An automatic spraying device for zinc oxide resistors in lightning arresters

Abstract

The present invention discloses an automatic spraying device for zinc oxide resistors of lightning arresters, and relates to the technical field related to spraying. The automatic spraying device for zinc oxide resistors of lightning arresters comprises a retention box and a support leg fixed to the bottom of the retention box for fixing, and also comprises a conveying platform fixed on one side of the retention box, a pushing port is provided on the retention box, a pushing plate is installed between the pushing port and the sliding of the conveying platform, a No. 2 electric push rod is fixed on both sides of the conveying platform, and the movable rods of the two No. 2 electric push rods are fixed to the ends of the pushing plates, and a spraying mechanism is installed on the conveying platform, which realizes pushing the resistor body stored in the retention box to the through-port position in sequence by driving the pushing plate forward and backward, and then spraying the resistor body by the spraying mechanism, and after completing the spraying operation, it is pushed to the conveying assembly to be transported to the next process.

Description

Technical Field

[0001] The present invention relates to the technical field related to spraying, and in particular to an automatic spraying device for zinc oxide resistor sheets of a lightning arrester. Background Art

[0002] The function of a lightning arrester is to protect various electrical equipment in the power system from damage caused by lightning overvoltage, operating overvoltage, and power frequency transient overvoltage.

[0003] The main types of lightning arresters include protective gaps, valve-type lightning arresters, and zinc oxide lightning arresters. Protective gaps are mainly used to limit atmospheric overvoltages and are generally used for protection of distribution systems, lines, and substation incoming line segments. Valve-type lightning arresters and zinc oxide lightning arresters are used to protect substations and power plants. In systems of 500kV and below, they are mainly used to limit atmospheric overvoltages. In ultra-high voltage systems, they are also used to limit internal overvoltages or serve as backup protection for internal overvoltages.

[0004] A crucial component of a lightning arrester is the internal resistor. To prevent rust from forming over time, which could affect the arrester's function, the internal and external surfaces of the resistor are typically coated with a specific coating during production. This not only prevents rust but also improves the arrester's stability.

[0005] The search disclosed a clamping mechanism and a cross-section spraying device for zinc oxide resistors used in lightning arresters, with publication number CN219816721U, and a cross-section aluminum spraying device for zinc oxide resistors, with publication number CN214107587U.

[0006] Including but not limited to the above two patents, both of them are for spraying the end faces of the resistor, that is, the top and the bottom. Therefore, the above patents cannot achieve the problem raised by this application "spraying specific coatings on the inner and outer walls of the resistor."

[0007] Moreover, the above patent adopts a clamping or flipping method for spraying, and cannot be associated with the spraying of inner and outer walls. Summary of the Invention

[0008] In view of the deficiencies of the prior art, the present invention provides an automatic spraying device for zinc oxide resistors of lightning arresters, which solves the problem of spraying specific coatings on the inner and outer walls of the resistors.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic spraying device for zinc oxide resistor sheets of a lightning arrester, comprising a retention box and a support leg fixed to the bottom of the retention box for fixing, and further comprising:

[0010] A conveying platform is fixed to one side of the retention box. A pushing port is opened on the retention box. A pushing plate is slidably installed between the pushing port and the conveying platform. Two electric push rods are fixed on both sides of the conveying platform. The movable rods of the two electric push rods are fixed to the ends of the pushing plate. A spraying mechanism is installed on the conveying platform.

[0011] A through port is provided on the conveying platform, and a driving mechanism is installed on the bottom of the retention box just below the through port, and the driving mechanism cooperates with the spraying mechanism to complete the spraying work on the inner wall and the outer wall of the resistor body;

[0012] A conveying assembly is installed on one side of the retention box and cooperates with the conveying platform.

[0013] Furthermore, the conveying assembly includes a conveying frame arranged on one side of the retention box, and conveying rollers are rotatably installed at both ends of the conveying frame, and the two conveying rollers are connected by a conveyor belt;

[0014] A No. 1 motor is fixed on the conveyor frame, and an output shaft of the No. 1 motor is coaxially fixed to one of the conveyor rollers;

[0015] The conveyor belt is provided with through holes at equal intervals along the conveying pattern, and a plurality of fans are installed in the conveyor frame.

