A chisel joint for a construction machine

Abstract

The utility model relates to a kind of gouging joints for engineering machinery, comprising: connecting piece, the connecting piece is detachably installed on the mechanical arm of the engineering machinery;Fixed part, the connecting piece is fixedly connected with the fixed part;Gouging structure, the gouging structure is adjustably installed on the fixed part, the gouging structure is power connected with the mechanical arm;Locking structure, the locking structure is used to fix the angle of the gouging structure, to adapt to different working conditions.The utility model solves the technical problems that existing gouging equipment is inefficient, uneven in quality and has increased safety risks when dealing with complex or irregular construction surfaces.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction equipment technology, and in particular to a roughening joint for engineering machinery. Background Technology

[0002] Roughening refers to the process of applying mechanical impact, chiseling, or high-frequency vibration to a concrete or rock substrate to remove surface laitance and weak layers, creating an interface with a certain degree of roughness and texture. This improves the mechanical bonding and adhesion between new and old materials. This process is widely used in tunnel secondary lining, bridge reinforcement, old structure renovation, and road repair, aiming to obtain a uniform, controllable rough interface on horizontal, vertical, and curved surfaces without damaging the effective load-bearing layer. Current roughening operations mainly rely on two types of equipment: large roughening equipment, usually specialized sets, suitable for large and relatively flat construction surfaces, offering high operational efficiency; and manual tools, such as handheld electric or pneumatic roughening tools, which are small, mobile, and easily accessible, often used for corners, edges, and localized repairs.

[0003] However, in actual engineering projects, when the construction surface is uneven, has local elevation differences, or has complex shapes such as arches or curves, large roughening equipment, limited by its size and fitting capacity, struggles to achieve sufficient coverage and uniform processing of irregular areas. Typically, after the large equipment completes the initial processing, manual labor is required for secondary processing, leading to fragmented processes, increased total working hours, and decreased quality uniformity. Especially in tunnel environments, factors such as clearance limitations, arched cross-sectional characteristics, turning radii, and dust control and ventilation conditions further restrict the stability and operational convenience of large equipment on vertical planes and large flat surfaces, increasing the amount of manual supplementary work and safety risks.

[0004] Therefore, there is an urgent need for a device or structure that can efficiently, stably and continuously perform roughening operations on vertical and horizontal surfaces (including uneven surfaces) to reduce or replace manual secondary processing after large equipment operations, thereby improving construction efficiency, work quality and work safety. Utility Model Content

[0005] This utility model aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a chisel joint for engineering machinery in one possible embodiment, comprising: a connector detachably mounted on the robotic arm of the engineering machinery; a fixing member fixedly connected to the connector and the fixing member; a chisel structure adjustablely mounted on the fixing member and poweredly connected to the robotic arm; and a locking structure for fixing the angle of the chisel structure to adapt to different working conditions.

[0006] In a possible implementation manner, the fixing member includes: a transverse plate, the top surface of the transverse plate is fixedly connected to the free end of the fixing member; two oppositely arranged longitudinal plates, the two longitudinal plates are fixedly connected to both ends of the transverse plate, and the bottom surface of the transverse plate and the inner side surface of the longitudinal plate form a "C" - shaped structure.

[0007] In a possible implementation manner, mounting shafts are provided on two side plates, and the mounting shafts are rotatably connected to the side of the chiseling structure.

[0008] In a possible implementation manner, the locking structure includes: a limit pin, the limit pin is installed on the transverse plate; when the limit pin is installed in the first position, the end of the limit pin abuts against the chiseling structure, and when the limit pin is installed in the second position, the end of the limit pin is flush with the transverse plate.

[0009] In a possible implementation manner, the chiseling structure includes: a power structure, the power structure is connected to the hydraulic system of the construction machinery; a drive structure, the drive structure converts the hydraulic system into output power; a chiseling assembly, the chiseling assembly is drivingly connected to the drive structure.

