Linear displacement type spraying mechanism

Abstract

A linear displacement spraying mechanism includes: a spraying bracket and a synchronous lifter. The spraying bracket is mounted on the upper side of a continuous climbing robot, and the synchronous lifter is connected to the upper side of the spraying bracket. Multiple synchronous nozzles are movably mounted on the synchronous lifter via a drive component. The output ends of the synchronous nozzles are arranged relative to the steel profile. A stirring component is connected to the filling port of the paint tank, and the input end of a feeding component is connected to the discharge port of the paint tank. The output end of the feeding component is connected to the input ends of the multiple synchronous nozzles. This design achieves automatic synchronous lifting and lowering of the synchronous nozzles by driving the synchronous lifter. Simultaneously, the drive component drives the synchronous nozzles to move horizontally reciprocatingly, allowing the movement trajectory of the synchronous nozzles to cover the entire outer surface of the steel profile to be sprayed. By incorporating the stirring component, paint sedimentation and accumulation that could cause layering and color differences can be avoided. The feeding component continuously delivers paint from the paint tank to the synchronous nozzles, resulting in high spraying efficiency and relative safety.

Description

Technical Field

[0001] This utility model relates to the field of spraying equipment technology, and in particular to a linear displacement spraying mechanism. Background Technology

[0002] Modern engineering construction requires the extensive use of lightweight, high-strength steel. However, the biggest drawback of steel is its susceptibility to corrosion. Furthermore, steel exposed to high temperatures for extended periods requires fireproofing. Therefore, applying anti-corrosion, anti-rust, and fireproof coatings to the surface of steel to prevent contact with oxygen and moisture and thus oxidation is one of the effective means to ensure its durability.

[0003] Therefore, in infrastructure construction, it is necessary to spray anti-corrosion coatings on large areas of exposed steel profiles, especially on the columns of station canopies. Due to the height and small cross-section of the canopy columns, if scaffolding is erected for spraying anti-corrosion coatings, it will not only be time-consuming and labor-intensive, but also unsafe due to the large height-to-slender ratio. Especially in later maintenance, the layout of production equipment will result in insufficient space for scaffolding. At the same time, in the existing large-area spraying technology, the construction workers basically use hand-held spray nozzles to spray. Although the efficiency is improved compared to the traditional roller brush method, this spraying method has high labor intensity and low efficiency for construction workers, which cannot meet the requirements of large-area construction operations. In addition, the coating thickness is not easy to control, which can lead to cracks and affect the durability of the steel structure. Long-term close contact with the coating will have a significant impact on the health of workers. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects and problems of low spraying efficiency and poor safety in the existing technology, and to provide a linear displacement spraying mechanism with high spraying efficiency and good safety.

[0005] To achieve the above objectives, the technical solution of this utility model is: a linear displacement spraying mechanism, comprising: a spraying bracket, a synchronous lifter, multiple synchronous nozzles, a paint tank, a feeding assembly, and a mixing assembly. The spraying bracket is installed on the upper side of a continuous climbing robot, the synchronous lifter is connected to the upper side of the spraying bracket, and the multiple synchronous nozzles are movably installed on the synchronous lifter via driving components. The output ends of the synchronous nozzles are arranged relative to the structural steel. The mixing assembly is connected to the feeding port of the paint tank, the input end of the feeding assembly is connected to the discharge port of the paint tank, and the output end of the feeding assembly is connected to the input ends of the multiple synchronous nozzles respectively.

[0006] The spraying bracket includes two symmetrically arranged angle steels located on the left and right sides of the structural steel. The lower side of the angle steels is connected to the upper side of the continuous climbing robot, and the synchronous lifter is connected to the upper side of the two angle steels.

[0007] The synchronous lifter includes multiple bases and a servo motor. Each base is connected to the upper side of the angle steel. A column is vertically connected to the upper side of each base. Double-sided racks are connected to adjacent sides of each column. A displacement seat is fitted onto the outer circumference of the column. A cavity is formed within each displacement seat. A gear shaft is rotatably connected between two adjacent displacement seats. Both ends of the gear shaft pass through the two adjacent displacement seats and are located within the two cavities. A spur gear and a bevel gear are connected to both ends of the gear shaft. The two spur gears mesh with one side of each of the two adjacent double-sided racks. The two bevel gears on the gear shaft mesh with bevel gears on adjacent gear shafts. The servo motor is mounted on one of the displacement seats, and its output shaft passes through the displacement seat and is coaxially connected to the end of one of the gear shafts.