[0016] Furthermore, the driving mechanism includes a receiving frame fixed to the bottom of the conveying platform, a driving sleeve is rotatably mounted on the receiving frame, and the driving sleeve is coaxially arranged with the through port;

[0017] A bearing base pipe is slidably mounted in the driving sleeve, and the bearing base pipe and the driving sleeve are engaged with each other via a transmission member;

[0018] The transmission member comprises a plurality of transmission bars fixed to the outer wall of the supporting base tube at equal intervals around the circumference, and the transmission bars are slidably engaged with the transmission grooves provided on the inner wall of the driving sleeve;

[0019] An adsorption assembly is installed on the supporting base tube, and the supporting base tube is also connected to the pushing plate through a lifting assembly;

[0020] The driving sleeve is connected to a driving member installed at the bottom of the conveying platform.

[0021] Furthermore, the adsorption assembly includes a plurality of suction cups fixed on the supporting base tube at equal intervals around the circumference, and also includes a negative pressure extraction unit fixed on the bottom of the conveying platform. The plurality of suction cups are connected and communicated with the negative pressure extraction unit through a negative pressure air pipe.

[0022] Furthermore, the lifting assembly includes a transmission frame rotatably mounted on the bearing base pipe, and pulling cables are fixed on both sides of the top of the transmission frame;

[0023] Winding rollers are rotatably installed on both sides of the conveying platform. The pulling steel cable is wound onto the winding rollers through multiple guide wheels rotatably installed on the conveying platform. The two winding rollers are connected to the pushing plate through symmetrically arranged transmission components.

[0024] Furthermore, the transmission assembly includes a worm wheel coaxially fixed to the winding roller, a worm screw cooperating with the worm wheel is rotatably mounted on one side of the worm wheel, and a ratchet wheel No. 1 is coaxially fixed to the worm screw;

[0025] The conveying platform is also rotatably mounted with a gear set, the gear set comprising a first gear and a second gear meshing with each other, a second ratchet is coaxially fixed to the first gear, and the second gear is connected to the worm through a transmission chain;

[0026] A push-pull plate fixed to the pushing plate is slidably mounted on the conveying platform, and a ratchet pawl that unidirectionally cooperates with the second ratchet or the first ratchet is mounted on the push-pull plate.

[0027] Furthermore, the spraying mechanism includes a support frame fixed on the conveying platform, on which two synchronously driven No. 1 electric push rods are fixed, and an outer wall spraying part is fixed on the movable rods of the two No. 1 electric push rods, and a No. 1 nozzle is arranged on one side of the outer wall spraying part;

[0028] An inner wall spraying part in communication with the outer wall spraying part is also fixed on the outer wall spraying part, and a second nozzle is arranged at the end of the inner wall spraying part.

[0029] Furthermore, an embedding groove is provided on the top of the supporting base tube, a baffle is slidably installed in the embedding groove, a spring is fixed to the bottom of the baffle, one end of the spring is fixed to the bottom of the embedding groove, and the other end is fixed to the bottom of the baffle.

[0030] Furthermore, a gap portion is provided on the conveying platform, and the gap portion is coaxially arranged with the through opening;

[0031] The end of the conveying platform is further provided with an inclined portion.

[0032] The present invention has the following beneficial effects:

[0033] 1. The automatic spraying device for zinc oxide resistors of lightning arresters pushes the resistor bodies stored in the retention box to the opening position in sequence by driving the push plate forward and backward, and then sprays the resistor bodies through the spraying mechanism. After the spraying operation is completed, it is pushed to the conveying component to be transported to the next process.

[0034] 2. The automatic spraying device for zinc oxide resistors of lightning arresters transports the sprayed resistor body through a conveying component, and dries the paint attached to the resistor body during the transportation process.

[0035] 3. The automatic spraying device for zinc oxide resistors of lightning arresters can realize that after the resistor body is pushed to the opening position, it is adsorbed by the suction cup through the driving mechanism, and the rotation of the supporting base tube drives the resistor body to rotate at a uniform speed.

[0036] Fourth, the automatic spraying device for zinc oxide resistor sheets of the lightning arrester can convert the forward and backward force into the force to drive the bearing base tube and descend through the transmission component. This design can reduce the debugging cost while achieving better coordination.

[0037] 5. The automatic spraying device for zinc oxide resistors of lightning arresters can realize synchronous spraying of the inner and outer walls of the resistor body through the spraying mechanism, and can realize circumferential spraying of the inner and outer walls of the resistor body in cooperation with the driving mechanism.

