CN219673062U

CN219673062U - Screw seat installation component inside enclosed construction

Info

Publication number: CN219673062U
Application number: CN202321029848.8U
Authority: CN
Inventors: 宋显刚; 郑凯; 张志鹏; 曾宇; 李雨蔚
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-09-12
Anticipated expiration: 2033-04-28

Abstract

The utility model discloses a screw seat mounting assembly in a closed structure, which comprises a closed cavity profile, a screw seat and a mounting handle, wherein the closed cavity profile is provided with a process hole, a first screw hole and a first fixing hole, and the screw seat is provided with a second screw hole and a second fixing hole; the mounting handle is provided with a screw seat connecting hole, the screw seat connecting hole is used for being connected with one of the second fixing holes of the screw seat through a pre-positioning stud, other second fixing holes of the screw seat are directly connected with corresponding first fixing holes through fixing screws, and the first fixing holes corresponding to the closed cavity section bar and the pre-positioning stud are arranged to be capable of being screwed out of the pre-positioning stud. When the installation component is assembled, not only can the screw seat be transferred to the inside of the closed cavity, but also the screw seat does not have the risk of falling in the whole fixing process, and the problem that the screw seat is difficult to install on the inner side of the closed cavity is solved.

Description

Screw seat installation component inside enclosed construction

Technical Field

The utility model relates to the technical field of railway vehicles, in particular to a screw seat installation component in a closed structure adopted by a railway vehicle during assembly.

Background

In the composite material intelligent motor train unit cab structure, the cab part area needs to be fixed on the underframe boundary beam through the M12 bolt, but the underframe boundary beam is of a closed aluminum profile cavity structure, a nut cannot be arranged on the inner side of the profile cavity, and the area has no riveting space for unilateral construction, so that the cab part area needs to be fixed by adopting a screw seat, but the inside space is narrow, the operator cannot directly operate by hands, and the problem that the screw seat falls into the inside of the profile cavity and cannot be taken out in the process of installing the screw seat is solved.

In this regard, although an auxiliary tool may be used instead of a human hand to perform the operation, for example, CN 201816011U discloses an auxiliary tool for fastening a screw, which has a rod member, a bending member is provided at the bottom of the rod member, the bending member has a notch, the bending member is formed by a trapezoidal support member and a positioning member with a notch, and an included angle between the support member and the positioning member is any angle of 95 ° to 120 °.

When the screw is used, the screw is placed in the opening of the bending piece, the top end of the rod piece is held by the left hand, the screw is moved to the screw hole of the middle crack of the electronic product by the right hand, the screw can be fastened by the screw driver, and the screw can be moved to other occasions which have influence on the assembly efficiency due to smaller assembly space.

Although the auxiliary tool can replace hands to transfer the screw to a region with a small space for fixing, the screw can be only placed at the notch of the bending piece, and in actual operation, the screw still has the risk of falling off from the notch of the bending piece, and the auxiliary tool cannot be used for reliably conveying the screw seat into the inside of the closed space for fixing.

Disclosure of Invention

The utility model aims to provide a screw seat installation component in a closed structure. When the installation component is assembled, not only can the screw seat be transferred to the inside of the closed cavity, but also the screw seat does not have the risk of falling in the whole fixing process, and the problem that the screw seat is difficult to install on the inner side of the closed cavity is solved.

In order to achieve the above-mentioned purpose, the present utility model provides a screw seat installation component in a closed structure, including a closed cavity section bar, a screw seat and an installation handle, where the closed cavity section bar is provided with a process hole, a first screw hole and a first fixing hole, the screw seat is provided with a second screw hole and a second fixing hole, the first screw hole corresponds to the second screw hole, and the second fixing hole corresponds to the first fixing hole; the installation handle is used for transferring the screw seat from the process hole to the inside of the closed cavity section bar, the installation handle is provided with a screw seat connecting hole, the screw seat connecting hole is used for being connected with one of the second fixing holes of the screw seat through a prepositioning stud, other second fixing holes of the screw seat are directly connected with corresponding first fixing holes through fixing screws, and the closed cavity section bar and the first fixing holes corresponding to the prepositioning stud are arranged to be capable of being screwed out of the prepositioning stud so as to replace the prepositioning stud with the fixing screw.

Optionally, the installation handle includes handle and portion of penetrating into, handle and portion of penetrating into are the angle setting, the screw seat connecting hole is located the front end of portion of penetrating into.

