Bolt-free integrally-formed positioning wire clamp

Abstract

The utility model discloses a bolt-free integrally-formed positioning wire clamp. The positioning wire clamp is composed of a main clamping plate and an auxiliary clamping plate which are completely the same, the main clamping plate and the auxiliary clamping plate each comprise a body, the middle of the upper end of each body extends upwards to form a boss, and the inner side of each boss is in a circular arc shape. The middle part of the upper end of the inner side of the body is provided with an arc rib and two lugs, one lug is horizontally provided with an elliptical hole, the outer end of the other lug horizontally protrudes to form an elliptical cylinder, the upper parts of the front end and the rear end of the body are respectively provided with inclined surfaces which are inclined along the line direction and have consistent angles, and the inner side of the lower part of the body is provided with a tooth-shaped angle for clamping a contact line; the main clamping plate and the auxiliary clamping plate are oppositely arranged, the elliptic cylinders are inserted into the elliptic holes in the opposite sides, the main clamping plate and the auxiliary clamping plate are pushed to enable the front end faces and the rear end faces of bodies of the main clamping plate and the auxiliary clamping plate to be flush, then the inclined faces are completely attached, and the center lines of the elliptic cylinders are located on the two sides of the center line of the two thread-shaped angles respectively. Meanwhile, an approximate circular hole is defined by the inner side of the boss, and an annular boss is defined by the arc protruding edges.

Description

Technical Field

[0001] This utility model belongs to the field of electrified railway catenary technology, and in particular relates to a boltless integrally formed positioning clamp. Background Technology

[0002] Positioning clamps are one of the key components in the flexible contact network system of electrified railways. They are widely used in cantilever positioning devices and installed on the positioner to connect and fix the contact wire, so that the pull-out value of the contact wire relative to the center of the track is limited within the design range.

[0003] The closest prior art to this utility model is the boltless positioning clamp (ZL 202222895882.5), which consists of two identical positioning clamps riveted together by a pin. Due to the limitation of the structural size of the positioning clamp, it is impossible to increase the load-bearing capacity of the positioning clamp by increasing the diameter of the pin, and the pin mounting hole requires high precision. Summary of the Invention

[0004] This utility model provides a boltless, integrally formed positioning clamp to overcome the shortcomings of the prior art.

[0005] The technical solution adopted by this utility model is: a boltless integrally formed positioning clamp, which is composed of two identical main clamping plates and a secondary clamping plate; both the main clamping plate and the secondary clamping plate include a body, and a boss extends upward from the middle of the upper end of the body, and the inner side of the boss is arc-shaped; the upper middle of the inner side of the body has an arc-shaped protrusion, and the arc-shaped protrusion is located below the boss; the middle of the body has two lugs, one lug has an elliptical hole horizontally on it, and the other lug has an elliptical cylinder protruding horizontally from its outer end, and the two lugs are distributed on both sides of the arc-shaped protrusion.

[0006] The center lines of the elliptical hole and the elliptical cylinder are offset inward relative to the center line of the clamp; and the offset of the center line of the elliptical cylinder is greater than the offset of the elliptical hole. One end of the body is provided with a horizontal clearance groove, and the clearance groove is directly opposite the elliptical cylinder. The upper parts of the front and rear ends of the body are respectively provided with inclined surfaces that are inclined in the direction of the line and have the same angle. The inner side of the lower part of the body is provided with a tooth-shaped angle for clamping the contact line.

[0007] The main clamping plate and the auxiliary clamping plate are arranged opposite each other, and are inserted into the elliptical holes on the opposite side by an elliptical cylinder. The main clamping plate and the auxiliary clamping plate are pushed to make the front and rear end faces of their bodies flush, so that the inclined surfaces are completely fitted. The center line of the elliptical cylinder is located on both sides of the center line of the two tooth angles. At the same time, the inner side of the boss forms an approximately circular hole, and the arc convex edge forms an annular boss.

[0008] The inclined surface is vertically provided with anti-slip teeth, and when the inclined surface is fully fitted, the anti-slip teeth are engaged together.

[0009] The inner ends of the boss have a first plane and a second plane respectively. The first plane has a recessed groove along the line direction below it, and the second plane has a protruding platform along the line direction below it, and the platform is engaged in the groove on the opposite side.

[0010] The top wall of the card slot slopes downward, and the upper surface of the card platform slopes upward, with both slopes at the same angle.

