Joint cutting apparatus for concrete pavement construction

Abstract

The application discloses a joint cutting equipment for concrete pavement construction, which comprises a machine body, a chassis arranged on the machine body, a turnover seat arranged above the chassis, a mounting seat arranged above the turnover seat, a protection assembly arranged between the mounting seat and the turnover seat, a plurality of buffer springs and protection clamping blocks, a plurality of symmetrical and mutually matched rectangular grooves arranged on the upper side of the turnover seat and the lower side of the mounting seat, and the two ends of the plurality of buffer springs are fixedly connected with the turnover seat and the mounting seat respectively. The joint cutting equipment for concrete pavement construction can buffer the contact between the saw blade and the concrete pavement when the saw blade is damaged in the joint cutting operation, thereby reducing the damage risk of the saw blade, prolonging the service life of the joint cutting equipment, avoiding the damage of the saw blade due to non-standard operation or the excessive local hardness of the concrete pavement, and affecting the overall process of the joint cutting operation, and has a good application prospect.

Description

Technical Field

[0001] This invention relates to the field of road construction equipment technology, and to a cutting device for concrete pavement construction, particularly a cutting device for concrete pavement construction with a saw blade that is not easily damaged, has good durability, and a long service life. Background Technology

[0002] Highways refer to roads that connect cities, urban and rural areas, villages and industrial and mining bases, built in accordance with national technical standards, and inspected and approved by the highway authorities. They include expressways, Class I highways, Class II highways, Class III highways and Class IV highways. According to the pavement structure type, they can be divided into three categories: asphalt pavement, concrete pavement and block pavement.

[0003] During the construction of concrete roads, gaps need to be left or cut at regular intervals to avoid thermal expansion and contraction, preventing road surface cracking due to shrinkage in winter and road surface bulging due to obstructed expansion in summer. Cutting concrete pavements presents problems such as excessive dust and scattered gravel. To address these issues, CN202210555467.7 discloses a cutting device for cement road construction, CN 202222040980.0 discloses a cutting machine for road construction, and CN 202022449154.2 discloses a cutting machine for road construction. While these devices can alleviate problems such as excessive dust and scattered gravel to some extent, improper operation or special road conditions can easily damage the saw blades during cutting operations, reducing the overall lifespan of the equipment and affecting the construction progress.

[0004] Therefore, developing a cutting device for concrete pavement construction with saw blades that are not easily damaged, have good durability, and a long service life is of great practical significance. Summary of the Invention

[0005] Due to the aforementioned defects in the existing technology, the present invention provides a concrete pavement cutting device with a saw blade that is not easily damaged, has good durability, and a long service life, overcoming the defects of existing highway construction cutting machines where the saw blade is easily damaged, has poor durability, and a short service life.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A joint cutting device for concrete pavement construction includes a machine body, a base frame on the machine body, a tilting seat above the base frame, a mounting seat above the tilting seat, and a protective component between the mounting seat and the tilting seat. The protective component includes multiple buffer springs and a protective block. Symmetrical rectangular grooves are formed on the upper side of the tilting seat and the lower side of the mounting seat. Multiple buffer springs are located inside the multiple rectangular grooves, and their two ends are fixedly connected to the tilting seat and the mounting seat, respectively. The mounting seat has two symmetrical circular holes, and a limit rod is movably connected inside the circular holes. The bottom end of the limit rod is fixedly connected to the tilting seat. Two buffer springs near the machine body are sleeved on the outside of the two limit rods. A rectangular hole is formed on the tilting seat, and the protective block is movably connected to the rectangular hole. A reset groove is provided on one side of the protective block, and a limit spring is fixedly connected between the protective block and the inner wall of the rectangular hole of the tilting seat. A side-protruding limit block is fixedly connected to the side of the mounting seat near the protective block, and the side-protruding limit block is in contact with the protective block.

[0008] By incorporating protective components, the saw blade can be buffered from contact with the concrete pavement during cutting operations when there is a risk of damage. This reduces the risk of saw blade damage, extends the service life of the cutting equipment, and prevents saw blade damage caused by improper operation or excessive local hardness of the concrete pavement, thus avoiding disruption to the overall cutting process.

