Ground cutting device for bridge construction

Abstract

The utility model provides a ground cutting device for bridge construction, including main bearing shell, cutting seam drive motor, driving sprocket, transmission chain, driven sprocket, the top of main bearing shell has motor installation table, and the top fixed connection cutting seam drive motor of motor installation table has cutting mechanism installation groove in the inside of main bearing shell, and one side of main bearing shell has knob bearing platform, and the side away from knob bearing platform of cutting mechanism installation groove has fixed bearing connecting table, and the middle part of fixed bearing connecting table has sprocket shaft connecting groove, and fixed bearing is inserted to the inside fixed of fixed bearing connecting table, and the side of fixed bearing towards cutting mechanism installation groove middle part is provided with fixed cutting table bearing shaft, and the side of fixed cutting table bearing shaft towards fixed bearing is provided with fixed bearing connecting shaft, and fixed bearing connecting shaft is fixedly connected with fixed bearing inner ring.

Description

Technical Field

[0001] This utility model relates to the field of road and bridge construction, and in particular to a ground cutting device for road and bridge construction. Background Technology

[0002] An existing patent (publication number: CN222961869U) proposes a ground cutting device for road and bridge construction, including a support frame. The support frame has an adjustable platform that can slide up and down inside. The upper end of the support frame is provided with an up-and-down driving component that drives the adjustable platform to slide up and down. However, this device "can drive the cutting disc to rotate by rotating the shaft, and the cutting disc can cut the road surface by rotating." The cutting disc will generate high heat during the cutting process, and the continuous high temperature may damage the disc. Summary of the Invention

[0003] This utility model addresses the aforementioned shortcomings of the existing technology by providing a ground cutting device for road and bridge construction that prevents the cutting disc from being damaged due to excessive temperature during cutting operations. At the same time, the gaps between the fixed cooling platform, the moving cooling platform and the cutting disc are small, so that the coolant sprayed from the injection port will not be easily thrown away by the cutting disc. This allows the coolant to continuously accumulate on the side of the cutting disc for continuous cooling, thus protecting the cutting disc from damage due to overheating.

[0004] The objective of this utility model is achieved through the following technical solution: A ground cutting device for road and bridge construction includes a main bearing shell, a cutting drive motor, a drive sprocket, a transmission chain, and a driven sprocket. The main bearing shell has a motor mounting platform on its top, and the cutting drive motor is fixedly connected to the top of the motor mounting platform. The main bearing shell has a cutting mechanism mounting groove inside, and a knob bearing platform on one side of the main bearing shell. A fixed bearing connecting platform is located on the side of the cutting mechanism mounting groove away from the knob bearing platform. A sprocket shaft connecting groove is located in the middle of the fixed bearing connecting platform. The fixed bearing is inserted into the fixed bearing connecting platform and fixed. A fixed cutting table bearing shaft is provided on the side of the fixed bearing facing the middle of the cutting mechanism mounting groove. A fixed bearing connecting shaft is located on the side of the fixed cutting table bearing facing the fixed bearing. The fixed bearing connecting shaft is fixedly connected to the inner ring of the fixed bearing. A sprocket connecting shaft is located on the side of the fixed bearing connecting shaft facing the sprocket shaft connecting groove.

[0005] The sprocket connecting shaft is rotatably connected to the sprocket shaft connecting groove. The sprocket connecting shaft passes through the sprocket shaft connecting groove and is fixedly connected to the driven sprocket. The kerf drive motor has a transmission shaft that is fixedly connected to the driving sprocket. The driving sprocket and the driven sprocket are connected through a transmission chain. The fixed cutting table bearing shaft is fixedly connected to the fixed cutting disc bearing on the side away from the fixed bearing bearing. The fixed cutting disc bearing has a cutting table docking groove on the side away from the fixed cutting table bearing shaft. Multiple sets of cutting table docking grooves are evenly arranged around the central axis of the fixed cutting disc bearing. The outer side of the fixed cutting disc bearing has cutting disc docking tooth grooves. Multiple sets of cutting disc docking tooth grooves are evenly arranged around the central axis of the fixed cutting disc bearing. The number of cutting disc docking tooth grooves is an integer multiple of the number of cutting table docking grooves. A cutting disc is provided on the side of the fixed cutting disc bearing.

