Efficient spraying device for wear-resistant layer on surface of wear-resistant bushing

Abstract

The utility model belongs to the field of spraying processing technology discloses a kind of high-efficiency spraying processing device for wear-resistant bush surface wear-resistant layer, including bottom plate, and the upper end of bottom plate is fixedly connected with spraying bin, and the both sides of spraying bin are hinged with bin door by hinge, and the rear end of spraying bin is fixedly connected with positioning mechanism, and the positioning mechanism is fixed with bush body outside, and the upper end of spraying bin is provided with moving groove, and the upper end of spraying bin is fixedly connected with spraying assembly. By negative pressure assembly cooperation connecting assembly and positioning assembly, adopt the positioning structure of negative pressure adsorption cooperation magnetic force drive, using flexible contact mode can form firm adsorption force by negative pressure, ensure that bush does not shift, no shaking in the process of rotary spraying, also can avoid scratch or indentation caused by rigid contact to bush surface;By the cooperation of multiple positioning assemblies, it can be applicable to different inner diameter size and specification bush, can be quickly fixed from the inside of bush, facilitate the outer surface of bush to be sprayed operation.

Description

Technical Field

[0001] This utility model relates to the field of spray coating technology, specifically to a high-efficiency spray coating device for a wear-resistant bushing surface wear-resistant layer. Background Technology

[0002] Wear-resistant bushings, as key transmission auxiliary components in industrial equipment, are widely used in machine tools, construction machinery, mining equipment, and general machinery. Their core function is to isolate the direct contact between the shaft and the bearing housing, reducing frictional loss between them, while also providing support and protection for the shaft, thereby extending the service life of the entire transmission system. To effectively improve the wear resistance of bushings, the industry commonly adopts a process of spraying a wear-resistant layer onto the surface of the bushing. By spraying a functional coating with high hardness, high adhesion, and high wear resistance onto the outer surface of the bushing, the bushing's ability to resist wear is significantly enhanced, reducing the frequency of maintenance and cost during equipment operation.

[0003] Chinese Patent Announcement No. CN214107531U discloses an alumina spraying device for bushing spraying. This device uses the telescopic movement of an electric push rod to raise and lower a support plate, bringing the bushing on the support plate closer to the positioning pins. The telescopic movement of a hydraulic push rod facilitates the movement of two positioning pins towards each other, inserting them into the through-hole of the bushing for positioning. The telescopic movement of a pneumatic push rod also raises and lowers the spraying pipe, bringing the nozzle on the lower surface of the spraying pipe closer to the bushing, resulting in better and more uniform spraying. A flexible hose facilitates the delivery of alumina coating from the infusion tube to the spraying pipe. A paint tray allows excess paint residue to fall into the tray during spraying, preventing it from falling onto the spraying box and becoming difficult to clean.

[0004] However, the following defects still exist in the specific implementation process: the device fixes the bushing by rigid clamping, which can easily cause damage to the inner surface of the bushing during the clamping process, and the force control is difficult. If the clamping force is too large, it will aggravate the damage to the inner surface of the bushing, and if the force is too small, the stability of the positioning cannot be guaranteed. At the same time, the device lacks good adaptive adjustment capability and cannot be applied to bushings with different inner diameters and specifications.

