CN112589732A - Transformer tap screw elasticity instrument - Google Patents
Transformer tap screw elasticity instrument Download PDFInfo
- Publication number
- CN112589732A CN112589732A CN202011388639.3A CN202011388639A CN112589732A CN 112589732 A CN112589732 A CN 112589732A CN 202011388639 A CN202011388639 A CN 202011388639A CN 112589732 A CN112589732 A CN 112589732A
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- CN
- China
- Prior art keywords
- handle
- transformer tap
- tap screw
- sleeve
- tool according
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention relates to the technical field of auxiliary tools for taps of transformers, in particular to a tool for loosening and tightening screws for taps of transformers, which comprises a force application part, a connecting part and a fixing part, wherein the force application part, the connecting part and the fixing part are sequentially connected from top to bottom and are used for enabling the whole tool to rotate, the force application part is a handle which is symmetrically arranged relative to the central axis of the connecting part, and the handle is of a telescopic structure. The invention aims to overcome the defects of the prior art and provides a tool which can drive a screw to rotate by applying force to a handle through two hands simultaneously so as to achieve screw fastening, on one hand, the stress in the screw fastening process can be balanced, the phenomenon of locking is not easy to generate, and on the other hand, the screw can be rotated in a labor-saving manner.
Description
Technical Field
The invention relates to the technical field of auxiliary tools for taps of transformers, in particular to a tool for loosening and tightening screws of taps of transformers.
Background
The tap switch of the transformer is used for regulating the output voltage of the transformer (commonly called as a gear), because the voltages at all places in the power grid of the power system are not completely the same, in order to ensure that the transformer can output rated voltage no matter where the transformer is arranged on the power grid, a plurality of taps are arranged on the high-voltage winding of the transformer and connected to the tap switch, the turn ratio of the high-voltage winding and the low-voltage winding of the transformer can be changed by connecting the tap switch with different taps of the transformer winding, thereby achieving the purpose of regulating the output voltage of the transformer. The tap has two types of no-load regulation and load regulation, wherein the former can only regulate the position of a tap switch after the transformer is disconnected from a power grid, and the latter can regulate the position of the tap during the operation of the transformer. When oil leakage is found, the oil leakage is prevented by fastening the tap switch screw. The tap switch screw is designed to be circular, the diameter of the tap switch screw is 55mm, two sides of the tap switch screw are symmetrically cut into a straight line, when the tap switch screw is fastened, due to the fact that no proper tool is provided, only a large wrench can be used, when connecting wires on the high side and the low side appear, the large wrench does not have a proper position for clamping the screw, only a straight screwdriver is used for placing the screw to the side edge of the screw, the screw is fastened by a hammering method, and the screw is prone to deformation and damage in a hammering process.
Chinese patent CN204505109U discloses a transformer pressure regulating tap allotypic box spanner, rotates the sleeve and then adjusts tap switch screw through utilizing shaft-like handle, but it mainly carries out the application of force through the handle unilateral in the use and realizes rotatoryly, leads to the uneven emergence dislocation of screw fastening process atress to lead to the card to die easily on the one hand, and on the other hand one-hand operation is not convenient for staff's application of force and then has increased the operation degree of difficulty.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a tool which can drive a screw to rotate by applying force to a handle through two hands simultaneously so as to achieve screw fastening, on one hand, the stress in the screw fastening process can be balanced, the phenomenon of locking is not easy to generate, and on the other hand, the screw can be rotated in a labor-saving manner.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a transformer tap screw elasticity instrument, include from the last application of force portion, connecting portion, the fixed part that down connects gradually that is used for making whole instrument rotatory, application of force portion is for about the handle that connecting portion axis symmetry set up, the handle is extending structure.
The fixing part is used for fixing a screw of a transformer tap, the force application part drives the fixing part to rotate through the connecting part so as to fasten or loosen the screw, the handle is a force application object, the connecting part and the fixing part rotate through applying force to the handle, the telescopic structure is used for avoiding other parts on the transformer tap conveniently in the rotating process so as to avoid interference, the handle can be extended at a place which does not need to be avoided so as to increase the force arm, the labor-saving effect can be achieved, the handle can be held conveniently and operated conveniently, the handle is shortened at a place which needs to be avoided so as to pass through the handle smoothly, and then the rotating operation is carried out until the fastening and the loosening of the screw are realized.
