Rapid hierarchical cutting device for shrinkage joints of concrete pavement

Abstract

The invention provides a rapid hierarchical cutting device for concrete pavement shrinkage joints, which belongs to the technical field of hydraulic engineering and comprises a vehicle body, a translation frame, a lifting frame, a lifting assembly, two clamping plates, a group of clamping assemblies and a group of connection switching mechanisms. The two clamping plates are transversely arranged on the translation frame in a sliding manner; the clamping assembly is arranged on the translation frame and used for driving the two clamping plates to clamp the lifted lifting frame; the connection switching mechanism is connected to the lifting assembly and used for being connected with the lifting frame or the clamping assembly. The connection switching mechanism has a first state and a second state, in the first state, the connection switching mechanism is connected between the lifting assembly and the lifting frame, and the lifting assembly drives the lifting frame to ascend and descend; and in the second state, the connecting mechanism is connected to the clamping assembly, and the lifting assembly drives the clamping assembly to act. According to the lifting frame fixing device, the lifted lifting frame is fixed, the lifting frame lifted to any height can be fixed, and a guarantee is provided for stepless adjustment of the height of the lifting frame.

Description

Technical Field

[0001] This application belongs to the technical field of water conservancy engineering, and more specifically, it relates to a rapid layered cutting device for contraction joints in concrete pavement. Background Technology

[0002] In farmland water conservancy construction projects, concrete is usually used for road construction. In the maintenance of farm roads, joint cutting technology also plays an important role. By precisely grouting the joints of farm roads, not only can cracks be filled and potential safety hazards eliminated, but the load-bearing capacity and stability of the road can also be significantly enhanced.

[0003] The existing concrete pavement contraction joint cutting device includes a mobile trolley, on which a translation structure, a lifting structure, and a cutting saw blade are installed. The translation structure includes a translation frame and a drive component. The translation frame is slidably mounted on the mobile trolley along the forward direction of the trolley, and the drive component drives the translation frame to slide. The lifting structure includes a lifting frame, a screw, and a lifting component. The lifting frame is vertically slidably mounted on the translation frame, the screw is rotatably mounted on the translation frame and threadedly connected to the lifting frame, and the lifting component drives the screw to rotate, thereby realizing the lifting and lowering of the lifting frame. The cutting saw blade is mounted on the lifting frame.

[0004] When the translation structure drives the cutting saw blade to move laterally, the lifting structure needs to keep the height of the cutting saw blade constant. Because the cutting saw blade will generate strong vibration when cutting concrete, after a long period of use, the height of the cutting saw blade may change during the cutting process due to large wear of the threads between the lifting frame and the screw or other factors, which will affect the quality of the cut. Summary of the Invention

[0005] The purpose of this application is to provide a rapid, multi-level cutting device for contraction joints in concrete pavements, in order to solve the technical problem in the prior art where the height of the cutting saw blade changes during the cutting process due to excessive wear of the threads between the lifting frame and the screw or other factors, thus affecting the quality of the cut.

[0006] To achieve the above objectives, the technical solution adopted in this application is: to provide a rapid, layered cutting device for concrete pavement contraction joints, comprising a vehicle body and a translation frame mounted on the vehicle body, wherein a lifting frame and a lifting assembly are mounted on the translation frame, and a cutting component is mounted on the lifting frame; the cutting device further includes: Two clamping plates are slidably mounted on the translation frame and are located on both sides of the lifting frame, respectively. A clamping assembly, mounted on the translation frame, is used to drive the two clamping plates to clamp the lifting frame after it has been raised and lowered; and A connection switching mechanism is connected to the lifting assembly and is used to connect the lifting frame or the clamping assembly; The connection switching mechanism has a first state and a second state. In the first state, the connection switching mechanism is connected between the lifting assembly and the lifting frame, and the lifting assembly drives the lifting frame to rise and fall. In the second state, the connection switching mechanism is connected between the lifting assembly and the clamping assembly, and the lifting assembly drives the clamping assembly to move so that the two clamping plates slide. In one possible implementation, based on the above technical solutions, the lifting component includes: The lifting screw is vertically rotatably mounted on the translation frame; and A driving component is mounted on the translation frame and is used to drive the lifting screw to rotate; The lifting frame is threadedly connected to the lifting screw; in the first state, the connection switching mechanism is connected between the lifting screw and the lifting frame.

