Municipal pipeline construction inner wall spraying maintenance equipment

Abstract

The invention discloses municipal pipeline construction inner wall spraying maintenance equipment, and relates to the technical field of pipeline inner wall maintenance, the municipal pipeline construction inner wall spraying maintenance equipment comprises a main body, one end of the main body is provided with a driving mechanism, the outer side of the driving mechanism is provided with a spraying mechanism, and the middle of the main body is provided with a supporting mechanism in contact with the pipeline inner wall; a regulation and control mechanism is arranged on the lower side of the middle of the body, and winding mechanisms for driving the supporting mechanism are arranged on the front side and the rear side of the middle of the body correspondingly. By arranging the supporting mechanism, the equipment is well supported on the inner wall of the pipeline, so that the purpose of adapting to pipelines with different diameters is achieved, by arranging the driving mechanism, the equipment is driven to move on the inner wall of the pipeline, and by arranging the flow limiting valve, the spraying flow of the spray head is controlled according to the size of the inner wall of the pipeline; the spray head can keep a proper distance away from the inner wall in pipelines with different inner diameters, meanwhile, the spray head can be adjusted to a proper spraying amount, and the rotating speed of the rotating cylinder can be controlled according to the size of the inner wall of the pipeline by arranging the oil cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline inner wall maintenance, and in particular to a municipal pipeline construction inner wall spray maintenance equipment. Background Art

[0002] As an important part of urban infrastructure, municipal pipelines can timely drain rainwater from the city, provide industrial and domestic water for the city, and prevent urban water resources from being polluted. The existing pipeline inner wall anti-corrosion material spraying device will first fix the pipeline, then the spray gun head will enter the pipeline, move the spray gun head, and then spray the inner wall of the pipeline.

[0003] Chinese invention patent CN117943232B discloses a spraying device for multi-diameter pipes with splash and ejection prevention. Although the purpose of splash and ejection prevention and adjustment according to the diameter of the inner wall of the pipe can be achieved, the staff needs to manually pull the device to move during spraying, so as to control the moving speed of the device. This may cause uneven moving speed and uneven spraying of the same pipe. Moreover, during spraying, the device cannot adaptively adjust the position of the nozzle and the spraying amount according to different pipe diameters. When the pipe diameter is large, the spraying thickness is thinner, and when the pipe diameter is small, the spraying thickness is thicker, which may easily cause large differences in spraying thickness for pipes of different diameters. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a municipal pipeline construction inner wall spraying maintenance equipment, which has the advantages of being able to spray more evenly inside the pipeline and being able to adapt to pipelines of different diameters, thereby solving the problems raised in the background technology.

[0005] In order to achieve the above-mentioned purpose of being able to spray more evenly inside the pipeline and being able to adapt to pipelines of different diameters, the present invention provides the following technical solutions: a municipal pipeline construction inner wall spraying maintenance equipment, comprising a main body, a driving mechanism is arranged at one end of the main body, a spraying mechanism is arranged on the outside of the driving mechanism, a supporting mechanism in contact with the inner wall of the pipeline is arranged in the middle of the main body, a regulating mechanism is arranged on the lower side of the middle of the main body, and a winding mechanism for driving the supporting mechanism is arranged on both the front and rear sides of the middle of the main body; The main body includes a material delivery pipe, a joint and a wire are arranged at the end of the material delivery pipe, a driving mechanism includes a motor housing and a reduction box, a driving motor electrically connected to the wire is arranged inside the motor housing, a spraying mechanism includes a rotating cylinder, a connecting cylinder movably connected to the reduction box through a bearing is arranged in the middle of the rotating cylinder, and the regulating mechanism includes a gear box, an oil cylinder and a flow limiting valve; The supporting mechanism includes a moving ring slidably arranged outside the feeding pipe and a fixed ring fixedly connected to the motor housing, a rotating outer rod is movably connected to the fixed ring through a bearing, a rotating inner rod is movably connected to the moving ring through a bearing, a handle is arranged on the side wall of the moving ring, the middle parts of the rotating inner rod and the rotating outer rod are movably connected through a pin shaft, the end of the rotating inner rod is movably connected to an anti-slip wheel through a rotating shaft, and the end of the rotating outer rod is movably connected to a driving wheel through a rotating shaft.

[0006] Preferably, a worm is provided in the middle of the driving motor shaft, a worm wheel meshing with the worm is provided on the fixed ring, the worm wheel is connected to a driving pulley through a rotating shaft transmission, the driving wheel is connected to a driven pulley through a rotating shaft transmission, and the driven pulley and the driving pulley are connected by a transmission belt power.

