CN203831354U - Spiral spring replacing tool - Google Patents
Spiral spring replacing tool Download PDFInfo
- Publication number
- CN203831354U CN203831354U CN201420268895.2U CN201420268895U CN203831354U CN 203831354 U CN203831354 U CN 203831354U CN 201420268895 U CN201420268895 U CN 201420268895U CN 203831354 U CN203831354 U CN 203831354U
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- China
- Prior art keywords
- shaped
- clamping plates
- helical spring
- depressed part
- spring
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- Expired - Fee Related
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- 230000000994 depressogenic effect Effects 0.000 claims description 31
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000008602 contraction Effects 0.000 description 6
- 230000003068 static effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- Springs (AREA)
Abstract
The utility model discloses a spiral spring replacing tool which comprises two clamping plates, four bolts and four nuts. U-shaped notches are formed in the clamping plates, U-shaped concave portions are arranged on one sides of the clamping plates, half U-shaped concave portions are arranged on the other sides of the clamping plates, and locking faces are arranged at the ends, located in the middles of the U-shaped notches, of the half U-shaped concave portions. The U-shaped notches are embedded into spring wire clearances at the two ends of a spiral spring, the bottom faces of the U-shaped concave portions and the bottom faces of the half U-shaped concave portions abut against a spring wire, the locking faces abut against the end face of the spring wire, the free ends of the four bolts correspondingly penetrate through four through holes of the two clamping plates respectively, and the spiral spring is compressed through screw-in of nuts at the free ends of the bolts. The two clamping plates of the spiral spring replacing tool are close constantly through screw-in of the nuts, the compressed spiral spring is forced to continue to shrink until the two ends of the spiral spring are separated from blocking structures, and the spiral spring replacing tool and the spiral tool can be together taken out of a mounting structure safely and conveniently at this moment.
Description
Technical field
The utility model relates to a kind of spring and changes instrument, relates in particular to a kind of helical spring and changes instrument.
Background technology
Spring is widely used in industry and daily life field as a kind of Flexible Connector.The spring that some coefficient of elasticity are large (coefficient of elasticity is larger, and decrement or the elongation of unit force are less, and elastic force is larger) is also inconvenient when to its disassembling, assembling and replacing.For example, GW7 type isolating switch main switch is arranged on eminence conventionally, Fig. 1 shows the internal structure of GW7 type isolating switch main switch, a static contact 2 has been installed in rectangular box inside, static contact is connected with wall box by piston rod 4 axially movable mode in cylinder body 3, static contact 2 is rotationally connected with bearing pin 5 with the free end of cylinder body 3, the free end of casing and piston rod 4 is rotationally connected with bearing pin 5, a helical spring 1 that coefficient of elasticity is larger has been installed on cylinder body 3, to hold out against static contact 2 by helical spring 1, now helical spring 1 is in compressive state.Conventionally have two kinds of methods to change helical spring 1, a kind of is that the bearing pin 5 that connects static contact 2 and cylinder body 3 is directly pulled down, and the defect of this method is that cylinder body 3 can eject with very large speed under the effect of spring force, easily hurts sb.'s feelings; Another kind is to utilize a crowbar, crowbar is inserted in the gap of helical spring 1 spring silk, then firmly prizing helical spring 1 makes it to shrink, the defect of this method is because the restriction of body structure cannot be found a stable fulcrum, and the space of operation is less, owing to belonging to work high above the ground, if crowbar sled is empty, staff has the danger from falling from high altitude.Therefore how by the helical spring safety, the replacing fast that are similar to GW7 type isolated switch main brake structure, to be, those skilled in the art's urgent problems.
Utility model content
For the defect that in the helical spring process changing larger coefficient of elasticity, prior art exists, the utility model provides a kind of helical spring simple in structure to change instrument, and this helical spring is changed instrument can change the helical spring with larger coefficient of elasticity safely, fast.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of helical spring is changed instrument, comprising: two clamping plates that are oppositely arranged, four bolts and four nuts; On every described clamping plate, all offer U-shaped otch, a relative side of two described clamping plates has the U-shaped depressed part forming along the outer rim of described U-shaped otch, opposite side has along described U-shaped otch outer and originates from half U-shaped depressed part that one end that described U-shaped otch is positioned at open side to the middle part of described U-shaped otch forms, and one end that described half U-shaped depressed part is positioned at described U-shaped otch middle part is formed with stop surface; The described U-shaped otch of two described clamping plates embeds respectively in Huang Si gap, described helical spring two ends, described U-shaped depressed part and described half U-shaped depressed part and described spring silk against, and the end face of the end of described spring silk and described stop surface against, two described clamping plates be positioned at described U-shaped otch outside respectively correspondence offer four through holes, the free end of described four bolts is corresponding four through holes through two described clamping plates respectively, and force helical spring to compress by being arranged on the screw-in of the nut on each bolt free end.