[0007] In one possible implementation, based on the above technical solutions, the clamping component includes: The mounting bracket is fixed to the lifting frame; Two clamping screws are laterally rotatably connected to the mounting frame and are located on both sides of the lifting frame, respectively; and Two push plates are slidably mounted on the mounting bracket, and each push plate corresponds to a clamping screw and is threaded to the clamping screw. The push plate is located outside the clamping plate and is used to push the clamping plate toward the lifting frame; in the second state, the connection switching mechanism is connected between the lifting screw and the clamping screw, and when the lifting screw rotates, the two clamping screws rotate in opposite directions.

[0008] In one possible implementation, based on the above technical solutions, the connection switching mechanism includes: A threaded sleeve is rotatably fitted inside the lifting frame and threadedly connected to the lifting screw; A connecting component, disposed on the lifting frame, is used to fix the threaded sleeve to the lifting frame; The first bevel gear is coaxially fixed to the threaded sleeve; and Two second bevel gears correspond one-to-one with the two clamping screws and are coaxially fixed, with the two second bevel gears meshing on opposite sides of the first bevel gear.

[0009] In one possible implementation, based on the above technical solutions, the bottom of the threaded sleeve protrudes from the lifting frame, and a slot is provided on one side of the bottom of the threaded sleeve; the connecting assembly includes: A sliding plate, slidably disposed at the bottom of the lifting frame and facing the slot; and A drive cylinder is located at the bottom of the lifting frame. The piston rod of the drive cylinder is connected to the insert plate and is used to drive the insert plate to insert into the slot.

[0010] In one possible implementation, in conjunction with the above technical solutions, the cutting device further includes: Two sets of one-way limiting mechanisms are located on both sides of the lifting frame and connected between the mounting frame and the translation frame; the one-way limiting mechanisms are used to restrict the mounting frame to move only upward, so as to support the lifting frame and the mounting frame after lifting; In the first state, the direction of rotation of the lifting screw driving the lifting frame to descend is the same as that of the lifting screw driving the first bevel gear to rotate in the second state, so that the rotation direction of the two push plates when they approach each other is the same.

[0011] In one possible implementation, based on the above technical solutions, the unidirectional limiting mechanism includes: The ratchet is vertically fixed to the translation frame; A movable frame is laterally slidably mounted on the mounting frame, and the sliding direction of the movable frame is consistent with the tooth width direction of the ratchet. A pawl, disposed on the movable frame, engages with the ratchet teeth; and A movable component is connected between the movable frame and the insert plate; When the insert plate is located outside the slot, the ratchet and the pawl are engaged; when the insert plate is inserted into the slot, the moving member drives the moving frame to slide, so that the pawl and the ratchet are separated.

[0012] In one possible implementation, based on the above technical solutions, the moving component includes: A pull rope, one end of which is connected to the movable frame and the other end of which is connected to the insert plate; A guide wheel, rotatably mounted at the bottom of the mounting frame, is used to guide the bend in the pull rope; and A movable spring is disposed between the mounting bracket and the movable bracket; The pull rope is always taut. When the insert plate moves outward from the slot, the pull rope drives the moving frame to slide, so that the pawl engages with the ratchet teeth, and the moving spring is compressed.

[0013] In one possible implementation, based on the above technical solutions, the clamping plate includes: Multiple clamping blocks are arranged vertically, and all of the clamping blocks are laterally slidably connected to the translation frame; and A reset assembly, connected to all the clamping blocks, is used to move the corresponding clamping block away from the lifting frame and reset when the push plate releases its clamping action on the clamping block.

[0014] In one possible implementation, based on the above technical solutions, a reset groove is laterally formed on the top surface of the clamping block, and the reset assembly includes: Multiple first magnetic blocks are individually fixed to the bottom of each of the clamping blocks and located within the reset groove on the lower clamping block; Multiple second magnetic blocks, each individually fixed within each of the reset slots and located on the side of the first magnetic block away from the lifting frame, wherein the surfaces of the first and second magnetic blocks facing each other repel each other; and A return spring is disposed between the translation frame and the uppermost clamping block; when the return spring is in the free state, all the clamping blocks are separated from the lifting frame.

