CN112523047A - Highway subgrade maintenance pavement crack pouring method - Google Patents
Highway subgrade maintenance pavement crack pouring method Download PDFInfo
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- CN112523047A CN112523047A CN202011397809.4A CN202011397809A CN112523047A CN 112523047 A CN112523047 A CN 112523047A CN 202011397809 A CN202011397809 A CN 202011397809A CN 112523047 A CN112523047 A CN 112523047A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/096—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating and filling
Abstract
The invention discloses a method for filling cracks on a road bed maintenance pavement, which comprises the following steps: s1, manually cutting at the initial end of the pavement crack in advance to obtain a rectangular cutting groove with a given width, wherein the width of the rectangular cutting groove is 1.25-2 times of the average value of the actual width of the crack; s2, arranging the main cutter of the grooving mechanism in the groove pre-cut in the front, wherein the vertical distance between the highest point of the cutting track of the auxiliary cutter in the groove and the notch of the rectangular groove is not less than half of the depth of the rectangular groove; s3, when the vertical sliding rotating shaft drives the driving gear to move downwards, the driving gear jacks a pair of two driven gears with reset functions, wherein the two driven gears are symmetrically arranged on the left side and the right side of the driving gear; s4, after cutting, the cutting groove is cleaned by blowing, and dregs and chips are removed; and S5, injecting crack pouring glue into the cutting groove by using a sprinkling irrigation device. The construction method of the invention has excellent repairing effect on road cracks and longer durability when used for pouring cracks.
Description
Technical Field
The invention relates to the technical field of road engineering maintenance, in particular to a method for filling cracks on a road bed maintenance pavement.
Background
The urban road is used as an important urban infrastructure and is a passage for citizens to go out for life. Under the general condition, when the urban road with serious road surface damage is overhauled, the broken-line measures are adopted, the period is long, the urban congestion is aggravated to a certain extent, the urban road smoothness and the citizen life are influenced, the road surface crack is the most common road disease form, and when raining, rainwater enters the roadbed along the crack to cause the further damage or collapse of the road, so that the service life of the road is shortened. Research shows that cracks are mainly divided into two main categories according to different causes of the cracks: firstly, structural damage cracks are generated under the action of driving load; and the temperature cracks generated due to the temperature change of the asphalt surface layer comprise low-temperature shrinkage cracks and non-load cracks of temperature fatigue cracks. During daily maintenance, the road crack pouring glue is used for filling and repairing the two cracks, so that the sealant is well connected with the original asphalt concrete pavement to form a stretching effect of the property of the elastic expansion joint, the rain (snow) water and sundries invasion of the pavement is closed, the pavement damage speed is delayed, the roadbed damage is reduced, and a preventive maintenance effect is achieved. At present to crack filling, repair when road surface maintenance, usually cut into the groove of rectangle to the crack earlier to fully pour into the cementation of fissures glue, artifical direct handheld spray gun pours into the cementation of fissures glue into corresponding gap in, this kind of operation mode is easy operation, but the cementation of fissures glue of pouring drops easily, especially emerges from the crack easily when the day is hot, leads to the inside especially interior bottom vacuity of crack, leads to the cementation of fissures repairing effect relatively poor, the durability is not enough.
Disclosure of Invention
The invention aims to solve the problems of the prior art that the crack pouring method for the road subgrade maintenance road surface is provided, and the problems of poor repairing and maintenance effects and insufficient durability caused by the fact that the inside of a crack of the road surface, particularly the inner bottom, is empty after crack pouring and repairing in the prior art are effectively solved.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a method for pouring seams on a highway subgrade maintenance pavement, which comprises the following steps:
s1, manually cutting at the initial end of the pavement crack in advance to obtain a rectangular cutting groove with a given width, wherein the width of the rectangular cutting groove is 1.25-2 times of the average value of the actual width of the crack, and the length of the rectangular cutting groove is required to enable a cutting mechanism of crack pouring equipment to be normally arranged so as to continue cutting; the grooving mechanism comprises a main cutter and an auxiliary cutter which are arranged in front and back, wherein the main cutter continues to cut the rectangular grooving, and the auxiliary cutter cuts a rectangular side groove on the inner side wall of the rectangular grooving;
s2, arranging the main cutter of the grooving mechanism in the groove pre-cut in the front, wherein the vertical distance between the highest point of the cutting track of the auxiliary cutter in the groove and the notch of the rectangular groove is not less than half of the depth of the rectangular groove;
s3, a vertical sliding rotating shaft provided with a cylindrical gear is pushed downwards by a starting hydraulic rod, when the vertical sliding rotating shaft drives a driving gear to move downwards, the driving gear pushes a pair of driven gears which are symmetrically arranged on the left side and the right side and have a reset function, so that the two driven gears are pushed towards the side far away from each other, the auxiliary cutter coaxially and fixedly connected with the driven gears extends outwards, and the rectangular side groove is further cut on the inner side wall of the cut rectangular cutting groove;
s4, continuing the working procedure that the main cutter cuts the rectangular cutting groove in the front and the auxiliary cutter further cuts the rectangular side grooves on the two side walls of the rectangular cutting groove, cutting forward along the trend of the pavement crack to realize the cutting groove processing of the inverted T-shaped section of the pavement crack, and blowing and cleaning the cutting groove after the cutting is finished to remove dregs and cuttings;
s5, injecting crack pouring glue into the cutting groove by using a sprinkling irrigation device; when crack pouring is carried out, a gun head of a spray gun of the spray irrigation device extends into the groove bottom of the cutting groove, moves along the trend of the cutting groove in a snake-shaped path, and moves up and down in a cutting groove depth mode in a clearance mode along with the progress of the pouring so as to fill crack pouring glue into each cut rectangular groove as much as possible.
