Simple dustproof device for breaking pavement cannon head
By using a semi-enclosed structure where the lid and wall are integrally formed and a flexible suspension rope, the problem of dust diffusion during the breaking process of the barrel head is solved, achieving the effects of simplified installation, reduced costs, and extended service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 3 GRP CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-19
AI Technical Summary
During the current road surface demolition process, dust and debris spread severely. Traditional dust suppression devices are complex in structure, costly, cumbersome to operate, and difficult to adapt to different types of demolition heads, affecting the construction environment and the health of workers.
It adopts a semi-enclosed structure with the lid and wall molded as one piece, combined with a flexible suspension rope, symmetrical vertical fixing of the lifting rings, rubber pads on the inner wall of the insertion port, adaptable to the size of the chisel, and transparent material for easy observation, simplifying installation and adapting to multiple models.
It effectively limits dust spread, simplifies installation steps, reduces manufacturing costs, extends equipment life, and ensures operational stability and visible operation.
Smart Images
Figure CN224253784U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of environmental protection devices for demolition projects, specifically relating to a simple dust prevention device for road surface demolition. Background Technology
[0002] During demolition work, when using a blasting head to break through road surfaces or concrete structures, the high-frequency vibration of the drill rod impacts the work surface, generating a large amount of dust and debris that spreads directly in all directions, causing environmental pollution in the construction area. Current technologies generally lack effective dust suppression devices for blasting heads, relying only on water spraying or simple shielding. However, these methods are unsuitable for the dynamic operation of blasting heads: on the one hand, the continuous vibration of the drill rod causes shielding devices to easily fall off or be damaged; on the other hand, traditional dustproof structures are complex, bulky, and cumbersome to install, making it difficult to adapt to the rapid switching requirements of different blasting head models. Furthermore, the spread of dust and debris not only affects the construction environment but also threatens the respiratory health of workers.
[0003] Chinese Patent CN221072803U discloses a dust-reducing and splash-proof structure for a hydraulic breaker, comprising a hydraulic breaker body with a protective cover at its bottom and a connecting assembly at its top. The connecting assembly includes a first pull plate, two sets of first pull plates fixedly connected to one end of a first slider, one set of first sliders fixedly connected to one end of a first spring, and the other ends of both sets of first springs fixedly connected to one end of a spring connecting plate. Through the structural design of the connecting assembly, the protective cover is connected and installed, solving the problem of a large amount of debris splashing during the operation of the hydraulic breaker. The protective cover effectively prevents these debris from injuring pedestrians, and the connecting assembly provides a more stable connection between the protective cover and the hydraulic breaker, preventing the protective cover from falling off due to excessive vibration during operation. The aforementioned device requires multiple components to work together, resulting in a complex structure, high manufacturing costs, and susceptibility to malfunctions due to spring fatigue or slider jamming, increasing maintenance difficulty. Furthermore, it is fixed to the breaker body via connecting components, requiring adjustments to components such as sliders and springs during installation, making the operation cumbersome and difficult to adapt to different equipment models. Summary of the Invention
[0004] The purpose of this invention is to solve the above-mentioned prior art, reduce the manufacturing cost of dustproof devices, and reduce the difficulty of assembly and operation.
[0005] The technical solutions adopted in this utility model are as follows:
[0006] A simple dustproof device for road surface demolition includes: a barrel cover, which has a disc-shaped structure;
[0007] The barrel wall is integrally formed with the barrel lid, and extends downward from the outer edge of the barrel lid to form a cylindrical structure;
[0008] The insertion port is located in the center area of the bucket lid and is a circular through hole that penetrates the bucket lid;
[0009] The lifting rings are symmetrically fixed to the outer edges of both sides of the bucket lid and are perpendicular to the surface of the bucket lid.
[0010] The hoisting rope passes through the hoisting rings on both sides and then wraps around the connecting rod of the hammer.
[0011] The barrel wall and the barrel lid together form a semi-enclosed space. The insertion port is used for the drill bit to pass through and extend into the working surface. The lifting rope suspends the device below the connecting rod through the lifting ring, so that the barrel wall surrounds the working area of the drill bit.
[0012] By adopting the above technical solution, a semi-enclosed space is formed by the barrel lid and barrel wall, directly covering the drilling area. Combined with the suspension rope below the connecting rod, the device is linked with the drill head, limiting the range of dust diffusion. The insertion port is centered and matches the shape of the drill rod, ensuring that the device moves stably during operation and avoiding displacement and dust leakage. The lifting rings are symmetrically and vertically fixed, so that the suspension force is evenly distributed, preventing the device from tilting or shaking. At the same time, the installation steps are simplified, and the device can be quickly positioned without complicated tools.