Preferably, the handle comprises a sleeve with a hollow cavity, and a loop bar movably sleeved in the sleeve and capable of moving back and forth along the length direction of the sleeve, and the sleeve is fixedly connected with the connecting part.
Preferably, a handle is further connected to the end of the loop bar.
Preferably, the handle is provided with an anti-slip unit.
Preferably, the anti-slip unit is an anti-slip line or an anti-slip bump.
Preferably, the cross-sectional area of the handle is greater than the cross-sectional area of the stem.
Preferably, the number of the handles is two or four.
Preferably, the connecting portion includes two crossbeams that cross the setting, locate two crossbeams below respectively and four supporting beams rather than being connected, the sleeve with crossbeam fixed connection.
Preferably, the connecting portion is a cylindrical shell provided with a hollow cavity, one end of the cylindrical shell is open, the connecting portion is close to the open end and connected with the fixing portion, and the connecting portion is far away from the open end and connected with the handle.
Preferably, the fixing part is a snap ring.
Compared with the prior art, the invention has the beneficial effects that:
(1) the screw driver is provided with a plurality of handles, and the handles can be simultaneously applied with force to drive the screw to rotate, so that the screw is uniformly stressed in the rotating process, the risk of locking the screw is reduced, and the labor is saved;
(2) the operation is convenient, and the possibility of damage of the screw in the fastening or loosening process is reduced;
(3) the telescopic handle can avoid other parts on the transformer tap in the process of rotating the screw, and interference is avoided.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment 1 of a tap screw tightening tool of a transformer according to the present invention;
FIG. 2 is a schematic structural diagram of an embodiment 2 of a tap screw tightening tool of a transformer according to the present invention;
the graphic symbols are illustrated as follows:
1. a force application part; 11. a handle; 111. a sleeve; 112. a loop bar; 113. a handle; 2. a connecting portion; 21. a cross beam; 22. a support beam; 3. a fixed part; 31. a snap ring.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Example 1
Fig. 1 shows a first embodiment of a transformer tap screw tightening and loosening tool according to the present invention, which includes a force application portion 1, a connection portion 2, and a fixing portion 3 connected in sequence from top to bottom for rotating the whole tool, wherein the force application portion 1 is a handle 11 symmetrically disposed about a central axis of the connection portion 2, and the handle 11 is of a telescopic structure.
As an embodiment of the present invention, the handle 11 may be telescopically moved in a lengthwise direction. Different from the principle of a red wine bottle opener which moves in an arc telescopic way, the red wine bottle opener realizes the tightness of a tap screw through the rotation of the handle 11, and the handle 11 which can be stretched in a linear direction can prolong the force arm as far as possible in a place with enough space, thereby realizing the effect of saving labor.
As an embodiment of the present invention, the handle 11 includes a sleeve 111 having a hollow cavity, and a sleeve rod 112 movably sleeved in the sleeve 111 and capable of moving back and forth along a length direction of the sleeve 111, wherein the sleeve 111 is fixedly connected to the connecting portion 2. The sleeve 111 provides a back-and-forth telescopic track for the loop bar 112, so that the loop bar 112 can move back and forth in the length direction of the sleeve 111, and the length direction stretching is realized. Here, the sleeves 111 may be matched with the number of the loop bars 112 and arranged correspondingly, each loop bar 112 is movable in the respective sleeve 111, the sleeves 111 may also be shared, two symmetrical loop bars 112 share one sleeve 111, and the loop bars 112 are respectively arranged at two ends of the sleeve 111 and move back and forth along the length direction of the sleeve 111.
In one embodiment of the present invention, a handle 113 is further connected to an end of the loop bar 112. The handle 113 can facilitate force application, and a worker applies force to the handle 113 to make the loop bar 112 move telescopically along with the handle 113.
In one embodiment of the present invention, the grip 113 is provided with an anti-slip means. The anti-slip unit can increase the friction force of the handle 113, thereby facilitating grasping and applying force.
