Bolt-free positioning wire clamp

Abstract

The utility model relates to the technical field of railway contact networks, in particular to a bolt-free positioning wire clamp which comprises a left clamping plate and a right clamping plate, two ends of the upper portion of the left clamping plate protrude towards the direction of the right clamping plate to form hook-shaped columns, and two ends of the upper portion of the right clamping plate are provided with hook-shaped grooves for the hook-shaped columns to be clamped in. Arc-shaped grooves are formed in the middle parts of the upper parts of the left clamping plate and the right clamping plate, notches of the two arc-shaped grooves enclose to form a circular slot for inserting a rotating pin, clamping openings are formed in the lower parts of the left clamping plate and the right clamping plate, and the two clamping openings enclose to form a clamping ring for clamping a contact line; the hook-shaped columns located at the two ends of the left clamping plate are gradually clamped into the hook-shaped grooves located at the two ends of the right clamping plate, so that the left clamping plate and the right clamping plate are fixed to clamp the rotating pin located on the upper portions of the left clamping plate and the right clamping plate and the contact line located on the lower portions of the right clamping plate, and the outer side faces of the obliquely-arranged hook-shaped grooves and the inner side faces of the hook-shaped columns can play a guiding role in the inserting process. And the inner hook part and the outer hook part are matched with each other to clamp towards the center so as to lock the left clamping plate and the right clamping plate.

Description

Technical Field

[0001] The utility model relates to the technical field of railway contact network, in particular to a bolt-free positioning wire clamp. Background Art

[0002] As a key component in the railway contact network, the positioning wire clamp is generally used in conjunction with a positioner to clamp and position the contact wire.

[0003] The positioning wire clamp in the prior art generally includes two clamping blocks, and the two clamping blocks are fixed with bolts. However, the contact network will vibrate during operation. After long-term use, the bolts between the two clamping blocks will loosen, causing contact network failure. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in order to solve the problem that the two clamping blocks of the wire clamp in the prior art are fixed with bolts, but the contact network will vibrate during operation. After long-term use, the bolts between the two clamping blocks will loosen and cause contact network failure. A boltless positioning wire clamp is now provided.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a boltless positioning wire clamp, comprising a left clamping plate and a right clamping plate that are clamped together, the two ends of the upper part of the left clamping plate protrude toward the right clamping plate to form a hook-shaped column, and the two ends of the upper part of the right clamping plate are provided with a hook-shaped groove for the hook-shaped column to be clamped;

[0006] The middle parts of the upper parts of the left clamping plate and the right clamping plate are both provided with arc grooves, the notches of the two arc grooves are opposite to each other and enclose a circular slot for the rotating pin to be inserted, and the lower parts of the left clamping plate and the right clamping plate are both provided with clamping openings, and the two clamping openings enclose a clamping ring for clamping the contact line.

[0007] Furthermore, the right clamping plate is provided with at least one bolt hole for a bolt to be screwed into to push the left clamping plate open.

[0008] Furthermore, the inner side surface of the hook-shaped column gradually tilts outward from the left splint to the right splint, and the middle part of the inner side surface protrudes inward to form an inner hook portion, and the outer side surface of the hook-shaped groove gradually tilts inward from the right splint to the left splint, and the middle part of the outer side surface is recessed inward to form an outer hook portion that cooperates with the inner hook portion.

[0009] Furthermore, the outer peripheral wall of the rotating pin is contracted in the radial direction to form a contraction portion, and the groove wall of the arc-shaped groove is protruded to form a convex ring for clamping into the contraction portion.

[0010] Furthermore, the left clamping plate and the right clamping plate each include a plug-in portion where the arc groove is located and edge portions located on both sides of the plug-in portion, and the edge portions are provided with weight-reducing grooves.

[0011] Furthermore, there are two bolt holes on the right clamping plate, and the two bolt holes are respectively located on the two edge portions and are symmetrically arranged.