[0013] Furthermore, the barrel lid and barrel wall are an integral plastic structure, formed in one piece by injection molding, and the size of the insertion port is adapted to the size of the drill bit.
[0014] By adopting the above technical solutions, the barrel lid and barrel wall are integrally molded using injection molding, eliminating the risk of dust leakage caused by seams and directly improving dustproof sealing; the insertion port size is compatible with the drill rod, eliminating the need for additional adjustment or customized parts, covering various common drill head models, and reducing the complexity of user operation; the one-piece plastic structure requires no assembly, reducing production steps, while avoiding the weakening of strength caused by welding or bolt connections, ensuring that the device is lightweight and durable as a whole.
[0015] Furthermore, the inner wall of the insertion port is provided with an annular rubber gasket, the inner diameter of which is in clearance fit with the outer diameter of the drill rod.
[0016] By adopting the above technical solution, the annular rubber gasket fills the dynamic gap between the drill rod and the insertion port, preventing fine dust from leaking out through the gap; its elastic material allows the drill rod to undergo slight deformation when vibrating at high frequency, avoiding hard friction that causes wear on the device or drill rod surface and extending service life; the gap fit can achieve quick connection without strict alignment, simplifying the installation process, while retaining the necessary space for the drill rod to move during operation.
[0017] Furthermore, the lifting rings are fixed at symmetrical positions on both outer edges of the bucket lid, and the axis of the lifting rings is perpendicular to the plane of the bucket lid.
[0018] By adopting the above technical solution, the lifting rings are symmetrically fixed to the outer edges of both sides of the bucket lid, so that the device is subjected to balanced force when suspended, avoiding tilting or displacement of the device due to unilateral tension, and ensuring that the bucket wall always vertically covers the working area of the chisel; the axis of the lifting ring is perpendicular to the plane of the bucket lid, so that the direction of the tension of the lifting rope is distributed along the direction of gravity of the device, reducing the impact of lateral force on the welding point and enhancing the connection reliability between the lifting ring and the bucket lid; the symmetrical layout and vertical force design together reduce the risk of metal fatigue caused by vibration and extend the service life of the device in high-frequency working environments.
[0019] Furthermore, the suspension rope is a flexible braided rope, with its two ends passing through the connecting rod at the bottom of the lifting ring and the hammer, respectively.
[0020] By adopting the above technical solutions, the flexible braided rope can freely expand and contract with the vibration of the blasting head, buffering the impact of the operation and preventing the device from falling off due to rigid tension; the design of two sections passing through the lifting ring and connecting rod forms a ring-shaped fixation, dispersing the stress points of the lifting rope and reducing the risk of unilateral wear; the flexible material allows for quick adjustment of the suspension height and tension, adapting to different working depth requirements, and achieving precise alignment of the device and the drill rod without additional tools.
[0021] Furthermore, the barrel lid and barrel wall are made of transparent polycarbonate, and at least four connecting rods are evenly arranged on the hammer.
[0022] By adopting the above technical solution, the transparent polycarbonate material allows operators to directly observe the status of the drill rod operation and the breaking progress, avoiding misoperation or untimely adjustment due to obstruction; the four evenly distributed connecting rods provide multiple anchor points for the hoisting rope, dispersing the concentrated load when the device is suspended, preventing excessive force on a single point from causing deformation or breakage of the connecting rod, while enhancing the balance of the device during vibration and preventing the barrel wall from tilting and leaking dust due to uneven load.
[0023] This utility model has the following beneficial effects:
[0024] 1. This utility model forms a semi-enclosed space by integrally molding the lid and the wall of the barrel, covering the drilling area, eliminating the problem of dust leakage at the joints of traditional devices, and directly limiting the range of dust diffusion;
[0025] 2. This utility model uses symmetrical and vertically fixed hanging rings on both sides of the outer edge of the bucket lid, combined with the suspension method of flexible hanging ropes wrapped around the connecting rod, so that the device is evenly stressed and stable, simplifying the installation steps and preventing detachment or displacement caused by vibration.
[0026] 3. This utility model dynamically fills the working gap by using the annular rubber gasket on the inner wall of the insertion port to fit the gap between the gasket and the drill rod, reducing dust overflow and buffering vibration and impact, and avoiding hard friction that could cause wear on the device or drill rod.
[0027] 4. This utility model achieves visualization of the working status and dispersion of the suspended load through the design of a transparent barrel lid and barrel wall with multiple connecting rods evenly distributed, preventing single-point force imbalance and ensuring that the device maintains vertical coverage and balance during dynamic operation. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0029] Figure 2 This is a schematic diagram of the installation structure of the lifting ring of this utility model;
[0030] Figure 3 This is a cross-sectional view of the present invention.
