A lightweight bottom maintenance device for bridge crash barriers
By designing a lightweight bottom maintenance device for bridge crash barriers, operators can clean or paint the bottom of the crash barriers on the bridge deck, solving the problems of safety risks and high equipment costs associated with high-altitude operations, and achieving safe and efficient maintenance results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 郑州市市政设施事务中心
- Filing Date
- 2026-03-30
- Publication Date
- 2026-06-30
Smart Images
Figure CN122304293A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of crash barrier maintenance technology, specifically relating to a lightweight bottom maintenance device for bridge crash barriers. Background Technology
[0002] Bridge crash barriers are reinforced concrete safety structures installed on both sides of bridges to prevent vehicles from running off the bridge deck. Their outer surfaces are constantly exposed to harsh environments such as wind, rain, and exhaust fumes. The base of the crash barrier, especially near the drip edge where it connects to the bridge beams, easily accumulates dust, oil, moss, and other contaminants. Furthermore, the anti-corrosion coating on the surface ages and peels off more quickly due to prolonged water immersion. Therefore, regular cleaning and repainting maintenance of the base of the crash barrier is a crucial maintenance measure to ensure the durability and aesthetic appearance of the bridge structure.
[0003] Currently, the maintenance of the bottom of bridge crash barriers mainly involves using suspended platforms or aerial work platforms to transport operators to the outside of the crash barrier for suspended work. Specifically, operators ride in a suspended platform or climb into the work basket of an aerial work platform to reach the outside of the crash barrier and use cleaning or painting tools to work on the bottom of the crash barrier. This method has many drawbacks: First, operators are suspended at a height for extended periods, posing a risk of fall, especially in strong winds or when the bridge is not completely closed to traffic, further exacerbating the safety risks; second, suspended platforms and aerial work platforms are bulky, cumbersome to transport and install, and incur high equipment rental and labor costs; third, such equipment often occupies the bridge's driving lanes or sidewalks during operation, affecting normal traffic flow, especially on busy urban bridges where the conflict between construction and traffic is particularly prominent. Summary of the Invention
[0004] In view of the defects and problems of existing bridge crash barrier bottom maintenance, the present invention provides a lightweight bridge crash barrier bottom maintenance device. The device has a unique structure and ingenious design, and the operator can operate safely while standing on the bridge deck to achieve cleaning or painting of the entire area of the bottom of the crash barrier and the inner side of the drip edge.
[0005] The solution adopted by this invention to solve its technical problem is: a lightweight bottom maintenance device for bridge crash barriers, comprising: The mounting bracket assembly includes an outer support frame and a mounting part. The mounting part is installed on the top of the outer support frame. The outer support frame is hung on the outside of the crash barrier via the mounting part. A support arm is matched to the bottom of the outer support frame, and a guide sleeve is rotatably installed on the distal end of the support arm. The handheld maintenance mechanism includes a lifting rod and a handheld operating part. The lifting rod is slidably installed vertically within the guide sleeve. The handheld operating part is fixedly installed on the top of the lifting rod and extends to the inside of the crash barrier, for the operator to hold while standing on the bridge inside the crash barrier. The maintenance execution unit includes a mounting frame, a working component, and a drive component. The mounting frame is fixedly mounted on the tail end of the lifting rod, and the working component is rotatably mounted on the end of the mounting frame near the crash barrier for contacting the outer wall surface of the crash barrier to perform maintenance work. The drive component is used to drive the working component to rotate, and the control end of the drive component is mounted on a handheld operating unit. The lifting rod has a vertical sliding degree of freedom and a rotational degree of freedom about the horizontal axis relative to the bracket assembly via the guide sleeve. By lifting and pressing the hand-held operating part, the lifting rod can be driven to slide along the axial direction of the guide sleeve to adjust the working height of the working part. By pushing the hand-held operating part outward, the lifting rod can be driven to rotate the guide sleeve about the horizontal axis to drive the working part to abut against the outer wall surface of the crash barrier.
