An angle-adjustable self-adaptive integrated spraying mechanism

Abstract

The present application relates to a kind of adjustable angle self-adapting integrated spraying mechanism, including spraying head device and lifting device, the spraying head device includes lower cover, upper cover and closing electric device, the lower cover and upper cover are hinged, the opening and closing of lower cover and upper cover is controlled by closing electric device, the lifting device includes base, elastic element, support frame and lifting electric device;The elastic element is connected lower cover and base, base is fixedly connected with support frame, the support frame is two parallelogram frames, and lifting electric device drives the lifting of support frame.The present application can adjust angle self-adapting integrated spraying mechanism, realizes the integrated structure design of hinge type lower cover flat push upper cover overturn opening and closing, shaft center automatic regulation, replaceable spraying head, with simple structure, lightweight, not sticky glue easy cleaning, easy closing and the like characteristics.

Description

Technical Field

[0001] This invention relates to an insulation spraying mechanism for overhead bare conductors, and more particularly to an integrated spraying mechanism with adjustable angle self-adaptation. Background Technology

[0002] Overhead bare conductors, as a crucial component of power distribution lines, are widely distributed in suburban areas, towns, and rural regions. Crossing forests, houses, ponds, and other areas, bare conductors are particularly vulnerable to weather conditions and are also a major source of power grid tripping and electric shock injuries, seriously impacting public safety and the reliability of the power grid. Therefore, insulating these high-risk exposed overhead conductors is essential, as it concerns both public welfare and the safety and reliable operation of the power grid.

[0003] Traditional insulation upgrades mainly involve replacing wires with insulated conductors or wrapping the wires with insulating rubber. Replacing wires with insulated conductors requires a power outage, affecting power supply reliability. It also requires significant manpower, resources, and time, and the complex implementation environment makes it difficult and carries high safety risks. Wrapping wires with insulating rubber requires large machinery, making it unsuitable for most locations. It also requires substantial manpower, resources, and time, and the heavy weight of the insulating rubber, while solving the insulation problem, introduces the issue of line load-bearing capacity.

[0004] In recent years, there have been a few attempts to modify overhead bare conductors by applying insulating coatings. Insulation coating robots have the advantages of uninterrupted operation, remote control, machine replacement of manual labor, and low construction costs, and are expected to gradually become a major force in the insulation modification of overhead bare conductors.

[0005] During the coating process, the insulating material is applied to the bare conductor using a spraying mechanism. In practical applications, current coating head mechanisms and coating heads suffer from the following problems:

[0006] 1. The spraying mechanism uses rigid connections or connections with low flexibility. Due to the sag of the bare wires, coupled with the machine's own weight and movement, the wires in contact with the coating head will have different bending deformations and angles. The coating head cannot dynamically adjust the nozzle's axis angle according to the wire's curvature, resulting in a certain angle between the coating head and the wire axis. This leads to uneven coating, affects the coating quality, and may even damage the coating head.

[0007] 2. The wire clamping method has certain defects. The bending of the conductor is mainly in the form of a sag, meaning the line is not on a horizontal plane from a horizontal perspective, but on a vertical plane. Currently available clamping mechanisms do not fully consider the characteristics of the conductor. The coating head mechanism mainly clamps the conductor horizontally. Because the conductor is not on a horizontal plane, problems often arise such as incomplete clamping, loose clamping, and the nozzle failing to close properly or not closing tightly. This leads to poor follow-up between the spraying mechanism and the line during subsequent coating processes, resulting in poor coating effects and even coating residue on the conductor, affecting the appearance.

[0008] Therefore, there is an urgent need for a more optimized spraying mechanism. Summary of the Invention

[0009] In view of this, the present invention addresses the above-mentioned problems existing in the prior art by providing an integrated spraying mechanism with adjustable angle self-adaptation.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] An adjustable-angle adaptive integrated spraying mechanism includes a spray head device and a lifting device. The spray head device includes a lower cover, an upper cover, and a closing electric device. The lower cover and the upper cover are hinged together, and the opening and closing of the lower cover and the upper cover are controlled by the closing electric device. The lifting device includes a base, an elastic element, a support frame, and a lifting electric device. The elastic element connects the lower cover and the base, and the base is fixedly connected to the support frame. The support frame is a parallelogram frame, and the lifting electric device drives the lifting and lowering of the support frame.

[0012] Preferably, there is one or more parallelogram frames, each parallelogram frame including a lifting arm and a first vertical arm. There are two lifting arms, which are opposite and parallel to each other, and the rear ends of the two lifting arms are connected to the upper and lower ends of the first vertical arm.

