A multi-stage nested lifting device

Abstract

The utility model belongs to lifting device technical field discloses a kind of multistage nested lifting device.Multistage nested lifting device includes connecting assembly and lifting mechanism, connecting assembly includes top connecting piece and bottom connecting piece, top connecting piece is connected with mechanical arm, and bottom connecting piece is fixedly connected in motor car inspection robot;Lifting mechanism includes driving part and two lifting assemblies, and two lifting assemblies and driving part are fixedly connected in bottom connecting piece, and the end of lifting assembly away from bottom connecting piece is connected in top connecting piece, and each lifting assembly includes at least two sleeve, which are sequentially sleeved, and driving part is configured to drive two lifting assemblies to lift synchronously.The multistage nested lifting device provided by the utility model improves the operating range of the mechanical arm and the stability during the lifting process of the mechanical arm, ensures the shooting quality, and thus improves the maintenance efficiency of the motor car.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, and in particular to a multi-level nested lifting device. Background Technology

[0002] In the routine maintenance of high-speed trains, photographing and recording the exterior and key components is a crucial step in ensuring safe operation. By capturing high-definition images, maintenance personnel can inspect the train body for scratches, deformations, loose or missing parts, and other abnormalities, allowing for timely troubleshooting and improved safety. Currently, this photographic work is primarily done manually. Maintenance personnel must move around the train while it is stopped, holding a camera and taking pictures of different parts one by one. Manual shooting is prone to blurry images due to shaky hands, requiring reshoots, resulting in low efficiency and increased workload for maintenance personnel, making it difficult to meet the demands of large-scale, high-efficiency maintenance.

[0003] To address the drawbacks of manual photography, existing technologies are increasingly employing robotic arms equipped with imaging devices for automated photography. However, when used alone, the robotic arm's lifting height is limited by its length, making it difficult to cover the entire area of ​​the train from the roof to the floor. This results in some critical parts not being fully photographed, affecting the comprehensiveness of maintenance. While lifting devices can be used to increase the robotic arm's working range, existing lifting devices have poor compatibility with robotic arms. Furthermore, most of these lifting devices have limited lifting strokes, still insufficient to meet the photographing requirements of high-speed trains, and are prone to swaying and shifting during lifting, resulting in poor stability and consequently affecting the clarity of the captured images. Utility Model Content

[0004] The purpose of this invention is to provide a multi-level nested lifting device to improve the lifting height and the stability of the robotic arm during the lifting process.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A multi-level nested lifting device is installed on a high-speed train inspection robot and is equipped with a robotic arm. The robotic arm is connected to a camera for photographing the high-speed train to inspect its condition. The multi-level nested lifting device includes:

[0007] The connecting assembly includes a top connector and a bottom connector, the top surface of which is connected to the robotic arm, and the bottom connector is fixedly connected to the EMU inspection robot.

[0008] The lifting mechanism includes a drive member and two lifting components. Both the lifting components and the drive member are fixedly connected to the bottom connector. One end of the lifting component away from the bottom connector is connected to the top connector. The two lifting components are symmetrically arranged on both sides of the drive member. Each lifting component includes at least two sleeves that are sequentially nested together. The inner sleeve is movable relative to the outer sleeve adjacent to it. The drive member is configured to drive the two lifting components to lift synchronously.

[0009] In the aforementioned multi-level nested lifting device, each lifting component includes three sleeves that are nested together in sequence. The outermost sleeve is the first sleeve, the middle sleeve is the second sleeve, and the innermost sleeve is the third sleeve. The first sleeve is fixedly connected to the bottom connector, and the third sleeve is fixedly connected to the top connector.

[0010] In the aforementioned multi-level nested lifting device, the driving component includes a first cylinder, a second cylinder, and a push rod. The first cylinder is fixedly connected to the bottom connector, the second cylinder is slidably connected to the interior of the first cylinder, the push rod is slidably connected to the interior of the second cylinder, the push rod is fixedly connected to the top connector, and the second cylinder is fixedly connected to the second sleeve.

[0011] The aforementioned multi-stage nested lifting device further includes a connecting plate and two connecting plates. The connecting plate is sleeved on the outer surface of the second cylinder. The two connecting plates are connected to both sides of the connecting plate along the radial direction of the connecting plate. One of the connecting plates is fixedly connected to the second sleeve in one of the lifting components, and the other connecting plate is fixedly connected to the second sleeve in another lifting component.

