A force hammer trailer for bridge detection
By designing a vibration hammer trailer that includes a chassis, a hammer excitation module, an alarm radar, a control module, and a power supply module, the problems of slow movement speed and structural instability of existing equipment have been solved, enabling fast, safe, and flexible bridge inspection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING JIAOTONG UNIV
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-26
AI Technical Summary
Existing mobile vibratory hammer equipment has a slow movement speed, making it difficult to ensure the consistency and repeatability of the test. It also cannot flexibly test different parts of the bridge, and the structure is not stable and safe enough, and the connection method is not standardized enough.
Design a vibration hammer trailer that includes a chassis, a vibration hammer excitation module, an alarm radar, a control module, and a power supply module. It adopts large wheels and flexible movement methods, combining a tractor and manual towing. It is equipped with shock absorbers and lighting and warning functions, and uses a standardized ball joint connection device to achieve rapid movement and safe inspection.
It improves testing efficiency, enhances operational convenience and safety, adapts to various environments, reduces the risk of accidental damage, lowers energy costs, and improves equipment adaptability and testing flexibility.
Smart Images
Figure CN224416392U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge inspection technology, and in particular to a vibratory hammer trailer for bridge inspection. Background Technology
[0002] In the field of infrastructure inspection, such as bridges, vibration equipment is a common tool for assessing the health of bridge structures. The most commonly used vibration tool is the vibratory hammer, which is currently available in handheld or stationary types. While handheld vibratory hammers offer some flexibility, their limited manpower makes it difficult to guarantee consistency and repeatability of the tests. Stationary vibratory hammers, on the other hand, are fixed in location, making movement between different measuring points difficult and hindering flexible testing of different parts of the bridge.
[0003] Existing mobile vibratory hammer devices also have many shortcomings. These devices typically have small wheels, slow movement speed, and can mostly only be pulled by manpower, which greatly restricts the efficiency and flexibility of the inspection work.
[0004] Therefore, a trailer-mounted mobile vibratory hammer device is considered. While trailers have larger wheels and faster movement, the increased wheel size raises the vehicle's ground clearance and shifts its center of gravity, introducing several unresolved issues. To ensure the stability and safety of the equipment, the trailer structure must be adjusted, and the hammer handle design also needs corresponding changes. Furthermore, existing trailer-mounted equipment often only serves as a transport vehicle and cannot be used directly for on-site testing. Some trailer-mounted devices have non-standardized connection methods and insufficient coordination with the towing vehicle, necessitating a comprehensive design of the overall structure. In the field of infrastructure inspection, such as bridges, vibration equipment is a common tool for assessing the health of bridge structures. The most commonly used tool for vibration is the vibratory hammer, currently available in handheld or fixed types. While handheld vibratory hammers offer some flexibility, their limited manpower makes it difficult to guarantee consistent and repeatable testing. Fixed vibratory hammers are disadvantageous due to their fixed location, making movement between different measuring points difficult and hindering flexible testing of different parts of the bridge.
[0005] Existing mobile vibratory hammer devices also have many shortcomings. These devices typically have small wheels, slow movement speed, and can mostly only be pulled by manpower, which greatly restricts the efficiency and flexibility of the inspection work.
[0006] Therefore, a trailer-mounted mobile vibratory hammer device is considered. While trailers have larger wheels and faster movement speeds, the increased wheel size raises the vehicle's ground clearance and shifts its center of gravity, introducing several unresolved issues. To ensure the stability and safety of the equipment, the trailer structure must be adjusted, and the hammer handle design also needs to be modified accordingly. Furthermore, existing trailer-mounted equipment often only serves as a transport vehicle and cannot be directly used for on-site testing. Some trailer-mounted equipment also suffers from non-standardized connection methods and insufficient coordination with the towing vehicle. Therefore, a comprehensive design of the overall structure is necessary. Utility Model Content
[0007] The present invention provides a vibratory hammer trailer for bridge inspection, which solves the technical problems existing in the prior art.
[0008] To achieve the above objectives, the present invention adopts the following technical solution.
[0009] A vibratory hammer trailer for bridge inspection includes a chassis, a hammer excitation module, a hammer structure, an alarm radar, a control module, and a power module.
[0010] The chassis has wheels and a tow bar; the tow bar is located in the front area of the chassis, and the wheels are located in the rear area of the chassis.
[0011] The hammer vibration module, control module, and power module are mounted on the chassis. The hammer vibration module is connected to the hammer structure drive and can drive the hammer structure to swing up and down. The control module is electrically connected to the power module, hammer vibration module, and alarm radar. The control module is located in the front area of the chassis, while the hammer vibration module and power module are located in the rear area of the chassis. The control module, hammer vibration module, and power module are arranged in a triangular pattern, and the axles of the wheels are located below the hammer vibration module and power module.
[0012] The hammer structure has a sensor to acquire the vibration signal generated by the hammer structure hitting the target object and transmit it to the control module. The detection area of the alarm radar coincides with the swing area of the hammer structure. When a human body enters the swing area of the hammer structure, the alarm radar can generate a warning signal and transmit it to the control module, so that the control module can control the hammer excitation module to stop driving the hammer structure to swing.
[0013] The power module supplies power to the hammer excitation module, hammer structure, alarm radar, and control module.
[0014] Preferably, the chassis has a frame structure; one end of the tow bar has a ball joint connector and a tow handle; the tow handle is installed above the tow bar via a U-shaped strip;
[0015] The chassis also has front wheels, and the drawbar has wheel connectors, with the front wheels detachably mounted below the drawbar via the wheel connectors.
[0016] Preferably, the wheel connector includes:
[0017] Mounting plate and mounting strip, which are clamped to the radial sides of the traction rod by a screw and nut structure;
[0018] A vertical mounting rod is installed on the side of the mounting plate; the front wheel is located at the bottom of the mounting rod.
