CN113684741A - Asphalt coating method - Google Patents

Abstract

The invention discloses an asphalt coating method, which adopts an asphalt distributor for coating, wherein the asphalt distributor comprises a rack, and a walking driving device, a hydraulic pump, an asphalt storage tank and an asphalt distributor which are arranged on the rack, the hydraulic pump is respectively connected with the asphalt storage tank and the asphalt distributor, the asphalt distributor comprises a distribution hopper, a feeding cavity and a discharging cavity are arranged in the distribution hopper, the ratio of the height to the thickness of the feeding cavity is 20-30, the ratio of the thickness of the feeding cavity to the thickness of the discharging cavity is 5-10, and the asphalt coating method comprises the steps of 1, adding asphalt; 2. moving to a construction surface; 3. and starting a material distributor for coating. The invention has the following beneficial effects: asphalt can be uniformly extruded after passing through the distributing hopper, the variable flow cross section is less, the flow resistance is small, the construction is convenient, the construction efficiency is high, the requirement on a pump is not high, the asphalt distributing machine is driven to move by matching with the traveling driving device for coating, the asphalt is uniformly coated, and the construction quality is high.

Description

Asphalt coating method

Technical Field

The invention relates to the technical field of asphalt construction, in particular to an asphalt coating method.

Background

The construction of a waterproof system usually needs to be coated with an asphalt waterproof coating layer, asphalt is a black brown complex mixture composed of hydrocarbons with different molecular weights and nonmetal derivatives thereof, is one of high-viscosity organic liquids, is liquid at high temperature and solid at normal temperature, has a black surface and can be dissolved in carbon disulfide, and is a waterproof, moistureproof and anticorrosive organic gel material; when adopting construction equipment to lay pitch at present, though efficiency has been improved to a certain extent, construction equipment's nozzle spun pitch is inhomogeneous at present, still needs the manual work to scrape even after the pitch is laid, consumes a large amount of manpowers, and is inefficient.

The applicant discloses an asphalt extrusion die head in the prior application CN212925674U, an asphalt flow channel is arranged in the asphalt extrusion die head, the asphalt flow channel comprises a main inlet flow channel formed at the top end of the asphalt extrusion die head, a plurality of branch flow channels formed in the asphalt extrusion die head, and a collecting outlet flow channel formed at the bottom end of the asphalt extrusion die head, each branch flow channel comprises a plurality of branches, the main inlet flow channel is connected with the highest branch flow channel, each branch flow channel is connected with the lower branch flow channel, and the lowest branch flow channel is connected with the collecting outlet flow channel, although the asphalt extrusion die head can split asphalt and improve the uniformity of asphalt to a certain extent, in the test process of the applicant, the uniformity of the asphalt extrusion die head still can not reach the construction standard, the situation of thick middle and thin two sides exists during laying, and because the branch flow channels of the asphalt extrusion die head are many, that is, the flow-changing cross section is large, which causes large resistance of asphalt flow, reduced flow, inconvenient construction and high requirement on the pump.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide an asphalt coating method, which uses an asphalt distributor to perform coating, wherein the asphalt distributor comprises a frame, a travel driving device, a hydraulic pump, an asphalt storage tank and an asphalt distributor, and the asphalt coating method comprises the following steps: adding asphalt; step 2, moving to a construction surface; and 3, starting an asphalt distributor to coat, wherein the asphalt coating method has the advantages of uniform asphalt coating, small asphalt flow resistance, convenience in construction and high construction quality.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

an asphalt coating method adopts an asphalt distributor for coating, the asphalt distributor comprises a frame, a walking driving device, a hydraulic pump, an asphalt storage tank and an asphalt distributor, the walking driving device is arranged at the bottom end of the frame, the asphalt storage tank and the hydraulic pump are arranged on the frame, the outlet of the asphalt storage tank is connected with the inlet of the hydraulic pump, and the outlet of the hydraulic pump is connected with the inlet of the asphalt distributor;

the asphalt distributor comprises a distributing hopper, a feeding cavity and a discharging cavity are arranged in the distributing hopper, a feeding hole of the distributing hopper is formed at the top end of the feeding cavity, an outlet of the hydraulic pump is communicated with the feeding cavity, the bottom end of the feeding cavity is communicated with the top end of the discharging cavity, a discharging hole of the distributing hopper is formed at the bottom end of the discharging cavity, the thickness of the discharging cavity is T1, the height of the discharging cavity is H1, the ratio D1 of H1 to T1 is 20-30, the thickness of the feeding cavity is T2, and the ratio D2 of T2 to T1 is 5-10;

the asphalt coating method comprises the following steps:

step 1: adding asphalt into the asphalt storage tank;

step 2: moving the asphalt distributor to the construction surface;

and step 3: and starting an asphalt spreader to coat asphalt.

Preferably, the size range of H1 is 40-60 mm, the size range of T1 is 1.5-3 mm, and the size range of T2 is 10-20 mm, so that the distribution hopper has relatively small resistance to asphalt flow and can ensure uniform asphalt extrusion.

