Reinforcing and fixing mechanism for well lid support on asphalt pavement

Abstract

The utility model discloses a reinforcing and fixing mechanism for a well lid support on an asphalt pavement, and solves the problem that a well lid is easily pulled up by an ironing plate of a paver. A lengthened expansion bolt embedding hole (2) is formed in the top end face of the concrete prefabricated well body (1), a first bolt penetrating through hole (5) is formed in the bottom end face of an oval groove (4), an annular limiting ring (7) is arranged on the top end face of the concrete prefabricated well body (1), and arc-shaped limiting baffles (8) are arranged on the arc-shaped vertical face of the inner side of the annular limiting ring (7) at equal intervals of 90 radians. A well lid annular support (3) is arranged on the top end face of the annular limiting ring, the tail of a lengthened expansion bolt (12) sequentially penetrates through a bolt penetrating through hole (5) and a second bolt penetrating through hole (9) fixed to the support and then is arranged in a lengthened expansion bolt embedding hole (2), and the upper portion of the arc-shaped limiting baffle is connected to the inner side arc-shaped vertical face of the well lid annular support in an abutting mode. And the stability of the well lid support is greatly enhanced.

Description

[0001] A reinforcing fixing mechanism for a manhole cover support on an asphalt pavement Technical Field

[0002] The utility model relates to a manhole cover on an asphalt pavement, in particular to a fixing device for a manhole cover support when the asphalt pavement is paved. Background Art

[0003] The reconstruction construction process of asphalt pavement in old residential areas is as follows: remove the original roadbed and pavement, re-compact the pavement foundation, set up rainwater prefabricated wells, lay a water-stabilizing layer on the pavement foundation, install a manhole cover support on the upper port of the prefabricated well, install the manhole cover on the manhole cover support, lay an emulsified asphalt layer on the water-stabilizing layer, and use a paver to spread the asphalt pavement layer on the emulsified asphalt layer; during the above construction process, when the paver spreads asphalt pavement through the manhole cover, the screed of the paver often pulls up the manhole cover, causing the paving asphalt oil to flow into The paver needs to stop and put the manhole cover back on the manhole cover support, and then return the paver to its original position for re-paving. In addition, the connection between the existing manhole cover support and the top of the prefabricated manhole is fixed by conventional expansion bolts. Due to the heavy weight of the paver screed, there is still up and down vibration during operation, which often causes the connection between the manhole cover support and the prefabricated manhole body to become looser. How to design a reinforcing fixing mechanism for the manhole cover support has become a problem that needs to be solved at the paving site. Summary of the invention

[0004] The utility model provides a reinforcing fixing mechanism for a manhole cover support on an asphalt pavement, which solves the technical problem that the ironing plate of a paver can easily pull up the manhole cover.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A reinforcing fixing mechanism for a manhole cover support on an asphalt pavement comprises a prefabricated concrete manhole body (1), a manhole cover annular support and a manhole cover, wherein an extended expansion bolt embedding hole is arranged on the top surface of the prefabricated concrete manhole body, an elliptical groove is arranged on the top surface of the manhole cover annular support, a first bolt penetration hole is arranged on the bottom surface of the elliptical groove, an annular limiting ring is arranged on the top surface of the prefabricated concrete manhole body, a second bolt penetration hole for support fixation is arranged on the top surface of the annular limiting ring, arc-shaped limiting baffles are arranged at equal intervals of 90 arcs on the inner arc-shaped vertical surface of the annular limiting ring, and the manhole cover annular support is arranged on the top surface of the annular limiting ring, the tail of the extended expansion bolt passes through the first bolt penetration hole and the second bolt penetration hole for support fixation in sequence and is then arranged in the extended expansion bolt embedding hole, and the upper part of the arc-shaped limiting baffle abuts against the inner arc-shaped vertical surface of the manhole cover annular support.

[0007] A manhole cover connecting hinge seat is arranged on the manhole cover annular support, a manhole cover connecting hinge is arranged on the manhole cover, and the manhole cover is hinged to the manhole cover connecting hinge seat through the manhole cover connecting hinge.