[0019] Preferably, the rear end of the chassis has a pair of tail beams; taillights, headlights, warning radar and turn signals are mounted on the tail beams; the taillights, headlights and turn signals are respectively electrically connected to the control module.
[0020] Preferably, the bottom of the chassis has a wheel axle and a pair of shock absorbers; the shock absorbers are respectively installed on both sides of the lower part of the chassis, the driving wheels are respectively movably installed at both ends of the wheel axle, and the shock absorbers are also connected to both sides of the wheel axle.
[0021] Preferably, the shock absorber is a leaf spring type suspension shock absorber.
[0022] Preferably, the hammer vibration module includes a reducer, a clutch, a motor, a large gear, a small gear, a hammer handle connector, a position switch, and a hammer isolation bracket; the motor, reducer, and hammer isolation bracket are mounted on a chassis; the large gear is movably connected to the chassis; the hammer handle is connected to the large gear via the hammer handle connector and can rotate with the large gear; the hammer is located at one end of the hammer handle; the reducer and clutch are drive-connected; the motor is drive-connected to the small gear via the clutch and reducer, and the large gear and small gear mesh with each other; the control module is connected to the motor circuit; The encoder is connected to the control module circuit to obtain the tilt angle information of the hammer handle; the control module is used to control the motor's forward, reverse, and stop rotation, and also to send disengagement / engagement signals to the clutch; the large gear also has a follow-up protruding shaft; the contacts of the position switch are located on the movement path of the protruding shaft, and when the position switch is triggered by the protruding shaft, the position switch can send a motor reverse stop signal to the control module, causing the hammer handle and hammer to stop reversing; the hammer isolation bracket is located on the reverse path of the hammer handle; the power module supplies power to the motor, clutch, and encoder.
[0023] Preferably, the hammer structure includes a hammer handle and a hammer, with the hammer mounted at one end of the hammer handle and the other end of the hammer handle connected to the drive output end of the hammer excitation module; the hammer handle has a bent portion, with the bending direction of the bent portion facing the rear side area of the chassis.
[0024] Preferably, the hammer includes a hammer body, a hammer head at one end of the hammer body, and a hammer control module at the other end. The hammer body also has a force sensor. The hammer control module is communicatively connected to the force sensor and the control module.
[0025] Preferably, it also includes a motor controller and an inverter mounted on the chassis; the inverter is used to convert the DC power output from the power module into AC power, and the motor controller is used to convert the AC power output from the inverter into three-phase power and supply it to the motor.
[0026] As can be seen from the technical solutions provided by the embodiments of this utility model above, the vibratory hammer trailer for bridge inspection provided by this utility model includes a chassis, a hammer excitation module, a hammer structure, an alarm radar, a control module, and a power module. The chassis has wheels, a tow bar, and front wheels. The tow bar is located in the front area of the chassis, and the wheels are located in the rear area of the chassis. The hammer excitation module, control module, and power module are mounted on the chassis. The hammer excitation module is driven and connected to the hammer structure. The control module is electrically connected to the power module, the hammer excitation module, and the alarm radar. The control module is located in the front area of the chassis, and the hammer excitation module and power module are located in the rear area of the chassis, arranged in a triangular pattern, so that the center of gravity of the vibratory hammer trailer is close to the front area of the chassis. The hammer structure is used to acquire the vibration generated when a target is struck by the hammer structure. The detection area of the alarm radar coincides with the swing area of the hammer structure, and is used to generate a warning signal when a person enters the swing area of the hammer structure. The vibratory hammer trailer provided by this utility model has the following advantages:
[0027] ① Improved inspection efficiency: The use of large wheels and flexible movement allows the hammer trailer to quickly reach the inspection location, significantly improving the efficiency of the inspection work compared to traditional hammer trolleys.
[0028] ② Enhanced ease of operation: The combination of tractor and manual towing adapts to various complex testing site conditions, while facilitating long-distance transport and movement between multiple testing points.
[0029] ③ Enhanced operational safety: The rational structural layout and center of gravity design, coupled with shock absorbers under the wheels, effectively reduce the risk of overturning during operation and movement. Lighting and indicator functions, as well as radar ranging and warning functions, provide operators with a clear working environment and accurate distance judgment, avoiding collisions and operational errors.
[0030] ④ Enhanced Equipment Adaptability: The battery module's insulated enclosure and fan design enable the equipment to operate normally in various environments, unaffected by temperature changes. Standardized ball joint connectors increase compatibility with different tractor units. The tractor unit charges the trailer battery while in motion, reducing reliance on external charging equipment and saving energy costs.
[0031] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of the invention. Attached Figure Description
[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0033] Figure 1 A three-dimensional schematic diagram of a vibratory hammer trailer for bridge inspection provided by this utility model;
[0034] Figure 2 A schematic diagram of the chassis of a vibratory hammer trailer for bridge inspection provided by this utility model;
[0035] Figure 3 A schematic diagram showing the hammer inclination angle and distance of a vibratory hammer trailer used for bridge inspection, provided by this utility model;
[0036] Figure 4 A three-dimensional schematic diagram of the force hammer excitation module of a force hammer trailer for bridge inspection provided by this utility model;
[0037] Figure 5 This utility model provides a partial three-dimensional schematic diagram of the force hammer excitation module of a force hammer trailer for bridge inspection, which shows the connection relationship between the large gear, the large gear fixing component and the hammer handle.
