Concrete pavement joint cleaning machine

Abstract

The utility model discloses a concrete pavement joint cleaning machine, which belongs to the technical field of joint cleaning machines and comprises a support frame, a push handle is fixedly mounted at the top of the support frame, a mounting frame is fixedly mounted on one side of the support frame, and moving wheels for driving the device to move are fixedly mounted at the bottom end of the mounting frame through bolts. A digging knife used for cleaning the joint is installed on the side, away from the moving wheel, of the supporting frame, guide structures used for guiding the digging knife to enter the joint are installed on the two sides of the digging knife, the guide wheel is arranged, the pull rod is manually pulled to enable the adjusting rod to rotate, the guide wheel and the digging knife are pulled to accurately enter the pavement joint, and the problem that the digging knife cannot accurately enter the joint easily is effectively solved. The digging knife can be retracted into the inner cavity of the guide wheel by matching with the expansion structure, the guide wheel is used for replacing the digging of a butt joint seam, the contact between the digging knife and a road surface during the butt joint seam is reduced, the abrasion caused by unnecessary friction between the digging knife and the road surface is avoided, and the service life of the digging knife is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of crack cleaning machine technology, specifically a crack cleaning machine for concrete pavement. Background Technology

[0002] During the use of concrete pavement, the joints are easily filled with debris, dust, sand, etc. In order to ensure the expansion and contraction function of the joints, a joint cleaning machine can effectively remove debris and extend the service life of the pavement.

[0003] Chinese patent discloses a tool for cleaning expansion joints in cement concrete roads and airport pavements (publication number CN215593628U). This patent includes a wheel fork, a cleaning knife, a pressure block, a guide shaft, a nut, an adjusting sleeve, fastening bolts, a bearing, an end cap, and a limiting spring. The wheel fork has a U-shaped cross-section. The horizontal plate of the wheel fork has threaded holes at both ends, and the lower ends of the vertical plates on both sides of the wheel fork have U-shaped locking grooves. The vertical plates on both sides of the wheel fork are connected to the guide shaft by nuts. The right side of the guide shaft is connected to the adjusting sleeve by a threaded connection. The left side of the adjusting sleeve has a pressure block. The pressure block is connected to the end cap by two sets of fastening bolts, and two sets of cleaning knives are provided between the pressure block and the end cap. The end cap is connected to the guide shaft by bearings, and the left side of the end cap has a limiting spring. The left end of the limiting spring is connected to the inner wall of the left vertical plate of the wheel fork.

[0004] Therefore, based on the above search and combined with existing information, in order to maintain the load-bearing capacity of the pavement, the width of the pavement joints is usually designed to be relatively narrow. However, in this patent, it is difficult to ensure that the cleaning blade can accurately enter the gap every time in the moving device. Moreover, when adjusting the position of the cleaning blade, the cleaning blade is also prone to friction with the pavement, which leads to wear of the cleaning blade, resulting in inconsistent cleaning depth and quality, affecting the overall effect of cleaning the pavement joints, and reducing the service life of the cleaning blade. Utility Model Content

[0005] The purpose of this invention is to provide a concrete pavement crack cleaning machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A concrete pavement joint cleaning machine includes a support frame, a push handle fixedly installed on the top of the support frame, an mounting frame fixedly installed on one side of the support frame, a moving wheel for driving the device fixedly installed at the bottom of the mounting frame, a digging blade for cleaning joints installed on the side of the support frame away from the moving wheel, and guide structures for guiding the digging blade into the joints installed on both sides of the digging blade.

[0008] The guiding structure includes a fixed rod, which is fixedly located at the top of the support frame. An adjusting rod is rotatably connected to the center of the fixed rod. A connector is fixedly installed at the bottom end of the adjusting rod. A guide wheel for guidance is rotatably installed in the inner cavity of the connector. An expansion structure for controlling the extension and retraction of the digging blade is fixedly installed in the inner cavity of the guide wheel, and the expansion structure is fixedly connected to the digging blade. When the guide wheel performs guiding operations, the expansion structure drives the digging blade to retract into the inner cavity of the guide wheel, thereby reducing wear on the digging blade.