[0010] In a possible implementation manner, the chiseling assembly includes: a mounting shaft, the mounting shaft is drivingly connected to the drive structure; chiseling pieces, several chiseling pieces are provided, the several chiseling pieces are spaced apart on the mounting shaft, the chiseling pieces are of irregular shapes, and the distance between two adjacent chiseling pieces is the same as the width of the chiseling piece.

[0011] In a possible implementation manner, two groups of chiseling assemblies are provided, the mounting shafts of the two groups of chiseling assemblies are arranged in parallel, and the chiseling pieces of the two groups of chiseling assemblies are arranged in a staggered manner.

[0012] In a possible implementation manner, it further includes moving rollers, the number of the moving rollers is four, the four moving rollers are installed on the chiseling structure, and the lowest end of the moving rollers is 2 - 3 cm higher than the lowest end of the chiseling pieces.

[0013] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model and have the following beneficial effects: Based on the above technical solutions, the chiseling joint for construction machinery of the present utility model is detachably installed on the robotic arm of the construction machinery through a connecting member, the fixing member is fixedly connected to the connecting member, the chiseling structure is adjustably installed on the fixing member and is power - connected to the robotic arm, and the locking structure is used to fix the angle of the chiseling structure to adapt to different working conditions.

[0014] First, the chisel joint is easily installed onto the robotic arm of construction machinery via a connector, enabling rapid deployment and disassembly. Second, the fixing component, acting as a load-bearing part between the connector and the chisel structure, ensures the stability of the chisel structure and the effectiveness of force transmission. For example, during chiseling operations, adjusting the angle of the chisel structure ensures that the chisel blade operates at the optimal cutting angle and force for concrete surfaces of different hardness and inclination, thereby improving chiseling efficiency and effect. Furthermore, the power connection between the chisel structure and the robotic arm, such as through a hydraulic system, allows the chisel blade to impact the work surface at high speed and high frequency. Finally, the locking structure securely locks the chisel joint after the chisel angle is adjusted, preventing angle deviation due to vibration or reaction forces during operation, thus ensuring the continuity and stability of the chiseling operation and avoiding poor chiseling results or equipment damage caused by angle changes. Through this structure, the chisel joint solves the problems of poor flexibility and low efficiency of traditional chisel tools in adapting to complex working conditions, offering strong adaptability, convenient operation, high chiseling efficiency, and stable working results. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of the chisel joint for engineering machinery provided in this embodiment of the utility model; Figure 2 for Figure 1 A schematic diagram of the device from another perspective.

[0017] Explanation of reference numerals in the attached figures: 10. Connector; 20. Fixing component; 21. Horizontal plate; 22. Vertical plate; 23. Mounting shaft; 30. Chisel structure; 31. Power structure; 32. Drive structure; 33. Chisel assembly; 331. Mounting shaft; 332. Chisel blade; 40. Locking structure; 41. Limit pin; P1. First position; P2. Second position; 50. Moving roller. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] Figure 1 A schematic diagram of the structure of the chisel joint for engineering machinery provided in this embodiment of the utility model; Figure 2 for Figure 1 A schematic diagram of the device from another perspective.

[0023] Please see Figure 1-2In one possible implementation, a chisel joint for engineering machinery includes: a connector 10, which is detachably mounted on the robotic arm of the engineering machinery; a fixing member 20, which is fixedly connected to the connector 10; a chisel structure 30, which is adjustablely mounted on the fixing member 20 and is poweredly connected to the robotic arm; and a locking structure 40, which is used to fix the angle of the chisel structure 30 to adapt to different working conditions.

[0024] Traditional large-scale chiseling equipment struggles to effectively handle uneven or complex curved surfaces, while manual chiseling is inefficient and of questionable quality, especially in confined environments like tunnels where equipment operation is limited, manual rework is extensive, and safety risks are high. This invention aims to provide a chiseling joint for engineering machinery that can adapt to various working conditions, particularly for efficient, stable, and continuous chiseling operations on vertical and uneven surfaces. This reduces or replaces manual secondary processing after large-scale equipment operation, thereby improving construction efficiency, work quality, and operational safety. Specifically, this invention provides a chiseling joint for engineering machinery that leverages the flexibility and power output of a robotic arm. Through an adjustable chiseling structure 30 and a locking structure 40, it achieves precise control of the chiseling angle, adapting to the requirements of different construction surfaces. The chiseling joint is quickly connected to the robotic arm of the engineering machinery via a connector 10, and a fixing component 20 ensures the stability of the connection. The chiseling structure 30, through its power connection with the robotic arm, enables the chiseling operation. The locking structure 40 ensures the stability of the chiseling structure 30 at a specific angle, preventing angle deviation during operation, thereby ensuring the uniformity of chiseling and the quality of the operation.

