A small-sized rapid road pothole repair and compaction device

Abstract

This utility model discloses a small-sized rapid repair and compaction device for road potholes, relating to the field of road construction technology. It includes a protective cover and a hammer, which is vertically slidably inserted inside the protective cover. A spring elastically connects the top of the hammer to the inner top wall of the protective cover, and the hammer moves downwards under the spring force. A pair of follower rods are symmetrically arranged on the outer wall of the hammer. The beneficial effects of this utility model are: the device achieves multi-component synergy through the cooperation of the follower rods and the cam surface, and with the help of the spring force; the cam's gradually curved surface smoothly lifts the hammer, and the anti-collision gap design between the concave arc of the stepped surface and the gradually curved surface and the follower rods reduces contact wear, thus reducing frictional loss between the cam and the follower rods, extending the equipment's lifespan, and improving compaction efficiency through continuous tamping action, while ensuring uniform filler density, thus balancing the device's durability and operational quality.

Description

Technical Field

[0001] This utility model relates to the field of road construction technology, specifically a small-sized rapid repair and compaction device for road potholes. Background Technology

[0002] In the rapid repair of small road potholes, the effective compaction of the fill material directly affects the repair quality and the service life of the road surface. In existing technologies, the core compaction action of some compaction devices is generally achieved through a cam structure to realize continuous compaction. Specifically, the device typically includes a drive mechanism, a cam driven by the drive mechanism to rotate, and compaction components (such as tampers, compaction hammers, etc.) that cooperate with the cam. During operation, the drive mechanism drives the cam to rotate, and the eccentric structure of the cam periodically lifts the compaction components. When the cam rotates to a specific angle, the compaction components lose support and rapidly fall towards the fill material in the pothole under their own weight, achieving a compaction effect through impact. As the cam continues to rotate, this process is repeated continuously, thus completing the continuous compaction operation.

[0003] However, the aforementioned cam-based compaction devices have shortcomings in practical applications: Because the compaction components need to generate sufficient impact force to ensure compaction effectiveness, their weight is typically substantial. When these components fall under gravity, deviations in their trajectory can cause them to rub against the cam rim surface, resulting in intense compression and friction. Over time, the cam rim is prone to wear, deformation, and even cracking due to repeated exposure to large impact loads and friction. This not only reduces the cam's service life but also leads to decreased and inconsistent movement accuracy of the compaction components, consequently affecting the compaction frequency and the stability of the compaction effect. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a small-sized rapid repair and compaction device for road potholes.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A small-sized rapid repair and compaction device for road potholes, including a protective cover;

[0007] The pressure hammer is vertically slidably installed inside the protective cover. Its top end is elastically connected to the top wall of the protective cover by a spring. The pressure hammer always moves downward under the action of the spring force. A pair of follower rods are symmetrically provided on the outer wall of the pressure hammer.

[0008] The control mechanism includes:

[0009] A pair of cams are rotatably mounted inside a protective cover via a rotating shaft, and their curved walls are in contact with corresponding follower rods. The curved walls of the cams are composed of a gradually curved surface and a stepped surface connecting the beginning and end of the gradually curved surface. The beginning and end of the gradually curved surface are located on the same radial direction of the rotating shaft to form a height difference, and the stepped surface is a concave arc shape to form an anti-scrubbing structure.

[0010] The power unit is located inside the protective cover and is connected to two cam drives;

[0011] During the rotation of the cam driven by the power component, the gradually curved surface contacts and squeezes the follower rod, causing the pressure hammer to move upward and form a lifting and accumulating action. After the end of the gradually curved surface separates from the follower rod, the pressure hammer falls vertically under the action of the spring force, forming a continuous compaction action relative to the road surface.

[0012] Preferably, when the bottom surface of the hammer contacts the road surface to complete the compaction action, an anti-collision gap is formed between the follower rod and the beginning of the gradually curved surface.

[0013] Preferably, the top of the hammer is always slidably covered with a protective cover during the lifting and lowering process.

[0014] Preferably, the outer wall of the hammer is provided with at least one anti-deviation protrusion in the vertical direction, and the top of the protective cover is provided with a guide groove that cooperates with the anti-deviation protrusion.

