CN108320954B - Over-travel spring mounting structure for insulating pull rod - Google Patents
Over-travel spring mounting structure for insulating pull rod Download PDFInfo
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- CN108320954B CN108320954B CN201810259891.0A CN201810259891A CN108320954B CN 108320954 B CN108320954 B CN 108320954B CN 201810259891 A CN201810259891 A CN 201810259891A CN 108320954 B CN108320954 B CN 108320954B
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- 238000000034 method Methods 0.000 abstract description 17
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- 238000007906 compression Methods 0.000 abstract description 8
- 230000006835 compression Effects 0.000 abstract description 7
- 238000011900 installation process Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 239000008358 core component Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
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- Manufacturing & Machinery (AREA)
- Springs (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses an over-travel spring mounting structure for an insulating pull rod, which comprises a guide rod, a guide spring seat, an over-travel spring and a locking spring seat; the guide spring seat is connected with the guide rod through a connecting structure and can slide in a set distance along the axial direction relative to the guide rod; the over travel spring is sleeved on the guide rod along the axial direction of the guide rod, one end, close to the guide spring seat, of the over travel spring is propped against the guide spring seat, and the locking spring seat is sleeved on the guide rod through a threaded structure and limited at the end part of the other end of the over travel spring. By adopting the technical scheme, the over-travel spring is fastened by the locking spring seat to realize compression in the installation process, the installation mode of a special tool is not needed, the assembly process is simplified, the assembly is convenient, the cost is saved, the installation efficiency is improved, the required installation space is small, the tightness of the over-travel spring is adjusted by moving the locking spring seat on the guide rod, and the initial pressure of the over-travel spring is convenient to adjust.
Description
Technical Field
The invention relates to the technical field of medium-high voltage electric appliances, in particular to an over-travel spring mounting structure for an insulating pull rod.
Background
The vacuum arc-extinguishing chamber is a core component of the medium-high voltage power switch, and an electric arc generated in the breaking process of a moving contact and a fixed contact in the vacuum arc-extinguishing chamber can be extinguished rapidly, so that accidents and accidents are avoided. Referring to fig. 4, a moving guide 102 with a moving contact 103 is extended to the outside of the arc extinguishing chamber 101, and the moving contact 103 is driven by an operating mechanism.
In order to reduce the contact resistance between the movable contact 103 and the fixed contact 104 as much as possible and maintain stability and good mechanical strength when the arc extinguishing chamber bears a dynamic and stable current, the movable guide rod 102 and the operating mechanism are connected through an insulating pull rod 105. The existing insulation pull rod 105 mainly comprises a pull rod body connected with the movable guide rod, a guide rod and an over-travel spring arranged between the pull rod body and the guide rod; the over-travel spring is arranged to enable the rated pressure to be kept between the two contacts, so that reliable contact pressure is provided for switching on the moving contact and the fixed contact, and the moving contact and the fixed contact of the vacuum arc-extinguishing chamber are enabled to be kept in stable contact in a switching-on state.
When the over-travel spring is installed, the over-travel spring is required to be installed in a spring groove of the insulating pull rod according to design requirements. Because the design force value of the over-travel spring is larger, the over-travel spring can be installed only after being compressed by a special tool. The installation process is as follows: firstly, the over-travel spring is sleeved on a guide rod of an insulating pull rod and is placed in a spring groove, then a special tool (pneumatic tool) for assembling is matched, the over-travel spring is compressed to a certain extent by starting the special tool, then a limiting pin penetrates into the outer end of the guide rod extending out of the over-travel spring to be used for connecting a sliding sleeve integrally connected with a movable guide rod and limiting the compressed over-travel spring at the same time, and the limiting pin is riveted or clamped, so that the installation of the over-travel spring is realized.
