A concrete vibration device for repairing urban cement pavement

Abstract

The present invention provides a concrete vibration device for repairing urban cement pavement, which belongs to the technical field of concrete construction equipment. It includes a fuselage, a plurality of brackets arranged on the fuselage, a vibration plate and a driving mechanism for driving the vibration plate to reciprocate longitudinally, the driving mechanism includes a housing and a rotating shaft, a valve hole is provided on the rotating shaft, a tamping rod is splined in the valve hole, the lower end of the tamping rod extends out from under the vibration plate, a connecting rod with a diameter smaller than the tamping rod is fixedly provided on the top of the tamping rod, a valve block slidably connected in the valve hole is fixedly provided on the top of the connecting rod, an upper hydraulic hole and a lower hydraulic hole are respectively provided on the rotating shaft, the upper hydraulic hole is connected to the first hydraulic cavity and the valve hole above the valve block, and the lower hydraulic hole is connected to the second hydraulic cavity and the valve hole below the valve block. The present invention has the advantages of being able to form a thicker clear cement layer on the concrete surface.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete construction equipment and relates to a concrete vibration device for repairing urban cement pavement. Background Art

[0002] Newly laid urban cement pavement will form pits of varying degrees after being used for a period of time. When repairing, it is necessary to first cut the concrete at the pitted part, and then pour new concrete. When pouring new concrete, the bubbles must be removed. Since the construction area is often small, traditional equipment is not convenient for construction. For example, a vibration pump can eliminate bubbles, but it is easy to cause concrete to overflow to areas outside the repair area, which not only affects the appearance, but also the new bulges will aggravate the damage to the road surface. Moreover, in order to cover the larger particles of aggregate, it is generally necessary to scrape a layer of clear cement after or before the concrete solidifies to make the road surface smooth. It can be seen that the existing practice is inefficient and the road quality is poor. Therefore, construction equipment based on cement pavement repair is needed to improve quality and efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a concrete vibration device for urban cement pavement repair in view of the above problems existing in the prior art. The technical problem to be solved by the present invention is how to form a thicker clear cement layer on the concrete surface during the pavement repair process.

[0004] The purpose of the present invention can be achieved through the following technical solutions: A concrete vibration device for repairing urban cement pavement, characterized in that it includes a body, a plurality of brackets arranged on the body, a vibration plate and a driving mechanism for driving the vibration plate to reciprocate longitudinally, the driving mechanism includes a shell and a rotating shaft, the upper and lower ends of the shell are respectively provided with an upper contraction portion and a lower contraction portion, the rotating shaft is longitudinally slidably connected to the shell, a counterweight block is fixedly arranged outside the rotating shaft, a first hydraulic chamber is formed between the upper end surface of the counterweight block and the upper contraction portion, a second hydraulic chamber is formed between the lower end surface of the counterweight block and the lower contraction portion, and a first hydraulic chamber near the first contraction portion is arranged outside the counterweight block A rotor, a second rotor close to the second contraction portion is arranged outside the counterweight block, a distance is provided between the first rotor and the second rotor, a first stator close to the first contraction portion is arranged on the inner wall of the shell, a second stator close to the second contraction portion is arranged on the inner wall of the shell, a distance is provided between the first stator and the second stator, the lower end of the rotating shaft is connected to the vibration plate through a bearing, a plurality of guide components are arranged between the vibration plate and the fuselage, a guide cylinder is arranged on the shell, a guide hole is arranged on the guide cylinder, a wave-shaped guide groove connected end to end is opened on the inner wall of the guide hole, and a plurality of guide protrusions located in the guide groove are fixedly arranged on the rotating shaft;

[0005] A valve hole is provided on the rotating shaft, a ramming rod is spline-connected in the valve hole, the lower end of the ramming rod extends out from under the vibration plate, a connecting rod with a diameter smaller than the ramming rod is fixedly provided on the top of the ramming rod, a valve block slidably connected in the valve hole is fixedly provided on the top of the connecting rod, an upper hydraulic hole and a lower hydraulic hole respectively located at the upper and lower ends of the valve block are provided on the rotating shaft, the upper hydraulic hole is connected to the first hydraulic chamber and the valve hole above the valve block, and the lower hydraulic hole is connected to the second hydraulic chamber and the valve hole below the valve block.

