A laser projection system for dynamic calibration of a railway safety zone

Abstract

The utility model provides a kind of laser projection system for railway safety area dynamic calibration, it is related to railway safety operation, including base, support column, fine adjustment device, damping frame and laser projector;Base is fixedly arranged on the ground of rail side;Support column is perpendicular to ground, and the bottom of support column is detachably connected with base, and the top of support column is provided with coarse adjustment device;Fine adjustment device is fixedly arranged above support column, and the bottom of fine adjustment device is fixedly connected with coarse adjustment device;Damping frame is fixedly arranged above fine adjustment device;Laser projector is fixedly connected with damping frame, and the projection direction of laser projector is towards the railway safety area of calibration.The utility model realizes quick deployment by detachably connected base and support column, and cooperates with coarse adjustment and fine adjustment device, and laser projector can be adjusted to calibration position efficiently and accurately.

Description

Technical Field

[0001] This utility model relates to the field of railway safety operation technology, and more specifically, to a laser projection system for dynamic calibration of railway safety areas. Background Technology

[0002] In the field of railway transportation and maintenance, accurately delineating safety zones is a crucial step in ensuring the safety of personnel and equipment. For a long time, this field has mainly relied on traditional methods such as setting up physical barriers or affixing fixed warning signs on the ground to define areas. These methods, to a certain extent, meet the needs of static safety protection. However, with the diversification and dynamism of railway operation scenarios, especially in temporary and rapidly deployed tasks, existing technical solutions have revealed obvious limitations. For example, the deployment and removal efficiency of physical signs is low, making it difficult to quickly respond to the dynamic adjustment needs of areas in case of emergencies such as approaching trains. At the same time, fixed signs have poor visibility in complex lighting or inclement weather and are easily damaged by being run over or eroded by wind and rain, affecting the reliability and durability of the safety warning effect.

[0003] Given the shortcomings of existing technologies, there is an urgent need for a laser projection system for dynamic calibration of railway safety zones. Utility Model Content

[0004] The purpose of this invention is to provide a laser projection system for dynamic calibration of railway safety areas, thereby improving the aforementioned problems. To achieve this objective, the technical solution adopted by this invention is as follows:

[0005] This application provides a laser projection system for dynamic calibration of railway safety zones, characterized in that it includes: a base, a support column, a fine-tuning device, a vibration damping frame, and a laser projector; the base is fixedly installed on the ground beside the railway track; the support column is installed perpendicular to the ground, with its bottom detachably connected to the base, and a coarse-tuning device installed at the top of the support column; the fine-tuning device is fixedly installed above the support column, with its bottom fixedly connected to the coarse-tuning device; the vibration damping frame is fixedly installed above the fine-tuning device; the laser projector is fixedly connected to the vibration damping frame, and the projection direction of the laser projector is towards the calibrated railway safety zone.

[0006] Furthermore, the base is provided with a dovetail protrusion, and the bottom of the support column is provided with a groove that mates with the dovetail protrusion. The support column is connected to the base by the dovetail protrusion.

[0007] Furthermore, the base also includes two limiting devices, both of which are engaged with the dovetail protrusion and are disposed on both sides of the bottom of the support column.

[0008] Furthermore, the limiting device includes a limiting block and a rotating handwheel. The limiting block is provided with a groove that mates with the dovetail protrusion. The limiting block moves along the straight line of the dovetail protrusion, and the threaded portion of the rotating handwheel passes through the limiting block and contacts the dovetail protrusion.

[0009] Furthermore, the coarse adjustment device includes a ball joint mounting base and a metal ball. The ball joint mounting base has a spherical opening at its top, and the metal ball cooperates with the spherical opening. The metal ball has a threaded blind hole. The bottom of the fine adjustment device is a screw structure, and the fine adjustment device is fixedly connected to the coarse adjustment device through the threaded blind hole.

[0010] Furthermore, the fine-tuning device includes a lower plate, a screw mechanism, and an upper plate. Both the lower plate and the upper plate are provided with threaded through holes that cooperate with the screw mechanism. The two ends of the screw mechanism are fixedly connected to the lower plate and the upper plate respectively, and the height and tilt angle of the upper plate are adjusted.

[0011] Furthermore, the spiral structure includes three screws and twelve nuts. The three screws are arranged in parallel, and all the nuts are fixed to the screws. Two nuts are provided at the connection points between the upper plate and any of the screws, and the two nuts are respectively located on both sides of the upper plate. Two nuts are provided at the connection points between the lower plate and any of the screws, and the two nuts are respectively located on both sides of the lower plate.