[0038] Figure 6 A partial plan view of the force hammer excitation module of a force hammer trailer for bridge inspection provided by this utility model, used to show the state in which the protruding shaft is not in contact with the position switch;
[0039] Figure 7 A partial three-dimensional schematic diagram of the force hammer excitation module of a force hammer trailer for bridge inspection provided by this utility model, used to show the state in which the protruding shaft does not contact the position switch;
[0040] Figure 8 A partial three-dimensional schematic diagram of the force hammer excitation module of a force hammer trailer for bridge inspection provided by this utility model, used to show the state of the protruding shaft contacting the position switch;
[0041] Figure 9 This utility model provides a partial three-dimensional schematic diagram of the force hammer excitation module of a force hammer trailer for bridge inspection, which shows the positional relationship between the large gear bracket, position switch and encoder on the rear side of the large gear;
[0042] Figure 10 This utility model provides a partial three-dimensional schematic diagram of the force hammer excitation module of a force hammer trailer for bridge inspection, which shows the connection relationship between the encoder, coupling and large gear.
[0043] Figure 11 A schematic diagram showing the encoder connection and disassembly of the force hammer excitation module of a force hammer trailer for bridge inspection provided by this utility model.
[0044] Figure 12 A partial three-dimensional schematic diagram of the drawbar area of a vibratory hammer trailer for bridge inspection provided by this utility model;
[0045] Figure 13 This is a partial three-dimensional schematic diagram from another perspective of the tow bar area of a vibratory hammer trailer for bridge inspection provided by this utility model.
[0046] In the picture:
[0047] 1. Ball joint connector 2. Traction handle 3. Front wheel connector 31. Mounting plate 32. Mounting strip 33. Mounting rod 4. Front wheel 5. Traction rod 6. Control module 7. Power module;
[0048] 8. Force hammer vibration module; 801. Large gear; 802. Large gear fixing part; 803. Protruding shaft part; 804. Small gear; 805. Reducer output shaft; 806. Reducer; 807. Motor; 808. Motor bearing; 809. Reducer bracket; 810. Motor bracket; 811. Large gear bracket; 812. Small gear bracket; 813. Encoder; 814. Position switch; 815. Coupling;
[0049] 9. Hammer Structure; 91. Hammer Head; 92. Hammer Body; 93. Hammer Control Module; 94. Force Sensor; 95. Hammer Handle; 96. Hammer Handle Connector; 97. Bending Section;
[0050] 10. Chassis 11. Wheels 12. Taillights 13. Turn signals 14. Headlights 15. Warning radar 16. Shock absorbers 17. Wheel axles 18. U-shaped strips. Detailed Implementation
[0051] 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.
[0052] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or couplings. The term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.
[0053] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.
[0054] To facilitate understanding of the embodiments of this utility model, the following will provide further explanation and description with reference to the accompanying drawings and several specific embodiments. These embodiments do not constitute a limitation on the embodiments of this utility model.
[0055] See Figures 1 to 13 This utility model provides a vibratory hammer trailer for bridge inspection, including a chassis 10, a hammer excitation module 8, a hammer structure 9, an alarm radar 15, a control module 6, and a power module 7.
[0056] The chassis 10 has a traveling wheel 11 and a tow bar 5 and a front wheel 4. The tow bar 5 is located in the front area of the chassis 10, and the front wheel 4, tow bar 5, and traveling wheel 11 are located in the rear area of the chassis 10.
[0057] The hammer vibration module 8, control module 6, and power module 7 are mounted on the chassis 10. The hammer vibration module 8 is driven by the hammer structure 9 and can drive the hammer structure 9 to swing up and down. The control module 6 is electrically connected to the power module 7, the hammer vibration module 8, and the alarm radar 15. The hammer structure 9 has a sensor to acquire the vibration signal generated by the hammer structure 9 striking the target object and transmit it to the control module 6. The control module 6 is located on the front side of the chassis 10, while the hammer vibration module 8 and power module 7 are located on the rear side of the chassis 10. The control module 6, hammer vibration module 8, and power module 7 are arranged in a triangular pattern, so that the center of gravity of the hammer-driven trailer is close to the front side of the chassis 10.
[0058] The detection area of the alarm radar 15 coincides with the swing area of the hammer structure 9. When a human body enters the swing area of the hammer structure 9, the alarm radar 15 can generate a warning signal and transmit it to the control module 6, so that the control module 6 can control the hammer excitation module 8 to stop driving the hammer structure 9 to swing.
[0059] The power supply module 7 supplies power to the hammer excitation module 8, the hammer structure 9, the alarm radar 15, and the control module 6. The power supply method can be appropriately set according to the actual situation. For example, it can be connected to the power supply of the tractor that tows the hammer excitation trailer, or the power supply module 7 can be a DC power supply, or it can be connected to the mains power.
[0060] To ensure a stable center of gravity and optimize the placement of components, in the preferred embodiment of this invention, the hammer vibration module 8, power module 7, and control module 6 are arranged in a triangular pattern on the chassis 1010. The control module 6 is positioned near the front of the trailer (preferably near the front of the vehicle), while the hammer vibration module 8 and power module 7 are located at the rear of the trailer. The wheel axle 17, which mounts the two wheels 11, is positioned below the hammer vibration module 8 and power module 7, either directly below them or slightly behind. Since the hammer vibration module 8 and power module 7 are the heaviest components of the trailer, this layout, through precise counterweight design, positions the overall center of gravity slightly towards the front of the chassis 10 relative to the wheel axle 17. This ensures the stability of the equipment when stationary or during rearward hammering, effectively preventing rollover. The purpose is to guarantee the balance and stability of the equipment under various operating conditions and improve operational safety.
[0061] In the preferred embodiment provided by this utility model, based on the increased ground clearance of the chassis 10, a new shape and length of the hammer handle 95 are designed, and the hammer handle 95 is designed with a certain angle of curvature to ensure that the hammer head 91 of the vehicle-mounted hammer can normally strike the ground and bridge piers. For example Figure 1 , 3 As shown in Figure 4, the hammer structure 9 includes a hammer handle 95 and a hammer. The hammer is installed at one end of the hammer handle 95, and the other end of the hammer handle 95 is connected to the drive output end of the hammer excitation module 8. The hammer handle 95 has a bent portion 97, and the bending direction of the bent portion 97 is towards the rear side of the chassis 10.
