Steel slag asphalt mixture pavement bridge expansion joint quick cutting device

Abstract

This utility model relates to the field of expansion joint cutting technology, specifically a rapid cutting device for expansion joints in steel slag asphalt mixture pavement bridge decks. It includes: a drive motor with several cutting blades mounted on both sides and a steering gear mounted on the upper end of the drive motor; a work box with transmission rods on both sides, a guide rod at one end of each transmission rod, and a guide wheel at the lower end of each guide rod. The beneficial effect is that the guide rods and guide wheels can be placed in the drainage ditches on both sides of the bridge deck, with the guide wheels fitting against the sidewalls of the drainage ditches. When making transition turns, because the drainage ditches and bridge deck curve in the same direction, the sidewalls of the drainage ditches squeeze the guide wheels, causing the guide rods to rotate. The rotation of the guide rods drives the transmission rods to shift, which in turn drives the steering gear on the upper end of the drive motor to rotate, thereby causing the cutting blades inside the work box to rotate. This eliminates the need for manual adjustment at the cutting junction.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint cutting technology, specifically a rapid cutting device for expansion joints in steel slag asphalt mixture pavement bridge decks. Background Technology

[0002] Currently, bridges account for an increasingly larger proportion of highway projects such as expressways and urban viaducts. After the bridge deck pavement layer is constructed, in order to prevent irregular cracks from forming due to thermal expansion and contraction, it is necessary to cut expansion joints in the bridge deck. This process is usually called "joint cutting," and its main purpose is to control and guide the shrinkage and expansion of concrete by pre-setting regular gaps, thereby avoiding the generation of irregular cracks.

[0003] In the existing technology, traditional kerfing devices mainly consist of guide wheels, a cutting module, a power unit, and a moving module. The guide wheels ensure that the equipment moves stably along a predetermined path, the cutting module is equipped with a diamond saw blade for precise cutting, the power unit provides stable power output, and the moving module is responsible for the smooth movement of the entire equipment. All components work together to ensure the accuracy and efficiency of the kerf.

[0004] However, when using traditional cutting devices, manual adjustment of the cutting machine is required when cutting the junction of straight and curved bridge decks. This process is not only cumbersome but also greatly reduces the working efficiency of the cutting machine. To address this problem, this utility model proposes a rapid cutting device for steel slag asphalt mixture pavement bridge deck expansion joints. Utility Model Content

[0005] The purpose of this invention is to provide a rapid cutting device for expansion joints in bridge decks constructed with steel slag asphalt mixture, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rapid cutting device for expansion joints of bridge decks paved with steel slag asphalt mixture, the rapid cutting device for expansion joints of bridge decks paved with steel slag asphalt mixture includes: a drive motor, several cutting blades installed on both sides of the drive motor, and a steering gear installed on the upper end of the drive motor;

[0007] The work box has transmission rods on both sides, a guide rod at one end of each transmission rod, and a guide wheel at the lower end of the guide rod.

[0008] Preferably, the work box has a rectangular parallelepiped structure, a support plate is fixedly installed on the inner wall of the work box, holes are opened on the surface of the support plate, fixed bearings are fixedly installed in the holes, several connecting blocks are fixedly installed at the bottom corner of the work box, universal wheels are fixedly installed at the bottom of the connecting blocks, a splash guard is fixedly installed at the lower end of the work box, and work handles are installed at both ends of the work box.

[0009] Preferably, rotating rods are installed at both ends of the driving motor, and a number of cutting knives arranged linearly and equidistantly are installed on the surface of the rotating rods, and a steering rod is fixedly installed at the upper end of the driving motor.

[0010] Preferably, a fixed frame is fixedly installed on the surface of the steering rod. The fixed frame is integrally in a "冂"-shaped structure. A number of partition plates are fixedly installed inside the fixed frame. The partition plates are located between the cutting knives. Holes are formed on both sides of the fixed frame, and rotating bearings are fixedly installed in the holes. The inner ring surface of the rotating bearing is fixedly connected to the surface of the rotating rod, and the outer wall of the upper end of the steering rod is fixedly connected to the inner ring surface of the fixed bearing on the surface of the support plate.