[0009] As a preferred technical solution:

[0010] As described above, a joint cutting device for concrete pavement construction has a diesel engine fixedly connected to the upper side of the mounting base, a front box provided on the mounting base, a counterweight fixedly connected to the lower side of the mounting base, and a counterweight arrangement hole provided on the flipping base, with the counterweight located inside the counterweight arrangement hole.

[0011] As described above, a joint cutting device for concrete pavement construction has a hydraulic cylinder mounting slot on the upper side of the base frame. A hydraulic cylinder is fixedly connected inside the hydraulic cylinder mounting slot. A connecting block is provided at the top of the hydraulic cylinder. The connecting block is movably connected to the tilting seat. Three sets of symmetrical insertion holes are provided on the side of the machine body away from the diesel engine. A set of symmetrical handles is movably connected inside the three sets of insertion holes. Adjustment holes are provided on all three sets of insertion holes. A fixing rod is provided in the adjustment hole of the insertion hole movably connected to the handle.

[0012] By incorporating counterweights and hydraulic cylinders, the counterweights increase the overall mass of the mounting base, thereby ensuring the normal cutting operation of the cutting equipment on the mounting base; the hydraulic cylinders are used to adjust the angle of the tilting base to meet the cutting needs of different depths and improve the applicability of the device.

[0013] As described above, a joint cutting device for concrete pavement construction has a side cover on one side of the diesel engine, which is fixedly connected to the mounting base. The output end of the diesel engine is connected to a drive wheel via a coupling. A rotating shaft is movably connected inside the front gearbox, and a traction wheel is fixedly connected to the outside of the rotating shaft. Both the traction wheel and the drive wheel are located inside the side cover. A first belt is provided between the drive wheel and the traction wheel, and mounting discs are provided at both ends of the rotating shaft.

[0014] As described above, a cutting device for concrete pavement construction has a saw blade fixedly connected to the mounting plate, an outer sheath provided on the outside of the saw blade, a mounting plate fixedly connected to the outer sheath, and mounting holes provided on both sides of the machine body. The outer sheath is installed on the mounting hole on one side of the machine body.

[0015] As described above, a joint cutting device for concrete pavement construction has multiple circumferentially spaced blocking plates inside the outer sheath. The blocking plates are arranged between the saw blade and the inner wall of the outer sheath, and the blocking plates are movably connected to the inner walls on both sides of the outer sheath. Furthermore, a connecting spring is fixedly connected between the multiple blocking plates.

[0016] Equipped with an outer sheath, baffles, and connecting springs, the saw blade generates a large amount of dust and flying solid particles when cutting concrete pavement. The solid particles enter the outer sheath and collide with multiple baffles inside. The baffles flip and cause the connecting springs to undergo elastic deformation, reducing the kinetic energy of the solid particles and accelerating their fall, thereby preventing solid particles from flying and causing injury to personnel.

[0017] As described above, a joint cutting device for concrete pavement construction includes a cooling water assembly on its outer sheath. The cooling water assembly includes a connector and a water spray box. The connector is fixedly connected to the outer wall of the outer sheath. A water inlet pipe is provided on the upper side of the connector, and an arc-shaped mounting hole is provided on the outer sheath. The arc-shaped mounting hole is located above multiple blocking plates. The water spray box is fixedly connected to the inner wall of the arc-shaped mounting hole. The connector and the water spray box are connected by a flexible hose. Multiple spraying grooves are provided on the side of the water spray box near the blocking plates.

[0018] By incorporating a cooling water system, the saw blade can be cooled and de-temperatured during cutting by spraying water, preventing damage caused by excessive heat generated during high-speed cutting. At the same time, the top-down spraying process can assist in dust suppression, preventing a large amount of dust generated during cutting from dispersing into the air and affecting the health of operators.

[0019] As described above, a joint cutting device for concrete pavement construction has a circular hole on its outer sheath, an auxiliary pipe is fixedly connected inside the circular hole, the auxiliary pipe is connected to the connector via a flexible hose, and an external auxiliary component is provided inside the auxiliary pipe.

[0020] As described above, a joint cutting device for concrete pavement construction includes an external auxiliary component comprising a shaft, a suction fan, and a spray head. An internal support frame is installed inside the auxiliary pipe. The shaft is movably connected to the internal support frame. The suction fan is fixedly connected to the top end of the shaft, and the spray head is fixedly connected to the bottom end of the shaft. A spiral blade is installed on the shaft, located between the internal support frame and the spray head. A linkage wheel is fixedly connected to the outside of the shaft, located between the suction fan and the internal support frame. A micro motor is installed outside the auxiliary pipe, fixedly connected to an outer sheath. The output end of the micro motor is connected to a rotating rod via a coupling. A drive wheel is fixedly connected to the top end of the rotating rod, and a second belt is installed between the drive wheel and the linkage wheel.