[0008] The base includes a base plate and a connecting plate. The base plate is connected to the upper side of the angle steel. The connecting plate has bolt holes with internal threads for bolts. The column is vertically connected to the upper side of the connecting plate.

[0009] The base consists of four columns, all of which are distributed in parallel outside the four apex corners of the steel profile. The cross-section of each column is square.

[0010] The synchronous nozzle includes a high-pressure nozzle, a guide rail, and a linear bearing. The guide rail is connected between two adjacent displacement seats. The linear bearing is slidably connected to the outer periphery of the guide rail. The high-pressure nozzle is connected to the linear bearing and a driving component. The driving component is used to drive the high-pressure nozzle to slide back and forth along the guide rail.

[0011] The high-pressure nozzle is fan-shaped, with the lower side of the tail of the high-pressure nozzle connected to the linear bearing and the upper side of the tail of the high-pressure nozzle connected to the drive component.

[0012] The driving component includes a linear reciprocating motor, the stator of which is connected between the two displacement seats, and the mover of which is connected to the upper side of the tail of the high-pressure nozzle.

[0013] The feeding assembly includes a variable screw pump, a manual-electric integrated control valve, and a high-pressure pipeline. The input end of the variable screw pump is connected to the outlet of the paint tank, the input end of the manual-electric integrated control valve is connected to the output end of the variable screw pump, the input end of the high-pressure pipeline is connected to the output end of the manual-electric integrated control valve, and the output end of the high-pressure pipeline is connected to multiple high-pressure nozzles via a connector.

[0014] The paint tank is funnel-shaped, wider at the top and narrower at the bottom. The upper part of the paint tank has a feeding port. A one-way air inlet valve, an exhaust valve, and a solvent replenishment solenoid valve are sequentially installed on the upper part of the paint tank. The lower part of the paint tank has a discharge port, which is connected to a connector. The connector is connected to the feeding assembly. The bottom of the paint tank has a discharge port. The stirring assembly includes a stirring motor. The stirring motor is installed in the paint tank, and its output shaft passes through the feeding port and is connected to a spiral stirring roller.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model discloses a linear displacement spraying mechanism. The spraying mechanism is mounted on a continuous climbing robot via a spraying bracket. When the continuous climbing robot reaches the braking position and stops, a synchronous lifter on the spraying bracket drives the synchronous nozzle to move up and down reciprocally. Simultaneously, a drive component on the synchronous nozzle drives the nozzle to move horizontally reciprocally, ensuring that the movement trajectory of the synchronous nozzle covers the entire outer surface of the steel to be sprayed. A stirring component allows for timed stirring of the paint, preventing sedimentation and color differences. A feeding component continuously transports paint from the paint tank to the synchronous nozzle. During spraying, no manual operation of the nozzle is required, resulting in high efficiency and safety. Therefore, this utility model offers high spraying efficiency and good safety.

[0017] 2. This utility model discloses a linear displacement spraying mechanism. It controls the rotation angle of a servo motor to ensure the overall lifting height for each cycle. The synchronous lifter is formed by the meshing of spur gears and double-sided racks on each gear shaft. Simultaneously, bevel gears at the ends of adjacent gear shafts mesh to transmit torque. Under the output torque of the servo motor, the spur gears and bevel gears achieve double-meshing linkage and rotate in the same direction, causing the four displacement seats to rise and fall synchronously along the double-sided rack. This drives the synchronous spray heads on the displacement seats to follow the stable movement of the entire assembly. This double-meshing, co-directional rotation effectively prevents asynchronous lifting due to mechanical failure. Therefore, this utility model has a stable working process and high reliability.

