CN110672350A

CN110672350A - Join in marriage automatic sampling device of net twine way insulator

Info

Publication number: CN110672350A
Application number: CN201910891203.7A
Authority: CN
Inventors: 姚登鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-01-10

Abstract

The invention belongs to the field of insulator detection, and particularly relates to an automatic sampling device for distribution network line insulators, which comprises a clamping plate A, a clamping plate B, a volute spring, a swinging plate and the like, wherein the tail end of the vertical section of the L-shaped clamping plate A is hinged with the clamping plate B, and the volute spring for resetting the clamping plate B is arranged on a hinged shaft; according to the invention, the composite insulator does not need to be taken off from a circuit to cut and sample the composite insulator, only the circuit needs to be powered off, the composite insulator is clamped on the insulator shed and manually rotates for a certain distance along the shed, the sampling of the surface material of the insulator can be realized, and the thickness of the sampled material is 1-2 mm; the sampling mode has no damage to the insulator, high sampling precision and simple sampling operation, and is time-saving and labor-saving.

Description

Join in marriage automatic sampling device of net twine way insulator

Technical Field

The invention belongs to the field of insulator detection, and particularly relates to an automatic sampling device for distribution network line insulators.

Background

With the rapid development of extra-high voltage engineering, more and more composite insulators are applied to extra-high voltage transmission and distribution lines in China, and the aging problem of the composite insulators is obvious due to the fact that the outer insulating materials of the composite insulators are organic silicon rubber, the voltage grade is improved, and the operation environment is severe. Testing the aging state of the composite insulator by cutting and sampling a small amount of materials on the insulator; the existing cutting method needs to take off the composite insulator from the line and use a common cutter to cut, and the method has poor precision, complex operation of line maintenance personnel and time and labor waste. In addition, in order to ensure the cleanness and the detection accuracy of an aged sample, the surface of an insulator generally needs to be polluted by manual work at the sampling position, the working process is complicated, and the working efficiency is low. With the rapid development of social economy, the industry has also developed rapidly, and environmental pollution in some areas has become very severe, and the damage caused by flashover accidents of the external insulation of power transmission and transformation equipment of a power system caused by dust or dirt is becoming more and more serious. The insulator is one of the important elements of the external insulation equipment of the power system, and the dirt accumulation degree on the surface of the insulator has important influence on the operation condition of the power transmission line. At present, Equivalent Salt Deposit Density (ESDD) and equivalent ash deposit density (NSDD) are mainly adopted in China to represent the surface pollution degree of the insulator. For years, the sampling method for the dirt on the surface of the insulator is to directly wipe the surface of the insulator by holding a sampling cloth with hands to perform dirt sampling work, and the sampling method has great defects as follows: the distance between the umbrella skirts of some insulator strings is small, so that the insulator strings are difficult to wipe by hands; in the process of wiping the insulator, dirt on the surface of the insulator is easily adhered to hands, arms and clothes, so that the dirt sampling of the insulator is incomplete, and errors are brought to the subsequent measurement of the dirt degree on the surface of the insulator.

The invention designs an automatic sampling device for distribution network line insulators, which solves the problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention discloses an automatic sampling device for distribution network line insulators, which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally use, which are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The utility model provides a join in marriage automatic sampling device of net twine way insulator which characterized in that: the automatic feeding device comprises a clamping plate A, a clamping plate B, volute spiral springs, an elastic block, sampling cloth, a roller, a rolling shaft, a roller, a cutting knife, a transmission strip, a reset spring, a storage box, a shovel knife, a knife rest, a rack, a straight gear, a swinging plate, a limiting plate, an L-shaped plate and a limiting strip, wherein the tail end of a vertical section of the L-shaped clamping plate A is hinged with the clamping plate B, and the volute spiral springs for resetting the clamping plate B are mounted on a hinged shaft; two elastic blocks are symmetrically arranged on the plate surface of the clamping plate A opposite to the clamping plate B, and sampling cloth for dust removal is arranged on each elastic block; a rolling shaft perpendicular to the plate surface of the vertical section of the clamping plate A is arranged on the lower plate surface of the horizontal section of the clamping plate A, and an elastic roller is arranged on the rolling shaft; the rack with the lower end provided with the tool rest slides in the through chute B on the horizontal section plate surface of the clamping plate A in an inclined manner; a through groove is formed in the center of the tool rest, and a storage box is mounted at the through groove; the lower edge of the notch of the through groove of the tool rest is in contact with the roller; the storage box and the roller are respectively positioned on two sides of the knife rest; the lower end of the knife rest is provided with a scraper knife for sampling, and the scraper knife is positioned below the roller; the knife rest is provided with a guiding sheet which is positioned between the roller and the scraper knife.

