Road edge stone demolding device

Abstract

The invention provides a road edge stone demolding device, and relates to the technical field of constructional engineering, the road edge stone demolding device comprises a supporting frame and clamping grooves, the clamping grooves are fixed on the left and right sides of the supporting frame, rotating shafts are fixedly arranged on the left and right sides of the supporting frame, an operation frame is installed outside the rotating shafts, and the operation frame comprises a handle and movable rods fixed at the two ends of the handle; one end of the movable rod is rotationally matched with the rotating shaft; supporting legs are fixed to the two sides of the front end of the supporting frame respectively, the upper ends of the supporting legs are fixedly connected with the supporting frame, and lifting limiting columns are fixed to the lower ends of the supporting legs. Supporting legs are fixed to the two sides of the rear end of the supporting frame correspondingly, the lower ends of the supporting legs extend to the position below the plane where the supporting frame is located, the upper ends of the supporting legs extend to the position above the plane where the supporting frame is located, pressing limiting columns are fixedly arranged on one sides of the upper ends of the two supporting legs correspondingly, and the two pressing limiting columns extend towards the outer side of the supporting frame correspondingly. The problems that in the prior art, a worker needs to tightly hold supporting legs with two hands to exert force to turn over, and the turning process is difficult to operate are solved.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a curbstone demolding device. Background Technology

[0002] Concrete curb stones, as core boundary stone components in infrastructure projects such as municipal roads, landscaping, and old city renovation, are formed by concrete pouring and can effectively delineate road functional areas and ensure the safety of pedestrians and vehicles, with a wide range of applications. However, a single curb stone typically weighs 30 to 60 kg, and after forming, it needs to be demolded from the mold. The demolding efficiency and operational safety directly affect the project progress and construction safety.

[0003] In the prior art, Chinese invention patent CN217834085U discloses a tool for demolding curb stones, which includes a support frame with a crossbeam and side beams. The side beams are symmetrically equipped with clamping components consisting of vertical beams, panels, and connecting rods. The panels and connecting rods form slots. The lower part of the support frame has four legs for gripping and support. When using this tool, the user must manually hold the legs to place the curb stone mold between the two clamping components, causing the outer edge of the mold to engage in the slots. Then, the user manually rotates the device 180° to demold the curb stone.

[0004] However, the aforementioned existing technology still has the following drawbacks: workers need to grip the outriggers tightly with both hands to exert force and rotate the vehicle, and the force needs to be precisely controlled and balanced during the rotation process, making it difficult to operate. Summary of the Invention

[0005] This application provides a curbstone demolding device, which solves the problem in the prior art that workers need to use both hands to grip the support legs to exert force and rotate the curbstone, and that it is difficult to operate the device while controlling the force balance during the rotation process.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a curbstone demolding device, comprising a support frame and two clamping grooves located above the support frame. The openings of the two clamping grooves face each other and are respectively fixed on the left and right sides of the support frame. A rotating shaft is fixedly provided on the left and right sides of the support frame. An operating frame is rotatably mounted on the outside of the rotating shaft. The operating frame includes a handle and movable rods fixed to both ends of the handle. The end of the movable rod away from the handle is rotatably engaged with the rotating shaft. Support feet are fixedly provided on both sides of the front end of the support frame. The upper end of the support feet is fixedly connected to the support frame. A lifting limit post is fixedly provided on the lower end of the support feet. The two lifting limit posts extend outward toward the support frame. Support legs are fixedly provided on both sides of the rear end of the support frame. The rear side of the support legs has an arc-shaped structure, and the lower end of the support legs extends below the plane where the support frame is located, and the upper end extends above the plane where the support frame is located. A pressing limit post is fixedly provided on one side of the upper end of each of the two support legs. The two pressing limit posts extend outward toward the support frame.

[0007] Because the support frame of this device is fixed with rotating shafts on both sides, and an operating frame consisting of a handle and a movable rod is rotatably mounted on the outside of the rotating shafts, and support feet with lifting limit posts are fixed on both sides of the front end of the support frame, and support legs with arc-shaped rear ends and pressing limit posts are fixed on both sides of the rear end, and two clamping slots are fixed to the upper left and right sides of the support frame, when using this device, the curbstone mold can be first inserted into the two clamping slots for positioning. The operator only needs to hold the handle to drive the operating frame to rotate around the rotating shaft. During the lifting process, the lifting limit posts reliably limit the movable rod. Then, the lower end of the support leg is used as a fulcrum to drive the support frame and mold to rotate smoothly. The arc-shaped structure on the rear side of the support leg can reduce the rotation resistance. When the rotation is close to 180°, pressing the limit post can limit the movable rod to maintain the stability of the device. The entire process does not require both hands to hold the support legs to exert force, and a single person can easily operate it. This solves the problem in the existing technology that workers need to hold the support legs with both hands to exert force to rotate and control the balance of force during the rotation process, which is difficult to operate.

