Bolt-free integral dropper

Abstract

The utility model belongs to the technical field of railway contact networks, and particularly relates to a bolt-free integral dropper which comprises two clamping plates matched in an inserting mode, each clamping plate comprises an inserting portion, an arc-shaped clamping opening located at the top of the inserting portion and an arc-shaped lifting lug located at the bottom of the inserting portion, and each inserting portion comprises a positioning pin and a positioning groove which are arranged at intervals. The positioning pins on the two clamping plates correspond to the positioning grooves in a one-to-one mode, the positioning pins are inserted into the corresponding positioning grooves, the inner side faces of the positioning pins gradually incline outwards in the direction from the clamping plate where the positioning pins are located to the other clamping plate, and the groove bottoms of the positioning grooves gradually incline inwards in the direction from the clamping plate where the positioning pins are located to the other clamping plate; according to the utility model, the two clamping plates are positioned and clamped in the front-back direction by using the obliquely arranged positioning groove and positioning pin, and the two clamping plates are positioned and clamped in the left-right direction by using the two clamping lugs, so that the traditional bolt structure is replaced, and the reliability of the whole structure is improved.

Description

Technical Field

[0001] This utility model belongs to the field of railway catenary technology, specifically relating to a boltless integral dropper. Background Technology

[0002] In railway overhead contact systems, electrical energy is transferred from the contact wire to the electric locomotive through contact with the pantograph of the locomotive. The contact wire is connected to the catenary wire via droppers.

[0003] In existing technologies, droppers are typically connected to the contact wire using dropper clamps, and to the catenary wire using dropper clamps. Both dropper clamps are secured with bolts. However, the contact network vibrates, and bolted clamps are prone to loosening, leading to contact network failures. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to solve the problem that in the prior art, both the contact wire dropper clamp and the catenary dropper clamp are clamped by bolts, but the contact network will vibrate, and the bolted clamps are prone to loosening, leading to contact network failure. Now, a boltless integral dropper is provided.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a boltless integral dropper, including a contact wire dropper clamp, a catenary dropper clamp, and a dropper located between the two. Both the contact wire dropper clamp and the catenary dropper clamp include two clamping plates that are plugged into each other, and a pressure tube is connected to one of the clamping plates.

[0006] Each clamp includes a plug-in portion, an arc-shaped clamp at the top of the plug-in portion, and an arc-shaped lifting lug at the bottom of the plug-in portion;

[0007] Each connector includes a locating pin and a locating groove spaced apart. The locating pins and locating grooves on the two clamping plates correspond one-to-one, and the locating pins are inserted into their corresponding locating grooves. The inner side of the locating pin gradually slopes outward along the clamping plate to the other clamping plate, and the bottom of the locating groove gradually slopes inward along the clamping plate to the other clamping plate.

[0008] The clamping openings of the two clamping plates form a clamping ring for holding the contact wire or the catenary wire;

[0009] The lugs of the two clamps engage to form a hanging ring for suspending the suspension cable.

[0010] During installation, the catenary cable is initially placed in the clamping slots of the two clamping plates. The two clamping plates move towards the center simultaneously, allowing the positioning pin to be inserted into the positioning groove. Since both the positioning pin and the positioning groove have beveled surfaces, during the insertion process, the left clamping plate on the left moves to the right and forward at the same time, while the right clamping plate on the right moves to the left and backward at the same time, so that the two gradually clamp together in the front-back direction. The two lifting rings then engage to complete the clamping in the left-right direction.

[0011] The above technical solution utilizes inclined positioning grooves and positioning pins to achieve positioning and clamping of the two clamping plates in the front-to-back direction, and utilizes two snap-fit ​​lifting rings to achieve positioning and clamping of the two clamping plates in the left-to-right direction, thereby replacing the traditional bolt structure and improving the overall structural reliability.

[0012] Furthermore, the lifting lug includes a lifting lug body and a protruding part located at the head of the lifting lug body. A stepped surface is formed between the protruding part and the lifting lug body. The stepped surfaces of the two lifting lugs are engaged. As the two lifting lugs approach each other, the two protruding parts gradually fit together until the two stepped surfaces contact each other to achieve engagement, thereby achieving positioning and clamping of the two clamping plates in the left and right directions.

[0013] Furthermore, the protrusion height of the protrusion gradually decreases along the direction from the clamping plate to the other clamping plate to form an inclined surface, that is, the thickness of the protrusion gradually decreases. When the two lifting lugs approach each other, the protrusion with the smaller thickness contacts first, which can provide guidance for subsequent movement, and the step surface is also inclined.

