WO2018006713A1 - Insulation pull bar - Google Patents
Insulation pull bar Download PDFInfo
- Publication number
- WO2018006713A1 WO2018006713A1 PCT/CN2017/089674 CN2017089674W WO2018006713A1 WO 2018006713 A1 WO2018006713 A1 WO 2018006713A1 CN 2017089674 W CN2017089674 W CN 2017089674W WO 2018006713 A1 WO2018006713 A1 WO 2018006713A1
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- WO
- WIPO (PCT)
- Prior art keywords
- wedge
- insulating tube
- insulating
- shaped
- insertion end
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/056—Tools for actuating a switch
Definitions
- the invention relates to a power transmission insulation device, in particular to an insulation rod.
- Insulated tie rods are important components of circuit breakers. They have high requirements on electrical and mechanical properties. The quality of insulation rods directly affects the reliability of circuit breakers and the safe operation of the power grid.
- the insulating tie rod generally comprises an insulating tube and a joint glued on both ends of the insulating tube, and an adhesive is adhered between the inner wall surface of the insulating tube and the outer surface of the joint to form an insulating tie rod.
- Conventional insulating rods generally have a certain roughness on the inner wall of the insulating tube and the outer wall of the joint or a threaded fit to improve the bonding strength.
- the tensile force acting on the joint will be transmitted to the insulating tube, causing the bonding and fixing structure between the inner wall surface of the insulating tube and the outer surface of the joint to be concentrated.
- the force exceeds a certain limit the bonded solid structure will be Destruction, but the tensile structure can withstand limited tension, the thread structure is easy to wear due to tensile force, the connection strength is low, the joint and the insulation tube are easy to fall off, causing serious power failure, even endangering personal safety and improving operation and maintenance. cost.
- the object of the present invention is to provide an insulating tie rod which is convenient to manufacture, has high tensile strength, and is safe and reliable.
- an insulating tie rod comprising an insulating tube and a joint coupled to both ends of the insulating tube, the joint comprising an insertion end axially mated with the insulating tube and An exposed end extending from the insertion end, a wedge-shaped adhesive cavity is disposed between the insertion end and the insulating tube, and the wedge-shaped adhesive cavity is filled with glue.
- the wedge-shaped rubber-filling cavity is arranged between the insertion end and the insulating tube, the wedge-shaped rubber-filling structure enables the insulating rod to disperse the force-receiving surface when subjected to the tensile force, thereby effectively improving the stress of the glued joint and improving the force.
- Tensile strength safe and reliable.
- the insulating tube has a straight cylindrical shape, and the insertion end is inserted into the insulating tube, and the wedge-shaped adhesive cavity is disposed between the outer wall of the insertion end and the inner wall of the insulating tube.
- the insertion end is provided with a receiving cavity
- the insulating tube is inserted into the receiving cavity
- the wedge-shaped adhesive cavity is disposed between the inner wall of the receiving cavity and the outer wall of the insulating tube.
- At least two through holes communicating with the wedge-shaped cavity are disposed on the insulating rod.
- the insertion end or the insulating tube is provided with at least one wedge-shaped recess to form the wedge-shaped plastic cavity, and the bottom surface and the outer end surface of the wedge-shaped groove are wedge-shaped.
- the wedge-shaped adhesive cavity can be conveniently formed, and the stepped rib formed between the bottom surface of the wedge-shaped groove and the end surface thereof and the wall surface of the insertion end or the insulating tube can bear the tensile force, can disperse the force surface, and effectively improve the binding
- the force of the joint is increased, and the tensile strength is improved, which is safe and reliable.
- the wedge-shaped recess is circumferentially disposed circumferentially along the axial direction of the insulating tube. This facilitates the processing of the wedge-shaped grooves and forms a continuous adhesive space, and avoids stress concentration caused by sudden changes in size, and avoids affecting the overall strength of the insulating tie rod.
- the wedge grooves are at least two and disposed adjacent to each other along the axial direction of the insulating tube, and a cylindrical portion is disposed between two adjacent wedge grooves.
- Such a plurality of wedge-shaped grooves respectively form relatively independent plastic cavities, and the small volume is easy to achieve uniform injection, thereby ensuring a good glue loading effect.
- the diameter of the wedge-shaped groove away from the exposed end is smaller than the diameter of the exposed end. This facilitates the mating operation of the joint and the insulating tube, and the tensile performance is better due to the overall stress of the bonded structure when subjected to tension.
- the diameter of the cylindrical section is adapted to the diameter of the insulating tube, and the cylindrical section is provided with at least one flow tank communicating with two adjacent wedge-shaped recesses.
- the cylindrical section can serve as a reference to ensure the coaxiality of the mating, and can support the insulating tube or the tube wall of the receiving cavity to improve the strength of the mating portion.
- the flow glue tank can make the glue liquid conveniently fill the wedge-shaped plastic cavity of the plurality of wedge-shaped grooves, and avoid the contact between the cylindrical section and the inner wall of the insulating tube is too tight, which affects the sufficient injection of the glue.
- a portion of the insertion end away from the exposed end is a head, a first sealing groove is disposed between the head and the insulating tube, and a first sealing ring is disposed in the first sealing groove.
- the wedge-shaped plastic cavity and the insulating pipe wall can be sealed, and the leakage of the glue liquid is prevented, thereby causing insufficient injection of the glue in the wedge-shaped cavity, thereby avoiding the influence of the bonding effect and avoiding the waste of the glue.
- the portion of the insertion end adjacent to the exposed end is a tail portion, a second sealing groove is disposed between the tail portion and the insulating tube, and a second sealing ring is disposed in the second sealing groove.
- the exposed end is provided with a stop at a position in contact with the end of the insulating tube, and the retaining edge abuts against the end surface of the insulating tube.
- the retaining edge can be easily assembled and positioned by forming an abutting contact with the end of the insulating tube.
- the joint is provided with an exhaust hole penetrating in the axial direction of the insulating tube. This makes it easy to fill the inside of the insulating tube with insulating gas to ensure insulation performance.
- the insulating tube or the end of the insertion end is provided with a first tapered surface for easy fitting.
- the insulating tube has an inner diameter equal to the insertion end insertion portion. This makes it easy to insert the insertion end into the insulating tube.
- the inner diameter of the insertion portion of the insulating tube in the receiving chamber is equal. This makes it easy to insert the insulating tube into the receiving chamber.
- a blocking member is disposed in the through hole. This can prevent moisture from penetrating into the wedge-shaped cavity by the through hole, which causes the cured glue to age and weaken the bond strength.
- At least one glue groove is disposed in the wedge-shaped cavity.
- the solid glue tank can be arranged to store more glue in the wedge-shaped rubber cavity, the bonding effect is better, and the connection between the joint and the insulating tube is stronger.
- the through holes are provided on the same bus bar of the insulating tube. This makes it easy to see if the glue fills the wedge-shaped cavity.
- At least one of the through holes is a threaded hole. This can increase the strength of the connection between the blocking member and the through hole, so that the sealing is reliable.
- FIG. 1 is a partial cross-sectional view of an insulating tie rod 100 according to a first embodiment of the present invention
- FIG. 2 is a partial enlarged cross-sectional view showing the connection of the joint 102 and the insulating tube 101 on the insulating tie rod 100 according to the first embodiment of the present invention
- Figure 3 is a schematic view of a joint 102 in accordance with a first embodiment of the present invention.
- Figure 4 is a partially enlarged cross-sectional view showing an insulating tube 101 according to Embodiment 1 of the present invention.
- Figure 5 is a view showing a portion of the insulating tie rod upper joint 202 connected to the insulating tube 201 according to the second embodiment of the present invention. Enlarged sectional view;
- Figure 6 is a partially enlarged cross-sectional view showing the connection of the insulating tie rod upper joint 302 and the insulating tube 301 according to the third embodiment of the present invention
- Figure 7 is a partially enlarged cross-sectional view showing the connection of the insulating tie rod upper joint 402 and the insulating tube 401 according to the fourth embodiment of the present invention.
- Figure 8 is a partially enlarged cross-sectional view showing the connection of the insulating tie rod upper joint 502 and the insulating tube 501 according to the fifth embodiment of the present invention.
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- the insulating tie rod 100 of the present embodiment includes an insulating tube 101 in a straight cylindrical shape and a joint 102 coupled to both ends of the insulating tube 101.
- the joint 102 includes an insulating tube 101 inserted axially along the insulating tube 101.
- the insertion end 110 and the exposed end 120 extending from the insertion end 110.
- a wedge-shaped adhesive cavity 130 is disposed between the outer wall of the insertion end 110 and the insulating tube 101.
- the wedge-shaped adhesive cavity 130 is filled with a glue 131.
- the insulating tube 101 is provided with two wedge-shaped adhesive cavities 130 on the wall corresponding to the insertion end 110. Through holes 103 that communicate with each other.
- the insulating tube 101 is an epoxy resin impregnated glass fiber wound insulating tube or other composite insulating tube
- the joint 102 is made of a metal material such as aluminum alloy or stainless steel.
- the insertion end 110 has a cylindrical shape as a whole, and its outer diameter is adapted to the inner diameter of the insulating tube 101.
- Two insertion grooves 111 axially adjacent to the insulating tube 101 are disposed on the insertion end 110, and the diameter of the portion of the wedge groove 111 away from the exposed end 120 is smaller than the diameter of the portion near the exposed end 120.
- the bottom surface 1111 of the wedge-shaped groove 111 has a wedge shape with the outer end surface.
- the outer end surface of the wedge-shaped groove 111 that is, the cylindrical surface of the wedge-shaped groove 111 having the largest diameter, that is, the cylinder in FIG.
- the bottom surface 1111 of the wedge groove 111 is a conical surface, and may of course be a pyramid surface.
- a space formed between the wedge-shaped recess 111 and the inner wall of the insulating tube 101 is a wedge-shaped adhesive cavity 130.
- a stepped rib 114 is formed between the small-diameter end of the wedge-shaped recess 111 and the outer wall of the insertion end 110.
- the surface effectively improves the stress on the joint of the plastic part, improves the tensile strength, and improves the safety performance.