[0038] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0040] Figure 2 For the present invention Figure 1 A schematic diagram of the structure in another direction;

[0041] Figure 3 For the present invention Figure 1 A structural diagram from another angle;

[0042] Figure 4 An exploded view of the conveying assembly of the present invention;

[0043] Figure 5 It is a cross-sectional view of the retention box and the conveying platform in the present invention;

[0044] Figure 6 For the present invention Figure 5 A schematic diagram of the structure in another direction;

[0045] Figure 7 Schematic diagram of the structure of the spray assembly in the present invention;

[0046] Figure 8 For the present invention Figure 7 Exploded view of

[0047] Figure 9 It is a structural schematic diagram of the transmission assembly in the present invention;

[0048] Figure 10 For the present invention Figure 9 A magnified view of the local structure at point A;

[0049] Figure 11 For the present invention Figure 9 A magnified view of the local structure at point B in the middle;

[0050] Figure 12 For the present invention Figure 9 A structural diagram from another angle;

[0051] Figure 13 For the present invention Figure 12 A magnified view of the local structure at point C in the middle;

[0052] Figure 14 This is an exploded view of the driving mechanism of the present invention;

[0053] Figure 15 It is a schematic diagram of the spraying state of the spraying mechanism in the present invention.

[0054] In the figure: 1. Retention box; 101. Conveyor platform; 102. Gap portion; 103. Inclined portion; 104. Through port; 2. Push plate; 3. Support frame; 301. Storage box; 302. No. 1 electric push rod; 303. Conveyor pipe; 304. Outer wall spraying parts; 305. Inner wall spraying parts; 306. No. 1 nozzle; 307. No. 2 nozzle; 308. Reinforcement frame; 309. Lead-out bucket; 4. Conveyor frame; 401. Conveyor belt; 402. Conveyor roller; 403. No. 1 motor; 404. Fan; 5. Resistor body; 6. Undertaking frame; 601. Supporting base pipe; 602. No. 2 motor; 603, transmission shaft; 604, bevel gear set; 605, driving gear; 606, driven gear ring; 607, transmission frame; 608, vacuum pump unit; 609, suction cup; 6010, baffle; 6011, spring; 6012, transmission bar; 6013, transmission groove; 6014, drive sleeve; 7, No. 2 electric push rod; 701, push-pull plate; 702, No. 1 ratchet; 703, transmission chain; 704, worm; 705, worm wheel; 706, winding rod; 707, pulling cable; 708, guide wheel; 709, No. 2 ratchet; 7010, gear set. DETAILED DESCRIPTION

[0055] The following is based on Figures 1-15 The invention describes an automatic spraying device for zinc oxide resistor sheets of a lightning arrester provided by an embodiment of the invention.

[0056] See also Figures 1-15The embodiment of the present invention provides a technical solution: an automatic spraying device for zinc oxide resistor sheets of a lightning arrester, comprising a retention box 1 and a support leg fixed to the bottom of the retention box 1 for fixing, and also comprising a conveying platform 101 fixed to one side of the retention box 1, a through port 104 opened on the conveying platform 101, and a conveying assembly. A push port is opened on the retention box 1, and a push plate 2 is slidably installed between the push port and the conveying platform 101. No. 2 electric push rods 7 are fixed on both sides of the conveying platform 101, and the movable rods of the two No. 2 electric push rods 7 are fixed to the ends of the push plate 2. A spraying mechanism is installed on the conveying platform 101.

[0057] A driving mechanism is installed at the bottom of the retention box 1 just below the through port 104 , and the driving mechanism cooperates with the spraying mechanism to complete the spraying work on the inner and outer walls of the resistor body 5 .

[0058] The conveying assembly is installed on one side of the retention box 1 and cooperates with the conveying platform 101.

[0059] In the embodiment of the present invention, the resistor body 5 is sequentially placed into the retention box 1 for stacking by a related placing device, and then the push plate 2 is driven to slide along its length direction by the operation of the second electric push rod 7 .

[0060] The resistor body 5 at the bottom of the retention box 1 will be pushed to the position of the through opening 104 by the pushing plate 2. During this process, the resistor body 5 in the retention box 1 that has not entered the push opening position is blocked. When the pushing plate 2 moves back and forth to the starting position of the stroke, the blocking of the resistor body 5 in the retention box 1 is released, and the resistor body 5 in the retention box 1 naturally falls to the push opening position. The reciprocating movement of the pushing plate 2 can realize the sequential pushing of the resistor body 5 in the retention box 1.

[0061] Through the cooperation of the spraying mechanism and the driving mechanism, a resistor body 5 at the position of the through opening 104 is driven to rise slightly and rotate at the same time, thereby achieving the spraying work on the inner wall and the outer wall of the resistor body 5.