[0011] Both the main clamping plate and the auxiliary clamping plate are integrally forged or cast.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model consists of only two identical main clamping plates and auxiliary clamping plates, and the elliptical cylinder integrally formed with the lug in the middle of the body is inserted into the elliptical hole, which increases the load-bearing capacity in a limited space, while reducing parts and processes, reducing costs, requiring no maintenance after installation, and is suitable for various environments.

[0014] 2. This utility model has a buckle anti-loosening structure on the upper end of the main and auxiliary clamps, which effectively prevents the positioning wire clamp from deforming in the vertical line direction when the positioning pin applies vertical line tension, causing the vertical anti-slip teeth to disengage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the main body structure of this utility model;

[0018] Figure 4 This is a partial structural cross-sectional view of the present invention. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-4 The specific embodiments of this utility model will be described in detail below.

[0020] A boltless, integrally molded positioning clamp, comprising two identical main clamping plates 1 and a secondary clamping plate 2; both the main clamping plate 1 and the secondary clamping plate 2 include a body 3, wherein a boss 3-1 extends upward from the middle of the upper end of the body 3, and the inner side of the boss 3-1 is arc-shaped; the upper middle of the inner side of the body 3 has an arc-shaped protrusion 3-2, and the arc-shaped protrusion 3-2 is located below the boss 3-1; the middle of the body 3 has two lugs 3-3, one lug 3-3 having a horizontally elliptical hole 3-4, and the other lug 3-3 having a horizontally protruding elliptical cylinder 3-5 at its outer end, and the two lugs 3-3 are distributed on both sides of the arc-shaped protrusion 3-2;

[0021] The center lines of the elliptical hole 3-4 and the elliptical cylinder 3-5 are offset inward relative to the center line of the clamp; and the offset of the center line of the elliptical cylinder 3-5 is greater than the offset of the elliptical hole 3-4. One end of the body 3 is provided with a horizontal relief groove 3-8, and the relief groove 3-8 is directly opposite the elliptical cylinder 3-5. The upper parts of the front and rear ends of the body 3 are respectively provided with inclined surfaces 3-6 that are inclined in the direction of the line and have the same angle. The lower inner side of the body 3 is provided with a tooth angle 3-7 for clamping the contact line 4.

[0022] The main clamping plate 1 and the auxiliary clamping plate 2 are arranged opposite each other, and are inserted into the elliptical holes 3-4 on the opposite side through the elliptical cylinder 3-5. The main clamping plate 1 and the auxiliary clamping plate 2 are pushed to make the front and rear end faces of their bodies 3 flush, so that the inclined surface 3-6 is completely fitted. The center line of the elliptical cylinder 3-5 is located on both sides of the center line of the two tooth angles 3-7. At the same time, the inner side of the boss 3-1 forms an approximately circular hole 5, and the arc-shaped convex edge 3-2 forms an annular boss 6.

[0023] Specific installation method: Place the tooth angle 3-7 of the main clamping plate 1 in conjunction with the contact line 4. Place the lower end of the locator pin 8 on the inner side of the boss 3-1 on the main clamping plate 1 and make the annular groove at the lower end of the locator pin 8 fit into the arc protrusion 3-2. Then place the tooth angle 3-7 of the auxiliary clamping plate 2 in conjunction with the contact line 4. Insert the elliptical cylinder 3-5 into the elliptical hole 3-4 on the other lug 3-3 on the opposite side. Push the main clamping plate 1 and the auxiliary clamping plate 2 so that the front and rear end faces of their bodies 3 are flush, thereby making the inclined surface 3-6 completely fit together. The center line of the elliptical cylinder 3-5 is located on both sides of the center line of the two tooth angles 3-7. At the same time, the inner side of the boss 3-1 forms an approximately circular hole 5 that surrounds the cylindrical rod at the upper end of the locator pin 8. The arc protrusion 3-2 forms an annular boss 6 that fits into the annular groove at the lower end of the locator pin 8. The upper inclined surfaces 3-6 of the main clamping plate 1 and the auxiliary clamping plate 2 at their front and rear ends are pressed against each other, causing the upper ends of the main clamping plate 1 and the auxiliary clamping plate 2 to rotate outward from the elliptical cylinders 3-5 respectively, thereby causing the tooth angles 3-7 of the lower inner side of the main clamping plate 1 and the auxiliary clamping plate 2 to clamp the contact line 4.

