Anti-sliding bolt-free integral dropper

Abstract

The utility model belongs to the technical field of railway contact networks, and particularly relates to an anti-sliding bolt-free integral dropper which comprises two clamping blocks matched in a clamping mode, each clamping block comprises an inserting mechanism, a clamping opening located on one side of the inserting mechanism and a lifting lug located on the other side of the inserting mechanism, the inserting mechanism comprises a base body and a plurality of wedge-shaped inserting pins which are arranged at intervals and protrude out of the base body, wedge-shaped inserting grooves are formed between the inserting pins and the base body, the inserting pins on the two clamping blocks correspond to the inserting grooves in a one-to-one mode, and each inserting pin is inserted into the corresponding inserting groove; according to the utility model, the two clamping blocks are clamped in the front-back direction by utilizing the plurality of bolts and the slots which are of wedge-shaped structures, and the two lifting lugs are clamped in the left-right direction by utilizing the clamping parts, so that the two clamping blocks are fixed, the instability caused by a traditional bolt structure is overcome, and the reliability of a contact network system is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway catenary, and particularly relates to an anti-slip type boltless integral suspension string. Background Art

[0002] The railway catenary includes an upper messenger wire, a lower contact wire and an integral suspension string located therebetween. The upper end of the integral suspension string is connected to the messenger wire through a messenger wire suspension clamp, and the lower end is connected to the contact wire through a contact wire suspension clamp.

[0003] In the prior art, both the messenger wire suspension clamp and the contact wire suspension clamp include two clamping blocks, and the two clamping blocks are locked by fastening bolts. However, when the catenary is excited by a pantograph, vibration will occur, which will cause the fastening bolts to loosen or even fall off, and contact network faults will be triggered when the pantograph passes through. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: to solve the problem that both the messenger wire suspension clamp and the contact wire suspension clamp in the prior art include two clamping blocks, and the two clamping blocks are locked by fastening bolts. However, when the catenary is excited by a pantograph, vibration will occur, which will cause the fastening bolts to loosen or even fall off, and contact network faults will be triggered when the pantograph passes through. Now, an anti-slip type boltless integral suspension string is provided.

[0005] To solve the above technical problem, the utility model adopts the following technical scheme: an anti-slip type boltless integral suspension string, including a messenger wire suspension clamp connection, a contact wire suspension clamp and a suspension string located therebetween. Both the messenger wire suspension clamp connection and the contact wire suspension clamp include two clamping blocks that are snap-fitted. Each clamping block includes a plugging mechanism, a clamping opening located on one side of the plugging mechanism, and a suspension ear located on the other side of the plugging mechanism;

[0006] The plugging mechanism includes a base body and a plurality of wedge-shaped pins protruding from the base body and arranged at intervals. That is, the pins are provided with inclined surfaces, so that the cross-sectional area of the pins gradually decreases from the clamping block where the pins are located to the direction of the other clamping block. A wedge-shaped slot is formed between the pins and the base body. That is, the slot also has an inclined surface, so that the cross-sectional area of the slot gradually increases from the clamping block where the slot is located to the direction of the other clamping block. The pins and slots on the two clamping blocks correspond to each other one by one, and each pin is inserted into its corresponding slot;

[0007] The suspension ear includes a suspension ear body and a clamping portion protruding from the head of the suspension ear body. A clamping surface is formed between the suspension ear body and the clamping portion. The clamping surfaces of the two clamping blocks are snap-fitted to form a suspension loop;

[0008] The clamping openings of the two clamping blocks face each other and enclose to form a clamping loop.

[0009] During installation, bring the two clamping blocks closer to each other so that the pin is inserted into its corresponding slot. Since both the pin and the slot are wedge-shaped, that is, both are provided with inclined surfaces, during the insertion process, when the left clamping block on the left moves to the right, it also moves forward at the same time, and when the right clamping block on the right moves to the left, it also moves backward at the same time, causing the two to gradually clamp in the front-rear direction. At the same time, during the process of the two lugs approaching each other, the two engaging portions gradually come into contact until the two engaging surfaces are engaged with each other, thereby realizing the clamping of the two lugs in the left-right direction.