[0012] The beneficial effects of the utility model are as follows: the utility model utilizes the hook-shaped columns at both ends of the left clamping plate to gradually fit into the hook-shaped grooves at both ends of the right clamping plate, so that the left clamping plate and the right clamping plate are fixed to clamp the rotating pin at the upper part and the contact line at the lower part, and the inclined outer side surface of the hook-shaped groove and the inner side surface of the hook-shaped column can play a guiding role during the plug-in process, and the inner hook part and the outer hook part cooperate with each other to clamp downward toward the center to realize the locking of the left clamping plate and the right clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is an exploded view of the utility model;

[0015] Figure 2 It is a side view of the utility model after installation;

[0016] Figure 3 It is the front view of the utility model after installation;

[0017] Figure 4 It is a three-dimensional schematic diagram of the utility model after installation;

[0018] Figure 5 It is a top view of the utility model;

[0019] In the figure:

[0020] 1. left splint; 101. hook-shaped column; 1011. inner side; 1012. inner hook;

[0021] 2. right clamping plate; 201. hook-shaped groove; 2011. outer side surface; 2012. outer hook portion; 202. arc-shaped groove; 2021. convex ring; 203. clamping mouth; 204. bolt hole; 205. plug-in portion; 206. edge portion; 207. weight-reducing groove;

[0022] 3. Rotating pin; 301. Contraction part. DETAILED DESCRIPTION

[0023] The utility model is now described in further detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, so they only show the components related to the utility model, and the directions and references (for example, up, down, left, right, etc.) can only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the subject matter for which protection is sought is limited only by the attached claims and their equivalents.

[0024] Embodiment 1:

[0025] like Figure 1-Figure 5 As shown, a boltless positioning wire clamp comprises a left clamping plate 1 and a right clamping plate 2 which are snap-fitted together, the two ends of the upper part of the left clamping plate 1 protrude toward the direction of the right clamping plate 2 to form hook-shaped columns 101, and the two ends of the upper part of the right clamping plate 2 are provided with hook-shaped grooves 201 for the hook-shaped columns 101 to be snapped into, the two hook-shaped columns 101 correspond to the two hook-shaped grooves 201 one by one, and each hook-shaped column 101 is snapped into its corresponding hook-shaped groove 201 to achieve the fixation of the left clamping plate 1 and the right clamping plate 2;

[0026] The middle parts of the upper parts of the left clamping plate 1 and the right clamping plate 2 are both provided with arc grooves 202, and the notches of the two arc grooves 202 are opposite to each other and enclose a circular slot for the rotating pin 3 to be inserted, and the lower parts of the left clamping plate 1 and the right clamping plate 2 are both provided with clamping openings 203, and the two clamping openings 203 enclose a clamping ring for clamping the contact line.

[0027] During installation, as the left clamping plate 1 and the right clamping plate 2 approach each other, the hook-shaped columns 101 at both ends gradually fit into the hook-shaped grooves 201 at both ends, thereby fixing the left clamping plate 1 and the right clamping plate 2 to clamp the rotating pin 3 at the upper part and the contact line at the lower part.

[0028] In some examples, the right clamp 2 is provided with at least one bolt hole 204 for a bolt to be screwed into to push open the left clamp 1. The bolt hole 204 passes through the right clamp 2. During the process of screwing in the bolt, the bolt head passes through the right clamp 2 and gradually approaches the left clamp 1. Then, the bolt continues to be screwed so that the bolt head rests against the left clamp 1 and pushes it open, thereby realizing the removal of the wire clamp.

[0029] In some examples, the inner side surface 1011 of the hook-shaped column 101 gradually tilts outward from the left splint 1 to the right splint 2, and the middle part of the inner side surface 1011 protrudes inward to form an inner hook portion 1012, and the outer side surface 2011 of the hook-shaped groove 201 gradually tilts inward from the right splint 2 to the left splint 1, and the middle part of the outer side surface 2011 is recessed inward to form an outer hook portion 2012 that cooperates with the inner hook portion 1012. First, the left splint 1 and the right splint 2 move toward the center, and the inclined outer side surface 2011 and the inner side surface 1011 can play a guiding role during the movement. Then, the inner hook portion 1012 and the outer hook portion 2012 cooperate with each other to clamp toward the center to achieve the locking of the left splint 1 and the right splint 2.