[0012] Furthermore, the vibration damping frame includes a rotating base, a C-shaped frame, and a mounting frame. The rotating base is rotatably connected to the top of the fine-tuning device via a lower threaded structure. The lower part of the C-shaped frame is fixedly connected to the rotating base. A suspension point is provided on the upper inner side of the C-shaped frame. The mounting frame is fixedly installed at the opening of the C-shaped frame via the suspension point.

[0013] Furthermore, a vibration-damping connector is provided between the mounting frame and the laser projector housing.

[0014] Furthermore, the vibration damping connector is made of silicone.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention enables rapid deployment through a detachable base and support column. With the help of coarse and fine adjustment devices working together, it can efficiently and accurately adjust the laser projector to the target position. At the same time, its unique vibration damping frame can effectively suppress the transmission of vibrations generated when trains pass by, thereby ensuring clear and stable projection of laser markings in complex railway environments.

[0017] 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

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the laser projection system for dynamic calibration of railway safety areas according to this utility model;

[0020] Figure 2 This is a front view of the laser projection system for dynamic calibration of railway safety areas according to this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the vibration damping frame.

[0022] The markings in the diagram are: 1. Base; 11. Dovetail protrusion; 12. Limiting device; 2. Support column; 21. Coarse adjustment device; 211. Ball joint mounting seat; 212. Metal ball; 3. Fine adjustment device; 31. Lower plate; 32. Screw mechanism; 33. Upper plate; 4. Vibration damping frame; 41. Rotating base; 42. C-shaped frame; 43. Mounting frame; 5. Laser projector. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] like Figure 1 As shown, this embodiment provides a laser projection system for dynamic calibration of railway safety areas. It comprises: a base 1, a support column 2, a fine-tuning device 3, a vibration-damping frame 4, and a laser projector 5. The base 1 is fixedly installed on the ground beside the railway track. The support column 2 is perpendicular to the ground, with its bottom detachably connected to the base 1, and a coarse-tuning device 21 installed at its top. The fine-tuning device 3 is fixedly installed above the support column 2, with its bottom fixedly connected to the coarse-tuning device 21. The vibration-damping frame 4 is fixedly installed above the fine-tuning device 3. The laser projector 5 is fixedly connected to the vibration-damping frame 4, and its projection direction is towards the calibrated railway safety area. The core of this laser projection system lies in its modular, multi-functional structure design to address the complex and dynamic working environment beside the railway. Starting from a stable ground foundation, the system sequentially integrates a quick-installation support structure, a coarse-tuning interface for large-area initial positioning, an adjustment mechanism for fine-calibrating the projection angle, and isolation components specifically designed to withstand mechanical vibration interference, ultimately providing stable support for the laser projector 5. This hierarchical architecture with functional layering aims to ensure that the laser projector 5, a precision optical device, can operate on a relatively stable working platform with precise attitude control. This ensures that the safety zone markings it projects can maintain a clear outline and accurate position even when faced with continuous or instantaneous disturbances caused by passing trains, thus meeting the on-site requirements for temporary and highly reliable safety calibration.

[0026] Preferably, the base 1 is provided with a dovetail protrusion 11, and the bottom of the support column 2 is provided with a groove that mates with the dovetail protrusion 11. The support column 2 is connected to the base 1 by the dovetail protrusion 11. This design allows operators to quickly complete the initial positioning and installation of the support column 2 on the base 1 through a simple linear sliding motion, significantly improving the deployment efficiency of equipment in the specific environment of railway sites. At the same time, the self-locking characteristic of the dovetail groove structure itself can effectively resist lateral forces, providing basic mechanical protection to prevent the support column 2 from shifting when subjected to lateral loads such as accidental collisions or strong winds.

[0027] Preferably, the base 1 further includes two limiting devices 12, both of which engage with the dovetail protrusions 11 and are located on both sides of the bottom of the support column 2. This is to create a bidirectional mechanical lock for the slidably installed support column 2. The limiting block engages with the dovetail protrusions 11 of the base 1 through its groove, allowing it to move along a specific path to adapt to and precisely approach the bottom of the support column 2. The operator, by turning the handwheel, utilizes the axial force generated by the threaded joint to directly and smoothly press the limiting block against the side of the support column 2. This design is not only easy to operate and requires no additional tools, but also generates a stable and precisely controllable locking force, effectively eliminating the play at the connection between the support column 2 and the base 1, ensuring the rigidity of the core support structure connection from both sides.

