A curbstone transport tool

Abstract

This utility model relates to the field of curbstone handling technology, specifically a curbstone handling tool. It includes a rotating axle with wheels rotatably connected to both ends, an operating telescopic rod located in the middle of the axle, a tripod hinged at both ends of its bottom to the two ends of the axle, a handling telescopic rod hinged to the operating telescopic rod, a handling mechanism hinged to the end of the handling telescopic rod, and an auxiliary support mechanism mounted on the handling telescopic rod and acting on the curbstone. The handling telescopic rod is equipped with a limiting plate with multiple limiting holes, and the top of the tripod is hinged to the limiting holes. This tool adds an auxiliary support mechanism, using the buffer force of a spring to offset the tilting pressure of the curbstone, a positioning guide rod to ensure stable support direction, and a support plate that adapts to the curbstone's tilt angle and fits tightly, forming reliable lateral support. This solves the problems of swaying and slippage during slope handling, improving safety compared to existing tools and adapting to various construction conditions such as flat ground and slopes.

Description

Technical Field

[0001] This utility model relates to the field of curbstone handling technology, specifically to a curbstone handling tool. Background Technology

[0002] Curbstones, as core components of road engineering ancillary facilities, are widely used in municipal roads, highways, and residential roads. They are mostly made of cement concrete or natural stone, and each piece is large and heavy (typically 99cm × 60cm × 15cm). Dispersed transportation within the construction site is a critical aspect of the process. Traditional curbstone handling methods mainly fall into two categories: manual handling and truck transport. Manual handling is not only labor-intensive and inefficient, but also prone to accidents due to exhaustion. Truck transport, on the other hand, suffers from problems such as excessive vehicle length and inflexible operation, making the curbstones susceptible to bumps and impacts during transport, significantly increasing material loss.

[0003] To address the aforementioned issues, targeted handling tools have emerged in related technical fields. For example, Chinese Patent Publication No. CN217649461U discloses a simple transport tool for handling curb stones, which includes a bottom support, an operating arm, a mechanical arm, a telescopic arm, a connector, mechanical clamps, and wheel axles with wheels at both ends. Through the cooperation of the mechanical clamps and the operating arm, the lever principle is used to pick up, transport, and put down the curb stones, which to some extent avoids the safety hazards of manual handling and the inflexibility of artillery vehicle transport. At the same time, the length can be adjusted by the plug-in connection between the operating arm and the telescopic arm, improving the adaptability to curb stones of different weights.

[0004] However, when the device is transported on sloping sections, it lacks lateral support structures, and the curb stones are prone to tilting due to gravity. Even with mechanical clamps, there is still a risk of shaking or even slipping, resulting in insufficient safety. This problem is particularly prominent on sloping sections commonly encountered in municipal road construction.

[0005] Therefore, there is an urgent need to develop a curbstone handling tool with optimized structure, stable clamping, strong adaptability, and the ability to adapt to complex road conditions, in order to solve the above-mentioned problems of existing technologies, further improve construction efficiency and safety, and reduce manual labor intensity and material loss rate. Utility Model Content

[0006] The purpose of this utility model is to provide a curbstone handling tool to solve the problems mentioned in the prior art in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a curbstone transport tool, comprising a rotating axle with wheels rotatably connected to both ends, an operating telescopic rod disposed in the middle of the rotating axle, a tripod hinged at both ends of the bottom to the two ends of the rotating axle, a transport telescopic rod hinged to the operating telescopic rod, a transport mechanism hinged to the end of the transport telescopic rod, and an auxiliary support mechanism disposed on the transport telescopic rod and acting on the curbstone; the transport telescopic rod is provided with a limiting plate, the limiting plate is provided with a plurality of limiting holes, and the top of the tripod is hinged to the limiting holes.

[0008] Furthermore, the telescopic operating rod includes a rectangular operating cylinder located in the middle of the rotating shaft and an operating rod slidably connected inside the operating cylinder; the end of the operating rod is provided with a handle.