[0010] The above technical solution utilizes a number of pins and slots with a wedge-shaped structure to achieve the clamping of the two clamping blocks in the front-rear direction, and uses the engaging portion to achieve the engagement of the two lugs in the left-right direction, thereby realizing the fixation of the two clamping blocks, overcoming the instability brought by the traditional bolt structure, and improving the reliability of the catenary system.

[0011] Furthermore, the base body further includes a first mounting block for mounting the clamping opening and a second mounting block for mounting the lug. The first mounting block and the second mounting block are respectively located on both sides of the slot and cover part of the slot to form the upper slot wall and / or the lower slot wall of the slot. When the slot with the upper slot wall and / or the lower slot wall is inserted and matched with the pin, the stability of the overall structure can be improved.

[0012] Furthermore, the thickness of each engaging portion gradually decreases from the clamping block where it is located towards the direction of the other clamping block. During the process of the two lugs approaching each other, the engaging portion with a small thickness contacts first to guide the movement of the two lugs.

[0013] Furthermore, there are two pins and slots on each clamping block. Each pin has a straight surface and an inclined surface arranged oppositely to form a wedge-shaped structure. One of the pins is located in the middle of the base body as the middle pin, and the straight surface of the middle pin is coplanar with the side wall of the first mounting block. The other pin is located at the end of the base body as the end pin, and the straight surface of the end pin is coplanar with the side wall of the second mounting block.

[0014] Furthermore, a crimping seat is provided on the second mounting block of one of the two clamping blocks, and the crimping seat is provided with a crimping hole for crimping the current-carrying wire.

[0015] Furthermore, a chamfer is provided at the head of the pin to guide the insertion of the pin and the slot.

[0016] Furthermore, the clamping opening of the contact wire suspension clamp is arc-shaped, and a number of anti-slip grooves are arranged at intervals on the inner wall of the clamping opening to increase the friction between the contact wire suspension clamp and the contact wire.

[0017] Furthermore, an arc-shaped convex platform protrudes from the inner side of the lug. The two arc-shaped convex platforms on the two clamping blocks are combined to form an arc surface, which is more fitting with the contact surface of the heart-shaped ring, can make the friction more uniform, and reduce wear.

[0018] Furthermore, a weight-reducing groove is provided on the side surface of each clamping block.

[0019] The beneficial effects of the present utility model are as follows: by using a number of pins and slots with a wedge-shaped structure, the present utility model realizes the clamping of two clamping blocks in the front-rear direction, and uses the clamping part to realize the clamping of two lifting lugs in the left-right direction, thereby realizing the fixation of the two clamping blocks, overcoming the instability brought by the traditional bolt structure, and improving the reliability of the catenary system. Description of the Drawings

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0021] Figure 1 is a three-dimensional schematic diagram of the catenary suspension clamp;

[0022] Figure 2 is the front view of the catenary suspension clamp;

[0023] Figure 3 is Figure 2 the sectional view taken along the A-A direction in

[0024] Figure 4 is Figure 2 the sectional view taken along the B-B direction in

[0025] Figure 5 is the exploded view of the catenary suspension clamp;

[0026] Figure 6 is the structural schematic diagram of one of the clamping blocks in the catenary suspension clamp;

[0027] Figure 7 is the structural schematic diagram of the other clamping block in the catenary suspension clamp;

[0028] Figure 8 is the three-dimensional schematic diagram of the contact wire suspension clamp;

[0029] Figure 9 is the exploded view of the contact wire suspension clamp;

[0030] In the figure:

[0031] 100, catenary suspension clamp;

[0032] 200, contact wire suspension clamp;

[0033] 1. Clamping block; 101. Substrate; 102. Plug pin; 102a. Middle plug pin; 102b. End plug pin; 103. Straight face; 104. Inclined face; 105. Slot; 106. First mounting block; 107. Second mounting block; 108. Clamping opening; 109. Lifting lug; 1091. Lifting lug body; 1092. Clamping portion; 1093. Clamping face; 110. Crimping seat; 1101. Crimping hole; 111. Weight reduction groove; Detailed implementation mode

[0034] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0035] Embodiment 1:

