Overhead line system cantilever system for electrified railway

Abstract

The utility model discloses an overhead line system cantilever system for electrified railway, including flat cantilever, inclined cantilever and positioning device, flat cantilever is connected with the top of inclined cantilever, flat cantilever and inclined cantilever tail end are respectively connected with insulator, and the cantilever base is installed on the pillar in the overhead line system, and the cantilever base is connected with the insulator. A cantilever support is arranged between the flat cantilever and the inclined cantilever and used for supporting the flat cantilever and the inclined cantilever respectively, and a positioning device is arranged on the inclined cantilever and used for positioning a contact line. According to the utility model, the stability, the reliability and the maintainability of the overhead line system cantilever system can be ensured, and the increasing power supply connection requirements of electrified railways can be met through various structural combinations.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrified railways and mechanical engineering, and particularly relates to a contact network wrist arm system for electrified railways. Background Art

[0002] The overhead contact network is the power supply system of the electrified railway. It is suspended above the railway track through the overhead contact network arm system. Generally, the overhead contact network arm system consists of pillars, suspension devices and tensioning devices. The main functions of the overhead contact network arm system are: (1) Supporting the overhead contact network: The overhead contact network arm system suspends the overhead contact network above the railway track through pillars so that the overhead contact network can cover the entire railway line. It can bear the weight of the overhead contact network and connect the overhead contact network to the pillars through the suspension device. (2) Maintaining the position of the overhead contact network: The overhead contact network arm system fixes the overhead contact network in a certain position through the suspension device to ensure that the overhead contact network does not shake or deviate from the track. This can ensure the stability and reliability of the power supply of the electrified railway. (3) Adjusting the tension of the overhead contact network: The overhead contact network arm system adjusts the tension of the overhead contact network through the tensioning device. The overhead contact network requires appropriate tension to maintain good contact performance to ensure smooth and efficient power transmission. Therefore, the overhead contact network arm system is a vital component of the electrified railway power supply system. It plays the role of supporting, maintaining and adjusting the position and tension of the overhead contact network to ensure the normal transmission of power and the safety and stability of railway operation.

[0003] However, the existing arm-and-cantilever system still has the following technical defects: (1) There are many parts, resulting in a heavy weight of the contact network; (2) There are many standard connection parts and many connection thread pairs, which makes the construction and installation of parts complicated, inefficient, and prone to loosening and slipping; (3) There are many parts and the thread pairs are prone to loosening, resulting in heavy maintenance tasks, cumbersome replacement and installation, and inconvenient operation and maintenance. In addition, with the continuous development of electrified railway technology, the contact network arm-and-cantilever system needs to be continuously updated and upgraded to adapt to new power supply requirements and standards. Therefore, some old systems may not meet the new technical requirements and need to be modified or replaced. (4) The existing connectors with a clamp structure often have a connection end integrally formed on the arc surface, resulting in long-term stress on the arc surface of the clamp, making the clamp easy to deform, fatigue or crack, seriously affecting the service life of the connector. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the utility model provides a contact network arm system for electrified railways, which can not only ensure the stability, reliability and maintainability of the contact network arm system, but also meet the growing power supply connection needs of electrified railways through various structural combinations.

[0005] The main technical solutions adopted in this utility model are:

[0006] A contact network arm system for electrified railways, comprising a flat arm, an oblique arm and a positioning device, wherein a load-bearing cable seat is installed on the flat arm for supporting and fixing the load-bearing cable, the flat arm is connected to the oblique arm through a load-bearing cable seat or a support connector, the ends of the flat arm and the oblique arm are respectively connected to insulators, the insulators are installed on a pillar in the contact network system through an arm base, a arm support is arranged between the flat arm and the oblique arm, one end of the arm support is connected to the flat arm through a support connector, and the other end is connected to the oblique arm through a first positioning ring or a support connector, for supporting the flat arm and the oblique arm respectively, and the oblique arm is provided with a positioning device for positioning the contact line;

