Double-shaft adjustable cold-mixing and cold-paving paving box

Abstract

The invention provides a double-shaft adjustable cold mixing and cold paving box which comprises a paving box body, height lifting mechanisms, feeding and returning screw mechanisms and sliding shoes, the two ends of the paving box body are both provided with the height lifting mechanisms used for lifting the paving thickness, and the paving box body is internally provided with a pair of feeding and returning screw mechanisms; the pair of feeding and returning screw mechanisms are oppositely arranged in the longitudinal direction of the paving box body, sliding shoes are arranged at the two longitudinal ends of the front side of the paving box body, and a vibration screed plate mechanism used for extruding out liquid to isolate an asphalt mixture is arranged on the rear side of the paving box body in the longitudinal direction; an integrated vibration compaction structure is formed on the rear portion of the paving box through the integrated vibration screed plate mechanism, paving operation and preliminary vibration compaction are conducted synchronously, longitudinal scratches, caused by the fact that demulsifying materials are attached to a screed plate, on the paving surface are avoided in a vibration water squeezing mode, and the paving quality is improved. And the appearance quality and the construction precision of the cold-mixed and cold-laid ultrathin cover surface are further improved.

Description

Technical Field

[0001] This invention belongs to the field of paving box technology, specifically relating to a dual-axis adjustable cold-mix paving box. Background Technology

[0002] Currently, microsurfacing technology is widely used in preventive maintenance of asphalt pavements. Microsurfacing construction requires the use of rectangular pavers for the distribution and paving of the slurry mixture. Rectangular pavers are widely used due to their simple structure and convenient construction. However, when directly applied to cold-mix cold-lay ultra-thin overlay construction with higher material performance requirements, the material characteristics of the cold-mix cold-lay mixture, which uses high-viscosity, high-rubber modified emulsified asphalt and a specific gradation, differ significantly from those of the slurry mixture used in microsurfacing. The rectangular pavers rely on a low-powered auger spreader and are relatively lightweight, resulting in insufficient mixing, conveying, and distribution capacity for high-viscosity cold-mix mixtures (especially when the mixture is dry or the aggregate size is slightly large). This easily leads to segregation or uneven distribution, failing to form a uniform and dense paved surface. During micro-surfacing construction, the "rectangular" paving box is essentially a material trough. During construction, it mainly controls the paving width and thickness, but cannot perform any pre-compaction on the mixture. Therefore, it is difficult to achieve the required density and durability of the mixture for cold-mixed, cold-laid, ultra-thin overlay paving.

[0003] Therefore, the "rectangular" paving box used in traditional micro-surfacing construction severely restricts the application of cold-mix cold-lay ultra-thin overlay construction technology in the field of preventive maintenance of asphalt pavement, and cannot meet its high standards for smoothness, density and early strength. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to provide a biaxial adjustable cold-mix paving box. By setting a vibration mechanism at the rear of the paving box to achieve vibration compaction of the mixture during the paving process, the density and durability of the mixture can be improved.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A dual-axis adjustable cold-mix paving box includes a paving box body, a height lifting mechanism, a feed and return auger mechanism, and slippers. Both ends of the paving box body are provided with height lifting mechanisms for increasing the paving thickness. A pair of feed and return auger mechanisms are provided inside the paving box body, and the pair of feed and return auger mechanisms are arranged opposite each other along the longitudinal direction of the paving box body. Slippers are provided at both ends of the front longitudinal direction of the paving box body. A vibrating screed mechanism for squeezing out liquid to isolate the asphalt mixture is provided along the longitudinal direction of the rear side of the paving box body.

[0007] Furthermore, the paving box includes a front frame assembly, a rear frame assembly, a middle plate assembly, and a side plate assembly. The two ends of the front frame assembly and the rear frame assembly are connected between a pair of side plate assemblies and are radially spaced apart. The middle plate assembly is located between a pair of side plate assemblies and at least one end is hinged to the front frame assembly or the rear frame assembly. A pair of feed and return auger mechanisms are located between the front frame assembly and the rear frame assembly, and the two ends of each feed and return auger mechanism are slidably connected to the side plate assembly and the middle plate assembly, respectively. The vibrating screed mechanism is provided on the rear frame assembly, and the sliding shoe is provided on the side plate assembly.

