An internally engaged anti-slip wrist arm structure for railway contact network

Abstract

The present invention discloses an internally interlocking anti-slipping railway contact network wrist arm structure, comprising a wrist arm support, a wrist arm support, a flat wrist arm, an oblique wrist arm, a positioning tube support, a positioning tube and a positioner, one end of the flat wrist arm and the oblique wrist arm are both connected to the wrist arm support, the flat wrist arm is horizontally connected to the upper side of the wrist arm support, the oblique wrist arm is obliquely arranged on the lower side of the flat wrist arm, the end of the oblique wrist arm away from the wrist arm support is connected to the flat wrist arm through a butterfly-shaped fixed support, the wrist arm support is obliquely arranged between the flat wrist arm and the oblique wrist arm, the upper end of the wrist arm support is connected to the flat wrist arm through a connector 1, and the lower end of the wrist arm support is connected to the oblique wrist arm through a supporter. The present invention adopts an internally interlocking anti-slipping railway contact network wrist arm structure with the above structure, which reduces the use of screws, reduces the problem of frequent contact network failures caused by too many fixing bolts in the prior art, improves the stability of the wrist arm support connection, and thus improves the overall safety of the railway contact network.

Description

Technical Field

[0001] The present invention relates to the technical field of railway contact network equipment, in particular to an inner-engaging anti-slip wrist arm structure for railway contact network. Background Art

[0002] The safe and efficient operation of high-speed electrified railways is crucial to the development of the entire railway network, and the catenary system is the most prone to problems. As a crucial component of the electrified railway power supply system, the performance and condition of the catenary system directly impact the safety and reliability of train operation. The catenary is a special power supply line in the railway system, erected above the railway line and primarily composed of contact suspensions, support devices, positioning devices, arm supports, and auxiliary components.

[0003] The contact suspension includes connecting components such as the contact wire, suspension strings, and load-bearing cables; the supporting device includes a wrist arm structure, insulators, and other necessary connecting parts, which are mainly used to support the contact suspension; the positioning device includes a positioning tube, a positioner, a positioner clamp, and connecting components, which are used to fix the position of the contact wire to ensure that the contact wire is within the operating track of the pantograph slide during train operation, so that the contact wire and pantograph will not be separated. However, in the existing technology, each connecting component is fixed with screws, and there are many fixing bolts. When the train is running, the contact network will vibrate. If the vibration lasts for a long time, the bolts will easily loosen, resulting in instability of the railway contact network and prone to failure. This has a direct impact on the normal operation of railway transportation and brings inconvenience to people's travel. Summary of the Invention

[0004] The purpose of the present invention is to provide an internally interlocking anti-slip wrist arm structure for railway contact network, which reduces the use of screws, reduces the problem of frequent contact network failures caused by the large number of fixing bolts in the prior art, improves the stability of the wrist arm support connection, and thus improves the overall safety of the railway contact network.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an inner-engaging anti-slip type railway contact network wrist arm structure, comprising a wrist arm support, a wrist arm support, a flat wrist arm, an oblique wrist arm, a positioning tube support, a positioning tube and a positioner, one end of the flat wrist arm and the oblique wrist arm are connected to the wrist arm support, the flat wrist arm is horizontally connected to the upper side of the wrist arm support, the oblique wrist arm is obliquely arranged on the lower side of the flat wrist arm, the end of the oblique wrist arm away from the wrist arm support is connected to the flat wrist arm through a butterfly-shaped fixed support, the wrist arm support is obliquely arranged between the flat wrist arm and the oblique wrist arm, and the upper end of the wrist arm support is connected to the flat wrist arm through a butterfly-shaped fixed support. The end is connected to the flat wrist arm through connector 1, the lower end of the wrist arm support is connected to the oblique wrist arm through the support, the positioning tube is horizontally arranged on the lower side of the oblique wrist arm, one end of the positioning tube is connected to the hook 1 of the support, the positioner is arranged on the lower side of the positioning tube, one end of the positioner is connected to the middle part of the positioning tube through the positioning hook, the positioning tube support is arranged between the flat wrist arm and the positioning tube, the upper end of the positioning tube support is connected to the butterfly fixed support, the lower end of the positioning tube support is connected to the positioning hook or the lower end of the positioning tube support is connected to the positioning tube through connector 2;

[0006] The butterfly-shaped fixed support, the first connector, the support, the positioning hook and the second connector all include an inner bite-type connection structure.

