A cutting machine for road construction and its guiding device

Abstract

This invention relates to the field of road construction equipment technology, specifically to a cutting machine and its guiding device for road construction. The machine includes a cutting machine body, a cutting saw disc, and a power unit. A connecting ring and a power rod are rotatably mounted on the cutting machine body. A dynamic adjustment mechanism is provided between the power rod and the connecting ring. An installation ring is fixed to the connecting ring, and the cutting saw disc is mounted on the installation ring. An oscillation mechanism is located inside the installation ring. The oscillation mechanism includes a linkage component connected to the power rod and an impact component driven by the linkage component. When the cutting saw disc becomes jammed due to roadbed impurities or uneven strength, the dynamic adjustment mechanism responds quickly, triggering a stop post to push out a limit post, causing the power rod to disengage from the rigid transmission of the connecting ring. Simultaneously, the linkage component in the oscillation mechanism drives the impact component, applying high-frequency vibration impact to the cutting saw disc through contact protrusions. This removes jammed impurities without the need for manual disassembly of protective components, significantly shortening troubleshooting time.

Description

Technical Field

[0001] This invention relates to the field of road construction equipment technology, specifically to a cutting machine for road construction and its guiding device. Background Technology

[0002] In road construction, joint cutting machines are essential equipment for cutting expansion joints and construction joints in concrete pavements, and their operating status directly affects the construction progress and pavement quality. Traditional joint cutting machines use power equipment to drive the cutting saw disc to rotate at high speed to complete the cutting. However, in actual operation, due to uneven strength of the subgrade concrete, the presence of hard impurities such as stones, or poor control of the cutting depth, the cutting saw disc is very prone to getting stuck.

[0003] Traditional kerfing machines lack effective automatic response mechanisms. The continuous power from the power equipment is all applied to the jammed part, which can easily cause the kerfing saw disc to break or deform, and may also cause equipment damage. In the current technology, when the kerfing saw disc jams, the operator must first stop the machine immediately, then manually remove the protective parts around the saw disc, and then use tools such as pry bars and hammers to pry and knock on the jammed part in an attempt to remove the jammed impurities or loosen the saw disc. This process is time-consuming and laborious, seriously interrupts the construction process, and leads to a significant decrease in construction efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a cutting machine and its guiding device for road construction, so as to solve the problem that when the cutting saw disc of a traditional cutting machine gets stuck, it lacks a quick escape mechanism, requiring manual handling which is time-consuming and laborious, interrupts the construction process, and significantly reduces the work efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cutting machine for road construction, comprising a cutting machine body, a cutting saw disc and a power device, wherein a connecting ring and a power rotating rod are rotatably arranged on the cutting machine body, and a dynamic adjustment mechanism is provided between the power rotating rod and the connecting ring;

[0006] A mounting ring is fixed on the connecting ring, a kerf saw is mounted on the mounting ring, and an oscillation mechanism is provided inside the mounting ring.

[0007] The oscillation mechanism includes a linkage component connected to the power rotary rod and an impact component driven by the linkage component.

[0008] When the kerf saw disc jams, the dynamic adjustment mechanism disengages the power rod from the connecting ring. The power rod continues to rotate and drives the linkage component, which in turn drives the impact component to apply continuous vibration and impact to the kerf saw disc.

[0009] Preferably, an inner rotating ring is rotatably connected to the inner side of the connecting ring, and a rotating push plate is fixed to the inner rotating ring; a fixed baffle is fixed to the inner side of the connecting ring, and a fixed ring is fixedly connected inside the fixed baffle;

[0010] A connecting spring is fitted onto the fixed ring. When the inner rotating ring rotates, the rotating push plate rotates on the fixed ring and squeezes the connecting spring.

[0011] Preferably, the dynamic adjustment mechanism includes a rotating ring fixed to the power rotating rod; a rotating groove is formed on the inner side of the inner rotating ring, and the rotating ring is rotatably disposed in the rotating groove.