Two rollers are symmetrically arranged on the inner side surface of the vertical section of the clamping plate A, and the axis of the roller is vertical to the plate surface of the horizontal section of the clamping plate A; the rolling shaft is in transmission connection with a shaft where the roller is located; the transmission strip slides in a through chute A on the side surface of the vertical section of the clamping plate A along the direction parallel to the rolling shaft; a cutting knife used for cutting the sampled products is arranged at one end of the transfer strip between the clamping plate A and the clamping plate B; the transfer strip is provided with a return spring for returning the transfer strip; a straight gear meshed with the rack is arranged on the upper plate surface of the horizontal section of the clamping plate A; one end of the swinging plate is hinged on the outer side surface of the vertical section of the clamping plate A, and the hinged shaft is vertical to the horizontal section of the clamping plate A; a shaft where the straight gear is arranged is in transmission connection with a hinged shaft at one end of the swinging plate; the swinging plate is positioned below the transmission strip, and a limiting plate matched with the transmission strip is arranged on the upper plate surface of the swinging plate; a limiting strip is arranged on the outer side surface of the vertical section of the clamping plate A; the limiting strip and the swinging plate are respectively positioned on two sides of the transmission strip, a bulge is arranged on the side surface of one end of the limiting strip, and the bulge is positioned between the limiting strip and the swinging plate.

As a further improvement of the technology, the sampling cloth is adhered to the corresponding elastic block through magic tape. The sampling cloth adhered to the corresponding elastic block through the magic tape can be repeatedly replaced.

As a further improvement of the technology, the bottom surface of the through groove of the tool rest is an outward convex cambered surface tangent to the cylindrical surface of the roller, so that the outward convex cambered surface guided by the rotary roller at the bottom of the through groove of the tool rest is guided again to accurately enter the storage box butted with the notch of the through groove; the surface of the guide plate opposite to the shovel blade is an outward convex cambered surface, so that when the surface of the insulator is shoveled, one end of a shoveled sample is enabled to be upwarped; if the guide piece is not arranged, the upraised end of the scooped sample cannot smoothly enter between the roller and the knife rest and enter the storage box under the driving of the rotating roller; because the guide sheet exists, and the surface of the guide sheet opposite to the scraper knife is the convex cambered surface, the upturned end of the insulator surface sample which is scooped up reaches between the rotary roller and the knife rest through the guide of the convex cambered surface of the guide sheet opposite to the scraper knife, and enters between the roller and the knife rest under the drive of the rotary roller and smoothly enters the storage box under the drive of the roller.

As a further improvement of the technology, the guide sheet is arranged at the lower end of the knife rest through two fixing blocks which are symmetrically distributed at the two ends of the guide sheet, and the two fixing blocks are fixedly connected with the two sides of the lower end of the knife rest respectively.

As a further improvement of the technology, the two rollers are arranged on the inner side surface of the vertical section of the clamping plate A through a fixed seat C; the rolling shaft is arranged on the lower plate surface of the horizontal section of the clamping plate A through a fixed seat B matched with the bearing of the rolling shaft; the roller is provided with a bevel gear D which is meshed with a bevel gear C arranged on a shaft on which the corresponding roller is arranged.

As a further improvement of the technology, two guide blocks are symmetrically arranged on the side surface of the rack, and the two guide blocks respectively slide in two guide grooves symmetrically distributed on the inner wall of the sliding groove B. The rack can not be separated from the sliding groove B in the sliding process of the sliding groove B due to the matching of the guide groove and the guide block.

As a further improvement of the technology, a V-shaped frame is arranged at one end of the transfer strip between the clamping plate A and the clamping plate B, and the V-shaped frame and the knife rest are respectively arranged at two sides of the roller; the cutting knife is arranged at the lower end of the V-shaped frame; the transmission strip is provided with a tension spring plate, one end of the reset spring is connected with the tension spring plate, and the other end of the reset spring is connected with the inner wall of the vertical section of the clamping plate A.

As a further improvement of the technology, a shaft on which the straight gear is arranged is matched with a bearing of a fixed seat A fixedly arranged on the upper plate surface of the horizontal section of the clamping plate A; a bevel gear B is arranged on a shaft where the straight gear is arranged, and a bevel gear A meshed with the bevel gear B is arranged on a hinged shaft of the swing plate and the clamping plate A in a hinged mode.