[0007] Preferably, the internal interlocking connection structure includes a symmetrically connected clamp 1 and a clamp 2, a receiving plate is provided at one end of the clamp 1, an inserting hole is provided on the receiving plate, a plug-in protrusion is provided on the clamp 2 and plug-in connected to the inserting hole, an interlocking groove 1 is provided on the upper side of the inserting hole, and an interlocking protrusion 1 is provided on the plug-in protrusion and is clamped connected to the interlocking groove 1.

[0008] Preferably, a second bite groove is provided on one side of the first bite protrusion, a second bite protrusion is provided between the first bite groove and the insertion hole, and the second bite protrusion is snap-connected to the second bite groove.

[0009] Preferably, the clamp 1 and the clamp 2 of the butterfly-shaped fixed support are wrapped and connected to the tail end of the flat wrist arm, the upper side of the clamp 1 of the butterfly-shaped fixed support is connected to the plug column through the receiving plate, the upper side of the plug column is provided with a fixed seat, the upper side of the fixed seat is connected to a pressure plate, a clamping groove is provided between the fixed seat and the pressure plate, and the lower sides of the clamp 1 and the clamp 2 of the butterfly-shaped fixed support are provided with connecting ears, one side of the connecting ears is connected to the oblique wrist arm, and the other side of the connecting ears is connected to the upper end of the positioning tube support.

[0010] Preferably, the clamp 1 and the clamp 2 of the connector 1 are wrapped around and connected to one end of the flat arm close to the arm support, and the lower sides of the clamp 1 and the clamp 2 of the connector 1 are provided with a connecting plate 1, and three connecting holes 1 distributed in a triangle are provided on the connecting plate 1, and the connecting plate 1 is connected to the upper end of the arm support.

[0011] Preferably, the clamp 1 and the clamp 2 of the support are wrapped and connected to the middle part of the oblique wrist arm, and the lower side of the clamp of the support is connected to the hook 1 through the receiving plate. The upper side of the clamp 1 and the clamp 2 of the support is provided with a connecting plate 2, and three connecting holes 2 distributed in a triangular shape are provided on the connecting plate 2. The connecting plate 2 is connected to the lower end of the wrist arm support.

[0012] Preferably, the clamp 1 and the clamp 2 of the connector 2 are wrapped and connected to the tail end of the positioning tube, and the upper sides of the clamp 1 and the clamp 2 of the connector 1 are provided with a connecting plate 3, and the connecting plate 3 is provided with two vertically distributed connecting holes 3, and the connecting plate 3 is connected to the lower end of the positioning tube support.

[0013] Preferably, the positioning hook includes a single positioning hook and a double positioning hook.

[0014] Preferably, the clamp 1 and the clamp 2 of the positioning single hook are wrapped and connected to the middle part of the positioning tube, and the lower side of the clamp of the positioning single hook is connected to the vertically arranged connecting plate 4 through a receiving plate, and a weight-reducing groove 1 is provided on both sides of the connecting plate 4, and a hook 2 is provided at the bottom of the connecting plate 4, and the hook 2 is connected to one end of the locator, and a connecting plate 5 is provided on the upper side of the clamp 1 and the clamp 2 of the positioning single hook, and the two connecting plates 5 are connected by bolts or the two connecting plates 5 are connected to the lower end of the positioning tube support by bolts.

[0015] Preferably, the first and second clamps of the double-hook positioning hooks are both wrapped around and connected to the middle of the positioning tube. A connecting plate six is ​​provided on the upper side of the first and second clamps of the double-hook positioning hooks. The two connecting plates six are connected by bolts or the two connecting plates six are connected to the lower end of the positioning tube support by bolts. The lower side of the clamp of the double-hook positioning hook is connected to the horizontally arranged connecting fin one through a receiving plate. One side of the connecting fin one is connected to the horizontally arranged connecting fin two. Both sides of the connecting fin one and the connecting fin two are provided with a weight-reducing groove two, which reduces the weight of the double-hook positioning hook and saves materials. The tail ends of the connecting fin one and the connecting fin two are connected to the vertically arranged hook three through an adapter plate.