[0008] Furthermore, the rear frame assembly includes a rear frame, a rear frame adjustment assembly, and a rear frame hinge assembly. A pair of rear frames are arranged opposite each other, with their upper ends connected by the rear frame adjustment assembly, and their lower ends hinged by the rear frame hinge assembly. The front frame assembly includes a front frame, a front frame adjustment assembly, and a front frame hinge assembly. A pair of front frames are arranged opposite each other, with their upper ends connected by the front frame adjustment assembly, and their lower ends hinged to the middle plate assembly by the front frame hinge assembly. The vibrating ironing plate mechanism is provided on the rear frame. A vertical adjustment mechanism is provided on the middle plate assembly, and one end of the feed and return screw mechanism is connected to the vertical adjustment mechanism. The vibrating ironing plate mechanism is provided on the rear frame.

[0009] Furthermore, the vibrating ironing board mechanism includes a drive motor, a fixed plate, guide columns, water injection pipes, a return spring, an eccentric shaft, a vibration transmission assembly, an ironing board, and an ironing board guard plate. The two ends of the eccentric shaft are slidably nested inside the rear frame. The drive motor is located at the upper end of the rear frame and is used to drive the eccentric shaft to rotate. Several fixed plates are sequentially adjacent longitudinally and located at the lower end of the rear frame. Several vibration transmission assemblies are sequentially spaced on the fixed plates, with one end abutting against the eccentric shaft and the other end connected to the fixed plates. Several ironing board guard plates are sequentially spaced at the lower end of the rear frame, each guard plate embedding the ironing board, and a water storage gap exists between the guard plates. Several guide columns pass through the fixed plates and the rear frame and connect to the ironing board guard plates. The fixed plate is slidably sleeved on the guide columns and spaced from the rear frame. The return spring is sleeved on the guide columns located within the gap. Several water injection pipes are sequentially spaced on the fixed plates, with one end extending to the water storage gap.

[0010] Furthermore, a water-spreading plate is provided in the water storage gap, which is in contact with the ironing plate guard plate, and the water-spreading plate is provided with water outlet holes that are connected to the water injection pipe in an array at intervals.

[0011] Furthermore, the eccentric shaft includes a rotating shaft and an eccentric sleeve. The eccentric sleeve is fitted on the rotating shaft, and the first driven sprocket is fitted on the rotating shaft. The vibration transmission assembly includes a T-shaped bracket and a bearing. The bearing is slidably fitted on one end of the T-shaped bracket to resist the eccentric sleeve, and the other end of the T-shaped bracket is connected to the fixing plate.

[0012] Furthermore, the feeding and return screw mechanism includes a return screw assembly, a feeding screw assembly, and a drive motor. The return screw assembly and the feeding screw assembly are radially parallel and spaced apart. The return screw assembly is slidably connected to the side plate assembly and the vertical adjustment mechanism at both ends near the front frame assembly. The feeding screw assembly is slidably connected to the side plate assembly and the vertical adjustment mechanism at both ends near the rear frame assembly. The drive motor is mounted on the side plate assembly and is used to drive the return screw assembly and the feeding screw assembly.

[0013] Furthermore, the return screw assembly includes a return screw shaft and return screw blades, with the return screw shaft axially wound with the return screw blades. The two ends of the return screw shaft are slidably embedded in the middle plate assembly and the side plate assembly, respectively. The feed screw assembly includes a feed screw shaft and feed screw blades, with the feed screw shaft axially wound with the feed screw blades. The two ends of the feed screw shaft are slidably embedded in the side plate assembly and the vertical adjustment mechanism, respectively. The return screw shaft and the feed screw shaft are spaced apart from each other. The drive motor is mounted on the side plate assembly and is synchronously driven and connected to the feed screw shaft and the return screw shaft.