As preferred, still be equipped with the water conservancy diversion chamber in the cloth fill, the water conservancy diversion chamber sets up the feeding chamber with between the ejection of compact chamber, the top in water conservancy diversion chamber with the bottom in feeding chamber is connected, the bottom in water conservancy diversion chamber with the top in ejection of compact chamber is connected, through setting up like this, the water conservancy diversion chamber is the pitch follow the feeding chamber flows extremely play the water conservancy diversion effect during the ejection of compact chamber, pitch process the water conservancy diversion chamber passes through gradually extremely the ejection of compact intracavity reduces the resistance when pitch flows, otherwise, because the feeding chamber with the sudden change of flow cross-sectional area in ejection of compact chamber leads to pitch flow resistance increase, reduces flow to a certain extent, is not convenient for the construction.

Preferably, the height of the diversion cavity is defined as a ratio D3 of H3 to D2 in numerical value of 1-2, the height of the diversion cavity H3 is adjusted according to the ratio D2, namely the inclination of the diversion surface of the diversion cavity is adjusted, if the ratio D2 is larger, namely the thickness ratio between the feeding cavity and the discharging cavity is larger, the difference between the flow cross-sectional areas of the feeding cavity and the discharging cavity is larger, the value D3 can be selected to be larger, namely the size of H3 is larger, the inclination of the diversion cavity is smaller, the diversion effect can be better achieved, and the flowing resistance of asphalt is effectively smaller; if the comparison of D2 is smaller, namely the thickness ratio between the feeding cavity and the discharging cavity is smaller, the difference between the flow cross-sectional areas of the feeding cavity and the discharging cavity is smaller, the value of D3 can be selected to be smaller, namely the size of H3 is smaller, the inclination of the diversion cavity is larger, so that the asphalt flow resistance can be effectively reduced, and the occupation of too much height space is avoided; if the value of D3 is less than 1, the inclination of the diversion cavity is too large, and the resistance to asphalt flow cannot be effectively reduced; if the value of D3 is greater than 2, the height dimension H3 of the diversion cavity is too large, and takes up too much height space, resulting in a reduction in the height dimensions of the feeding cavity and the discharging cavity or an increase in the overall height dimension of the distribution hopper.

Preferably, the distributing hopper comprises a left half distributing plate and a right half distributing plate connected with the left half distributing plate, the opposite surfaces of the left half distributing plate and the right half distributing plate are provided with cavities, the cavities of the left half distributing plate and the right half distributing plate form the feeding cavity, the flow guide cavity and the discharging cavity, the left half distributing plate is positioned outside the cavity and is provided with a plurality of connecting holes, the left half distributing plate is positioned inside the cavity and is provided with a plurality of reinforcing holes, the right half distributing plate is provided with through holes which are in one-to-one correspondence with the connecting holes and the reinforcing holes, the left half distributing plate is in threaded connection with the right half distributing plate, through the arrangement, the distributing hopper is formed in a split manner, the feeding cavity, the flow guide cavity and the discharging cavity of the distributing hopper can be conveniently processed, and a bolt is adopted to penetrate through the through hole of the right half distributing plate and then is in threaded connection with the corresponding connecting hole or the reinforcing hole and a nut, realize half cloth plate on the left side with half fixed connection of cloth plate on the right side, and the cooperation of strengthening hole and bolt can be strengthened half cloth plate on the left side with half joint strength of cloth plate on the right side, because the cloth fill is extruding pitch's in-process, the flow pressure of pitch is great, strengthen avoiding pressure too big and will behind the cooperation strengthening joint strength of hole and bolt the cloth fill struts, otherwise, if half cloth plate on the left side with half cloth plate on the right side only is connected through connecting hole and bolt cooperation, under applicant's experiment, the flow pressure of pitch will half cloth plate on the left side reaches half cloth plate on the right side struts, and the condition of revealing appears in pitch, influences the coating of pitch even.

Preferably, the asphalt distributor further comprises a switch assembly, an outlet of the hydraulic pump is connected with an inlet of the switch assembly, the switch assembly is connected with the distributing hopper through a branch distributing pipe, the branch distributing pipe comprises a trunk inlet and a plurality of branch outlets, the trunk inlet of the branch distributing pipe is connected with an outlet of the switch assembly, the branch outlets of the branch distributing pipe are connected with a feed inlet of the distributing hopper, and through the arrangement, whether the switch assembly can control asphalt to be conveyed in the distributing hopper or not can be controlled by the switch assembly, and the asphalt flows into the distributing hopper from a plurality of positions through the flow dividing effect of the branch distributing pipe, so that the uniformity of the asphalt is further improved.

Preferably, the hydraulic pump comprises a screw pump, the screw pump comprises a pumping motor, a screw, a helical blade, a feeding pipe and a bearing assembly, the helical blade is sleeved outside the screw, the feeding pipe is sleeved outside the screw and the helical blade, the pumping motor is connected with one end of the feeding pipe, an output shaft of the pumping motor is fixedly connected with one end of the screw, an outlet of the asphalt storage tank is connected with an inlet of the feeding pipe, the bearing assembly is arranged at the other end of the feeding pipe, the other end of the screw penetrates through the bearing assembly, and an outlet of the feeding pipe is connected with an inlet of the asphalt distributor; the flow channel is wide, and can convey asphalt containing particulate impurities.

