A road surface maintenance grading device for municipal works

Abstract

This utility model relates to the field of road surface maintenance technology in municipal engineering, and more particularly to a leveling device for road surface maintenance in municipal engineering. It solves the problem in existing technologies where the height adjustment mechanism lacks a locking device, leading to loosening of the adjustment components and loss of height control due to vibration during operation. The leveling device for road surface maintenance in municipal engineering includes two mounting frames and a mounting plate positioned between the two frames. Both sides of the bottom of each mounting frame are equipped with casters, and each mounting frame contains a lifting rod. The two ends of the lifting rod are connected to the interior of the mounting frame via a vertical guide structure, and the top of the lifting rod is connected to the top of the mounting frame via a vertical adjustment structure. This utility model, through the cooperation of the lifting rod and the detachable locking structure, achieves rigid fixation after adjustment, effectively preventing height changes caused by operational vibration and improving the stability and accuracy of the leveling operation.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering road surface maintenance technology, and in particular to a road surface leveling device for municipal engineering road surface maintenance. Background Technology

[0002] Municipal engineering is a crucial component of urban infrastructure construction and maintenance, encompassing multiple areas such as roads, bridges, drainage, lighting, and traffic facilities. It directly impacts urban operational efficiency and residents' quality of life. Roads, as the carriers of urban transportation, are constantly subjected to vehicle loads, climate changes, and material aging, making them highly susceptible to cracks, potholes, and settlement, severely affecting driving safety and comfort. Therefore, timely repair and surface smoothing of damaged road surfaces are essential in municipal engineering. Road surface smoothing devices, as key equipment for achieving efficient and high-quality repair operations, play an indispensable role in road maintenance and construction.

[0003] Existing technologies, such as utility model patent CN 212656076 U, disclose a road surface maintenance leveling device for municipal engineering, including a leveling frame, a limiting screw, a rotating wheel, an adjusting rod, a positioning shaft, a diesel vibrator, a leveling plate, and other components. The height is adjusted by the limiting screw, and the vibration function is used to level the road surface. The rotating wheel is used to move the device.

[0004] Although the device has a certain degree of adjustability and mobility, it still has significant drawbacks in practical applications: it uses a screw structure for height adjustment, which can achieve the lifting function, but it lacks a locking or positioning mechanism after the adjustment is in place. During the operation of the equipment, the high-frequency vibration generated by the diesel vibrator can easily cause the screw to loosen or even rotate in the opposite direction, causing the device to sink uncontrollably and affecting the leveling accuracy; continuous vibration will accelerate the wear of the screw thread, reduce the transmission efficiency, and in severe cases may cause mechanical failure and shorten the service life of the equipment.

[0005] Therefore, to address the shortcomings of existing technologies, we urgently need a road surface maintenance leveling device for municipal engineering to solve this problem. This new device should significantly improve the stability and reliability of the construction process, possess highly efficient vibration suppression and a high degree of self-locking capability, while better meeting the demands of modern urban road maintenance for high efficiency, high precision, and smooth operation, providing strong support for the sustainable development of the municipal engineering field. Utility Model Content

[0006] The purpose of this utility model is to provide a leveling device for road maintenance in municipal engineering, which solves the problem that the existing technology uses a screw structure for height adjustment. Although it can achieve the lifting function, it lacks a locking or positioning mechanism after the adjustment is in place. During the operation of the equipment, the high-frequency vibration generated by the diesel vibrator can easily cause the screw to loosen or even rotate in the opposite direction, resulting in the device height going out of control and sinking, which affects the leveling accuracy.

[0007] To achieve the above objectives, this utility model provides a road surface maintenance leveling device for municipal engineering, comprising two mounting frames and a mounting plate disposed between the two mounting frames;

[0008] Both of the mounting frames are equipped with casters on both sides of their bottom, and both mounting frames are equipped with lifting rods inside. The two ends of the lifting rods are connected to the inside of the mounting frames through vertical guide structures, and the top of the lifting rods is connected to the top of the mounting frames through vertical adjustment structures. A locking plate is connected to the center of one side of the inside of the mounting frame, and a locking structure that cooperates with the lifting rods is detachably connected to one side of the locking plate.

[0009] Both ends of the mounting plate are connected to the adjacent lifting rods through a connecting structure. The bottom of the mounting plate is provided with a flat plate, and the top of the mounting plate is equipped with a vibrating machine that cooperates with the flat plate.