[0012] Preferably, an inner hole is formed in the rotating groove; a sliding groove is provided in the rotating ring, and a limiting post is slidably connected in the sliding groove; a first spring is provided between the limiting post and the bottom wall of the sliding groove.

[0013] The limiting post can extend into the inner hole to lock the rotating ring and the inner rotating ring.

[0014] Preferably, the rotating push plate is slidably connected to a stop post, which can extend into the inner hole and push out the limiting post; one end of the stop post is fixed to a hemisphere, and a second spring is sleeved on the stop post;

[0015] One end of the second spring is connected to the hemisphere, and the other end is connected to the rotating push plate; an arc-shaped baffle is fixed inside the connecting ring. When the hemisphere moves to the arc-shaped baffle, it drives the blocking post to push out the limiting post.

[0016] Preferably, the linkage assembly includes a first bevel gear fixed to one end of the power rotating rod; a second bevel gear meshes with the first bevel gear, and the second bevel gear is fixedly connected to the connecting rotating rod;

[0017] The connecting rod is rotatably mounted on the inner wall of the mounting ring via a fixing frame.

[0018] Preferably, the first bevel gear is fixed coaxially with the power rotating rod; the second bevel gear is fixed coaxially with the connecting rotating rod.

[0019] Preferably, the impact assembly includes a fixing post fixed to the connecting rod and a fixing support plate fixed to the inner wall of the mounting ring; the fixing post is provided with a pushing protrusion;

[0020] A sliding connecting plate is slidably connected inside the fixed support plate; a movable connecting plate is fixed at one end of the sliding connecting plate, and a push plate is fixed at the other end; a third spring is provided between the push plate and the fixed support plate, and a contact protrusion is provided on the push plate;

[0021] The pusher protrusion can push the movable connecting plate to move.

[0022] Preferably, the connecting spring is in a half-compression pre-tightening state during normal cutting; when the cutting saw disc gets stuck, it is further compressed, and after the roadbed loosens, it pushes the rotating push plate to reset.

[0023] Preferably, when the limiting post is pushed out of the inner hole, the first spring stores energy; when the hemisphere is disengaged from the arc-shaped baffle, the first spring pushes the limiting post to re-insert into the inner hole.

[0024] Preferably, the impact end of the contact protrusion is positioned opposite to the side of the kerf saw disc.

[0025] A guiding device for a road cutting machine includes a guide plate and a guide wheel. The guide plate is mounted on the main body of the cutting machine, and the guide wheel is rotatably connected to the guide plate via an axle.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. When the cutting saw disc gets stuck due to roadbed impurities or uneven strength, the dynamic adjustment mechanism can respond quickly, triggering the stop post to push out the limit post, causing the power rod to disengage from the connecting ring in rigid transmission. At the same time, the linkage component in the oscillation mechanism drives the impact component, which applies high-frequency vibration impact to the cutting saw disc through the contact protrusion. The stuck impurities can be removed without manual disassembly of the protective components, significantly shortening the troubleshooting time and ensuring the continuity of construction.

[0028] 2. This invention incorporates an oscillation mechanism. The continuous rotation of the power rod drives the linkage assembly, and the fixed column on the connecting rod drives the push protrusion to periodically push the moving connecting plate. This causes the sliding connecting plate to compress the third spring. Subsequently, under the spring's reset action, the contact protrusion on the push plate applies high-frequency vibration impact to the side of the kerf saw disc. The continuous vibration energy can quickly loosen impurities or roadbed structures stuck in the jammed area. Combined with the reset thrust of the connecting spring, the kerf saw disc can autonomously escape from its predicament, improving fault handling efficiency.

