A counter-positioned cantilever structure for overhead contact system

Abstract

The application discloses a reverse positioning type arm structure for a catenary, which comprises a horizontal arm and an inclined arm on an arm support, one end of the inclined arm is connected to the horizontal arm through an arm connector, a first support connector in the middle of the inclined arm is connected to a second support connector of the horizontal arm through an arm support, a lower end of the first support connector is connected to a horizontal positioning tube, the other side of the positioning tube is connected to the lower part of the arm connector through a positioning tube support, and positioners on both sides of the lower part of the positioning tube are connected to the lower part of a third support connector in the middle of the positioning tube.

Description

Technical Field

[0001] This invention relates to the field of overhead contact line technology, and in particular to a reverse positioning type cantilever structure for overhead contact lines. Background Technology

[0002] In electrified railways, the safe and efficient operation of high-speed railways is of paramount importance to the development of the entire railway network, and the overhead contact system is the most prone to problems. As a crucial component of the electrified railway power supply system, the performance and condition of the overhead contact system directly affect the safety and reliability of train operation. The overhead contact system is a special power supply line in the railway system, erected above the railway line, and mainly consists of contact suspension, support devices, positioning devices, cantilever supports, and auxiliary components.

[0003] The contact suspension system includes connecting components such as the contact wire, droppers, and catenary wire; the support device includes the cantilever structure, insulators, and other essential connecting parts, primarily used to support the contact suspension; the positioning device includes positioning tubes, positioners, positioner clamps, and connecting parts, used to fix the position of the contact wire to ensure that it remains within the pantograph's sliding track during train operation, preventing detachment. Positioning by pulling the contact wire towards the support post using positioning tubes and positioners is called positive positioning, while positioning away from the support post is called reverse positioning. In existing technologies, the cantilever structure is complex, and while ensuring load-bearing strength, rapid installation is not possible. Summary of the Invention

[0004] The purpose of this invention is to provide a reverse-positioning contact wire cantilever structure that is simple in structure, greatly reduces the number of overall connecting structures, and at the same time ensures stable support.

[0005] To achieve the above objectives, the present invention provides a reverse positioning type contact wire cantilever structure, including a flat cantilever and an oblique cantilever located on a cantilever support. One end of the oblique cantilever is connected to the flat cantilever via a cantilever connector. A first support connector in the middle is connected to a second support connector on the flat cantilever via a cantilever support. The lower end of the first support connector is connected to a horizontal positioning tube. The upper part of the positioning support on the other side of the positioning tube is connected to the lower part of the cantilever connector via a positioning tube support. The positioners on both sides below the positioning support are connected to the lower part of the third support connector in the middle of the positioning tube.

[0006] The positioning tube support, the positioning tube, and the inclined wrist arm form an obtuse triangle, and the wrist arm support, the flat wrist arm, and the inclined wrist arm form a right triangle. The third support connector is located inside the positioning support in the vertical direction.

[0007] Preferably, the first support connector includes a first connecting seat and a second connecting seat connected to opposite sides. The upper part of the first connecting seat and the second connecting seat are provided with a first lifting lug for connecting to the wrist arm support, and the middle part of the first connecting seat is provided with an arc-shaped first connecting part. The upper and lower sides of the first connecting part are provided with first fixing holes.

[0008] The first connector has a first slot corresponding to the second connector below it, and the first connector has an inwardly protruding arc-shaped first protrusion above it.

[0009] Preferably, a first hook body connected to the positioning tube is provided below the first connecting seat, and a first connecting ring connected to the closed end of the first hook body is provided on one side of the positioning tube.

[0010] Preferably, both the second and third support connectors include a third connecting seat and a fourth connecting seat connected to opposite sides. The second connecting portion of the third and fourth connecting seats is provided with a second fixing hole above and below, and the lower end of the second connecting portion is provided with a second lifting lug.

[0011] Preferably, the positioning support includes a fifth connecting seat and a sixth connecting seat. The fifth connecting seat and the sixth connecting seat are respectively provided with outwardly symmetrical connecting legs below the third connecting part, and a third lifting lug connected to the positioning tube support above them. The third connecting part is provided with a third fixing hole at both the top and bottom. The size of the connecting legs decreases from top to bottom. The end of the connecting leg is provided with a second hook body connected to the locator. One end of the locator is provided with a second connecting ring connected to the closed end of the second hook body.

