Joint cutter for road construction

Abstract

The invention relates to a joint cutting machine for road construction, the joint cutting machine comprises a rack, a cutting assembly for cutting joints on a road surface, an adjusting part and a balancing weight, the cutting assembly is slidably connected to the rack in the vertical direction, the balancing weight is slidably connected to the rack, and when the cutting assembly moves in the vertical direction, the adjusting part is used for adjusting the joints of the road surface. The adjusting piece is used for driving the balancing weight to move in the orthographic projection direction of the cutting assembly. The grooving machine has the effect of reducing head warping during grooving of the grooving machine.

Description

Technical Field

[0001] The present application relates to the field of road construction, and in particular to a seam cutting machine used for road construction. Background Art

[0002] Pavement Cutter is a device used to cut gaps in the road surface, mainly used in road maintenance and construction. It is often used to cut cement pavement and asphalt pavement to ensure the stability and durability of the pavement. Pavement Cutter plays a vital role in the construction process, thereby forming expansion joints in the pavement and reducing the occurrence of cracking due to temperature changes in the pavement.

[0003] At present, a Chinese utility model patent with publication number CN219218625U has disclosed a concrete cutting machine, including a frame, a cutting assembly and a limiting assembly; the cutting assembly is arranged on the frame and is used to cut concrete; the limiting assembly is arranged on the cutting assembly, and the limiting assembly includes a telescopic rod and a locking piece, the telescopic rod is rotatably connected to both sides of the cutting assembly, the locking piece is used to lock and fix the telescopic rod, and the telescopic rod is used to limit the cutting depth of the cutting assembly. This application has the effect of improving the accuracy of pavement cutting.

[0004] As the cutting depth of the cutting assembly increases, the back cutting amount of the saw blade increases, the cutting area increases, the cutting force increases, and the radial force exerted by the ground on the saw blade also increases, causing the saw blade to warp and the cutting effect to be poor. Summary of the invention In order to reduce the occurrence of warping of a seam cutter during seam cutting, the present application provides a seam cutter for road construction.

[0005] The present application provides a seam cutting machine for road construction, which adopts the following technical solution: A seam cutting machine for road construction comprises a frame, a cutting assembly for cutting seams on a road surface, an adjusting member and a counterweight block, wherein the cutting assembly is slidably connected to the frame in a vertical direction, and the counterweight block is slidably connected to the frame, and when the cutting assembly moves in a vertical direction, the adjusting member is used to drive the counterweight block to move in the direction of the orthographic projection of the cutting assembly.

[0006] By adopting the above technical scheme, when the seam cutter needs to cut a deeper seam, the staff can adjust the height of the cutting assembly. When the height of the cutting assembly gradually decreases, the adjustment piece will drive the counterweight block to move in the direction of the orthographic projection of the cutting assembly, thereby changing the position of the center of gravity of the seam cutter. When cutting a deeper seam, the radial force applied to the cutting assembly by the ground will also increase. By changing the position of the counterweight block, the influence of the gravity of the counterweight block on the cutting assembly is increased, and the center of gravity of the cutting machine gradually approaches the orthographic projection of the cutting assembly, thereby reducing the warping phenomenon of the seam cutter, allowing the cutting assembly to successfully complete the seam cutting operation, improving the consistency of the seam cutting depth, and improving the seam cutting quality.

[0007] Optionally, the adjusting member includes an adjusting block, an adjusting screw, a worm, a worm wheel and a mating screw, the adjusting block is slidably connected to the frame in a vertical direction, the cutting assembly is arranged on the adjusting block, the length direction of the adjusting screw is parallel to the sliding direction of the cutting assembly, the adjusting screw is rotatably connected to the frame, the adjusting block is threadedly connected to the adjusting screw, the worm is coaxially arranged with the adjusting screw, the worm is arranged on the adjusting screw, the length direction of the mating screw is parallel to the sliding direction of the counterweight block, the mating screw is rotatably connected to the frame, the counterweight block is threadedly connected to the mating screw, the worm wheel is arranged on the mating screw, and the worm wheel is meshed with the worm.