[0009] Furthermore, the transport telescopic rod includes a rectangular transport cylinder hinged to the upper part of the rectangular operating cylinder and a transport rod slidably connected inside the transport cylinder; the limiting plate is located at the bottom of the transport cylinder.

[0010] Furthermore, the conveying mechanism includes a conveying seat hinged to the end of the conveying rod and two conveying plates cross-hinged to the bottom of the conveying seat; each of the two conveying plates has a clamping plate at the bottom of one end that is far apart from the other.

[0011] Furthermore, the auxiliary support mechanism includes an auxiliary rod mounted on the transport rod, a slide rod slidably connected to the bottom of the auxiliary rod, a mounting seat at the end of the slide rod, and a support plate hinged to one side of the mounting seat; the slide rod is fitted with springs at both ends that are respectively connected to the mounting seat and the auxiliary rod, and a positioning guide rod that slides with the bottom of the auxiliary rod is provided on the other side of the mounting seat.

[0012] Furthermore, both the operating cylinder and the transport cylinder are threadedly connected with set screws that act on the operating rod and the transport rod, respectively.

[0013] Furthermore, both of the transport plates are provided with tension springs, and the ends of the two tension springs are respectively connected to the two sides of the transport seat.

[0014] It has the following beneficial effects: 1. Addressing the issues of high labor intensity and extremely low efficiency in traditional manual handling, this tool is designed based on the lever principle. It features a telescopic operating rod and a telescopic handling rod. By adjusting the extension length of the operating rod, the lever arm can be changed to accommodate the handling needs of curb stones of different weights (especially heavy ones). This reduces the difficulty of applying force for workers, replaces manual lifting, and transforms heavy physical labor that requires one or more people to work together into convenient operation by one person, improving handling efficiency and effectively solving the efficiency problem of scattered transportation within the site.

[0015] 2. Addressing the issues of excessively long transport vehicles, inflexible operation, and susceptibility to damage from curbs, this tool features a compact overall structure with wheel spacing and axle length designed for flexible maneuverability in narrow environments such as municipal roads and residential areas. The clamping plates of the transport mechanism utilize a composite structure of wear-resistant rubber and steel plates, with anti-slip textures on the rubber surface. This enhances clamping stability and prevents scratches and damage caused by hard contact with curbs, reducing material loss. It is also suitable for point-to-point transport of scattered curbs, eliminating the need for overall collection and offering greater flexibility than traditional transport vehicles.

[0016] 3. In response to the problem that existing similar handling tools (such as CN217649461U) lack lateral support on sloping sections and that curb stones are prone to tilting and slipping, this tool is equipped with an auxiliary support mechanism. The spring buffer force offsets the pressure of the tilting curb stone, the positioning guide rod ensures the stability of the support direction, and the support plate can adapt to the tilt angle of the curb stone and fit tightly to form reliable lateral support. This solves the swaying and slipping hazards during sloping handling, improves safety compared to existing tools, and is suitable for various construction road conditions such as flat ground and slopes.

[0017] 4. To meet the needs of curb stones of different sizes, weights, and installation heights, this tool achieves comprehensive adaptability through a multi-dimensional adjustable structure. Multiple limiting holes on the limiting plate, in conjunction with the tripod, allow for adjustment of the height of the handling mechanism. The telescopic design of the operating telescopic rod and the handling telescopic rod can adapt to different horizontal distances and weight requirements of curb stones. There is no need to change tools for different curb stones, making it highly versatile and reducing the cost of construction tools. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present utility model; Figure 2 This is a rear view of the present invention.

[0019] In the diagram: 1. Wheel; 2. Axle; 3. Operating telescopic rod; 4. Triangle frame; 5. Transport telescopic rod; 6. Transport mechanism; 7. Auxiliary support mechanism; 8. Limiting plate; 9. Limiting hole; 10. Operating cylinder; 11. Operating rod; 12. Handle; 13. Transport cylinder; 14. Transport rod; 15. Transport seat; 16. Transport plate; 17. Clamping plate; 18. Auxiliary rod; 19. Slide rod; 20. Support plate; 21. Spring; 22. Set screw; 23. Tension spring; 24. Mounting seat; 25. Positioning guide rod. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-2 This document provides a detailed description of the specific implementation of a curbstone transport tool according to the present invention. This embodiment is only used to explain the present invention and is not intended to limit the scope of protection of the present invention.

