Bridge deck concrete chipping trolley
By using unmanned vehicles and sensor systems to precisely control the depth and force of the chiseling process, the problems of low chiseling efficiency and dust pollution in bridge construction have been solved, achieving a highly efficient and safe concrete chiseling effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUIZHOU HIGHWAY ENG GRP
- Filing Date
- 2025-09-01
- Publication Date
- 2026-07-28
AI Technical Summary
In current bridge construction, roughening is inefficient, difficult to control in terms of quality, and dust is harmful to the health of construction workers. Traditional equipment cannot avoid the problems of over- or under-roughing.
An unmanned trolley is used to load the impact hammer. Equipped with a dust suppression device and multiple sensors, it uses infrared, ultrasonic, and vision sensors to detect the concrete surface, precisely control the chiseling depth and force, reduce dust, and improve efficiency.
It achieves an efficient and precise roughening process, reduces dust pollution, avoids problems of over- or under-rough roughening, and improves construction efficiency and safety.
Smart Images
Figure CN224565062U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of concrete roughening technology, specifically a bridge deck concrete roughening trolley. Background Technology
[0002] In bridge construction, to ensure a tight bond between the interlayer concrete or pavement layer and the beam slab, the top surface of the beam slab must be roughened. However, current beam slab roughening methods face numerous problems. On-site roughening primarily relies on manual labor using handheld tools such as pneumatic and electric picks. This method is inefficient and the roughening quality is difficult to control. Furthermore, the exposed reinforcing steel bars on the beam slabs often prevent the use of large roughening devices, making manual roughening time-consuming and inefficient.
[0003] Meanwhile, patent application number 202222843378.0 discloses an efficient bridge beam slab roughening device, including a trolley, a spraying system and a roughening system mounted on the trolley. The roughening system includes two sets of slider rail assemblies fixed on the trolley, and two pneumatic picks fixed between the two sets of slider rail assemblies. The rail assembly includes a rail fixedly connected to the trolley, two sliders mounted on the rail, and each pneumatic pick fixed between the two sliders on the two rails.
[0004] However, in implementing the relevant technology, it was found that the above-mentioned efficient bridge beam roughening device has the following drawbacks: In the traditional process of roughening concrete, it is based on experience and visual observation, and the concrete surface is roughened by hand hammer. This method is prone to over-roughening or incomplete roughening, and the dust generated during the roughening process fills the air and affects the health of construction workers. Utility Model Content
[0005] To address the problems mentioned in the background art, this utility model provides a bridge deck concrete roughening trolley, which features an unmanned trolley carrying an impact hammer to reduce manual construction, a dust suppression device added to the surface of the impact hammer for spraying dust, and various sensors to obtain the required roughening force and position, driving the impact hammer to roughen the concrete, thereby reducing power consumption and improving efficiency.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a bridge deck concrete roughening trolley, including an unmanned trolley, wherein the surface of the unmanned trolley is respectively provided with a roughening construction area and a support area, and a water supply area is provided on the outer side of the unmanned trolley. Preferably, the surface of the impact hammer is abutted against a damping device in an annular array, and the other end of several sets of damping devices is fixedly connected to a support ring. The surface of the support ring is fixedly connected to an anti-sway assembly for supporting the support ring. The anti-sway assembly includes a fixing block, a support rod, a spring, and a base. The spring sleeved on the surface of the support rod presses against the surface of the fixing block. The support rod rotates inside the base and is fixedly connected to the surface of the support ring.
[0007] Preferably, the bottom end of the impact hammer is provided as a roughening area, and a water spray pipe is sleeved on the surface of the impact hammer.
[0008] Preferably, the other end of the water spray pipe is connected to a water tank, and the surface of the water spray pipe has a plurality of sets of spray nozzles arranged in a ring.
[0009] Preferably, the bottom end of the water nozzles in the annular array is configured as a spraying area, and the range of the spraying area is larger than the roughening area.
[0010] Preferably, an extension block is fixedly connected to the top of the impact hammer, a support seat is fixedly connected to the support area of the unmanned vehicle, a vertical groove is provided on the surface of the support seat near the impact hammer, and a support plate is fixedly connected inside the vertical groove of the support seat.
[0011] Preferably, a connecting plate is fitted onto the surface of the support plate, and a spring is pressed against its top end, with the top end of the spring pressing against the top end of the vertical groove of the support base.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses an infrared sensor, an ultrasonic sensor, and a vision sensor in combination to detect the strength of the concrete surface layer and distinguish between the laitance and the base layer. The ultrasonic sensor emits a signal to the concrete surface and determines the depth to be chiseled by the impact hammer based on the received vertical transmission signal. The infrared sensor scans the surface temperature field to indirectly determine the hydration process. The ultrasonic sensor scans the concrete surface and depth to generate a temperature field thermogram, which can directly show the high-temperature and low-temperature areas. Here, the high-temperature area refers to the laitance layer, which is the area that needs to be roughened later, and the low-temperature area refers to the base concrete that does not need to be roughened. The vision sensor is used to identify surface defects and can determine whether the concrete has reached the conditions for roughening by the rate and uniformity of temperature field change.
