Automatic outer paint spraying device for large steel member

Abstract

The invention discloses an automatic outer paint spraying device for a large steel member. The automatic outer paint spraying device comprises a first walking support arranged on one side and a second walking support arranged on the other side. A large steel member is placed between the first walking support and the second walking support. A first transverse rod is arranged between the first walking support and the second walking support, the first transverse rod is located on the upper side of the large steel component, a first transverse moving assembly is arranged on the first transverse rod, and a first downward nozzle is arranged on the first transverse moving assembly; the first walking support and the second walking support are each provided with a first vertical moving assembly, each first vertical moving assembly is provided with a third transverse moving assembly, and the tail end of each third transverse moving assembly is provided with a first side face nozzle, a first upward nozzle and a first inward nozzle. Paint spraying can be automatically carried out according to the appearance of the steel component, the paint spraying efficiency is improved, and multi-face paint spraying operation can be automatically carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of painting large steel components, and particularly to an automatic external painting device for large steel components. Background Art

[0002] At present, due to the large volume and irregular shape of large steel bridge sections, the painting operation is basically carried out by manual painting in a closed space. There is no fully automatic painting device yet. Moreover, because there are toxic, harmful, flammable, and explosive gases in the working environment, it poses a great threat to the personal safety and health of the operators. Long-term exposure to such a harsh environment by painting workers is not only prone to occupational diseases, such as leukemia, but also prone to accidents such as poisoning, fire, and explosion. Manual painting operation will be affected by various factors such as human physical strength, attention, and operation proficiency, resulting in quality defects such as uneven painting thickness, running, pitting, unevenness, and wrinkling. Manual painting has low efficiency and slow speed, and is not suitable for painting large batches of components. Summary of the Invention

[0003] On the one hand, the purpose of the present invention is to optimize the working environment to enable workers to get rid of dangerous and harmful working conditions, effectively reduce the occupational health risks and prevent safety accidents; on the other hand, to overcome the defect of low efficiency of manual painting in the prior art, and provide an automatic external painting device for large steel components; which can automatically paint according to the shape of the steel component, improve the painting efficiency, and can also automatically perform multi-sided painting, and is applicable to the automatic painting operations of various arc-shaped steel components, steel components with overhanging structures, and steel components with sunken structures at the bottom.

[0004] To achieve the above purpose, the present invention provides an automatic external painting device for large steel components, including a first walking bracket installed on one side and a second walking bracket installed on the other side; a large steel component is placed between the first walking bracket and the second walking bracket; a first cross bar is installed between the first walking bracket and the second walking bracket, the first cross bar is located above the large steel component, a first horizontal moving component is installed on the first cross bar, and a first downward nozzle is installed on the first horizontal moving component; first vertical moving components are installed on both the first walking bracket and the second walking bracket, a third horizontal moving component is installed on the first vertical moving component, and a first side nozzle, a first upward nozzle, and a first inward nozzle are installed at the end of the third horizontal moving component.

[0005] Preferably, a second cross bar is sleeved between the first walking bracket and the second walking bracket. The second cross bar is located below the large steel member. A second transverse movement assembly is installed on the second cross bar. A second vertical movement assembly is installed on the second transverse movement assembly. A second upward nozzle is installed at the end of the second vertical movement assembly. The second transverse movement assembly and the second vertical movement assembly drive the second upward nozzle to move transversely and vertically respectively.

[0006] Preferably, limiting wheels are installed on the inner sides of the first walking bracket and the second walking bracket facing the large steel member. The first walking bracket, the second walking bracket and the limiting wheels cooperate with each other to perform reciprocating linear motion along the longitudinal direction of the large steel member.

[0007] Preferably, both the first walking bracket and the second walking bracket include a first longitudinal rod, a driving roller installed at one end of the first longitudinal rod, a driven roller installed at the other end of the first longitudinal rod, and a first vertical rod installed in the middle of the first longitudinal rod; the driving roller drives the driven roller and the limiting wheel to rotate.