[0005] Based on this, this utility model designs an efficient spray coating processing device for the wear-resistant layer on the surface of the wear-resistant bushing to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a high-efficiency spraying device for the wear-resistant layer on the surface of wear-resistant bushings.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A high-efficiency spraying device for a wear-resistant layer on the surface of a wear-resistant bushing includes a base plate, a spraying chamber fixedly connected to the upper end of the base plate, doors hinged to both sides of the spraying chamber, a positioning mechanism fixedly connected to the rear end of the spraying chamber, a bushing body fixedly fixed to the outside of the positioning mechanism, a moving groove opened at the upper end of the spraying chamber, a spraying assembly fixedly connected to the upper end of the spraying chamber, and the positioning mechanism includes a motor, the output end of the motor being fixedly connected to a negative pressure assembly via a coupling, a connecting assembly fixedly connected to the front end of the negative pressure assembly, and multiple positioning assemblies fixedly connected to the inner surface of the connecting assembly. Furthermore, the negative pressure assembly includes an L-shaped plate, a negative pressure pump is fixedly connected to the upper end of the L-shaped plate, a hose is fixedly connected to the output end of the negative pressure pump, and a connecting rod is fixedly connected to the front end of the L-shaped plate. Furthermore, the connecting assembly includes a circular tube, which has a hole on its outside. A positioning tube is fixedly connected to one side of the circular tube, a connecting tube is fixedly connected to the inner surface of the positioning tube, a diversion tube is fixedly connected to and communicates with the outer surface of the connecting tube, and multiple diversion connectors are fixedly connected to and communicates with the inner surface of the diversion tube. Furthermore, the positioning component includes a hollow tube II, an annular electromagnet fixedly connected to the upper end of the hollow tube II, a circular plate I fixedly connected to the inner surface of the annular electromagnet, a magnetic ring slidably connected to the inner cavity of the hollow tube II, a circular plate II fixedly connected to the inner surface of the magnetic ring, a copper tube fixedly connected to the lower end of the circular plate II, a suction cup fixedly connected to the lower end of the copper tube, a spring fixedly connected to the lower end of the circular plate II, and a flexible tube II slidably connected to the inner surface of the circular plate I, with the outer surface of the flexible tube II fixedly connected to and communicating with the inner surface of the copper tube. Furthermore, the spraying assembly includes a protective shell, a second motor fixedly connected to one side of the protective shell, a lead screw fixedly connected to the output end of the second motor via a coupling, two slide rails fixedly connected to the inner cavity of the protective shell, a moving block threadedly connected to the outer surface of the lead screw, sliders fixedly connected to both sides of the moving block, the inner surfaces of the two sliders slidingly connected to the outer surfaces of the two slide rails respectively, an L-shaped plate second fixedly connected to the lower end of the moving block, and a sprayer fixedly connected to one side of the L-shaped plate second. Furthermore, the hollow tube II is fixedly installed on the inner surface of the positioning tube, and the inner surface of the flexible tube II is fixedly connected and communicates with the outer surface of the diverter. Furthermore, the inner surface of the connecting pipe is fixedly connected and communicates with the outer surface of the flexible hose, and the round pipe is fixedly installed on one side of the connecting rod; Furthermore, the protective shell is fixedly installed on the upper end of the spraying chamber, the L-shaped plate is fixedly installed on the output end of the motor via a coupling, and the motor is fixedly installed at the rear end of the spraying chamber.

[0008] Compared with the prior art, the advantages of this utility model are as follows: (1) This solution uses a negative pressure component in conjunction with a connecting component and a positioning component. It adopts a positioning structure that combines negative pressure adsorption with magnetic drive. The flexible contact method can form a stable adsorption force with the help of negative pressure, ensuring that the bushing does not shift or shake during the rotation spraying process. It can also avoid scratches or indentations on the bushing surface caused by rigid contact. It is especially suitable for precision bushing processing with high surface accuracy requirements.

[0009] (2) This solution, through the cooperation of multiple positioning components, makes the device applicable to bushings with different inner diameters and specifications, which facilitates quick fixation from the inside of the bushing and facilitates spraying operations on the outer surface of the bushing.

[0010] (3) This solution uses a positioning mechanism in conjunction with a spraying component to allow the bushing to rotate while the spraying component moves along the axial direction of the bushing during the spraying operation on the outer surface of the bushing. The combination of the two allows the spraying component to quickly and evenly spray the outer surface of the bushing, effectively avoiding spraying blind spots. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the positioning mechanism of this utility model; Figure 3 This is a schematic diagram of the negative pressure component of this utility model; Figure 4 This is a schematic diagram of the connection component of this utility model; Figure 5 This is a schematic diagram of the positioning component of this utility model; Figure 6 This is a schematic diagram of the spraying assembly of this utility model.

