Adjustable railway section communication equipment

Abstract

The invention discloses an adjustable railway section communication device, which belongs to the technical field of communication device installation, and comprises a main pressing plate used for being connected with a communication box; the auxiliary pressing plate is connected with the main pressing plate, and the main pressing plate and the auxiliary pressing plate are each of a semicircular structure and can be connected to the outer side of a telegraph pole in a sleeving mode; the pressing wheel is elastically connected to the outer sides of the main pressing plate and the auxiliary pressing plate, and the communication box can be kept stable relative to the telegraph pole through friction force between the pressing wheel and the telegraph pole; according to the communication box, by arranging the split type walking assemblies, the walking wheels arranged on the outer sides of the studs in a sleeving mode can make close contact with the outer circumferential face of the telegraph pole, in the climbing process of the communication box, contact between the walking wheels and the telegraph pole can be kept stable, and in the separation process of the two walking wheels, the walking wheels and the outer wall of the telegraph pole can be easily disengaged from contact; therefore, a space is provided for the main pressing plate and the auxiliary pressing plate to be completely attached to the outer side of the telegraph pole, and the communication box is stably installed on the telegraph pole.

Description

Technical Field

[0001] The present invention relates to the technical field of communication equipment installation, and in particular to an adjustable railway section communication equipment. Background Art

[0002] Railway section communication equipment is a communication device with parameter adjustment function designed specifically for railway sections (i.e. the railway line area between two stations). It is mainly used to ensure the transmission of information between trains and the ground, and between trains within the railway section, ensuring the safety and efficiency of railway transportation.

[0003] At present, communication equipment is mostly installed on utility poles on both sides of the railway. When encountering obstacles, the position of the communication box needs to be raised to ensure that the signal covers the entire track area and avoid signal blind spots caused by terrain obstruction. During the specific installation process, workers often have to work at heights and connect the communication equipment to the utility poles through clamps, making the overall installation more inconvenient.

[0004] Therefore, it is necessary to provide an adjustable railway section communication equipment to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an adjustable railway section communication device to solve the problem in the above background technology that the existing communication equipment requires workers to climb up and connect it to the telephone pole through a clamp, making the overall installation more inconvenient.

[0006] Based on the above ideas, the present invention provides the following technical solutions: an adjustable railway section communication device, comprising: Main pressure plate, used to connect with the communication box; A secondary pressure plate connected to the main pressure plate, both the main pressure plate and the secondary pressure plate are semicircular in structure and can be sleeved on the outside of the electric pole; The pressure wheel is elastically connected to the outer sides of the main pressure plate and the auxiliary pressure plate, and the friction between the pressure wheel and the pole can keep the communication box stable relative to the pole; A rotating shaft is rotatably connected to the communication box, with studs arranged on both the upper and lower sides of the rotating shaft, and the rotating shaft can drive the studs to rotate synchronously; The split traveling assembly is installed on the stud and can rotate synchronously with the stud. When the stud drives the split traveling assembly to rotate forward, the communication box can move upward along the electric pole. When the rotating shaft drives the stud to rotate reversely, the split traveling assembly located on the stud is in a separated state, so that the main pressure plate and the auxiliary pressure plate have space to fit with the electric pole.

[0007] As a further solution of the present invention: both ends of the main pressure plate and the auxiliary pressure plate extend outward to form connecting ear plates, and the outer side surfaces of the connecting ear plates are fixedly provided with screw sleeves, and the connecting columns located at the connecting ear plates pass through the two screw sleeves and engage with their threads. During the rotation of the connecting columns, the main pressure plate and the auxiliary pressure plate can be pushed closer to or away from each other, and the rotating shaft and the connecting columns are in transmission cooperation.

[0008] As a further solution of the present invention: the split walking assembly includes two walking wheels sleeved on the stud, and a sleeve is fixedly provided on the outer end surface of the walking wheel. The sleeve is sleeved on the outside of the stud and is threadedly connected to the stud. During the rotation of the stud, the two walking wheels can approach or move away from each other.

[0009] As a further solution of the present invention: a plurality of groups of limiting grooves are evenly provided on the outer circumferential surface of the sleeve, a limiting plate is fixedly provided on the communication box, the sleeve passes through a preset through hole on the limiting plate, a limiting block matching the limiting groove is elastically connected to the inner wall of the through hole, and an inclined surface is provided on one end of the limiting block extending to the outside of the limiting plate.