[0008] Preferably, the first cross bar is located above the second cross bar. Both the first cross bar and the second cross bar are sleeved on the first vertical rods on both sides and are vertically adjusted along the first vertical rods.

[0009] Preferably, vertical plates are installed at both ends of the first cross bar. Vertical U-shaped grooves are provided on the vertical plates. A first transverse movement assembly is installed on the vertical U-shaped grooves. The first transverse movement assembly is vertically adjusted along the vertical U-shaped grooves.

[0010] Preferably, the first transverse movement assembly includes a first transverse rack installed on the vertical U-shaped groove. A first rectangular tube is sleeved on the first transverse rack. A first motor is installed on one side of the first rectangular tube, and a first gear driven by the first motor is installed inside; the first rectangular tube, the first motor and the first gear all perform reciprocating transverse motion along the first transverse rack. A first downward nozzle and a first radar for sensing the distance from the large steel member are installed at the lower part of the first rectangular tube.

[0011] Preferably, the second lateral movement assembly includes a second lateral rack mounted on the second cross bar. A second rectangular tube is sleeved on the second lateral rack. A second motor is mounted on one side of the second rectangular tube, and a second vertical movement assembly is mounted on the other side. A second gear drivenly connected to the second motor is disposed inside. The second rectangular tube, the second motor, the second gear and the second vertical movement assembly all reciprocate horizontally along the second lateral rack. The second vertical movement assembly includes a third motor mounted on the second rectangular tube and a vertical slider sleeved inside the second rectangular tube. A first vertical rack is disposed inside the vertical slider. A third gear is meshed inside the first vertical rack. The third gear is drivingly connected to the third motor. The third motor drives the third gear to rotate. Under the meshing drive of the third gear and the first vertical rack, the vertical slider is driven to reciprocate vertically. A second upward nozzle and a second radar for sensing the distance from a large steel member are mounted on the upper part of the vertical slider.

[0012] Preferably, the first vertical movement assembly includes a second vertical rack mounted on the first vertical rod. A third rectangular tube is sleeved on the second vertical rack. A fourth motor is mounted on one side of the third rectangular tube, and a third lateral movement assembly is mounted on the other side. A fourth gear drivenly connected to the fourth motor is disposed inside. The third rectangular tube, the fourth motor, the fourth gear and the third lateral movement assembly all reciprocate vertically along the second vertical rack. The third lateral movement assembly includes a connecting block mounted on one side of the third rectangular tube. A fifth motor and a lateral slider sleeved inside the connecting block are mounted on the connecting block. A third lateral rack is disposed inside the lateral slider. A fifth gear is meshed inside the third lateral rack. The fifth gear is drivingly connected to the fifth motor. The fifth motor drives the fifth gear to rotate. Under the meshing drive of the fifth gear and the third lateral rack, the lateral slider is driven to reciprocate horizontally. A first side nozzle and a third radar for sensing the distance from a large steel member are mounted at the end of the lateral slider. A first inward nozzle and a fourth radar for sensing the distance from a large steel member are mounted on the first side nozzle. A first upward nozzle and a fifth radar for sensing the distance from a large steel member are mounted on the first inward nozzle.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The present invention uses the first walking bracket, the second walking bracket and the first cross bar to form a gantry frame. A large steel member is placed inside the gantry frame, and the gantry frame moves linearly along the large steel member to achieve automatic painting. Further, the first lateral movement assembly drives the first downward nozzle to spray paint downward to paint the upper surface of the large steel member. When side painting is required, the first vertical movement assembly drives the first side nozzle to spray paint sideways and reciprocates vertically to achieve painting of both side surfaces of the large steel member. When bottom painting is required, the first vertical movement assembly drives the third lateral movement assembly to be at the bottom of the large steel member, and the third lateral movement assembly drives the first upward nozzle to spray paint upward and reciprocates horizontally to achieve painting of the bottom surface of the large steel member. When painting the front surface of the sunken structure is required, the first vertical movement assembly and the third lateral movement assembly cooperate together to drive the first inward nozzle to spray paint inward to achieve painting of the front surface of the large steel member.

