Asphalt coring hole backfilling and tamping device

Abstract

The utility model discloses an asphalt coring hole backfilling and tamping device which comprises a drill rod, the top of the drill rod is connected with the output end of an electric pick, external threads are arranged on the bottom side of the drill rod, a tamping plate comprises a sleeve, a reinforcing ring and a plate body, the center position of the top of the plate body is fixedly connected with the bottom end of the sleeve, and an internal thread groove is formed in the top end of the sleeve. The drill rod penetrates into the internal thread groove and is in threaded connection with the sleeve; a connecting handle of the electric pick is sleeved with a supporting assembly, the supporting assembly comprises a supporting ring, supporting rods and a sliding sleeve, the connecting handle is sleeved with the sliding sleeve, the supporting ring is sleeved with the sliding sleeve, the inner wall of the supporting ring is attached to the outer wall of the sliding sleeve, and the multiple supporting rods are fixed to the outer wall of the supporting ring in a surrounding mode. According to the utility model, the tamping plate connected with the electric pick is adopted, hole backfilling and tamping are carried out by utilizing the vibration tamping capacity of the electric pick, the tamping efficiency is improved, the supporting assembly consisting of the supporting ring, the supporting rod and the sliding sleeve is introduced, the vertical force application of the electric pick is ensured, and the uniform stress of each layer of filler is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to road construction technical field, concretely is a kind of asphalt coring backfill tamping device. BACKGROUND

[0002] In asphalt pavement construction, compaction degree is the key index for evaluating the quality of asphalt pavement, and the core drilling method is the main method for detecting the compaction degree of asphalt pavement. After highway asphalt pavement core drilling sampling, holes are left on the pavement, and the existing hole filling method usually uses the same material as the asphalt surface layer, fills layer by layer, and directly compacts with a small hammer. This method not only takes time and effort, but also is difficult to control the position of the falling hammer and the compaction degree. The filled pavement is difficult to achieve the compaction degree of the original pavement, and the pavement is prone to rutting and other diseases. Manual backfilling and tamping have great randomness, and it is often difficult to control the compaction degree and compaction is insufficient. Vehicle rolling during later vehicle driving can cause the filling material in the core hole to scatter, and thus can cause the pavement to gradually develop holes. The backfilling position is prone to become a burst point causing pavement damage, affecting driving safety. SUMMARY

[0003] The utility model aims at providing a kind of asphalt coring backfill tamping device, adopt the tamping board of connecting electric grab, utilize the vibration compaction capacity of electric grab to carry out hole backfill tamping, improve tamping efficiency, introduce support assembly composed of support ring, support rod and sliding sleeve, ensure that electric grab exerts force vertically, ensure that each layer of filler is uniformly stressed, and solve the problems in the prior art.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] An asphalt coring backfill tamping device includes a drill rod, the top of the drill rod is connected to the output end of an electric grab, the bottom side of the drill rod is provided with external threads, the tamping board includes a sleeve, a reinforcing ring and a plate body, the top center of the plate body is fixedly connected to the bottom end of the sleeve, the top end of the sleeve is provided with internal thread grooves, the drill rod penetrates the internal thread grooves and is threadedly connected to the sleeve;

[0006] A support assembly is sleeved on the connecting handle of the electric grab, the support assembly includes a support ring, a support rod and a sliding sleeve, the sliding sleeve is sleeved outside the connecting handle, the support ring is sleeved outside the sliding sleeve, the inner wall of the support ring is in close contact with the outer wall of the sliding sleeve, and a plurality of support rods are fixedly arranged around the outer wall of the support ring.

[0007] Preferably, a protective pad is bonded to the bottom of the plate body.

[0008] Preferably, a rubber gasket is arranged on the top surface of the sleeve.

[0009] Preferably, a plurality of reinforcing rings are arranged on the outer wall of the sleeve, and the sleeve is connected to the plate body through the reinforcing rings.

[0010] Preferably, a slide rod is fixed on the outer wall of the slide sleeve, the slide rod is arranged longitudinally, the cross section of the slide rod is wedge-shaped, the wider side of the slide rod faces the outside of the slide sleeve, and the inner wall of the supporting ring is provided with a sliding groove matched with the slide rod.

[0011] Preferably, a shock-absorbing rubber pad is arranged on the contact surface of the slide sleeve and the connecting handle.

[0012] Preferably, the supporting rod is arranged obliquely, and a supporting leg is fixed to the bottom end of the supporting rod.

[0013] Preferably, a limiting ring is fixed to the top surface and the bottom surface of the slide sleeve.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. The utility model discloses a tamping plate connected with an electric grab, uses the vibration tamping capacity of the electric grab to carry out hole backfill tamping, improves tamping efficiency, makes the hole more compact, ensures that the compaction degree meets design and specification requirements, avoids the problem that the compaction degree is difficult to control in the traditional method, reduces the randomness of manual operation, and reduces the risk of insufficient compaction.

