CN209835406U - Lifting lug and cabinet body with same - Google Patents
Lifting lug and cabinet body with same Download PDFInfo
- Publication number
- CN209835406U CN209835406U CN201920675398.7U CN201920675398U CN209835406U CN 209835406 U CN209835406 U CN 209835406U CN 201920675398 U CN201920675398 U CN 201920675398U CN 209835406 U CN209835406 U CN 209835406U
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- lifting lug
- bolt
- nut
- groove
- rotation block
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Abstract
The utility model discloses a lifting lug, include: the lifting lug body is provided with a bolt mounting hole; the anti-rotation block is connected with the lifting lug body, the anti-rotation block is provided with a nut used for constraining the fastening bolt so as to prevent the bolt from rotating, and a washer used for being in contact with the nut is arranged between the anti-rotation block and the lifting lug body. Through the size restriction of preventing changeing the hole, can restrict the position of nut, prevent that the bolt from rotating. Meanwhile, the gasket increases the contact area of the nut and the pressure bearing face and can disperse pressure, so that the stress value of the nut and the pressure bearing face can be reduced, the nut and the pressure bearing face are prevented from being crushed, the safety risk is reduced, and the safety of bolt connection is ensured. The utility model also discloses a cabinet body of including above-mentioned lug.
Description
Technical Field
The utility model relates to a lifting device technical field, more specifically say, relate to a lug. Furthermore, the utility model discloses still relate to a cabinet body including above-mentioned lug.
Background
In the technical field of rail transit, underbody installation components such as a traction converter, an auxiliary converter and a high-voltage box are generally connected with an entire car installation beam through a lifting lug on a corresponding cabinet body, and the lifting lug is generally connected with the entire car installation beam through a bolt.
When the converter cabinet body and the like are installed, in order to fasten the bolts, a wrench is generally required to be adopted at the nuts of the bolts for constraint, and the nuts are required to be screwed by a wrench with a fixed torque. However, the space at the bottom of the whole vehicle is limited, and the working space is narrow, so that when the bolt is fastened, the space above the lifting lug is not enough for putting down the wrench and the arm, namely, the wrench is restrained at the position of the nut when the bolt is fastened, and the nut and the bolt cannot be fastened due to the wrench.
Considering the installation of converter cabinet body etc. and the convenient validity of dismantlement, in order to save staff's time and energy, raise the efficiency, the lug among the prior art is equipped with bolt anti-rotation structure to solve the lug and the fixed problem of whole car installation roof beam.
Specifically, a cushion block is arranged at the bolt mounting hole of the lifting lug, a waist-shaped mounting hole corresponding to the bolt mounting hole and a waist-shaped counter bore connected with the waist-shaped mounting hole are formed in the cushion block, the distance between two parallel straight edges of the waist-shaped counter bore is slightly larger than the maximum outer diameter of a bolt and a nut, when the bolt is fastened, the nut is located in the waist-shaped counter bore and is in contact with the end face of the waist-shaped mounting hole, and the bolt is prevented from rotating in the fastening process through structural limitation of the two straight edges of the waist-shaped counter bore.
However, the anti-rotation structure has stress concentration at the contact surface of the nut and the cushion block, and the bolt can be loosened or even fail along with the increase of the service time, so that potential safety hazards exist.
In summary, how to provide a lifting lug capable of preventing a fastening bolt from rotating and enabling the bolt to be safe and effective for a long time is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a lug, when passing through this lug of bolt fastening, can prevent that the bolt from rotating and can guarantee bolted connection's long-term safe effective in fastening process.
Another object of the utility model is to provide a cabinet body including above-mentioned lug, the installation of this cabinet body and dismantlement convenient and fast.