[0029] 3. This invention features a dynamic adjustment mechanism. During normal cutting, the limiting post is embedded in the inner hole to achieve rigid transmission between the power rod and the connecting ring, ensuring a stable output of cutting torque from the kerf saw disc. When the kerf saw disc jams, causing a sudden increase in resistance, the rotating push plate squeezes the connecting spring and drives the hemisphere to contact the arc-shaped baffle, causing the stop post to push out of the limiting post and instantly cutting off the hard power transmission path, thus avoiding overload damage to the saw disc and the rotating rod caused by the continuous output of the power equipment. Attached Figure Description

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0031] Figure 2 This is a schematic diagram of the guide plate structure of the present invention.

[0032] Figure 3 This is a schematic diagram of the connecting ring structure of the present invention.

[0033] Figure 4 This is a schematic diagram of the mounting bracket structure of the present invention.

[0034] Figure 5 This is a schematic diagram of the rotating pusher structure of the present invention.

[0035] Figure 6 This is a schematic diagram of the fixed ring structure of the present invention.

[0036] Figure 7 This is a schematic diagram of the rotating ring structure of the present invention.

[0037] Figure 8 This is a schematic diagram of the sliding groove structure of the present invention.

[0038] Figure 9 This is a schematic diagram of the blocking column structure of the present invention.

[0039] Figure 10 This is a schematic diagram of the first bevel gear structure of the present invention.

[0040] Figure 11 This is a schematic diagram of the fixing frame structure of the present invention.

[0041] Figure 12 This is a schematic diagram of the oscillation mechanism of the present invention.

[0042] Figure 13 This is a schematic diagram of the inner structure of the mounting ring of the present invention.

[0043] In the diagram: 1. Main body of the slitting machine; 2. Slitting saw disc; 3. Power unit; 4. Mounting ring; 5. Connecting ring; 6. Dynamic adjustment mechanism; 7. Vibration mechanism; 8. Power rotating rod; 9. Guide plate; 10. Guide wheel; 11. Inner rotating ring; 12. Rotating push plate; 13. Fixed baffle; 14. Fixed ring; 15. Connecting spring; 16. Bottom wheel; 17. Mounting bracket; 61. Rotating ring; 62. Limiting post; 63. Sliding groove; 64. First spring; 65. Rotating groove 66. Inner hole; 67. Stopping post; 68. Hemisphere; 69. Second spring; 610. Arc-shaped baffle; 71. Linkage assembly; 72. Impact assembly; 711. First bevel gear; 712. Second bevel gear; 713. Connecting rod; 714. Fixing frame; 720. Pushing protrusion; 721. Fixing post; 722. Fixing support plate; 723. Sliding connecting plate; 724. Pushing plate; 725. Contact protrusion; 726. Third spring; 727. Moving connecting plate. Detailed Implementation

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] Please see Figures 1 to 13 This invention provides a technical solution: a cutting machine for road construction, mainly designed to address the problem that the cutting saw disc 2 of traditional cutting machines is prone to jamming and difficult to recover on its own during cutting operations. Through the coordinated operation of the dynamic adjustment mechanism 6 and the oscillation mechanism 7, the cutting saw disc 2 in the equipment can automatically get out of the jammed state and resume normal operation, effectively improving the efficiency of road construction and extending the service life of the equipment. When the cutting saw disc 2 jams due to roadbed impurities or uneven strength, the dynamic adjustment mechanism 6 can respond quickly, triggering the stop column 67 to push out the limit column 62, so that the power rotating rod 8 is disengaged from the rigid transmission of the connecting ring 5. At the same time, the linkage component 71 in the oscillation mechanism 7 drives the impact component 72, which applies high-frequency vibration impact to the cutting saw disc 2 through the contact protrusion 725. The jammed impurities can be removed without manual disassembly of the protective components, significantly shortening the fault handling time and ensuring the continuity of construction.