[0006] Furthermore, the bracket includes a transverse telescopic rod and a longitudinal telescopic rod connected to the transverse telescopic rod, the transverse telescopic rod is connected to the fuselage, and a roller is provided at the lower end of the longitudinal telescopic rod.

[0007] Furthermore, the guide assembly includes a pull rod fixed on the vibration plate, a sliding hole adapted to the pull rod is opened on the fuselage, and a buffer spring is connected between the pull rod and the fuselage.

[0008] Furthermore, a pressure cap is fixedly provided at the lower end of the tamping rod, and the pressure cap is in a cylindrical shape with a lower end diameter greater than an upper end diameter.

[0009] Furthermore, the pressing cap is a mesh structure.

[0010] Furthermore, the upper and lower ends of the counterweight block are both conical, and the shell at the upper contraction portion has an upper guide conical surface that matches the outer contour of the upper end of the counterweight block, and the shell at the lower contraction portion has a lower guide conical surface that matches the outer contour of the lower end of the counterweight block.

[0011] Furthermore, a return spring is connected between the valve block and the rotating shaft.

[0012] Furthermore, a pull ring for traction is provided on the outer wall of the fuselage.

[0013] Furthermore, the distance between the first rotor and the second rotor is equal to the distance between the first stator and the second stator.

[0014] Furthermore, the outer edge of the vibration plate is higher than the middle part of the vibration plate to form a guide part.

[0015] The width and height of the bracket can be adjusted by the horizontal telescopic rod and the vertical telescopic rod respectively, so that the roller can roll on the cement road surface outside the repair area, and the vibration of the vibration plate can act on the surface of the new concrete to prevent the concrete from being squeezed onto the old concrete road surface outside the repair area.

[0016] Generally speaking, the repair area is rectangular, and a cable is connected to the pull ring to pull the device along the repair area to adjust the vibration position.

[0017] The reciprocating motion of the vibration plate is achieved through the cooperation of the wavy guide groove and the guide protrusion on the rotating shaft, that is, the rotating shaft is accompanied by longitudinal reciprocating motion due to the wavy guide groove during rotation, and the vibration plate is driven to reciprocate during the longitudinal reciprocating motion of the rotating shaft, so that the large-size aggregate in the concrete tends to sink and form a clear concrete layer on its surface. The bubbles in it must be removed to improve its strength and ensure quality.

[0018] The excitation structure between the counterweight block and the shell includes a first rotor, a second rotor, a first stator and a second stator. Under normal conditions, the first stator corresponds to the first rotor, and the second stator corresponds to the second rotor. At this time, the rotating shaft is located at the midpoint of the reciprocating motion. At this time, the torque of the rotating shaft is the largest due to the maximum magnetic field cutting range. When the counterweight block moves up on this basis, the spacing between the first rotor and the second rotor partially covers the first stator, and the spacing between the first stator and the second stator partially covers the second rotor, so that the excitation effective area gap and the torque of the rotating shaft are reduced. When the counterweight block moves up and down on this basis, the same is true. This structural design can make the torque of the rotating shaft change continuously, and the irregular rotation speed can improve the vibration effect, and can also buffer the longitudinal reciprocating motion of the rotating shaft. Most traditional vibration mechanisms adopt an eccentric structure, which will cause unstable operation of the equipment and greater damage to components. In this scheme, since the equipment is assumed to be towed on a solidified road surface, the vibration intensity should not be too large to avoid concrete overflowing onto the old concrete road surface, and it can also make the towing device move easily and the path easy to control.

[0019] In order to further increase the thickness of the clear concrete layer on the concrete surface so that it does not require subsequent coating, a tamping rod is provided on the rotating shaft. The longitudinal reciprocating motion of the counterweight block drives the liquid pressure in the first hydraulic chamber and the second hydraulic chamber to change, thereby causing the tamping rod to reciprocate longitudinally. The amplitude of the longitudinal reciprocating motion of the tamping rod is much greater than that of the vibration rod, which can compact the concrete, press down large-size aggregates, eliminate bubbles in a larger range, and increase the thickness of the clear concrete.