[0008] By adopting the above technical scheme, when the staff needs to adjust the cutting depth, the staff turns the adjusting screw, and the adjusting screw mobilizes the adjusting block to move in the vertical direction. At the same time, the adjusting screw drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the matching screw to rotate, and the matching screw drives the matching block to move, thereby changing the position change of the center of gravity of the seam cutter and reducing the situation where the cutting assembly tilts. The worm and the worm wheel have a self-locking effect, which reduces the position change of the cutting assembly and the counterweight block during the seam cutting process. The screw has high adjustment accuracy, which is convenient for the staff to accurately adjust the height of the cutting assembly.

[0009] Optionally, a guide disk for snapping into the slit is provided on the adjusting block.

[0010] By adopting the above technical solution, the guide plate is used to be clamped in the road surface after the slit is completed, and the guide plate is used to improve the straightness of the slit of the cutting assembly and improve the quality of the slit.

[0011] Optionally, the cutting assembly includes a slitting motor, a mounting disk and a saw blade, the slitting motor is arranged on the adjusting block, the mounting disk is arranged on the output shaft of the slitting motor, and the saw blade is arranged on the mounting disk.

[0012] By adopting the above technical solution, the slitting motor is used to drive the mounting plate to rotate, and the mounting plate drives the saw blade to rotate. The cutting assembly has a simple structure and is easy for operators to operate.

[0013] Optionally, a quick-release assembly for removing the saw blade is provided on the mounting disk, the quick-release assembly comprising a penetration column, a quick-release disk, a limiting column and a clamping piece, the penetration column is provided on the mounting disk, the length of the limiting column is parallel to the length direction of the penetration column, the limiting column is eccentrically provided on the mounting disk, a penetration hole for the penetration of the penetration column is provided on the saw blade, a limiting hole for the penetration of the limiting column is provided on the saw blade, the quick-release disk abuts against the side wall of the saw blade facing away from the mounting disk, the clamping piece is provided on the quick-release disk, and the clamping piece is used to clamp the limiting column.

[0014] By adopting the above technical solution, the commonly used saw blade is installed on the mounting plate by bolts, and the saw blade needs to be replaced by tools, which is cumbersome; the saw blade can be quickly replaced by the quick-release assembly. The staff aligns the through-hole of the saw blade with the through-hole of the mounting plate, and the limiting hole of the saw blade with the limiting column of the mounting column, and then the saw blade can be placed on the mounting plate. The saw blade can rotate with the mounting plate through the limiting column and the through-hole column. The quick-release plate and the mounting plate are used to clamp the saw blade. When the clamping member clamps the limiting column, the quick-insertion plate cannot move relative to the mounting plate, thereby realizing the installation of the saw blade.

[0015] Optionally, the clamping member includes a gear ring, a gear, a clamping block and a linkage block, the outer wall of the penetration column is provided with a spiral groove, the gear ring is rotatably connected to the quick-release plate, the inner wall of the gear ring is provided with a thread adapted to the penetration column, the gear and the limiting column are coaxially arranged, the gear is rotatably connected to the quick-release plate, the gear is meshed with the gear ring, a planar spiral groove is provided on the gear, the clamping block is slidably connected to the quick-release plate along the radial direction of the gear, the linkage block is arranged on the clamping block, the linkage block is located in the planar spiral groove, and the limiting column is provided with an annular groove for clamping the clamping block.

[0016] By adopting the above technical solution, when the quick-release plate is installed, the quick-release plate slides along the length direction of the penetration column, the spiral groove on the penetration column cooperates with the thread on the inner wall of the gear ring, the gear ring rotates relative to the installation plate, the gear ring drives the gear to rotate, the linkage block moves in the planar spiral groove, the linkage block drives the clamping block to move in the radial direction of the gear, the clamping block moves toward the axial direction of the gear, the clamping block moves into the annular groove of the limiting column, the sliding direction of the clamping block is perpendicular to the sliding direction of the quick-release plate, so the clamping block can limit the movement of the quick-release plate and complete the quick installation operation.