- the invention is not limited thereto, and the diameter of the portion of the wedge groove 111 away from the exposed end 120 may also be larger than the diameter of the portion near the exposed end 120.
- the wedge-shaped recess 111 is circumferentially circumferentially disposed on the outer wall of the insertion end 110 in the axial direction of the insulating tube 101, and has a continuous annular shape, so that a continuous adhesive space can be formed.
- the present invention is not limited thereto, and a plurality of wedge-shaped grooves 111 may be spaced apart on the outer wall of the insertion end 110 as long as the glue 131 can be accommodated.
- the two through holes 103 are optical holes, and the two through holes 103 are respectively disposed on the insulating tube 101 corresponding to the ends of the insertion end 110, and are respectively formed with two wedge-shaped concaves.
- the slots 111 correspond to each other, and the two through holes 103 are disposed on the same bus bar of the insulating tube 101.
- the glue 131 is injected from one of the through holes 103 into the wedge-shaped cavities 130, and the air is discharged from the other through holes 103.
- the two through holes 103 are disposed on the same bus bar of the insulating tube 101, the operator can conveniently and intuitively observe whether the glue 131 overflows in the other through hole 103 while injecting the glue 131, and ensure the glue.
- the liquid 131 is sufficiently injected and the bonding is reliable.
- the present invention is not limited thereto, and the number of the through holes 103 may be one or three or more as long as the smooth and sufficient injection of the glue 131 can be ensured.
- the plurality of through holes 103 may also be disposed at any position on the wall of the insulating tube 101 as long as it can communicate with the wedge shaped cavities 130.
- a cylindrical section 112 is provided between the adjacent two wedge-shaped recesses 111 to accommodate the inner diameter of the insulating tube 101.
- the small-diameter end of the wedge-shaped recess 111 near the exposed end 120 side also forms a stepped rib 114 with the end of the cylindrical section 112.
- the stepped rib 114 can also withstand partial tension, enhance tensile strength, and improve safety.
- the cylindrical section 112 is provided with a flow tank 113 that communicates with the adjacent two wedge-shaped recesses 111.
- the flow tank 113 is a rectangular groove disposed on the outer wall of the cylindrical section 112 along the axial direction of the insulating tube 101.
- the two ends of the flow tank 113 communicate with the adjacent two wedge-shaped recesses 111, and the flow tank
- the portion of the 113 end which is connected to the wedge groove 111 is curved, so that the glue 131 can be injected during the injection.
- one of the wedge-shaped grooves 111 flows through the cylindrical section 112 and flows into the other wedge-shaped recess 111, so that the molten liquid 131 can be sufficiently filled into the wedge-shaped adhesive cavity 130 to ensure the bonding strength.
- a multi-channel glue tank 113 may also be provided, and the cross-section of the glue tank 113 may also be triangular, semi-circular or the like.
- the present invention is not limited thereto, and the diameter of the cylindrical section 112 can also be smaller than the inner diameter of the insulating tube 101, so that it is not necessary to provide the glue flow tank 113, and the glue cavity 131 can be fully filled into the wedge-shaped adhesive cavity 130 to be glued. .
- the portion of the insertion end 110 away from the exposed end 120 is a head 115.
- the outer wall of the head 115 is provided with a first sealing groove 116, and the first sealing groove 116 is provided with a first sealing ring 132.
- the portion of the insertion end 110 near the exposed end 120 is a tail portion 117.
- the outer wall of the tail portion 117 is provided with a second sealing groove 118, and the second sealing groove 118 is provided with a second sealing ring 133.
- the first sealing groove 116 and the first sealing ring 132 can seal the wedge-shaped adhesive cavity 130 and the inner wall of the insulating tube 101 to prevent the glue 131 from leaking into the insulating tube 101, thereby causing insufficient injection of the glue 131 in the wedge-shaped adhesive cavity 130. So as to avoid affecting the bonding effect and avoid wasting glue.
- the second sealing groove 118 and the second sealing ring 133 can seal between the wedge-shaped adhesive cavity 130 and the outside, preventing the glue 131 from leaking from the bottom of the insertion end 110 to the exposed end 120, thereby avoiding waste of the glue 131 and ensuring The surface of the insulating rod 100 is clean.
- the first sealing groove 116 and the second sealing groove 118 are both rectangular in cross section along the axial direction of the insulating tube 101, and the first sealing ring 132 and the second sealing ring 133 are rectangular sealing rings. It is made of any material such as EPDM, nitrile rubber, fluororubber or fluorosilicone rubber.
- the present invention is not limited thereto, and the cross section of the first sealing groove 116 and the second sealing groove 118 along the axial direction of the insulating tube 101 may be trapezoidal, triangular or the like; the first sealing ring 132 and the second sealing ring 133 may also be O-ring seals, trapezoidal seals, special-shaped seals, etc. are used.
- a plurality of first sealing grooves 116 and second sealing grooves 118 may be provided, and a plurality of first sealing rings 132 and second sealing rings 133 are correspondingly matched to ensure a sealing effect.
- the outer diameter of the exposed end 120 is smaller than the outer diameter of the insulating tube 101 but larger than the inner diameter of the insulating tube 101, and the exposed end 120 is connected to the insertion end 110 to form a blocking edge 121, which is inserted at the insertion end 110.
- the retaining edge 121 abuts against the end surface of the insulating tube 101 to form an abutting contact, so that the assembly positioning can be conveniently performed.
- the present invention is not limited thereto, and the outer diameter of the exposed end 120 may also be smaller than the inner diameter of the insulating tube 101, and an annular protrusion may be provided as a blocking edge 121 at a position where the exposed end 120 is in contact with the end of the insulating tube 101. Or other ways to form abutment Contact for assembly positioning.
- a vent hole 119 penetrating in the axial direction of the insulating tube 101 is disposed on the joint 102.
- the vent hole 119 is provided to conveniently fill the inside of the insulating tube 101 with an insulating gas to ensure insulation performance.
- the exhaust hole 119 has a circular cross section and is disposed concentrically with the insulating tube 101.
- the cross section of the vent hole 119 may be other shapes such as a square, a triangle, a polygon, a profile, or the like, or may not be disposed concentrically with the insulating tube 101 as long as it can be realized to the inside of the insulating tube 101. Fill with insulating gas.
- the inner wall of the end portion of the insulating tube 101 is provided with a first tapered surface 104 for facilitating the insertion of the insertion end 110.
- the first tapered surface 104 is a conical surface, and may of course be a pyramidal surface.
- the diameter of the portion of the first tapered surface 104 away from the exposed end 120 is smaller than the diameter of the portion near the exposed end 120.
- the diameter of the portion of the first tapered surface 104 near the exposed end 120 is slightly larger than the outer diameter of the insertion end 110, and the first tapered surface 104 is along the insulating tube.
- the axial length of 101 is subject to the ease of insertion.
- the insulating tube 101 has an inner diameter equal to the inner wall 105 of the insertion portion of the insertion end 110.
- the insulating tube 101 is formed by winding epoxy resin-impregnated glass fibers on a core mold and solidifying.
- the core mold generally has a certain taper, and thus the inner wall of the manufactured insulating tube 101 is a cone. Since the insertion end 110 has a cylindrical shape as a whole and its outer diameter is adapted to the inner diameter of the insulating tube, if it is directly inserted into the insulating tube 101, the inner wall of the insulating tube 101 is worn, which affects the overall strength of the insulating tube 101.
- the inner diameter of the inner wall 105 is made equal by turning or grinding, that is, the inner wall 105 is partially cylindrical, so that the insertion end 110 can be smoothly inserted into the insulating tube 101, and the overall strength of the insulating tube 101 can be ensured.
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- the second embodiment of the present invention is substantially the same as the first embodiment. Unlike the first embodiment, only one wedge-shaped recess 211 is provided on the insertion end 210. Two through holes 203 are respectively disposed on the two bus bars opposite to each other in the radial direction of the insulating tube 201.
- the vent hole 219 is not provided on the joint 202, but is disposed on the outer wall of the insulating tube 201 to communicate with the outside and the inner wall of the insulating tube 201.
- the present invention is not limited thereto, and the wedge-shaped recess 211 may not be disposed on the insertion end 210, but the wedge-shaped adhesive cavity 230 may be directly formed between the outer wall of the insertion end 210 and the inner wall of the insulating tube 201, or may be in the insulating tube.
- a wedge groove 211 is provided in the inner wall of 201 as long as the joint 202 can be bonded to the insulating tube 201. Obviously, three or more wedges can also be placed on the insertion end 210. Shaped groove 211.
- the through hole 203 is a threaded hole, and a blocking member (not shown) is further disposed in the through hole 203.
- the sealing member may be a screw or a rubber stopper or the like, and a screw or a rubber plug or the like is screwed into the through hole 203, and the glue is filled with a gap between the sealing member and the through hole 203. In this way, it is possible to prevent moisture from penetrating into the wedge-shaped adhesive cavity 230 through the through hole 203, thereby causing the cured rubber to age and weaken the bonding strength.
- the first sealing groove 216 is disposed on the inner wall of the insulating tube 201 corresponding to the head portion 215, and the first sealing ring 232 is disposed in the first sealing groove 216. of course.
- the second sealing groove may also be disposed on the inner wall of the insulating tube 201, and details are not described herein.
- an annular glue groove 234 is further disposed in the wedge-shaped cavity 302. In this way, more glue can be stored in the wedge-shaped adhesive cavity 230, the bonding effect is better, and the connection between the joint 202 and the insulating tube 201 is stronger.
- the cross section of the solid groove 234 in the axial direction of the insulating tube 201 is a rectangle, and it is obvious that other shapes such as a trapezoid or a triangle may be used.
- four solid glue grooves 234 are disposed on the inner wall of the insertion end 210, and four solid glue grooves 234 are disposed on the outer wall of the insulating tube 201 at corresponding positions in the wedge-shaped plastic cavity 230.
- one or more glue grooves 234 may be disposed only on the outer wall of the insertion end 210 or only on the inner wall of the insulating tube 201 at a corresponding position in the wedge-shaped plastic chamber 230.
- the glue groove 234 may be disposed in a spiral shape or the like along the axial direction of the insulating tube 201.
