Multi-gear self-locking support device for railway communication station and use method thereof

Abstract

The application discloses a railway communication station multi-gear self-locking supporting device and a use method. The device comprises a fixed base, a rotating shaft, a support, a limiting block, spring top beads I and spring top beads II. Initially, the support is in a vertical state. When the communication station needs to be placed on a desktop for use, the rotating shaft is pulled outward, the self-locking convex points on the shaft are separated from the self-locking holes, the support is rotated, and the spring top beads are contracted. When reaching the use position, the spring top beads sink into the new grooves of the rotating shaft to press the rotating shaft. The self-locking convex points of the rotating shaft sink into the corresponding self-locking holes, and the spring top beads sink into the positioning grooves, thereby completing the self-locking of the support, supporting the communication station and facilitating work. When the communication station needs to be carried, the above operation is repeated, the support is rotated in the opposite direction, and the initial state is restored, so that the communication station can be carried. The application guarantees the convenience of carrying the communication station and a good screen use angle during the use of the communication station. Meanwhile, the support can be self-locked, thereby guaranteeing the stability of the use of the equipment.

Description

Technical Field

[0001] This invention is designed for the field of railway communication equipment, and specifically relates to a multi-position self-locking support device for railway communication stations and its usage method. Background Technology

[0002] In the field of railway communication equipment, both carrying and supporting functions are required when using and transporting communication equipment. Generally, carrying and supporting are handled by two different components, which increases production costs. Therefore, a dual-purpose support device needs to be designed to meet both the carrying and supporting requirements of the equipment. Furthermore, a self-locking device needs to be added to ensure the stability of the equipment during use. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the present invention provides a multi-position self-locking support device for railway communication stations and a method of use. Self-locking devices are symmetrically arranged at both ends of the support, so that the support device has a lifting function. While realizing self-locking, it also realizes the support function, ensuring the stability of the equipment during use. It is aesthetically pleasing, safe and convenient.

[0004] The technical solution adopted by this invention is as follows: a multi-position self-locking support device for railway communication stations, comprising a fixed base, a rotating shaft, a bracket, a limiting block, a spring ball I, and a spring ball II; the cylindrical rotating shaft passes through the central hole of the bracket, the self-locking protrusion on the inner side of the rotating shaft handle is set in the horizontal self-locking hole, the fixed base is set on the inner side of the end of the bracket, the cylindrical rotating shaft is set in the central circular hole of the fixed base, the square rotating shaft is set in the central square hole of the fixed base, the threaded through hole I on the outer wall of the bracket is aligned with the groove, and the positioning groove on one side of the square rotating shaft is aligned with the threaded through hole II on one side of the central square hole; the spring ball I is set in the threaded through hole I, and the spring ball I of the spring ball I is set in the groove on the surface of the cylindrical rotating shaft; the spring ball II is set in the threaded through hole II on one side of the central square hole of the fixed base, and the spring ball II of the spring ball II is set in the positioning groove on one side of the square rotating shaft; the limiting block is set at the end of the square rotating shaft.

[0005] In the above technical solution, the center of the fixed base includes a central square hole and a central round hole, and a threaded through hole II is provided on one side of the central square hole; the rotating shaft is divided into three parts along the axial direction: a rotating shaft handle, a cylindrical rotating shaft, and a square rotating shaft. A self-locking protrusion is provided on the step on the inner side of the rotating shaft handle, grooves are provided at intervals on the surface of the cylindrical rotating shaft, and a positioning groove is provided on one side of the square rotating shaft; the bracket is a rectangular frame with an open bottom, and the structure at both ends of the bracket is symmetrical. A central hole is provided at each end of the bracket, and several self-locking holes are provided around the central hole. The distribution interval of the self-locking holes is consistent with the distribution interval of the grooves. The self-locking holes and the self-locking protrusions are clearance-fitted. The number of self-locking holes is the number of rotational self-locking stops of the support device, and the angular distribution interval of the self-locking holes is the angular interval between each stop; a threaded through hole I is provided on the outer wall of the bracket, and the center line of the threaded through hole I is flush with the center line of the central hole;

[0006] In the above technical solution, a groove is provided on the outer circle of the rotating shaft handle; two spring top balls I are respectively provided in symmetrical grooves on the surface of the cylindrical rotating shaft, and two spring top balls II are symmetrically provided in positioning grooves on both sides of the square rotating shaft; a semi-circular limiting groove is provided around the self-locking hole, and the starting end of the semi-circular limiting groove corresponds to the self-locking hole at the 90º position; a limiting protrusion is provided on the step on the inner side of the rotating shaft handle, and the radius of the circle where the limiting protrusion is located is perpendicular to the radius of the circle where the self-locking protrusion is located, and the limiting protrusion is located in the semi-circular limiting groove.