As a further improvement of the technology, the volute spiral spring is nested on a hinged shaft of the clamping plate A and the clamping plate B, and the volute spiral spring is positioned in a ring groove on the inner wall of a hinged hole at the hinged end of the clamping plate B; one end of the volute spiral spring is connected with the inner wall of the annular groove of the inner wall of the hinge hole of the hinge end of the clamping plate B, and the other end of the volute spiral spring is connected with the hinge shaft of the clamping plate A and the hinge shaft of the clamping plate B.

Compared with the traditional insulator detection equipment, the composite insulator is not required to be taken off from a line to cut and sample the composite insulator, only the circuit is required to be powered off, the composite insulator is clamped on the insulator shed and manually rotates for a certain distance along the shed to sample the surface material of the insulator, and the thickness of the sampled material is 1-2 mm; the sampling mode has no damage to the insulator, high sampling precision and simple, time-saving and labor-saving sampling operation; in the sampling process, in order to ensure the cleanness and the detection accuracy of an aged sample, the invention can automatically wipe dirt or dust on the sampling part on the surface of the umbrella skirt to be sampled, thereby saving the sampling time and improving the sampling work efficiency. The insulator is suitable for insulators with small space between the umbrella skirts, and the two clamping plates can respectively extend into gaps at the upper umbrella surface and the lower umbrella surface of the umbrella skirt to wipe the upper umbrella surface and the lower umbrella surface of the umbrella skirt; in the process of wiping the insulator, dirt on the surface of the insulator cannot be adhered to hands, arms and clothes, so that errors caused by incomplete sampling of the dirt on the surface of the insulator in subsequent measurement of the dirt on the surface of the insulator are avoided; in addition, when the invention samples the contamination of the insulator, two sampling cloths can respectively sample the contamination of the upper umbrella surface and the lower umbrella surface of the insulator, and after the two sampling cloths sampled with the contamination are analyzed, the maximum contamination degree in the two sampling cloths sampled with the contamination is taken as the standard; compared with the method that only the sampling cloth is used for collecting the dirt on the upper umbrella surface or the lower umbrella surface of the insulator in a transmission mode, the method has the advantages that the dirt measurement precision obtained by simultaneously sampling the upper umbrella surface and the lower umbrella surface of the insulator is higher; the invention has simple structure and better use effect.

Drawings

Figure 1 is a schematic cross-sectional view of the device as a whole.

Fig. 2 is a schematic sectional view of the clamp plate a, the gear, the rack, the knife rest, the scraper knife, the guide piece, the roller and the cutter.

FIG. 3 is a schematic cross-sectional view of the combination of the clamp plate A, the transfer bar, the V-shaped frame, the cutter, the roller, the guide piece and the scraper knife.

FIG. 4 is a cross-sectional view of the roller, bevel gear C, bevel gear D and roller.

Fig. 5 is a schematic view of the clamp plate a, the clamp plate B, the elastic block and the sampling cloth.

Fig. 6 is a schematic view showing the combination of the rack, the storage box, the knife rest, the scraper knife, the guide piece, the cutting knife, the V-shaped frame and the transfer strip.

Fig. 7 is a schematic cross-sectional view showing the engagement of the rack, the blade holder, the storage case, the scraper, and the guide piece.

Fig. 8 is a partial sectional view of the splint a.

Number designation in the figures: 1. a splint A; 2. a chute A; 3. a chute B; 4. a splint B; 5. a volute spiral spring; 6. an elastic block; 7. magic tape; 8. sampling cloth; 9. a drum; 10. a bevel gear D; 11. a roller; 12. a fixed seat B; 13. a bevel gear C; 14. a roller; 15. a fixed seat C; 16. cutting; 17. a V-shaped frame; 18. a transfer strip; 19. a tension spring plate; 20. a return spring; 21. a storage box; 22. a scraper knife; 23. a guide piece; 24. a fixed block; 25. a tool holder; 26. a rack; 27. a guide block; 28. a guide groove; 29. a spur gear; 31. a bevel gear B; 32. a bevel gear A; 33. a fixed seat A; 35. a swinging plate; 37. a limiting plate; 38. an L plate; 39. a limiting strip; 40. a through groove.

