A laser projection target device suitable for different sizes of underframes of rail vehicles

Abstract

The utility model discloses a rail vehicle manufacturing technical field's laser projection target marker suitable for the chassis of different parts size of rail vehicle, aims at solving the problem of low installation efficiency and poor applicability in prior art because target is difficult to adapt to different model vehicle chassis mounting hole due to size fixed, leads. The target marker includes work piece, is provided with a plurality of mounting holes on it, the sleeve nested in the mounting hole of work piece, first telescopic sleeve, second telescopic sleeve and telescopic rod are nested in order to form pagoda -like multistage telescopic structure, and are locked respectively by first jackscrew, second jackscrew, third jackscrew adjust;Connecting rod and connecting seat, fixed in the top of sleeve, screw and mounting seat are cooperated through thread, and the projector target is installed on mounting seat;The utility model passes through multilayer pagoda -like telescopic structure and is adapted to the mounting hole of different aperture, and realizes target height accurate positioning in combination with thread lifting, and effectively promotes assembly efficiency and equipment versatility.

Description

Technical Field

[0001] This utility model relates to a laser projection target device suitable for chassis frames of different sizes of rail vehicles, belonging to the field of rail vehicle manufacturing technology. Background Technology

[0002] Currently, in the production of domestic rail vehicles, most of the small parts on the vehicle chassis are connected by welding. Welding positioning is mainly done by manual on-site marking or by using welding templates. That is, process engineers process and manufacture auxiliary tooling based on the spatial coordinates of all parts according to CAD drawings. Operators determine the welding position of the parts by using the auxiliary tooling and specific reference points on the vehicle body. Finally, the parts to be welded are placed on the drawn outline to complete the welding. This results in a large workload and low efficiency in the parts installation process.

[0003] Intelligent laser projection technology can significantly improve the manufacturing efficiency of rail transit vehicles through high-precision optical positioning and dynamic mapping of 3D models. Its core functions cover the entire process of auxiliary operations, including automatic layout guidance, precise component positioning, rapid detection of geometric tolerances, visualization of measurement errors, and virtual assembly verification. In implementation, the laser projector is fixed directly above the vehicle chassis, and six reflective targets (as coordinate system reference points) are preset on the chassis surface. A global installation surface coordinate system is constructed by combining laser scanning and image analysis. The dimension reproduction module accurately projects key information such as the component installation outline and hole positions onto the chassis surface at a 1:1 scale, thereby assisting in component installation.

[0004] According to the requirements of the laser projection system software and coordinate system creation, each laser projector needs to be equipped with 6 reflectors, meaning that 6 targets need to be placed at specific points on the surface of the projected workpiece. Because there are numerous rail transit vehicle projects, the dimensions of the vehicle chassis vary from project to project, and the process holes for inserting the targets also differ. However, the size and model of the targets are relatively consistent, making it difficult to adapt the targets to different vehicle chassis models during installation, which brings great difficulty to the target installation.

[0005] Therefore, it is necessary to design a laser projection target that is suitable for the chassis of different parts of rail vehicles. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a laser projection target device suitable for the chassis of different parts of rail vehicles. It adapts to the installation requirements of multiple apertures through a multi-layer pagoda-shaped telescopic structure (sleeve / telescopic sleeve / telescopic rod) and a set screw locking mechanism. Combined with a screw-driven height adjustment mechanism, it achieves precise positioning of the projection target, significantly improving the applicability and efficiency of installation.

[0007] To solve the above-mentioned technical problems, this utility model is implemented using the following technical solution:

[0008] A laser projection target suitable for chassis frames of different component sizes on rail vehicles, comprising:

[0009] The workpiece has multiple mounting holes.

[0010] A sleeve is fitted into the mounting hole of the workpiece, with one end slidably connected to the workpiece.