[0021] By incorporating external auxiliary components, external air can be drawn into the outer sheath to form a counter-current airflow, reducing the speed of dust generated by the saw blade and thus improving dust settling efficiency. Simultaneously, the spray head impacts water flow to form scattered water droplets, increasing the contact with dust and further enhancing the dust suppression effect.

[0022] The above technical solution is only one feasible technical solution of the present invention. The scope of protection of the present invention is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0023] The above invention has the following advantages or beneficial effects:

[0024] (1) The concrete pavement construction cutting device of the present invention has a reasonable structural design. The presence of protective components can buffer the contact between the saw blade and the concrete pavement, reduce the risk of damage to the saw blade, improve the service life of the cutting device, and avoid damage to the saw blade caused by improper operation or excessive local hardness of the concrete pavement, which would affect the overall progress of the cutting operation.

[0025] (2) The addition of cooling water components and external auxiliary components to the cutting equipment for concrete pavement construction of the present invention greatly improves the dust reduction effect and has good application prospects. Attached Figure Description

[0026] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; the emphasis is on illustrating the gist of the invention.

[0027] Figure 1 This is a schematic diagram of the overall structure of the joint cutting device for concrete pavement construction according to the present invention.

[0028] Figure 2 This is a partial cross-sectional structural diagram of the concrete pavement construction joint cutting device of the present invention.

[0029] Figure 3 This is a schematic diagram of the structure of the protective component of the present invention;

[0030] Figure 4 This is a schematic diagram of the base frame of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the outer sheath of the present invention;

[0032] Figure 6 This is a schematic diagram of the cooling water assembly of the present invention;

[0033] Figure 7 This is a schematic diagram of the external auxiliary components of the present invention;

[0034] Labels in the diagram: 1. Machine body; 2. Base frame; 3. Tilting seat; 4. Mounting seat; 5. Protective components; 501. Buffer spring; 502. Protective locking block; 503. Limiting rod; 504. Reset pull groove; 505. Limiting spring; 506. Side protruding limiting block; 6. Diesel engine; 7. Counterweight; 8. Front box; 9. Casters; 10. Hydraulic cylinder; 11. Handle; 12. Adjustment hole; 13. Fixing rod; 14. Side cover; 15. Drive wheel; 16. Shaft; 17. Traction wheel; 18. First belt; 19. Mounting plate; 20. Saw 21. Outer sleeve; 22. Mounting plate; 23. Baffle plate; 24. Connecting spring; 25. Cooling water assembly; 2501. Intermediate connector; 2502. Spray box; 2503. Water inlet pipe; 2504. Spray tank; 26. Auxiliary pipe; 27. External auxiliary components; 2701. Shaft; 2702. Suction fan; 2703. Spray head; 2704. Inner support frame; 2705. Spiral blade; 2706. Linkage wheel; 2707. Micro motor; 2708. Rotating rod; 2709. Drive wheel; 2710. Second belt. Detailed Implementation

[0035] The structure of the present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0036] Example 1

[0037] A type of joint cutting equipment for concrete pavement construction, such as Figures 1-3As shown, the device includes a body 1, a base frame 2 mounted on the body 1, a tilting seat 3 mounted above the base frame 2, a mounting base 4 mounted above the tilting seat 3, and a protective assembly 5 between the mounting base 4 and the tilting seat 3. The protective assembly 5 includes multiple buffer springs 501 and protective blocks 502. Symmetrical rectangular slots are provided on the upper side of the tilting seat 3 and the lower side of the mounting base 4. The multiple buffer springs 501 are located inside the multiple rectangular slots, and their two ends are bolted to the tilting seat 3 and the mounting base 4, respectively. The mounting base 4 has two symmetrical circular holes, and the holes are used for inserting... A limit rod 503 is provided, and the bottom end of the limit rod 503 is connected to the flip base 3 by bolts. Two buffer springs 501 close to the body 1 are sleeved on the outside of the two limit rods 503. A rectangular hole is provided on the flip base 3. The protective block 502 is slidably connected to the rectangular hole. A reset pull groove 504 is provided on one side of the protective block 502. A limit spring 505 is bolted between the protective block 502 and the inner wall of the rectangular hole of the flip base 3. A side protrusion limit block 506 is bolted to the side of the mounting base 4 close to the protective block 502. The side protrusion limit block 506 is in contact with the protective block 502.

