Spray head adjusting structure

Abstract

The utility model belongs to the technical field of spraying robots, and discloses a spray head adjusting structure which comprises a fixed seat, a displacement adjusting part, a connecting beam, an angle adjusting part and a spray head assembly. The connecting beam is connected with the fixed seat through the displacement adjusting part, the connecting beam is perpendicular to a sprayed part, the angle adjusting part is arranged at one end of the connecting beam, and the angle adjusting part is in transmission connection with the spray head assembly; the displacement adjusting part is used for driving the connecting beam to linearly move in the direction perpendicular to the fixed seat, so that the distance between the spray head assembly and the sprayed part is adjusted; the angle adjusting component is used for adjusting the included angle between the spray head assembly and the connecting beam. According to the spray head adjusting structure, through the displacement adjusting component and the angle adjusting component, adjustment of the distance and the angle between the spray head assembly and a sprayed part is achieved, spraying can be conducted on different structures, and it is guaranteed that sprayed coatings are uniform and consistent.

Description

Technical Field

[0001] The utility model belongs to the technical field of spraying robots, and particularly relates to a spray head regulating structure. Background Art

[0002] After the building wall is formed, decorative paint needs to be sprayed on the outer wall of the wall. In the existing spraying method, many construction scenes are to build scaffolding to facilitate construction, or require manual suspension for operation. The former has high construction costs and will have a great impact on the normal life in the building. The latter makes it difficult to guarantee the personal safety of construction workers.

[0003] At present, there are also some exterior wall spraying robots that can realize automatic spraying of exterior walls. However, in the process of spraying the exterior walls of buildings, there are some wall structures, for example, the corners of the wall, where the spraying quality cannot be guaranteed during the automatic spraying process. Utility Model Content

[0004] In view of the above problems, the utility model provides a nozzle adjustment structure, which adopts the following technical solutions:

[0005] A nozzle adjustment structure comprises a fixing seat, a displacement adjustment component, a connecting beam, an angle adjustment component and a nozzle assembly;

[0006] Wherein, the connecting beam is connected to the fixing seat through the displacement adjusting component, the connecting beam is perpendicular to the sprayed part, the angle adjusting component is arranged at one end of the connecting beam, and the angle adjusting component is transmission-connected to the spray head assembly;

[0007] The displacement adjustment component is used to drive the connecting beam to move linearly in a direction perpendicular to the fixing seat, so as to adjust the distance between the nozzle assembly and the sprayed part;

[0008] The angle adjustment component is used to adjust the angle between the nozzle assembly and the connecting beam.

[0009] Furthermore, the displacement adjustment component includes a first motor, a first gear, a rack, a slider and a linear slide rail;

[0010] Among them, the first motor is fixedly connected to the middle part of the fixed seat, the slider is fixedly connected to the bottom of the fixed seat, the first gear is fixedly connected to the transmission shaft of the first motor, the rack is arranged on the top of the connecting beam and meshes with the first gear, the linear slide rail is arranged on a side of the connecting beam close to the fixed seat, and the slider is slidably connected to the linear slide rail.

[0011] Furthermore, the displacement adjustment component also includes two limit plates and two proximity switches, the two limit plates are respectively arranged at both ends of the linear slide rail and fixedly connected to the connecting beam, and the two proximity switches are respectively arranged on both sides of the slider and fixedly connected to the fixing seat.

[0012] Furthermore, the fixing seat includes a connecting plate, a supporting plate and a first bracket;

[0013] Among them, the connecting plate is fixedly connected to the top of the supporting plate, the sliding block is fixedly connected to the bottom of the supporting plate close to the side of the connecting beam, the supporting plate is provided with an avoidance hole above the sliding block, the first bracket is connected to a side of the supporting plate away from the connecting beam, the first motor and the first gear are located in the avoidance hole, and the first motor is fixedly connected to the first bracket.

[0014] Furthermore, the fixing seat also includes a support frame and an outer shell, wherein several of the support frames are arranged on a side of the support plate away from the connecting beam, and the outer shell cover is arranged on the outside of the first bracket and several of the support frames and is connected to the connecting plate.