[0014] Furthermore, the front frame includes a front inner frame, a front outer frame, and a telescopic component. One end of the front outer frame is connected to the side panel assembly, one end of the front inner frame is connected to the middle plate assembly, and the other end of the front inner frame is slidably nested within the other end of the front outer frame. One end of the telescopic component is connected to the side panel assembly, and the other end is connected to the front inner frame and is used to drive the front inner frame to telescopically move along the front outer frame.

[0015] Furthermore, the height adjustment mechanism includes a height adjustment screw, a guide sleeve, and a connecting frame. One end of the connecting frame is disposed on the upper end of the side plate assembly. One end of the height adjustment screw is slidably nested on the connecting frame. The other end of the height adjustment screw is screwed to one end of the guide sleeve. The two ends of the rear frame assembly are slidably connected to the lower ends of a pair of side plate assemblies, respectively. The other end of the guide sleeve is connected to the end of the rear frame assembly.

[0016] Because the present invention adopts the above technical solution, it has the following advantages and effects:

[0017] The present invention discloses a biaxial adjustable cold-mix paving box, which forms an integrated vibration compaction structure at the rear of the paving box through a vibration screed mechanism, realizing the simultaneous paving operation and preliminary vibration compaction. This breaks through the limitations of traditional "rectangular" paving boxes, which can only control the width and thickness and cannot pre-compact, significantly improving the initial density and smoothness of the mixture after paving, laying the initial structural stability for the cold-mix ultra-thin overlay layer, and meeting its high standard requirements for density and early strength.

[0018] This invention discloses a biaxial adjustable cold-mix cold-pave paving box. During vibration, the vibrating screed mechanism squeezes out moisture, avoiding longitudinal scratches on the paving surface caused by the adhering of demulsifier to the screed. This further improves the appearance quality and construction precision of cold-mix cold-pave ultra-thin overlays. It effectively solves the functional defects of traditional micro-surfacing "rectangular" paving boxes in the construction of cold-mix cold-pave ultra-thin overlays, breaks through the equipment bottleneck of this maintenance technology application, and helps to promote the cold-mix cold-pave ultra-thin overlay technology to higher quality and wider range, better adapting to the high construction quality requirements of asphalt pavement preventive maintenance.

[0019] The present invention discloses a dual-axis adjustable cold-mix paving box, which greatly enhances the mixing, conveying and uniform distribution capabilities of cold-mixed materials (especially those that are dry or have slightly larger aggregate particle sizes) through the dual-axis feeding and returning screw mechanism. It effectively adapts to the high viscosity characteristics of cold-mixed materials, fundamentally improves the problems of uneven distribution and easy segregation of traditional paving boxes, and ensures the uniformity of the paved surface. Attached Figure Description

[0020] Figure 1 This is an isometric structural diagram of the paving box of the present invention. Figure 1 .

[0021] Figure 2 This is an isometric structural diagram of the paving box of the present invention. Figure 2 .

[0022] Figure 3 This is a top view of the paving box of the present invention.

[0023] Figure 4 This is a rear view structural schematic diagram of the paving box of the present invention.

[0024] Figure 5 This is a schematic diagram of the height lifting mechanism, side plate assembly, and slipper assembly structure of the present invention.

[0025] Figure 6 yes Figure 5 A schematic diagram of the explosion structure.

[0026] Figure 7 This is a schematic diagram of the assembly structure of the plate assembly and the front frame hinge assembly in this invention.

[0027] Figure 8 yes Figure 7 A schematic diagram of the explosion structure.

[0028] Figure 9 This is a schematic diagram of the assembly structure of the rear frame assembly and the vibrating ironing plate mechanism.

[0029] Figure 10 yes Figure 9 A sectional view along line AA.

[0030] Figure 11 yes Figure 9 A schematic diagram of the explosion structure.

[0031] Figure 12 yes Figure 11 A magnified schematic diagram of a portion of B.

[0032] Figure 13 This is an exploded structural diagram of the front frame assembly of the present invention.

[0033] Figure 14 This is an exploded structural diagram of the feeding and returning screw mechanism of the present invention.