[0015] 2. The present invention can automatically paint according to the shape of the steel member, improve the painting efficiency, and can also automatically perform multi-sided painting, such as: the upper surface, two side surfaces, the bottom surface and the front surface; it is applicable to the automatic painting operations of various arc-shaped steel members, steel members with overhanging structures, and steel members with sunken structures at the bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of an automatic external painting device for large steel members provided by the present invention installed together with a large steel member;

[0018] Figure 2 It is a front structural diagram of an automatic external painting device for large steel members provided by the present invention;

[0019] Figure 3 It is a front structural diagram of the second lateral movement assembly and the second vertical movement assembly provided by the present invention;

[0020] Figure 4 It is a front view of the upper part of the first walking bracket provided by the present invention;

[0021] Figure 5 It is a rear view of the upper part of the first walking bracket provided by the present invention;

[0022] Figure 6 This is a schematic diagram of the back of the second lateral movement component and the second vertical movement component provided by the present invention.

[0023] In the figure, it includes:

[0024] 1. First walking bracket; 2. Second walking bracket; 3. Large steel member; 4. First cross bar; 41. First lateral movement component; 42. First downward nozzle; 6. First vertical movement component; 7. Third lateral movement component; 71. First side nozzle; 72. First upward nozzle; 73. First inward nozzle; 5. Second cross bar; 51. Second lateral movement component; 52. Second vertical movement component; 53. Second upward nozzle; 8. Limiting wheel; 11. First longitudinal rod; 12. Driving roller; 13. Driven roller; 14. First vertical rod; 43. Vertical plate; 44. Vertical U-shaped groove; 411. First lateral rack; 412. First rectangular pipe; 413. First motor; 414. First gear; 511. Second lateral rack; 512. Second rectangular pipe; 513. Second motor; 514. Second gear; 521. Third motor; 522. Vertical slider; 523. First vertical rack; 61. Second vertical rack; 62. Third rectangular pipe; 63. Fourth motor; 64. Fourth gear; 711. Connecting block; 712. Fifth motor; 713. Lateral slider; 714. Third lateral rack; 715. Fifth gear. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are one embodiment of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Please refer to Figures 1 to 6 , the present invention provides an automatic external painting device for large steel members.

[0027] As Figure 1As shown, the automatic external painting device includes a first walking bracket 1 installed on one side and a second walking bracket 2 installed on the other side; the first walking bracket 1 and the second walking bracket 2 have the same structure and are symmetrically arranged; a first cross bar 4 is installed between the first walking bracket 1 and the second walking bracket 2, and the first walking bracket 1, the second walking bracket 2 and the first cross bar 4 form a gantry frame, forming a whole. The gantry frame can move longitudinally together to automatically spray paint on multiple surfaces of the large steel member 3; the large steel member 3 is placed inside the gantry frame; at this time, the gantry frame moves longitudinally along the large steel member 3 to spray paint on the surface of the large steel member 3, and multiple surfaces can be sprayed.

[0028] Further, the first cross bar 4 is located above the large steel member 3, and a first lateral movement assembly 41 is installed on the first cross bar 4, and a first downward nozzle 42 is installed on the first lateral movement assembly 41; driven by the first lateral movement assembly 41, the first downward nozzle 42 sprays paint on the upper side of the large steel member 3. If the upper surface has a curvature, a vertical movement assembly can also be installed on the first lateral movement assembly 41 to achieve movement in the horizontal and vertical directions.

[0029] Furthermore, first vertical movement assemblies 6 are installed on both the first walking bracket 1 and the second walking bracket 2. There are two first vertical movement assemblies 6 and they are symmetrically arranged; similarly, the components on the first vertical movement assembly 6 are also symmetrically arranged; a third lateral movement assembly 7 is installed on the first vertical movement assembly 6, and a first side nozzle 71, a first upward nozzle 72 and a first inward nozzle 73 are installed at the end of the third lateral movement assembly 7; in specific applications, the first side nozzle 71, the first upward nozzle 72 and the first inward nozzle 73 can be reasonably arranged and set according to the actual situation to have a reasonable installation position.

