CN112458860A

CN112458860A - Efficient highway subgrade maintenance road surface cementation of fissures device

Info

Publication number: CN112458860A
Application number: CN202011403197.5A
Authority: CN
Inventors: 刘慧娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-03-09

Abstract

The invention discloses a high-efficiency road subgrade maintenance pavement crack sealing device.A secondary cutting part of the device sequentially comprises a hydraulic rod, a cylindrical gear, a vertical sliding rotating shaft, a bevel gear-shaped driving gear and slot expanding assemblies which are symmetrically arranged from top to bottom in a rack; expand groove subassembly includes the driven gear that water smooth rotating shaft, cylindrical spring, packing ring, counter-knife and bevel gear were described, and the bottom rigid coupling in the teeth of a cogwheel clearance of driving gear has the gyro wheel of installing on the slide bar, all slide bars all slide bar stretch into in the driving gear and with the smooth contact of bottom face of the vertical gliding slip post of driving gear internal energy, the top and the compression spring of slip post are connected the driving gear moves down the in-process, gyro wheel and driven gear's teeth of a cogwheel top surface extrusion contact, and the slide bar length that can slide into in the driving gear must allow driving gear and driven gear to keep standard meshing's state. After the crack pouring of the pavement crack is carried out, the crack pouring effect is good, and the durability is high.

Description

Efficient highway subgrade maintenance road surface cementation of fissures device

Technical Field

The invention relates to the technical field of road engineering maintenance, in particular to an efficient highway subgrade maintenance pavement crack pouring device.

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, cut into the groove of rectangle earlier usually to the crack 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 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 that the high-efficiency road subgrade maintenance road surface crack pouring device is provided aiming at the defects in the prior art, and the problems that the inside of a road surface crack, particularly the inner bottom part is empty, the repairing and maintaining effects are poor and the durability is insufficient 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 an efficient highway subgrade maintenance pavement crack pouring device which comprises a groove cutting mechanism and a sprinkling irrigation device, wherein the groove cutting mechanism cuts a pavement crack into grooves, the sprinkling irrigation device is used for injecting crack pouring glue into the grooves, the groove cutting mechanism comprises a main cutting part and an auxiliary cutting part which are arranged in tandem at intervals and are fixed relatively to each other, and the main cutting part and the auxiliary cutting part are arranged in tandem and are fixed relatively to each other

A main cutting part including a main cutter rotatably mounted on the frame, the main cutter for cutting the pavement crack into grooves;

the auxiliary cutting part sequentially comprises a hydraulic rod, a cylindrical gear, a vertical sliding rotating shaft, a bevel gear-shaped driving gear and slot expanding assemblies which are symmetrically arranged from left to right in the rack from top to bottom; the top end of the cylindrical gear can be sleeved on the output end of the hydraulic rod in a self-rotating manner around the axis of the cylindrical gear, the bottom end of the cylindrical gear is coaxially and fixedly connected with the top end of the vertical sliding rotating shaft, the vertical sliding rotating shaft can be mounted in the rack in a self-rotating manner around the axis of the vertical sliding rotating shaft and can vertically slide, and the driving gear is coaxially and fixedly connected with the bottom end of the vertical sliding rotating shaft;

the groove expanding assembly comprises a horizontal smooth rotating shaft, a cylindrical spring, a gasket, a secondary cutter and a bevel gear-shaped driven gear, wherein the gasket is a smooth annular gasket made of wear-resistant materials; the auxiliary cutter is a cylindrical structure with a chamfered end part, one end of the auxiliary cutter is a cutting end, the other end of the auxiliary cutter is a connecting end, an axial cutting edge for cutting during axial feeding is arranged on the end surface of the cutting end, a radial cutting edge for cutting during autorotation is arranged on the cylindrical surface of the auxiliary 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 main cutter; the horizontal smooth rotating shafts can be arranged on the rack in a self-rotating manner around the axes of the horizontal smooth rotating shafts and can horizontally slide, one ends of the two horizontal sliding rotating shafts, which are back to back, are fixedly connected with the connecting end of one auxiliary cutter respectively, and one ends of the horizontal sliding rotating shafts, which are far away from the auxiliary cutters, are provided with positioning shaft shoulders; an outer concave cavity is arranged on the outer surface of a rack for mounting the horizontal rotating shaft, an inner concave cavity is arranged on the inner surface of the rack, one end of the cylindrical spring is fixedly connected to the cavity bottom of the inner concave cavity, the other end of the cylindrical spring is connected with one end face of the gasket, the gasket is sleeved on the horizontal rotating shaft 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, the length of the cylindrical spring can enable the auxiliary cutters to be limited in the outer concave cavity through the positioning shaft shoulder in a natural state, and the distance between the end faces of the cutting ends of the two auxiliary cutters is smaller than the cutting groove width of the main cutter;

the driving gear is located directly over between two driven gear and the driving gear can mesh with two driven gear simultaneously when vertically moving down, the bottom rigid coupling in the teeth of a cogwheel clearance of driving gear has the gyro wheel of installing on the slide bar, all slide bars all stretch into in the driving gear with sliding fit and with the smooth contact of bottom face of the interior vertical gliding slip post of driving gear, the top and the compression spring of slip post are connected the driving gear descends the in-process, gyro wheel and driven gear's teeth of a cogwheel top surface extrusion contact, and the length that the slide bar can slide into in the driving gear must allow driving gear and driven gear to keep the state of standard meshing.