[0006] The cutting disc has cutting disc mating teeth inside, which are adapted to the cutting disc mating tooth groove. The cutting disc mating teeth connect to the cutting disc mating tooth groove and are inserted into the cutting disc mating tooth groove. A fixed cooling platform is provided on the top of the fixed cutting disc support platform. A fixed cooling platform connecting rod is provided on the side of the fixed cooling platform facing the fixed support bearing. The end of the fixed cooling platform connecting rod is fixedly connected to the cutting mechanism mounting groove. A movable cooling platform is provided on the side of the fixed cooling platform away from the fixed cooling platform connecting rod. A movable cooling platform positioning rod is provided on the side of the movable cooling platform. A movable cooling platform positioning sleeve is provided on the side of the cutting mechanism mounting groove corresponding to the movable cooling platform positioning rod. The movable cooling platform positioning rod is adapted to the movable cooling platform positioning sleeve.

[0007] Beneficial effects: 1. When performing ground cutting operations, the liquid injection ports of the fixed cooling platform and the moving cooling platform simultaneously spray liquid onto the cutting disc to cool it down and prevent it from being damaged due to excessive temperature during cutting operations. At the same time, the gaps between the fixed cooling platform and the moving cooling platform and the cutting disc are small, so that the coolant sprayed from the injection port will not be easily thrown off the cutting disc, and the coolant will continuously accumulate on the side of the cutting disc for continuous cooling, resulting in a good cooling effect.

[0008] 2. The fixed cutting disc support platform and the moving cutting disc support platform of this utility model adopt a split design. After the fixed cutting disc support platform and the moving cutting disc support platform are separated by turning the screw, the cutting disc can be directly removed for replacement, which increases the convenience of replacing the cutting disc of this device.

[0009] 3. In this utility model, the moving cutting table bearing shaft and the moving bearing connecting shaft are connected by a spring. After the moving bearing frame runs to its limit position, if the cutting table docking post and the cutting table docking groove are not completely aligned, the spring is compressed until the fixed cutting disc bearing platform rotates until the cutting table docking groove and the cutting table docking post are aligned. Then the spring relaxes, allowing the cutting table docking post to be inserted into the cutting table docking groove. This eliminates the need for precise positioning during the connection between the fixed and moving cutting disc bearing platforms, further increasing the convenience of changing the cutting disc.

[0010] 4. The side surfaces of the fixed cutting disc support platform and the moving cutting disc support platform of this utility model are provided with multiple sets of reinforcing ribs, which increases the overall strength of the fixed cutting disc support platform and the moving cutting disc support platform. This makes it less likely for the fixed cutting disc support platform and the moving cutting disc support platform to deviate or bend when carrying the cutting disc for cutting operations, resulting in good cutting stability. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a ground cutting device for road and bridge construction according to the present invention.

[0012] Figure 2 This is a diagram showing the installation state of the driven sprocket described in this utility model.

[0013] Figure 3 This is an internal structural diagram of a ground cutting device for road and bridge construction according to the present invention.

[0014] Figure 4 This is a front cross-sectional view of a ground cutting device for road and bridge construction according to the present invention.

[0015] Figure 5 This is a top view cross-sectional view of a ground cutting device for road and bridge construction according to the present invention.

[0016] Figure 6 This is a partially exploded left view of a ground cutting device for road and bridge construction according to the present invention.

[0017] Figure 7 This is a partial exploded right view of a ground cutting device for road and bridge construction according to the present invention.

[0018] Figure 8 This is a diagram showing the connection state between the dynamic support frame and the support shaft of the dynamic cutting table described in this utility model.