[0030] The first vertical movement assembly 6 and the third lateral movement assembly 7 drive the above three nozzles to move vertically and horizontally, so that multiple surfaces can be sprayed, such as: two side surfaces, the bottom surface and the front surface.

[0031] Specifically, if two side surfaces need to be sprayed, the first vertical movement assembly 6 moves the first side nozzle 71 in a vertical reciprocating motion, and the third lateral movement assembly 7 controls the distance between the first side nozzle 71 and the large steel member 3; the first walking bracket 1 and the second walking bracket 2 drive it to move longitudinally.

[0032] If the bottom surface needs to be spray-painted, the first vertical movement component 6 moves the first upward nozzle 72 to the bottom surface of the large steel member 3. The third horizontal movement component 7 drives the first upward nozzle 72 to move horizontally back and forth. The movement range of the third horizontal movement component 7 preferably can cover half of the large steel member 3. If it cannot cover half of the large steel member 3, the middle part may not be spray-painted due to the stroke, and it can be spray-painted manually or the second cross bar 5 in the following can be added as an auxiliary.

[0033] The above-mentioned bottom surface spray-painting is mainly for large steel members 3 with a curved arc-shaped bottom, steel members with a cantilever structure, and large steel members with a sunken structure at the bottom.

[0034] If it is a large steel member 3 with a sunken structure at the bottom, the front surface also needs to be spray-painted; the first vertical movement component 6 and the third horizontal movement component 7 cooperate to drive the first inward nozzle 73 for spray-painting.

[0035] If the stroke at the bottom is long and the stroke of the third horizontal movement component 7 is not enough, the second cross bar 5 is needed; and there is an arc-shaped structure at the bottom; the structure on the second cross bar 5 can complement the first vertical movement component 6 and the third horizontal movement component 7 to make its function more perfect.

[0036] Specifically, a second cross bar 5 is sleeved between the first walking bracket 1 and the second walking bracket 2. The second cross bar 5 is similar to the first cross bar 4 and can be understood in the same way, but the specific structures are different; the second cross bar 5 is located below the large steel member 3 and is used for spray-painting the lower side of the large steel member 3; a second horizontal movement component 51 is installed on the second cross bar 5, a second vertical movement component 52 is installed on the second horizontal movement component 51, and a second upward nozzle 53 is installed at the end of the second vertical movement component 52. The second horizontal movement component 51 and the second vertical movement component 52 respectively drive the second upward nozzle 53 to move horizontally and vertically.

[0037] Driven by the second horizontal movement component 51 and the second vertical movement component 52, the second upward nozzle 53 can spray-paint the bottom arc surface and the concave surface, and can adapt to various situations at the bottom of the large steel member 3.

[0038] In order to realize the longitudinal movement of the first walking bracket 1 and the second walking bracket 2, and maintain the movement direction and the stability of the movement, limit wheels 8 are installed on the inner sides of the first walking bracket 1 and the second walking bracket 2 facing the large steel member 3. The first walking bracket 1, the second walking bracket 2 and the limit wheels 8 cooperate with each other to move back and forth linearly along the large steel member 3 longitudinally; in order to adapt to more large steel members 3, the limit wheels 8 can move horizontally, so as to adapt to large steel members 3 with inconsistent longitudinal widths. The limit wheels 8 on the left and right are equivalent to clamping the large steel member 3 and rolling longitudinally.

[0039] In other embodiments, the first walking bracket 1 and the second walking bracket 2 both include a first longitudinal rod 11, a driving roller 12 installed at one end of the first longitudinal rod 11, a driven roller 13 installed at the other end of the first longitudinal rod 11, and a first vertical rod 14 installed in the middle of the first longitudinal rod 11; the driving roller 12 drives the driven roller 13 and the limiting wheel 8 to rotate.