[0007] Preferably, an intermediate shaft is provided inside the winding mechanism, the outside of the intermediate shaft is connected to a winding wheel via a coil spring, the outside of the winding wheel is fixedly connected to a tension belt, and the end of the tension belt extends from the top of the winding drum and is connected to one side of the movable ring.

[0008] Preferably, the bottom of the movable ring is fixedly connected to a limiting rack, the bottom of the gear box is provided with a rack housing extending to the reduction box, the movable end of the limiting rack is inserted into the rack housing, the interior of the gear box is provided with an internal spline gear, the middle part of the internal spline gear is connected to a movable shaft through a spline sliding connection, and the middle part of the movable shaft is threadedly connected to the side wall of the gear box.

[0009] Preferably, the inside of the oil cylinder is connected to a sealing gasket through a rebound piece, a bearing plate is provided on the outside of the sealing gasket, the middle part of the bearing plate is connected to one end of the movable shaft through a bearing, and the other end of the movable shaft abuts against the installed flow limiting valve to adjust the flow of the flow limiting valve.

[0010] Preferably, the connector is connected to the inlet of the flow limiting valve through a feed hose, a bend pipe connected to the outlet of the flow limiting valve through the feed hose is provided inside the reduction box, and the end of the bend pipe is connected to the inside of the connecting cylinder through a sealed bearing.

[0011] Preferably, a telescopic cylinder is movably inserted into the top of the rotating cylinder, a nozzle is provided on the top of the telescopic cylinder, a sealing ring is provided on one end of the telescopic cylinder inserted into the rotating cylinder, an external elastic part is fixedly connected to the inner bottom wall of the rotating cylinder, and the top of the external elastic part is fixedly connected to the sealing ring.

[0012] Preferably, the reducer is provided with an output shaft and an input shaft inside, the input shaft is dynamically connected to the end of the driving motor shaft, a gear shaft is provided at the end of the output shaft, a small gear is keyed to the gear shaft, a large gear is provided outside the connecting tube, and the large gear meshes with the small gear.

[0013] Preferably, an input fixed bevel wheel is fixedly arranged on the input shaft, an input movable bevel wheel is fixedly arranged on the input shaft, an output movable bevel wheel is fixedly arranged on the output shaft, an output fixed bevel wheel is fixedly arranged on the output shaft, a steel belt transmission is passed between the output fixed bevel wheel and the input fixed bevel wheel, a hydraulic cylinder is arranged in the middle of the inner wall of the reduction box, the hydraulic cylinder is connected with the oil barrel through an oil pipe, a hydraulic rod is arranged at the end of the hydraulic cylinder, and the middle and end of the hydraulic rod are connected with the output movable bevel wheel and the input movable bevel wheel through a bearing ring.

[0014] Preferably, a sealing cylinder is provided upwardly on the inner bottom wall of the rotating cylinder, a sealing plate is slidably provided inside the sealing cylinder, a telescopic column is provided at the bottom of the sealing plate and penetrates downwardly through the rotating cylinder, a counterweight ball is provided at the bottom of the telescopic column, an inner elastic part is fixedly connected to the inner bottom wall of the sealing cylinder, and the top of the inner elastic part is fixedly connected to the sealing plate.

[0015] Compared with the prior art, the present invention provides a municipal pipeline construction inner wall spraying maintenance equipment, which has the following beneficial effects: The municipal pipeline construction inner wall spray maintenance equipment can well support the equipment on the inner wall of the pipeline by arranging a supporting mechanism, and because the rotating outer rod and the rotating inner rod are connected to form a scissors shape by a hinge, the ends of the rotating outer rod and the rotating inner rod can be extended to different positions by adjusting the angle between the rotating outer rod and the rotating inner rod, thereby achieving the purpose of adapting to pipelines of different diameters.

[0016] The municipal pipeline construction inner wall spray maintenance equipment can drive the equipment to move on the inner wall of the pipeline by setting a driving mechanism. Under the drive of the driving motor, the output shaft is used to drive the worm to rotate, and three worm gears can be driven to rotate at the same time, so that the equipment can move smoothly inside the pipeline, avoiding the problem of uneven spraying due to unstable movement of the equipment.

[0017] The municipal pipeline construction inner wall spray maintenance equipment can control the nozzle spray flow rate according to the size of the inner wall of the pipeline by setting a flow limiting valve, thereby controlling the nozzle flow rate. At the same time, the change in flow rate will also change the length of the external elastic part, thereby adjusting the extended length of the telescopic tube, so that the nozzle can be at a suitable distance from the inner wall in pipelines with different inner diameters, and the nozzle can also be adjusted to a suitable spraying amount.