[0021] This utility model discloses a handling tool that achieves efficient and stable handling of curb stones through a lever principle and an adjustable structure. The tool consists of wheels 1, axle 2, operating telescopic rod 3, tripod 4, handling telescopic rod 5, handling mechanism 6, auxiliary support mechanism 7, limiting plate 8, and matching connecting parts. These components work together to clamp, lift, move, and unload curb stones, solving the problem of curb stone swaying and displacement that often occurs with traditional handling tools on sloping roads. It is also adaptable to curb stones of different weights and sizes, as well as installation requirements at different heights, significantly reducing manual labor intensity. Details are as follows: The wheels 1 are made of high-strength rubber, which is wear-resistant and pressure-resistant. The surface has anti-slip texture to enhance friction with the ground. There are two wheels, which are rotatably connected to both ends of the rotating shaft 2. The diameter is designed to be 15-20cm, which ensures both mobility and avoids interference from road bumps during the handling process, providing stable support for the entire device.

[0022] The pivot shaft 2 is made of 45# seamless steel pipe, with a length designed to fit the wheel spacing, generally 80-100cm, and a wall thickness of 5-8mm to ensure sufficient load-bearing strength. As the core connecting shaft, the pivot shaft 2 is rotated with the wheel 1 at both ends through bearings, fixedly connected to the operating telescopic rod 3 in the middle, and hinged to the tripod 4 at both ends at the bottom, realizing the force transmission and coordinated movement of each component.

[0023] The telescopic operating rod 3 is the core component for workers to apply force. Its telescopic structure adapts to the handling needs of curb stones of different weights, and includes an operating cylinder 10, an operating rod 11, a handle 12, and a set screw 22; among which, The operating cylinder 10 is made of Q235 steel plate, bent and welded, with a rectangular cross-section and a length of 50-70cm. It is fixedly installed in the middle of the rotating shaft 2 and welded to the rotating shaft 2 to ensure a firm and secure connection. The upper part of the operating cylinder 10 is hinged to the transport telescopic rod 5, and the side wall is provided with threaded holes for installing the set screw 22.

[0024] The operating lever 11 is made of the same material as the operating cylinder 10, and its cross-section is also rectangular. Its size is slightly smaller than that of the operating cylinder 10, and its length is 80-120cm. It is slidably connected inside the operating cylinder 10 and its extension length can be adjusted according to needs. By changing the lever arm length, it can be adapted to the handling of curb stones of different weights. The heavier the curb stone, the longer the extension length of the operating lever 11 is, so as to reduce the difficulty of applying force.

[0025] The handle 12 is made of engineering plastic and is formed by injection molding. The surface is provided with anti-slip protrusions and an internal metal bushing is embedded to enhance the connection strength. It is fixedly installed at the end of the operating lever 11 and is bolted to the operating lever 11 for easy disassembly and replacement, providing a comfortable grip for the staff.

[0026] The set screw 22 is made of stainless steel and is threaded into the threaded hole on the side wall of the operating cylinder 10. The end is equipped with an anti-slip knob. After the operating rod 11 is adjusted to the appropriate length, tighten the set screw 22. Its end is tightly against the surface of the operating rod 11. The relative position of the operating rod 11 and the operating cylinder (10) is fixed by friction to prevent slippage during transportation.

[0027] Tripod 4 is made of aluminum alloy profile, which is lightweight and high-strength. It consists of two diagonal bars and one horizontal bar, forming an isosceles triangle structure. The bottom two ends of tripod 4 are hinged to the two ends of pivot 2 via hinge shafts, and the top end has a hinge hole that hinges to the limiting hole 9 of limiting plate 8. The height of the conveying mechanism 6 can be adjusted by changing the hinge position.

