Large-limit cantilever heightening base

Abstract

The utility model relates to a large-limit cantilever heightening base. The existing large-limit cantilever suspension mounting structure has the problems of complex structure, more connecting nodes and low overall strength. The base comprises a supporting frame, a double-lug connecting plate and double rotary lugs. The supporting frame is a U-shaped integrated frame and comprises an upper transverse rod part, an outer vertical rod part and a lower inclined rod part, and the end of the upper transverse rod part and the end of the lower inclined rod part are fixed to the steel columns through installation pieces. The rotary double-lug is connected to the double-lug connecting plate through a pin, and the double-lug connecting plate is connected to the outer vertical rod part of the supporting frame. The support frame is used for connecting a steel column or a concrete column with a cantilever in a contact network system, can meet the installation requirement of a large-limit cantilever after being additionally installed, is simple in structure and convenient to install and use, adopts an integrated frame structure, and adopts an arc-shaped part for transition of each part, so that connection nodes are reduced, and the overall strength is obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of catenary wrist arm fittings, in particular to a large clearance wrist arm heightening base. Background Art

[0002] In the construction of high-speed railways, there are many situations where catenary poles are too far from the center of the line, resulting in an excessive side clearance. Due to the large clearance characteristics of the line, the length of the wrist arm will be too long. Because of the structural characteristics of the wrist arm cantilever, the excessive length of the wrist arm during use will cause insufficient structural strength and cannot meet the use requirements.

[0003] Currently, it is possible to install a large clearance frame structure between the wrist arm and the steel column or concrete column to meet the requirements of catenary wrist arm installation, improving the reliability and stability of catenary wrist arm suspension installation. However, the existing large clearance frame structure for wrist arm suspension installation is relatively complex, with many connection nodes, resulting in low overall strength and unable to firmly connect the wrist arm to the steel column.

[0004] Therefore, it is necessary to optimize the wrist arm suspension installation structure to overcome the above defects. Summary of the Invention

[0005] The purpose of the utility model is to provide a large clearance wrist arm heightening base to solve the problems of complex structure, many connection nodes and low overall strength existing in the existing large clearance wrist arm suspension installation structure.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:[[]]

[0007] A large clearance wrist arm heightening base, the base includes a support frame, a double-ear connecting plate and a rotating double-ear;

[0008] The support frame is a U-shaped integral frame, including an upper crossbar part, an outer vertical bar part and a lower diagonal bar part. The ends of the upper crossbar part and the lower diagonal bar part are fixed to the steel column through mounting parts;

[0009] The rotating double-ear is connected to the double-ear connecting plate through a pin, and the double-ear connecting plate is connected to the outer vertical bar part of the support frame.

[0010] Further, the upper crossbar part and the outer vertical bar part are transitioned through an arc part, the outer vertical bar part and the lower diagonal bar part are transitioned through an arc part, and the end of the lower diagonal bar part fixed to the steel column is transitioned through an arc part.

[0011] Further, the mounting part includes a fixed angle steel, a bolt and a back angle steel;

[0012] The fixed angle steel is fixed to the ends of the upper cross bar portion and the lower inclined bar portion, the back angle steel is fixed to the outer side of the steel column, and the bolt passes through the steel column and is connected between the fixed angle steel and the back angle steel.

[0013] Furthermore, the double-ear connecting plate includes a connecting member and double-ear plates, and the double-ear plates are fixed to the side surface of the connecting member.

[0014] The connecting member is fixed to the outer vertical bar portion, and the rotating double-ear is connected to the double-ear plates through a pin.

[0015] Furthermore, the double-ear plates are U-shaped and are provided with pin holes opposite to each other vertically.

[0016] Furthermore, the rotating double-ear is U-shaped, is provided with mounting holes opposite to each other horizontally and is provided with a wrist arm connecting bolt, and pin holes matching with the double-ear plates are provided at the ends of the rotating double-ear.

[0017] Furthermore, there is one support frame, the connecting member is a sleeve, and the sleeve is sleeved on the outer vertical bar portion.

[0018] Furthermore, there are two support frames, the connecting member is a horizontal longitudinal bar, and the horizontal longitudinal bar is fixed to the outer vertical bar portion.