[0018] The municipal pipeline construction inner wall spray maintenance equipment can control the rotation speed of the rotating cylinder according to the size of the inner wall of the pipeline by setting an oil cylinder, so that the equipment can adapt to pipelines of different diameters. By controlling the discharge amount of hydraulic oil inside the oil cylinder and adjusting the extended length of the hydraulic rod, the rotation speed ratio is adjusted, so that the rotating cylinder rotates faster in a small-diameter pipeline and faster in a large-diameter pipeline, thereby achieving the purpose of adjusting to the appropriate rotation speed according to different pipeline diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention; Figure 2 It is a rear-view stereoscopic structural schematic diagram of the present invention; Figure 3 It is a top view of the three-dimensional structure of the present invention; Figure 4 It is a schematic diagram of the front cross-sectional structure of the winding mechanism of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the gearbox of the present invention; Figure 6 It is a schematic diagram of the left side cross-sectional structure of the gearbox of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the structure at A in the middle; Figure 8 It is a schematic diagram of the front cross-sectional structure of the driving mechanism of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the structure at point B in the middle.

[0020] In the figure: 1. main body; 101. feeding pipe; 102. joint; 103. wire; 2. supporting mechanism; 201. fixed ring; 202. moving ring; 203. rotating outer rod; 204. rotating inner rod; 205. anti-skid wheel; 206. driving wheel; 207. driven pulley; 208. driving belt; 209. driving pulley; 210. worm gear; 211. handle; 3. driving mechanism; 301. motor housing; 302. reduction box; 303. driving motor; 304. worm; 305. input shaft; 306. output shaft; 307. gear shaft; 308. small gear; 309. large gear; 310. output fixed cone wheel; 311. output movable cone wheel; 312. input movable cone wheel; 313. input fixed cone wheel; 314. steel belt; 315. hydraulic cylinder; 316. Hydraulic rod; 317, bearing ring; 4, spraying mechanism; 401, rotating cylinder; 402, telescopic cylinder; 404, nozzle; 405, telescopic column; 406, counterweight ball; 407, elbow; 408, connecting cylinder; 409, sealing cylinder; 410, sealing plate; 411, inner elastic member; 412, outer elastic member; 413, sealing ring; 5, winding mechanism; 501, winding cylinder; 502, tension belt; 503, winding wheel; 504, coil spring; 505, intermediate shaft; 6, regulating mechanism; 601, limit rack; 602, gear box; 603, oil cylinder; 604, oil pipe; 605, flow limiting valve; 606, feed hose; 607, rack housing; 608, moving shaft; 609, inner spline gear; 610, rebound member; 611, bearing plate; 612, sealing gasket. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] For an embodiment of the present invention, please refer to Figures 1 to 9 , comprising a main body 1, a driving mechanism 3 is arranged at one end of the main body 1, a spraying mechanism 4 is arranged outside the driving mechanism 3, a supporting mechanism 2 in contact with the inner wall of the pipeline is arranged in the middle of the main body 1, a regulating mechanism 6 is arranged at the lower side of the middle of the main body 1, and a winding mechanism 5 for driving the supporting mechanism 2 is arranged on both the front and rear sides of the middle of the main body 1; like Figure 2 , Figure 3 and Figure 8 As shown, the main body 1 includes a feed pipe 101, the end of which is provided with a joint 102 and a wire 103, the driving mechanism 3 includes a motor housing 301 and a reduction box 302, the motor housing 301 is provided with a driving motor 303 electrically connected to the wire 103, the spraying mechanism 4 includes a rotating cylinder 401, the middle of the rotating cylinder 401 is provided with a connecting cylinder 408 movably connected to the reduction box 302 through a bearing, and the regulating mechanism 6 includes a gear box 602, an oil cylinder 603 and a flow limiting valve 605; like Figure 2 , Figure 3 and Figure 8 As shown, the support mechanism 2 includes a moving ring 202 slidably arranged outside the feed pipe 101 and a fixed ring 201 fixedly connected to the motor housing 301, a rotating outer rod 203 is movably connected to the fixed ring 201 through a bearing, a rotating inner rod 204 is movably connected to the moving ring 202 through a bearing, a handle 211 is provided on the side wall of the moving ring 202, the middle parts of the rotating inner rod 204 and the rotating outer rod 203 are movably connected through a pin shaft, the end of the rotating inner rod 204 is movably connected to an anti-slip wheel 205 through a rotating shaft, and the end of the rotating outer rod 203 is movably connected to a driving wheel 206 through a rotating shaft.