[0015] The beneficial effects of the rapid layered cutting device for concrete pavement contraction joints provided in this application are as follows: Compared with the prior art, when the height of the lifting frame needs to be adjusted, this application can switch to the first state through the connecting switching mechanism, which can drive the lifting frame to rise and fall through the lifting component; after the height of the lifting frame is adjusted, the connecting switching mechanism can switch to the second state, which allows the lifting component to drive the two clamping plates to move closer to each other through the clamping component until the two clamping plates clamp the lifting frame tightly; this not only achieves the fixation of the lifting frame after lifting, improving the stability of the cutting component when cutting concrete and ensuring the cutting quality, but also allows the lifting frame to be fixed at any height through clamping and fixing, providing a guarantee for the stepless adjustment of the lifting frame height. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the rapid layered cutting device for concrete pavement contraction joints provided in the embodiments of this application; Figure 2 This is a structural schematic diagram of the translation frame, lifting frame, and cutting component provided in the embodiments of this application; Figure 3 This is a schematic diagram of the lifting assembly and clamping assembly provided in the embodiments of this application; Figure 4 This is a schematic diagram of the connection switching mechanism and the one-way limiting mechanism provided in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of the connecting component and the moving part provided in the embodiments of this application; Figure 6 A vertical sectional view of the clamping block and reset assembly provided in an embodiment of this application.

[0018] The labels for the attached figures are as follows: 1. Vehicle body; 2. Translation frame; 3. Lifting frame; 4. Lifting assembly; 41. Lifting screw; 42. Drive component; 5. Clamping plate; 51. Clamping block; 511. Reset slide groove; 52. Reset assembly; 521. First magnetic block; 522. Second magnetic block; 6. Clamping assembly; 61. Mounting bracket; 62. Clamping screw; 63. Push plate; 7. Connection switching mechanism; 71. Threaded sleeve; 711. Slot; 72. Connection assembly; 721. Insert plate; 722. Drive cylinder; 73. First bevel gear; 74. Second bevel gear; 8. One-way limit mechanism; 81. Racket; 82. Moving frame; 83. Pawl; 84. Moving part; 841. Pull rope; 842. Guide wheel. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this application and are not intended to limit this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] It should be further noted that the accompanying drawings and embodiments of this application mainly describe the concept of this application. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this application, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0021] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] The rapid layered cutting device for contraction joints in concrete pavement provided in this application will now be described.

[0023] like Figures 1 to 4 As shown, one embodiment of this application provides a rapid layered cutting device for concrete pavement contraction joints, including a vehicle body 1, a translation frame 2, a lifting frame 3, a lifting assembly 4, two clamping plates 5, a set of clamping assemblies 6, and a set of connecting and switching mechanisms 7.

[0024] refer to Figure 1 and Figure 2 The translation frame 2 is slidably mounted on the vehicle body 1 along the travel direction of the vehicle body 1. A linear module can be installed on the vehicle body 1 to drive the translation frame 2 to slide. The lifting frame 3 is vertically slidably mounted on the translation frame 2. The lifting frame 3 is equipped with a cutting component, which includes a motor and a cutting saw blade. The lifting assembly 4 is mounted on the translation frame 2 and is used to drive the lifting frame 3 to rise and fall.

[0025] refer to Figure 3 and Figure 4 Two clamping plates 5 are slidably mounted on the translation frame 2 and are located on both sides of the lifting frame 3 respectively; the clamping assembly 6 is mounted on the translation frame 2 and is used to drive the two clamping plates 5 to clamp the lifting frame 3 after lifting; the connecting switching mechanism 7 is connected to the lifting assembly 4 and is used to connect the lifting frame 3 or the clamping assembly 6.

[0026] The connecting switching mechanism 7 has a first state and a second state. In the first state, the connecting switching mechanism 7 is connected between the lifting component 4 and the lifting frame 3, and the lifting component 4 drives the lifting frame 3 to rise and fall. In the second state, the connecting switching mechanism 7 is connected between the lifting component 4 and the clamping component 6, and the lifting component 4 drives the clamping component 6 to move so that the two clamping plates 5 slide.