[0018] 3. This utility model discloses a linear displacement spraying mechanism. By adding a guide rail below the linear reciprocating motor, it effectively resists the deformation of the guide rail of the linear motor stator caused by the reaction force during high-pressure spraying. The use of gear and rack lifting and the horizontal movement of the linear motor ensures that the high-pressure nozzle moves along a predetermined path, guaranteeing uniform spraying and preventing drips and cracking. Therefore, this utility model has a stable structure and good spraying effect.

[0019] 4. This utility model discloses a linear displacement spraying mechanism. It employs a manual-electric integrated control valve, allowing for manual operation while the user is seated, and manual intervention during online and remote control operation. A variable screw pump allows for real-time adjustment of flow rate and pressure. The variable screw pump, through the rotation of its helical blades, causes the paint to rise spirally along the axial direction, further mixing the paint during pumping to prevent color differences. The variable screw pump and high-pressure nozzle atomize the paint into fine particles under high pressure, uniformly coating the structural surface and ensuring the thickness of each layer. This prevents excessively thick or uneven coatings that could lead to excessive internal stress and cracking. An electronic thermometer and hygrometer automatically activate the heating device within the stirring unit in low-temperature environments to preheat the paint while mixing. When humidity exceeds limits, the solvent replenishment device is activated to compensate for paint flowability. Therefore, this utility model is convenient to use and produces high-quality paint.

[0020] 5. This utility model discloses a linear displacement spraying mechanism. An air inlet valve allows air to enter the paint tank promptly during spraying, preventing tank deformation. An exhaust valve allows for timely discharge when the internal temperature is high. The funnel-shaped design of the tank, wider at the top and narrower at the bottom, ensures thorough mixing of the paint, which is then collected at the lowest point and sucked out. A discharge port at the bottom of the tank facilitates the discharge of remaining paint and cleaning of the tank. Therefore, this utility model is scientifically sound and ensures consistent paint quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a linear displacement spraying mechanism according to this utility model.

[0022] Figure 2 This is a structural schematic diagram of the spraying bracket, synchronous lifter, synchronous spray head, and drive component in this utility model.

[0023] Figure 3 This is a partial structural diagram of the synchronous lifting device and the spraying bracket in this utility model.

[0024] Figure 4 This is a partial sectional view of the column, displacement seat, gear shaft, gear, and double-sided rack in this utility model.

[0025] Figure 5 This is a structural schematic diagram of the synchronous nozzle and drive component in this utility model.

[0026] Figure 6 This is a structural schematic diagram of the paint tank, feeding assembly, and mixing assembly in this utility model.

[0027] Figure 7 This is a cross-sectional schematic diagram of the paint tank and mixing assembly in this utility model.

[0028] In the diagram: 1. Steel section; 2. Continuous climbing robot; 3. Spraying bracket; 3. Angle steel; 31. Synchronous lifting device; 4. Base; 41. Base plate; 411. Connecting plate; 412. Bolt hole; 413. Column; 42. Double-sided rack; 43. Displacement seat; 44. Cavity; 45. Gear shaft; 46. Spur gear; 47. Servo motor; 48. Bevel gear; 49. Synchronous nozzle; 5. High-pressure nozzle; 51. Guide rail; 52. Linear bearing; 53. Paint tank; 6. One-way air inlet valve; 61. Exhaust valve; 62. Solvent replenishment solenoid valve; 63. Connector; 64. Electronic temperature and humidity sensor; 65. Discharge port; 66. Feeding assembly; 7. Variable screw pump; 71. Manual-electric integrated control valve; 72. Mixing assembly; 8. Mixing motor; 81. Spiral mixing roller; 82. Drive component; 9. Linear reciprocating motor; 91. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1:

[0031] See Figures 1 to 4 A linear displacement spraying mechanism includes: a spraying bracket 3, a synchronous lifter 4, multiple synchronous nozzles 5, a paint tank 6, a feeding assembly 7, and a mixing assembly 8. The spraying bracket 3 is mounted on the upper side of a continuous climbing robot 2. The synchronous lifter 4 is connected to the upper side of the spraying bracket 3. The multiple synchronous nozzles 5 are movably mounted on the synchronous lifter 4 via a drive component 9. The output ends of the synchronous nozzles 5 are arranged relative to the profile steel 1. The mixing assembly 8 is connected to the feeding port of the paint tank 6. The input end of the feeding assembly 7 is connected to the discharge port of the paint tank 6. The output end of the feeding assembly 7 is connected to the input ends of the multiple synchronous nozzles 5 respectively.