[0008] As a further improvement to the above solution, the upper end of the support leg is equipped with a traveling wheel, which is a caster wheel with a brake; thus, the entire device can be moved flexibly by pushing or pulling the handle, through the rolling of the traveling wheel.

[0009] As a further improvement to the above solution, the end opening of the clamping groove is machined with a chamfer or rounded corner that matches the thickness of the groove wall. Thus, during the operation of inserting the outer edge of the curbstone mold into the clamping groove, the chamfer or rounded corner can form a natural guide, allowing the outer edge of the mold to slide smoothly into the groove without repeated alignment, greatly shortening the mold positioning operation time and improving the preparation efficiency before demolding. At the same time, the edge of the groove becomes smooth and without sharp protrusions due to the chamfer or rounded corner treatment, which can completely avoid the risk of operators being scratched by sharp edges when pushing and disassembling the mold, further ensuring the safety of the operation process.

[0010] As a further improvement to the above solution, a limiting block is fixed at the rear side of the support frame. The limiting block is fixed to the support frame as a whole by welding. During the process of inserting the left and right outer edges of the curbstone mold into the clamping groove, the rear side of the mold will abut against the limiting block. This can quickly confirm the installation status of the mold and avoid positioning deviation due to the mold not being clamped tightly. It can also form a rigid limit in the front and back direction of the mold to prevent the mold from moving back and forth during the entire process of flipping and demolding.

[0011] As a further improvement to the above solution, the pivots on both sides of the support frame are located close to the rear side of the support frame and symmetrically on the left and right sides of the support frame.

[0012] As a further improvement to the above solution, the movable rod is a bent rod-shaped structure made of round steel. The bent part of the movable rod is close to the end connected to the rotating shaft. When the movable rod abuts against the pressing limit post, the bent part of the movable rod is located above the pressing limit post; when the movable rod abuts against the lifting limit post, the bent part of the movable rod is located below the lifting limit post.

[0013] As a further improvement to the above solution, the rotating shaft is welded and fixed to the side of the support frame; this fixing method enables the rotating shaft and the support frame to form a solid integral structure with high connection strength, which can effectively withstand the radial force generated when the operating frame rotates.

[0014] As a further improvement to the above solution, the outer circumferential surface of the rotating shaft is machined with a fully threaded structure, and the rotating shaft passes through the reserved through hole in the side frame of the support frame. Both ends of the rotating shaft are threaded with locking nuts, and the side frame of the support frame and one end of the movable rod are located between the locking nuts at both ends of the rotating shaft. Thus, by disassembling the locking nuts, handles of different lengths or movable rods of different structures can be replaced, enabling the device to adapt to the demolding operations of curb stones of different weights and specifications, greatly improving the versatility and flexibility of the device.

[0015] As can be seen from the above technical solutions, the present invention has at least the following technical effects or advantages: Because the support frame of this device is fixed with rotating shafts on both sides, and an operating frame consisting of a handle and a movable rod is rotatably mounted on the outside of the rotating shafts, and support feet with lifting limit posts are fixed on both sides of the front end of the support frame, and support legs with arc-shaped rear structures and pressing limit posts are fixed on both sides of the rear end, and two clamping slots are fixed to the upper left and right sides of the support frame, when using this device, the curbstone mold can be first inserted into the two clamping slots for positioning. The operator only needs to hold the handle to drive the operating frame to rotate around the rotating shaft. During the lifting process, the lifting limit post forms a reliable limit on the movable rod. Then, the lower end of the support leg is used as a fulcrum to drive the support frame and mold to rotate smoothly. The arc-shaped structure on the rear side of the support leg can reduce the rotation resistance. When the rotation is close to 180°, pressing the limit post can limit the movable rod to maintain the stability of the device. There is no need to use both hands to hold the support leg to exert force throughout the process. One person can easily operate it, thus solving the problem that workers need to use both hands to hold the support leg to exert force to rotate and control the balance of force during the rotation process, which is difficult to operate. Attached Figure Description

