CN213684895U - Anti-rotation nut, component mounting structure and railway vehicle - Google Patents
Anti-rotation nut, component mounting structure and railway vehicle Download PDFInfo
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- CN213684895U CN213684895U CN202021785772.8U CN202021785772U CN213684895U CN 213684895 U CN213684895 U CN 213684895U CN 202021785772 U CN202021785772 U CN 202021785772U CN 213684895 U CN213684895 U CN 213684895U
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Abstract
The utility model provides an prevent changeing nut, part mounting structure and rail vehicle belongs to rail vehicle technical field. The anti-rotation nut comprises a nut body; an outer flange part protruding outwards along the radial direction is formed at one end of the nut body in the thickness direction, and an inner flange part protruding outwards along the radial direction is formed at the other end of the nut body; the side wall of the nut body is provided with an anti-rotation surface; the anti-rotation surface is parallel to the thickness direction of the nut body, is used for connecting the opposite surfaces of the outer flange part and the inner flange part and forms an anti-rotation groove with the opposite surfaces of the outer flange part and the inner flange part; the anti-rotation groove is used for being in sliding fit with a profile on a vehicle and limiting the rotation of the nut body relative to the profile. The utility model also provides a part mounting structure and rail vehicle. The utility model provides an prevent among rotating nut, part mounting structure and the rail vehicle rotating nut has prevent rotating and locking effect for the part installation no longer receives the operating space restriction, has improved work efficiency.
Description
Technical Field
The utility model belongs to the technical field of rail vehicle, more specifically say, relate to an anti-rotation nut, part mounting structure and rail vehicle.
Background
In recent years, the main railways, urban rail vehicles and high-speed motor train units in China are developed in a balanced way, and the rail vehicle bodies are made of materials such as aluminum alloy, stainless steel (including austenitic stainless steel and ferritic stainless steel), carbon steel (including weather-resistant steel for vehicles and carbon structural steel) and the like. In designing a rail vehicle structure, it is necessary to mount a member to a vehicle body while securing the mounting strength and the service life of the member.
Generally need be with the help of bolt and nut during the part installation, and generally set up the nut at the back of mount pad for pleasing to the eye, this can shelter from the nut with regard to the mount pad, and the nut can rotate along with the bolt when revolving the bolt simultaneously, and difficult the screwing up, and then lead to installation operating time long, when the equipment of influence vehicle.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide an prevent changeing nut, part mounting structure and rail vehicle aims at solving the long technical problem of fastening bolt operating time.
On one hand, the anti-rotation nut comprises a nut body, wherein one end of the nut body in the thickness direction is provided with an outer flange part protruding outwards in the radial direction, the other end of the nut body is provided with an inner flange part protruding outwards in the radial direction, the side wall of the nut body is provided with an anti-rotation surface, the anti-rotation surface is parallel to the thickness direction of the nut body, is used for connecting the opposite surfaces of the outer flange part and the inner flange part, and forms an anti-rotation groove with the opposite surfaces of the outer flange part and the inner flange part in an enclosing manner; the anti-rotation groove is used for being in sliding fit with a profile on a vehicle and limiting the nut body to rotate relative to the profile;
the hole wall of the threaded hole in the nut body is provided with a stopping part which extends inwards along the radial direction, and the stopping part can be damaged in the screwing process of the bolt and is used for providing a force signal for an installer so that the installer can judge whether the bolt is installed in place or not.
Furthermore, the stopping portions are arranged on two sides of the threaded hole symmetrically.
Further, the outer diameter of the inner flange portion is smaller than that of the outer flange portion, the inner flange portion is used for being connected with a component to be mounted, and the stopping portion is located at the end where the outer flange portion is located.
Further, the thickness of the outer flange portion is greater than the thickness of the inner flange portion.
Furthermore, the anti-rotation nut further comprises an anti-rotation supporting plate which is sleeved on the inner flange part and extends outwards along the radial direction of the nut body.