Preferably, described bolt is hex bolts, and the side that penetrates that four through holes of described clamping plate are positioned at described bolt offers the hexagon stop counterbore that stops described hex bolts to rotate.
Preferably, described U-shaped otch is positioned at described U-shaped depressed part one side and offers chamfering.
Compared with prior art, the beneficial effect of helical spring replacing instrument of the present utility model is:
The U-shaped otch of two clamping plates embeds respectively in the spring silk gap at helical spring two ends, four bolts are connected two clamping plates with four nuts, by continuous screw-in nut, force two clamping plates constantly close, the bottom surface of the U-shaped depressed part of two clamping plates is tight against spring silk, the helical spring of drive in contraction state continues to shrink, until helical spring two ends depart from, make its barrier structure in contraction state, the instrument of now helical spring can being changed is safety, taking-up easily from mounting structure together with helical spring; For preventing that two clamping plates from driving in helical spring contraction process, self rotates helical spring, the stop surface of half U-shaped depressed part end formation and the end face of spring silk end are tight against, and stop surface can effectively stop helical spring self to rotate, and have increased the stability of operation.Therefore, compared to existing technology in directly dismounting and change or the mode changed by crowbar, utilize helical spring to change instrument and can change safely, fast the helical spring with larger coefficient of elasticity.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of existing GW7 type isolating switch main switch;
Fig. 2 is the structural representation that helical spring of the present utility model is changed clamping plate one side of instrument;
Fig. 3 is the structural representation that helical spring of the present utility model is changed the clamping plate opposite side of instrument;
Fig. 4 is that helical spring of the present utility model is changed the helical spring use view of tool changing.
The specific embodiment
For making those skilled in the art better understand the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As Figure 2-3, an embodiment of the present utility model discloses a kind of helical spring and has changed instrument, comprising: two clamping plates that are oppositely arranged 6, four bolts 7 and four nuts 8; On every clamping plate 6, all offer U-shaped otch 67, a relative side of two clamping plates 6 has the U-shaped depressed part 61 forming along the outer rim of U-shaped otch 67, its opposite side has and along described U-shaped otch 67 outer, originates from one end that half U-shaped depressed part 64 of U-shaped depressed part 64, half that one end that U-shaped otch 67 is positioned at open side to the middle part of U-shaped otch 67 forms is positioned at U-shaped otch 67 middle parts and be formed with stop surface 66; The U-shaped otch 67 of two clamping plates 6 embeds respectively in helical spring 1 Huang Si gap, two ends, U-shaped depressed part 61 and half U-shaped depressed part 64 respectively with spring silk against, and the end face of the end of spring silk and described stop surface 66 against, the outside that is positioned at U-shaped otch 67 on two clamping plates 6 respectively correspondence offers four through holes 62, the free end of four bolts 7 is corresponding four through holes 62 through two clamping plates 6 respectively, and force helical spring 1 compression by being arranged on the screw-in of the nut 8 on each bolt 7 free end.Two clamping plates 6 are made by steel plate, the degree of depth of the thickness of steel plate, U-shaped depressed part 61 and half U-shaped depressed part 64 is determined by radius and the lead angle of the spring silk of the helical spring 1 of clamping, the degree of depth of U-shaped depressed part 61 and half U-shaped depressed part 64 is more preferably greater than the radius of spring silk, so that spring silk can better embed in U-shaped depressed part 61 and half U-shaped depressed part 64, and the stop surface 66 of half U-shaped depressed part 64 end can with the disc mostly of the end face of spring silk end against.In the situation that spring filament diameter is certain, the helical spring 1 that lift angle is larger, the gap between its spring silk is larger, and for preventing that clamping plate 6 from rocking when clamping, clamping plate 6 needs to adopt thicker steel plate.
