A concrete chipping device

Abstract

The application relates to the construction technical field, and particularly discloses a concrete chiseling device. A walking system below a bottom plate enables the device to have autonomous moving capability, and significantly expands the operation coverage range; the rotating connection between a mounting seat and the bottom plate realizes flexible adjustment of the operation direction; the centralized control of an operation system in a driver's cab enables an operator to remotely control a pitching and rocking arm system and a chiseling system, thereby completely avoiding the physical consumption of manual chiseling; the pitching and rocking arm system is used for the spatial positioning of the chiseling system, and can support accurate chiseling of a concrete surface of a facade and a top surface above 6 meters, thereby breaking through the height limitation of traditional operation.

Description

Technical Field

[0001] This application relates to the field of construction technology, and in particular to a concrete roughening device. Background Technology

[0002] During the construction and repair of concrete structures, to ensure effective bonding between new and old concrete layers, the surface of the existing concrete needs to be roughened. This involves mechanically removing the surface laitance and weakened layer to create a uniformly rough interface approximately 3-5 mm deep. This process significantly improves the mechanical interlocking force and chemical bond strength between the new and old concrete, preventing interlayer delamination or water seepage. It is widely used in bridge pier joints, reinforcement of building beam-column joints, and tunnel lining repair, and is a key procedure for ensuring the integrity and durability of the structure.

[0003] Currently, the mainstream concrete roughening devices are mainly handheld pneumatic or electric impact devices. A typical structure includes a roughening head, a power source, a transmission mechanism, and an operating handle. During construction, the operator needs to firmly grip the handle, and the reciprocating motion of the internal piston drives the alloy chisel head to hammer the concrete surface at a high frequency of 2000-3000 times per minute. When working on vertical or overhead surfaces, a scaffolding platform is often required for positioning. The operator needs to maintain a supporting posture for a long time to control the direction and hammering force of the equipment. The duration of a single continuous operation is usually no more than 30 minutes.

[0004] The existing scabbing equipment has the following technical problems during operation: the operation relies on the construction personnel to operate it by hand throughout the entire process, which cannot be done continuously for a long time, resulting in low work efficiency. At higher positions, scaffolding and other platforms need to be erected for auxiliary work, which further affects the efficiency of the operation. Utility Model Content

[0005] To improve the efficiency of concrete roughening operations, this application provides a concrete roughening device.

[0006] This application provides a concrete roughening device, which adopts the following technical solution: A concrete roughening device includes a base plate, a walking system disposed below the base plate, a mounting seat rotatably mounted on the base plate, a driver's cab disposed on the mounting seat, an operating system disposed inside the driver's cab, a pitch rocker arm system disposed at the front end of the mounting seat, and a roughening system disposed at a position away from the mounting seat from the pitch rocker arm system.

[0007] By adopting the above technical solutions, the walking system under the base plate enables the device to move autonomously, significantly expanding the operating coverage area; the rotating connection between the mounting base and the base plate allows for flexible adjustment of the operating direction; the centralized control of the operating system in the cab allows the operator to remotely control the pitch and rocker arm system and the chiseling system, completely avoiding the physical exertion of manually holding the machine for chiseling; the pitch and rocker arm system provides spatial positioning for the chiseling system, supporting precise chiseling of concrete surfaces on facades and ceilings at heights of 6 meters or more, breaking through the height limitations of traditional operations.

[0008] Optionally, the walking system includes tracks and a transmission mechanism, the transmission mechanism being mounted on the base plate and capable of driving the track drive.

[0009] By adopting the above technical solutions, the transmission mechanism drives the track drive, providing stable and reliable walking power for the device; the tracked chassis design enhances ground adaptability, enabling the device to maintain its mobile operation capability in complex construction site environments such as muddy and rugged terrain, and significantly reduces the ground pressure, avoiding ground subsidence and deformation.

[0010] Optionally, the pitch rocker system includes a main boom, a secondary boom, and a hydraulic mechanism. The main boom is rotatably mounted on the mounting base, and the secondary boom is rotatably mounted on the end of the main boom away from the mounting base. The chiseling system is installed at the end of the forearm away from the upper arm, and the hydraulic mechanism is located between the mounting base and the upper arm, between the upper arm and the forearm, and between the forearm and the chiseling system.

[0011] By adopting the above technical solutions, the rotational connection between the boom and the mounting base establishes a first degree of pitch freedom, the rotational connection between the forearm and the boom adds a second degree of pitch freedom, and the rotational connection between the forearm and the chiseling system adds a third degree of pitch freedom, enabling the chiseling system to operate within a large pitch adjustment range in three-dimensional space; while the hydraulic mechanism can precisely control the coordinated movement of the boom, forearm, and chiseling system, so that the chiseling head forms a programmable trajectory movement path within the working surface, which is especially suitable for the construction of irregular structural surfaces such as curved tunnel lining.