[0020] Since the tamping rod is driven by hydraulic pressure to reciprocate longitudinally, it is a soft drive with weak strength. In order to improve the strength of tamping concrete, the upper and lower ends of the counterweight block are conical, and the shell at the upper contraction part has an upper guide cone surface that matches the outer contour of the upper end of the counterweight block, and the shell at the lower contraction part has a lower guide cone surface that matches the outer contour of the lower end of the counterweight block. This setting can make the counterweight block move longitudinally. The closer it is to the extreme position of the motion range, the smaller the flow gap between the first hydraulic chamber or the second hydraulic chamber and the inner cavity of the shell will be, and the movement of the outer limit position of the counterweight block will drive the first hydraulic chamber or the second hydraulic chamber to move. The pressure increase is greater, and the pressure increase is more obvious and rapid, which can increase the impact force of the tamping rod and expand the telescopic range; specifically: when the counterweight block moves up, the flow gap between the first hydraulic chamber and the inner cavity of the shell will gradually decrease, and the pressure of the counterweight block moving down will suddenly increase, and the reaction will be more sensitive; when the counterweight block moves down, the flow gap between the second hydraulic chamber and the inner cavity of the shell will gradually decrease, and the pressure in the second hydraulic chamber will increase significantly, and the amplitude of the tamping rod moving up will increase. It can be seen that the tamping rod will move up to a greater extent, and then move down to a greater extent, increasing the impact force, tamping strength and amplitude; the pressure cap can act on large-diameter aggregates to sink.

[0021] The circulation of hydraulic oil can dissipate heat for various components better. The first rotor and the second rotor can be permanent magnets, and the first stator and the second stator can be coils with the same winding direction, forming the structure of a traditional motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the device.

[0023] Figure 2 It is a schematic diagram of the internal structure of the fuselage.

[0024] Figure 3 It is a schematic diagram of the structure of the guide groove and the guide protrusion (expand the inner wall of the guide cylinder).

[0025] Figure 4 yes Figure 2 Enlarged view of part A in the figure.

[0026] In the figure, 1, fuselage; 11, pull ring; 2, bracket; 21, horizontal telescopic rod; 22, longitudinal telescopic rod; 23, roller; 31, shell; 32, rotating shaft; 33, upper contraction part; 34, lower contraction part; 35, counterweight; 36, first hydraulic chamber; 37, second hydraulic chamber; 38, first rotor; 39, second rotor; 41, first stator; 42, second stator; 43, guide cylinder; 44, guide groove; 45, guide protrusion; 46, valve hole; 47, ramming rod; 48, connecting rod; 51, valve block; 52, upper hydraulic hole; 53, lower hydraulic hole; 54, reset spring; 61, pull rod; 62, buffer spring; 7, pressure cap; 8, vibration plate. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0028] like Figures 1 to 4 As shown, it includes a fuselage 1, a plurality of brackets 2 arranged on the fuselage 1, a vibration plate 8 and a driving mechanism for driving the vibration plate 8 to reciprocate longitudinally, the driving mechanism includes a shell 31 and a rotating shaft 32, the upper and lower ends of the shell 31 are respectively provided with an upper contraction portion 33 and a lower contraction portion 34, the rotating shaft 32 is longitudinally slidably connected to the shell 31, a counterweight block 35 is fixedly arranged outside the rotating shaft 32, a first hydraulic chamber 36 is formed between the upper end surface of the counterweight block 35 and the upper contraction portion 33, a second hydraulic chamber 37 is formed between the lower end surface of the counterweight block 35 and the lower contraction portion 34, a first rotor 38 close to the first contraction portion is arranged outside the counterweight block 35, and a second hydraulic chamber 37 is arranged outside the counterweight block 35. The second rotor 39 of the contraction part, the first rotor 38 and the second rotor 39 are spaced apart from each other, a first stator 41 close to the first contraction part is arranged on the inner wall of the shell 31, a second stator 42 close to the second contraction part is arranged on the inner wall of the shell 31, and a space is arranged between the first stator 41 and the second stator 42, the lower end of the rotating shaft 32 is connected to the vibration plate 8 through a bearing, a plurality of guide components are arranged between the vibration plate 8 and the fuselage 1, a guide cylinder 43 is arranged on the shell 31, a guide hole is arranged on the guide cylinder 43, a wave-shaped guide groove 44 connected end to end is opened on the inner wall of the guide hole, and a plurality of guide protrusions 45 located in the guide groove 44 are fixedly arranged on the rotating shaft 32;

