Composite cross arm insulator
Technical Field
The invention relates to the technical field of power grid laying, in particular to a composite cross arm insulator.
Background
The cross arm insulator is mainly divided into two categories of electroceramics and composite materials through the material, and the electroceramics cross arm insulator is clavate's porcelain spare, installs the supporting wire on the pole, has both played the effect of wire to ground insulation, plays the effect of cross arm again, when the voltage level is higher, requires highly to the mechanical strength of cross arm insulator.
At present, when the electric wire is supported by aiming at the composite cross arm insulator, the following defects generally exist: 1. the existing composite cross arm insulator cannot realize the function of clamping the electric wire during supporting, and the phenomenon of shaking of the electric wire is easy to occur, so that the stability of the support is reduced; 2. the existing composite cross arm insulator can not clamp electric wires with different sizes when being supported, so that the applicability of the composite cross arm insulator is reduced, the contact area with the electric wires can not be increased along with the increase of the sizes of the electric wires, the phenomenon that the clamping is unstable due to the fact that the contact area of the composite cross arm insulator and the electric wires is too small is easy to occur, and the stability of the support is reduced.
Disclosure of Invention
Technical problem to be solved
The composite cross arm insulator can solve the problems that when the existing composite cross arm insulator supports an electric wire, the function of clamping the electric wire cannot be realized, the electric wire is easy to shake, the stability of the support is reduced, meanwhile, the electric wires with different sizes cannot be clamped, the applicability of the composite cross arm insulator is reduced, the contact area with the electric wire cannot be increased along with the increase of the size of the electric wire, the phenomenon that the clamping is unstable due to the fact that the contact area of the composite cross arm insulator and the electric wire is too small is easy to occur, the stability of the support is reduced, and the like.
(II) technical scheme
In order to achieve the purpose, the invention adopts the following technical scheme that the composite cross arm insulator comprises an insulating ceramic part, a clamping device, a limiting device and a connecting device, wherein the clamping device is installed at the upper end of the insulating ceramic part in a threaded matching mode, the limiting device is symmetrically connected to the outer side of the clamping device in a left-right insertion mode, the lower end of the limiting device is installed on the insulating ceramic part, and the connecting device is symmetrically installed in the middle of the outer surface of the insulating ceramic part in the up-down mode.
The clamping device comprises a lower clamping frame, an upper clamping frame, a sliding plate, a clamping mechanism, a locking mechanism, a supporting spring, a rack, an adjusting mechanism and a positioning mechanism, wherein the lower clamping frame is arranged at the top end of an insulating porcelain piece in a threaded fit manner, the side wall of the lower clamping frame is connected with the upper clamping frame in a sliding fit manner, the upper clamping frame and the lower clamping frame are fixed through bolts, the sliding plate is arranged between the upper clamping frame and the lower clamping frame and is vertically and symmetrically distributed, the upper sliding plate is connected with the upper clamping frame in a sliding fit manner, the lower sliding plate is connected with the lower clamping frame in a sliding fit manner, the inner end of the sliding plate is bilaterally and symmetrically connected with the clamping mechanism in a sliding fit manner, the locking mechanism is arranged at the front side of the clamping mechanism and is connected with the sliding plate in a threaded fit manner, the supporting spring is bilateral, the lower end of the supporting spring is arranged on the upper clamping frame, the racks are arranged between the sliding plates in a central symmetry manner, an adjusting mechanism is arranged between the racks, the adjusting mechanism is arranged on the right side wall of the lower clamping frame, the adjusting mechanism is meshed with the racks, a positioning mechanism is arranged between the sliding plates, when the device works, firstly, the insulating porcelain piece is installed and fixed on the cross arm in a manual mode, then the electric wire is placed in the lower clamping frame in a manual mode, the upper clamping frame is connected with the lower clamping frame, fixed by bolts, finally, the adjusting mechanism is manually rotated, the adjusting mechanism drives the sliding plate to move through the rack, the clamping mechanism can move on the sliding plate, therefore, electric wires of different sizes are clamped and fixed, the clamping mechanism is clamped and limited by the locking mechanism, the positioning mechanism plays a positioning role when the upper clamping frame is connected with the lower clamping frame, and the phenomenon of deviation is avoided.