[0062] Secondly, after the spraying work on the resistor body 5 is completed, the resistor body 5 after spraying will be pushed onto the conveying assembly through the continued movement of the pushing plate 2, so as to be transported to the subsequent process through the conveying assembly.

[0063] It should be noted that the height of the push port on the retention box 1 is greater than the height of a single resistor body 5 and less than the height of two resistor body 5 .

[0064] The conveying assembly includes a conveying frame 4 arranged on one side of the retention box 1. Conveying rollers 402 are rotatably installed at both ends of the conveying frame 4. The two conveying rollers 402 are connected by a conveyor belt 401.

[0065] A No. 1 motor 403 is fixed on the conveyor frame 4 , and an output shaft of the No. 1 motor 403 is coaxially fixed with one of the conveying rollers 402 .

[0066] The conveyor belt 401 is provided with through holes at equal intervals along the conveying path, and a plurality of fans 404 are installed in the conveyor frame 4 .

[0067] In an embodiment of the present invention, when motor No. 1 403 is working, it drives one of the conveying rollers 402 to rotate through its output shaft, so as to drive the conveyor belt 401 to convey through one of the conveying rollers 402, and at the same time drives the other conveying roller 402 to rotate synchronously, so as to drive the conveyor belt 401 to convey through the operation of motor No. 1 403.

[0068] The conveying of the resistor body 5 after processing is achieved by the conveying of the conveying belt 401 and by pushing the pushing plate 2 after spraying onto the conveying belt 401 by the pushing plate 2 .

[0069] The fan 404 can generate cold air or hot air to dry the resistor body 5 conveyed on the conveyor belt 401 .

[0070] It should be further explained that in this embodiment, a DC motor is used as the driving method for motor 403. However, the present invention is not limited to this method and other types of motors, such as stepper motors or servo motors, may also be used, depending on actual production needs and application scenarios. The key is that these motors must be able to meet specific driving requirements and performance standards to ensure the normal operation and efficiency of the entire system.

[0071] The driving mechanism includes a receiving frame 6 fixed to the bottom of the conveying platform 101 , on which a driving sleeve 6014 is rotatably mounted. The driving sleeve 6014 is coaxially arranged with the through opening 104 .

[0072] The bearing base pipe 601 is slidably installed in the driving sleeve 6014 , and the bearing base pipe 601 and the driving sleeve 6014 are engaged with each other via a transmission member.

[0073] The transmission member includes a plurality of transmission bars 6012 fixed to the outer wall of the supporting base pipe 601 at equal intervals around the circumference. The transmission bars 6012 are slidably engaged with transmission grooves 6013 formed on the inner wall of the driving sleeve 6014 .

[0074] An adsorption assembly is installed on the supporting base tube 601 , and the supporting base tube 601 is also connected to the pushing plate 2 via a lifting assembly.

[0075] The driving sleeve 6014 is connected to a driving member installed at the bottom of the conveying platform 101 .

[0076] In an embodiment of the present invention, when the resistor body 5 is pushed to the position of the through opening 104, the supporting base tube 601 is first driven to rise by the lifting assembly, so that the adsorption assembly is driven to rise by the rising of the supporting base tube 601. When the supporting base tube 601 and the adsorption assembly rise to the end of the stroke, the resistor body 5 is slightly lifted up and the resistor body 5 is adsorbed.

[0077] After completing the above process, the driving member works to drive the driving sleeve 6014 to rotate. When the driving sleeve 6014 rotates, the transmission groove 6013 and the transmission bar 6012 cooperate to drive the supporting base tube 601 to rotate. At the same time, the resistor body 5 is driven to rotate through the adsorption component. When the resistor body 5 rotates, the spraying work is performed through the spraying mechanism.

[0078] The effect achieved by the cooperation between the transmission bar 6012 and the transmission groove 6013 is that when the driving sleeve 6014 rotates, the supporting base tube 601 can be synchronously driven to rotate. At the same time, the supporting base tube 601 does not lose the synchronous rotation relationship when sliding along its axial direction.

[0079] It should also be noted that when the supporting base tube 601 rises to the end of its stroke, the top of the supporting base tube 601 is actually in contact with the bottom of the conveying platform 101, which is equivalent to installing a supporting base tube 601 connected to the bottom of the through opening 104. The effect of this state is specifically explained in the spraying mechanism.