[0019] Figure 9 This is a schematic diagram of the main load-bearing shell structure described in this utility model. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: Example 1: A ground cutting device for road and bridge construction includes a main bearing shell 1, a cutting drive motor 3, a drive sprocket 5, a transmission chain 6, and a driven sprocket 8. The main bearing shell 1 has a motor mounting platform 2 on its top, and the cutting drive motor 3 is fixedly connected to the top of the motor mounting platform 2. The main bearing shell 1 has a cutting mechanism mounting groove 9 inside. A knob support platform 4 is located on one side of the main bearing shell 1. A fixed bearing connecting platform 14 is located on the side of the cutting mechanism mounting groove 9 away from the knob support platform 4. A sprocket shaft connecting groove 13 is located in the middle of the fixed bearing connecting platform 14. A fixed bearing 15 is inserted into the fixed bearing connecting platform 14 and fixedly fixed. A fixed cutting table support shaft 43 is provided on the side of the fixed bearing 15 facing the middle of the cutting mechanism mounting groove 9. A fixed bearing connecting shaft 44 is located on the side of the fixed cutting table support shaft 43 facing the fixed bearing 15. The fixed bearing connecting shaft 44 is fixedly connected to the inner ring of the fixed bearing 15. A sprocket connecting shaft 7 is located on the side of the fixed bearing connecting shaft 44 facing the sprocket shaft connecting groove 13.

[0021] Example 2: The sprocket connecting shaft 7 of this utility model is rotatably connected to the sprocket shaft connecting groove 13. The sprocket connecting shaft 7 passes through the sprocket shaft connecting groove 13 and is fixedly connected to the driven sprocket 8. The kerf drive motor 3 has a transmission shaft fixedly connected to the driving sprocket 5. The driving sprocket 5 and the driven sprocket 8 are connected through a transmission chain 6. The fixed cutting table bearing shaft 43 is fixedly connected to the fixed cutting disc bearing platform 16 on the side away from the fixed bearing bearing 15. The side surfaces of the fixed cutting disc bearing platform 16 and the moving cutting disc bearing platform 18 are provided with multiple sets of reinforcing ribs to increase the overall strength of the fixed cutting disc bearing platform 16 and the moving cutting disc bearing platform 18. This makes it less likely for the fixed cutting disc bearing platform 16 and the moving cutting disc bearing platform 18 to deviate or bend when the cutting disc 17 is being kerfed, resulting in good cutting stability. The platform 16 has a cutting table docking groove 19 on the side away from the fixed cutting table bearing axis 43. Multiple sets of cutting table docking grooves 19 are evenly arranged around the central axis of the fixed cutting disc bearing platform 16. The outer side of the fixed cutting disc bearing platform 16 has a cutting disc docking tooth groove 42. The fixed cutting disc bearing platform 16 and the moving cutting disc bearing platform 18 adopt a split design. After the fixed cutting disc bearing platform 16 and the moving cutting disc bearing platform 18 are separated by turning the screw operation torque 25, the cutting disc 17 can be directly removed for replacement, which increases the convenience of replacing the cutting disc 17. Multiple sets of cutting disc docking tooth grooves 42 are evenly arranged around the central axis of the fixed cutting disc bearing platform 16. The number of cutting disc docking tooth grooves 42 is an integer multiple of the number of cutting table docking grooves 19. The cutting disc 17 is provided on the side of the fixed cutting disc bearing platform 16.

[0022] Example 3: The cutting disc 17 of this utility model has a cutting disc docking tooth 41 inside, which is adapted to the cutting disc docking tooth groove 42. The cutting disc docking tooth 41 is connected to the cutting disc docking tooth groove 42 and inserted into the cutting disc docking tooth groove 42. A fixed cooling platform 10 is provided on the top of the fixed cutting disc support platform 16. A fixed cooling platform connecting rod 12 is provided on the side of the fixed cooling platform 10 facing the fixed support bearing 15. The end of the fixed cooling platform connecting rod 12 is fixedly connected to the cutting mechanism mounting groove 9. A movable cooling platform 11 is provided on the side of the fixed cooling platform 10 away from the fixed cooling platform connecting rod 12. A movable cooling platform positioning rod 38 is provided on the side of the movable cooling platform 11. A movable cooling platform positioning sleeve 39 is provided on the side of the cutting mechanism mounting groove 9 corresponding to the movable cooling platform positioning rod 38. The movable cooling platform positioning rod 38 is adapted to the movable cooling platform positioning sleeve 39.