[0016] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A magnified view of a portion of point A in the middle; Figure 3 This is a diagram illustrating the process of the present invention engaging with the curbstone mold; Figure 4 This is a diagram showing the completed connection between the invention and the curbstone mold; Figure 5 This is a diagram illustrating the process of flipping the curbstone mold in this invention. Figure 6 This is a diagram showing the completed flipping of the curbstone mold and the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Support frame, 2. Clamping groove, 3. Rotating shaft, 4. Handle, 5. Movable rod, 6. Support foot, 7. Lifting limit post, 8. Support leg, 9. Pressing limit post, 10. Traveling wheel, 11. Limiting block, 12. Locking nut, 13. Mold. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of this patent.

[0019] This invention discloses a curbstone demolding device, such as... Figure 1 As shown, it includes a support frame 1, clamping grooves 2, a rotating shaft 3, an operating frame, support feet 6, lifting limit posts 7, support legs 8, and pressing limit posts 9. The two clamping grooves 2 face each other and are fixed to the upper left and right sides of the support frame 1, respectively. The rotating shaft 3 is located on the left and right sides of the support frame 1. The operating frame consists of a handle 4 and movable rods 5 at both ends. The end of the movable rod 5 away from the handle 4 engages with the rotating shaft 3 to achieve a rotatable connection between the operating frame and the support frame 1. The support feet 6 are fixed to the front sides of the support frame 1, with lifting limit posts 7 fixed at their lower ends, extending outwards from the support frame 1. The support legs 8 are fixed to the rear sides of the support frame 1, with their lower ends extending below the plane of the support frame 1 and their upper ends extending above the plane. A pressing limit post 9 is fixed to one side of the upper end of the support leg 8, extending outwards from the support frame 1.

[0020] The support frame 1 adopts a rectangular frame structure, and its length and width are adapted to the specifications of the mold 13 commonly used on the market for curb stones. The left and right sides of the support frame 1 are symmetrical, which can provide a foundation for the subsequent installation of the clamping groove 2 and the rotating shaft 3; the front two sides of the support frame 1 are symmetrically provided with mounting positions for the support feet 6.

[0021] The clamping grooves 2 are positioning and fixing components for the mold 13. Two grooves are provided and symmetrically welded to the upper edges of the left and right sides of the support frame 1 using a full welding process. The openings of the two clamping grooves 2 face each other, and the width of the openings is adapted to the outer edge thickness of the mold 13 commonly used for curb stones. This allows the outer edges of the left and right sides of the mold 13 to be tightly engaged in the grooves, achieving positioning of the mold 13 on the support frame 1 and preventing displacement or detachment of the mold 13 during the flipping process. Preferably, the openings at both ends of the clamping grooves 2 are chamfered or rounded to match the groove wall thickness, making the groove edges smooth and free of sharp edges. This structure serves two purposes: firstly, it guides the operator, making it easier for the operator to quickly engage the outer edge of the mold 13 into the clamping grooves 2, improving work efficiency; secondly, it prevents the operator from being scratched by sharp edges when installing or removing the mold 13, improving operational safety.

[0022] The rotating shaft 3 serves as the connecting component between the operating frame and the support frame 1. Two shafts are provided, fixed to the left and right sides of the support frame 1 near the center and slightly rearward, arranged horizontally to ensure that the axes of the two rotating shafts 3 are aligned, thus guaranteeing the stability of the operating frame during rotation. The rotating shafts 3 can withstand the force exerted during the rotation of the operating frame and the weight of the curbstone, preventing bending or breakage. In this embodiment, two fixing methods for the rotating shafts 3 are provided to adapt to different usage scenarios and operational requirements: The first fixing method is welding. The middle part of the rotating shaft 3 is fully welded perpendicularly to the side frame of the support frame 1, ensuring that the rotating shaft 3 and the support frame 1 form a solid integral structure, preventing the rotating shaft 3 from loosening, shifting, or falling off during rotation. This fixing method has a simple structure, low manufacturing cost, and high connection strength. It can effectively withstand the radial and axial forces generated when the operating frame rotates, avoiding component loosening and ensuring stable operation of the device during long-term, high-intensity demolding operations. It is especially suitable for scenarios with harsh construction environments and high requirements for device stability.