[0010] As a further solution of the present invention: an end of the rotating shaft close to the connecting column is provided with a driving bevel gear through a one-way bearing sleeve, and an outer side of the connecting column is provided with a driven bevel gear meshing with the driving bevel gear.

[0011] As a further solution of the present invention: a guide frame is fixedly provided on the outer side of the auxiliary pressure plate and the main pressure plate, a slider is elastically connected in the guide frame, and the connecting shaft at the end of the pressure wheel rotates with the slider through a first one-way bearing.

[0012] As a further solution of the present invention: the main pressure plate and the communication box are connected via a fixing rod.

[0013] As a further solution of the present invention: both the main pressure plate and the auxiliary pressure plate are provided with through slots for the pressure wheels to pass through.

[0014] As a further solution of the present invention: two sections of first external threads with opposite thread directions are provided on the outer surface of the connecting column and located at the positions of the two screw sleeves.

[0015] As a further solution of the present invention: two sections of second external threads with opposite thread directions are provided on the outer circumferential surface of the stud at the positions of the two sleeves.

[0016] Compared with the prior art, the beneficial effects of the present invention are: through the provision of a split walking assembly, the walking wheels mounted on the outside of the stud can be in close contact with the outer circumferential surface of the utility pole, and during the climbing process of the communication box, the contact between the walking wheels and the utility pole can remain stable, and during the separation of the two walking wheels, the walking wheels can easily disengage from the outer wall of the utility pole, thereby providing space for the main pressure plate and the auxiliary pressure plate to fully fit the outside of the utility pole, so that the communication box can be stably installed on the utility pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the coordination of the main pressure plate and the auxiliary pressure plate of the present invention; Figure 3 It is a schematic diagram of the cooperation between the rotating shaft and the stud of the present invention; Figure 4 It is a structural schematic diagram of the split walking assembly of the present invention; Figure 5 This is a schematic diagram of the two sets of running wheels of the present invention after being separated; Figure 6 This is a schematic diagram of the cooperation between the rotating shaft and the active bevel gear of the present invention; Figure 7 This invention Figure 4 A schematic diagram of the enlarged structure of part A; Figure 8 This is a schematic diagram of the cooperation between the protrusion and the strip groove of the present invention; Figure 9 This is a schematic diagram of two sets of running wheels of the present invention when they are fitted together; In the figure: 1. Electric pole; 2. Communication box; 201. Fixed rod; 3. Travel wheel; 301. Casing; 3011. Limiting groove; 302. Arc surface; 4. Connecting column; 401. Strip groove; 5. Main pressure plate; 6. Auxiliary pressure plate; 7. Screw sleeve; 8. Slider; 9. Guide frame; 10. Stud; 11. Pressure wheel; 12. Limiting spring; 13. Driven bevel gear; 1301. Bump; 14. Annular seat; 15. Transmission unit; 16. Limiting plate; 17. Mounting seat; 18. Connecting rod; 19. Pressure rod; 1901. Bump; 1902. Conical surface; 20. Active bevel gear; 2001. Slot; 21. Telescopic rod; 22. Rotating shaft; 23. Limiting block; 2301. Inclined surface. DETAILED DESCRIPTION

[0018] like Figures 1-9As shown, an adjustable railway section communication equipment includes a main pressure plate 5 and an auxiliary pressure plate 6 that cooperate with each other. A communication box 2 equipped with a communication component is fixedly installed on one side of the main pressure plate 5. The main pressure plate 5 and the auxiliary pressure plate 6 are both semicircular structures. The main pressure plate 5 and the auxiliary pressure plate 6 can be fixed to the outside of the utility pole 1 by bolts, thereby installing the communication box 2.