[0013] 2. This utility model adds an anti-tipping device and an anti-bounce device to the surface of the impact hammer to limit and control the impact hammer so that it is in a reasonable position, thus preventing over-scraping and incomplete scraping during the subsequent roughening process. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the roughening area and the spraying area of this utility model; Figure 3 This is a schematic diagram of the control panel of this utility model; Figure 4 This is a schematic diagram of the anti-tilt component of this utility model; Figure 5 This is a schematic diagram of the damping device of this utility model; Figure 6 This is a schematic diagram of the impact hammer of this utility model in the limiting position.
[0015] In the picture: 1. An unmanned vehicle; 2. Fixing block; 21. Support rod; 22. Spring 1; 23. Base; 24. Support ring; 25. Damping device; 3. Impact hammer; 4. Water tank; 41. Spray pipe; 42. Spray nozzle; 43. Control panel; 44. Infrared sensor; 45. Ultrasonic sensor; 46. Vision sensor; 5. Support base; 51. Support plate; 52. Spring 2; 53. Extension block; 54. Connecting plate.
[0016] 6. Chiseled area; 7. Spraying area. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] like Figures 1 to 6 As shown, this utility model provides a bridge deck concrete roughening trolley, including an unmanned trolley 1. The surface of the unmanned trolley 1 is respectively provided with a roughening construction area and a support area, and a water supply area is provided on the outside of the unmanned trolley 1. The roughening area of the unmanned vehicle 1 includes an impact hammer 3 and a device for limiting and buffering the impact hammer 3. A control panel 43 is set on the surface of the impact hammer 3. The control panel 43 controls an infrared sensor 44, an ultrasonic sensor 45, and a vision sensor 46 via signals. The infrared sensor 44, the ultrasonic sensor 45, and the vision sensor 46 are respectively set at the bottom of the impact hammer 3. After collecting signals, the infrared sensor 44, the ultrasonic sensor 45, and the vision sensor 46 transmit the data vertically to the impact hammer 3 to control the impact force of the impact hammer 3, so as to avoid over-hammering or under-hammering, which would result in poor roughening effect.
[0019] Specifically, the surface of the impact hammer 3 is abutted against a damping device 25 in a ring array. The other end of several sets of damping devices 25 is fixedly connected to a support ring 24. The surface of the support ring 24 is fixedly connected to an anti-sway assembly for supporting the support ring 24. The anti-sway assembly includes a fixing block 2, a support rod 21, a spring 22, and a base 23.
[0020] Furthermore, the bottom end of the impact hammer 3 is set as a roughening area 6, and a water spray pipe 41 is sleeved on the surface of the impact hammer 3. The other end of the water spray pipe 41 is connected to a water tank 4. Several sets of water spray nozzles 42 are arranged in a ring on the surface of the water spray pipe 41. The bottom end of the ring array of water spray nozzles 42 is set as a spraying area 7. The range of the spraying area 7 is larger than the range of the roughening area 6. During the roughening process, the water spray nozzles 42 cover the area where dust is generated to prevent dust from overflowing. The wastewater after dust suppression flows to the concrete surface to absorb the dust attached to the concrete surface and prevent the dust from flying.
[0021] Furthermore, the bottom end of the impact hammer 3 is set as a roughening area 6, and a water spray pipe 41 is sleeved on the surface of the impact hammer 3. The other end of the water spray pipe 41 is connected to a water tank 4, and several sets of water spray nozzles 42 are arranged in a ring on the surface of the water spray pipe 41.
[0022] It is worth noting that the bottom of the annular array of water nozzles 42 is set as the spraying area 7, and the range of the spraying area 7 is larger than the range of the roughening area 6.
[0023] It is worth noting that a vertical groove is opened on the surface of the support base 5. When the impact hammer 3 impacts the relatively hard concrete surface, the impact hammer 3 encounters resistance and slides upward. The extension block 53 on the surface of the impact hammer 3 pushes the connecting plate 54 to slide upward on the surface of the support plate 51. During the sliding process, the connecting plate 54 compresses the second spring 52 and deforms upward. The second spring 52 buffers the connecting plate 54 to prevent the impact hammer 3 from moving too much.
[0024] The unmanned vehicle 1 and the impact hammer 3 are existing technologies and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switches, which are not the main technical points of this patent and will not be described in detail. The "front, rear, left, and right" perspectives of this device are... Figure 1 The direction shown in the diagram is the reference.