[0025] Specifically, the connector 10 is a detachable structure, facilitating quick installation and disassembly with robotic arms of different types of engineering machinery. It is typically made of high-strength steel to ensure reliable connection. The fixing component 20 securely connects the connector 10 to the chiseling structure 30, bearing the impact and vibration generated during chiseling operations. The chiseling structure 30 is angle-adjustable on the fixing component 20 to accommodate different chiseling surfaces, such as horizontal, vertical, or inclined surfaces. The chiseling structure 30 is powered by the hydraulic or mechanical transmission system of the robotic arm to obtain the necessary power for chiseling. The locking structure 40 is equipped with a mechanical or hydraulic locking device to securely lock the chiseling structure 30 after it has been adjusted to the desired angle, preventing rotation due to force during operation and ensuring the accuracy of the chiseling angle.

[0026] The utility model realizes the quick detachable installation with the mechanical arm of construction machinery through the connecting part 10, greatly improving the universality of the equipment and the transfer efficiency. The adjustable installation characteristic of the scarifying structure 30, combined with the angle fixing function of the locking structure 40, enables the scarifying joint to flexibly adapt to various complex working conditions. Especially when dealing with irregular surfaces, corners, internal and external corners, and tunnel arch surfaces, it can achieve uniform and continuous scarifying operations, effectively compensating for the deficiencies of large scarifying equipment and manual scarifying. This significantly reduces the need for secondary manual processing, improves the overall construction efficiency and operation quality , and reduces the labor cost and safety risks.

[0027] It is worth noting that, in the above embodiment, the connecting part 10 can adopt a quick-change joint or a bolt connection method to adapt to different mechanical arm interfaces. The fixing part 20 can adopt an integrally cast or welded structure to enhance its strength and rigidity . The angle adjustment of the scarifying structure 30 can be achieved through a worm and gear mechanism, a hydraulic cylinder or a manual adjusting rod to provide different adjustment precisions and conveniences. The locking structure 40 can adopt various forms such as mechanical pin locking, hydraulic self-locking or friction braking to ensure the reliability of angle fixing. For example, the limit pin 41 can be designed as a multi-hole pin to provide multiple preset angles, or a friction locking device with stepless adjustment can be adopted. The power connection between the scarifying structure 30 and the mechanical arm can be driven by a hydraulic motor, an electric motor or directly connected through a mechanical transmission shaft. In addition, in order to further improve the uniformity of the scarifying operation, the scarifying structure 30 can be integrated with an automatic leveling or profiling mechanism so that it can better fit the irregular construction surface.

[0028] Please refer to Figure 1-2 , in a possible embodiment, the fixing part 20 includes: a transverse plate 21, the top surface of the transverse plate 21 is fixedly connected to the free end of the fixing part 20; two oppositely arranged longitudinal plates 22, the two longitudinal plates 22 are fixedly connected to both ends of the transverse plate 21, and the bottom surface of the transverse plate 21 and the inner side surface of the longitudinal plate 22 form a "C" - shaped structure.

[0029] In the above embodiment, the "C" - shaped structure of the fixing part 20 enables the scarifying structure 30 to be accommodated in the internal space formed by the transverse plate 21 and the longitudinal plates 22, so as to realize the angle adjustment function of the scarifying structure 30 while ensuring the structural compactness. The transverse plate 21 serves as the main bearing surface, and its top surface is fixedly connected to the free end of the connecting part 10, ensuring the stable integration of the entire scarifying joint with the construction machinery. The two longitudinal plates 22 provide lateral support and limiting functions, ensuring the stability of the scarifying structure 30 during adjustment and operation, and preventing unnecessary lateral swing. The above structural design helps to evenly transmit the force and vibration generated by the scarifying operation, improving the overall stiffness and durability of the equipment.