[0019] When there are obstacles in the area, the height of the communication box 2 needs to be raised to avoid signal blind spots caused by terrain obstruction. Based on this, in this solution, pressure wheels 11 are elastically installed on the main pressure plate 5 and the auxiliary pressure plate 6. When the main pressure plate 5 and the auxiliary pressure plate 6 are sleeved on the outside of the utility pole 1, the pressure wheels 11 are pressed tightly against the outside of the utility pole 1 by elastic force, thereby facilitating the adjustment of the height of the communication box 2. Furthermore, a rotating shaft 22 is installed on the side of the communication box 2 close to the main pressure plate 5, and the rotating shaft 22 is driven to rotate by the motor in the communication box 2. Studs 10 are arranged on the upper and lower sides of the rotating shaft 22, and a split walking assembly is installed on the stud 10. The stud 10 and the rotating shaft 22 are connected by a transmission unit 15. Initially, the split walking assembly installed on the stud 10 is in a close state and is located in the middle position of the stud 10, so that in the process of the rotating shaft 22 driving the stud 10 to rotate forward, the friction between the split walking assembly and the telephone pole 1 can drive the communication box 2 to move upward along the telephone pole 1. When it reaches a certain height, the rotating shaft 22 drives the stud 10 to rotate in the opposite direction. During this process, the split walking assembly located on the stud 10 can be in a separated state, thereby providing space for the main pressure plate 5 and the auxiliary pressure plate 6 to fit with the telephone pole 1.

[0020] In order to make the main pressure plate 5 and the auxiliary pressure plate 6 close to each other and completely fit the outside of the pole 1, the present invention is provided with a connecting column 4. Figure 2 As shown, both ends of the main pressure plate 5 and the auxiliary pressure plate 6 extend outward to form connecting ear plates, and the outer side surfaces of the connecting ear plates are fixedly provided with screw sleeves 7, and the connecting column 4 passes through the two screw sleeves 7 and engages with their threads. Specifically, two sections of first external threads with opposite thread directions are provided on the outer surface of the connecting column 4 and at the positions of the two screw sleeves 7, so that the main pressure plate 5 and the auxiliary pressure plate 6 can be pushed closer to or away from each other during the rotation of the connecting column 4. In actual use, the rotating shaft 22 and the connecting column 4 are matched with each other to drive the connecting column 4 to rotate.

[0021] The split walking assembly includes two walking wheels 3 sleeved on the stud 10, combined with Figure 2 、 Figure 5 as well as Figure 9As shown, the outer surface of the walking wheel 3 is a curved surface 302 structure, so that the walking wheel 3 can fit the outer circumference of the pole 1. Through this structure, there is a large contact area between the walking wheel 3 and the pole 1, so that the communication box 2 can be stably driven to move upward. Figure 9 It can be seen from the figure that when the two running wheels 3 are in contact, the communication box 2 is driven to climb, and when the two running wheels 3 are in contact, the communication box 2 is driven to climb. Figure 5 In the separated state shown in , the main pressing plate 5 and the auxiliary pressing plate 6 are in full contact with the utility pole 1 , so that the communication box 2 can be stably installed on the utility pole 1 .

[0022] Furthermore, a sleeve 301 is fixedly provided on the outer end surface of the walking wheel 3, and the sleeve 301 is sleeved on the outside of the stud 10 and is threadedly connected to the stud 10. Specifically, two sections of second external threads with opposite thread directions are provided on the outer circumferential surface of the stud 10 and at the positions of the two sleeves 301, so that when the stud 10 rotates, the two walking wheels 3 can move closer to or away from each other, thereby realizing two working states of the split walking assembly; Furthermore, the outer circumference of the sleeve 301 is evenly provided with a plurality of limit grooves 3011, and the limit grooves 3011 are arranged along the axis of the sleeve 301, and the communication box 2 is fixedly provided with a limit plate 16, and the sleeve 301 passes through the preset through hole on the limit plate 16, Figure 4 、 Figure 7 When the stud 10 is in the ascending state, the two sets of walking wheels 3 are in contact with each other and are in the middle position of the stud 10. At this time, the side edges of the limiting groove 3011 contact the inclined surface 2301 on the limiting block 23, so that the stud 10 can drive the sleeve 301 to rotate forwardly relative to the limiting plate 16. In this process, the walking wheel 3 drives the communication box 2 upward through the friction between the utility pole 1. When the communication box 2 rises to the specified height, the rotating shaft 22 drives the stud 10 to rotate in the opposite direction. At this time, the cooperation between the limiting block 23 and the limiting groove 3011 can prevent the stud 10 from driving the sleeve 301 to rotate, so that the two walking wheels 3 can be separated during the rotation of the stud 10. Figure 5 As shown, at this time, the main pressure plate 5 and the auxiliary pressure plate 6 are in full contact with the utility pole 1.