[0062] In a preferred embodiment of the present invention, the chassis 10 is a frame structure and is made of high-strength and lightweight materials to reduce weight while ensuring strength.
[0063] like Figure 12 and 13As shown, the tow bar 5 has a ball joint connector 1 and a towing handle 2 at one end. The ball joint connector 1 is located at the end of the tow bar 5. The towing handle 2 is mounted on top of the tow bar 5 via a U-shaped strip 18. The ball joint connector 1 is used to connect with the tractor unit. The ball joint uses a standardized design, such as a commonly used ball joint structure, which can adapt to various vehicles, ensuring a tight and stable connection between the ball joint connector 1 and the tractor unit, and also ensuring universality and convenience in connecting with different tractor units. For example, in one feasible embodiment, the size of the ball joint connector 1 matches the size of the ball joint used by the tractor unit, using a standardized design of 50mm. This ensures a tight and stable connection between the ball joint connector 1 and the tractor unit.
[0064] This vibratory hammer trailer offers two flexible mobility options: vehicle towing and manual towing, adapting to different work scenarios and environments. A handle is installed near the ball joint connector 1. The towing rod 5 is relatively long, meaning a longer lever arm for manual lifting, facilitating the lifting of the front wheels 4 and enabling manual towing. In one feasible embodiment, the chassis also includes front wheels 4, and the towing rod 5 has wheel 11 connectors. The front wheels 4 are detachably mounted below the towing rod 5 via these wheel 11 connectors. The wheel 11 connector includes: a mounting plate 31 and a mounting strip 32, which are clamped to the radial sides of the towing rod 5 by a screw and nut structure; a vertical mounting rod 33, mounted on the side of the mounting plate 31 (the side facing away from the towing rod 5); and the front wheels 4 located at the bottom of the mounting rod 33. The wheel 11 connector, secured by screws and nuts, allows for easy assembly and disassembly as needed. When manually towed, the mounting strip 32 and the mounting plate 31 (containing the mounting rod 33 and the front wheel 4) are secured to the radial sides of the towing rod 5 by the screws and nuts. When towed by a vehicle, the mounting plate 31 and mounting strip 32 can be removed by loosening the screws and nuts. The number of mounting strips 32 can be adjusted according to actual needs; for example, the figure shows two mounting strips 32, with two sets of screws and nuts. Each set of screws and nuts corresponds to one mounting strip 32, and each set includes a pair of screws and nuts, positioned above and below the towing rod 5 during installation.
[0065] The connection structure employs a standard-compliant connection method. When the tractor unit tows the trailer, the power module 7 of the trailer is charged through the power transmission channel to ensure sufficient battery power. Simultaneously, control signals and data are transmitted in real time via signal transmission lines, enabling the tractor unit to monitor and adjust the trailer's operating status, while the trailer can receive timely commands from the tractor unit. The connection between the control module 6 and the preceding vehicle adopts a connection method compliant with ISO 11446, enabling the transmission of power and signals, such as the 12V 13-pin electrical connector and corresponding connection circuit described in ISO 11446. The control module 6 receives power and control signals from the tractor unit through this connector. When the tractor unit sends a lighting activation signal, the control module 6 activates the corresponding drive circuit based on this signal, causing the headlights 14 to illuminate. Similarly, for the turn signals 13, the control module 6 drives the turn signals 13 to flash at a specific frequency based on the turn commands from the tractor unit. Furthermore, the control module 6 also has a monitoring function, capable of detecting the current and voltage status in the connection lines to determine if a fault exists and feeding back the fault information to the tractor unit. When the tractor unit tows the trailer, it charges the trailer's power module 7 via the power transmission channel to ensure sufficient battery power. Simultaneously, control signals and data are transmitted in real time via signal transmission lines, enabling the tractor unit to monitor and adjust the trailer's operating status, while the trailer can promptly receive instructions from the tractor unit.
[0066] The wheel axle 17 bears the weight of the entire equipment. One end of the shock absorber 16 is connected to the wheel axle 17, and the other end is connected to the chassis 10, serving as a shock absorber and buffer.
[0067] In a preferred embodiment of this utility model, a lighting and prompting system is also provided, which consists of the following two parts:
[0068] (1) Lighting and Warning Configuration: The trailer is equipped with various lights of different colors and functions at the rear, including red taillights 12 (marker lights), yellow turn signals 13, and white headlights 14. The headlights 14 can be set to illuminate when reversing to assist rearward observation. These lights can promptly reflect different working states of the trailer. At the same time, the brightness and illumination range of the lights have been optimized to meet the lighting needs at night and in low-light environments.
[0069] (2) Distance measurement and warning function: A high-precision radar distance measuring device is installed at the rear of the trailer, which can accurately measure the distance between the trailer and obstacles or targets behind it in real time. The radar distance measuring device is connected to the control module 6. When the distance to the target is detected to reach the preset appropriate hammering distance, an alarm signal will be triggered to remind the operator through sound, light or display screen. In some feasible embodiments, the position of the alarm radar 15 can be appropriately set to make it have the function of the radar distance measuring device. Because the hammer handle 95 of the hammer used has an inclination, the hammer head 91 has an angle when hammering the bridge pier backward. The distance measuring device of the radar distance measuring device can prevent excessive impact when reversing, and can also warn the distance to the bridge pier when hammering the bridge pier, so that the set appropriate hammering distance can be reached. At this time, the tangent of the hammer head 91 can be perpendicular to the hammering surface when hammering the bridge pier.
[0070] In some feasible embodiments, the rear end of the chassis has a pair of spaced-apart tail beams. Each tail beam is equipped with a taillight 12, a lighting lamp 14, a warning radar 15, and a turn signal 13. The warning radar 15, taillight 12, lighting lamp 14, and turn signal 13 are respectively electrically connected to a control module. The detector head of the warning radar 15 can be located inside the tail beam to ensure that its detection range coincides with the swing range of the hammer 91.