[0027] Compared with the prior art, the rapid layered cutting device for concrete pavement contraction joints provided in this embodiment, when the height of the lifting frame 3 needs to be adjusted, can be switched to the first state by connecting the switching mechanism 7, so that the lifting assembly 4 can drive the lifting frame 3 to rise and fall; after the height of the lifting frame 3 is adjusted, it can be switched to the second state by connecting the switching mechanism 7, so that the lifting assembly 4 drives the two clamping plates 5 to move closer to each other through the clamping assembly 6, until the two clamping plates 5 clamp the lifting frame 3 tightly; this not only fixes the lifting frame 3 after it has been raised and lowered, improving the stability of the cutting part when cutting concrete and ensuring the cutting quality, but also fixes the lifting frame 3 at any height by clamping and fixing, providing a guarantee for the stepless adjustment of the height of the lifting frame 3.

[0028] like Figures 3 to 4 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The lifting assembly 4 includes a lifting screw 41 and a driving component 42; the lifting screw 41 is vertically rotatably mounted on the translation frame 2; the driving component 42 is mounted on the translation frame 2 and is used to drive the lifting screw 41 to rotate. The lifting frame 3 is threadedly connected to the lifting screw 41; in the first state, the connection switching mechanism 7 is connected between the lifting screw 41 and the lifting frame 3.

[0029] Specifically, in this embodiment, the driving component 42 is a motor, which is mounted on the translation frame 2, and its output shaft is connected to the lifting screw 41.

[0030] The lifting screw 41 is driven to rotate by the driving component 42. By utilizing the principle of screw transmission, the lifting frame 3 can be raised and lowered smoothly. The structure is simple and reliable, and easy to maintain and operate.

[0031] like Figures 4 to 5 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The clamping assembly 6 includes a mounting frame 61, two clamping screws 62, and two push plates 63. The mounting frame 61 is fixed on the lifting frame 3. The two clamping screws 62 are laterally rotatably connected to the mounting frame 61 and are located on both sides of the lifting frame 3 respectively. The two push plates 63 are laterally slidably disposed on the mounting frame 61, and the push plates 63 correspond one-to-one with the clamping screws 62 and are threadedly connected to the clamping screws 62.

[0032] Among them, the push plate 63 is located on the outside of the clamping plate 5 and is used to push the clamping plate 5 toward the lifting frame 3; in the second state, the connecting switching mechanism 7 is connected between the lifting screw 41 and the clamping screw 62. When the lifting screw 41 rotates, the two clamping screws 62 rotate in opposite directions.

[0033] In the second state, the rotation of the lifting screw 41 can simultaneously drive the two clamping screws 62 to rotate in opposite directions, thereby causing the two push plates 63 to move closer to each other until the two push plates 63 push the two clamping plates 5 to clamp the lifting frame 3. By utilizing the self-locking characteristic of the screw drive of the clamping screw 62, a stable clamping state can be maintained after the clamping plates 5 are clamped.

[0034] Furthermore, since the push plate 63 moves up and down together with the mounting frame 61 and the lifting frame 3, after each lifting frame 3 has finished moving up and down, the position of the push plate 63 pushing the clamping plate 5 can be directly facing the lifting frame 3, so that the force of the push plate 63 can be applied to the lifting frame 3 more directly through the clamping plate 5, which further improves the stability of the lifting frame 3 after clamping.

[0035] like Figures 4 to 5 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The connection switching mechanism 7 includes a threaded sleeve 71, a connecting component 72, a first bevel gear 73, and two second bevel gears 74; the threaded sleeve 71 is rotatably embedded in the lifting frame 3 and threadedly connected to the lifting screw 41; the connecting component 72 is disposed on the lifting frame 3 and is used to fix the threaded sleeve 71 to the lifting frame 3.

[0036] The first bevel gear 73 is coaxially fixed on the threaded sleeve 71; the two second bevel gears 74 correspond one-to-one with the two clamping screws 62 and are coaxially fixed, and the two second bevel gears 74 mesh with the opposite sides of the first bevel gear 73.