[0080] The driving member includes a transmission shaft 603 rotatably mounted on the receiving frame 6 , a driving gear 605 is coaxially fixed to the bottom end of the transmission shaft 603 , and a driven gear ring 606 meshing with the driving gear 605 is coaxially fixed to the driving sleeve 6014 .

[0081] A second motor 602 is fixed at the bottom of the conveying platform 101 , and an output shaft of the second motor 602 is connected to a transmission shaft 603 via a bevel gear set 604 .

[0082] In an embodiment of the present invention, when the second motor 602 is working, its output shaft drives the transmission shaft 603 to rotate through the bevel gear set 604, so as to synchronously drive the driving gear 605 to rotate when the transmission shaft 603 rotates, and then drive the driving sleeve 6014 to rotate through the engagement of the driving gear 605 and the driven gear ring 606.

[0083] During the driving process, the driving gear 605 and the driven gear ring 606 form a large and small gear transmission relationship, thereby achieving the effect of speed reduction and torque increase, making the driving more powerful and stable.

[0084] It should also be noted that the bevel gear set 604 includes two bevel gears meshing with each other, and the two bevel gears are coaxially fixed to the output shaft of the second motor 602 and the transmission shaft 603 respectively.

[0085] The suction assembly includes multiple suction cups 609 equidistantly fixed around the carrier tube 601, and a negative pressure pumping unit 608 fixed to the bottom of the conveyor platform 101. The multiple suction cups 609 are connected to and communicate with the negative pressure pumping unit 608 via a negative pressure air pipe. The negative pressure pumping unit 608 includes a vacuum pump and a negative pressure tank. The vacuum pump input port is connected to the negative pressure tank, and the multiple suction cups 609 are connected to the negative pressure tank via the negative pressure air pipe.

[0086] In an embodiment of the present invention, when the supporting base tube 601 rises to the end of its stroke, multiple suction cups 609 all abut against the bottom of the resistor body 5. The negative pressure pumping unit 608 uses a negative pressure air pipe to pump negative pressure onto the suction cups 609, so that the suction cups 609 adsorb the resistor body 5, causing the resistor body 5 to rotate along with the supporting base tube 601.

[0087] Among them, the adsorption fixation method can be used for rapid fixation when needed, and is more efficient and more accurate than clamping.

[0088] It should be noted that the "negative pressure airway" in the present invention is not shown in the figure.

[0089] The lifting assembly includes a transmission frame 607 rotatably mounted on the supporting base pipe 601 , and pulling cables 707 are fixed on both sides of the top of the transmission frame 607 .

[0090] Winding rollers 706 are rotatably installed on both sides of the conveyor platform 101. The pulling steel cable 707 is wound onto the winding rollers 706 through multiple guide wheels 708 rotatably installed on the conveyor platform 101. The two winding rollers 706 are connected to the push plate 2 through a symmetrically arranged transmission assembly.

[0091] In the embodiment of the present invention, when the pushing plate 2 is working, the winding roller 706 is driven to rotate by the transmission assembly, and the pulling steel cable 707 is wound by the rotation of the winding roller 706, thereby pulling the transmission frame 607 to drive the supporting base pipe 601 to rise upright.

[0092] As is known to all, the debugging of the driving device is relatively cumbersome. In this embodiment, the transmission component is driven to work by the necessary action of pushing the resistor body 5 by the pushing plate 2, and the winding roller 706 is driven to rotate by the transmission component, so that the lifting and lowering of the supporting base tube 601 can be achieved by winding the winding roller 706. The same technical effect can be achieved while reducing the use of driving components.

[0093] The transmission assembly includes a worm wheel 705 coaxially fixed on the winding roller 706. A worm 704 that cooperates with the worm wheel 705 is rotatably mounted on one side of the worm wheel 705. A ratchet wheel 702 is coaxially fixed on the worm 704.

[0094] A gear set 7010 is also rotatably mounted on the conveyor platform 101 . The gear set 7010 includes a first gear and a second gear that mesh with each other. A second ratchet 709 is coaxially fixed to the first gear. The second gear is connected to the worm 704 through a transmission chain 703 .

[0095] A push-pull plate 701 fixed to the pushing plate 2 is slidably mounted on the conveying platform 101 , and a ratchet pawl that unidirectionally cooperates with the second ratchet 709 or the first ratchet 702 is mounted on the push-pull plate 701 .

[0096] In the embodiment of the present invention, when the pushing plate 2 moves, the push-pull plate 701 is driven to follow the synchronous movement.