[0023] When in use, the connector 102 is connected to an external paint delivery pipeline, and the paint pumped out by the external high-pressure pump is delivered to the inside of the connector 102 by the pipeline to provide paint to the device. At the same time, the drive motor 303 is powered by the wire 103, and the start and stop and rotation direction of the drive motor 303 are controlled by an external switch. When the device is placed in the pipeline, the moving ring 202 is pulled by the handle 211. After the moving ring 202 moves to the position of the connector 102, the anti-skid wheel 205 and the drive wheel 206 can be close to the delivery pipe 101, which is convenient for shrinking. The opening diameter of the equipment, after the equipment is placed inside the pipeline, the moving ring 202 is pulled by the winding mechanism 5 to open the supporting mechanism 2, and the anti-slip wheel 205 and the driving wheel 206 are used to support the inner wall of the pipeline. The driving motor 303 inside the driving mechanism 3 is controlled to rotate by an external switch to move the equipment to one end of the pipeline. After adjusting the position, the external high-pressure pump sends the paint to the spraying mechanism 4, and the driving motor 303 is reversed to drive the equipment back to the inlet end of the pipeline. During the return process, the spraying mechanism 4 is used to spray and maintain the inner wall of the pipeline.

[0024] like Figure 2 , Figure 3 and Figure 8 As shown, a worm 304 is arranged at the middle of the rotating shaft of the driving motor 303, a worm wheel 210 meshing with the worm 304 is arranged on the fixing ring 201, the worm wheel 210 is connected to a driving pulley 209 through a rotating shaft transmission, the driving wheel 206 is connected to a driven pulley 207 through a rotating shaft transmission, and the driven pulley 207 and the driving pulley 209 are connected to each other through a transmission belt 208. During specific use, the power for the device to move inside the pipeline is provided by the driving motor 303. When the rotating shaft of the driving motor 303 drives the worm 304 to rotate, it simultaneously drives the three worm wheels 210 to rotate. The power is transmitted to the driven pulley 207 through the active pulley 209 coaxially connected to the worm wheel 210. The driven pulley 207 drives the coaxial driving wheel 206 to rotate, so that the device can move smoothly inside the pipeline. Compared with traditional manual pulling, the speed of the device movement can be more stable, so that the front and back spraying inside the pipeline is more uniform, avoiding the problem of uneven paint spraying thickness inside the pipeline caused by uncontrollable manual pulling speed.

[0025] like Figure 2-Figure 4 As shown, an intermediate shaft 505 is arranged inside the winding mechanism 5, and the outside of the intermediate shaft 505 is connected to the winding wheel 503 through a coil spring 504. The outside of the winding wheel 503 is fixedly connected to a tension belt 502, and the end of the tension belt 502 extends from the top of the winding drum 501 and is connected to one side of the movable ring 202.

[0026] During specific use, after pulling the handle 211 to make the movable ring 202 close to the joint 102, the tensioning belt 502 is pulled out from the inside of the winding drum 501. At this time, the coil spring 504 is tightened to subject the tensioning belt 502 to continuous tension. After the equipment is placed inside the pipeline, the tensioning belt 502 can be retracted by loosening the handle 211 and the tensioning belt 502 can also be used to press the anti-slip wheel 205 and the driving wheel 206 against the inner wall of the pipeline, so that the driving wheel 206 has sufficient friction with the inner wall of the pipeline, thereby achieving the purpose of using the driving wheel 206 to drive the equipment to move inside the pipeline.

[0027] like Figure 2-Figure 3 as well as Figure 5-Figure 6 As shown, a limiting rack 601 is fixedly connected to the bottom of the movable ring 202, a rack housing 607 extending to the reduction box 302 is provided at the bottom of the gear box 602, the movable end of the limiting rack 601 is inserted into the rack housing 607, an internal spline gear 609 is provided inside the gear box 602, and a movable shaft 608 is slidably connected to the middle part of the internal spline gear 609 through a spline, and the middle part of the movable shaft 608 is threadedly connected to the side wall of the gear box 602.

[0028] like Figure 6 and Figure 7 As shown, the interior of the oil cylinder 603 is connected to a sealing gasket 612 through a rebound member 610, and a bearing plate 611 is provided on the outer side of the sealing gasket 612. The middle part of the bearing plate 611 is connected to one end of the movable shaft 608 through a bearing, and the other end of the movable shaft 608 is abutted against the installed flow limiting valve 605 for adjusting the flow of the flow limiting valve 605.

[0029] like Figure 3 and Figure 8 As shown, the connector 102 is connected to the inlet of the limiting valve 605 through the material delivery hose 606, and a bend pipe 407 is provided inside the reduction box 302 to connect to the outlet of the limiting valve 605 through the material delivery hose 606. The end of the bend pipe 407 is connected to the inside of the connecting tube 408 through a sealed bearing.