[0017] Optionally, the quick release assembly further includes a reset member, which includes a gripping block, a clamping column and a reset spring. The gripping block is slidably connected to the quick release plate in a direction close to or away from the penetration column. The clamping column is arranged on the gripping block. A clamping groove for clamping the clamping column is provided on the gear ring. The reset spring is used to keep the clamping column clamped in the clamping groove. By adopting the above technical solution, after the saw blade is installed, the clamping block limits the movement of the quick-release disk, and the holding block abuts against the penetration column under the action of the reset spring, and the clamping column on the holding block is clamped in the clamping groove of the gear ring, and the gear ring cannot rotate with the spiral groove of the penetration column, and the reset spring makes the clamping column of the holding block remain clamped with the clamping groove of the gear ring, so as to keep the position of the gear ring unchanged; when the saw blade needs to be removed, the staff drives the holding block to overcome the reset spring and move, and the clamping column on the holding block is disengaged from the clamping groove, and then the quick-release disk can be driven to move, and the gear ring on the quick-release disk rotates relative to the penetration column, and the gear ring drives the gear to rotate, and the linkage block moves in the direction away from the gear axis, and the clamping block moves in the direction away from the limiting column ring groove, and the quick-release disk can be removed.

[0018] Optionally, the holding block is provided with a holding groove for a staff member to hold.

[0019] By adopting the above technical solution, the holding groove makes it convenient for the staff to hold the holding block, and the holding groove can increase the friction of the holding block, making it convenient for the staff to operate.

[0020] Optionally, the frame is also provided with a water spray component for dissipating the heat of the saw blade, the water spray component includes a water tank, a water pump and a water pipe, the water tank is arranged on the frame, one end of the water pipe is arranged on the water tank, and the other point of the water pipe faces the saw blade, and the water pump is used to pump water from the water tank to the water pipe.

[0021] By adopting the above technical solution, when the saw blade cuts a seam on the ground, the saw blade will generate heat. The water spray component is used to spray water on the saw blade to achieve a cooling effect. The water pump pumps water from the water tank into the water pipe, and the water pipe sprays water onto the saw blade. The water spray component has a simple structure and is easy for staff to operate.

[0022] Optionally, the water pipe is arranged on the regulating block, and the water pipe is a hose.

[0023] By adopting the above technical solution, since the height of the cutting assembly will change, the water pipe is set on the adjusting block, so that the position of the water pipe relative to the saw blade remains unchanged, which better ensures the cooling effect of the saw blade when working. The water pipe is a hose to adapt to the position change of the adjusting block relative to the frame, and the structure is more reasonable.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The adjusting piece is used to change the distance between the counterweight block and the orthographic projection of the slitting group while the height of the cutting assembly changes, so as to change the center of gravity of the slitting machine and reduce the occurrence of the slitting machine tilting during the slitting process; 2. The quick-release assembly is used to quickly disassemble and assemble the saw blade; 3. The water spray part is used to spray water on the saw blade to cool it down when the slitting machine is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a seam cutting machine used in road construction.

[0026] Figure 2 yes Figure 1 A cutaway view of the midframe showing the adjustments.

[0027] Figure 3 yes Figure 2 A cross-sectional view of the cutting assembly showing the fit between the saw blade and the mounting plate.

[0028] Figure 4 yes Figure 3 The enlarged view of point A in the middle is used to show the structural schematic diagram of the clamping part.

[0029] Figure 5 yes Figure 1 Schematic diagram of the structure of the water spray part.