Detailed Description

The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1 and 2, the sampling device comprises a clamping plate a1, a clamping plate B4, a volute spiral spring 5, an elastic block 6, sampling cloth 8, a roller 9, a roller 11, a roller 14, a cutting knife 16, a transmission strip 18, a return spring 20, a storage box 21, a scraper knife 22, a knife rest 25, a rack 26, a spur gear 29, a swing plate 35, a limit plate 37, an L plate 38 and a limit strip 39, wherein as shown in fig. 1 and 5, the tail end of the vertical section of the L-shaped clamping plate a1 is hinged with the clamping plate B4, and the volute spiral spring 5 for returning the clamping plate B4 is mounted on a hinged shaft; two elastic blocks 6 are symmetrically arranged on the plate surface of the clamping plate A1 opposite to the clamping plate B4, and each elastic block 6 is provided with a sampling cloth 8 for dust removal; as shown in fig. 2, 3 and 4, a roller 11 perpendicular to the vertical section plate surface of the clamping plate a1 is arranged on the lower plate surface of the horizontal section of the clamping plate a1, and an elastic roller 9 is arranged on the roller 11; as shown in fig. 1 and 2, the rack 26 with the knife rest 25 mounted at the lower end slides obliquely in the through chute B3 on the horizontal plate surface of the clamping plate a 1; as shown in fig. 6 and 7, a through groove 40 is formed in the center of the tool rest 25, and a storage box 21 is installed at the through groove 40; as shown in fig. 2, the lower edge of the notch of the through groove 40 of the tool rest 25 is in contact with the roller 9; the storage box 21 and the roller 9 are respectively positioned at two sides of the knife rest 25; as shown in fig. 2, 6 and 7, the lower end of the knife rest 25 is provided with a scraper knife 22 for sampling, and the scraper knife 22 is positioned below the roller 9; the blade holder 25 is provided with a guide piece 23, and the guide piece 23 is positioned between the roller 9 and the blade 22.

As shown in fig. 1, 3 and 4, two rollers 14 are symmetrically mounted on the inner side surface of the vertical section of the clamping plate a1, and the axis of the roller 14 is perpendicular to the plate surface of the horizontal section of the clamping plate a 1; as shown in fig. 1, the roller 11 is in transmission connection with a shaft on which a roller 14 is arranged; as shown in fig. 1, 3 and 5, the transfer bar 18 slides in a through chute a2 on the side of the vertical section of the jaw a1 in a direction parallel to the rollers 11; as shown in fig. 3 and 6, a cutting knife 16 for cutting the sampled products is mounted on one end of the transfer bar 18 between the clamping plate a1 and the clamping plate B4; the transfer bar 18 is provided with a return spring 20 for returning the transfer bar; as shown in fig. 1 and 2, a straight gear 29 meshed with the rack 26 is arranged on the upper plate surface of the horizontal segment of the clamping plate a 1; one end of the swinging plate 35 is hinged on the outer side surface of the vertical section of the clamping plate A1, and the hinged shaft is vertical to the horizontal section of the clamping plate A1; a shaft of the straight gear 29 is in transmission connection with a hinged shaft at one end of the swing plate 35; the swinging plate 35 is positioned below the transmission strip 18, and a limiting plate 37 matched with the transmission strip 18 is arranged on the upper plate surface of the swinging plate 35; the outer side surface of the vertical section of the clamping plate A1 is provided with a limit strip 39; the limiting strip 39 and the swinging plate 35 are respectively located on two sides of the transfer strip 18, a protrusion is arranged on one side face of one end of the limiting strip 39, and the protrusion is located between the limiting strip 39 and the swinging plate 35.

As shown in fig. 5, the sampling cloth 8 is adhered to the corresponding elastic block 6 by the hook and loop fastener 7. The sampling cloth 8 pasted on the corresponding elastic block 6 through the magic tape 7 can be repeatedly replaced.

As shown in fig. 2 and 7, the bottom surface of the through groove 40 of the tool rest 25 is an outward convex cambered surface tangent to the cylindrical surface of the roller 9, so that the outward convex cambered surface guided by the rotating roller 9 at the bottom of the through groove 40 of the tool rest 25 is guided again to enter the storage box 21 butted with the notch of the through groove 40 without error; the surface of the guide sheet 23 opposite to the shovel blade 22 is an outward convex cambered surface, so that when the surface of the insulator is shoveled, one end of a shoveled sample is enabled to be upwarped; if the guide piece 23 is not provided, the lifted sample cannot smoothly enter between the roller 9 and the knife rest 25 and enter the storage box 21 under the driving of the rotating roller 9; because the guide sheet 23 exists, and the surface of the guide sheet 23 opposite to the scraper knife 22 is a convex arc surface, the raised end of the insulator skin sample reaches between the rotary roller 9 and the knife rest 25 through the guide of the convex arc surface of the guide sheet 23 opposite to the scraper knife 22, and enters between the rotary roller 9 and the knife rest 25 under the drive of the rotary roller 9 and smoothly enters the storage box 21 under the drive of the rotary roller 9.