Further, the thickness of the rotation preventing support plate is equal to the thickness of the inner flange portion.
One of the above technical solutions has the following beneficial effects: compared with the prior art, the anti-rotation nut provided by the scheme can realize the effect of the fastener, can play the roles of preventing rotation and looseness, effectively increases the firmness and operability of the structure, enables the component installation to be free from the limitation of the operation space, and improves the working efficiency.
In another aspect, a component mounting structure is provided for mounting a component to be mounted on a section bar of a vehicle, the component mounting structure including the anti-rotation nut and a bolt threadedly coupled to the nut body;
the section bar is provided with a first mounting hole, the first mounting hole penetrates through the side wall of the section bar along the thickness direction and is communicated with the inner cavity of the section bar, and the anti-rotation nut is arranged in the first mounting hole in a sliding manner;
the bolt penetrates through the part to be installed and is in threaded connection with the nut body so as to install the part to be installed on the section bar.
Further, first mounting hole includes rectangular shape through-hole and is located rectangular shape through-hole one end, with the circular through-hole of rectangular shape through-hole intercommunication, the aperture of circular through-hole is greater than the external diameter of outer flange portion is in order to supply the outer flange portion gets into the inner chamber of section bar, rectangular shape through-hole then be used for with nut body sliding fit, just the pore wall edge of rectangular shape through-hole is spacing in prevent changeing in the recess.
Furthermore, the component mounting structure further comprises a reinforcing plate limited between the outer flange part and the back surface of the profile, and a second mounting hole matched with the first mounting hole is formed in the reinforcing plate.
One of the above technical solutions has the following beneficial effects: compared with the prior art, the anti-rotation nut has the advantages that the firmness and operability of the structure are effectively improved, the limitation of an operation space is avoided in component installation, and the working efficiency is improved. Meanwhile, the sizes of the components in the component mounting structure can be properly adjusted according to the size of the component to be mounted, and the component mounting structure provided by the embodiment can be widely applied to vehicle bodies made of various materials without increasing the weight.
In another aspect, a rail vehicle is provided, which includes the component mounting structure.
One of the above technical solutions has the following beneficial effects: compared with the prior art, the component mounting structure has basically the same technical effect, and is not repeated herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions 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 to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of an anti-rotation nut according to an embodiment of the present invention;
fig. 2 is a schematic view of a vertical cross-section structure of an anti-rotation nut according to an embodiment of the present invention;
fig. 3 is a schematic side view of an anti-rotation nut according to an embodiment of the present invention, taken along direction a in fig. 2;
fig. 4 is a schematic side view of an anti-rotation nut according to an embodiment of the present invention, taken along direction B in fig. 2;
fig. 5 is a schematic structural view of a component mounting structure according to an embodiment of the present invention, in which an anti-rotation supporting plate and a reinforcing plate are schematic vertical sectional structures;
FIG. 6 is a schematic structural view of an anti-rotation support plate used in the embodiment of the present invention;
fig. 7 is a schematic structural diagram of a first mounting hole adopted in the embodiment of the present invention;
FIG. 8 is a schematic view of the connection between the anti-rotation nut and the section bar according to an embodiment of the present invention;
fig. 9 is a schematic view of the connection relationship between the anti-rotation nut and the section bar according to another embodiment of the present invention.
In the figure: 100. a nut body; 110. an outer flange portion; 120. an inner flange portion; 130. an anti-rotation groove; 140. a rotation prevention surface; 150. a stopper portion; 200. a section bar; 300. an anti-rotation supporting plate; 400. a bolt; 500. a first mounting hole; 510. a strip-shaped through hole; 520. a circular through hole; 600. a reinforcing plate; 700. the component is to be mounted.
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.