[0007] The above technical solution also includes damping block I and damping block II; damping block I is fitted with an overfit in the central circular hole of the fixed base, and damping block II is fitted with an overfit in the blind hole on the inner side of the rotating shaft handle. The cylindrical rotating shaft and the hole II of damping block II and the hole I of damping block I are all clearance fit.

[0008] The above technical solution describes six self-locking holes with an angle interval of 30º. The arc radius of each self-locking hole is 0º, 30º, 60º, 90º, 120º, and 150º, respectively. Correspondingly, the bracket has six positions: 90º, 60º, 30º, 0º, -30º, and -60º.

[0009] The method of using a multi-position self-locking support device for a railway communication station is as follows:

[0010] When the railway communication station needs to be used on the cab: Engage the slot of the shaft handle and pull the shaft outwards, causing the ball II of spring top bead II to disengage from the positioning slot of the shaft. Simultaneously, the self-locking protrusion of the shaft disengages from the self-locking hole of the bracket. The self-locking holes are set at certain intervals, matching the distribution of the grooves on the cylindrical shaft. Rotate the bracket, causing the ball I of spring top bead I to disengage from its original groove on the cylindrical shaft and enter the corresponding groove. The frequency of the collision sound between ball I and the groove determines the number of grooves ball I has passed on the surface of the cylindrical shaft. After adjusting the angle, push the shaft handle inwards, causing the ball II of spring top bead II to press against the positioning slot of the shaft. Simultaneously, the self-locking protrusion of the shaft enters the corresponding self-locking hole of the bracket. The self-locking of the support device is complete. At this time, the bracket of the support device supports the railway communication station at a certain angle on the cab.

[0011] When the communication station needs to be carried after use: Clamp the handle of the rotating shaft into the groove and pull the shaft outwards. The spring ball II will disengage from the positioning groove of the rotating shaft, and the self-locking protrusion of the rotating shaft will disengage from the self-locking hole of the bracket. Rotate the bracket in the opposite direction to disengage the spring ball I from the original cylindrical rotating shaft groove, returning it to its initial state. Then, push the handle of the rotating shaft inwards to engage the spring ball II with the positioning groove of the rotating shaft, and simultaneously allow the self-locking protrusion of the rotating shaft to enter the self-locking hole of the bracket. At this point, the support device is fully self-locking, and the bracket is upright, ready to carry the communication station.

[0012] When the bracket is rotated, the limiting protrusion moves within the limiting groove, and the maximum rotation angle of the bracket is 180º.

[0013] In the above technical solution, when the self-locking protrusion of the rotating shaft enters the self-locking hole of the bracket and the self-locking of the support device is completed, damping block I and damping block II together press down on the bracket.

[0014] In the above technical solution, the bracket can rotate at six positions: 90º, 60º, 30º, 0º, -30º, and -60º.

[0015] The beneficial effects of this invention are that the multi-position self-locking support device can both carry and support, reducing the production and manufacturing cost of the equipment while not only meeting the requirements for convenient carrying and support of communication equipment, but also allowing the driver to adjust the operating angle of the equipment at any time when using it on the dashboard, making it convenient for the driver to operate; the self-locking device can effectively ensure the stability of the equipment and the safety of using the equipment during driving. Attached Figure Description

[0016] Figure 1 This is an isometric view of the structure of the present invention;

[0017] Figure 2 yes Figure 1 Exploded view of section A in the middle;

[0018] Figure 3 yes Figure 1 A diagram illustrating a 60° rotation;

[0019] Figure 4 yes Figure 3 Exploded view of section B in the middle;

[0020] Figure 5 This is an axial cross-sectional view of the initial position of the support end;

[0021] Figure 6 This is a radial cross-sectional view of the initial position of the support end;

[0022] Figure 7 This is a schematic diagram illustrating the operation of the invention when using a communication station;

[0023] Figure 8 This is an axial cross-sectional view of the bracket end when the rotating shaft is pulled out according to the present invention;

[0024] Figure 9 This is an isometric view of the invention after the support has been rotated 60°;

[0025] Figure 10 This is a radial cross-sectional view of the end of the support after it has been rotated 60°.