According to the installation structure, the existing over-travel spring installation mode is that the over-travel spring is compressed by means of a special tool and then assembled, the compression assembly is arranged at the outer end of the over-travel spring, the required installation space is large, the assembly process is complex, the assembly is difficult, the installation efficiency is low, the structure is limited in the practical application process, the initial pressure adjustment of the over-travel spring is difficult, and the adjustment of the opening over-travel of a movable contact and a static contact is inconvenient.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems that the installation mode of the over-travel spring in the prior art needs to compress and then assemble by means of a special tool, the required installation space is large, the assembly is difficult, the installation efficiency is low, and the initial pressure adjustment is difficult, so that the over-travel spring installation structure for the insulating pull rod, which is simple to assemble, small in required installation space, capable of improving the installation efficiency and convenient for adjusting the initial pressure, does not need to use a special tool, is provided.
In order to solve the above technical problems, the present invention provides an over-travel spring mounting structure for an insulation pull rod, comprising:
a guide rod;
the guide spring seat is connected with the guide rod through a connecting structure and can slide in a set distance along the axial direction relative to the guide rod;
the over-travel spring is sleeved on the guide rod along the axial direction of the guide rod, one end, close to the guide spring seat, of the guide spring seat is propped against the guide spring seat, and the connecting structure is arranged in the over-travel spring;
the locking spring seat is sleeved on the guide rod through a thread structure and limited at the end part of the other end of the over travel spring, and the over travel spring can be locked when the locking spring seat moves along the axial direction of the guide rod.
As a preferred aspect, the locking spring seat includes:
the spring seat body is sleeved on the guide rod in a sliding way and close to the over-travel spring and is in abutting fit with the over-travel spring;
the threaded piece is sleeved on the guide rod on one side, far away from the over-travel spring, of the spring seat body through the threaded structure and is in abutting fit with the spring seat body.
As a preferable scheme, the locking spring seat is a shaft sleeve structure sleeved on the guide rod, a threaded structure matched with the guide rod is arranged on the inner hole wall of the shaft sleeve structure, and a protruding structure extending outwards in the radial direction to limit the over-travel spring is arranged on the periphery of the shaft sleeve structure.
As a preferable scheme, a thread structure matched with the thread structure of the locking spring seat is arranged on the periphery of the guide rod along the axial set distance.
As a preferable scheme, a sliding shaft hole is formed in one end, facing the guide rod, of the guide spring seat, and the end of the guide rod is slidably arranged in the sliding shaft hole.
As a preferred scheme, the connecting structure comprises a guide chute arranged at one end of the guide rod and a through hole correspondingly arranged on the side wall of the sliding shaft hole, and a guide protrusion arranged between the guide chute and the through hole, wherein the guide chute extends along the axial direction of the guide rod for a set distance, and the guide protrusion penetrates through the guide chute.
As a preferable scheme, the guide chute penetrates through the chute structure at the end part of the guide rod, the guide protrusion is a connecting pin penetrating through a through hole in the side wall of the sliding shaft hole and the chute structure, and two ends of the connecting pin respectively lean against the over-travel spring inner ring or are fixedly connected with the guide spring seat.
As a preferable mode, both ends of the connecting pin are spherical, and the pitch of the over travel spring is smaller than the diameter of the end face of the connecting pin.
As a preferred scheme, the connecting structure comprises a through hole arranged at one end of the guide rod and a guide chute correspondingly arranged on the side wall of the sliding shaft hole, and a guide protrusion arranged between the guide chute and the through hole, wherein the guide chute extends along the axial direction of the sliding shaft hole for a set distance, and the guide protrusion penetrates through the through hole.