[0038] Specifically, during the cutting operation, when the cutting is not standardized (too fast or too deep) or the concrete pavement has excessive local hardness (due to the presence of hard stones or debris), the cutting device on the mounting base 4 will be forced to move the mounting base 4 upward away from the flipping base 3. The buffer spring 501 will undergo elastic deformation, providing a buffer for the cutting device on the mounting base 4, thereby reducing the contact between the saw blade 20 and the concrete pavement. When the mounting base 4 moves upward too much (indicating that the saw blade 20 is subjected to excessive force during cutting, posing a risk of damage), the side protrusion limiting block 506 will move above the protective block 502. Under the elastic force of the limiting spring 505, the protective block 502 will extend to support the side protrusion limiting block 506, raising the overall position of the mounting base 4. The cutting device will move away from the working depth, allowing the operator to observe and analyze the cutting device and the pavement condition. Then, the reset pull groove 504 will be used to reset the mounting base 4, and the cutting operation will continue.

[0039] In specific application scenarios, the protective component 5 is suitable for protecting the cutting equipment during the cutting operation. That is, the protective component 5 can buffer the contact between the saw blade 20 and the concrete pavement when there is a risk of damage to the saw blade 20 during the cutting operation, reduce the risk of damage to the saw blade 20, improve the service life of the cutting equipment, and avoid damage to the saw blade 20 caused by improper operation or excessive local hardness of the concrete pavement, which would affect the overall progress of the cutting operation.

[0040] Reference Figure 1 , Figure 2 and Figure 4The upper side of the mounting base 4 is bolted to a diesel engine 6. A front box 8 is installed on the mounting base 4. A counterweight 7 is bolted to the lower side of the mounting base 4. A counterweight arrangement hole is opened on the tilting base 3, and the counterweight 7 is located inside the counterweight arrangement hole. A moving wheel 9 is installed on the base frame 2. A hydraulic cylinder mounting groove is opened on the upper side of the base frame 2. A hydraulic cylinder 10 is bolted to the inside of the hydraulic cylinder mounting groove. A connecting block is installed at the top of the hydraulic cylinder 10. The connecting block and the tilting base 3 are rotatably connected by a bearing. Three sets of symmetrical insertion holes are opened on the side of the body 1 away from the diesel engine 6. A set of symmetrical handles 11 are inserted into the three sets of insertion holes. Adjustment holes 12 are opened on all three sets of insertion holes. A fixing rod 13 is installed in the adjustment hole 12 of the insertion hole where the handle 11 is inserted.

[0041] Specifically, before the cutting operation, the height of the two handles 11 is adjusted according to the operator's height and usage habits, that is, the position of the handles 11 in the insertion hole is changed, and they are fixed by the fixing rod 13 to improve the operator's comfort during the cutting operation. Then, according to the cutting depth requirements on site, the hydraulic cylinder 10 is activated to adjust the flipping angle of the flipping seat 3, thereby changing the height of the cutting equipment on the mounting base 4 to meet the actual cutting depth requirements. The counterweight 7 can increase the overall mass of the mounting base 4, thereby ensuring the normal cutting operation of the cutting equipment on the mounting base 4. The angle of the flipping seat 3 is adjusted by the hydraulic cylinder 10 to meet the cutting depth requirements and improve the applicability of the device.

[0042] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 A side cover 14 is provided on one side of the diesel engine 6. The side cover 14 is bolted to the mounting base 4. The output end of the diesel engine 6 is connected to a drive wheel 15 via a coupling. A rotating shaft 16 is rotatably connected inside the front gearbox 8 via bearings. A traction wheel 17 is bolted to the outside of the rotating shaft 16. Both the traction wheel 17 and the drive wheel 15 are located inside the side cover 14. A first belt 18 is provided between the drive wheel 15 and the traction wheel 17. Mounting discs 19 are provided at both ends of the rotating shaft 16. A saw blade 2 is bolted to the mounting disc 19. 0. The saw blade 20 is provided with an outer sheath 21. The outer sheath 21 is connected to a mounting plate 22 by bolts. Mounting holes are provided on both sides of the machine body 1. The outer sheath 21 is connected to the mounting hole on one side of the machine body 1 by bolts. The outer sheath 21 is provided with multiple circumferentially spaced blocking plates 23. The blocking plates 23 are located between the saw blade 20 and the inner wall of the outer sheath 21. The blocking plates 23 and the inner walls on both sides of the outer sheath 21 are rotatably connected by bearings. The multiple blocking plates 23 are connected to each other by bolts with connecting springs 24.