The clamping mechanism comprises a sliding frame, a connecting spring, a supporting rod, an arc-shaped plate, a rotating plate, a telescopic rod and a telescopic spring, wherein the sliding frame is connected with the sliding plate in a sliding fit mode, the connecting spring is connected between the sliding frame and the sliding plate, the supporting rod is arranged in the middle of the inner end of the sliding frame, the arc-shaped plate is arranged at the inner end of the supporting rod, a rubber pad is arranged on the inner surface of the arc-shaped plate, the rotating plate is symmetrically connected to the outer side of the arc-shaped plate in a left-right mode through a pin shaft, the rubber pad is arranged on the inner surface of the rotating plate, the telescopic rod is connected to the outer surface of the rotating plate through a pin shaft, the telescopic spring is arranged on the outer surface of the telescopic rod, when the clamping mechanism works, an electric wire is manually placed on the arc-, thereby increasing the contact area with the electric wire and improving the stability of clamping.
According to a preferred technical scheme, the limiting device comprises a limiting seat, a limiting plate and a limiting post, the limiting seat is installed on the insulating porcelain, the middle of the limiting seat is connected with the limiting plate through a pin shaft, the limiting posts are symmetrically installed on the front side and the rear side of the upper end of the limiting plate, and the limiting posts are in plug-in fit with the side wall of the lower clamping frame.
As a preferred technical scheme of the invention, the connecting device comprises a threaded connecting rod and a threaded sleeve, the threaded connecting rod is symmetrically arranged in the middle of the outer surface of the insulating porcelain piece in the left-right direction, the threaded connecting rod on the right side is connected with the threaded sleeve in a threaded matching manner, and when the connecting device works specifically and a plurality of insulating porcelain pieces are required to be used simultaneously, the threaded sleeve is matched with the threaded connecting rod, so that the connecting effect of the plurality of insulating porcelain pieces is realized, a supporting force is provided between the insulating porcelain pieces, and the phenomenon that the insulating porcelain pieces are inclined is avoided.
As a preferred technical scheme of the invention, the locking mechanism comprises a locking screw and a locking plate, the locking screw is connected with the front end of the sliding plate in a thread fit mode, the rear end of the locking screw is connected with the locking plate through a bearing, the locking plate is connected with the sliding plate in a sliding fit mode, an anti-slip pad is arranged at the inner end of the locking plate, when the locking mechanism works specifically, when the sliding frame is tightly attached to an electric wire, the locking screw is manually rotated, and the locking screw clamps and fixes the sliding frame through the locking plate, so that the phenomenon of unstable clamping caused by sliding of the sliding frame is avoided.
As a preferable technical scheme of the invention, the adjusting mechanism comprises a connecting frame, a rotating gear, a rotating rod, an adjusting cylinder and an adjusting screw rod, the connecting frame is arranged on the inner end face of the right side wall of the lower clamping frame, the inside of the connecting frame is connected with a rotating gear through a bearing, the rotating gear is meshed with a rack, the right end of the rotating gear is provided with a rotating rod, the rotating rod is rotatably connected with the connecting frame and is rotatably connected with the side wall of the lower clamping frame, the right side of the outer surface of the rotating rod is provided with a rectangular groove, the outer side of the rotating rod is provided with an adjusting cylinder, the adjusting cylinder is arranged on the right side wall of the lower clamping frame, the inside of the adjusting cylinder is connected with an adjusting screw rod in a threaded fit mode, the inside, the adjusting screw rod is manually rotated, and the adjusting screw rod drives the rack to feed through the rotating gear, so that the sliding frame is driven to gather and clamp the electric wire.
As a preferred technical solution of the present invention, the positioning mechanism includes an upper slide bar and a lower slide bar, the upper slide bar is mounted on the slide plate located above, and the lower slide bar is mounted on the slide plate located below.
As a preferable technical scheme of the invention, the adjusting screw rod is internally and uniformly provided with rectangular bulges which are in sliding fit with the rectangular grooves on the outer surface of the rotating rod, and when the adjusting screw rod works, the rectangular bulges in the adjusting screw rod are in sliding fit with the rectangular grooves on the outer surface of the rotating rod, so that the adjusting screw rod can drive the rotating rod to rotate, and the adjusting screw rod and the rotating rod can slide.