[0015] Furthermore, the angle adjustment component includes a support seat, a driven shaft, a second gear, a second motor, a second bracket, a third gear, a transmission belt and a connecting block;

[0016] Among them, the support seat is fixedly connected to one end of the connecting beam, one end of the driven shaft is rotatably connected to the support seat, the second gear is arranged at the other end of the driven shaft, the second motor is connected to the connecting beam through the second bracket, the third gear is fixedly connected to the transmission shaft of the second motor, the third gear is transmission-connected to the second gear through the transmission toothed belt, the connecting block is fixedly connected to the middle part of the driven shaft, and the connecting block is fixedly connected to the nozzle assembly.

[0017] Further, the nozzle assembly includes a support beam and a nozzle;

[0018] Wherein, the support beam is fixedly connected to the connection block, the support beam and the connection beam are perpendicular to each other, and a plurality of the nozzles are fixedly connected to the support beam.

[0019] Furthermore, the nozzle assembly also includes a fixing frame and a distance measuring unit. One distance measuring unit is correspondingly provided for each nozzle. The distance measuring unit is fixedly connected to the support beam via the fixing frame. The distance measuring unit is located behind the nozzle.

[0020] Furthermore, the distance measuring unit includes two laser rangefinders, the fixed frame includes plate A, plate B and plate C, one end of plate A is fixedly connected to the support beam, plate B and plate C are fixedly connected to the other end of plate A, and the two laser rangefinders are respectively connected to plate B and plate C.

[0021] Furthermore, the nozzle assembly also includes a shield and a plate D, the plate B and the plate C are both provided with folded edges, the shield is arranged on the outside of the two laser rangefinders, the shield is fixedly connected to the plates B and C, the shield is opened on one side of the nozzle, the plate D is fixedly connected to one side of the shield opening, and the plate D is provided with through holes at the positions of the two laser rangefinders.

[0022] Beneficial effects of the utility model:

[0023] 1. The nozzle adjustment structure of the utility model realizes the distance and angle adjustment between the nozzle assembly and the sprayed part through the displacement adjustment component and the angle adjustment component, and can spray different structures to ensure that the sprayed coating is uniform.

[0024] 2. The nozzle adjustment structure of the utility model is simple and practical, light in weight and easy to install and carry.

[0025] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic structural diagram of a nozzle adjustment structure according to an embodiment of the utility model is shown;

[0028] Figure 2 A schematic diagram of the installation of the displacement adjustment component, the fixing seat and the connecting beam according to an embodiment of the utility model is shown;

[0029] Figure 3 A schematic diagram of the installation of a slider and a linear slide rail according to an embodiment of the utility model is shown;

[0030] Figure 4A schematic diagram of the installation of a fixing base according to an embodiment of the utility model is shown;

[0031] Figure 5 A schematic structural diagram of an angle adjustment component according to an embodiment of the utility model is shown;

[0032] Figure 6 A schematic diagram of the installation of the angle adjustment component according to an embodiment of the utility model is shown;

[0033] Figure 7 A schematic structural diagram of a nozzle assembly according to an embodiment of the utility model is shown;

[0034] Figure 8 A schematic diagram of the installation of a housing and a shield according to an embodiment of the utility model is shown.

[0035] In the figure: 1. fixed seat; 2. displacement adjustment component; 3. connecting beam; 4. angle adjustment component; 5. nozzle assembly; 6. distance measuring unit; 7. first motor; 8. first gear; 9. rack; 10. slider; 11. linear slide rail; 12. limit plate; 13. proximity switch; 14. connecting plate; 15. support plate; 16. first bracket; 17. support frame; 18. shell; 19. avoidance hole; 20. outlet; 21. support seat; 22. driven shaft; 23. second gear; 24. second motor; 25. second bracket; 26. third gear; 27. transmission toothed belt; 28. connecting block; 29. ​​support beam; 30. nozzle; 31. fixed frame; 32. laser distance meter; 33. plate A; 34. plate B; 35. plate C; 36. shield; 37. plate D. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] It should be noted that the terms "first", "second", etc. in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so as to describe the embodiments of the present application described here.

[0038] The utility model provides a spray head adjustment structure, which can automatically adjust the displacement and angle of the spray head to meet the needs of sprayed parts with different structures, and the sprayed coating is uniform and consistent, thereby ensuring the spraying quality.