[0007] The support connector is a snap-on structure, including a support connector body and a snap-on clamp I, and the snap-on clamp I is snap-connected to one end of the support connector body, and the other end is locked by a plurality of bolts, and a pin structure is used at the locking end to realize the connection of parts, and the snap-on end, the locking end and the connection end of the support connector are located in the same straight line;

[0008] The first positioning ring is a snap-on structure, including a first positioning ring body and a snap-on clamp II, the snap-on clamp II is snap-connected to one end of the first positioning ring body, and the lug at the snap-on end of the first positioning ring body is connected to one end of the rotating double ears through a pin structure, the other end of the first positioning ring body is locked and connected by a plurality of bolts, and a pin structure is used at the locking end to realize the connection of components, and the snap-on end, locking end and connecting end of the first positioning ring are located in the same straight line.

[0009] Preferably, the positioning device includes a wrist positioning tube, a positioning support tube and a positioning piece, wherein one end of the wrist positioning tube is connected to the oblique wrist, and a positioning support tube is connected between the oblique wrist and the wrist positioning tube, wherein one end of the positioning support tube is connected to the wrist positioning tube through a support connector, and the other end is connected to the oblique wrist through a support connector or is directly connected to the load-bearing cable seat.

[0010] Preferably, one end of the wrist arm positioning tube is connected to the oblique wrist arm through a second positioning ring or is directly connected to the first positioning ring or the support connector on the oblique wrist arm.

[0011] Preferably, the second positioning ring is a snap-on structure, comprising a second positioning ring body and a snap-on clamp IV, the snap-on clamp IV is snap-connected to one end of the second positioning ring body, and the lug at the snap-on end of the second positioning ring body is connected to one end of the rotating double ears through a pin structure, and the other end of the second positioning ring body is locked and connected by a plurality of bolts.

[0012] Preferably, the positioning member includes a positioner and a positioning support, one end of the positioner is mounted on the wrist positioning tube through the positioning support, and the extending direction of the positioner is opposite to or the same as the extending direction of the top end of the flat wrist.

[0013] Preferably, the positioning support includes a positioning support body and a positioning support clamp, and the positioning support clamp and the positioning support body are snap-connected at one end and locked by a plurality of bolts at the other end, and a connecting portion is extended from the snap-on end of the positioning support body for connecting and installing the locator.

[0014] Preferably, the positioner is an arcuate or rectangular structure.

[0015] Preferably, the positioning member is an anchor positioning clip, and the anchor positioning clip is installed on the wrist arm positioning tube.

[0016] Preferably, the anchor positioning clip is a snap-on structure, including an anchor clip body and a snap-on clamp V, and the snap-on clamp V is snap-connected to one end of the anchor clip body and locked at the other end by a number of bolts. The snap-on end of the anchor clip body is connected to a clip by a pin structure for fixing the contact line.

[0017] Beneficial effects: The utility model provides a contact network arm system for electrified railways, which has the following advantages:

[0018] (1) The utility model greatly simplifies the system structure, reduces the number of components and connection standard parts, and makes the product components highly interchangeable. Various structural combinations can be used to meet the growing connection needs of electrified railways.

[0019] (2) The utility model optimizes the structural design of the clip-on clamp to avoid integrally forming the connection end on the arc surface of the clamp, which is not only conducive to improving the metal forging forming accuracy and improving the material utilization rate, but also avoids local stress concentration on the arc surface of the clamp, thereby preventing accelerated fatigue damage of the clamp.

[0020] (3) The utility model adopts a snap-on (bite-type) clamp structure to achieve connection, which not only reduces the use of connecting thread pairs, but also makes the construction, installation and disassembly of parts more convenient and efficient, and is not prone to loosening or slipping, which is convenient for early construction and installation and later operation, maintenance and overhaul. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the combined positive positioning structure in the wrist-arm system of Example 1;

[0022] Figure 2 Schematic diagram of the combined anti-positioning structure in the wrist-arm system of Example 2;

[0023] Figure 3It is a schematic diagram of the non-combined positive positioning structure in the wrist-arm system of Example 3;