[0036] As Figures 1-9 shown, the present utility model is an anti-slip type boltless integral suspension string, including a catenary suspension clamp 100, a contact wire suspension clamp 200, a suspension string located between the two, a heart-shaped ring and a current-carrying wire. And both the catenary suspension clamp 100 and the contact wire suspension clamp 200 include two clamping blocks 1 that are clamped and matched with each other. Each clamping block 1 includes a plugging mechanism, a clamping opening 108 located on one side of the plugging mechanism, and a lifting lug 109 located on the other side of the plugging mechanism. The clamping block 1 is integrally formed;

[0037] The plugging mechanism includes a substrate 101 and a plurality of wedge-shaped plug pins 102 protruding from the substrate 101 and arranged at intervals. In this embodiment, the number of plug pins 102 is two. Each plug pin 102 has a straight face 103 and an inclined face 104 arranged oppositely to form a wedge-shaped structure, so that the cross-sectional area of the plug pin 102 gradually decreases from the clamping block 1 where it is located to the direction of the other clamping block 1. A wedge-shaped slot 105 is formed between the plug pin 102 and the substrate 101. The number of slots 105 is also two. The cross-sectional area of the slot 105 gradually increases from the clamping block 1 where it is located to the direction of the other clamping block 1. The plug pins 102 and the slots 105 on the two clamping blocks 1 correspond to each other one by one, and each plug pin 102 is inserted into the slot 105 corresponding to it. And a chamfer is provided at the head of the plug pin 102 to guide the plugging of the plug pin 102 and the slot 105;

[0038] The base body 101 further includes a first mounting block 106 for mounting the clamping opening 108 and a second mounting block 107 for mounting the lifting lug 109. The first mounting block 106 and the second mounting block 107 are respectively located on both sides of the slot 105 and cover part of the slot 105 to form the upper slot wall and / or the lower slot wall of the slot 105. When the slot 105 with the upper slot wall and / or the lower slot wall is inserted and matched with the plug pin 102, the stability of the overall structure can be improved. A crimping seat 110 is provided on the second mounting block 107 of one of the two clamping blocks 1. The crimping seat 110 is provided with a crimping hole 1101 for crimping the current-carrying wire. A weight-reducing groove 111 is provided on the side of the first mounting block 106 opposite to the clamping opening 108.

[0039] One of the two plug pins 102 is a middle plug pin 102a located in the middle of the base body 101. The straight surface 103 of the middle plug pin 102a is coplanar with the side wall of the first mounting block 106. The other plug pin 102 is an end plug pin 102b located at the end of the base body 101. The straight surface 103 of the end plug pin 102b is coplanar with the side wall of the second mounting block 107.

[0040] The lifting lug 109 includes a lifting lug body 1091 and a clamping portion 1092 protruding from the head of the lifting lug body 1091. A clamping surface 1093 is formed between the lifting lug body 1091 and the clamping portion 1092. The clamping surfaces 1093 of the two clamping blocks 1 are clamped and matched to form a lifting ring for connecting with the suspension string. The thickness of each clamping portion 1092 gradually decreases from the clamping block 1 where it is located to the direction of the other clamping block 1. During the process of the two lifting lugs 109 approaching each other, the clamping portion 1092 with a small thickness contacts first to guide the movement of the two lifting lugs 109. An arc-shaped convex platform 1094 protrudes from the inner side of the lifting lug 109. The two arc-shaped convex platforms 1094 on the two clamping blocks 1 are combined to form an arc surface, which is more fitting with the contact surface of the heart-shaped ring, can make the friction more uniform and reduce wear.

[0041] The clamping openings 108 of the two clamping blocks 1 face each other and enclose a clamping ring for clamping the contact wire or the messenger wire. The clamping opening 108 of the messenger wire suspension clamp 100 is arc-shaped, and a plurality of anti-slip grooves are arranged at intervals on the inner wall of the clamping opening 108 to increase the friction force between the messenger wire suspension clamp 100 and the messenger wire and improve its sliding load performance.