[0019] Furthermore, two double-ear plates are provided on the horizontal longitudinal bar, and one rotating double-ear is mounted on each double-ear plate.

[0020] Furthermore, a connecting plate is fixed between the two support frames.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] The present utility model provides a large clearance wrist arm heightening base for connecting a steel column or a concrete column with a wrist arm in a catenary system. After installation, it can meet the installation requirements of a large clearance wrist arm, has a simple structure, and is convenient for installation and use. The support frame adopts an integral frame structure, and each part is transitioned through an arc portion, reducing the connection nodes and significantly improving the overall strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1It is a structural schematic diagram of the present utility model.

[0025] Figure 2 It is a top view of the wrist arm heightening base with single-rotation double ears in Embodiment 1 of the present utility model.

[0026] Figure 3 It is a top view of the wrist arm heightening base with double-rotation double ears in Embodiment 2 of the present utility model.

[0027] The identifications in the figure are as follows:

[0028] 1 - steel column, 2 - back angle steel, 3 - bolt, 4 - fixed angle steel, 5 - double-ear connecting plate, 6 - pin, 7 - rotating double ears, 8 - support frame, 9 - connecting plate. Specific embodiments

[0029] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "setting", etc. should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] The present utility model provides a large clearance wrist arm heightening base, which can increase the distance between the center line of the railway track and the steel column or concrete column, and can freely adjust the installation spacing of the upper and lower wrist arms. Specifically, as Figure 1 , the main components of the base include a support frame 8, a double-ear connecting plate 5, and rotating double ears 7.

[0033] The support frame 8 is a U-shaped integral frame, which is formed by bending a channel steel, and is integrally pressed and bent, and has high structural strength. The support frame 8 includes an upper cross bar, an outer vertical bar and a lower oblique bar, and the ends of the upper cross bar and the lower oblique bar are fixed to the steel column 1 (or concrete column) through a mounting piece to form a right-angled trapezoidal frame structure. The upper cross bar and the outer vertical bar transition through an arc portion, the outer vertical bar and the lower oblique bar transition through an arc portion, and the end of the lower oblique bar fixed to the steel column 1 transitions through an arc portion. The support frame 8 not only adopts an integrated structure to reduce the component connection nodes and improve the overall strength, but also adopts arc transition at each corner, further reducing stress concentration, more reasonable force, and can effectively improve the installation stability, especially in terms of wind resistance. In some embodiments, a vertical bar can be further added between the end of the upper cross bar and the end of the lower oblique bar to improve stability. The support frame 8 can be made of Q235 material (GB / T700-2006), which has a low carbon content and good strength, plasticity and other properties. The support frame 8 adopts a 3-level hot-dip galvanizing anti-corrosion process to prevent corrosion, which can effectively extend the service life of the base.

[0034] The mounting parts include a fixed angle steel 4, a bolt 3 and a back angle steel 2. The fixed angle steel 4 is fixed to the ends of the upper cross bar and the lower oblique bar, and the number is two. The back angle steel 2 is fixed to the outer side of the steel column 1, and the number is also two. The bolt 3 passes through the steel column 1 and is connected between the fixed angle steel 4 and the back angle steel 2 corresponding to the horizontal direction.

[0035] The double-ear connecting plate 5 comprises a connecting member and a double-ear plate, wherein the double-ear plate is fixed to the side of the connecting member, and the connecting member is fixed to the outer vertical rod portion. The double-ear plate is U-shaped and has vertically opposite pin holes.

[0036] The rotating double ears 7 are U-shaped, with horizontally opposite mounting holes and arm connecting bolts, and the ends of the rotating double ears 7 are provided with pin holes that match the double ear plates, and the rotating double ears 7 are connected to the double ear connecting plate 5 through the pins 6. Specifically, the rotating double ears 7 are connected to the double ear plates through the pins 6. The rotating double ears 7 can rotate bidirectionally around the pins 6 in a horizontal plane.

[0037] According to different installation requirements, the base of the utility model can have at least the following two structural forms:

[0038] Example 1: Single Rotating Double Ear Type

[0039] like Figure 2 In this embodiment, the support frame 8 is provided with one. The connecting member specifically adopts a sleeve structure, and the sleeve is sleeved on the outer vertical rod. The entire base has a rotating double ear 7.