[0024] Figure 4 This is a schematic diagram of the non-combined anti-positioning structure in the wrist-arm system of Example 4;

[0025] Figure 5 This is a schematic diagram of the combined positive positioning special positioning structure in the arm-cantilever system of Example 5;

[0026] Figure 6 Schematic diagram of the anchor support positioning structure in the cantilever arm system of Example 6;

[0027] Figure 7 Schematic diagram of the structure supporting the connector Figure Ⅰ ;

[0028] Figure 8 Schematic diagram of the structure supporting the connector Figure II ;

[0029] Fig. 9 It is a schematic diagram of the cooperation and connection between the first positioning ring and the rotating ears;

[0030] Fig.10 It is a structural schematic diagram of the load-bearing cable seat;

[0031] Fig.11 This is a schematic diagram of the positioning support structure of Example 1;

[0032] Fig.12 It is a schematic diagram of the matching connection between the second positioning ring and the rotating ears;

[0033] Fig.13 It is a schematic diagram of the special structure of the positioner;

[0034] Fig.14 This is a structural schematic diagram of the anchor support positioning clip;

[0035] In the figure: flat wrist 1, oblique wrist 2, load-bearing cable seat 3, load-bearing cable seat body 3-1, snap-on clamp III 3-2, wire support clamp 3-3, wrist base 4, wrist support 5, support connector 6, support connector body 6-1, snap-on clamp I 6-2, first positioning ring 7, first positioning ring body 7-1, snap-on clamp II 7-2, positioning device 8, wrist positioning tube 8-1, positioning support tube 8-2, positioner 8-3, positioning support 8-4, positioning support body 8-41, positioning support clamp 8-42, connecting part 8-43, anchor support positioning clip 8-5, anchor support clip body 8-51, snap-on clamp V 8-52, bolt 9, pin structure 10, rotating double ears 11, insulator 12, second positioning ring 13, second positioning ring body 13-1, snap-on clamp IV 13-2. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application. Example

[0037] A contact network arm system for electrified railways, such as Figure 1 As shown, it is a combined positive positioning structure in the arm system, including a flat arm 1, an oblique arm 2 and a positioning device 8. The top of the flat arm 1 is connected to the top of the oblique arm 2 through a load-bearing cable seat 3, which is used to support and fix the load-bearing cable; the ends of the flat arm 1 and the oblique arm 2 are respectively connected to insulators 12, and the insulators 12 are installed on the pillars in the contact network system through the arm base 4; an arm support 5 is provided between the flat arm 1 and the oblique arm 2, and one end of the arm support 5 is connected to the flat arm 1 through a support connector 6, and the other end is connected to the oblique arm 2 through a first positioning ring 7, which is used to support the flat arm 1 and the oblique arm 2 respectively; a positioning device 8 is provided on the oblique arm 2 for positioning the contact line.

[0038] In this embodiment 1, the positioning device 8 includes a wrist positioning tube 8-1, a positioning support tube 8-2, a positioner 8-3 and a positioning support 8-4, wherein one end of the wrist positioning tube 8-1 is connected to the first positioning ring 7, a positioning support tube 8-2 is connected between the oblique wrist 2 and the wrist positioning tube 8-1, and both ends of the positioning support tube 8-2 are respectively connected to the oblique wrist 2 and the wrist positioning tube 8-1 through a support connector 6; one end of the positioner 8-3 is installed on the wrist positioning tube 8-1 through a positioning support 8-4, and is located between the first positioning ring 7 and the support connector 6. The extension direction of the positioner 8-3 is the same as the extension direction of the top end of the flat wrist 1. In this embodiment 1, the positioner 8-3 is a rectangular structure.

[0039] like Figure 7 As shown, the support connector 6 in this embodiment 1 is a snap-on structure, including a support connector body 6-1 and a snap-on clamp I 6-2, and the snap-on clamp I 6-2 is snap-on connected to the support connector body 6-1 at one end, and the other end is locked by a plurality of bolts 9 (preferably 1), and a pin structure 10 is used at the locking end to achieve component connection, and the snap-on end, locking end and connection end of the support connector 6 are located in the same straight line. The support connector structure in this embodiment 1 can be, but is not limited to, the above structure, such as Figure 8 As shown, the other end of the supporting connector body is locked and connected to the snap-on clamp I6-2 by two bolts 9. The number of bolts and the size of the supporting connector can be adjusted according to the size of the actual connected parts.

