CN210550908U - Stud disassembling tool - Google Patents
Stud disassembling tool Download PDFInfo
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- CN210550908U CN210550908U CN201920986169.7U CN201920986169U CN210550908U CN 210550908 U CN210550908 U CN 210550908U CN 201920986169 U CN201920986169 U CN 201920986169U CN 210550908 U CN210550908 U CN 210550908U
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- nut
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Abstract
The utility model relates to the technical field of disassembling and assembling tools, a stud disassembling and assembling tool is provided, which comprises a first nut for connecting a stud by screw threads, a second nut which is arranged on the first nut along the rotating shaft of the first nut and is coaxial with the first nut, and a pushing bolt which is coaxially connected with the second nut by screw threads and is used for increasing the static friction force between the first nut and the stud, wherein the pushing bolt is used for moving along the rotating shaft of the first nut to push and separate from the end part of the stud in the first nut; the utility model provides a double-screw bolt assembly and disassembly tools has following advantage: the pushing bolt is pushed against the end part of the stud, the pushing force between the external thread of the stud and the internal thread of the first nut is increased, the static friction force between the stud and the first nut is further increased, a maintainer can easily rotate the stud by using tools such as a spanner and the like by increasing the static friction force, the mounting and dismounting difficulty of the stud is reduced, and the working time is saved.
Description
Technical Field
The utility model relates to an assembly and disassembly tools technical field, more specifically say, relate to a double-screw bolt assembly and disassembly tools.
Background
When the valve of the nuclear power station is inspected and maintained, the stud on the valve body needs to be detached, and the valve body needs to be reassembled after the inspection and maintenance work is finished. The stud has the characteristics that: the lower half part of the stud is connected with the valve body through threads, namely the stud is planted, but the upper half part of the stud exposed out of the valve body is not provided with a bolt head, so that the stud is difficult to disassemble and assemble relative to the bolt.
The general disassembling method of the stud comprises the following steps: the operating personnel wear gloves, hold the double-screw bolt tightly, utilize frictional force to back out or screw the double-screw bolt, realize the dismouting of double-screw bolt.
In the conventional disassembling and assembling method, there are many disadvantages and problems: (1) the operator needs to use larger holding force to achieve enough friction force to disassemble the stud, so that the labor intensity is high, and particularly, when the size of the stud is larger or the friction force between the stud and the valve body is larger, the labor intensity needs to be strengthened; (2) the stud is manually rotated, when the stud is rotated to a certain angle, the stud needs to be loosened and then held tightly, and the operation efficiency is low; (3) in a nuclear power station, a plurality of studs are in a radioactivity control area, radioactive substances may exist on the surfaces of the studs, an operator wears gloves to directly contact the studs, radioactive materials may be transferred to the gloves and hands of the operator, and the possibility that the operator is contaminated by radioactivity is high; in addition, the screw thread on the stud is sharper, and is sharper especially when the screw thread is damaged, so that gloves and even hand skin can be scratched, and radioactive internal pollution is caused; (4) the operation efficiency is low, the consumed time is long, and the irradiated dose value of the operator is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a double-screw bolt assembly and disassembly tools, including the first nut that is used for the threaded connection double-screw bolt, follow the axis of rotation of first nut set up in on the first nut and with the coaxial second nut of first nut, and coaxial threaded connection the second nut is and be used for increasing first nut with static friction between the double-screw bolt supports and pushes away the bolt, support and push away the bolt and be used for following the axis of rotation of first nut removes in order to support and pushes away the double-screw bolt is located tip in the first nut.
Further, the inner diameter of the first nut is larger than or equal to the inner diameter of the second nut.
Further, the direction of the internal thread of the first nut is matched with that of the stud, and the direction of the internal thread of the first nut is opposite to that of the internal thread of the second nut.
Further, the stud disassembling tool further comprises a connecting ring fixed on the first nut, the connecting ring is coaxial with the first nut, and the connecting ring is used for connecting the second nut to the first nut.
Further, the inner diameter of the connecting ring is larger than the outer diameter of the pushing bolt.
Further, the second nut may be detachably coupled to the connection ring.
Further, a fixing groove is formed in the connecting ring, and the second nut is embedded in the fixing groove.