[0046] The equipment uses the main body 1 of the kerfing machine as its core load-bearing frame. A steering rear wheel is installed at the rear, and bottom wheels 16 with hydraulic lifting function are fitted at the bottom. This facilitates flexible movement, steering, and adjustment of the working height within the construction site. The equipment utilizes existing hydraulic lifting rods and control valve groups. Operators can operate hydraulic handles to extend and retract the bottom wheels 16, allowing the rear of the equipment to be raised when not in operation, lifting the kerfing saw disc 2 off the ground and preventing unnecessary friction damage between the kerfing saw disc 2 and ground debris. Furthermore, adjusting the height of the bottom wheels 16 before operation allows for precise control of the initial cutting depth of the kerfing saw disc 2, improving the ease of operation and working accuracy.

[0047] The main body 1 of the kerfing machine is equipped with a kerfing saw disc 2 and a power device 3. A connecting ring 5 and a power rotating rod 8 are rotatably mounted on the main body 1. The power rotating rod 8 is driven by the power device 3, which is either a diesel engine or an electric motor. This part is existing technology and is not shown in the figure. A dynamic adjustment mechanism 6 is provided between the power rotating rod 8 and the connecting ring 5. The connecting ring 5 is welded and fixed to the mounting ring 4. The kerfing saw disc 2 is assembled and fixed to the mounting bracket 17 on the mounting ring 4 by locking bolts, thereby realizing the cutting operation.

[0048] like Figure 4As shown, an oscillation mechanism 7 is built into the mounting ring 4. This mechanism consists of a linkage component 71 and an impact component 72. The linkage component 71 is connected to the power rotating rod 8 and can transmit power to the impact component 72. When the kerf saw disc 2 gets stuck, the impact component 72 can provide high-frequency vibration impact to help the saw disc get out of trouble. In addition, the kerf saw body 1 is also equipped with a guide device. This device consists of a guide plate 9 that is rotatably mounted on the kerf saw body 1 via a rotating shaft and a guide wheel 10 that is rotatably connected to the guide plate 9 via a wheel axle. Its function is to ensure the straightness of the cutting trajectory and ensure the cutting quality.

[0049] like Figure 5 as well as Figure 6 As shown, an inner rotating ring 11 is rotatably connected to the inner side of the connecting ring 5 via a bearing. Three rotating push plates 12 are welded and fixed on the outer wall of the inner rotating ring 11. A fixed baffle 13 is fixed on the inner side of the connecting ring 5 at a position corresponding to the rotating push plate 12. A fixed ring 14 is welded and fixed inside the fixed baffle 13. A connecting spring 15 is sleeved on the fixed ring 14. One end of the connecting spring 15 abuts against the fixed baffle 13, and the other end contacts the rotating push plate 12. When the equipment is performing normal cutting operations, the connecting spring 15 is in a pre-tightened state of half-compression. This state can ensure the stability of power transmission and reserve elastic potential energy for subsequent reset actions. At this time, the connecting spring 15 is in a half-compression state, generating a stable thrust to ensure the cutting pressure of the kerf saw 2. The equipment moves along the direction guided by the guide device to complete the road kerf cutting operation. In this embodiment, the connecting spring 15 is a high-strength spring to ensure the stability of the thrust. The kerf depth of the kerf saw 2 is 100-200mm.

[0050] like Figure 7 , Figure 8 as well as Figure 9 As shown, the dynamic adjustment mechanism 6 includes a rotating ring 61 welded to the power rotating rod 8. The inner side of the inner rotating ring 11 is provided with a rotating groove 65 that matches the rotating ring 61. The rotating ring 61 can rotate smoothly in the rotating groove 65. Three sliding grooves 63 are evenly provided around the circumference of the rotating ring 61. A limit post 62 is slidably assembled in each sliding groove 63. A first spring 64 is installed between the limit post 62 and the bottom wall of the sliding groove 63. An inner hole 66 is provided at the corresponding position on the inner wall of the rotating groove 65. The limit post 62 extends into the inner hole 66 under the elastic force of the first spring 64, thereby realizing the synchronous rotation and locking of the rotating ring 61 and the inner rotating ring 11. A rigid locking relationship is formed through the column-hole mating structure, thereby realizing the synchronous and non-relative displacement rotation and locking of the rotating ring 61 and the inner rotating ring 11, ensuring the stability of power transmission.