[0028] Preferably, the limiting device 12 includes a limiting block and a rotating handwheel. The limiting block has a groove that mates with the dovetail protrusion 11. The limiting block moves along the linear direction of the dovetail protrusion 11, and the threaded portion of the rotating handwheel passes through the limiting block and contacts the dovetail protrusion 11. The groove at the bottom of the limiting block allows it to slide and position itself along the dovetail protrusion 11, while the threaded pushing mechanism of the rotating handwheel can directly and smoothly apply the locking force to the protrusion reference surface. This design allows the operator to quickly tighten and loosen both sides of the support column 2 without tools, ensuring connection rigidity while also facilitating on-site debugging and maintenance.

[0029] Preferably, such as Figure 2 As shown, the coarse adjustment device 21 includes a ball joint mounting base 211 and a metal ball 212. The ball joint mounting base 211 has a spherical opening at its top, and the metal ball 212 mates with the spherical opening. The metal ball 212 has a threaded blind hole. The fine adjustment device 3 has a screw structure at its bottom and is fixedly connected to the coarse adjustment device 21 through the threaded blind hole. The omnidirectional movement of the metal ball 212 within the spherical opening allows the operator to roughly align the entire assembly above the support column 2 in the pitch and yaw directions before tightening, so that its projection direction roughly covers the target area. Subsequently, by screwing the screw at the bottom of the fine adjustment device 3 into the threaded blind hole of the metal ball 212, a preliminary rigid connection can be achieved at a selected angle, laying a reliable foundation for subsequent fine adjustments.

[0030] Preferably, the fine-tuning device 3 includes a lower plate 31, a screw mechanism 32, and an upper plate 33. Both the lower plate 31 and the upper plate 33 have threaded through holes that mate with the screw mechanism 32. The two ends of the screw mechanism 32 are fixedly connected to the lower plate 31 and the upper plate 33 respectively, allowing adjustment of the height and tilt angle of the upper plate 33. By adjusting the extension and retraction of each screw mechanism 32, the height of the upper plate 33 at different positions can be independently controlled, thereby precisely changing its horizontality and pitch angle. This design enables the laser projector 5 mounted above to perform extremely precise pitch, roll, and overall height adjustments, ultimately ensuring that the laser beam is projected onto the ground at a precise angle, forming a safety zone marker with the required position and shape.

[0031] Preferably, the spiral structure includes three screws and twelve nuts. The three screws are arranged in parallel, and all nuts are fixed to the screws. Two nuts are provided at each connection point between the upper plate 33 and any screw, with the two nuts located on opposite sides of the upper plate 33. Similarly, two nuts are provided at each connection point between the lower plate 31 and any screw, with the two nuts located on opposite sides of the lower plate 31. The core purpose of this design is to construct a stable and precisely lockable three-point adjustment mechanism. Each screw is connected to both ends of the lower plate 31 and the upper plate 33 via double-nut clamping. This double-nut anti-loosening structure effectively resists vibration and prevents spontaneous changes in position after adjustment. By rotating the three screws, the height of the three support points of the upper plate 33 can be independently and precisely controlled, thereby achieving reliable fine-tuning and secure locking of the planar attitude (including levelness and tilt) of the upper plate 33, providing a stable installation reference for the optical equipment above.

[0032] Preferably, such as Figure 3 As shown, the vibration damping frame 4 includes a rotating base 41, a C-frame 42, and a mounting frame 43. The rotating base 41 is rotatably connected to the top of the fine-tuning device 3 via a lower threaded structure. The lower part of the C-frame 42 is fixedly connected to the rotating base 41, and a suspension point is provided on the upper inner side of the C-frame 42. The mounting frame 43 is fixedly installed at the opening of the C-frame 42 via the suspension point. The vibration damping frame 4 adopts a combination design of the rotating base 41, the C-frame 42, and the suspended mounting frame 43, aiming to achieve convenient adjustment of the projector's horizontal azimuth angle and introduce vibration isolation function. The rotating base 41 allows the entire upper structure to rotate around the vertical axis, realizing rapid coarse adjustment of the projection direction; the C-frame 42 provides the necessary installation space and structural rigidity; and its core lies in the fact that the mounting frame 43 is connected to the upper part of the C-frame 42 via the suspension point. This suspension method essentially constitutes a flexible support, which can effectively isolate and attenuate high-frequency vibrations transmitted from the support structure, thereby protecting the precision optical components inside the laser projector 5 and ensuring the stability of the projected light spot.