[0043] Specifically, during the cutting process, the diesel engine 6 drives the drive wheel 15 to rotate, and the drive wheel 15 drives the shaft 16 to rotate via a belt, thereby rotating the saw blade 20 located on the mounting plate 19 to perform the cutting operation. During the cutting operation, the saw blade 20 will generate a large amount of dust and flying solid particles when cutting the concrete pavement. The solid particles will enter the outer sheath 21 and collide with multiple internal baffles 23. The baffles 23 will flip and drive the connecting spring 24 to undergo elastic deformation, reducing the kinetic energy of the solid particles and accelerating the falling of the solid particles, thereby preventing solid particles from flying and causing injury to personnel.

[0044] Reference Figure 5 and Figure 6 The outer sheath 21 is provided with a cooling water assembly 25. The cooling water assembly 25 includes a connector 2501 and a water spray box 2502. The connector 2501 is connected to the outer wall of the outer sheath 21 by bolts. A water inlet pipe 2503 is provided on the upper side of the connector 2501. An arc-shaped mounting hole is provided on the outer sheath 21. The arc-shaped mounting hole is located above multiple baffles 23. The water spray box 2502 is connected to the inner wall of the arc-shaped mounting hole by bolts. The connector 2501 and the water spray box 2502 are connected by a hose. Multiple liquid spraying grooves 2504 are provided on the side of the water spray box 2502 near the baffles 23.

[0045] Specifically, before the cutting operation, the external water supply pipe is connected to the water inlet pipe 2503. During the entire cutting operation, water enters from the water inlet pipe 2503 and falls from the water spraying tank 2504 under the water spraying box 2502 to assist in cooling the saw blade 20 inside the outer sheath 21. At the same time, during the downward water spraying process, the water flow will come into contact with the dust inside the outer sheath 21 after cutting to assist in dust reduction.

[0046] In specific application scenarios, the cooling water assembly 25 is suitable for cooling the saw blade 20 during the cutting process. The cooling water assembly 25 can cool the saw blade 20 by spraying water during cutting, so as to avoid the saw blade 20 from generating a lot of heat during high-speed cutting and causing damage to the saw blade 20. At the same time, the top-down spraying process can help to reduce dust, so as to prevent a lot of dust generated during cutting from being dispersed in the air and affecting the health of the operators.

[0047] Reference Figure 5 , Figure 6 and Figure 7The outer sheath 21 has a circular hole, and an auxiliary tube 26 is bolted inside the circular hole. The auxiliary tube 26 is connected to the connector 2501 via a flexible hose, and an external auxiliary component 27 is installed inside the auxiliary tube 26. The external auxiliary component 27 includes a shaft 2701, a suction fan 2702, and a spray head 2703. An inner support frame 2704 is installed inside the auxiliary tube 26. The shaft 2701 and the inner support frame 2704 are rotatably connected via bearings. The suction fan 2702 is bolted to the top end of the shaft 2701, and the spray head 2703 is bolted to the bottom end of the shaft 2701. A spiral is provided on the shaft 2701. The blade 2705, the spiral blade 2705 is located between the inner support frame 2704 and the spray head 2703. The shaft 2701 is connected to the outside of the linkage wheel 2706 by bolts. The linkage wheel 2706 is located between the suction fan 2702 and the inner support frame 2704. The auxiliary pipe 26 is equipped with a micro motor 2707. The micro motor 2707 is connected to the outer sheath 21 by bolts. The output end of the micro motor 2707 is connected to the rotating rod 2708 by a coupling. The top of the rotating rod 2708 is connected to the drive wheel 2709 by bolts. A second belt 2710 is provided between the drive wheel 2709 and the linkage wheel 2706.