[0011] Preferably, there are two groups of transmission rods, and the two groups of transmission rods are centrosymmetrically structured. A first rack is fixedly installed at one end of one group of transmission rods, a second rack is installed at one end of the other group of transmission rods, and a transmission rack is fixedly installed at the other end of the transmission rod.

[0012] Preferably, the steering gear is fixedly installed at the top of the steering rod. The steering gear is stuck between the first rack and the second rack. The steering gear is meshed and connected with the first rack, and the steering gear is meshed and connected with the second rack.

[0013] Preferably, the guiding rod is entirely located inside the guiding tube. An installation bearing is fixedly installed on the upper surface of the guiding tube. The inner ring surface of the installation bearing is fixedly connected to the outer wall of the guiding rod. The guiding rod can rotate inside the guiding tube. The guiding tube is fixedly installed on both sides of the working box. A guiding gear is fixedly installed at the upper end of the guiding rod. The guiding gear is meshed and connected with the transmission rack. A connecting plate is fixedly installed at the lower end of the guiding rod. A guiding wheel is installed at one end of the connecting plate. The guiding wheel can rotate at one end of the connecting plate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] A rapid cutting device for the expansion joint of a steel slag asphalt mixture paving bridge deck proposed by the present utility model, when in use, the guiding rod and the guiding wheel can be placed in the drainage ditches on both sides of the bridge deck, and the guiding wheel is attached to the side wall of the drainage ditch. When making a transitional turn, since the drainage ditch and the bridge deck have the same bending trajectory, when making a transitional turn, the side wall of the drainage ditch will squeeze the guiding wheel to make the guiding rod rotate. The rotation of the guiding rod will drive the transmission rod to displace, and the displacement of the transmission rod will drive the steering gear at the upper end of the driving motor to rotate, so as to make the cutting knives inside the working box rotate, realizing that no manual adjustment intervention is required when cutting at the junction of a straight bridge and a turning bridge deck. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic side structural diagram of the present utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0019] Figure 4 This is a bottom view of the internal structure of this utility model.

[0020] In the diagram: 1. Drive motor; 2. Cutting blade; 3. Steering gear; 4. Work box; 5. Transmission rod; 6. Guide rod; 7. Guide wheel; 8. Support plate; 9. Connecting block; 10. Splash guard; 11. Caster wheel; 12. Rotating rod; 13. Steering rod; 14. Fixing frame; 15. First rack; 16. Second rack; 17. Transmission rack; 18. Mounting bearing; 19. Guide tube; 20. Guide gear. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1: Please refer to Figures 1 to 4 This utility model provides a technical solution: a rapid cutting device for expansion joints of bridge decks paved with steel slag asphalt mixture. The rapid cutting device for expansion joints of bridge decks paved with steel slag asphalt mixture includes: a drive motor 1, several cutting blades 2 installed on both sides of the drive motor 1, and a steering gear 3 installed on the upper end of the drive motor 1.

[0023] The work box 4 has transmission rods 5 on both sides, a guide rod 6 at one end of the transmission rod 5, and a guide wheel 7 at the lower end of the guide rod 6.

[0024] In use, the guide rod 6 and guide wheel 7 can be placed in the drainage ditches on both sides of the bridge deck, with the guide wheel 7 fitting against the side wall of the drainage ditch. When making a transition turn, since the drainage ditch and the bridge deck have the same curvature, the side wall of the drainage ditch will squeeze the guide wheel 7, causing the guide rod 6 to rotate. The rotation of the guide rod 6 will drive the transmission rod 5 to move, and the movement of the transmission rod 5 will drive the steering gear 3 at the upper end of the drive motor 1 to rotate, thereby causing the cutting blade 2 inside the work box 4 to rotate. This eliminates the need for manual adjustment when cutting the junction of the straight bridge and the curved bridge deck, thus avoiding the problem of tedious adjustment process reducing the working efficiency of the cutting machine.