[0032] In this embodiment, the spraying mechanism also includes an intelligent control system, which includes an electronic viscometer, an electronic temperature and humidity sensor, and an ultrasonic wind speed and direction sensor. A heating device is installed in the stirring assembly 8 to automatically heat the coating within a set temperature range to ensure the texture of the paint film. A solvent replenishment device is installed on the upper part of the coating tank 6. The electronic temperature and humidity sensor 65 and the electronic viscometer are placed in the coating tank 6 to measure the temperature, humidity, and viscosity of the coating. Automatic and timely solvent replenishment effectively avoids the coating from sitting for too long, which would cause solvent evaporation and affect the surface quality, drying time, and adhesion of the paint film. The ultrasonic wind speed and direction sensor is installed on the synchronous nozzle 5 to dynamically correct the spraying trajectory deviation. Each sensor transmits the measured data to the intelligent control system. The intelligent control system automatically starts the heating device in the stirring assembly 8 to preheat the coating while mixing it in a low-temperature environment, and controls the solvent replenishment device to work when the viscosity exceeds the limit to compensate for the fluidity of the coating, thereby improving the initial stability and ensuring the spraying quality and uniform coating.

[0033] Example 2:

[0034] The basic content is the same as in Example 1, except that:

[0035] See Figures 2 to 4 The spraying bracket 3 includes two symmetrically arranged angle steels 31, which are located on the left and right sides of the steel profile 1. The lower side of the angle steels 31 is connected to the upper side of the continuous climbing robot 2, and the synchronous lifter 4 is connected to the upper side of the two angle steels 31.

[0036] The synchronous lifting device 4 includes multiple bases 41 and a servo motor 48. Each base 41 is connected to the upper side of the angle steel 31. A column 42 is vertically connected to the upper side of each base 41. Double-sided racks 43 are connected to adjacent sides of each column 42. A displacement seat 44 is fitted onto the outer circumference of each column 42. A cavity 45 is formed within each displacement seat 44. A gear shaft 46 is rotatably connected between two adjacent displacement seats 44. Both ends of the gear shaft 46 pass through two adjacent displacement seats 44 and are located within two cavities 45. A spur gear 47 and a bevel gear 49 are connected to both ends of the gear shaft 46. The two spur gears 47 mesh with one side of each of the two adjacent double-sided racks 43. The two bevel gears 49 on the gear shaft 46 are respectively meshed with the bevel gears 49 on the adjacent gear shaft 46. The servo motor 48 is mounted on one of the displacement seats 44 and its output shaft passes through the displacement seat 44 and is coaxially connected to the end of one of the gear shafts 46. The base 41 includes a base plate 411 and a connecting plate 412. The base plate 411 is connected to the upper side of the angle steel 31. The connecting plate 412 has bolt holes 413, and bolts are threaded into the bolt holes 413. The column 42 is vertically connected to the upper side of the connecting plate 412. There are four bases 41. The four columns 42 are distributed parallel to each other outside the four apex corners of the steel section 1. The cross-section of the column 42 is square.

[0037] In this embodiment, a double-sided rack 43 is obtained by machining racks on both adjacent sides of the column 42. The double-sided rack 43 has a rectangular cross section. The overall lifting height is ensured by controlling the rotation angle of the servo motor 48. The spur gear 47 and the double-sided rack 43 are meshed and installed in the displacement seat 44. At the same time, the surface of the double-sided rack 43 is treated with titanium nitride coating to reduce the gear transmission resistance during linkage lifting.