[0013] Preferably, the upper part of the first vertical arm of the parallelogram frame is adjustablely fixed to the front end of the base, and the lower part of the first vertical arm is adjustablely fixed to the rear end of the base via a diagonal bar. The side of the base forms a triangle with the first vertical arm and the diagonal bar.

[0014] Preferably, the base and the support frame are fixedly connected at an adjustable angle.

[0015] Preferably, the parallelogram frame further includes a second vertical arm, and the front ends of the two lifting arms are connected to the upper and lower ends of the second vertical arm.

[0016] Preferably, the lower cover is horizontally arranged, and the upper cover and the lower cover are hinged on the side to form a hinge structure. The lower cover is opened and closed by pushing the upper cover with a closing electric device.

[0017] Preferably, the flip angle of the top cover is 60 to 180°, more preferably 90°.

[0018] Preferably, the lower cover has a V-shaped groove at the front end and a lower spray head slot at the rear end, where the lower spray head is detachably installed; the upper cover has a V-shaped groove at the front end and an upper spray head slot at the rear end, where the upper spray head is detachably installed; the upper and lower spray heads together form a spray head, with an inlet at the front end and an outlet at the rear end.

[0019] Preferably, the spray head is a PTEE or POM spray head.

[0020] Preferably, a wire clamping structure is provided before the spray head, and the wire clamping structure is detachably installed in the spray head assembly.

[0021] Preferably, the spray head cavity has no partitions and the corners near the outlet are rounded.

[0022] Preferably, the elastic element is an elastic plastic, a sheet, a colloid, a shock absorber, or a spring-supported structure. The spring-supported structure includes a screw, a spring, and a nut. The screw passes through the base, and the spring is fitted over the screw. The upper end of the screw is fixed to the lower cover, and the lower end of the screw is threadedly connected to the nut.

[0023] Preferably, the spray head has a vertical travel distance of 1-5 cm and an angular variation space of 10-30 degrees in all directions from the center point.

[0024] More preferably, the spray head has a 2 cm travel distance in the vertical direction and a 15-degree angular variation space in all directions from the center point.

[0025] Preferably, the closing electric device includes a first motor, a first lead screw, and a first rotating shaft. The first motor is mounted on the lower cover, the first rotating shaft is rotatably mounted on the upper cover, the first lead screw passes through the first rotating shaft, and the first motor drives the first lead screw to rotate; or the closing electric device is an electric push rod or a servo motor.

[0026] Preferably, the lifting electric device includes a second motor, a second lead screw, and a second rotating shaft. The second motor is mounted on a mounting plate, and the second rotating shaft is rotatably mounted on two lifting arms of the support frame. The second lead screw passes through the second rotating shaft, and the second motor drives the second lead screw to rotate; or the lifting electric device is an electric push rod or a servo motor.

[0027] Preferably, the adjustable angle adaptive integrated spraying mechanism further includes a limiting structure, which includes an upper limiting structure installed at the spraying head and a lower limiting structure installed on the lifting arm.

[0028] This invention relates to an adjustable-angle adaptive integrated spraying mechanism, which achieves an integrated structural design featuring a hinged lower cover that pushes open and closes while the upper cover flips, automatic shaft adjustment, and replaceable spray heads. It boasts advantages such as simple structure, lightweight, non-adhesive and easy cleaning, and easy operation. The specific beneficial effects are as follows:

[0029] 1. The spray head can adapt to changes in conductor curvature. Based on the sag angle of different lines, the parallelogram angle of the support frame and the triangular angle between the support frame and the base are pre-adjusted to pre-determine the base angle. Due to the characteristics of the parallelogram and triangle, the base angle remains unchanged during lifting. The spray head device and lifting device are softly connected by elastic components, allowing the spray head a certain range of vertical movement and angular variation space in all directions from the center point. This enables the spray head to automatically adapt to the conductor curvature and height in real time, overcoming the drawbacks of rigid connection methods currently on the market.

[0030] 2. Precise conductor clamping. Because the centerline of the spray head and the centerline of the conductor are on the same vertical plane, the guiding assistance of the V-groove inside the closing mechanism allows the lifting device to ensure that the centerline of the spray head and the centerline of the conductor are aligned in a parallel manner, ensuring precise conductor clamping. This greatly simplifies the design of the self-aligning mechanism and makes closing easier.