[0009] As a further embodiment of this utility model, the expansion structure includes an airbag, which is fixedly located in the inner cavity of the guide wheel. Multiple moving blocks for driving the digging blade are fixedly installed on the outer wall of the airbag. Moving rods are fixedly installed at both ends of each moving block, and one end of each moving rod is fixedly connected to the digging blade.

[0010] As a further embodiment of this utility model, in order to limit the movement range of the moving rod, limit plates are rotatably installed on both sides of the airbag. Each limit plate has multiple limit grooves in its inner cavity for providing movement of the moving rod, and the moving rod is located in the limit groove.

[0011] As a further embodiment of this utility model, an air injection tube is fixedly installed in the inner cavity of the adjusting rod. An air pump for providing gas is fixedly installed at one end of the air injection tube, and the air pump is fixedly located on the upper surface of the support frame. A fixing tube is fixedly connected to the other end of the air injection tube, and an air outlet tube for supplying gas to the airbag is rotatably connected to one end of the fixing tube.

[0012] As a further embodiment of this utility model, a crossbar is fixedly connected to the inner cavity of the support frame, and a bulldozing structure for enhancing the crack-clearing effect is fixedly installed on the outer wall of the crossbar. An electric push rod for adjusting the crack-clearing angle of the bulldozing structure is rotatably connected to one side of the bulldozing structure.

[0013] As a further embodiment of this utility model, the bulldozing structure includes an installation component, which is fixedly installed on one side of the crossbar. A bulldozing blade for loosening soil is rotatably installed in the inner cavity of the installation component. A guide block for guiding the movement direction of soil clods is fixedly installed on one side of the bulldozing blade. The guide block is used to scoop out the loosened impurities from the joint and prevent soil clods from accumulating at the front end of the bulldozing blade. A balance plate for ensuring the smooth movement of the bulldozing blade is fixedly installed at the bottom end of the bulldozing blade.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. When using this utility model, by setting a guide wheel, the adjustment rod is rotated by manually pulling the lever, which pulls the guide wheel and the digging blade to accurately enter the pavement joint. This effectively solves the problem that the digging blade is difficult to accurately enter the gap, improves the accuracy of the device operation, and, in conjunction with the expansion structure, allows the digging blade to retract into the inner cavity of the guide wheel. The guide wheel is used to replace the digging of the joint, reducing the contact between the digging blade and the pavement when the joint is connected, avoiding wear caused by unnecessary friction between the digging blade and the pavement, and extending the service life of the digging blade.

[0016] 2. When this utility model is used, the air pump inflates the airbag, which in turn drives the airbag to expand the digging blade for digging operations. It can also drive the rotating blade to rotate, thereby controlling the rotation of the digging blade for digging, achieving efficient joint cleaning operations. Moreover, during the gas transmission process, a small portion of the gas is ejected from the nozzle to perform preliminary powerful blowing and cleaning of impurities in the pavement joints, pre-removing some loose impurity particles. At the same time, the bulldozer blade can effectively clean up the impurities remaining at the joints, restoring the joints to a relatively clean state and improving the overall quality of pavement joint cleaning operations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a concrete pavement crack cleaning machine.

[0018] Figure 2 This is a structural diagram of the guide structure in a concrete pavement cleaning machine.

[0019] Figure 3 This is a structural diagram of the expansion structure in a concrete pavement cleaning machine.

[0020] Figure 4 This is a structural diagram of the air injection pipe in a concrete pavement cleaning machine.

[0021] Figure 5 This is a structural diagram of the expansion structure in a concrete pavement cleaning machine.

[0022] Figure 6 This is a structural diagram of the bulldozing structure in a concrete pavement cleaning machine.