[0030] Figure numerals: 1, frame; 2, cutting assembly; 21, slitting motor; 22, mounting plate; 23, saw blade; 231, penetration hole; 232, limiting hole; 3, adjusting member; 31, adjusting block; 32, adjusting screw; 33, worm; 34, worm gear; 35, matching screw; 36, turntable; 37, guide plate; 4, counterweight; 5, water spray member; 51, water tank; 52, water pump; 53, water pipe; 6, quick release assembly; 6 1. Through-column; 611. Threaded groove; 62. Quick-release plate; 621. Placement cavity; 63. Limiting column; 631. Ring groove; 64. Clamping piece; 641. Ring gear; 642. Gear; 643. Clamping block; 644. Linkage block; 645. Plane threaded groove; 646. Snap-on groove; 65. Reset piece; 651. Holding block; 652. Snap-on column; 653. Reset spring; 654. Guide column; 655. Holding groove. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-5 This application is described in further detail.

[0032] The present application embodiment discloses a seam cutting machine for road construction. Figure 1 and Figure 2A seam cutting machine for road construction includes a frame 1, a cutting assembly 2, an adjusting member 3, a counterweight 4 and a water spraying member 5. The adjusting member 3 includes an adjusting block 31, an adjusting screw 32, a worm 33, a worm wheel 34, a matching screw 35 and a turntable 36. The adjusting block 31 is slidably connected to the frame 1 in the vertical direction. The adjusting screw 32 is vertically arranged. The adjusting screw 32 is rotatably connected to the upper end surface of the frame 1. The adjusting block 31 is threadedly connected to the adjusting screw 32. The turntable 36 is coaxially arranged with the adjusting screw 32. The turntable 36 is fixedly arranged on the upper end surface of the adjusting screw 32. The worm 33 is coaxially arranged with the adjusting screw 32. The upper end surface of the worm 33 is fixedly arranged on the lower end surface of the adjusting screw 32. The matching screw 35 It is set horizontally, and the length direction of the mating screw 35 is parallel to the moving direction of the frame 1. The mating screw 35 is rotatably connected to the frame 1. The worm gear 34 is coaxially set with the mating screw 35. The worm gear 34 is fixedly set on the mating screw 35. The worm gear 34 is meshed with the worm 33. The counterweight block 4 is slidably connected to the frame 1 along the length direction of the mating screw 35. The mating block is threadedly connected to the screw. The cutting assembly 2 is set on the adjusting block 31. When the cutting assembly 2 moves vertically downward, the counterweight block 4 is close to the positive projection direction of the cutting assembly 2. A guide plate 37 is also set on the adjusting block 31. The axis of the guide plate 37 is set horizontally. The guide plate 37 is rotatably connected to the adjusting block 31. The guide plate 37 is used to be clamped in the road surface cut.

[0033] Reference Figure 1 and Figure 2 The cutting assembly 2 includes a slitting motor 21, a mounting plate 22 and a saw blade 23. The slitting motor 21 is fixedly mounted on the adjusting block 31. The axis of the mounting plate 22 is horizontally mounted and perpendicular to the moving direction of the frame 1. The mounting plate 22 is fixedly mounted on the output shaft of the slitting motor 21. A quick-release assembly 6 is arranged on the mounting plate 22. The quick-release assembly 6 is used to mount the saw blade 23 on the mounting plate 22.