[0028] The limiting plate 8 is made of Q235 steel plate, with a thickness of 8-10mm, and is fixedly welded to both sides of the bottom of the transport cylinder 13 of the transport telescopic rod 5. The limiting plate 8 has 4-6 limiting holes 9 evenly provided along its length, with a hole diameter of 12mm and a spacing of 15mm between adjacent holes. By selecting different limiting holes 9 and hinged with the tripod 4, the height of the transport mechanism 6 can be adjusted within a range of 5-15cm.

[0029] The telescopic transport rod 5, serving as a component connecting the telescopic transport rod 3 and the transport mechanism 6, adjusts the horizontal position of the transport mechanism 6 and includes a transport cylinder 13 and a transport rod 14; wherein, The structure of the conveying cylinder 13 is similar to that of the operating cylinder 10. It is formed by bending and welding Q235 steel plate, and has a rectangular cross section. One end is hinged to the upper part of the operating cylinder 10 through a hinge shaft, and the bottom is welded and fixed to the limiting plate 8. The side wall is provided with threaded holes for installing the set screw 22.

[0030] The transport rod 14 is made of Q235 steel and has a rectangular cross-section. It is slidably connected inside the transport cylinder 13 and its extension length can be flexibly adjusted. Its end is hinged to the transport mechanism 6 and its position is fixed by the set screw 22. The set screw 22 has the same specifications as the operating telescopic rod 3 and is a stainless steel bolt.

[0031] The conveying mechanism 6 is responsible for clamping and unloading the curbstone. It employs a cross-hinged structure with elastic components to achieve stable clamping, and includes a conveying seat 15, a conveying plate 16, a clamping plate 17, and a tension spring 23; among which, The transport base 15 is integrally formed from cast steel. The top is hinged to the end of the transport rod 14 via a hinge shaft, and the bottom is provided with two hinge ear plates with hinge holes for connecting the transport plate 16.

[0032] The two transport plates 16 are made of Q235 steel plate, with a length of 100-150mm. They are cross-hinged between the two ear plates at the bottom of the transport base 15. The hinge shaft is made of stainless steel to ensure flexible rotation. The bottom of the two transport plates 16 at the ends that are far apart from each other is provided with a mounting groove for fixing the clamping plate 17.

[0033] The clamping plate 17 is made of wear-resistant rubber and steel plate composite. The steel plate part is 5mm thick and is fixed to the mounting groove of the transport plate 16 by bolts. The rubber part is 10mm thick and has anti-slip texture on the surface. It is used to directly contact the curb stone, which not only enhances the clamping stability, but also avoids scratching the surface of the curb stone.

[0034] The tension spring 23 is made of 65Mn spring steel with a wire diameter of 3mm, an effective number of coils of 8-10, a free length of 50-70mm, and an elastic modulus of 1.5-2N / mm. Two tension springs 23 are respectively installed at the ends of the two transport plates 16. The other ends of the two tension springs 23 are connected to both sides of the transport seat 15 via hooks. When not transporting the curbstone, the two transport plates 16 are held in place to prevent the opening angle between the two transport plates 16 from being too small, which would affect the clamping of the curbstone.

[0035] The auxiliary support mechanism 7 is used to support the curbstone during transport on sloping road sections. It is installed on the transport rod 14 of the transport telescopic rod 5 to provide auxiliary support for the curbstone. It includes an auxiliary rod 18, a sliding rod 19, a spring 21, a mounting base 24, a positioning guide rod 25, and a support plate 20. The auxiliary rod 18 is made of stainless steel square tube. One end is fixed to the position of the transport rod 14 near the transport mechanism by welding. The bottom is provided with a sliding groove for cooperating with the slide rod 19 and the positioning guide rod 25.