[0051] In this embodiment, the first spring 64 is a high-strength cylindrical helical compression spring made of 60Si2Mn alloy spring steel, which has excellent elastic limit and fatigue resistance. Its designed elastic force is 80-120N. The depth of the limiting post 62 inserted into the inner hole 66 is precisely controlled at 15-20mm. This ensures that the rotating ring 61 and the inner rotating ring 11 form a rigid transmission, avoiding torque fluctuations during the cutting process. It also enables rapid disengagement when the blocking post 67 pushes, preventing unlocking delays due to excessive embedding.

[0052] like Figures 6 to 9 As shown, a stop post 67 is slidably inserted inside the rotating push plate 12. One end of the stop post 67 is fixed to a hemisphere 68, and the other end can extend into the inner hole 66 to push the limiting post 62. A second spring 69 is sleeved on the stop post 67. The two ends of the second spring 69 are respectively hooked to the hanging ring of the hemisphere 68 and the reserved hanging groove of the rotating push plate 12. An arc-shaped baffle 610 is fixed to the inner side of the connecting ring 5. When the hemisphere 68 rotates with the rotating push plate 12 to the arc-shaped baffle, the hemisphere 68 will be stopped. When the plate 610 is in position, the arc-shaped surface of the arc-shaped baffle 610 will squeeze the hemisphere 68, thereby driving the abutment post 67 to move axially, forcing the hemisphere 68 to move towards the rotating push plate 12, squeezing the second spring 69 and pushing the abutment post 67 to push the limiting post 62 out of the inner hole 66, the rotating ring 61 is released from locking with the inner rotating ring 11, the first spring 64 is compressed and stored energy, and the limiting post 62 retracts into the sliding groove 63. At this time, the rotating ring 61 can rotate in the rotating groove 65.

[0053] In this embodiment, the second spring 69 is a medium-strength cylindrical helical compression spring made of 50CrVA spring steel, which has good elastic recovery ability and dimensional stability. Its working spring force is set to 50-70N. When the hemisphere 68 is not in contact with the arc-shaped baffle 610, the second spring 69 is in a naturally extended state, which stably constrains the stop post 67 inside the rotating push plate 12, preventing the stop post 67 from accidentally extending into the inner hole 66 and interfering with normal transmission. When the hemisphere 68 is squeezed by the arc-shaped baffle 610, the second spring 69 can generate a compression stroke of 8-12mm, storing energy through elastic deformation. When the hemisphere 68 is freed from the constraint of the arc-shaped baffle 610, the second spring 69 quickly resets, pushing the stop post 67 to completely withdraw from the inner hole 66, ensuring that the limit post 62 is quickly re-embedded into the inner hole 66 under the action of the first spring 64, realizing the rapid response and precise reset of the dynamic adjustment mechanism 6.

[0054] like Figures 6 to 9As shown, when the hemisphere 68 moves onto the arc-shaped baffle 610, the arc-shaped baffle 610 limits the movement of the hemisphere 68, causing it to move closer to the rotating push plate 12. This compresses the second spring 69 and pushes the stop post 67 to push the limiting post 62 out of the inner hole 66. The rotating ring 61 is released from its lock with the inner rotating ring 11, the first spring 64 is compressed and stores energy, and the limiting post 62 retracts into the sliding groove 63. At this time, the rotating ring 61 can rotate within the rotating groove 65.

[0055] like Figure 11 as well as Figure 12 As shown, the oscillation mechanism 7 is composed of a linkage component 71 and an impact component 72. The linkage component 71 includes a first bevel gear 711 that is coaxially welded and fixed to the power rotating rod 8. The first bevel gear 711 meshes with a second bevel gear 712. The second bevel gear 712 is coaxially welded and fixed to the connecting rotating rod 713. The connecting rotating rod 713 is rotatably mounted on the inner wall of the mounting ring 4 through a fixing bracket 714.