[0034] Reference Figure 3 and Figure 4The quick release assembly 6 includes a penetration column 61, a quick release plate 62, four limiting columns 63, a clamping member 64 and a reset member 65. The penetration column 61 is coaxially arranged with the mounting plate 22. The penetration column 61 is fixedly arranged on the side wall of the mounting plate 22 away from the slitting motor 21. The four limiting columns 63 are evenly distributed along the circumferential direction of the axis of the mounting plate 22. The length direction of the limiting column 63 is parallel to the length direction of the penetration column 61. The limiting column 63 is fixedly arranged on the side wall of the mounting plate 22 away from the slitting motor 21. The saw blade 23 is opened A penetration hole 231 is provided, and the penetration hole 231 is for the penetration column 61 to pass through. Four limiting holes 232 are opened on the saw blade 23, and the four limiting holes 232 correspond to the four limiting columns 63 one by one. The limiting holes 232 are for the limiting columns 63 to pass through. The saw blade 23 is abutted against the mounting plate 22 through the limiting holes 232 and the penetration holes 231. The quick-release plate 62 is located on the side of the saw blade 23 away from the mounting plate 22. The clamping member 64 is arranged on the quick-release plate 62, and the clamping member 64 is used to limit the movement of the saw blade 23 relative to the mounting plate 22.

[0035] Reference Figure 3 and Figure 4 The clamping member 64 includes a ring gear 641, four gears 642, sixteen clamping blocks 643 and sixteen linkage blocks 644. A placement cavity 621 is provided on the quick release plate 62. The ring gear 641, the gear 642, the clamping blocks 643 and the linkage blocks 644 are all located in the placement cavity 621. The ring gear 641 is coaxially arranged with the quick release plate 62. The ring gear 641 is rotatably connected to the quick release plate 62. A thread groove 611 is provided on the outer wall of the penetration column 61. The thread groove 611 extends along the length direction of the penetration column 61. A thread is provided on the inner wall of the ring gear 641. The thread of the ring gear 641 cooperates with the thread groove 611 of the penetration column 61. The four gears 642 are evenly distributed circumferentially along the axis of the ring gear 641. The gear 642 is rotatably connected to the placement cavity 621. The gear 642 and the ring gear 641 maintains a meshing state, the sixteen clamping blocks 643 and the sixteen linkage blocks 644 are evenly divided into four groups of linkage parts, the four groups of linkage parts correspond one to one with the four gears 642, a planar thread groove 645 is provided on the side wall of the gear 642, the four linkage blocks 644 of the linkage part are distributed circumferentially along the axis of the gear 642, the linkage block 644 is located in the planar thread groove 645, the four clamping blocks 643 of the linkage part are evenly distributed circumferentially along the axis of the gear 642, the clamping blocks 643 are slidably connected to the placement cavity 621 along the radial direction of the gear 642, the four linkage blocks 644 correspond one to one with the four clamping blocks 643, the linkage blocks 644 are fixedly arranged on the clamping blocks 643, an annular groove 631 is provided on the circumferential side of the limiting column 63, and the clamping blocks 643 are used to engage with the annular groove 631.

[0036] Reference Figure 3 and Figure 4The reset member 65 includes a gripping block 651, four clamping columns 652, four reset springs 653 and four guide columns 654. The gripping block 651 is located along the quick release plate 62 away from the saw blade 23. The gripping block 651 is slidably connected to the quick release plate 62 along the axis direction of the quick release plate 62. The four guide columns 654 are evenly distributed along the axis of the quick release plate 62. The length of the guide column 654 is parallel to the axis of the quick release plate 62. One end of the guide column 654 is fixedly arranged on the gripping block 651. The four reset springs 653 correspond to the four guide columns 654 one by one. The reset springs 653 are sleeved on the guide columns 65 4, one end of the return spring 653 is fixedly arranged on the guide column 654, and the other end of the return spring 653 is fixedly arranged on the quick release plate 62. The four clamping columns 652 are evenly distributed along the circumferential direction of the axis of the quick release plate 62, and the length direction of the clamping column 652 is parallel to the length direction of the guide column 654. One end of the clamping column 652 is fixedly arranged on the gripping block 651, and the gear ring 641 is provided with four clamping grooves 646. The clamping column 652 passes through the quick release plate 62 and is clamped with the four clamping grooves 646. The gripping block 651 is circumferentially provided with gripping grooves 655, which are convenient for the staff to grip.