[0034] In the attached diagram, 1-paving box body, 11-front frame assembly, 111-front frame, 1111-front inner frame, 1112-front outer frame, 112-front frame adjustment assembly, 113-front frame hinge assembly, 1131-middle plate connecting plate, 1132-front frame connecting plate, 1133-front frame support plate, 12-rear frame assembly, 121-rear frame, 122-rear frame adjustment assembly, 123-rear frame hinge assembly, 13-middle plate assembly, 131-middle plate, 132-middle rod, 133-vertical adjustment mechanism, 14-side plate assembly, 141-inner plate, 1411-slot, 142-outer plate, 2-height lifting mechanism, 21-height adjusting screw, 22-guide sleeve, 23-turntable, 24-connecting frame, 25-sliding plate, 3-feed and return material screw mechanism, 31-feed screw Components: 311-Feeding auger shaft, 312-Feeding auger blade, 32-Returning auger assembly, 321-Returning auger shaft, 322-Returning auger blade, 33-Drive motor, 34-Second drive sprocket, 35-Returning driven sprocket, 36-Feeding driven sprocket, 37-Second chain, 4-Slipper, 5-Vibrating ironing plate mechanism, 51-Drive motor, 52-Fixing plate, 53-Guide column, 54-Water injection pipe, 55-Reset spring, 56-Eccentric shaft, 561-Rotating shaft, 562-Eccentric sleeve, 57-Vibration transmission assembly, 571-T-shaped bracket, 572-Bearing, 573-Hinge shaft, 58-Ironing plate, 59-Ironing plate guard plate, 510-Water distribution plate, 511-First driven sprocket, 512-First drive sprocket, 513-First chain. Detailed Implementation

[0035] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of the essential spirit of the technical solution of the present invention.

[0036] like Figures 1-4 As shown. This invention discloses a biaxial adjustable cold-mix paving box, comprising a paving box body 1, a height lifting mechanism 2, a feed and return auger mechanism 3, and slippers 4. Height lifting mechanisms 2 for increasing the paving thickness are provided at both ends of the rear longitudinal side of the paving box body 1, and slippers 4 are provided at both ends of the front longitudinal side of the paving box body 1. A pair of feed and return auger mechanisms 3 are provided inside the paving box body 1, arranged opposite each other along the longitudinal direction of the paving box body 1. A vibrating screed mechanism 5 for squeezing out liquid to isolate the asphalt mixture is provided along the rear longitudinal side of the paving box body 1. During paving, the vibrating screed mechanism 5 squeezes out the liquid through vibration, forming an isolation layer on the surface of the asphalt mixture on the paved road surface, preventing the asphalt mixture from adhering to the bottom surface of the paving box and affecting the road quality. The liquid is preferably water.

[0037] Furthermore, the paving box 1 includes a front frame assembly 11, a rear frame assembly 12, a middle plate assembly 13, and a side plate assembly 14. The two ends of the front frame assembly 11 and the rear frame assembly 12 are connected between a pair of side plate assemblies 14 and are radially spaced apart. The middle plate assembly 13 is located between a pair of side plate assemblies 14 and at least one end is hinged to the front frame assembly 11 or the rear frame assembly 12. A pair of feed and return screw mechanisms 3 are located between the front frame assembly 11 and the rear frame assembly 12, and the two ends of each feed and return screw mechanism 3 are slidably connected to the side plate assembly 14 and the middle plate assembly 13, respectively. The vibrating screed mechanism 5 is disposed on the rear frame assembly 12, and the front end of each side plate assembly 14 is provided with a sliding shoe 4.

[0038] Specifically, the front frame assembly 11 and the rear frame assembly 12 are arranged side by side with relative intervals along the radial direction of the paving box 1. Both ends of the front frame assembly 11 and the rear frame assembly 12 are perpendicularly connected to a pair of side plate assemblies 14. The front frame assembly 11, the rear frame assembly 12, and the pair of side plate assemblies 14 enclose a rectangular cavity. The middle plate assembly 13 is located in the longitudinal middle of the paving box 1. One end of the middle plate assembly 13 is hinged to the inner middle of the front frame assembly 11, dividing the rectangular cavity into two symmetrical cavities. A feed and return screw mechanism 3 is provided at both ends of the longitudinal direction of each cavity.