[0031] 3. Integrated modular design, convenient maintenance, and high reliability. This invention adopts a hinged lower cover push-open upper cover flip-open structure, and simultaneously installs the closing drive, V-groove, spray head, etc., within the spray head device, realizing integrated and modular coating, guiding, and driving functions. It features convenient maintenance, high reliability, and a unified design. The spray head uses PTEE (polytetrafluoroethylene) and POM (polyoxymethylene resin) self-lubricating materials and can be easily replaced. In practice, the paint basically does not adhere after drying. At the same time, as a disposable replacement part, the spray head also greatly saves the maintenance and cleaning time of construction workers. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the integrated spraying mechanism of the present invention.

[0033] Figure 2 This is a schematic diagram of the spray head device (closed state) of the present invention.

[0034] Figure 3 This is a schematic diagram of the spray head device (open state) of the present invention.

[0035] Figure 4 This is a schematic diagram of the closing electric actuator and the lifting electric actuator.

[0036] Explanation of reference numerals in the attached figures:

[0037] Spray head device 1, lifting device 2, lower cover 3, V-groove 31, lower spray head 33, feed inlet 34, cable inlet 35, cable outlet 36, cable clamping structure 37, upper cover 4, V-groove accommodating space 41, upper spray head 43, closing electric device 5, first motor 51, first lead screw 52, ​​first rotating shaft 53, base 6, inclined rod 61, elastic element 7, screw 71, spring 72, nut 73, support frame 8, lifting arm 81, first vertical arm 82, mounting plate 83, lifting electric device 9, second motor 91, second lead screw 92, second rotating shaft 93. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the embodiments.

[0039] An adjustable-angle adaptive integrated spraying mechanism, such as Figure 1 As shown, the device includes a spray head assembly 1 and a lifting device 2. The spray head assembly 1 includes a lower cover 3, an upper cover 4, and a closing electric device 5. The lower cover 3 is horizontally arranged, and the upper cover 4 is hinged to the lower cover 3 on the side to form a hinge structure. The lower cover 3 is opened and closed by pushing the upper cover 4 with the closing electric device 5. The flipping angle of the upper cover is 60-180°, more preferably 90°. The lifting device 2 includes a base 6, an elastic element 7, a support frame 8, and a lifting electric device 9. The elastic element 7 connects the lower cover 3 and the base 6. The base 6 and the support frame 8 are adjustablely fixedly connected, and the lifting electric device 9 drives the lifting and lowering of the support frame 8.

[0040] The elastic element 7 is a spring-pillar structure, such as... Figure 2 As shown, the spring-loaded column structure includes a screw 71, a spring 72, and a nut 73. The screw 71 passes through the base 6, and the spring 72 is sleeved on the screw 71. The upper end of the screw 71 is fixed to the lower cover 3, and the lower end of the screw 71 is threadedly connected to the nut 73. The elastic element 7 provides a flexible connection between the base and the spray head device 1. The spray head has a vertical travel of 1-5 cm and an angular change space of 10-30 degrees in all directions from the center point, allowing the spray head to adapt to the curvature and height of the guide wire in real time, overcoming the drawbacks of the rigid connection methods currently on the market. More preferably, the spray head has a vertical travel of 2 cm and an angular change space of 15 degrees in all directions from the center point.

[0041] In some embodiments, the elastic element can be an elastic plastic, a sheet, a colloid, or a shock absorber, which can also achieve the purpose of making a soft connection between the spray head and the lifting device.

[0042] like Figure 1As shown, the support frame 8 consists of two parallelograms. Each parallelogram includes a lifting arm 81, a first vertical arm 82, and a mounting plate 83. There are two lifting arms 81, which are opposite and parallel to each other. The rear ends of the two lifting arms 81 are connected to the upper and lower ends of the first vertical arm 82, and the front ends of the two lifting arms 81 are fixed to the mounting plate 83. The first vertical arm 82, the two lifting arms 81, and the line connecting their front ends form a parallelogram. The arms of the support frame 8 and the mounting plate 83 are adjustablely fixedly connected. The upper part of the first vertical arm 82 is adjustablely fixedly connected to the front end of the base 6, and the lower part of the first vertical arm 82 is adjustablely fixedly connected to the rear end of the base 6 via a diagonal rod 61. The side of the base 6 forms a triangle with the first vertical arm 82 and the diagonal rod 61. The aforementioned adjustable fixed connection can be achieved using fasteners such as screws or nuts. Fixing holes can be made on the first vertical arm 82 and the diagonal rod 61 to facilitate adjustment of the installation position and the shape and angle of the triangle, that is, to adjust the angle between the base 6 and the support frame 8. Before construction, the parallelogram and triangle are pre-adjusted to a suitable angle according to the curvature of the conductor, so that the spray head device matches the conductor as closely as possible.