[0040] In this embodiment, in order to maintain the stability and supporting capacity of the first walking bracket 1 and the second walking bracket 2, multiple diagonal rods are further provided on the first walking bracket 1 and the second walking bracket 2 to make them stable; in this embodiment, in order to reduce the connecting wires, a driving battery is used for power supply, and a driving battery for providing power to the driving roller 12 is installed on the first longitudinal rod 11, and the driving roller 12 drives the driven roller 13 and the limiting wheel 8 to rotate.

[0041] Furthermore, in order to facilitate the adjustment of the vertical heights of the first cross bar 4 and the second cross bar 5 so as to adapt to large steel members 3 of different heights; in this embodiment, the first cross bar 4 is arranged above the second cross bar 5, and both ends of the first cross bar 4 and the second cross bar 5 are sleeved on the first vertical rods 14 on both sides and are vertically adjusted along the first vertical rods 14; both ends of the first cross bar 4 and the second cross bar 5 are provided with hollow sleeves, and the first vertical rods 14 are sleeved inside and fixed with bolts; the specific structure can be optimized according to the actual situation.

[0042] When installation is required, both ends of the first cross bar 4 and the second cross bar 5 are sleeved on the first vertical rods 14 on both sides and fixed with bolts; when adjustment is required, loosen the bolts, vertically move and adjust along the first vertical rods 14, and when reaching the position where installation is required, tighten and fix with bolts.

[0043] Vertical plates 43 are installed at both ends of the first cross bar 4, vertical U-shaped grooves 44 are provided on the vertical plates 43, and a first transverse movement assembly 41 is installed on the vertical U-shaped grooves 44, and the first transverse movement assembly 41 is vertically adjusted along the vertical U-shaped grooves 44; when the first cross bar 4 needs small-range vertical adjustment, the first transverse movement assembly 41 is vertically adjusted along the vertical U-shaped grooves 44; of course, the first cross bar 4 can also adapt to an inclined slope, the first transverse movement assembly 41 is arranged obliquely, and the vertical U-shaped grooves 44 are also arranged obliquely.

[0044] The first lateral movement component 41 can adopt an existing drive component. In this embodiment, the first lateral movement component 41 includes a first lateral rack 411 installed on the vertical U-shaped groove 44. A first rectangular tube 412 is sleeved on the first lateral rack 411. A first motor 413 is installed on one side of the first rectangular tube 412, and a first gear 414 drivenly connected to the first motor 413 is installed inside. The first rectangular tube 412, the first motor 413, and the first gear 414 all reciprocate horizontally along the first lateral rack 411. The first motor 413 can be driven by a battery to reduce the connection of wires. A first downward nozzle 42 and a first radar for sensing the distance from the large steel member 3 are installed at the lower part of the first rectangular tube 412. When the first radar senses that the first downward nozzle 42 reaches a suitable position, the first downward nozzle 42 sprays paint downward. The first downward nozzle 42 and the first radar are used in cooperation and can also be directly purchased as a set.

[0045] Similarly, the second lateral movement component 51 and the second vertical movement component 52 can also adopt existing drive components. In this embodiment, the second lateral movement component 51 includes a second lateral rack 511 installed on the second cross bar 5. A second rectangular tube 512 is sleeved on the second lateral rack 511. A second motor 513 is installed on one side of the second rectangular tube 512, and the second vertical movement component 52 is installed on the other side. A second gear 514 drivenly connected to the second motor 513 is installed inside. The second rectangular tube 512, the second motor 513, the second gear 514, and the second vertical movement component 52 all reciprocate horizontally along the second lateral rack 511. The second motor 513 can be driven by a battery to reduce the connection of wires.