[0071] The purpose of this design is to: effectively improve the safety and visibility of the trailer during road travel and inspection work through the lighting and warning system, reducing the possibility of accidents; and significantly improve the efficiency of the inspection operation by enhancing the ranging and warning function of the rear-mounted radar ranging device, reducing the difficulty of manually operating the mobile equipment while ensuring distance, making the inspection work more convenient and efficient. The warning radar 15 in this embodiment can be a mature passenger car reversing radar device with a built-in audible warning function; its specific installation method will not be described here.
[0072] In the preferred embodiment provided by this utility model, the hammer vibration module 8 can realize the rotational vibration of the hammer driven by the motor 807, which can satisfy the requirements of hammering the bridge pier forward and hammering the bridge deck downward. Its function is to meet the vibration requirements of different detection parts.
[0073] For example, in one embodiment, a wirelessly rotating force hammer vibration module 8 driven by a self-developed motor 807 is used. During testing, according to the instructions of the control module 6, the force hammer structure 9 can perform forward hammering of the bridge pier and downward hammering of the bridge deck. Internally, it is equipped with a precision motor 807 and a mechanical transmission mechanism, which can accurately control the force, frequency, and angle of the hammering. By continuously adjusting the excitation parameters, the force hammer vibration module 8 can adapt to the testing needs of bridges of different types and orientations, providing strong support for obtaining accurate bridge dynamic characteristic data. The force hammer vibration module 8 is equipped with a wireless transmission component, enabling the transmission of collected data to an external host computer.
[0074] Specifically, in this embodiment, such as Figures 4 to 11 As shown, the hammer structure 9 includes: hammer, hammer handle 95, hammer handle connector 96, large gear 801, small gear 804, reducer 806, clutch, motor 807, control module 6, encoder 813, position switch 814 and hammer isolation bracket.
[0075] The motor 807, reducer 806, hammer isolation bracket, and power module 7 are mounted on the chassis. Specifically, the motor 807 is mounted on the motor bracket 810, the reducer is mounted on the reducer bracket, and the power module 7 can be mounted using a common structure. The large gear 801 is detachably connected to the chassis 10 via the large gear bracket 811. The hammer handle 95 is connected to the large gear 801 via the hammer handle connector 96 and can swing together with the rotation of the large gear 801. The hammer is located at one end of the hammer handle 95. The reducer 806 is driven by the clutch. The motor 807 is driven by the clutch, reducer 806, and pinion 804. The large gear 801 and pinion 804 mesh with each other, and the pinion 804 is detachably mounted on the chassis 10 via the pinion bracket 812. The control module 6 is electrically connected to the motor 807. The encoder 813 is electrically connected to the control module 6 and is used to acquire the tilt angle information of the hammer handle 95. Control module 6 controls the forward, reverse, and stop rotation of motor 807, and sends control signals to the clutch for engagement / disengagement. The large gear 801 also has a follower protruding shaft 803. The contacts of position switch 814 are located on the movement path of the protruding shaft 803. Position switch 814 is electrically connected to control module 6 and sends a reverse stop signal to motor 807 to control module 6. A hammer blocking bracket is located on the reverse path of hammer handle 955 and is used to block the swing of hammer handle 95. The hammer blocking bracket can adopt a conventional structure, such as a concave bracket, and is therefore not shown in the figure. When the protruding shaft 803 rotates with the reversing large gear 801, triggering position switch 814, position switch 814 sends a reverse stop signal to control module 6, causing control module 6 to stop motor 807, thus stopping the reverse rotation of large gear 801, hammer handle 95, and hammer. The power module 7 is used to supply power to the motor 807, clutch, encoder 813, position switch 814 and control module 6.
[0076] It should be understood that the terms "large gear 801" and "small gear 804" in this device are based on commonly used mechanical terminology. "Large gear 801" signifies a higher module and a larger diameter. In the embodiments of this invention, the small gear 804 is located on the opposite power input side, and the large gear 801 is located on the output side. This is a conventional transmission ratio design in the art, which serves to reduce the rotational speed of the large gear 801 and increase the output torque. Therefore, "large" and "small" are relative terms.
[0077] In some feasible embodiments, the motor 807 is connected to the clutch via a bearing, and the other end of the clutch is connected to the reducer 806 via a bearing. When energized, the two bearings rotate concentrically. The bearing at the output end of the reducer 806 is connected to a pinion 804, which meshes with a large gear 801, driving the large gear 801 to rotate. The large gear 801 is connected to a large gear fixing member 802, which is connected to a hammer handle connector 96 for fixing the hammer, so that the hammer rotates in the same direction and at the same speed as the large gear 801.
[0078] like Figures 5 to 10 As shown, the large gear fixing component 802 has a protruding shaft 803, and the rear large gear bracket 811 is connected to an encoder 813 and a position switch 814. The encoder 813 is installed on the large gear bracket 811 to monitor the rotation angle during the rotation process. When the hammer strikes the ground in the forward direction, it determines whether it has reached the preset angle position and stops the operation in time. The protruding shaft 803 and the position switch 814 are pre-adjusted and installed in a suitable position so that when the hammer swings back to the initial position, the protruding shaft 803 just contacts the contact of the position switch 814, triggering the switch, transmitting the position information of the hammer reset, stopping the reverse rotation in time, and stopping it in the initial position. In case of electrical control failure, the hammer blocking bracket serves as a backup plan to hold the hammer handle 95 in time, preventing the hammer from excessively reversing and damaging the equipment. As shown in the figure, the hammer blocking bracket is fixedly installed on the chassis 10 and located on the reverse rotation path of the hammer handle 95. It should be understood that when the position switch 814 is triggered, it sends an electrical signal to the control module 6 to stop the reverse rotation of the motor 807, and the on / off state of the motor 807 circuit is controlled by the control module 6.