[0039] like Figures 5-6As shown. The side panel assembly 14 includes an inner panel 141 and an outer panel 142. The inner panel 141 and the outer panel 142 are interlocked with a cavity in the middle. The length of the inner panel 141 is greater than the length of the outer panel 142. The lower end of the inner panel 141 has an outwardly extending flange, and the lower end of the outer panel 142 abuts against the flange. The front frame assembly 11 is fixedly connected to the inner side of the front end of the inner panel 141, and the rear frame assembly 12 is slidably connected to the inner side of the rear end of the inner panel 141. The sliding shoe 4 is provided on the lower end surface of the inner panel 141 and extends forward. During operation, the sliding shoe 4 contacts the road surface while the front and rear frame assemblies do not contact the road surface, reducing the contact area between the paving box and the road surface, making paving more stable.

[0040] like Figures 7-8 As shown. The middle plate assembly 13 includes a middle plate 131 and a middle rod 132. The middle rod 132 is connected to the upper end of the middle plate 131. One end of the middle rod 132 extends out of the middle plate 131 and is connected to the front frame assembly 11. The lower end of the middle plate 131 is slidably nested into one end of the feed and return screw mechanism 3. The other end of the feed and return screw mechanism 3 is disposed on the inner plate 141 of the side plate assembly 14.

[0041] like Figures 9-12 As shown. Further, the rear frame assembly 12 includes a rear frame 121, a rear frame adjustment assembly 122, and a rear frame hinge assembly 123. A pair of rear frames 121 are arranged opposite each other, and the upper parts of the opposite ends are connected by the rear frame adjustment assembly 122, and the lower parts of the opposite ends are hinged by the rear frame hinge assembly 123.

[0042] like Figure 13 As shown and Figure 7 As shown, the front frame assembly 11 includes a front frame 111, a front frame adjustment assembly 112 and a front frame hinge assembly 113. A pair of front frames 111 are arranged opposite each other and their upper parts are connected by the front frame adjustment assembly 112. One side of the opposite ends is hinged to the middle plate assembly 13 by the front frame hinge assembly 113. A vibrating ironing plate mechanism 5 is provided on the rear frame 121.

[0043] Continue to refer to Figure 8 The middle plate assembly 13 is also equipped with a vertical adjustment mechanism 133, and one end of the feed and return screw mechanism 3 is connected to the vertical adjustment mechanism 133.

[0044] Specifically, both the rear frame adjustment assembly 122 and the front frame adjustment assembly 112 include a pair of horizontal adjustment screws and adjustment sleeves. One end of the pair of horizontal adjustment screws is screwed to both ends of the adjustment sleeves, and the threads of the pair of horizontal adjustment screws are opposite to each other. The other end of the pair of horizontal adjustment screws is hinged to the upper end of the pair of rear frames 121 or the upper end of the pair of front frames 111.

[0045] The rear frame hinge assembly 123 includes a pair of horizontal lugs nested together and a hinge shaft. One end of the pair of horizontal lugs is connected to the lower ends of both ends of a pair of rear frame assemblies 12, and the other end of the pair of horizontal lugs is hinged via the hinge shaft. Each pair of horizontal lugs consists of two lugs spaced apart from each other. The horizontal lugs at one end are embedded in the horizontal lugs at the other end, and the ends of the lugs have hinge holes, with the hinge shaft nested within the hinge holes. Each pair of rear frames 121 has an oblique lug at its opposite upper end. One end of the horizontal adjustment screw of the rear frame adjustment assembly 122 is hinged within the oblique lug via a pivot. The oblique lugs are inclined outwards from the upper end of the rear frame 121. Each pair of front frames 111 has a vertical lug at its opposite upper end. One end of the horizontal adjustment screw of the front frame adjustment assembly 112 is hinged within the vertical lug via a pivot.