[0016] Therefore, the present invention adopts an internally interlocking anti-slip wrist arm structure for railway contact network of the above structure, wherein the flat wrist arm, the oblique wrist arm and the positioning tube support are connected by a butterfly-shaped fixed support, the flat wrist arm and the wrist arm support are connected by connector 1, the wrist arm support, the oblique wrist arm and the positioning tube are connected by a support, the positioning tube and the positioner are connected by a positioning hook, the positioning tube support and the positioning tube are connected by a positioning hook or connector 2, the butterfly-shaped fixed support, connector 1, support, positioning hook and connector 2 all include an internally interlocking connection structure, and each connecting part is connected by an internally interlocking connection, thereby reducing the use of screws by half, reducing the occurrence of railway contact network failures caused by loose screws, greatly improving the stability of the connection between the positioning tube and the positioning tube support, and improving the safety of the product.

[0017] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a single-support, single-guide positioning type wrist arm structure for an internally engaged, anti-slip type railway contact network according to the present invention;

[0019] Figure 2 This is a schematic diagram of a single-bearing, single-guide, reverse-positioning wrist arm structure for an internally engaged, anti-slip railway contact network according to the present invention;

[0020] Figure 3 This is a schematic diagram of a double-bearing and double-guiding positioning type wrist-arm structure for an inner-engaging anti-slip railway contact network according to the present invention;

[0021] Figure 4 It is a schematic diagram of a double-bearing, double-guide, reverse-positioning wrist-arm structure for an inner-engaging, anti-slip type railway contact network according to the present invention;

[0022] Figure 5 It is a schematic diagram of a butterfly-shaped fixed support with an inner-engaging anti-slip type wrist-arm structure for railway contact network according to the present invention;

[0023] Figure 6 This is a schematic diagram of a butterfly-shaped fixed support clamp of an inner-engaging anti-slip type wrist-arm structure for a railway contact network according to the present invention;

[0024] Figure 7 This is a schematic diagram of a second butterfly-shaped fixed support clamp of an inner-engaging anti-slip type wrist-arm structure for a railway contact network according to the present invention;

[0025] Figure 8 This is a schematic diagram of an inner-engaging, anti-slip type wrist-arm structure connector for railway contact network according to the present invention;

[0026] Figure 9 This is a schematic diagram of an internally engaged, anti-slip type arm structure support for a railway contact network according to the present invention;

[0027] Figure 10 This is a schematic diagram of a second internally engaged, anti-slip type wrist-arm structure connector for a railway contact network according to the present invention;

[0028] Figure 11 This is a schematic diagram of a single hook positioned by a wrist arm structure for an inner-engaging, anti-slip type railway contact network according to the present invention;

[0029] Figure 12 The present invention is a schematic diagram of a double hook positioning arm structure for an inner-engaging anti-slip railway contact network.

[0030] Reference numerals:

[0031] 1. Cantilever support; 2. Cantilever support; 3. Flat cantilever; 4. Oblique cantilever; 5. Positioning tube support; 6. Positioning tube; 7. Positioner;

[0032] 8. Butterfly-shaped fixed support; 81. Insertion column; 82. Fixed seat; 83. Pressing plate; 84. Clamping groove; 85. Connecting ears;

[0033] 9. Connector 1; 91. Connecting plate 1; 92. Connecting hole 1;

[0034] 10. Support; 101. Hook 1; 102. Connecting plate 2; 103. Connecting hole 2;

[0035] 11. Connector 2; 111. Connecting plate 3; 112. Connecting hole 3;

[0036] 12. Positioning single hook; 121. Connecting plate four; 122. Weight reduction slot one; 123. Hook two; 124. Connecting plate five;

[0037] 13. Positioning double hook; 131. Connecting plate six; 132. Connecting fin one; 133. Connecting fin two; 134. Hook three;

[0038] 14. Internal interlocking connection structure; 141. Clamp 1; 142. Clamp 2; 143. Socket plate; 144. Insert hole; 145. Insert protrusion; 146. Interlocking groove 1; 147. Interlocking protrusion 1; 148. Interlocking groove 2; 149. Interlocking protrusion 2. DETAILED DESCRIPTION

[0039] The technical solution of the positioning invention is further described below through the accompanying drawings and embodiments.