With reference to figure 4, and continue with reference to figure 2-3, when using helical spring of the present utility model to change tool changing helical spring 1, the U-shaped otch 67 of two clamping plates 6 embeds first respectively in the spring silk gap at helical spring 1 two ends, the spring silk that makes both sides, gap respectively with U-shaped depressed part 61, half U-shaped depressed part 64 against, four bolts 7 are connected two clamping plates 6 with four nuts 8, by continuous screw-in nut 8, force two clamping plates 6 constantly close, the U-shaped depressed part 61 of two clamping plates 6 is tight against spring silk, the helical spring 1 of drive in contraction state continues to shrink, until departing from, helical spring 1 two ends make its barrier structure in contraction state, the instrument of now helical spring can being changed together with helical spring 1 from mounting structure safety, take out easily, for preventing that two clamping plates 6 from driving in helical spring 1 contraction process, helical spring 1 rotates self, the stop surface 66 of half U-shaped depressed part 64 ends formation is tight against with the end face of spring silk end, and stop surface 66 can effectively stop helical spring 1 self to rotate, and has increased the stability of operation.Therefore, compared to existing technology in directly dismounting and change or the mode changed by crowbar, utilize helical spring to change instrument and can change safely, fast the helical spring 1 with larger coefficient of elasticity.
Should be appreciated that, the scope of application that helical spring of the present utility model is changed instrument is limited by its design feature and principle, can not think and be only applicable to change the helical spring in GW7 type isolating switch main switch.
For preventing in screwing nut process, bolt 7 rotates with nut 8, bolt 7 is selected hex bolts, and on four through holes 62 of bolt 7 inserting sides of a clamping plate 6, offer hexagon stop counterbore 65 therein, the nuts by restriction hex bolts rotates to stop bolt 7 to rotate with nut 8.
For can smoothly U-shaped otch 67 being inserted in helical spring 1 Huang Si gap, two ends, increase helical spring 1 and change instrument operability, U-shaped otch 67 is positioned at U-shaped depressed part 61 1 sides and offers a chamfering 63.
Claims (3)
1. helical spring is changed an instrument, it is characterized in that, comprising: two clamping plates that are oppositely arranged, four bolts and four nuts; On every described clamping plate, all offer U-shaped otch, a relative side of two described clamping plates has the U-shaped depressed part forming along the outer rim of described U-shaped otch, opposite side has along described U-shaped otch outer and originates from half U-shaped depressed part that one end that described U-shaped otch is positioned at open side to the middle part of described U-shaped otch forms, and one end that described half U-shaped depressed part is positioned at described U-shaped otch middle part is formed with stop surface; The described U-shaped otch of two described clamping plates embeds respectively in Huang Si gap, described helical spring two ends, described U-shaped depressed part and described half U-shaped depressed part and described spring silk against, and the end face of the end of described spring silk and described stop surface against, two described clamping plates be positioned at described U-shaped otch outside respectively correspondence offer four through holes, the free end of described four bolts is corresponding four through holes through two described clamping plates respectively, and force helical spring to compress by being arranged on the screw-in of the nut on each bolt free end.
2. helical spring according to claim 1 is changed instrument, it is characterized in that, described bolt is hex bolts, and the side that penetrates that four through holes of described clamping plate are positioned at described bolt offers the hexagon stop counterbore that stops described hex bolts to rotate.
3. helical spring according to claim 1 is changed instrument, it is characterized in that, described U-shaped otch is positioned at described U-shaped depressed part one side and offers chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420268895.2U CN203831354U (en) | 2014-05-23 | 2014-05-23 | Spiral spring replacing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420268895.2U CN203831354U (en) | 2014-05-23 | 2014-05-23 | Spiral spring replacing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203831354U true CN203831354U (en) | 2014-09-17 |
Family
ID=51509242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420268895.2U Expired - Fee Related CN203831354U (en) | 2014-05-23 | 2014-05-23 | Spiral spring replacing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203831354U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106335021A (en) * | 2016-10-13 | 2017-01-18 | 重庆长安工业(集团)有限责任公司 | Multi-purpose buffer spring mounting and dismounting tool |
| CN106837665A (en) * | 2015-12-03 | 2017-06-13 | 上海电气风电设备有限公司 | A kind of gear case elastic support for ocean current power generation unit |
-
2014
- 2014-05-23 CN CN201420268895.2U patent/CN203831354U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837665A (en) * | 2015-12-03 | 2017-06-13 | 上海电气风电设备有限公司 | A kind of gear case elastic support for ocean current power generation unit |
| CN106335021A (en) * | 2016-10-13 | 2017-01-18 | 重庆长安工业(集团)有限责任公司 | Multi-purpose buffer spring mounting and dismounting tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 |