- Embodiment 3 is a diagrammatic representation of Embodiment 3
- the third embodiment of the present invention is substantially the same as the first embodiment.
- two wedges are disposed on the inner wall of the insulating tube 301 and the outer wall of the insertion end 310 in this embodiment.
- Groove 311 The wedge-shaped recess 311 on the inner wall of the insulating tube 301 is disposed corresponding to the wedge-shaped recess 311 on the outer wall of the insertion end 310, and the space formed correspondingly is the wedge-shaped adhesive cavity 330.
- the present invention is not limited thereto, and the wedge-shaped recess 311 on the inner wall of the insulating tube 301 and the wedge-shaped recess 311 on the outer wall of the insertion end 110 may also be disposed, and correspondingly, the inner wall of the insulating tube 301
- the space formed by the wedge-shaped recess 311 and the outer wall of the insertion end 110 is a wedge-shaped adhesive cavity 330.
- the space formed by the wedge-shaped recess 311 on the outer wall of the insertion end 110 and the inner wall of the insulating tube 301 is also a wedge-shaped adhesive cavity 330.
- Embodiment 4 is a diagrammatic representation of Embodiment 4:
- the fourth embodiment of the present invention is substantially the same as the first embodiment.
- the first embodiment is different from the first embodiment.
- the insertion end 410 is provided with a receiving cavity 440, and the insulating tube 401 is inserted into the receiving cavity 440.
- a wedge-shaped adhesive cavity 430 is disposed between the inner wall of the receiving cavity 440 and the outer wall of the insulating tube 401.
- the receiving cavity 440 is a circular blind hole whose inner diameter is adapted to the outer diameter of the insulating tube 401.
- Two annular wedge-shaped recesses 411 are formed in the inner wall of the receiving cavity 440.
- the space formed between the wedge-shaped recess 411 and the outer wall of the insulating tube 401 is a wedge-shaped adhesive cavity 430.
- a first sealing groove 416 is disposed on the inner wall of the head 415, and a first sealing ring 432 is disposed in the first sealing groove 416.
- a second sealing groove 418 is disposed on the inner wall of the tail portion 417, and a second sealing ring 433 is disposed in the second sealing groove 418.
- the through hole 403 is disposed on the outer wall of the insertion end 410 and communicates with the wedge shaped cavity 430 to facilitate the injection of the glue 431.
- the present invention is not limited thereto, and the through hole 403 may not be provided, but the glue 431 is applied to the outer wall of the insulating tube 401, and the insulating tube 401 is inserted into the receiving cavity 440 for binding.
- a first tapered surface 404 is disposed on the outer wall of the end of the insulating tube 401 to facilitate insertion of the insulating tube 401 into the receiving cavity 440.
- the inner diameter of the receiving cavity 440 is equal to facilitate the smooth insertion of the insulating tube 401.
- the inner wall end of the receiving cavity 440 naturally forms a blocking edge 421 to form an abutting contact for the assembly position after the insulating tube 401 is inserted.
- the present invention is not limited thereto, and the wedge-shaped recess 411 may be disposed on the outer wall of the insulating tube 401 or at the same time, a plurality of wedge-shaped recesses 411 are formed on the inner wall of the receiving cavity 440 and the outer wall of the insulating tube 401 to form the wedge-shaped adhesive cavity 430. .
- Embodiment 5 is a diagrammatic representation of Embodiment 5:
- the fifth embodiment of the present invention is substantially the same as the first embodiment.
- the insertion end 510 includes an inner insertion end 550 inserted into the inside of the insulating tube 501 and is insulated.
- the outer insertion end 560 and the inner insertion end 550 are provided separately.
- the outer insertion end 560 is a circular sleeve, and the tail portion 517 is opposite to the exposed end 520.
- Internal threads (not shown) are provided on the inner wall of the contact, and external threads (not shown) are provided at corresponding positions on the exposed end 520.
- the outer insertion end 560 is threadedly coupled to the exposed end 520.
- Two annular wedge-shaped recesses 511 are defined in the inner wall of the outer insertion end 560.
- the space formed between the wedge-shaped recess 511 and the outer wall of the insulating tube 501 is a wedge-shaped adhesive cavity 530.
- Two annular wedge-shaped recesses 511 are disposed on the outer wall of the inner insertion end 550.
- the space formed between the wedge-shaped recess 511 and the inner wall of the insulating tube 501 is also a wedge-shaped adhesive cavity 530.
- a first sealing groove 516 is also disposed on the inner wall of the upper portion 515 of the outer insertion end 560, and a first sealing ring 532 is disposed in the first sealing groove 516.
- a second sealing groove 518 is also disposed on the inner wall of the tail portion 517 of the outer insertion end 560, and a second sealing ring 533 is disposed in the second sealing groove 518.
- a first tapered surface 504 is also provided on the outer wall of the end of the insulating tube 501 and the inner wall of the end of the outer insertion end 560 to facilitate insertion of the insulating tube 501 into the receiving cavity 540.
- the through hole 503 is disposed on the outer wall of the outer insertion end 560 and communicates with the wedge-shaped adhesive cavity 530 between the outer insertion end 560 and the outer wall of the insulating tube 501 to facilitate the injection of the glue.
- the insulating tube 501 can be inserted into the receiving cavity 540 after the glue is applied to the inner insertion end 550, and then the outer insertion end 560 is connected to the exposed end 520 by threads, and is glued through the through hole 503.
- the present invention is not limited thereto, and the outer insertion end 560 and the inner insertion end 550 may also be connected by means of gluing, riveting, interference fit, and the like. Alternatively, the outer insertion end 560 and the inner insertion end 550 may be integrally provided as long as they are convenient to manufacture and assemble.
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Abstract
An insulation pull bar (100) comprises an insulation pipe (101) and joints (102) fitted to the two ends of the insulation pipe (101). Each joint (102) comprises an insertion end (110) in axial fitting connection with the insulation pipe (101) and an exposing end (120) extending out from the insertion end (110). A wedge-shaped glue receiving cavity (130) is arranged between the insertion end (110) and the insulation pipe (101). A glue liquid (131) is filled into the wedge-shaped glue receiving cavity (130). According to the insulation pull bar (100), the wedge-shaped glue receiving cavity (130) is arranged between the insertion end (110) and the insulation pipe (101), the wedge-shaped glue receiving cavity structure of the insulation pull bar (100) enables the insulation pull bar (100) to spread a stress surface when being pulled, which effectively improves the stress condition of a glued connection part, and increases the tensile strength, so that safety and reliability are achieved.
Description
本发明涉及一种输电绝缘设备,具体是一种绝缘拉杆。The invention relates to a power transmission insulation device, in particular to an insulation rod.
绝缘拉杆是断路器的重要部件,对其电气性能和机械性能有很高的要求,绝缘拉杆质量的好坏直接影响到断路器的可靠性和电网的安全运行。绝缘拉杆一般包括绝缘管和胶接在绝缘管两端的接头,绝缘管内壁面与接头外表面之间填充有粘结剂进行粘接,从而构成绝缘拉杆。Insulated tie rods are important components of circuit breakers. They have high requirements on electrical and mechanical properties. The quality of insulation rods directly affects the reliability of circuit breakers and the safe operation of the power grid. The insulating tie rod generally comprises an insulating tube and a joint glued on both ends of the insulating tube, and an adhesive is adhered between the inner wall surface of the insulating tube and the outer surface of the joint to form an insulating tie rod.
传统绝缘拉杆一般在绝缘管的内壁和接头外壁设置一定的粗糙度或者采用螺纹配合以提高粘接强度。在使用时,作用到接头上的拉力将传递到绝缘管上,造成绝缘管内壁面与接头外表面之间的粘接固连结构集中受力,作用力超过一定限度时粘接固连结构将被破坏,而胶接结构能够承受的拉力有限,螺纹结构受拉力易磨损,连接强度均较低,易发生接头与绝缘管脱落的现象,造成严重的停电事故,甚至危及人身安全,提高了运行维护成本。Conventional insulating rods generally have a certain roughness on the inner wall of the insulating tube and the outer wall of the joint or a threaded fit to improve the bonding strength. When in use, the tensile force acting on the joint will be transmitted to the insulating tube, causing the bonding and fixing structure between the inner wall surface of the insulating tube and the outer surface of the joint to be concentrated. When the force exceeds a certain limit, the bonded solid structure will be Destruction, but the tensile structure can withstand limited tension, the thread structure is easy to wear due to tensile force, the connection strength is low, the joint and the insulation tube are easy to fall off, causing serious power failure, even endangering personal safety and improving operation and maintenance. cost.
发明内容Summary of the invention
针对现有技术的不足,本发明的目的是提供一种绝缘拉杆,该绝缘拉杆制造方便,拉伸强度高,安全可靠。In view of the deficiencies of the prior art, the object of the present invention is to provide an insulating tie rod which is convenient to manufacture, has high tensile strength, and is safe and reliable.
为实现上述发明目的,本发明所采用的技术手段如下:一种绝缘拉杆,包括绝缘管和配接在该绝缘管两端的接头,该接头包括与上述绝缘管轴向配接的插入端以及自该插入端延伸而出的外露端,上述插入端与上述绝缘管之间设置楔形容胶腔,该楔形容胶腔中填充胶液。In order to achieve the above object, the technical means adopted by the present invention are as follows: an insulating tie rod comprising an insulating tube and a joint coupled to both ends of the insulating tube, the joint comprising an insertion end axially mated with the insulating tube and An exposed end extending from the insertion end, a wedge-shaped adhesive cavity is disposed between the insertion end and the insulating tube, and the wedge-shaped adhesive cavity is filled with glue.
上述绝缘拉杆,由于在插入端和绝缘管之间设置楔形容胶腔,其楔形的容胶结构使得绝缘拉杆在受到拉力时能够分散受力面,有效改善胶装连接部位的受力情况,提高拉伸强度,安全可靠。In the above-mentioned insulating rod, since the wedge-shaped rubber-filling cavity is arranged between the insertion end and the insulating tube, the wedge-shaped rubber-filling structure enables the insulating rod to disperse the force-receiving surface when subjected to the tensile force, thereby effectively improving the stress of the glued joint and improving the force. Tensile strength, safe and reliable.