[0040] Unless otherwise defined, the technical or scientific terms used in this positioning invention shall have the usual meanings understood by persons of ordinary skill in the field to which this positioning invention belongs. The words "first", "second" and similar terms used in this positioning invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0041] Example

[0042] See also Figures 1 to 12As shown in the figure, the present invention provides an internally interlocking anti-slip cantilever structure for railway contact network, comprising a cantilever support 1, a cantilever support 2, a flat cantilever 3, an oblique cantilever 4, a positioning tube support 5, a positioning tube 6, and a positioner 7. One end of the flat cantilever 3 and the oblique cantilever 4 are both connected to the cantilever support 1. The flat cantilever 3 is horizontally connected to the upper side of the cantilever support 1, and the oblique cantilever 4 is tilted and arranged at the lower side of the flat cantilever 3. The end of the oblique cantilever 4 away from the cantilever support 1 is connected to the flat cantilever 3 via a butterfly-shaped fixed support 8. The butterfly-shaped fixed support 8 realizes a stable connection between the oblique cantilever 4 and the flat cantilever 3. The cantilever support 2 is tilted and arranged between the flat cantilever 3 and the oblique cantilever 4. The upper end of the cantilever support 2 is connected to the flat cantilever 3 via a connector 9, and the lower end of the cantilever support 2 is connected to the oblique cantilever 4 via a support 10, realizing a stable connection between the cantilever support 2 and the flat cantilever 3 and the oblique cantilever 4. A right triangle is formed between the flat wrist arm 3, the wrist arm support 2 and the oblique wrist arm 4, and the wrist arm support 2 ensures that the positions of the flat wrist arm 3 and the oblique wrist arm 4 are stable.

[0043] The positioning tube 6 is horizontally arranged on the lower side of the oblique arm 4, one end of the positioning tube 6 is connected to the hook 101 of the support 10, the positioner 7 is arranged on the lower side of the positioning tube 6, one end of the positioner 7 is connected to the middle part of the positioning tube 6 through the positioning hook, the positioning tube support 5 is arranged between the flat arm 3 and the positioning tube 6, the upper end of the positioning tube support 5 is connected to the butterfly-shaped fixed support 8, the lower end of the positioning tube support 5 is connected to the positioning hook or the lower end of the positioning tube support 5 is connected to the positioning tube 6 through the connector 2 11.

[0044] When the lower end of the positioning tube support 5 is connected to the positioning hook, the contact line is pulled away from the arm support 1 through the positioning tube 6 and the positioner 7, that is, the positioning method is called reverse positioning, and an obtuse triangle is formed between the oblique arm 4, the positioning tube support 5 and the positioning tube 6. When the lower end of the positioning tube support 5 is connected to the positioning tube 6 through the connector 2 11, the contact line is pulled toward the arm support 1 through the positioning tube 6 and the positioner 7, that is, the positioning method is called reverse positioning, and a right triangle is formed between the oblique arm 4, the positioning tube support 5 and the positioning tube 6. The setting of its triangular structure ensures a stable connection.

[0045] The butterfly-shaped fixing support 8, connector 1 9, support 10, positioning hook, and connector 2 11 all include an internal interlocking connection structure 14, which comprises a symmetrically connected clamp 1 141 and clamp 2 142. One end of clamp 1 141 is provided with a receiving plate 143, which is provided with a through hole 144. Clamp 2 142 is provided with a plugging protrusion 145 that plugs into through hole 144. A first interlocking groove 146 is provided above through hole 144, and a first interlocking protrusion 147 is provided on the plugging protrusion 145 to engage with the first interlocking groove 146. One side of the first interlocking protrusion 147 is provided with a second interlocking groove 148. A second interlocking protrusion 149 is provided between the first interlocking groove 146 and the through hole 144. The second interlocking protrusion 149 engages with the second interlocking groove 148.