[0012] In the aforementioned multi-level nested lifting device, the cross-section of the sleeve in the lifting assembly is rectangular.

[0013] In the aforementioned multi-level nested lifting device, each edge of the sleeve is provided with a chamfer, and the chamfer is continuously distributed along the length direction of the edge.

[0014] The aforementioned multi-level nested lifting device further includes a connecting vertical plate and a connecting strip. The connecting vertical plate can be fixedly connected to the connecting strip to clamp the outermost sleeve of the two lifting components.

[0015] In the aforementioned multi-level nested lifting device, the connecting vertical plate is provided with a connecting through hole, and the two ends of the connecting strip are provided with connecting threaded holes, which can be aligned with the connecting through hole.

[0016] In the aforementioned multi-level nested lifting device, the top of the connecting vertical plate is flush with the top of the outermost sleeve of the two lifting components.

[0017] The aforementioned multi-level nested lifting device further includes multiple triangular reinforcing ribs, which are fixedly connected to the bottom connector. Both lifting components are connected to the reinforcing ribs, and the multiple reinforcing ribs are spaced apart along the arrangement direction of the two lifting components.

[0018] The beneficial effects of this utility model are:

[0019] The multi-level nested lifting device provided by this utility model allows for easy connection of the bottom connecting piece to the high-speed train inspection robot via bolts. The driving component drives two lifting components to rise and fall synchronously. Since the two lifting components are symmetrically arranged on both sides of the driving component, the driving component and the two lifting components simultaneously support the top connecting piece, improving the stability of the top connecting piece during lifting and thus enhancing the stability of the robotic arm connected to it, ensuring high-quality images. Simultaneously, each lifting component includes at least two sequentially nested sleeves, increasing the lifting height and expanding the robotic arm's working range to capture images of the entire area of ​​the high-speed train from the roof to the floor, meeting all shooting requirements. This multi-level nested lifting device improves the robotic arm's working range and stability during lifting and lowering, ensuring high-quality images and ultimately improving the efficiency of high-speed train maintenance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cooperation between the multi-level nested lifting device and the robotic arm provided in this embodiment of the utility model from a first-view perspective;

[0021] Figure 2 This is a schematic diagram of the cooperation between the multi-level nested lifting device and the robotic arm provided in this embodiment of the utility model from a second perspective;

[0022] Figure 3 This is a first structural schematic diagram of the multi-level nested lifting device provided in this embodiment of the present invention in its extended state;

[0023] Figure 4 This is a second structural schematic diagram of the multi-level nested lifting device provided in this embodiment of the present invention in its extended state;

[0024] Figure 5 This is a schematic diagram of the multi-level nested lifting device provided in this embodiment of the present invention under compressed conditions;

[0025] Figure 6 This is a schematic diagram showing the cooperation between the second cylinder and the second sleeve provided in this embodiment of the utility model.

[0026] In the picture:

[0027] 1. Connecting component; 11. Top connector; 12. Bottom connector;

[0028] 2. Lifting mechanism; 21. Driving component; 211. First cylinder; 212. Second cylinder; 213. Push rod; 22. Lifting assembly; 221. First sleeve; 222. Second sleeve; 223. Third sleeve;

[0029] 3. Connecting plate; 4. Connecting plate;

[0030] 5. Connecting vertical plate; 6. Connecting strip;

[0031] 7. Reinforce the ribs;

[0032] 8. Mounting plate;

[0033] 100. Robotic arm. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] The multi-level nested lifting device provided by this utility model increases the working range of the robotic arm, improves the stability of the robotic arm during the lifting process to improve the shooting quality, and thus improves the maintenance efficiency of the EMU.

[0039] like Figures 1 to 6 As shown, a multi-level nested lifting device is installed on a high-speed train inspection robot and is equipped with a robotic arm 100. The robotic arm 100 is connected to a camera, which is used to photograph the high-speed train to inspect its condition. The multi-level nested lifting device includes a connecting component 1 and a lifting mechanism 2. The connecting component 1 includes a top connecting member 11 and a bottom connecting member 12. The top surface of the top connecting member 11 is connected to the robotic arm 100, and the bottom connecting member 12 is fixedly connected to the high-speed train inspection robot. The lifting mechanism 2 includes a driving member 21 and two lifting components 22. Both the lifting components 22 and the driving member 21 are fixedly connected to the bottom connecting member 12. The end of the lifting component 22 away from the bottom connecting member 12 is connected to the top connecting member 11. The two lifting components 22 are symmetrically arranged on both sides of the driving member 21. Each lifting component 22 includes at least two sleeves that are nested in sequence, and the inner sleeve can move relative to the adjacent outer sleeve. The driving member 21 is configured to drive the two lifting components 22 to lift synchronously.