[0006] The mounting part includes a horizontal bar and a vertical bar. One end of the horizontal bar is connected to the top of the outer support frame, and the other end extends horizontally toward the inside of the crash barrier. The vertical bar is vertically connected to the extension end of the horizontal bar and extends downward, abutting against the inner wall of the crash barrier.
[0007] The vertical rod is provided with multiple adjusting components at vertical intervals. Each adjusting component has a contact seat at one end facing the inner wall of the crash barrier. The adjusting component can extend and retract in the horizontal direction to drive the contact seat to abut against the inner wall of the crash barrier, thereby causing the outer support frame to abut against the outer wall of the crash barrier.
[0008] It also includes a fall protection mechanism, which includes: The receiving box is located below the maintenance execution unit; A mounting assembly is used to mount the receiving box on the outside of the crash barrier, and the receiving box is hinged to the mounting assembly; An elastic component, installed on the receiving box, is used to drive the top of the receiving box to flip towards the anti-collision wall side to a horizontal state; A traction rope, one end of which is connected to the receiving box and the other end extends to the top of the anti-collision wall, is used to pull the receiving box to overcome the elastic force of the elastic component and flip it back to its original position. The receiving box has a receiving port on the top of the end face away from the anti-collision wall. When the receiving box is driven to flip to a horizontal state by the elastic component, the receiving port flips to the bottom of the anti-collision wall.
[0009] The mounting bracket includes: A vertical support is fixedly connected to the lower end of the lifting rod; The horizontal support is hinged to the vertical support via a hinge shaft, the axis of which is set in the horizontal direction; An elastic constraint member, connected between the vertical support and the horizontal support, is used to provide an elastic force that keeps the horizontal support and the vertical support at an initial angle. The working component is rotatably mounted on the end of the horizontal support near the crash barrier.
[0010] It also includes an auxiliary traction component, which includes an elastic traction member. One end of the elastic traction member is connected to the outer support frame, and the other end is connected to the lifting rod. In its natural state, the elastic traction member will pull the lifting rod upward to keep the maintenance execution unit at its initial height.
[0011] The handheld operating unit includes a lifting rod fixedly connected to the top of the lifting rod. The other end of the lifting rod extends toward the inner side of the crash barrier and is fixed with a U-shaped frame. The opening of the U-shaped frame is located away from the lifting rod, and two handles are symmetrically provided at both ends of the opening of the U-shaped frame.
[0012] The working component is a cleaning roller, and the driving component is a drive motor. The cleaning roller is rotatably mounted on the side of the mounting frame near the anti-collision wall, and the roller shaft of the cleaning roller is connected to the driving component for transmission.
[0013] It also includes an image acquisition module, which includes a camera mounted on the maintenance unit for acquiring images of the work area; the camera is connected to a display mounted on a handheld operating unit for displaying the images.
[0014] The working component is a coating roller, which is rotatably mounted on the side of the mounting frame near the crash barrier. The roller shaft of the coating roller is connected to the drive component. The roller shaft of the coating roller is a hollow shaft, and the surface of the coating roller is provided with a discharge hole that communicates with the hollow shaft. The maintenance execution unit also includes a paint supply assembly, which is placed on the bridge and its output end is connected to the hollow shaft through a pipeline.
