Railway intrusion laser transceiver alarm device

Abstract

The utility model provides a kind of track invasion laser transceiving alarm device, it is related to alarm device technical field, including shell, laser is arranged in shell;First support rod is rotatably connected with shell;Second support rod is movably connected with first support rod;Drive assembly is set in second support rod, drive assembly is provided with rotatable drive part, drive part is suitable for moving along the height direction of two support rods and selectively cooperates with shell or first support rod, to drive first support rod moves in height direction relative to second support rod, or drive shell rotates in horizontal direction or vertical direction relative to first support rod.The utility model's alarm device appears deviation when pre-installation position, by adjusting the height and orientation of shell, so that the laser of two alarm devices matched can be directly opposite, so that alarm device can work normally, improve the installation fault tolerance of alarm device, to improve the installation efficiency of alarm device.

Description

Technical Field

[0001] This utility model relates to the field of alarm device technology, and more specifically, to a track intrusion laser transceiver alarm device. Background Technology

[0002] In rail transit operations, track safety is of paramount importance. Preventing unauthorized intrusion into the track area is a key aspect of ensuring the safe operation of trains. Existing track intrusion alarm devices typically use expansion bolts to fix them to the track base. However, this places extremely high demands on the placement of the expansion bolts (ensuring that the alarm device is directly aligned with them). If the expansion bolts are installed in the wrong position (hole position deviation or hole tilt), the holes need to be re-drilled. The previously incorrect holes will interfere with subsequent drilling operations, affecting installation quality and efficiency, and may even damage the structural integrity of the track base. Utility Model Content

[0003] The purpose of this invention is to provide a laser transceiver alarm device for track intrusion, thereby improving the aforementioned problems. To achieve this objective, the technical solution adopted by this invention is as follows:

[0004] This application provides a track intrusion laser transceiver alarm device, comprising: a housing, wherein a laser is disposed within the housing; a first support rod, which is rotatably connected to the housing; a second support rod, which is movably connected to the first support rod; and a drive assembly disposed within the second support rod, the drive assembly having a rotatable drive part adapted to move along the height direction of the two support rods and optionally engage with the housing or the first support rod, thereby driving the first support rod to move relative to the second support rod in the height direction, or driving the housing to rotate relative to the first support rod in the horizontal or vertical direction.

[0005] According to some embodiments of the present invention, the driving assembly includes a driving rod, and the outer periphery of the driving rod is respectively provided with a first mating part and a second mating part spaced apart in the axial direction. The housing is provided with a third mating part and a fourth mating part, and the first support rod is provided with a fifth mating part. The first mating part can be selectively mated with the third mating part or the fifth mating part, and the second mating part can be selectively mated with the fourth mating part.

[0006] According to some embodiments of this utility model, the outer periphery of the drive rod is provided with a first limiting block configured as a first mating part and a first bevel gear configured as a second mating part. The first bevel gear is coaxially arranged with the drive rod. The housing is provided with a second limiting block configured as a third mating part and a second bevel gear configured as a fourth mating part. The connection between the second bevel gear and the housing and the first support rod is directly opposite and located inside the first support rod. The inner peripheral wall of the first support rod is provided with a third limiting block configured as a fifth mating part. The second support rod is sleeved on the outer periphery of the first support rod. The outer peripheral wall of the first support rod is provided with a first thread, and the inner peripheral wall of the second support rod is provided with a second thread suitable for mating with the first thread.

[0007] According to some embodiments of the present invention, a ball head is provided on the outer periphery of the first support rod, and a ball groove is provided on the bottom of the housing, wherein the ball head is rotatably disposed in the ball groove.

[0008] According to some embodiments of the present invention, the ball head is provided with an installation channel that connects the interior and exterior of the first support rod in the radial direction, the second bevel gear is connected to the housing through a connecting rod, and the connecting rod is housed in the installation channel, which extends circumferentially along the first support rod.

[0009] According to some embodiments of the present invention, the top wall and / or bottom wall of the installation channel are provided with a first sliding groove, the extension direction of the first sliding groove is parallel to the extension direction of the installation channel, and a sliding platform is provided on the outer periphery of the connecting rod, a portion of the sliding platform being slidably disposed within the first sliding groove.

[0010] According to some embodiments of the present invention, the slide table is provided with a through hole suitable for the connecting rod to pass through, the inner peripheral wall of the through hole is provided with a second sliding groove, the second sliding groove extends circumferentially along the through hole, and the outer peripheral wall of the connecting rod is provided with a slip ring, the slip ring being slidably disposed in the second sliding groove.