Referring to fig. 1 to 5, an anti-rotation nut according to an embodiment of the present invention will be described. The anti-rotation nut includes a nut body 100. One end of the nut body 100 in the thickness direction is formed with an outer flange portion 110 that protrudes outward in the radial direction, and the other end is formed with an inner flange portion 120 that protrudes outward in the radial direction. The side wall of the nut body 100 is provided with a rotation prevention surface 140. The rotation preventing surface 140 is parallel to the thickness direction of the nut body 100, connects the opposite surfaces of the outer flange portion 110 and the inner flange portion 120, and encloses a rotation preventing groove 130 with the opposite surfaces of the outer flange portion 110 and the inner flange portion 120. The anti-rotation groove 130 is used to slidingly engage the profile 200 on the vehicle and limit the rotation of the nut body 100 relative to the profile 200.
A stop portion 150 extending radially inward is disposed on a hole wall of the threaded hole in the nut body 100, and the stop portion 150 can be damaged during the screwing process of the bolt 400 and is used for providing a force signal to an installer so that the installer can determine whether the bolt 400 is installed in place.
When the anti-rotation nut mounting component provided by the embodiment is used, a mounting hole for mounting the nut body 100 is firstly formed in the section bar 200 of the vehicle, then the nut body 100 is mounted in the mounting hole, and the component 700 to be mounted is mounted on the section bar 200 by means of the bolt 400 matched with the nut body 100. The mounting hole can be a strip-shaped hole with one open end or a combined hole of the strip-shaped hole and a circular hole. The combined hole can be a circular hole which is positioned at one end of the strip-shaped hole and communicated with the strip-shaped hole, or a circular hole which is positioned at the middle part of the strip-shaped hole and communicated with the strip-shaped hole. The nut body 100 is installed in the mounting hole, and the hole wall edge of the rear elongated hole extends into the rotation-preventing groove 130, so that the nut body 100 can slide to the component mounting position along the elongated hole.
When the nut body 100 is not stressed, the rotation-preventing surface 140 is parallel to the hole wall of the mounting hole or has a slight gap with the hole wall of the mounting hole. When screwing the bolt 400, the nut body 100 is stressed to rotate along with the bolt, and then the anti-rotation surface 140 positioned in the mounting hole is inclined to abut against the hole wall of the mounting hole, so that the nut body 100 is prevented from continuing to rotate, an anti-rotation effect is achieved, and the bolt 400 is guaranteed to be smoothly screwed in or out.
Meanwhile, in the process of screwing the bolt 400, when the bolt 400 is screwed to the position of the stopping portion 150, the stopping portion 150 is subjected to resistance force, and an installer needs to screw the bolt 400 with greater force to break the stopping portion 150, so that the bolt 400 is screwed further inwards. Even if the screwing depth of the bolt 400 is shielded by the sectional material 200, an installer can still accurately judge whether the bolt 400 is installed in place, so that the stability of the installation structure after the part is installed is ensured, and meanwhile, the stopping part 150 can play a certain anti-loosening role.
The embodiment of the utility model provides a prevent nut that changes, compared with the prior art, the nut body 100 that can slide on vehicle section bar 200 has been set up, and set up on the outer wall of nut body 100 and prevented the rotating-structure, nut body 100 takes place along with it pivoted phenomenon when effectively preventing changeing rotatory bolt 400, the smooth precession or the screw-out of bolt 400 have been guaranteed, make the installation of automobile body upper part, no longer need stretch into section bar 200 inner chamber fixation nut with hand or instrument, operating space is unrestricted, the convenience of operation has been improved simultaneously, and the work efficiency is improved.
In addition, the anti-rotation nut provided by the embodiment further comprises a stopping portion 150 which extends inwards along the radial direction and is additionally arranged on the hole wall of the threaded hole of the nut body 100, so that an installer can conveniently confirm whether the bolt 400 is installed in place, meanwhile, the risk of separation after the bolt 400 is connected with the nut body 100 is reduced, and the stability of the installation structure after the components are installed is ensured.
To sum up, the effect of fastener can be realized to the anti-rotation nut that this embodiment provided, can play rotation prevention and locking effect again, has effectively increased the fastness and the maneuverability of structure for the part installation no longer receives the operating space restriction, has improved work efficiency.
