Multifunctional cantilever base

Abstract

A multifunctional cantilever base comprises a base body and two U-shaped lugs, a pair of connecting holes are formed in the bottom of the base body, a pair of convex lugs are symmetrically arranged on the upper portion of the base body, and a pair of convex ribs are vertically arranged on the inner side of each convex lug; a pair of convex lugs is horizontally provided with a pair of through holes, the through holes are located between the convex ribs, the bottom ends of the U-shaped double lugs penetrate through the through holes through first pins to be hinged to the convex lugs, and the bottom ends of the U-shaped double lugs are located between the convex ribs. The two pairs of convex ribs are arranged on the inner sides of the lugs of the base to form an anti-rotating table structure, so that the rotating angle of the U-shaped double lugs is limited within a certain range, and a cantilever system is prevented from generating large deflection along with a cable; the inner side of the first pin cap is arranged to be an inclined face, the contact area is increased, and the connection stability and the load capacity are improved. The elastic cylindrical pin is used for replacing a traditional cotter pin, vibration can be effectively absorbed, and the shock resistance and the self-locking capacity of connection are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrified railway contact network, and particularly relates to a multifunctional wrist arm base. Background Art

[0002] In high-speed railway contact network systems, the arm base plays a crucial role in supporting and stabilizing the contact network. The development of high-speed railways has placed higher demands on the arm base's stability, vibration resistance, and weight. During actual line operation, the contact wire presents a risk of breakage. Upon a break, the arm base system would experience significant deflection along with the wire, leading to failure or even breakage of the contact network. Existing arm bases fail to effectively limit the arm's deflection range to a safe range in the event of a contact wire break, preventing significant deflection along with the wire, which could lead to failure or even breakage of the contact network. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the utility model provides a multifunctional wrist-arm base.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] A multifunctional wrist-arm base comprises a base and "U"-shaped ears, wherein a pair of connecting holes are provided at the bottom of the base, and a pair of symmetrically arranged lugs are provided on the upper portion of the base, and a pair of convex ribs are vertically provided on the inner side of each lug; a pair of through holes are horizontally provided on the pair of lugs, and the through holes are located in the middle of the pair of convex ribs, and the bottom ends of the "U"-shaped ears are hinged to the pair of lugs by means of a first pin passing through the pair of through holes, and the bottom ends of the "U"-shaped ears are located between the pair of convex ribs.

[0006] Furthermore, the outer side surface of each lug is an inclined surface inclined inwardly, and the inner side of the nail cap of the first pin is an inclined surface adapted to the inclined surface.

[0007] Furthermore, an elastic cylindrical pin is inserted into the mounting hole at the end of the first pin after passing through the pair of through holes.

[0008] Furthermore, a second pin is installed on the top of the "U"-shaped double ears.

[0009] Beneficial effects of the utility model:

[0010] 1. The utility model forms an anti-rotation platform structure by arranging two pairs of convex ribs on the inner side of the base lugs. The bottom end of the "U"-shaped lugs is stuck between each pair of convex ribs, so that the rotation angle of the "U"-shaped lugs is limited to a certain range, preventing the arm-wrist system from generating a large deflection along the cable, which may lead to failure or even breakage of the contact network.

[0011] 2. The utility model sets the inner side of the first pin cap as an inclined surface so that it fits with the outer inclined surface of the base lug, increasing the contact area and improving the stability and load capacity of the connection.

[0012] 3. The utility model uses elastic cylindrical pins to replace traditional cotter pins, which can effectively absorb vibrations, reduce the impact of changes in the external environment on the stability of the connection, improve the seismic resistance and self-locking ability of the connection, and thus improve the reliability of the high-speed railway contact network system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the base structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the first pin structure of the utility model;

[0016] Figure 4 This is a state diagram used in the present utility model.

[0017] Figure numerals: base 1, lug 1-1, "U"-shaped double ears 2, rib 3, through hole 4, connecting hole 5, first pin 6, inclined surface 6-1, mounting hole 6-2, elastic cylindrical pin 7, second pin 8, insulator 9, pillar 10. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-3 The present invention is further described in detail with reference to the following specific embodiments, but the embodiments of the present invention are not limited thereto.

[0019] A multifunctional wrist-arm base comprises a base 1 and "U"-shaped ears 2, wherein a pair of connecting holes 5 are provided at the bottom of the base 1, and the upper portion of the base 1 is a pair of symmetrically arranged lugs 1-1, and each lug 1-1 has a pair of vertical ribs 3 on the inner side; a pair of through holes 4 are horizontally provided on the pair of lugs 1-1, and the through holes 4 are located in the middle of the pair of ribs 3, the bottom ends of the "U"-shaped ears 2 are hinged to the pair of lugs 1-1 by means of a first pin 6 passing through the pair of through holes 4, and the bottom ends of the "U"-shaped ears 2 are located between the pair of ribs 3.

[0020] In one embodiment, the outer side surface of each lug 1-1 is an inclined surface inclined inward, and the inner side of the nail cap of the first pin 6 is an inclined surface 6-1 adapted to the inclined surface; an elastic cylindrical pin 7 is inserted into the end mounting hole 6-2 after the first pin 6 passes through a pair of through holes 4; and a second pin 8 is installed at the top of the "U"-shaped double ears 2.

[0021] Further, such as Figure 2As shown, the rib 3 is set at an appropriate position away from the through hole 4 and matches the designed rotation range of the "U"-shaped double ears 2 to prevent the cantilever system from rotating ineffectively.

[0022] like Figure 4 As shown, during installation, the base 1 is first fixedly connected to the support 10 by bolts passing through a pair of connection holes 5, and then the "U"-shaped ears 2 are hinged to the insulator 9 via a second pin 8. After installation, the multifunctional cantilever base can stably support and position the cantilever. The anti-rotation platform structure formed by the two pairs of ribs can limit the rotation range of the "U"-shaped ears 2, thereby preventing the cantilever system from experiencing large deflections along the cable, which could lead to failure or even breakage of the contact network. This greatly improves the safety and reliability of the high-speed railway contact network.

[0023] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A multifunctional wrist-arm base, characterized by: The invention comprises a base (1) and U-shaped double ears (2), wherein a pair of connecting holes (5) are provided at the bottom of the base (1), and the upper part of the base (1) is a pair of symmetrically arranged lugs (1-1), and each lug (1-1) has a pair of ribs (3) vertically arranged on the inner side; a pair of through holes (4) are horizontally provided on the pair of lugs (1-1), and the through holes (4) are located in the middle of the pair of ribs (3); the bottom ends of the U-shaped double ears (2) are hinged to the pair of lugs (1-1) through the pair of through holes (4) via a first pin (6), and the bottom ends of the U-shaped double ears (2) are located between the pair of ribs (3).

2. The multifunctional arm base according to claim 1, characterized in that: The outer side surface of each lug (1-1) is a sloped surface inclined inwardly, and the inner side of the nail cap of the first pin (6) is a sloped surface (6-1) adapted to the sloped surface.

3. The multifunctional arm base according to claim 2, characterized in that: An elastic cylindrical pin (7) is inserted into the end mounting hole (6-2) after the first pin (6) passes through a pair of through holes (4).

4. A multifunctional arm base according to claim 1, 2 or 3, characterized in that: The top ends of the "U"-shaped ears (2) are provided with a second pin (8).

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