As shown in fig. 6, the guiding plate 23 is mounted at the lower end of the tool holder 25 through two fixing blocks 24 symmetrically distributed at two ends of the guiding plate, and the two fixing blocks 24 are respectively and fixedly connected with two sides of the lower end of the tool holder 25.

As shown in fig. 1, 3 and 4, the two rollers 14 are mounted on the inner side surface of the vertical section of the clamping plate a1 through a fixing seat C15; as shown in fig. 1, the roller 11 is mounted on the lower plate surface of the horizontal segment of the clamping plate a1 through a fixing seat B12 matched with the bearing; the roller 11 is provided with a bevel gear D10, the bevel gear D10 meshing with a bevel gear C13 mounted on the shaft of the respective roller 14.

As shown in fig. 2, 6 and 8, two guide blocks 27 are symmetrically installed on the side surface of the rack 26, and the two guide blocks 27 respectively slide in two guide grooves 28 symmetrically distributed on the inner wall of the sliding groove B3. The engagement of the guide slot 28 with the guide block 27 prevents the rack 26 from disengaging from the slide slot B3 during sliding along the slide slot B3.

As shown in fig. 2 and 3, a V-shaped frame 17 is mounted at one end of the transfer bar 18 between the clamping plate a1 and the clamping plate B4, and the V-shaped frame 17 and the knife rest 25 are respectively located at two sides of the drum 9; the cutting knife 16 is arranged at the lower end of the V-shaped frame 17; the transmission strip 18 is provided with a tension spring plate 19, one end of a return spring 20 is connected with the tension spring plate 19, and the other end of the return spring is connected with the inner wall of the vertical section of the clamping plate A1.

As shown in fig. 1, the shaft of the spur gear 29 is in bearing fit with a fixed seat a33 fixedly arranged on the upper plate surface of the horizontal section of the clamping plate a 1; a bevel gear B31 is arranged on the shaft of the straight gear 29, and a bevel gear A32 meshed with the bevel gear B31 is arranged on a hinge shaft hinged with the swing plate 35 and the clamping plate A1.

As shown in fig. 5, the spiral spring 5 is nested on the hinge shaft of the clamping plate a1 and the clamping plate B4, and the spiral spring 5 is located in the annular groove on the inner wall of the hinge hole at the hinge end of the clamping plate B4; one end of the scroll spring 5 is connected with the inner wall of the ring groove of the inner wall of the hinge hole at the hinge end of the clamping plate B4, and the other end is connected with the hinge shaft of the clamping plate A1 and the clamping plate B4.

According to the invention, the elastic block 6 enables the sampling cloth 8 arranged on the elastic block to be in complete contact with the arc-shaped skirt surface on the insulator umbrella skirt, so that the sampling cloth 8 can thoroughly clean dust or dirt on the arc-shaped skirt surface of the umbrella skirt without dead angles.

The invention is mainly applied to sampling and dust removal of the post insulator.

As shown in figure 2, the elastic roller 9 of the invention is always in contact with and extrudes the tool rest 25, so that the insulator sample which is scooped up by the shovel blade 22 is guided by the guide sheet 23 to enter between the roller 9 and the tool rest 25, and is driven by the extrusion of the rotating roller 9 to enter the storage box 21 through the convex cambered surface on the bottom surface of the through groove 40 of the tool rest 25.

The working process of the invention is as follows: in an initial state, the plate end of the limit plate 37 is in contact with the side surface of the transmission strip 18, and a certain distance is reserved between the bulge on the limit strip 39 and the swing plate 35; the cutting knife 16 is positioned on one side of the scraper knife 22 close to the inner wall of the vertical section of the clamping plate A1, and the roller 9 is in extrusion fit with the lower edge of the notch of the through groove 40 on the knife rest 25; the scroll spring 5 is compressed and stores energy, and the two sampling cloths 8 are tightly attached to each other.

When the invention is needed to sample dust or dirt on the insulator umbrella skirt, the clamping plate B4 and the clamping plate A1 are firstly opened by hands to open the two, and the volute spiral spring 5 further deforms; under the action of the deformed volute spring 5, the clamping plate A1 and the clamping plate B4 are clamped on the umbrella skirt of the insulator, the clamping plate A1 and the sampling cloth 8 on the clamping plate B4 are respectively contacted with the upper umbrella surface and the lower umbrella surface of the umbrella skirt of the insulator, the edge of the umbrella skirt is clung to the inner grooves of the two rollers 14, and then one end of the swinging plate 35 is held by a hand to rotate the umbrella skirt, so that the umbrella skirt moves circumferentially around the skirt surface of the umbrella skirt of the insulator; in the moving process, the swinging plate 35 drives the whole device to move circumferentially around the skirt surface of the insulator shed through the limiting plate 37 and the transmission strip 18, and the sampling cloth 8 on the clamping plate A1 and the clamping plate B4 wipes and cleans dust or dirt on the skirt surface of the insulator shed; after cleaning, the umbrella skirt is taken down, the volute spiral spring 5 releases energy and restores the initial state, and then the sampling cloth 8 is replaced; and (3) placing the two sampling cloths 8 with filth into the sampling bag, sealing and storing the sampling cloths, and then sending the sampling cloths to a laboratory for filth analysis.