[0046] The second vertical movement component 52 includes a third motor 521 installed on the second rectangular tube 512 and a vertical slider 522 sleeved inside the second rectangular tube 512. The vertical slider 522 moves vertically inside the second rectangular tube 512. A first vertical rack 523 is arranged inside the vertical slider 522. A third gear (not shown in the drawings, and the second gear 514 can be referred to) is meshed inside the first vertical rack 523. The third gear is drivingly connected to the third motor 521. The third motor 521 drives the third gear to rotate. Under the meshing drive of the third gear and the first vertical rack 523, the vertical slider 522 is driven to reciprocate vertically. A second upward nozzle 53 and a second radar for sensing the distance from the large steel member 3 are installed at the upper part of the vertical slider 522. The third motor 521 can be driven by a battery to reduce the connection of wires.

[0047] When the second radar senses that the second upward nozzle 53 reaches the appropriate position, the second upward nozzle 53 sprays paint upward. When the sensing distance of the second radar is too large, the third motor 521 drives the vertical slider 522 to move upward, approaching the large steel member 3. The second upward nozzle 53 and the second radar are used in combination and can also be directly purchased as a complete set. The above structure is applicable to large steel members 3 with steps, grooves or arc surfaces at the bottom.

[0048] Similarly, the first vertical moving component 6 and the third horizontal moving component 7 can also adopt existing driving components. However, in this embodiment, the first vertical moving component 6 includes a second vertical rack 61 installed on the first vertical rod 14. A third rectangular tube 62 is sleeved on the second vertical rack 61. A fourth motor 63 is installed on one side of the third rectangular tube 62, and a third horizontal moving component 7 is installed on the other side. Inside, there is a fourth gear 64 drivingly connected to the fourth motor 63. The third rectangular tube 62, the fourth motor 63, the fourth gear 64 and the third horizontal moving component 7 all move vertically back and forth along the second vertical rack 61, converting the rotational motion of the fourth motor 63 into a linear motion to achieve vertical reciprocating movement. The fourth motor 63 can be battery-driven to reduce the connection of wires.

[0049] The third horizontal moving component 7 includes a connecting block 711 installed on one side of the third rectangular tube 62. The connecting block 711 is used to connect the first vertical moving component 6 and the third horizontal moving component 7. A fifth motor 712 and a horizontal slider 713 sleeved inside the connecting block 711 are installed on the connecting block 711. The horizontal slider 713 moves horizontally inside the connecting block 711. A third horizontal rack 714 is arranged inside the horizontal slider 713. A fifth gear 715 meshes inside the third horizontal rack 714. The fifth gear 715 is drivingly connected to the fifth motor 712. The fifth motor 712 and the fifth gear 715 do not move but only rotate. Under the meshing drive of the fifth gear 715 and the third horizontal rack 714, the rotational motion is converted into a linear motion to drive the horizontal slider 713 to move horizontally back and forth. The fifth motor 712 can be battery-driven to reduce the connection of wires.

[0050] Furthermore, a first side nozzle 71 and a third radar for sensing the distance between the first side nozzle 71 and the side of the large steel member 3 are installed at the end of the horizontal slider 713. When the third radar senses that the distance is insufficient, the fifth motor 712 drives the horizontal slider 713 to move horizontally, approaching the side of the large steel member 3.

[0051] The first side nozzle 71 is provided with a first inward nozzle 73 and a fourth radar for sensing the distance between the first inward nozzle 73 and the front surface of the large steel member 3. When the fourth radar senses that the distance is insufficient, the first walking bracket 1 and the second walking bracket 2 move longitudinally, so that the first inward nozzle 73 approaches the front surface of the large steel member 3.

[0052] The first inward nozzle 73 is provided with a first upward nozzle 72 and a fifth radar for sensing the distance between the first upward nozzle 72 and the bottom surface of the large steel member 3. When the fifth radar senses that the distance is insufficient, the fourth motor 63 drives the third rectangular pipe 62 to move vertically upward, so that the first inward nozzle 73 approaches the bottom surface of the large steel member 3.