Compared with the prior art, the invention has the following beneficial effects: the invention changes the traditional preposed construction method for cutting the rectangular cutting groove along the crack, changes the cutting rectangular groove into the special inverted T-shaped cutting groove, the cutting groove with the inverted T-shaped section can be used for fully injecting the crack pouring glue during crack pouring, is better embedded in the cutting groove, prevents the crack pouring glue at the bottom in the crack from falling off when the poured crack pouring glue is extruded towards the crack opening due to external force, avoids the internal hollow of the crack, improves the crack pouring effect, has good durability, and particularly has enough tensile resistance to the pulling force generated in the rolling of the wheel. The invention also introduces a concrete construction method for realizing the T-shaped grooving, and the T-shaped grooving can be ensured to be cut and formed quickly by constructing according to the method or designing the grooving mechanism of the concrete cutting equipment based on the method.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a specific construction structure of the method of the present invention;
FIG. 2 is a schematic view of the serpentine path of travel of the lance;
FIG. 3 is a front view of one of the slot-cutting mechanisms of the construction of FIG. 1;
FIG. 4 is a front view of an exemplary enlarged slot assembly for use with the process of the present invention;
FIG. 5 is an enlarged view of the structure of FIG. 3 at the location of the T-block;
FIG. 6 is a front view of a slot expander assembly of another cutting apparatus in the method of the present invention;
FIGS. 7-9 are schematic views of three configurations of the driving gear and the driven gear of a cutting mechanism according to the present invention;
FIG. 10 is an end view of a drive gear according to the method of the present invention;
FIG. 11 is a cross-sectional view A-A of the structure shown in FIG. 10;
FIG. 12 is a cross-sectional view taken along line B-B of FIG. 7;
FIG. 13 is a cross-sectional view taken at C-C of FIG. 12;
fig. 14 is a schematic view of a connection structure of the hydraulic rod and the cylindrical gear.
The reference numerals are explained below: the cutting device comprises a main cutter 1, an auxiliary cutter 2, a frame 3, a main shaft 4, a mudguard 5, a cut rectangular groove 6, a hydraulic rod 7, a cylindrical gear 8, a vertical sliding rotating shaft 9, a driving gear 10, a positioning shaft shoulder 11, a cylindrical spring 12, a gasket 13, a T-shaped block 14, a limiting piece 16, a positioning piece 17, a ball 18, an avoidance cavity 19, an outer concave cavity 20, a horizontal sliding rotating shaft 21, an inner concave cavity 22, a gear tooth gap 23, a driving strip 24, gear teeth 25, a sliding rod 26, a roller 27, a compression spring 28, a sliding column 29, an input gear 30, a snake-shaped path 31 and a rectangular side groove 32.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the functions of the invention clearer and easier to understand, the technical scheme of the invention is described in detail below. It should be understood by those skilled in the art that the following examples are illustrative of some, but not all, specific embodiments of the invention and therefore the scope of the invention is not limited thereto.
Referring to fig. 1-6, in the embodiment, a highway subgrade maintenance pavement crack pouring method is disclosed, and S1, manual cutting is performed in advance at the initial end of a pavement crack to obtain a rectangular cutting groove with a given width, wherein the width of the rectangular cutting groove is 1.25-2 times of the average value of the actual width of the crack, and the length of the rectangular cutting groove is required to enable a groove cutting mechanism of crack pouring equipment to be normally arranged so as to continue cutting; the grooving mechanism comprises a main cutter 1 and an auxiliary cutter 2 which are arranged in front and back, wherein the main cutter 1 continues to cut the rectangular grooving, and the auxiliary cutter 2 cuts a rectangular side groove on the inner side wall of the rectangular grooving.
And S2, the primary cutter 1 of the grooving mechanism is arranged in the previously-cut grooving, and the vertical distance from the highest point of the cutting track of the secondary cutter 2 in the grooving to the notch of the rectangular grooving is not less than half of the depth of the rectangular grooving.