[0030] The cross plate 21 is usually made of high-strength steel plate. Its top surface is fixedly connected to the connecting member 10 or the free end of the robotic arm of the construction machinery by welding or bolt connection, serving as the main load-bearing and force-transmitting component. The two longitudinal plates 22 are also made of high-strength steel plate and are respectively fixedly connected to both ends of the cross plate 21, forming an open trough-shaped structure. The bottom surface of the cross plate 21 and the inner side surfaces of the longitudinal plates 22 together form a "C"-shaped space, which is used to accommodate the scarifying structure 30 and provide support and limit for its rotational adjustment. The above structure enables the scarifying structure 30 to achieve angular adjustment within a certain range in this space, while ensuring the compactness and strength of the structure.

[0031] The fixing member 20 adopts a "C"-shaped structure, which not only provides a stable installation base for the scarifying structure 30, but also optimizes the force transmission path, effectively disperses the impact and vibration generated during the scarifying operation, and improves the overall stability and service life of the equipment. The above structure enables the scarifying structure 30 to achieve angular adjustment in a limited space, improves the adaptability and operation flexibility of the equipment, especially has obvious advantages when operating in narrow or complex spaces. In addition, the "C"-shaped structure is convenient for manufacturing and assembly, reduces the production cost, and simplifies the maintenance of the equipment.

[0032] In the above embodiment, the thickness and material selection of the cross plate 21 and the longitudinal plates 22 can be optimized according to the intensity and frequency of the scarifying operation. For example, high-strength alloy steel can be used to improve wear resistance and impact resistance. Wear-resistant liners or guide grooves can be provided on the inner side surfaces of the longitudinal plates 22 to reduce friction and wear during the adjustment of the scarifying structure 30. At the same time, in order to enhance the rigidity of the fixing member 20, reinforcing ribs or support structures can be added between the cross plate 21 and the longitudinal plates 22.

[0033] Please refer to Figure 1-2 , in a possible embodiment, mounting shafts 23 are provided on the two longitudinal plates 22, and the mounting shafts 23 are rotatably connected to the sides of the scarifying structure 30.

[0034] In the above embodiment, the mounting shafts 23 provide a stable rotational support point for the scarifying structure 30, enabling it to achieve angular adjustment inside the "C"-shaped structure of the fixing member 20. By arranging the mounting shafts 23 on the two longitudinal plates 22 and making them rotatably connected to the sides of the scarifying structure 30, the scarifying structure 30 can rotate around the mounting shafts 23, thereby changing its contact angle with the construction surface. This rotational connection method ensures the smoothness of the scarifying structure 30 during the adjustment process, can withstand the torque and radial force generated during the scarifying operation, and at the same time ensures the stability of the scarifying structure 30 at different angles.

[0035] This invention features mounting shafts 23 on the two longitudinal plates 22 of the fixing member 20, which are rotatably connected to the sides of the chiseling structure 30. The mounting shafts 23 are typically cylindrical shafts made of high-strength alloy steel, connected to the sides of the chiseling structure 30 via bearings or bushings to reduce rotational friction and improve load-bearing capacity. Both ends of the mounting shafts 23 are fixed to the longitudinal plates 22 by welding, bolting, or press-fitting, ensuring no displacement or loosening during chiseling operations. This structure allows the chiseling structure 30 to rotate freely around the mounting shafts 23, enabling precise adjustment of the chiseling angle. The mounting shafts 23 facilitate convenient and precise angle adjustment of the chiseling structure 30, significantly improving the equipment's adaptability to different work surfaces. The connection method ensures the stability and positioning accuracy of the chiseling structure 30 during rotation, while effectively transmitting chiseling force, reducing component wear, and extending the equipment's service life.