[0037] By fixing or separating the threaded sleeve 71 from the lifting frame 3 through the connecting component 72, the connection switching mechanism 7 can be controlled to be in either the first or second state. In the first state, the rotation of the lifting screw 41 can directly drive the threaded sleeve 71 and the lifting frame 3 to rise and fall synchronously, and the threaded sleeve 71 will not rotate. In the second state, the rotation of the lifting screw 41 only drives the threaded sleeve 71 to rotate, while the lifting frame 3 remains stationary. Thus, through the transmission of the first bevel gear 73 and the second bevel gear 74, the two clamping screws 62 are driven to rotate, thereby realizing the clamping action of the clamping plate 5.

[0038] Driven by a single drive component 42, the threaded sleeve 71 can switch between lifting and rotating actions, thereby enabling the lifting frame 3 to be lifted and clamped. This method is convenient to operate, has high transmission efficiency, and does not require an additional power source, thus reducing maintenance costs.

[0039] like Figure 5 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The bottom of the threaded sleeve 71 protrudes from the lifting frame 3, and a slot 711 is provided on one side of the bottom of the threaded sleeve 71; the connecting assembly 72 includes an insert plate 721 and a drive cylinder 722; the insert plate 721 is slidably disposed at the bottom of the lifting frame 3 and faces the slot 711; the drive cylinder 722 is disposed at the bottom of the lifting frame 3, and the piston rod of the drive cylinder 722 is connected to the insert plate 721 and is used to drive the insert plate 721 to insert into the slot 711.

[0040] By driving the cylinder 722 to insert or disengage the insert plate 721 into the slot 711, the threaded sleeve 71 and the lifting frame 3 can be easily fixed and separated, thereby quickly switching the working state of the connection switching mechanism 7. Furthermore, the engagement between the insert plate 721 and the slot 711 provides reliable connection force, ensuring that the lifting screw 41 can effectively drive the lifting frame 3 to rise and fall in the first state.

[0041] like Figures 3 to 5 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The cutting device also includes two sets of one-way limiting mechanisms 8, which are located on both sides of the lifting frame 3 and connected between the mounting frame 61 and the translation frame 2. The one-way limiting mechanisms 8 are used to restrict the mounting frame 61 to move only upward, so as to support the lifting frame 3 and the mounting frame 61 after lifting.

[0042] In the first state, the lifting screw 41 drives the lifting frame 3 to descend in the same direction as in the second state, so that the lifting screw 41 drives the first bevel gear 73 to rotate, so that the two push plates 63 rotate in the same direction when they approach each other.

[0043] In the first state, the one-way limiting mechanism 8 removes the restriction on the lifting direction of the mounting frame 61, allowing the lifting frame 3 and the mounting frame 61 to be adjusted downwards. In the second state, the lifting frame 3 and the mounting frame 61 have finished descending. The one-way limiting mechanism 8 first restricts the direction of the mounting frame 61, then the drive cylinder 722 drives the insert plate 721 to disengage from the slot 711, and the lifting assembly 4 drives the threaded sleeve 71 to rotate until the two push plates 63 push the two clamping plates 5 to clamp the lifting frame 3.

[0044] As the two push plates 63 approach each other, since the rotation direction of the lifting screw 41 is the same as the rotation direction when the lifting frame 3 is lowered, the one-way limiting mechanism 8 can support the lifting frame 3 and the mounting frame 61 on the one hand, reduce the thread wear between the lifting screw 41 and the threaded sleeve 71, and on the other hand, prevent the lifting frame 3 from sinking incorrectly due to the continued rotation of the lifting screw 41, thereby improving the stability of the lifting frame 3 after it has been lowered and thus avoiding damage to the base layer below the concrete.

[0045] like Figures 3 to 5 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The one-way limiting mechanism 8 includes a ratchet 81, a movable frame 82, a pawl 83, and a movable component 84; the ratchet 81 is vertically fixed on the translation frame 2; the movable frame 82 is laterally slidably mounted on the mounting frame 61, and the sliding direction of the movable frame 82 is consistent with the tooth width direction of the ratchet 81; the pawl 83 is mounted on the movable frame 82 and engages with the ratchet 81; the movable component 84 is connected between the movable frame 82 and the insert plate 721.