S3, the starting hydraulic rod 7 pushes a vertical sliding rotating shaft 9 provided with a cylindrical gear 8 downwards, when the vertical sliding rotating shaft 9 drives the driving gear 10 to move downwards, the driving gear 10 pushes a pair of two driven gears with a reset function, which are symmetrically arranged on the left and right sides of the driving gear, open, so that the two driven gears are pushed towards one side away from the two driven gears, the auxiliary cutter 2 coaxially and fixedly connected with the driven gears extends outwards, and one rectangular side groove is further cut on the inner side wall of the cut rectangular groove. The reset function of the driven gears means that the two driven gears are close to each other and return to their original positions when the driving gear 10 moves up to the initial position.
And S4, continuing the process that the main cutter 1 cuts the rectangular cutting groove in the front direction and the auxiliary cutter 2 further cuts the two side walls of the rectangular cutting groove to form rectangular side grooves, cutting forwards along the trend of the pavement crack to realize the cutting groove processing of the inverted T-shaped section of the pavement crack, and blowing and cleaning the cutting groove after the cutting is finished to remove dregs and chips.
S5, injecting crack pouring glue into the cutting groove by using a sprinkling irrigation device; during crack pouring, the gun head of a spray gun of the spray irrigation device extends into the groove bottom of the cutting groove, moves along the trend of the cutting groove in a snake-shaped path 31, and moves up and down in a gap mode in the depth of the cutting groove along with the progress of the pouring so as to fill crack pouring glue into each cut rectangular groove as much as possible.
As a specific construction detail, as shown in fig. 3 and 5, the driven gear in step S3 defines its initial installation position by the cylindrical spring 12 to achieve automatic return of the driven gears to the initial position by the driven gears approaching each other after the driving gear 10 is moved upward to return.
Preferably, if the tip of the spray gun can be inserted into the rectangular side groove, the inflection point of the serpentine path 31 is located in the rectangular side groove 32 cut by the secondary cutting knife 2, so as to fully realize the pouring and filling of the crack pouring glue at the bottom of the inverted T-shaped cutting groove.
In a preferred embodiment, in step S3, the method for ejecting the pair of driven gears symmetrically disposed on the left and right sides of the driving gear 10 includes: the driving gear 10 and the two driven gears are always kept in a non-standard meshing state, so that one or more gear teeth 25 of the driven gears are always in the gaps 23 of the gear teeth 25 of the driving gear 10, the gear teeth 25 of the driven gears are not in contact with the side walls of the gaps 23 of the gear teeth 25, standard gear transmission contact is not formed, and only a positioning effect is achieved, so that the gear teeth 25 are always kept in a corresponding meshing relationship or a socket-and-spigot relationship with the gaps 23 of the corresponding gear teeth 25; as the vertical sliding shaft 9 is further moved downward, the above-mentioned driving bar 24 is kept in contact with the tooth tips of the teeth 25, thereby pushing the two driven gears toward the side where they are away from each other. The auxiliary cutter 2 which is coaxially and fixedly connected with the driven gear extends outwards so as to further cut the inner side wall of the cut rectangular groove into a rectangular side groove. In step S3, a specific method of ejecting the pair of driven gears symmetrically disposed on both left and right sides of the drive gear 10 may be as follows: the driving gear 10 is in contact engagement with the two driven gears, and the gear teeth 25 of the driving gear 10 and the driven gears are both in triangular prism structures, so that the driving gear 10 can be adaptively engaged with the two driven gears at the same time no matter how the driving gear rotates around the axis of the driving gear 10 and then moves downwards, the two driven gears are ejected, the auxiliary cutter 2 coaxially and fixedly connected with the driven gears extends outwards, and one rectangular side groove is further cut on the inner side wall of the cut rectangular groove.
When the driven gear with the triangular prism-shaped structure gear teeth 25 is used, the spherical limiting part 16 is installed at the bottom end of the driving gear 10, the small-end rounding of the driven gear is processed, the driving gear 10 moves downwards from the position right above the position between the two driven gears, and the spherical surface of the limiting part 16 is guaranteed to be in smooth contact with the rounding of the two driven gears at the same time, so that the two driven gears are pushed at the same time to be back to each other, and the auxiliary cutter 2 connected with the two driven gears respectively stretches out.