[0011] According to some embodiments of the present invention, the drive assembly further includes a rotary motor and a telescopic motor. The rotating shaft of the rotary motor is coaxially connected to the drive rod. The telescopic motor is fixedly connected to the second support rod, and the piston rod of the telescopic motor is connected to the rotary motor. The telescopic motor is adapted to drive the rotary motor to move along the height direction of the second support rod.

[0012] According to some embodiments of the present invention, the housing is provided with louvers suitable for communicating between the inside and outside of the housing, and the louvers are directly opposite the laser.

[0013] According to some embodiments of the present invention, an alarm is provided inside the housing, which is adapted to issue an alarm when the laser emitted by the laser is blocked, and transmit the alarm to the control terminal.

[0014] The beneficial effects of this utility model are as follows:

[0015] The driving component of this invention can drive the housing to move along the height direction of the second support rod, and can also drive the housing to rotate relative to the first support rod in the horizontal or vertical direction. This enables fine-tuning of the alarm device after installation. Therefore, even if there is a deviation in the pre-installation position of the alarm device, the alarm device of this application can adjust the height and orientation of the housing so that the lasers of the two matching alarm devices are aligned, thereby enabling the alarm device to work normally. This improves the installation tolerance of the alarm device and thus improves the installation efficiency of the alarm device.

[0016] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram showing the engagement of the first bevel gear and the second bevel gear of this utility model;

[0019] Figure 2 Figure 1 A magnified view of A in the center circle;

[0020] Figure 3 This is a schematic diagram showing the cooperation between the first limiting block and the second limiting block of this utility model;

[0021] Figure 4 This is a schematic diagram showing the cooperation between the first limiting block and the third limiting block of this utility model.

[0022] Marked in the image:

[0023] 10. Housing; 11. Second limiting block; 12. Second bevel gear; 13. Connecting rod; 131. Slip ring; 14. Slide table;

[0024] 20. First support rod; 21. Third limiting block; 22. Ball head;

[0025] 30. Second support rod;

[0026] 41. Drive rod; 411. First limit block; 412. First bevel gear; 42. Rotary motor. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] like Figures 1-4 As shown, this embodiment provides a track intrusion laser transceiver alarm device, including: a housing 10, a first support rod 20, a second support rod 30, and a drive assembly. A laser is disposed inside the housing 10. The first support rod 20 is rotatably connected to the housing 10, and the second support rod 30 is movably connected to the first support rod 20. The drive assembly is disposed inside the second support rod 30 and has a rotatable drive part. The drive part is adapted to move along the height direction of the two support rods and can selectively engage with the housing 10 or the first support rod 20, thereby driving the first support rod 20 to move relative to the second support rod 30 in the height direction, or driving the housing 10 to rotate relative to the first support rod 20 in the horizontal direction, or driving the housing 10 to rotate relative to the first support rod 20 in the vertical direction.

[0030] In some embodiments, a laser is provided inside the housing 10. The laser is used to emit or receive laser signals. The presence of an object intruding into the track area is determined by detecting whether the laser signal is blocked. The first support rod 20 is rotatably connected to the housing 10, and the second support rod 30 is movably connected to the first support rod 20. The first support rod 20 can move relative to the second support rod 30 in the height direction, thereby adjusting the height of the alarm device to adapt to different terrains or installation requirements.

[0031] A portion of the drive assembly is disposed within and movably connected to the second support rod 30. The drive assembly has a rotatable drive part that can move along the height direction of the second support rod 30. The drive part can be selectively engaged with either the housing 10 or the first support rod 20 as needed. When the drive part is engaged with the first support rod 20, the drive part is adapted to drive the first support rod 20 to move relative to the second support rod 30 in the height direction. When the drive part is engaged with the housing 10, the drive part is adapted to drive the housing 10 to rotate relative to the first support rod 20 in the horizontal or vertical direction.

[0032] It is understood that the alarm devices of this application are paired, with one alarm device's laser being a transmitting laser and the other alarm device's laser being a receiving laser. When the driving part of the drive assembly moves to engage with the first support rod 20, the rotation of the driving part can drive the first support rod 20 to move relative to the second support rod 30 in the height direction, thereby enabling the drive housing 10 to move in the height direction of the second support rod 30. This allows the height of the laser to be adjustable to adapt to terrain with height differences, so that the lasers of the two alarm devices can be on the same horizontal plane, or the lasers of the two alarm devices can be at a preset height difference.