[0013] The labels in the diagram represent: 1. Base plate; 2. Spraying chamber; 3. Chamber door; 4. Positioning mechanism; 41. Motor 1; 42. Negative pressure assembly; 421. L-shaped plate 1; 422. Negative pressure pump; 423. Hoses 1; 424. Connecting rod; 43. Connecting assembly; 431. Round pipe 1; 432. Pipe hole; 433. Positioning pipe; 434. Connecting pipe; 435. Diverter pipe; 436. Diverter connector; 44. Positioning assembly; 441. Empty 442. Core tube 2; 443. Ring electromagnet; 444. Circular plate 1; 445. Magnetic ring; 446. Circular plate 2; 447. Copper tube; 448. Suction cup; 449. Spring; 440. Flexible hose 2; 5. Bushing body; 6. Spraying assembly; 61. Protective shell; 62. Motor 2; 63. Lead screw; 64. Slide rail; 65. Moving block; 66. Sliding block; 67. L-shaped plate 2; 68. Sprayer; 7. Moving groove. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0015] The present invention will be further described below with reference to the embodiments.

[0016] In some embodiments, please refer to the appendix to the instruction manual. Figure 1 - Figure 5 A high-efficiency spraying processing device for wear-resistant bushing surface wear-resistant layer includes a base plate 1, a spraying chamber 2 fixedly connected to the upper end of the base plate 1, and a chamber door 3 hinged to both sides of the spraying chamber 2. A positioning mechanism 4 is fixedly connected to the rear end of the spraying chamber 2, and a bushing body 5 is fixedly fixed to the outside of the positioning mechanism 4. A moving groove 7 is opened at the upper end of the spraying chamber 2, and a spraying component 6 is fixedly connected to the upper end of the spraying chamber 2. The positioning mechanism 4 includes a motor 41, which is fixedly installed at the rear end of the spraying chamber 2. A negative pressure component 42 is fixedly connected to the output end of the motor 41 through a coupling. A connecting component 43 is fixedly connected to the front end of the negative pressure component 42, and multiple positioning components 44 are fixedly connected to the inner surface of the connecting component 43.

[0017] The function of the door 3 is to close during the spraying operation to form a closed spraying space, preventing paint droplets from overflowing and polluting the environment, while also isolating external dust from entering, ensuring the cleanliness of the spraying environment, and preventing dust from affecting the adhesion and surface quality of the wear-resistant layer.

[0018] Motor 41 is a Xinje two-phase hybrid stepper motor, which can drive the bushing body 5 to rotate during spraying operations, making the spraying more uniform.

[0019] The negative pressure assembly 42 includes an L-shaped plate 421, which is fixedly installed on the output end of the motor 41 via a coupling. A negative pressure pump 422 is fixedly connected to the upper end of the L-shaped plate 421, and a hose 423 is fixedly connected to the output end of the negative pressure pump 422. A connecting rod 424 is fixedly connected to the front end of the L-shaped plate 421.

[0020] The negative pressure pump 422 is a DC adjustable speed micro negative pressure pump, which can provide a stable suction force for the suction cup 447.

[0021] Both hose 1 (423) and hose 2 (449) are made of oil-resistant and aging-resistant rubber tubing, which has good flexibility and sealing properties. They can adapt to deformation and prevent the oily components of the coating from corroding the pipe wall. Hose 2 (449) can transmit the negative pressure distributed by the diverter 436 to the copper pipe 446.