[0046] Inserting protrusion 145 is inserted into insertion hole 144, and is engaged with snap-fit ​​protrusion 147 and snap-fit ​​groove 146, and snap-fit ​​protrusion 149 and snap-fit ​​groove 148, thereby achieving an internal snap-fit ​​connection between clamp 141 and clamp 2, 142. This reduces the number of screws used by half, and the double snap-fit ​​connection ensures the stability of the connection between clamp 141 and clamp 2, 142. The internal snap-fit ​​connection reduces the number of screws used by half, thereby reducing the occurrence of railway contact network failures caused by loose screws, greatly improving the stability of the connection between positioning tube 6 and positioning tube support 5, and enhancing product safety.

[0047] The clamp 141 and the clamp 2 142 of the butterfly-shaped fixed support 8 are covered and connected to the tail end of the flat wrist arm 3. The upper side of the clamp 141 of the butterfly-shaped fixed support 8 is connected to the plug column 81 through the receiving plate 143. The upper side of the plug column 81 is provided with a fixing seat 82. The upper side of the fixing seat 82 is connected with a pressure plate 83. A clamping groove 84 is provided between the fixing seat 82 and the pressure plate 83. The lower sides of the clamp 141 and the clamp 2 142 of the butterfly-shaped fixed support 8 are provided with connecting ears 85. One side of the connecting ears 85 is connected to the oblique wrist arm 4, and the other side of the connecting ears 85 is connected to the upper end of the positioning tube support 5, so that the positioning tube support 5 and the oblique wrist arm 4 are connected to the oblique wrist arm 4 together, reducing the use of connecting parts and improving the stability at the connection position.

[0048] Connector 1-9's clamping ring 141 and clamping ring 2 142 wrap around and connect to the end of the flat wrist arm 3 near the wrist support 1. Connector 1-9's clamping ring 141 and clamping ring 2 142 are each provided with a connecting plate 141 on their undersides. This connecting plate 141 has three triangularly arranged connecting holes 142, which connect to the upper end of the wrist support 2. Connector 1-9 is securely connected to the flat wrist arm 3, and the wrist support 2 is securely connected to connector 1-9, thus achieving a stable connection between the wrist support 2 and the flat wrist arm 3.

[0049] The first clamp 141 and the second clamp 142 of the support 10 are wrapped around and connected to the middle part of the oblique wrist arm 4. The lower side of the first clamp 141 of the support 10 is connected to the first hook 101 through the receiving plate 143. The upper sides of the first clamp 141 and the second clamp 142 of the support 10 are both provided with a connecting plate 2 102. The connecting plate 2 102 is provided with three connecting holes 2 103 distributed in a triangle. The connecting plate 2 102 is connected to the lower end of the wrist arm support 2. The support 10 is firmly connected to the oblique wrist arm 4, the wrist arm support 2 is stably connected to the connecting plate 2 102 of the support 10, and the positioning tube 6 is stably connected to the hook 101 of the support 10, which is convenient for quick installation and easy operation. At the same time, it improves the stable connection between the wrist arm support 2, the positioning tube 6 and the oblique wrist arm 4, and improves the overall safety of the contact network.

[0050] The first clamp 141 and the second clamp 142 of the second connector 11 wrap around and connect to the tail end of the positioning tube 6. The upper sides of the first clamp 141 and the second clamp 142 of the first connector 9 are both provided with a connecting plate 3 111. The connecting plate 3 111 is provided with two vertically distributed connecting holes 3 112. The connecting plate 3 111 is connected to the lower end of the positioning tube support 5. When the arm structure is positioned in the positive positioning mode, the lower end of the positioning tube support 5 is connected to the positioning tube 6 through the second connector 11. The clamp structure of the second connector 11 is firmly connected to the positioning tube 6, and the positioning tube support 5 is firmly connected to the connecting plate 3 111 of the second connector 11, thereby achieving a stable connection between the positioning tube support 5 and the positioning tube 6.