[0056] like Figures 10 to 12 As shown, the impact assembly 72 includes a fixed column 721 welded and fixed to the connecting rotating rod 713. A pushing protrusion 720 is welded and fixed to the outer wall of the fixed column 721. A fixed support plate 722 is welded and fixed to the inner wall of the mounting ring 4. A sliding connecting plate 723 is slidably passed through the fixed support plate 722. One end of the sliding connecting plate 723 is welded and fixed to the moving connecting plate 727, and the other end is welded and fixed to the pushing plate 724. A third spring 726 is installed between the pushing plate 724 and the fixed support plate 722. A contact protrusion 725 is fixed to the side of the pushing plate 724 facing the cutting saw disc 2.

[0057] In this embodiment, the third spring 726 is a high-elasticity cylindrical helical compression spring, made of 55CrSi spring steel that has undergone low-temperature tempering, possessing extremely high elastic modulus and impact resistance. Its designed elastic force is 50-80N. During the operation of the impact assembly 72, when the pushing protrusion 720 pushes the moving connecting plate 727, the spring can compress by 10-15mm to store energy. The stored elastic potential energy is rapidly released the instant the pushing protrusion 720 disengages, driving the pushing plate 724 to cause the contact protrusion 725 to rapidly impact the cutting saw disc 2. This elastic force and stroke parameter ensure that the contact protrusion 725 generates an impact force of 40-50N. Combined with high-frequency impact, this effectively loosens and secures impurities without causing deformation or damage to the cutting saw disc 2 due to excessive impact force, achieving both efficient escape and equipment protection.

[0058] The power lever 8 drives the first bevel gear 711 to rotate, and the first bevel gear 711 drives the meshing second bevel gear 712 and the connecting lever 713 to rotate. The pushing protrusion 720 on the fixed column 721 rotates with the connecting lever 713 and periodically contacts the moving connecting plate 727. When the pushing protrusion 720 contacts the moving connecting plate 727, it pushes the moving connecting plate 727 away from the fixed support plate 722, and then drives the pushing plate 724 to approach the fixed support plate 722 through the sliding connecting plate 723. The third spring 726 is compressed and stores energy. When the pushing protrusion 720 disengages from the moving connecting plate 727, the third spring 726 resets and springs the pushing plate 724 away, so that the contact protrusion 725 collides and contacts the cutting saw disc 2.

[0059] like Figure 2 As shown, the guiding device also plays an important role in the operation of the equipment. The guide wheel 10 is in close contact with the road surface. When the equipment moves, the guide plate 9 rigidly constrains the movement direction of the guide wheel 10 through the wheel axle. By controlling the travel direction of the main body 1 of the cutting machine, the operator can make the guide wheel 10 roll along the preset cutting route. This effectively ensures the construction quality of road expansion joints and construction joints and reduces the risk of road surface cracking in the later stage.

[0060] By incorporating a dynamic adjustment mechanism 6 and an oscillation mechanism 7, rigid transmission between the power rod 8 and the connecting ring 5 is achieved during normal cutting through the insertion of the limiting post 62 into the inner hole 66. This ensures a stable output of cutting torque from the kerf saw disc 2. When the kerf saw disc 2 jams, causing a sudden increase in resistance, the rotating push plate 12 compresses the connecting spring 15 and drives the hemisphere 68 to contact the arc-shaped baffle 610. This causes the stop post 67 to push out of the limiting post 62, instantly cutting off the hard power transmission path and preventing overload damage to the saw disc and the rod caused by the continuous output of the power device 3. The rotating drive linkage component 71 operates, and the fixed column 721 on the connecting rod 713 drives the push protrusion 720 to periodically push the moving connecting plate 727, causing the sliding connecting plate 723 to drive the push plate 724 to compress the third spring 726. Subsequently, under the spring's reset action, the contact protrusion 725 on the push plate 724 applies high-frequency vibration impact to the side of the kerf saw disc 2. The continuous vibration energy can quickly loosen the impurities or roadbed structure in the jammed part. Combined with the reset thrust of the connecting spring 15, the kerf saw disc 2 can autonomously get out of trouble, improving the efficiency of fault handling.