[0039] like Figure 1 As shown, a nozzle adjustment structure includes a fixing seat 1, a displacement adjustment component 2, a connecting beam 3, an angle adjustment component 4, a nozzle assembly 5, a distance measuring unit 6 and a controller (not shown in the figure). For example, the controller can adopt a PLC or a single chip microcomputer.

[0040] Among them, the nozzle adjustment structure is detachably connected to the connecting part on the spraying robot through the upper end of the fixed seat 1, and the connecting beam 3 is connected to the fixed seat 1 through the displacement adjustment component 2. The displacement adjustment component 2 is used to adjust the distance between the nozzle assembly 5 and the sprayed part. Specifically, the displacement adjustment component 2 is used to drive the connecting beam 3 to move in a straight line in a direction perpendicular to the fixed seat 1. The connecting beam 3 is perpendicular to the sprayed part. The sprayed part can be an exterior wall or other parts.

[0041] The angle adjustment component 4 is arranged at one end of the connecting beam 3, the angle adjustment component 4 is transmission-connected with the nozzle assembly 5, and the angle adjustment component 4 is used to adjust the angle between the nozzle assembly 5 and the connecting beam 3. The distance measuring unit 6 is arranged on the spraying assembly.

[0042] The controller is communicatively connected with the displacement adjustment component 2, the angle adjustment component 4, and the distance measuring unit 6. The controller is used to obtain the real-time distance between the nozzle assembly 5 and the sprayed part through the distance measuring unit 6, and adjust the position of the nozzle assembly 5 through the displacement adjustment component 2 according to the real-time distance, so that the distance between the nozzle assembly 5 and the sprayed part is maintained at the set value.

[0043] For example, when the controller determines that the real-time distance is greater than the set value, the displacement adjustment component 2 drives the nozzle assembly 5 to move toward the sprayed area. When the controller determines that the real-time distance is less than the set value, the displacement adjustment component 2 drives the nozzle assembly 5 to move away from the sprayed area.

[0044] The controller is also used to adjust the angle between the nozzle assembly 5 and the connecting beam 3 through the angle adjustment component 4 when the nozzle assembly 5 needs to spray the sprayed area with an angle, thereby adjusting the angle between the nozzle assembly 5 and the sprayed area to achieve spraying of the sprayed area with an angle.

[0045] For example, when spraying an angled area such as a wall corner, the angle of the spray head assembly 5 is adjusted by the angle adjustment component 4, thereby ensuring the spraying quality of the angled area.

[0046] The nozzle adjustment structure of the utility model can automatically adjust the distance between the nozzle assembly 5 and the sprayed part according to the distance between the nozzle assembly 5 and the sprayed part obtained in real time, thereby ensuring the uniformity of the coating; by setting the angle adjustment component 4 to adjust the angle of the nozzle assembly 5, the sprayed part with an angle can be sprayed, which broadens the use range of the spray robot and ensures the spraying quality.

[0047] For example, Figure 2 and Figure 3 As shown, the displacement adjustment component 2 includes a first motor 7, a first gear 8, a rack 9, a slider 10 and a linear slide 11, wherein the first motor 7 is fixedly connected to the middle part of the fixed seat 1, the slider 10 is fixedly connected to the bottom of the fixed seat 1, the first gear 8 is fixedly connected to the transmission shaft of the first motor 7, the rack 9 is arranged on the top of the connecting beam 3 and meshes with the first gear 8, the linear slide 11 is arranged on a side of the connecting beam 3 close to the fixed seat 1, and the slider 10 is slidably connected to the linear slide 11.

[0048] The rack 9 , the linear guide rail 11 and the connecting beam 3 are parallel to each other, and the center line of the transmission shaft of the first motor 7 and the center line of the first gear 8 are perpendicular to the transverse center line of the connecting beam 3 .

[0049] The first motor 7 is connected to the controller for communication, and the controller controls the start and stop of the first motor 7. After the fixed seat 1 is connected to the connecting part of the spraying robot, the first motor 7 drives the first gear 8 to rotate during operation, and the first gear 8 is meshed with the rack 9 for transmission. The first gear 8 drives the connecting beam 3 to move linearly, and when the connecting beam 3 moves, the linear guide rail 11 moves linearly along the slider 10. The displacement adjustment component 2 of the utility model adopts the combination of gear transmission and linear guide rail, which improves the movement accuracy and is beneficial to the precise adjustment of the distance between the nozzle assembly 5 and the sprayed part, thereby ensuring the uniformity of the coating.