[0016] 2. The utility model discloses a supporting assembly composed of a supporting ring, a supporting rod and a slide sleeve, ensures that the electric grab exerts force vertically, guarantees that each layer of filler bears force evenly, and improves tamping effect; the supporting rod is arranged obliquely and is provided with a supporting leg, and the placing stability is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure assembly drawing of the utility model;

[0018] Figure 2 It is the disassembling drawing of the drill rod and tamping plate of the utility model;

[0019] Figure 3 It is the axonometric drawing of the supporting assembly of the utility model;

[0020] Figure 4 It is the disassembling drawing of the supporting assembly of the utility model.

[0021] In the drawing: 1, drill rod; 2, tamping plate; 3, sleeve; 4, reinforcing ring; 5, plate body; 6, protective pad; 7, rubber washer; 8, connecting handle; 9, supporting ring; 10, supporting rod; 11, slide sleeve; 12, shock-absorbing rubber pad; 13, limiting ring; 14, slide rod; 15, sliding groove; 16, supporting leg; 17, electric grab; 18, internal thread groove. DETAILED DESCRIPTION

[0022] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of the utility model protection.

[0023] In order to solve the problem of insufficient filling force of artificial ramming in the prior art, the following technical scheme is given, please refer to Figures 1-4 ;

[0024] A kind of asphalt coring backfill ramming device, including drill rod 1, it is characterized in that: the top of drill rod 1 is connected with the output end of electric grab 17, drill rod 1 bottom is equipped with external thread, drill rod 1 is connected by thread and hits rammer plate 2.

[0025] Hit rammer plate 2 includes sleeve 3, reinforcing ring 4 and plate body 5, plate body 5 top central position is fixedly connected with the bottom end of sleeve 3, a plurality of reinforcing rings 4 are fixed on the outer wall of sleeve 3, sleeve 3 is connected with plate body 5 by reinforcing ring 4, reinforcing ring 4 is used to improve the rigidity and deformation resistance of sleeve 3 and plate body 5.

[0026] Drill rod 1, sleeve 3, reinforcing ring 4 and plate body 5 are all made of alloy material, to increase the strength and durability of overall structure.

[0027] Since the diameter of general asphalt coring hole is about 10 centimeters, therefore the diameter of plate body 5 needs to be slightly less than 10 centimeters to smoothly enter the coring hole.

[0028] Plate body 5 bottom is equipped with protective pad 6, the bottom surface of protective pad 6 has certain slip resistance, can further improve the friction between asphalt mixture, ensure the ramming effect, on the other hand, after ramming is finished, the asphalt mixture adhered to the bottom surface of plate body 5 can be cleaned by removing protective pad 6, so as to save operation time and manpower.

[0029] Sleeve 3 is equipped with internal thread groove 18, sleeve 3 is connected with drill rod 1 by thread, the external thread of drill rod 1 bottom adopts reinforced thread design, such as trapezoidal thread or sawtooth thread, these thread forms have better shear resistance than ordinary thread, can effectively prevent loosening during vibration.

[0030] Rubber gasket 7 is arranged on the top surface of sleeve 3, can help to absorb part of vibration energy, reduce the vibration amount transmitted to sleeve 3 and plate body 5, so as to improve the stability when hitting rammer.

[0031] The connecting handle 8 of the electric pick 17 is sleeved with a supporting assembly, the supporting assembly comprises a supporting ring 9, a supporting rod 10 and a sliding sleeve 11, the outer part of the connecting handle 8 is sleeved with the sliding sleeve 11, the sliding sleeve 11 is sleeved with the supporting ring 9, the inner wall of the supporting ring 9 is attached to the outer wall of the sliding sleeve 11, three supporting rods 10 are fixedly arranged on the outer wall of the supporting ring 9 in a surrounding manner, and the bottom end of each supporting rod 10 is fixedly connected with a supporting leg 16.

[0032] Specifically, the electric pick 17 is limited by the supporting ring 9, the supporting rod 10 and the sliding sleeve 11 to be perpendicular to the ground, so that the plate body 5 driven by the electric pick 17 can exert uniform impact force on each layer of filling material, the filling material is uniformly stressed, and the ramming effect is improved.

[0033] The supporting rod 10 is arranged in an inclined manner, so that the placing stability can be improved.

[0034] After each layer of asphalt mixed filling material is rammed, the plate body 5 is lifted, so that the drill rod 1 and the electric pick 17 are lifted correspondingly, at this time, the sliding sleeve 11 slides upward in the supporting ring 9, but the electric pick 17 can still maintain a vertical impact angle through the supporting ring 9 during the ramming process, so that the ramming effect is ensured.

[0035] The contact surface between the sliding sleeve 11 and the connecting handle 8 is provided with a shock-absorbing rubber pad 12, so that the vibration is avoided from being transmitted to the supporting ring 9, the supporting rod 10 and the sliding sleeve 11, and the supporting stability is affected.