[0033] When the drive unit of the drive assembly moves to engage with the housing 10, the rotation of the drive unit can drive the housing 10 to rotate in the horizontal direction, and the rotation of the drive unit can drive the housing 10 to rotate in the vertical direction, thereby aligning the lasers of the two alarm devices, and thus enabling the alarm devices to work normally.

[0034] According to the track intrusion laser transceiver alarm device of this utility model, its driving component can drive the housing 10 to move along the height direction of the second support rod 30, and can drive the housing 10 to rotate relative to the first support rod 20 in the horizontal or vertical direction. This realizes the fine-tuning operation of the alarm device after installation. Therefore, even if there is a deviation in the pre-installation position of the alarm device, the alarm device of this application can adjust the height and orientation of the housing 10 so that the lasers of the two matching alarm devices can be aligned, thereby enabling the alarm device to work normally, improving the installation fault tolerance of the alarm device, and thus improving the installation efficiency of the alarm device.

[0035] According to some embodiments of the present invention, the drive assembly includes a drive rod 41, which is configured as the drive part. The outer periphery of the drive rod 41 is respectively provided with a first mating part and a second mating part spaced apart in the axial direction. The housing 10 is provided with a third mating part and a fourth mating part. The first support rod 20 is provided with a fifth mating part. The first mating part can be selectively mated with the third mating part or the fifth mating part, and the second mating part can be selectively mated with the fourth mating part.

[0036] In some embodiments, the drive rod 41 moves along the height direction of the second support rod 30 and has a first position, a second position, a third position, and a fourth position. In the first position, the first mating part does not engage with the third and fifth mating parts, and the second mating part does not engage with the fourth mating part. In the second position, only the first mating part engages with the third mating part. At this time, rotation of the drive rod 41 can drive the housing 10 to rotate in the horizontal direction. In the third position, only the first mating part engages with the fifth mating part. At this time, rotation of the drive rod 41 can drive the first support rod 20 to rotate relative to the second support rod 30, thereby realizing the adjustment of the housing 10 in the height direction of the second support rod 30. In the fourth position, only the second mating part engages with the fourth mating part. At this time, rotation of the drive rod 41 can drive the housing 10 to rotate in the vertical direction.

[0037] It is understood that the drive assembly of this application uses two power sources (the power source for rotating the drive rod 41 and the power source for moving the drive rod 41) to drive the housing 10 to achieve three movements (the housing 10 moves in the height direction, the housing 10 rotates in the horizontal direction, and the housing 10 rotates in the vertical direction), which reduces the number of power sources and thus reduces the production cost of the alarm device.

[0038] According to some embodiments of the present invention, the outer periphery of the drive rod 41 is provided with a first limiting block 411 configured as a first mating part and a first bevel gear 412 configured as a second mating part. The first bevel gear 412 is coaxially arranged with the drive rod 41. The housing 10 is provided with a second limiting block 11 configured as a third mating part and a second bevel gear 12 configured as a fourth mating part. The connection between the second bevel gear 12 and the housing 10 and the first support rod 20 is directly opposite and located inside the first support rod 20. The inner peripheral wall of the first support rod 20 is provided with a third limiting block 21 configured as a fifth mating part. The second support rod 30 is sleeved on the outer periphery of the first support rod 20. The outer peripheral wall of the first support rod 20 is provided with a first thread, and the inner peripheral wall of the second support rod 30 is provided with a second thread suitable for mating with the first thread.

[0039] Understandably, a portion of the drive rod 41 is rotatably disposed within the first support rod 20. When the drive rod 41 moves to the second position, the first limiting block 411 is located within the housing 10, and the first limiting block 411 is adapted to abut against the second limiting block 11 of the housing 10 in the circumferential direction. Thus, when the drive rod 41 rotates, it can drive the first limiting block 411 to rotate. The first limiting block 411 and the second limiting block 11 cooperate to drive the housing 10 to rotate in the horizontal direction. In the third position, the first limiting block 411 is located within the first support rod 20 and abuts against the third limiting block 21 in the circumferential direction. At this time, the rotation of the drive rod 41 can drive the first limiting block 411 to rotate, and the first limiting block 411 and the third limiting block 21 cooperate to drive the housing 10 to rotate in the horizontal direction. 21 is engaged to drive the first support rod 20 to rotate relative to the second support rod 30. Since the outer peripheral wall of the first support rod 20 is provided with a first thread and the inner peripheral wall of the second support rod 30 is provided with a second thread that engages with the first thread, when the first support rod 20 rotates relative to the second support rod 30, it can also drive the first support rod 20 to move relative to the second support rod 30 in the height direction of the second support rod 30. In the fourth position, the first bevel gear 412 meshes with the second bevel gear 12. At this time, the rotation of the drive rod 41 can drive the first bevel gear 412 to rotate, the first bevel gear 412 to rotate, and the second bevel gear 12 to rotate, thereby driving the housing 10 to rotate in the vertical direction.