[0025] Example 2: Based on Example 1, a guide rod 6 is provided to enable precise adjustment of the running angle. The guide rod 6 is located entirely within the guide tube 19. A mounting bearing 18 is fixedly installed on the upper surface of the guide tube 19, and the inner ring surface of the mounting bearing 18 is fixedly connected to the outer wall of the guide rod 6. The guide rod 6 can rotate within the guide tube 19. The guide tube 19 is fixedly installed on both sides of the work box 4. A guide gear 20 is fixedly installed on the upper end of the guide rod 6, and the guide gear 20 meshes with the transmission rack 17. A connecting plate is fixedly installed on the lower end of the guide rod 6, and a guide wheel 7 is installed on one end of the connecting plate. The guide wheel 7 can rotate at one end of the connecting plate. During cutting, the operator places the guide rod 6 and guide wheel 7 located on both sides of the work box 4 into the drainage ditches on both sides of the bridge deck, and makes the guide wheel 7 adhere to the side wall of the drainage ditch. When the bridge deck makes a transitional turn, the guide wheel 7 adheres to the side wall of the drainage ditch, which will squeeze the guide wheel 7 and cause the guide rod 6 to rotate. The rotation of the guide rod 6 will cause the transmission rack 17, which is meshed with the guide gear 20, to move. There are two sets of transmission rods 5, which are centrally symmetrical. One set of transmission rods 5 has a first rack 15 fixedly installed at one end, and the other set of transmission rods 5 has a second rack 16 installed at one end and a transmission rack 17 fixedly installed at the other end. The steering gear 3 is fixedly installed on the top of the steering rod 13. The steering gear 3 is locked between the first rack 15 and the second rack 16. The steering gear 3 is meshed with the first rack 15 and the second rack 16. When the transmission racks 17 on both sides of the working box 4 move, they will cause the transmission rod 5 at one end of the transmission rack 17 to move, thereby causing the steering gear 3 located between the first rack 15 and the second rack 16 to rotate. The rotation of the steering gear 3 will cause the cutting blade 2 in the fixed frame 14 to rotate, thereby achieving the effect of self-adjusting the running angle precisely.

[0026] Embodiment 3: On the basis of Embodiment 2, a working box 4 is provided for convenient overall use. The working box 4 is generally rectangular in structure. A support plate 8 is fixedly installed on the inner wall of the working box 4. Holes are formed on the surface of the support plate 8, and fixed bearings are fixedly installed in the holes. A plurality of connecting blocks 9 are fixedly installed at the bottom corners of the working box 4. A universal wheel 11 is fixedly installed at the bottom of the connecting block 9. A splash-proof plate 10 is fixedly installed at the lower end of the working box 4. Working handles are installed at both ends of the working box 4. Rotating rods 12 are installed at both ends of the driving motor 1. A plurality of cutting knives 2 arranged linearly and equidistantly are installed on the surface of the rotating rod 12. A steering rod 13 is fixedly installed at the upper end of the driving motor 1. A fixed frame 14 is fixedly installed on the surface of the steering rod 13. The fixed frame 14 is generally in a "冂" - shaped structure. A plurality of partition plates are fixedly installed in the fixed frame 14. The partition plates are located between the cutting knives 2. Holes are formed on both sides of the fixed frame 14, and rotating bearings are fixedly installed in the holes. The inner ring surface of the rotating bearing is fixedly connected to the surface of the rotating rod 12. The outer wall of the upper end of the steering rod 13 is fixedly connected to the inner ring surface of the fixed bearing on the surface of the support plate 8. A splash - proof plate 10 is fixedly installed behind the cutting knives 2. The splash - proof plate 10 can effectively prevent the flying stones generated by cutting from injuring the staff, thus making it more convenient to use the overall device.