优选地,上述绝缘管呈直筒状,上述插入端插入上述绝缘管中,上述插入端外壁与上述绝缘管内壁之间设置上述楔形容胶腔。Preferably, the insulating tube has a straight cylindrical shape, and the insertion end is inserted into the insulating tube, and the wedge-shaped adhesive cavity is disposed between the outer wall of the insertion end and the inner wall of the insulating tube.
优选地,上述插入端上设置收容腔,上述绝缘管插入上述收容腔中,上述收容腔内壁与上述绝缘管外壁之间设置上述楔形容胶腔。
Preferably, the insertion end is provided with a receiving cavity, the insulating tube is inserted into the receiving cavity, and the wedge-shaped adhesive cavity is disposed between the inner wall of the receiving cavity and the outer wall of the insulating tube.
优选地,上述绝缘拉杆上设置至少两个与上述楔形容胶腔相连通的通孔。这样可以在胶装时方便地从其中一个通孔向楔形容胶腔中注入胶液,从其他通孔中排出空气,操作方便且注胶充分,保证胶装强度。Preferably, at least two through holes communicating with the wedge-shaped cavity are disposed on the insulating rod. In this way, it is convenient to inject glue from one of the through holes into the wedge-shaped adhesive cavity during the plastic binding, and discharge the air from the other through holes, which is convenient to operate and sufficient to ensure the strength of the adhesive.
优选地,上述插入端或上述绝缘管上设置至少一个楔形凹槽形成上述楔形容胶腔,上述楔形凹槽的底面与外端面呈楔形。这样可以方便地形成楔形容胶腔,并且楔形凹槽的底面及其端面与插入端或者绝缘管的壁面之间所形成的台阶挡边均可以承受拉力,能够分散受力面,有效改善胶装连接部位的受力情况,提高拉伸强度,安全可靠。Preferably, the insertion end or the insulating tube is provided with at least one wedge-shaped recess to form the wedge-shaped plastic cavity, and the bottom surface and the outer end surface of the wedge-shaped groove are wedge-shaped. In this way, the wedge-shaped adhesive cavity can be conveniently formed, and the stepped rib formed between the bottom surface of the wedge-shaped groove and the end surface thereof and the wall surface of the insertion end or the insulating tube can bear the tensile force, can disperse the force surface, and effectively improve the binding The force of the joint is increased, and the tensile strength is improved, which is safe and reliable.
优选地,上述楔形凹槽沿上述绝缘管轴向周向环绕设置。这样便于楔形凹槽的加工并形成连续的容胶空间,且避免尺寸突变产生应力集中,避免影响绝缘拉杆的整体强度。Preferably, the wedge-shaped recess is circumferentially disposed circumferentially along the axial direction of the insulating tube. This facilitates the processing of the wedge-shaped grooves and forms a continuous adhesive space, and avoids stress concentration caused by sudden changes in size, and avoids affecting the overall strength of the insulating tie rod.
优选地,上述楔形凹槽至少为两个并沿上述绝缘管轴向相邻设置,相邻的两个上述楔形凹槽之间设置圆柱段。这样多个楔形凹槽分别形成相对独立的容胶腔,体积小容易实现均匀注胶,保证良好的胶装效果。Preferably, the wedge grooves are at least two and disposed adjacent to each other along the axial direction of the insulating tube, and a cylindrical portion is disposed between two adjacent wedge grooves. Such a plurality of wedge-shaped grooves respectively form relatively independent plastic cavities, and the small volume is easy to achieve uniform injection, thereby ensuring a good glue loading effect.
优选地,上述楔形凹槽远离上述外露端的直径小于靠近上述外露端的直径。这样便于接头与绝缘管的配接操作,并且在受到拉力时由于胶装结构整体受力,其抗拉性能更好。Preferably, the diameter of the wedge-shaped groove away from the exposed end is smaller than the diameter of the exposed end. This facilitates the mating operation of the joint and the insulating tube, and the tensile performance is better due to the overall stress of the bonded structure when subjected to tension.
优选地,上述圆柱段的直径与上述绝缘管直径相适应,上述圆柱段上设置至少一道连通相邻的两个上述楔形凹槽的流胶槽。这样在接头与绝缘管配接时,圆柱段可以作为基准保证配接的同轴度,并且能够对绝缘管或者收容腔的管壁起一定的支撑作用,提高配接部位的强度。流胶槽可以使得胶液方便充分地注满多个楔形凹槽组成的楔形容胶腔,避免圆柱段与绝缘管内壁接触过于紧密而影响胶液的充分注入。Preferably, the diameter of the cylindrical section is adapted to the diameter of the insulating tube, and the cylindrical section is provided with at least one flow tank communicating with two adjacent wedge-shaped recesses. In this way, when the joint is matched with the insulating tube, the cylindrical section can serve as a reference to ensure the coaxiality of the mating, and can support the insulating tube or the tube wall of the receiving cavity to improve the strength of the mating portion. The flow glue tank can make the glue liquid conveniently fill the wedge-shaped plastic cavity of the plurality of wedge-shaped grooves, and avoid the contact between the cylindrical section and the inner wall of the insulating tube is too tight, which affects the sufficient injection of the glue.
优选地,上述插入端远离上述外露端的部分为头部,上述头部与上述绝缘管之间设置第一密封槽,上述第一密封槽中设置第一密封圈。这样可以密封楔形容胶腔与绝缘管壁,防止胶液渗漏导致楔形容胶腔中胶液注入不充分,从而避免影响粘接效果,避免浪费胶液。Preferably, a portion of the insertion end away from the exposed end is a head, a first sealing groove is disposed between the head and the insulating tube, and a first sealing ring is disposed in the first sealing groove. In this way, the wedge-shaped plastic cavity and the insulating pipe wall can be sealed, and the leakage of the glue liquid is prevented, thereby causing insufficient injection of the glue in the wedge-shaped cavity, thereby avoiding the influence of the bonding effect and avoiding the waste of the glue.
优选地,上述插入端靠近上述外露端的部分为尾部,上述尾部与上述绝缘管之间设置第二密封槽,上述第二密封槽中设置第二密封圈。这样可以进
一步密封楔形容胶腔与绝缘管壁,防止胶液渗漏导致楔形容胶腔中胶液注入不充分,从而避免影响粘接效果,避免浪费胶液。Preferably, the portion of the insertion end adjacent to the exposed end is a tail portion, a second sealing groove is disposed between the tail portion and the insulating tube, and a second sealing ring is disposed in the second sealing groove. This way
One-step sealing of the wedge-shaped plastic cavity and the insulating pipe wall prevents the leakage of the glue liquid, resulting in insufficient injection of the glue in the wedge-shaped cavity, thereby avoiding the influence of the bonding effect and avoiding the waste of the glue.
优选地,上述外露端与上述绝缘管端部相接触的位置设置挡沿,上述挡沿与上述绝缘管的端面抵靠接触。这样在配接接头与绝缘管时,挡沿与绝缘管端部形成抵靠接触可以方便地进行装配定位。Preferably, the exposed end is provided with a stop at a position in contact with the end of the insulating tube, and the retaining edge abuts against the end surface of the insulating tube. Thus, when the joint and the insulating tube are mated, the retaining edge can be easily assembled and positioned by forming an abutting contact with the end of the insulating tube.
优选地,上述接头上设置沿上述绝缘管轴向贯通的排气孔。这样可以方便地向绝缘管内部充入绝缘气体,保证绝缘性能。Preferably, the joint is provided with an exhaust hole penetrating in the axial direction of the insulating tube. This makes it easy to fill the inside of the insulating tube with insulating gas to ensure insulation performance.
优选地,上述绝缘管或上述插入端的端部上设置便于配接的第一锥面。Preferably, the insulating tube or the end of the insertion end is provided with a first tapered surface for easy fitting.
优选地,上述绝缘管供上述插入端插入部分的内径相等。这样可以方便地将插入端插入绝缘管中。Preferably, the insulating tube has an inner diameter equal to the insertion end insertion portion. This makes it easy to insert the insertion end into the insulating tube.
优选地,上述收容腔中供上述绝缘管插入部分的内径相等。这样可以方便地将绝缘管插入收容腔中。Preferably, the inner diameter of the insertion portion of the insulating tube in the receiving chamber is equal. This makes it easy to insert the insulating tube into the receiving chamber.
优选地,上述通孔中设置封堵件。这样可以避免水汽由通孔渗入楔形容胶腔中导致固化的胶老化而减弱粘接强度。Preferably, a blocking member is disposed in the through hole. This can prevent moisture from penetrating into the wedge-shaped cavity by the through hole, which causes the cured glue to age and weaken the bond strength.
优选地,上述楔形容胶腔中设置至少一道固胶槽。设置该固胶槽可以使得楔形容胶腔中储存更多的胶液,粘接效果更好,接头与绝缘管的连接更牢固。Preferably, at least one glue groove is disposed in the wedge-shaped cavity. The solid glue tank can be arranged to store more glue in the wedge-shaped rubber cavity, the bonding effect is better, and the connection between the joint and the insulating tube is stronger.
优选地,上述通孔设置在上述绝缘管的同一母线上。这样可以方便地观察胶液是否充满楔形容胶腔。Preferably, the through holes are provided on the same bus bar of the insulating tube. This makes it easy to see if the glue fills the wedge-shaped cavity.
优选地,上述通孔中至少一个为螺纹孔。这样可以增加封堵件与通孔之间的连接力度,使得封堵可靠。Preferably, at least one of the through holes is a threaded hole. This can increase the strength of the connection between the blocking member and the through hole, so that the sealing is reliable.
图1是本发明实施例一的绝缘拉杆100的局部剖视图;1 is a partial cross-sectional view of an insulating tie rod 100 according to a first embodiment of the present invention;
图2是本发明实施例一的绝缘拉杆100上接头102与绝缘管101连接的局部放大剖视图;2 is a partial enlarged cross-sectional view showing the connection of the joint 102 and the insulating tube 101 on the insulating tie rod 100 according to the first embodiment of the present invention;
图3是本发明实施例一的接头102的示意图;Figure 3 is a schematic view of a joint 102 in accordance with a first embodiment of the present invention;
图4是本发明实施例一的绝缘管101的局部放大剖视图;Figure 4 is a partially enlarged cross-sectional view showing an insulating tube 101 according to Embodiment 1 of the present invention;
图5是本发明实施例二的绝缘拉杆上接头202与绝缘管201连接的局部
放大剖视图;Figure 5 is a view showing a portion of the insulating tie rod upper joint 202 connected to the insulating tube 201 according to the second embodiment of the present invention.