[0079] In some embodiments, a separate controller for the motor 807 can also be provided. The control module 6 circuit is connected to the controller of the motor 807 and controls the operation mode of the controller of the motor 807 according to the set logic. The controller circuit of the motor 807 is connected to the motor 807 and is responsible for controlling the operation of the motor 807 while performing single-phase to three-phase power conversion (an inverter can be provided accordingly). The power supply module is connected to each power-requiring device to supply power to it.
[0080] To ensure the stability of each component during operation, the large gear 801, reducer 806, and motor 807 are each connected to a bracket, which is connected to the chassis. The reducer output shaft 805 also has stable support.
[0081] In the preferred embodiments provided by this utility model, such as Figure 1 As shown, the hammer includes a hammer body 92, a hammer head 91 at one end of the hammer body 92, and a hammer control module 93 at the other end. The hammer body 92 also has a force sensor 94 (which can be set in...). Figure 1 (The hammerhead 91 shown is located behind the hammer). The hammer control module 93 is communicatively connected to the force sensor 94 and the control module 6.
[0082] like Figure 10 and 11 As shown, the large gear fixing member 802 is located at the centerline of the large gear 801, and the center of the large gear fixing member 802 coincides with the axis of rotation of the large gear 801. The encoder 813 is located on the end face of the large gear 801 on the other side of the axial direction, and the angle sensing head of the encoder 813 is connected to the center of the large gear fixing member 802 through the coupling 815 on the large gear bracket 811. The swing angle of the hammer handle is obtained by obtaining the swing angle of the large gear fixing member 802. The function of the coupling 815 is to transmit torque so that the angle sensing head of the encoder 813 and the center of the large gear fixing member 802 rotate synchronously (the body of the encoder 813 is fixed).
[0083] In some feasible embodiments, the power module 7 uses a battery pack, which converts the DC power from the battery to 220V AC power via an inverter, and then the controller of the motor 807 converts the 220V single-phase power to 220V three-phase power for the motor 807. In addition, the power module 7 may also include a circuit processing device that can convert 48V to 24V to power the control module 66. The power module 7 includes overload and short-circuit protection circuits to ensure the safe and stable operation of the system. Of course, the power module 7 may also have the function of connecting to mains power.
[0084] In some other preferred embodiments, the main components of this device adopt the following selection scheme:
[0085] The hammer assembly is a self-made wireless hammer device with a built-in wireless data acquisition and transmission module, which can transmit data with the main control module 24 of this device.
[0086] Power module 7 uses a 48V battery, which converts the 48V DC power to 220V AC power via an inverter. Then, the controller of motor 807 converts the 220V AC power to 220V three-phase AC power to supply the three-phase AC motor. Power module 7 includes overload and short-circuit protection circuits to ensure safe and stable system operation. Motor 807 is a YS series 9014 three-phase AC motor. Reducer 806 is an Ouyuda RV series worm gear reducer NMRV-90B5 with a center distance of 75mm and a speed ratio of 7.5 to meet specific load requirements. The corresponding clutch is a Tianjin Jieyuan DLD6-20 / A with an operating voltage of 24V, effectively enabling power connection and switching. The ratio of pinion 804 to gear 801 is 1:6. The rapid rotation of pinion 804 (20 teeth) provides sufficient torque for gear 801 (120 teeth). The overall transmission ratio design allows the equipment to obtain a large output torque at lower speeds.
[0087] Power module 7 includes some circuit processing devices that can convert 48V to 24V to power the main control module 24. Control module 66 is a custom-designed circuit board equipped with an STM32F103 core MCU. This module integrates multiple sensor interfaces, has real-time data processing capabilities, and can connect to other sensors to expand functionality. Considering system reliability and safety, the control module 66's housing is designed with protective features.
[0088] Encoder 813 is an incremental photoelectric rotary encoder, which provides high-precision position and speed feedback. Position switch 814 is an Omron Z-15GQ21-B limit switch. Limit switches are suitable for many different types of mechanical systems and applications, from industrial equipment to household appliances, and typically offer high reliability.
[0089] The working principle of the wireless rotating force hammer excitation module 8 is as follows:
[0090] Before officially starting the hammering, the zero point needs to be adjusted. Move the hammer away from the hammering surface, and reverse the large gear 801 so that it contacts the position switch 814 at a certain moment, which is the initial position of the hammer. Set this moment as the zero point of the encoder 813's rotation angle.
[0091] The hammering officially begins. The required rotational speed of motor 807 is calculated based on the energy needed for the impact using a field workstation (not shown), and wirelessly transmitted to control module 6. After the workstation wirelessly sends a work command to control module 6, control module 6 accelerates motor 807 forward according to the set value. The rotation of motor 807 drives the connected motor bearing 808 and one end of the clutch to rotate. The clutch is engaged, causing the input shaft of reducer 806 to rotate concentrically and at the same speed as the motor bearing 808 at the other end of the clutch. Through the action of reducer 806, the output shaft 805 of the reducer rotates. This, in turn, drives the pinion 804, gear 801, hammer handle 95, and hammer head 91 to rotate forward at the planned speed, striking the preset impact surface. When encoder 81330 detects that the rotation angle set by control module 6 has been reached, the hammer should strike the bridge surface precisely and should not rotate forward any further. Therefore, control module 6 controls the clutch to open, which stops the rotation of the reducer output shaft 805, pinion 804, gear 801, and the entire hammer via the reducer 806 at the rear of the clutch, preventing damage to components from excessive angles. The hammer head 91 strikes the ground, and force sensor 944 transmits the collected data to hammer control module 93. Hammer control module 93 then wirelessly transmits the collected data to the field workstation, thus achieving data acquisition.