[0010] The connecting structure includes a support plate bolted to the bottom of the flat plate, and one side of the support plate is fixedly connected to the side wall of the lifting rod.

[0011] Each of the two mounting frames is provided with a pull handle on one side away from each other, and the bottom of one side of the pull handle is fixedly connected to the side wall of the mounting frame with bolts.

[0012] The vertical guide structure includes a guide rod, the two ends of which are connected to the inner top and inner bottom of the mounting frame, respectively, and the end of the lifting rod is slidably engaged with the guide rod.

[0013] The vertical adjustment structure includes a lifting cylinder mounted on the top of the mounting frame, and the output end of the lifting cylinder is connected to the top of the lifting rod.

[0014] The locking plate has several symmetrically arranged insertion holes on one side. A positioning hole is provided at the center of one side of the locking plate between every two adjacent insertion holes. The locking structure includes a side plate. Two locking rods that are adapted to the insertion holes are fixedly connected to one side of the side plate. A positioning screw with one end threaded through the side plate and adapted to the positioning hole is provided at the center of one side of the side plate. Two locking holes that are adapted to the locking rods are provided on one side of the lifting rod.

[0015] This utility model discloses a road surface maintenance leveling device for municipal engineering. By setting up a lifting rod inside the mounting frame, and cooperating with a vertical guide structure and a vertical adjustment structure, it achieves flexible adjustment of the leveling plate height to meet the construction needs of different road repair thicknesses. Compared with the existing technology that only relies on screw adjustment without subsequent locking, this device rigidly limits the lifting rod through a detachable locking structure on the locking plate after adjustment. This effectively solves the technical problem of loosening of adjustment components, height loss control, or even reverse rotation caused by continuous vibration generated during the operation of the vibrator, significantly improving the structural stability and leveling accuracy of the device during operation. At the same time, since the lifting rod is locked, the vibration load no longer directly acts on the threads or transmission components of the vertical adjustment structure, avoiding mechanical wear and fatigue damage caused by high-frequency vibration, extending the service life of the adjustment mechanism, and reducing the equipment maintenance frequency and operating costs. In addition, the mounting plate is synchronously connected to the two lifting rods through the connecting structure, ensuring the integrity and levelness of the leveling plate during lifting and operation, preventing road surface unevenness defects caused by unilateral settlement or displacement, and further improving the construction quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0018] Figure 2 This is a structural schematic diagram of the flat plate and mounting plate according to an embodiment of the present utility model.

[0019] Figure 3 This is a structural schematic diagram of the lifting cylinder and guide rod according to an embodiment of the present utility model.

[0020] Figure 4 This is a schematic diagram of the insertion hole and positioning hole in an embodiment of the present invention.

[0021] Figure 5 This is a structural schematic diagram of the side plate and locking rod of an embodiment of the present utility model.

[0022] In the diagram: 1. Flat plate; 2. Mounting plate; 3. Vibrator; 4. Mounting frame; 5. Casters; 6. Support plate; 7. Lifting cylinder; 8. Guide rod; 9. Lifting rod; 10. Pull handle; 11. Locking plate; 12. Insertion hole; 13. Positioning hole; 14. Side plate; 15. Positioning screw; 16. Locking rod. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] Example 1

[0025] Please see Figure 1-5 As shown, a road surface maintenance leveling device for municipal engineering in this embodiment includes two mounting frames 4 and a mounting plate 2 disposed between the two mounting frames 4;

[0026] Both sides of the bottom of the two mounting frames 4 are equipped with casters 5, and both mounting frames 4 are equipped with lifting rods 9. The two ends of the lifting rods 9 are connected to the inside of the mounting frames 4 through vertical guide structures, and the top of the lifting rods 9 is connected to the top of the mounting frames 4 through vertical adjustment structures. A locking plate 11 is connected to the center of one side of the inside of the mounting frame 4, and a locking structure that cooperates with the lifting rods 9 is detachably connected to one side of the locking plate 11.

[0027] Both ends of the mounting plate 2 are connected to the adjacent lifting rod 9 through a connecting structure. The bottom of the mounting plate 2 is provided with a flat plate 1, and the top of the mounting plate 2 is equipped with a vibrator 3 that cooperates with the flat plate 1.