[0030] During specific use, when the device is installed inside the pipeline, the movable ring 202 will approach the position of the fixed ring 201 until the anti-skid wheel 205 and the driving wheel 206 are pressed against the inner wall of the pipeline. During this process, the limit rack 601 will gradually insert into the limit rack 601, and the top of the limit rack 601 will mesh with the internal spline gear 609 to drive the internal spline gear 609 to rotate. Through the spline sliding cooperation between the internal spline gear 609 and the movable shaft 608, and the thread cooperation between the movable shaft 608 and the gear box 602, the internal spline gear 609 can drive the movable shaft 608 to rotate while translating inside the gear box 602, and adjust the flow value of the flow limiting valve 605, so that when the device is installed inside pipelines of different diameters, the flow limiting valve 605 can provide a corresponding flow according to the size of the pipeline diameter, thereby adjusting the spraying mechanism 4 to have a corresponding spraying amount inside pipelines of different diameters; According to the cylinder side area formula S=Ch=2πrh, when the inner diameter of the pipe changes, since the moving speed of the equipment remains unchanged and the equipment moves the same distance, the spraying area is only related to the pipe radius r; When the limit rack 601 moves, the driving wheel 206 moves in an arc. According to the standard equation of a circle x²+y²=R², after the equipment is manufactured, R has been determined to be unchanged, and the radius r of the inner wall of the pipe is also related to the distance moved by the limit rack 601. Therefore, the flow change of the flow limiting valve 605 can be controlled by the distance moved by the limit rack 601, so that the flow rate increases with the increase of the inner diameter of the pipe. This can achieve the purpose of making the amount of paint sprayed as similar as possible when the equipment moves over the same area, avoiding the problem of large differences in spray thickness when the equipment sprays pipes of different diameters.

[0031] like Figure 2 , Figure 3 and Figure 8 As shown, a telescopic cylinder 402 is movably inserted into the top of the rotating cylinder 401, a nozzle 404 is arranged on the top of the telescopic cylinder 402, a sealing ring 413 is arranged on one end of the telescopic cylinder 402 inserted into the rotating cylinder 401, an external elastic member 412 is fixedly connected to the inner bottom wall of the rotating cylinder 401, and the top of the external elastic member 412 is fixedly connected to the sealing ring 413.

[0032] During specific use, when the flow rate flowing through the rotating cylinder 401 changes, the pressure inside the rotating cylinder 401 will also change. When operating inside a pipe with a larger diameter, the internal pressure of the rotating cylinder 401 will cause the outer elastic member 412 to be stretched, and the telescopic cylinder 402 to extend, so that the nozzle 404 can make a larger circular motion, so that the nozzle 404 can adapt to the distance from the inner wall of the pipe to the feed pipe 101 in the larger pipe. When operating inside a smaller pipe, the opposite is true, thereby achieving the purpose of being able to adjust the position of the nozzle 404 according to the size of the pipe.

[0033] like Figure 8 As shown, the interior of the reduction box 302 is provided with an output shaft 306 and an input shaft 305, the input shaft 305 is dynamically connected to the end of the rotating shaft of the driving motor 303, a gear shaft 307 is provided at the end of the output shaft 306, a small gear 308 is key-connected to the gear shaft 307, a large gear 309 is provided on the outside of the connecting tube 408, and the large gear 309 is meshed with the small gear 308.

[0034] like Figure 2 and Fig. 9 As shown, an input fixed bevel wheel 313 is fixedly provided on the input shaft 305, an input movable bevel wheel 312 is fixedly provided on the input shaft 305, an output movable bevel wheel 311 is fixedly provided on the output shaft 306, an output fixed bevel wheel 310 is fixedly provided on the output shaft 306, a steel belt 314 is used for transmission between the output fixed bevel wheel 310 and the input fixed bevel wheel 313, a hydraulic cylinder 315 is provided in the middle of the inner side wall of the reduction box 302, the hydraulic cylinder 315 is connected with the oil barrel 603 through the oil pipe 604, a hydraulic rod 316 is provided at the end of the hydraulic cylinder 315, and the middle and end of the hydraulic rod 316 are connected with the output movable bevel wheel 311 and the input movable bevel wheel 312 through the bearing ring 317.

[0035] When in use, the power of the driving motor 303 is transmitted to the input shaft 305 through the rotating shaft. The input shaft 305 and the output shaft 306 are connected by the steel belt 314, thereby transmitting the power to the small gear 308. When the small gear 308 drives the large gear 309 to rotate, the rotating cylinder 401 rotates, and the paint is sprayed on the inner wall of the pipe in a circular shape. When spraying pipes of different diameters, such as Figure 5-Figure 7 As shown, since the hydraulic oil discharge amount in the oil cylinder 603 changes with the position of the limit rack 601, Fig. 9 The extension of the hydraulic rod 316 in the pipeline will also change, thereby adjusting the speed ratio between the input shaft 305 and the output shaft 306. When the inner diameter of the pipeline is large, the hydraulic rod 316 extends, as shown in FIG. Fig. 9 In the state shown in , the input shaft 305 drives the output shaft 306 to rotate faster. At this time, the rotating cylinder 401 rotates faster, and with the large flow of paint sprayed by the nozzle 404, it can be more suitable for the operation inside the large pipeline. On the contrary, the flow of the nozzle 404 is small inside the smaller pipeline, and the rotating cylinder 401 rotates slower, thereby adapting to the spraying of small diameter pipelines.