[0031] Wherein: 1-hammer; 2-connecting rod; 3-lifting rope; 4-lifting ring; 5-chisel rod; 6-bucket lid; 7-bucket wall; 8-insertion port. Detailed Implementation
[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
[0033] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.
[0034] Reference Figure 1 , Figure 2 , Figure 3As can be seen, this utility model discloses a simple dustproof device for road surface demolition. The lid 6 is disc-shaped, and the barrel wall 7 extends vertically downward from the outer edge of the lid 6 to form a cylindrical structure. The two are integrally molded by injection molding to form a semi-enclosed space covering the working area of the drill bit 5. The insertion port 8 is opened in the center of the lid 6 and is a circular through hole for the drill bit 5 to pass through and reach the working surface. Its inner wall is provided with an annular rubber gasket, which is fitted with the outer diameter of the drill bit 5 with a clearance, allowing for slight deformation of the drill bit during vibration and filling the dynamic gap to reduce dust escape. Metal lifting rings 4 are symmetrically welded to the outer edges of both sides of the lid 6. The axis of the lifting rings 4 is perpendicular to the plane of the lid to ensure that the force direction is distributed along gravity. The lifting rope 3, made of flexible braided rope, passes through the lifting rings 4 on both sides and is wrapped around and fixed to the connecting rod 2 at the bottom of the hammer 1. The connecting rod 2 has at least four anchor points evenly distributed on the hammer 1, and the load is distributed by fixing multiple anchor points. The lid 6 and the barrel wall 7 are made of transparent polycarbonate material to make the working status visible.
[0035] The lid 6 and the barrel wall 7 are integrally injection molded, eliminating the risk of dust leakage due to the lack of seams. The semi-enclosed space directly covers the working area of the drill rod 5, limiting the spread of dust. The insertion port 8 is centered and its size is adapted to the drill rod 5, ensuring the device moves stably and avoiding deviation.
[0036] The lifting rings 4 are symmetrically and vertically welded to both sides of the bucket lid 6. Combined with the suspension method of the flexible lifting rope 3 surrounding the connecting rod 2, the device is subjected to uniform force, reducing the impact of lateral tension on the welding point. At the same time, the flexible lifting rope 3 can be adjusted for tightness through a sliding buckle to buffer high-frequency vibration impact and prevent it from falling off.
[0037] The rubber gasket on the inner wall of the insertion port 8 elastically fills the gap between the drill rod 5 and the device, preventing fine dust from spilling out, while also buffering the hard friction of the drill rod 5 vibration on the structure and extending the life of the device; the gap fit design simplifies the installation process, allowing for quick connection without precise alignment.
[0038] The transparent polycarbonate material allows operators to observe the working status of the drill rod 5 in real time, avoiding blind operation; the evenly distributed anchor points of the multiple connecting rods 2 disperse the load of the hoisting rope 3, preventing the connecting rod from deforming or the device from tilting due to excessive force at a single point, and ensuring that the barrel wall 7 always vertically surrounds the working surface.
[0039] In one embodiment, during assembly, a flexible braided suspension rope 3 of appropriate length is selected according to the cannon head model. Both ends of the rope 3 are passed through symmetrically welded vertical lifting rings 4 on both sides of the barrel cover 6. The rope 3 is then wrapped around and fixed to the evenly distributed connecting rods 2 at the bottom of the cannon head hammer 1. The tightness of the rope is adjusted using sliding buckles or knots, suspending the device below the connecting rods 2. Next, the cannon head drill rod 5 is inserted through the insertion port 8 in the center of the barrel cover 6. The annular rubber gasket on the inner wall of the insertion port 8 is fitted with the outer diameter of the drill rod 5 to ensure that the drill rod 5 can vibrate freely and the device operates accordingly. Finally, the length of the suspension rope 3 is adjusted so that the barrel wall 7 completely surrounds the working area of the drill rod 5 tip, forming a semi-enclosed dustproof space. During installation, the transparent polycarbonate barrel cover 6 and barrel wall 7 facilitate observation of the drill rod 5's alignment. The symmetrical lifting rings 4 design ensures even force distribution and prevents tilting. The entire process requires no tools, can be quickly completed by a single person, and is compatible with various cannon head models.