[0037] Reference Figure 1 and Figure 5 The water spray component 5 is used for spraying water to dissipate heat to the saw blade 23. The water spray component 5 includes a water tank 51, a water pump 52 and a water pipe 53. The water tank 51 is fixedly arranged on the upper end surface of the frame 1, one end of the water pipe 53 is fixedly arranged on the side wall of the water tank 51, and one end of the water pipe 53 is arranged on the adjusting block 31. The water outlet direction of the water pipe 53 is toward the saw blade 23. The water pump 52 is fixedly arranged on the water pipe 53. The water pump 52 is used to pump the water in the water tank 51 into the water pipe 53. The water pipe 53 is made of a hose material.

[0038] The implementation principle of a seam cutter for road construction in the embodiment of the present application is as follows: the position of the saw blade 23 is adjusted according to the depth of the seam cut required for the road surface; by rotating the turntable 36, the turntable 36 drives the adjusting screw 32 to rotate, and the adjusting screw 32 drives the adjusting block 31 to move in the vertical direction. At this time, the adjusting screw 32 will drive the worm 33 to rotate, the worm 33 drives the worm wheel 34 to rotate, and the worm wheel 34 drives the matching screw 35 to rotate, and the matching screw 35 drives the counterweight block 4 to move, thereby changing the center of gravity position of the seam cutter and reducing the situation where the seam cutter tilts during the seam cutting process. When the matching block moves, the guide plate 37 also moves with the matching block. When the guide plate 37 is clamped in the cut road surface, the guide plate 37 and the saw blade 23 are located in the same plane, so that the seam straightness is better. During the seam cutting process of the saw blade 23, the water spraying member 5 is used to spray water to the saw blade 23 to reduce the temperature of the saw blade 23 when cutting the seam.

[0039] After long-term use, the saw blade 23 will wear out and need to be replaced in time. The holding block 651 can be held in the holding groove 655 to overcome the elastic force of the reset spring 653 and move in the direction away from the quick-release plate 62, so that the clamping column 652 disengages from the clamping groove 646 on the gear ring 641. Then, the quick-release plate 62 is moved in the direction away from the saw blade 23. The quick-release plate 62 moves relative to the penetration column 61, and the threaded groove 611 on the penetration column 61 cooperates with the thread on the gear ring 641. The rotation of the gear ring 641 drives the gear 642 to rotate, and the gear 642 drives the four linkage blocks 644 to move, and the four clamping blocks 643 disengage from the annular groove 631 of the limiting column 63. The quick-release plate 62 can be removed from the mounting plate 22, so that the saw blade 23 can be replaced. Then, the quick-release plate 62 is installed on the mounting plate 22 through the above operation, and the saw blade 23 is clamped between the mounting plate 22 and the quick-release plate 62.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A seam cutting machine for road construction, characterized in that: The invention comprises a frame (1), a cutting assembly (2) for cutting seams on a road surface, an adjusting member (3) and a counterweight (4), wherein the cutting assembly (2) is slidably connected to the frame (1) in a vertical direction, and the counterweight (4) is slidably connected to the frame (1), and when the cutting assembly (2) moves in a vertical direction, the adjusting member (3) is used to drive the counterweight (4) to move in the direction of the orthographic projection of the cutting assembly (2).

2. A seam cutting machine for road construction according to claim 1, characterized in that: The adjusting member (3) comprises an adjusting block (31), an adjusting screw (32), a worm (33), a worm wheel (34) and a matching screw (35); the adjusting block (31) is slidably connected to the frame (1) in a vertical direction; the cutting assembly (2) is arranged on the adjusting block (31); the length direction of the adjusting screw (32) is parallel to the sliding direction of the cutting assembly (2); the adjusting screw (32) is rotatably connected to the frame (1); the adjusting block (31) is threadedly connected to the frame (1) On the adjusting screw (32), the worm (33) is coaxially arranged with the adjusting screw (32), the worm (33) is arranged on the adjusting screw (32), the length direction of the matching screw (35) is parallel to the sliding direction of the counterweight (4), the matching screw (35) is rotatably connected to the frame (1), the counterweight (4) is threadedly connected to the matching screw (35), the worm wheel (34) is arranged on the matching screw (35), and the worm wheel (34) is meshed with the worm (33).