[0015] The beneficial effects of this invention are as follows: The lightweight bottom maintenance device for bridge crash barriers provided by this invention, through the thickness-adaptive clamping structure of the hanger assembly, enables the device to be stably clamped onto crash barriers of different thicknesses, exhibiting strong versatility; the guide sleeve provides the lifting rod with vertical sliding freedom and rotational freedom around the horizontal axis, allowing operators to control the vertical lifting and lowering of the maintenance execution unit and its rotation inward around the drip edge by pushing and pulling actions while standing on the bridge deck, thereby achieving effective coverage of the entire bottom area of the crash barrier, including the hidden areas inside the drip edge, completely eliminating maintenance blind spots; the maintenance execution unit adopts a cross-hinged structure combined with double-sided pre-stretched elastic elements, forming an elastic adaptive fit between the working part and the wall surface, allowing the operator to rotate the lifting rod... When adjusting the contact pressure between the workpiece and the wall, the horizontal support automatically rotates around the hinge axis and changes the deformation of the elastic element, ensuring that the maintenance execution component does not excessively contact the outer wall surface of the crash barrier. This guarantees the uniformity and effectiveness of cleaning or painting while avoiding damage to the wall surface or overload of the drive component due to excessive pressure. The auxiliary traction component passively stretches and stores energy when the lifting rod descends and assists in traction reset when it is raised, significantly reducing the labor intensity of the operator. The combination of camera and display enables visualization of the operation process, facilitating precise control of the work position and pressure by the operator. The modular design of the workpiece allows for quick replacement of the cleaning roller 432 or the painting roller. Combined with the hollow shaft feeding structure of the painting roller, it realizes the integration of cleaning and painting functions. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.
[0017] Figure 2 This is a schematic diagram of the hanging bracket assembly structure of the present invention.
[0018] Figure 3 This is a schematic diagram of the mounting part structure of the present invention.
[0019] Figure 4 This is a schematic diagram of the anti-fall mechanism of the present invention.
[0020] Figure 5 This is a schematic diagram of the guiding component structure of the present invention.
[0021] Figure 6 This is a schematic diagram of the mounting bracket structure of the present invention.
[0022] Figure 7 This is a schematic diagram of the handheld maintenance mechanism of the present invention in use.
[0023] The diagram labels are as follows: 100 is the hanger assembly, 110 is the outer support frame, 120 is the mounting part, 121 is the horizontal bar, 122 is the vertical bar, 200 is the screw, 210 is the contact seat, and 220 is the screw handle; 300 is the guide assembly, 310 is the support arm, 311 is the shaft hole, 320 is the bushing, 330 is the rotating shaft, 340 is the right-angle connector, 350 is the high-strength spring, 400 is the handheld maintenance mechanism, 410 is the lifting rod, 420 is the handheld operating part, 421 is the lifting rod, and 422 is the U-shaped... The following components are listed: 423 (handle), 430 (maintenance actuator), 431 (mounting bracket), 432 (cleaning roller), 434 (vertical support), 435 (horizontal support), 436 (hinged shaft a), 437 (first elastic element), 438 (second elastic element), 500 (elastic traction element), 600 (fall prevention mechanism), 610 (receiving box), 621 (lifting rod), 630 (elastic component), 640 (traction rope), 650 (hinged shaft), 660 (stop bar), 670 (guide rod), 700 (anti-collision wall), and 710 (drip edge). Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example
[0025] like Figure 1 As shown in the figure, the lightweight bottom maintenance device for bridge crash barriers provided in this embodiment of the invention mainly includes a bracket assembly 100, a guide assembly 300, and a handheld maintenance mechanism 400.
[0026] The mounting bracket assembly 100 is used to mount the entire device on the outside of the crash barrier. In this embodiment, the mounting bracket assembly 100 specifically includes an outer support frame 110 and a mounting part 120. The mounting part 120 is installed on the top of the outer support frame 110, and the outer support frame 110 is mounted on the outer wall of the crash barrier through the mounting part 120. The mounting part 120 includes a horizontal bar 121 and a vertical bar 122. One end of the horizontal bar 121 is welded to the top of the outer support frame 110, and the other end extends horizontally toward the inside of the crash barrier. The vertical bar 122 is vertically welded to the extension end of the horizontal bar 121 and extends downward.
