Conveying device convenient for paving curbs

By combining a transport vehicle, a rotating platform, a lifting platform, a suction cup assembly, and a discharge plate, the problem of multi-point paving of curb stones is solved, enabling rapid and automated unloading and arrangement of curb stones, and improving paving efficiency.

CN224061022UActive Publication Date: 2026-03-31TIANYUAN CONSTR GROUP +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-20
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

The existing curbstone transport vehicles are insufficient to meet the needs of multi-point paving, and occupy the transport vehicles for a long time, resulting in low efficiency.

Method used

The device includes a transport vehicle, a rotating platform, a lifting platform, a suction cup assembly, and a discharge tray. A forklift is used to stack the curb stones on the rotating platform, and the suction cup assembly and rotating rollers are used to achieve automated unloading and arrangement of the curb stones, reducing the time the transport vehicle occupies.

Benefits of technology

It enables rapid, multi-point laying of curb stones, reduces the time spent by transport vehicles, and improves laying efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of road and bridge construction, and discloses a conveying device facilitating kerb laying. The conveying device comprises a carrying cart, a rotating table, a lifting table, a suction cup assembly and a discharging disc. The rotating table is rotationally connected with the carrying cart and is used for stacking curbs; the lifting table is movably arranged on the carrier loader and located on one side of the rotating table, a rotating roller is rotationally arranged on the lifting table, and a lifting hole is formed in the lifting table; the suction cup assembly is movably arranged in a lifting hole of the lifting table and used for pulling the curb to the lifting table. The discharging disc is obliquely arranged on the carrier loader; and the rotating roller rotates to push the curbs on the lifting table to the discharging disc. According to the invention, the occupied time of a carrier loader is reduced, and the requirement of multi-point curb laying is met.
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Description

Technical Field

[0001] This application relates to the field of road and bridge construction technology, for example to a conveying device that facilitates the laying of curb stones. Background Technology

[0002] Currently, curb stones are marker stones placed between the road surface and other structures. Curb stones are generally required between the median strip and the road surface in urban roads, and between the sidewalk and the road surface. They are also commonly found at the edges of the central median strip, the right edge of the driving lane, or the outer edge of the shoulder on highways. However, curb stones are relatively heavy, making it inefficient for workers to carry and lay them.

[0003] One related technology includes a curbstone transport vehicle, comprising a vehicle body, wheels, and handles. The wheels are rotatably connected to the vehicle body, and the handles are fixedly connected to the vehicle body. Curbstones are stacked on the vehicle body, making it convenient to directly retrieve them when paving curbstones is required. Furthermore, the handles allow the vehicle to be pulled along with the curbstones, resulting in relatively high transport efficiency.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] The curb stones are fixed on the vehicle body, which requires the transport vehicle to be occupied at all times, making it difficult to meet the demand for multi-point laying of curb stones.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a transportation device that facilitates the laying of curb stones, thereby reducing the time occupied by the transport vehicle and meeting the needs of laying curb stones at multiple locations.

[0009] In some embodiments, the conveying device for facilitating curbstone laying includes: a carrier vehicle, a rotating platform, a lifting platform, a suction cup assembly, and a discharge tray. The rotating platform is rotatably connected to the carrier vehicle and is used to stack curbstones; the lifting platform is movably mounted on the carrier vehicle and located on one side of the rotating platform, with a rotating roller rotatably mounted on the lifting platform and a lifting hole provided on the lifting platform; the suction cup assembly is movably mounted in the lifting hole of the lifting platform and is used to pull the curbstones onto the lifting platform; the discharge tray is tilted on the carrier vehicle; wherein, the rotation of the rotating roller can push the curbstones on the lifting platform onto the discharge tray.

[0010] Optionally, the suction cup assembly includes: a movable box and an electric suction cup. One side wall of the movable box is open and is slidably disposed within the lifting hole; the electric suction cup is slidably connected to the movable box and can slide out of the movable box along the open; wherein, after the movable box is lowered into position, its upper surface is flush with the upper surface of the lifting platform.

[0011] Optionally, two rotating rollers are provided, and they are respectively located on both sides of the lifting hole.

[0012] Optionally, the bottom of the lifting platform is provided with a stop block that can extend out of the lifting platform and abut against the curb on the rotating platform.

[0013] Optionally, the end of the discharge plate facing away from the lifting platform is provided with a discharge port, and the discharge plate is provided with a sliding groove. A push-pull plate is slidably provided in the sliding groove, and the push-pull plate is used to push the curb stone on the discharge plate toward the discharge port.