[0040] like Fig. 9 As shown, the first positioning ring 7 of this embodiment 1 is a snap-on structure, including a first positioning ring body 7-1 and a snap-on clamp II 7-2, the snap-on clamp II 7-2 is snap-on connected to one end of the first positioning ring body 7-1, and the lug at the snap-on end of the first positioning ring body 7-1 is connected to one end of the rotating double lug 11 through a pin structure 10, the other end of the first positioning ring body 7-1 is locked and connected by a plurality of bolts (preferably two), and the pin structure 10 is used at the locking end to achieve component connection, and the snap-on end, locking end and connection end of the first positioning ring 7 are located in the same straight line. In this embodiment 1, the size of the first positioning ring can be adjusted according to the size of the actual connected parts.

[0041] like Fig.10 As shown, the load-bearing cable seat 3 in this embodiment 1 is a snap-on structure, including a load-bearing cable seat body 3-1, a snap-on clamp III 3-2 and a wire support clamp 3-3, wherein the snap-on clamp III 3-2 is snap-on connected to the load-bearing cable seat body 3-1 at one end, and is locked and connected at the other end by a plurality of bolts 9 (preferably two), and a plurality of pin structures 10 are used at the locking end to realize the connection of components, and the wire support clamp 3-3 is installed at the snap-on end of the load-bearing cable seat body 3-1 to support and fix the load-bearing cable. The load-bearing cable seat in this embodiment 1 can be, but is not limited to, the above-mentioned structure, and the existing structures that can realize the connection of the wrist arm and the installation of the load-bearing cable can be applicable, and the size of the load-bearing cable seat 3 can be adjusted according to the size of the actual connected components.

[0042] like Fig.11 As shown, the positioning support 8-4 of this embodiment 1 is a snap-on structure, including a positioning support body 8-41 and a positioning support clamp 8-42, and the positioning support clamp 8-42 and the positioning support body 8-41 are snap-on connected at one end, and the other end is locked and connected by a plurality of bolts 9 (preferably two), and the snap-on end of the positioning support body 8-41 is extended with a connecting portion 8-43 for connecting and installing the locator 8-3. The size of the positioning support in this embodiment 1 and the structure of the connecting portion can be adaptively adjusted according to the size of the actual connected parts. Example

[0043] A contact network arm system for electrified railways, such as Figure 2As shown, it is a combined anti-positioning structure in the cantilever system, including a flat cantilever 1, an oblique cantilever 2 and a positioning device 8, wherein one end of the positioning support tube 8-2 in the positioning device 8 is connected to the cantilever positioning tube 8-1 through a support connector 6, and the other end is directly connected to the load-bearing cable seat, and one end of the positioner 8-3 is installed on the cantilever positioning tube 8-1 through a positioning support 8-4, and is located at the end away from the first positioning ring 7. The extension direction of the positioner 8-3 is opposite to the extension direction of the top end of the flat cantilever 1, and the rest of the structure is the same as that of Example 1. Example

[0044] A contact network arm system for electrified railways, such as Figure 3 As shown, it is a non-combined positive positioning structure in the arm system, including a flat arm 1, an oblique arm 2 and a positioning device 8. The flat arm 1 is connected to the oblique arm 2 through a support connector 6, and a load-bearing cable seat 3 is installed on the flat arm 1 to support and fix the load-bearing cable; the ends of the flat arm 1 and the oblique arm 2 are respectively connected to insulators 12, and the insulators 12 are installed on the pillars in the contact network system through the arm base 4; an arm support 5 is arranged between the flat arm 1 and the oblique arm 2, and the two ends of the arm support 5 are respectively connected to the flat arm 1 and the oblique arm 2 through a support connector 6; a positioning device 8 is arranged on the oblique arm 2 to position the contact line.