[0027] To achieve thickness-adaptive clamping, multiple adjusting components are installed at vertical intervals along the vertical rod 122. In this embodiment, the adjusting components are specifically screws 200. Each screw 200 has a contact seat 210 installed at the end facing the inner wall of the crash barrier. By turning the screw 200, the horizontal distance between the contact seat 210 and the vertical rod 122 can be adjusted, causing the contact seat 210 to abut against the inner wall of the crash barrier. When the contact seat 210 is pressed against the inner wall, the outer support frame 110 abuts tightly against the outer wall of the crash barrier under the reaction force, thereby making the entire bracket assembly... The screw 200 can be firmly clamped onto crash barriers of varying thicknesses. Furthermore, a screw 200 is fitted with a turning handle 220 at the end furthest from the inner wall of the crash barrier for turning the screw 200. Even further, the contact seat 210 is an existing universal foot, whose base can automatically adjust according to the angle of the inner wall of the crash barrier during use, ensuring it fits snugly against the inner wall. This screw adjustment structure is not only simple in structure and easy to operate, but also provides a stable and reliable clamping force, ensuring that the entire device will not shake or shift during operation.
[0028] like Figure 5 As shown, the guide assembly 300 is installed at the bottom of the outer support frame 110 of the hanger assembly 100 to provide initial guidance for the sliding path of the subsequent lifting rod. The guide assembly 300 includes a support arm 310 and a bushing 320 as a guide. The proximal end of the support arm 310 is fixedly connected to the bottom of the outer support frame 110, and its distal end extends away from the crash barrier. The bushing 320 is rotatably installed at the distal end of the support arm 310 via a rotating shaft 330, the axis of which is set in the horizontal direction. Specifically, the distal end of the support arm 310 is provided with a shaft hole 311 in the transverse direction, and the outer wall of the bushing 320 is fixedly provided with a rotating shaft 330 in the radial direction. The rotating shaft 330 is rotatably installed in the shaft hole 311, thereby enabling the bushing 320 to rotate around the axis of the rotating shaft 330.
[0029] Furthermore, a support arm 310 extends outward from the end of the rotating shaft away from the bushing 320 and is equipped with a rotation constraint assembly. The rotation constraint assembly includes a right-angle connector 340 fixedly mounted on the rotating shaft 330. The other end of the right-angle connector is set vertically toward the outer support frame 110 and is fixedly mounted with a strong spring. The other end of the strong spring is fixedly connected to the outer support frame 110. In its natural state, the strong spring controls Zhou Tao to maintain its initial vertical state.
[0030] The handheld maintenance mechanism 400 includes a lifting rod 410, a handheld operating part 420, and a maintenance execution part 430. The lifting rod 410 is slidably fitted into the bushing 320 along the vertical direction, that is, the lifting rod 410 can slide up and down within the bushing 320. In this embodiment, the lifting rod 410 can be a square rod, and the bushing 320 is a square sleeve that matches the lifting rod 410. At the same time, since the bushing 320 can rotate around the pivot 330, the lifting rod 410 rotates together with the bushing 320, so that the lifting rod 410 as a whole has a vertical sliding degree of freedom and a rotational degree of freedom around the horizontal axis relative to the bracket assembly 100.
[0031] The handheld operating unit 420 is connected to the upper end of the lifting rod 410 and is used by the operator to hold and drive the lifting rod 410 to slide and rotate. In this embodiment, the handheld operating unit 420 includes a lifting rod 421, a U-shaped frame 422 and two handles 423. The lifting rod 421 is fixedly connected to the top end of the lifting rod 410 and extends horizontally towards the inside of the anti-collision wall. In this embodiment, the lifting rod and the lifting rod can adopt an integrated structure, forming different parts by bending. The U-shaped frame 422 is fixedly connected to the extension end of the lifting rod 421, and the open end of the U-shaped frame 422 is set away from the lifting rod. The two handles 423 are symmetrically arranged at both ends of the U-shaped frame 422. This symmetrical grip structure, similar to bicycle handlebars, conforms to ergonomic design, making it easy for the operator to apply force stably. It can easily lift or press the lifting rod 410 upwards or downwards, and can also make the lifting rod 410 rotate around the pivot 330 through pushing and pulling actions. Moreover, the left and right hands can work together to apply force, making the operation more labor-saving and precise.