[0014] Furthermore, the upper and lower sides of the positioning pin are both horizontal planes, and the upper and lower walls of the positioning groove are also horizontal planes. When the positioning pin and the positioning groove are inserted and engaged, the upper side fits against the upper groove wall, and the lower side fits against the lower groove wall, which can achieve the function of vertical positioning, so that the two clamps are fixed in the vertical direction.

[0015] Furthermore, the inclination angles of the inner side surface and the inner groove wall are both 5°±1°, and the inclination angle of the protrusion is also 5°±1°.

[0016] Furthermore, both the inner surface of the positioning pin and the bottom of the positioning groove are curved surfaces.

[0017] Furthermore, the insertion part includes a first base plate for mounting a positioning pin and a second base plate with a positioning groove, and the extension lengths of the first base plate, the second base plate and the clamp gradually increase.

[0018] Furthermore, the clamping plate is forged from a copper alloy.

[0019] The beneficial effects of this utility model are as follows: Firstly, this utility model utilizes the inclined positioning groove and positioning pin to achieve the positioning and clamping of the two clamping plates in the front-to-back direction, and utilizes the two snap-fit ​​lifting lugs to achieve the positioning and clamping of the two clamping plates in the left-to-right direction, thereby replacing the traditional bolt structure and improving the reliability of the overall structure. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model in conjunction with the catenary cable;

[0022] Figure 2 This is an exploded view of this utility model;

[0023] Figure 3 This is a 3D schematic diagram of the splint;

[0024] Figure 4 This is a side view of the plywood.

[0025] In the picture:

[0026] 1. Clamping plate; 101. Insertion part; 1011. Positioning pin; 1011a. Inner side; 1011b. Upper side; 1011c. Lower side; 1012. Positioning groove; 1012a. Groove bottom; 1012b. Upper groove wall; 1012c. Lower groove wall; 1013. First substrate; 1014. Second substrate; 102. Clamping opening; 103. Lifting lug; 1031. Lifting lug body; 1032. Protrusion; 1033. Stepped surface;

[0027] 2. Press the pipe;

[0028] 3. Support cable. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0030] Example 1:

[0031] like Figures 1-4 As shown, this utility model is a boltless integral dropper, including a contact wire dropper clamp, a catenary dropper clamp, and a dropper located between the two. Both the contact wire dropper clamp and the catenary dropper clamp include two clamping plates 1 that are plugged into each other. The clamping plates 1 are forged from copper alloy, and a pressure tube 2 is connected to one of the clamping plates 1.

[0032] Each clamp 1 includes a plug-in portion 101, an arc-shaped clamp 102 located at the top of the plug-in portion 101, and an arc-shaped lug 103 located at the bottom of the plug-in portion 101;

[0033] Each insertion part 101 includes a positioning pin 1011, a positioning groove 1012, a first substrate 1013 for mounting the positioning pin 1011, and a second substrate 1014 with the positioning groove 1012. The clamp 102 is located at the top of the second substrate 1014. The first substrate 1013 extends to form an extension. The lug 103 is located at the bottom of the extension. The extension lengths of the first substrate 1013, the second substrate 1014, and the clamp 102 gradually increase. The positioning pin 1011 and the positioning groove 1012 on the same clamp 1 are staggered, that is, they are not arranged side by side.

[0034] The positioning pins 1011 on the two clamping plates 1 correspond one-to-one with the positioning grooves 1012, and the positioning pins 1011 are inserted into their corresponding positioning grooves 1012. The inner surface 1011a of the positioning pin 1011 gradually slopes outward along the direction from the clamping plate 1 to the other clamping plate 1, and the bottom 1012a of the positioning groove 1012 gradually slopes inward along the direction from the clamping plate 1 to the other clamping plate 1. The inclination angles of the inner surface 1011a and the bottom 1012a are both 5°±1°, and both the inner surface 1011a and the bottom 1012a are curved surfaces. The upper side 1011b and lower side 1011c of the positioning pin 1011 are both horizontal planes, and the upper groove wall 1012b and lower groove wall 1012c of the positioning groove 1012 are also both horizontal planes. When the positioning pin 1011 and the positioning groove 1012 are inserted and engaged, the inclined inner side 1011a fits against the groove bottom 1012a to achieve clamping in the front-back direction. The upper side 1011b fits against the upper groove wall 1012b, and the lower side 1011c fits against the lower groove wall 1012c, which can achieve the function of vertical positioning, so that the two clamping plates 1 are fixed in the vertical direction.

[0035] The clamping openings 102 of the two clamping plates 1 are closed to form a clamping ring for holding the contact wire or the load-bearing cable 3;

[0036] The lugs 103 of the two clamping plates 1 are engaged to form a hanging ring for hanging the suspension wire. The lug 103 includes a lug body 1031 and a protruding part 1032 located at the head of the lug body 1031. A stepped surface 1033 is formed between the protruding part 1032 and the lug body 1031. The stepped surfaces 1033 of the two lugs 103 are engaged with each other. As the two lugs 103 approach each other, the two protruding parts 1032 gradually come into contact with the two stepped surfaces 1033 to achieve engagement, thereby achieving positioning and clamping of the two clamping plates 1 in the left and right directions.