As a preferable scheme, a limiting protrusion opposite to the locking spring seat is formed on the periphery of the guide rod, and the limiting protrusion is used for limiting the moving distance of the locking spring seat on the guide rod.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. according to the over-travel spring mounting structure for the insulating pull rod, the guide spring seat and the guide rod are slidably connected through the connecting structure, the over-travel spring is sleeved on the guide rod along the axial direction of the guide rod and accommodates the connecting structure, the locking spring seat is sleeved on the guide rod through the threaded structure and is matched with the guide spring seat to be fastened at two ends of the over-travel spring in opposite directions, the mounting process of the over-travel spring is completed, and the over-travel spring can exert pressure on the guide spring seat when the guide rod slides towards the guide spring seat within the set axial distance, so that reliable contact pressure is provided for closing of a vacuum arc extinguishing chamber. By adopting the technical scheme, the guide spring seat and the guide rod are connected inside the over-travel spring through the connecting structure, the required installation space is small, the structure is compact, the compression is realized by fastening the locking spring seat in the installation process of the over-travel spring, the self-locking property of the threaded structure is utilized, the over-travel spring is not required to be installed by a special tool, the assembly process is simplified, the assembly is convenient, the cost is saved, and the installation efficiency is greatly improved. And moreover, the tightness of the over-travel spring is adjusted by moving the locking spring seat on the guide rod, so that the initial pressure of the over-travel spring is conveniently adjusted, the over-travel opening distance of the contact in the vacuum arc-extinguishing chamber is conveniently adjusted, and the maintenance is convenient.
2. According to the over-travel spring mounting structure for the insulating pull rod, the locking spring seat comprises the spring seat body and the threaded piece, the spring seat body is matched and abutted against one end of the over-travel spring, the threaded piece slides back and forth on the guide rod through the threaded structure and pushes the spring seat body to slide along the guide rod when moving towards one end of the over-travel spring, one end of the over-travel spring is fastened by the spring seat body, compression can be achieved in the mounting process of the over-travel spring according to the design requirement of a force value, the compression and the assembly process of the over-travel spring are completed synchronously reasonably, and the assembly process is simpler, more convenient and more reliable.
3. In the over-travel spring mounting structure for the insulating pull rod, the arrangement mode of the locking spring seat is not unique, the locking spring seat can also be a shaft sleeve structure sleeved on the guide rod, a protruding structure arranged on the periphery of the locking spring seat is used for limiting the over-travel spring, namely, the protruding structure is matched with and props against one end of the over-travel spring, and the shaft sleeve structure slides back and forth on the guide rod along a threaded structure, so that the over-travel spring is tightly compressed in the sliding process of the shaft sleeve structure close to one end of the shaft sleeve structure, the assembly of the over-travel spring is realized, the free adjustment is carried out according to the design requirement of a force value, and the operation is convenient.
4. According to the over-travel spring mounting structure for the insulation pull rod, the guide sliding groove penetrates through the sliding groove structure at the end part of the guide rod, the guide protrusion is a connecting pin penetrating through the through hole in the side wall of the sliding shaft hole and the sliding groove structure, so that the effect of connecting the guide rod and the guide spring seat is achieved, two ends of the connecting pin extending out of the sliding groove structure are respectively connected into the two through holes in the side wall of the sliding shaft hole, the connecting pin is positioned, then the sliding fit between the sliding groove structure and the connecting pin provides a movement guiding effect for the end part of the guide rod in the sliding shaft hole, namely, the guide rod slides back and forth along the axial direction between the guide rod and the sliding shaft hole, so that the guide rod is prevented from deflecting and shaking in the sliding shaft hole, and the fit is stable and reliable.
5. In the over-travel spring mounting structure for the insulation pull rod, two ends of the connecting pin respectively prop against the inner ring of the over-travel spring, and the pitch of the over-travel spring is smaller than the diameter of the end face of the connecting pin.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic view of an over travel spring mounting structure for an insulated pull rod according to the present invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of the over travel spring mounting structure of FIG. 1;
FIG. 3 is a schematic view of a partial cross-sectional view of the over-travel spring mounting structure of FIG. 1 in another direction;
fig. 4 is a schematic view of a mounting structure of a vacuum interrupter and an operating mechanism according to the prior art;
reference numerals illustrate: the device comprises a 1-guide rod, a 11-end part, a 12-guide chute, a 13-limit protrusion, a 2-guide spring seat, a 21-sliding shaft hole, a 3-over travel spring, a 4-locking spring seat, a 41-spring seat body, a 42-threaded piece and a 5-connecting pin.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown.