[0038] Example 3:

[0039] The basic content is the same as in Example 1, except that:

[0040] See Figure 5The synchronous nozzle 5 includes a high-pressure nozzle 51, a guide rail 52, and a linear bearing 53. The guide rail 52 is connected between two adjacent displacement seats 44. The linear bearing 53 is slidably connected to the outer periphery of the guide rail 52. The high-pressure nozzle 51 is connected to the linear bearing 53 and a driving component 9. The driving component 9 is used to drive the high-pressure nozzle 51 to slide back and forth along the guide rail 52. The high-pressure nozzle 51 is fan-shaped. The lower side of the tail of the high-pressure nozzle 51 is connected to the linear bearing 53, and the upper side of the tail of the high-pressure nozzle 51 is connected to the driving component 9. The driving component 9 includes a linear reciprocating motor 91. The stator of the linear reciprocating motor 91 is connected between the two displacement seats 44, and the mover of the linear reciprocating motor 91 is connected to the upper side of the tail of the high-pressure nozzle 51.

[0041] In this embodiment, a displacement sensor can be built into the linear reciprocating motor 91 to achieve high-precision horizontal positioning of the fan-shaped high-pressure nozzle 51. The linear reciprocating motor 91 is installed directly above the guide rail 52. The synchronous lifter 4 is connected as a whole through the guide rail 52 and the linear reciprocating motor 91, so that each mechanism can perform linkage lifting when the spur gear 47 and the bevel gear 49 transmit to each other.

[0042] Example 4:

[0043] The basic content is the same as in Example 1, except that:

[0044] See Figure 6 and Figure 7 The feeding assembly 7 includes a variable screw pump 71, a manual-electric integrated control valve 72, and a high-pressure pipeline. The input end of the variable screw pump 71 is connected to the discharge port of the paint tank 6, the input end of the manual-electric integrated control valve 72 is connected to the output end of the variable screw pump 71, the input end of the high-pressure pipeline is connected to the output end of the manual-electric integrated control valve 72, and the output end of the high-pressure pipeline is connected to multiple high-pressure nozzles 51 through a connector.

[0045] The paint tank 6 is funnel-shaped, wider at the top and narrower at the bottom. The upper part of the paint tank 6 has a feeding port. A one-way air inlet valve 61, an exhaust valve 62, and a solvent replenishment solenoid valve 63 are sequentially installed on the upper part of the paint tank 6. The lower part of the paint tank 6 has a discharge port connected to a connector 64. An electronic temperature and humidity sensor 65 is built into the lower part of the paint tank 6. The connector 64 is connected to the feeding assembly 7. A discharge port 66 is provided at the bottom of the paint tank 6. The stirring assembly 8 includes a stirring motor 81, which is installed in the paint tank 6, and its output shaft passes through the feeding port and is connected to a spiral stirring roller 82 with a heating function.

[0046] In this embodiment, the paint tank 6 is installed below the drive motor of the continuous climbing robot 2, the variable screw pump 71 is installed on the lower left side of the paint tank 6, the manual-electric integrated control valve 72 is installed in the middle of the variable screw pump 71 and the drive motor, the connector 64 is equipped with a valve for connecting to the valve of the variable screw pump 71, the solvent replenishment solenoid valve 63 is connected to the solvent replenishment device for controlling the solvent replenishment rate, after the spraying is completed, the discharge port 66 is opened to facilitate the discharge of the remaining paint from the discharge port 66 and the cleaning of the paint tank 6.

[0047] Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A linear displacement spraying mechanism, characterized in that, include: The spraying bracket (3), synchronous lifter (4), multiple synchronous nozzles (5), paint tank (6), feeding assembly (7), and mixing assembly (8) are provided. The spraying bracket (3) is installed on the upper side of the continuous climbing robot (2). The synchronous lifter (4) is connected to the upper side of the spraying bracket (3). The multiple synchronous nozzles (5) are movably installed on the synchronous lifter (4) through the drive component (9). The output end of the synchronous nozzle (5) is arranged relative to the profile steel (1). The mixing assembly (8) is connected to the feeding port of the paint tank (6). The input end of the feeding assembly (7) is connected to the discharge port of the paint tank (6). The output end of the feeding assembly (7) is connected to the input end of the multiple synchronous nozzles (5).

2. The linear displacement spraying mechanism according to claim 1, characterized in that: The spraying bracket (3) includes two symmetrically arranged angle steels (31), which are located on the left and right sides of the profile steel (1). The lower side of the angle steels (31) is connected to the upper side of the continuous climbing robot (2), and the synchronous lifter (4) is connected to the upper side of the two angle steels (31).