[0037] The protrusion height of the protrusion 1032 gradually decreases along the direction from the clamping plate 1 to the other clamping plate 1 to form an inclined surface. The inclination angle of the protrusion 1032 is also 5°±1°, that is, the thickness of the protrusion 1032 gradually decreases. When the two lifting lugs 103 approach each other, the protrusion 1032 with the smaller thickness contacts first, which can provide guidance for subsequent movement. The step surface 1033 is also inclined.

[0038] Working principle:

[0039] During installation, the load-bearing cable 3 is initially fitted into the clamping openings 102 of the two clamping plates 1. The two clamping plates 1 move towards the center simultaneously, so that the positioning pin 1011 is inserted into the positioning groove 1012. Both the positioning pin 1011 and the positioning groove 1012 are provided with inclined surfaces. Therefore, during the insertion process, the left clamping plate on the left moves to the right and forward at the same time, while the right clamping plate on the right moves to the left and backward at the same time, so that the two gradually clamp together in the front-back direction. The upper side 1011b fits against the upper groove wall 1012b, and the lower side 1011c fits against the lower groove wall 1012c, which can achieve positioning in the up-down direction. The two lifting lugs 103 are engaged to complete the clamping in the left-right direction.

[0040] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A boltless integral suspension string, characterized in that: It comprises a contact line suspension string clamp, a load-bearing cable suspension string clamp and a suspension string located therebetween, wherein the contact line suspension string clamp and the load-bearing cable suspension string clamp both comprise two plug-in mating clamps (1), and a crimping tube (2) is connected to one of the clamps (1); Each clamping plate (1) comprises an inserting portion (101), an arc-shaped clamping opening (102) located at the top of the inserting portion (101), and an arc-shaped lifting ear (103) located at the bottom of the inserting portion (101); Each plug-in portion (101) comprises a positioning pin (1011) and a positioning groove (1012) arranged at intervals, the positioning pins (1011) on the two clamping plates (1) correspond to the positioning grooves (1012) one by one and the positioning pins (1011) are inserted into the corresponding positioning grooves (1012), the inner side surface (1011a) of the positioning pin (1011) is gradually inclined outwards along the direction of the clamping plate (1) where the positioning pin is located toward the other clamping plate (1), and the groove bottom (1012a) of the positioning groove (1012) is gradually inclined inwards along the direction of the clamping plate (1) where the positioning pin is located toward the other clamping plate (1); The clamping openings (102) of the two clamping plates (1) are opposite to each other and the two clamping plates are combined to form a clamping ring for clamping the contact wire or the load-bearing cable (3); The hanging ears (103) of the two clamping plates (1) are opposite to each other and are snap-fitted to form a hanging ring for hanging hanging strings.

2. The boltless integral suspension string according to claim 1, characterized in that: The lifting ear (103) comprises a lifting ear body (1031) and a protruding portion (1032) located at the head of the lifting ear body (1031) and protrudingly arranged, a step surface (1033) is formed between the protruding portion (1032) and the lifting ear body (1031), and the step surfaces (1033) of the two lifting ears (103) are mutually engaged.

3. The boltless integral suspension string according to claim 2, characterized in that: The protruding height of the protruding portion (1032) gradually decreases along the direction from the clamping plate (1) where the protruding portion (1032) is located toward the other clamping plate (1) to form an inclined surface.

4. The boltless integral suspension string according to claim 1, characterized in that: The upper side surface (1011b) and the lower side surface (1011c) of the positioning pin (1011) are both horizontal planes, and the upper groove wall (1012b) and the lower groove wall (1012c) of the positioning groove (1012) are also both horizontal planes.

5. The boltless integral suspension string according to claim 3, characterized in that: The inclination angles of the inner side surface (1011a) and the groove bottom (1012a) are both 5°±1°, and the inclination angle of the protrusion (1032) is also 5°±1°.

6. The boltless integral suspension string according to claim 1, characterized in that: The inner side surface (1011a) of the positioning pin (1011) and the groove bottom (1012a) of the positioning groove (1012) are both arc surfaces.

7. The boltless integral suspension string according to claim 1, characterized in that: The plug-in portion (101) comprises a first substrate (1013) for installing a positioning pin (1011) and a second substrate (1014) provided with a positioning groove (1012), and the extension lengths of the first substrate (1013), the second substrate (1014) and the clamping opening (102) gradually increase.

8. The boltless integral suspension string according to claim 1, characterized in that: The clamping plate (1) is forged from a copper alloy.

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