[0026] Figure 11 This is a schematic diagram illustrating the operation of retracting the support according to the present invention;

[0027] Figure 12 This is an isometric view of the retractable bracket of the present invention. Detailed Implementation

[0028] like Figures 1 to 6 As shown, a multi-position self-locking support device for a railway communication station includes a fixed base 1, a rotating shaft 2, a bracket 3, a limiting block 4, a spring ball I 7, and a spring ball II 8.

[0029] A central part of the fixed base 1 is machined into a central square hole 1-2, and another part is machined into a central round hole 1-4. Mounting holes 1-3 are machined at the four corners of the fixed base 1. In order to better self-locking, threaded through holes II 1-1 are machined on both sides of the central square hole 1-2.

[0030] The rotating shaft 2 is machined axially into three parts: a rotating shaft handle 2-1, a cylindrical rotating shaft 2-2, and a square rotating shaft 2-3. A groove 2-1-3 is milled on the outer circle of the rotating shaft handle 2-1 to facilitate hand gripping. A blind hole 2-1-4 is milled in the center of the inner side of the rotating shaft handle 2-1. A self-locking protrusion 2-1-1 and a limiting protrusion 2-1-2 are machined on the step on the inner side of the rotating shaft handle 2-1. The radius of the circle containing the limiting protrusion 2-1-2 is larger than the radius of the circle containing the self-locking protrusion 2-1-1. The self-locking protrusion 2-1-1 is located in the horizontal direction, and the limiting protrusion 2-1-2 is located in the vertical direction.

[0031] Twelve grooves 2-2-1 are milled at 30º intervals on the surface of the cylindrical shaft 2-2. Positioning grooves 2-3-1 are milled on both sides of the square shaft 2-3 symmetrically. Screw holes are machined at the ends of the square shaft 2-3.

[0032] The bracket 3 is a rectangular frame with an open bottom. The two ends of the bracket 3 are symmetrical. A center hole 3-2 is drilled at each end of the bracket 3. Six self-locking holes 3-4 are machined at 30° intervals around the center hole 3-2. The first self-locking hole 3-4 is located in the horizontal direction. The radius of the arc formed by the six self-locking holes 3-4 is larger than the radius of the cylindrical shaft 2-2. The self-locking holes 3-4 are clearance-fitted with the self-locking protrusions 2-1-1. The number of self-locking holes 3-4 is the number of rotational self-locking stops of the support device. The angular interval between the distribution of the self-locking holes 3-4 and the grooves 2-2-1 is the angular interval between each stop.

[0033] To prevent excessive rotation of bracket 3, a semi-circular arc-shaped limiting groove 3-3 is milled starting from the top of the self-locking hole 3-4 at the 90º position;

[0034] To better fix the rotating shaft 2, two threaded through holes I3-1 are symmetrically machined on the outer side wall of the bracket 3, and the center line of the two threaded through holes I3-1 is flush with the center line of the center hole 3-2;

[0035] To increase damping during rotation, damping block I5 is fitted into the center hole 1-4 of the fixed base 1, and damping block II6 is fitted into the blind hole 2-1-4 on the inner side of the shaft handle. The cylindrical shaft 2-2 of the shaft 2 is fitted with the center hole II6-1 of damping block II6 and the center hole I5-1 of damping block I5.

[0036] The assembled rotating shaft 2 and damping block II 6 are passed through the central hole 3-2 of the bracket 3, so that the limiting protrusion 2-1-2 of the rotating shaft 2 is fitted into the semi-circular limiting groove 3-3 of the bracket 3. Under the control of the limiting protrusion 2-1-2 and the semi-circular limiting groove 3-3, the maximum rotation angle of the bracket 3 is 180°. The self-locking protrusion 2-1-1 of the rotating shaft 2 is fitted into the first self-locking hole 3-4 of the bracket 3, and the cylindrical rotating shaft 2-2 of the rotating shaft 2 is fitted into the central hole 3-2 of the bracket 3.

[0037] Screw the two spring top balls I7 into the two threaded holes 3-1 of the bracket 3 respectively, so that the ball I7-1 of the spring top ball I7 abuts against the grooves 2-2-1 on both sides of the cylindrical axis of rotation; adjust the rotation force of the bracket 3 by adjusting the screwing depth of the spring top ball I7.