[0022] The connecting assembly 43 includes a circular tube 431, which is fixedly installed on one side of the connecting rod 424. A pipe hole 432 is opened on the outside of the circular tube 431. A positioning tube 433 is fixedly connected to one side of the circular tube 431. A connecting tube 434 is fixedly connected to the inner surface of the positioning tube 433. The inner surface of the connecting tube 434 is fixedly connected to and communicates with the outer surface of the flexible hose 423. A diversion tube 435 is fixedly connected to and communicates with the outer surface of the connecting tube 434. A plurality of diversion connectors 436 are fixedly connected to and communicates with the inner surface of the diversion tube 435.

[0023] The positioning component 44 includes a hollow tube 441, which is fixedly installed on the inner surface of the positioning tube 433. An annular electromagnet 442 is fixedly connected to the upper end of the hollow tube 441. A circular plate 443 is fixedly connected to the inner surface of the annular electromagnet 442. A magnetic ring 444 is slidably connected to the inner cavity of the hollow tube 441. A circular plate 445 is fixedly connected to the inner surface of the magnetic ring 444. A copper tube 446 is fixedly connected to the lower end of the circular plate 445. A suction cup 447 is fixedly connected to the lower end of the copper tube 446. A spring 448 is fixedly connected to the lower end of the circular plate 445. A flexible hose 449 is slidably connected to the inner surface of the circular plate 443. The inner surface of the flexible hose 449 is fixedly connected to and communicates with the outer surface of the diverter 436. The outer surface of the flexible hose 449 is fixedly connected to and communicates with the inner surface of the copper tube 446.

[0024] The toroidal electromagnet 442 is a DC toroidal electromagnet. When energized, it generates magnetic force, which can repel the magnetic ring 444 from sliding along the hollow tube. When the power is turned off, the magnetic force disappears, and the magnetic ring 444 can be reset by the action of the spring 448.

[0025] The magnetic ring 444 is made of neodymium iron boron permanent magnet material, which has strong magnetism and good stability. Its magnetism is opposite to that produced by the ring electromagnet 442 when energized.

[0026] The suction cup 447 is made of nitrile rubber, which has excellent elasticity and sealing properties. It can fit tightly against the inner surface of the bushing body 5 and achieve bushing positioning through negative pressure adsorption. At the same time, the rubber material is soft and will not cause scratches or indentations on the bushing surface.

[0027] In this embodiment of the utility model, by opening the doors 3 on both sides of the spraying chamber 2, the bushing body 5 to be sprayed is placed on the outside of multiple positioning components 44. The annular electromagnet 442 is energized, and the annular electromagnet 442 generates magnetic force after being energized. The magnetic force repels the magnetic ring 444 to slide away from the annular electromagnet 442 along the inner cavity of the hollow tube 441. The magnetic ring 444 drives the circular plate 445 fixedly connected to it to move synchronously. The circular plate 445 then drives the copper tube 446 at the lower end to move together with the suction cup 447 until the suction cup 447 is in close contact with the inner surface of the bushing body 5. During this process, the circular plate 445 will compress the spring 448.

[0028] By activating the negative pressure pump 422, a stable negative pressure is generated and transmitted through the first hose 423 to the connecting pipe 434 in the connecting assembly 43. The connecting pipe 434 guides the negative pressure into the diversion pipe 435 connected to it. The negative pressure inside the diversion pipe 435 is evenly distributed to the second hose 449 of each positioning assembly 44 through multiple diversion joints 436. The second hose 449 transmits the negative pressure to the inside of the copper pipe 446. The copper pipe 446 then guides the negative pressure into the suction cup 447, so that a negative pressure cavity is formed between the suction cup 447 and the inner surface of the bushing body 5. Under the action of atmospheric pressure, the suction cup 447 firmly adheres to the bushing body 5, and stabilizes it from the bushing body 5 to prevent the bushing from shifting or shaking during the subsequent spraying process. At this time, the chamber doors 3 on both sides of the spraying chamber 2 can be closed.

