is provided at the upper end of the support column (2), and a strip hole (24) communicating with the rectangular groove (23) is provided on the inner wall of the two rectangular slots (19). The lifting component comprises a second threaded rod (25) vertically rotatably mounted in the rectangular groove (23), a connecting block (26) threadedly sleeved on the second threaded rod (25), a fixing frame (27) fixedly mounted on the upper end of the support column (2), and a second numerical control motor (28) fixedly mounted on the fixing frame (27). The output end of the second numerical control motor (28) is fixedly connected to the upper end of the second threaded rod (25), and the two ends of the connecting block (26) are respectively slidably inserted into the two strip holes (24), and the two ends are respectively fixedly connected to the two ends of the U-shaped frame (20).

9. The CNC precision operation device for an assembled smoke exhaust duct according to claim 8, characterized in that: A numerical control control panel (29) is fixedly mounted on the side of the support column (2), and the numerical control control panel (29) is used to control the numerical control trolley (1), the numerical control cylinder (13), the X-axis electric control cylinder (14), the Y-axis electric control cylinder (16), the first numerical control motor (22), and the second numerical control motor (28).

10. A method for using a numerically controlled precision operation device for an assembled smoke exhaust duct, comprising the numerically controlled precision operation device for an assembled smoke exhaust duct according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step S1: Using a numerically controlled trolley (1), the entire device is moved to a designated location where a smoke exhaust duct needs to be installed; Step S2: placing the smoke exhaust duct on the two support plates (11) of the mounting plate (6), wherein the lower surface of the duct is in contact with the two suction cups (8) under pressure, and the suction cups (8) are deformed due to the pressure, thereby ensuring the sealing between the duct and the suction cups; Step S3: Start the air extraction component and control the CNC cylinder (13) to work through the CNC control panel (29). The output end of the CNC cylinder (13) drives the sealing plate (12) to slide in the rectangular tube (9). The air in the cylindrical groove of the mounting column (7) is extracted through the connecting tube (10), so that a negative pressure is formed between the suction cup (8) and the air duct, and the air duct is stably adsorbed on the mounting plate (6). Step S4: Accurately adjust the position: Z-axis height adjustment: the first CNC motor (22) is controlled by the CNC control panel (29) to drive the first threaded rod (21) to rotate, so that the lifting block (3) moves vertically along the lifting slot (30) of the U-shaped frame (20), and the height of the air duct is preliminarily adjusted; the second CNC motor (28) is controlled to drive the second threaded rod (25) to rotate, and the U-shaped frame (20) is driven to move vertically along the rectangular slot (19) of the support column (2) through the connecting block (26), so as to achieve further adjustment and precise control of the height of the air duct; X-axis direction adjustment: control the extension and contraction of the X-axis electric control cylinder (14), drive the movable plate (5) to slide horizontally along the movable groove (31) of the support frame (4) through the connecting block (15), and adjust the position of the air duct in the X-axis direction; Y-axis direction adjustment: control the extension and contraction of the Y-axis electric control cylinder (16), drive the mounting plate (6) to slide horizontally along the support rail (17) of the movable plate (5) through the sliding seat (18), and adjust the position of the air duct in the Y-axis direction; Step S5: After the air duct is precisely docked with the adjacent air duct through the above adjustment, it is assembled and fixed; after completion, the CNC cylinder (13) is started in the reverse direction to release the negative pressure adsorption of the suction cup (8), and the CNC trolley (1) is operated to move the device away to complete the single installation operation.

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