Preferably, a sealing element is arranged between the feeding pipe and the bearing assembly, and through the arrangement, the sealing element improves the sealing property of the joint of the other end of the feeding pipe and the bearing assembly, asphalt is prevented from corroding the bearing assembly, and the service life is prolonged.

Preferably, the other end of the screw rod is sleeved with a reverse blade, and the asphalt has a certain corrosion effect on the sealing element, so that the sealing element needs to be replaced periodically, the reverse blade is arranged to convey the asphalt reversely, the asphalt is prevented from flowing to the other end of the feeding pipe to corrode the bearing assembly, and the matching of the reverse blade and the sealing element plays a role in double protection of the bearing assembly.

Preferably, the outlet of the asphalt storage box is in flexible connection with the inlet of the feeding pipe, a lifting driving piece is arranged in the asphalt storage box, the output end of the lifting driving piece is connected with the feeding pipe, and through the arrangement, the feeding pipe is driven by the lifting driving piece to move up and down, so that the distance between the asphalt distributor and the construction surface can be controlled.

Compared with the prior art, the invention has the beneficial technical effects that:

by adopting the asphalt distributing machine of the invention, under the action of the hydraulic pump, asphalt is conveyed from the asphalt storage tank to the asphalt distributor, the asphalt enters the distributing hopper, after the asphalt passes through the feeding cavity and the discharging cavity, the flow cross-sectional area change of the feeding cavity and the discharging cavity can improve the flow speed of the asphalt due to the D2 being between 5 and 10, and the D1 being between 20 and 30, even if the particles are clamped between the feeding cavity and the discharging cavity, the asphalt is separated and branched by the particles due to the impurity particles or the carbonization phenomenon, the height dimension H1 of the discharging cavity ensures that the asphalt has enough flow distance to be converged, so that the asphalt is uniformly extruded from the discharging hole, the variable flow cross section is less, the flow speed of the asphalt meets the construction requirement, and the flow resistance of the asphalt is small, the construction is convenient, the construction efficiency is high, and the requirement on the pump is not high; if D1 is less than 20, the height H1 of the discharging cavity is smaller, the thickness T1 is larger, after asphalt is cut off and branched by particles, the asphalt is not easy to converge due to the large space of the discharging cavity, or H1 is smaller, the asphalt does not have enough distance to converge, so that the phenomenon of branching and poor uniformity are caused when the asphalt is extruded from a discharging port, if D1 is more than 30, the height H1 of the discharging cavity is larger, the thickness T1 is smaller, so that better particles are clamped between the feeding cavity and the discharging cavity, and T1 is smaller, so that the flow resistance of the asphalt is further increased; after asphalt is evenly extruded from the discharge port, the traveling driving device is matched to drive the asphalt distributor to move so as to coat asphalt, so that the asphalt is evenly coated, and the construction quality is high.

Drawings

FIG. 1 is a schematic structural diagram of an asphalt spreader in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural view of an asphalt distributor according to example 1 of the present invention;

FIG. 3 is a schematic top view of a distribution hopper according to embodiment 1 of the present invention;

FIG. 4 is a schematic sectional view A-A in FIG. 3 according to example 1 of the present invention;

fig. 5 is a schematic top view of a distribution hopper according to embodiment 2 of the present invention;

FIG. 6 is a schematic sectional view of B-B in FIG. 5 according to embodiment 2 of the present invention;

FIG. 7 is one of the schematic diagrams of a process for testing asphalt paving thickness according to an embodiment of the present invention;

FIG. 8 is a second schematic diagram of a process for testing asphalt paving thickness according to an embodiment of the present invention.

Wherein, the technical characteristics that each reference numeral refers to are as follows:

1. a frame; 2. a travel drive device; 3. a screw pump; 4. an asphalt storage tank; 5. an asphalt distributor; 21. a traveling motor; 22. a speed reducer; 23. a wheel assembly; 24. a transmission member; 31. a pumping motor; 32. a feed pipe; 33. a screw; 34. a helical blade; 35. a counter blade; 36. a bearing assembly; 37. a hose; 38. a lifting drive member; 39. a seal member; 51. a cloth hopper; 52. a switch assembly; 53. a branch distributing pipe; 54. a heating member; 511. a left half cloth plate; 512. a right half cloth plate; 513. a feed cavity; 514. a discharge cavity; 515. a flow guide cavity; 516. a material distribution pipe interface; 517. connecting holes; 518. a reinforcement hole; 519. a threaded bore.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following embodiments.