[0011] The first telescopic sleeve is nested inside the sleeve and is slidably connected to the sleeve;

[0012] The first set screw passes through the side wall of the sleeve and abuts against the outer wall of the first telescopic sleeve;

[0013] The second telescopic sleeve is nested inside the first telescopic sleeve and is slidably connected to the first telescopic sleeve;

[0014] The second set screw passes through the side wall of the first telescopic sleeve and abuts against the outer wall of the second telescopic sleeve;

[0015] The telescopic rod is nested inside the second telescopic sleeve and is slidably connected to the second telescopic sleeve;

[0016] The third set screw passes through the side wall of the second telescopic sleeve and abuts against the outer wall of the telescopic rod;

[0017] A connecting rod, one end of which is fixedly connected to the other end of the sleeve;

[0018] A connecting seat is fixedly disposed at the other end of the connecting rod;

[0019] The screw rotates through the connecting seat;

[0020] The mounting base is threadedly connected to the screw.

[0021] The projector target is mounted on the mounting base.

[0022] Preferably, a connecting rod is welded to the top of the sleeve, and a connecting seat is welded to the end of the connecting rod away from the sleeve.

[0023] Preferably, guide seats are welded to both sides of the connecting seat, and first guide rods are welded to both sides of the mounting seat, with the first guide rods slidably connected to the guide seats.

[0024] Preferably, a knob is fixedly connected to one end of the screw near the connecting seat.

[0025] Preferably, the knob is provided with a plurality of grooves evenly spaced along the circumference, and at least two sliders are slidably disposed in the grooves, with a projector target installed between the sliders.

[0026] Preferably, the slider is elastically connected to the mounting base via a first elastic element, and a guide block is fixed to the side of the slider that is far apart from the other side.

[0027] Preferably, at least two protective plates are slidably disposed on the guide block, and multiple guide grooves are opened on the upper side of the protective plates that are close to each other. A second guide rod is disposed between the protective plates, and the second guide rod passes through the corresponding guide groove on the protective plate and slides in cooperation with the guide groove.

[0028] The second guide rod is elastically connected to the protective plate through a second elastic element.

[0029] Preferably, a protective cover is provided between the protective plates, and the protective cover covers the second guide rod and the second elastic element.

[0030] Preferably, a first magnet is installed on the lower inner side of the sleeve, the first telescopic sleeve, and the second telescopic sleeve, and a second magnet is installed on the upper outer side of the first telescopic sleeve, the second telescopic sleeve, and the telescopic rod, and the first magnet and the second magnet attract each other.

[0031] Preferably, rubber rings are installed on the outside of the sleeve, the first telescopic sleeve, the second telescopic sleeve, and the telescopic rod.

[0032] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0033] 1. Adjust the set screws according to the hole diameter of the mounting hole so that the first telescopic sleeve, the second telescopic sleeve and the telescopic rod form a pagoda shape, so that the projector target can be fixed on the mounting holes of workpieces of different sizes, thereby facilitating the installation of the projector target on vehicle workpieces of different sizes and improving the applicability of this device.

[0034] 2. By rotating the knob, the knob drives the screw to rotate, and the screw drives the mounting base to move left, right, up, and down under the guidance of the guide seat and the first guide rod, thereby adjusting the height of the target to meet the installation requirements of different vehicle models.

[0035] 3. The projector target is able to resist impacts from the left and right sides and the top and bottom sides through the cooperation of the protective plate, the first elastic element, the slider and the second elastic element, so as to ensure the installation stability of the projector target during use. Attached Figure Description

[0036] Figure 1 This is a three-dimensional structural diagram of an activated projection target provided by this utility model;

[0037] Figure 2 This is a three-dimensional structural diagram of the sleeve, the first set screw, and the projector target provided by this utility model;

[0038] Figure 3This is a three-dimensional sectional view of the sleeve, rubber ring, and connecting rod provided by this utility model;

[0039] Figure 4 This is a three-dimensional sectional view of another sleeve, second telescopic sleeve and connecting rod provided by this utility model;

[0040] Figure 5 This is a three-dimensional cross-sectional view of the first telescopic sleeve, the second set screw, and the rubber ring provided by this utility model;

[0041] Figure 6 This is an exploded view of the connecting seat, screw, and first guide rod provided by this utility model;

[0042] Figure 7 This is a three-dimensional sectional view of the mounting base, slider, and protective plate provided by this utility model;