[0097] When the pushing plate 2 moves, the single resistor body 5 is first pushed to the position of the through port 104. At the same time, the push-pull plate 701 moves synchronously with the pushing plate 2. During this movement, the pawl of the push-pull plate 701 does not have a transmission relationship with the second ratchet 709 and the first ratchet 702. When the resistor body 5 moves to the position of the through port 104, the push-pull plate 701 moves back and forth for a certain distance. During this process, the pawl of the push-pull plate 701 cooperates with the first ratchet 702 to drive the first ratchet 702 and the worm 704 to rotate, so as to drive the worm wheel 705 and the winding roller 706 to rotate through the cooperation between the worm 704 and the worm wheel 705. When the winding roller 706 rotates, the pulling cable 707 is wound, and the corresponding supporting base tube 601 rises.

[0098] Of course, the first ratchet 702 and the second ratchet 709 can be replaced with gears, in which case the pawls need to be replaced with racks, and both the first ratchet 702 and the second ratchet 709 are mounted via a ratchet mechanism to achieve one-way transmission. That is, gears are rotatably mounted on both the worm 704 and the first gear, a rack meshing with the gears is mounted on the push-pull plate 701, and ratchet mechanisms are installed between the worm 704 and the corresponding gear, and between the first gear and the corresponding gear, to achieve one-way transmission.

[0099] Among them, after the resistor body 5 is pushed to the position of the opening 104, the purpose of the reciprocating movement of a certain distance is that since the pushing plate 2 and the resistor body 5 are in abutment relationship when pushing the resistor body 5, the subsequent spraying work is carried out by rotating the resistor body 5, thereby preventing the paint from falling off due to friction between the rotating resistor body 5 and the pushing plate 2 when the paint is not firmly attached.

[0100] After the spraying of the resistor body 5 is completed, the push plate 2 retreats again by a certain distance. This retreat triggers a switch installed at the bottom of the push plate 2 at a specified angle, which in turn sends a command to the negative pressure extraction unit 608, causing the suction cup 609 to disengage from the resistor body 5. After the second retreat, the pawl of the push-pull plate 701 cooperates with the second ratchet 709 to rotate the second ratchet 709. When the second ratchet 709 rotates, it drives the first gear to rotate. At the same time, the engagement of the first gear and the second gear drives the second gear to rotate synchronously in the opposite direction. At the same time, the second gear drives the worm 704 in the opposite direction through the transmission chain 703, and the corresponding worm gear 705 and the winding roller 706 also rotate in the opposite direction. In fact, a reversing valve is set between the negative pressure extraction unit 608 and the suction cup 609. When negative pressure is required, the reversing valve connects the negative pressure extraction unit 608 to the suction cup 609. When pressure relief is required, the reversing valve connects the suction cup 609 to the atmosphere. The switch here is a travel switch, which sends instructions to the reversing valve.

[0101] When the reeling roller 706 rotates in the opposite direction, the pulling steel cable 707 is unwound, and at the same time, under the action of the gravity of the supporting base pipe 601 and related parts on the supporting base pipe 601, the supporting base pipe 601 descends.

[0102] Finally, the pushing plate 2 moves forward to push the sprayed resistor body 5 onto the conveying assembly.

[0103] Among them, when the push plate 2 moves backward, it drives the push-pull plate 701 to move backward, and the pawl of the push-pull plate 701 cooperates with the second ratchet 709 or the first ratchet 702. It can only cooperate with one at a time, and when cooperating with the other, it disengages from the currently cooperating second ratchet 709 or the first ratchet 702.

[0104] It should also be noted that the switches in the present invention are for illustration only, and the present invention does not limit the type of specific switches. Since there are many types of switches in the prior art that are triggered after the push plate 2 moves to a specified position, the present invention does not limit the type or structure of the switch used as long as the desired effect can be achieved.

[0105] The spraying mechanism includes a support frame 3 fixed on the conveying platform 101, on which two synchronously driven No. 1 electric push rods 302 are fixed, and the outer wall spraying parts 304 are fixed on the movable rods of the two No. 1 electric push rods 302, and a No. 1 nozzle 306 is arranged on one side of the outer wall spraying parts 304.

[0106] An inner wall spraying part 305 communicating with the outer wall spraying part 304 is fixed thereon, and a second nozzle 307 is arranged at the end of the inner wall spraying part 305 .