[0012] Preferably, the wrist arm connector includes a seventh connector and an eighth connector. The seventh connector has an extension post connected to the load-bearing cable seat on its upper part, and a second slot corresponding to the eighth connector is provided below the extension post. The extension post has a strip-shaped through hole on its inner side.

[0013] A stud of a load-bearing cable seat is inserted through the hole in the middle of the upper part of the heightening column. A pressure block is provided above the load-bearing cable seat. The pressure block has protrusions on both sides that correspond to the grooves on both sides of the load-bearing cable seat. The inner side of the load-bearing cable seat has double fixing grooves for connecting with the load-bearing cable.

[0014] Preferably, the seventh and eighth connecting seats are provided with double ears below, which are respectively connected to the positioning tube support and the inclined wrist arm. The middle of the double ears is provided with an arc-shaped groove. The upper and lower sides of the fourth connecting part of the seventh and eighth connecting seats are provided with fourth fixing holes.

[0015] Preferably, the middle part of the rod of the positioner is a smooth structure that convexes upwards, and the other end of the rod is provided with a protruding fourth lifting lug that is connected to the windproof line.

[0016] Preferably, the outer sides of the first fixing hole, the second fixing hole, the third fixing hole, and the fourth fixing hole are all provided with a reinforcing layer, the outer sides of the first connecting part, the second connecting part, the third connecting part, and the fourth connecting part are all provided with reinforcing ribs, and the middle part of the inner side of the through hole is also provided with a reinforcing rib.

[0017] Preferably, the first connecting ring and the second connecting ring have notches on their upper and lower sides, and the inner side of the second connecting ring has a hole for connecting an electrical connection wire.

[0018] Therefore, the present invention adopts the above-mentioned anti-positioning contact wire cantilever structure, which is simple in structure, greatly reduces the number of overall connecting structures, and at the same time ensures stable support.

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of an embodiment of a reverse-positioning contact wire cantilever structure according to the present invention;

[0021] Figure 2 This is a schematic diagram of the first support connector in a reverse-positioning contact wire cantilever structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the second support connector in a reverse positioning contact wire cantilever structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the cantilever connector in a cantilever structure for a reverse-positioning contact network according to the present invention.

[0024] Figure 5 This is a schematic diagram of the positioning support in a reverse positioning contact wire cantilever structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the positioner in a reverse positioning type contact wire cantilever structure of the present invention;

[0026] Figure 7 This is a schematic diagram of a second embodiment of the wrist arm connector in a reverse positioning contact wire wrist arm structure of the present invention.

[0027] Figure Labels

[0028] 1. Wrist support; 2. Flat wrist arm; 3. Inclined wrist arm; 4. Wrist support; 5. Positioning tube support; 6. Reinforcing layer; 7. Reinforcing rib; 8. Notch;

[0029] 10. First support connector; 101. First connecting seat; 102. Second connecting seat; 103. First lifting lug; 104. First connecting part; 105. First fixing hole; 106. First hook body; 107. First protrusion; 108. First slot;

[0030] 11. Second support connector; 111. Third connecting seat; 112. Fourth connecting seat; 113. Second connecting part; 114. Second fixing hole; 115. Second lifting lug; 12. Third support connector;

[0031] 13. Wrist arm connector; 131. Seventh connector; 132. Eighth connector; 133. Heightening post; 134. Second slot; 135. Through hole; 136. Fourth fixing hole; 137. Double ears; 138. Fourth connecting part;

[0032] 14. Cable support; 141. Pressure block; 142. Protrusion;

[0033] 15. Positioning support; 151. Fifth connecting seat; 152. Sixth connecting seat; 153. Third connecting part; 154. Connecting leg; 155. Third fixing hole; 156. Second hook body; 157. Third lifting lug;

[0034] 16. Positioning tube; 161. First connecting ring;

[0035] 17. Positioner; 171. Second connecting ring; 172. Fourth lifting lug. Detailed Implementation

[0036] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0038] As shown in the figure, a reverse-positioning contact wire cantilever structure includes a flat cantilever 2 and an oblique cantilever 3 located on a cantilever support 1. The cantilever support 1 provides support for the flat cantilever 2 and the oblique cantilever 3. One end of the oblique cantilever 3 is connected to the flat cantilever 2 via a cantilever connector 13, which provides a stable connection at one end of the oblique cantilever 3. A first support connector 101 in the middle of the oblique cantilever 3 is connected to a second support connector 11 of the flat cantilever 2 via a cantilever support 4, which provides a stable connection between the oblique cantilever 3 and the flat cantilever 2, thereby ensuring stable support for the oblique cantilever 3 and the flat cantilever 2.