[0046] When the insert plate 721 is located outside the slot 711, the ratchet 81 and the pawl 83 are engaged; when the insert plate 721 is inserted into the slot 711, the moving part 84 drives the moving frame 82 to slide, so that the pawl 83 and the ratchet 81 are separated.

[0047] When the lifting frame 3 needs to be lowered, the moving part 84 drives the moving frame 82 to slide, causing the pawl 83 to disengage from the ratchet 81, thus allowing the height of the lifting frame 3 to be adjusted. After the lifting frame 3 has finished lowering, the moving part 84 drives the moving frame 82 to reset, causing the pawl 83 to re-engage with the ratchet 81, at which point the clamping operation of the lifting frame 3 can be performed, improving the efficiency of the one-way limit mechanism 8 in switching the limit state of the mounting frame 61.

[0048] like Figure 5 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The movable component 84 includes a pull rope 841, a guide wheel 842, and a movable spring (not shown in the figure); one end of the pull rope 841 is connected to the movable frame 82, and the other end is connected to the insert plate 721; the guide wheel 842 is rotatably mounted at the bottom of the mounting frame 61 and is used to guide the bend of the pull rope 841; the movable spring is disposed between the mounting frame 61 and the movable frame 82.

[0049] The pull rope 841 is always taut. When the insert plate 721 is disengaged from the slot 711, the pull rope 841 drives the moving frame 82 to slide, so that the pawl 83 engages with the ratchet 81, and the moving spring is compressed. Before the insert plate 721 is completely disengaged from the slot 711, the pawl 83 has already partially engaged with the ratchet 81.

[0050] While the drive cylinder 722 drives the insert plate 721 to disengage from the slot 711, the insert plate 721 pulls the moving frame 82 to move via the pull rope 841, so that the pawl 83 engages with the ratchet 81, thereby supporting the lifting frame 3 and the mounting frame 61, and then the clamping operation of the lifting frame 3 can be carried out.

[0051] When the drive cylinder 722 drives the insert plate 721 to be inserted into the slot 711 again, the rebound force of the moving spring drives the moving frame 82 to move in the opposite direction, so that the pawl 83 is separated from the ratchet 81 again, and the height of the lifting frame 3 can be adjusted again, which improves the switching efficiency of supporting and limiting the lifting frame 3 and releasing the restriction.

[0052] Furthermore, by simply driving the insert plate 721 to move via the drive cylinder 722, the state switching between the threaded sleeve 71 and the lifting frame 3, as well as the state switching of the lifting frame 3 by the one-way limit mechanism 8, can be achieved simultaneously. This makes the operation convenient and efficient, and eliminates the need for an additional power source, thus reducing maintenance costs.

[0053] like Figure 4 and Figure 6 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: The clamping plate 5 includes multiple clamping blocks 51 and a set of reset components 52; the multiple clamping blocks 51 are arranged vertically, and all clamping blocks 51 are slidably connected to the translation frame 2; the reset components 52 are connected to all clamping blocks 51, and the reset components 52 are used to move the corresponding clamping blocks 51 away from the lifting frame 3 and reset when the push plate 63 releases the clamping of the clamping blocks 51.

[0054] After the mounting bracket 61 and push plate 63 have completed the lifting and lowering process with the lifting frame 3, the two push plates 63 push the opposing clamping block 51 toward the lifting frame 3 to clamp it. This eliminates the need for the entire clamping plate 5 to move together, making the clamping force of the clamping block 51 on the lifting frame 3 more precise and stable, and further improving the stability of the lifting frame 3 after lifting and lowering.

[0055] like Figure 6 As shown, this application provides another specific implementation method based on the above-described implementation method as follows: All clamping blocks 51 except the topmost one have a horizontally opened reset groove 511 on their top surface. The reset assembly 52 includes multiple first magnetic blocks 521, multiple second magnetic blocks 522 and a reset spring. Each first magnetic block 521 is fixed at the bottom of each clamping block 51 except the bottommost one and is located in the reset groove 511 on the lower clamping block 51.