[0025] Working principle: The unmanned vehicle 1 is moved to the concrete surface that needs to be roughened. The program is set on the control panel 43. The ultrasonic sensor 45 is used to detect the strength of the concrete surface layer to distinguish between the laitance and the base layer. After the concrete is poured, a laitance layer will form on the surface due to the floating of cement paste and bleeding. The laitance layer has low strength and poor adhesion and must be removed. The ultrasonic sensor 45 emits a signal to the concrete surface and determines the depth to be chiseled by the impact hammer 3 based on the received vertical signal. In addition, the infrared sensor 44 is used to scan the surface temperature field to indirectly determine the hydration process. Because the laitance layer has fewer cement particles and insufficient hydration reaction, and because the bleeding water has a high water content and dissipates heat quickly, its temperature is usually 2-5℃ lower than that of the base layer. With sufficient hydration and high heat release, as well as high aggregate content and stable thermal conductivity, the temperature is relatively higher and more uniformly distributed. The ultrasonic sensor 45 scans the concrete surface and depth to generate a temperature field thermogram, which can directly observe the high-temperature and low-temperature areas. Here, the high-temperature area refers to the laitance layer, which is the area that needs to be roughened later, while the low-temperature area refers to the base concrete that does not need to be roughened. The visual sensor 46 is used to identify surface defects. During the concrete pouring process, honeycomb and pitted holes will form on the surface and shallow areas. The air filling inside has a much lower thermal conductivity than concrete. The temperature difference between the honeycomb-shaped local areas and the surrounding areas is significant, and these areas are marked as key inspection areas. The rate of change and uniformity of the temperature field can be used to determine whether the concrete has reached the conditions for roughening. The unmanned trolley 1 moves the impact hammer 3 to the position where it needs to be roughened. The impact hammer 3 roughens the concrete surface. During the roughening process, the water tank 4 provides water to the spray nozzle 42 through the spray pipe 41. During the spraying process, the spray nozzle 42 sprays the roughened area 6 and reduces dust. When roughening high-strength concrete, such as the concrete in the bridge deck, the impact hammer 3 generates a reaction force during the roughening process due to the hardness of the concrete surface. The reaction force of the impact hammer 3 is buffered by the damping device 25 onto the surface of the support ring 24. When the support ring 24 tilts, the rotating support rod 21 inside the base 23 on the surface of the support ring 24 slides. During the sliding process, the spring 22 on the surface of the support rod 21 presses against the fixing block 2. The reaction force of the spring 22 cancels out the force generated when the impact hammer 3 tilts, reducing the swaying amplitude of the impact hammer 3. This ensures that the impact hammer 3 avoids over- or under-cracking when impacting the concrete surface.
[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.
Claims
1. A bridge deck concrete roughening trolley, comprising an unmanned trolley (1), characterized in that: The surface of the unmanned vehicle (1) is provided with a roughening construction area and a support area, and the outside of the unmanned vehicle (1) is provided with a water supply area. The roughening construction area of the unmanned vehicle (1) includes an impact hammer (3) and a device for limiting and buffering the impact hammer (3). The surface of the impact hammer (3) is provided with a control panel (43). The control panel (43) is controlled by an infrared sensor (44), an ultrasonic sensor (45), and a vision sensor (46) through signals. The infrared sensor (44), the ultrasonic sensor (45), and the vision sensor (46) are respectively located at the bottom of the impact hammer (3).
2. The bridge deck concrete roughening trolley according to claim 1, characterized in that: The impact hammer (3) has a ring array of damping devices (25) pressed against its surface. The other end of several sets of damping devices (25) is fixedly connected to a support ring (24). The surface of the support ring (24) is fixedly connected to an anti-sway assembly for supporting the support ring (24). The anti-sway assembly includes a fixing block (2), a support rod (21), a spring (22), and a base (23). The spring (22) sleeved on the surface of the support rod (21) presses against the surface of the fixing block (2). The support rod (21) rotates inside the base (23) and is fixedly connected to the surface of the support ring (24).
3. The bridge deck concrete roughening trolley according to claim 1, characterized in that: The bottom end of the impact hammer (3) is set as a roughening area (6), and a water spray pipe (41) is sleeved on the surface of the impact hammer (3).
4. The bridge deck concrete roughening trolley according to claim 3, characterized in that: The other end of the water spray pipe (41) is connected to a water tank (4), and the surface of the water spray pipe (41) is arranged in a ring with several sets of water spray nozzles (42).
5. The bridge deck concrete roughening trolley according to claim 4, characterized in that: The bottom end of the water nozzle (42) in the ring array is set as a spraying area (7), the range of which is larger than the range of the roughening area (6).
6. The bridge deck concrete roughening trolley according to claim 3, characterized in that: An extension block (53) is fixedly connected to the top of the impact hammer (3), and a support seat (5) is fixedly connected to the support area of the unmanned vehicle (1). A vertical groove is provided on the support seat (5) near the surface of the impact hammer (3), and a support plate (51) is fixedly connected inside the vertical groove of the support seat (5).
7. The bridge deck concrete roughening trolley according to claim 6, characterized in that: The surface of the support plate (51) is fitted with a connecting plate (54), and the top end of the connecting plate (52) is pressed against the top end of the vertical groove of the support base (5).