[0015] Preferably, the power assembly includes a dual-axis motor, a pair of drive shafts, and a pair of synchronous pulley sets. The two drive shafts are respectively located on the two output shafts of the dual-axis motor, and the two synchronous pulley sets are respectively located between the corresponding drive shaft and the corresponding rotating shaft.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This device achieves the coordinated action of multiple components by cooperating with the follower rod and the curved surface of the cam, and by relying on the elastic force of the spring; wherein, the cam's gradually curved surface smoothly lifts the pressure hammer, and the design of the anti-collision gap between the concave arc of the stepped surface and the gradually curved surface and the follower rod reduces contact wear, which not only reduces the frictional loss between the cam and the follower rod and extends the service life of the equipment, but also improves the compaction efficiency through continuous tamping action, while ensuring the uniform density of the filler, thus taking into account both the durability of the device and the quality of operation. Attached Figure Description

[0017] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2This is a schematic diagram of the relevant structure of the cam in this utility model;

[0020] Figure 3 This is a partial structural schematic diagram of the present invention;

[0021] Figure 4 This is a cross-sectional view of the present invention.

[0022] The diagram is labeled as follows: 1. Protective cover; 2. Pressure hammer; 21. Spring; 22. Follower rod; 23. Anti-deviation convex strip; 3. Control mechanism; 31. Cam; 310. Gradient curved surface; 311. Stepped surface; 32. Power component; 320. Dual-axis motor; 321. Drive shaft; 322. Synchronous pulley set. Detailed Implementation

[0023] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0024] Example

[0025] like Figures 1-4 As shown, a small-scale rapid road pothole repair and compaction device includes a protective cover 1, which mainly serves a protective function, effectively blocking debris such as gravel and dust that may be splashed up by the compaction hammer 2 during operation, ensuring the safety of the surrounding environment and operators. At the same time, it provides space support for the installation and operation of other components inside the device, ensuring the orderly combination and coordinated operation of all components.

[0026] The pressure hammer 2 is vertically slidably installed inside the protective cover 1. As a component that directly acts on the filler in the road pothole, it is the core of achieving the compaction function. A spring 21 is elastically connected between its top and the inner top wall of the protective cover 1. The pressure hammer 2 always moves downward under the elastic force of the spring 21. A pair of follower rods 22 are symmetrically provided on the outer wall of the pressure hammer 2.

[0027] Control mechanism 3, which includes:

[0028] A pair of cams 31 are rotatably mounted inside the protective cover 1 via a rotating shaft, with their curved walls fitting against the corresponding follower rods 22. The follower rods 22, which are symmetrically mounted on the outer wall of the hammer 2, fit tightly against the curved walls of the cams 31, and can accurately transmit the rotational motion of the cams 31, so that the hammer 2 accurately responds to the action of the cams 31, achieving stable and regular lifting and lowering.

[0029] The cam 31 curved wall is composed of a gradually curved surface 310 and a stepped surface 311 connecting the beginning and end of the gradually curved surface 310. The beginning and end of the gradually curved surface 310 are on the same radial direction of the rotating shaft, forming a height difference. This height difference determines the lifting height of the hammer 2, which in turn affects its impact energy when it falls. The stepped surface 311 is a concave arc shape to form an anti-collision structure, so that the follower rod 22 will not come into contact with the concave stepped surface 311 during the falling process, thereby preventing the follower rod 22 from touching the stepped surface 311 and affecting the continuity of the falling of the hammer 2.

[0030] The power assembly 32 is located inside the protective cover 1 and is connected to the two cams 31 via a transmission. The power assembly 32 includes a dual-shaft motor 320, a pair of drive shafts 321, and a pair of synchronous pulley sets 322. The two drive shafts 321 are respectively located on the two output shafts of the dual-shaft motor 320, and the two synchronous pulley sets 322 are respectively located between the corresponding drive shafts 321 and the corresponding rotating shafts. This achieves efficient and stable power transmission, ensuring that the two cams 31 can rotate synchronously and in a coordinated manner, thereby enabling the pressure hammer 2 to obtain stable and continuous up-and-down movement, ensuring a uniform and consistent compaction effect on road potholes. In addition, the synchronous pulley sets 322 can be selected from structures such as synchronous pulley-synchronous belt or sprocket-chain.