[0032] The maintenance execution unit 430 is connected to the lower end of the lifting boom 410 and is used to perform maintenance work on the bottom of the crash barrier; such as Figure 6 As shown, the maintenance execution unit 430 includes a mounting frame 431, a working component, and a driving component; wherein, the working component may be a cleaning roller 432 or a coating roller, and the driving component is a drive motor, which is connected to the roller shaft of the working component for driving the working component to rotate.
[0033] Mounting bracket 431 is connected to the lower end of lifting rod 410 via an elastic hinge structure. Specifically, mounting bracket 431 includes a vertical bracket 434 and a horizontal bracket 435. The vertical bracket 434 is fixedly connected to the lower end of lifting rod 410. The horizontal bracket 435 is hinged to the vertical bracket 434 along a cross direction via hinge shaft a436. The axis of hinge shaft a436 is set horizontally in the transverse direction. An elastic constraint component is installed at the end of the horizontal bracket 435 away from the anti-collision wall to constrain the vertical bracket 434 and the horizontal bracket 435 to maintain an initial included angle. In this embodiment, the initial included angle is preferably 90 degrees.
[0034] The elastic constraint assembly includes a first elastic element 437 and a second elastic element 438 connected to the upper and lower sides of the horizontal support 435 and the vertical support 434, respectively. Both the first elastic element 437 and the second elastic element 438 are tension springs or elastic ropes, and both are in a pre-stretched state under natural conditions, i.e., in a semi-stretched state. This symmetrically arranged elastic constraint structure on both sides can ensure that the horizontal support 435 has a stable restoring torque when subjected to external force. When the workpiece contacts the wall, if the contact pressure is too high, the horizontal support can overcome the elastic constraint force and rotate around the hinge axis, thereby buffering the impact and automatically adjusting the contact pressure. When the external force disappears, under the combined action of the elastic elements on both sides, the horizontal support 435 can smoothly return to the initial included angle.
[0035] The working component is rotatably mounted on one end of the horizontal support 435 near the anti-collision wall. In this embodiment, the working component is located above the horizontal support 435. The driving component is fixedly mounted on the mounting bracket 431 and is connected to the working component in a transmission manner. The control end of the driving component can be set on the handheld operating part 420, for example, integrated near the handle 423, so that the operator can control the opening and closing and the rotation speed of the driving component at any time.
[0036] During operation, first adjust the position of the contact seat 210 by turning the screw 200 according to the thickness of the crash barrier, so that the hanger assembly 100 is firmly clamped on the crash barrier. At this time, the entire device is stably in place. The operator stands on the bridge deck inside the crash barrier and holds the two handles 423 of the handheld operating part 420 with both hands.
[0037] When cleaning of the bottom of the crash barrier is required, the operator presses down on the hand-held operating unit 420, causing the lifting rod 410 to slide down along the bushing 320, and the maintenance actuator 430 descends accordingly. During this process, the auxiliary traction component can provide auxiliary support.
[0038] like Figure 2 As shown, the auxiliary traction assembly includes an elastic traction element 500. In this embodiment, the elastic traction element 500 is an elastic rope. One end of the elastic traction element 500 is fixedly connected to the bracket assembly 100, and the other end is fixedly connected to the lifting rod 410. In its natural state, the elastic traction element 500 pulls the lifting rod 410 upward, keeping the maintenance actuator 430 at its initial height. When the operator presses down, the lifting rod 410 descends and pulls the elastic traction element 500, causing it to be passively stretched and storing elastic potential energy. When lifting is required, the contraction force of the elastic traction element 500 can assist the operator in lifting the lifting rod 410 upward, significantly reducing the operating load.
[0039] When the maintenance execution unit 430 descends to the bottom of the crash barrier, the workpiece begins to contact the outer wall surface of the crash barrier. The operator activates the drive unit, and the workpiece rotates to begin cleaning or painting the wall surface. During this process, because the mounting bracket 431 adopts an elastic hinge structure, if the contact pressure is insufficient when the workpiece contacts the wall surface, the operator can push the handheld operation unit 420 outward (i.e., away from the crash barrier). At this time, the lifting rod 410 rotates around the pivot 330, driving the maintenance execution unit 430 to move towards the crash barrier side, making the workpiece fit more tightly against the wall surface. When the contact pressure between the workpiece and the wall surface is too great, the horizontal support 435 will overcome the elastic force of the elastic constraint component and rotate upward or downward around the hinge axis a436. The elastic force of the elastic constraint component is used to automatically adjust the contact pressure between the workpiece and the wall surface to achieve constant force adhesion, which not only ensures the cleaning effect but also avoids damage to the wall coating or overload of the drive unit due to excessive pressure.