[0023] Example 4: The moving cooling platform positioning rod 38 of this invention is connected to the moving cooling platform positioning sleeve 39. The moving cooling platform positioning rod 38 slides inside the moving cooling platform positioning sleeve 39. Both the fixed cooling platform 10 and the moving cooling platform 11 cover the top of the cutting disc 17. When performing ground cutting operations, the liquid injection ports 37 of the fixed cooling platform 10 and the moving cooling platform 11 simultaneously spray liquid onto the cutting disc 17 to cool it down and prevent the cutting disc 17 from overheating and being damaged during cutting operations. At the same time, the gap between the interior of the fixed cooling platform 10 and the moving cooling platform 11 and the cutting disc 17 is small, so that the coolant sprayed from the liquid injection ports 37 is not easily blocked. The cutting disc 17 is flung away, causing the coolant to continuously collect on the side of the cutting disc 17 for continuous cooling, resulting in a good cooling effect. Both the fixed cooling platform 10 and the moving cooling platform 11 have liquid injection ports 37 on their inner sides. Both the fixed cooling platform 10 and the moving cooling platform 11 have liquid supply pipe mounting platforms 34 at their bottoms. The coolant supply pipe 35 is inserted into the liquid supply pipe mounting platform 34 and fixed. The main bearing shell 1 has a liquid supply pipe clearance groove 33 on the side corresponding to the coolant supply pipe 35. The coolant supply pipe 35 passes through the liquid supply pipe clearance groove 33 and connects to the coolant supply mechanism. The moving cutting disc bearing platform 18 is provided on the side of the fixed cutting disc bearing platform 16 near the knob bearing platform 4.

[0024] Example 5: The movable cutting disc support platform 18 of this utility model has a cutting disc docking post 32 and a cutting disc positioning sleeve 40 on the side near the fixed cutting disc support platform 16. The cutting disc docking post 32 is positioned corresponding to the cutting disc docking groove 19, and the cutting disc positioning sleeve 40 is positioned corresponding to the cutting disc docking tooth groove 42. The cutting disc docking post 32 is adapted to the cutting disc docking groove 19 and is connected to the cutting disc docking groove 19. The cutting disc docking post 32 is inserted into the cutting disc docking groove 19. The cutting disc positioning sleeve 40 is adapted to the cutting disc docking tooth groove 42 and is connected to the cutting disc docking tooth groove 42. The cutting disc positioning sleeve 40 is inserted into the cutting disc docking tooth groove 42.

[0025] Example 6: The cutting disc positioning sleeve 40 of this utility model is pressed against the side of the cutting disc 17. The moving cutting disc support platform 18 is fixedly connected to the moving cutting disc support shaft 28 on the side facing the knob support platform 4. The moving cutting disc support shaft 28 and the moving bearing connecting shaft 47 are connected by a spring. After the moving support frame 31 runs to the limit position, if the position of the cutting disc docking post 32 and the cutting disc docking groove 19 are not completely aligned, the spring is compressed until the fixed cutting disc support platform 16 rotates until the position of the cutting disc docking groove 19 and the cutting disc docking post 32 are aligned. Then the spring relaxes, allowing the cutting disc docking post 32 to be inserted into the cutting disc docking groove. Inside 19, precise positioning is not required during the connection between the fixed cutting disc support 16 and the moving cutting disc support 18, further increasing the convenience of replacing the cutting disc 17. A moving bearing connecting shaft 47 is provided on the side of the moving cutting disc support shaft 28 facing the knob support 4. The side of the moving cutting disc support shaft 28 facing the moving bearing connecting shaft 47 has a shaft docking spline 46. The moving bearing connecting shaft 47 has a spline docking groove 45 inside. The spline docking groove 45 is adapted to the shaft docking spline 46. The spline docking groove 45 connects to the shaft docking spline 46, and the shaft docking spline 46 slides inside the spline docking groove 45.