Finally, in the embodiment section of the present invention, in order to more fully and pictorially describe the construction method of the present invention, the applicant herein gives a concrete crack-pouring equipment structure and its complete construction process based on the above-mentioned series of method principles of the present invention, so as to embody the core ideas of the present invention. It mainly includes grooving mechanism and sprinkling irrigation equipment, grooving mechanism cuts road surface crack grooving, sprinkling irrigation equipment is used for injecting the crack pouring glue towards the inslot, and this sprinkling irrigation equipment market is direct can be enough, and aforementioned grooving mechanism then includes that the interval sets up and the main cutting component and the vice cutting component of relative fixed each other behind the tandem, specifically:
the main cutting means in this embodiment comprises a main cutter 1 rotatably mounted on a frame 3, the main cutter 1 being used to cut a pavement crack into a groove. Meanwhile, the structure of the secondary cutting member of the present embodiment is as follows: the hydraulic mechanism comprises a hydraulic rod 7, a cylindrical gear 8, a vertical sliding shaft 9, a bevel gear-shaped driving gear 10 and slot expanding assemblies which are symmetrically arranged from top to bottom in a machine frame 3. The top end of the cylindrical gear 8 can be sleeved on the output end of the hydraulic rod 7 in a self-rotating manner around the axis of the cylindrical gear 8, the bottom end of the cylindrical gear 8 is coaxially and fixedly connected with the top end of the vertical sliding rotating shaft 9, the cylindrical gear 8 is processed to be longer or thicker so as to be meshed with the input gear 30, the meshed range is enlarged, the input gear 30 is connected with a motor and other devices, and other driving modes such as pneumatic driving can be adopted, which can be selected adaptively by a person skilled in the art, and further description is omitted here. The vertical sliding rotating shaft 9 can be installed in the rack 3 in a self-rotating mode around the axis of the vertical sliding rotating shaft and can vertically slide, and the driving gear 10 is coaxially and fixedly connected to the bottom end of the vertical sliding rotating shaft 9.
Specifically, as shown in fig. 3, the slot expanding assembly includes a horizontal smooth rotating shaft 21, a cylindrical spring 12, a washer 13, a counter cutter 2 and a bevel gear-shaped driven gear, wherein the washer 13 is a smooth annular gasket made of an abrasion-resistant material. The secondary cutter 2 is a cylindrical structure with a chamfered end, one end of the secondary cutter is a cutting end, the other end of the secondary cutter is a connecting end, an axial cutting edge used for cutting during axial feeding is arranged on the end face of the cutting end, a radial cutting edge used for cutting during autorotation is arranged on the cylindrical surface of the secondary cutter, and the lowest point of the cutting track of the radial cutting edge is not higher than the lowest point of the cutting track of the primary cutter 1. Meanwhile, the horizontal rotating shafts 21 in this embodiment can be installed on the frame 3 in a rotation manner around the axes thereof and can horizontally slide, the ends of the two horizontal rotating shafts 21 opposite to each other are fixedly connected with the connecting end of one of the secondary cutters 2, the ends of the horizontal rotating shafts 21 opposite to each other are fixedly connected with one of the driven gears, and the end close to the driven gear is provided with the positioning shaft shoulder 11. An outer concave cavity 20 is arranged on the outer surface of the frame 3 for mounting the horizontal rotating shaft 21, one end of the cylindrical spring 12 is fixedly connected to the cavity bottom of the outer concave cavity 20, the other end of the cylindrical spring 12 is connected with one end face of the gasket 13, referring to fig. 4, the gasket 13 is sleeved on the horizontal rotating shaft 21 in a sliding fit manner, a T-shaped block 14 is convexly arranged on the end face of the other end of the gasket 13, the T-shaped block is positioned in an annular sliding groove on the end face of the auxiliary cutter 2 opposite to the gasket and is smoothly attached to the end face of the positioning shaft shoulder 11, the length of the cylindrical spring 12 can enable the auxiliary cutter 2 to be limited in the outer concave cavity 20 through the T-shaped block 14 on the gasket 13 of the positioning shaft shoulder 11 in a natural state, and the distance between the cutting end faces of the two auxiliary cutters 2 is smaller than the cutting groove width of the main cutter 1.
Referring to fig. 6, for the engagement transmission of the driving gear 10 and the driven gear, one specific structure is as follows: the driving gear 10 is located right above the two driven gears and the driving gear 10 can be engaged with the two driven gears when moving vertically downwards, the depth of the gaps 23 of the teeth 25 of the driving gear 10 is greater than the height of the teeth 25 of the driven gear, the depth of the gap 23 between the teeth 25 is such that the driving gear 10 and the driven gear are always maintained in a non-standard engagement state when moving up and down, a bucktooth-shaped driving strip 24 which is warped upwards is fixed at the bottom of the gap 23 of the gear teeth 25 of the driving gear 10, when the bottom arc surface of the driving strip 24 is in pressing contact with the surface of the teeth 25 of the driven gear, the auxiliary cutter 2 connected with the corresponding driven gear is pushed to extend out of the outer concave cavity 20, the cross sections of the gear teeth 25 on the driving gear 10 and the driven gear are in an isosceles triangle shape, so that the gear teeth 25 are in a strip-shaped triangular prism structure, which facilitates the driving gear 10 to smoothly realize the meshing transmission with the driven gear from the upper side in a wedging manner.