[0028] Workflow: First, move the device to the area of ​​road surface to be repaired. The machine is easily moved using the casters 5 located on both sides of the bottom of the two mounting frames 4. Once at the work position, the operator activates the vertical adjustment mechanism. This mechanism can be a manual screw, electric push rod, or hydraulic cylinder, driving the lifting rod 9 to slide up and down along the vertical guide structure. The vertical guide structure ensures that the lifting rod 9 remains stable and does not deviate during the lifting process. When the flat plate 1 descends to contact the road surface to be repaired and reaches the required construction height, the adjustment is stopped. Then, the locking structure is installed via a detachable connection on the locking plate 11 located at the center of one side inside the mounting frame 4. This locking structure can be a pin-type, bolt-type, or clamp-type mechanical locking device, used to rigidly fix the lifting rod 9 in its current position, preventing displacement during subsequent work. After completing the height adjustment and locking... The vibrator 3, installed on top of the mounting plate 2, is activated. The vibration is transmitted through the mounting plate 2 to the leveling plate 1 at the bottom, allowing the leveling plate 1 to compact and level the newly laid asphalt or concrete material under the action of the vibrator 3. At the same time, the entire machine can be slowly advanced along the construction direction via the moving wheels 5, achieving continuous road surface repair. The two ends of the mounting plate 2 are connected to the lifting rods 9 on both sides through the connecting structure, ensuring that the leveling plate 1 maintains a horizontal posture during lifting and locking, avoiding tilting problems caused by uneven force on one side. Throughout the operation, since the lifting rods 9 are fixed by the locking structure, even if the vibrator 3 generates high-frequency vibration, it will not be transmitted to the vertical adjustment structure, causing loosening or reverse rotation, thus ensuring the stability and accuracy of the leveling process. After the operation is completed, the locking structure can be removed, and the leveling plate 1 can be lifted to the transportation height through the vertical adjustment structure, facilitating the transfer of the device to the next construction point.

[0029] Example 2

[0030] Please see Figure 1-5 As shown in this embodiment, a road surface maintenance leveling device for municipal engineering includes a connecting structure comprising a support plate 6 bolted to the bottom of the leveling plate 1. One side of the support plate 6 is fixedly connected to the side wall of the lifting rod 9. Specifically, the fixed connection between the support plate 6 and the side wall of the lifting rod 9 allows the mounting plate 2 to form a stable lateral support structure with the lifting rod 9 through the support plates 6 at both ends. During the leveling operation, the vibration generated by the vibrator 3 is transmitted to the support plate 6 via the mounting plate 2, and then the support plate 6 evenly transmits the force to the lifting rod 9, preventing loosening or breakage of the connection due to stress concentration. At the same time, it ensures that the leveling plate 1 maintains overall rigidity and horizontal posture during operation, thereby improving the strength and stability of the connecting structure and ensuring the consistency of leveling accuracy.

[0031] The vertical guide structure includes a guide rod 8, with its two ends connected to the inner top and inner bottom of the mounting frame 4, respectively. The end of the lifting rod 9 is slidably engaged with the guide rod 8. Specifically, by connecting the two ends of the guide rod 8 to the inner top and inner bottom of the mounting frame 4, and with the end of the lifting rod 9 slidably engaged with the guide rod 8, the guide rod 8 provides a precise guide path for the lifting rod 9 when the vertical adjustment structure drives the lifting rod 9 to move up and down. This restricts its lateral offset and rotational freedom, making the lifting process smoother and more stable. It effectively avoids problems such as difficulty in adjustment or uneven force due to the tilting and jamming of the lifting rod 9. Especially under the condition of continuous vibration of the vibrator 3, it can still maintain the guiding accuracy, thereby enhancing the stability of the lifting action and the reliability of the guide.

[0032] Example 3

[0033] Please see Figure 1-5 As shown in this embodiment, a road surface maintenance leveling device for municipal engineering has two mounting frames 4, each with a pull handle 10 on one side away from each other. The bottom of one side of the pull handle 10 is bolted to the side wall of the mounting frame 4. Specifically, by bolting the bottom of one side of the pull handle 10 to the side wall of the mounting frame 4, the operator can hold the pull handle 10 during the movement of the device and manually pull to achieve smooth advancement or turning of the whole machine along the road surface. Especially in narrow sections or construction scenarios requiring precise positioning, this structure is easy to operate, reduces the labor intensity of single-person operation, and the bolted connection ensures the firmness of the pull handle 10 in long-term use, preventing it from falling off due to shaking and affecting safety, thus improving the ease of movement and controllability of the equipment.