[0039] The lower end of the first support connector 101 is connected to the horizontal positioning tube 16, thereby fixing one end of the positioning tube 16. The upper part of the positioning support 15 on the other side of the positioning tube 16 is connected to the lower part of the wrist arm connector 13 through the positioning tube support 5. The positioning tube support 5 fixes the other end of the positioning tube 16, thereby stabilizing both sides of the positioning tube 16 and ensuring a stable connection of the double bearing and double guide.

[0040] The positioners 17 on both sides below the positioning support 15 are connected to the lower part of the third support connector 12 in the middle of the positioning tube 16, and the positioning support 15 and the third support connector 12 achieve a stable connection of the positioners 17. The third support connector 12 is located inside the positioning support 15 in the vertical direction, realizing the effective outward pulling of the contact wire, thereby balancing the impact of train vibration.

[0041] The positioning tube support 5, positioning tube 16, and inclined cantilever arm 3 form an obtuse triangle to ensure the stability of the positioning tube during high-frequency vibrations caused by passing trains. The cantilever arm support 4, flat cantilever arm 2, and inclined cantilever arm 3 form a right triangle to ensure the fixed position of the inclined cantilever arm 3, thereby achieving the stability of the positioning tube 16.

[0042] The first support connector 10 includes a first connecting seat 101 and a second connecting seat 102 connected to opposite sides. Both the first connecting seat 101 and the second connecting seat 102 have an arc-shaped first connecting portion 104 in their middle, which enables a stable connection on the inclined wrist arm 3. The upper and lower sides of the first connecting portion 104 are provided with first fixing holes 105, which facilitate a stable connection between the first connecting portions 104. The upper parts of both the first connecting seat 101 and the second connecting seat 102 are provided with first lifting lugs 103 that connect to the wrist arm support 4, enabling the wrist arm support 4 to be connected.

[0043] A first arc-shaped protrusion 107 protrudes inward above the first connecting part 104, enabling a tight connection between the first connecting parts 104. It also provides space for fixing the wrist arm support 4. A first slot 108 corresponding to the second connecting part 102 is provided below the first connecting seat 101, ensuring a stable connection of the second connecting seat 102 and further improving its load-bearing strength. A first hook 106 connected to the positioning tube 16 is provided below the first connecting seat 104, enabling connection between the two. A first connecting ring 161 connected to the closed end of the first hook 106 is provided on one side of the positioning tube 16, achieving a stable connection between the positioning tube 16 and the first connecting seat 104 through the connection between the first connecting ring 161 and the first hook 106.

[0044] The second support connector 11 and the third support connector 12 have the same structure. The second support connector 11 is used to connect the wrist arm support 4 to the flat wrist arm 2, and the third support connector 12 is used to connect the windproof wire at one end of the positioner 17 to the positioning tube 16. Both the second support connector 11 and the third support connector 12 include a third connecting seat 111 and a fourth connecting seat 112 connected to opposite sides. The third connecting seat 111 and the fourth connecting seat 112 are provided with second fixing holes 114 at their upper and lower parts, respectively, so as to achieve a stable connection between the third connecting seat 111 and the fourth connecting seat 112. The lower end of the second connecting part 113 of the third connecting seat 111 and the fourth connecting seat 112 is provided with a second lifting lug 125 for connecting to the wrist arm support 4, so as to achieve a stable connection between the wrist arm support 4 or the windproof wire.

[0045] The middle part of the rod of the positioner 17 has an upward convex smooth structure, which improves the overall load-bearing strength and elasticity. The other end of the positioner 17 is provided with a protruding fourth lifting lug 172 that connects to the windproof line, and the fourth lifting lug 172 secures the windproof line.