[0023] The second fixing method is threaded connection, such as... Figure 2As shown, the outer circumferential surface of the rotating shaft 3 is machined with a fully threaded structure and penetrates the side frame of the support frame 1. Both ends of the rotating shaft 3 are fitted with locking nuts 12. The side frame of the support frame 1 and one end of the subsequent movable rod 5 are located between the locking nuts 12 at both ends of the rotating shaft 3. In specific installation, first, the rotating shaft 3 is passed through the reserved through hole in the side frame of the support frame 1, then the movable rod 5 is sleeved on the rotating shaft 3, and finally, the locking nuts 12 are screwed into both ends of the rotating shaft 3 and tightened. The locking force of the locking nuts 12 fixes the rotating shaft 3, the side frame of the support frame 1, and the movable rod 5 into one unit, while ensuring that the movable rod 5 can rotate flexibly around the rotating shaft 3 without axial movement. The advantage of this fixing method lies in its detachability. When it is necessary to repair or replace the rotating shaft 3 or the movable rod 5, the relevant parts can be removed simply by loosening the locking nuts 12 at both ends, making the operation convenient. In addition, by disassembling the locking nuts 12, different specifications of operating frames (such as handles 4 of different lengths or movable rods 5 of different structures) can be replaced, so that the device can be adapted to the demolding operation of curb stones of different weights and specifications, improving the versatility and flexibility of the device. Compared with the welding fixing method, it has more advantages in terms of maintenance convenience and versatility.

[0024] The operating frame includes a handle 4 and two movable rods 5. The handle 4 is a cylindrical rod, which is easy for the operator to grip and apply force with both hands, avoiding improper force application due to slippage during operation. The surface of the handle 4 can also be treated with anti-slip treatment as needed, such as knurling or wrapping with anti-slip rubber sleeves, to further improve the stability and comfort of gripping. The two movable rods 5 are respectively vertically fixed at both ends of the handle 4, forming a "U" shape with the handle 4. The movable rods 5 are made of round steel bent into a smooth arc shape. The end of the movable rod 5 away from the handle 4 has a through hole adapted to the rotating shaft 3. The inner diameter of the through hole is slightly larger than the outer diameter of the rotating shaft 3, which ensures that the movable rod 5 can be smoothly fitted onto the outside of the rotating shaft 3, and also reduces the gap between the two, avoiding excessive shaking when the operating frame rotates. The curved structure of the movable rod 5 is close to the end that is connected to the rotating shaft 3. When the movable rod 5 abuts against the pressing limit post 9, the curved part of the movable rod 5 is located above the pressing limit post 9. When the movable rod 5 abuts against the lifting limit post 7, the curved part of the movable rod 5 is fully in contact with the lower end face of the lifting limit post 7.

[0025] Two support feet 6 are symmetrically fixed to the left and right sides of the front end of the support frame 1, and can be welded to the support frame 1. When the support frame 1 is in its initial state, the lower ends of the support feet 6 and the lower ends of the support legs 8 work together to provide support, keeping the device stable. When the device is demolding, the support feet 6 rotate with the support frame 1. The lifting limit post 7 is fixed to the lower end of the support feet 6, extends horizontally towards the outside of the support frame 1, and is fixed to the support feet 6 by welding. When the movable rod 5 rotates upward around the pivot 3 until it abuts against the lifting limit post 7, the lifting limit post 7 can effectively limit the movable rod 5 from continuing to rotate, keeping the operating frame in the lifting limit state, providing a force fulcrum for the rotation of the support frame 1, and ensuring that the force exerted by the operator when pulling the handle 4 can be effectively transmitted to the support frame 1, causing the support frame 1 to rotate smoothly.

[0026] Two support legs 8 are symmetrically fixed to the left and right sides of the rear end of the support frame 1 and welded to it. The rear side of the support leg 8 has a smooth arc structure, which reduces the frictional resistance when the support frame 1 is flipped, allowing the support frame 1 to flip smoothly around the lower fulcrum of the support leg 8 without jamming. The lower end of the support leg 8 extends below the plane of the support frame 1, supporting the entire device. Its lower end surface is flat to ensure the stability of the device when placed. The upper end of the support leg 8 extends above the plane of the support frame 1, providing a base for the installation of the pressing limit post 9 and the traveling wheel 10. The pressing limit post 9 is fixed to the outer side of the upper end of the support leg 8, extending horizontally towards the outer side of the support frame 1, symmetrically arranged with the lifting limit post 7. Its material is the same as that of the support leg 8, and it is fixed by welding. When the support frame 1 is rotated to nearly 180°, the movable rod 5 rotates around the pivot 3 until it abuts against the pressing limit post 9. The pressing limit post 9 can restrict the movable rod 5 from continuing to rotate, so that the support frame 1 remains in a stable state after being rotated. At this time, the mold 13 opens downwards, providing a stable posture guarantee for the detachment of the curb stone.