[0027] Working principle: During actual use, the guide rod 6 and the guide wheel 7 can be placed in the drainage ditches on both sides of the bridge deck, and the guide wheel 7 is fitted to the side wall of the drainage ditch. When making a transitional turn, since the bending trajectory of the drainage ditch is the same as that of the bridge deck, when making a transitional turn, the side wall of the drainage ditch will squeeze the guide wheel 7 to make the guide rod 6 rotate. The rotation of the guide rod 6 will cause the transmission rod 5 to displace. The displacement of the transmission rod 5 will cause the steering gear 3 at the upper end of the driving motor 1 to rotate, so that the cutting knives 2 inside the working box 4 rotate. This realizes that when cutting the junction of the straight bridge and the turning bridge deck, no manual adjustment intervention is required, thus avoiding the problem of the cumbersome adjustment process and reducing the working efficiency of the cutting machine.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid cutting device for expansion joints in bridge decks paved with steel slag asphalt mixture, characterized in that: The rapid cutting device for the expansion joint of the steel slag asphalt mixture paving bridge deck includes: a driving motor (1), several cutting knives (2) are installed on both sides of the driving motor (1), and a steering gear (3) is installed on the upper end of the driving motor (1); A working box (4), transmission rods (5) are arranged on both sides of the working box (4), a guide rod (6) is arranged at one end of the transmission rod (5), and a guide wheel (7) is installed at the lower end of the guide rod (6); The working box (4) is integrally in a cuboid structure. A support plate (8) is fixedly installed on the inner wall of the working box (4). Holes are formed on the surface of the support plate (8), and fixed bearings are fixedly installed in the holes. A plurality of connecting blocks (9) are fixedly installed at the bottom corners of the working box (4), a universal wheel (11) is fixedly installed at the bottom of the connecting block (9), a splash guard (10) is fixedly installed at the lower end of the working box (4), and working handles are installed at both ends of the working box (4).

2. The rapid cutting device for expansion joints in steel slag asphalt mixture pavement bridge decks according to claim 1, characterized in that: Rotating rods (12) are installed at both ends of the driving motor (1), and several cutting knives (2) arranged linearly and equidistantly are installed on the surface of the rotating rod (12), and a steering rod (13) is fixedly installed at the upper end of the driving motor (1).

3. The rapid cutting device for expansion joints in steel slag asphalt mixture pavement bridge decks according to claim 2, characterized in that: A fixed frame (14) is fixedly installed on the surface of the steering rod (13). The fixed frame (14) is integrally in an "L" - shaped structure. A plurality of partition plates are fixedly installed in the fixed frame (14). The partition plates are located between the cutting knives (2). Holes are formed on both sides of the fixed frame (14), and rotating bearings are fixedly installed in the holes. The inner ring surface of the rotating bearing is fixedly connected to the surface of the rotating rod (12), and the outer wall of the upper end of the steering rod (13) is fixedly connected to the inner ring surface of the fixed bearing on the surface of the support plate (8).

4. The rapid cutting device for expansion joints in steel slag asphalt mixture pavement bridge decks according to claim 1, characterized in that: There are two groups of transmission rods (5). The two groups of transmission rods (5) are in a centrosymmetric structure. A first rack (15) is fixedly installed at one end of one group of transmission rods (5), a second rack (16) is installed at one end of the other group of transmission rods (5), and a transmission rack (17) is fixedly installed at the other end of the transmission rod (5).

5. The rapid cutting device for expansion joints in steel slag asphalt mixture pavement bridge decks according to claim 1, characterized in that: The steering gear (3) is fixedly installed at the top of the steering rod (13). The steering gear (3) is stuck between the first rack (15) and the second rack (16). The steering gear (3) is meshed and connected with the first rack (15), and the steering gear (3) is meshed and connected with the second rack (16).

6. The rapid cutting device for expansion joints in steel slag asphalt mixture pavement bridge decks according to claim 1, characterized in that: The guide rod (6) is entirely located in the guide tube (19). An installation bearing (18) is fixedly installed on the upper surface of the guide tube (19). The inner ring surface of the installation bearing (18) is fixedly connected to the outer wall of the guide rod (6). The guide rod (6) can rotate in the guide tube (19). The guide tube (19) is fixedly installed on both sides of the working box (4). A guide gear (20) is fixedly installed at the upper end of the guide rod (6). The guide gear (20) is meshed and connected with the transmission rack (17). A connecting plate is fixedly installed at the lower end of the guide rod (6), and a guide wheel (7) is installed at one end of the connecting plate. The guide wheel (7) can rotate at one end of the connecting plate. It should be noted that in the original text, the description of the fixed frame (14) in should be "冂”字形, which is misspelled as "L" - shaped in the translation. It should be corrected according to the actual situation. And the overall translation tries to keep the original text structure and technical terms as accurately as possible while conforming to English grammar and expression habits.

Images