[0040] When the workpiece descends along the outer wall of the crash barrier to the bottom drip edge, conventional vertical lifting structures cannot reach the area near the bridge beam on the inner side of the drip edge because the drip edge protrudes outward. However, in this device, the operator only needs to continue pushing the handheld operating part 420 outward to drive the lifting rod 410 to rotate further around the rotating shaft 330. This allows the horizontal support 435 to move the workpiece along the outer wall of the drip edge inward, thereby cleaning or painting the outer surface of the drip edge near the bridge beam and completely eliminating maintenance dead spots. Example
[0041] The difference between Embodiment 2 and Embodiment 1 is that Embodiment 2 also includes an image acquisition module. The image acquisition module includes a camera and a display. The camera is mounted on a vertical support with its lens facing the working area of the workpiece to acquire images of the working area in real time. The display is mounted on the handheld operating unit 420, specifically in the middle of the U-shaped frame 422 or near the handle 423. It is connected to the camera via wired or wireless means to display the images acquired by the camera in real time. With this setup, the operator can clearly observe the working situation at the bottom from the bridge deck without having to bend down to look, further improving the convenience and safety of operation. Example
[0042] The difference between Example 3 and Example 2 is that the working component of the maintenance execution unit 430 can be replaced with a coating roller to achieve the coating function. Specifically, the coating roller is rotatably mounted on the side of the mounting frame near the crash barrier. The roller shaft of the coating roller is connected to the drive unit. The roller shaft is a hollow shaft, and the surface of the coating roller has multiple discharge holes communicating with the hollow shaft. The paint supply assembly is placed on the bridge deck, and its output end is connected to the hollow shaft through a supply pipe. The supply pipe and the hollow shaft are connected by a rotary joint to ensure that the paint can be continuously supplied during the rotation of the coating roller. During operation, the drive unit is started and the paint supply assembly is turned on. The paint enters the hollow shaft through the supply pipe and is then evenly coated onto the surface of the crash barrier through the discharge holes. This structure integrates cleaning and coating functions, further expanding the application range of the device. Example
[0043] The difference between Example 4 and Example 3 is that, as Figure 1 and Figure 4 As shown, it also includes an anti-fall mechanism 600, which includes a receiving box 610, a mounting assembly, an elastic component 630, and a traction rope 640. The receiving box 610 is mounted on the outside of the crash barrier via the mounting assembly and is located below the maintenance execution unit 430. The receiving box 610 and the mounting assembly are hinged together via a hinge shaft 650, allowing the receiving box 610 to rotate up and down around the hinge shaft 650. The mounting assembly includes hanging rods symmetrically arranged on the left and right sides of the receiving box 610. The bottom end of the hanging rod is rotatably mounted to the receiving box 610 on the same side via a hinge shaft. The top of the hanging rod has a mounting part with the same structure as the hanging frame and is mounted on the crash barrier via the mounting part. The top of the end face of the receiving box 610 away from the crash barrier has a receiving port 611.
[0044] The elastic component 630 is fitted onto the receiving box 610. In this embodiment, the elastic component 630 is a torsion spring. A stop bar 660 is provided at intervals on the side of the mounting assembly away from the crash barrier. The stop bar is fixedly connected to the mounting assembly. In its natural state, the elastic component 630 will drive the top of the receiving box 610 to flip downwards toward the crash barrier, so that the bottom of the receiving box abuts against the stop bar and remains in a horizontal state. At this time, the receiving port 611 flips to the bottom of the crash barrier and is located directly below the working area of the maintenance execution unit 430. When the maintenance execution unit 430 performs cleaning or painting operations, the generated debris, sewage or dripping paint can fall directly into the receiving box 610, preventing the falling objects from scattering into the environment under the bridge or polluting other parts of the bridge.