[0045] In this embodiment 3, the positioning device 8 includes a wrist positioning tube 8-1, a positioning support tube 8-2 and a positioner 8-3, wherein one end of the wrist positioning tube 8-1 is connected to the oblique wrist 2 via a second positioning ring 13, and the remaining structures and connection methods are the same as those in embodiment 1, and the extension direction of the positioner 8-3 is the same as the extension direction of the top end of the flat wrist.

[0046] like Fig.12 As shown, in this embodiment 3, the second positioning ring 13 is a snap-on structure, including a second positioning ring body 13-1 and a snap-on clamp IV 13-2, the snap-on clamp IV 13-2 is snap-on connected to one end of the second positioning ring body 13-1, and the lug at the snap-on end of the second positioning ring body 13-1 is connected to one end of the rotating double ears 11 through a pin structure 10, and the rotating double ears 11 are connected to the arm positioning tube 8-1, and the other end of the second positioning ring body is locked and connected by a plurality of bolts 9 (preferably two). In this embodiment 3, the size of the second positioning ring 13 can be adjusted according to the size of the actual connected parts. Example

[0047] A contact network arm system for electrified railways, such as Figure 4As shown, it is a non-combined reverse positioning structure in the arm system, wherein one end of the positioner 8-3 is mounted on the arm positioning tube 8-1 through the positioning support 8-4 and is located at the end away from the second positioning ring 13, the extension direction of the positioner 8-3 is opposite to the extension direction of the top of the flat arm 1, and the positioner 8-3 is a rectangular structure. The connection relationship of the remaining structures is the same as that of the present embodiment 3.

[0048] In this embodiment 4, the lengths of the wrist arm positioning tube 8-1 and the positioning support tube 8-2 can be determined according to the actual installation position of the positioning support 8-4. Example

[0049] A contact network arm system for electrified railways, such as Figure 5 As shown, it is a special positioning structure of non-combined positive positioning in the cantilever arm system, wherein, Fig.13 As shown, the positioner 8-3 is a bow-shaped structure, and the connecting portion 8-43 of the positioning support 8-4 is adaptively adjusted in length and angle according to the bow-shaped positioner structure. The remaining structures and their connection methods are the same as those in Example 1. Example

[0050] A contact network arm system for electrified railways, such as Figure 6 As shown, the arm anchor support positioning structure in the arm system, wherein the positioning device 8 includes an arm positioning tube 8-1, a positioning support tube 8-2, and an anchor support positioning clip 8-5, one end of the arm positioning tube 8-1 is connected to the first positioning ring 7, the oblique arm 2 and the arm positioning tube 8-1 are connected with the positioning support tube 8-2 through the support connector 6, and the anchor support positioning clip 8-5 is installed on the arm positioning tube 8-1. The remaining structures and their connection methods are the same as those in Example 1.

[0051] like Fig.14 As shown, the anchor support positioning clip 8-5 in this embodiment 6 is a snap-on structure, including an anchor support clip body 8-51 and a snap-on clamp VI 8-52, and the snap-on clamp VI 8-52 is snap-on connected to one end of the anchor support clip body 8-51, and the other end is locked by a plurality of bolts 9 (preferably two), and the snap-on end of the anchor support clip body 8-51 is connected to a clip 8-53 through a pin structure 10, which is used to fix the contact line and prevent the contact line from slipping off the wire clamp. The anchor support positioning clip in this embodiment 6 can be, but is not limited to, the above structure, and any existing structure that can achieve connection can be applied.

[0052] The various parts of the utility model can adopt metal die forging technology, which can optimize the complex structure and production technology of casting, flanging riveting, excessive thread pair connection, etc. in the past, so that the product structure is simpler and the mechanical performance is more superior.