Optionally, the installation handle is L-shaped, and an included angle between the handle and the penetrating part is a right angle or an obtuse angle.

Optionally, the pre-positioning stud is a stud with a head diameter equal to or smaller than the outer diameter of the threaded portion thereof.

Optionally, the pre-positioning stud is a hexagon socket stud.

Optionally, the fixing screw is a screw with a head diameter larger than the first fixing hole diameter.

Optionally, the screw seat includes connecting plate and screw thread piece, the second screw hole runs through connecting plate and screw thread piece, the screw thread piece pass through the connecting plate laminate in the internal surface of closed cavity section bar.

Optionally, two second fixing holes are formed in the connecting plate, and the two second fixing holes are located on two sides of the threaded block respectively.

Optionally, the closed cavity profile is provided with two first fixing holes, one of which is close to the process hole, and the other of which is far away from the process hole.

Optionally, the screw seat connecting hole is used for connecting the screw seat to a second fixing hole close to the process hole through a pre-positioning stud.

The utility model provides an installation component of a screw seat in a closed structure, wherein a process hole for placing the screw seat is formed in a closed cavity section bar, and an installation handle is also arranged at the same time. Because at the earlier stage of whole installation, screw seat and installation handle fixed connection, at the middle stage of whole installation, screw seat simultaneously with installation handle and seal cavity type section bar fixed connection, at the later stage of whole installation, screw seat and seal cavity type section bar have preliminary fixed connection, therefore, the screw seat all has not had the risk that drops all the time, not only simple to operate is swift, moreover, can not appear in the installation screw seat and fall into the inside unable problem of taking out of seal cavity type section bar.

Drawings

FIG. 1 is a schematic view of a screw seat mounting assembly in a closed structure according to an embodiment of the present utility model, which is fixed to a mounting handle by a pre-positioning stud;

FIG. 2 is a schematic view of the structure of a mounting handle for transferring a screw seat from a process hole to the inside of a closed cavity profile;

fig. 3 is a longitudinal cross-sectional view of fig. 2.

In the figure:

10. the sealing cavity profile 11, the process hole 12, the first screw hole 13, the first fixing hole 20, the screw seat 21, the connecting plate 211, the second fixing hole 212, the second screw hole 22, the screw block 30, the mounting handle 31, the handle 32, the penetrating part 321, the screw seat connecting hole 40, the pre-positioning stud 50 and the fixing screw

Detailed Description

In order to better understand the aspects of the present utility model, the present utility model will be described in further detail with reference to the accompanying drawings and detailed description.

In the present specification, the terms "upper, lower, inner, outer" and the like are established based on the positional relationship shown in the drawings, and the corresponding positional relationship may be changed according to the drawings, so that the terms are not to be construed as absolute limitation of the protection scope; moreover, relational terms such as "first" and "second", and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.

Referring to fig. 1 to 3, fig. 1 is a schematic diagram illustrating a screw seat of a screw seat mounting assembly in a closed structure according to an embodiment of the present utility model being fixed to a mounting handle by a pre-positioning stud; FIG. 2 is a schematic view of the structure of a mounting handle for transferring a screw seat from a process hole to the inside of a closed cavity profile; fig. 3 is a longitudinal cross-sectional view of fig. 2.

As shown in the figure, in a specific embodiment, the screw seat installation component in the closed structure provided by the utility model mainly comprises three parts, namely the closed cavity section bar 10, the screw seat 20 and the installation handle 30, wherein the closed cavity section bar 10 is of a closed structure, and can be specifically a side beam of a chassis of a railway vehicle, and the like. However, even if the process hole 11 is formed in the closed cavity type profile 10 due to the small internal space, the human hand still cannot directly operate, and the screw seat 20 falls into the profile cavity and cannot be taken out during the process of installing the screw seat 20.

Of course, only a part of the closed cavity profile 10 is shown in the figures, not all the structures of the closed cavity profile 10 are shown, the cross section of which is rectangular, but in other embodiments the closed cavity profile 10 may have other various shapes.

In order to be able to put in the screw seat 20 during installation, a generally rectangular process hole 11 is provided at the top of the closed cavity section bar 10, and simultaneously, in order to match with the screw seat 20 and fix the screw seat 20, a first screw hole 12 and two first fixing holes 13 are provided at the top of the closed cavity section bar 10, the two first fixing holes 13 are respectively located at two sides of the first screw hole 12, one of the first fixing holes 13 is close to the process hole 11, and the other first fixing hole 13 is far away from the process hole 11.