[0040] The multi-level nested lifting device provided by this utility model allows the bottom connecting piece 12 to be easily connected to the EMU inspection robot via bolts. The driving component 21 drives two lifting components 22 to rise and fall synchronously. Since the two lifting components 22 are symmetrically arranged on both sides of the driving component 21, the driving component 21 and the two lifting components 22 simultaneously support the top connecting piece 11, improving the stability of the top connecting piece 11 during lifting, and consequently improving the stability of the robotic arm 100 connected to the top connecting piece 11, ensuring the quality of the photographs. Simultaneously, each lifting component 22 includes at least two sequentially nested sleeves, which can increase the lifting height and expand the working range of the robotic arm 100, allowing for the photographing of the entire area of ​​the EMU from the roof to the bottom, meeting the photographing requirements. The multi-level nested lifting device provided by this utility model improves the working range of the robotic arm 100 and its stability during lifting, ensuring photographic quality and thus improving the efficiency of EMU maintenance.

[0041] This embodiment does not specifically limit the shape of the top connector 11 and the bottom connector 12. For example, both the top connector 11 and the bottom connector 12 are plate-shaped. The top connector 11 is connected to the robotic arm 100 by existing bolts, and the bottom connector 12 is connected to the EMU inspection robot by existing bolts.

[0042] It should be noted that the top connector 11 has a pre-machined through hole that matches the bolt holes at the bottom of the robotic arm 100, and the bottom connector 12 has a pre-machined through hole that matches the bolt holes at the top of the EMU inspection robot, to facilitate connection.

[0043] In other embodiments, the top connector 11 can be connected to the robotic arm 100 via existing pins, and the bottom connector 12 can be connected to the train inspection robot via existing pins.

[0044] In this embodiment, each lifting component 22 includes three sleeves that are connected in sequence. The outermost sleeve is the first sleeve 221, the middle sleeve is the second sleeve 222, and the innermost sleeve is the third sleeve 223. The first sleeve 221 is fixedly connected to the bottom connector 12, and the third sleeve 223 is fixedly connected to the top connector 11. The three sleeves connected in sequence further increase the lifting height of the lifting mechanism 2, ensuring that the robotic arm 100 can take pictures of the entire train.

[0045] In other embodiments, the lifting assembly 22 may include four sleeves that are nested together in sequence to further increase the lifting height of the lifting mechanism 2.

[0046] To improve the stability of the lifting process, in this embodiment, the drive component 21 includes a first cylinder 211, a second cylinder 212, and a push rod 213. The first cylinder 211 is fixedly connected to the bottom connector 12, the second cylinder 212 is slidably connected to the inside of the first cylinder 211, the push rod 213 is slidably connected to the inside of the second cylinder 212, the push rod 213 is fixedly connected to the top connector 11, and the second cylinder 212 is fixedly connected to the second sleeve 222. The drive component 21 and the two lifting components 22 move synchronously, thereby improving the stability of the lifting process.

[0047] Optionally, the drive component 21 is a three-stage hydraulic cylinder with high driving force. During operation, hydraulic fluid enters the first cylinder 211, pushing the second cylinder 212 upwards. The second cylinder 212 then drives the second sleeve 222 in the lifting assembly 22 upwards, and the first sleeve 221 in the lifting assembly 22 rises along with the second sleeve 222, improving movement stability. Hydraulic fluid also enters the second cylinder 212, pushing the push rod 213 upwards. The push rod 213 is fixedly connected to the top connecting member 11, driving the top connecting member 11 upwards. Simultaneously, the top connecting member 11 is connected to the third sleeve 223 in the lifting assembly 22. Therefore, when the drive component 21 rises, the two lifting assemblies 22 move synchronously, improving the stability of the lifting process.