[0036] like Figure 2 , Figure 3 and Figure 8As shown, a sealing cylinder 409 is upwardly provided on the inner bottom wall of the rotating cylinder 401, a sealing plate 410 is slidably provided inside the sealing cylinder 409, a telescopic column 405 is provided at the bottom of the sealing plate 410 and penetrates downwardly through the rotating cylinder 401, a counterweight ball 406 is provided at the bottom of the telescopic column 405, an inner elastic part 411 is fixedly connected to the inner bottom wall of the sealing cylinder 409, and the top of the inner elastic part 411 is fixedly connected to the sealing plate 410.

[0037] During specific use, the extension and retraction amount of the telescopic column 405 can be adjusted by the pressure inside the rotating cylinder 401 and the rotation speed of the rotating cylinder 401. When the rotating cylinder 401 rotates, the change in the center of gravity caused by the extension of the telescopic cylinder 402 can be effectively offset, preventing the rotating cylinder 401 from excessively shifting the center of gravity when rotating, thereby protecting the equipment.

[0038] The specific steps and principles of using this device are as follows: First, the connector 102 is connected to an external paint delivery pipeline, and the paint pumped out by the external high-pressure pump can be delivered to the inside of the connector 102 through the pipeline to provide paint to the device. At the same time, the drive motor 303 is powered by the wire 103, and the start and stop and rotation direction of the drive motor 303 are controlled by an external switch; When the device is placed inside the pipeline, the movable ring 202 is pulled by the handle 211. After the movable ring 202 moves to the position of the joint 102, the anti-skid wheel 205 and the driving wheel 206 can be close to the material conveying pipe 101, which is convenient for reducing the opening diameter of the device. At the same time, after the handle 211 is pulled to make the movable ring 202 close to the joint 102, the tensioning belt 502 is pulled out from the inside of the winding drum 501. At this time, the coil spring 504 is tightened to make the tensioning belt 502 subject to continuous tension. After the device is placed inside the pipeline, the tensioning belt 502 can be retracted by loosening the handle 211 using the force of the coil spring 504. At the same time, the tensioning force of the tensioning belt 502 can also be used to press the anti-skid wheel 205 and the driving wheel 206 against the inner wall of the pipeline, so that the driving wheel 206 has sufficient friction with the inner wall of the pipeline, thereby achieving the purpose of using the driving wheel 206 to drive the device to move inside the pipeline. When the device is moved, the drive motor 303 is controlled by an external switch, and the rotating shaft of the drive motor 303 drives the worm 304 to rotate, and the three worm wheels 210 are driven to rotate synchronously, and the power is transmitted to the driven pulley 207 through the driving pulley 209 coaxially connected with the worm wheel 210, and the driven pulley 207 drives the coaxial driving wheel 206 to rotate, so that the device moves smoothly inside the pipeline. After the device reaches the other end of the pipeline, the return journey of the device can be used to spray the inner wall of the pipeline; When performing return spraying, the paint is delivered to the spraying mechanism 4 by an external high-pressure pump, and the motor 303 is driven to reverse, driving the device to move toward one end of the pipe opening into which the device is placed; Before spraying, when the moving ring 202 moves toward the fixed ring 201, the limiting rack 601 will gradually insert into the inside of the limiting rack 601, and the top of the limiting rack 601 meshes with the internal spline gear 609 to drive the internal spline gear 609 to rotate. Through the spline sliding cooperation between the internal spline gear 609 and the moving shaft 608, and the thread cooperation between the moving shaft 608 and the gear box 602, the internal spline gear 609 can drive the moving shaft 608 to rotate and translate inside the gear box 602, so as to adjust the flow value of the flow limiting valve 605, so that when the device is installed inside pipes of different diameters, the flow limiting valve 605 can provide a corresponding flow according to the pipe diameter, so as to adjust the spraying mechanism 4 to have a corresponding spraying amount inside pipes of different diameters, so as to achieve the purpose of making the spraying amount of the paint as similar as possible when the device moves over the same area, and avoid the problem of large difference in spraying thickness when the device sprays pipes of different diameters, that is, increasing the spraying flow inside the pipe with a larger diameter and reducing the spraying flow inside the pipe with a smaller diameter; At the same time, when the driving motor 303 drives the device to return, the power of the driving motor 303 is transmitted to the input shaft 305 through the rotating shaft, and the input shaft 305 and the output shaft 306 are connected by the steel belt 314, so that the power is transmitted to the small gear 308. When the small gear 308 drives the large gear 309 to rotate, the rotating cylinder 401 rotates, and the paint is sprayed on the inner wall of the pipeline in a circular shape. In addition, when spraying pipelines of different diameters, such as Figure 5-Figure 7 As shown, since the hydraulic oil discharge amount in the oil cylinder 603 changes with the position of the limit rack 601, Fig. 9 The extension of the hydraulic rod 316 in the pipeline will also change, thereby adjusting the speed ratio between the input shaft 305 and the output shaft 306. When the inner diameter of the pipeline is large, the hydraulic rod 316 extends, as shown in FIG. Fig. 9 In the state shown in , the input shaft 305 drives the output shaft 306 to rotate faster. At this time, the rotating drum 401 rotates faster, and with the large flow of paint sprayed by the nozzle 404, it can be more suitable for the operation inside the large pipeline. On the contrary, the flow of the nozzle 404 is small inside the small pipeline, and the rotating drum 401 rotates slower, so as to adapt to the spraying of the small diameter pipeline, that is, the rotation speed is faster inside the pipeline with a larger diameter, and the rotation speed is slower inside the pipeline with a smaller diameter; Therefore, when the extension amount of the hydraulic rod 316 changes, when the equipment is operating inside a large-diameter pipeline, the nozzle 404 rotates at a larger diameter, and the flow rate of the paint sprayed is also larger, and the nozzle 404 rotates at a faster speed. When the equipment is operating inside a small-diameter pipeline, the nozzle 404 rotates at a smaller diameter, and the flow rate of the paint sprayed is also smaller, and the nozzle 404 rotates at a slower speed. Combined with the stable moving speed of the driving wheel 206, the equipment can achieve the purpose of evenly spraying a curing layer of the same thickness inside pipelines of different diameters.