[0046] Continue to refer to Figure 8 The front frame hinge assembly 113 includes a front frame connecting plate 1132, a middle plate connecting plate 1131, and connecting bolts. The front frame connecting plate 1132 connects the inner ends of a pair of front frames, and the middle plate connecting plate 1131 connects the end of the middle plate. The middle plate connecting plate 1131 is connected to the front frame connecting plate 1132. A pair of vertically spaced connecting holes are provided on both the left and right sides of the front frame connecting plate 1132. The connecting holes are located on the outer side of the front frame connecting plate 1132, and connecting bolts for connecting to the front frame 111 are installed in the connecting holes. At least one connecting hole at the upper end of the front frame connecting plate 1132 is an oblong hole, and the connecting bolts are installed in the oblong hole to achieve angle adjustment of the front frame 111. A front frame support plate 1133 is also provided at the bottom of the front frame connecting plate 1132. The front frame support plate 1133 extends out of the front frame 111 and, together with the slipper 4, supports the paving box 1.

[0047] See also Figure 8 The vertical adjustment mechanism 133 includes a slider, a screw, and a groove. A pair of grooves are vertically opened on the middle plate 131, and a slider is provided in each groove. The slider can move along the groove. A screw is provided on the middle rod 132. One end of the screw is screwed to the middle rod 132 and extends out of the middle rod 132. The other end of the screw extends into the groove and connects to the slider. One end of the feed and return screw mechanism 3 is slidably connected to a pair of sliders.

[0048] When adjusting the camber of the paving, the adjusting sleeve of the rear frame adjusting assembly 122 is rotated, which drives the pair of horizontal adjusting screws of the rear frame adjusting assembly 122 to extend and retract synchronously. The pair of rear frames 121 rotate along the hinge axis to adjust the curvature of the rear frame assembly 12. The adjusting sleeve of the front frame adjusting assembly 112 is rotated, which drives the pair of horizontal adjusting screws of the front frame adjusting assembly 112 to extend and retract synchronously to adjust the curvature of the front frame assembly 11. Then, the vertical adjusting mechanism 133 adjusts the relative end heights of the pair of feed and return screw mechanisms 3, thereby completing the adjustment of the camber of the paving.

[0049] In this invention, the rear frame 121 is a split structure, and a pair of rear frames 121 can be combined and used according to the actual paving width. The rear frame 121 is composed of a first rectangular opening box, a second rectangular opening box, and a third rectangular opening box connected at their ends to form a cuboid frame. The cross-sections of the first, second, and third rectangular opening boxes are C-shaped. The lengths of the first, second, and third rectangular opening boxes increase sequentially, and one end of the first rectangular opening box is slidably connected to the side plate assembly 14. The rear frame adjustment assembly 122 is located on the upper part of the third rectangular opening box, and the rear frame hinge assembly 123 is located on the lower part of the third rectangular opening box.

[0050] Furthermore, the vibrating ironing plate mechanism 5 includes a drive motor 51, a fixed plate 52, a guide column 53, a water injection pipe 54, a return spring 55, an eccentric shaft 56, a vibration transmission assembly 57, an ironing plate 58, and an ironing plate guard plate 59. The two ends of the eccentric shaft 56 are slidably nested inside the rear frame 121. The drive motor 51 is located at the upper end of the rear frame 121 and is used to drive the eccentric shaft 56 to rotate. Several fixed plates 52 are sequentially adjacent along the longitudinal direction and located at the lower end of the rear frame 121. Several vibration transmission assemblies 57 are sequentially spaced on the fixed plates 52, and one end of each assembly abuts against the eccentric shaft 56. 6. The other end is connected to a fixing plate 52. Several ironing plate guards 59 are arranged at intervals at the lower end of the rear frame 121. Each ironing plate guard 59 is embedded with an ironing plate 58. There is a water storage gap between the ironing plate guard 59 and the ironing plate 58. Several guide posts 53 pass through the fixing plate 52 and the rear frame 121 and are connected to the ironing plate guard 59. The fixing plate 52 is slidably sleeved on the guide posts 53 and there is a gap between it and the rear frame 121. A return spring 55 is sleeved on the guide post 53 located in the gap. Several water injection pipes 54 are arranged at intervals on the fixing plate 52, and one end extends to the water storage gap.