Enlarged sectional view;
图6是本发明实施例三的绝缘拉杆上接头302与绝缘管301连接的局部放大剖视图;Figure 6 is a partially enlarged cross-sectional view showing the connection of the insulating tie rod upper joint 302 and the insulating tube 301 according to the third embodiment of the present invention;
图7是本发明实施例四的绝缘拉杆上接头402与绝缘管401连接的局部放大剖视图;Figure 7 is a partially enlarged cross-sectional view showing the connection of the insulating tie rod upper joint 402 and the insulating tube 401 according to the fourth embodiment of the present invention;
图8是本发明实施例五的绝缘拉杆上接头502与绝缘管501连接的局部放大剖视图。Figure 8 is a partially enlarged cross-sectional view showing the connection of the insulating tie rod upper joint 502 and the insulating tube 501 according to the fifth embodiment of the present invention.
根据要求,这里将披露本发明的具体实施方式。然而,应当理解的是,这里所披露的实施方式仅仅是本发明的典型例子而已,其可体现为各种形式。因此,这里披露的具体细节不被认为是限制性的,而仅仅是作为权利要求的基础以及作为用于教导本领域技术人员以实际中任何恰当的方式不同地应用本发明的代表性的基础,包括采用这里所披露的各种特征并结合这里可能没有明确披露的特征。Specific embodiments of the invention are disclosed herein as required. However, it should be understood that the embodiments disclosed herein are merely exemplary of the invention and may be embodied in various forms. Therefore, the specific details disclosed herein are not to be construed as limiting, but rather as the basis of the claims, and as a representative basis for teaching the skilled in the art to apply the present invention differently in any suitable manner in practice. This includes the use of various features disclosed herein in conjunction with features that may not be explicitly disclosed herein.
实施例一:Embodiment 1:
如图1和图2所示,本实施例的绝缘拉杆100包括呈直筒状的绝缘管101和配接在绝缘管101两端的接头102,接头102包括沿绝缘管101轴向插入绝缘管101中的插入端110以及自插入端110延伸而出的外露端120。插入端110外壁与绝缘管101之间设置楔形容胶腔130,楔形容胶腔130中填充胶液131,绝缘管101与插入端110相对应的管壁上设置两个与楔形容胶腔130相连通的通孔103。As shown in FIG. 1 and FIG. 2, the insulating tie rod 100 of the present embodiment includes an insulating tube 101 in a straight cylindrical shape and a joint 102 coupled to both ends of the insulating tube 101. The joint 102 includes an insulating tube 101 inserted axially along the insulating tube 101. The insertion end 110 and the exposed end 120 extending from the insertion end 110. A wedge-shaped adhesive cavity 130 is disposed between the outer wall of the insertion end 110 and the insulating tube 101. The wedge-shaped adhesive cavity 130 is filled with a glue 131. The insulating tube 101 is provided with two wedge-shaped adhesive cavities 130 on the wall corresponding to the insertion end 110. Through holes 103 that communicate with each other.
在本实施例中,绝缘管101为环氧树脂浸渍玻璃纤维缠绕绝缘管或其他复合材料绝缘管,接头102为铝合金或不锈钢等金属材料制成。In the present embodiment, the insulating tube 101 is an epoxy resin impregnated glass fiber wound insulating tube or other composite insulating tube, and the joint 102 is made of a metal material such as aluminum alloy or stainless steel.
具体地,参见图2及图3,插入端110整体呈圆柱状,其外径与绝缘管101的内径相适应。插入端110上设置两个沿绝缘管101轴向相邻的楔形凹槽111,楔形凹槽111远离外露端120部分的直径小于靠近外露端120部分的直径。楔形凹槽111的底面1111与外端面呈楔形,在本实施例中,楔形凹槽111的外端面即楔形凹槽111最大直径所在的圆柱面,也即图3中圆柱
段112的外圆面。楔形凹槽111的底面1111为圆锥面,当然也可以为棱锥面。插入端110插入绝缘管101后,楔形凹槽111与绝缘管101内壁之间形成的空间为楔形容胶腔130。楔形凹槽111的小直径端部与插入端110外壁之间形成台阶挡边114,在绝缘拉杆100受到拉力时,台阶挡边114与楔形凹槽111的底面可以同时承受拉力,能够分散受力面,有效改善胶装连接部位的受力情况,提高拉伸强度,提高安全性能。当然,本发明不局限于此,楔形凹槽111远离外露端120部分的直径也可以大于靠近外露端120部分的直径。在本实施例中,楔形凹槽111沿绝缘管101的轴向在插入端110的外壁上周向环绕设置,呈连续环状,这样能够形成连续的容胶空间。当然,本发明并不局限于此,也可以在插入端110的外壁上间隔设置多道楔形凹槽111,只要能够容纳胶液131即可。Specifically, referring to FIGS. 2 and 3, the insertion end 110 has a cylindrical shape as a whole, and its outer diameter is adapted to the inner diameter of the insulating tube 101. Two insertion grooves 111 axially adjacent to the insulating tube 101 are disposed on the insertion end 110, and the diameter of the portion of the wedge groove 111 away from the exposed end 120 is smaller than the diameter of the portion near the exposed end 120. The bottom surface 1111 of the wedge-shaped groove 111 has a wedge shape with the outer end surface. In the embodiment, the outer end surface of the wedge-shaped groove 111, that is, the cylindrical surface of the wedge-shaped groove 111 having the largest diameter, that is, the cylinder in FIG.
The outer circumference of the segment 112. The bottom surface 1111 of the wedge groove 111 is a conical surface, and may of course be a pyramid surface. After the insertion end 110 is inserted into the insulating tube 101, a space formed between the wedge-shaped recess 111 and the inner wall of the insulating tube 101 is a wedge-shaped adhesive cavity 130. A stepped rib 114 is formed between the small-diameter end of the wedge-shaped recess 111 and the outer wall of the insertion end 110. When the insulating rod 100 is subjected to a tensile force, the step rib 114 and the bottom surface of the wedge-shaped recess 111 can simultaneously receive tensile force and can disperse the force. The surface effectively improves the stress on the joint of the plastic part, improves the tensile strength, and improves the safety performance. Of course, the invention is not limited thereto, and the diameter of the portion of the wedge groove 111 away from the exposed end 120 may also be larger than the diameter of the portion near the exposed end 120. In the present embodiment, the wedge-shaped recess 111 is circumferentially circumferentially disposed on the outer wall of the insertion end 110 in the axial direction of the insulating tube 101, and has a continuous annular shape, so that a continuous adhesive space can be formed. Of course, the present invention is not limited thereto, and a plurality of wedge-shaped grooves 111 may be spaced apart on the outer wall of the insertion end 110 as long as the glue 131 can be accommodated.
参见图2和图4,在本实施例中,两个通孔103均为光孔,两个通孔103分别设置在绝缘管101上对应插入端110两端的部分,并分别与两个楔形凹槽111相对应,两个通孔103设置在绝缘管101的同一母线上。胶装时,从其中一个通孔103向楔形容胶腔130中注入胶液131,从另一个通孔103中排出空气。由于两个通孔103设置在绝缘管101的同一母线上,在胶装时,操作人员可以在注入胶液131的同时方便直观地观察另一个通孔103中是否有胶液131溢出,保证胶液131注入充分,粘接可靠。当然,本发明并不局限于此,通孔103的个数也可以是一个或三个或更多个,只要能够保证胶液131的顺利充分注入即可。多个通孔103也可以设置在绝缘管101管壁上的任意位置,只要能够与楔形容胶腔130连通即可。Referring to FIG. 2 and FIG. 4, in the embodiment, the two through holes 103 are optical holes, and the two through holes 103 are respectively disposed on the insulating tube 101 corresponding to the ends of the insertion end 110, and are respectively formed with two wedge-shaped concaves. The slots 111 correspond to each other, and the two through holes 103 are disposed on the same bus bar of the insulating tube 101. During the gluing, the glue 131 is injected from one of the through holes 103 into the wedge-shaped cavities 130, and the air is discharged from the other through holes 103. Since the two through holes 103 are disposed on the same bus bar of the insulating tube 101, the operator can conveniently and intuitively observe whether the glue 131 overflows in the other through hole 103 while injecting the glue 131, and ensure the glue. The liquid 131 is sufficiently injected and the bonding is reliable. Of course, the present invention is not limited thereto, and the number of the through holes 103 may be one or three or more as long as the smooth and sufficient injection of the glue 131 can be ensured. The plurality of through holes 103 may also be disposed at any position on the wall of the insulating tube 101 as long as it can communicate with the wedge shaped cavities 130.
参见图2和图3,相邻的两个楔形凹槽111之间设置与绝缘管101内径相适应的圆柱段112。靠近外露端120一侧的楔形凹槽111的小直径端部与圆柱段112端部同样形成台阶挡边114,该台阶挡边114同样可以承受部分拉力,增强拉伸强度,提高安全性能。Referring to Figures 2 and 3, a cylindrical section 112 is provided between the adjacent two wedge-shaped recesses 111 to accommodate the inner diameter of the insulating tube 101. The small-diameter end of the wedge-shaped recess 111 near the exposed end 120 side also forms a stepped rib 114 with the end of the cylindrical section 112. The stepped rib 114 can also withstand partial tension, enhance tensile strength, and improve safety.