[0038] The mounting base 1 of the damping block I5 is installed on the inner side of the end of the bracket 3 in the following manner: the cylindrical shaft 2-2 of the rotating shaft 2 is fitted with clearance through the central hole I5-1 of the damping block I5, and the square shaft 2-3 of the rotating shaft 2 is fitted with clearance through the central square hole 1-2 of the mounting base 1. At the same time, the positioning groove 2-3-1 of the rotating shaft 2 is aligned with the threaded through hole II1-1 of the mounting base 1.

[0039] Screw the two spring balls II8 into the two threaded through holes II1-1 of the fixed base 1 respectively, so that the spring balls II8-1 of the spring balls II8 press against the positioning grooves 2-3-1 on both sides of the square rotating shaft 2-3. Adjust the pulling force of the rotating shaft 2 by adjusting the screwing depth of the spring balls II8.

[0040] The limiting block 4 is installed at the end of the square rotating shaft 2-3 of the rotating shaft 2 with screws. The outer dimensions of the limiting block 4 are larger than the central square hole 1-2 of the fixed base 1 to prevent the rotating shaft 2 from being completely pulled out from the central hole 3-2 of the bracket 3.

[0041] After the installation of both ends of bracket 3 is completed, the multi-position support device is installed. The initial position of the multi-position support device is: the self-locking protrusion 2-1-1 is located in the first self-locking hole 3-4, bracket 3 is upright and can be carried; there are six self-locking holes 3-4, and the arcs of the holes are 0º, 30º, 60º, 90º, 120º and 150º respectively. Correspondingly, bracket 3 has six positions, and the angle of bracket 3 in each position is 90º, 60º, 30º, 0º, -30º and -60º respectively.

[0042] The method of using a multi-position self-locking support device for a railway communication station is as follows:

[0043] When a railway communication station needs to be used on the driver's cab: the support device is fixed to the railway communication station through the screw holes 1-3 at the four corners of the fixed base 1, such as... Figure 7 As shown, hold the slots 2-1-3 on the handles of the rotating shaft at both ends of the bracket with both hands, and pull the rotating shaft 2 to both sides, as shown. Figure 8As shown, the two spring top balls II8-1 disengage from the positioning grooves 2-3-1 on both sides of the square rotating shaft 2-3, and at the same time, the self-locking protrusion 2-1-1 of the rotating shaft 2 disengages from the self-locking hole 3-4 of the bracket 3; the bracket 3 is rotated from the inside to the outside, and the limiting protrusion 2-1-2 of the rotating shaft 2 rotates within the range of the semi-circular limiting groove 3-3 of the bracket 3. The two spring top balls I7-1 disengage from the original groove 2-2-1 of the cylindrical rotating shaft and collide with the cylindrical rotating shaft 2-2 twice. The bracket 3 falls at an angle of 60º, and the spring top balls I7-1 enter the corresponding groove 2-2-1 of the cylindrical rotating shaft, as shown. Figure 9 , Figure 10 As shown, push the rotating shaft handle 2-1 towards the center, so that the ball II8-1 of the two spring top balls II8 press against the positioning grooves 2-3-1 on both sides of the square rotating shaft 2-3. At the same time, the self-locking protrusion 2-1-1 of the rotating shaft 2 extends into the corresponding self-locking hole 3-4 of the bracket 3. At this time, the damping block I5 and the damping block II6 press against the bracket 3 together, and the self-locking of the support device is completed. At this time, the angle of the support device bracket is 30º, and the communication station is supported on the driver's platform for operation.

[0044] When you need to carry the communication device after use: such as Figure 11 As shown, hold the slots 2-1-3 of the rotating shaft handles at both ends of the bracket with both hands, and pull the rotating shaft 2 to both sides, as shown. Figure 8 As shown, the ball II8-1 of the two spring top beads II8 disengages from the positioning grooves 2-3-1 on both sides of the square rotating shaft 2-3, and at the same time, the self-locking protrusion 2-1-1 of the rotating shaft 2 disengages from the self-locking hole 3-4 of the bracket 3; rotating the bracket 3 from the outside to the inside, the limiting protrusion 2-1-2 of the rotating shaft 2 rotates within the range of the semi-circular limiting groove 3-3 of the bracket 3, causing the ball I7-1 of the two spring top beads I7 to disengage from the groove 2-2-1 of the original cylindrical rotating shaft 2-2, and collide with the cylindrical rotating shaft 2-2 twice. The bracket 3 is raised at an angle of 60º, and the ball I7-1 of the spring top beads I7 enters the corresponding groove 2-2-1 of the cylindrical rotating shaft, returning to the initial state; as Figure 12 As shown, push the rotating shaft handle 2-1 inward at this time, so that the ball II8-1 of the two spring top balls II8 press against the positioning grooves 2-3-1 on both sides of the square rotating shaft 2-3. At the same time, the self-locking protrusion 2-1-1 of the rotating shaft 2 enters the self-locking hole 3-4 of the bracket 3. At this time, the damping block I5 and the damping block II6 press the bracket 3 together, the self-locking of the support device is completed, the bracket 3 stands upright, and can carry the equipment.

