CN220994310U

CN220994310U - Round nut screwing tool

Info

Publication number: CN220994310U
Application number: CN202322760443.8U
Authority: CN
Inventors: 王震; 周鹏; 吕晨腾; 石凯; 张振
Original assignee: Huaneng Shandong Shidaobay Nuclear Power Co Ltd
Current assignee: Huaneng Shandong Shidaobay Nuclear Power Co Ltd
Priority date: 2023-10-16
Filing date: 2023-10-16
Publication date: 2024-05-24
Anticipated expiration: 2033-10-16

Abstract

The application provides a round nut screwing tool, which is provided with a poking hole on the side surface of a round nut, and comprises: a limiting pin and a sleeve. One end of the limiting pin is used for being plugged into the poking hole; the sleeve is provided with a first axial end and a second axial end, the first end is sleeved on the round nut, the second end is connected with the electric torque wrench, and the sleeve can circumferentially rotate under the action of the electric torque wrench; wherein, spacer pin and sleeve are constructed to be can spacing cooperation to the sleeve can be in circumference rotation in-process to spacer pin transmission moment of torsion, thereby make round nut realize precession/unscrewing. The round nut screwing tool provided by the embodiment of the application can be assembled on the round nut and can be connected with an electric torque wrench, so that the round nut can be assembled and disassembled through the electric torque wrench. Compared with the current mode of assembling and disassembling round nuts by using a poking rod, the round nut screwing tool can be used for assembling and disassembling round nuts, so that the workload can be reduced, and the assembling and disassembling efficiency can be improved.

Description

Round nut screwing tool

Technical Field

The application relates to the technical field of assembly, in particular to a round nut screwing tool.

Background

The main nut of the top cover of the main helium fan of the high-temperature gas cooled reactor and the main nut of the cylinder are M90 round nuts. In the process of assembling and disassembling the round nuts, a poking rod or a hand-rotating operation is usually adopted. However, the round nuts have smaller space and limited operation space, and the single round nut can be assembled and disassembled only by rotating about 25 circles, so that the workload of poking rods or hand screwing is large, and the time consumption is long. In addition, when the length of the poking rod is larger than the distance between the round nuts, the poking rod position needs to be continuously replaced in the process of assembling and disassembling the round nuts, which can lead to further increase of the workload.

Disclosure of utility model

The embodiment of the application at least provides a round nut screwing tool, which can solve the problems of large workload and long time consumption when the round nut is assembled and disassembled currently.

The embodiment of the application provides a round nut screwing tool, which is provided with a poking hole on the side surface of a round nut, and comprises:

one end of the limiting pin is used for being plugged into the poking hole;

The sleeve is provided with a first axial end and a second axial end, the first end is used for being sleeved on the round nut, and the second end is used for being connected with an electric torque wrench;

Wherein the stop pin and the sleeve are configured for a stop fit such that the sleeve transmits torque to the stop pin.

In an alternative embodiment, the sleeve has a detent that allows the stop pin to be placed therein to positively engage the stop pin with the sleeve.

In an alternative embodiment, the first end of the sleeve is provided with an opening, which communicates with the clamping groove.

In an alternative embodiment, the sleeve defines the slot through its thickness.

In an alternative embodiment, the sleeve has a plurality of the clamping grooves, and the clamping grooves are distributed at intervals along the circumferential direction of the sleeve.

In an alternative embodiment, the second end of the sleeve is provided with a hexagonal nut, by means of which the sleeve is connected to the electric torque wrench.

In an alternative embodiment, the sleeve has an inner cavity for receiving the round nut, the radius of the inner cavity corresponding to the radius of the round nut.

In an alternative embodiment, one end of the limiting pin plugged into the poking hole is conical.

In an alternative embodiment, the side of the limit pin is provided with a groove which allows the wall of the sleeve to be placed therein to prevent the limit pin from exiting the poking hole.

In an alternative embodiment, the groove is arranged along the circumference of the limit pin.

The technical scheme of the application has the following beneficial technical effects:

The round nut screwing tool provided by the embodiment of the application can be assembled on the round nut and can be connected with an electric torque wrench, so that the round nut can be assembled and disassembled through the electric torque wrench. Compared with the current mode of assembling and disassembling round nuts by using a poking rod, the round nut screwing tool can be used for assembling and disassembling round nuts, so that the workload can be reduced, and the assembling and disassembling efficiency can be improved.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are necessary for the embodiments to be used are briefly described below, the drawings being incorporated in and forming a part of the description, these drawings showing embodiments according to the present application and together with the description serve to illustrate the technical solutions of the present application. It is to be understood that the following drawings illustrate only certain embodiments of the application and are therefore not to be considered limiting of its scope, for the person of ordinary skill in the art may admit to other equally relevant drawings without inventive effort.