[0056] The second magnetic block 522 is individually fixed within each reset groove 511 and located on the side of the first magnetic block 521 away from the lifting frame 3. The surfaces of the first magnetic block 521 and the second magnetic block 522 facing each other repel each other. The reset spring is disposed between the translation frame 2 and the uppermost clamping block 51; when the reset spring is in the free state, all clamping blocks 51 and the lifting frame 3 are in a separated state.

[0057] Specifically, when the clamping block 51 clamps the lifting frame 3, the first magnetic block 521 and the corresponding second magnetic block 522 are in a non-contact state.

[0058] When the push plate 63 pushes the clamping block 51 toward the lifting frame 3, the corresponding first magnetic block 521 moves toward the second magnetic block 522 until the clamping block 51 clamps the lifting frame 3. When the clamping of the lifting frame 3 is released, the push plate 63 resets in the reverse direction. At this time, the first magnetic block 521 is repelled by the second magnetic block 522, which drives the corresponding clamping block 51 to reset in the reverse direction. At the same time, the reset spring can ensure that the uppermost clamping block 51 is stable in position when it is not under force, so that it cooperates with the first magnetic block 521 and the second magnetic block 522 on each of the lower clamping blocks 51 to realize the automatic reset of all clamping blocks 51, which improves the reliability and working efficiency of the cutting device.

[0059] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rapid, layered cutting device for contraction joints in concrete pavement, comprising a vehicle body (1) and a translation frame (2) mounted on the vehicle body (1), wherein a lifting frame (3) and a lifting assembly (4) are mounted on the translation frame (2), and a cutting component is mounted on the lifting frame (3); characterized in that, The cutting device further includes: Two clamping plates (5) are slidably mounted on the translation frame (2) and are located on both sides of the lifting frame (3); A clamping assembly (6), mounted on the translation frame (2), is used to drive the two clamping plates (5) to clamp the lifting frame (3) after it has been raised and lowered; and A connection switching mechanism (7) is connected to the lifting assembly (4) and is used to connect the lifting frame (3) or the clamping assembly (6). The connection switching mechanism (7) has a first state and a second state. In the first state, the connection switching mechanism (7) is connected between the lifting assembly (4) and the lifting frame (3), and the lifting assembly (4) drives the lifting frame (3) to rise and fall. In the second state, the connection switching mechanism (7) is connected between the lifting assembly (4) and the clamping assembly (6), and the lifting assembly (4) drives the clamping assembly (6) to move so that the two clamping plates (5) slide.

2. The rapid layered cutting device for concrete pavement contraction joints as described in claim 1, characterized in that, The lifting assembly (4) includes: The lifting screw (41) is vertically rotatably mounted on the translation frame (2); and A drive unit (42) is mounted on the translation frame (2) and is used to drive the lifting screw (41) to rotate; The lifting frame (3) is threadedly connected to the lifting screw (41); in the first state, the connection switching mechanism (7) is connected between the lifting screw (41) and the lifting frame (3).

3. The rapid layered cutting device for concrete pavement contraction joints as described in claim 2, characterized in that, The clamping assembly (6) includes: Mounting bracket (61) is fixed on the lifting frame (3); Two clamping screws (62) are laterally rotatably connected to the mounting bracket (61) and are located on both sides of the lifting frame (3); and Two push plates (63) are slidably disposed on the mounting bracket (61). The push plates (63) correspond one-to-one with the clamping screws (62) and are threadedly connected to the clamping screws (62). The push plate (63) is located outside the clamping plate (5) and is used to push the clamping plate (5) toward the lifting frame (3); in the second state, the connection switching mechanism (7) is connected between the lifting screw (41) and the clamping screw (62), and when the lifting screw (41) rotates, the two clamping screws (62) rotate in opposite directions.

4. The rapid layered cutting device for concrete pavement contraction joints as described in claim 3, characterized in that, The connection switching mechanism (7) includes: The threaded sleeve (71) is rotatably fitted inside the lifting frame (3) and threadedly connected to the lifting screw (41). A connecting component (72) is provided on the lifting frame (3) for fixing the threaded sleeve (71) to the lifting frame (3); The first bevel gear (73) is coaxially fixed on the threaded sleeve (71); and Two second bevel gears (74) correspond one-to-one with two clamping screws (62) and are coaxially fixed. The two second bevel gears (74) mesh on opposite sides of the first bevel gear (73).