3. A seam cutting machine for road construction according to claim 2, characterized in that: The adjusting block (31) is provided with a guide disk (37) for being engaged in the slit.

4. A seam cutting machine for road construction according to claim 2, characterized in that: The cutting assembly (2) comprises a slitting motor (21), a mounting plate (22) and a saw blade (23); the slitting motor (21) is arranged on the adjustment block (31); the mounting plate (22) is arranged on an output shaft of the slitting motor (21); and the saw blade (23) is arranged on the mounting plate (22).

5. A seam cutting machine for road construction according to claim 4, characterized in that: A quick-release assembly (6) for disassembling the saw blade (23) is arranged on the mounting plate (22), the quick-release assembly (6) comprising a penetration column (61), a quick-release plate (62), a limiting column (63) and a clamping member (64), the penetration column (61) being arranged on the mounting plate (22), the length of the limiting column (63) being parallel to the length direction of the penetration column (61), the limiting column (63) being eccentrically arranged on the mounting plate (22), a penetration hole (231) for the penetration column (61) being arranged on the saw blade (23), a limiting hole (232) for the limiting column (63) being arranged on the saw blade (23), the quick-release plate (62) being in contact with a side wall of the saw blade (23) facing away from the mounting plate (22), the clamping member (64) being arranged on the quick-release plate (62), and the clamping member (64) being used to clamp the limiting column.

6. A seam cutting machine for road construction according to claim 5, characterized in that: The clamping member (64) comprises a gear ring (641), a gear (642), a clamping block (643) and a linkage block (644); the outer wall of the penetration column (61) is provided with a spiral groove; the gear ring (641) is rotatably connected to the quick-release plate (62); the inner wall of the gear ring (641) is provided with a thread adapted to the penetration column (61); the gear (642) is coaxially arranged with the limiting column (63); the gear (642) is rotatably connected to the quick-release plate (62); The gear (642) is meshed with the gear ring (641) on the plate (62), a planar spiral groove is provided on the gear (642), the clamping block (643) is slidably connected to the quick-release plate (62) along the radial direction of the gear (642), the linkage block (644) is arranged on the clamping block (643), the linkage block (644) is located in the planar spiral groove, and an annular groove (631) for clamping the clamping block (643) is provided on the limiting column (63).

7. A seam cutting machine for road construction according to claim 6, characterized in that: The quick-release assembly (6) further comprises a reset member (65), the reset member (65) comprising a gripping block (651), a clamping column (652) and a reset spring (653), the gripping block (651) being slidably connected to the quick-release plate (62) in a direction approaching or moving away from the penetration column (61), the clamping column (652) being arranged on the gripping block (651), the gear ring (641) being provided with a clamping groove (646) for clamping the clamping column (652), and the reset spring (653) being used for keeping the clamping column (652) clamped in the clamping groove (646).

8. A seam cutting machine for road construction according to claim 7, characterized in that: The gripping block (651) is provided with a gripping groove (655) for a staff member to grip.

9. A seam cutting machine for road construction according to claim 4, characterized in that: The frame (1) is also provided with a water spray component (5) for dissipating heat from the saw blade (23). The water spray component (5) comprises a water tank (51), a water pump (52) and a water pipe (53). The water tank (51) is provided on the frame (1). One end of the water pipe (53) is provided on the water tank (51). The other end of the water pipe (53) faces the saw blade (23). The water pump (52) is used to pump water from the water tank (51) to the water pipe (53).

10. A seam cutting machine for road construction according to claim 9, characterized in that: The water pipe (53) is arranged on the regulating block (31), and the water pipe (53) is a hose.

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