Further, the stud disassembling tool further comprises a third nut which is connected to the pushing bolt in a threaded mode and can move along the rotating shaft, and the third nut is used for pushing the second nut to fix the second nut.
Further, the first nut, the second nut and the third nut are all hexagon nuts.
Further, a bolt head is arranged at the end part, far away from the first nut, of the push bolt.
The utility model provides a double-screw bolt assembly and disassembly tools's beneficial effect lies in:
the bolt is fixed on the upper half part of a stud to be installed or disassembled through the first nut, the abutting bolt moves towards the end part of the stud until the abutting bolt abuts against and pushes the end part of the stud, abutting force between the external thread of the stud and the internal thread of the first nut is increased, static friction force between the stud and the first nut is further increased, a maintainer can easily rotate the stud by using tools such as a spanner and the like through increasing the static friction force, the installing and disassembling difficulty of the stud is reduced, and working time is saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a stud disassembling tool according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a stud disassembly and assembly tool provided by an embodiment of the present invention;
fig. 3 is a schematic view illustrating a stud disassembling tool according to an embodiment of the present invention for disassembling a stud;
fig. 4 is a schematic view illustrating a stud disassembling tool according to an embodiment of the present invention for disassembling a stud;
fig. 5 is a schematic view illustrating a stud disassembling tool according to an embodiment of the present invention for disassembling a stud;
fig. 6 is a schematic view of a stud assembling and disassembling tool provided by an embodiment of the present invention for installing a stud;
fig. 7 is a schematic view of a stud assembling and disassembling tool provided by an embodiment of the present invention for installing a stud;
fig. 8 is a schematic view of a stud mounting/dismounting tool according to an embodiment of the present invention.
The figures are numbered:
| |
1 | |
32 | |
36 |
| Valve |
2 | |
33 | |
37 |
| |
3 | Connecting |
34 | ||
| |
31 | |
35 |
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention, and are not intended to indicate that a device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as indicating a number of technical features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The following describes the specific implementation of the present invention in more detail with reference to specific embodiments:
as shown in fig. 1 and fig. 2, the embodiment of the utility model provides a pair of double-screw bolt assembly and disassembly tools, this double-screw bolt assembly and disassembly tools are used for dismantling double-screw bolt 1, and it is including but not limited to being fixed in double-screw bolt 1 on valve body 2, on the latter half screw thread of this double-screw bolt 1 is fixed in valve body 2, its first half exposes in valve body 2 for carry out threaded connection with other parts, because two tip of double-screw bolt 1 do not set up the bolt head, consequently the dismantlement degree of difficulty of double-screw bolt 1 is great.
The stud disassembling tool 3 provided by the embodiment comprises a first nut 31, a second nut 32 and a pushing bolt 33;
the first nut 31 is used for connecting the stud 1 in a threaded manner, and the first nut 31 is rotated through the friction force between the first nut 31 and the stud 1 so as to detach the stud 1 from the valve body 2;
the second nut 32 is provided on the first nut 31 along the rotational axis of the first nut 31 and is coaxial with the first nut 31;
the pushing bolt 33 is in threaded connection with the second nut 32 and is arranged coaxially with the second nut 32, the pushing bolt 33 is used for increasing static friction force between the first nut 31 and the stud 1, the pushing bolt 33 can move along a rotating shaft of the first nut 31 to extend into and withdraw from the interior of the first nut 31, and then the pushing bolt 33 pushes and disengages from the end portion, located in the first nut 31, of the stud 1.