[0045] One end of the traction rope 640 is connected to the side of the receiving box 610 near the receiving port 611. The other end of the traction rope 640 extends upward along the outside of the crash barrier to the top of the crash barrier, and can further extend to the inside of the crash barrier for the operator to hold. When the receiving box 610 needs to be disassembled for cleaning, the operator pulls the traction rope 640 upward. The traction rope 640 drives the receiving box 610 to rotate upward around the hinge shaft 650, overcoming the elastic force of the elastic component 630, so that the receiving box 610 rotates to a vertical position (i.e., with the outside of the crash barrier). During this process, it falls into the receiving box. The falling material inside 610 will automatically slide to the bottom of the receiving box 610, preventing the falling material from scattering when the receiving box 610 is lifted; the receiving box, which is flipped to the vertical position, is no longer located directly below the bottom of the crash barrier. The operator can easily lift the hanging component upwards to remove the entire anti-fall mechanism 600 from the crash barrier. During the removal process, the receiving box 610 will not interfere with the bottom of the crash barrier. After the traction rope 640 is released, under the elastic force of the elastic component 630, the receiving box 610 will automatically return to the horizontal receiving state and re-enter the projection area at the bottom of the crash barrier.
[0046] Furthermore, a guide rope rod is provided horizontally between the two lifting rods of the hanging assembly above the receiving box. The other end of the traction rope 640 is guided upward through the guide rope rod and extends upward along the outside of the crash barrier to the top of the crash barrier.
[0047] It should be noted that the above embodiments and accompanying drawings are merely illustrative examples of the core principles and key structures of the "Lightweight Bottom Maintenance Device for Bridge Anti-collision Wall" of this invention. The accompanying drawings are simplified schematic diagrams, intended to clearly illustrate the structural, process, or data flow relationships related to the innovative points of the technical solution, and are not intended to limit the complete form of the actual product. This specification focuses on the innovative technical means necessary to achieve the invention's objectives and solve the technical problems. While auxiliary or common-sense details such as "rust prevention treatment," "sealing design," "wire wiring," and "standard fastener selection," which can be implemented without creative effort by those skilled in the art, are not elaborated upon, they should be understood as naturally included in the specific implementation of this invention and fall within the protection and implementation scope of this technical solution.
Claims
1. A lightweight bottom maintenance device for bridge crash barriers, characterized in that, include: The mounting bracket assembly includes an outer support frame and a mounting part. The mounting part is installed on the top of the outer support frame. The outer support frame is hung on the outside of the crash barrier via the mounting part. A support arm is matched to the bottom of the outer support frame, and a guide sleeve is rotatably installed on the distal end of the support arm. The handheld maintenance mechanism includes a lifting rod and a handheld operating part. The lifting rod is slidably installed vertically within the guide sleeve. The handheld operating part is fixedly installed on the top of the lifting rod and extends to the inside of the crash barrier, for the operator to hold while standing on the bridge inside the crash barrier. The maintenance execution unit includes a mounting frame, a working component, and a drive component. The mounting frame is fixedly mounted on the tail end of the lifting rod, and the working component is rotatably mounted on the end of the mounting frame near the crash barrier for contacting the outer wall surface of the crash barrier to perform maintenance work. The drive component is used to drive the working component to rotate, and the control end of the drive component is mounted on a handheld operating unit. The lifting rod has a vertical sliding degree of freedom and a rotational degree of freedom about the horizontal axis relative to the bracket assembly via the guide sleeve. By lifting and pressing the hand-held operating part, the lifting rod can be driven to slide along the axial direction of the guide sleeve to adjust the working height of the working part. By pushing the hand-held operating part outward, the lifting rod can be driven to rotate the guide sleeve about the horizontal axis to drive the working part to abut against the outer wall surface of the crash barrier.