[0023] In the diagram: 1. Support frame; 2. Push handle; 3. Mounting frame; 4. Moving wheel; 5. Excavator blade; 601. Fixed rod; 602. Adjusting rod; 603. Tie rod; 604. Connecting piece; 605. Guide wheel; 606. Airbag; 607. Moving rod; 608. Limiting plate; 609. Return spring; 610. Support plate; 611. Air injection pipe; 612. Air pump; 613. Fixed pipe; 614. Air outlet pipe; 615. Rotating blade; 616. Air nozzle; 617. Connecting rod; 618. Gear; 619. Gear ring; 620. Moving block; 7. Crossbar; 8. Electric actuator; 801. Mounting piece; 802. Bulldozer blade; 803. Guide block; 804. Balance plate; 9. Horizontal shaft. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figures 1-5 A concrete pavement joint cleaning machine includes a support frame 1, a push handle 2 fixedly installed on the top of the support frame 1, an installation frame 3 fixedly installed on one side of the support frame 1, a moving wheel 4 for driving the device fixedly installed at the bottom end of the installation frame 3 by bolts, a digging blade 5 for cleaning joints installed on the side of the support frame 1 away from the moving wheel 4, and guide structures for guiding the digging blade 5 into the joints installed on both sides of the digging blade 5.

[0026] The guiding structure includes a fixed rod 601, which is fixedly located at the top of the support frame 1. An adjusting rod 602 is rotatably connected to the center of the fixed rod 601. A pull rod 603 is fixedly connected to the top of the adjusting rod 602. A connecting piece 604 is fixedly installed at the bottom of the adjusting rod 602. A guide wheel 605 for guiding is rotatably installed in the inner cavity of the connecting piece 604. An expansion structure for controlling the extension and retraction of the digging blade 5 is fixedly installed in the inner cavity of the guide wheel 605. The expansion structure is fixedly connected to the digging blade 5. When the guide wheel 605 is guiding, the expansion structure drives the digging blade 5 to retract into the inner cavity of the guide wheel 605, thereby reducing the wear on the digging blade 5.

[0027] Specifically, the guide wheel 605 is made of silicone. The wear resistance of silicone reduces the wear of the device. In actual operation, by manually pulling the lever 603, the adjusting lever 602 rotates around the fixed lever 601 as the axis. The traction connector 604 drives the guide wheel 605 and the digging blade 5 to rotate synchronously. With the moving power provided by the moving wheel 4, the entire device is moved, so that the guide wheel 605 and the digging blade 5 can accurately enter the pavement joint, thus laying the foundation for the subsequent joint cleaning operation and ensuring its smooth progress.

[0028] Please see Figures 2-4 The expansion structure includes an airbag 606, which is fixedly located in the inner cavity of the guide wheel 605. Multiple moving blocks 620 for driving the digging blade 5 to move are fixedly installed on the outer wall of the airbag 606. Moving rods 607 are fixedly installed at both ends of the moving blocks 620, and one end of the moving rods 607 is fixedly connected to the digging blade 5.

[0029] To limit the movement range of the moving rod 607, limit plates 608 are rotatably installed on both sides of the airbag 606. Each limit plate 608 has multiple limit grooves in its inner cavity to provide movement for the moving rod 607, and the moving rod 607 is located in the limit groove.

[0030] Specifically, one end of the moving rod 607 passes through the limiting groove and is fixedly installed with a circular plate to prevent it from falling off. Each limiting groove has a fixedly installed return spring 609 for pulling the excavator 5 to retract and reset. The end of the return spring 609 away from the limiting plate 608 is fixedly installed with a support plate 610, and the support plate 610 is fixedly connected to the outer wall of the moving rod 607. When the airbag 606 deflates, the return spring 609 drives the support plate 610 to pull the moving rod 607 to pull the excavator 5 to retract into the inner cavity of the guide wheel 605.

[0031] An air injection tube 611 is fixedly installed in the inner cavity of the adjusting rod 602. An air pump 612 for supplying gas is fixedly installed at one end of the air injection tube 611, and the air pump 612 is fixedly located on the upper surface of the support frame 1. A fixing tube 613 is fixedly connected to the other end of the air injection tube 611. An air outlet tube 614 for supplying gas to the airbag 606 is rotatably connected to one end of the fixing tube 613 through a bearing.

[0032] The outer wall of the air outlet pipe 614 has multiple air outlets. A rotating blade 615 is fixedly sleeved at the center of the air outlet pipe 614, and the outer walls of both ends of the air outlet pipe 614 are fixedly connected to the limiting plate 608. Air is injected into the airbag 606 through the air outlet pipe 614. At the same time, the air pushes the rotating blade 615 to rotate, and then the rotating blade 615 drives the air outlet pipe 614 to drive the limiting plate 608 to rotate accordingly. This achieves effective control of the rotation of the excavator 5 during the crack cleaning operation, ensuring the efficiency and accuracy of the crack cleaning work.