[0029] A valve hole 46 is provided on the rotating shaft 32, and a ramming rod 47 is splined in the valve hole 46. The lower end of the ramming rod 47 extends out from under the vibration plate 8. A connecting rod 48 with a diameter smaller than that of the ramming rod 47 is fixedly provided on the top of the ramming rod 47. A valve block 51 slidably connected to the valve hole 46 is fixedly provided on the top of the connecting rod 48. An upper hydraulic hole 52 and a lower hydraulic hole 53 are respectively provided on the rotating shaft 32, which are located at the upper and lower ends of the valve block 51. The upper hydraulic hole 52 communicates with the first hydraulic chamber 36 and the valve hole 46 above the valve block 51, and the lower hydraulic hole 53 communicates with the second hydraulic chamber 37 and the valve hole 46 below the valve block 51.

[0030] The bracket 2 includes a transverse telescopic rod 21 and a longitudinal telescopic rod 22 connected to the transverse telescopic rod 21 . The transverse telescopic rod 21 is connected to the body 1 . A roller 23 is disposed at the lower end of the longitudinal telescopic rod 22 .

[0031] The guide assembly includes a pull rod 61 fixed on the vibration plate 8 , a sliding hole adapted to the pull rod 61 is opened on the fuselage 1 , and a buffer spring 62 is connected between the pull rod 61 and the fuselage 1 .

[0032] A pressing cap 7 is fixedly provided at the lower end of the tamping rod 47. The pressing cap 7 is in a cylindrical shape with a lower end diameter greater than an upper end diameter. The pressing cap 7 is a mesh structure.

[0033] The upper and lower ends of the counterweight block 35 are both conical. The shell 31 at the upper contraction portion 33 has an upper guide cone surface that matches the outer contour of the upper end of the counterweight block 35, and the shell 31 at the lower contraction portion 34 has a lower guide cone surface that matches the outer contour of the lower end of the counterweight block 35.

[0034] A return spring 54 is connected between the valve block 51 and the rotating shaft 32 .

[0035] The outer wall of the fuselage 1 is provided with a pull ring 11 for traction.

[0036] The distance between the first rotor 38 and the second rotor 39 is equal to the distance between the first stator 41 and the second stator 42 .

[0037] The outer edge of the vibration plate 8 is higher than the middle portion of the vibration plate 8 to form a guide portion.

[0038] The width and height of the bracket 2 can be adjusted by the transverse telescopic rod 21 and the longitudinal telescopic rod 22 respectively, so that the roller 23 can roll on the cement road surface outside the repair area, and the vibration of the vibration plate 8 can act on the surface of the new concrete to prevent the concrete from being squeezed onto the old concrete road surface outside the repair area.

[0039] Generally speaking, the repair area is rectangular, and a cable is connected to the pull ring 11 to pull the device along the repair area to adjust the vibration position.

[0040] The reciprocating motion of the vibration plate 8 is achieved through the cooperation of the wavy guide groove 44 and the guide protrusion 45 on the rotating shaft 32, that is, the rotating shaft 32 is accompanied by longitudinal reciprocating motion due to the wavy guide groove 44 during the rotation process, and the vibration plate 8 is driven to reciprocate during the longitudinal reciprocating motion of the rotating shaft 32, so that the large-size aggregate in the concrete tends to sink, and a clear concrete layer is formed on its surface. The bubbles in it must be removed to improve its strength and ensure quality.