[0036] The slide rod 19 is made of stainless steel, with a diameter of 20mm and a length of 20-30cm. It is slidably connected to the sliding groove at the bottom of the auxiliary rod 18 and can move along the length of the telescopic rod 5. Its end is welded and fixed to the mounting base 24. A spring 21 is fitted on the slide rod 19, and the spring 21 is coaxially arranged with the slide rod 19.

[0037] Spring 21 is made of 65Mn spring steel with a wire diameter of 4mm, an effective number of coils of 6-8, a free length of 25-35mm, and an elastic modulus of 2.5-3N / mm. Its two ends are connected to the mounting base 24 and the end of the auxiliary rod 18, respectively. It achieves a buffering effect through elastic deformation to offset the tilting pressure of the curb.

[0038] Mounting base 24 is forged from aluminum alloy and has a T-shaped structure. One side is welded to slide rod 19 and positioning guide rod 25, and the other side has a hinge groove.

[0039] The positioning guide rods 25 are made of stainless steel and there are two of them. They are symmetrically arranged on both sides of the slide rod 19. One end is fixedly welded to the mounting base 24, and the other end is slidably connected to the positioning plates on both sides of the bottom of the auxiliary rod 18, which serves as a guide and prevents the mounting base 24 from shifting during the sliding process.

[0040] The support plate 20 is made of high-strength plastic material and is hinged to the hinge slot of the mounting base 24 through the hinge shaft. It can adaptively adjust the contact angle according to the inclination angle of the curb stone. The surface is provided with anti-slip texture and contacts the side of the curb stone close to the operating telescopic rod 3 to achieve stable support.

[0041] This tool works based on the lever principle and an adjustable structure, adaptable to different scenarios such as flat ground and slopes, and for moving curb stones of different sizes. The complete working process is as follows: 1. Based on the weight, size, and transport distance of the curbstone, loosen the set screws 22 on the operating cylinder 10 and the transport cylinder 13. For heavier curbstones, lengthen the operating rod 11 to increase the lever arm (reduce the difficulty of applying force); adjust the extension length of the sliding transport rod 14 according to the horizontal distance requirement of the curbstone, and tighten the set screws 22 after adjustment. The extension position is fixed by the friction between the end of the set screw and the rod body to prevent slippage during transport.

[0042] 2. Based on the placement height of the curbstone and the target installation height, select the corresponding limiting hole 9 on the limiting plate 8, insert the hinge shaft at the top of the tripod 4 into the limiting hole 9, and adjust the initial height of the transport mechanism 6 by changing the hinge position between the tripod 4 and the limiting plate 8 to ensure that the clamping plate 17 can be accurately aligned with the clamping part of the curbstone (generally the upper part of the curbstone to ensure balanced force). Confirm that the two transport plates 16 are in a naturally open state under the action of the tension spring 23, the spring 21 of the auxiliary support mechanism 7 is in a free extension and contraction state, the support plate 20 can rotate flexibly, and the wheel 1 rolls smoothly without jamming.

[0043] 3. The worker grips handle 12 (with anti-slip raised dots to enhance grip stability) with both hands and pushes the device to the curbstone via the rolling of wheels 1. This positions the two interlocking transport plates 16 on either side of the curbstone, ensuring the clamping plate 17 (wear-resistant rubber layer) is in close contact with the curbstone surface without shifting. The worker presses down on handle 12, transmitting force to the transport telescopic rod 5 via the telescopic rod 3. The transport telescopic rod 5 moves upward, and the transport mechanism 6, under upward pressure, causes the two interlocking transport plates 16 to rotate around their hinge axis, bringing them closer together and closing inward. The clamping plate 17 is in tight contact with the curbstone surface on both sides, and the anti-slip texture of the rubber layer enhances friction, allowing the clamping plate 17 to firmly grip the curbstone and prevent loosening; the rubber layer also prevents scratches on the curbstone surface.

