Bridge pavement joint cutting apparatus

Abstract

The utility model provides a kind of bridge pavement cutting equipment, including pavement cutting machine, the bottom of pavement cutting machine is rotatably installed with multiple wheels, crossbar is arranged in pavement cutting machine side, crossbar is slidably connected with pavement cutting machine by connecting piece, both ends of crossbar are equipped with end, and end is provided with jack in one side, column rod is inserted in jack, column rod is mutually tied with bridge guardrail by rope, the utility model has the beneficial effects as follows: avoid the blade chipping caused by lateral eccentric load, shaft deformation, prolong the service life of cutter head, while ensuring the width, depth of expansion joint is consistent, guarantee bridge construction quality.

Description

Technical Field

[0001] This utility model is a bridge pavement joint cutting device, belonging to the field of bridge engineering. Background Technology

[0002] In the construction of concrete bridge decks, joint cutting machines are key equipment for ensuring bridge deck quality. Their core function is to cut transverse expansion joints on the formed concrete bridge deck, preventing irregular cracks caused by temperature changes or loads and extending the bridge's service life. The joint cutting machine integrates a walking mechanism, a lifting mechanism, and a cutting mechanism. During operation, the lifting mechanism adjusts the height of the cutting disc, allowing part of the disc to cut below the concrete pavement. The high-speed rotation of the cutting disc then cuts the pavement. The operator pushes the machine along a preset trajectory to complete continuous joint cutting operations.

[0003] The movement of a cutting machine is susceptible to uneven thrust, leading to equipment tilting and cutter head damage. Because the cutting head is partially embedded in the road surface, movement requires overcoming the frictional resistance between the head and the cement. Furthermore, the machine itself has a certain weight, necessitating stable thrust from the operator to maintain straight-line movement. However, in actual operation, factors such as operator habits and hand force deviations can cause uneven thrust, such as uneven force applied by one hand or different amounts of force from both hands, causing the machine to deviate from the preset cutting direction and tilt. Tilting the machine causes significant unbalanced forces on the cutting head: during normal straight cutting, the cutter head experiences uniform force, only needing to overcome the cutting resistance of the road surface; however, in a tilted state, the contact pressure between one side of the cutter head and the road surface increases sharply, while the force on the other side decreases, creating a lateral load imbalance. This unbalanced force directly affects the cutting edge and shaft of the cutter head, easily causing blade breakage and accelerated wear, and potentially leading to shaft deformation, bearing damage, and shortening the lifespan of the cutting head. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a bridge pavement joint cutting device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bridge pavement joint cutting device, comprising: A road cutter with multiple rotating wheels mounted at the bottom; A crossbar is installed on one side of the road cutting machine. The crossbar is slidably connected to the road cutting machine through a connector. Both ends of the crossbar are equipped with end caps, and one side of each end cap has an insertion hole. The column is inserted into the hole and is tied to the bridge railing by a rope.

[0006] Furthermore, the connector includes a first semi-circular sleeve. The first semi-circular sleeve is installed on one side of the road cutting machine through an adjusting component. The first semi-circular sleeve is fitted onto the crossbar and slides in contact with the crossbar. A second semi-circular sleeve is provided on one side of the first semi-circular sleeve, which together with the first semi-circular sleeve forms a ring-shaped structure. The second semi-circular sleeve is fitted onto the crossbar and slides in contact with the crossbar. The two ends of the first semi-circular sleeve are respectively connected to the two ends of the second semi-circular sleeve by bolts.

[0007] Furthermore, the adjusting component includes a rectangular tube, and a rectangular tube is installed on one side of the road cutting machine by screws. A rectangular plate is inserted inside the rectangular tube, and the end of the rectangular plate located outside the rectangular tube is connected and fixed to the first semicircular sleeve. A positioning screw for limiting the relative position of the rectangular plate and the rectangular tube is threaded on the side of the upper surface of the rectangular tube near the first semicircular sleeve.

[0008] Furthermore, the positioning screw is threaded with a threaded sleeve, one end of which is fixedly connected to the rectangular tube, and the threaded sleeve communicates with the internal space of the rectangular tube.

[0009] Furthermore, a connecting seat is fixed to the end of the rectangular tube away from the first semicircular sleeve, and the connecting seat is connected to the road cutting machine by multiple screws.