In order to achieve the above object, the present invention provides the following technical solutions:
a shackle, comprising:
the lifting lug comprises a lifting lug body, wherein the lifting lug body is provided with a bolt mounting hole;
the anti-rotation block is connected with the lifting lug body, the anti-rotation block is provided with a nut used for restraining a fastening bolt so as to prevent the bolt from rotating, and a gasket used for contacting with the nut is arranged between the anti-rotation block and the lifting lug body.
Preferably, the rotation prevention block is provided with a yielding groove for accommodating the gasket, so that the gasket is prevented from influencing the joint contact of the rotation prevention block and the lifting lug body.
Preferably, the depth of the relief groove is greater than the thickness of the gasket.
Preferably, the abdicating groove is a U-shaped open groove, the open end of the abdicating groove is flush with the outward side of the anti-rotating block, so that the gasket is installed into the abdicating groove from the open end.
Preferably, the edge of one side of the anti-rotation block facing the opening end is provided with a clamping groove which is vertically communicated with the abdicating groove, and the anti-rotation block further comprises a clamping piece which is connected with the clamping groove in a sliding manner so as to block the gasket and prevent the gasket from falling off.
Preferably, the abdicating groove is a closed groove with a closed groove wall.
Preferably, the rotation prevention block is detachably connected with the lifting lug body through a fastener.
The cabinet body comprises a lifting lug which is any one of the lifting lugs.
The utility model provides a lug owing to be equipped with the packing ring that is used for with the contact of nut bottom surface between preventing changeing piece and lug body, consequently, when putting into the bolt mounting hole with the bolt, the nut is arranged in preventing changeing the hole, and through the size restraint who prevents changeing the hole, can restrict the position of nut, makes the nut can't rotate in preventing changeing the hole, and then through the compulsory limiting action to the nut, avoids fastening bolt to rotate.
Meanwhile, the bottom surface of the nut is in direct contact with the gasket, the gasket is in contact with the pressure bearing face of the lifting lug, the gasket increases the contact area of the nut and the pressure bearing face, and pressure can be dispersed, so that the stress value of the nut and the pressure bearing face can be reduced, the nut and the pressure bearing face are prevented from being crushed, safety risks are reduced, and the safety of bolt connection is ensured.
In addition, the gasket can also reduce stress concentration, prevent the bolt from loosening, and further improve the safety of bolt connection.
The utility model provides a cabinet body, including above-mentioned lug, because the lug has above-mentioned beneficial effect, consequently, can make the installation of this cabinet body and dismantle convenient and fast.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of a specific embodiment of a lifting lug provided by the present invention;
FIG. 2 is a schematic structural view of the shackle shown in FIG. 1 without a washer;
FIG. 3 is the anti-rotation block of FIG. 1;
FIG. 4 is a schematic structural view of the lifting lug shown in FIG. 1 after the bolt is installed;
fig. 5 is a schematic view showing a contact area of a nut directly contacting a pressure-bearing surface when the lifting lug shown in fig. 1 is not provided with a washer.
The reference numerals in fig. 1 to 5 are as follows:
the lifting lug comprises a lifting lug body 1, a bolt mounting hole 11, an anti-rotation block 2, an anti-rotation hole 21, an abdicating groove 22, a washer 3, a bolt 4 and a contact area 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The core of the utility model is to provide a lug, when passing through this lug of bolt fastening, can prevent that the bolt from rotating in fastening process and can guarantee that bolted connection's long-term safety is effective. The utility model discloses an another core provides the cabinet body including above-mentioned lug, the installation of this cabinet body with dismantle convenient and fast.
Referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of a specific embodiment of a lifting lug provided by the present invention; FIG. 2 is a schematic structural view of the shackle shown in FIG. 1 without a washer; FIG. 3 is the anti-rotation block of FIG. 1; FIG. 4 is a schematic structural view of the lifting lug shown in FIG. 1 after the bolt is installed; fig. 5 is a schematic view showing a contact area of a nut directly contacting a pressure-bearing surface when the lifting lug shown in fig. 1 is not provided with a washer.