Compared with the prior art, the invention has the following beneficial effects: the special T-shaped groove cutting mechanism is integrated, the traditional crack cutting operation can be carried out, the cutting groove with the inverted T-shaped section is quickly obtained, so that the crack pouring glue is fully injected during crack pouring, the groove is better embedded in the cutting groove, the phenomenon that the bottom crack pouring glue in the crack falls off when the poured crack pouring glue is extruded towards the crack opening due to external force is avoided, the internal void of the crack is avoided, the crack pouring effect is improved, and the durability is good.

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 front view of one embodiment of the present invention;

FIG. 2 is a partial left side view of the slot-cutting mechanism of the structure of FIG. 1;

FIG. 3 is a front view of an enlarged slot assembly;

FIG. 4 is an enlarged view of the structure of FIG. 3 at the location of the T-block;

FIG. 5 is a front view of an alternative construction of the slot expander assembly;

FIGS. 6-8 are schematic views of three specific configurations of the driving gear and the driven gear;

FIG. 9 is an end view of a drive gear;

FIG. 10 is a cross-sectional view A-A of the structure shown in FIG. 9;

FIG. 11 is a cross-sectional view taken along line B-B of FIG. 6;

FIG. 12 is a cross-sectional view taken along line C-C of FIG. 11;

fig. 13 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 avoiding cavity 19, an outer concave cavity 20, a horizontal 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 and an input gear 30.

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 to 3, the present embodiment discloses a groove cutting mechanism for cutting a crack of a road surface into a groove, and a sprinkling irrigation apparatus for injecting a crack sealant into the groove, and particularly, the groove cutting mechanism includes a main cutting member and an auxiliary cutting member which are disposed in tandem at an interval and fixed relative to each other, and more particularly:

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. 5, the present slot expanding assembly may also 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.

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. 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 washer made of wear-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.

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 adopts the road bed maintenance road surface crack pouring system, and specifically provides a road surface crack pouring process, which mainly comprises the following steps:

firstly, the highway subgrade maintenance pavement crack pouring system 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 cutting groove with a preset width, the width of the cutting groove is preferably 1.25-2 times of the average value of the actual width of the crack, and the length of the cutting groove is required to enable the 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 sealing system is adjusted according to the field condition, and a main cutter 1 of the grooving mechanism is arranged in a 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 grooving to the grooving notch is not less than half of the grooving depth.

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. With the vertical sliding shaft 9 further moving downwards, the driving bar 24 keeps contact with the tooth tops of the gear teeth 25, so that the two driven gears are pushed towards the side where the two driven gears are far away from each other, and the auxiliary cutter 2 extends outwards, so that a small rectangular side groove is further cut 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 slots the two side walls of the large rectangular groove, and under the assistance of the universal wheels, the whole highway subgrade maintenance pavement crack pouring system forwards cuts and advances along the trend of cracks, 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, the groove is cleaned by blowing, and dregs and cuttings are removed.

And finally, injecting crack pouring glue into the groove by using the sprinkling irrigation device of the highway subgrade maintenance pavement crack pouring system. Preferably, when pouring cracks, the gun head of the spray gun of the spray irrigation device preferably extends into the groove bottom of the cutting groove and moves along the trend of the cutting groove in a snake-shaped path, and if the gun head is small enough or the small rectangular groove on the side wall of the cutting groove is large enough, the bent point of the snake-shaped path preferably extends into the small rectangular groove cut by the auxiliary cutter 2. In addition, along with the pouring, the rectangular groove is moved up and down in a clearance mode in the depth mode of the groove so as to fill the inside of the cut rectangular groove with pouring glue as much as possible.

Therefore, the highway subgrade maintenance pavement crack pouring system provided by the invention can obtain the special crack cutting groove for injecting the crack pouring glue, and the special inverted T-shaped crack cutting groove can well prevent the inside of the cutting groove, especially the bottom from being hollow after the crack pouring glue expands and extrudes outwards, so that the resistance to the crack pouring glue in the groove opening pulled by the adhesion of the wheel is increased when the wheel is rolled in summer, the crack pouring effect is improved, and the durability after crack pouring is effectively ensured.

Furthermore, the universal caster is fixedly connected to the bottom of the frame 3 through a hydraulic column, and the main cutting part and the auxiliary cutting part are mounted on the surface of one side of the frame 3 in a connected mode so as to achieve cutting depth adjustment. The cylindrical spring 12 is coaxially sleeved on the horizontal smooth rotating shaft 21, so that the telescopic sliding is facilitated.