When the sampling is required to be collected, cut and sampled on the skirt surface of the insulator umbrella skirt, the insulator umbrella skirt is clamped on the insulator umbrella skirt as described above, the edge of the insulator umbrella skirt is tightly attached to the inner grooves of the rims of the two rollers 14 arranged on the inner side of the vertical section of the clamping plate A1, the sampling cloth 8 on the clamping plate A1 is contacted with the upper skirt surface of the umbrella skirt, the sampling cloth 8 on the clamping plate B4 is contacted with the lower skirt surface of the umbrella skirt, and the volute spiral spring 5 is further deformed and stores energy; then the L plate 38 is pushed by hand to enable the transfer bar 18 to move towards the insulator direction along the sliding groove A2, and the transfer bar 18 drives the return spring 20 to stretch and store energy through the tension spring plate 19; the transmission strip 18 simultaneously drives the cutting knife 16 to synchronously move through a V-shaped frame 17 arranged on the transmission strip; the transmission bar 18 and the end face of the limit plate 37 slide relatively; when the end of the transmission bar 18 located outside the clamping plate a1 is disengaged from the end face of the stopper plate 37, the transmission bar 18 releases the swinging of the swinging plate 35 with respect to the clamping plate a1, and the cutting knife 16 reaches the other side of the blade 22; then, the swinging plate 35 is shifted around the circumferential direction of the insulator shed by hand, so that the swinging plate 35 swings around the direction of a hinged axial limit strip 39 hinged with the clamping plate A1 relative to the clamping plate A1; in the swinging process of the swinging plate 35, as the clamping plate A1 and the clamping plate B4 clamp the insulator shed under the action of the volute spiral spring 5, the friction force between the insulator shed and the clamping plates A1 and B4 is large enough, and the swinging plate 35 can swing relative to the clamping plate A1; in the process, the tail end of the transmission bar 18 is in contact with the plate surface of the limiting plate 37 and is limited by the plate surface of the limiting plate 37 to reset; meanwhile, the swinging plate 35 drives the bevel gear A32 to rotate through a hinge shaft hinged with the clamping plate A1, and the bevel gear A32 drives the straight gear 29 to rotate through a shaft on which the bevel gear B31 and the bevel gear B31 are arranged; the straight gear 29 drives the rack 26 to move downwards along the sliding groove B3 on the clamping plate A1 in an inclined mode, the rack 26 drives the scraper knife 22 and the guide piece 23 to move synchronously through the knife rest 25, and the scraper knife 22 moves deeply into the skirt surface of the umbrella skirt of the insulator; when the swinging plate 35 swings to the protrusion on the side surface of the tail end of the limiting strip 39 relative to the splint A1, the protrusion on the side surface of the tail end of the limiting strip 39 limits the swinging plate 35 to continue swinging relative to the splint A1, and at the moment, the swinging plate 35 drives the scraper knife 22 to penetrate into the insulator epidermal layer by 1-2 mm depth through a hinge shaft hinged with the splint A1, a bevel gear A32, a bevel gear B31, a straight gear 29, a rack 26 and a knife rest 25.

The swinging plate 35 is continuously shifted in the same direction, the swinging plate 35 does not swing relative to the clamping plate A1 any more, the swinging plate 35 drives the whole device to synchronously move along the circumferential direction of the skirt surface of the insulator umbrella skirt through the limiting strip 39, the two rollers 14 are driven by the edge of the insulator umbrella skirt to rotate, one roller 14 drives a bevel gear C13 which is coaxial with the roller through the shaft where the roller is located to synchronously rotate, and the bevel gear C13 drives the roller 11 to synchronously rotate through a bevel gear D10 which is meshed with the bevel gear C3526 to synchronously rotate the roller 11 and drive the roller 9 to synchronously rotate; in the process that the swinging plate 35 drives the whole device to synchronously move along the circumferential direction of the skirt surface of the insulator shed through the limiting strip 39, the sampling cloth 8 on the clamping plate A1 and the clamping plate B4 wipes dust or dirt on the skirt surface of the insulator shed; meanwhile, the shovel 22 shovels and samples the surface skin of the skirt surface of the insulator; in the process of shoveling and sampling the insulator skirt surface skin by the shovel blade 22, the tail end of a shoveled sample on the insulator skirt surface skin is just curled and upwarps and is pressed by the guide piece 23 positioned above, along with the axial movement of equipment along the insulator umbrella skirt surface, the length of the shoveled sample is continuously increased, and the tail end of the sample enters between the roller 9 and the knife rest 25 under the guide of the guide piece 23 and enters the storage box 21 through the through groove 40 on the knife rest 25 under the drive of the rotating roller 9; in the process of shoveling and sampling the insulator by the invention driven by the swinging plate 35, one end of the transmission strip 18 is always in contact with the surface of the limiting plate 37.