[0050] For example, the displacement adjustment component 2 also includes two limit plates 12 and two proximity switches 13. The two limit plates 12 are respectively arranged at both ends of the linear slide rail 11 and are fixedly connected to the connecting beam 3. The two limit plates 12 prevent the linear slide rail 11 from falling off the slider 10. The two proximity switches 13 are respectively arranged on both sides of the slider 10 and are fixedly connected to the fixed seat 1.

[0051] Both proximity switches 13 are communicatively connected to the controller. When the connecting beam 3 moves and drives the limit plate 12 to move to the sensing surface position of the proximity switch 13, the proximity switch 13 sends a position signal to the controller. The controller controls the first motor 7 to stop running according to the position signal. The two proximity switches 13 respectively control the extreme positions on both sides of the linear slide rail 11 to prevent the first motor 7 from continuing to run after the limit plate 12 contacts the slider 10, which affects the service life of the first motor 7.

[0052] For example, Figure 4 and Figure 8 As shown, the fixing seat 1 includes a connecting plate 14, a supporting plate 15, a first bracket 16, a supporting frame 17 and a shell 18, wherein the connecting plate 14 is fixedly connected to the top of the supporting plate 15, the slider 10 is fixedly connected to the bottom of the supporting plate 15 near the side of the connecting beam 3, and two proximity switches 13 are connected to the bottom of the supporting plate 15 and are located on both sides of the slider 10.

[0053] The support plate 15 is provided with a square avoidance hole 19 above the slider 10. The first bracket 16 is detachably connected to a side of the support plate 15 away from the connecting beam 3 by bolts. The two sides of the first bracket 16 are respectively connected to the two sides of the square avoidance hole 19. The first motor 7 and the first gear 8 are located in the avoidance hole 19, thereby effectively utilizing the space. When the first gear 8 is engaged with the rack 9, the linear slide rail 11 and the slider 10 can be slidably connected, thereby reducing the structural complexity of the connecting beam 3 and reducing the size and weight of the connecting beam 3.

[0054] The first motor 7 is fixedly connected to the first bracket 16, and a plurality of support frames 17 are arranged on a side of the support plate 15 away from the connecting beam 3. The outer shell 18 is covered on the outside of the first bracket 16 and the plurality of support frames 17, and is detachably connected to the connecting plate 14. The plurality of support frames 17 are used to support the outer shell 18 to achieve structural reinforcement, so that the outer shell 18 can use a thin plate and can ensure strength. The outer shell 18 is also provided with an outlet 20 near the connecting plate 14. There is space between the outer shell 18 and the support plate 15, which can be used for the layout of circuit connecting lines, making the equipment beautiful and ensuring the safety of electricity use.

[0055] For example, Figure 5 and Figure 6 As shown, the angle adjustment component 4 includes a support seat 21, a driven shaft 22, a second gear 23, a second motor 24, a second bracket 25, a third gear 26, a transmission belt 27 and a connecting block 28.

[0056] Among them, the support seat 21 is detachably fixedly connected to one end of the connecting beam 3 by bolts, and one end of the driven shaft 22 is rotatably connected to the support seat 21. For example, a bearing is arranged on the support seat 21, and one end of the driven shaft 22 is interference fit with the inner ring of the bearing. The center line of the driven shaft 22 and the bearing is perpendicular to the transverse center line of the connecting beam 3. The second gear 23 is arranged at the other end of the driven shaft 22, and the second motor 24 is arranged near the support seat 21. The second motor 24 is detachably connected to the connecting beam 3 through the second bracket 25. The third gear 26 is fixedly connected to the transmission shaft of the second motor 24. The third gear 26 is transmission-connected to the second gear 23 through a transmission toothed belt 27. The connecting block 28 is fixedly connected to the middle part of the driven shaft 22. There is a gap between the connecting block 28 and the second gear 23 and the support seat 21. The connecting block 28 is detachably fixedly connected to the nozzle assembly 5 by bolts.