In the description of the present invention, it should be noted that the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
The present embodiment is specifically described below with reference to the accompanying drawings:
this embodiment provides an over travel spring mounting structure for an insulating tie rod as shown in fig. 1-3, comprising: the device comprises a guide rod 1, a guide spring seat 2, an over travel spring 3 and a locking spring seat 4; one end of the guide spring seat 2 is used for connecting a movable guide rod, and the other end of the guide spring seat is connected with the guide rod 1 through a connecting structure and can slide in a set distance along the axial direction relative to the guide rod 1; the over-travel spring 3 is sleeved on the guide rod 1 along the axial direction of the guide rod 1, one end, close to the guide spring seat 2, of the over-travel spring is propped against the guide spring seat 2, and the connecting structure is arranged in the over-travel spring 3;
the locking spring seat 4 is sleeved on the guide rod 1 through a threaded structure and limited at the end part of the other end of the over travel spring 3, and the over travel spring 3 can be locked when the locking spring seat moves along the axial direction of the guide rod.
In the above embodiment, the mounting process for the over-travel spring is as follows: the over-travel spring 3 can apply pressure to the guide spring seat 2 when the guide rod slides towards the guide spring seat in the axial set distance, so that reliable contact pressure is provided for closing the vacuum arc-extinguishing chamber. Adopt this technical scheme, guide spring seat 2 and guide bar 1 pass through connection structure and realize connecting in the inside of overtravel spring 3, and required installation space is little, compact structure, overtravel spring 3 is realized compressing by locking spring seat fastening in the installation, utilizes the self-locking of helicitic texture, need not to install the overtravel spring with the help of special frock again, has simplified assembly process, and the equipment is convenient, practices thrift the cost, very big improvement installation effectiveness, and, through locking spring seat 4 moves the elasticity of adjusting the overtravel spring on the guide bar, is convenient for adjust the initial pressure of overtravel spring to the overtravel distance of contact in the convenient regulation vacuum interrupter, it is convenient to maintain.
In this embodiment, a side of the guiding spring seat 2 away from the guiding rod is connected with a moving guide rod of the vacuum arc-extinguishing chamber, and a moving contact is installed at an end of the moving guide rod entering the vacuum arc-extinguishing chamber. The guide rod 1 is driven by an operating mechanism, and the movable contact and the fixed contact in the vacuum arc-extinguishing chamber are driven to act through the guide spring seat 2 and the movable guide rod, so that opening and closing are realized. Meanwhile, the over-travel spring 3 applies pressure to the guide spring seat under the action of the guide rod, so that reliable contact pressure is provided for closing of the vacuum arc-extinguishing chamber, the movable contact and the fixed contact of the vacuum arc-extinguishing chamber can be kept in stable contact in a closing state, and the over-travel opening distance of the movable contact and the fixed contact can be adjusted by adjusting the initial pressure of the over-travel spring.
The specific structure of the locking spring seat is described in detail below in conjunction with fig. 1-3:
the locking spring seat 4 includes a spring seat body 41 and a screw 42; the spring seat body 41 is arranged close to the over-travel spring 3, can be sleeved on the guide rod in a sliding manner, and can be matched and abutted against one end of the over-travel spring; the screw member 42 is sleeved on the guide rod on one side of the spring seat body 41 far away from the over travel spring 3 through the screw structure, and is in abutting fit with the spring seat body 41. The threaded member 42 is selected as an adjustment nut. The periphery of the guide rod 1 is provided with a threaded part matched with the threaded structure of the locking spring seat 4 along the axial set distance, in the above arrangement mode, the threaded part 42 slides reciprocally on the guide rod 1 in a threaded connection mode, and pushes the spring seat body 41 to slide along the guide rod when sliding towards one end of the over-travel spring 3, one end of the over-travel spring is fastened by the spring seat body 41, compression can be realized in the installation process of the over-travel spring according to the design requirement of force value, the compression and the assembly process of the over-travel spring are completed synchronously reasonably, and the assembly process is simpler, more convenient and reliable.