When the length of the sampled product meets the required requirement, stopping poking the swinging plate 35 and stopping the circumferential motion of the whole device along the surface of the insulator umbrella skirt; the two rollers 14 stop rotating, and the roller 9 in transmission connection with one roller 14 stops rotating; the shovel 22 stops shoveling the skirt surface of the insulator shed; then the swinging plate 35 is shifted to the opposite direction, and as the clamping plate A1 and the clamping plate B4 are clamped on the insulator shed under the action of the volute spiral spring 5, the friction force between the insulator and the clamping plates A1 and B4 prevents the swinging plate 35 from driving the whole equipment to perform reverse circular motion along the surface of the insulator shed; the swinging plate 35 swings reversely relative to the clamping plate A1; the swinging plate 35 is separated from the bump on the limit strip 39, and the swinging plate 35 drives the rack 26 to move to the initial position along the chute B3 through a hinge shaft hinged with the splint A1, a bevel gear A32, a bevel gear B31 and a straight gear 29 coaxial with the bevel gear B31; the rack 26 drives the shovel blade 22 and the guide sheet 23 to synchronously move through the tool rest 25; the scraper knife 22 gradually separates from the surface of the insulator umbrella skirt; when the swinging plate 35 swings back to the initial position relative to the clamping plate A1, the plate surface of the limiting plate 37 which moves synchronously with the swinging plate 35 just separates from the tail end of the transmission strip 18, and the scraper knife 22 is completely separated from the surface of the insulator shed and reset; the limit plate 37 releases the reset limit of the transfer bar 18; under the reset action of the reset spring 20, the transmission strip 18 is reset instantly; in the resetting process of the transfer strip 18, the transfer strip 18 drives the cutting knife 16 to move synchronously through the V-shaped frame 17, and the cutting knife 16 cuts off the collected sample transversely; after the operation of collecting the sample is finished, the insulator is taken off, the clamp plate A1 and the clamp plate B4 are restored to the initial state under the reset action of the volute spiral spring 5, and the collected sample is taken out from the storage box 21.

In conclusion, the invention has the beneficial effects that: according to the invention, the composite insulator does not need to be taken off from a circuit to cut and sample the composite insulator, only the circuit needs to be powered off, the composite insulator is clamped on the insulator shed and manually rotates for a certain distance along the shed, the sampling of the surface material of the insulator can be realized, and the thickness of the sampled material is 1-2 mm; the sampling mode has no damage to the insulator, high sampling precision and simple, time-saving and labor-saving sampling operation; in the sampling process, in order to ensure the cleanness and the detection accuracy of an aged sample, the invention can automatically wipe dirt or dust on the sampling part on the surface of the umbrella skirt to be sampled, thereby saving the sampling time and improving the sampling work efficiency. The insulator is suitable for insulators with small space between the umbrella skirts, and the two clamping plates can respectively extend into gaps at the upper umbrella surface and the lower umbrella surface of the umbrella skirt to wipe the upper umbrella surface and the lower umbrella surface of the umbrella skirt; in the process of wiping the insulator, dirt on the surface of the insulator cannot be adhered to hands, arms and clothes, so that errors caused by incomplete sampling of the dirt on the surface of the insulator in subsequent measurement of the dirt on the surface of the insulator are avoided; in addition, when the invention samples the contamination of the insulator, two sampling cloths 8 can respectively sample the contamination of the upper umbrella surface and the lower umbrella surface of the insulator, and after the two sampling cloths 8 sampled with the contamination are analyzed, the maximum contamination degree of the two sampling cloths 8 sampled with the contamination is taken as the standard; compared with the transmission method that only 8 sampling cloths are used for collecting the dirt on the upper umbrella surface or the lower umbrella surface of the insulator, the method provided by the invention has the advantage that the dirt measurement precision obtained by simultaneously sampling the upper umbrella surface and the lower umbrella surface of the insulator is higher.