Referring to fig. 1-4 and 7-8, the embodiment discloses an asphalt coating method, which comprises coating with an asphalt distributor, wherein the asphalt distributor comprises a frame 1, a travel driving device 2, a hydraulic pump, an asphalt storage tank 4 and an asphalt distributor 5, the travel driving device 2 is arranged at the bottom end of the frame 1, the asphalt storage tank 4 and the hydraulic pump are arranged on the frame 1, an outlet of the asphalt storage tank 4 is connected with an inlet of the hydraulic pump, and an outlet of the hydraulic pump is connected with an inlet of the asphalt distributor 5;

the asphalt storage tank 4 is an asphalt storage tank 4 disclosed in CN213590237U of the applicant's prior application, and the details thereof are not repeated herein;

the asphalt distributor 5 comprises a distributing hopper 51, the profile of the distribution is approximately cuboid, the front, back, top and bottom of the distributing hopper 51 are all rectangular, the side of the distributing hopper 51 is inverted trapezoid, a feeding chamber 513 and a discharging chamber 514 are sequentially arranged in the distributing hopper 51 along the flow direction of the asphalt, the feeding chamber 513 and the discharging chamber 514 are both cuboid, the top end of the feeding chamber 513 is communicated with the top end of the distributing hopper 51, namely the top end of the feeding chamber 513 extends to the top end of the distributing hopper 51, the top end of the feeding chamber 513 forms a feeding port of the distributing hopper 51, the outlet of a hydraulic pump is communicated with the feeding chamber 513, the bottom end of the feeding chamber 513 is communicated with the top end of the discharging chamber 514, the bottom end of the discharging chamber 514 is communicated with the bottom end of the distributing hopper 51, namely the bottom end of the discharging chamber 514 extends to the bottom end of the distributing hopper 51, the bottom end of the discharging chamber 514 forms a discharging port of the distributing hopper 51, the feeding chamber 513 is equal to the length of the discharging chamber 514, the thickness dimension of the discharging cavity 514 is T1, the height dimension of the discharging cavity 514 is H1, the ratio D1 of H1 to T1 is 20-30, the thickness dimension of the feeding cavity 513 is T2, and the ratio D2 of T2 to T1 is 5-10.

By adopting the asphalt distributor of the invention, under the action of a hydraulic pump, asphalt is conveyed from an asphalt storage tank 4 to an asphalt distributor 5, the asphalt enters a distributing hopper 51, after the asphalt passes through the action of a feeding cavity 513 and a discharging cavity 514, the flow speed of the asphalt can be improved due to the change of the flow section area of the feeding cavity 513 and the discharging cavity 514 as D2 is between 5 and 10, and D1 is between 20 and 30, because impurity particles exist in the asphalt or asphalt particles are generated due to carbonization, even if the particles are clamped between the feeding cavity 513 and the discharging cavity 514, the asphalt is separated and branched by the particles, the height dimension H1 of the discharging cavity 514 ensures that the asphalt has enough flow distance to be converged, thereby the asphalt is uniformly extruded from a discharging port, the flow section is less, the flow speed of the asphalt meets the construction requirement, meanwhile, the flow resistance of the asphalt is small, the construction is convenient and the construction efficiency is high, and the requirement on the pump is not high; if D1 is less than 20, the height H1 of the discharging cavity 514 is smaller, the thickness dimension T1 is larger, after the asphalt is cut off and branched by the particles, because the space of the discharging cavity 514 is large, the asphalt is not easy to join, or H1 is smaller, the asphalt does not have enough distance to join, so that the asphalt is branched when extruded from the discharging hole, the uniformity is poor, if D1 is greater than 30, the height dimension H1 of the discharging cavity 514 is larger, the thickness dimension T1 is smaller, so that better particles are clamped between the feeding cavity 513 and the discharging cavity 514, and T1 is smaller, so that the flow resistance of the asphalt is further increased; after the asphalt is evenly extruded from the discharge port, the traveling driving device 2 is matched to drive the asphalt distributor to move so as to coat the asphalt, so that the asphalt is evenly coated, and the construction quality is high.

Further, the thickness of the feeding cavity 513 is T2, the ratio D2 of T2 to T1 is between 5 and 10, after the asphalt enters the distribution hopper 51, because D2 is between 5 and 10, the flow velocity of the asphalt can be increased by the change of the flow cross-sectional area of the feeding cavity 513 and the discharging cavity 514, the flow rate of the asphalt is increased to a certain extent, and the construction efficiency is further increased, if D2 is less than 5, the change of the flow cross-sectional area of the feeding cavity 513 and the discharging cavity 514 is not large, the flow velocity of the asphalt cannot be effectively increased, the flow rate is reduced, and if D2 is greater than 10, the change of the flow cross-sectional area of the feeding cavity 513 and the discharging cavity 514 is too large, so that the flow resistance of the asphalt is increased.

The size range of H1 is between 40 mm and 60mm, the size range of T1 is between 1.5 mm and 3mm, and the size range of T2 is between 10 mm and 20mm, and in the range, the resistance of distribution hopper 51 to asphalt flow is relatively small, and asphalt can be extruded uniformly.

The applicant carries out tests after coating different types of distribution hoppers 51, the temperature of asphalt extrusion is set to be 170 ℃, the rotating speed of a pump is 1440r/min, the power of the pump is 4KW, so that the asphalt is coated on a film, the thicknesses of various positions of the asphalt are measured in the transverse direction by a table-type thickness gauge, the transverse direction refers to the width direction of the asphalt, specifically, the transverse thickness test interval is 100mm, the following figures 7-8 are schematic diagrams of the test process, and the test results are shown in the following table 1:

table 1 thickness test statistics table

The analysis shows that, as shown in the tests of serial numbers 1, 2, 5, 6, 7, 8, 11 and 12, when D1 is less than 20, the uniformity of the asphalt extruded from the discharge port is poor, and when D1 is greater than 30, the discharge chamber 514 occupies too much height space although the uniformity of the asphalt extruded is not affected, or T1 is too small, the flow resistance of the asphalt is large, and the flow rate of the asphalt is reduced to a certain extent; as can be seen from the tests of nos. 3, 4, 6, 9, 10, the asphalt flow rate is clearly reduced when D2 is less than 5; when D2 is greater than 10, there is also some reduction in the flow rate of the asphalt.