As an alternative embodiment, the locking spring seat 4 is a sleeve structure sleeved on the guide rod, a threaded structure matched with the guide rod 1 is disposed on an inner hole wall of the sleeve structure, a protruding structure extending radially outwards to limit the over travel spring 3 is disposed on the periphery of the sleeve structure, that is, one end of the over travel spring abuts against the protruding structure of the sleeve structure, and the other end of the over travel spring abuts against the guide spring seat. The shaft sleeve structure slides reciprocally on the guide rod along the thread structure, so that the over-travel spring 3 is fastened and compressed in the process that the shaft sleeve structure slides near one end of the shaft sleeve structure, the assembly of the over-travel spring is realized, and the over-travel spring is freely adjusted according to the design requirement of force values, and the operation is convenient. Obviously, the setting mode of the locking spring seat 4 in this embodiment is not unique, for example, a threaded screw connected to the guide rod in a threaded manner may also be used, one end of the threaded screw extends radially outwards to form a limiting end face for limiting the over-travel spring, and the compression process of the over-travel spring is realized by extruding the over-travel spring 3 in the axial sliding process of the threaded screw along the guide rod. Those skilled in the art can select the specific setting manner of the locking spring seat according to the above description, and other equivalent embodiments of the locking spring seat will not be described in detail herein.
According to the above embodiment, as shown in fig. 1, the guide spring seat 2 is provided with a sliding shaft hole 21 towards one end of the guide rod 1, the end 11 of the guide rod 1 is slidably disposed in the sliding shaft hole 21, in this embodiment, the axial length range of the sliding shaft hole 21 is defined within the axial set distance, and the guide rod 1 can compress and pre-tighten the over-travel spring when sliding in the sliding shaft hole 21, so as to meet the transmission connection requirement between the guide rod 1 and the guide spring seat, and ensure that a rated pressure is maintained between two contacts of the vacuum arc extinguishing chamber. Wherein, slip shaft hole 21 part and guide bar 1 tip all hold in the inside of overtravel spring 3 reduces the installation space, reasonable in design, the cooperation is reliable.
The connection structure of this embodiment is specifically described below with reference to fig. 1 to 3:
the connecting structure comprises a guide chute 12 arranged at one end of the guide rod 1, a through hole correspondingly arranged on the side wall of the sliding shaft hole 21, and a guide protrusion arranged between the guide chute 12 and the through hole, wherein the guide chute 12 extends along the axial direction of the guide rod 1 by a set distance, the guide protrusion penetrates through the guide chute, and the set distance of the extension of the guide chute 12 limits the slidable distance of the end part of the guide rod relative to the guide protrusion. The structure is provided with the function of connecting the guide rod and the guide spring seat, and the end part of the guide rod can play a role of moving and guiding in the sliding shaft hole.
As a deformable manner of the foregoing embodiment, the connection structure includes a through hole provided at one end of the guide rod 1, a guide chute 12 correspondingly provided at a side wall of the sliding shaft hole 21, and a guide protrusion provided between the guide chute 12 and the through hole, wherein the guide chute 12 extends axially along the sliding shaft hole 21 for a set distance, and the guide protrusion penetrates through the through hole. The above-mentioned concrete setting positions through changing direction spout 12 and through-hole can play sliding connection's effect equally, and the setting mode is various, and cooperation connection is reliable and stable, and the person skilled in the art can select connection structure's concrete setting mode according to the description above, and then will not be repeated here to other equivalent embodiments one by one.
As shown in fig. 2-3, the guide chute 12 is a chute structure penetrating through the end of the guide rod 1, the chute structure is in a strip shape, two opposite through holes are formed in the side wall of the sliding shaft hole 21 corresponding to the chute structure, the guide protrusion is a connecting pin 5 penetrating through the through hole in the side wall of the sliding shaft hole 21 and the chute structure, two ends of the connecting pin 5 respectively abut against the inner ring of the over-travel spring, or two ends of the connecting pin 5 are fixedly connected with the guide spring seat 2, the arrangement mode is not unique, the functions of connecting the guide rod and the guide spring seat can be achieved, and two axial ends of the connecting pin are positioned to prevent the connecting pin from falling out of the through hole and the chute structure, so that the end of the guide rod 1 is provided with a motion guiding function in the sliding shaft hole through sliding fit between the chute structure and the connecting pin, namely, the guide rod is prevented from deflecting and swinging in the sliding shaft hole 21 along the axial direction back and forth between the guide rod 1 and the sliding shaft hole, and the fit is stable and reliable.