[0048] Meanwhile, the sleeve-connected lifting method can reduce the lifting amplitude of a single sleeve, avoid excessive lifting height of a single sleeve causing swaying, and improve the stability of the robotic arm 100 during the lifting process.

[0049] Furthermore, the sleeve in the lifting assembly 22 has a rectangular cross-section. During the lifting process of the rectangular sleeve, the outer sleeve has a limiting effect on the inner sleeve, preventing the sleeve from twisting during the lifting process and improving the stability of the lifting process.

[0050] Specifically, see Figure 3 Each edge of the sleeve is chamfered, with the chamfers continuously distributed along the length of the edge. This chamfering ensures a smooth transition on the outer surface of the sleeve, disperses stress concentration, and improves the overall structural strength of the sleeve. Simultaneously, it prevents workers from being scratched during handling, thus enhancing safety.

[0051] In other embodiments, each edge of the sleeve may be provided with rounded corners, which are continuously distributed along the length of the edge.

[0052] The lifting assembly 22 and the drive component 21 can be connected by bolts or pins. See, for example... Figures 3 to 6 The multi-stage nested lifting device also includes a connecting plate 3 and two connecting plates 4. The connecting plate 3 is sleeved on the outer surface of the second cylinder 212. The two connecting plates 4 are connected to both sides of the connecting plate 3 along the radial direction of the connecting plate 3. One connecting plate 4 is fixedly connected to the second sleeve 222 in one of the lifting components 22, and the other connecting plate 4 is fixedly connected to the second sleeve 222 in another lifting component 22. The connecting plate 3 and the connecting plates 4 rigidly connect the driving component 21 and the two lifting components 22 to avoid the device from shaking due to uneven force or asynchronous driving, thereby improving the lifting stability.

[0053] To further enhance the overall strength of the lifting mechanism 2, in this embodiment, the multi-level nested lifting device also includes a connecting vertical plate 5 and a connecting strip 6. The connecting vertical plate 5 can be fixedly connected to the connecting strip 6 to clamp the outermost sleeve of the two lifting components 22. The connecting vertical plate 5 and the connecting strip 6 make the first sleeve 221 of the two lifting components 22 form a rigid connection, thereby improving the overall stability.

[0054] For a nested structure, the stability of the outer sleeve determines the movement accuracy of the inner sleeve. The connecting vertical plate 5 and the connecting strip 6 form a rigid connection between the first sleeves 221 of the two lifting components 22, enabling the two first sleeves 221 to move synchronously and reduce errors. The connecting vertical plate 5 and the connecting strip 6 ensure the synchronicity of the first sleeves 221 of the two lifting components 22. At the same time, the combination of the connecting plate 3 and the two connecting plates 4 ensures the synchronicity of the second sleeves 222 of the two lifting components 22, further improving the stability of the lifting process.

[0055] Specifically, the connecting vertical plate 5 is provided with a connecting through hole, and the two ends of the connecting strip 6 are provided with connecting threaded holes. The connecting threaded holes can be aligned with the connecting through hole, facilitating connection and fixation with existing bolts. Bolt connection is convenient and disassembly is easy.

[0056] During connection, one end of the connecting strip 6 is fixed to the connecting vertical plate 5 by existing bolts, and adjusted to a suitable position in the first sleeve 221 of the lifting assembly 22. The other end of the connecting strip 6 and another connecting vertical plate 5 are fixed, and the bolts are tightened so that the two connecting vertical plates 5 clamp the first sleeve 221.

[0057] Furthermore, the top of the connecting vertical plate 5 is flush with the top of the outermost sleeve of the two lifting components 22, so as to prevent the top connector 11 from colliding with the top edge of the first sleeve 221 and causing it to bend, and will not affect the movement accuracy of the second sleeve 222, ensuring that the inner sleeve can slide smoothly inside the outer sleeve.

[0058] To further improve stability, the multi-stage nested lifting device also includes multiple triangular reinforcing ribs 7, which are fixedly connected to the bottom connector 12. Both lifting components 22 are connected to reinforcing ribs 7, and the multiple reinforcing ribs 7 are spaced apart along the arrangement direction of the two lifting components 22. The reinforcing ribs 7 make the two lifting components 22 and the bottom connector 12 rigidly connected, further improving the stability of the lifting mechanism 2.

[0059] Multiple reinforcing ribs 7 can evenly bear the vibration and impact transmitted from the bottom connector 12, avoiding damage to a single reinforcing rib 7 due to excessive force, and improving the service life of the reinforcing rib 7.