[0026] Example 7: The movable bearing connecting shaft 47 and the movable cutting table bearing shaft 28 of this utility model are connected by a spring. The movable bearing connecting shaft 47 is fixedly connected to the inner ring of the movable bearing 21. A movable bearing frame 31 is provided on the outside of the movable bearing 21. The movable bearing 21 is inserted into the movable bearing frame 31 and fixed. The top of the movable bearing frame 31 has a cooling table docking claw 36. The side of the cooling table docking claw 36 is fixedly connected to the movable cooling table 11. The side surface of the movable bearing frame 31 has a movable bearing frame positioning groove 27. The knob bearing table 4 has a movable bearing frame positioning rod 26 inside. The movable bearing frame positioning rod 26 is adapted to the movable bearing frame positioning groove 27.

[0027] Example 8: The movable support frame positioning rod 26 of this utility model is connected to the movable support frame positioning groove 27. The movable support frame positioning rod 26 slides inside the movable support frame positioning groove 27. The bottom of the movable support frame 31 has a screw connecting groove 20, and the bottom of the knob support platform 4 has a screw positioning groove 23. An adjusting screw 22 is provided inside the screw connecting groove 20. The adjusting screw 22 is threadedly connected to the screw connecting groove 20. The side of the adjusting screw 22 has a screw positioning post 24. The screw positioning post 24 is rotatably connected to the screw positioning groove 23. The side of the screw positioning post 24 has a screw operating knob 25.

[0028] Example 9: The installation steps of this utility model are as follows: Insert the fixed bearing 15 into the fixed bearing connecting platform 14 of the main bearing housing 1; insert the fixed bearing connecting shaft 44 of the fixed cutting table bearing shaft 43 into the inner ring of the fixed bearing 15; fix the sprocket connecting shaft 7 of the fixed cutting table bearing shaft 43 to the driven sprocket 8; fix the top of the motor mounting platform 2 of the main bearing housing 1 to the kerf drive motor 3; fix the transmission shaft of the kerf drive motor 3 to the drive sprocket 5; connect the drive sprocket 5 and the driven sprocket 8 via the transmission chain 6; fix the side of the fixed cutting table bearing shaft 43 to the fixed cutting disc bearing platform 16; insert the cutting disc mating teeth 41 of the cutting disc 17 into the cutting disc mating tooth groove 42 of the fixed cutting disc bearing platform 16; fix the side of the fixed cooling platform connecting rod 12 of the fixed cooling platform 10 to the side wall of the cutting mechanism mounting groove 9; insert the moving cooling platform positioning rod 38 of the moving cooling platform 11 into the main bearing housing 1... Inside the positioning sleeve 39 of the moving cooling table, the positioning groove 27 of the moving support frame 31 is fitted onto the outside of the positioning rod 26 of the moving support frame on the main support shell 1. The moving support bearing 21 is inserted into the moving support frame 31. The shaft spline 46 of the moving cutting table support shaft 28 is inserted into the inner ring of the moving support frame 31. The moving support frame 31 is fixedly connected to the side of the moving cutting disc support table 18. The cutting table docking post 32 of the moving cutting disc support table 18 is inserted into the fixed cutting disc support table 18. Inside the cutting table docking groove 19 of the disc support platform 16, the cutting disc positioning sleeve 40 of the cutting disc support platform 18 is inserted into the cutting disc docking tooth groove 42 of the fixed cutting disc support platform 16, so that the cutting disc positioning sleeve 40 is pressed against the side of the cutting disc 17. The screw positioning pin 24 of the adjusting screw 22 is rotatably connected to the screw positioning groove 23 of the main support shell 1, so that the adjusting screw 22 is threadedly connected to the screw connecting groove 20 of the moving support frame 31. The installation of this device is completed.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A ground cutting device for road and bridge construction, characterized in that: The system includes a main bearing housing (1), a slit drive motor (3), a drive sprocket (5), a transmission chain (6), and a driven sprocket (8). The main bearing housing (1) has a motor mounting platform (2) on its top, and the slit drive motor (3) is fixedly connected to the top of the motor mounting platform (2). The main bearing housing (1) has a cutting mechanism mounting groove (9) inside. The main bearing housing (1) has a knob support platform (4) on one side. The cutting mechanism mounting groove (9) has a fixed bearing connecting platform (14) on the side away from the knob support platform (4). The fixed bearing connecting platform (14) has a central part. There is a sprocket shaft connecting groove (13). The fixed bearing (15) is inserted into the fixed bearing connecting table (14) and fixed. The fixed bearing (15) is provided with a fixed cutting table bearing shaft (43) on the side facing the middle of the cutting mechanism mounting groove (9). The fixed cutting table bearing shaft (43) has a fixed bearing connecting shaft (44) on the side facing the fixed bearing (15). The fixed bearing connecting shaft (44) is fixedly connected to the inner ring of the fixed bearing (15). The fixed bearing connecting shaft (44) has a sprocket connecting shaft (7) on the side facing the sprocket shaft connecting groove (13).