According to the above embodiment, as shown in fig. 1, the two ends of the connecting pin 5 are spherical, the pitch of the over-travel spring 3 is smaller than the diameter of the end face of the connecting pin 5, the over-travel spring is preferably a column-shaped pressure spring, so that the two ends of the connecting pin 5 are in sliding contact with the inner ring of the over-travel spring, the blocking phenomenon is avoided, the connecting pin 5 for connecting the guide rod 1 and the guide spring seat 2 is arranged in the over-travel spring 3, a limit effect is directly achieved on the connecting pin through the inner diameter and the pitch of the over-travel spring, the connecting pin is not required to be fixed by riveting, the connecting pin 5 can be prevented from falling out of the chute structure and the through hole, the assembly process is simplified, the installation is convenient, and the installation efficiency is improved. Obviously, the positioning and mounting of the connecting pin 5 in this embodiment is not limited to the implementation of the positioning and mounting by the two ends abutting against the inner ring of the over travel spring 3, but also the fixed connection of the two ends of the connecting pin and the guiding spring seat 2 may be adopted, specifically, the two ends of the connecting pin 5 may be clamped or riveted through the through hole on the side wall of the guiding spring seat 2, so that the two ends of the connecting pin 5 may be positioned and not abutted against the inner ring of the over travel spring, so as to ensure that the connecting pin 5 plays a role in connecting between the guiding rod 1 and the guiding spring seat 2. Those skilled in the art can select the specific arrangement manner of the connection pin 5 according to the above description, and other equivalent embodiments will not be described in detail herein.
Further preferably, a limiting protrusion 13 opposite to the locking spring seat 4 is formed on the outer periphery of the guide rod 1, and the limiting protrusion 13 is used for limiting the moving distance of the locking spring seat 4 on the guide rod 1, so as to avoid excessive extrusion on the over-travel spring, control the over-travel spring within a reasonable range, and ensure reliable matching. The over-travel spring mounting structure can be applied to an insulating pull rod or other driving rods, can be matched with a movable guide rod of a vacuum arc-extinguishing chamber to transfer pressure, and provides reliable contact pressure for switching on a movable contact and a movable contact of the vacuum arc-extinguishing chamber.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (7)
1. An over travel spring mounting structure for an insulating tie rod, comprising:
a guide rod (1);
one end of the guide spring seat (2) is used for connecting a movable guide rod, the other end of the guide spring seat is connected with the guide rod (1) through a connecting structure and can slide in a set distance along the axial direction relative to the guide rod (1), a sliding shaft hole (21) is formed in one end of the guide spring seat (2) facing the guide rod (1), and an end part (11) of the guide rod (1) can be slidably arranged in the sliding shaft hole (21);
the over-travel spring (3) is sleeved on the guide rod (1) along the axial direction of the guide rod (1), one end, close to the guide spring seat (2), of the guide spring seat is propped against the guide spring seat (2), and the connecting structure is arranged inside the over-travel spring (3);
the locking spring seat (4) is sleeved on the guide rod (1) through a thread structure and is limited at the end part of the other end of the over-travel spring (3), and the over-travel spring (3) can be locked when the locking spring seat moves along the axial direction of the guide rod;
the connecting structure comprises a guide chute (12) arranged at one end of the guide rod (1), a through hole correspondingly arranged on the side wall of the sliding shaft hole (21), and a guide protrusion arranged between the guide chute (12) and the through hole, wherein the guide chute (12) axially extends along the guide rod (1) for a set distance, and the guide protrusion penetrates through the guide chute;
or, the connection structure comprises a through hole arranged at one end of the guide rod (1) and a guide chute correspondingly arranged on the side wall of the sliding shaft hole (21), and a guide protrusion arranged between the guide chute and the through hole, wherein the guide chute extends for a set distance along the axial direction of the sliding shaft hole, and the guide protrusion penetrates through the through hole.