5. The rapid layered cutting device for concrete pavement contraction joints as described in claim 4, characterized in that, The bottom of the threaded sleeve (71) protrudes from the lifting frame (3), and a slot (711) is provided on one side of the bottom of the threaded sleeve (71); the connecting assembly (72) includes: Insert plate (721), slidably disposed at the bottom of the lifting frame (3) and facing the slot (711); and A drive cylinder (722) is located at the bottom of the lifting frame (3). The piston rod of the drive cylinder (722) is connected to the insert plate (721) and is used to drive the insert plate (721) to insert into the slot (711).

6. The rapid layered cutting device for concrete pavement contraction joints as described in claim 5, characterized in that, The cutting device further includes: Two sets of one-way limiting mechanisms (8) are located on both sides of the lifting frame (3) and connected between the mounting frame (61) and the translation frame (2); the one-way limiting mechanism (8) is used to restrict the mounting frame (61) to move only upward, so as to support the lifting frame (3) and the mounting frame (61) after lifting; In the first state, the lifting screw (41) drives the lifting frame (3) to descend in the same direction as in the second state, where the lifting screw (41) drives the first bevel gear (73) to rotate, so that the two push plates (63) rotate in the same direction when they approach each other.

7. The rapid layered cutting device for concrete pavement contraction joints as described in claim 6, characterized in that, The one-way limiting mechanism (8) includes: The ratchet (81) is vertically fixed on the translation frame (2); The movable frame (82) is laterally slidably disposed on the mounting frame (61), and the sliding direction of the movable frame (82) is consistent with the tooth width direction of the ratchet (81); A pawl (83) is disposed on the movable frame (82) and engages with the ratchet tooth (81); and A movable component (84) is connected between the movable frame (82) and the insert plate (721); When the insert plate (721) is located outside the slot (711), the ratchet (81) and the pawl (83) are engaged; when the insert plate (721) is inserted into the slot (711), the moving part (84) drives the moving frame (82) to slide so that the pawl (83) and the ratchet (81) are separated.

8. The rapid layered cutting device for concrete pavement contraction joints as described in claim 7, characterized in that, The movable element (84) includes: A pull rope (841) is connected at one end to the movable frame (82) and at the other end to the insert plate (721). A guide wheel (842) is rotatably mounted at the bottom of the mounting bracket (61) and is used to guide the bend in the pull rope (841); and A movable spring is disposed between the mounting bracket (61) and the movable bracket (82); The pull rope (841) is always taut. When the insert plate (721) moves outward from the slot (711), the pull rope (841) drives the moving frame (82) to slide, so that the pawl (83) engages with the ratchet (81), and the moving spring is compressed.

9. The rapid layered cutting device for concrete pavement contraction joints as described in any one of claims 3-8, characterized in that, The clamping plate (5) includes: Multiple clamping blocks (51) are arranged vertically, and all of the clamping blocks (51) are laterally slidably connected to the translation frame (2); and A reset component (52) is connected to all the clamping blocks (51). The reset component (52) is used to move the corresponding clamping block (51) away from the lifting frame (3) and reset it when the push plate (63) releases the clamping of the clamping block (51).

10. The rapid layered cutting device for concrete pavement contraction joints as described in claim 9, characterized in that, The top surface of the clamping block (51) is provided with a horizontal reset groove (511), and the reset assembly (52) includes: Multiple first magnetic blocks (521) are individually fixed to the bottom of each clamp (51) and located within the reset groove (511) on the lower clamp (51); Multiple second magnetic blocks (522), each individually fixed within each of the reset grooves (511), are located on the side of the first magnetic block (521) away from the lifting frame (3), with the surfaces of the first magnetic block (521) and the second magnetic blocks (522) facing each other repelling each other; and A reset spring is provided between the translation frame (2) and the uppermost clamping block (51); when the reset spring is in a free state, all the clamping blocks (51) and the lifting frame (3) are in a separated state.

Images