[0010] Furthermore, a base plate that contacts the bridge deck is installed at the lower end of the column, and multiple rope holes are equally spaced from top to bottom on the outer surface of the column.

[0011] Furthermore, the road cutting machine also includes a water storage tank. A shut-off valve is installed on the lower part of one side of the water storage tank. The end of the shut-off valve away from the water storage tank is connected to a protective cover through a connecting pipe. The protective cover is fitted onto the cutter head in the road cutting machine, and the end of the connecting pipe near the protective cover is directly above the cutter head.

[0012] Furthermore, each of the two parallel sides of the water tank is equipped with a plug sleeve, a handle rod is inserted inside the plug sleeve, and a clamping screw for limiting the relative position of the handle rod and the plug sleeve is threaded to the upper part of the outer surface of the plug sleeve.

[0013] Furthermore, a threaded head is installed at one end of the crossbar, and a threaded blind hole is opened on the side of the crossbar away from the threaded head. The threaded head on one crossbar is threadedly connected to the threaded blind hole on another crossbar, and the outermost two crossbars of the structure formed by the multiple crossbars are respectively connected and fixed to the two ends.

[0014] The beneficial effects of this utility model are: The posts are secured to the bridge railing with ropes, and the ends of the crossbars are connected to the posts through insertion holes, forming a rigid guide link of railing-rope-post-crossbar-road cutter. When the operator pushes the road cutter, it slides along the crossbar. Even if the thrust is uneven, the road cutter will not deviate from the preset cutting trajectory and will always move in a straight line. This design eliminates the risk of the road cutter tilting, ensures that the cutting disc is evenly stressed, avoids blade breakage and shaft deformation caused by lateral load, extends the service life of the cutting disc, and ensures that the width and depth of the expansion joints are consistent, thus guaranteeing the quality of bridge deck construction. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a bridge pavement joint cutting device according to the present invention; Figure 2 This is a schematic diagram of the assembly of the crossbar, rectangular plate and rectangular tube in a bridge pavement joint cutting device of this utility model; Figure 3 This is a schematic diagram of the assembly of the crossbar, rectangular plate and rectangular tube in a bridge pavement cutting device according to this utility model from another perspective. Figure 4 This is a schematic diagram of the assembly of a rectangular plate and a rectangular tube in a bridge pavement joint cutting device according to the present invention. In the picture: 1. Road surface cutter; 11. Handle lever; 12. Connecting sleeve; 13. Clamping screw; 14. Water tank; 15. Shut-off valve; 16. Wheel; 17. Connecting pipe; 18. Protective cover; 2. Crossbar; 21. End; 22. Insertion hole; 23. Threaded head; 24. Threaded blind hole; 3. Column; 31. Rope hole; 32. Base; 4. Rectangular tube; 41. Positioning screw; 42. Rectangular plate; 43. Second semicircular sleeve; 44. Connecting seat; 45. First semicircular sleeve; 46. Threaded sleeve. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] Please see Figure 1This utility model provides a technical solution: a bridge pavement joint cutting device, including a pavement cutter 1. Multiple wheels 16 are rotatably mounted on the bottom of the pavement cutter 1. The pavement cutter 1 also includes a water storage tank 14. A shut-off valve 15 is installed on the lower part of one side of the water storage tank 14. The end of the shut-off valve 15 away from the water storage tank 14 is connected to a protective cover 18 via a connecting pipe 17. The protective cover 18 is fitted onto the cutter head in the pavement cutter 1. The end of the connecting pipe 17 near the protective cover 18 is directly above the cutter head. After the shut-off valve 15 is opened, water in the water storage tank 14 flows through the connecting pipe 17 to the cutter head in the protective cover 18, thereby cooling the cutter head used for cutting the bridge surface and preventing it from wearing out too quickly due to high temperatures. Each of the two parallel sides of the water tank 14 is equipped with a connector sleeve 12. A handle rod 11 is inserted into the connector sleeve 12. A clamping screw 13 is threaded onto the upper part of the outer surface of the connector sleeve 12 to limit the relative position of the handle rod 11 and the connector sleeve 12. By adjusting the position of the handle rod 11 along the connector sleeve 12 and using the clamping screw 13 to limit the position of the handle rod 11, the length of the handle rod 11 extending to the outside of the road cutter 1 can be adjusted, making it convenient for different operators to push the equipment. The specific structure and working principle of the road cutter 1 have been fully disclosed in the prior art, and therefore will not be described in detail here.

