Cutting equipment for pavement maintenance

Abstract

The invention discloses cutting equipment for pavement maintenance, and relates to the field of cutting equipment.The cutting equipment comprises a cutting vehicle, a cutting engine and a cutting power frame are installed on the cutting vehicle, a driving disc is installed on the cutting engine, and two driving rotating frames are rotatably installed on the cutting power frame; a cutting saw is mounted on one driving rotating frame; the device further comprises a hammering obstacle removing device. It needs to be explained that in the cutting process of the cutting vehicle, through continuous lifting of the lifting hammering frame, the two hammering heads hammer and smash obstacles on the road surface, the obstacles are pushed away through the synchronous shoveling plate, it is guaranteed that the cutting saw and the cutting vehicle cannot be blocked by the obstacles, and in addition, if the obstacles cannot be shoveled away, the cutting saw and the cutting vehicle cannot be shoveled away. And when the cutting saw breaks away from the ground, the synchronous shovel plate is stopped from retracting, and then the lifting rotating rod drives the cutting power frame to rotate through the lifting wheel, so that the cutting saw breaks away from the ground, and the problem that the cutting saw makes contact with an obstacle to cause accidents is solved.

Description

Technical Field

[0001] This invention relates to the field of cutting equipment technology, and more particularly to a cutting device for road maintenance. Background Technology

[0002] During road construction, after the concrete hardens, it needs to be cured. During curing, a cutting saw is used to cut the road surface to prevent irregular cracks from forming due to shrinkage during the subsequent hardening process. The cutting saw cuts a certain width and depth into the concrete slab, allowing the concrete to release stress through these gaps when it shrinks, thereby avoiding the formation of larger cracks.

[0003] During cutting, a cutting cart drives a cutting saw to rotate, achieving the purpose of cutting the road surface. However, during the cutting process, because it is still in the construction stage, there are still many impurities or even raised obstacles on the road surface. This causes the cutting cart to be blocked by obstacles during the cutting process, causing it to be lifted up. Since the cutting saw blade is cutting within the road surface, when the cutting cart is lifted and tilted, the cutting saw blade is prone to tilting and misalignment, causing the saw blade to break, or the cutting saw to come into direct contact with obstacles, causing safety accidents during construction. Alternatively, the tilting of the saw blade may cause the road surface to be cut crookedly or the cutting area to be increased, resulting in road surface damage. Summary of the Invention

[0004] The purpose of this invention is to provide a cutting device for road maintenance to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A cutting device for road maintenance includes a cutting vehicle, on which a cutting engine and a cutting power frame are mounted. A drive disc is mounted on the cutting engine. Two drive rotating frames are rotatably mounted on the cutting power frame. A cutting saw is mounted on one of the drive rotating frames. Driven belts are sleeved on the two drive rotating frames. A drive belt is sleeved on one of the drive rotating frames and the drive disc. It also includes a hammer-driven obstacle removal device, which is installed on the cutting vehicle and is used to hammer and break up obstacles on the road surface. The hammer-driven obstacle removal device includes a main support, which is installed on the cutting vehicle. A lifting hammer frame is movably installed on the top side of the main support. Two hammer heads for hammering obstacles are installed on the lifting hammer frame. A telescopic frame is movably installed on one side of the main support. A synchronous shovel plate is installed at the end of the telescopic frame and is used to remove obstacles. The hammer-driven obstacle clearing device is equipped with a depression positioning device, which is inserted into a depression in the road surface to position the cutting vehicle. The depression positioning device includes two ejector seats, which are positioned corresponding to the two hammer heads. The bottom side of the synchronous shovel plate has two ejection slots, and the two ejector seats are movably installed in the two ejection slots respectively. Positioning rotating plates are rotatably installed around the ejector seats. The four positioning rotating plates rotate and unfold to lock the positioning rotating plates into the depression in the road surface.

[0006] Furthermore, in a preferred embodiment of the present invention, the hammer-driven obstacle clearing device further includes a lifting rod, which is rotatably mounted on one side of the main support. A lifting wheel is rotatably mounted on the lifting rod, and the lifting rod rotates by pushing against the cutting power frame through the lifting wheel. An installation shaft is rotatably mounted on the lifting rod, and the installation shaft is mounted on one side of the main support.