[0043] Figure 8 This is a three-dimensional cross-sectional view of the protective plate, the second guide rod, and the protective cover provided by this utility model;

[0044] In the diagram: 1. Workpiece; 2. Sleeve; 3. First telescopic sleeve; 4. First set screw; 5. Second telescopic sleeve; 6. Second set screw; 7. Telescopic rod; 8. Third set screw; 9. Rubber ring; 10. Connecting rod; 11. Connecting seat; 12. Screw; 13. Mounting seat; 14. Projector target; 15. Knob; 16. Guide seat; 17. First guide rod; 18. Slide groove; 19. Slider; 20. First elastic element; 21. Guide block; 22. Protective plate; 23. Guide groove; 24. Second guide rod; 25. Second elastic element; 26. Protective cover; 27. First magnet; 28. Second magnet. Detailed Implementation

[0045] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0046] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0048] To overcome the challenges posed by the numerous rail transit vehicle projects with varying underframe dimensions and diverse process holes for target insertion, while the target dimensions and models are relatively uniform, it is difficult to adapt the target installation to different vehicle underframe models, posing a significant challenge to target installation. (See [link to relevant documentation]). Figures 1 to 6 This utility model introduces a laser projection target device suitable for chassis frames of different sizes on rail vehicles, comprising:

[0049] Workpiece 1 has multiple mounting holes on it;

[0050] Sleeve 2 is nested in the mounting hole of workpiece 1, and one end of it is slidably connected to workpiece 1;

[0051] The first telescopic sleeve 3 is nested inside the sleeve 2 and is slidably connected to the first telescopic sleeve 3;

[0052] The first set screw 4 is threaded through the side wall of the sleeve 2 and abuts against the outer wall of the first telescopic sleeve 3;

[0053] The second telescopic sleeve 5 is nested inside the first telescopic sleeve 3 and is slidably connected to the second telescopic sleeve 5;

[0054] The second set screw 6 is threaded through the side wall of the first telescopic sleeve 3 and abuts against the outer wall of the second telescopic sleeve 5.

[0055] The telescopic rod 7 is nested inside the second telescopic sleeve 5 and is slidably connected to the telescopic rod 7;

[0056] The third set screw 8 is threaded through the side wall of the second telescopic sleeve 5 and abuts against the outer wall of the telescopic rod 7;

[0057] Connecting rod 10, one end of which is fixedly connected to the other end of sleeve 2;

[0058] Connecting seat 11 is fixedly mounted on the other end of connecting rod 10;

[0059] Screw 12 rotates through connecting seat 11;

[0060] Mounting base 13 is threadedly connected to screw 12;

[0061] The projector target 14 is mounted on the mounting base 13.

[0062] By screwing the first set screw 4, the second set screw 6, and the third set screw 8, the extension and retraction states of the first telescopic sleeve 3, the second telescopic sleeve 5, and the telescopic rod 7 can be locked, so that the sleeve 2, the first telescopic sleeve 3, the second telescopic sleeve 5, and the telescopic rod 7 form a pagoda-shaped structure to accommodate mounting holes of different diameters. Furthermore, by rotating the screw 12, the mounting base 13 can be driven to rise and fall, thereby achieving precise height adjustment of the projector target 14. Example 2

[0063] Based on Example 1, see Figure 2 and Figure 6 A connecting rod 10 is fixedly connected to the top of the sleeve 2 by welding. A connecting seat 11 is fixedly connected to the end of the connecting rod 10 away from the sleeve 2 by welding. Guide seats 16 are fixedly connected to the left and right sides of the connecting seat 11 by welding. A first guide rod 17 is fixedly connected to the left and right sides of the mounting seat 13 by welding. The first guide rod 17 is slidably connected to the guide seat 16.

[0064] In a further embodiment of this utility model, a knob 15 is fixedly connected to one end of the screw 12 near the connecting seat 11. The knob 15 is provided with a plurality of grooves 18 evenly spaced along the circumference. At least two sliders 19 are slidably arranged in the grooves 18. In this embodiment, the number of sliders 19 is set to two, and a projector target 14 is installed between the two sliders 19.