The stopper 150 may be a thin plate, an barb, or the like formed on the inner wall of the screw hole as long as the above-described effects are achieved.
Referring to fig. 3 and 4, as an embodiment of the anti-rotation nut of the present invention, two stopping portions 150 are symmetrically disposed on two sides of the threaded hole.
Thus, the stability of the stress on the two sides of the bolt 400 is ensured, and the stability of the mounting structure after the components are mounted is further improved.
Referring to fig. 1 to 4, as an embodiment of the anti-rotation nut of the present invention, an outer diameter of the inner flange 120 is smaller than an outer diameter of the outer flange 110, the inner flange 120 is used for connecting with a component 700 to be mounted, and the stopping portion 150 is located at an end of the outer flange 110.
The stopping portion 150 is located at one end far away from the component 700 to be mounted, so that the stopping portion 150 is touched only when the bolt 400 completely penetrates through the nut body 100, and therefore the contact area between the bolt 400 and the nut body 100 is large enough, and the stability of the mounting structure after component mounting is effectively met.
To secure the strength of the nut body 100, referring to fig. 1 and 2, the thickness of the outer flange portion 110 of the nut body 100 is greater than the thickness of the inner flange portion 120.
Referring to fig. 5 and 6, in order to further ensure the stability of the component mounting structure, on the basis of the above embodiment, an anti-rotation supporting plate 300 that is sleeved on the inner flange portion 120 and extends outward along the radial direction of the nut body 100 is additionally disposed in the anti-rotation nut. The anti-rotation supporting plate 300 is used to increase the effective contact area between the nut body 100 and the component 700 to be mounted, thereby improving the stability of the mounting structure after the component is mounted.
Further, the thickness of the anti-rotation holding plate 300 is equal to the thickness of the inner flange portion 120. After the anti-rotation support plate 300 is mounted on the inner flange portion 120, the outer surface of the anti-rotation support plate 300 and the corresponding outer surface of the inner flange portion 120 are on the same plane, thereby ensuring the stability of the component mounting structure.
In the prior art, the connection mode of parts can be adaptively changed due to different materials of the vehicle body. The vehicle body is classified according to materials and mainly classified into an aluminum alloy vehicle body, a stainless steel vehicle body and a carbon steel vehicle body. Wherein, most of the parts in the aluminum alloy automobile body are installed through a C-shaped groove or a riveting connection code structure of the aluminum section bar 200. But stainless steel automobile body hardness is big, is not suitable for and uses riveted structure on a large scale, and the stainless steel automobile body mostly is beam column and stainless steel covering welding and forms, if weld C type groove on the covering, the covering can take place to warp, leads to the unable satisfy the requirement of the roughness of whole car, if weld C type groove on the beam column, because of the beam column arranges that the dimensional requirement of the part installation of the unable satisfying whole car of restriction of receiving the position. Most carbon steel car bodies are of combined structures of frameworks and skins, the positions for welding the C-shaped grooves are limited by the thickness of the reinforcing ribs and the car body skins, and the condition that the C-shaped groove structures are used in a large range is not met.
Therefore, the C-shaped groove or riveting connection code connecting structure is only suitable for the aluminum profile 200 car body, but not suitable for a stainless steel car body and a carbon steel car body. If the connecting codes are welded on the inner diameter of the car body to install the parts, the welding precision requirement is high, the task amount of later-stage change reworking is large, and the production cycle of the whole car is not facilitated.
Therefore, a component mounting structure suitable for all vehicle bodies is urgently required. Therefore, the embodiment of the utility model provides a still provide a part mounting structure. Referring to fig. 5 to 9, the component mounting structure for mounting a component 700 to be mounted on a section bar 200 of a vehicle includes an anti-rotation nut and a bolt 400 threadedly coupled to a nut body 100.
