An integral wrist arm mounting seat and an integral wrist arm mounting structure

Abstract

This application discloses a mounting base for an integral wrist arm and a mounting structure for the integral wrist arm, relating to the technical field of electrified rail transit. The mounting base includes a post end and a pipe end fixedly connected to the post end. The pipe end includes: an intermediate body fixedly connected to the post end; an intermediate extrusion assembly fixedly connected to the intermediate body and used to extrude the inner wall of a glass fiber tube; and an outer extrusion sleeve fixedly connected to the intermediate body and used to extrude the outer wall of the glass fiber tube. The present application provides a tighter connection between the glass fiber tube and the mounting base, thereby improving the connection accuracy and strength between the glass fiber tube and the mounting base.

Description

Technical Field

[0001] The present application relates to the technical field of electrified rail transit, and in particular to a mounting seat of an integral cantilever and a mounting structure of the integral cantilever. Background Art

[0002] The catenary system is a transmission line erected above rail transit lines, supplying power to electric locomotives. The catenary support device, installed on support columns, supports the catenary suspension and transmits the load. In practice, the suspension device must possess sufficient mechanical strength, be simple and lightweight, and be easy to install, repair, and replace. Existing catenary support devices primarily consist of steel arm supports and aluminum alloy arm supports. Both types of support devices consist of dozens of components connected by hinges and bolts. This makes installation and maintenance labor-intensive, quality assurance difficult, and the insulators expensive.

[0003] In the related art, in order to simplify the installation workload, there are also integral arms. For example, the application publication number CN107379578A discloses a forming method of a contact network support device, which forms an integral arm by wrapping glass fiber around the core tube and then splicing and bonding it, which is convenient for installation and saves costs.

[0004] However, the fiberglass tube and the mounting seat of this integral arm are fixed by glue, and the connection accuracy and strength between the fiberglass tube and the mounting seat are insufficient. The fiberglass tube and the inner wall of the mounting seat are prone to loosening, resulting in uneven force. For example, the fiberglass tube is not subjected to force on the entire surface, but is subjected to force on a certain line or a very small part of the surface, which eventually leads to the rupture of the fiberglass tube and the inability of the arm to effectively support the contact network. Summary of the Invention

[0005] In order to ensure that the glass fiber tube does not break and to improve the connection accuracy and strength between the glass fiber tube and the mounting seat, the present application provides a mounting seat for an integral wrist arm and a mounting structure for the integral wrist arm.

[0006] On the one hand, the present application provides an integral wrist arm mounting base, which adopts the following technical solution:

[0007] A mounting base for an integral wrist arm includes a post end and a pipe end fixedly connected to the post end; the pipe end includes:

[0008] An intermediate body, fixedly connected to the post end;

[0009] an intermediate extrusion assembly, fixedly connected to the intermediate body and used for extruding the inner wall of the glass fiber tube;

[0010] The outer extrusion sleeve is fixedly connected to the intermediate body and is used for extruding the outer wall of the glass fiber tube.

[0011] By adopting the above technical solution, after the mounting base of the integral wrist arm is connected to the fiberglass tube, the intermediate extrusion assembly and the outer extrusion sleeve respectively squeeze the inner and outer walls of the fiberglass tube to achieve an interference fit. This arrangement also limits the space in which the fiberglass tube can break, preventing it from breaking. Compared to the original bonding method, the solution of this application achieves a tighter connection between the fiberglass tube and the mounting base, improving the connection precision and strength of the fiberglass tube and the mounting base.

[0012] Optionally, the intermediate extrusion assembly includes a plurality of extrusion sheets, and the plurality of extrusion sheets extrude the inner wall of the glass fiber tube or extrude the intermediate plate of the glass fiber tube.

[0013] By adopting the above technical solution, the glass fiber tube can be provided with multiple intermediate plates. After the glass fiber tube and the mounting seat are connected, an intermediate plate is sandwiched between every two adjacent extruded sheets. The two adjacent extruded sheets clamp the intermediate plate to further strengthen the connection strength between the glass fiber tube and the mounting seat.