[0051] The positioning hook includes a single positioning hook 12 and a double positioning hook 13. The clamp 1 141 and the clamp 2 142 of the single positioning hook 12 are wrapped and connected to the middle part of the positioning tube 6. The lower side of the clamp 141 of the single positioning hook 12 is connected to the vertically arranged connecting plate 4 121 through the receiving plate 143. Both sides of the connecting plate 4 121 are provided with a weight reduction groove 122, which reduces the weight of the double positioning hook 13 while saving materials. The bottom of the connecting plate 4 121 is provided with a hook 2 123, which is connected to one end of the positioner 7. The upper sides of the clamp 1 141 and the clamp 2 142 of the single positioning hook 12 are provided with a connecting plate 5 124. The two connecting plates 5 124 are connected by bolts or the two connecting plates 5 124 are connected to the lower end of the positioning tube support 5 by bolts.

[0052] The clamp 1 141 and the clamp 2 142 of the positioning double hook 13 are both covered and connected to the middle part of the positioning tube 6. The upper sides of the clamp 1 141 and the clamp 2 142 of the positioning double hook 13 are both provided with a connecting plate 6 131. The two connecting plates 6 131 are connected by bolts or the two connecting plates 6 131 are connected to the lower end of the positioning tube support 5 by bolts. The lower side of the clamp 141 of the positioning double hook 13 is connected to the horizontally arranged connecting fin 1 132 through the receiving plate 143. The connecting fin 132, the receiving plate 143 and the clamp 1 141 are an integrated structure. One side of the connecting fin 132 is connected to the horizontally arranged connecting fin 2 133. The connecting fin 2 133 and the clamp 2 142 are separately arranged, providing flexibility for the positioning double hook 13, facilitating the replacement of connecting fin 2 133 of different models, thereby facilitating the adjustment of the installation position of the locator 7. Both sides of the connecting wing 1 132 and the connecting wing 2 133 are provided with a weight-reducing groove 2, and the tail ends of the connecting wing 1 132 and the connecting wing 2 133 are connected with a vertically arranged hook 3 134 through an adapter plate.

[0053] The locator 7 is connected to the lower side of the positioning tube 6 through the positioning hook. When the positioning hook is a single positioning hook 12, one locator 7 is connected to the lower side of the positioning tube 6, that is, a single-bearing and single-guide cantilever support 2. When the positioning hook is a double positioning hook 13, two locators 7 are connected to the lower side of the positioning tube 6, that is, a double-bearing and double-guide cantilever support 2.

[0054] Therefore, the present invention adopts an internally interlocking anti-slip wrist arm structure for railway contact network with the above-mentioned structure, in which the flat wrist arm, the oblique wrist arm and the positioning tube support are connected by a butterfly-shaped fixed support, the flat wrist arm and the wrist arm support are connected by connector 1, the wrist arm support, the oblique wrist arm and the positioning tube are connected by a support, the positioning tube and the positioner are connected by a positioning hook, and the positioning tube support and the positioning tube are connected by a positioning hook or connector 2. The butterfly-shaped fixed support, connector 1, support, positioning hook and connector 2 all include an internally interlocking connection structure. Through the internally interlocking connection, the use of screws is reduced by half, and the occurrence of railway contact network failures caused by loose screws is reduced, the stability of the connection between the positioning tube and the positioning tube support is greatly improved, and the safety of the product is improved.