FIG. 1 is a schematic diagram showing the operation of a related art round nut screwed by a poking rod;

Fig. 2 is a schematic structural view of a round nut screwing tool according to an embodiment of the present application;

Fig. 3 is a schematic structural view of a limiting pin according to an embodiment of the present application;

FIG. 4 is a schematic view showing the installation of a stop pin according to an embodiment of the present application;

FIGS. 5-6 illustrate the assembly process of the round nut screwing tool provided by the embodiment of the application;

In the figure, 10, a round nut; 11. hole pulling; 20. a poking stick; 30. a limiting pin; 31. a groove; 40. a sleeve; 41. a clamping groove; 42. an opening; 43. a connection structure; 44. and (5) sealing the cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings.

It should be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application pertains. The use of the terms "first," "second," and the like in one or more embodiments of the present description does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In the related art, the top cover main nut and the barrel main nut of the main helium fan of the high-temperature gas cooled reactor are M90 round nuts. In the process of assembling and disassembling the round nuts, a poking rod or a hand-rotating operation is usually adopted. However, the round nuts have smaller space and limited operation space, and the single round nut can be assembled and disassembled only by rotating about 25 circles, so that the workload of poking rods or hand screwing is large, and the time consumption is long. In addition, when the length of the poking rod is larger than the distance between the round nuts, the poking rod position needs to be continuously replaced in the process of assembling and disassembling the round nuts, which can lead to further increase of the workload.

Therefore, the embodiment of the application provides a round nut screwing tool, which can solve the problems of limited operation space, large workload and long time consumption when the round nut is assembled and disassembled currently.

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the following detailed description thereof will be made with reference to the accompanying drawings and examples.

Fig. 1 is a schematic diagram showing the operation of screwing a round nut using a poking rod in the related art.

Referring to fig. 1, fig. 1 shows that the side of the round nut 10 has a poking hole 11 for inserting a poking bar 20.

Referring to fig. 1, in some examples, the number of the dial holes 11 is plural, and the plurality of dial holes 11 are spaced apart along the circumferential direction of the round nut 10. In this case, the round nut 10 can be continuously rotated by changing the position of the setting roller 20 during the process of attaching and detaching the round nut 10, and the situation that the round nut 10 cannot be attached and detached due to the limitation of the operation space can be avoided.

Fig. 2 is a schematic structural view of a round nut screwing tool according to an embodiment of the present application; fig. 3 is a schematic structural view of a limiting pin according to an embodiment of the present application; FIG. 4 is a schematic view showing the installation of a stop pin according to an embodiment of the present application; fig. 5 to 6 show an assembly process of the round nut screwing tool according to the embodiment of the present application.

Referring to fig. 2, 5 and 6 together, a round nut screwing tool according to an embodiment of the present application includes: a stop pin 30 and a sleeve 40. One end of the limiting pin 30 is used for being plugged into the poking hole 11. The sleeve 40 has an axial first end for being fitted over the round nut 10 and a second end for being connected to an electric torque wrench, the sleeve 40 being capable of rotating circumferentially under the action of the electric torque wrench. Wherein the stop pin 30 and the sleeve 40 are configured for a stop fit such that the sleeve 40 is capable of transmitting torque to the stop pin 30 during circumferential rotation to effect the unscrewing/screwing-in of the round nut 10. In use, the round nut screwing tool can be assembled to the round nut 10 and can connect the round nut 10 to an electric torque wrench, thereby enabling the round nut 10 to be assembled and disassembled by the electric torque wrench. Compared with the current method for assembling and disassembling the round nut 10 by using the poking rod 20, the round nut 10 is assembled and disassembled by using the round nut screwing tool, so that the workload can be reduced, and the assembling and disassembling efficiency can be improved.

In the embodiment of the present application, the stop pin 30 is not used as the poking rod 20, and the length thereof can be reduced, so that the stop pin does not interfere with the adjacent round nuts 10 during the process of assembling and disassembling the round nuts 10.

Referring to fig. 2, in some examples, the sleeve 40 has a catch groove 41, the catch groove 41 allowing the stop pin 30 to be placed therein to positively engage the stop pin 30 and the sleeve 40. In this case, the stopper pin 30 and the sleeve 40 can be stopper-fitted such that the sleeve 40 transmits torque to the stopper pin 30 during circumferential rotation to thereby screw in/screw out the round nut 10.

Referring to fig. 2, 5 and 6 together, in some examples, the first end of the sleeve 40 is provided with an opening 42, the opening 42 being in communication with the slot 41. During the process of sleeving the sleeve 40, the opening 42 is aligned with the limiting pin 30 preassembled on the round nut 10, and the sleeve 40 is axially slid, so that the limiting pin 30 and the sleeve 40 are in limiting fit.

Referring to fig. 2, in some examples, the card slot 41 may be a U-shaped slot.

In some examples, the opening 42 has a chamfer. In this case, the stopper pin 30 can be easily placed in the card slot 41, which is advantageous in improving convenience.