As another embodiment, as shown in fig. 5, the present slot expanding assembly may further have the following structure: the groove expanding assembly comprises a horizontal smooth rotating shaft 21, a cylindrical spring 12, a gasket 13, an auxiliary cutter 2 and a bevel gear-shaped driven gear, wherein the gasket 13 is a smooth annular gasket made of wear-resistant materials. The secondary cutter 2 is a cylindrical structure with a chamfered end, one end of the secondary cutter is a cutting end, the other end of the secondary cutter is a connecting end, an axial cutting edge for cutting during axial feeding is arranged on the end face of the cutting end, a radial cutting edge for cutting during autorotation is arranged on the cylindrical surface of the secondary cutter, and the lowest point of the cutting track of the radial cutting edge is not higher than the lowest point of the cutting track of the primary cutter 1. The horizontal rotating shafts 21 can be installed on the frame 3 in a rotating mode around the axes of the horizontal rotating shafts and can horizontally slide, one ends, back to each other, of the two horizontal rotating shafts 21 are fixedly connected with the connecting end of one auxiliary cutter 2, and one end, far away from the auxiliary cutter 2, of each horizontal rotating shaft 21 is provided with a positioning shaft shoulder 11. An outer concave cavity 20 is arranged on the outer surface of the machine frame 3 for mounting the horizontal rotating shaft 21, an inner concave cavity 22 is arranged on the inner surface, one end of the cylindrical spring 12 is fixedly connected to the cavity bottom of the inner concave cavity 22, the other end of the cylindrical spring is connected with one end face of the gasket 13, the gasket 13 is sleeved on the horizontal rotating shaft 21 in a sliding fit mode, the end face of the other end of the gasket is smoothly attached to the end face of the positioning shaft shoulder 11, the length of the cylindrical spring 12 enables the auxiliary cutter 2 to be limited in the outer concave cavity 20 through the positioning shaft shoulder 11 in a natural state, and the distance between the end faces of the cutting ends of the two auxiliary cutters 2 is smaller than the cutting groove width of the main cutter 1. Meanwhile, as shown in fig. 8 to 10, for the meshing transmission of the driving gear 10 and the driven gear, another specific structure is as follows: the driving gear 10 is located right above the two driven gears, the driving gear 10 can be meshed with the two driven gears simultaneously when moving vertically downwards, and the cross sections of the gear teeth 25 on the driving gear 10 and the driven gears are isosceles triangle-shaped, so that the gear teeth 25 are of strip-shaped triangular prism structures. When the tool is used, the gear teeth 25 of the driven gear can be wedged into the gaps 23 of the gear teeth 25 of the driving gear 10 in a self-adaptive manner when the driving gear 10 moves downwards due to the triangular prism structure of the gear teeth 25, whether the alignment of the gear teeth 25 and the gaps is accurate is not considered, whether the socket and spigot snap-in structure in one-to-one correspondence can be realized, the tool is very simple and convenient and is easy to manufacture, when the vertical sliding rotating shaft 9 is retracted, the cylindrical spring 12 pushes the horizontal sliding rotating shaft 21 back, and the auxiliary cutter 2 is accommodated. In this structural design, driving gear 10 and driven gear can keep away from each other and contactless each other, and even if the two keep away from each other, also can be when being close to the quick interlock counterpoint of ability, realize the meshing transmission.
As a second embodiment, as shown in fig. 5, the present slot expanding assembly may further have the following structure: the groove expanding assembly comprises a horizontal smooth rotating shaft 21, a cylindrical spring 12, a gasket 13, an auxiliary cutter 2 and a bevel gear-shaped driven gear, wherein the gasket 13 is a smooth annular gasket made of wear-resistant materials. The secondary cutter 2 is a cylindrical structure with a chamfered end, one end of the secondary cutter is a cutting end, the other end of the secondary cutter is a connecting end, an axial cutting edge for cutting during axial feeding is arranged on the end face of the cutting end, a radial cutting edge for cutting during autorotation is arranged on the cylindrical surface of the secondary cutter, and the lowest point of the cutting track of the radial cutting edge is not higher than the lowest point of the cutting track of the primary cutter 1. The horizontal rotating shafts 21 can be installed on the frame 3 in a rotating mode around the axes of the horizontal rotating shafts and can horizontally slide, one ends, back to each other, of the two horizontal rotating shafts 21 are fixedly connected with the connecting end of one auxiliary cutter 2, and one end, far away from the auxiliary cutter 2, of each horizontal rotating shaft 21 is provided with a positioning shaft shoulder 11. An outer concave cavity 20 is arranged on the outer surface of the machine frame 3 for mounting the horizontal rotating shaft 21, an inner concave cavity 22 is arranged on the inner surface, one end of the cylindrical spring 12 is fixedly connected to the cavity bottom of the inner concave cavity 22, the other end of the cylindrical spring is connected with one end face of the gasket 13, the gasket 13 is sleeved on the horizontal rotating shaft 21 in a sliding fit mode, the end face of the other end of the gasket is smoothly attached to the end face of the positioning shaft shoulder 11, the length of the cylindrical spring 12 enables the auxiliary cutter 2 to be limited in the outer concave cavity 20 through the positioning shaft shoulder 11 in a natural state, and the distance between the end faces of the cutting ends of the two auxiliary cutters 2 is smaller than the cutting groove width of the main cutter 1. Referring to fig. 7, a third specific