[0034] The vertical adjustment structure includes a lifting cylinder 7 installed on the top of the mounting frame 4. The output end of the lifting cylinder 7 is connected to the top of the lifting rod 9. Specifically, by installing the lifting cylinder 7 on the top of the mounting frame 4 and connecting its output end to the top of the lifting rod 9, a stable and controllable thrust is provided by a pneumatic power source to drive the lifting rod 9 to rise and fall vertically along the guide rod 8. Compared with manual screw or hydraulic system, the cylinder has a fast response speed and is easy to control, which can quickly raise or lower the position of the leveling plate 1 to adapt to different repair layer thickness requirements. At the same time, the cylinder itself has a certain self-locking ability, which can maintain the position unchanged for a short time when the air supply stops. Combined with the subsequent locking structure, the safety is further improved, and the effect of improving the height adjustment efficiency and automation is achieved.

[0035] A plurality of insertion holes 12 are symmetrically provided on one side of the locking plate 11. A positioning hole 13 is provided at the center of one side of the locking plate 11 between every two adjacent insertion holes 12. The locking structure includes a side plate 14. Two locking rods 16 that are adapted to the insertion holes 12 are fixedly connected to one side of the side plate 14. A positioning screw 15 with one end threaded through the side plate 14 and adapted to the positioning hole 13 is provided at the center of one side of the side plate 14. Two locking holes adapted to the locking rods 16 are provided on one side of the lifting rod 9. Specifically, the insertion holes 12 and positioning holes 13 symmetrically provided on the locking plate 11 and the locking rods 14 are connected to the locking rods 16. The locking rod 16, the positioning screw 15, and the locking holes on the lifting rod 9 are designed to work together. After the lifting rod 9 is adjusted to the correct position, the two locking rods 16 on the side plate 14 are inserted into the insertion holes 12 of the locking plate 11 and simultaneously passed into the corresponding locking holes on the side wall of the lifting rod 9 to initially fix the position of the lifting rod 9. Then, the positioning screw 15, which passes through the side plate 14 and engages with the positioning hole 13, is tightened to achieve axial compression of the side plate 14, thereby forming a multi-point constraint mechanical locking structure. This effectively prevents the lifting rod 9 from moving up and down or backing away under vibration, achieving the effects of simple structure, convenient assembly and disassembly, firm locking, and strong vibration resistance.

[0036] Workflow: When using the road surface maintenance leveling device for municipal engineering, the operator first applies traction by pulling the handles 10 on the opposite sides of the two mounting frames 4. The mobile wheels 5 installed on both sides of the bottom of the mounting frames 4 allow for flexible movement of the entire machine on the construction site, pushing the device to the area to be repaired. Upon reaching the work position, the lifting cylinder 7 installed on the top of the mounting frame 4 is activated. As a vertical adjustment structure, its output end pushes the lifting rod 9 downwards along the guide rod 8. The guide rod 8 is fixedly connected at both ends to the inner top and inner bottom of the mounting frame 4, forming a vertical guide structure to ensure the lifting rod 9 maintains a straight line during lifting, avoiding lateral deviation or jamming. When the leveling plate 1 descends with the lifting rod 9 to contact the newly laid asphalt or concrete layer and reach the required construction height, the lifting cylinder 7 is stopped, and a locking operation is performed: the two locking rods 16 on the side plate 14 are aligned with the symmetrically arranged insertion holes 12 on the locking plate 11 and simultaneously inserted into the locking holes on the side wall of the lifting rod 9. After initial positioning, the device is rotated... A positioning screw 15, which penetrates the side plate 14 and engages with the positioning hole 13 at the center of one side of the locking plate 11, axially presses the side plate 14, thereby rigidly fixing the lifting rod 9 in its current position and achieving vibration-resistant locking. After height adjustment and locking are completed, the vibrator 3 installed on the top of the mounting plate 2 is started. The vibration is transmitted through the mounting plate 2 to the bottom leveling plate 1, compacting and leveling the loose material. Both ends of the mounting plate 2 are fixedly connected to the side wall of the adjacent lifting rod 9 through the support plate 6. This connection structure ensures that the leveling plate 1 is subjected to uniform force. The machine maintains a stable posture. During the leveling operation, the operator can slowly push the machine forward by pulling handle 10 to achieve continuous road surface repair. Throughout the operation, the lifting rod 9 is firmly locked by the locking structure, so even if the vibrator 3 generates high-frequency vibration, the lifting structure will not loosen or retract, ensuring construction accuracy. After the operation is completed, the positioning screw 15 is loosened in the opposite direction, the locking rod 16 is pulled out to release the lock, and the lifting rod 9 is retracted through the lifting cylinder 7 to raise the leveling plate 1 to the transportation height, making it easy to transfer the device to the next construction point.

