A positive positioning type cantilever structure for overhead line system

Abstract

The application discloses a positive 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, a third support connector on the other side of the positioning tube is connected to the lower part of the arm connector through a positioning tube support, and both sides below a positioning support in the middle of the positioning tube are provided with positioners connected to load-bearing cables; an obtuse triangle is formed among the positioning tube support, the positioning tube and the inclined arm, and a right triangle is formed among the arm support, the horizontal arm and the inclined arm. The arm structure for the catenary has the advantages of simple structure, greatly reduced number of connecting structures and stable support.

Description

Technical Field

[0001] This invention relates to the field of overhead contact line technology, and in particular to a positive 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; 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 between the contact wire and the pantograph. In existing technologies, the cantilever structure is complex and, while ensuring load-bearing strength, cannot achieve rapid installation. Summary of the Invention

[0004] The purpose of this invention is to provide a positive positioning catenary arm structure, which 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 positive positioning contact wire cantilever structure, including a flat cantilever and an inclined cantilever located on a cantilever support. One end of the inclined 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. A third support connector on the other side of the positioning tube is connected to the lower part of the cantilever connector via a positioning tube support. Positioners connected to the catenary are provided on both sides below the positioning support in the middle of the positioning tube.

[0006] The positioning tube support, the positioning tube, and the inclined wrist arm form an obtuse triangle, while the wrist arm support, the flat wrist arm, and the inclined wrist arm form a right triangle.

[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. The middle part of each of them 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. The lower part of the first connecting seat is provided with a first hook body connected to the positioning tube. The upper part of the first connecting part is provided with an inwardly protruding arc-shaped first protrusion. One side of the positioning tube is provided with a first connecting ring connected to the closed end of the first hook body.

[0008] Preferably, the second support connector includes a third connector and a fourth connector connected to opposite sides. The third connector and the fourth connector are provided with second fixing holes above and below them. The lower end of the second connecting part of the third connector and the fourth connector is provided with a second lug for connecting to the wrist arm support.

[0009] Preferably, the third support connector includes a fifth connecting seat and a sixth connecting seat arranged on opposite sides. The third connecting part of the fifth connecting seat and the sixth connecting seat is provided with a third fixing hole on the upper and lower sides. The fifth connecting seat is provided with a third lifting lug connected to the windproof line at the lower part.

[0010] 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 an extension post has a slot corresponding to the eighth connector on its lower part. The extension post has a strip-shaped through hole on its inner side.

[0011] 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.

[0012] 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.

[0013] Preferably, the positioning support includes a ninth connecting seat and a tenth connecting seat. The fifth connecting part of the ninth connecting seat and the tenth connecting seat are respectively provided with outwardly symmetrical connecting legs. The fifth connecting part is provided with a fifth 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 that is connected to the locator. One end of the locator is provided with a second connecting ring that is connected to the closed end of the second hook body.

[0014] 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.

[0015] Preferably, a reinforcing layer is provided on the outer side of the first fixing hole, the second fixing hole, the third fixing hole, the fourth fixing hole, and the fifth fixing hole, and a reinforcing rib is provided on the outer side of the first connecting part, the second connecting part, the third connecting part, the fourth connecting part, and the fifth connecting part, and in the middle of the inner side of the through hole.

[0016] 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.

[0017] Therefore, the present invention adopts the above-mentioned positive 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.

[0018] 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

[0019] Figure 1 This is a schematic diagram of an embodiment of a positive positioning contact wire cantilever structure according to the present invention;

[0020] Figure 2 This is a schematic diagram of the first support connector in a positive positioning contact wire cantilever structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the second support connector in a positive positioning contact wire cantilever structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the third support connector in a positive positioning contact wire cantilever structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the cantilever connector in a positive positioning cantilever structure for a contact network according to the present invention.