Preferably, the ratio D2 of T2 to T1 is between 6 and 8, the ratio D1 of H1 to T1 is between 23 and 27, in the embodiment, the ratio D2 of T2 to T1 is 7.5, and the ratio D1 of H1 to T1 is 25.

Preferably, the size range of H1 is 45-55 mm, the size range of T1 is 1.5-2.5 mm, and the size range of T2 is 12-18 mm, in the embodiment, the size of H1 is 50mm, the size of T1 is 2mm, and the size of T2 is 15 mm.

Further, a flow guide cavity 515 is further arranged in the material distribution hopper 51, the flow guide cavity 515 is arranged between the feeding cavity 513 and the discharging cavity 514, the top end of the flow guide cavity 515 is connected with the bottom end of the feeding cavity 513, the thickness of the top end of the flow guide cavity 515 is equal to the thickness T2 of the feeding cavity 513, the bottom end of the flow guide cavity 515 is connected with the top end of the discharging cavity 514, the bottom end of the flow guide cavity 515 is equal to the thickness T1 of the discharging cavity 514, the side wall of the flow guide cavity 515 is obliquely arranged, the flow guide cavity 515 plays a flow guide role when asphalt flows from the feeding cavity 513 to the discharging cavity 514, the asphalt gradually transitions into the discharging cavity 514 through the flow guide cavity 515, and resistance when the asphalt flows is reduced, otherwise, the flow resistance of the asphalt is increased due to abrupt change of the flow cross-sectional areas of the feeding cavity 513 and the discharging cavity 514, and the flow rate is reduced to a certain extent, which is not convenient for construction.

The height of the diversion cavity 515 is defined as the ratio D3 of H3 to D2 in numerical value is 1-2, the height H3 of the diversion cavity 515 is adjusted according to the ratio D2, namely the inclination of the diversion surface of the diversion cavity 515 is adjusted, if the ratio D2 is larger, the thickness ratio between the feeding cavity 513 and the discharging cavity 514 is larger, the difference of the flow cross-sectional areas of the feeding cavity 513 and the discharging cavity 514 is larger, the value D3 is selectable to be larger, namely the size of H3 is larger, the inclination of the diversion cavity 515 is smaller, the diversion function can be better played, and the flowing resistance of asphalt is effectively smaller; if the comparison of D2 is smaller, namely the thickness ratio between the feeding cavity 513 and the discharging cavity 514 is smaller, the difference between the flow cross-sectional areas of the feeding cavity 513 and the discharging cavity 514 is smaller, the value of D3 can be selected smaller, namely the size of H3 is smaller, the inclination of the flow guide cavity 515 is larger, so that the asphalt flow resistance can be effectively reduced, and the occupation of excessive height space is avoided; if the value of D3 is less than 1, the slope of the diversion cavity 515 is too large to effectively reduce the resistance to asphalt flow; if the value of D3 is greater than 2, the height dimension H3 of the diversion chamber 515 is too large, and takes up too much height space, resulting in a decrease in the height dimensions of the feed chamber 513 and the discharge chamber 514 or an increase in the overall height dimension of the distribution hopper 51.

The distributing hopper 51 comprises a left half distributing plate 511 and a right half distributing plate 512 connected with the left half distributing plate 511, the opposite surfaces of the left half distributing plate 511 and the right half distributing plate 512 are provided with cavities, the cavities of the left half distributing plate 511 and the right half distributing plate 512 form a feeding cavity 513, a flow guide cavity 515 and a discharging cavity 514, the cavity of the left half distributing plate 511 is provided with a plurality of connecting holes 517, the cavity of the left half distributing plate 511 is provided with a plurality of reinforcing holes 518, the cavity of the right half distributing plate 512 is provided with through holes corresponding to the connecting holes 517 and the reinforcing holes 518, the left half distributing plate 511 and the right half distributing plate 512 are in threaded connection, the distributing hopper 51 is formed in a split manner, the feeding cavity 513, the flow guide cavity 515 and the discharging cavity 514 of the distributing hopper 51 can be conveniently processed, and the bolts are adopted to pass through the through holes of the right half distributing plate 512 and then are in threaded connection with the corresponding connecting holes 517 or reinforcing holes 518 and nuts, so as to realize the fixed connection of the left half distributing plate 511 and the right half distributing plate 512, and the reinforcing hole 518 can be matched with the bolt to reinforce the connection strength between the left half distributing plate 511 and the right half distributing plate 512, because the flow pressure of the asphalt is higher in the process of extruding the asphalt by the distributing hopper 51, the reinforcing hole 518 is matched with the bolt to reinforce the connection strength and then avoid the excessive pressure from propping open the distributing hopper 51, otherwise, if the left half distributing plate 511 and the right half distributing plate 512 are only matched and connected with the bolt through the connecting hole 517, under the test of the applicant, the flow pressure of the asphalt can prop open the left half distributing plate 511 and the right half distributing plate 512, and the asphalt is leaked, even the coating of the asphalt is affected.

