A self-propelled rust removal device for steel bridge

Abstract

The present application relates to bridge construction equipment technical field, specifically to a kind of self-propelled derusting device for steel bridge, including the upper transverse support of erection in the upper of bridge steel box, the driving mechanism for driving it is equipped with in the upper of steel box below upper transverse support, upper transverse support both ends extend outside steel box, and are respectively connected with vertical frame downwards, and the horizontal installation sliding support of each vertical frame bottom end is connected, sliding support is provided in the retractable platform, retractable platform is slidably installed by pulley, and two retractable platforms are detachably connected;The present application adopts modular design, and it is easy to assemble, disassemble, and material can be used repeatedly, reduce use cost;The present application provides the simultaneous operation space of upper and lower sides, and structure is compared to traditional full-tent support, and work is more efficient, simple and convenient;The present application designs separable retractable platform, and both ends are provided with limit, prevent slipping, and can be flexibly avoided bridge.

Description

Technical Field

[0001] This invention relates to the field of bridge construction equipment technology, and specifically to a self-propelled rust removal device for steel bridges. Background Technology

[0002] When erecting steel bridges, steel boxes are first placed on the piers. These boxes can rust due to friction during transportation and installation, or environmental factors. They need to be derusted and then re-coated with anti-corrosion paint for repair. However, the underside of the steel boxes is difficult to access. The traditional method is to use a full-span scaffold, but this takes a long time, consumes a lot of manpower and resources, and requires repeated hoisting of equipment and personnel, which also poses safety risks. In addition, during the rust removal process on the bridge deck, mobile sandblasting machines are used, but they need to be pushed manually and their direction of movement controlled. They often need to be adjusted repeatedly to move to the designated position. Moreover, most sandblasting machines do not have locking devices at the bottom. On windy days, workers need to manually use bricks and wooden blocks to stop the wheels, otherwise they can easily move under external forces, posing a certain safety risk. Summary of the Invention

[0003] The purpose of this invention is to address the deficiencies and shortcomings of existing technologies by providing a reasonably designed self-propelled rust removal device for steel bridges, which can solve the aforementioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions:

[0005] A self-propelled rust removal device for steel bridges includes an upper transverse support erected above the steel box of the bridge. A drive mechanism is located below the upper transverse support to move it above the steel box. Both ends of the upper transverse support extend outside the steel box and are connected downwards to vertical supports. Each vertical support has a horizontally installed sliding support at its bottom end. The two sliding supports face each other. Each sliding support is a square frame with a square slide rail on its inner side. Multiple sets of pulleys are provided on the upper and lower sides of the slide rail, and a square telescopic platform is installed within the slide rail. The telescopic platforms are slidably installed via pulleys. The two telescopic platforms are detachably connected, and each telescopic platform has a floor installed on its bottom surface as a work platform for personnel. Multiple movable frames are also located below the upper transverse support, each containing a sandblasting machine.

[0006] Preferably, a guide rail is provided horizontally below the upper transverse support, the movable frame includes a frame body, the top of the frame body is slidably mounted on the guide rail via sliding wheels, the bottom of the frame body is connected to a base plate, the sandblasting machine is mounted on the base plate, and a guardrail is provided around the frame body to prevent the sandblasting machine from sliding out, and positioning structures are provided on the left and right sides of the bottom of the frame body respectively.

[0007] Preferably, the positioning structure includes a limiting block rotatably connected to the side of the frame via a rotating shaft. The limiting block is triangular in shape, and a number of positioning spikes inclined outward are provided on the bottom surface of the limiting block. A magnet is embedded on the inclined surface of the limiting block. When the limiting block is rotated upward, the surface on the limiting block where the magnet is installed gradually approaches the frame until the magnet is attracted to the frame.

[0008] Preferably, the driving mechanism includes two triangular drive support frames connected to the lower part of the upper transverse support. The two triangular drive support frames are symmetrically arranged on the left and right. Each triangular drive support frame has a drive wheel set driven by a motor installed on the front and rear sides of its bottom. The direction of the wheel in the drive wheel set is perpendicular to the setting direction of the upper transverse support.

[0009] Preferably, both ends of the upper transverse support have channels for the vertical frame to pass through. After the vertical frame passes through the channel, its top end is connected to a frame connector, which is then bolted to the upper transverse support.

[0010] Preferably, multiple positioning flanges are connected to one end of each of the two telescopic platforms. The two telescopic platforms are detachably connected to each other via positioning bolts. After the positioning flanges are installed at the ends of the telescopic platforms, the longitudinal dimension of the ends is larger than the dimension of the slide rail. A transverse protective frame is connected to the outer end of the telescopic platforms, and the dimension of the transverse protective frame is larger than the dimension of the slide rail.