[0057] The second motor 24 is connected to the controller for communication. The controller controls the start and stop of the second motor 24. After the second motor 24 is started, it drives the third gear 26 through the transmission shaft. The third gear 26 drives the second gear 23 to rotate through the transmission belt. Since the second gear 23 is fixedly connected to the driven shaft 22, the second gear 23 drives the driven shaft 22 to rotate on the bearing of the support seat 21. When the driven shaft 22 rotates, the spray assembly is driven to rotate around the center of the driven shaft 22 through the connecting block 28 to complete the angle adjustment of the nozzle assembly 5.

[0058] The angle adjustment component 4 of the utility model has a simple and reliable structure, a wide angle adjustment range, and a light structure and weight, and is easy to transport and install.

[0059] For example, Figure 6 As shown, the nozzle assembly 5 includes a support beam 29, a nozzle 30 and a fixing frame 31. The support beam 29 is detachably fixedly connected to the connecting block 28 by bolts. The support beam 29 and the connecting beam 3 are perpendicular to each other. A plurality of nozzles 30 are detachably fixedly connected to the support beam 29 by bolts. The nozzles 30 and the connecting beam 3 are parallel to each other. For example, two nozzles 30 are provided, and the two nozzles 30 are respectively located at the two ends of the support beam 29.

[0060] A distance measuring unit 6 is correspondingly provided for each nozzle 30 . The distance measuring unit 6 is fixedly connected to the support beam 29 via a fixing frame 31 . The distance measuring unit 6 is located behind the nozzle 30 .

[0061] For example, Figure 6 and Figure 7As shown, the distance measuring unit 6 includes two laser distance meters 32, and the fixing frame 31 includes a plate A33, a plate B34 and a plate C35. One end of the plate A33 is detachably fixedly connected to the support beam 29, the plate A33 and the support beam 29 are perpendicular to each other, the plates B34 and C35 are fixedly connected to the other end of the plate A33, the plates B34 and C35 are perpendicular to the plate A33, the plates B34 and C35 are parallel to each other, and the two laser distance meters 32 are detachably connected to the plates B34 and C35, respectively. For example, the fixing frame 31 can be formed by sheet metal integration.

[0062] For example, Figure 7 and Figure 8 As shown, the nozzle assembly 5 also includes a shield 36 and a plate D37. Both the plate B34 and the plate C35 are provided with folded edges, and the folded edges are provided with through holes. The shield 36 is provided on the outside of the two laser rangefinders 32. The shield 36 passes through the through holes on the folded edges of the plates B34 and C35 by bolts, and is detachably fixedly connected to the plates B34 and C35. The shield 36 is opened on one side of the nozzle 30, and the plate D37 is detachably fixedly connected to the side of the opening of the shield 36 by bolts. The plate D37 is provided with through holes at the positions of the two laser rangefinders 32, and the laser emitted by the laser rangefinder 32 passes through the through holes on the plate D37.

[0063] The working principle of the nozzle adjustment structure of the utility model is as follows:

[0064] The nozzle adjustment structure is fixedly connected to the connection part on the spraying robot through the upper end of the fixed seat 1. When the nozzle assembly 5 is spraying the sprayed part, the distance measuring unit 6 measures the real-time distance between the nozzle assembly 5 and the sprayed part in real time, and sends the real-time distance to the controller. The controller compares the real-time distance with the set value, and adjusts the position of the nozzle assembly 5 in real time through the displacement adjustment component 2 to keep the distance between the nozzle assembly 5 and the sprayed part at the set value. When the angle of the nozzle assembly 5 needs to be adjusted, the controller controls the angle adjustment component 4 to adjust the angle of the nozzle assembly 5, thereby realizing the linear displacement and angle adjustment of the nozzle assembly 5.

[0065] The nozzle adjustment structure of the utility model realizes the distance adjustment between the nozzle assembly 5 and the sprayed part, and also realizes the angle adjustment, and can spray different structures. The structure is simple and practical, and the weight is light, which is convenient for installation and transportation.