[0007] Furthermore, in a preferred embodiment of the present invention, a retraction drive rod is movably mounted on one side of the lifting rod, and the retraction drive rod is mounted on the synchronous shovel plate; The lifting rod has a push hole, and the retraction drive rod has a push shaft rotatably mounted on it, with the push shaft movably installed inside the push hole.

[0008] Furthermore, in a preferred embodiment of the present invention, a vertical lifting groove is provided on one side of the main support, and a transfer lifting frame is slidably installed in the vertical lifting groove, the transfer lifting frame being installed on the lifting hammer frame; A driven rotating rod is installed on one side of the drive rotating frame, and a rotating lifting shaft is rotatably installed on the driven rotating rod. The transfer lifting frame has a movable sliding hole, and the rotating lifting shaft is movably installed in the movable sliding hole.

[0009] Furthermore, in a preferred embodiment of the present invention, a hammer spring is installed inside the main support, and the hammer spring is mounted on the lifting hammer frame; A support spring is installed inside the main support frame, and the support spring is mounted on the telescopic frame.

[0010] Furthermore, in a preferred embodiment of the present invention, the recessed positioning device further includes two auxiliary moving wheels, which are respectively rotatably mounted on the bottom sides of the two ejector seats; A pop-out spring is installed on the top side of the pop-out seat, and the top end of the pop-out spring is installed on the inner wall of the top side of the pop-out slot.

[0011] Furthermore, in a preferred embodiment of the present invention, the positioning plate is provided with a mounting groove, and a positioning shaft is rotatably mounted in the mounting groove, the positioning shaft being mounted on the ejector seat; A positioning torsion spring is installed on the positioning shaft, and the positioning torsion spring is installed on the inner wall of the mounting groove.

[0012] Furthermore, in a preferred embodiment of the present invention, an active extension device is also included, which is installed on the underside of the cutting vehicle and actively extends to provide active support for the cutting vehicle.

[0013] Furthermore, in a preferred embodiment of the present invention, the active extension device includes an extension support frame, and an extension groove is provided on one side of the cutting cart, and the extension support frame is slidably installed in the extension groove; A push-out spring is installed on one side of the extension support frame, and the other end of the push-out spring is installed on the inner wall of the extension slide. A support wheel is rotatably installed on one side of the extension support frame.

[0014] Furthermore, in a preferred embodiment of the present invention, a limiting hole is provided on the bottom inner wall of the extension slide, a locking seat is slidably installed in the limiting hole, a locking groove is provided on the bottom side of the extension support frame, and the locking seat is inserted into the locking groove. An unlocking spring is installed on the locking seat, the unlocking spring is installed on the inner wall of the extension slide, and a follower wheel is rotatably installed on the bottom side of the locking seat.

[0015] The beneficial effects of the cutting device for road maintenance proposed in this invention are: In this invention, by setting up a hammer-driven obstacle removal device, during the cutting process of the cutting vehicle, the continuous lifting and lowering of the lifting hammer frame allows the two hammer heads to hammer and crush obstacles on the road surface, and the obstacles are pushed away by the shovel plate, ensuring that the cutting saw and the cutting vehicle are not blocked by obstacles. If the obstacle cannot be removed, the synchronous shovel plate is blocked and retracts, which drives the support spring to be stressed. The movement of the synchronous shovel plate drives the retraction drive rod to move, which in turn causes the push shaft to push the lifting rod to rotate. At the same time, the push shaft slides in the push hole, and the lifting rod drives the cutting power frame to rotate through the lifting wheel, so that the cutting saw is lifted off the ground, avoiding the problem of the cutting saw coming into contact with obstacles and causing an accident.

[0016] Furthermore, in this invention, by setting up a recess positioning device, if there is a large recess in the ground, the ejector seat will be pushed out of the ejector slot under the ejection force of the ejector spring, so that the ejector seat enters the recess in the road surface. At this time, under the torsional force of the four positioning torsion springs, the four positioning rotating plates will rotate and unfold, and get stuck in the recess in the road surface. At this time, the synchronous shovel plate will be obstructed and retracted, which can drive the retraction drive rod to move. In this way, the lifting rotating rod can drive the cutting power frame to rotate through the lifting wheel, thereby making the cutting saw detach from the ground, avoiding the problem of the cutting vehicle overturning when it encounters a recess, and the cutting saw blade continuously cutting on the road surface, thus further avoiding the occurrence of accidents.