The mounting handle 30 is bent to be L-shaped by adopting a plate, and is provided with a handle 31 and a penetrating part 32, wherein the handle 31 and the penetrating part 32 are arranged at an angle, the included angle between the handle 31 and the penetrating part is 90 degrees, and the front end of the penetrating part 32 is provided with a screw seat connecting hole 321. Of course, in other embodiments, the mounting knob 30 may be configured in a zig-zag or other shape that facilitates handling and prevents falling into the closed cavity profile 10.

The screw seat 20 is an M12 screw seat and consists of two parts of a connecting plate 21 and a threaded block 22, the connecting plate 21 is a rectangular plate with four right angles for chamfering, the threaded block 22 is in a cuboid shape, two second fixing holes 211 corresponding to the first fixing holes 13 are formed in the connecting plate 21, the two second fixing holes 211 are respectively located on two sides of the threaded block 22, and the connecting plate 21 and the threaded block 22 can be in an integrated structure.

The second screw hole 212 penetrates through the connecting plate 21 and the screw block 22, when the screw block 22 is attached to the inner surface of the closed cavity section bar 10 through the connecting plate 21, the second screw hole 212 of the screw block is aligned up and down with the first screw hole 12 of the closed cavity section bar 10 so that the closed cavity section bar 10 is connected with other components through bolts, and meanwhile, the two second fixing holes 211 are aligned up and down with the two first fixing holes 13 of the closed cavity section bar 10 so that the screw seat 20 is fixed inside the closed cavity section bar 10.

In operation, first, an M4 pre-positioning stud 40 is adopted to connect the screw seat 20 with the screw seat connecting hole 321 of the mounting handle 30, and the pre-positioning stud 40 is a stud with a head diameter equal to or smaller than the outer diameter of the threaded portion, for example, an inner hexagonal stud; then, the screw seat 20 is placed at a preset position in the closed cavity profile 10 through the process hole 11 by using the mounting handle 30, so that the hole positions are aligned; then, a M4 fixing screw 50 is screwed into the first fixing hole 13 and the second fixing hole 211 far away from the process hole 11, the screw seat 20 and the closed cavity section 10 are fixed in a preliminary step, and the fixing screw 50 is a screw with the head diameter larger than that of the first fixing hole 13; then an inner hexagonal wrench is used to pass through the first fixing hole 13 close to the process hole 11, and the pre-positioning stud 40 is screwed out; finally, the double-screw fixing of the screw seat 20 can be completed by replacing one M4 fixing screw 50.

Of course, depending on the mounting orientation, the screw seat 20 may also be arranged transversely with respect to the closed cavity profile 10, in which case the two second fixing holes 211 of the screw seat 20 are equally spaced from the process hole 11 after mounting, and optionally one of the second fixing holes 211 may be connected to the mounting handle 30 during mounting.

In addition, the screw base 20 may be fixed by a plurality of fixing screws, and if the screw base is fixed by a plurality of fixing screws, a second fixing hole 211, which is closer to the process hole 11 after the screw base 20 is mounted, may be selected to be connected with the mounting handle 30 during assembly.

Here, in the process of performing the operation, the screw seat 20 and the mounting handle 30 are connected to the outside of the closed cavity section bar 10, so that the screw seat 20 does not fall into the closed cavity section bar 10, and after the screw seat 20 and the mounting handle 30 are connected, even if the screw seat 20 is carelessly released from the hand during the operation, the screw seat 20 falls together with the mounting handle 30, at this time, the screw seat 20 and the mounting handle 30 are connected together, and the screw seat and the mounting handle are not excessively deep into the closed cavity section bar 10 as a whole under the blocking action of the mounting handle 30, and the mounting handle 30 has a certain length, so that the screw seat is very easy to take out, and then the operation is continued.

The above embodiments are merely preferred embodiments of the present utility model, and are not limited thereto, and on the basis of these, specific adjustments may be made according to actual needs, thereby obtaining different embodiments. For example, the angle between the grip 31 of the mounting knob 30 and the penetration portion 32 is an obtuse angle, or the screwing portion of the predetermined stud 40 is a straight line, a cross, a rice shape, a special shape, or the like. This is not illustrated here, as there are many possible implementations.