[0036] Please see Figure 1-2 In one possible implementation, the locking structure 40 includes a limiting pin 41, which is mounted on the horizontal plate 21. When the limiting pin 41 is mounted in the first position P1, the end of the limiting pin 41 abuts against the chisel structure 30. When the limiting pin 41 is mounted in the second position P2, the end of the limiting pin 41 is flush with the horizontal plate 21.

[0037] In the above embodiment, when the limiting pin 41 is in the first position P1, its end extends and contacts or inserts into a preset hole in the chisel structure 30 at a specific part of the chisel structure 30, thereby restricting the rotation of the chisel structure 30 and achieving the purpose of fixing the angle. This contact or insertion ensures that the chisel structure 30 will not change its angle due to vibration or external force during operation. When the limiting pin 41 is in the second position P2, its end retracts and is flush with the surface of the horizontal plate 21. At this time, the limiting pin 41 no longer interferes with the rotation of the chisel structure 30, allowing the chisel structure 30 to adjust its angle. This design makes the locking and unlocking operation of the chisel angle simple and quick, improving the operational flexibility and efficiency of the equipment.

[0038] The limiting pin 41 is typically made of high-strength metal, cylindrical or square in shape, and is mounted on the horizontal plate 21. It can be installed using a sliding fit, allowing the limiting pin 41 to reciprocate linearly inside or outside the horizontal plate 21. When the limiting pin 41 is in the first position P1, its protruding end contacts or engages with one or more preset limiting points (such as holes, slots, or protrusions) on the chisel structure 30, thereby achieving precise locking of the angle of the chisel structure 30. When it is necessary to adjust the angle of the chisel structure 30, the operator pushes or pulls the limiting pin 41 to the second position P2. At this time, the end of the limiting pin 41 is flush with the surface of the horizontal plate 21, no longer interfering with the rotation of the chisel structure 30, thus allowing the chisel structure 30 to freely adjust its angle. This structure makes the angle locking and unlocking operation of the chisel structure 30 very convenient and intuitive. This locking method is simple in structure, highly reliable, and can effectively prevent the chisel structure 30 from shifting its angle due to vibration or impact during operation, ensuring the accuracy and uniformity of the chiseling operation. Meanwhile, the flush design of the limiting pin 41 avoids potential interference or danger to the operator or the surrounding environment when adjusting the chiseling structure 30.

[0039] Please see Figure 1-2 In one possible implementation, the chiseling structure 30 includes: a power structure 31 connected to the hydraulic system of the engineering machinery; a drive structure 32 that converts the hydraulic system into output power; and a chiseling assembly 33 that is drivenly connected to the drive structure 32.

[0040] In the above embodiment, the chiseling structure 30 is designed to efficiently convert the hydraulic energy provided by the construction machinery into the mechanical energy required for chiseling operations. The power structure 31, as the energy input interface, receives high-pressure hydraulic oil from the hydraulic system of the construction machinery. The drive structure 32 acts as an energy converter, transforming the hydraulic energy into the rotational or impact kinetic energy required by the chiseling assembly 33. The chiseling assembly 33 is the core component that directly performs the chiseling operation. Its drive connection with the drive structure 32 ensures that the chisel blades 332 can act on the concrete or rock surface in a predetermined manner (such as high-speed rotation or reciprocating impact), thereby achieving a highly efficient chiseling effect. This modular design allows the chiseling structure 30 to be maintained and upgraded independently of the construction machinery, improving the equipment's versatility and ease of maintenance.

[0041] The chiseling structure 30 of this utility model consists of a power structure 31, a drive structure 32, and a chiseling assembly 33. The power structure 31 typically refers to a hydraulic motor or hydraulic cylinder, which is connected to the hydraulic system of the engineering machinery via a high-pressure hose, responsible for the initial stage of converting hydraulic energy into mechanical energy. The drive structure 32 can be a reduction gearbox, a crank-connecting rod mechanism, or an eccentric wheel mechanism; its function is to convert and transmit the mechanical energy generated by the power structure 31 to provide the specific motion form (such as high-speed rotation, high-frequency impact, or reciprocating motion) and torque required by the chiseling assembly 33. The chiseling assembly 33 is the component that directly acts on the chiseling surface, including chisel blades 332, etc., and is driven by the drive structure 32 through key connections, spline connections, or flange connections, ensuring that power can be stably and efficiently transmitted to the chisel blades 332.