[0017] Furthermore, in this invention, by setting an active extension device, once the cutting cart overturns, the locking seat will pop out and disengage from the locking groove under the rebound force of the unlocking spring. At this time, the extension support frame will be pushed out under the rebound force of the push-out spring, thereby achieving the purpose of actively supporting the cutting cart and preventing the cutting cart from overturning. Attached Figure Description

[0018] Figure 1 A three-dimensional structural schematic diagram of a cutting device for road maintenance provided in an embodiment of the present invention; Figure 2 A bottom view of a cutting device for road maintenance provided in an embodiment of the present invention; Figure 3 A schematic diagram illustrating the connection between the lifting hammer frame and the hammer head, etc., of a cutting device for road maintenance, provided in an embodiment of the present invention; Figure 4 This is a partial cross-sectional view of the connection between the main support and the lifting hammer frame of a cutting device for road maintenance, as provided in an embodiment of the present invention. Figure 5 This is a partial structural diagram illustrating the connection between the driven rotating rod and the transfer lifting frame of a cutting device for road maintenance, as provided in an embodiment of the present invention. Figure 6 A partial structural diagram illustrating the connection between the lifting rotating rod and the retraction drive rod of a cutting device for road maintenance, provided in an embodiment of the present invention; Figure 7 A cross-sectional structural diagram showing the connection between the synchronous shovel plate and the ejector seat, etc., of a cutting device for road maintenance provided in an embodiment of the present invention; Figure 8 This invention provides a cutting device for road surface maintenance. Figure 7 A schematic diagram of the structure of part A; Figure 9This is a schematic diagram illustrating the connection between the ejector seat and the positioning rotating plate of a cutting device for road maintenance, as provided in an embodiment of the present invention. Figure 10 A partial cross-sectional view of the connection between the cutting vehicle and the extension support frame of a cutting device for road maintenance, as provided in an embodiment of the present invention. Figure 11 This is a partial cross-sectional view of the connection between the extension support frame and the locking seat of a cutting device for road maintenance, as provided in an embodiment of the present invention.

[0019] In the diagram: 1-Cutting vehicle; 2-Cutting engine; 3-Cutting power frame; 4-Cutting saw; 5-Drive rotating frame; 6-Driven belt; 7-Drive belt; 8-Drive disc; 9-Hammering obstacle clearing device; 901-Main support; 902-Lifting hammering frame; 903-Hammering head; 904-Telescopic frame; 905-Synchronous shovel; 906-Hammering spring; 907-Supporting spring; 908-Driven rotating rod; 909-Vertical lifting slot; 910-Transfer lifting frame; 911-Rotating lifting shaft; 912-Moving sliding hole; 913-Lifting rotating rod; 914-Lifting wheel; 915-Mounting shaft; 916 - Retraction drive rod; 917- Push hole; 918- Push shaft; 10- Recessed positioning device; 1001- Pop-out seat; 1002- Pop-out groove; 1003- Pop-out spring; 1004- Auxiliary moving wheel; 1005- Positioning rotating plate; 1006- Mounting groove; 1007- Positioning shaft; 1008- Positioning torsion spring; 11- Active extension device; 1101- Extension support frame; 1102- Extension slide; 1103- Push-out spring; 1104- Limiting hole; 1105- Locking seat; 1106- Locking groove; 1107- Unlocking spring; 1108- Support wheel; 1109- Follower wheel. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] Furthermore, in the description of this invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "perpendicular" do not imply that components must be absolutely vertical, but rather that they can be slightly tilted. For example, "vertical" simply means that its direction is more vertical relative to "horizontal," not that the structure must be completely vertical, but can be slightly tilted.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Please refer to the attached instruction manual. Figures 1-11 The present invention provides a cutting device for road maintenance, which includes a cutting vehicle 1, a cutting engine 2 and a cutting power frame 3 installed on the cutting vehicle 1, a drive disc 8 installed on the cutting engine 2, two drive rotating frames 5 rotatably installed on the cutting power frame 3, a cutting saw 4 installed on one drive rotating frame 5, a driven belt 6 sleeved on the two drive rotating frames 5, and a drive belt 7 sleeved on one drive rotating frame 5 and the drive disc 8.