[0014] Optionally, a lead screw is rotatably provided inside the sliding groove, with both ends of the lead screw rotatably connected to the discharge disc, and the lead screw is threadedly connected to the push-pull plate.

[0015] Optionally, a guide plate is provided at the edge of the discharge port.

[0016] Optionally, the bottom of the rotating platform is provided with a gear ring, which is rotatably connected to the transport vehicle. The gear ring meshes with the first gear, which is connected to the output end of the first motor, and the first motor is connected to the transport vehicle.

[0017] The conveying device for facilitating curbstone laying provided in this embodiment achieves the following technical effects: A stack of curbstones can be placed on a rotating platform using a forklift or similar tool. A transport vehicle is then pulled to the curbstone laying location. The lifting platform rises until its upper sidewall is flush with or lower than the lower sidewall of the top curbstone. The rotating platform rotates so that the length of the top curbstone faces the lifting platform. A suction cup assembly rises from the lifting hole, sucks up the top curbstone, and pulls it onto the lifting platform until it contacts the rotating roller. The suction cup assembly then releases its grip on the curbstone and descends back into the lifting hole. The rotating roller rotates, moving the curbstone completely onto the lifting platform. The lifting platform then descends until its upper sidewall is slightly higher than the discharge tray. The rotating roller pushes the curbstone into the discharge tray, where it slides to the ground from the discharge port. Furthermore, the transport vehicles move synchronously, arranging the curb stones layer by layer on the ground, corresponding to multiple construction locations. This allows for timely unloading of the curb stones from the transport vehicles for the next load, reducing the time spent on the transport vehicles and meeting the needs of laying curb stones at multiple locations.

[0018] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0020] Figure 1 This is a schematic diagram of a conveying device for facilitating curbstone laying, provided in an embodiment of this disclosure.

[0021] Figure 2 This is a schematic diagram of a conveying device for facilitating curbstone laying, provided in an embodiment of this disclosure.

[0022] Figure 3 This is an exploded view of a suction cup assembly structure provided in an embodiment of this disclosure;

[0023] Figure 4 This is an exploded view of another suction cup assembly structure provided in this embodiment of the present disclosure;

[0024] Figure 5 This is a schematic diagram of the structure of a transport vehicle provided in an embodiment of this disclosure;

[0025] Figure 6 This is a schematic diagram of the structure of another transport vehicle provided in an embodiment of this disclosure.

[0026] Figure label:

[0027] 100. Transport vehicle; 110. Handle frame; 200. Rotary table; 210. Gear ring; 220. First gear; 230. First motor; 300. Lifting platform; 310. Rotating roller; 311. Third motor; 320. Lifting hole; 400. Suction cup assembly; 410. Moving box; 411. Opening; 420. Electric suction cup; 430. Guide frame; 440. Hydraulic cylinder; 450. Guide rod; 460. Second gear; 461. Second motor; 470. Protective plate; 480. Abutment block; 481. Electric push rod; 500. Discharge plate; 510. Discharge port; 520. Sliding groove; 530. Push-pull plate; 540. Lead screw; 541. Fourth motor; 550. Guide plate. Detailed Implementation

[0028] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure is described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in presentation to simplify the drawings. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of the embodiments of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the present disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. In the embodiments of this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily used to better describe the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationships; for example, the term "above" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0029] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0030] Unless otherwise stated, the term "multiple" means two or more.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0032] Combination Figure 1-2As shown in the figure, this embodiment of the present disclosure provides a conveying device for facilitating the laying of curb stones, comprising: a carrier 100, a rotating platform 200, a lifting platform 300, a suction cup assembly 400, and a discharge tray 500. The rotating platform 200 is rotatably connected to the carrier 100 and is used to stack curb stones; the lifting platform 300 is movably disposed on the carrier 100 and located on one side of the rotating platform 200, and a rotating roller 310 is rotatably disposed on the lifting platform 300, and a lifting hole 320 is provided on the lifting platform 300; the suction cup assembly 400 is movably disposed in the lifting hole 320 of the lifting platform 300 and is used to pull the curb stones onto the lifting platform 300; the discharge tray 500 is inclinedly disposed on the carrier 100; wherein, the rotation of the rotating roller 310 can push the curb stones on the lifting platform 300 onto the discharge tray 500.