Referring to fig. 2, in some examples, the sleeve 40 defines a detent 41 through its thickness. In this case, it is possible to facilitate the alignment of the opening 42 with the stopper pin 30 preloaded on the round nut 10, thereby facilitating the assembly of the round nut screwing tool. In addition, since the sleeve 40 is formed with the catching groove 41 penetrating through the thickness direction thereof, the stopper pin 30 can be mounted after the sleeve 40 is assembled, and the assembly is more flexible.

Referring to fig. 2, 5 and 6 together, in some examples, the sleeve 40 has a plurality of detents 41, the plurality of detents 41 being spaced apart along the circumference of the sleeve 40. As shown in fig. 2, for example, the number of the clamping grooves 41 is four, and the four clamping grooves 41 are respectively opposite to the four poking holes 11 of the round nut 10. In this case, the sleeve 40 can be in limit fit with a plurality of limit pins 30 preassembled on the round nut 10, so that the overall stress of the sleeve 40 is uniform, and the reliability of the tool is improved.

Referring to fig. 2, 5 and 6 together, in some examples, the second end of the sleeve 40 may be provided with a connection structure 43, through which the sleeve 40 is connected to an electric torque wrench. In this case, the connection of the sleeve 40 to the electric torque wrench can be achieved.

Referring collectively to fig. 2, 5 and 6, in some examples, the connection structure 43 may be a hex nut.

In some examples, the connection structure 43 may be integrally fixed with the sleeve 40 by a fixed connection such as welding, riveting, screwing, or the like.

Referring to fig. 2, 5 and 6 together, in some examples, the second end of the sleeve 40 may have a cover 44 and the connection structure 43 may be disposed on the cover 44. In a specific arrangement, the cover 44 and the sleeve 40 are integrally formed, and the hexagonal nut may be specifically fixed to the cover 44 by a fixed connection manner such as welding, riveting, screwing, etc.

In some examples, sleeve 40 may have an inner cavity that receives round nut 10, the radius of the inner cavity conforming to the radius of round nut 10. In this case, radial movement of the sleeve 40 with respect to the round nut 10 can be avoided to affect the fitting effect of the sleeve 40.

Referring to fig. 3, in some examples, one end of the stopper pin 30 inserted into the dial hole 11 may be tapered. In this case, the stopper pin 30 can be easily inserted into the dial hole 11, which is advantageous in improving convenience.

Referring to fig. 3 and 4 together, in some examples, the sides of the stop pin 30 may be provided with grooves 31, the grooves 31 allowing the walls of the sleeve 40 to be placed therein to prevent the stop pin 30 from exiting the dial hole 11. That is, in the process of limiting the fit of the sleeve 40 and the limiting pin 30, the sleeve 40 can also limit the limiting pin 30, and prevent the limiting pin 30 from exiting the poking hole 11. In this case, the stopper pin 30 can be prevented from falling off during use, thereby affecting the loading and unloading efficiency.

Referring to fig. 3 and 4 together, in some examples, the groove 31 may be provided along the circumferential direction of the stopper pin 30. In this case, the stopper pin 30 can be engaged with the sleeve 40 at different rotation angles, which is advantageous in improving convenience.

The present disclosure is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. It is therefore contemplated to cover any such omissions, modifications, equivalents, improvements or similar fall within the spirit and scope of the one or more embodiments of the application.

The foregoing is merely illustrative embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present application, and the application should be covered. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

1. A round nut screwing tool, the side of round nut has a poking hole, characterized in that, the round nut screwing tool includes:

one end of the limiting pin is used for being plugged into the poking hole;

2. The round nut screwing tool as defined in claim 1, being characterized in that the sleeve has a catch groove that allows the limit pin to be placed therein to limit fit the limit pin and the sleeve.

3. The round nut screwing tool as defined in claim 2, being characterized in that the first end of the sleeve is provided with an opening, which communicates with the clamping groove.

4. The round nut screwing tool as defined in claim 2, wherein the sleeve is formed with the catching groove through a thickness direction thereof.

5. The round nut screwing tool as defined in claim 2, wherein the sleeve has a plurality of the catching grooves, the plurality of catching grooves being spaced apart along a circumferential direction of the sleeve.

6. The round nut screwing tool as defined in claim 1, being characterized in that the second end of the sleeve is provided with a hexagonal nut, through which the sleeve is connected with the electric torque wrench.

7. The round nut screwing tool as defined in claim 1, wherein the sleeve has an interior cavity that accommodates the round nut, the interior cavity having a radius that corresponds to a radius of the round nut.

8. The round nut screwing tool according to claim 1, wherein an end of the stopper pin inserted into the poking hole is tapered.

9. The round nut screwing tool as defined in claim 1, being characterized in that a groove is provided on a side surface of the limit pin, the groove allowing a cylinder wall of the sleeve to be put therein to prevent the limit pin from being withdrawn from the poking hole.

10. The round nut screwing tool as defined in claim 9, wherein the groove is provided along a circumferential direction of the stopper pin.