(III) advantageous effects
1. The composite cross arm insulator provided by the invention can support and clamp the electric wire at the same time, so that the support stability is effectively improved;
2. the composite cross arm insulator provided by the invention has the advantages that the adopted clamping device can clamp electric wires with different sizes, so that the applicability of the composite cross arm insulator provided by the invention is improved, in addition, the clamping part of the adopted clamping device can rotate within a certain range, the contact area with the electric wire can be increased along with the increase of the size of the electric wire, the phenomenon that the clamping is unstable due to the fact that the contact surface of the clamping device and the electric wire is too small is avoided, and the clamping stability is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 2 in accordance with the present invention;
FIG. 5 is an enlarged view of the invention taken in the direction of N in FIG. 3;
fig. 6 is an enlarged view of the invention in the direction X of fig. 3.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 6, a composite cross arm insulator comprises an insulating ceramic part 1, a clamping device 2, a limiting device 3 and a connecting device 4, wherein the clamping device 2 is installed at the upper end of the insulating ceramic part 1 in a threaded fit mode, the limiting device 3 is connected to the outer side of the clamping device 2 in a plug-in mode in a bilateral symmetry mode, the lower end of the limiting device 3 is installed on the insulating ceramic part 1, and the connecting device 4 is installed in the middle of the outer surface of the insulating ceramic part 1 in an up-and-down symmetry mode.
The clamping device 2 comprises a lower clamping frame 21, an upper clamping frame 22, a sliding plate 23, a clamping mechanism 24, a locking mechanism 25, a supporting spring 26, a rack 27, an adjusting mechanism 28 and a positioning mechanism 29, wherein the lower clamping frame 21 is arranged at the top end of the insulating porcelain 1 in a threaded fit manner, the side wall of the lower clamping frame 21 is connected with the upper clamping frame 22 in a sliding fit manner, the upper clamping frame 22 and the lower clamping frame 21 are fixed through bolts, the sliding plate 23 is arranged between the upper clamping frame 22 and the lower clamping frame 21, the sliding plates 23 are symmetrically distributed up and down, the upper sliding plate 23 is connected with the upper clamping frame 22 in a sliding fit manner, the lower sliding plate 23 is connected with the lower clamping frame 21 in a sliding fit manner, the inner end of the sliding plate 23 is symmetrically connected with the clamping mechanism 24 in a left-right slide manner, the locking mechanism 25 is arranged on the front side of the clamping mechanism 24, the locking mechanism 25 is connected with the sliding plate, when the device works, firstly, the insulating porcelain piece 1 is installed and fixed on the cross arm in a manual mode, then, the electric wire is placed in the lower clamping frame 21 in a manual mode, the upper clamping frame 22 is connected with the lower clamping frame 21 through bolts, finally, the adjusting mechanism 28 is rotated manually, the adjusting mechanism 28 drives the sliding plate 23 to move through the rack 27, the clamping mechanism 24 can move on the sliding plate 23, so that the electric wires with different sizes are clamped and fixed, the locking mechanism 25 clamps and limits the clamping mechanism 24, the positioning mechanism 29 plays a role in positioning when the upper clamping frame 22 is connected with the lower clamping frame 21, so that the phenomenon of deviation is avoided.
The clamping mechanism 24 comprises a sliding frame 241, a connecting spring 242, a supporting rod 243, an arc-shaped plate 244, a rotating plate 245, an expansion rod 246 and an expansion spring 247, the sliding frame 241 is connected with the sliding plate 23 in a sliding fit mode, the connecting spring 242 is connected between the sliding frame 241 and the sliding plate 23, the supporting rod 243 is installed in the middle of the inner end of the sliding frame 241, the arc-shaped plate 244 is installed at the inner end of the supporting rod 243, a rubber pad is arranged on the inner surface of the arc-shaped plate 244, the rotating plate 245 is symmetrically connected to the outer side of the arc-shaped plate 244 in a left-right mode through a pin shaft, the rubber pad is arranged on the inner surface of the rotating plate 245, the expansion rod 246 is connected to the outer surface of the rotating plate 245 through a pin shaft, the expansion spring 247 is installed on the outer surface of the expansion rod 246, when the size of the electric wire is increased, the rotating plate 245 can realize the function of clamping the electric wire with the increased size through the telescopic rod 246, so that the contact area of the electric wire is increased, and the stability of clamping is improved.