[0043] In some embodiments, the support frame may consist of only one parallelogram frame, which includes a second vertical arm. The front ends of the two lifting arms are connected to the upper and lower ends of the second vertical arm, and the second vertical arm is then mounted on a mounting plate.

[0044] like Figure 3 As shown, the lower cover 3 has a V-shaped groove 31 at the front end and a lower spray head slot at the rear end. The lower spray head 33 is detachably installed in the lower spray head slot and is connected to the feed port 34 of the lower cover 3. The upper cover 4 has a V-shaped groove receiving space 41 at the front end and an upper spray head slot at the rear end. The upper spray head 43 is detachably installed in the upper spray head slot and the upper spray head 43 and the lower spray head 33 are combined to form a spray head.

[0045] A wire-clamping structure 37 is provided before the V-groove 31 and the spray head. The wire-clamping structure 37 is detachably installed in the spray head assembly. Because the axis of the spray head and the axis of the lead wire are on the same vertical plane, the V-groove, which is wider at the top and narrower at the bottom, can help guide the lead wire, ensuring that the axis of the spray head and the axis of the lead wire coincide in a parallel manner, thus ensuring precise clamping of the lead wire. The wire-clamping structure 37 then secures the lead wire. There can be more than one wire-clamping structure. The wire-clamping structure can be a structure with semi-circular slots provided on the upper cover 4 and the lower cover 3, which together form a circular slot to clamp the lead wire.

[0046] The spray head cavity has no partitions, and the corners near the wire outlet are rounded. Currently available spray heads have built-in wire clamps, which result in poor pre-wrapping of the wire by the coating material within the cavity, and the clamps significantly reduce coating flowability. In this invention, the spray head cavity has no partitions, perfectly achieving full pre-wrapping of the wire within the cavity. This increases the time for the coating to adhere to the wire and maximizes coating flowability, greatly reducing the power consumption of the feeding system and the pressure on the pipeline. The spray head's adhesive outlet surface features an inner chamfer design, which increases the wrapping force during coating and ensures a smoother and more aesthetically pleasing coating surface.

[0047] In some embodiments, a nozzle design may be used to spray coatings with lower viscosity. Spray holes are provided on both the upper and lower spray heads, instead of having a feed inlet only on the lower spray head.

[0048] The spray head has an inlet 35 at the front and an outlet 36 at the rear. The diameter of the outlet 36 is determined by the coating thickness, meaning it is larger than the inlet 35. When the diameter of the inlet 35 is the same as the wire diameter, it also helps to secure the wire. The spray head can be directly replaced to coat wires of different thicknesses and diameters. The insulating adhesive enters the spray head through the inlet and fills it completely. The bare wire enters the spray head through the inlet 35, is coated with the adhesive, and exits through the outlet 36. The coating thickness on the wire is the preset value.

[0049] like Figure 4 As shown, the closing electric device 5 includes a first motor 51, a first lead screw 52, ​​and a first rotating shaft 53. The first motor is mounted on the lower cover, the first rotating shaft is rotatably mounted on the upper cover, and the first lead screw passes through the first rotating shaft. The first motor drives the first lead screw to rotate. Existing spray head mechanisms have an externally located spray head closing mechanism, which results in a complex mechanism, troublesome maintenance, large size and weight. Furthermore, some of the drive mechanism is located directly below the spray head, making the spray head mechanism prone to clogging and malfunction due to paint dripping. In this embodiment, the closing electric device is directly installed inside the spray head mechanism, completely avoiding the shortcomings of the prior art.

[0050] Preferably, such as Figure 4 As shown, the lifting electric device 9 includes a second motor 91, a second lead screw 92, and a second rotating shaft 93. The second motor is mounted on a mounting plate, and the second rotating shaft is rotatably mounted on the two lifting arms of the support frame. The second lead screw passes through the second rotating shaft, and the second motor drives the second lead screw to rotate.

[0051] Preferably, the adjustable angle adaptive integrated spraying mechanism further includes a limiting structure, such as a sensor, for detecting whether the integrated spraying mechanism has reached the upper and lower limits. The limiting mechanism includes an upper limit structure installed at the spraying head and a lower limit structure installed on the lifting arm.