[0051] Specifically, the rectangular open box of the rear frame 121 is provided with spaced fixed bases. The eccentric shaft 56 is slidably connected to the fixed bases through bearings. The eccentric shaft 56 is axially connected in sequence through couplings. The drive motor 51 is located at the upper end of one of the rear frames 121. A first driven sprocket 511 is sleeved on the eccentric shaft 56. A first drive sprocket 512 is sleeved on the output end of the drive motor 51. The first driven sprocket 511 and the first drive sprocket 512 are connected by a first chain 513.

[0052] The cross-section of the fixing plate 52 is n-shaped, and the plate surface at the lower end of the rear frame 121 is U-shaped. The fixing plate 52 is set on the lower end plate surface of the rear frame 121 to form a gap between the two.

[0053] The drive motor 51 drives the eccentric shaft 56 to rotate at high speed, and transmits the vibration to the screed guard plate 59 and screed plate 58 through the vibration transmission component 57. During the vibration process, the water injected from the water injection pipe 54 into the water storage gap of the screed guard plate 59 and screed plate 58 is squeezed out through the gap. By leaving a water storage gap, the problem of longitudinal scratches on the surface caused by the extrusion of water during vibration can be solved.

[0054] Furthermore, a water-spreading plate 510 is provided in the water storage gap between the ironing plate guard plate 59 and the ironing plate 58, which is in contact with the ironing plate guard plate 59. The water-spreading plate 510 is provided with water outlet holes that are connected to the water injection pipe 54 in an array at intervals.

[0055] Specifically, the ironing plate guard plate 59 has a U-shaped groove, which forms a water storage gap with the ironing plate 58. A water distribution plate 510 is set inside the U-shaped groove and bolted to it. The bottom side of the water distribution plate 510, which is in contact with the U-shaped groove, has a channel. Water outlets are spaced within the channel, and a water injection pipe 54 passes through the ironing plate guard plate 59 and traverses the channel. The water distribution plate 510 is in contact with the ironing plate guard plate 59, which closes the channel to form a cavity. The water injection pipe 54 injects pressurized water into the cavity, which flows out through the water outlets and is then squeezed out of the ironing plate 58 during vibration.

[0056] Furthermore, the vibration transmission assembly 57 includes a T-shaped bracket 571, a bearing 572, and a hinge shaft 573. The upper end of the T-shaped bracket 571 has a U-shaped opening, within which the hinge shaft 573 is installed. The bearing 572 is fitted onto the hinge shaft 573. The bottom of the T-shaped bracket 571 is connected to a fixed plate 52. The eccentric shaft 56 includes a rotating shaft 561 and an eccentric sleeve 562. The eccentric sleeve 562 is fitted onto the rotating shaft 561, and the eccentric sleeve 562 and the rotating shaft 561 are bolted together. A first driven sprocket 511 is fitted onto the rotating shaft 561. The eccentricity of the eccentric sleeve 562 is 0.75 mm, and the outer circumference of the bearing 572 stops against the outer circumference of the eccentric sleeve 562. When the eccentric shaft 56 rotates, it gradually presses the T-shaped bracket 571 downwards, transmitting vibration to the ironing plate guard plate 59 through the fixed plate. The return spring 55 is used to reset the fixed plate after the centrifugal force of the eccentric sleeve 562 disappears.

[0057] like Figure 13 As shown. Further, the front frame 111 includes a front inner frame 1111, a front outer frame 1112, and a telescopic member (not shown in the figure). One end of the front outer frame 1112 is connected to the side panel assembly 14, one end of the front inner frame 1111 is connected to the middle plate assembly 13, and the other end of the front inner frame 1111 slides and nests within the other end of the front outer frame 1112. One end of the telescopic member is connected to the side panel assembly 14, and the other end is connected to the front inner frame 1111 and is used to drive the front inner frame 1111 to telescopically move along the front outer frame 1112.

[0058] Specifically, the front frame assembly 11 has a telescopic structure, and its length can be adjusted according to the combined length of the rear frame 121. The inner front frame 1111 and the outer front frame 1112 are a pair of mutually sliding and nested square cylindrical bodies. The inner front frame 1111 is nested within the outer front frame 1112 and can slide longitudinally to adjust its length. The fixed end of the telescopic component is hinged to the side plate assembly 14 near the outer front frame 1112, and the telescopic end of the telescopic component is hinged to the inner front frame 1111. Adjusting the length of one of the front frames 111 using the telescopic component achieves a length match with the combined length of the rear frame 121. The telescopic component is preferably a hydraulic cylinder.