[0027] Further, please refer to the appendix to the instruction manual. Figures 3-6The present invention provides a cutting device for road maintenance, which further includes a hammer-driven obstacle removal device 9. The hammer-driven obstacle removal device 9 is installed on the cutting vehicle 1 and is used to hammer and break up obstacles on the road surface. Specifically, the hammer-driven obstacle removal device 9 includes a main support 901, which is installed on the cutting vehicle 1. A lifting hammer frame 902 is movably installed on the top side of the main support 901. Two hammer heads 903 for hammering obstacles are installed on the lifting hammer frame 902. A telescopic frame 904 is movably installed on one side of the main support 901. A synchronous shovel plate 905 is installed at the end of the telescopic frame 904 and is used to remove obstacles. It should be noted that, in this embodiment of the invention, during the cutting process of the cutting vehicle 1, the continuous lifting and lowering of the lifting hammer frame 902 causes the two hammer heads 903 to hammer and crush the obstacles on the road surface, and the synchronous shovel plate 905 pushes the obstacles away, ensuring that the cutting saw 4 and the cutting vehicle 1 are not blocked by the obstacles, thereby ensuring the continuity of cutting and effectively ensuring the efficiency of road construction.

[0028] More specifically, in this embodiment of the invention, a recess positioning device 10 is installed on the hammer-driven obstacle clearing device 9. The recess positioning device 10 is inserted into the recess of the road surface and is used to position the cutting vehicle 1. The recess positioning device 10 includes two ejector seats 1001, which are positioned corresponding to the two hammer heads 903. Two ejector slots 1002 are opened on the bottom side of the synchronous shovel plate 905. The two ejector seats 1001 are movably installed in the two ejector slots 1002 respectively. Positioning rotating plates 1005 are rotatably installed around the ejector seats 1001. The four positioning rotating plates 1005 are rotated and unfolded to lock the positioning rotating plates 1005 into the recess of the road surface. It should be noted that, in this embodiment of the invention, if there is a large depression in the ground during the movement of the cutting vehicle 1, the pop-out seat 1001 will be pushed out of the pop-out groove 1002 by the pop-out force of the pop-out spring 1003, and then the pop-out seat 1001 will enter the depression in the road surface. The four positioning rotating plates 1005 will rotate and unfold, and get stuck in the depression in the road surface. At this time, the synchronous shovel plate 905 will be obstructed and retracted, thereby driving the cutting power frame 3 to rotate, so that the cutting saw 4 will be lifted off the ground, avoiding the problem that the cutting vehicle 1 will overturn when it encounters a depression, while the cutting saw blade 4 continues to cut on the road surface.

[0029] Please continue to refer to the instruction manual appendix. Figures 3-6 Furthermore, the cutting equipment for road maintenance provided in this embodiment of the invention, the hammer clearing device 9, also includes a lifting rod 913, which is rotatably mounted on one side of the main support 901. A lifting wheel 914 is rotatably mounted on the lifting rod 913, and the lifting rod 913 rotates by pushing against the cutting power frame 3 through the lifting wheel 914. Furthermore, a mounting shaft 915 is rotatably mounted on the lifting rod 913, and the mounting shaft 915 is mounted on one side of the main support 901. It should be noted that, in this embodiment of the invention, when the lifting rod 913 rotates, the lifting wheel 914 pushes the cutting power frame 3 to rotate, thereby achieving the purpose of lifting the cutting power frame 3.

[0030] More specifically, in this embodiment of the invention, a retraction drive rod 916 is movably mounted on one side of the lifting rod 913, and the retraction drive rod 916 is mounted on the synchronous shovel plate 905. Furthermore, a push hole 917 is provided on the lifting rod 913, and a push shaft 918 is rotatably mounted on the retraction drive rod 916, with the push shaft 918 movably mounted within the push hole 917. It should be noted that in this embodiment of the invention, the movement of the synchronous shovel plate 905 drives the retraction drive rod 916 to move, thereby causing the push shaft 918 to push the lifting rod 913 to rotate. Simultaneously, the push shaft 918 slides within the push hole 917, and the lifting rod 913 drives the cutting power frame 3 to rotate via the lifting wheel 914, achieving the purpose of lifting the cutting saw 4 off the ground.