As one embodiment of the present invention, the anti-slip unit is an anti-slip pattern or an anti-slip bump. The anti-slip lines can be continuous straight lines or wavy lines arranged along the circumferential direction or the axial direction of the handle and other shapes, or can be a plurality of independent convex points, or can be semicircular convex points, so that the friction force of the handle is increased.
As one embodiment of the present invention, the cross-sectional area of the handle 113 is larger than that of the loop bar 112. The size of the loop bar 112 needs to be matched with the sleeve 111, so the sleeve 111 needs to be arranged smaller, the cross-sectional area of the handle 113 is larger than that of the loop bar 112, and the loop bar 112 can be conveniently pulled out when the loop bar 112 is completely retracted into the sleeve 111.
As one embodiment of the present invention, there are two handles 11. The two handles 11 are symmetrically arranged to form a straight line, so that two hands can hold and apply force at the same time, and uniform stress on the screw is facilitated.
In one embodiment of the present invention, the connecting portion 2 includes two cross beams 21 arranged to cross each other, and four support beams 22 respectively arranged below the two cross beams 21 and connected thereto, and the sleeve 111 is fixedly connected to the cross beams 21. Connecting portion 2 is as the part of connecting handle 11 and fixed part 3, still realizes the transmission function simultaneously, and two crossbeams 21 that set up alternately and four spinal branch supporting beam 22 that set up in crossbeam 21 bottom can make when the application of force to handle 11, evenly transmit the application of force to the week of fixed part 3 through four spinal branch supporting beam 22, make the screw atress that is pressed from both sides tightly by fixed part 3 even, be convenient for fasten or loosen to and avoid the atress inequality to lead to rotating the in-process screw dislocation card extremely.
In one embodiment of the present invention, the fixing portion 3 is a snap ring 31. Snap ring 31 can carry out the adaptation through inside shape and screw to reach the effect that makes the screw follow fixed part 3 rotations at the in-process of twist grip 11, also can increase a plurality of elastic bayonet pins or wholly set up the fastening of elasticity jump ring further realization to the screw in snap ring 31 is inside, prevents that fixed part 3 from breaking away from the screw at rotatory in-process, leads to handle 11 can't drive the screw and realizes the rotatory fastening that causes the instrument inefficacy unable realization screw and the function of loosening.
Example 2
Referring to fig. 2, a second embodiment of a transformer tap screw tightening tool according to the present invention is similar to embodiment 1 except that four handles 11 are provided. The four handles 11 are vertical two by two, that is, the four handles are on one plane, and two adjacent handles are vertically arranged. Can carry out the application of force to different handles 11 when fixed part 3 rotates to different angles, further promote the convenience of operation.
As an embodiment of the present invention, the connecting portion 2 is a cylindrical housing having a hollow cavity, one end of the cylindrical housing is open, the connecting portion 2 is connected to the fixing portion 3 near the open end, and the connecting portion 2 is connected to the handle 11 far from the open end. Connecting portion 2 forms a whole, and is similar to the bell jar and wholly covers on fixed part 3, can be convenient for evenly transmit the application of force that comes from handle 11 on the one hand, and on the other hand can be fixed the screw top through setting up support column etc. in connecting portion 2 middle part, increases the fastening to the screw, is convenient for make the screw follow fixed part 3 and rotate.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a transformer tap screw elasticity instrument which characterized in that includes from the top down connect gradually be used for making rotatory application of force portion (1), connecting portion (2), fixed part (3) of whole instrument, application of force portion (1) is for about handle (11) that connecting portion (2) axis symmetry set up, handle (11) are extending structure.
2. The transformer tap screw tightening tool according to claim 1, wherein the handle (11) comprises a sleeve (111) provided with a hollow cavity, and a sleeve rod (112) movably sleeved in the sleeve (111) and capable of moving back and forth along the length direction of the sleeve (111), wherein the sleeve (111) is fixedly connected with the connecting portion (2).
3. The transformer tap screw loosening and tightening tool according to claim 2, wherein a handle (113) is further connected to the end of the shank (112).
4. A transformer tap screw loosening and tightening tool according to claim 3, wherein an anti-slip unit is provided on the handle (113).
5. The transformer tap screw loosening and tightening tool of claim 4, wherein the anti-slip unit is an anti-slip thread or an anti-slip bump.