The locking mechanism 25 comprises a locking screw 251 and a locking plate 252, the locking screw 251 is connected with the front end of the sliding plate 23 in a thread fit mode, the rear end of the locking screw 251 is connected with the locking plate 252 through a bearing, the locking plate 252 is connected with the sliding plate 23 in a sliding fit mode, an anti-slip pad is arranged at the inner end of the locking plate 252, when the sliding frame 241 is tightly attached to an electric wire in specific work, the locking screw 251 is manually rotated, the locking screw 251 clamps and fixes the sliding frame 241 through the locking plate 252, and the phenomenon that clamping is unstable due to sliding of the sliding frame 241 is avoided.
The adjusting mechanism 28 comprises a connecting frame 281, a rotating gear 282, a rotating rod 283, an adjusting cylinder 284 and an adjusting screw 285, the connecting frame 281 is installed on the inner end face of the right side wall of the lower clamping frame 21, the inside of the connecting frame 281 is connected with the rotating gear 282 through a bearing, the rotating gear 282 is meshed with the rack 27, the right end of the rotating gear 282 is provided with the rotating rod 283, the rotating rod 283 is rotatably connected with the connecting frame 281, the rotating rod 283 is rotatably connected with the side wall of the lower clamping frame 21, the right side of the outer surface of the rotating rod 283 is provided with a rectangular groove, the outside of the rotating rod 283 is provided with the adjusting cylinder 284, the adjusting cylinder 284 is installed on the right side wall of the lower clamping frame 21, the inside of the adjusting cylinder 284 is connected with the adjusting screw 285 through a threaded fit mode, the inside of the adjusting screw 285 is slidably connected with the rotating rod 283, during, thereby driving the sliding frame 241 to gather and clamp the electric wires.
Adjusting screw 285 inside evenly be provided with the rectangle protruding, the rectangle is protruding and the rectangle recess sliding fit on the dwang 283 surface, specific during operation, the inside rectangle of adjusting screw 285 is protruding and the rectangle recess sliding fit on the dwang 283 surface, can realize that adjusting screw 285 drives the dwang 283 and rotates to, can gliding function between the two.
The positioning mechanism 29 comprises an upper sliding rod 291 and a lower sliding rod 292, the upper sliding rod 291 is mounted on the sliding plate 23 located above, the lower sliding rod 292 is mounted on the sliding plate 23 located below, and during specific work, the upper sliding rod 291 is matched with the lower sliding rod 292 to perform a positioning function when the upper clamping frame 22 is connected with the lower clamping frame 21.
Stop device 3 include spacing seat 31, limiting plate 32 and spacing post 33, spacing seat 31 install on porcelain insulator 1, there is limiting plate 32 at spacing seat 31 middle part through the round pin hub connection, spacing post 33 is installed to spacing 32 inner upside front and back symmetry, spacing post 33 and 21 lateral walls of lower clamping frame are pegged graft and are cooperated, concrete during operation, when clamping frame 21 installs in 1 upper end of porcelain insulator, manual carry out the dwang with limiting plate 32, and insert spacing post 33 in 21 lateral walls of lower clamping frame, thereby realize carrying out spacing support's function to clamping frame 21 down, avoid the lower clamping frame pivoted phenomenon to appear.
Connecting device 4 include threaded connecting rod 41 and thread bush 42, 1 surface middle part bilateral symmetry of insulating porcelain spare install threaded connecting rod 41, right side threaded connecting rod 41 is connected with thread bush 42 through screw-thread fit, concrete during operation, when needing a plurality of insulating porcelain spare 1 to use simultaneously, thread bush 42 and the cooperation of threaded connecting rod 41 realize the effect that a plurality of insulating porcelain spare 1 are connected to provide the holding power between insulating porcelain spare 1, avoid insulating porcelain spare 1 the phenomenon of slope to appear.
When in use: s1: the insulating porcelain piece 1 is installed and fixed on the cross arm in a manual or mechanical auxiliary mode;
s2: the electric wire is placed in the lower clamping frame 21 in a manual or mechanical auxiliary mode, the upper clamping frame 22 is connected with the lower clamping frame 21, then the upper clamping frame 22 is connected and fixed with the lower clamping frame 21 through bolts, and finally the limiting column 33 is manually inserted into the side wall of the lower clamping frame 21;
s3: the adjusting mechanism 28 is manually rotated, the adjusting mechanism 28 drives the sliding plate 23 to move through the rack 27, the sliding plate 23 clamps and fixes the electric wire through the clamping mechanism 24, and then the locking screw 251 is manually rotated, and the locking screw 251 locks the sliding frame 241 through the locking plate 252.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.