The utility model provides a lug, the installation of mainly used track transportation vehicles bottom spare part, this lug includes lug body 1 and locates the piece 2 of preventing changeing on the lug body 1, lug body 1 is equipped with bolt mounting hole 11, bolt mounting hole 11 is used for wearing to establish bolt 4 to realize being connected of lug and other spare parts, for example, when the lug is connected with track transportation vehicles's whole car installation roof beam, realize the lug through the bolt 4 who wears to locate this bolt mounting hole 11 and install the fixed of roof beam with whole car.
The anti-rotation block 2 is used for preventing the bolt 4 from rotating in the installation process of the bolt 4 so as to install a nut and realize the fastening of the bolt 4.
Specifically, the anti-rotation block 2 is provided with an anti-rotation hole 21 for constraining the nut of the fastening bolt 4 to prevent the bolt 4 from rotating, and a washer 3 for contacting the nut is provided between the anti-rotation block 2 and the lug body 1.
That is to say, the utility model discloses a prevent the size restraint of rotation hole 21, restrict the position of nut, make the nut prevent the unable rotation in rotation hole 21, and then through the compulsory limiting action to the nut, avoid fastening bolt 4 to rotate.
It can be understood that the anti-rotation hole 21 is communicated with the bolt mounting hole 11, and the minimum inner diameter of the anti-rotation hole 21 is larger than the minimum inner diameter of the bolt mounting hole 11, so that when the bolt 4 is put into the bolt mounting hole 11, the nut of the bolt 4 is positioned in the anti-rotation hole 21.
In consideration of installation errors, in order to facilitate adjustment of the mounting position of the shackle, the bolt mounting hole 11 is generally designed as a kidney-shaped hole, and correspondingly, the anti-rotation hole 21 is preferably a kidney-shaped hole, and a connection portion between the kidney-shaped anti-rotation hole 21 and the kidney-shaped bolt mounting hole 11 forms a pressure bearing surface for contacting a bottom surface of the nut.
However, if the bottom surface of the nut directly contacts the pressure-bearing surface, the contact area 5 between the bottom surface and the pressure-bearing surface is small (as shown in fig. 5), during the fastening process of the bolt 4, the nut generates a compressive stress on the pressure-bearing surface, and the pressure-bearing surface generates a reaction force on the nut, and because the contact area 5 between the bottom surface of the nut and the pressure-bearing surface is small, under the action of the pre-tightening force of the bolt 4, the stress values received by the nut and the pressure-bearing surface are both large, and when the stress values are larger than the tensile limit and the yield strength of the bolt 4, there is a safety hazard, especially when the vibration impact is; on the other hand, when the pressure receiving face is subjected to a large compressive stress, it is easily crushed.
In addition, when the bottom surface of the nut directly contacts with the pressure bearing surface, the stress at the contact surface of the nut and the pressure bearing surface is concentrated, and the bolt 4 can be loosened and lose efficacy after long-term use, so that potential safety hazards exist.
Therefore, consider bolted connection's fail safe nature, for reducing the safety risk, the utility model discloses be equipped with between preventing changeing piece 2 and lug body 1 and be used for the packing ring 3 with the contact of nut bottom surface, also promptly, be equipped with packing ring 3 in the face department of being connected of preventing changeing hole 21 and bolt mounting hole 11.
Preferably, the gasket 3 is a flat gasket 3.
It can be understood that, when putting bolt 4 into bolt mounting hole 11, the nut is located prevents that rotation hole 21, the bottom surface and the packing ring 3 direct contact of nut, and packing ring 3 contacts with the pressure-bearing face of lug again, and packing ring 3 has increased the area of contact of nut and pressure-bearing face, can disperse pressure, consequently, can reduce the stress value that nut and pressure-bearing face received, prevents that nut and pressure-bearing face from being crushed, reduces the safety risk, ensures bolted connection's security.