[0053] In the present invention, connecting devices such as the supporting connector, the first positioning ring, the second positioning ring, etc. can be selectively applied according to actual connection requirements, and the parts can be interchangeable when necessary. The different connection structures of the various embodiments of the present invention can be used in combination.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A contact network arm system for electrified railway, characterized in that: It comprises a flat arm, an oblique arm and a positioning device, wherein a load-bearing cable seat is installed on the flat arm for supporting and fixing the load-bearing cable, the flat arm is connected to the oblique arm through a load-bearing cable seat or a support connector, the ends of the flat arm and the oblique arm are respectively connected to insulators, the insulators are installed on a pillar in the contact network system through an arm base, a arm support is arranged between the flat arm and the oblique arm, and one end of the arm support is connected to the flat arm through a support connector, and the other end is connected to the oblique arm through a first positioning ring or a support connector, so as to respectively support the flat arm and the oblique arm, and a positioning device is arranged on the oblique arm for positioning the contact line; The support connector is a snap-on structure, including a support connector body and a snap-on clamp I, and the snap-on clamp I is snap-connected to one end of the support connector body, and the other end is locked by a plurality of bolts, and a pin structure is used at the locking end to realize the connection of parts, and the snap-on end, the locking end and the connection end of the support connector are located in the same straight line; The first positioning ring is a snap-on structure, including a first positioning ring body and a snap-on clamp II, the snap-on clamp II is snap-connected to one end of the first positioning ring body, and the lug at the snap-on end of the first positioning ring body is connected to one end of the rotating double ears through a pin structure, the other end of the first positioning ring body is locked and connected by a plurality of bolts, and a pin structure is used at the locking end to realize the connection of components, and the snap-on end, locking end and connecting end of the first positioning ring are located in the same straight line.

2. The overhead contact arm system for electrified railway according to claim 1, characterized in that: The positioning device includes a wrist positioning tube, a positioning support tube and a positioning piece, wherein one end of the wrist positioning tube is connected to the oblique wrist, and a positioning support tube is connected between the oblique wrist and the wrist positioning tube, wherein one end of the positioning support tube is connected to the wrist positioning tube through a support connector, and the other end is connected to the oblique wrist through a support connector or is directly connected to a load-bearing cable seat.

3. The overhead contact arm system for electrified railway according to claim 1, characterized in that: One end of the arm positioning tube is connected to the oblique arm through a second positioning ring or is directly connected to the first positioning ring or the support connector on the oblique arm.

4. The overhead contact arm system for electrified railway according to claim 3, characterized in that: The second positioning ring is a snap-on structure, comprising a second positioning ring body and a snap-on clamp IV, wherein the snap-on clamp IV is snap-connected to one end of the second positioning ring body, and the lug at the snap-on end of the second positioning ring body is connected to one end of the rotating double ears through a pin structure, and the other end of the second positioning ring body is locked and connected by a plurality of bolts.

5. The overhead contact arm system for electrified railway according to claim 2, characterized in that: The positioning member comprises a positioner and a positioning support, one end of the positioner is mounted on the wrist positioning tube through the positioning support, and the extending direction of the positioner is opposite to or the same as the extending direction of the top end of the flat wrist.

6. The overhead contact arm system for electrified railway according to claim 5, characterized in that: The positioning support includes a positioning support body and a positioning support clamp, and the positioning support clamp and the positioning support body are snap-connected at one end and locked and connected by a plurality of bolts at the other end, and a connecting portion is extended from the snap-on end of the positioning support body for connecting and installing a locator.

7. The overhead contact arm system for electrified railway according to claim 5 or 6, characterized in that: The positioner is an arcuate or rectangular structure.

8. The overhead contact arm system for electrified railway according to claim 2, characterized in that: The positioning member is an anchor support positioning clip, and the anchor support positioning clip is installed on the wrist arm positioning tube.

9. The overhead contact arm system for electrified railway according to claim 8, characterized in that: The anchor positioning clip is a snap-on structure, including an anchor clip body and a snap-on clamp V, and the snap-on clamp V is snap-connected to one end of the anchor clip body and locked at the other end by a number of bolts. The snap-on end of the anchor clip body is connected to a clip by a pin structure for fixing the contact line.

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