[0052] Preferably, the spray head is a PTEE or POM spray head. Existing coating mechanisms mostly use metal or ordinary plastic. Due to the high viscosity of the insulating material and its short surface drying time, multiple material changes and nozzle opening and closing are required during application. Metal or ordinary plastic is easily contaminated by the coating, and the complex mechanism and limited opening make cleaning very difficult, easily clogging the mechanism or causing the spray head to not close properly, directly leading to mechanism failure and coating quality. In this invention, the spray head uses PTEE (polytetrafluoroethylene) and POM (polyoxymethylene resin) self-lubricating materials and can be easily replaced. Practice has shown that the coating basically does not adhere after drying, greatly saving maintenance and cleaning time for construction workers.

[0053] The embodiments described above represent only a few of the many implementations of the present invention. Although the descriptions are quite specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. An adjustable-angle adaptive integrated spraying mechanism, characterized in that: The device includes a spray head assembly and a lifting device. The spray head assembly includes a lower cover, an upper cover, and a closing electric device. The lower cover and the upper cover are hinged together, and the opening and closing of the lower cover and the upper cover are controlled by the closing electric device. The lifting device includes a base, an elastic element, a support frame, and a lifting electric device. The elastic element connects the lower cover and the base. The base is fixedly connected to the support frame. The support frame is a parallelogram frame. The lifting electric device drives the lifting and lowering of the support frame. The closing electric device includes a first motor, a first lead screw, and a first rotating shaft. The first motor is mounted on the lower cover, the first rotating shaft is rotatably mounted on the upper cover, the first lead screw passes through the first rotating shaft, and the first motor drives the first lead screw to rotate; or the closing electric device is an electric push rod or a servo motor. The lifting electric device includes a second motor, a second lead screw, and a second rotating shaft. The second motor is mounted on a mounting plate, the second rotating shaft is rotatably mounted on two lifting arms of the support frame, the second lead screw passes through the second rotating shaft, and the second motor drives the second lead screw to rotate; or the lifting electric device is an electric push rod or a servo motor.

2. The integrated spraying mechanism according to claim 1, characterized in that: There is one or more parallelogram frames, each parallelogram frame includes a lifting arm and a first vertical arm. There are two lifting arms, which are opposite and parallel to each other. The rear ends of the two lifting arms are connected to the upper and lower ends of the first vertical arm. The base and the support frame are fixedly connected at an adjustable angle. Alternatively, the parallelogram frame may also include a second vertical arm, and the front ends of the two lifting arms are connected to the upper and lower ends of the second vertical arm.

3. The integrated spraying mechanism according to claim 2, characterized in that: The upper part of the first vertical arm of the parallelogram frame is adjustablely fixed to the front end of the base, and the lower part of the first vertical arm is adjustablely fixed to the rear end of the base via a diagonal bar. The side of the base forms a triangle with the first vertical arm and the diagonal bar.

4. The integrated spraying mechanism according to claim 1, characterized in that: The lower cover is horizontally positioned, and the upper cover and the lower cover are hinged together on the side to form a hinge structure. The lower cover is opened and closed by pushing the upper cover with a closing electric device. The flipping angle of the upper cover is 60~180°.

5. The integrated spraying mechanism according to claim 1, characterized in that: The lower cover has a V-shaped groove at the front end and a lower spray head slot at the rear end, where the lower spray head can be detachably installed. The upper cover has a V-shaped groove at the front end to accommodate space and an upper spray head slot at the rear end, where the upper spray head can be detachably installed. The upper and lower spray heads together form a spray head, with an inlet at the front end and an outlet at the rear end.

6. The integrated spraying mechanism according to claim 5, characterized in that: The spray head is a PTEE or POM spray head, and a wire clamping structure is set in front of the spray head. The wire clamping structure is detachably installed in the spray head device. There is no partition in the spray head cavity, and the corners near the outlet are rounded.

7. The integrated spraying mechanism according to claim 1, characterized in that: The elastic element is made of elastic plastic, sheet metal, colloid, shock absorber, or spring pillar structure. The spring pillar structure includes a screw, a spring, and a nut. The screw passes through the base, and the spring is sleeved on the screw. The upper end of the screw is fixed to the lower cover, and the lower end of the screw is threadedly connected to the nut.

8. The integrated spraying mechanism according to claim 1 or 7, characterized in that: The spray head has a vertical travel range of 1-5 cm and an angular range of 10-30 degrees from the center point in all directions.

9. The integrated spraying mechanism according to claim 1, characterized in that: The integrated spraying mechanism also includes a limiting structure, which includes an upper limiting structure installed at the spraying head and a lower limiting structure installed on the lifting arm.

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