The working principle of the stud disassembling tool 3 of the present embodiment is as follows:
as shown in fig. 3 to 5, the stud 1 is disassembled: screwing the first nut 31 into the upper half part of the stud 1, screwing the abutting bolt 33 while fixing the first nut 31 by a wrench, so that the end part of the abutting bolt 33 extending into the first nut 31 abuts against the end part of the stud 1 positioned in the first nut 31, and the abutting bolt 33 abuts against the bolt 33, so that the external thread of the stud 1 is combined with the internal thread of the first nut 31 more tightly, the static friction force between the stud 1 and the first nut 31 is increased, the first nut 31 is rotated by the wrench, the stud 1 is relatively fixed with the first nut 31 due to the static friction force, and the first nut 31 drives the stud 1 to rotate until the stud 1 is separated from the valve body 2;
as shown in fig. 6 to 8, the mounting stud 1: inserting the lower half part of a stud 1 to be installed on a valve body 2, screwing a first nut 31 into the upper half part of the stud 1, fixing the first nut 31 by using a wrench, simultaneously screwing a pushing bolt 33, enabling the end part of the pushing bolt 33 extending into the first nut 31 to be tightly attached to the end part of the stud 1 positioned in the first nut 31, enabling the pushing bolt 33 to be pushed against the bolt 33, enabling the external thread of the stud 1 to be combined with the internal thread of the first nut 31 more tightly, increasing the static friction force between the stud 1 and the first nut 31, further rotating the first nut 31 by using the wrench, enabling the stud 1 to be relatively fixed with the first nut 31 due to the static friction force, and enabling the first nut 31 to drive the stud 1 to rotate until the stud 1 is completely screwed into the valve body 2;
the stud disassembling tool 3 provided by the embodiment has the beneficial effects that:
the bolt fixing structure comprises a first nut 31, a pushing bolt 33, a second nut 31, a bolt 1, a first nut 31, a second nut 31, a third nut 31, a fourth nut 31, a fifth nut 31, a sixth nut, a fifth nut, a sixth nut, a fifth nut, a sixth nut, a.
Further, as a specific implementation manner of the stud disassembling tool 3 provided in the embodiment of the present invention, the inner diameter of the first nut 31 is greater than or equal to the inner diameter of the second nut 32, and the inner diameter of the first nut 31 is greater than the inner diameter of the second nut 32, so that the pushing bolt 33 can extend into the inside of the second nut 32 and push against the end of the stud 1 located in the second nut 32; in addition, the first nut 31 has a larger size, so that the stud disassembling tool 3 of the present embodiment can disassemble the stud 1 having a larger size.
Further, as a specific implementation manner of the stud disassembling tool 3 provided by the embodiment of the present invention, the direction of the internal thread of the first nut 31 is matched with the stud 1, and the direction of the internal thread of the first nut 31 is opposite to the direction of the internal thread of the second nut 32. By setting the internal thread directions of the first nut 31 and the second nut 32 to opposite directions, that is, the screwing direction of the first nut 31 is opposite to the screwing direction of the second nut 32, when the pushing bolt 33 is already pushed against the stud 1, when a maintainer rotates the first nut 31, the second nut 32 is driven to push the bolt 33 to separate from the stud 1, so that the static friction between the stud 1 and the first nut 31 is reduced, and the stud 1 cannot be rotated normally.
Further, as a specific implementation manner of the stud disassembling tool 3 provided by the embodiment of the present invention, the stud disassembling tool 3 further includes a connection ring 34 fixed on the first nut 31, the connection ring 34 is coaxial with the first nut 31, and the connection ring 34 is used for connecting the second nut 32 to the first nut 31. By providing the connection ring 34 between the first nut 31 and the second nut 32, the difference in inner diameter between the first nut 31 and the second nut 32 can be made large, that is, even if the inner diameter of the first nut 31 is larger than the outer diameter of the second nut 32, the first nut 31 and the second nut 32 can be connected by the connection ring 34, so that the stud disassembly and assembly tool 3 of the present embodiment can be applied to a stud 1 of a larger size.
Further, as the embodiment of the utility model provides a stud assembly and disassembly tools 3's a specific implementation, the internal diameter of go-between 34 is greater than the external diameter that supports and push away bolt 33, makes to support through this design and pushes away bolt 33 and can pass through go-between 34, avoids the internal diameter undersize of go-between 34, causes to block to support and pushes away bolt 33.
Further, as a specific implementation of the stud disassembly and assembly tool 3 provided by the embodiment of the present invention, the second nut 32 is detachably connected to the connection ring 34, that is, the second nut 32 and the first nut 31 can be detached from each other, and by this design, the first nuts 31 of different sizes can be replaced according to the studs 1 of different sizes, thereby improving the applicability of the stud disassembly and assembly tool 3 of the present embodiment.
Further, as a specific implementation manner of the stud disassembling tool 3 according to the embodiment of the present invention, a fixing groove 37 is provided on the connection ring 34, and the second nut 32 is embedded in the fixing groove 37.