[0040] It is worth mentioning that the connection between the second bevel gear 12 and the housing 10 and the first support rod 20 is directly opposite each other. That is, the extension line of the axis of the second bevel gear 12 passes through the rotation center of the housing 10 relative to the first support rod 20 in the vertical direction. Therefore, the rotation of the second bevel gear 12 can stably drive the housing 10 to rotate relative to the first support rod 20 in the vertical direction.

[0041] According to some embodiments of the present invention, a ball head 22 is provided on the outer periphery of the first support rod 20, and a ball groove is provided on the bottom of the housing 10, with part of the ball head 22 rotatably disposed in the ball groove.

[0042] Understandably, the ball head 22 is rotatably disposed in the ball groove, which allows the housing 10 to rotate horizontally relative to the first support rod 20, and also allows the housing 10 to rotate vertically relative to the first support rod 20.

[0043] According to some embodiments of the present invention, the ball head 22 is provided with an installation channel that connects the interior and exterior of the first support rod 20 in the radial direction. The second bevel gear 12 is connected to the housing 10 through a connecting rod 13, and the connecting rod 13 is housed in the installation channel, which extends circumferentially along the first support rod 20.

[0044] It is understood that a connecting rod 13 is connected to the portion of the housing 10 directly opposite the ball head 22. The connecting rod 13 extends horizontally, and its other end passes through the mounting channel and extends into the first support rod 20. When the housing 10 rotates horizontally relative to the first support rod 20, the connecting rod 13 moves along the mounting channel, allowing the housing 10 to rotate stably relative to the first support rod 20 in the horizontal direction. Preferably, the perimeter of the cross-section of the ball head 22 at the mounting channel is C, and the length of the mounting channel is L, satisfying: 1 / 4 ≤ L / C ≤ 1 / 3. Thus, through the above arrangement, while ensuring the structural strength of the ball head 22, the housing 10 can have a greater ability to rotate horizontally relative to the first support rod 20.

[0045] According to some embodiments of the present invention, the top wall and / or bottom wall of the installation channel are provided with a first sliding groove, the extension direction of the first sliding groove is parallel to the extension direction of the installation channel, and a sliding table 14 is provided on the outer periphery of the connecting rod 13, a portion of the sliding table 14 being slidably disposed in the first sliding groove.

[0046] In some embodiments, the top wall of the installation channel may be provided with a first groove; the bottom wall of the installation channel may be provided with a first groove; or both the top and bottom walls of the installation channel may be provided with a first groove.

[0047] It is worth mentioning that part of the slide table 14 is slidably disposed in the first slide groove. The inner peripheral wall of the first slide groove can restrict part of the outer peripheral wall of the slide table 14, so that the slide table 14 can slide stably along the extension direction of the first slide groove, thereby enabling the connecting rod 13 to rotate stably around the axis of the drive rod 41, ensuring the rotational stability of the housing 10 in the horizontal direction.

[0048] According to some embodiments of the present invention, the slide table 14 is provided with a through hole suitable for the connecting rod 13 to pass through, the inner peripheral wall of the through hole is provided with a second sliding groove, the second sliding groove extends circumferentially along the through hole, and the outer peripheral wall of the connecting rod 13 is provided with a sliding ring 131, which is slidably disposed in the second sliding groove.

[0049] It is understandable that the slide table 14 is provided with a through hole, and part of the connecting rod 13 is rotatably disposed in the through hole. Thus, the connecting rod 13 can rotate stably relative to the slide table 14, thereby ensuring that the rotation of the connecting rod 13 can stably drive the housing 10 to rotate relative to the first support rod 20 in the vertical direction.