[0042] In the above embodiments, the power structure 31 can select a suitable hydraulic motor type, such as a gear motor, vane motor, or piston motor, based on the maximum flow rate and pressure of the hydraulic system of the construction machinery, to meet the power requirements of the chiseling operation. The drive structure 32 can integrate a shock absorption device to reduce the impact of vibrations generated during chiseling operations on the construction machinery and operators. The connection between the chiseling assembly 33 and the drive structure 32 can be designed as a quick-change interface to facilitate the rapid replacement of different types of chiseling blades 332. To adapt to chiseling surfaces of different hardness, the power structure 31 can be designed as a variable displacement hydraulic motor to achieve stepless adjustment of chiseling frequency and force. In addition, a lubrication system can be integrated inside the chiseling structure 30 to ensure the long-term stable operation of each moving part.

[0043] Please see Figure 1-2 In one possible implementation, the chiseling assembly 33 includes: a mounting shaft 331, which is drivenly connected to the drive structure 32; and chiseling pieces 332, of which a plurality of chiseling pieces 332 are provided, which are spaced apart on the mounting shaft 331. The chiseling pieces 332 are irregular in shape, and the distance between two adjacent chiseling pieces 332 is equal to the distance between the two adjacent pieces.

[0044] In the above embodiment, the design of the chiseling assembly 33 aims to achieve efficient and uniform chiseling of concrete or rock surfaces through the irregularly shaped chiseling blades 332 and their spaced distribution on the mounting shaft 331. The mounting shaft 331, acting as a carrier for the chiseling blades 332, transmits rotational power to the chiseling blades 332 via a drive connection with the drive structure 32. The irregularly shaped chiseling blades 332 provide multi-angle impact and scraping action, enhancing chiseling efficiency and adaptability to different surface textures. The spaced distribution of the chiseling blades 332 on the mounting shaft 331 ensures that each chiseling blade 332 has sufficient space for effective operation, while avoiding interference between the blades and facilitating debris removal. The spacing between two adjacent chiseling blades 332 is crucial for achieving chiseling uniformity and efficiency, aiming to ensure that the chiseling operation covers the entire working width and achieves the desired roughness.

[0045] The core of this chiseling assembly 33 consists of a mounting shaft 331 and several irregularly shaped chiseling blades 332. The mounting shaft 331 is typically a cylindrical shaft made of high-strength alloy steel, connected to the drive structure 32 via keyways, splines, or bolts to transmit torque and rotational motion. Several chiseling blades 332 are spaced apart along the axial direction of the mounting shaft 331. The shape of the chiseling blades 332 can be irregular polygons, stars, or irregular shapes with sharp edges, the edges of which are specially treated to improve wear resistance and impact resistance. The chiseling blades 332 are securely mounted on the mounting shaft 331 by welding, press-fitting, or bolting. The spacing between adjacent chiseling blades 332 is precisely calculated and designed to ensure that during the chiseling process, the chiseling blades 332 can cover the entire chiseling width and form a uniform chiseling texture, while preventing debris accumulation from affecting the chiseling effect. The chiseling assembly 33 employs irregularly shaped chisel blades 332, which, combined with their spaced distribution on the mounting shaft 331, significantly improves chiseling efficiency and adaptability to materials of varying hardness. This structure generates multi-directional impact and scraping action, effectively removing concrete laitance and weak layers, and creating an ideal rough interface. Simultaneously, the spaced distribution of the chisel blades 332 facilitates debris removal, reducing clogging and wear, and extending the service life of the chisel blades 332. By optimizing the shape and spacing of the chisel blades 332, a more uniform and efficient chiseling effect can be achieved. In the above embodiment, the material of the chisel blades 332 can be selected as high-hardness wear-resistant alloy steel or inlaid with carbide tips to improve their service life and chiseling efficiency. The shape of the chisel blades 332 can be optimized according to specific chiseling requirements; for example, a sharper shape can be used to remove hard surfaces; a shape with multiple impact points can be used to create uniform roughness. The connection between the chisel blade 332 and the mounting shaft 331 can be a replaceable design, such as by quick pin or thread connection, to facilitate quick replacement after wear.