具体地,圆柱段112上设置一道连通相邻两个楔形凹槽111的流胶槽113。在本实施例中,流胶槽113为沿绝缘管101的轴向设置在圆柱段112外壁上的矩形槽,流胶槽113的两端连通相邻的两个楔形凹槽111,流胶槽113的两端与楔形凹槽111相连接的部分为弧形,使得注胶时胶液131能够
方便地从其中一个楔形凹槽111流过圆柱段112并流入充满另一个楔形凹槽111,进而能够向楔形容胶腔130中充分地注满胶液131,保证粘接强度。当然,也可以设置多道流胶槽113,流胶槽113的横截面也可以为三角形、半圆形等其他形状。当然,本发明不局限于此,圆柱段112的直径也可以小于绝缘管101的内径,这样无需设置流胶槽113,向楔形容胶腔130中充分地注满胶液131进行胶装即可。Specifically, the cylindrical section 112 is provided with a flow tank 113 that communicates with the adjacent two wedge-shaped recesses 111. In this embodiment, the flow tank 113 is a rectangular groove disposed on the outer wall of the cylindrical section 112 along the axial direction of the insulating tube 101. The two ends of the flow tank 113 communicate with the adjacent two wedge-shaped recesses 111, and the flow tank The portion of the 113 end which is connected to the wedge groove 111 is curved, so that the glue 131 can be injected during the injection.
Conveniently, one of the wedge-shaped grooves 111 flows through the cylindrical section 112 and flows into the other wedge-shaped recess 111, so that the molten liquid 131 can be sufficiently filled into the wedge-shaped adhesive cavity 130 to ensure the bonding strength. Of course, a multi-channel glue tank 113 may also be provided, and the cross-section of the glue tank 113 may also be triangular, semi-circular or the like. Of course, the present invention is not limited thereto, and the diameter of the cylindrical section 112 can also be smaller than the inner diameter of the insulating tube 101, so that it is not necessary to provide the glue flow tank 113, and the glue cavity 131 can be fully filled into the wedge-shaped adhesive cavity 130 to be glued. .
参见图2和图3,插入端110远离外露端120的部分为头部115,头部115的外壁上设置第一密封槽116,第一密封槽116中设置第一密封圈132。插入端110靠近外露端120的部分为尾部117,尾部117的外壁上设置第二密封槽118,第二密封槽118中设置第二密封圈133。设置第一密封槽116与第一密封圈132可以密封楔形容胶腔130与绝缘管101内壁,防止胶液131渗漏进绝缘管101导致楔形容胶腔130中的胶液131注入不充分,从而避免影响粘接效果,避免浪费胶液。设置第二密封槽118与第二密封圈133可以使得楔形容胶腔130与外界之间密封,防止胶液131从插入端110底部渗漏到外露端120上,从而避免浪费胶液131,保证绝缘拉杆100表面清洁。2 and FIG. 3, the portion of the insertion end 110 away from the exposed end 120 is a head 115. The outer wall of the head 115 is provided with a first sealing groove 116, and the first sealing groove 116 is provided with a first sealing ring 132. The portion of the insertion end 110 near the exposed end 120 is a tail portion 117. The outer wall of the tail portion 117 is provided with a second sealing groove 118, and the second sealing groove 118 is provided with a second sealing ring 133. The first sealing groove 116 and the first sealing ring 132 can seal the wedge-shaped adhesive cavity 130 and the inner wall of the insulating tube 101 to prevent the glue 131 from leaking into the insulating tube 101, thereby causing insufficient injection of the glue 131 in the wedge-shaped adhesive cavity 130. So as to avoid affecting the bonding effect and avoid wasting glue. The second sealing groove 118 and the second sealing ring 133 can seal between the wedge-shaped adhesive cavity 130 and the outside, preventing the glue 131 from leaking from the bottom of the insertion end 110 to the exposed end 120, thereby avoiding waste of the glue 131 and ensuring The surface of the insulating rod 100 is clean.
具体地,在本实施例中,第一密封槽116、第二密封槽118沿绝缘管101轴线方向的截面均为矩形,第一密封圈132、第二密封圈133均为矩形密封圈,可采用三元乙丙、丁腈橡胶、氟橡胶或氟硅橡胶等材料中的任一材料制作。当然,本发明不局限于此,第一密封槽116、第二密封槽118沿绝缘管101轴线方向的截面可以为梯形、三角形等其他形状;第一密封圈132、第二密封圈133也可以采用O形密封圈、梯形密封圈、异形密封圈等。同样也可以设置多道第一密封槽116、第二密封槽118,相应地配合多个第一密封圈132、第二密封圈133以保证密封效果。Specifically, in the embodiment, the first sealing groove 116 and the second sealing groove 118 are both rectangular in cross section along the axial direction of the insulating tube 101, and the first sealing ring 132 and the second sealing ring 133 are rectangular sealing rings. It is made of any material such as EPDM, nitrile rubber, fluororubber or fluorosilicone rubber. Of course, the present invention is not limited thereto, and the cross section of the first sealing groove 116 and the second sealing groove 118 along the axial direction of the insulating tube 101 may be trapezoidal, triangular or the like; the first sealing ring 132 and the second sealing ring 133 may also be O-ring seals, trapezoidal seals, special-shaped seals, etc. are used. Similarly, a plurality of first sealing grooves 116 and second sealing grooves 118 may be provided, and a plurality of first sealing rings 132 and second sealing rings 133 are correspondingly matched to ensure a sealing effect.
参见图2和图3,外露端120的外径小于绝缘管101的外径但大于绝缘管101的内径,外露端120与插入端110相连接的部位自然形成挡沿121,在插入端110插入绝缘管101中后,挡沿121与绝缘管101的端面相抵靠形成抵靠接触从而可以方便地进行装配定位。当然,本发明并不局限于此,外露端120的外径也可以小于绝缘管101的内径,可通过在外露端120与绝缘管101端部相接触的位置设置环状凸起作为挡沿121或者其他方式形成抵靠
接触以便于装配定位。Referring to FIG. 2 and FIG. 3, the outer diameter of the exposed end 120 is smaller than the outer diameter of the insulating tube 101 but larger than the inner diameter of the insulating tube 101, and the exposed end 120 is connected to the insertion end 110 to form a blocking edge 121, which is inserted at the insertion end 110. After the insulating tube 101 is in the middle, the retaining edge 121 abuts against the end surface of the insulating tube 101 to form an abutting contact, so that the assembly positioning can be conveniently performed. Of course, the present invention is not limited thereto, and the outer diameter of the exposed end 120 may also be smaller than the inner diameter of the insulating tube 101, and an annular protrusion may be provided as a blocking edge 121 at a position where the exposed end 120 is in contact with the end of the insulating tube 101. Or other ways to form abutment
Contact for assembly positioning.
参见图2,接头102上设置沿绝缘管101轴向贯通的排气孔119。设置排气孔119可以方便地向绝缘管101内部充入绝缘气体,保证绝缘性能。具体地,排气孔119的横截面为圆形,与绝缘管101同轴心设置。当然,本发明不局限于此,排气孔119的横截面也可以为方形、三角形、多边形、异形等其他形状,也可以不与绝缘管101同轴心设置,只要能够实现向绝缘管101内部充入绝缘气体即可。Referring to Fig. 2, a vent hole 119 penetrating in the axial direction of the insulating tube 101 is disposed on the joint 102. The vent hole 119 is provided to conveniently fill the inside of the insulating tube 101 with an insulating gas to ensure insulation performance. Specifically, the exhaust hole 119 has a circular cross section and is disposed concentrically with the insulating tube 101. Of course, the present invention is not limited thereto, and the cross section of the vent hole 119 may be other shapes such as a square, a triangle, a polygon, a profile, or the like, or may not be disposed concentrically with the insulating tube 101 as long as it can be realized to the inside of the insulating tube 101. Fill with insulating gas.
参加图2和图4,绝缘管101端部的内壁上设置便于插入端110插入的第一锥面104。具体地,第一锥面104为圆锥面,当然也可以为棱锥面。第一锥面104远离外露端120部分的直径小于靠近外露端120部分的直径,第一锥面104靠近外露端120部分的直径略大于插入端110的外径,第一锥面104沿绝缘管101轴向的长度以方便插入操作为准。2 and 4, the inner wall of the end portion of the insulating tube 101 is provided with a first tapered surface 104 for facilitating the insertion of the insertion end 110. Specifically, the first tapered surface 104 is a conical surface, and may of course be a pyramidal surface. The diameter of the portion of the first tapered surface 104 away from the exposed end 120 is smaller than the diameter of the portion near the exposed end 120. The diameter of the portion of the first tapered surface 104 near the exposed end 120 is slightly larger than the outer diameter of the insertion end 110, and the first tapered surface 104 is along the insulating tube. The axial length of 101 is subject to the ease of insertion.
参见图4,绝缘管101供插入端110插入部分的内壁105的内径相等。在本实施例中,绝缘管101通过在芯模上缠绕环氧树脂浸渍的玻璃纤维并固化而成,为方便脱模,芯模一般具有一定的锥度,因而制造完成的绝缘管101的内壁是一锥面。而由于插入端110整体呈圆柱状,且其外径与绝缘管内径相适应,若直接插入绝缘管101中会磨损绝缘管101的内壁,影响绝缘管101的整体强度。通过车削或打磨等方式使得内壁105的内径相等,即内壁105部分呈圆柱状,这样可以顺利地将插入端110插入绝缘管101中,保证绝缘管101的整体强度。Referring to Fig. 4, the insulating tube 101 has an inner diameter equal to the inner wall 105 of the insertion portion of the insertion end 110. In the present embodiment, the insulating tube 101 is formed by winding epoxy resin-impregnated glass fibers on a core mold and solidifying. In order to facilitate demolding, the core mold generally has a certain taper, and thus the inner wall of the manufactured insulating tube 101 is a cone. Since the insertion end 110 has a cylindrical shape as a whole and its outer diameter is adapted to the inner diameter of the insulating tube, if it is directly inserted into the insulating tube 101, the inner wall of the insulating tube 101 is worn, which affects the overall strength of the insulating tube 101. The inner diameter of the inner wall 105 is made equal by turning or grinding, that is, the inner wall 105 is partially cylindrical, so that the insertion end 110 can be smoothly inserted into the insulating tube 101, and the overall strength of the insulating tube 101 can be ensured.