[0011] Preferably, the upper and lower sides of the sliding bracket and the telescopic platform are respectively provided with multiple sets of positioning holes. When the two telescopic platforms slide inward to fit together, the positioning holes of the sliding bracket are opposite to some of the positioning holes of the telescopic platform, and positioning pins are inserted into the opposite positioning holes to position the two. When the two telescopic platforms slide outward to separate, the positioning holes of the sliding bracket and the telescopic platform are also positioned by positioning pins and positioning holes.

[0012] Preferably, each of the vertical frames is connected to a lateral limiting frame on its inner side, and the front end of the lateral limiting frame is connected to a lower driven moving wheel assembly.

[0013] Preferably, the bottom end of the vertical bracket and the upper side of the sliding bracket are respectively provided with multiple connecting flanges, and the two are connected by bolts through the connecting flanges.

[0014] Preferably, the limiting block has a handle on its side.

[0015] The beneficial effects of the present invention after adopting the above structure are:

[0016] This invention designs a movable frame that can slide laterally to hoist the sandblasting machine, allowing the machine to move laterally along the top of the steel box for rust removal. The movement direction is stable and is limited to ensure safe use. Furthermore, a positioning structure is designed to prevent the movable frame from slipping due to external forces, thus improving safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the usage method of the present invention;

[0018] Figure 2 This is a side view of the present invention;

[0019] Figure 3 yes Figure 1 Enlarged view of section A;

[0020] Figure 4 yes Figure 1 Enlarged view of section B;

[0021] Figure 5 yes Figure 1 Enlarged view of section C;

[0022] Figure 6 yes Figure 1 Enlarged view of section D in the middle;

[0023] Figure 7 yes Figure 1 Enlarged view of section E in the middle;

[0024] Figure 8 This is a schematic diagram of the structure of the present invention when it crosses a bridge;

[0025] Figure 9 yes Figure 1 Enlarged view of section F in the middle;

[0026] Figure 10 yes Figure 9 Enlarged view of section G in the middle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Upper transverse support; 101. Triangular drive support frame; 102. Motor; 103. Drive wheel set; 2. Vertical frame; 3. Sliding support; 301. Pulley; 4. Telescopic platform; 401. Transverse protective frame; 402. Positioning flange; 403. Positioning pin; 404. Positioning bolt; 5. Transverse limit frame; 6. Lower driven moving wheel assembly; 7. Frame connecting parts; 8. Connecting flange; 9. Guide slide rail; 10. Sliding wheel; 11. Frame; 12. Base plate; 13. Sandblasting machine; 14. Limit block; 15. Rotating shaft; 16. Magnet block; 17. Handle; 18. Positioning spike. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] See Figures 1-10 As shown, the structure includes an upper transverse support 1 erected above the steel box of the bridge. A drive mechanism is located below the upper transverse support 1 to move it above the steel box. Both ends of the upper transverse support 1 extend outside the steel box and are connected downwards to vertical supports 2. A transverse limiting frame 5 is connected to the inner side of each vertical support 2, and a lower driven moving wheel assembly 6 is connected to the front end of each transverse limiting frame 5. Multiple connecting flanges 8 are located at the bottom of the vertical supports 2 and on the upper side of the sliding supports 3, and the two are connected by bolts via the connecting flanges 8. A horizontally installed sliding support 3 is connected to the bottom of each vertical support 2, with the two sliding supports 3 facing each other. The sliding supports 3 are square frames. The inner side forms a square slide, and multiple sets of pulleys 301 are provided on the upper and lower sides of the slide. A square telescopic platform 4 is installed in the slide. The telescopic platform 4 is slidably installed through the pulleys 301. Two telescopic platforms 4 can be detachably connected, and the bottom surface of each telescopic platform 4 is equipped with a floor to serve as a work platform for personnel. Multiple movable frames are also provided below the upper horizontal support 1. Each movable frame is equipped with a sandblasting machine 13. The sandblasting machine 13 is a movable and automatically recoverable sandblasting machine 13. The upper horizontal support 1, vertical frame 2, sliding support 3, telescopic platform 4, horizontal limit frame 5, frame body 11, and triangular drive support frame 101 are all made of square tubes.