[0030] In some examples, the outer peripheral wall of the rotating pin 3 is radially contracted to form a contraction portion 301, and the groove wall of the arc groove 202 protrudes to form a convex ring 2021 for clamping the contraction portion 301. The contraction portion 301 cooperates with the convex ring 2021 to axially limit the rotating pin 3.

[0031] In some examples, the left clamp 1 and the right clamp 2 both include a plug-in portion 205 where the arc groove 202 is located and edge portions 206 located on both sides of the plug-in portion 205, and weight-reducing grooves 207 are provided on the edge portions 206. Since the plug-in portion 205 has the arc groove 202, its own thickness is relatively small. In order to ensure the strength of the plug-in portion 205, it is not suitable to provide a weight-reducing groove thereon. Therefore, the weight-reducing grooves are provided in sections and are provided on both sides of the plug-in portion 205, respectively, so as to reduce the weight while ensuring the overall strength of the wire clamp.

[0032] In some examples, there are two bolt holes 204 on the right clamp plate 2, and the two bolt holes 204 are located on the two edge portions 206 and are symmetrically arranged. When removing the wire clamp, two bolts are respectively screwed into the two bolt holes 204 to push open the left clamp plate 1, so that the force applied to the left clamp plate 1 is more uniform, and the left clamp plate 1 can be quickly separated from the right clamp plate 2.

[0033] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A boltless positioning clamp, characterized in that: It comprises a left clamping plate (1) and a right clamping plate (2) that are engaged with each other, wherein the upper ends of the left clamping plate (1) protrude toward the right clamping plate (2) to form hook-shaped columns (101), and the upper ends of the right clamping plate (2) are provided with hook-shaped grooves (201) for the hook-shaped columns (101) to be engaged with; The middle parts of the upper parts of the left clamping plate (1) and the right clamping plate (2) are both provided with arc grooves (202), the notches of the two arc grooves (202) are opposite to each other and enclose to form a circular slot for the rotation pin (3) to be inserted, and the lower parts of the left clamping plate (1) and the right clamping plate (2) are both provided with clamping openings (203), and the two clamping openings (203) enclose to form a clamping ring for clamping the contact line.

2. The boltless positioning clamp according to claim 1, characterized in that: The right clamping plate (2) is provided with at least one bolt hole (204) for a bolt to be screwed into to push open the left clamping plate (1).

3. The boltless positioning clamp according to claim 1, characterized in that: The inner side surface (1011) of the hook-shaped column (101) gradually tilts outward from the left splint (1) to the right splint (2), and the middle portion of the inner side surface (1011) protrudes inward to form an inner hook portion (1012); the outer side surface (2011) of the hook-shaped groove (201) gradually tilts inward from the right splint (2) to the left splint (1), and the middle portion of the outer side surface (2011) is recessed inward to form an outer hook portion (2012) that cooperates with the inner hook portion (1012).

4. The boltless positioning clamp according to claim 1, characterized in that: The outer peripheral wall of the rotating pin (3) is contracted in the radial direction to form a contraction portion (301), and the groove wall of the arc-shaped groove (202) is protruding to form a convex ring (2021) for clamping the contraction portion (301).

5. The boltless positioning wire clamp according to claim 2, characterized in that: The left clamping plate (1) and the right clamping plate (2) both comprise a plug-in portion (205) where the arc-shaped groove (202) is located and edge portions (206) located on both sides of the plug-in portion (205), and the edge portions (206) are provided with weight-reducing grooves (207).

6. The boltless positioning wire clamp according to claim 5, characterized in that: There are two bolt holes (204) on the right clamping plate (2), and the two bolt holes (204) are respectively located on two edge portions (206) and are symmetrically arranged.

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