Furthermore, a limiting part 16 protruding downwards is arranged on the bottom end face of the driving gear 10, a positioning part 17 protruding upwards is arranged at the inner bottom of the rack 3, and when the limiting part 16 contacts with the positioning part 17, the driving gear 10 is meshed with the two driven gears in place. Specifically, the limiting member 16 is a rod-shaped structure that is vertically arranged downward, the positioning member 17 is a rod member that is vertically arranged, the bottom end of the rod member is inserted into the seat tube at the bottom in the rack 3 and is connected with a pressure-bearing spring inside the seat tube, and the pressure-bearing spring supports the rod member and prevents the rod member from sliding out of the seat tube all the time. Meanwhile, the top free end of the rod piece is of a hemispherical structure capable of contacting with the bottom end of the limiting piece 16, so that point supporting and positioning are facilitated.

Further, the sliding column 29 is coaxially disposed in the cylindrical cavity of the driving gear 10, the compression spring 28 is a conical spring, the small end of the conical spring is suspended and fixed on the top of the cylindrical cavity, and the large end of the conical spring is connected with the top end face of the sliding column 29.

In specific implementation details, the angle between the sliding rods 26 and the axis of the driving gear 10 is 45 degrees, and all the sliding rods 26 are arranged on the driving gear 10 in an annular array so as to push the driven gear. And the end of the sliding rod 26 in contact with the end face of the sliding column 29 is spherical so that the point contact causes less interference.

Finally, in the above embodiment of the present invention, it should be particularly noted that, at the beginning of the downward sliding of the driving gear 10 provided with the sliding rod 26 in the above embodiment, one tooth 25 of the driven gear is already located in one gap 23 of the tooth 25 of the driving gear 10, and the depth of the tooth 25 of the driven gear, which is submerged in the gap 23 of the tooth 25 of the driving gear 10, is equal to the diameter of the roller 27, so as to rapidly achieve the one-to-one insertion and meshing of the gap 23 of the tooth 25 and the tooth 25 of the driven gear. This design has a distinct advantage over the drive gear 10 of the previous configuration of the drive bar 24 in that it requires less depth of the gap 23 between the teeth 25 of the drive gear 10, since the slide bar 26 will gradually retract into the drive gear 10 as the drive gear 10 moves downward, whereas the drive bar 24 of the previous configuration cannot change its length, and therefore requires more depth of the gap 23 between the teeth 25 of the corresponding drive gear 10, and is less compact. And because the design does not need to consider the pre-insertion alignment of the gaps 23 of the gear teeth 25 of the driving gear 10 and the driven gear and the gear teeth 25 in advance, the length of the sliding rods 26 must be simultaneously retracted to the same amount when meshing, namely, the length dimension of each sliding rod 26 is kept consistent, otherwise, the sliding rods 26 in the gear teeth 25 of the driven gear which are not meshed with the gaps 23 of the gear teeth 25 of the driving gear 10 when meshing naturally pop up to affect meshing, which is also the reason why all the sliding rods 26 are contacted with the bottom ends of the sliding columns 29 for limitation, and when any one sliding rod 26 is pressed to retract into the driving gear 10, all the rest sliding rods 26 are retracted.

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

1. The utility model provides an efficient highway subgrade maintenance road surface cementation of fissures device, includes grooving mechanism and sprinkling irrigation equipment, grooving mechanism cuts the pavement crack grooving, sprinkling irrigation equipment is used for injecting the cementation of fissures glue, its characterized in that towards the inslot: the grooving mechanism comprises a main cutting part and an auxiliary cutting part which are arranged in tandem at intervals and fixed relatively to each other, wherein

2. The efficient highway subgrade maintenance pavement crack sealing device of claim 1, which is characterized in that: the sliding column is coaxially arranged in a cylindrical inner cavity of the driving gear, the compression spring is a conical spring, the small end of the compression spring is fixedly suspended at the top of the cylindrical inner cavity, and the large end of the compression spring is connected with the top end face of the sliding column.

3. The efficient highway subgrade maintenance pavement crack sealing device of claim 1, which is characterized in that: the included angle between the axes of the slide bars and the driving gear is 45 degrees, and all the slide bars are arranged on the driving gear in an annular array.

4. The efficient highway subgrade maintenance pavement crack sealing device of claim 1, which is characterized in that: and one end of the sliding rod, which is in contact with the end face of the sliding column, is spherical.

5. The efficient highway subgrade maintenance pavement crack sealing device according to any one of claims 1-4, wherein: at the beginning of the downward sliding of the driving gear, one tooth of the driven gear is already positioned in one tooth gap of the driving gear, and the depth of the tooth of the driven gear, which is immersed in the tooth gap of the driving gear, is equal to the diameter of the roller.