[0023] Combine Figure 2-Figure 3As shown, the end of the rotating shaft 22 close to the connecting column 4 is provided with a driving bevel gear 20 through a one-way bearing sleeve, and the outer side of the connecting column 4 is provided with a driven bevel gear 13 meshing with the driving bevel gear 20, thereby driving the connecting column 4 to rotate, thereby causing the main pressure plate 5 and the auxiliary pressure plate 6 to approach each other.

[0024] During actual installation, the main pressure plate 5 and the auxiliary pressure plate 6 are placed on the outside of the pole 1 and the pressure wheel 11 and the running wheel 3 are in close contact with the outer circumference of the pole 1. Initially, the two sets of running wheels 3 are in the following position: Figure 9 In the state shown, there is a large contact area between the running wheels 3 and the utility pole 1. When the rotating shaft 22 drives the stud 10 to rotate synchronously, since the two sets of running wheels 3 are already in contact with each other, the stud 10 can drive the two sets of running wheels 3 in contact with each other to rotate, thereby driving the communication box 2 to climb along the utility pole 1. During this process, the rotating shaft 22 does not drive the active bevel gear 20 to rotate. When the communication box 2 is raised to its position, the motor drives the shaft 22 to rotate in the opposite direction. During the process of the shaft 22 driving the stud 10 to rotate in the opposite direction, the stud 10 cannot drive the sleeve 301 and the travel wheel 3 to rotate in the opposite direction due to the cooperation between the limit block 23 and the limit groove 3011. Therefore, under the condition of thread engagement, the process of the stud 10 rotating in the opposite direction can cause the two sets of travel wheels 3 to gradually separate. Figure 5 As shown, as the two sets of running wheels 3 gradually separate, the running wheels 3 also lose contact with the utility pole 1, thereby preparing for the main pressure plate 5 and the auxiliary pressure plate 6 to fit the outside of the utility pole 1. At the same time, as the rotating shaft 22 rotates in the opposite direction, the rotating shaft 22 can drive the active bevel gear 20 to rotate through the one-way bearing, thereby utilizing the engagement of the active bevel gear 20 with the driven bevel gear 13 to drive the connecting column 4 to rotate. According to the above description, during the rotation of the connecting column 4, the main pressure plate 5 and the auxiliary pressure plate 6 can approach each other and completely fit the outside of the utility pole 1, which is conducive to maintaining the stability of the communication box 2.

[0025] To sum up, this device sets up a split walking component, so that the walking wheel 3 mounted on the outside of the stud 10 can be in close contact with the outer circumference of the utility pole 1, and during the climbing process of the communication box 2, the contact between the walking wheel 3 and the utility pole 1 can remain stable. During the separation of the two walking wheels 3, the walking wheel 3 can easily disengage from the outer wall of the utility pole 1, thereby providing space for the main pressure plate 5 and the auxiliary pressure plate 6 to completely fit the outside of the utility pole 1, so that the communication box 2 can be stably installed on the utility pole 1.

[0026] Combine Figure 3-Figure 7As shown, a connecting rod 18 is provided between one set of sleeves 301 and the rotating shaft 22. Specifically, the sleeve 301 can pass through the connecting rod 18 and rotate with it through a bearing, while the rotating shaft 22 passes through the connecting rod 18 and the connecting rod 18 can move relative to the rotating shaft 22 along the axial direction of the rotating shaft 22. A pressure rod 19 is slidably arranged in the rotating shaft 22. The end of the pressure rod 19 close to the active bevel gear 20 has a conical surface 1902 structure. A telescopic rod 21 is elastically connected to the outer wall of the rotating shaft 22. The telescopic rod 21 can move along the diameter direction of the rotating shaft 22. Initially, the bottom end of the telescopic rod 21 falls on the conical surface 1902 of the pressure rod 19. The inner wall of the active bevel gear 20 is provided with a slot 2001 that cooperates with the telescopic rod 21, and the outer wall of the pressure rod 19 is fixedly provided with a ridge 1901, which extends to the outside of the rotating shaft 22 and is located on one side of the connecting rod 18. In actual use, when the rotating shaft 22 rotates in the opposite direction and drives the two sets of walking wheels 3 away from each other, the connecting rod 18 can move outward with the walking wheels 3, so that the connecting rod 18 can push the pressure rod 19 to move relative to the telescopic rod 21 through the ridge 1901, and the conical surface 1902 can move the pressure rod 19 relative to the telescopic rod 21. The squeezing of the telescopic rod 21 can drive the telescopic rod 21 to move outward, so that the end of the telescopic rod 21 away from the rotating shaft 22 can be inserted into the card slot 2001. Therefore, in the process of dismantling the communication box 2, it is only necessary to drive the rotating shaft 22 to rotate in the forward direction. At this time, the rotating shaft 22 can drive the active bevel gear 20 to rotate through the cooperation of the telescopic rod 21 and the card slot 2001, and then drive the connecting column 4 to rotate through the engagement of the active bevel gear 20 and the driven bevel gear 13, so that the main pressure plate 5 and the auxiliary pressure plate 6 can be gradually separated.