[0033] Using the facilitating curbstone laying conveying device provided in this embodiment, stacks of curbstones can be placed on the rotating platform 200 using tools such as forklifts. The transport vehicle 100 is then pulled to the curbstone laying location, and the lifting platform 300 is raised until its upper sidewall is flush with or lower than the lower sidewall of the top curbstone. The rotating platform 200 rotates so that the length direction of the top curbstone faces the lifting platform 300. The suction cup assembly 400 rises from the lifting hole 320, sucks up the top curbstone, and pulls it onto the lifting platform 300 until the curbstone abuts against the rotating roller 310. The suction cup assembly 400 then releases its grip on the curbstone and descends back into the lifting hole 320. The rotating roller 310 rotates, causing the curbstone to move completely onto the lifting platform 300. The lifting platform 300 descends further until its upper sidewall is slightly higher than the discharge pan 500. The rotating roller 310 pushes the curbstone into the discharge pan 500, from where it slides to the ground through the discharge port 510. Simultaneously, the transport vehicle 100 moves synchronously, arranging the curbstones layer by layer on the ground, corresponding to multiple locations requiring construction. This allows for timely unloading of the curbstones from the transport vehicle 100 for the next load, reducing the time the transport vehicle 100 is occupied and meeting the needs of multi-point curbstone laying.

[0034] Understandably, curb stones are typically stacked in multiple layers during transportation, with multiple curb stones per layer. Furthermore, curb stones are usually rectangular, and adjacent layers are typically perpendicular in length. Understandably, the lifting platform 300 is a scissor lift platform 300, representing existing and conventional technology. Combined with... Figure 3 and Figure 4As shown, optionally, the suction cup assembly 400 includes: a movable box 410 and an electric suction cup 420. The electric suction cup 420 is a known mature technology product. In this specific embodiment, the electric suction cup 420 can be a Junduo EVS08 series suction cup. Since existing curb stones are usually made of marble, their sides are relatively smooth and flat. Therefore, it is understood that the electric suction cup 420 can achieve stable adsorption to the side wall of the curb stone. One side wall of the movable box 410 is an open opening 411, which is slidably disposed within the lifting hole 320. The electric suction cup 420 is slidably connected to the movable box 410 and can slide out of the movable box 410 along the open opening 411. The upper side wall of the movable box 410 can slide until it is flush with the upper side wall of the lifting platform 300. After the upper side wall of the movable box 410 is flush with the upper side wall of the lifting platform 300, the curb stone on the upper part of the lifting platform 300 can move smoothly under the rotation of the rotating roller 310. Thus, when it is necessary to pull the curbstone onto the lifting platform 300, the movable box 410 slides and rises within the lifting hole 320 until the opening 411 is higher than the upper side of the lifting platform 300. The electric suction cup 420 slides relative to the movable box 410 and extends from the opening 411 until its suction end abuts against the curbstone. The electric suction cup 420 then sucks up the curbstone and slides towards the movable box 410, pulling the curbstone onto the lifting platform 300 where it abuts against the rotating roller 310. The electric suction cup 420 releases the curbstone and slides into the movable box 410, which slides downward until its upper sidewall is flush with the upper sidewall of the lifting platform 300. The rotating roller 310 rotates, pushing the curbstone onto the lifting platform 300 through friction. Finally, the lifting platform 300 descends until its upper sidewall is slightly higher than the discharge plate 500. The rotating roller 310 then rotates, pushing the curbstone into the discharge plate 500, from where it slides to the ground through the discharge port 510. This automatically places the curbstone on the ground, reducing labor costs.

[0035] Specifically, the opening 411 is positioned facing the rotating platform 200.

[0036] Specifically, the opening direction of the lifting hole 320 is perpendicular to the opening direction of the opening 411.

[0037] Understandably, the electric suction cup 420 is a current and conventional technology. The electric suction cup 420 is equipped with multiple suction cups, which are used to hold the curbstone in place after it is pressed against the curbstone.

[0038] Optionally, the electric suction cup 420 is connected to the guide frame 430, and the guide frame 430 is slidably connected to the movable box 410. In this way, the guide frame 430 is slidably connected to the inner wall of the movable box 410, providing guidance and limiting for the electric suction cup 420 and reducing the risk of its sliding deviation.

[0039] Optionally, a hydraulic cylinder 440 is provided on one side of the guide frame 430. The output end of the hydraulic cylinder 440 is connected to the guide frame 430, and the other end of the hydraulic rod is connected to the inner wall of the movable box 410. In this way, the hydraulic cylinder 440 provides power for the guide frame 430 to slide within the movable box 410.