3. The linear displacement spraying mechanism according to claim 2, characterized in that: The synchronous lifting device (4) includes multiple bases (41) and a servo motor (48). The multiple bases (41) are all connected to the upper side of the angle steel (31). A column (42) is vertically connected to the upper side of the base (41). A double-sided rack (43) is connected to the adjacent two sides of the column (42). A displacement seat (44) is fitted on the outer circumference of the column (42). A cavity (45) is opened in the displacement seat (44). A gear shaft (46) is rotatably connected between two adjacent displacement seats (44). The two ends of the gear shaft (46) pass through the two adjacent displacement seats respectively. (44) is located in the two cavities (45). Both ends of the gear shaft (46) are connected to spur gears (47) and bevel gears (49). The two spur gears (47) are respectively meshed with one side of the two adjacent double-sided racks (43). The two bevel gears (49) on the gear shaft (46) are respectively meshed with the bevel gears (49) on the adjacent gear shaft (46). The servo motor (48) is mounted on one of the displacement seats (44) and its output shaft passes through the displacement seat (44) and is coaxially connected to the end of one of the gear shafts (46).

4. A linear displacement spraying mechanism according to claim 3, characterized in that: The base (41) includes a base plate (411) and a connecting plate (412). The base plate (411) is connected to the upper side of the angle steel (31). The connecting plate (412) has bolt holes (413) and bolts are threaded into the bolt holes (413). The column (42) is vertically connected to the upper side of the connecting plate (412).

5. A linear displacement spraying mechanism according to claim 3, characterized in that: The number of bases (41) is four, and the four columns (42) are distributed in parallel outside the four apex corners of the steel section (1). The cross section of the columns (42) is square.

6. A linear displacement spraying mechanism according to claim 3, characterized in that: The synchronous nozzle (5) includes a high-pressure nozzle (51), a guide rail (52), and a linear bearing (53). The guide rail (52) is connected between two adjacent displacement seats (44). The linear bearing (53) is slidably connected to the outer periphery of the guide rail (52). The high-pressure nozzle (51) is connected to the linear bearing (53) and a drive member (9). The drive member (9) is used to drive the high-pressure nozzle (51) to slide back and forth along the guide rail (52).

7. A linear displacement spraying mechanism according to claim 6, characterized in that: The high-pressure nozzle (51) is fan-shaped, with the lower side of the tail of the high-pressure nozzle (51) connected to the linear bearing (53) and the upper side of the tail of the high-pressure nozzle (51) connected to the drive member (9).

8. A linear displacement spraying mechanism according to claim 6, characterized in that: The drive unit (9) includes a linear reciprocating motor (91), the stator of which is connected between the two displacement seats (44), and the mover of which is connected to the upper side of the tail of the high-pressure nozzle (51).

9. A linear displacement spraying mechanism according to claim 6, characterized in that: The feeding assembly (7) includes a variable screw pump (71), a manual-electric integrated control valve (72), and a high-pressure pipeline. The input end of the variable screw pump (71) is connected to the outlet of the paint tank (6), the input end of the manual-electric integrated control valve (72) is connected to the output end of the variable screw pump (71), the input end of the high-pressure pipeline is connected to the output end of the manual-electric integrated control valve (72), and the output end of the high-pressure pipeline is connected to multiple high-pressure nozzles (51) through a connector.

10. A linear displacement spraying mechanism according to claim 1, characterized in that: The paint tank (6) is funnel-shaped with a larger top and a smaller bottom. The upper part of the paint tank (6) has the feeding port. The upper part of the paint tank (6) is sequentially equipped with a one-way air inlet valve (61), an exhaust valve (62), and a solvent replenishment solenoid valve (63). The lower part of the paint tank (6) has the discharge port. The discharge port is connected to a connector (64). The connector (64) is connected to the feeding assembly (7). The bottom of the paint tank (6) has a discharge port (66). The stirring assembly (8) includes a stirring motor (81). The stirring motor (81) is installed in the paint tank (6), and its output shaft passes through the feeding port and is connected to a spiral stirring roller (82).

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