[0048] Specifically, during the cutting operation, the micro motor 2707 drives the shaft 2701 to rotate, and the suction fan 2702 draws external air into the outer sheath 21, so that the air drawn in and the dust generated by the saw blade 20 are offset, reducing the speed of the dust. At the same time, some water at the connector 2501 is delivered to the auxiliary pipe 26, and after the spiral blade 2705 moves up and down, it comes into contact with and impacts the spray head 2703, so that the water flow forms scattered water droplets, increasing the contact effect with the dust inside the outer sheath 21.

[0049] In specific application scenarios, the external auxiliary component 27 is suitable for dust suppression during the cutting process. The external auxiliary component 27 can draw external gas into the outer sheath 21 to form a counter-current airflow, which reduces the speed of dust generated by the saw blade 20 cutting, thereby improving the efficiency of dust falling. At the same time, the spray head 2703 uses water flow to impact and form scattered water droplets, which increases the degree of contact with dust and further enhances the dust suppression effect.

[0050] Working principle: Before cutting, adjust the height of the two handles 11 according to the operator's height and usage habits, that is, change the position of the handles 11 in the insertion hole and fix them with the fixing rod 13. Then, according to the cutting depth requirements on site, start the hydraulic cylinder 10, adjust the flipping angle of the flipping seat 3, change the height of the cutting equipment on the mounting seat 4, and thus meet the actual cutting depth requirements.

[0051] During kerf cutting, the diesel engine 6 drives the drive wheel 15 to rotate, and the drive wheel 15 drives the shaft 16 to rotate via a belt, thereby rotating the saw blade 20 located on the mounting plate 19 to perform kerf cutting. Water enters from the water inlet pipe 2503 and falls from the spray tank 2504 under the spray box 2502 to assist in cooling the saw blade 20 inside the outer sheath 21. At the same time, during the downward spraying process, the water flow will come into contact with the dust inside the outer sheath 21 after cutting, assisting in dust reduction. Meanwhile, the micro motor 2707 drives the shaft 2701 to rotate, and the suction fan 2702 draws external air into the outer sheath 21, so that the drawn-in air and the dust driven by the saw blade 20 form a counter-current, reducing the speed of the dust. At the same time, some water at the connector 2501 is delivered to the auxiliary pipe 26, and after the spiral blade 2705 goes up and down, it comes into contact with and impacts the spray head 2703, so that the water flow forms scattered water droplets, increasing the contact effect with the dust inside the outer sheath 21.

[0052] During the cutting operation, if the cutting is not standardized (too fast or too deep) or the concrete pavement has excessive local hardness (due to the presence of hard stones or debris), the cutting device on the mounting base 4 will be forced to move the mounting base 4 upward away from the flipping base 3. The buffer spring 501 will undergo elastic deformation, providing a buffer for the cutting device on the mounting base 4, thereby reducing the contact between the saw blade 20 and the concrete pavement. When the mounting base 4 moves upward too much (indicating that the saw blade 20 is subjected to excessive force during cutting, posing a risk of damage), the side protrusion limiting block 506 will move above the protective block 502. Under the elastic force of the limiting spring 505, the protective block 502 will extend to support the side protrusion limiting block 506, raising the overall position of the mounting base 4. The cutting device will then be removed from the working depth. The operator can observe and analyze the cutting device and the road surface condition, and then use the reset pull groove 504 to reset the mounting base 4 and continue the cutting operation.

[0053] After practical application, it was found that the cutting equipment for concrete pavement construction using the present invention not only has excellent dust reduction effect, but also good durability, and no saw blade damage occurred even after long-term use.

[0054] Those skilled in the art should understand that variations can be implemented by combining existing technology with the above embodiments, which will not be elaborated here. Such variations do not affect the essence of the present invention and will not be elaborated here.

[0055] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the present invention. This does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention's technical solutions still fall within the protection scope of the present invention.