实施例二:Embodiment 2:
参见图5,本发明第二实施例与第一实施例基本相同,与第一实施例不同的是,插入端210上仅设置一个楔形凹槽211。两个通孔203分别设置在绝缘管201径向上相对的两条母线上。排气孔219未设置在接头202上,而是设置在绝缘管201的外壁上,连通外界与绝缘管201的内壁。Referring to Fig. 5, the second embodiment of the present invention is substantially the same as the first embodiment. Unlike the first embodiment, only one wedge-shaped recess 211 is provided on the insertion end 210. Two through holes 203 are respectively disposed on the two bus bars opposite to each other in the radial direction of the insulating tube 201. The vent hole 219 is not provided on the joint 202, but is disposed on the outer wall of the insulating tube 201 to communicate with the outside and the inner wall of the insulating tube 201.
当然,本发明不局限于此,插入端210上也可以不设置楔形凹槽211,而是直接由插入端210外壁与绝缘管201内壁之间形成楔形容胶腔230,或者也可以在绝缘管201内壁上设置楔形凹槽211,只要能够将接头202与绝缘管201粘接起来即可。显然,也可以在插入端210上设置三个或更多个楔
形凹槽211。Of course, the present invention is not limited thereto, and the wedge-shaped recess 211 may not be disposed on the insertion end 210, but the wedge-shaped adhesive cavity 230 may be directly formed between the outer wall of the insertion end 210 and the inner wall of the insulating tube 201, or may be in the insulating tube. A wedge groove 211 is provided in the inner wall of 201 as long as the joint 202 can be bonded to the insulating tube 201. Obviously, three or more wedges can also be placed on the insertion end 210.
Shaped groove 211.
在本实施例中,通孔203为螺纹孔,通孔203中还设置有封堵件(未示出)。封堵件可以采用螺钉或者橡皮塞等,在通孔203中旋入螺钉或者塞入橡皮塞等封堵件,并使得胶液充盈封堵件与通孔203之间的间隙。这样可以避免水汽由通孔203渗入楔形容胶腔230中导致固化的胶老化而减弱粘接强度。In the present embodiment, the through hole 203 is a threaded hole, and a blocking member (not shown) is further disposed in the through hole 203. The sealing member may be a screw or a rubber stopper or the like, and a screw or a rubber plug or the like is screwed into the through hole 203, and the glue is filled with a gap between the sealing member and the through hole 203. In this way, it is possible to prevent moisture from penetrating into the wedge-shaped adhesive cavity 230 through the through hole 203, thereby causing the cured rubber to age and weaken the bonding strength.
在本实施例中,第一密封槽216设置在与头部215相对应的绝缘管201内壁上,第一密封槽216中设置第一密封圈232。当然。第二密封槽也可以设置在绝缘管201的内壁上,在此不再赘述。In the present embodiment, the first sealing groove 216 is disposed on the inner wall of the insulating tube 201 corresponding to the head portion 215, and the first sealing ring 232 is disposed in the first sealing groove 216. of course. The second sealing groove may also be disposed on the inner wall of the insulating tube 201, and details are not described herein.
在本实施例中,楔形容胶腔230中还设置了环形的固胶槽234。这样可以使得楔形容胶腔230中储存更多的胶液,粘接效果更好,接头202与绝缘管201的连接更牢固。固胶槽234沿绝缘管201轴线方向的截面为矩形,显然也可以为梯形、三角形等其他形状。具体地,在插入端210内壁上设置四道固胶槽234,在楔形容胶腔230中对应位置的绝缘管201外壁上设置四道固胶槽234。显然,本发明并不局限于此,也可以仅在插入端210外壁上或者仅在位于楔形容胶腔230中对应位置的绝缘管201内壁上设置一道或多道固胶槽234。当然,固胶槽234也可以沿绝缘管201轴线方向设置成螺旋形等其他形式。In this embodiment, an annular glue groove 234 is further disposed in the wedge-shaped cavity 302. In this way, more glue can be stored in the wedge-shaped adhesive cavity 230, the bonding effect is better, and the connection between the joint 202 and the insulating tube 201 is stronger. The cross section of the solid groove 234 in the axial direction of the insulating tube 201 is a rectangle, and it is obvious that other shapes such as a trapezoid or a triangle may be used. Specifically, four solid glue grooves 234 are disposed on the inner wall of the insertion end 210, and four solid glue grooves 234 are disposed on the outer wall of the insulating tube 201 at corresponding positions in the wedge-shaped plastic cavity 230. Obviously, the present invention is not limited thereto, and one or more glue grooves 234 may be disposed only on the outer wall of the insertion end 210 or only on the inner wall of the insulating tube 201 at a corresponding position in the wedge-shaped plastic chamber 230. Of course, the glue groove 234 may be disposed in a spiral shape or the like along the axial direction of the insulating tube 201.
实施例三:Embodiment 3:
参见图6,本发明第三实施例与第一实施例基本相同,与第一实施例不同的是,本实施例中在绝缘管301的内壁上与插入端310的外壁上均设置两个楔形凹槽311。绝缘管301内壁上的楔形凹槽311与插入端310外壁上的楔形凹槽311相对应设置,相对应形成的空间为楔形容胶腔330。这样能够容纳更多的胶液331,有效增强胶装强度,并且在绝缘拉杆受到拉力时,绝缘管301与插入端110上的楔形凹槽311的底面和台阶挡边314可以同时承受拉力,能够分散受力面,有效改善胶装连接部位的受力情况,提高拉伸强度,提高安全性能。Referring to Fig. 6, the third embodiment of the present invention is substantially the same as the first embodiment. In the present embodiment, two wedges are disposed on the inner wall of the insulating tube 301 and the outer wall of the insertion end 310 in this embodiment. Groove 311. The wedge-shaped recess 311 on the inner wall of the insulating tube 301 is disposed corresponding to the wedge-shaped recess 311 on the outer wall of the insertion end 310, and the space formed correspondingly is the wedge-shaped adhesive cavity 330. In this way, more glue 331 can be accommodated, the adhesive strength is effectively enhanced, and when the insulating rod is subjected to the pulling force, the insulating tube 301 and the bottom surface of the wedge groove 311 on the insertion end 110 and the step rib 314 can simultaneously receive the pulling force. Disperse the force surface, effectively improve the stress on the joint of the plastic joint, improve the tensile strength and improve the safety performance.
当然,本发明并不局限于此,绝缘管301内壁上的楔形凹槽311与插入端110外壁上的楔形凹槽311也可以相间设置,相应地,绝缘管301内壁上
的楔形凹槽311与插入端110外壁所形成的空间为楔形容胶腔330,插入端110外壁上的楔形凹槽311与绝缘管301内壁所形成的空间也为楔形容胶腔330。Of course, the present invention is not limited thereto, and the wedge-shaped recess 311 on the inner wall of the insulating tube 301 and the wedge-shaped recess 311 on the outer wall of the insertion end 110 may also be disposed, and correspondingly, the inner wall of the insulating tube 301
The space formed by the wedge-shaped recess 311 and the outer wall of the insertion end 110 is a wedge-shaped adhesive cavity 330. The space formed by the wedge-shaped recess 311 on the outer wall of the insertion end 110 and the inner wall of the insulating tube 301 is also a wedge-shaped adhesive cavity 330.
实施例四:Embodiment 4:
参见图7,本发明第四实施例与第一实施例基本相同,与第一实施例不同的是,在本实施例中,插入端410上设置收容腔440,绝缘管401插入收容腔440中,收容腔440内壁与绝缘管401外壁之间设置楔形容胶腔430。具体地,收容腔440为一圆形盲孔,其内径与绝缘管401的外径相适应。在收容腔440内壁上设置两道环形的楔形凹槽411,楔形凹槽411与绝缘管401外壁之间形成的空间为楔形容胶腔430。Referring to FIG. 7, the fourth embodiment of the present invention is substantially the same as the first embodiment. The first embodiment is different from the first embodiment. In this embodiment, the insertion end 410 is provided with a receiving cavity 440, and the insulating tube 401 is inserted into the receiving cavity 440. A wedge-shaped adhesive cavity 430 is disposed between the inner wall of the receiving cavity 440 and the outer wall of the insulating tube 401. Specifically, the receiving cavity 440 is a circular blind hole whose inner diameter is adapted to the outer diameter of the insulating tube 401. Two annular wedge-shaped recesses 411 are formed in the inner wall of the receiving cavity 440. The space formed between the wedge-shaped recess 411 and the outer wall of the insulating tube 401 is a wedge-shaped adhesive cavity 430.
头部415的内壁上设置第一密封槽416,第一密封槽416中设置第一密封圈432。尾部417的内壁上设置第二密封槽418,第二密封槽418中设置第二密封圈433。这样可以密封楔形容胶腔430,防止胶液431渗漏,避免浪费。通孔403设置插入端410的外壁上并与楔形容胶腔430相连通以便于注入胶液431。当然,本发明不局限于此,也可以不设置通孔403,而是在绝缘管401外壁上涂抹胶液431后将绝缘管401插入收容腔440中进行胶装。A first sealing groove 416 is disposed on the inner wall of the head 415, and a first sealing ring 432 is disposed in the first sealing groove 416. A second sealing groove 418 is disposed on the inner wall of the tail portion 417, and a second sealing ring 433 is disposed in the second sealing groove 418. This can seal the wedge-shaped adhesive cavity 430, preventing the glue 431 from leaking and avoiding waste. The through hole 403 is disposed on the outer wall of the insertion end 410 and communicates with the wedge shaped cavity 430 to facilitate the injection of the glue 431. Of course, the present invention is not limited thereto, and the through hole 403 may not be provided, but the glue 431 is applied to the outer wall of the insulating tube 401, and the insulating tube 401 is inserted into the receiving cavity 440 for binding.
绝缘管401端部的外壁上设置第一锥面404以便于绝缘管401插入收容腔440中。收容腔440的内径相等以便于绝缘管401顺利插入,收容腔440的内壁端部自然形成挡沿421以便于绝缘管401插入后形成抵靠接触进行装配定位。A first tapered surface 404 is disposed on the outer wall of the end of the insulating tube 401 to facilitate insertion of the insulating tube 401 into the receiving cavity 440. The inner diameter of the receiving cavity 440 is equal to facilitate the smooth insertion of the insulating tube 401. The inner wall end of the receiving cavity 440 naturally forms a blocking edge 421 to form an abutting contact for the assembly position after the insulating tube 401 is inserted.