[0014] Optionally, the extruded sheet is longer in the horizontal direction than in the vertical direction and is in an oblate shape.

[0015] By adopting the above technical solution, the glass fiber tube is mainly subjected to vertical force when supporting the contact network, and the long and flat extruded sheet can increase the force area between the glass fiber tube and the mounting seat, thereby improving the connection stability between the glass fiber tube and the mounting seat.

[0016] Optionally, the end of the extruded sheet first inserted into the glass fiber tube is an arc-shaped end.

[0017] By adopting the above technical solution, the extruded sheet can be easily inserted into the glass fiber tube.

[0018] Optionally, the opening of the outer extrusion sleeve is provided with a chamfer to facilitate the insertion of the glass fiber tube.

[0019] By adopting the above technical solution, the glass fiber tube is easily inserted into the outer extrusion sleeve.

[0020] Optionally, the intermediate extrusion assembly extends beyond the opening of the outer extrusion sleeve.

[0021] By adopting the above technical solution, it is easy to align the mounting seat and the glass fiber tube, and the lengthening of the middle extrusion piece also has the effect of strengthening the connection strength.

[0022] Optionally, the intermediate body includes an integrally formed rear bottom plate and a boss, the inner wall of the outer extrusion sleeve is connected to the boss, and the end of the outer extrusion sleeve is connected to the rear bottom plate.

[0023] By adopting the above technical solution, the boss plays a role in positioning the outer extrusion sleeve, which is beneficial to ensuring that the inner wall of the outer extrusion sleeve contacts the glass fiber tube evenly.

[0024] Optionally, a welding portion is provided between the intermediate body and the outer extrusion sleeve, and the welding portion is located between the side of the rear bottom plate and the end of the outer extrusion sleeve.

[0025] By adopting the above technical solution, the welding part plays a role in strengthening the connection between the intermediate body and the outer extrusion sleeve, and the position of the welding part is selected between the side of the rear bottom plate and the end of the outer extrusion sleeve, rather than the entire surface between the rear bottom plate and the outer extrusion sleeve, thereby avoiding the influence of the welding step on the accuracy of the mounting seat, and facilitating ensuring that the inner wall of the outer extrusion sleeve and the glass fiber tube are evenly in contact.

[0026] On the one hand, the present application provides an installation structure for an integral wrist arm, comprising the above-mentioned mounting base for the integral wrist arm and a fiberglass tube, wherein a compression groove is provided on the outer side of the outer extrusion sleeve.

[0027] By adopting the above technical solution, after the outer extrusion sleeve is connected to the glass fiber tube, the outer wall of the outer extrusion sleeve is squeezed to press out the compression groove, which is beneficial to further strengthen the connection strength between the outer extrusion sleeve and the glass fiber tube.

[0028] To summarize, the outer extrusion sleeve and the extrusion sheet in the present application cooperate to clamp the glass fiber tube in different directions to an interference fit. The entire surface of the glass fiber tube and the mounting seat is in contact with each other, which makes it difficult for the glass fiber tube to loosen and break. The outer extrusion sleeve and the extrusion sheet also limit the space in which the glass fiber tube can break, further avoiding the breakage of the glass fiber tube. In addition, the middle plate of the glass fiber tube is clamped to an interference fit between the two adjacent extrusion sheets, further enhancing the connection accuracy and strength between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic cross-sectional view of a local structure of an embodiment of the present application;

[0030] Figure 2 This is a schematic structural diagram highlighting the extrusion sheet in an embodiment of the present application;

[0031] Figure 3 yes Figure 1 A magnified schematic diagram of point A in the middle;

[0032] Figure 4 This is a schematic diagram of the partial structure after the mounting base and the glass fiber tube are connected in the embodiment of the present application.

[0033] Figure numerals: 1, column end; 2, pipe end; 3, intermediate body; 4, intermediate extrusion assembly; 5, outer extrusion sleeve; 6, rear bottom plate; 7, boss; 8, extrusion sheet; 9, arc end; 10, chamfer; 11, welding part; 12, clamping groove. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 This application is described in further detail.