Claims

1. The utility model provides a join in marriage automatic sampling device of net twine way insulator which characterized in that: the automatic feeding device comprises a clamping plate A, a clamping plate B, volute spiral springs, an elastic block, sampling cloth, a roller, a rolling shaft, a roller, a cutting knife, a transmission strip, a reset spring, a storage box, a shovel knife, a knife rest, a rack, a straight gear, a swinging plate, a limiting plate, an L-shaped plate and a limiting strip, wherein the tail end of a vertical section of the L-shaped clamping plate A is hinged with the clamping plate B, and the volute spiral springs for resetting the clamping plate B are mounted on a hinged shaft; two elastic blocks are symmetrically arranged on the plate surface of the clamping plate A opposite to the clamping plate B, and sampling cloth for dust removal is arranged on each elastic block; a rolling shaft perpendicular to the plate surface of the vertical section of the clamping plate A is arranged on the lower plate surface of the horizontal section of the clamping plate A, and an elastic roller is arranged on the rolling shaft; the rack with the lower end provided with the tool rest slides in the through chute B on the horizontal section plate surface of the clamping plate A in an inclined manner; a through groove is formed in the center of the tool rest, and a storage box is mounted at the through groove; the lower edge of the notch of the through groove of the tool rest is in contact with the roller; the storage box and the roller are respectively positioned on two sides of the knife rest; the lower end of the knife rest is provided with a scraper knife for sampling, and the scraper knife is positioned below the roller; the knife rest is provided with a guide sheet which is positioned between the roller and the scraper knife;

2. The automatic sampling device of distribution network line insulator of claim 1, characterized in that: the sampling cloth is adhered to the corresponding elastic block through magic tape.

3. The automatic sampling device of distribution network line insulator of claim 1, characterized in that: the bottom surface of the through groove of the tool rest is an outward convex cambered surface tangent to the cylindrical surface of the roller; the surface of the guide plate opposite to the scraper knife is an outward convex cambered surface.

4. The automatic sampling device of distribution network line insulator of claim 1, characterized in that: the guide piece is arranged at the lower end of the knife rest through two fixing blocks which are symmetrically distributed at the two ends of the guide piece, and the two fixing blocks are fixedly connected with the two sides of the lower end of the knife rest respectively.

5. The automatic sampling device of distribution network line insulator of claim 1, characterized in that: the two rollers are arranged on the inner side surface of the vertical section of the clamping plate A through a fixed seat C; the rolling shaft is arranged on the lower plate surface of the horizontal section of the clamping plate A through a fixed seat B matched with the bearing of the rolling shaft; the roller is provided with a bevel gear D which is meshed with a bevel gear C arranged on a shaft on which the corresponding roller is arranged.

6. The automatic sampling device of distribution network line insulator of claim 1, characterized in that: two guide blocks are symmetrically arranged on the side surface of the rack, and the two guide blocks respectively slide in two guide grooves symmetrically distributed on the inner wall of the sliding groove B.

7. The automatic sampling device of distribution network line insulator of claim 1, characterized in that: one end of the transfer strip, which is positioned between the clamping plate A and the clamping plate B, is provided with a V-shaped frame, and the V-shaped frame and the knife rest are respectively positioned at two sides of the roller; the cutting knife is arranged at the lower end of the V-shaped frame; the transmission strip is provided with a tension spring plate, one end of the reset spring is connected with the tension spring plate, and the other end of the reset spring is connected with the inner wall of the vertical section of the clamping plate A.

8. The automatic sampling device of distribution network line insulator of claim 1, characterized in that: the shaft of the straight gear is matched with a bearing of a fixed seat A fixedly arranged on the upper plate surface of the horizontal section of the clamping plate A; a bevel gear B is arranged on a shaft where the straight gear is arranged, and a bevel gear A meshed with the bevel gear B is arranged on a hinged shaft of the swing plate and the clamping plate A in a hinged mode.

9. The automatic sampling device of distribution network line insulator of claim 1, characterized in that: the volute spiral spring is nested on a hinged shaft of the clamping plate A and the clamping plate B and is positioned in a ring groove on the inner wall of a hinged hole at the hinged end of the clamping plate B; one end of the volute spiral spring is connected with the inner wall of the annular groove of the inner wall of the hinge hole of the hinge end of the clamping plate B, and the other end of the volute spiral spring is connected with the hinge shaft of the clamping plate A and the hinge shaft of the clamping plate B.