[0012] Optionally, the hydraulic mechanism includes multiple hydraulic cylinders, each of which is respectively disposed between the mounting base and the upper arm, between the upper arm and the lower arm, and between the lower arm and the chiseling system, and both ends of each hydraulic cylinder are rotatably connected to the corresponding position.

[0013] By adopting the above technical solution, the rotational connection design of each hydraulic cylinder between the mounting base and the boom, the boom and the forearm, and the forearm and the chiseling system forms a multi-degree-of-freedom hinge mechanism; the pushing and pulling force of the hydraulic cylinder is converted into precise angle adjustment of each joint, realizing real-time dynamic stability control of the chiseling system's posture, and maintaining low amplitude control stability under the chiseling reaction force.

[0014] Optionally, the chiseling system includes a fixed base, a power component disposed within the fixed base, and a chiseling head disposed at the end of the fixed base. A torsion shaft and a traction shaft are rotatably mounted at the end of the fixed base. The torsion shaft is rotatably connected to the end of the forearm away from the upper arm, and the traction shaft is rotatably connected to the telescopic end of the hydraulic cylinder on the forearm. A fixed platform is provided between the power component and the chisel head. The fixed platform is fixedly connected to the output end of the power component. The chisel head is located on the side of the fixed platform away from the power component, and a detachable connection structure is provided between the chisel head and the fixed platform.

[0015] By adopting the above technical solution, the power component inside the fixed base forms a composite transmission structure with the forearm through a torsion shaft and a traction shaft. The hydraulic mechanism drives the traction shaft to change the chisel head tilt angle, while the rigid connection between the fixed platform and the output end of the power component ensures efficient transmission of vibration energy. The chisel head can be quickly replaced through a detachable connection structure, significantly reducing the time required to disassemble and assemble a single chisel head and greatly reducing tool wear and downtime.

[0016] Optionally, the connection structure includes a fixed cylinder, a first insert rod, a second insert rod, and a locking nut. The fixed cylinder is fixed to the side of the fixed platform away from the power component, and the end away from the fixed platform is provided with a cylindrical opening. The side wall of the fixed cylinder is provided with two insertion interfaces in different directions, and the insertion paths formed by the two insertion interfaces intersect each other. The end of the chisel head away from the working surface is slidably inserted into the fixed cylinder, and the two corresponding insertion interfaces are opened in the matching sockets. The first insertion rod passes through the insertion interface and the socket and is fixed by a locking nut. The first insertion rod is also provided with a clearance opening for the second insertion rod to pass through. The second insertion rod passes through the insertion interface, the socket and the clearance opening and is fixed by a locking nut.

[0017] By adopting the above technical solution, the insertion and mating structure of the fixed cylinder and the chisel head provides an axial positioning basis; the first insertion rod passes vertically through the insertion interface and the socket to lock the radial degree of freedom of the chisel head; the second insertion rod crosses through the first insertion rod through the clearance to form a three-dimensional interlocking structure; the locking nut applies a pre-tightening force to make the connection more stable and eliminate the risk of loosening and falling off during operation.

[0018] Optionally, multiple chisel heads are provided and evenly distributed on the fixed platform, and multiple sets of connecting structures are provided corresponding to the chisel heads.

[0019] By adopting the above technical solution, multiple chisel heads are evenly distributed on the surface of the fixed platform to form a matrix impact array; the independent connection structure of each set of chisel heads supports modular replacement in different areas; the collaborative operation of multiple chisel heads increases the effective chisel area in a single operation to many times that of traditional equipment, and compresses the fluctuation rate of chisel point density to a smaller range, significantly improving the bonding strength of the interface between new and old concrete.

[0020] Optionally, the operating system includes two control levers located in front of the driver's console and a control mechanism located in the mounting base. Both control levers are electrically connected to the control mechanism, and the control mechanism is electrically connected to the hydraulic mechanism, the transmission mechanism, and the chiseling system, respectively.

[0021] By adopting the above technical solution, two control levers control the rocker arm's posture and the start and stop of chiseling. After parsing the control lever commands, the control mechanism sends coordinated signals to the hydraulic mechanism, transmission mechanism, and chiseling system, realizing an integrated process operation of walking, positioning, and chiseling. Moreover, the operator can complete all processes from inside the control panel, significantly reducing physical exertion compared to handheld operation.