[0027] To further enhance the mobility of the device, a traveling wheel 10 is installed on the upper end of the support leg 8. The traveling wheel 10 is a commercially available product with brakes (not described in detail in this embodiment) and is made of wear-resistant rubber. The traveling wheel 10 is mounted on the reserved mounting position on the upper end of the support leg 8 via axle rotation. When moving the device, the operator only needs to push or pull the handle 4 to move the support frame 1 and support leg 8 through the operating frame. The rolling of the traveling wheel 10 reduces the frictional resistance between the device and the ground, making movement more effortless and convenient. It eliminates the need for multiple people to work together to move the device, effectively reducing the labor intensity of the operator. When the device is moved to the designated working position, it can be fixed by the braking function of the traveling wheel 10 to prevent displacement of the device during operation and ensure the stability and safety of the demolding operation.

[0028] A limiting block 11 is also fixed to the rear side of the support frame 1. The limiting block 11 is a block structure and is fixed to the rear side of the support frame 1 by welding. When the outer edges of the left and right sides of the mold 13 are inserted into the clamping groove 2, the rear side of the mold 13 abuts against the limiting block 11. The limiting block 11 can limit the edge of the mold 13, ensuring that the mold 13 is inserted into the support frame 1 in place, preventing the mold 13 from shifting back and forth during the flipping process, and ensuring the smooth demolding operation.

[0029] The working process of the curbstone demolding device of the present invention in practical application is as follows: First, the operator flips the support frame 1 so that the support feet 6 are facing upwards, positioning the openings of the clamping grooves 2 to facilitate the insertion of the mold 13. Then, the operator pulls the support frame 1, aligning the outer edges of the left and right sides of the mold 13 with the openings of the two clamping grooves 2. Using the guiding effect of the chamfered ends of the clamping grooves 2, the mold 13 is smoothly pushed into the clamping grooves 2 until the rear side of the mold 13 abuts against the limiting block 11 on the support frame 1. At this point, the left and right sides of the mold 13 are located within the clamping grooves 2 and are limited by the limiting block 11, thus completing the positioning of the mold 13 on the support frame 1. Figure 3 , Figure 4 As shown.

[0030] Then, the brake pedal of the traveling wheel 10 is depressed to perform the flipping operation of the support frame 1. The operator holds the handle 4 with both hands and pulls the operating frame upward. Under the pull, the operating frame rotates upward around the pivot 3. At this time, the movable rod 5 rotates synchronously around the pivot 3. When the movable rod 5 rotates to the point where its arc-shaped upper surface abuts against the lower end of the lifting limit post 7, the lifting limit post 7 blocks the movable rod 5, restricting the movable rod 5 from continuing to rotate upward. At this time, the operating frame is in a stable lifting limit state. Subsequently, the operator uses the lower end of the support leg 8 as a fulcrum and slowly pushes the support frame 1, causing the support frame 1 to drive the mold 13 to flip synchronously around the fulcrum. The arc-shaped structure on the rear side of the support leg 8 reduces the frictional resistance during the flipping process, making the flipping smoother and less strenuous. Figure 5 As shown. During the flipping process, since the mold 13 is firmly fixed by the clamping groove 2 and the limiting block 11, it will not shift or fall off, ensuring the safety of the flipping process.