2. The ground cutting device for road and bridge construction according to claim 1, characterized in that: The sprocket connecting shaft (7) is rotatably connected to the sprocket shaft connecting groove (13). The sprocket connecting shaft (7) passes through the sprocket shaft connecting groove (13) and is fixedly connected to the driven sprocket (8). The kerf drive motor (3) has a transmission shaft that is fixedly connected to the driving sprocket (5). The driving sprocket (5) and the driven sprocket (8) are connected through a transmission chain (6). The fixed cutting table bearing shaft (43) is fixedly connected to the fixed cutting disc bearing platform (16) on the side away from the fixed bearing bearing (15). The fixed cutting disc bearing platform (16) is away from the fixed cutting table. The bearing shaft (43) has a cutting table docking groove (19) on one side. Multiple sets of cutting table docking grooves (19) are evenly arranged around the central axis of the fixed cutting disc bearing platform (16). The fixed cutting disc bearing platform (16) has a cutting disc docking tooth groove (42) on the outside. Multiple sets of cutting disc docking tooth grooves (42) are evenly arranged around the central axis of the fixed cutting disc bearing platform (16). The number of cutting disc docking tooth grooves (42) is an integer multiple of the number of cutting table docking grooves (19). A cutting disc (17) is provided on the side of the fixed cutting disc bearing platform (16).

3. The ground cutting device for road and bridge construction according to claim 2, characterized in that: The cutting disc (17) has cutting disc mating teeth (41) inside, which are adapted to the cutting disc mating groove (42). The cutting disc mating teeth (41) are connected to the cutting disc mating groove (42) and inserted into the cutting disc mating groove (42). A fixed cooling platform (10) is provided on the top of the fixed cutting disc support platform (16). The fixed cooling platform (10) has a fixed cooling platform connecting rod on the side facing the fixed support bearing (15). (12) The end of the fixed cooling platform connecting rod (12) is fixedly connected to the cutting mechanism mounting groove (9). A moving cooling platform (11) is provided on the side of the fixed cooling platform (10) away from the fixed cooling platform connecting rod (12). A moving cooling platform positioning rod (38) is provided on the side of the moving cooling platform (11). A moving cooling platform positioning sleeve (39) is provided on the side of the cutting mechanism mounting groove (9) corresponding to the moving cooling platform positioning rod (38). The moving cooling platform positioning rod (38) and the moving cooling platform positioning sleeve (39) are compatible.