[0022] Optionally, a sweeping shovel is also provided at the front end of the base plate, and the bottom edge of the sweeping shovel is flush with the bottom surface of the track.

[0023] By adopting the above technical solution, the installation structure with the sweeping blade flush with the underside of the track automatically scrapes away gravel and concrete residue on the ground during the device's movement, preventing debris accumulation from affecting track traction and ensuring continuous passage capability of the work site.

[0024] Optionally, a canopy is provided above the driver's cab, and the canopy and the mounting base are fixedly connected.

[0025] By adopting the above technical solution, the canopy can shield the top of the operator's platform, effectively blocking falling objects and flying debris, and reducing safety risks during operation.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The walking system drives the tracks to move autonomously on the construction site. In conjunction with the multi-stage hydraulic mechanism of the pitching and rocker arm system, the chiseling system can perform precise trajectory positioning in three-dimensional space. The operating system in the cab provides centralized control of walking, rocker arm and chiseling, which completely liberates the operator from traditional hand-held operations. It not only eliminates the risk of climbing at heights, but also greatly extends the continuous operation time. 2. Multiple chiseling heads on the fixed platform form a matrix impact array through a detachable connection structure, which can simultaneously chisel large areas of concrete working surfaces, significantly improving work efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of a concrete roughening device according to an embodiment of this application; Figure 2 yes Figure 1 Schematic diagram of the mid-section roughening system; Figure 3 yes Figure 2 A schematic diagram of the structure at the central chisel head; Figure 4 yes Figure 3 A schematic diagram of the explosion structure at the chisel head.

[0029] Reference numerals: 1. Base plate; 11. Sweeping shovel; 2. Walking system; 3. Mounting base; 31. Driver's platform; 311. Control lever; 32. Canopy; 4. Tilting rocker arm system; 41. Boom; 42. Arm; 43. Hydraulic cylinder; 5. Scraping system; 51. Fixed base; 511. Torsion shaft; 512. Pulling shaft; 52. Scraping head; 521. Socket; 6. Fixed platform; 7. Connecting structure; 71. Fixed cylinder; 711. Insertion interface; 72. First insertion rod; 721. Clearance opening; 73. Second insertion rod; 74. Locking nut. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail below.

[0031] This application discloses a concrete roughening device.

[0032] Reference Figure 1 A concrete roughening device includes a base plate 1, a walking system 2 below the base plate 1, a mounting base 3 rotatably mounted on the base plate 1, a driver's platform 31 mounted on the mounting base 3, a canopy 32 above the driver's platform 31, the canopy 32 and the mounting base 3 being fixedly connected, an operating system inside the driver's platform 31, a pitch rocker arm system 4 at the front end of the mounting base 3, and a roughening system 5 mounted at a position away from the mounting base 3 on the pitch rocker arm system 4.

[0033] Reference Figure 1 The walking system 2 includes tracks and a transmission mechanism. The transmission mechanism is mounted on the base plate 1 and can be used to drive the track drive.

[0034] The transmission mechanism drives the track drive, providing stable and reliable walking power for the device. Since the transmission mechanism driving the track for walking is a conventional technology, it will not be described in detail in this embodiment.

[0035] Reference Figure 1 and Figure 2 The pitch control arm system 4 includes a boom 41, a forearm 42, and a hydraulic mechanism. The boom 41 is rotatably mounted on the mounting base 3, and the forearm 42 is rotatably mounted on the end of the boom 41 away from the mounting base 3. The chiseling system 5 is mounted on the end of the forearm 42 away from the boom 41. The hydraulic mechanism is located between the mounting base 3 and the boom 41, between the boom 41 and the forearm 42, and between the forearm 42 and the chiseling system 5.

[0036] The rotational connection between the boom 41 and the mounting base 3 establishes a first-level pitch freedom, the rotational connection between the forearm 42 and the boom 41 adds a second-level pitch freedom, and the rotational connection between the forearm 42 and the chiseling system 5 adds a third-level pitch freedom, enabling the chiseling system 5 to operate within a large pitch adjustment range in three-dimensional space; while the hydraulic mechanism can precisely control the coordinated movement of the boom 41, forearm 42 and the chiseling system 5, so that the chiseling head 52 forms a programmable trajectory movement path within the working surface, which is especially suitable for the construction of irregular structural surfaces such as curved tunnel lining.

[0037] Reference Figure 1 and Figure 2 The hydraulic mechanism includes multiple hydraulic cylinders 43, each hydraulic cylinder 43 being respectively disposed between the mounting base 3 and the upper arm 41, between the upper arm 41 and the lower arm 42, and between the lower arm 42 and the chiseling system 5, and both ends of each hydraulic cylinder 43 are rotatably connected to the corresponding positions.