[0027] Reference Figure 1-Figure 2 As shown, the main pressure plate 5 and the auxiliary pressure plate 6 are provided with a through groove for the pressure wheel 11 to pass through, and the end faces of both ends of the pressure wheel 11 are fixedly provided with a connecting shaft, and the outer side surfaces of the auxiliary pressure plate 6 and the main pressure plate 5 are fixedly provided with a guide frame 9, and a slider 8 is slidably assembled in the guide frame 9. The end of the connecting shaft away from the pressure wheel 11 is rotated with the slider 8 through a first one-way bearing, Figure 2 It can be seen that the cross bar on the slider 8 passes through the guide frame 9 and slides with it, and a limit spring 12 is provided between the ends of the slider 8 and the guide frame 9. Through the action of the limit spring 12, the pressure wheel 11 can be pressed against the outside of the telephone pole 1, and the pressure wheel 11 rotates in a single direction, so that the pressure wheel 11 can only roll upward along the telephone pole 1. Through this structure, when the walking wheel 3 drives the communication box 2 to climb to the specified height, the sliding friction between the pressure wheel 11 and the telephone pole 1 can keep the communication box 2 stable.

[0028] A certain distance is left between the end of the connecting column 4 away from the nut 7 and the communication box 2. A strip groove 401 is provided on the outer circumferential surface of the connecting column 4, and a protrusion 1301 that slides with the strip groove 401 is fixedly provided on the inner wall of the driven bevel gear 13. Through this structure, the driven bevel gear 13 can also slide along its axis relative to the connecting column 4 while driving the connecting column 4 to rotate synchronously.

[0029] Both ends of the stud 10 are rotatably mounted with support rods, and the support rods are fixedly connected to the communication box 2. The outer side of the driven bevel gear 13 is provided with an annular seat 14 through a bearing rotation sleeve. The annular seat 14 is fixedly connected to the support rod through a bracket, and the main pressure plate 5 and the communication box 2 are fixedly connected through a fixing rod 201.

[0030] A mounting base 17 is fixedly provided on the inner side of the communication box 2, and a rotating shaft 22 passes through the mounting base 17 and rotates with it through a bearing. The motor installed in the communication box 2 is connected to the rotating shaft 22 through a gear set, and the transmission unit 15 between the rotating shaft 22 and the stud 10 can be a belt or a chain.

[0031] Reference Figure 6 As shown, the telescopic rod 21 is composed of a sliding sleeve and a sliding rod sliding in the sliding sleeve, and a spring is fixedly arranged between the sliding rod and the inner end surface of the sliding sleeve, and a stepped hole matching the pressure rod 19 is provided in the rotating shaft 22, so that the pressure rod 19 slides in the stepped hole. In addition, a slot connected to the stepped hole is provided on the rotating shaft 22, so that the protrusion 1901 passes through the slot and moves relative to the rotating shaft 22. A retaining ring is fixed on one end of the telescopic rod 21 located inside the stepped hole, and a reset spring is fixed between the retaining ring and the inner wall of the stepped hole.

[0032] from Figure 7 It can be seen from the figure that the limiting block 23 slides in the mounting groove on the inner wall of the through hole, and a first spring is fixedly arranged between the inner end surface of the mounting groove and the limiting block 23.

