A road drainage ditch cover lifting device

Abstract

The utility model discloses a road drainage ditch cover plate lifting device, technical scheme is as follows: including mobile base, is provided with the lifting lever and the press bar of front -back connection on mobile base, and the front end articulation of lifting lever has the connecting block of front -back rotation leveling, and the both sides end articulation of connecting block has the clamping plate, and the lower part side end of clamping plate sets up the clamping plate of support cover plate's clamping plate, and the bottom of clamping plate is provided with the guide rolling frame of convenient clamping and placing cover plate, and the utility model provides road drainage ditch cover plate lifting device and its guide rolling frame and magnetic attraction anti -loosening device, and the cooperation design of mobile base, lifting lever, press bar, clamping plate and guide rolling frame has realized the stable clamping of cover plate and accurate positioning, has solved the technical problem of traditional manual operation's great labour intensity, poor safety, low efficiency, has the advantages such as reducing labour intensity, improving operating safety, improving operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cover plate lifting, specifically to a road drainage ditch cover plate lifting device. Background Technology

[0002] As an important component of urban infrastructure, road drainage ditch covers serve multiple functions: ensuring the safety of pedestrians and vehicles, guaranteeing the smooth flow of the drainage system, and protecting the internal structure of the drainage ditch from damage.

[0003] Traditional cover plates are typically precast concrete and fixed to the top of the drainage ditch using a slotted mechanism. Recessed permeable slits are provided between adjacent cover plates to allow rainwater to seep in. During routine maintenance, especially when cleaning debris from inside the drainage ditch, workers need to frequently open and close the cover plates. Currently, the common method is to manually lift them using simple claw lifting tools. This method has several drawbacks: operators need to bend over to apply force, resulting in high labor intensity and low efficiency; the contact between the claws and the cover plate is unstable, easily causing the cover plate to slip and leading to safety accidents; traditional tools are difficult to position accurately in confined spaces; and single-person operation is particularly difficult with heavy concrete cover plates. Furthermore, existing tools lack effective guiding and positioning mechanisms, making it difficult to accurately align the cover plate with the drainage ditch slot when resetting, often requiring repeated adjustments and severely impacting work efficiency. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a road drainage ditch cover lifting device.

[0005] This utility model is achieved through the following technical solution:

[0006] This application provides a road drainage ditch cover lifting device, the technical solution of which is as follows: it includes a movable base, on which a lifting lever and a pressure rod are connected front and rear. A connecting block for front and rear rotation and leveling is hinged to the front end of the lifting lever. Clamping plates are hinged to both ends of the connecting block. A clamping plate for supporting the cover is provided at the lower side of the clamping plate. A guide rolling frame for easy clamping and placing of the cover is provided at the bottom of the clamping plate.

[0007] Furthermore, this application also proposes that the guide rolling frame includes a guide wedge block, and a guide shaft is mounted on the bottom of the guide wedge block.

[0008] Furthermore, this application also proposes that the guide wedge block can penetrate into the seepage joint between adjacent covers on the road drainage ditch, and the top inner side of the guide wedge block is flush with the bottom of the clamping end of the card plate.

[0009] Furthermore, this application also proposes that a magnetic anti-loosening device be provided between the two clamps, the magnetic anti-loosening device including connecting rods fixed to the inner side of the clamps, and magnets that attract each other are provided at the opposite positions of the two connecting rods.

[0010] Furthermore, this application also proposes that after the two magnets come into magnetic contact, the distance between the two lower guide shafts is greater than the width of the cover plate.

[0011] Furthermore, this application also proposes that the pressure bar and the lifting lever are arranged in an N-shape, and a reinforcing bar connects the pressure bar and the lifting lever.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model provides a road drainage ditch cover lifting device and its guide rolling frame and magnetic anti-loosening device. Through the coordinated design of the moving base, lifting lever, pressure rod, clamping plate and guide rolling frame, the cover is stably clamped and accurately positioned, which solves the technical problems of high labor intensity, poor safety and low efficiency of traditional manual operation. It has the advantages of reducing labor intensity, improving operation safety and improving work efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the insertion and lifting cover plate in this practical application;

[0015] Figure 3 This is a three-dimensional schematic diagram of a practical lifting cover plate;

[0016] In the diagram: 1. Movable base; 2. Pressure rod; 3. Lifting lever; 4. Connecting block; 5. Clamping plate; 6. Guide wedge block; 7. Guide shaft; 8. Connecting rod; 9. Magnet block; 10. Road drainage ditch; 11. Cover plate; 12. Seepage crack; 13. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] like Figure 1-3 As shown, this application proposes a road drainage ditch cover lifting device, including a movable base, on which a lifting lever and a pressure rod are connected front and rear. A connecting block for front and rear rotation and leveling is hinged to the front end of the lifting lever. Clamping plates are hinged to both ends of the connecting block. A clamping plate for supporting the cover is provided at the lower side of the clamping plate. A guide rolling frame for easy clamping and placing of the cover is provided at the bottom of the clamping plate.