[0038] The rotating connection design of each hydraulic cylinder 43 between the mounting base 3 and the upper arm 41, the upper arm 41 and the lower arm 42, and the lower arm 42 and the chiseling system 5 forms a multi-degree-of-freedom hinge mechanism; the pushing and pulling force of the hydraulic cylinder 43 is converted into precise angle adjustment of each joint, realizing real-time dynamic stability control of the chiseling system 5 posture, and maintaining low amplitude control stability under the chiseling reaction force.

[0039] Reference Figure 1 and Figure 2 The chiseling system 5 includes a fixed base 51, a power component disposed in the fixed base 51, and a chiseling head 52 disposed at the end of the fixed base 51. A torsion shaft 511 and a traction shaft 512 are rotatably mounted at the end of the fixed base 51. The torsion shaft 511 is rotatably connected to the end of the forearm 42 away from the upper arm 41, and the traction shaft 512 is rotatably connected to the telescopic end of the hydraulic cylinder 43 on the forearm 42.

[0040] A fixed platform 6 is provided between the power component and the chisel head 52. The fixed platform 6 is fixedly connected to the output end of the power component. The chisel head 52 is located on the side of the fixed platform 6 away from the power component, and a detachable connection structure 7 is provided between it and the fixed platform 6. The power component adopts a drive structure for driving the chisel head 52 in conventional technology, which will not be described in detail here.

[0041] Reference Figure 3 and Figure 4 The connecting structure 7 includes a fixed cylinder 71, a first insert rod 72, a second insert rod 73, and a locking nut 74. The fixed cylinder 71 is fixed to the side of the fixed platform 6 away from the power component, and the end away from the fixed platform 6 is set with a cylindrical opening. Two insertion interfaces 711 with different directions are opened through the side wall of the fixed cylinder 71, and the insertion paths formed by the two insertion interfaces 711 intersect each other.

[0042] The end of the chisel head 52 away from the working surface is slidably inserted into the fixed cylinder 71, and the two corresponding insertion interfaces 711 are opened in the matching sockets 521. The first insertion rod 72 passes through the insertion interface 711 and the socket 521 and is fixed by the locking nut 74. The first insertion rod 72 is also provided with a clearance opening 721 for the second insertion rod 73 to pass through. The second insertion rod 73 passes through the insertion interface 711, the socket 521 and the clearance opening 721 and is fixed by the locking nut 74.

[0043] Furthermore, in order to increase the roughening area of ​​the concrete, multiple roughening heads 52 are provided and evenly distributed on the fixed platform 6. The connecting structure 7 is also provided with multiple sets of roughening heads 52. Multiple roughening heads 52 can form a matrix impact array on the surface of the fixed platform 6 to increase the roughening area. Each roughening head 52 can be directly replaced in a modular manner, which can increase the roughening area while reducing replacement costs.

[0044] Reference Figure 1 The operating system includes two control levers 311 located in front of the driver's cab 31 and a control mechanism located in the mounting base 3. Both control levers 311 are electrically connected to the control mechanism, which is electrically connected to the hydraulic mechanism, the transmission mechanism, and the chiseling system 5, respectively.

[0045] The control mechanism is the same as the control structure of a conventional excavator. After parsing the command of the control lever 311, the control mechanism sends a coordinated signal to the hydraulic mechanism, transmission mechanism and chiseling system 5. Different pitch angles of the boom 41, arm 42 and chiseling head 52 can be adjusted by using two control levers 311 in conjunction with different hydraulic cylinders 43. The two control levers 311 can also be used to control the movement of the tracks and control the rotation of the cab 31.

[0046] This enables integrated operation of walking, positioning, and roughening. Furthermore, the operator can complete all processes from within the control panel 31, significantly reducing physical exertion compared to manual operation.

[0047] Furthermore, in order to enable the tracks to move stably in the working area, refer to Figure 1 A sweeping shovel 11 is also provided at the front end of the base plate 1. In this embodiment, the bottom edge of the sweeping shovel 11 is flush with the bottom surface of the track. In other embodiments, the sweeping shovel 11 can also be rotatably installed at the front end of the base plate 1, and the sweeping shovel 11 can be set to a free lifting state. In conjunction with the lifting power structure, the operating lever 311 can lift and lower the sweeping shovel 11.