Furthermore, the reinforcing holes 518 are formed in the left half distributing plate 511 located in the diversion cavity 515, and the plurality of reinforcing holes 518 are arranged at intervals along the length direction of the left half distributing plate 511, so that the connection strength of the reinforcing distributing hopper 51 can be ensured, and the influence on the uniformity of the extruded asphalt can be avoided; if the reinforcing hole 518 is formed in the distribution hopper 51 located in the discharging cavity 514, although the portion of the distribution hopper 51 located in the discharging cavity 514 can be well reinforced and connected, due to the existence of the bolt, asphalt is blocked when flowing through the bolt, so that the asphalt is branched, and at this time, the asphalt is closer to the outlet, and a sufficient flowing distance is not provided so that the branched asphalt is converged, so that the phenomenon that the asphalt extruded by the distribution hopper 51 is branched is caused, that is, the uniformity of the extruded asphalt is affected.

The asphalt distributor 5 further comprises a switch component 52, the outlet of the hydraulic pump is connected with the inlet of the switch component 52, the switch component 52 is connected with the distributing hopper 51 through a branch distributing pipe 53, the branch distributing pipe 53 comprises a trunk inlet and a plurality of branch outlets, in the embodiment, the branch distributing pipe 53 comprises two branch outlets, the situation that the branch is too many and the flow resistance of the asphalt is increased is avoided, the trunk inlet of the branch distributing pipe 53 is connected with the outlet of the switch component 52, the branch outlets of the branch distributing pipe 53 are connected with the feed inlet of the distributing hopper 51, whether the asphalt can be conveyed into the distributing hopper 51 or not can be controlled by the switch component 52, and the asphalt flows into the distributing hopper 51 from a plurality of positions through the shunting action of the branch distributing pipe 53, so that the uniformity of the asphalt is further improved.

Furthermore, a trunk inlet of the branch distributing pipe 53 can be connected with an outlet of the switch component 52 in a welding manner or through a flange, a connecting plate is arranged at a branch outlet of the branch distributing pipe 53, the branch distributing pipe 53 is connected with the connecting plate in a welding manner, a plurality of threaded holes 519 are formed in the top end of the distributing hopper 51, through holes corresponding to the threaded holes 519 at the top end of the distributing hopper 51 in a one-to-one manner are formed in the connecting plate, the connecting plate is connected with the distributing hopper 51 in a threaded manner, and therefore the branch outlet of the branch distributing pipe 53 is communicated with the feeding cavity 513.

Be equipped with sealing member 39 between connecting plate and the cloth fill 51, sealing member 39 includes silica gel pad or rubber circle, guarantees the leakproofness between connecting plate and the cloth fill 51, avoids pitch to appear the condition of seepage when getting into in the cloth fill 51 from branch distributing pipe 53.

The switch assembly 52 comprises a power-operated gate valve, the use technology of the power-operated gate valve is mature, and the material cost is low.

Distributing hopper 51 is equipped with heating member 54 outward, because pitch is the organic liquid of high viscosity, and the viscosity and the temperature inverse ratio of pitch, pitch flows to distributing hopper 51 in-process has heat loss, lead to the temperature drop, the viscosity increases, the flow resistance of pitch is great this moment, be not convenient for construct, and pitch is difficult for assembling, the homogeneity of extruding pitch reduces, pitch in fighting 51 is heated to the distributing hopper through heating member 54, improve the temperature of pitch, the viscosity reduces, reduce the flow resistance of pitch, be convenient for construct, pitch can assemble the back and evenly extrude.

The heating member 54 includes an electric heating plate, which is disposed on the outer surfaces of the left half cloth plate 511 and the right half cloth plate 512, through holes corresponding to the connecting holes 517 one by one are formed in the electric heating plate, and the electric heating plate is in threaded connection with the cloth bucket 51.

In this embodiment, the hydraulic pump includes a screw pump 3, the screw pump 3 includes a pumping motor 31, a screw 33, a helical blade 34, a feeding pipe 32 and a bearing assembly 36, the helical blade 34 is sleeved outside the screw 33, the feeding pipe 32 is sleeved outside the screw 33 and the helical blade 34, the pumping motor 31 is connected with one end of the feeding pipe 32, an output shaft of the pumping motor 31 is fixedly connected with one end of the screw 33, an outlet of the asphalt storage tank 4 is connected with an inlet of the feeding pipe 32, the bearing assembly 36 is arranged at the other end of the feeding pipe 32, and the other end of the screw 33 is inserted into the bearing assembly 36, specifically, both ends of the feeding pipe 32 are provided with flanges, the pumping motor 31 and the bearing assembly 36 are respectively in threaded connection with the flanges at both ends of the feeding pipe 32, an outlet of the feeding pipe 32 is connected with an inlet of the asphalt distributor 5, the screw pump 3 has little mechanical wear, and avoids the asphalt from corroding the screw pump 3, the service life is long; the flow channel is wide, and can convey asphalt containing particulate impurities.