[0061] When the cutting saw disc 2 gets stuck due to roadbed impurities or uneven strength, the dynamic adjustment mechanism 6 can respond quickly, triggering the stop column 67 to push out the limit column 62, causing the power rotating rod 8 to disengage from the connecting ring 5 in rigid transmission. At the same time, the linkage component 71 in the oscillation mechanism 7 drives the impact component 72, which applies high-frequency vibration impact to the cutting saw disc 2 through the contact protrusion 725. The stuck impurities can be removed without manual disassembly of the protective components, significantly shortening the fault handling time and ensuring the continuity of construction.

[0062] In actual use, the power device 3 drives the power rod 8 to rotate. In the initial state, the limit post 62 is inserted into the inner hole 66 to lock the rotating ring 61 and the inner rotating ring 11. The power rod 8 drives the rotating ring 61 and the inner rotating ring 11 to rotate synchronously. The inner rotating ring 11 drives the rotating push plate 12 to rotate on the fixed ring 14. The rotating push plate 12 squeezes the connecting spring 15 and pushes the fixed baffle 13 and the connecting ring 5 to rotate. The connecting ring 5 drives the cutting saw disc 2 to rotate through the mounting ring 4 to achieve normal cutting operation. At this time, the connecting spring 15 is in a half-stroke compression state.

[0063] When the kerf saw disc 2 comes into contact with a hard object or the roadbed resistance suddenly increases, causing it to jam, the kerf saw disc 2, mounting ring 4, and connecting ring 5 will instantly stop rotating. Meanwhile, the inner rotating ring 11 continues to drive the rotating push plate 12 to rotate under the power, further compressing the connecting spring 15. (Refer to...) Figure 6 , Figure 7 as well as Figure 8 During this process, the hemisphere 68 moves onto the arc-shaped baffle 610, forcing the hemisphere 68 to move towards the rotating push plate 12, squeezing the second spring 69 and pushing the stop post 67 to push the limiting post 62 out of the inner hole 66. The rotating ring 61 is released from its lock with the inner rotating ring 11, the first spring 64 is compressed and stores energy, and the limiting post 62 retracts into the sliding groove 63. At this time, the rotating ring 61 can rotate in the rotating groove 65.

[0064] refer to Figure 11 as well as Figure 12 Simultaneously, the power lever 8 drives the first bevel gear 711 to rotate, and the first bevel gear 711 drives the meshing second bevel gear 712 and the connecting lever 713 to rotate. The pushing protrusion 720 on the fixed column 721 rotates with the connecting lever 713 and periodically contacts the moving connecting plate 727. When the pushing protrusion 720 contacts the moving connecting plate 727, it pushes the moving connecting plate 727 away from the fixed support plate 722, and then drives the pushing plate 724 to approach the fixed support plate 722 through the sliding connecting plate 723. The third spring 726 is compressed and stores energy. When the pushing protrusion 720 disengages from the moving connecting plate 727, the third spring 726 resets and springs the pushing plate 724 away, so that the contact protrusion 725 collides with the cutting saw disc 2, forming a high-frequency vibration impact.

[0065] Through continuous collision and vibration, the contact point between the roadbed and the cutting saw disc 2 gradually loosens. After the roadbed loosens, the connecting spring 15 extends and pushes the rotating push plate 12 to reset. The hemisphere 68 is released from the restriction of the arc-shaped baffle 610. The second spring 69 pushes the stop post 67 to reset. The first spring 64 pushes the limit post 62 back into the inner hole 66, locking the rotating ring 61 and the inner rotating ring 11 again. The equipment returns to normal cutting state.