[0066] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A nozzle adjustment structure, characterized in that: It includes a fixing seat, a displacement adjustment component, a connecting beam, an angle adjustment component and a nozzle assembly; Wherein, the connecting beam is connected to the fixing seat through the displacement adjusting component, the connecting beam is perpendicular to the sprayed part, the angle adjusting component is arranged at one end of the connecting beam, and the angle adjusting component is transmission-connected to the spray head assembly; The displacement adjustment component is used to drive the connecting beam to move linearly in a direction perpendicular to the fixing seat, so as to adjust the distance between the nozzle assembly and the sprayed part; The angle adjustment component is used to adjust the angle between the nozzle assembly and the connecting beam.

2. The nozzle adjustment structure according to claim 1, characterized in that: The displacement adjustment component includes a first motor, a first gear, a rack, a slider and a linear slide rail; Among them, the first motor is fixedly connected to the middle part of the fixed seat, the slider is fixedly connected to the bottom of the fixed seat, the first gear is fixedly connected to the transmission shaft of the first motor, the rack is arranged on the top of the connecting beam and meshes with the first gear, the linear slide rail is arranged on a side of the connecting beam close to the fixed seat, and the slider is slidably connected to the linear slide rail.

3. The nozzle adjustment structure according to claim 2, characterized in that: The displacement adjustment component also includes two limit plates and two proximity switches. The two limit plates are respectively arranged at both ends of the linear slide rail and are fixedly connected to the connecting beam. The two proximity switches are respectively arranged at both sides of the slider and are fixedly connected to the fixing seat.

4. The nozzle adjustment structure according to claim 2, characterized in that: The fixing seat comprises a connecting plate, a supporting plate and a first bracket; Among them, the connecting plate is fixedly connected to the top of the supporting plate, the sliding block is fixedly connected to the bottom of the supporting plate close to the side of the connecting beam, the supporting plate is provided with an avoidance hole above the sliding block, the first bracket is connected to a side of the supporting plate away from the connecting beam, the first motor and the first gear are located in the avoidance hole, and the first motor is fixedly connected to the first bracket.

5. The nozzle adjustment structure according to claim 4, characterized in that: The fixing seat also includes a support frame and an outer shell, wherein a plurality of the support frames are arranged on a side of the support plate away from the connecting beam, and the outer shell cover is arranged outside the first bracket and the plurality of the support frames and is connected to the connecting plate.

6. The nozzle adjustment structure according to any one of claims 1 to 5, characterized in that: The angle adjustment component includes a support seat, a driven shaft, a second gear, a second motor, a second bracket, a third gear, a transmission belt and a connecting block; Among them, the support seat is fixedly connected to one end of the connecting beam, one end of the driven shaft is rotatably connected to the support seat, the second gear is arranged at the other end of the driven shaft, the second motor is connected to the connecting beam through the second bracket, the third gear is fixedly connected to the transmission shaft of the second motor, the third gear is transmission-connected to the second gear through the transmission toothed belt, the connecting block is fixedly connected to the middle part of the driven shaft, and the connecting block is fixedly connected to the nozzle assembly.

7. The nozzle adjustment structure according to claim 6, characterized in that: The nozzle assembly includes a support beam and a nozzle; Wherein, the support beam is fixedly connected to the connection block, the support beam and the connection beam are perpendicular to each other, and a plurality of the nozzles are fixedly connected to the support beam.

8. The nozzle adjustment structure according to claim 7, characterized in that: The nozzle assembly also includes a fixing frame and a distance measuring unit. One distance measuring unit is correspondingly arranged for each nozzle. The distance measuring unit is fixedly connected to the support beam through the fixing frame. The distance measuring unit is located behind the nozzle.

9. The nozzle adjustment structure according to claim 8, characterized in that: The distance measuring unit includes two laser rangefinders, and the fixed frame includes plate A, plate B and plate C. One end of plate A is fixedly connected to the support beam, and plate B and plate C are fixedly connected to the other end of plate A. The two laser rangefinders are respectively connected to plate B and plate C.

10. The nozzle adjustment structure according to claim 9, characterized in that: The nozzle assembly also includes a shield and a plate D. Both the plate B and the plate C are provided with folded edges. The shield is arranged on the outside of the two laser rangefinders. The shield is fixedly connected to the plates B and C. The shield is opened on one side of the nozzle. The plate D is fixedly connected to one side of the shield opening. The plate D is provided with through holes at the positions of the two laser rangefinders.

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