[0018] See Figures 1-4A crossbar 2 is positioned on one side of the road cutter 1. A rectangular tube 4 is provided on one side of the road cutter 1. A connecting seat 44 is fixedly connected to the end of the rectangular tube 4 away from the first semicircular sleeve 45, so that the connecting seat 44 is connected to the road cutter 1 by multiple screws, thus completing the assembly of the rectangular tube 4 and the road cutter 1. A rectangular plate 42 is inserted inside the rectangular tube 4. The end of the rectangular plate 42 located outside the rectangular tube 4 is fixedly connected to the first semicircular sleeve 45. A positioning screw 41 is threadedly connected to the side of the upper surface of the rectangular tube 4 near the first semicircular sleeve 45 to limit the relative position of the rectangular plate 42 and the rectangular tube 4. A threaded sleeve 46 is threadedly connected to the positioning screw 41. One end of the threaded sleeve 46 is fixedly connected to the rectangular tube 4. The threaded sleeve 46 communicates with the internal space of the rectangular tube 4. The threaded sleeve 46 can enhance the connection strength between the positioning screw 41 and the rectangular tube 4. The first semicircular sleeve 45 is fitted onto the crossbar 2 and slides in contact with it. A second semicircular sleeve 43, forming a ring structure with the first semicircular sleeve 45, is provided on one side of the first semicircular sleeve 45. The second semicircular sleeve 43 is fitted onto the crossbar 2 and slides in contact with it. The two ends of the first semicircular sleeve 45 are connected to the two ends of the second semicircular sleeve 43 by bolts, allowing the crossbar 2 to slide within the ring structure formed by the first and second semicircular sleeves 45 and 43, thus creating a sliding connection between the crossbar 2 and the road cutting machine 1. Adjusting the length of the rectangular plate 42 within the rectangular tube 4 and using the positioning screw 41 to limit the relative position of the rectangular plate 42 and the rectangular tube 4 changes the distance between the crossbar 2 and the road cutting machine 1. Therefore, when the road cutting machine 1 cuts road joints at different locations on the bridge deck, it is not necessary to adjust the relative position of the crossbar 2 and the bridge railing. This allows the road cutting machine 1 to cut multiple road joints with a single connection between the crossbar 2 and the bridge railing, improving construction efficiency.

[0019] See Figures 1-4 Both ends of the crossbar 2 are equipped with end caps 21, one side of which has a socket 22. The column rod 3 is inserted into the socket 22 and is tied to the bridge railing with a rope. The lower end of the column rod 3 is equipped with a base plate 32 that contacts the bridge deck, increasing the contact area between the column rod 3 and the bridge deck. The outer surface of the column rod 3 has multiple rope holes 31 evenly spaced from top to bottom, which facilitate the tying of ropes to the column rod 3 at different heights, adapting to bridge railings of different heights. The column rod 3 is fixed to the bridge railing with ropes, and the end caps 21 at both ends of the crossbar 2 cooperate with the column rod 3 through the socket 22, forming a rigid guide link of railing-rope-column-crossbar 2-road cutter 1. When the operator pushes the road cutter 1, the road cutter 1 slides along the crossbar 2. Even if the pushing force is uneven, the road cutter 1 will not deviate from the preset cutting trajectory and will always maintain a straight line. This design eliminates the risk of misalignment in the road surface cutter, ensures uniform force on the cutting disc, avoids blade breakage and shaft deformation caused by lateral uneven loading, extends the service life of the cutting disc, and at the same time ensures consistent width and depth of expansion joints, thus guaranteeing the quality of bridge deck construction.