The section bar 200 is provided with a first mounting hole 500, the first mounting hole 500 penetrates through the side wall of the section bar 200 along the thickness direction and is communicated with the inner cavity of the section bar 200, and the anti-rotation nut is arranged in the first mounting hole 500 in a sliding manner.
The bolt 400 is screwed with the nut body 100 through the member to be mounted 700 to mount the member to be mounted 700 on the profile 200.
The embodiment of the utility model provides a part mounting structure has adopted above-mentioned anti-rotation nut, has effectively increased the fastness and the maneuverability of structure for the part installation no longer receives the operating space restriction, has improved work efficiency. Meanwhile, the sizes of the respective components in the component mounting structure may be appropriately adjusted according to the size of the component 700 to be mounted, and the component mounting structure provided by the present embodiment may be applied to a wide range of vehicle bodies of various materials without increasing the weight.
The section bar 200 may be a channel steel, an inverted U-shaped column or a welding code on the vehicle body, and may be specifically selected according to the installation position of the component.
The mounting hole can be a strip-shaped hole with one open end or a combined hole of the strip-shaped hole and a circular hole. The combined hole can be a circular hole which is positioned at one end of the strip-shaped hole and communicated with the strip-shaped hole, or a circular hole which is positioned at the middle part of the strip-shaped hole and communicated with the strip-shaped hole. The nut body 100 is installed in the mounting hole, and the hole wall edge of the rear elongated hole extends into the rotation-preventing groove 130, so that the nut body 100 can slide to the component mounting position along the elongated hole.
Further, the component mounting structure further includes a spacer disposed between the profile 200 and the member to be mounted 600. The gasket referred to herein may be an elastomeric pad, a flat pad, or a combination of both.
Further, the first mounting hole 500 includes an elongated through hole 510 and a circular through hole 520 located at one end of the elongated through hole 510 and communicated with the elongated through hole 510, the aperture of the circular through hole 520 is larger than the outer diameter of the outer flange portion 110 for the outer flange portion 110 to enter the inner cavity of the profile 200, the elongated through hole 510 is used for sliding fit with the nut body 100, and the edge of the hole wall of the elongated through hole 510 is limited in the rotation-preventing groove 130.
When the vehicle body mounting structure is used, the length and the width of the first mounting hole 500 are determined according to the tolerance and the adjustment quantity requirements of different vehicle bodies. Wherein the width of the first mounting hole 500 is generally greater than 1mm of the distance between the two anti-rotation surfaces 140. Therefore, the structure is suitable for carbon steel car bodies and stainless steel car bodies, the car bodies made of the two materials have high strength, and the first mounting hole 500 can be directly formed in the car body section bar 200 and welded connecting codes.
If the thickness of the sectional material 200 at the local opening of the car body is not enough, the back part can be reinforced. Referring to fig. 5, as an embodiment of the component mounting structure provided by the present invention, the component mounting structure further includes a reinforcing plate 600 limited between the outer flange portion 110 and the back surface of the profile 200, and the reinforcing plate 600 is provided with a second mounting hole 700 adapted to the first mounting hole 500.
At this time, the thickness of the rotation-preventing groove 130 is equal to the thickness of the body section 200 + the thickness of the reinforcing plate 600 +0.5mm (margin); the distance between the two anti-rotation surfaces 140 in the anti-rotation groove 130 is 1mm less than the width of the elongated through hole 510 in the first mounting hole 500, so that the nut body 100 can smoothly slide into the elongated through hole 510.
The reinforcing plate 600 is provided to reinforce the strength of the mounting portion of the nut body 100 on the profile 200, and to ensure the stability of the component mounting structure.
The embodiment of the utility model provides a still provide a rail vehicle. The rail vehicle includes the above-described component mounting structure.
The embodiment of the utility model provides a rail vehicle has adopted above-mentioned part mounting structure, has obtained basically the same technological effect, no longer gives unnecessary details here.