Be equipped with sealing member 39 between conveying pipe 32 and the bearing assembly 36, sealing member 39 includes silica gel pad or rubber circle, and sealing member 39 improves the leakproofness of the junction of conveying pipe 32 other end and bearing assembly 36, avoids pitch corruption bearing assembly 36, improves life.

The other end of screw 33 overcoat is equipped with reverse blade 35, reverse blade 35 is opposite with helical blade 34's rotation, and in order to avoid causing the influence to pitch from the export flow direction pitch distributing device 5 of conveying pipe 32, reverse blade 35 cover is located outside the screw 33 that is located the export of conveying pipe 32 to the other end of conveying pipe 32, pitch has certain corrosion to sealing member 39, for this reason, need regularly change sealing member 39, be equipped with reverse blade 35 and can reverse transport pitch, avoid pitch to flow to the other end corrosion bearing subassembly 36 of conveying pipe 32, reverse blade 35 plays the effect of double protection to bearing subassembly 36 with the cooperation of sealing member 39.

The export of pitch storage box 4 and the import flexible coupling of conveying pipe 32, it is concrete, the export of pitch storage box 4 and the import of conveying pipe 32 are connected through folding hose 37, are equipped with lift driving piece 38 in the pitch storage box 4, and the output of lift driving piece 38 is connected with conveying pipe 32, carries out elevating movement through lift driving piece 38 drive conveying pipe 32 to steerable pitch distributing device 5 and the distance between the working face.

The lifting drive member 38 comprises a lifting cylinder, a piston rod of the lifting cylinder faces downwards vertically, and the piston rod of the lifting cylinder is fixedly connected with the feeding pipe 32.

The walking driving device 2 comprises a walking motor 21, a speed reducer 22 and a wheel assembly 23, the wheel assembly 23 is arranged at the bottom end of the frame 1, the speed reducer 22 and the walking motor 21 are arranged above the frame 1, an output shaft of the walking motor 21 is fixedly connected with an input end of the speed reducer 22 in a coaxial mode, an output end of the speed reducer 22 is connected with the wheel assembly 23 through a transmission piece 24, the transmission piece 24 comprises a belt assembly or a chain assembly, the belt assembly or the chain assembly is the prior art, and the description is omitted here.

Example 2:

in this embodiment, referring to fig. 5 to 6, in order to better connect the branch distributing pipe 53 and the distributing hopper 51, distributing pipe joints 516 corresponding to the branch outlets one to one are disposed in the top end of the distributing hopper 51, the distributing pipe joints 516 serve as feed ports of the distributing hopper 51, the distributing pipe joints 516 are cylindrical, one end of the distributing pipe joints 516 extends to the top end of the distributing hopper 51, the other end of the distributing pipe joints 516 is communicated with the top end of the feed cavity 513, the branch outlets of the branch distributing pipes 53 protrude from the connecting plate, when the connecting plate is connected with the distributing hopper 51, the branch outlets are embedded in the distributing pipe joints 516, and the sealing member 39 is disposed between the branch distributing pipes 53 and the distributing hopper 51.

Example 3:

in this embodiment, which is not shown in the figure, the hydraulic pump includes a vane pump, the vane pump is disposed on the frame 1, the outlet of the asphalt storage tank 4 is connected to the inlet of the vane pump, and the outlet of the vane pump is connected to the inlet of the asphalt distributor 5.

Example 4:

in this embodiment, only the technical features different from those of embodiment 1 are described, and the remaining technical features are the same as those of embodiment 1, and in this embodiment, the walking driving device 2 is the walking driving device 2 of the asphalt construction robot disclosed in CN213414008U of the applicant's prior application, and will not be described herein again.

The asphalt coating method comprises the following steps:

step 1: adding asphalt into the asphalt storage tank 4, wherein the specific adding mode refers to that when an asphalt paint bucket disclosed in CN111392176A of the applicant is placed on a paint bucket base, a reverse bottom cover at the bottom end of the asphalt paint bucket is pushed open from outside to inside by a top post, so that the asphalt in the asphalt paint bucket flows into a box body through a discharge hole of the asphalt paint bucket, a discharge hole of the paint bucket base and an inlet in the box body in sequence, and then subsequent construction is carried out without adopting a traditional cover opening pouring mode, thereby avoiding waste gas from being discharged into the atmosphere and improving the efficiency, which is described in the asphalt storage tank 4 of the applicant of the prior application of CN 213590237U;

step 2: moving the asphalt distributing machine to a construction surface, specifically, the walking driving device 2 can be manually moved or started, and the walking driving device 2 works to drive the asphalt distributing machine to move to the construction surface, so that the discharge hole of the distributing hopper 51 is positioned above the construction surface;

and step 3: starting the asphalt distributing machine to coat asphalt, specifically, under the work of a hydraulic pump, asphalt flows into the asphalt distributor 5 from the asphalt storage tank 4, uniformly flows out from the discharge port after passing through the distribution hopper 51, and simultaneously, the walking motor 21 drives the wheel assembly to rotate through the speed reducer 22 so as to drive the asphalt distributing machine to move, or the walking driving device of the asphalt construction robot disclosed in CN213414008U previously applied by the applicant automatically judges the moving path so as to drive the asphalt distributing machine to move so as to coat the asphalt on a construction surface.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (10)