[0046] The wrist arm connector 13 includes a seventh connector 131 and an eighth connector 132. The upper and lower sides of the fourth connecting portion 138 of the seventh connector 131 and the eighth connector 132 are provided with fourth fixing holes 136, which enable a stable connection between the seventh connector 131 and the eighth connector 132. Below the seventh connector 131 and the eighth connector 132 are double ears 137, which connect to the positioning tube support 5 and the inclined wrist arm 3 respectively, ensuring a stable connection between the positioning tube support 5 and the inclined wrist arm 3. The middle of the double ears 137 is provided with an arc-shaped groove to allow free movement of the positioning tube support 5 and the inclined wrist arm 3 during a stable connection, facilitating quick installation and convenient operation.

[0047] In addition, the wrist arm connector can also provide Figure 7 The structure shown is identical except for the heightening column.

[0048] Above the seventh connecting seat 131 is a heightening column 133 connected to the load-bearing cable seat 14. Based on the terrain, the overall height is increased from the original structure, raising the height of the load-bearing cable and preventing accidents caused by excessive downward pressure. Below the heightening column 133 is a second slot 134 corresponding to the eighth connecting seat 132, ensuring a stable connection of the eighth connecting seat 132 within the seventh connecting seat 131. The inner side of the heightening column 133 has a strip-shaped through hole 135, with a reinforcing rib 7 in the center of the inner side of the through hole 135, which improves the overall load-bearing strength.

[0049] A stud of the load-bearing cable seat 14 passes through the hole in the middle of the upper part of the riser column 133, thereby fixing the load-bearing cable seat 14 and the pressure block 141. A pressure block 141 is provided above the load-bearing cable seat 14, and protrusions 142 corresponding to the grooves on both sides of the pressure block 141 are provided. The position of the load-bearing cable is fixed by the pressure block 141 and the protrusions 142. The inner side of the load-bearing cable seat 14 has double fixing grooves for connecting with the load-bearing cable, ensuring a stable connection of the load-bearing cable.

[0050] The positioning support 15 includes a fifth connecting seat 151 and a sixth connecting seat 152. The fifth connecting seat 151 and the sixth connecting seat 152 each have outwardly symmetrical connecting legs 154 below their third connecting portions 153. Each third connecting portion 153 has a third fixing hole 155 at both the top and bottom, which facilitates a stable connection between the fifth connecting seat 151 and the sixth connecting seat 152. Simultaneously, the connecting legs 154 connect to the positioner 17. The dimensions of the connecting legs 154 decrease sequentially from top to bottom to ensure elasticity and prevent excessive stiffness that could prevent ineffective buffering of high-frequency vibrations. The end of the connecting leg 154 has a second hook 156 that connects to the positioner 17. One end of the positioner 17 has a second connecting ring 171 that connects to the closed end of the second hook 156. The second hook 156 and the second connecting ring 171 achieve a stable connection between the positioner 17 and the connecting leg 154. The third connecting part 153 is provided with a third lifting lug 157 above it, which is connected to the positioning tube support 5, to ensure the stable fixation of the positioner 17.

[0051] A reinforcing layer 6 is provided on the outer side of the first fixing hole 105, the second fixing hole 114, the third fixing hole 124, and the fourth fixing hole 136 to ensure the load-bearing strength of each fixing hole. A reinforcing rib 7 is provided on the outer side of the first connecting part 104, the second connecting part 113, the third connecting part 123, and the fourth connecting part 138 to further improve their load-bearing strength.

[0052] The first connecting ring 161 and the second connecting ring 171 have notches 8 on their upper and lower sides, which facilitate the quick insertion of the first connecting ring 161 and the second connecting ring 171 into the hook body. The inner side of the second connecting ring 171 has a hole for connecting an electrical connection wire, so as to achieve stable fixation of the electrical connection wire.

[0053] The wrist arm structure of this invention, in its anti-positioning structure, allows the positioner to withstand greater forces by pulling the contact wire and conductor outwards from the wrist arm support 1. Under the high-frequency, high-intensity vibration environment caused by train operation, the positioner 17 also needs to maintain its stability. During this process, the first hook 106, connected to the first connecting ring 161 on the positioning tube 16, buffers some vibrations, and the positioning tube support 5, by slightly rotating within the positioning support 15 and the wrist arm connector 13, buffers some of the vertical vibrations caused by train operation.