[0029] By starting motor 41, the output end of motor 41 drives the L-shaped plate 421 in negative pressure assembly 42 to rotate through coupling. L-shaped plate 421 drives the connecting rod 424 at the front end to rotate synchronously. Connecting rod 424 drives the round tube 431 of connecting assembly 43 to rotate. Round tube 431 drives the positioning tube 433 fixedly connected to it to rotate. Positioning tube 433 then drives multiple positioning assemblies 44 to rotate. Positioning assembly 44 drives bushing body 5 to rotate at a preset speed through suction cup 447, providing a rotational basis for subsequent uniform spraying of wear-resistant layer.

[0030] In some embodiments, such as Figure 1 and Figure 6As shown, in a preferred embodiment of this utility model, the spraying assembly 6 includes a protective shell 61, which is fixedly installed on the upper end of the spraying chamber 2. A motor 62 is fixedly connected to one side of the protective shell 61. A lead screw 63 is fixedly connected to the output end of the motor 62 through a coupling. Two slide rails 64 are fixedly connected to the inner cavity of the protective shell 61. A moving block 65 is threadedly connected to the outer surface of the lead screw 63. Slider blocks 66 are fixedly connected to both sides of the moving block 65. The inner surfaces of the two sliders 66 are slidably connected to the outer surfaces of the two slide rails 64 respectively. An L-shaped plate 67 is fixedly connected to the lower end of the moving block 65. A sprayer 68 is fixedly connected to one side of the L-shaped plate 67.

[0031] Motor 62 is a Xinje small stepper motor. After starting, it can drive the lead screw 63 to rotate, which indirectly realizes the forward and reverse movement and positioning of the sprayer 68 along the slide rail 64, ensuring that the spraying range covers the entire bushing.

[0032] The sprayer 68 uses a Graco electric high-pressure airless sprayer, which can control the paint output through analog signals from a PLC.

[0033] In this embodiment of the utility model, by starting the second motor 62, the output end of the second motor 62 drives the lead screw 63 to rotate through the coupling. Since the moving block 65 is connected to the lead screw 63 by a thread, and the sliders 66 on both sides of the moving block 65 are in sliding engagement with the slide rail 64 in the inner cavity of the protective shell 61, the rotational motion of the lead screw 63 is converted into the linear movement of the moving block 65 along the slide rail 64. The moving block 65 drives the lower L-shaped plate 67 to move synchronously. The L-shaped plate 67 then drives the sprayer 68 to move smoothly along the moving groove 7 at the upper end of the spraying chamber 2, ensuring that the sprayer 68 can evenly spray the paint to cover the outer surface of the bushing, thus completing the spraying operation.

[0034] It should be noted that the motor 41, motor 62, sprayer 68, negative pressure pump 422, and annular electromagnet 442 in this utility model are powered by a power supply and controlled by a controller, which is an INVT PLC.

[0035] It should be noted that the specific installation methods, circuit connection methods, and control methods of motor 41, motor 62, sprayer 68, negative pressure pump 422, and annular electromagnet 442 in this utility model are all conventional designs, and will not be described in detail in this utility model.

[0036] Working principle: Open the doors 3 on both sides of the spraying chamber 2, and place the bushing body 5 to be sprayed onto the outside of multiple positioning components 44. At this time, the PLC controller controls the annular electromagnet 442 to be energized. After the annular electromagnet 442 is energized, it generates magnetic force. The magnetic force repels the magnetic ring 444 to slide away from the annular electromagnet 442 along the inner cavity of the hollow tube 441. The magnetic ring 444 drives the circular plate 445 fixedly connected to it to move synchronously. The circular plate 445 then drives the copper tube 446 at the lower end to move together with the suction cup 447 until the suction cup 447 is in close contact with the inner surface of the bushing body 5. During this process, the circular plate 445 will compress the spring 448.