[0092] Subsequently, control module 66 controls motor 807 to switch from forward to reverse, and the clutch engages. The bearings and gears 804 of reducer 806 begin to reverse, driving the hammer to rotate in the opposite direction, gradually moving it away from the hammering surface. When the large gear 801 rotates in the reverse direction to contact position switch 814, it indicates that the initial position has been reached and further reversal is not allowed. Control module 66 then disengages the clutch, and motor 807 stops. In the event of an electrical control malfunction (i.e., a failure of position switch 814), as a safety measure, the hammer blocking bracket can promptly stop the hammer handle 95 after the large gear 801 continues to rotate (a short distance), preventing the hammer from excessively reversing.
[0093] The above process completes one hammer strike and hammer reset.
[0094] Alternatively, existing finite force hammer mechanisms can also be used.
[0095] The power module circuit connects the hammer excitation module 8 and the control module 6, responsible for providing power and simultaneously enabling charging and power supply. The battery box is a heat-insulated enclosure with a fan on top, allowing it to operate normally under different ambient temperatures. Its function is to ensure a continuous and stable power supply for the equipment, adapting to various extreme environments.
[0096] The control module 6 has multiple functions, including receiving signals from the tractor, controlling the charging and discharging of the power module 7, controlling the hammer impact module to communicate with the host computer to achieve hammer impact, controlling the lights, and controlling the radar 15 signal. This enables centralized intelligent control of the entire equipment, improving work efficiency and coordination.
[0097] In one feasible embodiment, the power module 7 employs a high-performance battery pack based on existing technology, connected via wires to the hammer excitation module 8, control module 6, and other electrical components. When the tractor is towing the trailer, the power module receives charging from the tractor through the power transmission channel in the connection structure, replenishing the battery's energy. When the equipment is in operation, the power module 7 provides stable power support to the hammer excitation module 8, ensuring its continuous hammering operation. Simultaneously, it also powers components such as the control module 6, lights, and radar 15, ensuring their normal operation. Because the battery box features a heat-insulated enclosure design and is equipped with a fan, it can maintain a suitable operating temperature for the battery in extreme environments such as high or low temperatures, effectively improving the battery's temperature adaptability and performance stability.
[0098] Specifically, firstly, it can receive instructions from an external host computer and convert them into specific operating signals, which are then transmitted to components such as the hammer excitation module 8, power module 7, lights, and radar 15. Secondly, it controls the charging and discharging functions of the tractor and power module 7. When the tractor is towing the trailer, it charges the trailer's power module 7 through the power transmission channel to ensure sufficient battery power. At the same time, it uses signal transmission lines to transmit control signals and data in real time, enabling the tractor to monitor and adjust the trailer's operating status, while the trailer can also receive instructions from the tractor to control the taillights 12, turn signals 13, and headlights 14 to turn on and off.
[0099] This utility model also provides an embodiment for exemplarily demonstrating the use of this vibratory hammer trailer:
[0100] When a bridge needs to be inspected, the tractor unit is first connected to the vibratory hammer trailer via ball joint connector 1. The operator starts the tractor unit, and the trailer is towed to the bridge inspection site. During the journey, the tractor unit charges the trailer's power module 7 via the power transmission channel to ensure sufficient battery power. Simultaneously, external operators can monitor the trailer's status and surrounding environment through the taillights 12, turn signals 13, and headlights 14 at the rear of the chassis 10, ensuring driving safety.
[0101] Upon arrival at the testing site, if the towing vehicle cannot directly reach the specific testing point, the operator can choose to lift the front wheel 4 using the manual towing handle 2 on the ball joint connection device 1 and move the trailer to the designated location by manual dragging.
[0102] When reversing to approach a detection point, the rear-mounted warning radar 15 monitors the distance to the obstacle or detection point in real time. When the distance reaches the preset appropriate hammering distance, the warning radar 15 will emit a warning sound to remind the operator to stop moving. Because the hammer handle 95 of the hammer has an angle, the hammer head 91 has an angle when hammering the bridge pier backward. When reversing to perform the task of hammering the bridge pier, the warning radar 15 can indicate the distance to the bridge pier, allowing the operator to reach the set appropriate hammering distance (at which the tangential surface of the hammer head 91 can be exactly perpendicular to the hammering surface when hammering the bridge pier), reducing the pressure on the towing personnel to manually control the distance. Figure 3 As shown.
[0103] During the inspection process, control module 6 acts as the core, coordinating and controlling the operation of other modules in real time. The power module supplies power to the electrical equipment. Control module 6 receives instructions from the host computer and controls the hammer vibration module 8 to operate. The hammer vibration module 8, according to the instructions, hammers the bridge piers or bridge deck forward or downward. During the hammering process, the wheel axle 17 ensures the stable rotation of the wheels 11, and the shock absorber 16 effectively reduces vibration, ensuring the accuracy and stability of the hammering. Throughout the entire inspection process, the electrical connections between all electrical components are stable and reliable, achieving efficient, accurate, and safe bridge inspection operations.
[0104] In summary, this utility model provides a vibratory hammer trailer for bridge inspection, comprising a chassis, a hammer excitation module, a hammer structure, an alarm radar, a control module, and a power module. The chassis has wheels, a tow bar, and front wheels. The tow bar is located in the front area of the chassis, and the wheels are located in the rear area. The hammer excitation module, control module, and power module are mounted on the chassis. The hammer excitation module is driven and connected to the hammer structure. The control module is electrically connected to the power module, the hammer excitation module, and the alarm radar. The control module is located in the front area of the chassis, while the hammer excitation module and power module are located in the rear area, arranged in a triangular pattern, so that the center of gravity of the vibratory hammer trailer is close to the front area of the chassis. The hammer structure is used to acquire the vibration generated when a target is struck by the hammer structure. The detection area of the alarm radar coincides with the swing area of the hammer structure, and is used to generate a warning signal when a person enters the swing area of the hammer structure. The vibratory hammer trailer provided by this utility model has the following advantages:
[0105] ① Improved inspection efficiency: The use of large wheels and flexible movement allows the hammer trailer to quickly reach the inspection location, significantly improving the efficiency of the inspection work compared to traditional hammer trolleys.