[0031] When the support frame 1 rotates approximately 180°, the movable rod 5 continues to rotate around the pivot 3 under the influence of gravity and the rotation of the support frame 1, until the upper surface of the movable rod 5 abuts against the pressing limit post 9. The pressing limit post 9 restricts the movable rod 5 from continuing to rotate. At this time, the support frame 1 remains in a stable state with the rotation approximately 180°, and the opening of the mold 13 faces downwards, achieving a complete reversal of direction compared to the initial state. At this time, the operator presses the handle 4 by hand, transmitting force to the support frame 1 through the operating frame, causing the device to vibrate slightly. Under the action of its own gravity and in conjunction with the vibration of the device, the curbstone separates from the inner wall of the mold 13 and falls out of the mold 13 to the preset placement position, completing the demolding operation. Figure 6 As shown. Compared to the existing technology that requires manual gripping of the support legs to generate force for flipping and precise control of force balance, the present invention significantly reduces the force exerted by the operator through the limiting effect of lifting the limiting post 7 and pressing the limiting post 9, as well as the application of the lever principle. It eliminates the need for precise control of force balance, allowing a single person to easily complete the flipping and demolding operations, effectively solving the problem of high operational difficulty in the existing technology.

[0032] In addition, the rotating shafts 3 on both sides of the support frame 1 are set close to the rear side of the support frame 1, which makes the rotation fulcrum of the operating frame closer to the flipping fulcrum of the support leg 8, thus optimizing the transmission ratio of the lever. According to the lever principle, under the same load, it can effectively reduce the force required for the operator to press, which is especially suitable for demolding of heavy curb stones, further reducing the labor intensity of the operator and improving the practicality of the device.

[0033] In the description of this invention, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only to describe the invention and not to require the invention to be constructed or operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" in this invention should be interpreted broadly. For example, they can refer to a connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms based on the specific circumstances.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in its embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A curbstone demolding device, comprising a support frame (1) and two clamping grooves (2) located above the support frame (1), wherein the openings of the two clamping grooves (2) face each other and are respectively fixed to the left and right sides of the support frame (1), characterized in that, The support frame (1) is fixed with rotating shafts (3) on the left and right sides respectively. An operating frame is rotatably mounted on the outside of the rotating shafts (3). The operating frame includes a handle (4) and movable rods (5) fixed at both ends of the handle (4). The end of the movable rod (5) away from the handle (4) is rotatably engaged with the rotating shaft (3). Support feet (6) are fixed on both sides of the front end of the support frame (1). The upper end of the support foot (6) is fixedly connected to the support frame (1). The lower end of the support foot (6) is fixed with a lifting limit post (7). The two lifting limit posts (7) extend outward toward the support frame (1) respectively; the two sides of the rear end of the support frame (1) are respectively fixed with support legs (8), the rear side of the support legs (8) is an arc structure, and the lower end of the support legs (8) extends to the bottom of the plane where the support frame (1) is located, and the upper end extends to the top of the plane where the support frame (1) is located. The two support legs (8) are respectively fixed with pressing limit posts (9) on one side of the upper end, and the two pressing limit posts (9) extend outward toward the support frame (1) respectively.

2. The curbstone demolding device according to claim 1, characterized in that, The upper end of the support leg (8) is equipped with a walking wheel (10), which is a caster with brake.

3. The curbstone demolding device according to claim 2, characterized in that, The end opening of the clamping groove (2) is machined with a chamfer or rounded corner that matches the thickness of the groove wall.

4. The curbstone demolding device according to claim 3, characterized in that, A limiting block (11) is fixed at the rear side of the support frame (1), and the limiting block (11) is fixed to the support frame (1) by welding.

5. A curbstone demolding device according to claim 4, characterized in that, The pivots (3) on both sides of the support frame (1) are close to the rear side of the support frame (1) and are symmetrically located on the left and right sides of the support frame (1).

6. The curbstone demolding device according to claim 5, characterized in that, The movable rod (5) is a bent rod structure made of round steel. The bent part of the movable rod (5) is close to the end connected to the rotating shaft (3). When the movable rod (5) abuts against the pressing limit post (9), the bent part of the movable rod (5) is above the pressing limit post (9); when the movable rod (5) abuts against the lifting limit post (7), the bent part of the movable rod (5) is below the lifting limit post (7).

7. A curbstone release device according to any one of claims 1 to 6, characterized in that, The rotating shaft (3) is welded and fixed to the side of the support frame (1).

8. A curbstone release device according to any one of claims 1 to 6, characterized in that, The outer circumferential surface of the rotating shaft (3) is machined with a full thread structure, and the rotating shaft (3) passes through the reserved through hole of the side frame of the support frame (1). Both ends of the rotating shaft (3) are threaded with locking nuts (12). The side frame of the support frame (1) and one end of the movable rod (5) are located between the locking nuts (12) at both ends of the rotating shaft (3).

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