structure of the meshing transmission between the driving gear 10 and the driven gear is: the driving gear 10 is located right above the two driven gears, and the driving gear 10 can be engaged with the two driven gears simultaneously when moving vertically downwards, the bottom of the gap 23 between the gear teeth 25 of the driving gear 10 is fixedly connected with a roller 27 installed on a sliding rod 26, and all the sliding rods 26 extend into the driving gear 10 in a sliding fit manner and are in smooth contact with the bottom end surface of a sliding column 29 capable of vertically sliding in the driving gear 10. The top end of the sliding column 29 is connected with a compression spring 28, the roller 27 is in pressing contact with the top surface of the gear 25 of the driven gear during the downward movement of the driving gear 10, and the sliding rod 26 can slide into the driving gear 10 for a length that allows the driving gear 10 and the driven gear to maintain a standard meshing state. This embodiment is different from the first embodiment of the slot-expanding assembly described above in that, in addition to the difference in the elastically telescopic structure of the secondary cutter 2, there is a difference in the principle of engagement between the driving gear 10 and the driven gear, where the sliding rod 26 and the compression spring 28 are equivalent to being connected together, and when the driving gear 10 moves down, the depth of the tooth 25 of the driven gear engaged with the driving gear 10 into the gap 23 of the tooth 25 of the driving gear 10 is gradually changed and gradually increased, and the driving bar 24 is a rigid member which is fixed once in contact with the addendum surface of the corresponding tooth 25, so that, when the structure is designed, the driving bar 24 is preferably in contact with the addendum surface of the corresponding tooth 25, and the standard engagement between the driving gear 10 and the driven gear is preferably achieved.
Besides the structural combination design scheme in the above specific embodiment, the structural forms of the two slot expanding assemblies and the three matching structural forms of the driving gear 10 and the driven gear can also be combined in pairs for use, so that the grooving processing of the inverted T-shaped section is realized, and the purposes of improving the crack pouring effect and the durability are achieved.
Finally, the embodiment provides a road surface crack pouring process by adopting the method for maintaining the road surface of the highway subgrade, which mainly comprises the following steps:
firstly, the highway subgrade maintenance pavement crack pouring method is arranged at the initial end of a pavement crack in advance, manual cutting is carried out at the initial end in advance to obtain a rectangular cutting groove with a set width and a rectangular cutting groove, the width of the rectangular cutting groove is preferably 1.25-2 times of the average value of the actual width of the crack, and the length of the rectangular cutting groove is required to enable a groove cutting mechanism of the highway subgrade maintenance pavement crack pouring system to be normally arranged so as to be convenient for continuous cutting.
Secondly, the position of the grooving mechanism of the highway subgrade maintenance pavement crack pouring method is adjusted according to the field condition, and a main cutter 1 of the grooving mechanism is arranged in a rectangular groove which is cut in advance. And preferably, the vertical distance from the highest point of the cutting track of the secondary cutter 2 in the rectangular cutting groove to the notch of the rectangular cutting groove is not less than half of the depth of the cutting groove.
Then the hydraulic rod 7 is started to push the vertical sliding rotating shaft 9 provided with the cylindrical gear 8 downwards, and the cylindrical gear 8 is longer, and the input gear 30 connected with the external driving force equipment is thinner, so that the cylindrical gear 8 can be always meshed with the input gear 30 when the vertical sliding rotating shaft 9 slides downwards, and the complete transmission relation is kept. When the vertical sliding shaft 9 drives the driving gear 10 to move downwards, because the depth of the gap 23 between the teeth 25 of the driving gear 10 is very deep relative to the driven gear, the driving gear 10 and the driven gear are always kept in a non-standard meshing state, that is, a certain or a plurality of teeth 25 of the driven gear are always in the gap 23 between the teeth 25 of the driving gear 10, only the teeth 25 are not in contact with the side wall of the gap 23 between the teeth 25, that is, no standard gear transmission contact is formed, and only a positioning effect is achieved, so that the teeth 25 are always kept in a corresponding meshing relationship or a socket relationship with the corresponding gaps 23 between the teeth 25. As the vertical sliding shaft 9 is further moved downward, the driving bar 24 is kept in contact with the tooth tops of the gear teeth 25, thereby pushing the two driven gears toward the side where they are away from each other, thereby achieving the outward extension of the sub-cutter 2 to further cut a small rectangular side groove into the inner side wall of the cut rectangular groove. Meanwhile, in fact, the driving gear 10 and the driven gear form a fixed transmission relationship even the standard transmission of the gears is realized, it should be noted that in the embodiment, the gears are only transmission tools and do not relate to precise transmission ratio, so that only the transmission relationship is formed, but the standard transmission is optimal. When the vertical sliding shaft 9 is retracted, the horizontal sliding shaft 21 is retracted by the cylindrical spring 12, and the sub-cutter 2 is stored. In this step, for the slot-expanding structure formed by the first embodiment and the second embodiment, the corresponding steps may be performed as described in the corresponding embodiments.