[0060] Optionally, see Figure 3 and Figure 4 The multi-stage nested lifting device also includes a mounting plate 8. The mounting plate 8 is connected to the first sleeve 221 in the lifting assembly 22 by existing bolts. The reinforcing rib 7 is fixedly connected to the mounting plate 8. The mounting plate 8 can absorb some vibration and impact, reduce the direct external force acting on the first sleeve 221, prevent the first sleeve 221 from being deformed by impact, ensure that the second sleeve 222 slides smoothly inside the first sleeve 221, and improve the stability of the lifting mechanism 2 during the lifting process.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A multi-level nested lifting device, installed on a high-speed train inspection robot, and equipped with a robotic arm (100), wherein the robotic arm (100) is connected to a camera, the camera being used to photograph the high-speed train to inspect its condition, characterized in that, The multi-level nested lifting device includes: The connecting component (1) includes a top connector (11) and a bottom connector (12). The top surface of the top connector (11) is connected to the robotic arm (100), and the bottom connector (12) is fixedly connected to the EMU inspection robot. The lifting mechanism (2) includes a drive member (21) and two lifting components (22). The lifting components (22) and the drive member (21) are both fixedly connected to the bottom connector (12). One end of the lifting component (22) away from the bottom connector (12) is connected to the top connector (11). The two lifting components (22) are symmetrically arranged on both sides of the drive member (21). Each lifting component (22) includes at least two sleeves that are sequentially nested together. The inner sleeve can move relative to the outer sleeve adjacent to it. The drive member (21) is configured to drive the two lifting components (22) to lift synchronously. Each of the lifting components (22) includes three sleeves that are connected in sequence. The outermost sleeve is the first sleeve (221), the middle sleeve is the second sleeve (222), and the innermost sleeve is the third sleeve (223). The first sleeve (221) is fixedly connected to the bottom connector (12), and the third sleeve (223) is fixedly connected to the top connector (11). The drive unit (21) includes a first cylinder (211), a second cylinder (212), and a push rod (213). The first cylinder (211) is fixedly connected to the bottom connector (12). The second cylinder (212) is slidably connected to the inside of the first cylinder (211). The push rod (213) is slidably connected to the inside of the second cylinder (212). The push rod (213) is fixedly connected to the top connector (11). The second cylinder (212) is fixedly connected to the second sleeve (222).

2. The multi-level nested lifting device according to claim 1, characterized in that, The multi-level nested lifting device further includes a connecting plate (3) and two connecting plates (4). The connecting plate (3) is sleeved on the outer surface of the second cylinder (212). The two connecting plates (4) are connected to both sides of the connecting plate (3) along the radial direction of the connecting plate (3). One of the connecting plates (4) is fixedly connected to the second sleeve (222) in one of the lifting components (22), and the other connecting plate (4) is fixedly connected to the second sleeve (222) in the other lifting component (22).

3. The multi-level nested lifting device according to claim 1, characterized in that, The sleeve in the lifting assembly (22) has a rectangular cross-section.

4. The multi-stage nested lifting device according to claim 3, characterized in that, Each edge of the sleeve is chamfered, and the chamfers are continuously distributed along the length of the edge.

5. The multi-level nested lifting device according to claim 1, characterized in that, The multi-level nested lifting device also includes a connecting vertical plate (5) and a connecting strip (6), wherein the connecting vertical plate (5) can be fixedly connected to the connecting strip (6) to clamp the outermost sleeve of the two lifting components (22).

6. The multi-level nested lifting device according to claim 5, characterized in that, The connecting vertical plate (5) is provided with a connecting through hole, and the two ends of the connecting strip (6) are provided with connecting threaded holes, which can be aligned with the connecting through hole.

7. The multi-stage nested lifting device according to claim 5, characterized in that, The top of the connecting vertical plate (5) is flush with the top of the outermost sleeve of the two lifting components (22).

8. The multi-stage nested lifting device according to any one of claims 1-7, characterized in that, The multi-level nested lifting device also includes multiple triangular reinforcing ribs (7), which are fixedly connected to the bottom connector (12). Both lifting components (22) are connected to the reinforcing ribs (7), and the multiple reinforcing ribs (7) are spaced apart along the arrangement direction of the two lifting components (22).

Images