[0019] The movable base features a support shaft with wheels on both sides for easy manual movement. The lifting lever and pressure rod are connected via the support shaft to form an N-shaped structure, with the pressure rod acting as the force-applying end and the lifting lever as the force-receiving end. A reinforcing rod can be added between them to improve structural stability. The clamping plate is connected to both sides of the connecting block via a rotating shaft, and a retaining plate is welded to the lower part of the clamping plate, its cross-section being L-shaped to form the cover plate support surface. The guide roller frame includes an inclined wedge-shaped guide surface, and a freely rotatable roller is installed at the bottom.

[0020] This device achieves mechanical lifting of the cover plate through the lever principle. The specific working process is as follows: when the operator presses down the lever, the lifting lever drives the connecting block and clamping plate upwards. The clamping plate, through a locking plate, lifts the cover plate from the drainage ditch slot. During the clamping process, the guide roller automatically aligns with the edge of the cover plate, facilitating the upper locking plate to penetrate deeply into the seepage crack. The hinged design of the clamping plate allows for automatic adjustment of the clamping distance according to the cover plate thickness. Compared with existing claw lifting devices, this device uses a mechanical linkage structure to replace purely manual operation, significantly reducing labor intensity; at the same time, the guide roller achieves precise positioning, avoiding the inefficiency caused by inaccurate manual alignment. This design is particularly suitable for road drainage ditch maintenance scenarios that require frequent opening and closing of the cover plate.

[0021] Furthermore, this application also proposes that the guide rolling frame includes a guide wedge block, and a guide shaft is mounted on the bottom of the guide wedge block.

[0022] Specifically, the guide wedge is made of metal or high-strength engineering plastic, and its front end is designed with a beveled structure to facilitate insertion into the gap of the cover plate. The guide shaft can be a bearing-type roller or a metal shaft with a rubber-coated surface, and the shaft diameter is preferably 5-10mm to balance strength and flexibility.

[0023] Therefore, this technical solution, through the combination of wedge blocks and a rotating shaft, can automatically align with the seepage crack when gripping the cover plate, and reduces frictional resistance through rolling contact. Compared with existing technologies, this structure solves the problem of difficult precise positioning during manual operation and avoids wear on the cover plate edges caused by hard contact. The guide shaft makes the device more labor-saving when moving the cover plate, while the inclined structure of the wedge blocks effectively prevents jamming.

[0024] Furthermore, this application also proposes that the guide wedge block can penetrate into the seepage joint between adjacent covers on the road drainage ditch, and the top inner side of the guide wedge block is flush with the bottom of the clamping end of the card plate.

[0025] Specifically, the guide wedge features a beveled design with a gradually narrowing wedge shape at its front end, facilitating insertion into the seepage gap between the cover plates. As a preferred embodiment, the wedge's inclination angle is 15-30 degrees, and it is made of high-strength alloy steel. The connection between the guide wedge and the retaining plate is precision-machined to ensure a perfect fit between their contact surfaces. The bottom width of the guide wedge is slightly smaller than the width of the seepage gap.

[0026] Therefore, this technical solution achieves precise positioning and stable clamping of the cover plate by designing the guide wedge block to penetrate deep into the seepage crack. The flush connection between the guide wedge block and the clamping plate ensures uniform force distribution during clamping, preventing damage to the cover plate edges. Compared with existing technologies, this solution solves the problems of inaccurate positioning and unstable clamping during manual operation, improving the efficiency and safety of cover plate lifting operations. The wedge-shaped design of the guide wedge block allows it to adapt to seepage cracks of different widths, enhancing the versatility of the device.

[0027] Furthermore, this application also proposes that a magnetic anti-loosening device be provided between the two clamps, the magnetic anti-loosening device including connecting rods fixed to the inner side of the clamps, and magnets that attract each other are provided at the opposite positions of the two connecting rods.

[0028] Specifically, the magnetic anti-loosening device achieves automatic anti-loosening of the clamping plate through the attraction of magnetic blocks. The connecting rod can be made of metal and is fixed to the clamping plate by bolts or welding. The magnetic blocks are preferably neodymium magnets, and their magnetic strength can be adjusted according to the weight of the cover plate. As a preferred embodiment, a 1-2mm rubber pad is attached to the contact surface of the magnetic blocks to prevent damage to the magnetic blocks upon contact.

[0029] Therefore, this technical solution solves the problem of precise clamping force control when manually operating the gripper. When the cover needs to be released, the operator simply lowers the cover; its own weight presses down, causing the guide shaft to move to both sides, opening the magnetic anti-loosening device and achieving automatic release. Compared to traditional mechanical anti-loosening mechanisms, this design offers advantages such as fast response, less effort required, and less likelihood of jamming. Furthermore, the magnetic anti-loosening device has a simple structure, requires no additional power source, and has low maintenance costs. This device is particularly suitable for work scenarios requiring frequent opening and closing of covers, effectively improving the efficiency of drainage ditch maintenance.

[0030] Furthermore, this application also proposes that after the two magnets come into magnetic contact, the distance between the two lower guide shafts is greater than the width of the cover plate.