[0020] See Figure 2 and Figure 3 One end of the crossbar 2 is fitted with a threaded head 23, and the side of the crossbar 2 away from the threaded head 23 has a threaded blind hole 24. The threaded head 23 on one crossbar 2 is threadedly connected to the threaded blind hole 24 on another crossbar 2. The outermost two crossbars 2 of the structure formed by multiple crossbars 2 are respectively connected and fixed to two end 21. By screwing the threaded head 23 on one crossbar 2 into the threaded blind hole 24 on another crossbar 2, and so on, the assembly of multiple crossbars 2 is completed. This allows the number of crossbars 2 to be increased according to the width of the bridge deck, adapting to the cutting requirements of bridge decks of different widths, without the need to customize crossbars 2 of special length, thus reducing equipment adaptation costs.

[0021] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bridge pavement joint cutting device, characterized in that, include: A road cutter (1) with multiple wheels (16) mounted on its bottom; A crossbar (2) is set on one side of the road cutting machine (1). The crossbar (2) is slidably connected to the road cutting machine (1) through a connector. Both ends of the crossbar (2) are equipped with end caps (21), and one side of the end caps (21) is provided with a socket (22). The column (3) is inserted into the insertion hole (22), and the column (3) is tied to the bridge railing by a rope. The connector includes a first semicircular sleeve (45). The first semicircular sleeve (45) is installed on one side of the road cutting machine (1) through an adjusting component. The first semicircular sleeve (45) is sleeved on the crossbar (2) and slides in contact with the crossbar (2). A second semicircular sleeve (43) is provided on one side of the first semicircular sleeve (45) to form a ring structure together with the first semicircular sleeve (45). The second semicircular sleeve (43) is sleeved on the crossbar (2) and slides in contact with the crossbar (2). The two ends of the first semicircular sleeve (45) are respectively connected to the two ends of the second semicircular sleeve (43) by bolts.

2. The bridge pavement joint cutting device according to claim 1, characterized in that: The adjusting component includes a rectangular tube (4). The rectangular tube (4) is installed on one side of the road cutting machine (1) by screws. A rectangular plate (42) is inserted inside the rectangular tube (4). The end of the rectangular plate (42) located outside the rectangular tube (4) is connected and fixed to the first semicircular sleeve (45). The upper surface of the rectangular tube (4) near the first semicircular sleeve (45) is threaded with a positioning screw (41) for limiting the relative position of the rectangular plate (42) and the rectangular tube (4).

3. The bridge pavement joint cutting device according to claim 2, characterized in that: The positioning screw (41) is threaded with a threaded sleeve (46), one end of which is fixed to the rectangular tube (4), and the threaded sleeve (46) communicates with the internal space of the rectangular tube (4).

4. A bridge pavement joint cutting device according to claim 2, characterized in that: The rectangular tube (4) is connected to a connecting seat (44) at one end away from the first semicircular sleeve (45), and the connecting seat (44) is connected to the road cutting machine (1) by multiple screws.

5. A bridge pavement joint cutting device according to claim 1, characterized in that: The lower end of the column (3) is equipped with a base plate (32) that contacts the bridge deck, and the outer surface of the column (3) is provided with multiple rope holes (31) at equal intervals from top to bottom.

6. A bridge pavement joint cutting device according to claim 1, characterized in that: The road cutting machine (1) also includes a water storage tank (14). A shut-off valve (15) is installed on the lower part of one side of the water storage tank (14). The end of the shut-off valve (15) away from the water storage tank (14) is connected to a protective cover (18) through a connecting pipe (17). The protective cover (18) is fitted on the cutter head in the road cutting machine (1). The end of the connecting pipe (17) near the protective cover (18) is directly above the cutter head.

7. A bridge pavement joint cutting device according to claim 6, characterized in that: The water storage tank (14) has two parallel sides with upper parts of each side equipped with a plug sleeve (12). A handle rod (11) is inserted into the plug sleeve (12). A clamping screw (13) for limiting the relative position of the handle rod (11) and the plug sleeve (12) is threaded onto the upper part of the outer surface of the plug sleeve (12).

8. A bridge pavement joint cutting device according to claim 1, characterized in that: One end of the crossbar (2) is fitted with a threaded head (23), and the side of the crossbar (2) away from the threaded head (23) is provided with a threaded blind hole (24). The threaded head (23) on one crossbar (2) is threadedly connected to the threaded blind hole (24) on another crossbar (2). The outermost two crossbars (2) of the structure formed by the multiple crossbars (2) are respectively connected and fixed to two ends (21).

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