[0033] Specifically, the air outlet pipe 614 is rotatably connected to the guide wheel 605, and each fixed pipe 613 has a jet nozzle 616 fixedly installed at the bottom end for assisting in the crack cleaning operation.

[0034] Please see Figure 1 , Figure 5 More specifically, to fix the adjustment angle of the adjusting rod 602, connecting rods 617 are fixedly installed at both ends of the adjusting rod 602. A gear 618 is fixedly connected to the ends of the two connecting rods 617 that are far apart. A gear ring 619 is fixedly installed in the inner cavity of the fixing rod 601, and the gear ring 619 meshes with the gear 618. The meshing action of the gear 618 and the gear ring 619 locks the adjusting rod 602, effectively limiting the further rotation of the adjusting rod 602, thereby fixing the adjustment angle of the adjusting rod 602. This prevents the working position and posture of the guide wheel 605 and the digging blade 5 from being affected by the accidental shaking or displacement of the adjusting rod 602 during the crack cleaning operation, improves the stability and reliability of the entire crack cleaning device during operation, and ensures that the crack cleaning operation can be carried out continuously, efficiently and accurately.

[0035] Example 2: Please refer to Figure 1 , Figure 6 The inner cavity of the support frame 1 is fixedly connected to a crossbar 7. The outer wall of the crossbar 7 is fixedly installed with a bulldozing structure to enhance the crack clearing effect. One side of the bulldozing structure is rotatably connected to an electric push rod 8 for adjusting the crack clearing angle of the bulldozing structure.

[0036] The bulldozing structure includes a mounting component 801, which is fixedly installed on one side of the crossbar 7 by bolts. The inner cavity of the mounting component 801 is rotatably mounted with a bulldozer blade 802 for loosening soil by bolts. A guide block 803 for guiding the movement of soil clods is fixedly installed on one side of the bulldozer blade 802. The guide block 803 guides the loosened impurities out of the joint and prevents soil clods from accumulating at the front end of the bulldozer blade 802. A balance plate 804 for ensuring the smooth movement of the bulldozer blade 802 is fixedly installed at the bottom end of the bulldozer blade 802.

[0037] Specifically, a horizontal shaft 9 is fixedly installed in the inner cavity of the support frame 1. One side of the horizontal shaft 9 is fixedly connected to the top of the electric push rod 8, and the bottom of the electric push rod 8 is rotatably connected to one side of the bulldozer blade 802. The electric push rod 8 pushes the bulldozer blade 802 to rotate, thereby changing the digging depth of the bulldozer blade 802.

[0038] The working principle of this utility model is as follows:

[0039] First, push the moving wheel 4 by connecting the support frame 1 with the push handle 2, and move the whole device to the vicinity of the pavement joint. With the manual push of the pull rod 603, the adjusting rod 602 is pulled to drive the guide wheel 605 to rotate against the pavement, so that the guide wheel 605 gradually moves into the inside of the joint. During this process, the excavator 5 retracts the inside of the guide wheel 605. When it moves to the appropriate position, release the push on the pull rod 603, and use the meshing of the gear 618 and the gear ring 619 to lock the adjustment angle of the adjusting rod 602, so as to ensure that the guide wheel 605 is always inside the joint.

[0040] The air pump 612 is started and connected to the air injection pipe 611 to inject air into the fixed pipe 613. Most of the gas passes through the air outlet pipe 614 and enters the inner cavity of the airbag 606. A small portion of the gas is ejected at high speed from the jet nozzle 616. The strong airflow of the ejected gas is used to initially blow away and clean the impurities in the joint, effectively removing some loose impurities. The gas entering the inner cavity of the airbag 606 gradually expands and expands. During the expansion of the airbag 606, it pushes the moving block 620. After being subjected to force, the moving block 620 drives the moving rod 607 to move along the limiting groove, thereby expanding the digging blade 5 and making the digging blade 5 protrude from the guide wheel 605. At the same time, the gas in the inner cavity of the airbag 606 drives the rotating blade 615 to rotate. The rotating blade 615 drives the air outlet pipe 614 to drive the limiting plate 608 to rotate, thereby controlling the digging blade 5 to perform rotating digging operations, effectively removing impurities inside the joint.