[0041] The excitation structure between the counterweight block 35 and the housing 31 includes a first rotor 38, a second rotor 39, a first stator 41 and a second stator 42. In normal conditions, the first stator 41 corresponds to the first rotor 38, and the second stator 42 corresponds to the second rotor 39. At this time, the rotating shaft 32 is located at the midpoint of the reciprocating motion. At this time, the torque of the rotating shaft 32 is the largest due to the maximum magnetic field cutting range. When the counterweight block 35 moves upward on this basis, the spacing between the first rotor 38 and the second rotor 39 partially covers the first stator 41, and the spacing between the first stator 41 and the second stator 42 partially covers the second rotor 39, so that the excitation is effective. Area gap, the torque of the rotating shaft 32 is reduced, and the same is true when the counterweight block 35 moves up and down on this basis. This structural design can make the torque of the rotating shaft 32 constantly change, and the irregular rotation speed can improve the vibration effect, and can also buffer the longitudinal reciprocating motion of the rotating shaft 32. Most traditional vibration mechanisms adopt eccentric structures, which will cause unstable operation of the equipment and greater damage to components. In this solution, since the equipment is assumed to be towed on a solidified road surface, the vibration intensity should not be too large to avoid concrete overflow onto the old concrete road surface. It can also make it easy to tow the device and the path is easy to control.

[0042] In order to further increase the thickness of the clear concrete layer on the concrete surface so that it does not require subsequent coating, a tamping rod 47 is provided on the rotating shaft 32. The longitudinal reciprocating motion of the counterweight block 35 drives the liquid pressure in the first hydraulic chamber 36 and the second hydraulic chamber 37 to change, thereby causing the tamping rod 47 to reciprocate longitudinally. The amplitude of the longitudinal reciprocating motion of the tamping rod 47 is much greater than that of the vibration rod, which can compact the concrete, press down large-size aggregates, eliminate bubbles in a larger range, and increase the thickness of the clear concrete.

[0043] Since the tamping rod 47 is driven by hydraulic pressure to reciprocate longitudinally, it is a soft drive with weak strength. In order to improve the strength of tamping concrete, the upper and lower ends of the counterweight block 35 are conical, and the shell 31 at the upper contraction part 33 has an upper guide cone surface adapted to the outer contour of the upper end of the counterweight block 35, and the shell 31 at the lower contraction part 34 has a lower guide cone surface adapted to the outer contour of the lower end of the counterweight block 35. This setting can make the counterweight block 35 move longitudinally. The closer it is to the extreme position of the motion range, the smaller the flow gap between the first hydraulic chamber 36 or the second hydraulic chamber 37 and the inner cavity of the shell 31 will be, and the first hydraulic chamber 36 or the second hydraulic chamber 37 will be driven during the movement of the outer limit position of the counterweight block 35. The pressure increase in the cavity 37 is greater, and the pressure increase is more obvious and rapid, which can increase the impact force of the tamping rod 47 and expand the telescopic range; specifically: when the counterweight block 35 moves up, the flow gap between the first hydraulic cavity 36 and the inner cavity of the shell 31 will gradually decrease, and the pressure of the counterweight block 35 moving down will suddenly increase, and the reaction will be more sensitive; when the counterweight block 35 moves down, the flow gap between the second hydraulic cavity 37 and the inner cavity of the shell 31 will gradually decrease, and the pressure in the second hydraulic cavity 37 will increase significantly, and the upward movement of the tamping rod 47 will increase. It can be seen that the tamping rod 47 will move up to a greater extent, and then move down to a greater extent, increasing the impact force, tamping strength and amplitude; the pressure cap 7 can act on large-diameter aggregates to sink.