[0024] Figure 6 This is a schematic diagram of the positioning support in a positive positioning contact wire cantilever structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the positioner in a positive positioning contact wire cantilever structure of the present invention;

[0026] Figure 8 This is a schematic diagram of a second embodiment of the wrist arm connector in a positive 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;

[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;

[0031] 12. Third support connector; 121. Fifth connector; 122. Sixth connector; 123. Third connecting part; 124. Third fixing hole; 125. Third lifting lug;

[0032] 13. Wrist arm connector; 131. Seventh connector; 132. Eighth connector; 133. Heightening post; 134. Slot; 135. Through hole; 136. Fourth fixing hole; 137. Double ears; 138. Fourth connecting part;

[0033] 14. Cable support; 141. Pressure block; 142. Protrusion;

[0034] 15. Positioning support; 151. Ninth connecting seat; 152. Tenth connecting seat; 153. Fifth connecting part; 154. Connecting leg; 155. Fifth fixing hole; 156. Second hook body;

[0035] 16. Positioning tube; 161. First connecting ring;

[0036] 17. Positioner; 171. Second connecting ring; 172. Fourth lifting lug. Detailed Implementation

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0038] 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.

[0039] As shown in the figure, a positive positioning catenary arm structure includes a flat catenary arm 2 and an oblique catenary arm 3 located on a catenary arm support 1. The catenary arm support 1 provides support for the flat catenary arm 2 and the oblique catenary arm 3. One end of the oblique catenary arm 3 is connected to the flat catenary arm 2 via a catenary arm connector 13, which ensures a stable connection at one end of the oblique catenary arm 3. A first support connector 101 in the middle of the oblique catenary arm 3 is connected to a second support connector 11 of the flat catenary arm 2 via a catenary arm support 4, which ensures a stable connection between the oblique catenary arm 3 and the flat catenary arm 2, thereby guaranteeing stable support for the oblique catenary arm 3 and the flat catenary arm 2.

[0040] 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 third support connector 12 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 the positioning tube 16 and ensuring a stable connection of the double bearing and double guide.

[0041] Positioners 17, connected to the catenary cable, are located on both sides below the positioning support 15 in the middle of the positioning tube 16. The positioning support 15 ensures a stable connection for the positioners 17. An obtuse-angled triangle is formed between the positioning tube support 5, the positioning tube 16, and the inclined cantilever arm 3, ensuring the stability of the positioning tube during high-frequency vibrations caused by passing trains. A right-angled triangle is formed between the cantilever arm support 4, the horizontal cantilever arm 2, and the inclined cantilever arm 3, ensuring the fixed position of the inclined cantilever arm 3 and thus 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 portion 104, enabling a tight connection between the first connecting portions 104 and providing space for fixing the wrist arm support 4. A first hook 106, connected to the positioning tube 16, is located below the first connecting seat 104, achieving the connection between the two. A first connecting ring 161, connected to the closed end of the first hook 106, is located 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 includes 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 above and below, respectively, through which a stable connection between the third connecting seat 111 and the fourth connecting seat 112 is achieved. The lower end of the second connecting portion 113 of the third connecting seat 111 and the fourth connecting seat 112 is provided with a second lug 125 that connects to the arm support 4, thus achieving a stable connection between the arm support 4 and the arm support 4.

[0045] The third support connector 12 includes a fifth connecting seat 121 and a sixth connecting seat 122 arranged on opposite sides. The third connecting portion 123 of both the fifth connecting seat 121 and the sixth connecting seat 122 has a third fixing hole 124 on its upper and lower sides, which enables a stable connection between the fifth connecting seat 121 and the sixth connecting seat 122. Below the fifth connecting seat 121 is a third lifting lug 125 that connects to the windproof wire, thus securing the windproof wire.

[0046] 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.

[0047] 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.

[0048] In addition, the wrist arm connector can also provide Figure 8 The structure shown is identical except for the heightening column.

[0049] Above the seventh connecting seat 131 is a heightening column 133 that connects 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 slot 134 corresponding to the eighth connecting seat 132, which connects to the seventh connecting seat 131, achieving a stable connection. The inner side of the heightening column 133 has a strip-shaped through hole 135, and a reinforcing rib 7 is located in the center of the inner side of the through hole 135, improving the overall load-bearing strength.