[0044] 4. When transporting on a slope, if the curbstone tends to tilt due to gravity, the side of the curbstone contacts the support plate 20 and applies pressure, pushing the mounting base 24 towards the auxiliary rod 18. The slide rod 19 slides along the sliding groove at the bottom of the auxiliary rod 18, and the spring 21 is compressed to generate a buffering force, counteracting the tilting pressure of the curbstone. At the same time, the positioning guide rod 25 slides along the positioning plate of the auxiliary rod 18 to prevent the support plate 20 from shifting and ensure stable support direction. The support plate 20 adaptively adjusts its rotation angle through the hinge shaft, always maintaining contact with the side of the curbstone to form lateral support and prevent the curbstone from swaying or shifting during slope movement.

[0045] 5. After the device is securely clamped, the operator applies pushing or pulling force through handle 12, using wheels 1 to move the entire device and curbstone smoothly. During the movement, the rotating shaft 2 acts as the core connecting shaft to transmit force, and the tripod 4 maintains an isosceles triangle stability structure to prevent the device from tipping over; the fixed state of the operating telescopic rod 3 and the transport telescopic rod 5 ensures that the lever arm remains unchanged, the force is applied evenly, and the intensity of manual labor is reduced.

[0046] 6. After moving the device to the predetermined installation position of the curbstone, the worker lifts the handle 12 upwards, and the lever principle drives the transport telescopic rod 5 downwards. The transport mechanism 6 moves down accordingly, and the two clamps 17 lose the force of clamping the curbstone, thereby removing the curbstone and placing it in the installation position.

Claims

1. A curbstone transport tool, comprising a rotating axle (2) with wheels (1) rotatably connected to both ends, an operating telescopic rod (3) disposed in the middle of the rotating axle (2), a tripod (4) with both ends of its bottom hinged to the two ends of the rotating axle (2), a transport telescopic rod (5) hinged to the operating telescopic rod (3), and a transport mechanism (6) hinged to the end of the transport telescopic rod (5), characterized in that, It also includes an auxiliary support mechanism (7) installed on the transport telescopic rod (5) and acting on the curb; the transport telescopic rod (5) is provided with a limiting plate (8), the limiting plate (8) is provided with multiple limiting holes (9), and the top of the tripod (4) is hinged to the limiting hole (9).

2. The handling tool as described in claim 1, characterized in that, The telescopic rod (3) includes a rectangular operating cylinder (10) located in the middle of the rotating shaft (2) and an operating rod (11) slidably connected inside the operating cylinder (10); the end of the operating rod (11) is provided with a handle (12).

3. The handling tool as described in claim 2, characterized in that, The telescopic transport rod (5) includes a rectangular transport cylinder (13) hinged to the upper part of the rectangular operating cylinder (10) and a transport rod (14) slidably connected inside the transport cylinder (13); the limiting plate (8) is provided at the bottom of the transport cylinder (13).

4. The handling tool as described in claim 3, characterized in that, The transport mechanism (6) includes a transport seat (15) hinged to the end of the transport rod (14) and two transport plates (16) cross-hinged to the bottom of the transport seat (15); each of the two transport plates (16) is provided with a clamp (17) at the bottom of one end away from each other.

5. The handling tool as described in claim 3, characterized in that, The auxiliary support mechanism (7) includes an auxiliary rod (18) on the transport rod (14), a slide rod (19) slidably connected to the bottom of the auxiliary rod (18), a mounting seat (24) at the end of the slide rod (19), and a support plate (20) hinged to one side of the mounting seat (24). The slide rod (19) is fitted with a spring (21) at both ends connected to the mounting seat (24) and the auxiliary rod (18) respectively. The other side of the mounting seat (24) is provided with a positioning guide rod (25) that slides with the bottom of the auxiliary rod (18).

6. The handling tool as described in claim 3 or 4, characterized in that, Both the operating cylinder (10) and the transport cylinder (13) are threaded with set screws (22) that act on the operating rod (11) and the transport rod (14) respectively.

7. The handling tool as described in claim 4, characterized in that, Both of the transport plates (16) are provided with tension springs (23), and the ends of the two tension springs (23) are respectively connected to the two sides of the transport seat (15).

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