And then, continuing the process that the main cutter 1 cuts a large rectangular groove in the front and the auxiliary cutter 2 further cuts the two side walls of the large rectangular groove, and under the assistance of the universal wheels, cutting the whole highway subgrade maintenance pavement crack pouring method forwards along the trend of the crack, so that the cutting processing of the inverted T-shaped section of the pavement crack is realized at one stroke, and after the cutting is finished, blowing and cleaning the groove to remove dregs and cuttings.
And finally, injecting crack pouring glue into the groove by using the sprinkling irrigation device of the highway subgrade maintenance pavement crack pouring method. Preferably, during crack pouring, the lance head of the spray lance of the spray irrigation device preferably extends into the groove bottom of the rectangular cutting groove and moves along the trend of the rectangular cutting groove in a snake-shaped path, and if the lance head is small enough or the small rectangular groove (rectangular side groove) on the side wall of the rectangular cutting groove is large enough, the corner of the snake-shaped path preferably extends into the small rectangular groove cut by the auxiliary cutter 2. In addition, as the pouring progresses, the rectangular cutting grooves are moved up and down intermittently in the depth mode so as to fill the inside of each cut cutting groove with the pouring glue as much as possible.
According to the detailed and specific structure and working principle of the crack pouring equipment, the method for pouring the cracks on the road bed maintenance pavement provided by the invention, the crack pouring glue can be injected into the cutting groove with the inverted T-shaped section, after the rectangular cutting groove is cut in advance at the initial end of the crack by using the method of the invention, the one-time continuous cutting and forming of the inverted T-shaped section cutting groove can be rapidly carried out, after the pouring of the crack pouring glue is carried out according to the method that the snake-shaped path of the spray gun head is matched with the sprinkling irrigation mode of intermittent movement up and down, the good filling of the crack pouring glue in the cutting groove can be ensured, thereby effectively preventing the inside of the cutting groove, especially the bottom part, from being empty after the crack pouring glue expands and is extruded outwards, when the wheel rolls in summer, increased and pulled the resistance of pouring sealant in the notch to the wheel adhesion, promoted the filling repair effect of pouring, promoted the durability of pouring rear pavement crack department greatly.
It should be noted that, in the present invention, 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Therefore, it should be understood by those skilled in the art that any modification and equivalent replacement of the embodiments disclosed herein without departing from the technical spirit of the present invention shall be included in the scope of the present invention.
Claims (6)
1. A method for filling cracks on a road bed maintenance pavement is characterized by comprising the following steps: the method comprises the following steps:
s1, manually cutting at the initial end of the pavement crack in advance to obtain a rectangular cutting groove with a given width, wherein the width of the rectangular cutting groove is 1.25-2 times of the average value of the actual width of the crack, and the length of the rectangular cutting groove is required to enable a cutting mechanism of crack pouring equipment to be normally arranged so as to continue cutting; the grooving mechanism comprises a main cutter and an auxiliary cutter which are arranged in front and back, wherein the main cutter continues to cut the rectangular grooving, and the auxiliary cutter cuts a rectangular side groove on the inner side wall of the rectangular grooving;
s2, arranging the main cutter of the grooving mechanism in the groove pre-cut in the front, wherein the vertical distance between the highest point of the cutting track of the auxiliary cutter in the groove and the notch of the rectangular groove is not less than half of the depth of the rectangular groove;
s3, a hydraulic pressure starting rod pushes a vertical sliding rotating shaft provided with a cylindrical gear downwards, when the vertical sliding rotating shaft drives a driving gear to move downwards, the driving gear pushes a pair of two driven gears with reset functions, which are symmetrically arranged on the left side and the right side of the driving gear, open, so that the two driven gears are pushed towards the side far away from each other, and an auxiliary cutter coaxially and fixedly connected with the driven gears extends outwards, so that the rectangular side groove is further cut on the inner side wall of the cut rectangular cutting groove;
s4, continuing the working procedure that the main cutter cuts the rectangular cutting groove in the front and the auxiliary cutter further cuts the rectangular side grooves on the two side walls of the rectangular cutting groove, cutting forward along the trend of the pavement crack to realize the cutting groove processing of the inverted T-shaped section of the pavement crack, and blowing and cleaning the cutting groove after the cutting is finished to remove dregs and cuttings;
s5, injecting crack pouring glue into the cutting groove by using a sprinkling irrigation device; when crack pouring is carried out, a gun head of a spray gun of the spray irrigation device extends into the groove bottom of the cutting groove, moves along the trend of the cutting groove in a snake-shaped path, and moves up and down in a cutting groove depth mode in a clearance mode along with the progress of the pouring so as to fill crack pouring glue into each cut rectangular groove as much as possible.