[0107] In an embodiment of the present invention, two material storage boxes 301 are fixed on the support frame 3, and a discharge bucket 309 connected to the bottom of the two material storage boxes 301 is fixed. The discharge bucket 309 is connected to the outer wall spray part 304 through the conveying pipe 303 to supply paint to the outer wall spray part 304 through the material storage box 301 and the conveying pipe 303, and the outer wall spray part 304 is integrated with the power components required for spraying.

[0108] When the outer wall spraying part 304 is working, the resistor body 5 is sprayed through the second nozzle 307 and the first nozzle 306 at the same time.

[0109] See also Figure 15 The angle of the second nozzle 307 is arranged with the middle one gradually tilted toward both sides.

[0110] Among them, when the No. 1 electric push rod 302 is working, the outer wall spraying part 304 is driven to rise / fall by extending / retracting the movable rod. When spraying is required, the outer wall spraying part 304 falls, and the outer wall spraying part 304 rises after spraying is completed. In order to avoid the inner wall spraying part 305 from shaking during the lifting and lowering of the outer wall spraying part 304, which causes the spraying position to change, a reinforcement frame 308 fixed to the inner wall spraying part 305 is installed on the outer wall spraying part 304, and the inner wall spraying part 305 is reinforced by the reinforcement frame 308.

[0111] An embedding groove is provided on the top of the supporting base tube 601 , in which a baffle 6010 is slidably installed. A spring 6011 is fixed to the bottom of the baffle 6010 . One end of the spring 6011 is fixed to the bottom of the embedding groove, and the other end is fixed to the bottom of the baffle 6010 .

[0112] In an embodiment of the present invention, under normal conditions, the baffle 6010 is in contact with the bottom of the conveying platform 101. When the supporting base tube 601 rises, the spring 6011 is compressed, causing the baffle 6010 to shrink into the embedded groove. When the baffle 6010 descends, the elastic potential energy stored when the spring 6011 is compressed is released to drive the baffle 6010 to extend. Through this structure, the baffle 6010 can always be in contact with the bottom of the conveying platform 101.

[0113] The purpose of this abutment is that since the resistor body 5 is sprayed on the inner wall during spraying, a small amount of paint will splash. In order to prevent the paint from affecting the normal operation of the components, the paint is collected through the supporting base tube 601. A sealing cover can be removably installed at the bottom of the supporting base tube 601, and the paint in the supporting base tube 601 can be cleaned by removing the sealing cover.

[0114] Through the above structure, it can be achieved that the through port 104 is always connected with the inside of the carrier base tube 601 .

[0115] A gap portion 102 is provided on the conveying platform 101 , and the gap portion 102 is coaxially arranged with the through opening 104 .

[0116] The end of the conveying platform 101 is further provided with an inclined portion 103 .

[0117] In the embodiment of the present invention, the gap 102 is provided to increase the distance between the resistor body 5 and the inner wall of the conveying platform 101 , thereby preventing friction between the resistor body 5 and the inner wall of the retention box 1 during the spraying process.

[0118] The inclined portion 103 can smoothly push the resistor body 5 onto the conveying assembly after spraying the resistor body 5 is completed.

[0119] When in use (working), the resistor body 5 is pushed to the position of the through opening 104 by the pushing plate 2, and then the resistor body 5 is slightly lifted up by the driving mechanism and the resistor body 5 is adsorbed at the same time. Subsequently, the spraying mechanism descends to spray the inner and outer walls of the resistor body 5, while driving the resistor body 5 to rotate.

[0120] After spraying is completed, the resistor body 5 is pushed to the conveying assembly again by the pushing plate 2, and the conveying assembly conveys the sprayed resistor body 5 to the next process, during which the paint attached to the resistor body 5 is further dried.