2. The over-travel spring mounting structure for an insulated tension rod according to claim 1, wherein the locking spring seat (4) includes:
the spring seat body (41) is sleeved on the guide rod in a sliding way and close to the over-travel spring (3) and is in abutting fit with the over-travel spring (3);
the screw member (42) is sleeved on the guide rod on one side, far away from the over travel spring, of the spring seat body (41) through the screw structure, and is in abutting fit with the spring seat body (41).
3. The over-travel spring mounting structure for an insulated tension rod according to claim 1, wherein: the locking spring seat (4) is of a shaft sleeve structure sleeved on the guide rod (1), the inner hole wall of the shaft sleeve structure is provided with a threaded structure matched with the guide rod (1), and the periphery of the shaft sleeve structure is provided with a protruding structure extending outwards in the radial direction to limit the over-travel spring (3).
4. An over travel spring mounting structure for an insulated drawbar according to claim 2 or 3, characterized in that: the periphery of the guide rod (1) is provided with a threaded part matched with the threaded structure of the locking spring seat (4) along the axial set distance.
5. The over-travel spring mounting structure for an insulated tension rod according to claim 1, wherein: the guide chute (12) penetrates through the chute structure at the end part of the guide rod (1), the guide protrusion is a through hole penetrating through the side wall of the sliding shaft hole (21) and a connecting pin (5) in the chute structure, and two ends of the connecting pin (5) respectively lean against the inner ring of the over-travel spring (3) or are fixedly connected with the guide spring seat (2).
6. The over-travel spring mounting structure for an insulated tension rod according to claim 5, wherein: the two ends of the connecting pin (5) are spherical, and the pitch of the over-travel spring (3) is smaller than the diameter of the end face of the connecting pin (5).
7. The over-travel spring mounting structure for an insulated tension rod according to claim 1, wherein: the periphery of the guide rod (1) is provided with a limiting protrusion (13) opposite to the locking spring seat (4), and the limiting protrusion (13) is used for limiting the moving distance of the locking spring seat (4) on the guide rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810259891.0A CN108320954B (en) | 2018-03-27 | 2018-03-27 | Over-travel spring mounting structure for insulating pull rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810259891.0A CN108320954B (en) | 2018-03-27 | 2018-03-27 | Over-travel spring mounting structure for insulating pull rod |
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| Publication Number | Publication Date |
|---|---|
| CN108320954A CN108320954A (en) | 2018-07-24 |
| CN108320954B true CN108320954B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810259891.0A Active CN108320954B (en) | 2018-03-27 | 2018-03-27 | Over-travel spring mounting structure for insulating pull rod |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206468A (en) * | 2015-10-22 | 2015-12-30 | 林代湘 | Circuit breaker capable of conveniently adjusting opening range and contacting travel |
| KR20170000049A (en) * | 2015-06-22 | 2017-01-02 | 현대중공업 주식회사 | Driving mechanism of vaccum circuit breaker |
| CN207909751U (en) * | 2018-03-27 | 2018-09-25 | 浙江华仪电器科技有限公司 | A kind of excess of stroke spring mounting structure for insulated tension pole |
-
2018
- 2018-03-27 CN CN201810259891.0A patent/CN108320954B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170000049A (en) * | 2015-06-22 | 2017-01-02 | 현대중공업 주식회사 | Driving mechanism of vaccum circuit breaker |
| CN105206468A (en) * | 2015-10-22 | 2015-12-30 | 林代湘 | Circuit breaker capable of conveniently adjusting opening range and contacting travel |
| CN207909751U (en) * | 2018-03-27 | 2018-09-25 | 浙江华仪电器科技有限公司 | A kind of excess of stroke spring mounting structure for insulated tension pole |
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| Publication number | Publication date |
|---|---|
| CN108320954A (en) | 2018-07-24 |
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