4. The ground cutting device for road and bridge construction according to claim 3, characterized in that: The moving cooling platform positioning rod (38) is connected to the moving cooling platform positioning sleeve (39). The moving cooling platform positioning rod (38) slides inside the moving cooling platform positioning sleeve (39). The fixed cooling platform (10) and the moving cooling platform (11) are both covered on the top of the cutting disc (17). The fixed cooling platform (10) and the moving cooling platform (11) both have liquid injection ports (37) on their inner sides. The fixed cooling platform (10) and the moving cooling platform (11) both have liquid supply pipe mounting platforms (34) at their bottoms. The coolant supply pipe (35) is inserted into the liquid supply pipe mounting platform (34) and fixed. The main bearing shell (1) has a liquid supply pipe clearance groove (33) on the side corresponding to the coolant supply pipe (35). The coolant supply pipe (35) passes through the liquid supply pipe clearance groove (33) and is connected to the coolant supply mechanism. The moving cutting disc bearing platform (18) is provided on the side of the fixed cutting disc bearing platform (16) near the knob bearing platform (4).

5. A ground cutting device for road and bridge construction according to claim 4, characterized in that: The moving cutting disc support platform (18) has a cutting disc docking post (32) and a cutting disc positioning sleeve (40) on the side near the fixed cutting disc support platform (16). The cutting disc docking post (32) is in position with the cutting disc docking groove (19), and the cutting disc positioning sleeve (40) is in position with the cutting disc docking tooth groove (42). The cutting disc docking post (32) is adapted to the cutting disc docking groove (19). The cutting disc docking post (32) is connected to the cutting disc docking groove (19) and inserted into the cutting disc docking groove (19). The cutting disc positioning sleeve (40) is adapted to the cutting disc docking tooth groove (42) and connected to the cutting disc docking tooth groove (42). The cutting disc positioning sleeve (40) is inserted into the cutting disc docking tooth groove (42).

6. A ground cutting device for road and bridge construction according to claim 5, characterized in that: The cutting disc positioning sleeve (40) is pressed against the side of the cutting disc (17). The moving cutting disc support platform (18) is fixedly connected to the moving cutting table support shaft (28) on the side facing the knob support platform (4). The moving cutting table support shaft (28) is provided with a moving bearing connecting shaft (47) on the side facing the knob support platform (4). The moving cutting table support shaft (28) has a shaft docking spline (46) on the side facing the moving bearing connecting shaft (47). The moving bearing connecting shaft (47) has a spline docking groove (45) inside. The spline docking groove (45) is adapted to the shaft docking spline (46). The spline docking groove (45) is connected to the shaft docking spline (46). The shaft docking spline (46) slides inside the spline docking groove (45).

7. A ground cutting device for road and bridge construction according to claim 6, characterized in that: The moving bearing connecting shaft (47) and the moving cutting table bearing shaft (28) are connected by a spring. The moving bearing connecting shaft (47) is fixedly connected to the inner ring of the moving bearing (21). A moving bearing frame (31) is provided on the outside of the moving bearing (21). The moving bearing (21) is inserted into the moving bearing frame (31) and fixed.

8. A ground cutting device for road and bridge construction according to claim 6, characterized in that... The top of the moving support frame (31) has a cooling platform docking claw (36), the side of the cooling platform docking claw (36) is fixedly connected to the moving cooling platform (11), the side surface of the moving support frame (31) has a moving support frame positioning groove (27), the inside of the knob support platform (4) has a moving support frame positioning rod (26), and the moving support frame positioning rod (26) is adapted to the moving support frame positioning groove (27).

9. A ground cutting device for road and bridge construction according to claim 1, characterized in that: The positioning rod (26) of the moving support frame is connected to the positioning groove (27) of the moving support frame. The positioning rod (26) of the moving support frame slides inside the positioning groove (27) of the moving support frame. The bottom of the moving support frame (31) has a screw connection groove (20), and the bottom of the knob support platform (4) has a screw positioning groove (23).

10. A ground cutting device for road and bridge construction according to claim 1, characterized in that... An adjusting screw (22) is provided inside the screw connecting groove (20). The adjusting screw (22) is threadedly connected to the screw connecting groove (20). The adjusting screw (22) has a screw positioning post (24) on its side. The screw positioning post (24) is rotatably connected to the screw positioning groove (23). The screw positioning post (24) has a screw operating torque (25) on its side.

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