[0031] The upper horizontal support 1 is provided with a guide rail 9 below it. The movable frame includes a frame body 11. The top of the frame body 11 is slidably installed on the guide rail 9 via a sliding wheel 10. The bottom of the frame body 11 is connected to a base plate 12. The sandblasting machine 13 is placed on the base plate 12. The frame body 11 is surrounded by guardrails to prevent the sandblasting machine 13 from sliding out. The bottom left and right sides of the frame body 11 are respectively provided with positioning structures to prevent it from sliding accidentally.

[0032] The positioning structure includes a limiting block 14 rotatably connected to the side of the frame 11 via a rotating shaft 15. The limiting block 14 is triangular in shape, and a number of positioning spikes 18 inclined outward are provided on the bottom surface of the limiting block 14. A magnet 16 is embedded on the inclined surface of the limiting block 14. When the limiting block 14 is rotated upward, the surface on the limiting block 14 where the magnet 16 is installed gradually approaches the frame 11 until the magnet 16 is attracted to the frame 11. A handle 17 is provided on the side of the limiting block 14 for easy operation.

[0033] The drive mechanism includes two triangular drive support frames 101 connected to the lower part of the upper transverse support 1. The two triangular drive support frames 101 are arranged symmetrically on the left and right. Each triangular drive support frame 101 has a drive wheel set 103 driven by a motor 102 installed on the front and rear sides of its bottom. The direction of the wheel in the drive wheel set 103 is perpendicular to the direction of the upper transverse support 1.

[0034] Both ends of the upper horizontal support 1 have channels for the vertical frame 2 to pass through. After the vertical frame 2 passes through the channel, the top end is connected to the frame connector 7, which is then connected to the upper horizontal support 1 by bolts.

[0035] Multiple positioning flanges 402 are connected to one end of each of the two telescopic platforms 4. The two telescopic platforms 4 are detachably connected to each other via positioning bolts 404. After the positioning flanges 402 are installed at the ends of the telescopic platforms 4, the longitudinal dimension of the end is larger than the dimension of the slide rail. A transverse protective frame 401 is connected to the outer end of the telescopic platform 4. The dimension of the transverse protective frame 401 is larger than the dimension of the slide rail.

[0036] Multiple sets of positioning holes are opened on the upper and lower sides of the sliding bracket 3 and the telescopic platform 4 respectively. When the two telescopic platforms 4 slide inward to fit together, the positioning holes of the sliding bracket 3 are aligned with some of the positioning holes of the telescopic platform 4, and the positioning pins 403 are inserted into the aligned positioning holes to position them. When the two telescopic platforms 4 slide outward to separate, the positioning holes of the sliding bracket 3 and the telescopic platform 4 are also positioned by the positioning pins 403 and the positioning holes.

[0037] When constructing this invention, guide rails 9, movable frames, triangular drive support frames 101, and drive wheel sets 103 are installed below the upper transverse support 1. Since there are two sets of drive wheel sets 103 below each triangular drive support frame 101, the upper transverse support 1 can provide certain support on its own after being hoisted onto the bridge deck, and will not tilt forward or backward. After assembling and positioning the sliding support 3 and telescopic platform 4 on the ground, they are connected to the vertical frame 2. The two assembled structures are hoisted and installed at both ends of the upper transverse support 1. Then, the positioning flanges 402 of the two telescopic platforms 4 are connected to complete the main body installation. Then, the sandblasting machine 13 can be installed in the movable frame, and guardrails can be installed. Multiple sandblasting machines 13 can be hoisted onto the telescopic platform 4 for personnel use.

[0038] During operation, on one hand, above the steel box, the worker lifts the limiting block 14 upwards using handle 17, and the magnetic block 16 automatically attracts and fixes it. After fixing the limiting blocks 14 on both sides upwards, the movable frame can be pushed to slide along the guide rail 9. After reaching the designated position, the limiting block 14 can be pressed down to separate the magnetic block 16 from the frame 11. The positioning spike 18 contacts the surface of the steel box for positioning, preventing slippage and danger under external force. Then, the sandblasting machine 13 can be operated to start working. After the rust removal of the area is completed, the above operation is repeated, the position of the sandblasting machine 13 is changed, and the work of the next position is continued.

[0039] On the other hand, below the steel box, workers and equipment are on the telescopic platform 4, operating from above, and using the sandblasting machine 13 to remove rust from the lower side of the steel box.

[0040] After the upper and lower sides of the steel box at the location of the device are treated, the motor 102 is started and the device is driven to move forward along the bridge front through the drive wheel set 103. Then the rust removal operation is started again. By repeating the above operation, the rust removal along the direction of the steel box can be achieved.