[0037] When the suction cup 447 contacts the inner surface of the bushing body 5, the negative pressure pump 422 is started. The negative pressure pump 422 starts and generates a stable negative pressure. This negative pressure is transmitted through the first hose 423 to the connecting pipe 434 in the connecting assembly 43. The connecting pipe 434 guides the negative pressure into the diversion pipe 435 connected to it. The negative pressure inside the diversion pipe 435 is evenly distributed to the second hose 449 of each positioning assembly 44 through multiple diversion joints 436. The second hose 449 transmits the negative pressure to the inside of the copper pipe 446. The copper pipe 446 then guides the negative pressure into the suction cup 447, so that a negative pressure cavity is formed between the suction cup 447 and the inner surface of the bushing body 5. Under the action of atmospheric pressure, the suction cup 447 firmly adheres to the bushing body 5 and stabilizes it from the bushing body 5, preventing the bushing from shifting or shaking during the subsequent spraying process. At this time, the chamber doors 3 on both sides of the spraying chamber 2 can be closed.

[0038] After positioning is completed, the spraying preparation stage begins. The PLC controller starts motor 41, and the output end of motor 41 drives the L-shaped plate 421 in the negative pressure assembly 42 to rotate through the coupling. The L-shaped plate 421 drives the connecting rod 424 at the front end to rotate synchronously. The connecting rod 424 then drives the round tube 431 of the connecting assembly 43 to rotate. The round tube 431 drives the positioning tube 433 fixedly connected to it to rotate. The positioning tube 433 then drives multiple positioning assemblies 44 to rotate. The positioning assembly 44 drives the bushing body 5 to rotate at a preset speed through the suction cup 447, providing a rotational basis for the subsequent uniform spraying of the wear-resistant layer. Simultaneously, the PLC controller sends a start signal to motor 62. The output of motor 62 drives the lead screw 63 to rotate through the coupling. Since the moving block 65 is connected to the lead screw 63 by a thread, and the sliders 66 on both sides of the moving block 65 slide in cooperation with the slide rail 64 in the inner cavity of the protective shell 61, the rotational motion of the lead screw 63 is converted into the linear movement of the moving block 65 along the slide rail 64. The moving block 65 drives the lower L-shaped plate 67 to move synchronously. The L-shaped plate 67 then drives the sprayer 68 to move smoothly along the moving groove 7 at the upper end of the spraying chamber 2, ensuring that the sprayer 68 can evenly spray paint to cover the outer surface of the bushing, thus completing the spraying operation.

[0039] After the spraying operation is completed, the device enters the reset and part removal stage. The PLC controller controls the sprayer 68 to stop spraying paint, and then sends a reverse signal to the second motor 62. The second motor 62 drives the lead screw 63 to reverse, so that the moving block 65 drives the sprayer 68 back to the initial position along the slide rail 64, waiting for the next spraying. Then, the first motor 41 is controlled to stop rotating, and the bushing body 5 stops rotating together with the positioning component 44. Then, the negative pressure pump 422 is controlled to stop working, so that the negative pressure inside the suction cup 447 gradually disappears and the suction force is released. The annular electromagnet 442 is controlled to be de-energized, and the magnetism of the annular electromagnet 442 disappears. The magnetic ring 444 will reset under the combined action of the second circular plate 445 and the spring 448, so that the suction cup 447 is completely separated from the inner surface of the bushing body 5. At this time, the operator opens the chamber door 3 and removes the sprayed bushing body 5 from the positioning mechanism 4.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-efficiency spraying device for a wear-resistant layer on the surface of a wear-resistant bushing, comprising a base plate (1), characterized in that: The base plate (1) is fixedly connected to the upper end of the spraying chamber (2). Both sides of the spraying chamber (2) are hinged with chamber doors (3). The rear end of the spraying chamber (2) is fixedly connected to the positioning mechanism (4). The positioning mechanism (4) is fixedly connected to the bushing body (5). The upper end of the spraying chamber (2) is provided with a moving groove (7). The upper end of the spraying chamber (2) is fixedly connected to the spraying assembly (6). The positioning mechanism (4) includes a motor (41). The output end of the motor (41) is fixedly connected to a negative pressure assembly (42) through a coupling. The front end of the negative pressure assembly (42) is fixedly connected to a connecting assembly (43). The inner surface of the connecting assembly (43) is fixedly connected to multiple positioning assemblies (44).