[0031] Specifically, the magnet is fixed directly opposite the connecting rod. When the two clamping plates approach each other via the magnetic anti-loosening device, the magnet generates a magnetic attraction, keeping the clamping plates in a closed clamping state against the cover plate. The guide shaft is installed at the bottom of the guide wedge block. The spacing between the two guide shafts needs to consider the standard width of the cover plate. For example, a common concrete cover plate is 500mm wide, so the guide shaft spacing should be designed to be 520-550mm. Therefore, when the clamping plates are closed, the guide shaft spacing is always greater than the cover plate width, preventing squeezing damage to the cover plate edges during lifting.

[0032] To address this issue, this technical solution precisely controls the spacing parameters of the guide mechanism under magnetic attraction, resolving the problem of uneven force on the cover plate edges caused by the fixed clamping spacing in traditional claw lifting devices. Because the magnetic anti-loosening device automatically adjusts the clamping plate spacing, combined with the spacing limitation of the guide shaft, the device can adapt to clamping operations on cover plates of varying thicknesses, while ensuring the cover plate remains horizontally stable during lifting. Compared to existing technologies, this solution effectively reduces the risk of cover plate breakage and improves operational efficiency while maintaining clamping force.

[0033] Furthermore, this application also proposes that the pressure bar and the lifting lever are arranged in an N-shape, and a reinforcing bar connects the pressure bar and the lifting lever.

[0034] This technical solution effectively improves the mechanical strength and stability of the device through the combination of an N-shaped structure and a reinforcing rod. When the operator presses down the lever, the N-shaped structure can evenly transmit the force to the lifting lever, avoiding localized stress concentration; at the same time, the reinforcing rod can prevent deformation or breakage at the connection between the lever and the lifting lever.

[0035] The implementation principle of the road drainage ditch cover lifting device in this application embodiment is as follows:

[0036] When hoisting the cover plate 12, the operating lever 2 moves the device to the side of the corresponding cover plate 12, and the lifting lever 3 is lowered. During the descent, the clamping plates 5 on both sides of the connecting block 4 remain horizontal. During the descent, the guide wedge 7 at the bottom of the clamping plate 6 extends into the seepage gap 13. Due to the inclination of the inner side of the guide wedge 7, as it penetrates into the seepage gap 13, the guide wedge 7 with the inclined surface contacts the two sides of the cover plate 12, eventually opening the two clamping plates 6 to facilitate its downward movement and clamping the bottom of the cover plate 12. When the clamping plate 6 falls to the bottom of the cover plate 12, the detached magnet 10 closes the two clamping plates 5 under magnetic attraction, realizing the automatic clamping support of the clamping plate 6 on the bottom of the cover plate 12. The lowering lever 2 uses the lever principle to lift and move the cover plate 12.

[0037] Move to the side position to lower the lifting lever 3 and clamping plate 5. The guide shaft 8 at the bottom of the guide wedge block 7 contacts the ground. As the clamping plate 5 is tilted and falls, it is pressed by the cover plate 12. This causes the inclined clamping plates 5 on both sides to rotate outward through the guide shaft 8 and release from the cover plate 12, thereby realizing the automatic clamping and lifting of the cover plate 12. The whole process is time-saving and labor-saving, and more convenient for operators.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A road drainage ditch cover lifting device, comprising a movable base (1), characterized in that: The movable base (1) is provided with a lifting lever (3) and a pressure rod (2) connected in the front and rear. The lifting lever (3) is hinged to a connecting block (4) for front and rear rotation and leveling. The two sides of the connecting block (4) are hinged to clamps (5). The lower side of the clamps (5) is provided with a clamping plate (6) for supporting the cover plate (12). The bottom of the clamps (6) is provided with a guide roller frame for easy clamping and placing of the cover plate (12).

2. The road drainage ditch cover lifting device according to claim 1, characterized in that: The guide rolling frame includes a guide wedge block (7), and a guide shaft (8) is mounted on the bottom of the guide wedge block (7).

3. The road drainage ditch cover lifting device according to claim 2, characterized in that: The guide wedge (7) can penetrate into the seepage gap (13) between adjacent cover plates (12) on the road drainage ditch (11), and the top inner side of the guide wedge (7) is flush with the bottom of the clamping end of the card plate (6).

4. The road drainage ditch cover lifting device according to claim 1, characterized in that: A magnetic anti-loosening device is provided between the two clamps (5). The magnetic anti-loosening device includes a connecting rod (9) fixed to the inner side of the clamp (5). Magnet blocks (10) that attract each other are provided at the opposite positions of the two connecting rods (9).

5. The road drainage ditch cover lifting device according to claim 4, characterized in that: After the two magnet blocks (10) come into magnetic contact, the distance between the two lower guide shafts (8) is greater than the width of the cover plate (12).

6. The road drainage ditch cover lifting device according to claim 1, characterized in that: The pressure rod (2) and the lifting lever (3) are arranged in an N-shape, and a reinforcing rod is connected between the pressure rod (2) and the lifting lever (3).

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