Further, as a specific implementation manner of the stud disassembling tool 3 provided by the embodiment of the present invention, the stud disassembling tool 3 further includes a third nut 35 that is screwed to the pushing bolt 33 and can move along the rotation axis, and the third nut 35 is used for pushing the second nut 32 to fix the second nut 32. The third nut 35 moves towards the second nut 32 until abutting against the second nut 32, the static friction between the second nut 32 and the abutting bolt 33 is increased by the abutting force exerted on the second nut 32 by the third nut 35, so that the second nut 32 is not easy to move relative to the abutting bolt 33, and meanwhile, the problem that the abutting bolt 33 is separated from the stud 1 due to the relative movement between the second nut 32 and the abutting bolt 33 when a maintainer rotates the first nut 31, and the stud 1 cannot be rotated normally due to the fact that the abutting bolt 33 is separated from the stud 1 is avoided.
Further, as a specific implementation manner of the stud disassembling tool 3 provided by the embodiment of the present invention, the first nut 31, the second nut 32, and the third nut 35 are all hexagon nuts. Through the design of this hexagonal head nut, the maintainer of being convenient for chooses for use general instrument to rotate first nut 31, second nut 32 and third nut 35, utilizes and uses ordinary spanner to rotate above-mentioned nut, has improved the convenience of the double-screw bolt assembly and disassembly tools 3 of this embodiment.
Further, as a specific implementation manner of the stud disassembling tool 3 provided by the embodiment of the present invention, the end of the pushing bolt 33 away from the first nut 31 is provided with a bolt head 36. The bolt head 36 and the abutting bolt 33 are designed integrally, so that a maintainer can directly use a tool to rotate the abutting bolt 33, and the convenience of the stud disassembling tool 3 of the embodiment is also improved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a double-screw bolt assembly and disassembly tools which characterized in that: the bolt comprises a first nut used for being in threaded connection with a stud, a second nut which is arranged on the first nut along a rotating shaft of the first nut and is coaxial with the first nut, and a pushing bolt which is in coaxial threaded connection with the second nut and is used for increasing static friction between the first nut and the stud, wherein the pushing bolt is used for moving along the rotating shaft of the first nut so as to push an end part of the stud in the first nut.
2. The stud disassembly tool of claim 1, wherein: the inner diameter of the first nut is larger than or equal to that of the second nut.
3. The stud disassembly tool of claim 1, wherein: the direction of the internal thread of the first nut is matched with that of the stud, and the direction of the internal thread of the first nut is opposite to that of the internal thread of the second nut.
4. The stud disassembly tool of claim 1, wherein: the stud disassembly and assembly tool further comprises a connecting ring fixed on the first nut, the connecting ring is coaxial with the first nut, and the connecting ring is used for connecting the second nut to the first nut.
5. The stud disassembly tool of claim 4, wherein: the inner diameter of the connecting ring is larger than the outer diameter of the abutting bolt.
6. The stud disassembly tool of claim 4, wherein: the second nut is detachably coupled to the connection ring.
7. The stud disassembly tool of claim 6, wherein: the connecting ring is provided with a fixing groove, and the second nut is embedded in the fixing groove.
8. The stud disassembly tool of any one of claims 1-6, wherein: the stud disassembling tool further comprises a third nut which is connected to the pushing bolt in a threaded mode and can move along the rotating shaft, and the third nut is used for pushing the second nut to fix the second nut.
9. The stud disassembly tool of claim 8, wherein: the first nut, the second nut and the third nut are all hexagon nuts.
10. The stud disassembly tool of any one of claims 1-6, wherein: the end part of the pushing bolt far away from the first nut is provided with a bolt head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920986169.7U CN210550908U (en) | 2019-06-26 | 2019-06-26 | Stud disassembling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920986169.7U CN210550908U (en) | 2019-06-26 | 2019-06-26 | Stud disassembling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210550908U true CN210550908U (en) | 2020-05-19 |
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ID=70668301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920986169.7U Active CN210550908U (en) | 2019-06-26 | 2019-06-26 | Stud disassembling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210550908U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114833772A (en) * | 2022-04-14 | 2022-08-02 | 北京新风航天装备有限公司 | Quick installation frock of double-screw bolt |
-
2019
- 2019-06-26 CN CN201920986169.7U patent/CN210550908U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114833772A (en) * | 2022-04-14 | 2022-08-02 | 北京新风航天装备有限公司 | Quick installation frock of double-screw bolt |
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