[0031] Please continue to refer to the instruction manual appendix. Figures 3-6 More specifically, in this embodiment of the invention, a vertical lifting groove 909 is provided on one side of the main support 901, and a transfer lifting frame 910 is slidably installed in the vertical lifting groove 909. The transfer lifting frame 910 is installed on the lifting hammer frame 902. Furthermore, a driven rotating rod 908 is installed on one side of a driving rotating frame 5. A rotating lifting shaft 911 is rotatably mounted on the driven rotating rod 908. A transition lifting frame 910 has a movable sliding hole 912, and the rotating lifting shaft 911 is movably installed in the movable sliding hole 912. It should be noted that, in this embodiment of the invention, when the driving rotating frame 5 rotates, it drives the driven rotating rod 908 to rotate. The driven rotating rod 908 drives the transition lifting frame 910 to move through the rotating lifting shaft 911. The transition lifting frame 910 moves vertically within the vertical lifting groove 909 and drives the lifting hammer frame 902 to move, causing the lifting hammer frame 902 to move upward and causing the hammer spring 906 to be stressed. At the same time, when the driven rotating rod 908 rotates one revolution, it drives the lifting hammer frame 902 to rise and fall once, so that the lifting hammer frame 902 can hammer and crush obstacles on the road surface through the two hammer heads 903.

[0032] More specifically, in this embodiment of the invention, a hammering spring 906 is installed inside the main support 901, and the hammering spring 906 is mounted on the lifting hammer frame 902; in addition, a support spring 907 is installed inside the main support 901, and the support spring 907 is mounted on the telescopic frame 904. It should be noted that in this embodiment of the invention, the contraction force of the hammering spring 906 can be used to pull back the lifting hammer frame 902, and the contraction force of the support spring 907 can be used to retract the telescopic frame 904.

[0033] Please refer to the instruction manual attached. Figures 7-9 Furthermore, the cutting device for road maintenance provided in this embodiment of the invention includes a recess positioning device 10 that further comprises two auxiliary moving wheels 1004, which are rotatably mounted on the bottom sides of two ejector seats 1001. Additionally, an ejector spring 1003 is mounted on the top side of each ejector seat 1001, with the top end of the spring 1003 mounted on the inner wall of the top side of the ejector groove 1002. It should be noted that in this embodiment of the invention, the ejector seat 1001 can be automatically ejected by the rebound force of the spring 1003.

[0034] More specifically, in this embodiment of the invention, a mounting groove 1006 is provided on the positioning rotating plate 1005, and a positioning shaft 1007 is rotatably mounted in the mounting groove 1006. The positioning shaft 1007 is mounted on the ejector seat 1001; a positioning torsion spring 1008 is mounted on the positioning shaft 1007, and the positioning torsion spring 1008 is mounted on the inner wall of the mounting groove 1006. It should be noted that, in this embodiment of the invention, when the ejector seat 1001 enters the depression in the road surface, the torsional force of the four positioning torsion springs 1008 causes the four positioning rotating plates 1005 to rotate and unfold, locking into the depression in the road surface, thereby achieving the purpose of blocking the synchronous shovel plate 905.

[0035] Please refer to the instruction manual attached. Figure 11 Furthermore, the cutting device for road maintenance provided in this embodiment of the invention also includes an active extension device 11. The active extension device 11 is installed on the underside of the cutting vehicle 1, and actively extends to provide active support for the cutting vehicle 1. It should be noted that, in this embodiment of the invention, by setting the active extension device 11, in the event of a tipping over of the cutting vehicle 1, it can actively extend to provide emergency support for the cutting vehicle 1, thus preventing the cutting vehicle 1 from tipping over.

[0036] More specifically, in this embodiment of the invention, the active extension device 11 includes an extension support frame 1101. An extension groove 1102 is provided on one side of the cutting carriage 1, and the extension support frame 1101 is slidably installed within the extension groove 1102. Furthermore, a push-out spring 1103 is installed on one side of the extension support frame 1101, and the other end of the push-out spring 1103 is installed on the inner wall of the extension groove 1102. A support wheel 1108 is rotatably installed on one side of the extension support frame 1101. It should be noted that in this embodiment of the invention, when the cutting carriage 1 is lifted at an excessive angle, the extension support frame 1101 is quickly extended under the restoring force of the push-out spring 1103.