Claims

1. A joint cutting device for concrete pavement construction, comprising a machine body, characterized in that: The machine body is provided with a base frame, and a flip seat is provided above the base frame. A mounting seat is provided above the flip seat, and a protective component is provided between the mounting seat and the flip seat. The protective component includes multiple buffer springs and a protective block. Symmetrical and matching rectangular slots are provided on the upper side of the flip seat and the lower side of the mounting seat. Multiple buffer springs are located inside the multiple rectangular slots. The two ends of the multiple buffer springs are fixedly connected to the flip seat and the mounting seat, respectively. Two symmetrical circular holes are provided on the mounting seat. Limit rods are movably connected inside the circular holes. The bottom ends of the limit rods are fixedly connected to the flip seat. Two buffer springs close to the machine body are sleeved on the outside of the two limit rods. A rectangular hole is provided on the flip seat. The protective block is movably connected to the rectangular hole. A reset pull groove is provided on one side of the protective block. A limit spring is fixedly connected between the protective block and the inner wall of the rectangular hole of the flip seat. A side protrusion limit block is fixedly connected to the side of the mounting seat close to the protective block, and the side protrusion limit block is in contact with the protective block. A diesel engine is fixedly connected to the upper side of the mounting base, a front box is provided on the mounting base, a counterweight is fixedly connected to the lower side of the mounting base, and a counterweight arrangement hole is opened on the flip base, with the counterweight located inside the counterweight arrangement hole. A side cover is provided on one side of the diesel engine, and the side cover is fixedly connected to the mounting base. The output end of the diesel engine is connected to a drive wheel through a coupling. A rotating shaft is movably connected inside the front gearbox, and a traction wheel is fixedly connected to the outside of the rotating shaft. Both the traction wheel and the drive wheel are located inside the side cover. A first belt is provided between the drive wheel and the traction wheel. Mounting discs are provided at both ends of the rotating shaft. A saw blade is fixedly connected to the mounting plate. An outer sheath is provided on the outside of the saw blade. A mounting plate is fixedly connected to the outer sheath. Mounting holes are provided on both sides of the machine body. The outer sheath is fixedly installed on the mounting hole on one side of the machine body. The outer sheath has multiple circumferentially spaced blocking plates inside. The blocking plates are arranged between the saw blade and the inner wall of the outer sheath. The blocking plates and the inner wall of the outer sheath are movably connected, and the multiple blocking plates are fixedly connected by connecting springs.

2. The joint cutting device for concrete pavement construction according to claim 1, characterized in that, The base frame is equipped with casters, and a hydraulic cylinder mounting slot is provided on the upper side of the base frame. A hydraulic cylinder is fixedly connected inside the hydraulic cylinder mounting slot. A connecting block is provided at the top of the hydraulic cylinder. The connecting block is movably connected to the tilting seat. Three sets of symmetrical insertion holes are provided on the side of the machine body away from the diesel engine. A set of symmetrical handles is movably connected inside the three sets of insertion holes. Adjustment holes are provided on all three sets of insertion holes. A fixing rod is provided in the adjustment hole of the insertion hole movably connected to the handle.

3. The joint cutting device for concrete pavement construction according to claim 1, characterized in that, The outer sheath is equipped with a cooling water assembly.

4. A joint cutting device for concrete pavement construction according to claim 3, characterized in that, The cooling water assembly includes a connector and a water distribution box. The connector is fixedly connected to the outer wall of the outer sheath. A water inlet pipe is provided on the upper side of the connector, and an arc-shaped mounting hole is provided on the outer sheath. The arc-shaped mounting hole is located above multiple baffles. The water distribution box is fixedly connected to the inner wall of the arc-shaped mounting hole. The connector and the water distribution box are connected by a flexible hose. Multiple liquid dispensing grooves are provided on the side of the water distribution box near the baffles.

5. A joint cutting device for concrete pavement construction according to claim 4, characterized in that, The outer sheath has a circular hole, and an auxiliary tube is fixedly connected inside the circular hole. The auxiliary tube is connected to the connector via a flexible hose, and an external auxiliary component is installed inside the auxiliary tube.

6. A joint cutting device for concrete pavement construction according to claim 5, characterized in that, The external auxiliary components include a shaft, a suction fan, and a spray head. An internal support frame is installed inside the auxiliary pipe. The shaft is movably connected to the internal support frame. The suction fan is fixedly connected to the top end of the shaft, and the spray head is fixedly connected to the bottom end of the shaft. A spiral blade is installed on the shaft, located between the internal support frame and the spray head. A linkage wheel is fixedly connected to the outside of the shaft, located between the suction fan and the internal support frame. A micro motor is installed outside the auxiliary pipe, fixedly connected to the outer sheath. The output end of the micro motor is connected to a rotating rod via a coupling. A drive wheel is fixedly connected to the top end of the rotating rod, and a second belt is installed between the drive wheel and the linkage wheel.

Images