[0040] Understandably, hydraulic cylinder 440 is a three-section hydraulic cylinder.

[0041] Optionally, multiple electric suction cups 420 are provided. Since there are relatively many curb stones on each layer, having more electric suction cups 420 allows multiple curb stones to be pulled towards the lifting platform 300 at once, resulting in relatively high efficiency. Specifically, five electric suction cups 420 are provided. This allows multiple curb stones to be pulled towards the lifting platform 300 at once, resulting in relatively high efficiency.

[0042] Optionally, the bottom of the movable box 410 is fixedly provided with multiple guide rods 450, all of which are slidably connected to the inner side wall of the lifting hole 320. Two of the guide rods 450 are each provided with a second gear 460 on one side. The second gear 460 is rotatably connected to the lifting platform 300 and meshes with the corresponding two guide rods 450. The outer side wall of the movable box 410 is provided with toothed grooves that can mesh with the second gears 460. In this way, the multiple guide rods 450 provide guidance and limit for the sliding of the movable box 410 within the lifting hole 320, reducing the risk of the movable box 410 sliding off course. The second gear 460 rotates and engages with the corresponding guide rod 450 and tooth groove, causing the movable box 410 to slide within the movable hole. After the movable box 410 descends and moves into position, to facilitate the stable holding of the movable box 410, a groove can be provided at the upper part of each of the four top corners of the lifting hole 320. Limiting plates corresponding to the grooves are provided around the movable box 410. The upper surface of the limiting plate is flush with the upper surface of the movable box 410. After the movable box 410 descends and moves into position, the limiting plate is precisely locked in the corresponding groove. Therefore, the limiting plate can be used to achieve stable support for the movable box 410.

[0043] Specifically, there are four guide rods 450.

[0044] Specifically, each second gear 460 is connected to the output of a second motor 461, which is connected to the lifting platform 300. In this way, the second motor 461 provides power for the rotation of the second gear 460.

[0045] Optionally, two rotating rollers 310 are provided, respectively located on both sides of the lifting hole 320. In this way, the rotation of the rotating rollers 310 pushes the curbstone forward through friction. Having rotating rollers 310 on both sides of the lifting hole 320 facilitates the curbstone being pushed into or pushed out of the lifting platform 300, reducing the risk of the curbstone getting stuck. Optionally, one end of each rotating roller 310 is connected to the output of a third motor 311, which is connected to the lifting platform 300. Thus, the third motor 311 provides power for the rotation of the rotating roller 310. Optionally, the top of the rotating roller 310 is higher than the upper side wall of the lifting platform 300. This allows the rotating roller 310 to protrude from the upper side of the lifting platform 300, enabling it to abut against the lower side wall of the curbstone, resulting in a better effect of the rotating roller 310 pushing the curbstone.

[0046] Optionally, protective plates 470 are fixedly installed on both sides of the lifting platform 300. This reduces the risk of the rotating roller 310 falling off the lifting platform 300.

[0047] Optionally, the bottom of the lifting platform 300 is movably provided with an abutment block 480, which can extend out of the lifting platform 300 and abut against the curb on the rotating platform 200. In this way, the abutment block 480 can extend out of the lifting platform 300, so that the abutment block 480 abuts against the second-to-top curb on the rotating platform 200 and provides lateral support for it, reducing the risk of the second-to-top curb falling off.

[0048] Optionally, two abutment blocks 480 are provided, and one side of each abutment block 480 is connected to the output end of an electric push rod 481, which is connected to the lifting platform 300. In this way, the number of abutment blocks 480 is relatively large, and the abutment positions are relatively numerous, reducing the risk of the curb stone on the second-to-top layer falling off.

[0049] Combination Figure 5 As shown, optionally, the end of the discharge tray 500 facing away from the lifting platform 300 is provided with a discharge port 510. The discharge tray 500 is provided with a sliding groove 520, and a push-pull plate 530 is slidably disposed in the sliding groove 520. The push-pull plate 530 is used to push the curb stones on the discharge tray 500 toward the discharge port 510. In this way, the curb stones on the discharge tray 500 slide out of the discharge port 510, and only one curb stone can slide out of the discharge port 510 at a time. The push-pull plate 530 pushes and displaces the curb stones on the discharge tray 500, so that the curb stones on the discharge tray 500 move toward the discharge port 510 one by one and slide out of the discharge port 510 one by one. With the movement of the transport vehicle 100, the curb stones can be arranged and placed sequentially along the paved line, making construction more convenient and efficient.