In addition, the gasket 3 can reduce stress concentration, prevent the bolt 4 from loosening and further improve the safety of bolt connection.
In order to avoid the influence of the washer 3 on the connection between the anti-rotation block 2 and the lifting lug and ensure the smooth and stable contact between the anti-rotation block 2 and the lifting lug, on the basis of the above embodiment, a washer accommodating groove for accommodating the washer 3 is arranged between the anti-rotation block 2 and the lifting lug so as to prevent the washer 3 from influencing the joint contact between the anti-rotation block 2 and the lifting lug.
The packing ring holding tank can set up on preventing changeing piece 2, also can set up on the lug, of course, can also set up the recess respectively in the corresponding position of preventing changeing piece 2 and lug, prevents changeing piece 2 and lug laminating contact back, and two recesses form the packing ring holding tank jointly.
In view of the convenience of the gasket receiving groove, as a preferable scheme, the rotation preventing block 2 is provided with a relief groove 22 for receiving the gasket 3, that is, the relief groove 22 serves as a gasket receiving groove for allowing the gasket 3 to be located in the relief groove 22 after installation.
It will be appreciated that the relief groove 22 is in axial communication with the anti-rotation hole 21.
In view of convenience of installation, it is preferable that the depth of the relief groove 22 is greater than the thickness of the gasket 3, that is, the gasket 3 can be easily put into the relief groove 22.
In view of the convenience of replacing the gasket 3, on the basis of the above embodiment, the receding groove 22 is a U-shaped open groove, and the open end of the receding groove 22 is flush with the outward side of the anti-rotation block 2, so that the gasket 3 is inserted into the receding groove 22 from the open end.
That is, the sidewall of the receding groove 22 in this embodiment is provided with an opening so that the gasket 3 can be freely put into the receding groove 22 from the opening.
When in use, the gasket 3 is inserted into the abdicating groove 22 from the opening end.
It can be understood that, under the condition that the abdicating groove 22 is a U-shaped open groove, the washer 3 can be installed and replaced without disassembling the anti-rotation block 2, therefore, the anti-rotation block 2 can be permanently and fixedly connected with the lifting lug, so as to ensure the stability of the connection between the anti-rotation block 2 and the lifting lug and improve the connection strength between the anti-rotation block 2 and the lifting lug, for example, the anti-rotation block 2 is welded with the lifting lug.
Considering that the receding groove 22 is a U-shaped opening groove, and the depth of the receding groove 22 is greater than the thickness of the gasket 3, the gasket 3 is easy to fall off from the receding groove 22, and in order to prevent the gasket 3 from falling off, on the basis of the above embodiment, the anti-rotation block 2 is provided with a clamping groove vertically penetrating through the receding groove 22 at an edge portion of one side facing the opening end, and further includes a clamping piece slidably connected with the clamping groove to block the gasket 3 and further prevent the gasket 3 from falling off.
That is, the present embodiment blocks the opening end by the locking piece, and prevents the gasket 3 from falling off from the opening end.
When the gasket 3 is installed, the clamping and fixing sheet slides relative to the clamping groove to open the opening end, so that the gasket 3 is placed into the abdicating groove 22 from the opening end; after the gasket 3 enters the receding groove 22, the clamping piece slides to the position blocking the opening end along the clamping groove, so that the gasket 3 is prevented from falling off from the opening end.
It can be understood that, in the present embodiment, the maximum length between the side walls of the U-shaped open slot is greater than the outer diameter of the washer 3, so that the washer 3 can completely enter the offset slot 22, and the washer 3 is prevented from affecting the clamping piece to block the open end.
Of course, the abdicating groove 22 can also be a closed groove with a closed side wall, before the anti-rotation block 2 is connected with the lifting lug, the gasket 3 is firstly placed in the closed groove, and then the anti-rotation block 2 is connected with the lifting lug. For example, the anti-rotation block 2 is fixed with the lifting lug by welding.