当然,本发明不局限于此,楔形凹槽411也可以设置在绝缘管401外壁上或者同时在收容腔440内壁上以及绝缘管401外壁上设置多个楔形凹槽411以形成楔形容胶腔430。Of course, the present invention is not limited thereto, and the wedge-shaped recess 411 may be disposed on the outer wall of the insulating tube 401 or at the same time, a plurality of wedge-shaped recesses 411 are formed on the inner wall of the receiving cavity 440 and the outer wall of the insulating tube 401 to form the wedge-shaped adhesive cavity 430. .
实施例五:Embodiment 5:
参见图8,本发明第五实施例与第一实施例基本相同,与第一实施例不同的是,在本实施例中,插入端510包括插入绝缘管501内部的内插入端550以及供绝缘管501插入的外插入端560,内插入端550与外插入端560之间形成的空间为收容腔540。在本实施例中,外插入端560和内插入端550分体设置。具体地,外插入端560为一圆形套筒,其尾部517与外露端520相
接触的内壁上设置内螺纹(未示出),外露端520上相应位置设置与之相配合的外螺纹(未示出)。外插入端560与外露端520通过螺纹连接。Referring to Fig. 8, the fifth embodiment of the present invention is substantially the same as the first embodiment. Unlike the first embodiment, in the present embodiment, the insertion end 510 includes an inner insertion end 550 inserted into the inside of the insulating tube 501 and is insulated. The outer insertion end 560 into which the tube 501 is inserted, the space formed between the inner insertion end 550 and the outer insertion end 560 is a receiving cavity 540. In the present embodiment, the outer insertion end 560 and the inner insertion end 550 are provided separately. Specifically, the outer insertion end 560 is a circular sleeve, and the tail portion 517 is opposite to the exposed end 520.
Internal threads (not shown) are provided on the inner wall of the contact, and external threads (not shown) are provided at corresponding positions on the exposed end 520. The outer insertion end 560 is threadedly coupled to the exposed end 520.
外插入端560的内壁上设置两道环形的楔形凹槽511,楔形凹槽511与绝缘管501外壁之间形成的空间为楔形容胶腔530。内插入端550的外壁上设置两道环形的楔形凹槽511,楔形凹槽511与绝缘管501内壁之间形成的空间也为楔形容胶腔530。Two annular wedge-shaped recesses 511 are defined in the inner wall of the outer insertion end 560. The space formed between the wedge-shaped recess 511 and the outer wall of the insulating tube 501 is a wedge-shaped adhesive cavity 530. Two annular wedge-shaped recesses 511 are disposed on the outer wall of the inner insertion end 550. The space formed between the wedge-shaped recess 511 and the inner wall of the insulating tube 501 is also a wedge-shaped adhesive cavity 530.
外插入端560上头部515的内壁上也设置第一密封槽516,第一密封槽516中设置第一密封圈532。外插入端560上尾部517的内壁上也设置第二密封槽518,第二密封槽518中设置第二密封圈533。绝缘管501端部的外壁上和外插入端560端部的内壁上也设置第一锥面504以便于将绝缘管501插入收容腔540中。通孔503设置在外插入端560的外壁上并和外插入端560与绝缘管501外壁之间的楔形容胶腔530相连通以便于注入胶液。胶装时,可以在内插入端550上涂抹胶液后将绝缘管501插入收容腔540中,然后将外插入端560通过螺纹与外露端520连接,并通过通孔503注胶进行胶装。A first sealing groove 516 is also disposed on the inner wall of the upper portion 515 of the outer insertion end 560, and a first sealing ring 532 is disposed in the first sealing groove 516. A second sealing groove 518 is also disposed on the inner wall of the tail portion 517 of the outer insertion end 560, and a second sealing ring 533 is disposed in the second sealing groove 518. A first tapered surface 504 is also provided on the outer wall of the end of the insulating tube 501 and the inner wall of the end of the outer insertion end 560 to facilitate insertion of the insulating tube 501 into the receiving cavity 540. The through hole 503 is disposed on the outer wall of the outer insertion end 560 and communicates with the wedge-shaped adhesive cavity 530 between the outer insertion end 560 and the outer wall of the insulating tube 501 to facilitate the injection of the glue. When the glue is applied, the insulating tube 501 can be inserted into the receiving cavity 540 after the glue is applied to the inner insertion end 550, and then the outer insertion end 560 is connected to the exposed end 520 by threads, and is glued through the through hole 503.
当然,本发明不局限于此,外插入端560和内插入端550也可以通过胶接、铆接、过盈配合等方式进行连接。或者外插入端560和内插入端550也可以一体设置,只要方便制造与装配即可。Of course, the present invention is not limited thereto, and the outer insertion end 560 and the inner insertion end 550 may also be connected by means of gluing, riveting, interference fit, and the like. Alternatively, the outer insertion end 560 and the inner insertion end 550 may be integrally provided as long as they are convenient to manufacture and assemble.
本发明的技术内容及技术特点已揭示如上,然而可以理解,在本发明的创作思想下,本领域的技术人员可以对上述结构和材料作各种变化和改进,包括这里单独披露或要求保护的技术特征的组合,明显地包括这些特征的其它组合。这些变形和/或组合均落入本发明所涉及的技术领域内,并落入本发明权利要求的保护范围。
The technical contents and technical features of the present invention have been disclosed above, however, it will be understood that those skilled in the art can make various changes and modifications to the above-described structures and materials, including separately disclosed or claimed herein. Combinations of technical features obviously include other combinations of these features. These variations and/or combinations are all within the technical scope of the present invention and fall within the scope of the claims of the present invention.
Claims (10)
- 一种绝缘拉杆,包括绝缘管和配接在所述绝缘管两端的接头,其特征在于:所述接头包括与所述绝缘管轴向配接的插入端以及自所述插入端延伸而出的外露端,所述插入端与所述绝缘管之间设置楔形容胶腔,所述楔形容胶腔中填充胶液。An insulating tie rod comprising an insulating tube and a joint coupled to both ends of the insulating tube, wherein the joint comprises an insertion end axially mated with the insulating tube and extending from the insertion end A wedge-shaped adhesive cavity is disposed between the insertion end and the insulating tube, and the wedge-shaped adhesive cavity is filled with glue.
- 如权利要求1所述的绝缘拉杆,其特征在于:所述绝缘管呈直筒状,所述插入端插入所述绝缘管中,所述插入端外壁与所述绝缘管内壁之间设置所述楔形容胶腔。The insulating tie rod according to claim 1, wherein said insulating tube has a straight cylindrical shape, said insertion end is inserted into said insulating tube, and said wedge is disposed between said outer wall of said insertion end and said inner wall of said insulating tube Describe the plastic cavity.
- 如权利要求1所述的绝缘拉杆,其特征在于:所述插入端上设置收容腔,所述绝缘管插入所述收容腔中,所述收容腔内壁与所述绝缘管外壁之间设置所述楔形容胶腔。The insulating tie rod according to claim 1, wherein the insertion end is provided with a receiving cavity, the insulating tube is inserted into the receiving cavity, and the inner wall of the receiving cavity is disposed between the outer wall of the insulating tube and the outer wall of the insulating tube. Wedge shaped cavity.
- 如权利要求1所述的绝缘拉杆,其特征在于:所述绝缘拉杆上设置至少两个与所述楔形容胶腔相连通的通孔。The insulating tie rod according to claim 1, wherein at least two through holes communicating with the wedge-shaped adhesive cavity are disposed on the insulating rod.
- 如权利要求1所述的绝缘拉杆,其特征在于:所述插入端或所述绝缘管上设置至少一个楔形凹槽形成所述楔形容胶腔,所述楔形凹槽的底面与外端面呈楔形。The insulating tie rod according to claim 1, wherein at least one wedge-shaped recess is formed on the insertion end or the insulating tube to form the wedge-shaped adhesive cavity, and the bottom surface and the outer end surface of the wedge-shaped groove are wedge-shaped. .
- 如权利要求5所述的绝缘拉杆,其特征在于:所述楔形凹槽沿所述绝缘管轴向周向环绕设置。The insulating tie rod according to claim 5, wherein said wedge-shaped recess is circumferentially disposed circumferentially along said insulating tube.
- 如权利要求5所述的绝缘拉杆,其特征在于:所述楔形凹槽至少为两个并沿所述绝缘管轴向相邻设置,相邻的两个所述楔形凹槽之间设置圆柱段。The insulating tie rod according to claim 5, wherein the wedge-shaped grooves are at least two and disposed adjacent to each other along the axial direction of the insulating tube, and a cylindrical portion is disposed between two adjacent ones of the wedge-shaped grooves. .
- 如权利要求5所述的绝缘拉杆,其特征在于:所述楔形凹槽远离所述外露端的直径小于靠近所述外露端的直径。 The insulating tie rod of claim 5 wherein said wedge shaped groove has a smaller diameter away from said exposed end than a diameter adjacent said exposed end.
- 如权利要求5所述的绝缘拉杆,其特征在于:所述圆柱段的直径与所述绝缘管直径相适应,所述圆柱段上设置至少一道连通相邻的两个所述楔形凹槽的流胶槽。The insulating tie rod according to claim 5, wherein the diameter of the cylindrical section is adapted to the diameter of the insulating tube, and the cylindrical section is provided with at least one flow connecting the two adjacent wedge-shaped grooves. Glue tank.
- 如权利要求1所述的绝缘拉杆,其特征在于:所述外露端与所述绝缘管端部相接触的位置设置挡沿,所述挡沿与所述绝缘管的端面抵靠接触。 The insulating tie rod according to claim 1, wherein a position at which the exposed end is in contact with the end portion of the insulating tube is provided, and the blocking edge abuts against the end surface of the insulating tube.
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CN201610526096.4A CN105977066B (en) | 2016-07-05 | 2016-07-05 | A kind of insulated pull rod |
CN201610526096.4 | 2016-07-05 |
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CN111399101A (en) * | 2020-04-02 | 2020-07-10 | 苏州市联超光电科技有限公司 | Multiband optical filter |
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