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

Claims

1. An internally engaged, anti-slip rail contact network arm structure, characterized by: The cam is connected to the support frame of the lifting arm through the support frame, and the support frame is fixed with the support frame to the support frame, and the support frame is fixed with the support frame to the support frame. The butterfly-shaped fixed support, connector 1, support, positioning hook and connector 2 all include an internal interlocking connection structure; the internal interlocking connection structure includes a symmetrically connected clamp 1 and clamp 2, one end of the clamp 1 is provided with a receiving plate, the receiving plate is provided with an insertion hole, the clamp 2 is provided with a plugging protrusion that is plug-connected to the insertion hole, the upper side of the insertion hole is provided with an interlocking groove 1, and the plugging protrusion is provided with an interlocking protrusion that is snap-connected to the interlocking groove 1; A second bite groove is provided on one side of the first bite protrusion, and a second bite protrusion is provided between the first bite groove and the insertion hole, and the second bite protrusion is connected to the second bite groove by a snap connection; The clamps 1 and 2 of the butterfly-shaped fixed support are wrapped around and connected to the tail end of the flat wrist arm. The upper side of the clamp 1 of the butterfly-shaped fixed support is connected to the plug column through a receiving plate. A fixed seat is provided on the upper side of the plug column. A pressure plate is connected to the upper side of the fixed seat. The lower sides of the clamps 1 and 2 of the butterfly-shaped fixed support are provided with connecting ears. One side of the connecting ears is connected to the oblique wrist arm, and the other side of the connecting ears is connected to the upper end of the positioning tube support.

2. The inner-engaging anti-slip rail contact network arm structure according to claim 1, characterized in that: The clamp 1 and the clamp 2 of the connector 1 are wrapped around and connected to one end of the flat wrist arm close to the wrist arm support. The lower sides of the clamp 1 and the clamp 2 of the connector 1 are provided with a connecting plate 1, and three connecting holes 1 distributed in a triangle are provided on the connecting plate 1. The connecting plate 1 is connected to the upper end of the wrist arm support.

3. The inner-engaging anti-slip rail contact network arm structure according to claim 2, characterized in that: The support's clamp 1 and clamp 2 are wrapped around the middle of the oblique wrist arm, and the lower side of the support's clamp is connected to the hook 1 through a receiving plate. The upper sides of the support's clamp 1 and clamp 2 are both provided with a connecting plate 2, and the connecting plate 2 is provided with three connecting holes 2 distributed in a triangle. The connecting plate 2 is connected to the lower end of the wrist arm support.

4. The inner-engaging anti-slip rail contact network arm structure according to claim 3, characterized in that: The clamp 1 and clamp 2 of connector 2 are wrapped and connected to the tail end of the positioning tube. The upper sides of the clamp 1 and clamp 2 of connector 2 are provided with a connecting plate 3, and two vertically distributed connecting holes 3 are provided on the connecting plate 3. The connecting plate 3 is connected to the lower end of the positioning tube support.

5. The inner-engaging anti-slip railroad contact network arm structure according to claim 4, characterized in that: Positioning hooks include single positioning hooks and double positioning hooks.

6. The inner-engaging anti-slip railroad overhead contact network arm structure according to claim 5, characterized in that: The clamp 1 and clamp 2 of the positioning single hook are wrapped and connected to the middle part of the positioning tube. The lower side of the clamp of the positioning single hook is connected to the vertically arranged connecting plate 4 through a receiving plate. Both sides of the connecting plate 4 are provided with a weight reduction groove 1. The bottom of the connecting plate 4 is provided with a hook 2, and the hook 2 is connected to one end of the locator. The upper side of the clamp 1 and clamp 2 of the positioning single hook is provided with a connecting plate 5. The two connecting plates 5 are connected by bolts or the two connecting plates 5 are connected to the lower end of the positioning tube support by bolts.

7. The inner-engaging anti-slip railroad overhead contact network arm structure according to claim 6, characterized in that: The clamp 1 and the clamp 2 of the positioning double hook are both covered and connected to the middle part of the positioning tube. A connecting plate 6 is provided on the upper side of the clamp 1 and the clamp 2 of the positioning double hook. The two connecting plates 6 are connected by bolts or the two connecting plates 6 are connected to the lower end of the positioning tube support by bolts. The lower side of the clamp of the positioning double hook is connected to the horizontally arranged connecting fin 1 through a receiving plate, and one side of the connecting fin 1 is connected to the horizontally arranged connecting fin 2. Both sides of the connecting fin 1 and the connecting fin 2 are provided with a weight reduction groove 2, and the tail ends of the connecting fin 1 and the connecting fin 2 are connected to the vertically arranged hook 3 through an adapter plate.

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