[0066] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0067] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cutting machine for road construction, comprising a cutting machine body, a cutting saw disc, and a power unit, characterized in that: The main body of the cutting machine is rotatably equipped with a connecting ring and a power rotating rod, and a dynamic adjustment mechanism is provided between the power rotating rod and the connecting ring; A mounting ring is fixed on the connecting ring, a kerf saw is mounted on the mounting ring, and an oscillation mechanism is provided inside the mounting ring. The oscillation mechanism includes a linkage component connected to the power rotary rod and an impact component driven by the linkage component. When the cutting saw disc gets stuck, the dynamic adjustment mechanism disengages the power rod from the connecting ring. The power rod continues to rotate and drives the linkage component, which in turn drives the impact component to apply continuous vibration and impact to the cutting saw disc. The inner side of the connecting ring is rotatably connected to an inner rotating ring, and the inner rotating ring is fixed with a rotating push plate; A fixing baffle is fixed inside the connecting ring, and a fixing ring is fixedly connected inside the fixing baffle. A connecting spring is sleeved on the fixing ring. When the inner rotating ring rotates, the rotating push plate rotates on the fixed ring and compresses the connecting spring; The dynamic adjustment mechanism includes a rotating ring fixed on a power rotating rod, and a rotating groove is formed on the inner side of the inner rotating ring, and the rotating ring is rotatably disposed in the rotating groove; An inner hole is provided in the rotating groove, and a sliding groove is provided in the rotating ring, with a limiting post slidably connected in the sliding groove. A first spring is provided between the limiting post and the bottom wall of the sliding groove. The limiting post can extend into the inner hole to lock the rotating ring and the inner rotating ring. The rotating push plate is slidably connected to a stop post, which can extend into the inner hole and push out the limiting post. One end of the stop post is fixed to a hemisphere, and a second spring is sleeved on the stop post. One end of the second spring is connected to the hemisphere, and the other end is connected to the rotating push plate. An arc-shaped baffle is fixed inside the connecting ring. When the hemisphere moves to the arc-shaped baffle, it drives the blocking post to push out of the limiting post. The linkage component includes a first bevel gear fixed to one end of the power rotating rod, a second bevel gear meshing with the first bevel gear, a connecting rotating rod fixedly connected to the second bevel gear, and the connecting rotating rod being rotatably mounted on the inner wall of the mounting ring via a fixing frame. The first bevel gear is fixed coaxially with the power rotating rod, and the second bevel gear is fixed coaxially with the connecting rotating rod. The impact assembly includes a fixed column fixed to the connecting rotating rod and a fixed support plate fixed to the inner wall of the mounting ring, and the fixed column is provided with a pushing protrusion; A sliding connecting plate is slidably connected inside the fixed support plate. A movable connecting plate is fixed at one end of the sliding connecting plate, and a push plate is fixed at the other end. A third spring is provided between the push plate and the fixed support plate. The push plate is provided with a contact protrusion. The push protrusion can push the movable connecting plate to move. The impact end of the contact protrusion is arranged opposite to the side of the kerf saw disc.

2. The cutting machine equipment for road construction according to claim 1, characterized in that: The connecting spring is in a half-compression pre-tightening state during normal cutting, and is further compressed when the cutting saw disc gets stuck, and pushes the rotating push plate to reset after the roadbed loosens.

3. The cutting machine equipment for road construction according to claim 2, characterized in that: When the limiting post is pushed out of the inner hole, the first spring stores energy. When the hemisphere detaches from the arc-shaped baffle, the first spring pushes the limiting post to re-insert into the inner hole.

4. A guiding device for a road cutting machine, applicable to the road cutting machine as described in any one of claims 1-3, characterized in that: It includes a guide plate and a guide wheel. The guide plate is mounted on the body of the cutting machine, and the guide wheel is rotatably connected to the guide plate via a wheel axle.

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