[0106] ② Enhanced ease of operation: The combination of tractor and manual towing adapts to various complex testing site conditions, while facilitating long-distance transport and movement between multiple testing points.
[0107] ③ Enhanced operational safety: The rational structural layout and center of gravity design, coupled with shock absorbers under the wheels, effectively reduce the risk of overturning during operation and movement. Lighting and indicator functions, as well as radar ranging and warning functions, provide operators with a clear working environment and accurate distance judgment, avoiding collisions and operational errors.
[0108] ④ Enhanced Equipment Adaptability: The battery module's insulated enclosure and fan design enable the equipment to operate normally in various environments, unaffected by temperature changes. Standardized ball joint connectors increase compatibility with different tractor units. The tractor unit charges the trailer battery while in motion, reducing reliance on external charging equipment and saving energy costs.
[0109] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for apparatus or system embodiments, since they are basically similar to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments. The apparatus and system embodiments described above are merely illustrative. Units described as separate components may or may not be physically separate. Components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.
[0110] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.
Claims
1. A force hammer trailer for bridge detection, characterized by, It includes a chassis, a hammer excitation module, a hammer structure, an alarm radar, a control module, and a power module; The chassis has wheels and a tow bar; the tow bar is located in the front area of the chassis, and the wheels are located in the rear area of the chassis. The hammer vibration module, control module, and power module are mounted on the chassis; the hammer vibration module is driven by the hammer structure and can drive the hammer structure to swing up and down; the control module is electrically connected to the power module, the hammer vibration module, and the alarm radar respectively. The control module is located in the front area of the chassis, the hammer excitation module and the power module are located in the rear area of the chassis, and the control module, the hammer excitation module and the power module are arranged in a triangular pattern. The axle of the walking wheel is located below the hammer excitation module and the power module. The hammer structure has a sensor for acquiring vibration signals generated when the target object is struck by the hammer structure, and transmitting them to the control module. The detection area of the alarm radar coincides with the swing area of the hammer structure. When a human body enters the swing area of the hammer structure, the alarm radar can generate a warning signal and transmit it to the control module, so that the control module can control the hammer excitation module to stop driving the hammer structure to swing. The power module is used to supply power to the hammer excitation module, hammer structure, alarm radar and control module.
2. The impulse hammer trailer of claim 1, wherein, The chassis has a frame structure; one end of the tow bar has a ball joint connector and a tow handle; the tow handle is installed above the tow bar via a U-shaped strip; The chassis also has a front wheel, and the tow bar also has a wheel connector, the front wheel being detachably mounted below the tow bar via the wheel connector.
3. The impulse hammer trailer of claim 2, wherein, The wheel connector includes: Mounting plate and mounting strip, wherein the mounting plate and mounting strip are clamped to the radial sides of the traction rod by a screw and nut structure; A vertical mounting rod is installed on the side of the mounting plate; the front wheel is located at the bottom of the mounting rod.
4. The vibratory hammer trailer according to claim 2, characterized in that, The chassis has a pair of tail beams at its rear end; taillights, headlights, the warning radar, and turn signals are mounted on the tail beams; the taillights, headlights, and turn signals are respectively electrically connected to the control module.
5. The vibratory hammer trailer according to claim 2, characterized in that, The chassis has a wheel axle and a pair of shock absorbers at its bottom; the shock absorbers are respectively installed on both sides of the lower part of the chassis, the wheels are respectively movably installed at both ends of the wheel axle, and the shock absorbers are also connected to both sides of the wheel axle.
6. The vibratory hammer trailer according to claim 5, characterized in that, The shock absorber is a leaf spring type suspension shock absorber.
7. The vibratory hammer trailer according to claim 1, characterized in that, The hammer excitation module includes a reducer, a clutch, a motor, a large gear, a small gear, a hammer handle connector, a position switch, and a hammer isolation bracket; the motor, reducer, and hammer isolation bracket are mounted on the chassis; the large gear is movably connected to the chassis via a large gear bracket; the hammer handle is connected to the large gear via the hammer handle connector and can rotate together with the large gear; The hammer is located at one end of the hammer handle; the reducer and the clutch are driven together; the motor is driven together with the pinion via the clutch and reducer, and the large gear meshes with the pinion; the control module is connected to the motor circuit; an encoder is mounted on the large gear bracket, and the encoder is connected to the control module circuit to acquire the tilt angle information of the hammer handle; the control module is used to control the motor to rotate forward, reverse, and stop, and also to send a disengagement / engagement signal to the clutch; the large gear also has a follower protruding shaft; the contact of the position switch is located on the movement path of the protruding shaft, and when the position switch is triggered by the protruding shaft, the position switch can send a motor reverse stop signal to the control module, so that the hammer handle and the hammer stop reversing; the hammer blocking bracket is located on the reversal path of the hammer handle; The power module supplies power to the motor, clutch, and encoder.
8. The vibratory hammer trailer according to claim 7, characterized in that, The hammer structure includes a hammer handle and a hammer. The hammer is mounted on one end of the hammer handle, and the other end of the hammer handle is connected to the drive output end of the hammer excitation module. The hammer handle has a bent portion, and the bending direction of the bent portion is towards the rear side region of the chassis.
9. The vibratory hammer trailer according to claim 8, characterized in that, The hammer includes a hammer body, a hammer head at one end of the hammer body, and a hammer control module at the other end. The hammer body also has a force sensor. The hammer control module is communicatively connected to the force sensor and the control module.
10. The vibratory hammer trailer according to claim 8, characterized in that, It also includes a motor controller and an inverter mounted on the chassis; the inverter is used to convert the DC power output from the power module into AC power, and the motor controller is used to convert the AC power output from the inverter into three-phase power and supply it to the motor.