[0048] The implementation principle of the concrete roughening device in this application embodiment is as follows: the track is controlled to move by the operating lever 311, and then the extension and retraction of different hydraulic cylinders 43 at different lengths are controlled to realize the pitch angle adjustment of the boom 41, the forearm 42 and the roughening head 52, so that the roughening head 52 is adjusted to the working surface, and the power component is driven to drive multiple roughening heads 52 to roughen the working surface simultaneously. After the roughening of one position is completed, the operator 311 is controlled to rotate the cab 31, so that the roughening head 52 is moved to a new position to continue the roughening operation.

[0049] The above are all optional embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A concrete roughening device, characterized in that: Includes a base plate (1), a walking system (2) is provided below the base plate (1), a mounting base (3) is rotatably mounted on the base plate (1), a driver's cab (31) is provided on the mounting base (3), an operating system is provided inside the driver's cab (31), a pitch rocker arm system (4) is provided at the front end of the mounting base (3), and a chiseling system (5) is installed at a position away from the mounting base (3) of the pitch rocker arm system (4).

2. The concrete roughening device according to claim 1, characterized in that: The walking system (2) includes tracks and a transmission mechanism, which is mounted on the base plate (1) and can be used to drive the track transmission.

3. The concrete roughening device according to claim 2, characterized in that: The pitch rocker system (4) includes a large arm (41), a small arm (42) and a hydraulic mechanism. The large arm (41) is rotatably mounted on the mounting base (3), and the small arm (42) is rotatably mounted on the end of the large arm (41) away from the mounting base (3). The chiseling system (5) is installed at the end of the forearm (42) away from the upper arm (41), and the hydraulic mechanism is located between the mounting base (3) and the upper arm (41), between the upper arm (41) and the forearm (42), and between the forearm (42) and the chiseling system (5).

4. A concrete roughening device according to claim 3, characterized in that: The hydraulic mechanism includes multiple hydraulic cylinders (43), each of which is respectively disposed between the mounting base (3) and the upper arm (41), between the upper arm (41) and the lower arm (42), and between the lower arm (42) and the chiseling system (5), and both ends of each hydraulic cylinder (43) are rotatably connected to the corresponding position.

5. A concrete roughening device according to claim 4, characterized in that: The chiseling system (5) includes a fixed base (51), a power component disposed in the fixed base (51), and a chiseling head (52) disposed at the end of the fixed base (51). A torsion shaft (511) and a pulling shaft (512) are rotatably mounted at the end of the fixed base (51). The torsion shaft (511) is rotatably connected to the end of the forearm (42) away from the upper arm (41). The pulling shaft (512) is rotatably connected to the telescopic end of the hydraulic cylinder (43) on the forearm (42). A fixed platform (6) is provided between the power component and the chisel head (52). The fixed platform (6) is fixedly connected to the output end of the power component. The chisel head (52) is located on the side of the fixed platform (6) away from the power component, and a detachable connection structure (7) is provided between the fixed platform (6) and the power component.

6. A concrete roughening device according to claim 5, characterized in that: The connection structure (7) includes a fixed cylinder (71), a first insert rod (72), a second insert rod (73), and a locking nut (74). The fixed cylinder (71) is fixed to the side of the fixed platform (6) away from the power component, and the end away from the fixed platform (6) is provided with a cylindrical opening. The side wall of the fixed cylinder (71) has two insertion ports (711) in different directions, and the insertion paths formed by the two insertion ports (711) intersect each other. The end of the chisel head (52) away from the working surface is slidably inserted into the fixed cylinder (71), and the two corresponding insertion interfaces (711) are opened in the matching sockets (521). The first insertion rod (72) passes through the insertion interface (711) and the socket (521) and is then fixed by the locking nut (74). The first insertion rod (72) is also provided with a clearance opening (721) for the second insertion rod (73) to pass through. The second insertion rod (73) passes through the insertion interface (711), the socket (521) and the clearance opening (721) and is then fixed by the locking nut (74).

7. A concrete roughening device according to claim 5, characterized in that: Multiple chisel heads (52) are provided and are evenly distributed on the fixed platform (6). The connecting structure (7) is provided with multiple sets corresponding to the chisel heads (52).

8. A concrete roughening device according to claim 3, characterized in that: The operating system includes two control levers (311) located in front of the driver's seat (31) and a control mechanism located in the mounting base (3). Both control levers (311) are electrically connected to the control mechanism, which is electrically connected to the hydraulic mechanism, the transmission mechanism and the chiseling system (5).

9. A concrete roughening device according to claim 3, characterized in that: The front end of the base plate (1) is also provided with a sweeping shovel (11), the bottom edge of which is flush with the bottom surface of the track.

10. A concrete roughening device according to claim 3, characterized in that: A canopy (32) is provided above the driver's cab (31), and the canopy (32) and the mounting base (3) are fixedly connected.

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