[0050] 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.

[0051] The positioning support 15 includes a ninth connecting seat 151 and a tenth connecting seat 152. The fifth connecting portion 153 of both the ninth and tenth connecting seats 151 and 152 are respectively provided with outwardly symmetrical connecting legs 154. The fifth connecting portion 153 has fifth fixing holes 155 at both the top and bottom, which facilitate a stable connection between the ninth and tenth connecting seats 151 and 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 is provided with a second hook 156 that connects to the positioner 17. One end of the positioner 17 is provided with 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.

[0052] 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, the fourth fixing hole 136, and the fifth fixing hole 155 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, the fourth connecting part 138, and the fifth connecting part 153 to further improve their load-bearing strength.

[0053] 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.

[0054] The wrist arm structure of this invention allows the positioner to withstand greater forces by pulling the contact wire and conductor inwards towards 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 third support connector 12 and the wrist arm connector 13, buffers some of the vertical vibrations caused by train operation.

[0055] Therefore, the present invention adopts the above-mentioned positive 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.

[0056] 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 positively positioned overhead contact line, characterized in that: It includes a flat wrist arm and an inclined wrist arm located on a wrist arm support. One end of the inclined wrist arm is connected to the flat wrist arm via a wrist arm connector. A first support connector in the middle part is connected to a second support connector on the flat wrist arm via a wrist arm support. The lower end of the first support connector is connected to a horizontal positioning tube. A third support connector on the other side of the positioning tube is connected to the lower part of the wrist arm connector via a positioning tube support. Positioners connected to the load-bearing cable are provided on both sides below the positioning support in the middle part of the positioning tube. 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. The middle part of each of them 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. The lower part of the first connecting seat is provided with a first hook body connected to the positioning tube. The upper part of the first connecting part is provided with an inwardly protruding arc-shaped first protrusion. One side of the positioning tube is provided with a first connecting ring connected to the closed end of the first hook body. The second support connector includes a third connecting seat and a fourth connecting seat connected to opposite sides. The third connecting seat and the fourth connecting seat are provided with second fixing holes above and below. The lower end of the second connecting part of the third connecting seat and the fourth connecting seat is provided with a second lifting lug for connecting to the wrist arm support. The third support connector includes a fifth connector and a sixth connector arranged on opposite sides. The upper and lower sides of the third connecting part of the fifth connector and the sixth connector are provided with third fixing holes. The lower part of the fifth connector is provided with a third lifting lug that is connected to the windproof line. An obtuse triangle is formed between the positioning tube support, the positioning tube, and the inclined wrist arm, while a right triangle is formed between the wrist arm support, the flat wrist arm, and the inclined wrist arm.

2. The positive positioning contact wire cantilever structure according to claim 1, characterized in that: 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 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. 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.

3. The positive positioning contact wire cantilever structure according to claim 2, characterized in that: 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.

4. The positive positioning contact wire cantilever structure according to claim 3, characterized in that: The positioning support includes a ninth connecting seat and a tenth connecting seat. The fifth connecting part of the ninth connecting seat and the tenth connecting seat are respectively provided with outwardly symmetrical connecting legs. The fifth connecting part is provided with a fifth 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 that is connected to the locator. One end of the locator is provided with a second connecting ring that is connected to the closed end of the second hook body.

5. The positive positioning contact wire cantilever structure according to claim 4, characterized in that: The middle part of the rod of the positioner is a smooth structure that convexes upwards, and the other end of it is provided with a protruding fourth lifting lug that is connected to the windproof line.

6. The positive positioning contact wire cantilever structure according to claim 5, characterized in that: The outer sides of the first fixing hole, the second fixing hole, the third fixing hole, the fourth fixing hole, and the fifth fixing hole are all provided with reinforcing layers. The outer sides of the first connecting part, the second connecting part, the third connecting part, the fourth connecting part, and the fifth connecting part are all provided with reinforcing ribs. The middle part of the inner side of the through hole is also provided with reinforcing ribs.

7. The positive positioning contact wire cantilever structure according to claim 6, characterized in that: 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.

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