[0041] When encountering a bridge pier, the connection between the two telescopic platforms 4 can be separated, the positioning pin 403 can be removed, and the telescopic platforms 4 can be moved to both sides respectively to achieve... Figure 8 As shown in the diagram, the device can then move forward to cross the bridge. After that, it can retract the telescopic platform 4 inward and connect and position the two telescopic platforms 4.

[0042] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A self-propelled rust removal device for steel bridges, comprising an upper transverse support (1) erected above the steel box girder of the bridge, characterized in that: Below the upper horizontal support (1) is a drive mechanism for moving it above the steel box. The two ends of the upper horizontal support (1) extend out of the steel box and are connected to the vertical brackets (2) respectively. The bottom of each vertical bracket (2) is connected to a horizontally installed sliding bracket (3). The two sliding brackets (3) are opposite to each other. The sliding bracket (3) is a square frame with a square slide inside. Multiple sets of pulleys (301) are provided on the upper and lower sides of the slide. A square telescopic platform (4) is provided in the slide. The telescopic platform (4) is slidably installed through the pulleys (301). The two telescopic platforms (4) are detachably connected. The bottom surface of the telescopic platform (4) is equipped with a floor to serve as a work platform for personnel. Below the upper horizontal support (1) are multiple movable frames. Each movable frame is equipped with a sandblasting machine (13). The upper horizontal support (1) is provided with a guide rail (9) below it. The movable frame includes a frame (11). The top of the frame (11) is slidably installed on the guide rail (9) via a sliding wheel (10). The bottom of the frame (11) is connected to a base plate (12). The sandblasting machine (13) is placed on the base plate (12). The frame (11) is surrounded by guardrails to prevent the sandblasting machine (13) from sliding out. The bottom left and right sides of the frame (11) are respectively provided with positioning structures. The positioning structure includes a limiting block (14) rotatably connected to the side of the frame (11) via a rotating shaft (15). The limiting block (14) is triangular in shape, and a number of positioning spikes (18) inclined outward are provided on the bottom surface of the limiting block (14). A magnet (16) is embedded on the inclined surface of the limiting block (14). When the limiting block (14) is rotated upward, the surface on the limiting block (14) where the magnet (16) is installed gradually approaches the frame (11) until the magnet (16) is attracted to the frame (11). The drive mechanism includes two triangular drive support frames (101) connected to the lower part of the upper transverse support (1). The two triangular drive support frames (101) are symmetrically arranged on the left and right. Each triangular drive support frame (101) has a drive wheel set (103) driven by a motor (102) installed on the front and rear sides of the bottom of the bottom. The direction of the wheel in the drive wheel set (103) is perpendicular to the setting direction of the upper transverse support (1). The inner side of each vertical frame (2) is connected to a transverse limiting frame (5), and the front end of the transverse limiting frame (5) is connected to a lower driven moving wheel assembly (6).

2. The self-propelled rust removal device for steel bridges according to claim 1, characterized in that: Both ends of the upper transverse support (1) have channels for the vertical frame (2) to pass through. After the vertical frame (2) passes through the channel, the top end is connected to the frame connector (7), which is then connected to the upper transverse support (1) by bolts.

3. The self-propelled rust removal device for steel bridges according to claim 1, characterized in that: Multiple positioning flanges (402) are connected to one end of each of the two telescopic platforms (4). The two telescopic platforms (4) are detachably connected to each other via positioning bolts (404) between the positioning flanges (402). After the positioning flanges (402) are installed at the ends of the telescopic platforms (4), the longitudinal dimension of the ends is larger than the dimension of the slide rail. A transverse protective frame (401) is connected to the outer end of the telescopic platforms (4). The dimension of the transverse protective frame (401) is larger than the dimension of the slide rail.

4. A self-propelled rust removal device for steel bridges according to claim 3, characterized in that: The sliding bracket (3) and the telescopic platform (4) have multiple sets of positioning holes on their upper and lower sides respectively. When the two telescopic platforms (4) slide inward to fit together, the positioning holes of the sliding bracket (3) are opposite to some of the positioning holes of the telescopic platform (4), and the positioning pins (403) are inserted into the opposite positioning holes to position them. When the two telescopic platforms (4) slide outward to separate, the positioning holes of the sliding bracket (3) and the telescopic platform (4) are also positioned by the positioning pins (403) and the positioning holes.

5. A self-propelled rust removal device for steel bridges according to claim 1, characterized in that: The bottom end of the vertical bracket (2) and the upper side of the sliding bracket (3) are respectively provided with multiple connecting flanges (8), and the two are connected by bolts through the connecting flanges (8).

6. A self-propelled rust removal device for steel bridges according to claim 1, characterized in that: The limiting block (14) has a handle (17) on its side.

Images