[0039] At the same time, when the rotating cylinder 401 rotates, the extension and retraction amount of the telescopic column 405 can be adjusted by the pressure inside the rotating cylinder 401 and the rotation speed of the rotating cylinder 401. When the rotating cylinder 401 rotates, it can effectively offset the change in the center of gravity caused by the extension of the telescopic cylinder 402, preventing the rotating cylinder 401 from excessively shifting the center of gravity when rotating, thereby protecting the equipment.

[0040] The above description is only a preferred specific implementation mode of the present invention. Although the embodiments of the present invention have been shown and described, it can be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents. The protection scope of the present invention is not limited to the above embodiments. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent substitutions or changes according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A municipal pipeline inner wall spraying maintenance device, comprising a main body (1), a driving mechanism (3) is arranged at one end of the main body (1), a spraying mechanism (4) is arranged outside the driving mechanism (3), and a supporting mechanism (2) in contact with the inner wall of the pipeline is arranged in the middle of the main body (1), characterized in that: A regulating mechanism (6) is provided at the lower middle side of the main body (1), and a reeling mechanism (5) for driving the supporting mechanism (2) is provided at both the front and rear sides of the middle of the main body (1); The main body (1) comprises a material delivery pipe (101), the end of which is provided with a joint (102) and a wire (103), the driving mechanism (3) comprises a motor housing (301) and a reduction box (302), the motor housing (301) is provided with a driving motor (303) electrically connected to the wire (103), the spraying mechanism (4) comprises a rotating cylinder (401), the middle of which is provided with a connecting cylinder (408) movably connected to the reduction box (302) via a bearing, and the regulating mechanism (6) comprises a gear box (602), an oil cylinder (603) and a flow limiting valve (605); The support mechanism (2) comprises a moving ring (202) slidably arranged outside the material conveying pipe (101) and a fixed ring (201) fixedly connected to the motor housing (301); a rotating outer rod (203) is movably connected to the fixed ring (201) via a bearing; a rotating inner rod (204) is movably connected to the moving ring (202) via a bearing; a handle (211) is arranged on the side wall of the moving ring (202); the middle parts of the rotating inner rod (204) and the rotating outer rod (203) are movably connected via a pin shaft; the end of the rotating inner rod (204) is movably connected to an anti-slip wheel (205) via a rotating shaft; and the end of the rotating outer rod (203) is movably connected to a driving wheel (206) via a rotating shaft.

2. A municipal pipeline construction inner wall spraying maintenance equipment according to claim 1, characterized in that: A worm (304) is arranged in the middle of the rotating shaft of the driving motor (303); a worm wheel (210) meshing with the worm (304) is arranged on the fixing ring (201); the worm wheel (210) is connected to a driving pulley (209) through a rotating shaft transmission; the driving wheel (206) is connected to a driven pulley (207) through a rotating shaft transmission; and the driven pulley (207) and the driving pulley (209) are connected in power through a transmission belt (208).