[0053] The automatic external painting device provided by the present invention uses wireless communication, remote control for one-key start and stop, automatic multi-surface painting, and automatically recognizes the end of painting by several radars after starting. It is powered by a self-provided battery, and uses radars as the driving and switching signals for motors and automatic nozzle solenoid valves to realize the adjustment of painting actions and the operation of the painting device. A certain pressure of paint (externally prepared) is supplied to the automatic nozzle by an external paint pump, so as to realize the automatic walking and painting of the entire painting device.

[0054] The flat upper surface of the large steel member 3 is placed facing up, and it is placed front and back on the bridge support 31. The automatic external painting device is placed around it. The first cross bar 4 is located above the large steel member 3, the second cross bar 5 is located below the large steel member 3, and the first walking bracket 1 and the second walking bracket 2 are located on both sides of the large steel member 3. The limiting wheel 8 is in contact with the side surface of the large steel member 3 to realize auxiliary support. The first walking bracket 1, the second walking bracket 2 and the first lateral moving assembly 41 comprehensively drive the first downward nozzle 42 to spray paint downward. The first walking bracket 1, the second walking bracket 2, the first vertical moving assembly 6 and the third lateral moving assembly 7 drive the above three nozzles to move longitudinally, vertically and laterally, so that they can spray multiple surfaces, such as: two side surfaces, the bottom surface and the front surface. Driven by the first walking bracket 1, the second walking bracket 2, the second lateral moving assembly 51 and the second vertical moving assembly 52, the second upward nozzle 53 can spray the bottom arc surface and the concave surface, and can adapt to various situations at the bottom of the large steel member 3.

[0055] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. An automatic external painting device for large steel components, characterized by: The invention comprises a first walking bracket (1) installed on one side and a second walking bracket (2) installed on the other side; a large steel component (3) is placed between the first walking bracket (1) and the second walking bracket (2); a first cross bar (4) is installed between the first walking bracket (1) and the second walking bracket (2), the first cross bar (4) is located on the upper side of the large steel component (3), a first lateral moving assembly (41) is installed on the first cross bar (4), and a first downward nozzle (42) is installed on the first lateral moving assembly (41); a first vertical moving assembly (6) is installed on the first vertical moving assembly (6), a third lateral moving assembly (7) is installed on the first vertical moving assembly (6), and a first side nozzle (71), a first upward nozzle (72) and a first inward nozzle (73) are installed at the end of the third lateral moving assembly (7).

2. According to claim 1, the automatic external painting device for large steel components is characterized by: A second cross bar (5) is sleeved between the first walking bracket (1) and the second walking bracket (2); the second cross bar (5) is located at the lower side of the large steel structure (3); a second lateral moving assembly (51) is mounted on the second cross bar (5); the second lateral moving assembly (51) is mounted on a second vertical moving assembly (52); a second upward nozzle (53) is mounted at the end of the second vertical moving assembly (52); the second lateral moving assembly (51) and the second vertical moving assembly (52) respectively drive the second upward nozzle (53) to move lateraly and vertically.

3. According to claim 2, the automatic external painting device for large steel components is characterized by: The first walking bracket (1) and the second walking bracket (2) are both provided with limiting wheels (8) on the inner side facing the large steel component (3); the first walking bracket (1), the second walking bracket (2) and the limiting wheels (8) cooperate with each other to perform reciprocating linear motion along the longitudinal direction of the large steel component (3).

4. The automatic external painting device for large steel components according to claim 3 is characterized in that: The first walking bracket (1) and the second walking bracket (2) both comprise a first longitudinal rod (11), a driving roller (12) mounted at one end of the first longitudinal rod (11), a driven roller (13) mounted at the other end of the first longitudinal rod (11), and a first vertical rod (14) mounted in the middle of the first longitudinal rod (11); the driving roller (12) drives the driven roller (13) and the limiting wheel (8) to rotate.

5. The automatic external painting device for large steel components according to claim 4 is characterized in that: The first cross bar (4) is located above the second cross bar (5); the first cross bar (4) and the second cross bar (5) are both sleeved on the first vertical bars (14) on both sides and are vertically adjusted along the first vertical bars (14).