[0041] Finally, the electric actuator 8 pushes the bulldozer blade 802 to rotate, and in conjunction with the overall movement of the device, it digs out the debris that has accumulated at the joint from the excavator blade 5, pushing the joint back to a relatively clean state and completing the entire joint cleaning process.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A concrete pavement crack cleaning machine, comprising a support frame (1), characterized in that, A push handle (2) is fixedly installed on the top of the support frame (1), and a mounting frame (3) is fixedly installed on one side of the support frame (1). A moving wheel (4) for driving the device is fixedly installed at the bottom of the mounting frame (3). A digging blade (5) for cleaning the joint is installed on the side of the support frame (1) away from the moving wheel (4). A guide structure for guiding the digging blade (5) into the joint is installed on both sides of the digging blade (5). The guiding structure includes a fixed rod (601), which is fixedly located at the top of the support frame (1). An adjusting rod (602) is rotatably connected to the center of the fixed rod (601). A connecting piece (604) is fixedly installed at the bottom end of the adjusting rod (602). A guide wheel (605) for guiding is rotatably installed in the inner cavity of the connecting piece (604). An expansion structure for controlling the extension and retraction of the digging tool (5) is fixedly installed in the inner cavity of the guide wheel (605). The expansion structure is fixedly connected to the digging tool (5). When the guide wheel (605) is guiding, the expansion structure drives the digging tool (5) to retract into the inner cavity of the guide wheel (605), thereby reducing the wear on the digging tool (5).

2. A concrete pavement crack cleaning machine according to claim 1, characterized in that, The expansion structure includes an airbag (606), which is fixedly located in the inner cavity of the guide wheel (605). Multiple moving blocks (620) for driving the digging tool (5) to move are fixedly installed on the outer wall of the airbag (606). Moving rods (607) are fixedly installed at both ends of the moving blocks (620), and one end of the moving rods (607) is fixedly connected to the digging tool (5).

3. A concrete pavement crack cleaning machine according to claim 2, characterized in that, To limit the range of movement of the moving rod (607), the airbag (606) is rotatably mounted on both sides of the airbag (606). Each of the limiting plates (608) has multiple limiting grooves in its inner cavity to provide movement for the moving rod (607), and the moving rod (607) is located in the limiting groove.

4. A concrete pavement crack cleaning machine according to claim 1, characterized in that, An air injection tube (611) is fixedly installed in the inner cavity of the adjusting rod (602). An air pump (612) for supplying gas is fixedly installed at one end of the air injection tube (611), and the air pump (612) is fixedly located on the upper surface of the support frame (1). A fixing tube (613) is fixedly connected to the other end of the air injection tube (611), and an air outlet tube (614) for supplying gas to the airbag (606) is rotatably connected to one end of the fixing tube (613).

5. A concrete pavement crack cleaning machine according to claim 1, characterized in that, The inner cavity of the support frame (1) is fixedly connected to a crossbar (7), and the outer wall of the crossbar (7) is fixedly installed with a bulldozing structure for enhancing the crack clearing effect. One side of the bulldozing structure is rotatably connected to an electric push rod (8) for adjusting the crack clearing angle of the bulldozing structure.

6. A concrete pavement crack cleaning machine according to claim 5, characterized in that, The bulldozing structure includes an installation component (801), which is fixedly installed on one side of the crossbar (7). The inner cavity of the installation component (801) is rotatably equipped with a bulldozer blade (802) for loosening soil. A guide block (803) for guiding the movement direction of soil clods is fixedly installed on one side of the bulldozer blade (802). The guide block (803) guides the loosened impurities out of the joint, preventing soil clods from accumulating at the front end of the bulldozer blade (802). A balance plate (804) for ensuring the smooth movement of the bulldozer blade (802) is fixedly installed at the bottom end of the bulldozer blade (802).

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