Claims

1. A multi-position self-locking support device for railway communication stations, characterized in that: The system includes a fixed base (1), a rotating shaft (2), a bracket (3), a limiting block (4), a spring ball I (7), and a spring ball II (8). The cylindrical rotating shaft (2-2) of the rotating shaft (2) passes through the central hole (3-2) of the bracket (3). The self-locking protrusion (2-1-1) on the inner side of the rotating shaft handle is set in the self-locking hole (3-4) in the horizontal direction. The fixed base (1) is set on the inner side of the end of the bracket (3). The cylindrical rotating shaft (2-2) is set in the central circular hole (1-4) of the fixed base (1). The square rotating shaft (2-3) of the rotating shaft (2) is set in the central square hole (1-2) of the fixed base (1). The threaded through hole I (3-1) on the outer wall of the bracket (3) is aligned with the groove (2-2-1). The positioning groove (2-3-1) on one side of the square rotating shaft (2-3) is aligned with the central square hole. The threaded through hole II (1-1) on one side of hole (1-2) is aligned; the spring ball I (7) is set in the threaded through hole I (3-1), and the ball I (7-1) of the spring ball I (7) is set in the groove (2-2-1) on the surface of the cylindrical shaft (2-2); the spring ball II (8) is set in the threaded through hole II (1-1) on one side of the central square hole (1-2) of the fixed base (1), and the ball II (8-1) of the spring ball II (8) is set in the positioning groove (2-3-1) on one side of the square shaft (2-3); the limiting block (4) is set at the end of the square shaft (2-3); the central hole of the fixed base (1) includes a central square hole (1-2) and a central round hole (1-4), and the threaded through hole II (1-1) is set on one side of the central square hole (1-2); The rotating shaft (2) consists of three parts: the rotating shaft handle (2-1), the cylindrical rotating shaft (2-2), and the square rotating shaft (2-3). A self-locking protrusion (2-1-1) is provided on the step on the inner side of the rotating shaft handle (2-1), grooves (2-2-1) are provided at intervals on the surface of the cylindrical rotating shaft (2-2), and a positioning groove (2-3-1) is provided on one side of the square rotating shaft (2-3). The bracket (3) is a rectangular frame with an open bottom. The structure of the bracket (3) is symmetrical at both ends. A central hole (3-2) is provided at each end of the bracket (3). Several self-locking holes (3-4) are provided around the central hole (3-2). The distribution interval of the self-locking holes (3-4) is consistent with the distribution interval of the groove (2-2-1). The self-locking holes (3-4) are clearance-fitted with the self-locking protrusions (2-1-1). The number of self-locking holes (3-4) is the number of rotation self-locking positions of the support device. The angular distribution interval of the self-locking holes (3-4) is the angular interval between each position. A threaded through hole I (3-1) is provided on the outer wall of the bracket (3). The center line of the threaded through hole I (3-1) is flush with the center line of the central hole (3-2).

2. A multi-position self-locking support device for a railway communication station as claimed in claim 1, characterized in that: A slot (2-1-3) is provided on the outer circle of the rotating shaft handle (2-1); two spring top balls I (7) are respectively provided in the symmetrical grooves (2-2-1) on the surface of the cylindrical rotating shaft (2-2), and two spring top balls II (8) are symmetrically provided in the positioning grooves (2-3-1) on both sides of the square rotating shaft (2-3); a semi-circular limiting groove (3-3) is provided on the periphery of the self-locking hole (3-4), and the starting end of the semi-circular limiting groove (3-3) corresponds to the self-locking hole (3-4) at the 90º position; a limiting protrusion (2-1-2) is provided on the step on the inner side of the rotating shaft handle (2-1), and the radius of the circle where the limiting protrusion is located is perpendicular to the radius of the circle where the self-locking protrusion is located, and the limiting protrusion (2-1-2) is located in the semi-circular limiting groove (3-3).