[0046] Please see Figure 1-2 In one possible implementation, the chiseling assembly 33 is provided in two sets, with the mounting shafts 331 of the two sets of chiseling assemblies 33 arranged in parallel and the chiseling blades 332 of the two sets of chiseling assemblies 33 staggered.

[0047] In the above embodiment, by setting two sets of chiseling components 33 and arranging their mounting shafts 331 in parallel, the width and efficiency of the chiseling operation are significantly improved. This dual-set configuration allows the chiseling joint to cover a larger chiseling area at once. More importantly, the chiseling blades 332 of the two sets of chiseling components 33 are staggered, meaning that when one set of chiseling blades 332 acts on a certain area, the other set of chiseling blades 332 acts on its adjacent or overlapping area. This staggered arrangement ensures the continuity and uniformity of the chiseling operation, avoids unchiseled "blind spots," and thus achieves a more thorough and uniform chiseling effect. At the same time, the staggered arrangement also helps to disperse the chiseling impact force, reduce single-point stress concentration, and extend the life of the chiseling blades 332 and the equipment. The chiseling components 33 of this utility model include two sets, each set containing a mounting shaft 331 and several chiseling blades 332. The mounting shafts 331 of these two sets of chiseling components 33 are installed parallel to each other inside the chiseling structure 30, and are usually driven by independent drive structures 32 or by sharing a single drive structure 32. The chisel blades 332 on the two sets of chisel assemblies 33 are staggered in axial and / or radial positions. For example, when the protrusion of one set of chisel blades 332 is located in a certain axial position, the protrusion of the other set of chisel blades 332 is located in an adjacent or complementary position. This staggered arrangement ensures that the two sets of chisel blades 332 can cover a wider area or perform denser chiseling on the same area when rotating or impacting, thereby achieving a more thorough and uniform surface treatment.

[0048] The above structure significantly improves the efficiency and quality of chipping operations. Increasing the chipping coverage area reduces the need for repetitive work and shortens the construction period. The staggered arrangement ensures the uniformity of chipping, avoids missed areas, and results in a more consistent surface roughness, improving the bonding performance between new and old materials. Furthermore, this design helps balance chipping forces, reduces equipment vibration, and improves operational stability. In the above embodiment, the two sets of chipping components 33 can be driven by independent hydraulic motors to achieve more flexible speed and direction control. The staggered arrangement of the chipping blades 332 can include axial staggering, radial staggering, or a combination of both to adapt to different chipping requirements. For ease of maintenance and replacement, the two sets of chipping components 33 can be designed as a modular structure for convenient overall disassembly and installation. Additionally, anti-entanglement or anti-clogging devices can be installed between the two sets of chipping components 33 to ensure smooth debris discharge. For scenarios requiring higher chipping efficiency, the number of chipping components 33 can be increased, for example, to three or more sets, with corresponding adjustments to their staggered arrangement.

[0049] Please see Figure 1-2 In one possible implementation, four movable rollers 50 are also included. These four movable rollers 50 are mounted on the chiseling structure 30, with the lowest point of each roller 50 2-3 cm higher than the lowest point of the chiseling blade 332. In this implementation, the introduction of the movable rollers 50 aims to provide auxiliary support and precise control of the chiseling depth for the chiseling operation. By installing four movable rollers 50 on the chiseling structure 30, the chiseling joint can maintain stable contact with the work surface during movement, reducing uneven chiseling depth caused by robotic arm vibration or improper operation. The number of movable rollers 50 (four) ensures stable support during movement in different directions. Crucially, the lowest point of each movable roller 50 is 2-3 cm higher than the lowest point of the chiseling blade 332; this height difference is key to achieving chiseling depth control. This means that during normal operation, the movable rollers 50 do not directly contact the work surface, allowing the chiseling blade 332 to chisel freely. The moving roller 50 will only contact the work surface when the roughening depth reaches or approaches the preset value, thus playing a role in limiting the depth and providing support, preventing the roughening disc 332 from going too deep, thereby protecting the work surface from excessive damage and ensuring the uniformity of the roughening depth.