3. The municipal pipeline construction inner wall spraying maintenance equipment according to claim 1 is characterized by: An intermediate shaft (505) is arranged inside the winding mechanism (5), the outside of the intermediate shaft (505) is connected to a winding wheel (503) via a coil spring (504), the outside of the winding wheel (503) is fixedly connected to a tensioning belt (502), and the end of the tensioning belt (502) extends from the top of the winding drum (501) and is connected to one side of the moving ring (202).

4. The municipal pipeline construction inner wall spraying maintenance equipment according to claim 1 is characterized by: The bottom of the movable ring (202) is fixedly connected to a limit rack (601); the bottom of the gear box (602) is provided with a rack housing (607) extending to the reduction box (302); the movable end of the limit rack (601) is inserted into the rack housing (607); an internal spline gear (609) is provided inside the gear box (602); the middle part of the internal spline gear (609) is slidably connected to a movable shaft (608) via a spline; the middle part of the movable shaft (608) is threadedly connected to the side wall of the gear box (602).

5. The municipal pipeline construction inner wall spraying maintenance equipment according to claim 4 is characterized by: The interior of the oil cylinder (603) is connected to a sealing gasket (612) via a resilient member (610), a bearing plate (611) is provided on the outside of the sealing gasket (612), the middle of the bearing plate (611) is connected to one end of a movable shaft (608) via a bearing, and the other end of the movable shaft (608) is in contact with an installed flow limiting valve (605) for adjusting the flow of the flow limiting valve (605).

6. The municipal pipeline construction inner wall spraying maintenance equipment according to claim 5 is characterized by: The joint (102) is connected to the inlet of the flow limiting valve (605) through the material delivery hose (606), and a curved pipe (407) is arranged inside the reduction box (302) and is connected to the outlet of the flow limiting valve (605) through the material delivery hose (606). The end of the curved pipe (407) is connected to the inside of the connecting tube (408) through a sealing bearing.

7. The municipal pipeline construction inner wall spraying maintenance equipment according to claim 1 is characterized by: A telescopic cylinder (402) is movably inserted into the top of the rotating cylinder (401), a nozzle (404) is arranged on the top of the telescopic cylinder (402), a sealing ring (413) is arranged on one end of the telescopic cylinder (402) inserted into the interior of the rotating cylinder (401), an external elastic member (412) is fixedly connected to the inner bottom wall of the rotating cylinder (401), and the top of the external elastic member (412) is fixedly connected to the sealing ring (413).

8. The municipal pipeline construction inner wall spraying maintenance equipment according to claim 1 is characterized by: An output shaft (306) and an input shaft (305) are provided inside the reduction box (302); the input shaft (305) is dynamically connected to the end of the rotating shaft of the driving motor (303); a gear shaft (307) is provided at the end of the output shaft (306); a pinion gear (308) is key-connected to the gear shaft (307); a large gear (309) is provided outside the connecting tube (408); the large gear (309) is meshed with the small gear (308).

9. The municipal pipeline construction inner wall spraying maintenance equipment according to claim 8, characterized in that: An input fixed cone wheel (313) is fixedly arranged on the input shaft (305), an input movable cone wheel (312) is fixedly arranged on the input shaft (305), an output movable cone wheel (311) is fixedly arranged on the output shaft (306), and an output fixed cone wheel (310) is fixedly arranged on the output shaft (306). A steel belt (314) is used for transmission between the output fixed cone wheel (310) and the input fixed cone wheel (313). A hydraulic cylinder (315) is arranged in the middle of the inner wall of the reduction box (302). The hydraulic cylinder (315) is connected to the oil cylinder (603) through an oil pipe (604). A hydraulic rod (316) is arranged at the end of the hydraulic cylinder (315). The middle and end of the hydraulic rod (316) are connected to the output movable cone wheel (311) and the input movable cone wheel (312) through a bearing ring (317).

10. The municipal pipeline construction inner wall spraying maintenance equipment according to claim 1, characterized in that: A sealing cylinder (409) is disposed upwardly on the inner bottom wall of the rotating cylinder (401); a sealing plate (410) is slidably disposed inside the sealing cylinder (409); a telescopic column (405) penetrating downwardly through the rotating cylinder (401) is disposed at the bottom of the sealing plate (410); a weighted ball (406) is disposed at the bottom of the telescopic column (405); an inner elastic member (411) is fixedly connected to the inner bottom wall of the sealing cylinder (409); and the top of the inner elastic member (411) is fixedly connected to the sealing plate (410).

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