[0037] Please continue to refer to the instruction manual appendix. Figure 11 More specifically, in this embodiment of the invention, a limiting hole 1104 is provided on the bottom inner wall of the extension slide 1102, a locking seat 1105 is slidably installed in the limiting hole 1104, and a locking groove 1106 is provided on the bottom side of the extension support frame 1101, with the locking seat 1105 inserted into the locking groove 1106. In addition, an unlocking spring 1107 is installed on the locking seat 1105. The unlocking spring 1107 is installed on the inner wall of the extension groove 1102, and a follower wheel 1109 is rotatably installed on the bottom side of the locking seat 1105. It should be noted that, in this embodiment of the invention, when the road surface is uneven or the cutting vehicle 1 is lifted to an excessive angle due to other reasons, the locking seat 1105 is ejected and disengaged from the locking groove 1106 under the rebound force of the unlocking spring 1107. At this time, the extension support frame 1101 is pushed out under the rebound force of the push-out spring 1103, thereby achieving the purpose of actively supporting the cutting vehicle 1.

[0038] In summary, the working principle of the cutting device for road maintenance provided in this embodiment of the invention is as follows: During the cutting process of the cutting vehicle 1, the cutting engine 2 drives the drive plate 8 to rotate, which in turn drives one drive rotating frame 5 to rotate via the drive belt 7. The drive rotating frame 5 drives another drive rotating frame 5 to rotate via the driven belt 6, which in turn drives the cutting saw 4 to rotate and cut the road surface. During the movement of the cutting vehicle 1, the drive rotating frame 5 drives the driven rotating rod 908 to rotate. The driven rotating rod 908 drives the transfer lifting frame 910 to move via the rotating lifting shaft 911. The transfer lifting frame 910 moves vertically in the vertical lifting groove 909 and drives the lifting hammer frame 902 to move. This causes the lifting hammer frame 902 to move upward and causes the hammer spring 906 to be stressed. At the same time, when the driven rotating rod 908 rotates one revolution, the driving lifting hammer frame 902 moves up and down once, so that the lifting hammer frame 902 hammers and crushes the obstacles on the road surface through the two hammer heads 903. The cutting vehicle 1 pushes away the obstacles through the synchronous shovel plate 905 to ensure that the cutting saw 4 is not blocked by the obstacles. Furthermore, if the obstacle cannot be removed, the synchronous shovel plate 905 is blocked and retracted, which in turn causes the support spring 907 to be stressed. The movement of the synchronous shovel plate 905 causes the retraction drive rod 916 to move, which in turn causes the push shaft 918 to push the lifting rod 913 to rotate. The push shaft 918 slides in the push hole 917, while the lifting rod 913 drives the cutting power frame 3 to rotate through the lifting wheel 914, so that the cutting saw 4 is lifted off the ground, avoiding the problem of the cutting saw 4 contacting the obstacle and causing an accident. Furthermore, if there is a large depression in the ground, the ejector seat 1001 will be pushed out of the ejector groove 1002 by the ejector force of the ejector spring 1003, so that the ejector seat 1001 enters the depression in the road surface. At this time, under the torsional force of the four positioning torsion springs 1008, the four positioning rotating plates 1005 will rotate and unfold, locking into the depression in the road surface. At the same time, the synchronous shovel plate 905 will be obstructed and retract, which can also drive the retraction drive rod 916 to move. In this way, the lifting rotating rod 913 can also drive the cutting rod through the lifting wheel 914. The cutting power frame 3 rotates, causing the cutting saw 4 to lift off the ground, preventing the cutting vehicle 1 from tipping over when it encounters a depression, while the cutting saw blade 4 continues to cut on the road surface. In addition, it should be noted that if the cutting vehicle 1 tipps over, the locking seat 1105 will pop out and disengage from the locking groove 1106 under the rebound force of the unlocking spring 1107. At this time, the extension support frame 1101 will be pushed out under the rebound force of the push-out spring 1103, so as to achieve the purpose of actively supporting the cutting vehicle 1 and preventing the cutting vehicle 1 from tipping over.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cutting device for road surface maintenance, characterized in that, It includes a cutting vehicle, on which a cutting engine and a cutting power frame are installed. A drive disc is installed on the cutting engine. Two drive rotating frames are rotatably installed on the cutting power frame. A cutting saw is installed on one of the drive rotating frames. A driven belt is sleeved on both drive rotating frames. A drive belt is sleeved on one of the drive rotating frames and the drive disc. It also includes a hammer-driven obstacle removal device, which is installed on the cutting vehicle and is used to hammer and break up obstacles on the road surface. The hammer-driven obstacle removal device includes a main support, which is installed on the cutting vehicle. A lifting hammer frame is movably installed on the top side of the main support. Two hammer heads for hammering obstacles are installed on the lifting hammer frame. A telescopic frame is movably installed on one side of the main support. A synchronous shovel plate is installed at the end of the telescopic frame and is used to remove obstacles. The hammer-driven obstacle clearing device is equipped with a depression positioning device, which is inserted into a depression in the road surface to position the cutting vehicle. The depression positioning device includes two ejector seats, which are positioned corresponding to the two hammer heads. The bottom side of the synchronous shovel plate has two ejection slots, and the two ejector seats are movably installed in the two ejection slots respectively. Positioning rotating plates are rotatably installed around the ejector seats. The four positioning rotating plates rotate and unfold to lock the positioning rotating plates into the depression in the road surface.