[0050] Optionally, a lead screw 540 is rotatably provided inside the sliding groove 520. The two ends of the lead screw 540 are rotatably connected to the discharge plate 500, and the lead screw 540 is threadedly connected to the push-pull plate 530. In this way, the rotation of the lead screw 540 drives the push-pull plate 530 to slide inside the sliding groove 520, thereby pushing the curb stone toward the discharge port 510.

[0051] Optionally, one end of the lead screw 540 is connected to the output end of the fourth motor 541, and the fourth motor 541 is connected to the discharge disc 500. In this way, the fourth motor 541 provides power for the rotation of the discharge disc 500.

[0052] Optionally, a guide plate 550 is provided at the edge of the discharge port 510. This increases the sliding distance of the curbstone, reduces the drop between the curbstone and the ground, and lowers the risk of the curbstone falling and being damaged. Figure 6 As shown, optionally, the bottom of the rotating platform 200 is provided with a gear ring 210, which is rotatably connected to the transport vehicle 100. The gear ring 210 meshes with a first gear 220, which is connected to the output end of a first motor 230, which is also connected to the transport vehicle 100. In this way, the first motor 230 provides power for the rotation of the first gear 220, thereby driving the gear ring 210 and the rotating platform 200 to rotate, and adjusting the orientation of the top curbstone along its length in a timely manner.

[0053] Optionally, a handle 110 is fixedly provided on the transport vehicle 100. In this way, the transport vehicle 100 can be easily pushed and pulled by the handle 110.

[0054] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A transport device for facilitating kerb laying, characterised in that, The utility model relates to a convenient curbstone laying conveying device, including: A carrying vehicle (100); A rotating table (200) is rotatably connected with the carrying vehicle (100) and is used for stacking curbstones; A lifting table (300) is movably arranged on the carrying vehicle (100) and is located at one side of the rotating table (200), a rotating roller (310) is rotatably arranged on the lifting table (300), and a lifting hole (320) is arranged on the lifting table (300); A suction cup assembly (400) is movably arranged in the lifting hole (320) of the lifting table (300) and is used for pulling the curbstone to the lifting table (300); A discharge tray (500) is obliquely arranged on the carrying vehicle (100); The rotating roller (310) can push the curbstone on the lifting table (300) to the discharge tray (500).

2. The transport device for curb laying ease according to claim 1, wherein The suction cup assembly (400) comprises: A moving box (410) with an open side wall (411) is slidably arranged in the lifting hole (320); An electric suction cup (420) is slidably connected with the moving box (410) and can slide out of the moving box (410) along the open side wall (411); The upper surface of the moving box (410) is flush with the upper surface of the lifting table (300) after being moved to a position.

3. The convenient curbstone laying conveying device according to claim 1, wherein The rotating roller (310) is provided with two rotating rollers, and the two rotating rollers are arranged on the two sides of the lifting hole (320).

4. The convenient curbstone laying conveying device according to claim 1, wherein The bottom of the lifting table (300) movably has an abutting block (480), and the abutting block (480) can abut against the curbstone on the rotating table (200) and extend out of the lifting table (300).

5. The convenient curbstone laying conveying device according to claim 1, wherein The end of the discharge tray (500) away from the lifting table (300) is provided with a discharge port (510), the discharge tray (500) is provided with a sliding groove (520), a push-pull plate (530) is slidably arranged in the sliding groove (520), and the push-pull plate (530) is used for pushing the curbstone on the discharge tray (500) to the discharge port (510).

6. The convenient curbstone laying conveying device according to claim 5, wherein A lead screw (540) is rotatably arranged in the sliding groove (520), the two ends of the lead screw (540) are rotatably connected with the discharge tray (500), and the lead screw (540) is threadedly connected with the push-pull plate (530).

7. The convenient curbstone laying conveying device according to claim 6, wherein The edge of the discharge port (510) is provided with a guide plate (550).

8. The convenient curbstone laying conveying device according to any one of claims 1 to 7, wherein The bottom of the rotating table (200) is provided with a gear ring (210), the gear ring (210) is rotatably connected with the carrying vehicle (100), the gear ring (210) is engaged with a first gear (220), the first gear (220) is connected with the output end of a first motor (230), and the first motor (230) is connected with the carrying vehicle (100).