[0035] The embodiment of the present application discloses an integral wrist arm mounting base, referring to Figure 1 , including a column end 1 and a pipe end 2 fixedly connected to the column end 1. The column end 1 is used to connect to the column body, specifically, it can be connected to the fixings on the column body by bolts. The pipe end 2 is used to connect to the integral arm, specifically, to the fiberglass tube of the arm. In this embodiment, both the column end 1 and the pipe end 2 are stainless steel.

[0036] Reference Figure 1 The connecting pipe end 2 includes an intermediate body 3, an intermediate extrusion assembly 4 and an outer extrusion sleeve 5. The intermediate body 3 includes an integrally formed rear base plate 6 and a boss 7. The end of the rear base plate 6 away from the boss 7 is fixedly connected to the connecting column end 1. The boss 7 is arranged in a cylindrical shape, and the outer extrusion sleeve 5 is arranged in an annular shape. The inner wall of the outer extrusion sleeve 5 is connected to the side wall of the boss 7, and the end of the outer extrusion sleeve 5 facing the rear base plate 6 is connected to one end of the back-connecting column end 1 of the rear base plate 6. The boss 7 plays a role in positioning the outer extrusion sleeve 5, which is conducive to ensuring that the inner wall of the outer extrusion sleeve 5 is evenly in contact with the glass fiber tube.

[0037] Reference Figure 1 The intermediate extrusion assembly 4 includes multiple extrusion plates 8 fixed to the boss 7, three of which are used in this example. After the mounting base of the integral arm is connected to the fiberglass tube, the extrusion plates 8 squeeze the inner wall of the fiberglass tube to achieve an interference fit. Simultaneously, the outer extrusion sleeve 5 squeezes the outer wall of the fiberglass tube to achieve an interference fit, thereby achieving a tight connection between the fiberglass tube and the mounting base. The outer extrusion sleeve 5 and the extrusion plates 8 also limit the space in which the fiberglass tube can break, preventing it from rupturing and improving the precision and strength of the connection between the fiberglass tube and the mounting base.

[0038] Reference Figure 1 、 Figure 2 Multiple intermediate plates can be arranged in the glass fiber tube. Two intermediate plates are correspondingly arranged in the glass fiber tube corresponding to the mounting seat of the integral wrist arm disclosed in this embodiment. One intermediate plate of the glass fiber tube is squeezed between two adjacent extrusion sheets 8 to achieve an interference fit, which can further strengthen the connection strength between the glass fiber tube and the mounting seat.

[0039] Reference Figure 1The end of the extrusion piece 8 away from the boss 7 is first inserted into one end of the glass fiber tube and extends beyond the opening of the outer extrusion sleeve 5. When the mounting base is connected to the glass fiber tube, it is convenient to align the two, and the lengthening of the extrusion piece 8 also has the effect of strengthening the connection strength.

[0040] Reference Figure 1 The end of the extrusion piece 8 that is first inserted into the glass fiber tube is an arcuate end 9, and the opening of the outer extrusion sleeve 5 is provided with a chamfer 10 for facilitating the insertion of the glass fiber tube. The arrangement of the arcuate end 9 and the chamfer 10 facilitates the plugging and matching of the glass fiber tube and the outer extrusion sleeve 5.

[0041] Reference Figure 1 、 Figure 2 The extruded piece 8 is longer in the horizontal direction than in the vertical direction, and is oblate. When supporting the contact network, the fiberglass tube is primarily subjected to vertical forces. The oblate shape of the extruded piece 8 can increase the force-bearing area between the fiberglass tube and the mounting base, thereby improving the connection stability between the fiberglass tube and the mounting base.