Claims

1. An automatic spraying device for zinc oxide resistor sheets of lightning arresters, comprising a retention box (1) and a support leg fixed to the bottom of the retention box (1) for fixing, characterized in that: Also includes: The conveying platform (101) is fixed to one side of the retention box (1). The retention box (1) is provided with a push port. A push plate (2) is slidably installed between the push port and the conveying platform (101). Two electric push rods (7) are fixed on both sides of the conveying platform (101). The movable rods of the two electric push rods (7) are fixed to the ends of the push plate (2). A spraying mechanism is installed on the conveying platform (101); A through port (104) is provided on the conveying platform (101), and a driving mechanism is installed at the bottom of the retention box (1) directly below the through port (104). The driving mechanism cooperates with the spraying mechanism to complete the spraying work on the inner and outer walls of the resistor body (5); A conveying assembly, mounted on one side of the retention box (1) and cooperating with the conveying platform (101); The conveying assembly comprises a conveying frame (4) arranged on one side of the retention box (1), and conveying rollers (402) are rotatably mounted on both ends of the conveying frame (4), and the two conveying rollers (402) are connected by a conveyor belt (401); A No. 1 motor (403) is fixed on the conveyor frame (4), and an output shaft of the No. 1 motor (403) is coaxially fixed to one of the conveyor rollers (402); The conveyor belt (401) is provided with through holes at equal intervals along the conveying path, and a plurality of fans (404) are installed in the conveyor frame (4); The driving mechanism comprises a receiving frame (6) fixed to the bottom of the conveying platform (101), a driving sleeve (6014) being rotatably mounted on the receiving frame (6), and the driving sleeve (6014) being coaxially arranged with the through opening (104); A bearing base tube (601) is slidably mounted in the driving sleeve (6014), and the bearing base tube (601) and the driving sleeve (6014) are engaged via a transmission member; The transmission member comprises a plurality of transmission bars (6012) fixed to the outer wall of the supporting base tube (601) at equal intervals around the circumference, and the transmission bars (6012) are in sliding engagement with transmission grooves (6013) formed on the inner wall of the driving sleeve (6014); An adsorption assembly is installed on the supporting base tube (601), and the supporting base tube (601) is also connected to the pushing plate (2) via a lifting assembly; The driving sleeve (6014) is connected to a driving member installed at the bottom of the conveying platform (101); The spraying mechanism comprises a support frame (3) fixed on the conveying platform (101), two synchronously driven No. 1 electric push rods (302) are fixed on the support frame (3), an outer wall spraying part (304) is fixed on the movable rods of the two No. 1 electric push rods (302), and a No. 1 spray head (306) is arranged on one side of the outer wall spraying part (304); An inner wall spraying part (305) in communication with the outer wall spraying part (304) is also fixed thereon, and a second spraying head (307) is arranged at the end of the inner wall spraying part (305).

2. The automatic spraying device for zinc oxide resistor sheets for lightning arresters according to claim 1, characterized in that: The adsorption assembly includes a plurality of suction cups (609) fixed on the supporting base tube (601) at equal intervals around the circumference, and also includes a negative pressure extraction unit (608) fixed on the bottom of the conveying platform (101). The plurality of suction cups (609) are connected and communicated with the negative pressure extraction unit (608) through a negative pressure air pipe.

3. The automatic spraying device for zinc oxide resistor sheets for lightning arresters according to claim 2, characterized in that: The lifting assembly comprises a transmission frame (607) rotatably mounted on the bearing base pipe (601), and pulling steel cables (707) are fixed on both sides of the top of the transmission frame (607); Winding rollers (706) are rotatably mounted on both sides of the conveying platform (101), and the pulling steel cable (707) is wound onto the winding rollers (706) through a plurality of guide wheels (708) rotatably mounted on the conveying platform (101). The two winding rollers (706) are connected to the pushing plate (2) through a symmetrically arranged transmission assembly.

4. The automatic spraying device for zinc oxide resistor sheets for lightning arresters according to claim 3, characterized in that: The transmission assembly comprises a worm wheel (705) coaxially fixed to the winding roller (706); a worm (704) cooperating therewith is rotatably mounted on one side of the worm wheel (705); and a ratchet wheel (702) is coaxially fixed to the worm (704); A gear set (7010) is also rotatably mounted on the conveying platform (101), the gear set (7010) comprising a first gear and a second gear meshing with each other, a second ratchet (709) being coaxially fixed to the first gear, and the second gear being connected to the worm (704) via a transmission chain (703); A push-pull plate (701) fixed to the push plate (2) is slidably mounted on the conveying platform (101), and a ratchet pawl unidirectionally matched with the second ratchet (709) or the first ratchet (702) is mounted on the push-pull plate (701).

5. The automatic spraying device for zinc oxide resistor sheets for lightning arresters according to claim 1, characterized in that: An embedding groove is provided on the top of the supporting base tube (601), a baffle (6010) is slidably installed in the embedding groove, a spring (6011) is fixed to the bottom of the baffle (6010), one end of the spring (6011) is fixed to the bottom of the embedding groove, and the other end is fixed to the bottom of the baffle (6010).

6. The automatic spraying device for zinc oxide resistor sheets for lightning arresters according to claim 1, characterized in that: A gap portion (102) is provided on the conveying platform (101), and the gap portion (102) is coaxially arranged with the opening (104); The end of the conveying platform (101) is further provided with an inclined portion (103).

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