[0065] After the projector target 14 is fixed on the workpiece 1, the knob 15 is turned, which drives the screw 12 to rotate. The screw 12 then drives the mounting base 13 to move up, down, left, and right under the guidance of the guide seat 16 and the first guide rod 17, thereby adjusting the height of the projector target to meet the installation requirements of different vehicle models.

[0066] See Figure 7 and Figure 8 The slider 19 is elastically connected to the mounting base 13 via the first elastic element 20. A guide block 21 is fixedly connected to the side of the slider 19 that is far apart from each other. At least two protective plates 22 are slidably arranged on the guide block 21. In this embodiment, the number of protective plates 22 is set to two. Multiple guide grooves 23 are opened on the side of the upper part of the protective plates 22 that is close to each other. A second guide rod 24 is arranged between the two protective plates 22. The second guide rod 24 passes through the corresponding guide grooves 23 on the two protective plates 22 and slides with the guide grooves 23.

[0067] In a further embodiment of the present invention, the second guide rod 24 is elastically connected to the protective plate 22 through the second elastic member 25, and a protective cover 26 is sleeved between the protective plates 22, covering the second guide rod 24 and the second elastic member 25.

[0068] When the projector target 14 is fixed on the workpiece 1, and the projector target 14 is impacted from the left and right sides, the protective plate 22 is squeezed and slides inward along the guide block 21. The guide groove 23 and the second guide rod 24 cooperate to guide the protective plate 22. The protective plate 22 squeezes the second elastic element 25 and deforms, thereby resisting the impact from the left and right sides. When the impact from the left and right sides disappears, the second elastic element 25 returns to its original shape and drives the protective plate 22 to slide back to the sides. When the projector target 14 is impacted from the top and bottom, the protective plate 22 is squeezed and drives the guide block 21 and the slider 19 to slide downward. The slider 19 squeezes the first elastic element 20 and deforms, thereby resisting the impact from the top and bottom sides, so as to ensure the installation stability of the projector target 14 during use.

[0069] See Figures 3 to 5 A first magnet 27 is installed on the lower inner side of the sleeve 2, the first telescopic sleeve 3, and the second telescopic sleeve 5. A second magnet 28 is installed on the upper outer side of the first telescopic sleeve 3, the second telescopic sleeve 5, and the telescopic rod 7. The first magnet 27 and the second magnet 28 attract each other.

[0070] When the first telescopic sleeve 3 is slid outward, the first telescopic sleeve 3 drives the second magnet 28 to slide outward and contact the first magnet 27, so that the second magnet 28 and the first magnet 27 come into contact and attract each other, thereby fixing the first telescopic sleeve 3 and the sleeve 2 in the extended state and preventing the projector target 14 from retracting after installation.

[0071] In a further embodiment of this utility model, rubber rings 9 are installed on the outside of the sleeve 2, the first telescopic sleeve 3, the second telescopic sleeve 5 and the telescopic rod 7 to increase the friction between the sleeve 2 and the mounting hole of the workpiece 1.

[0072] Working principle: When installing the projector target 14, first insert the sleeve 2 into the mounting hole of the workpiece 1. The rubber ring 9 fills the gap between the mounting hole of the workpiece 1 and the outside of the sleeve 2, thereby increasing the friction between the sleeve 2 and the mounting hole of the workpiece 1, so that the sleeve 2 is firmly fixed on the workpiece 1. When the mounting hole matches the first telescopic sleeve 3, use a hex wrench to turn the first set screw 4, so that the first set screw 4 loosens the sleeve 2 and the first telescopic sleeve 3. Then slide the first telescopic sleeve 3 outward, and then insert the first telescopic sleeve 3 into the mounting hole of the workpiece 1. Through the above steps, the second telescopic sleeve 5 and the telescopic rod 7 are slid out. The sleeve 2, the first telescopic sleeve 3, the second telescopic sleeve 5 and the telescopic rod 7 are extended to form a pagoda shape, so that the projector target 14 can be fixed on the mounting holes of workpieces 1 of different sizes, thus making it convenient to install the projector target 14 on vehicle workpieces 1 of different sizes.