2. The high-efficiency spraying device for the wear-resistant layer on the surface of the wear-resistant bushing according to claim 1, characterized in that: The negative pressure assembly (42) includes an L-shaped plate (421), a negative pressure pump (422) is fixedly connected to the upper end of the L-shaped plate (421), a hose (423) is fixedly connected to the output end of the negative pressure pump (422), and a connecting rod (424) is fixedly connected to the front end of the L-shaped plate (421).

3. The high-efficiency spraying device for the wear-resistant layer on the surface of the wear-resistant bushing according to claim 2, characterized in that: The connecting assembly (43) includes a circular tube (431), with a pipe hole (432) on the outside of the circular tube (431). A positioning tube (433) is fixedly connected to one side of the circular tube (431), and a connecting tube (434) is fixedly connected to the inner surface of the positioning tube (433). A diversion tube (435) is fixedly connected to and communicates with the outer surface of the connecting tube (434), and a plurality of diversion connectors (436) are fixedly connected to and communicate with the inner surface of the diversion tube (435).

4. The high-efficiency spraying device for the wear-resistant layer on the surface of the wear-resistant bushing according to claim 3, characterized in that: The positioning component (44) includes a hollow tube two (441), an annular electromagnet (442) is fixedly connected to the upper end of the hollow tube two (441), a circular plate one (443) is fixedly connected to the inner surface of the annular electromagnet (442), a magnetic ring (444) is slidably connected to the inner cavity of the hollow tube two (441), a circular plate two (445) is fixedly connected to the inner surface of the magnetic ring (444), a copper tube (446) is fixedly connected to the lower end of the circular plate two (445), a suction cup (447) is fixedly connected to the lower end of the copper tube (446), a spring (448) is fixedly connected to the lower end of the circular plate two (445), a flexible tube two (449) is slidably connected to the inner surface of the circular plate one (443), and the outer surface of the flexible tube two (449) is fixedly connected to and communicates with the inner surface of the copper tube (446).

5. The high-efficiency spraying device for the wear-resistant layer on the surface of the wear-resistant bushing according to claim 2, characterized in that: The spraying assembly (6) includes a protective shell (61), a motor (62) is fixedly connected to one side of the protective shell (61), a lead screw (63) is fixedly connected to the output end of the motor (62) through a coupling, two slide rails (64) are fixedly connected to the inner cavity of the protective shell (61), a moving block (65) is threadedly connected to the outer surface of the lead screw (63), and sliders (66) are fixedly connected to both sides of the moving block (65). The inner surfaces of the two sliders (66) are slidably connected to the outer surfaces of the two slide rails (64), and an L-shaped plate (67) is fixedly connected to the lower end of the moving block (65). A sprayer (68) is fixedly connected to one side of the L-shaped plate (67).

6. The high-efficiency spraying device for the wear-resistant layer on the surface of the wear-resistant bushing according to claim 4, characterized in that: The hollow tube 2 (441) is fixedly installed on the inner surface of the positioning tube (433), and the inner surface of the flexible tube 2 (449) is fixedly connected and communicates with the outer surface of the diverter (436).

7. The high-efficiency spraying device for the wear-resistant layer on the surface of the wear-resistant bushing according to claim 3, characterized in that: The inner surface of the connecting pipe (434) is fixedly connected to and communicates with the outer surface of the first flexible hose (423), and the first round pipe (431) is fixedly installed on one side of the connecting rod (424).

8. The high-efficiency spraying device for the wear-resistant layer on the surface of the wear-resistant bushing according to claim 5, characterized in that: The protective shell (61) is fixedly installed on the upper end of the spraying chamber (2), the L-shaped plate (421) is fixedly installed on the output end of the motor (41) through a coupling, and the motor (41) is fixedly installed at the rear end of the spraying chamber (2).

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