[0033] The above disclosure is only a preferred example of the present application, and its purpose is to facilitate the understanding and implementation of those skilled in the art. However, it cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made within the scope recorded in the present application still fall within the scope covered by the present application.

Claims

1. An adjustable railway section communication device, characterized in that: include: A main pressure plate (5) for connecting to the communication box (2); A secondary pressure plate (6) is connected to the main pressure plate (5), and both the main pressure plate (5) and the secondary pressure plate (6) are semicircular in structure and can be sleeved on the outside of the electric pole (1); A pressure wheel (11) is elastically connected to the outer sides of the main pressure plate (5) and the auxiliary pressure plate (6), and can maintain the stability of the communication box (2) relative to the telephone pole (1) through the friction between the pressure wheel (11) and the telephone pole (1); A rotating shaft (22) is rotatably connected to the communication box (2), and studs (10) are arranged on both upper and lower sides of the rotating shaft (22), and the rotating shaft (22) can drive the studs (10) to rotate synchronously; The split traveling assembly is mounted on the stud (10) and can rotate synchronously with the stud (10). When the stud (10) drives the split traveling assembly to rotate in the forward direction, the communication box (2) can move upward along the electric pole (1). When the rotating shaft (22) drives the stud (10) to rotate in the reverse direction, the split traveling assembly located on the stud (10) is in a separated state, so that the main pressure plate (5) and the auxiliary pressure plate (6) have a space to fit with the electric pole (1).

2. The adjustable railway section communication device according to claim 1, characterized in that: Both ends of the main pressure plate (5) and the auxiliary pressure plate (6) extend outward to form connecting ear plates, and the outer side surfaces of the connecting ear plates are fixedly provided with screw sleeves (7). The connecting column (4) located at the connecting ear plates passes through the two screw sleeves (7) and is threadedly engaged with them. During the rotation of the connecting column (4), the main pressure plate (5) and the auxiliary pressure plate (6) can be pushed closer to or farther away from each other, and the rotating shaft (22) and the connecting column (4) are in transmission cooperation.

3. The adjustable railway section communication device according to claim 2, characterized in that: The split walking assembly comprises two walking wheels (3) sleeved on a stud (10), a sleeve (301) being fixedly provided at an outer end surface of the walking wheel (3), the sleeve (301) being sleeved on the outer side of the stud (10) and being threadedly connected to the stud (10), and the two walking wheels (3) can move closer to or farther away from each other during the rotation of the stud (10).

4. The adjustable railway section communication device according to claim 3, characterized in that: A plurality of groups of limiting grooves (3011) are evenly formed on the outer circumferential surface of the sleeve (301), a limiting plate (16) is fixedly provided on the communication box (2), the sleeve (301) passes through a preset through hole on the limiting plate (16), a limiting block (23) matching the limiting groove (3011) is elastically connected to the inner wall of the through hole, and an inclined surface (2301) is provided on one end of the limiting block (23) extending to the outside of the limiting plate (16).

5. The adjustable railway section communication device according to claim 2, characterized in that: An end of the rotating shaft (22) close to the connecting column (4) is provided with a driving bevel gear (20) via a one-way bearing sleeve, and an outer side of the connecting column (4) is provided with a driven bevel gear (13) meshing with the driving bevel gear (20).

6. The adjustable railway section communication device according to claim 1, characterized in that: A guide frame (9) is fixedly provided on the outer side of the auxiliary pressure plate (6) and the main pressure plate (5), a slider (8) is elastically connected to the guide frame (9), and a connecting shaft at the end of the pressure wheel (11) is rotatably matched with the slider (8) through a first one-way bearing.

7. The adjustable railway section communication device according to claim 1, characterized in that: The main pressure plate (5) and the communication box (2) are connected via a fixing rod (201).

8. The adjustable railway section communication device according to claim 1, characterized in that: The main pressure plate (5) and the auxiliary pressure plate (6) are both provided with a through slot for the pressure wheel (11) to pass through.

9. The adjustable railway section communication device according to claim 2, characterized in that: Two sections of first external threads with opposite thread directions are provided on the outer surface of the connecting column (4) and at the positions of the two screw sleeves (7).

10. The adjustable railway section communication device according to claim 3, characterized in that: Two sections of second external threads with opposite thread directions are provided on the outer circumferential surface of the stud (10) at positions located on the two sleeves (301).

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