2. The highway subgrade maintenance pavement crack pouring method according to claim 1, which is characterized in that: the driven gears in the step S3 are limited in their initial installation positions by the cylindrical springs, so that the driven gears are automatically reset after the driving gear moves upwards and returns to the initial positions.
3. The highway subgrade maintenance pavement crack pouring method according to claim 1, which is characterized in that: if the gun head of the spray gun can be inserted into the rectangular side groove, the inflection point of the snake-shaped path is positioned in the rectangular side groove cut by the auxiliary cutter.
4. The highway subgrade maintenance pavement crack pouring method according to claim 1, which is characterized in that: in step S3, the method for ejecting the pair of driven gears symmetrically disposed on the left and right sides by the driving gear includes: the driving gear and the two driven gears are always kept in a non-standard meshing state, so that one or more gear teeth of the driven gears are always in the gear tooth gaps of the driving gear, the gear teeth of the driven gears are not in contact with the side walls of the gear tooth gaps, standard gear transmission contact is not formed, and only a positioning effect is achieved, so that the gear teeth are always kept in a corresponding meshing relationship or a socket-and-spigot relationship with the corresponding gear tooth gaps; with the further downward movement of the vertical sliding shaft, the driving bar is kept in contact with the tooth tips of the teeth, thereby pushing the two driven gears toward the side where the two are away from each other.
5. The highway subgrade maintenance pavement crack pouring method according to claim 1, which is characterized in that: in step S3, a specific method of ejecting the pair of driven gears symmetrically disposed on the left and right sides by the driving gear is as follows: the driving gear is in contact engagement with the two driven gears, and the gear teeth of the driving gear and the driven gears are both in triangular prism structures, so that the driving gear can be adaptively engaged with the two driven gears at the same time no matter how the driving gear rotates around the axis of the driving gear and then moves downwards, and the two driven gears are ejected.
6. The highway subgrade maintenance pavement crack pouring method according to claim 5, which is characterized in that: the bottom end of the driving gear is provided with a spherical limiting part, the small end of each driven gear is subjected to chamfering treatment, the driving gear moves downwards from the position right above the position between the two driven gears, the spherical surface of the limiting part is ensured to be in smooth contact with the fillets of the two driven gears at the same time, the two driven gears are pushed at the same time to be back to back, and the extension of the auxiliary cutters connected with the two driven gears respectively is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011397809.4A CN112523047A (en) | 2020-12-04 | 2020-12-04 | Highway subgrade maintenance pavement crack pouring method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011397809.4A CN112523047A (en) | 2020-12-04 | 2020-12-04 | Highway subgrade maintenance pavement crack pouring method |
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| CN112523047A true CN112523047A (en) | 2021-03-19 |
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| CN202011397809.4A Withdrawn CN112523047A (en) | 2020-12-04 | 2020-12-04 | Highway subgrade maintenance pavement crack pouring method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117513121A (en) * | 2024-01-04 | 2024-02-06 | 河南鼎诚公路养护设备有限公司 | Road gap repairing equipment and using method thereof |
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| US5184597A (en) * | 1990-04-27 | 1993-02-09 | Edward Chiuminatta | Apparatus and method for cutting unhardened concrete |
| CN101275383A (en) * | 2007-03-30 | 2008-10-01 | 上海宝冶建设有限公司 | Device for cutting and chamfering pavement expansion joint and method of use thereof |
| CN203625755U (en) * | 2013-10-17 | 2014-06-04 | 上海汇城建筑装饰有限公司 | Chamfering machine for deformation joint of cement road |
| CN211922236U (en) * | 2020-04-16 | 2020-11-13 | 叶春军 | Highway subgrade maintenance road surface cementation of fissures device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5184597A (en) * | 1990-04-27 | 1993-02-09 | Edward Chiuminatta | Apparatus and method for cutting unhardened concrete |
| CN101275383A (en) * | 2007-03-30 | 2008-10-01 | 上海宝冶建设有限公司 | Device for cutting and chamfering pavement expansion joint and method of use thereof |
| CN203625755U (en) * | 2013-10-17 | 2014-06-04 | 上海汇城建筑装饰有限公司 | Chamfering machine for deformation joint of cement road |
| CN211922236U (en) * | 2020-04-16 | 2020-11-13 | 叶春军 | Highway subgrade maintenance road surface cementation of fissures device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117513121A (en) * | 2024-01-04 | 2024-02-06 | 河南鼎诚公路养护设备有限公司 | Road gap repairing equipment and using method thereof |
| CN117513121B (en) * | 2024-01-04 | 2024-03-22 | 河南鼎诚公路养护设备有限公司 | Road gap repairing equipment and using method thereof |
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