[0024] To prevent the main clamping plate 1 and the auxiliary clamping plate 2 from separating backward, anti-slip teeth 7 are vertically provided on the inclined surface 3-6. After the inclined surface 3-6 is fully fitted, the anti-slip teeth 7 are engaged together. The anti-slip teeth 7 are preferably of a ratchet structure.

[0025] When the locator pin 8 applies a tension perpendicular to the wire clamp, in order to prevent the wire clamp from deforming in the direction perpendicular to the wire clamp, and thus protect the anti-slip tooth 7 from disengaging, the inner ends of the boss 3-1 have a first plane 3-9 and a second plane 3-10, respectively. Below the first plane 3-9, there is a recessed groove 3-11 along the wire direction, and below the second plane 3-10, there is a protruding platform 3-12 along the wire direction. The platform 3-12 is engaged in the opposite groove 3-11, protecting the anti-slip tooth 7 from disengaging. Preferably, the top wall of the groove 3-11 slopes downwards, and the upper surface of the platform 3-12 slopes upwards, with both having the same angle of inclination.

[0026] Both the main clamping plate 1 and the auxiliary clamping plate 2 are integrally forged or cast. This facilitates mass production and reduces costs.

[0027] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Therefore, all equivalent variations made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A boltless, integrally formed positioning clamp, characterized in that: The positioning clamp is composed of two identical main clamping plates (1) and auxiliary clamping plates (2); both the main clamping plates (1) and auxiliary clamping plates (2) include a body (3), the upper middle part of the body (3) has a boss (3-1) extending upward, and the inner side of the boss (3-1) is arc-shaped; the upper middle part of the inner side of the body (3) has an arc-shaped convex ridge (3-2), and the arc-shaped convex ridge (3-2) is located below the boss (3-1); the middle part of the body (3) has two lugs (3-3), one lug (3-3) has an elliptical hole (3-4) horizontally on it, and the outer end of the other lug (3-3) has an elliptical cylinder (3-5) protruding horizontally, and the two lugs (3-3) are distributed on both sides of the arc-shaped convex ridge (3-2); The center lines of the elliptical hole (3-4) and the elliptical cylinder (3-5) are offset inward relative to the center line of the clamp; and the offset of the center line of the elliptical cylinder (3-5) is greater than the offset of the elliptical hole (3-4). One end of the body (3) is provided with a horizontal relief groove (3-8), and the relief groove (3-8) is directly opposite the elliptical cylinder (3-5). The upper parts of the front and rear ends of the body (3) are respectively provided with inclined surfaces (3-6) that are inclined in the direction of the line and have the same angle. The lower inner side of the body (3) is provided with a tooth angle (3-7) for clamping the contact line (4). The main clamping plate (1) and the auxiliary clamping plate (2) are arranged opposite to each other, and are inserted into the elliptical hole (3-4) on the opposite side by an elliptical cylinder (3-5). The main clamping plate (1) and the auxiliary clamping plate (2) are pushed to make the front and rear end faces of their bodies (3) flush, so that the inclined surface (3-6) fits completely. The center line of the elliptical cylinder (3-5) is located on both sides of the center line of the two tooth angles (3-7). At the same time, the inner side of the boss (3-1) forms an approximately circular hole (5), and the arc convex edge (3-2) forms an annular boss (6).

2. The boltless integral molding positioning clamp according to claim 1, characterized in that: The inclined surface (3-6) is provided with anti-slip teeth (7) vertically. After the inclined surface (3-6) is fully fitted, the anti-slip teeth (7) are engaged together.

3. A boltless integrally formed positioning clamp according to claim 1 or 2, characterized in that: The inner ends of the boss (3-1) have a first plane (3-9) and a second plane (3-10) respectively. The first plane (3-9) has a recessed groove (3-11) along the line direction below it, and the second plane (3-10) has a protruding platform (3-12) along the line direction below it. The platform (3-12) is fitted into the opposite groove (3-11).

4. The boltless integral molding positioning clamp according to claim 3, characterized in that: The top wall of the card slot (3-11) is inclined downwards, and the upper surface of the card platform (3-12) is inclined upwards, and the two are inclined at the same angle.

5. The boltless integral molding positioning clamp according to claim 4, characterized in that: Both the main clamping plate (1) and the auxiliary clamping plate (2) are integrally forged or cast.

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