1. The asphalt coating method is characterized in that an asphalt distributor is adopted for coating, the asphalt distributor comprises a rack (1), a walking driving device (2), a hydraulic pump, an asphalt storage tank (4) and an asphalt distributor (5), the walking driving device (2) is arranged at the bottom end of the rack (1), the asphalt storage tank (4) and the hydraulic pump are arranged on the rack (1), the outlet of the asphalt storage tank (4) is connected with the inlet of the hydraulic pump, and the outlet of the hydraulic pump is connected with the inlet of the asphalt distributor (5);

the asphalt distributor (5) comprises a distributing hopper (51), a feeding cavity (513) and a discharging cavity (514) are arranged in the distributing hopper (51), a feeding hole of the distributing hopper (51) is formed at the top end of the feeding cavity (513), an outlet of a hydraulic pump is communicated with the feeding cavity (513), the bottom end of the feeding cavity (513) is communicated with the top end of the discharging cavity (514), a discharging hole of the distributing hopper (51) is formed at the bottom end of the discharging cavity (514), the thickness of the discharging cavity (514) is T1, the height of the discharging cavity (514) is H1, the ratio D1 of H1 to T1 is between 20 and 30, the thickness of the feeding cavity (513) is T2, and the ratio D2 of T2 to T1 is between 5 and 10;

the asphalt coating method comprises the following steps:

step 1: adding asphalt into the asphalt storage tank (4);

step 2: moving the asphalt distributor to the construction surface;

and step 3: and starting an asphalt spreader to coat asphalt.

2. The asphalt coating method according to claim 1, wherein the size range of H1 is between 40 and 60mm, the size range of T1 is between 1.5 and 3mm, and the size range of T2 is between 10 and 20 mm.

3. The asphalt coating method according to claim 1, wherein a flow guide cavity (515) is further arranged in the distributing hopper (51), the flow guide cavity (515) is arranged between the feeding cavity (513) and the discharging cavity (514), the top end of the flow guide cavity (515) is connected with the bottom end of the feeding cavity (513), and the bottom end of the flow guide cavity (515) is connected with the top end of the discharging cavity (514).

4. The asphalt coating method according to claim 3, wherein the height dimension of the diversion cavity (515) is a numerical ratio D3 of H3 to D2 of 1-2.

5. An asphalt coating method according to claim 3, wherein said distributing hopper (51) comprises a left half distributing plate (511) and a right half distributing plate (512) connected to said left half distributing plate (511), concave cavities are arranged on the opposite surfaces of the left half distributing plate (511) and the right half distributing plate (512), the concave cavities of the left half distributing plate (511) and the right half distributing plate (512) form the feeding cavity (513), the flow guide cavity (515) and the discharging cavity (514), the left half distributing plate (511) is provided with a plurality of connecting holes (517) outside the concave cavity, a plurality of reinforcing holes (518) are arranged in the cavity of the left half distributing plate (511), the right half distributing plate (512) is provided with through holes which are in one-to-one correspondence with the connecting holes (517) and the reinforcing holes (518), the left half cloth plate (511) is in threaded connection with the right half cloth plate (512).

6. The asphalt coating method according to any one of claims 1 to 5, wherein said asphalt distributor (5) further comprises a switch assembly (52), the outlet of said hydraulic pump is connected with the inlet of said switch assembly (52), said switch assembly (52) is connected with said distribution hopper (51) through a branch distribution pipe (53), said branch distribution pipe (53) comprises a trunk inlet and a plurality of branch outlets, the trunk inlet of said branch distribution pipe (53) is connected with the outlet of said switch assembly (52), and the branch outlets of said branch distribution pipe (53) are connected with the feed inlet of said distribution hopper (51).

7. The asphalt coating method according to any one of claims 1 to 5, wherein the hydraulic pump comprises a screw pump (3), the screw pump (3) comprises a pumping motor (31), a screw (33), a helical blade (34), a feeding pipe (32) and a bearing assembly (36), the helical blade (34) is sleeved outside the screw (33), the feeding pipe (32) is sleeved outside the screw (33) and the helical blade (34), the pumping motor (31) is connected with one end of the feeding pipe (32), an output shaft of the pumping motor (31) is fixedly connected with one end of the screw (33), an outlet of the asphalt storage tank (4) is connected with an inlet of the feeding pipe (32), the bearing assembly (36) is arranged at the other end of the feeding pipe (32), and the other end of the screw (33) is arranged in the bearing assembly (36), the outlet of the feeding pipe (32) is connected with the inlet of the asphalt distributor (5).

8. The asphalt coating method according to claim 7, wherein a seal (39) is provided between the feed pipe (32) and the bearing assembly (36).

9. Method for bituminous coating according to claim 7, characterized in that the other end of the screw (33) is sheathed with a counter vane (35).

10. The asphalt coating method according to claim 7, wherein the outlet of the asphalt storage tank (4) is flexibly connected with the inlet of the feeding pipe (32), a lifting driving member (38) is arranged in the asphalt storage tank (4), and the output end of the lifting driving member (38) is connected with the feeding pipe (32).

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