[0008] The utility model arranges a limiting ring between the prefabricated concrete well body and the well cover support to limit the front, back, left and right movement of the well cover annular support, and strengthens and fixes the well cover support by lengthening the expansion bolts, thereby greatly enhancing the stability of the well cover support and allowing the paving of the asphalt pavement to proceed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model;

[0010] Figure 2 It is a diagram of the matching relationship between the concrete prefabricated well body 1 and the annular limiting ring 7 of the utility model;

[0011] Figure 3 It is a structural schematic diagram of the manhole cover 10 of the utility model. DETAILED DESCRIPTION

[0012] The utility model is described in detail below with reference to the accompanying drawings:

[0013] A reinforcing fixing mechanism for a manhole cover support on an asphalt pavement comprises a prefabricated concrete manhole body 1, a manhole cover annular support 3 and a manhole cover 10, wherein an extended expansion bolt embedding hole 2 is arranged on the top surface of the prefabricated concrete manhole body 1, an elliptical groove 4 is arranged on the top surface of the manhole cover annular support 3, a first bolt penetration hole 5 is arranged on the bottom surface of the elliptical groove 4, the elliptical groove 4 is substantially an elliptical countersunk hole, the first bolt penetration hole 5 is arranged corresponding to the extended expansion bolt embedding hole 2, and generally four pairs of through holes for the extended expansion bolt 12 to penetrate are arranged, an annular limiting ring 7 is arranged on the top surface of the prefabricated concrete manhole body 1, a second bolt penetration hole 9 for support fixing is arranged on the top surface of the annular limiting ring 7, and a curved vertical surface on the inner side of the annular limiting ring 7 is provided. Arc-shaped limit baffles 8 are arranged at equal intervals of 90 degrees, and a manhole cover annular support 3 is arranged on the top surface of the annular limit ring 7. The tail end of the extended expansion bolt 12 passes through the bolt connection hole 5 and the second bolt connection hole 9 for support fixation in turn and is arranged in the extended expansion bolt embedding hole 2. The upper part of the arc-shaped limit baffle 8 is abutted against the inner arc-shaped vertical surface of the manhole cover annular support 3; the extended expansion bolt 12 fixes the annular limit ring 7 and the manhole cover annular support 3 more firmly on the top surface of the concrete prefabricated well body 1. At the same time, four arc-shaped limit baffles 8 are arranged around the inner circle of the manhole cover annular support 3 at an interval of 90 degrees, which limits the manhole cover annular support 3 in the front, back, left and right directions, thereby improving the vibration resistance of the manhole cover support when the ironing plate of the paver passes by.

[0014] A manhole cover connecting hinge seat 6 is arranged on the manhole cover annular support 3, and a manhole cover connecting hinge 11 is arranged on the manhole cover 10, and the manhole cover 10 is hinged with the manhole cover connecting hinge seat 6 through the manhole cover connecting hinge 11; when the spreading machine starts to work, it moves forward, and the asphalt oil is transmitted to the rear of the machine. During the paving process, the oil temperature of the asphalt oil is relatively high, which will produce smoke. The working radius behind the machine is relatively large, and the line of sight below the equipment is not enough to see the state of the road manhole cover. If the manhole cover under the spreading machine is displaced, the oil behind the spreading machine will flow into the well while the manhole cover is displaced, causing the facilities in the well to be contaminated; the fixing method of the existing manhole cover support is relatively low in firmness, especially when the subsequent roller is compacting the road surface, it is more likely that the manhole cover support will shake violently left and right, resulting in the compaction degree around the manhole cover failing to meet the requirements; the utility model overcomes the problem of the left and right shaking of the manhole cover support through the arrangement of four limit plates, and improves the compaction degree around the manhole cover.

Claims

1. A reinforcing fixing mechanism for a manhole cover support on an asphalt pavement, comprising a prefabricated concrete manhole body (1), a manhole cover annular support (3) and a manhole cover (10), wherein an extended expansion bolt embedding hole (2) is provided on the top surface of the prefabricated concrete manhole body (1), an elliptical groove (4) is provided on the top surface of the manhole cover annular support (3), and a first bolt penetration hole (5) is provided on the bottom surface of the elliptical groove (4), characterized in that: An annular limiting ring (7) is arranged on the top surface of the prefabricated concrete well body (1), a second bolt through hole (9) fixed to a support is arranged on the top surface of the annular limiting ring (7), arc-shaped limiting baffles (8) are arranged at equal intervals of 90 arcs on the inner arc-shaped vertical surface of the annular limiting ring (7), a well cover annular support (3) is arranged on the top surface of the annular limiting ring (7), the tail of the extended expansion bolt (12) passes through the first bolt through hole (5) and the second bolt through hole (9) fixed to the support in sequence, and is then arranged in the extended expansion bolt embedding hole (2), and the upper part of the arc-shaped limiting baffle (8) is abutted against the inner arc-shaped vertical surface of the well cover annular support (3).

2. A reinforcing fixing mechanism for a manhole cover support on an asphalt pavement according to claim 1, characterized in that: A manhole cover connecting hinge seat (6) is provided on the manhole cover annular support (3), a manhole cover connecting hinge (11) is provided on the manhole cover (10), and the manhole cover (10) is hingedly connected to the manhole cover connecting hinge seat (6) via the manhole cover connecting hinge (11).

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