2. The lightweight bottom maintenance device for bridge crash barriers according to claim 1, characterized in that, The mounting part includes a horizontal bar and a vertical bar. One end of the horizontal bar is connected to the top of the outer support frame, and the other end extends horizontally toward the inside of the crash barrier. The vertical bar is vertically connected to the extension end of the horizontal bar and extends downward, abutting against the inner wall of the crash barrier.
3. The lightweight bottom maintenance device for bridge crash barriers according to claim 2, characterized in that, The vertical rod is provided with multiple adjusting components at vertical intervals. Each adjusting component has a contact seat at one end facing the inner wall of the crash barrier. The adjusting component can extend and retract in the horizontal direction to drive the contact seat to abut against the inner wall of the crash barrier, thereby causing the outer support frame to abut against the outer wall of the crash barrier.
4. The lightweight bottom maintenance device for bridge crash barriers according to claim 1, characterized in that, It also includes a fall protection mechanism, which includes: The receiving box is located below the maintenance execution unit; A mounting assembly is used to mount the receiving box on the outside of the crash barrier, and the receiving box is hinged to the mounting assembly; An elastic component, installed on the receiving box, is used to drive the top of the receiving box to flip towards the anti-collision wall side to a horizontal state; A traction rope, one end of which is connected to the receiving box and the other end extends to the top of the anti-collision wall, is used to pull the receiving box to overcome the elastic force of the elastic component and flip it back to its original position. The receiving box has a receiving port on the top of the end face away from the anti-collision wall. When the receiving box is driven to flip to a horizontal state by the elastic component, the receiving port flips to the bottom of the anti-collision wall.
5. The lightweight bottom maintenance device for bridge crash barriers according to claim 1, characterized in that, The mounting bracket includes: A vertical support is fixedly connected to the lower end of the lifting rod; The horizontal support is hinged to the vertical support via a hinge shaft, the axis of which is set in the horizontal direction; An elastic constraint member, connected between the vertical support and the horizontal support, is used to provide an elastic force that keeps the horizontal support and the vertical support at an initial angle. The working component is rotatably mounted on the end of the horizontal support near the crash barrier.
6. The lightweight bottom maintenance device for bridge crash barriers according to claim 1, characterized in that, It also includes an auxiliary traction component, which includes an elastic traction member. One end of the elastic traction member is connected to the outer support frame, and the other end is connected to the lifting rod. In its natural state, the elastic traction member will pull the lifting rod upward to keep the maintenance execution unit at its initial height.
7. The lightweight bottom maintenance device for bridge crash barriers according to claim 1, characterized in that, The handheld operating unit includes a lifting rod fixedly connected to the top of the lifting rod. The other end of the lifting rod extends toward the inner side of the crash barrier and is fixed with a U-shaped frame. The opening of the U-shaped frame is located away from the lifting rod, and two handles are symmetrically provided at both ends of the opening of the U-shaped frame.
8. The lightweight bottom maintenance device for bridge crash barriers according to claim 1, characterized in that, The working component is a cleaning roller, and the driving component is a drive motor. The cleaning roller is rotatably mounted on the side of the mounting frame near the anti-collision wall, and the roller shaft of the cleaning roller is connected to the driving component for transmission.
9. The lightweight bottom maintenance device for bridge crash barriers according to claim 1, characterized in that, It also includes an image acquisition module, which includes a camera mounted on the maintenance unit for acquiring images of the work area; the camera is connected to a display mounted on a handheld operating unit for displaying the images.
10. The lightweight bottom maintenance device for bridge crash barriers according to claim 1, characterized in that, The working component is a coating roller, which is rotatably mounted on the side of the mounting frame near the crash barrier. The roller shaft of the coating roller is connected to the drive component. The roller shaft of the coating roller is a hollow shaft, and the surface of the coating roller is provided with a discharge hole that communicates with the hollow shaft. The maintenance execution unit also includes a paint supply assembly, which is placed on the bridge and its output end is connected to the hollow shaft through a pipeline.