6. The transformer tap screw loosening and tightening tool according to claim 5, wherein the cross-sectional area of the handle (113) is larger than the cross-sectional area of the stem (112).
7. The transformer tap screw loosening tool according to any one of claims 1 to 6, wherein the number of handles (11) is two or four.
8. The transformer tap screw tightening tool according to claim 7, wherein the connection portion (2) comprises two cross beams (21) arranged in a crossing manner, four support beams (22) respectively arranged below the two cross beams (21) and connected with the two cross beams, and the sleeve (111) is fixedly connected with the cross beams (21).
9. The transformer tap screw loosening and tightening tool according to claim 7, wherein the connection part (2) is a cylindrical housing with a hollow cavity, one end of the cylindrical housing is open, the connection part (2) is connected to the fixing part (3) near the open end, and the connection part (2) is connected to the handle (11) far from the open end.
10. The transformer tap screw loosening and tightening tool according to claim 7, wherein the fixing portion (3) is a snap ring (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388639.3A CN112589732A (en) | 2020-12-02 | 2020-12-02 | Transformer tap screw elasticity instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011388639.3A CN112589732A (en) | 2020-12-02 | 2020-12-02 | Transformer tap screw elasticity instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112589732A true CN112589732A (en) | 2021-04-02 |
Family
ID=75187687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011388639.3A Pending CN112589732A (en) | 2020-12-02 | 2020-12-02 | Transformer tap screw elasticity instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112589732A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102366943A (en) * | 2011-08-19 | 2012-03-07 | 王吴光 | Integral lathe chuck wrench capable of freely adjusting length of stress application rod |
| CN202572241U (en) * | 2012-06-06 | 2012-12-05 | 柘城县供电有限责任公司 | Special spanner for transformer tap switch |
| CN202701409U (en) * | 2012-07-10 | 2013-01-30 | 江苏省常州技师学院 | Built-in adsorption-type chuck key |
| CN203228206U (en) * | 2013-05-16 | 2013-10-09 | 国家电网公司 | Transformer maintenance combined tool |
| CN203831331U (en) * | 2014-05-26 | 2014-09-17 | 国家电网公司 | Handling tool for tapping switch of distribution transformer |
| CN204711917U (en) * | 2015-05-22 | 2015-10-21 | 嘉兴市恒欣电力建设有限公司 | A kind of Special spanner for transformer tap switch |
| CN205033130U (en) * | 2015-09-14 | 2016-02-17 | 国网冀北电力有限公司张家口供电公司 | Join in marriage net transformer tapping switch special spanner |
| CN108326788A (en) * | 2018-04-20 | 2018-07-27 | 国电江苏电力有限公司谏壁发电厂 | A kind of Telescopic wrench |
-
2020
- 2020-12-02 CN CN202011388639.3A patent/CN112589732A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102366943A (en) * | 2011-08-19 | 2012-03-07 | 王吴光 | Integral lathe chuck wrench capable of freely adjusting length of stress application rod |
| CN202572241U (en) * | 2012-06-06 | 2012-12-05 | 柘城县供电有限责任公司 | Special spanner for transformer tap switch |
| CN202701409U (en) * | 2012-07-10 | 2013-01-30 | 江苏省常州技师学院 | Built-in adsorption-type chuck key |
| CN203228206U (en) * | 2013-05-16 | 2013-10-09 | 国家电网公司 | Transformer maintenance combined tool |
| CN203831331U (en) * | 2014-05-26 | 2014-09-17 | 国家电网公司 | Handling tool for tapping switch of distribution transformer |
| CN204711917U (en) * | 2015-05-22 | 2015-10-21 | 嘉兴市恒欣电力建设有限公司 | A kind of Special spanner for transformer tap switch |
| CN205033130U (en) * | 2015-09-14 | 2016-02-17 | 国网冀北电力有限公司张家口供电公司 | Join in marriage net transformer tapping switch special spanner |
| CN108326788A (en) * | 2018-04-20 | 2018-07-27 | 国电江苏电力有限公司谏壁发电厂 | A kind of Telescopic wrench |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210402 |
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| RJ01 | Rejection of invention patent application after publication |