3. A multi-position self-locking support device for a railway communication station as claimed in claim 1, characterized in that: It also includes damping block I (5) and damping block II (6); the damping block I (5) is fitted with a transition fit in the central circular hole (1-4) of the fixed base (1), and the damping block II (6) is fitted with a transition fit in the blind hole (2-1-4) on the inner side of the rotating shaft handle. The cylindrical rotating shaft (2-2) of the rotating shaft (2) and the hole II (6-1) of the damping block II (6) and the hole I (5-1) of the damping block I (5) are all clearance fit.

4. A multi-position self-locking support device for a railway communication station as claimed in claim 1, characterized in that: There are six self-locking holes (3-4) with an angle interval of 30º. The arc of each self-locking hole (3-4) is 0º, 30º, 60º, 90º, 120º, and 150º respectively. Correspondingly, the bracket (3) has six positions, namely 90º, 60º, 30º, 0º, -30º, and -60º.

5. A method of using the multi-position self-locking support device for a railway communication station according to claim 1, characterized in that: Follow these steps: When the railway communication station needs to be used on the cab: Engage the slot (2-1-3) of the shaft handle, pull the shaft (2) outwards, causing the ball II (8-1) of the spring top bead II (8) to disengage from the positioning slot (2-3-1) of the shaft (2), and simultaneously disengage the self-locking protrusion (2-1-1) of the shaft (2) from the self-locking hole (3-4) of the bracket (3); the self-locking holes (3-4) are set at certain intervals, with the same distribution as the groove (2-2-1) of the cylindrical shaft of the shaft (2). Rotate the bracket (3) to cause the ball I (7-1) of the spring top bead I (7) to disengage from the original groove (2-2-1) of the cylindrical shaft and enter the corresponding groove. In the groove (2-2-1), the frequency of the collision sound between the ball I (7-1) and the groove (2-2-1) is used to determine the number of grooves (2-2-1) on the surface of the cylindrical shaft (2-2). After the angle is adjusted, the shaft handle (2-1) of the shaft (2) is pushed inward so that the ball II (8-1) of the spring top ball II (8) presses against the positioning groove (2-3-1) of the shaft (2). At the same time, the self-locking protrusion (2-1-1) of the shaft (2) enters the corresponding self-locking hole (3-4) of the bracket (3). The self-locking of the support device is completed. At this time, the bracket (3) of the support device supports the railway communication station at a certain angle on the dashboard. When the communication station needs to be carried after use: Clamp the slot (2-1-3) of the rotating shaft handle, pull the rotating shaft (2) outwards, and the ball II (8-1) of the spring top ball II (8) will disengage from the positioning slot (2-3-1) of the rotating shaft (2), while the self-locking protrusion (2-1-1) of the rotating shaft (2) will disengage from the self-locking hole (3-4) of the bracket (3); rotate the bracket (3) in the opposite direction to disengage the ball I (7-1) of the spring top ball I (7) from its original position. The cylindrical shaft groove (2-2-1) is restored to its initial state; at this time, the shaft handle (2-1) of the shaft (2) is pushed inward, so that the spring ball II (8-1) of the spring ball II (8) presses against the positioning groove (2-3-1) of the shaft (2), and at the same time, the self-locking protrusion (2-1-1) of the shaft (2) enters the self-locking hole (3-4) of the bracket (3). At this time, the self-locking of the support device is completed, and the bracket (3) is upright and can carry the communication station. When the bracket (3) is rotated, the limiting protrusion (2-1-2) moves within the semi-circular limiting groove (3-3), and the maximum rotation angle of the bracket (3) is 180º.

6. The method of using a multi-position self-locking support device for a railroad communication station of claim 5, wherein: When the self-locking protrusion (2-1-1) of the rotating shaft (2) enters the self-locking hole (3-4) of the bracket (3), the self-locking of the support device is completed, and the damping block I (5) and the damping block II (6) press down on the bracket (3).

7. The method of using a multi-position self-locking support device for a railroad communication station of claim 5, wherein: The bracket (3) can rotate at six positions: 90º, 60º, 30º, 0º, -30º, and -60º.

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