6. The automatic external painting device for large steel components according to claim 5 is characterized in that: Both ends of the first crossbar (4) are provided with vertical plates (43), a vertical U-shaped groove (44) is provided on the vertical plate (43), a first lateral moving assembly (41) is provided on the vertical U-shaped groove (44), and the first lateral moving assembly (41) is adjusted vertically along the vertical U-shaped groove (44).

7. The automatic external painting device for large steel components according to claim 6 is characterized by: The first transverse moving component (41) comprises a first transverse rack (411) mounted on a vertical U-shaped groove (44); a first rectangular tube (412) is sleeved on the first transverse rack (411); a first motor (413) is mounted on one side of the first rectangular tube (412); a first gear (414) drivingly connected to the first motor (413) is mounted inside the first rectangular tube (412); the first rectangular tube (412), the first motor (413) and the first gear (414) all reciprocate laterally along the first transverse rack (411); a first downward nozzle (42) and a first radar for sensing the distance to a large steel component (3) are mounted at the lower part of the first rectangular tube (412).

8. The automatic external painting device for large steel components according to claim 5 is characterized by: The second transverse moving assembly (51) comprises a second transverse rack (511) mounted on the second crossbar (5); a second rectangular tube (512) is sleeved on the second transverse rack (511); a second motor (513) is mounted on one side of the second rectangular tube (512); a second vertical moving assembly (52) is mounted on the other side; a second gear (514) drivingly connected to the second motor (513) is mounted inside; the second rectangular tube (512), the second motor (513), the second gear (514) and the second vertical moving assembly (52) all reciprocate transversely along the second transverse rack (511); the second vertical moving assembly (52) comprises a second gear (514) mounted on the second crossbar (511); A third motor (521) on the second rectangular tube (512) and a vertical slider (522) sleeved inside the second rectangular tube (512), wherein a first vertical rack (523) is arranged inside the vertical slider (522), a third gear is meshed inside the first vertical rack (523), the third gear is transmission-connected to the third motor (521), the third motor (521) drives the third gear to rotate, and under the meshing transmission of the third gear and the first vertical rack (523), the vertical slider (522) is driven to reciprocate vertically, and a second upward nozzle (53) and a second radar for sensing the distance to the large steel component (3) are installed on the upper part of the vertical slider (522).

9. The automatic external painting device for large steel components according to claim 4 is characterized in that: The first vertical moving assembly (6) comprises a second vertical rack (61) mounted on the first vertical rod (14); a third rectangular tube (62) is sleeved on the second vertical rack (61); a fourth motor (63) is mounted on one side of the third rectangular tube (62); a third lateral moving assembly (7) is mounted on the other side; a fourth gear (64) drivingly connected to the fourth motor (63) is mounted inside; the third rectangular tube (62), the fourth motor (63), the fourth gear (64) and the third lateral moving assembly (7) all reciprocate vertically along the second vertical rack (61); the third lateral moving assembly (7) comprises a connecting block (711) mounted on one side of the third rectangular tube (62); a fifth motor (712) and a lateral sliding block (713) sleeved inside the connecting block (711); the lateral sliding block A third transverse rack (714) is arranged inside the (713), and a fifth gear (715) is meshed inside the third transverse rack (714). The fifth gear (715) is connected to the fifth motor (712) in a transmission manner. The fifth motor (712) drives the fifth gear (715) to rotate. Under the meshing transmission of the fifth gear (715) and the third transverse rack (714), the transverse slider (713) is driven to reciprocate laterally. The end of the transverse slider (713) is provided with a first side nozzle (71) and a third radar for sensing the distance to the large steel component (3); the first side nozzle (71) is provided with a first inward nozzle (73) and a fourth radar for sensing the distance to the large steel component (3); the first inward nozzle (73) is provided with a first upward nozzle (72) and a fifth radar for sensing the distance to the large steel component (3).

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