[0073] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A laser projection target suitable for chassis frames of different sizes on rail vehicles, characterized in that, include: The workpiece (1) has multiple mounting holes. The sleeve (2) is nested in the mounting hole of the workpiece (1), and one end of it is slidably connected to the workpiece (1); The first telescopic sleeve (3) is nested inside the sleeve (2) and is slidably connected to the sleeve (2); The first set screw (4) passes through the side wall of the sleeve (2) and abuts against the outer wall of the first telescopic sleeve (3); The second telescopic sleeve (5) is nested inside the first telescopic sleeve (3) and is slidably connected to the first telescopic sleeve (3); The second set screw (6) passes through the side wall of the first telescopic sleeve (3) and abuts against the outer wall of the second telescopic sleeve (5); The telescopic rod (7) is nested inside the second telescopic sleeve (5) and is slidably connected to the second telescopic sleeve (5); The third set screw (8) passes through the side wall of the second telescopic sleeve (5) and abuts against the outer wall of the telescopic rod (7); A connecting rod (10) is fixedly connected at one end to the other end of the sleeve (2); A connecting seat (11) is fixedly disposed at the other end of the connecting rod (10); The screw (12) rotates through the connecting seat (11); Mounting base (13) is threadedly connected to the screw (12); The projector target (14) is mounted on the mounting base (13).

2. The laser projection target device applicable to the chassis of different parts of rail vehicles according to claim 1, characterized in that, A connecting rod (10) is welded to the top of the sleeve (2), and a connecting seat (11) is welded to the end of the connecting rod (10) away from the sleeve (2).

3. The laser projection target device applicable to the chassis of different parts of rail vehicles according to claim 2, characterized in that, The connecting seat (11) has guide seats (16) welded on both sides, and the mounting seat (13) has first guide rods (17) welded on both sides. The first guide rods (17) are slidably connected to the guide seats (16).

4. The laser projection target device for chassis of different component sizes in rail vehicles according to claim 1, characterized in that, A knob (15) is fixedly connected to one end of the screw (12) near the connecting seat (11).

5. The laser projection target device for chassis of different component sizes in rail vehicles according to claim 4, characterized in that, The knob (15) is provided with a plurality of grooves (18) evenly spaced along the circumference. At least two sliders (19) are slidably arranged in the grooves (18), and a projector target (14) is installed between the sliders (19).

6. The laser projection target device for chassis of different component sizes in rail vehicles according to claim 5, characterized in that, The slider (19) is elastically connected to the mounting base (13) through the first elastic element (20), and a guide block (21) is fixedly connected to the side of the slider (19) that is far away from each other.

7. The laser projection target device for chassis of different component sizes in rail vehicles according to claim 6, characterized in that, At least two protective plates (22) are slidably disposed on the guide block (21). Multiple guide grooves (23) are opened on the upper side of the protective plates (22) that are close to each other. A second guide rod (24) is disposed between the protective plates (22). The second guide rod (24) passes through the corresponding guide groove (23) on the protective plate (22) and slides with the guide groove (23). The second guide rod (24) is elastically connected to the protective plate (22) through the second elastic element (25).

8. The laser projection target device for chassis of different component sizes in rail vehicles according to claim 7, characterized in that, A protective cover (26) is provided between the protective plates (22), and the protective cover (26) covers the second guide rod (24) and the second elastic element (25).

9. The laser projection target device for chassis of different component sizes in rail vehicles according to claim 1, characterized in that, A first magnet (27) is installed on the lower inner side of the sleeve (2), the first telescopic sleeve (3), and the second telescopic sleeve (5), and a second magnet (28) is installed on the upper outer side of the first telescopic sleeve (3), the second telescopic sleeve (5), and the telescopic rod (7). The first magnet (27) and the second magnet (28) attract each other.

10. The laser projection target device for chassis of different component sizes of rail vehicles according to claim 8, characterized in that, Rubber rings (9) are installed on the outside of the sleeve (2), the first telescopic sleeve (3), the second telescopic sleeve (5) and the telescopic rod (7).

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