[0031] During the rotation of the cam 31 driven by the power component 32, the gradually changing curved surface 310 gradually contacts and squeezes the follower rod 22, smoothly converting the rotational motion of the cam 31 into the upward movement of the hammer 2, thus achieving the lifting and energy storage action. After the end of the gradually changing curved surface 310 disengages from the follower rod 22, the elastic force of the spring 21, combined with the push of the cam 31, causes the hammer 2 to fall, and with the kinetic energy converted from the elastic potential energy stored in the spring 21, as well as its own gravity, it generates a strong impact force on the filler in the road pothole, thereby achieving efficient compaction of the filler.

[0032] like Figure 2 As shown, when the bottom surface of the hammer 2 contacts the road surface to complete the compaction action, an anti-collision gap is formed between the follower rod 22 and the beginning of the gradually curved surface 310. This can effectively prevent excessive compression and friction between the follower rod 22 and the cam 31 when the hammer 2 falls to the lowest point, significantly extending the service life of the cam 31, while ensuring the stability and reliability of the device operation.

[0033] During the lifting and lowering process, the top of the hammer 2 always slides through the protective cover 1; the outer wall of the hammer 2 is provided with at least one anti-deviation protrusion 23 in the vertical direction, and the top of the protective cover 1 is provided with a guide groove that cooperates with the anti-deviation protrusion 23. During the lifting and lowering process of the hammer 2, it can effectively limit its horizontal displacement, ensure that the hammer 2 always moves in the vertical direction, improve the accuracy and stability of compaction, and avoid uneven compaction or damage to the road surface around the pothole due to the deviation of the hammer 2.

[0034] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A small-scale rapid repair and compaction device for road potholes, characterized in that, include: Protective shield; The pressure hammer is vertically slidably installed inside the protective cover. Its top end is elastically connected to the top wall of the protective cover by a spring. The pressure hammer always moves downward under the action of the spring force. A pair of follower rods are symmetrically provided on the outer wall of the pressure hammer. The control mechanism includes: A pair of cams are rotatably mounted inside a protective cover via a rotating shaft, and their curved walls are in contact with corresponding follower rods. The curved walls of the cams are composed of a gradually curved surface and a stepped surface connecting the beginning and end of the gradually curved surface. The beginning and end of the gradually curved surface are located on the same radial direction of the rotating shaft to form a height difference, and the stepped surface is a concave arc shape to form an anti-scrubbing structure. The power unit is located inside the protective cover and is connected to two cam drives; During the rotation of the cam driven by the power component, the gradually curved surface contacts and squeezes the follower rod, causing the pressure hammer to move upward and form a lifting and accumulating action. After the end of the gradually curved surface separates from the follower rod, the pressure hammer falls vertically under the action of the spring force, forming a continuous compaction action relative to the road surface.

2. The small-sized rapid road pothole repair and compaction device according to claim 1, characterized in that: When the bottom surface of the pressure hammer contacts the road surface to complete the compaction action, an anti-collision gap is formed between the follower rod and the beginning of the gradually curved surface.

3. The small-sized rapid road pothole repair and compaction device according to claim 2, characterized in that: During the lifting and lowering process, the top of the pressure hammer is always slidably fitted with a protective cover.

4. The small-sized rapid road pothole repair and compaction device according to claim 1, characterized in that: The outer wall of the pressure hammer is provided with at least one anti-deviation protrusion along the vertical direction, and the top of the protective cover is provided with a guide groove that cooperates with the anti-deviation protrusion.

5. A small-scale rapid road pothole repair and compaction device according to claim 1, characterized in that: The power assembly includes a dual-axis motor, a pair of drive shafts, and a pair of synchronous pulley sets. The two drive shafts are respectively located on the two output shafts of the dual-axis motor, and the two synchronous pulley sets are respectively located between the corresponding drive shaft and the corresponding rotating shaft.

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