[0037] Beneficial effects: By setting two mounting frames 4 as the main support structure and installing casters 5 on both sides of their bottom, the machine can be easily moved on the construction site, improving the operational flexibility of the equipment; the lifting rod 9 set inside the mounting frame 4, together with the lifting cylinder 7 at the top, serves as a vertical adjustment structure, which can quickly and accurately adjust the working height of the leveling plate 1 to adapt to the needs of road repair of different thicknesses; the two ends of the lifting rod 9 slide with the guide rod 8, and the guide rod 8 is fixed to the upper and lower ends inside the mounting frame 4, forming a vertical guide structure, which effectively ensures the stability and straightness of the lifting process and prevents shaking caused by uneven load or vibration; the mounting plate 2 is set between the two mounting frames 4 and is fixedly connected to the side wall of the lifting rod 9 through the support plate 6. This connection structure not only transmits vibration but also enhances the overall rigidity, preventing the leveling plate 1 from twisting or tilting during operation; the bottom of the leveling plate 1 directly acts on the road to be repaired. The planar layer, in conjunction with the top vibrating machine 3, achieves efficient compaction and leveling. Crucially, the locking plate 11 on the inner side of the mounting frame 4 has insertion holes 12 and positioning holes 13. Together with the detachable side plate 14, locking rod 16, positioning screw 15, and locking holes on the lifting rod 9, it forms a mechanical locking structure. After adjustment, the lifting rod 9 is rigidly fixed, completely solving the problems of vibration loosening and height loss of control caused by relying solely on screw adjustment without subsequent locking in existing technologies. This significantly improves the structural stability and safety of the equipment under high-frequency vibration conditions. The locking structure uses a pin + screw clamping method, which is easy to assemble and disassemble, has high repeatability and positioning accuracy, and strong vibration resistance, extending the service life of adjusting components such as the lifting cylinder 7. The pull handle 10 is fixed to the outside of the mounting frame 4 with bolts, facilitating manual operation of the entire machine, especially suitable for precise positioning in narrow or complex road conditions.

[0038] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A road surface leveling device for municipal engineering maintenance, characterized in that, include: Two mounting frames and a mounting plate positioned between the two mounting frames; Both of the mounting frames are equipped with casters on both sides of their bottom, and both mounting frames are equipped with lifting rods inside. The two ends of the lifting rods are connected to the inside of the mounting frames through vertical guide structures, and the top of the lifting rods is connected to the top of the mounting frames through vertical adjustment structures. A locking plate is connected to the center of one side of the inside of the mounting frame, and a locking structure that cooperates with the lifting rods is detachably connected to one side of the locking plate. Both ends of the mounting plate are connected to the adjacent lifting rods through a connecting structure. The bottom of the mounting plate is provided with a flat plate, and the top of the mounting plate is equipped with a vibrating machine that cooperates with the flat plate.

2. The road surface leveling device for municipal engineering maintenance according to claim 1, characterized in that, The connecting structure includes a support plate bolted to the bottom of the flat plate, one side of which is fixedly connected to the side wall of the lifting rod.

3. A road surface leveling device for municipal engineering maintenance according to claim 1, characterized in that, Each of the two mounting frames is provided with a pull handle on one side away from each other, and the bottom of one side of the pull handle is fixedly connected to the side wall of the mounting frame with bolts.

4. A road surface leveling device for municipal engineering maintenance according to claim 2, characterized in that, The vertical guide structure includes a guide rod, the two ends of which are connected to the inner top and inner bottom of the mounting frame, respectively, and the end of the lifting rod is slidably engaged with the guide rod.

5. A road surface maintenance leveling device for municipal engineering according to claim 3, characterized in that, The vertical adjustment structure includes a lifting cylinder mounted on the top of the mounting frame, the output end of which is connected to the top of the lifting rod.

6. A road surface leveling device for municipal engineering maintenance according to claim 5, characterized in that, The locking plate has several symmetrically arranged insertion holes on one side. A positioning hole is provided at the center of one side of the locking plate between every two adjacent insertion holes. The locking structure includes a side plate. Two locking rods that are adapted to the insertion holes are fixedly connected to one side of the side plate. A positioning screw with one end threaded through the side plate and adapted to the positioning hole is provided at the center of one side of the side plate. Two locking holes that are adapted to the locking rods are provided on one side of the lifting rod.

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