The mounting assembly is characterized in that a process hole 11 for placing a screw seat is formed in a closed cavity section bar 10, meanwhile, a mounting handle 30 is also arranged, when the mounting assembly is mounted, the screw seat 20 can be fixed on the mounting handle 30 through a pre-positioning stud 40, then the screw seat 20 is sent into a preset position in the closed cavity section bar 10 from the process hole 11 through the mounting handle 30, then the screw seat 20 and the closed cavity section bar 10 are fixed through a fixing screw 50, finally, the pre-positioning stud 40 is screwed out, and the pre-positioning stud 40 is replaced by the fixing screw 50, so that the assembly can be completed.

Because at the earlier stage of whole installation, screw seat 20 and installation handle 30 fixed connection, at the middle stage of whole installation, screw seat 20 simultaneously with installation handle 30 and seal cavity section bar 10 fixed connection, at the later stage of whole installation, screw seat 20 and seal cavity section bar 10 have preliminary fixed connection, therefore, screw seat 20 all does not have the risk that drops all the time, not only simple to operate is swift, moreover, can not appear in the installation screw seat 20 and fall into the inside unable problem of taking out of seal cavity section bar 10.

The screw seat installation component in the closed structure provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. The screw seat mounting assembly for the inside of the closed structure is characterized by comprising a closed cavity section bar (10), a screw seat (20) and a mounting handle (30), wherein the closed cavity section bar (10) is provided with a process hole (11), a first screw hole (12) and a first fixing hole (13), the screw seat (20) is provided with a second screw hole (212) and a second fixing hole (211), the first screw hole (12) corresponds to the second screw hole (212), and the second fixing hole (211) corresponds to the first fixing hole (13); the mounting handle (30) is used for transferring the screw seat (20) from the process hole (11) to the inside of the closed cavity profile (10), the mounting handle (30) is provided with a screw seat connecting hole (321), the screw seat connecting hole (321) is used for being connected with one of the second fixing holes (211) of the screw seat (20) through a pre-positioning stud (40), the other second fixing holes (211) of the screw seat (20) are used for being directly connected with the corresponding first fixing holes (13) through fixing screws (50), and the first fixing holes (13) corresponding to the pre-positioning stud (40) of the closed cavity profile (10) are arranged to be capable of being screwed out of the pre-positioning stud (40) so as to replace the pre-positioning stud (40) with the fixing screws (50).

2. The screw seat mounting assembly for the interior of the closed structure according to claim 1, wherein the mounting handle (30) comprises a handle (31) and a penetrating portion (32), the handle (31) and the penetrating portion (32) are arranged at an angle, and the screw seat connecting hole (321) is positioned at the front end of the penetrating portion (32).

3. The assembly according to claim 2, wherein the mounting knob (30) is L-shaped, and the angle between the handle (31) and the penetration portion (32) is a right angle or an obtuse angle.

4. The enclosure internal screw mount assembly of claim 1, wherein the pre-positioning stud (40) is a stud having a head diameter equal to or less than an outer diameter of the threaded portion thereof.

5. The enclosure internal screw mount assembly of claim 4, wherein the pre-positioning stud (40) is a hexagon socket stud.

6. The enclosure internal screw mount assembly of claim 1, wherein the set screw (50) is a screw having a head diameter greater than the first set hole diameter.

7. The internal screw seat mounting assembly of a closed structure according to any of claims 1 to 6, wherein the screw seat (20) comprises a connecting plate (21) and a threaded block (22), the second screw hole (212) penetrates the connecting plate (21) and the threaded block (22), and the threaded block (22) is attached to the inner surface of the closed cavity profile (10) through the connecting plate (21).

8. The screw seat mounting assembly for the interior of the closed structure according to claim 7, wherein two second fixing holes (211) are formed in the connecting plate (21), and the two second fixing holes (211) are respectively located at two sides of the screw block (22).

9. The assembly according to claim 8, characterized in that the closed cavity profile (10) is provided with two first fixing holes (13), one of which is close to the process hole (11) and the other is remote from the process hole (11).

10. The internal screw mount assembly of claim 9, wherein the screw mount attachment hole (321) is configured to attach the screw mount (20) to a second attachment hole (211) of the process hole (11) via a pre-positioning stud (40).