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 anti-rotation nut is characterized by comprising a nut body, wherein one end of the nut body in the thickness direction is provided with an outer flange part protruding outwards in the radial direction, the other end of the nut body is provided with an inner flange part protruding outwards in the radial direction, the side wall of the nut body is provided with an anti-rotation surface, the anti-rotation surface is parallel to the thickness direction of the nut body, is used for connecting the opposite surfaces of the outer flange part and the inner flange part, and forms an anti-rotation groove with the opposite surfaces of the outer flange part and the inner flange part in an enclosing manner; the anti-rotation groove is used for being in sliding fit with a profile on a vehicle and limiting the nut body to rotate relative to the profile;
the hole wall of the threaded hole in the nut body is provided with a stopping part which extends inwards along the radial direction, and the stopping part can be damaged in the screwing process of the bolt and is used for providing a force signal for an installer so that the installer can judge whether the bolt is installed in place or not.
2. An anti-rotation nut according to claim 1, characterized in that: the stopping parts are two and symmetrically arranged on two sides of the threaded hole.
3. An anti-rotation nut according to claim 1 or 2, characterized in that: the outer diameter of the inner flange part is smaller than that of the outer flange part, the inner flange part is used for being connected with a part to be installed, and the stopping part is located at the end of the outer flange part.
4. An anti-rotation nut according to claim 3, characterized in that: the thickness of the outer flange portion is greater than the thickness of the inner flange portion.
5. An anti-rotation nut according to claim 3, characterized in that: the anti-rotation nut further comprises an anti-rotation supporting plate which is sleeved on the inner flange part and extends outwards along the radial direction of the nut body.
6. An anti-rotation nut according to claim 5, characterized in that: the thickness of the anti-rotation support plate is equal to that of the inner flange part.
7. A component mounting structure for mounting a component to be mounted on a profile of a vehicle, characterized in that the component mounting structure comprises the anti-rotation nut of any one of claims 1 to 6 and a bolt threadedly connected to the nut body;
the section bar is provided with a first mounting hole, the first mounting hole penetrates through the side wall of the section bar along the thickness direction and is communicated with the inner cavity of the section bar, and the anti-rotation nut is arranged in the first mounting hole in a sliding manner;
the bolt penetrates through the part to be installed and is in threaded connection with the nut body so as to install the part to be installed on the section bar.
8. The component mounting structure according to claim 7, wherein: the first mounting hole comprises a long-strip-shaped through hole and a circular through hole which is located at one end of the long-strip-shaped through hole and communicated with the long-strip-shaped through hole, the aperture of the circular through hole is larger than the outer diameter of the outer flange part to allow the outer flange part to enter the inner cavity of the section bar, the long-strip-shaped through hole is used for being in sliding fit with the nut body, and the edge of the hole wall of the long-strip-shaped through hole is limited in the anti-rotation groove.
9. The component mounting structure according to claim 8, wherein: the component mounting structure further comprises a reinforcing plate limited between the outer flange part and the back face of the sectional material, and a second mounting hole matched with the first mounting hole is formed in the reinforcing plate.
10. Rail vehicle, its characterized in that: comprising the component mounting structure as recited in any one of claims 7 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021785772.8U CN213684895U (en) | 2020-08-24 | 2020-08-24 | Anti-rotation nut, component mounting structure and railway vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021785772.8U CN213684895U (en) | 2020-08-24 | 2020-08-24 | Anti-rotation nut, component mounting structure and railway vehicle |
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| CN213684895U true CN213684895U (en) | 2021-07-13 |
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| CN202021785772.8U Active CN213684895U (en) | 2020-08-24 | 2020-08-24 | Anti-rotation nut, component mounting structure and railway vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606242A (en) * | 2021-07-28 | 2021-11-05 | 岚图汽车科技有限公司 | Anti-rotation nut assembly, steering gear mounting structure and mounting method |
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2020
- 2020-08-24 CN CN202021785772.8U patent/CN213684895U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606242A (en) * | 2021-07-28 | 2021-11-05 | 岚图汽车科技有限公司 | Anti-rotation nut assembly, steering gear mounting structure and mounting method |
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