[0050] In addition to the aforementioned chiseling structure 30, this invention also includes four movable rollers 50. These movable rollers 50 are typically made of wear-resistant rubber or polyurethane material and are installed on the bottom or side of the chiseling structure 30. They are connected to the chiseling structure 30 via brackets or bearings to ensure free rotation. The four movable rollers 50 are typically arranged in a rectangular or square shape to provide stable four-point support. The lowest point of each movable roller 50 is precisely positioned 2-3 cm above the lowest point of the chiseling blade 332. This means that in the initial stage of chiseling, the chiseling blade 332 directly contacts and chiseles the work surface. When the chiseling depth reaches 2-3 cm, the movable rollers 50 begin to contact the work surface, providing support and depth limiting to prevent the chiseling blade 332 from penetrating further, thereby controlling the chiseling depth. The arrangement of the movable rollers 50, especially the design that their lowest point is 2-3 cm above the lowest point of the chiseling blade 332, provides precise depth control and stable auxiliary support for the chiseling operation. This effectively avoids unnecessary damage to the base surface caused by excessive roughening, ensuring the uniformity and consistency of roughening depth, thereby improving roughening quality. Simultaneously, the movable roller 50 reduces friction and wear between the roughening structure 30 and the work surface, extending the service life of the roughening disc 332 and the equipment, reducing operational difficulty, and improving construction efficiency. In the above embodiment, the material of the movable roller 50 can be selected according to the construction environment; for example, in humid or dusty environments, corrosion-resistant and non-adhesive materials can be used.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A roughening joint for engineering machinery, characterized in that, Comprising: A connecting member removably mounted on the robotic arm of the construction machinery; A fixing member fixedly connected to the connecting member; A roughening structure adjustably mounted on the fixing member and power-connected to the robotic arm; A locking structure for fixing the angle of the roughening structure to adapt to different working conditions.

2. The roughening joint for engineering machinery according to claim 1, characterized in that, The fixing member includes: A transverse plate, the top surface of which is fixedly connected to the free end of the fixing member; Two oppositely arranged longitudinal plates fixedly connected to both ends of the transverse plate, and a "U" - shaped structure is formed by the bottom surface of the transverse plate and the inner side surface of the longitudinal plates.

3. The roughening joint for engineering machinery according to claim 2, characterized in that, Mounting shafts are provided on the two longitudinal plates, and the mounting shafts are rotatably connected to the side of the roughening structure.

4. The roughening joint for engineering machinery according to claim 3, characterized in that, The locking structure includes: A limit pin mounted on the transverse plate; when the limit pin is mounted at the first position, the end of the limit pin abuts against the roughening structure, and when the limit pin is mounted at the second position, the end of the limit pin is flush with the transverse plate.

5. The roughening joint for engineering machinery according to any one of claims 1-4, characterized in that, The roughening structure includes: A power structure connected to the hydraulic system of the construction machinery; A driving structure for converting the hydraulic system into output power; A roughening assembly drivingly connected to the driving structure.

6. The roughening joint for engineering machinery according to claim 5, characterized in that, The roughening assembly includes: A mounting shaft drivingly connected to the driving structure; Roughening plates, a plurality of which are provided, and the plurality of roughening plates are spaced apart on the mounting shaft. The roughening plates are of irregular shapes, and the distance between two adjacent roughening plates is the same as the width of the roughening plates.

7. The roughening joint for engineering machinery according to claim 6, characterized in that, Two sets of the roughening assemblies are provided, and the mounting shafts of the two sets of roughening assemblies are arranged in parallel, and the roughening plates of the two sets of roughening assemblies are arranged in a staggered manner.

8. The roughening joint for engineering machinery according to claim 7, characterized in that, Also included are moving rollers, the number of which is four. The four moving rollers are mounted on the roughening structure, and the lowest end of the moving rollers is 2 - 3 cm higher than the lowest end of the roughening plates.

Images