[0050] It is worth mentioning that a slip ring 131 is provided on the outer peripheral wall of the connecting rod 13, and a second sliding groove is provided on the inner peripheral wall of the through hole. The inner peripheral wall of the second sliding groove can restrict the outer peripheral wall of the slip ring 131, so that the slip ring 131 can rotate stably relative to the slide table 14, thereby allowing the connecting rod 13 to rotate stably relative to the slide table 14. Of course, the outer peripheral wall of the slide table 14 abuts against the inner peripheral wall of the second sliding groove in the axial direction of the connecting rod 13 to prevent the connecting rod 13 from moving relative to the ball head 22 in the axial direction, ensuring that the second bevel gear 12 can mesh stably with the first bevel gear 412, and further ensuring the connection stability between the housing 10 and the first support rod 20.

[0051] According to some embodiments of the present invention, the drive assembly further includes a rotary motor 42 and a telescopic motor. The rotation shaft of the rotary motor 42 is coaxially connected to the drive rod 41. The telescopic motor is fixedly connected to the second support rod 30, and the piston rod of the telescopic motor is connected to the rotary motor 42. The telescopic motor is adapted to drive the rotary motor 42 to move along the height direction of the second support rod 30.

[0052] In some embodiments, the telescopic motor can cause the piston rod to move along the height direction of the second support rod 30, thereby causing the rotary motor 42 to move along the height direction of the second support rod 30, thus enabling the drive rod 41 to switch between a first position, a second position, a third position, and a fourth position. When the drive rod 41 moves to the second, third, or fourth position, the rotary motor 42 operates to cause the rotating shaft to rotate, which in turn drives the drive rod 41 to rotate, thereby enabling the housing 10 to move in the height direction, rotate in the horizontal direction, or rotate in the vertical direction.

[0053] This application only requires two drive motors (rotation motor 42 and telescopic motor) to realize the three movements of the housing 10 (movement of housing 10 in the height direction, rotation of housing 10 in the horizontal direction and rotation of housing 10 in the vertical direction), which reduces the number of drive motors and thus reduces the production cost of the alarm device.

[0054] According to some embodiments of the present invention, the housing 10 is provided with louvers suitable for communicating between the interior and exterior of the housing 10, and the louvers are directly opposite the laser.

[0055] In some embodiments, the design of venetian blinds can guide and protect the laser's light emission and reception. Specifically, the arrangement of the venetian blind blades can prevent external light from directly shining on the laser, reducing interference from external light on the laser's operation and improving the accuracy of laser signal transmission and reception. At the same time, venetian blinds can also protect the laser from collisions and scratches from external objects.

[0056] Of course, the louvers can improve the heat exchange efficiency between the inside and outside of the housing 10, so that the heat of the laser can be discharged in time, thereby ensuring the normal operation of the laser. At the same time, when dust or rainwater and other impurities attempt to enter the housing 10, the tilted blades of the louvers will block most of the impurities, causing them to slide down along the blades. Only a small amount of filtered air can enter the housing 10, thereby protecting the laser and other internal components from dust and rainwater.

[0057] According to some embodiments of the present invention, an alarm is provided inside the housing 10. The alarm is adapted to issue an alarm when the laser emitted by the laser is blocked, and transmit the alarm to the control terminal.

[0058] In some embodiments, the alarm is connected to the transmitting or receiving system of a laser. The laser continuously emits a laser beam of a specific frequency and intensity. Under normal circumstances, the laser beam can reach the receiving end smoothly. When an object intrudes into the track and blocks the laser beam, the intensity of the laser received by the receiving end will change significantly or the laser signal will not be received at all. The alarm is equipped with a signal detection and processing circuit, which can monitor the signal transmitted from the laser receiving end in real time. When the signal detection and processing circuit detects an abnormality in the laser signal (such as the intensity being lower than a preset threshold or the signal being interrupted), it will trigger the alarm mechanism. At this time, the signal detection and processing circuit sends an electrical signal to the sound-emitting element or light-emitting element of the alarm (such as a buzzer, horn, LED light, etc.), causing it to emit an audible alarm (such as a sharp screech) or a visual alarm (such as a flashing red light) to attract the attention of personnel on site.

[0059] It's worth noting that the alarm system is also equipped with a communication module. This module supports both wired (e.g., Ethernet, RS-485) and wireless (e.g., Wi-Fi, Bluetooth, 4G / 5G) communication. The communication module encodes alarm information (such as alarm time, location, and type) and then sends it to the control terminal via the selected communication method. The control terminal can be a computer or server in a remote monitoring center, or a mobile device (e.g., a mobile phone or tablet) used by on-site management personnel. Upon receiving the alarm information, the control terminal decodes and displays it, allowing management personnel to promptly understand the track intrusion situation and take appropriate measures.