[0054] Therefore, the present invention adopts the above-mentioned anti-positioning contact wire cantilever structure, which is simple in structure, greatly reduces the number of overall connecting structures, and at the same time ensures stable support.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A cantilever structure for a catenary of the counterposition type, characterized in that: The horizontal arm and the inclined arm are connected by the horizontal arm connector, the first support connector is connected to the second support connector of the horizontal arm, the lower end of the first support connector is connected to the horizontal positioning tube, the other side of the positioning tube is connected to the upper part of the positioning support, the lower part of the positioning tube is connected to the lower part of the third support connector, the lower part of the positioning support is connected to the positioning device, the positioning tube support, the positioning tube and the inclined arm form an obtuse triangle, the horizontal arm support, the horizontal arm and the inclined arm form a right triangle, the third support connector is located on the inner side of the positioning support in the vertical direction, the first support connector includes the first connecting seat and the second connecting seat, the upper part of the first connecting seat and the second connecting seat is provided with the first lifting lug connected to the horizontal arm support, the middle part of the first connecting seat and the second connecting seat is provided with the arc-shaped first connecting part, the upper and lower sides of the first connecting part are provided with the first fixing hole, the lower part of the first connecting seat is provided with the first clamping groove corresponding to the second connecting seat, the upper part of the first connecting part is provided with the arc-shaped first protrusion protruding inward, the lower part of the first connecting seat is provided with the first hook body connected to the positioning tube, one side of the positioning tube is provided with the first connecting ring connected to the closed end of the first hook body, the positioning support includes the fifth connecting seat and the sixth connecting seat, the third connecting part of the fifth connecting seat and the sixth connecting seat is provided with the structure-symmetrical connecting leg outward, the upper part of the connecting leg is provided with the third lifting lug connected to the positioning tube support, the upper and lower parts of the third connecting part are provided with the third fixing hole, the size of the connecting leg from top to bottom is gradually reduced, the end of the connecting leg is provided with the second hook body connected to the positioning device, one end of the positioning device is provided with the second connecting ring connected to the closed end of the second hook body, the horizontal arm connector includes the seventh connecting seat and the eighth connecting seat, the upper part of the seventh connecting seat is provided with the heightening column connected to the force cable seat, the lower part of the heightening column is provided with the second clamping groove corresponding to the eighth connecting seat, the inner side of the heightening column is provided with the strip-shaped through hole, the hole in the middle part of the heightening column is penetrated by the stud of the force cable seat, the upper part of the force cable seat is provided with the pressing block, the two sides of the pressing block are provided with the protrusion corresponding to the groove on the two sides of the force cable seat, the inner side of the force cable seat is provided with the double fixing groove connected to the force cable, the second support connector and the third support connector include the third connecting seat and the fourth connecting seat connected on the opposite sides, the upper and lower parts of the second connecting part of the third connecting seat and the fourth connecting seat are provided with the second fixing hole, the lower end of the second connecting part is provided with the second lifting lug, the lower part of the seventh connecting seat and the eighth connecting seat is provided with the double lug connected to the positioning tube support and the inclined arm respectively, the middle part of the double lug is provided with the arc-shaped groove, the upper and lower sides of the fourth connecting part of the seventh connecting seat and the eighth connecting seat are provided with the fourth fixing hole, the middle part of the rod body of the positioning device is a smooth structure protruding upward, the other end of the rod body is provided with the protruding fourth lifting lug connected to the windproof line. ​ ​ ​ ​ ​ ​ ​ 2. The counter-positioned cantenary arm structure according to claim 1, characterized in that: ​ 3. The counterpoised cantilever structure for overhead contact system according to claim 2, characterized in that: ​ 4. The counterpoised cantilever structure for overhead contact system according to claim 3, characterized in that: ​ 5. The counterpoised cantilever structure for overhead contact system according to claim 4, characterized in that: The outer side of the first fixing hole, the second fixing hole, the third fixing hole and the fourth fixing hole is provided with a reinforcing layer, the outer side of the first connecting part, the second connecting part, the third connecting part and the fourth connecting part is provided with a reinforcing rib, and the middle part of the inner side of the through hole is also provided with a reinforcing rib.

6. The counterpoised cantilever structure for overhead contact system according to claim 5, characterized in that: The upper and lower sides of the first connecting ring and the second connecting ring are provided with notches, and the inner side of the second connecting ring is provided with a hole for connecting an electric connecting wire.

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