In order to facilitate the replacement of the washer 3, on the basis of the above embodiment, the anti-rotation block 2 is detachably connected with the lifting lug through a fastener.
That is, the present embodiment realizes replacement of the gasket 3 by detaching the rotation preventing block 2.
In addition to the above-mentioned lug, the utility model discloses still provide a cabinet body including the lug disclosed in the above-mentioned embodiment.
It should be noted that, the utility model discloses do not restrict the concrete structure of the cabinet body, this cabinet body mainly used bears, holds needs hoist and mount fixed spare part, for example, draws the converter cabinet body, the auxiliary converter cabinet body and the high-voltage box cabinet body etc. and please refer to prior art for the concrete structure of drawing the converter cabinet body, the auxiliary converter cabinet body and the high-voltage box cabinet body etc. this text is no longer repeated.
The utility model provides a lug that the cabinet body's key feature lies in including the above-mentioned arbitrary one embodiment is disclosed, and the cabinet body is connected fixedly through above-mentioned lug and whole car installation roof beam, because the lug has above-mentioned beneficial effect for this cabinet body and the installation of whole car installation roof beam with dismantle convenient and fast.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above the utility model provides a lug and have cabinet body of this lug introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (8)
1. A shackle, comprising:
the lifting lug comprises a lifting lug body (1), wherein the lifting lug body (1) is provided with a bolt mounting hole (11);
the anti-rotation block (2) is connected with the lifting lug body (1), the anti-rotation block (2) is provided with a nut used for restraining a fastening bolt so as to prevent the bolt from rotating, and a washer (3) used for being in contact with the nut is arranged between the anti-rotation block (2) and the lifting lug body (1).
2. The shackle according to claim 1, characterised in that the anti-rotation block (2) is provided with a relief groove (22) for receiving the washer (3) to prevent the washer (3) from affecting the anti-rotation block (2) into abutting contact with the shackle body (1).
3. The shackle according to claim 2, characterised in that the depth of the relief groove (22) is greater than the thickness of the washer (3).
4. The shackle according to claim 3, characterised in that the relief groove (22) is a U-shaped open groove, and the open end of the relief groove (22) is flush with the outward facing side of the rotation prevention block (2) so that the washer (3) is fitted into the relief groove (22) from the open end.
5. The lifting lug according to claim 4, wherein a slot vertically penetrating the abdicating groove (22) is formed at an edge of one side of the anti-rotation block (2) facing the opening end, and the lifting lug further comprises a clamping piece slidably connected with the slot to block the gasket (3) and prevent the gasket (3) from falling off.
6. The shackle according to claim 2, characterised in that the relief groove (22) is a closed groove with closed groove walls.
7. The shackle of claim 6, wherein the anti-rotation block (2) is removably connected to the shackle body (1) by a fastener.
8. A cabinet body comprising a lifting lug, wherein the lifting lug is as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920675398.7U CN209835406U (en) | 2019-05-10 | 2019-05-10 | Lifting lug and cabinet body with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920675398.7U CN209835406U (en) | 2019-05-10 | 2019-05-10 | Lifting lug and cabinet body with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209835406U true CN209835406U (en) | 2019-12-24 |
Family
ID=68897074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920675398.7U Active CN209835406U (en) | 2019-05-10 | 2019-05-10 | Lifting lug and cabinet body with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209835406U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112026815A (en) * | 2020-08-05 | 2020-12-04 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle equipment hanging frame, rail vehicle body underframe and rail vehicle |
-
2019
- 2019-05-10 CN CN201920675398.7U patent/CN209835406U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112026815A (en) * | 2020-08-05 | 2020-12-04 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle equipment hanging frame, rail vehicle body underframe and rail vehicle |
| CN112026815B (en) * | 2020-08-05 | 2022-02-15 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle equipment hanging frame, rail vehicle body underframe and rail vehicle |
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