[0042] Working principle:

[0043] During installation, bring the two clamping blocks 1 closer to each other so that the bolt 102 is inserted into its corresponding slot 105. Since both the bolt 102 and the slot 105 are wedge-shaped, that is, both are provided with inclined surfaces 104, during the insertion process, when the left clamping block on the left moves to the right, it also moves forward at the same time, and when the right clamping block on the right moves to the left, it also moves backward at the same time, causing the two to gradually clamp in the front-rear direction. At the same time, during the process of the two lifting lugs 109 approaching each other, the two clamping portions 1092 gradually come into contact until the two clamping surfaces 1093 are clamped with each other, thereby realizing the clamping of the two lifting lugs 109 in the left-right direction, overcoming the instability brought by the traditional bolt structure and improving the reliability of the catenary system.

[0044] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An anti-slip boltless integral suspension string, characterized in that: It comprises a load-bearing cable string clamp (100), a contact line string clamp (200) and a string located therebetween, wherein the load-bearing cable string clamp (100) and the contact line string clamp (200) each comprise two clamping blocks (1) that are engaged with each other, each clamping block (1) comprising a plug-in mechanism, a clamping opening (108) located on one side of the plug-in mechanism and a lifting ear (109) located on the other side of the plug-in mechanism; The plug-in mechanism comprises a base (101) and a plurality of wedge-shaped plug pins (102) protruding from the base (101) and arranged at intervals, a wedge-shaped slot (105) is formed between the plug pins (102) and the base (101), the plug pins (102) on the two clamping blocks (1) correspond to the slots (105) one by one, and each plug pin (102) is inserted into the corresponding slot (105); The lifting ear (109) comprises a lifting ear body (1091) and a clamping portion (1092) protruding from the head of the lifting ear body (1091), and a clamping surface (1093) is formed between the lifting ear body (1091) and the clamping portion (1092), and the clamping surfaces (1093) of the two clamping blocks (1) are clamped together to form a lifting ring; The clamping openings (108) of the two clamping blocks (1) are opposite to each other and are surrounded by each other to form a clamping ring.

2. The anti-slip boltless integral suspension string according to claim 1, characterized in that: The base (101) further comprises a first mounting block (106) for mounting the clamp (108) and a second mounting block (107) for mounting the lifting ear (109), wherein the first mounting block (106) and the second mounting block (107) are respectively located on both sides of the slot (105) and cover a portion of the slot (105) to form an upper slot wall and / or a lower slot wall of the slot (105).

3. The anti-slip boltless integral suspension string according to claim 1, characterized in that: The thickness of each clamping portion (1092) gradually decreases from the clamping block (1) where it is located towards the other clamping block (1).

4. The anti-slip boltless integral suspension string according to claim 2, characterized in that: Each clamping block (1) has two latches (102) and two slots (105), each latch (102) having a straight surface (103) and an inclined surface (104) arranged opposite to each other to form a wedge-shaped structure, and one of the latches (102) is located in the middle of the base (101) and is a middle latch (102a), and the straight surface (103) of the middle latch (102a) is coplanar with the side wall of the first mounting block (106), and the other latch (102) is located at the end of the base (101) and is an end latch (102b), and the straight surface (103) of the end latch (102b) is coplanar with the side wall of the second mounting block (107).

5. The anti-slip boltless integral suspension string according to claim 2, characterized in that: A crimping seat (110) is provided on the second mounting block (107) on one of the two clamping blocks (1), and the crimping seat (110) is provided with a crimping hole (1101) for crimping a current-carrying wire.

6. The anti-slip boltless integral suspension string according to claim 1, characterized in that: The head of the latch pin (102) is provided with a chamfer.

7. The anti-slip boltless integral suspension string according to claim 1, characterized in that: The clamping opening (108) of the load-bearing cable string clamp (100) is arc-shaped, and the inner wall of the clamping opening (108) is provided with a plurality of anti-slip grooves arranged at intervals.

8. The anti-slip boltless integral suspension string according to claim 1, characterized in that: The inner side of the lifting ear (109) is protruded to form an arc-shaped boss (1094), and the two arc-shaped bosses (1094) on the two clamping blocks (1) are assembled to form an arc surface.

9. The anti-slip boltless integral suspension string according to claim 1, characterized in that: A weight-reducing groove (111) is provided on the side surface of each clamping block (1).

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