[0044] The circulation of hydraulic oil can effectively dissipate heat for each component. The first rotor 38 and the second rotor 39 can be permanent magnets, and the first stator 41 and the second stator 42 can be coils with the same winding direction, forming the structure of a traditional motor.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A concrete vibration device for repairing urban cement pavement, characterized in that: The invention comprises a body (1), a plurality of brackets (2) arranged on the body (1), a vibration plate (8), and a driving mechanism for driving the vibration plate (8) to reciprocate longitudinally, the driving mechanism comprising a shell (31) and a rotating shaft (32), the upper and lower ends of the shell (31) respectively having an upper contraction portion (33) and a lower contraction portion (34), the rotating shaft (32) being longitudinally slidably connected to the shell (31), a counterweight block (35) being fixedly arranged outside the rotating shaft (32), a first hydraulic chamber (36) being formed between the upper end surface of the counterweight block (35) and the upper contraction portion (33), a second hydraulic chamber (37) being formed between the lower end surface of the counterweight block (35) and the lower contraction portion (34), a first rotor (38) being arranged outside the counterweight block (35) close to the first contraction portion, and a second hydraulic chamber (37) being arranged outside the counterweight block (35) close to the second contraction portion. a second rotor (39) at a contraction portion, a spacing between the first rotor (38) and the second rotor (39), a first stator (41) close to the first contraction portion is arranged on the inner wall of the shell (31), a second stator (42) close to the second contraction portion is arranged on the inner wall of the shell (31), a spacing between the first stator (41) and the second stator (42), a lower end of the rotating shaft (32) is connected to the vibration plate (8) via a bearing, a plurality of guide components are arranged between the vibration plate (8) and the body (1), a guide cylinder (43) is arranged on the shell (31), a guide hole is arranged on the guide cylinder (43), a wave-shaped guide groove (44) connected end to end is opened on the inner wall of the guide hole, and a plurality of guide protrusions (45) located in the guide groove (44) are fixedly arranged on the rotating shaft (32); The rotating shaft (32) is provided with a valve hole (46), a ramming rod (47) is splined in the valve hole (46), the lower end of the ramming rod (47) extends out from below the vibration plate (8), a connecting rod (48) having a diameter smaller than that of the ramming rod (47) is fixedly provided on the top of the ramming rod (47), a valve block (51) slidably connected to the valve hole (46) is fixedly provided on the top of the connecting rod (48), an upper hydraulic hole (52) and a lower hydraulic hole (53) are respectively provided on the rotating shaft (32) and are located at upper and lower ends of the valve block (51), the upper hydraulic hole (52) is connected to the first hydraulic chamber (36) and the valve hole (46) above the valve block (51), and the lower hydraulic hole (53) is connected to the second hydraulic chamber (37) and the valve hole (46) below the valve block (51).

2. A concrete vibration device for repairing urban cement pavement according to claim 1, characterized in that: The bracket (2) comprises a transverse telescopic rod (21) and a longitudinal telescopic rod (22) connected to the transverse telescopic rod (21), the transverse telescopic rod (21) being connected to the body (1), and a roller (23) being provided at the lower end of the longitudinal telescopic rod (22).

3. A concrete vibration device for repairing urban cement pavement according to claim 1 or 2, characterized in that: The guide assembly comprises a pull rod (61) fixed on the vibration plate (8), a sliding hole adapted to the pull rod (61) is provided on the fuselage (1), and a buffer spring (62) is connected between the pull rod (61) and the fuselage (1).

4. A concrete vibration device for repairing urban cement pavement according to claim 1 or 2, characterized in that: A pressure cap (7) is fixedly provided at the lower end of the tamping rod (47), and the pressure cap (7) is in a cylindrical shape with a lower end having a larger diameter than an upper end.

5. A concrete vibration device for repairing urban cement pavement according to claim 4, characterized in that: The pressing cap (7) is a mesh structure.

6. A concrete vibration device for repairing urban cement pavement according to claim 1 or 2, characterized in that: The upper and lower ends of the counterweight (35) are both conical, the shell (31) at the upper contraction portion (33) has an upper guide conical surface adapted to the outer contour of the upper end of the counterweight (35), and the shell (31) at the lower contraction portion (34) has a lower guide conical surface adapted to the outer contour of the lower end of the counterweight (35).

7. A concrete vibration device for repairing urban cement pavement according to claim 1 or 2, characterized in that: A return spring (54) is connected between the valve block (51) and the rotating shaft (32).

8. A concrete vibration device for repairing urban cement pavement according to claim 1 or 2, characterized in that: The outer wall surface of the fuselage (1) is provided with a pulling ring (11) for pulling.

9. A concrete vibration device for repairing urban cement pavement according to claim 1 or 2, characterized in that: The distance between the first rotor (38) and the second rotor (39) is equal to the distance between the first stator (41) and the second stator (42).

10. A concrete vibration device for repairing urban cement pavement according to claim 1 or 2, characterized in that: The outer edge of the vibration plate (8) is higher than the middle part of the vibration plate (8) to form a guide part.

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