[0042] Reference Figure 1 、 Figure 3 A welding portion 11 is provided between the intermediate body 3 and the outer extrusion sleeve 5. The welding portion 11 is located between the side of the rear bottom plate 6 and the end of the outer extrusion sleeve 5 facing the rear bottom plate 6. Specifically, the welding portions 11 can be evenly distributed along the outer extrusion sleeve 5 in a ring shape, or can be arranged in a ring shape around the outer extrusion sleeve 5. The welding portion 11 serves to strengthen the connection between the intermediate body 3 and the outer extrusion sleeve 5. The location of the welding portion 11 is selected between the side of the rear bottom plate 6 and the end of the outer extrusion sleeve 5, rather than the entire surface between the rear bottom plate 6 and the outer extrusion sleeve 5. This avoids the influence of the welding step on the accuracy of the mounting seat and helps to ensure that the inner wall of the outer extrusion sleeve 5 and the glass fiber tube are evenly in contact.

[0043] The specific effects are as follows:

[0044] After the mounting seat of the integral wrist arm is connected to the glass fiber tube, the outer extrusion sleeve 5 cooperates with the middle extrusion assembly 4 to clamp the glass fiber tube in different directions to an interference fit. The entire surface of the glass fiber tube and the mounting seat is in contact with each other, which is not easy to loosen and cause the glass fiber tube to break. The outer extrusion sleeve 5 and the extrusion sheet 8 also limit the space where the glass fiber tube can break, avoiding the glass fiber tube from breaking, and having the effect of strengthening the connection accuracy and strength between the mounting seat and the glass fiber tube.

[0045] Reference Figure 4This embodiment also discloses an integral arm mounting structure, comprising the integral arm mounting base and a fiberglass tube. A compression groove 12 is extruded on the outer wall of the outer extrusion sleeve 5. After the outer extrusion sleeve 5 is connected to the fiberglass tube, the outer wall of the outer extrusion sleeve 5 is extruded to form the compression groove 12, thereby further strengthening the connection strength between the outer extrusion sleeve 5 and the fiberglass tube.

[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A mounting base for an integral wrist arm, comprising a post end (1) and a pipe end (2) fixedly connected to the post end (1); characterized in that: The pipe end (2) includes: An intermediate body (3) is fixedly connected to the post end (1); an intermediate extrusion assembly (4), fixedly connected to the intermediate body (3) and used for extruding the inner wall of the glass fiber tube; The outer extrusion sleeve (5) is fixedly connected to the intermediate body (3) and is used to extrude the outer wall of the glass fiber tube.

2. The mounting base of the integral wrist arm according to claim 1, characterized in that: The intermediate extrusion assembly (4) comprises a plurality of extrusion sheets (8), and the plurality of extrusion sheets (8) extrude the inner wall of the glass fiber tube or extrude the intermediate plate of the glass fiber tube.

3. The mounting base of the integral wrist arm according to claim 2, characterized in that: The extruded sheet (8) is longer in the horizontal direction than in the vertical direction and is in an oblate shape.

4. The mounting base of the integral wrist arm according to claim 2, characterized in that: The end of the extrusion sheet (8) first inserted into the glass fiber tube is the arc-shaped end (9).

5. The mounting base of the integral wrist arm according to claim 1, characterized in that: The opening of the outer extrusion sleeve (5) is provided with a chamfer (10) for facilitating the insertion of the glass fiber tube.

6. The mounting base of the integral wrist arm according to claim 2, characterized in that: The intermediate extrusion assembly (4) extends beyond the opening of the outer extrusion sleeve (5).

7. The mounting base of the integral wrist arm according to claim 1, characterized in that: The intermediate body (3) includes an integrally formed rear bottom plate (6) and a boss (7); the inner wall of the outer extrusion sleeve (5) is connected to the boss (7); and the end of the outer extrusion sleeve (5) is connected to the rear bottom plate (6).

8. The mounting base of the integral wrist arm according to claim 7, characterized in that: A welding portion (11) is provided between the intermediate body (3) and the outer extrusion sleeve (5), and the welding portion (11) is located between the side of the rear bottom plate (6) and the end of the outer extrusion sleeve (5).

9. An integral wrist arm mounting structure, characterized in that: It comprises the mounting seat of the integral wrist arm as claimed in any one of claims 1 to 8 and a glass fiber tube, and a compression groove (12) is provided on the outside of the outer extrusion sleeve (5).

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