[0040] In one embodiment, the lid 6 and the wall 7 are integrally molded using an injection molding process, forming a semi-enclosed cylindrical structure that directly covers the working area of the drill rod 5, limiting the spread of dust. An insertion port 8 is located at the center of the lid 6, allowing the drill rod 5 to penetrate the working surface. The annular rubber gasket on the inner wall of the lid 8 fits with the outer diameter of the drill rod 5, dynamically filling gaps caused by operational vibrations and preventing fine dust from escaping. Lifting rings 4 are symmetrically and vertically fixed to the outer edges of both sides of the lid 6. The lifting rope 3 passes through the lifting rings 4 and is then wrapped around and fixed to the connecting rod 2. Flexible suspension allows the device to move synchronously with the vibration of the drill head, ensuring that the wall 7 always vertically covers the working surface, preventing dustproof failure due to misalignment. The transparent design of the lid 6 and the wall 7 allows operators to observe the working status of the drill rod 5 in real time and adjust the device position promptly, indirectly ensuring the accuracy of dustproof coverage. Through the synergistic design of physical shielding, dynamic sealing, and stable suspension, all components effectively suppress dust diffusion, meeting the dustproof requirements under high-frequency vibration operations.
[0041] Working principle: The lid 6 and the barrel wall 7 are integrally molded through injection molding to form a semi-enclosed cylindrical structure, directly covering the working area of the drill bit 5 and limiting the spread of dust; the insertion port 8 is opened in the center of the lid 6, and the inner wall is provided with an annular rubber gasket, which is fitted with the outer diameter of the drill bit 5 with a gap, allowing the drill bit to produce a slight deformation when vibrating at high frequency, dynamically filling the working gap to reduce dust overflow; the lifting rings 4 are symmetrically and vertically welded to the outer edges of both sides of the lid 6, and the flexible braided lifting rope 3 passes through the lifting rings 4 and is wrapped around and fixed to the connecting rod 2 at the bottom of the hammer 1. By adjusting the tension of the lifting rope, the device moves synchronously with the vibration of the hammer, keeping the barrel wall 7 always vertically covering the working surface; the transparent polycarbonate lid 6 and barrel wall 7 provide operation visibility and facilitate real-time adjustment of the device position.
[0042] Before installation, select the appropriate lifting rope 3 and check the integrity of the device; after passing the lifting rope 3 through the lifting ring 4, fix it to the connecting rod 2, and adjust the tension to make the device hang stably; align the drill rod 5 with the insertion port 8 and insert it, using the elasticity of the rubber pad to complete the connection; lower the device to the working surface, and adjust the length of the lifting rope so that the barrel wall 7 completely surrounds the tip of the drill rod; observe the status through the transparent structure during operation, and if dust leakage is found, stop the adjustment; after completion, disassemble, clean and check the wear of the parts.
[0043] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.
Claims
1. A simple dust-proof device for road surface demolition, characterized in that, include: The lid (6) has a disc-shaped structure; The barrel wall (7) is integrally formed with the barrel lid (6) and extends downward from the outer edge of the barrel lid (6) to form a cylindrical structure; The insertion port (8) is located in the central area of the bucket lid (6) and is a circular through hole that penetrates the bucket lid (6); The lifting rings (4) are symmetrically fixed to the outer edges of both sides of the bucket lid (6) and are set perpendicular to the surface of the bucket lid (6); The hoisting rope (3) passes through the hoisting rings (4) on both sides and then wraps around the connecting rod (2) of the hammer (1); The barrel wall (7) and the barrel lid (6) together form a semi-enclosed space. The insertion port (8) is used for the drill rod (5) to pass through and extend into the working surface. The hoisting rope (3) suspends the device below the connecting rod (2) through the hoisting ring (4), so that the barrel wall (7) surrounds the working area of the drill rod (5).
2. The simple dustproof device for road surface demolition according to claim 1, characterized in that: The barrel lid (6) and barrel wall (7) are an integral plastic structure, formed in one step by injection molding process. The size of the insertion port (8) is adapted to the size of the drill bit (5).
3. The simple dustproof device for road surface demolition according to claim 1, characterized in that: The inner wall of the insertion port (8) is provided with an annular rubber gasket, the inner diameter of which is in clearance fit with the outer diameter of the drill rod (5).
4. The simple dustproof device for road surface demolition according to claim 1, characterized in that: The lifting ring (4) is fixed at symmetrical positions on both sides of the outer edge of the bucket lid (6), and the axis of the lifting ring (4) is perpendicular to the plane of the bucket lid (6).
5. The simple dustproof device for road surface demolition according to claim 1, characterized in that: The suspension rope (3) is a flexible braided rope, with its two ends passing through the connecting rod (2) at the bottom of the suspension ring (4) and the hammer (1), respectively.
6. The simple dustproof device for road surface demolition according to claim 5, characterized in that: The barrel lid (6) and barrel wall (7) are made of transparent polycarbonate, and at least four connecting rods (2) are evenly arranged on the hammer (1).