[0033] Preferably, a vibration-damping connector is provided between the mounting frame 43 and the housing of the laser projector 5. This aims to create a secondary vibration isolation barrier. This extends the macroscopic vibration-damping effect of the suspended mounting frame 43 to the direct contact points with the equipment housing, more effectively filtering out high-frequency fine vibrations.

[0034] Preferably, the vibration damping connector is made of silicone. Silicone material possesses excellent damping properties and elasticity, enabling it to absorb and dissipate vibrational energy through its own deformation.

[0035] 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.

[0036] 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 projection system for dynamic calibration of railway safety zones, characterized in that, include: Base (1), which is fixedly set on the ground on the side of the rail; Support column (2), the support column (2) is set perpendicular to the ground, the bottom of the support column (2) is detachably connected to the base (1), and the top of the support column (2) is provided with a coarse adjustment device (21); Fine adjustment device (3), the fine adjustment device (3) is fixedly installed above the support column (2), and the bottom of the fine adjustment device (3) is fixedly connected to the coarse adjustment device (21); Vibration damping frame (4), the vibration damping frame (4) is fixedly installed above the fine adjustment device (3); as well as A laser projector (5) is fixedly connected to the vibration damping frame (4), and the projection direction of the laser projector (5) is toward the designated railway safety area.

2. The laser projection system for dynamic calibration of railway safety areas according to claim 1, characterized in that: The base (1) is provided with a dovetail protrusion (11), and the bottom of the support column (2) is provided with a groove that cooperates with the dovetail protrusion (11). The support column (2) is connected to the base (1) by the dovetail protrusion (11).

3. The laser projection system for dynamic calibration of railway safety areas according to claim 2, characterized in that: The base (1) also includes two limiting devices (12), both of which are engaged with the dovetail protrusion (11) and are located on both sides of the bottom of the support column (2).

4. The laser projection system for dynamic calibration of railway safety areas according to claim 3, characterized in that: The limiting device (12) includes a limiting block and a rotating handwheel. The limiting block is provided with a groove that cooperates with the dovetail protrusion (11). The limiting block moves along the straight line of the dovetail protrusion (11). The threaded part of the rotating handwheel passes through the limiting block and contacts the dovetail protrusion (11).

5. The laser projection system for dynamic calibration of railway safety areas according to claim 1, characterized in that: The coarse adjustment device (21) includes a ball joint mounting base (211) and a metal ball (212). The ball joint mounting base (211) has a spherical opening at the top. The metal ball (212) cooperates with the spherical opening. The metal ball (212) has a threaded blind hole. The bottom of the fine adjustment device (3) is a screw structure. The fine adjustment device (3) is fixedly connected to the coarse adjustment device (21) through the threaded blind hole.

6. The laser projection system for dynamic calibration of railway safety areas according to claim 1, characterized in that: The fine adjustment device (3) includes a lower plate (31), a screw mechanism (32) and an upper plate (33). Both the lower plate (31) and the upper plate (33) are provided with threaded through holes that cooperate with the screw mechanism (32). The two ends of the screw mechanism (32) are fixedly connected to the lower plate (31) and the upper plate (33) respectively, and the height and tilt angle of the upper plate (33) are adjusted.

7. The laser projection system for dynamic calibration of railway safety areas according to claim 6, characterized in that: The spiral mechanism includes three screws and twelve nuts. The three screws are arranged in parallel, and all the nuts are fixed on the screws. Two nuts are provided at the connection between the upper plate (33) and any of the screws, and the two nuts are respectively located on both sides of the upper plate (33). Two nuts are provided at the connection between the lower plate (31) and any of the screws, and the two nuts are respectively located on both sides of the lower plate (31).

8. The laser projection system for dynamic calibration of railway safety areas according to claim 1, characterized in that: The vibration damping frame (4) includes a rotating base (41), a C-shaped frame (42), and a mounting frame (43). The rotating base (41) is rotatably connected to the top of the fine-tuning device (3) through a lower threaded structure. The lower part of the C-shaped frame (42) is fixedly connected to the rotating base (41). A suspension point is provided on the upper inner side of the C-shaped frame (42). The mounting frame (43) is fixedly installed at the opening of the C-shaped frame (42) through the suspension point.

9. The laser projection system for dynamic calibration of railway safety areas according to claim 8, characterized in that: A vibration damping connector is provided between the mounting frame (43) and the housing of the laser projector (5).

10. The laser projection system for dynamic calibration of railway safety areas according to claim 9, characterized in that: The vibration damping connector is made of silicone.

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