2. The cutting device for road surface maintenance according to claim 1, characterized in that, The hammer-driven obstacle clearing device also includes a lifting rod, which is rotatably mounted on one side of the main support. A lifting wheel is rotatably mounted on the lifting rod, and the lifting rod rotates by pushing against the cutting power frame through the lifting wheel. An installation shaft is rotatably mounted on the lifting rod, and the installation shaft is mounted on one side of the main support.

3. The cutting device for road maintenance according to claim 2, characterized in that, A retraction drive rod is movably mounted on one side of the lifting rod, and the retraction drive rod is mounted on the synchronous shovel plate; The lifting rod has a push hole, and the retraction drive rod has a push shaft rotatably mounted on it, with the push shaft movably installed inside the push hole.

4. A cutting device for road surface maintenance according to claim 3, characterized in that, A vertical lifting slot is provided on one side of the main support, and a transfer lifting frame is slidably installed in the vertical lifting slot. The transfer lifting frame is installed on the lifting hammer frame. A driven rotating rod is installed on one side of the drive rotating frame, and a rotating lifting shaft is rotatably installed on the driven rotating rod. The transfer lifting frame has a movable sliding hole, and the rotating lifting shaft is movably installed in the movable sliding hole.

5. A cutting device for road surface maintenance according to claim 4, characterized in that, A hammer spring is installed inside the main support, and the hammer spring is mounted on the lifting hammer frame. A support spring is installed inside the main support frame, and the support spring is mounted on the telescopic frame.

6. A cutting device for road surface maintenance according to claim 1, characterized in that, The recessed positioning device also includes two auxiliary moving wheels, which are rotatably mounted on the bottom sides of the two ejector seats respectively; A pop-out spring is installed on the top side of the pop-out seat, and the top end of the pop-out spring is installed on the inner wall of the top side of the pop-out slot.

7. A cutting device for road surface maintenance according to claim 6, characterized in that, The positioning plate is provided with an installation groove, and a positioning shaft is rotatably installed in the installation groove. The positioning shaft is installed on the ejector seat. A positioning torsion spring is installed on the positioning shaft, and the positioning torsion spring is installed on the inner wall of the mounting groove.

8. A cutting device for road surface maintenance according to claim 1, characterized in that, It also includes an active extension device, which is installed on the underside of the cutting vehicle and actively extends to provide active support for the cutting vehicle.

9. A cutting device for road surface maintenance according to claim 8, characterized in that, The active extension device includes an extension support frame, and an extension groove is provided on one side of the cutting vehicle, and the extension support frame is slidably installed in the extension groove; A push-out spring is installed on one side of the extension support frame, and the other end of the push-out spring is installed on the inner wall of the extension slide. A support wheel is rotatably installed on one side of the extension support frame.

10. A cutting device for road surface maintenance according to claim 9, characterized in that, A limiting hole is provided on the bottom inner wall of the extension slide, and a locking seat is slidably installed in the limiting hole. A locking groove is provided on the bottom side of the extension support frame, and the locking seat is inserted into the locking groove. An unlocking spring is installed on the locking seat, the unlocking spring is installed on the inner wall of the extension slide, and a follower wheel is rotatably installed on the bottom side of the locking seat.

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