[0036] The outer wall of the sliding sleeve 11 is fixedly connected with a sliding rod 14, the sliding rod 14 is arranged in a longitudinal manner, the cross section of the sliding rod 14 is in a wedge shape, the wider side of the sliding rod 14 faces the outer side of the sliding sleeve 11, the inner wall of the supporting ring 9 is provided with a sliding groove 15 matched with the sliding rod 14, and when the sliding sleeve 11 moves longitudinally, the sliding rod 14 can avoid the rotation of the sliding sleeve 11 and the electric pick 17 during the ramming process, so that the ramming effect is reduced.

[0037] The top surface and the bottom surface of the sliding sleeve 11 are fixedly connected with a limiting ring 13, so that the sliding sleeve 11 is prevented from being separated from the supporting ring 9.

[0038] Working principle: Before use, the hole is cleaned, and loose materials are removed, so that the hole wall is firm and neat, the bottom surface is stable and flat, and the adhesion between the filling material and the hole wall is enhanced by uniformly brushing the inner wall and the bottom of the hole with quick-cracking modified emulsified asphalt tack coat. Next, the hole is filled layer by layer with hot-mixed asphalt mixture, and each layer is rammed after filling.

[0039] The top of the drill rod 1 is connected with the output end of the electric grab 17, the sliding sleeve 11 is sleeved with the connecting handle 8, finally the tamper plate 2 is installed, the supporting rod 10 is placed on the ground with the supporting leg 16, and the plate body 5 is aligned with the hole; the electric grab 17 is started, the vibration level is adjusted, the initial tamping is carried out at a small power first, then the power is increased for re-tamping, after each tamping is completed, the tamper plate 2 is lifted together with the electric grab 17, at this time the sliding sleeve 11 moves along the sliding groove 15 in the supporting ring 9, but the vertical angle of the electric grab 3 is always maintained, until the tamping work is completed.

[0040] Finally, the compaction degree is detected by using the asphalt nuclear-free density instrument. The instrument is based on the proportional relationship between dielectric constant and density, and the dielectric constant of the compacted asphalt mixture is tested by generating a detection magnetic field through an induction plate, and an electronic component converts into a density reading. Users can directly obtain the corresponding compaction degree value on the display screen, and stop the tamping work after ensuring that the compaction degree standard required by the design and specification is reached.

[0041] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0042] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application.

Claims

1. A device for backfilling and compacting asphalt core holes, comprising a drill rod (1), characterized in that: The top of the drill rod (1) is connected to the output end of the electric pick (17). The bottom side of the drill rod (1) is provided with an external thread. The tamping plate (2) includes a sleeve (3), a reinforcing ring (4) and a plate (5). The top center of the plate (5) is fixedly connected to the bottom end of the sleeve (3). The top of the sleeve (3) is provided with an internal thread groove (18). The drill rod (1) passes through the internal thread groove (18) and is threadedly connected to the sleeve (3). A support assembly is fitted on the connecting handle (8) of the electric pick (17). The support assembly includes a support ring (9), a support rod (10), and a sliding sleeve (11). The sliding sleeve (11) is fitted onto the outside of the connecting handle (8). The support ring (9) is fitted onto the outside of the sliding sleeve (11). The inner wall of the support ring (9) is in contact with the outer wall of the sliding sleeve (11). Several support rods (10) are fixed around the outer wall of the support ring (9).

2. The device for backfilling and compacting asphalt core holes according to claim 1, characterized in that: The bottom of the plate (5) is provided with a protective pad (6).

3. The device for backfilling and compacting asphalt core holes according to claim 2, characterized in that: A rubber washer (7) is provided on the top surface of the sleeve (3).

4. The device for backfilling and compacting asphalt core holes according to claim 3, characterized in that: The sleeve (3) has several reinforcing rings (4) on its outer wall, and the sleeve (3) is connected to the plate (5) through the reinforcing rings (4).

5. The device for backfilling and compacting asphalt core holes according to claim 4, characterized in that: A sliding rod (14) is fixed on the outer wall of the sliding sleeve (11). The sliding rod (14) is arranged longitudinally and has a wedge-shaped cross section. The wider side of the sliding rod (14) faces the outside of the sliding sleeve (11). A groove (15) adapted to the sliding rod (14) is provided on the inner wall of the support ring (9).

6. The device for backfilling and compacting asphalt core holes according to claim 5, characterized in that: The contact surface between the sliding sleeve (11) and the connecting handle (8) is provided with a shock-absorbing rubber pad (12).

7. The device for backfilling and compacting asphalt core holes according to claim 6, characterized in that: The support rod (10) is inclined, and the bottom end of the support rod (10) is fixed with a foot (16).

8. The device for backfilling and compacting asphalt core holes according to claim 7, characterized in that: Limiting rings (13) are fixed on both the top and bottom surfaces of the sliding sleeve (11).

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