[0040] Example 2: Dual rotating ears

[0041] like Figure 3, in this embodiment, two support frames 8 are provided. Among them, the connecting member specifically adopts a horizontal and vertical rod structure, and the horizontal and vertical rod is fixed to the outer vertical rod part. Two double-ear plates are provided on the horizontal and vertical rod, and one rotating double-ear 7 is installed on each double-ear plate. The entire base has two rotating double-ears 7 and can be installed with double catenary arms. To improve the strength of the entire base, a longitudinal connecting plate 9 can also be fixed between the two support frames 8. To prevent insufficient structural strength caused by torque imbalance in the form of double catenary arms, the structural features of symmetry and reduction of the cantilever length of the main channel steel can be specifically selected.

[0042] The large clearance catenary arm heightening base of the present utility model can be used to connect a steel column or a concrete column with a catenary arm in a catenary system. After installation, it can meet the installation of a large clearance catenary arm, and has a simple structure, and is convenient for installation and use.

[0043] The above uses specific examples to elaborate on the present utility model, which is only used to help understand the present utility model and is not intended to limit the present utility model. For those skilled in the technical field to which the present utility model belongs, according to the idea of the present utility model, several simple deductions, deformations or replacements can also be made.

Claims

1. A large-limit wrist arm heightening base, characterized in that: The base comprises a supporting frame (8), a double-ear connecting plate (5) and a rotating double-ear (7); The support frame (8) is a U-shaped integrated frame, comprising an upper cross bar, an outer vertical bar and a lower oblique bar, and the ends of the upper cross bar and the lower oblique bar are fixed to the steel column (1) through mounting parts; The rotating double ears (7) are connected to the double ear connecting plate (5) via pins (6), and the double ear connecting plate (5) is connected to the outer vertical rod portion of the supporting frame (8).

2. A large-limit arm heightening base according to claim 1, characterized in that: The upper horizontal rod portion and the outer vertical rod portion are transitioned through an arc portion, the outer vertical rod portion and the lower oblique rod portion are transitioned through an arc portion, and the end of the lower oblique rod portion fixed to the steel column (1) is transitioned through an arc portion.

3. A large-limit arm heightening base according to claim 1, characterized in that: The mounting member comprises a fixed angle steel (4), a bolt (3) and a back angle steel (2); The fixed angle steel (4) is fixed to the end of the upper cross bar and the end of the lower inclined bar, the back angle steel (2) is fixed to the outer side of the steel column (1), and the bolt (3) passes through the steel column (1) and is connected between the fixed angle steel (4) and the back angle steel (2).

4. The large-limit arm heightening base according to claim 1, characterized in that: The double-ear connecting plate (5) comprises a connecting piece and a double-ear plate, wherein the double-ear plate is fixed on the side of the connecting piece; The connecting member is fixed to the outer vertical rod portion, and the rotating double ears (7) are connected to the double ear plate via pins (6).

5. A large-limit arm heightening base according to claim 4, characterized in that: The double-ear plate is U-shaped and is provided with vertically opposite pin holes.

6. A large-limit arm heightening base according to claim 5, characterized in that: The rotating double ears (7) are U-shaped, with horizontally opposite mounting holes and arm connecting bolts, and the ends of the rotating double ears (7) are provided with pin holes that match the double ear plates.

7. A large-limit arm heightening base according to claim 6, characterized in that: The support frame (8) is provided with a connecting piece which is a sleeve, and the sleeve is fitted onto the outer vertical rod portion.

8. The large-limit arm heightening base according to claim 6, characterized in that: The support frames (8) are provided with two, the connecting members are horizontal longitudinal rods, and the horizontal longitudinal rods are fixed to the outer vertical rod parts.

9. A large-limit arm heightening base according to claim 8, characterized in that: Two double-ear plates are arranged on the horizontal longitudinal rod, and one rotating double ear (7) is installed on each of the double-ear plates.

10. A large-limit arm heightening base according to claim 9, characterized in that: A connecting plate (9) is fixed between the two support frames (8).

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