[0060] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0061] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A laser transceiver alarm device for track intrusion, characterized in that, include: A housing (10) is provided with a laser inside the housing (10); The first support rod (20) is rotatably connected to the housing (10); The second support rod (30) is movably connected to the first support rod (20); A drive assembly is disposed within the second support rod (30). The drive assembly is provided with a rotatable drive part, which is adapted to move along the height direction of the second support rod (30) and can selectively engage with the housing (10) or the first support rod (20) to drive the first support rod (20) to move relative to the second support rod (30) in the height direction, or drive the housing (10) to rotate relative to the first support rod (20) in the horizontal or vertical direction.

2. The track intrusion laser transceiver alarm device according to claim 1, characterized in that, The drive assembly includes a drive rod (41), and the outer periphery of the drive rod (41) is provided with a first mating part and a second mating part that are spaced apart in the axial direction. The housing (10) is provided with a third mating part and a fourth mating part. The first support rod (20) is provided with a fifth mating part. The first mating part can be selectively mated with the third mating part or the fifth mating part, and the second mating part can be selectively mated with the fourth mating part.

3. The track intrusion laser transceiver alarm device according to claim 2, characterized in that, The outer periphery of the drive rod (41) is provided with a first limiting block (411) configured as a first mating part and a first bevel gear (412) configured as a second mating part. The first bevel gear (412) is coaxially arranged with the drive rod (41). The housing (10) is provided with a second limiting block (11) configured as a third mating part and a second bevel gear (12) configured as a fourth mating part. The connection between the second bevel gear (12) and the housing (10) and the first support rod (20) is directly opposite and located inside the first support rod (20). The inner peripheral wall of the first support rod (20) is provided with a third limiting block (21) configured as a fifth mating part. The second support rod (30) is sleeved on the outer periphery of the first support rod (20). The outer peripheral wall of the first support rod (20) is provided with a first thread, and the inner peripheral wall of the second support rod (30) is provided with a second thread suitable for mating with the first thread.

4. The track intrusion laser transceiver alarm device according to claim 3, characterized in that, The outer periphery of the first support rod (20) is provided with a ball head (22), and the bottom of the housing (10) is provided with a ball groove, and part of the ball head (22) is rotatably disposed in the ball groove.

5. The track intrusion laser transceiver alarm device according to claim 4, characterized in that, The ball head (22) is provided with an installation channel that connects the inside and outside of the first support rod (20) in the radial direction. The second bevel gear (12) is connected to the housing (10) through a connecting rod (13), and the connecting rod (13) is housed in the installation channel, which extends circumferentially along the first support rod (20).

6. The track intrusion laser transceiver alarm device according to claim 5, characterized in that, The top and / or bottom walls of the installation channel are provided with a first sliding groove, the extension direction of the first sliding groove is parallel to the extension direction of the installation channel, and a sliding table (14) is provided on the outer periphery of the connecting rod (13), a portion of the sliding table (14) is slidably disposed in the first sliding groove.

7. The track intrusion laser transceiver alarm device according to claim 6, characterized in that, The slide (14) is provided with a through hole suitable for the connecting rod (13) to pass through. The inner peripheral wall of the through hole is provided with a second sliding groove, which extends circumferentially along the through hole. The outer peripheral wall of the connecting rod (13) is provided with a slip ring (131), which is slidably disposed in the second sliding groove.

8. The track intrusion laser transceiver alarm device according to claim 2, characterized in that, The drive assembly also includes a rotary motor (42) and a telescopic motor. The rotating shaft of the rotary motor (42) is coaxially connected to the drive rod (41). The telescopic motor is fixedly connected to the second support rod (30), and the piston rod of the telescopic motor is connected to the rotary motor (42). The telescopic motor is adapted to drive the rotary motor (42) to move along the height direction of the second support rod (30).

9. The track intrusion laser transceiver alarm device according to claim 1, characterized in that, The housing (10) is provided with louvers that are suitable for communicating between the inside and outside of the housing (10), and the louvers are facing the laser.

10. The track intrusion laser transceiver alarm device according to claim 1, characterized in that, An alarm is provided inside the housing (10), which is adapted to issue an alarm when the laser emitted by the laser is blocked and transmit the alarm to the control terminal.

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