[0059] like Figure 14 As shown. Further, the feed and return screw mechanism 3 includes a return screw assembly 32, a feed screw assembly 31, and a drive motor 33. The return screw assembly 32 and the feed screw assembly 31 are arranged radially side by side with relative spacing. The return screw assembly 32 is located near the front frame assembly 11 and its two ends are slidably connected to the side plate assembly 14 and the middle plate assembly 13, respectively. The feed screw assembly 31 is located near the rear frame assembly 12 and its two ends are slidably connected to the side plate assembly 14 and the middle plate assembly 13, respectively. The drive motor 33 is located on the side plate assembly 14 and is used to connect and drive the return screw assembly 32 and the feed screw assembly 31. The mixed asphalt mixture enters the middle part of the paving box 1 and is distributed to both sides of the paving box 1 by the feed screw assembly 31. If the asphalt mixture accumulates on both sides, it is pushed back to the middle of the paving box 1 by the return screw assembly 32. This cycle repeats continuously. The return screw assembly 32 and the feed screw assembly 31 increase the fluidity of the asphalt mixture in the paving box 1 and prevent the asphalt mixture from breaking down.

[0060] Furthermore, the return screw assembly 32 includes a return screw shaft 321 and return screw blades 322. The return screw shaft 321 is axially wound with the return screw blades 322. The two ends of the return screw shaft 321 are slidably embedded on the middle plate assembly 13 and the side plate assembly 14, respectively. The feed screw assembly 31 includes a feed screw shaft 311 and a feed screw blades 312. The feed screw shaft 311 is axially wound with the feed screw blades 312. The two ends of the feed screw shaft 311 are slidably embedded on the side plate assembly 14 and the vertical adjustment mechanism 133, respectively. The return screw shaft 321 and the feed screw shaft 311 are spaced apart from each other. The drive motor 33 is mounted on the side plate assembly 14 and is synchronously driven and connected to the feed screw shaft 311 and the return screw shaft 321.

[0061] Specifically, the drive motor 33 is mounted on the inner plate 141 of the side plate assembly 14. One end of the return screw shaft 321 and one end of the feed screw shaft 311 are fixed to the inner plate 141 by bearings. The other end of the return screw shaft 321 and the other end of the feed screw shaft 311 are both fixed to the slider of the vertical adjustment structure of the middle plate assembly by bearings. The height of the other end of the return screw shaft 321 and the other end of the feed screw shaft 311 can be adjusted by the screw of the vertical adjustment structure.

[0062] The output end of the drive motor 33, the end of the return screw shaft 321, and the end of the feed screw shaft 311 all pass through the inner plate 141 and extend into the gap between the inner plate 141 and the outer plate 142. The drive motor 33 is located at the upper center of the return screw shaft 321 and the feed screw shaft 311 on one side of the inner plate 141. The output end of the drive motor 33 is fitted with a second drive sprocket 34, one end of the return screw shaft 321 is fitted with a return driven sprocket 35, and the feed screw shaft 311 is fitted with a feed driven sprocket 36. The second drive sprocket 34, the return driven sprocket 35, and the feed driven sprocket 36 are connected by a second chain 37. The drive motor 33 simultaneously drives the return screw shaft 321 and the feed screw shaft 311 to rotate in the same direction. When the feed auger blades 312 and the return auger blades 322 rotate in opposite directions, the return auger shaft 321 and the feed auger shaft 311 rotate in the same direction. This causes the feed auger blades 312 to gradually push the asphalt mixture from the middle to both sides when they rotate, while the return auger blades 322 gradually push the asphalt mixture from both sides back to the middle when they rotate, and so on.

[0063] See you again Figure 6 Furthermore, the paving thickness of the paving box is achieved by adjusting the ground clearance of the rear frame assembly 12 through the height adjustment mechanism 2. The height adjustment mechanism 2 includes a height adjustment screw 21, a guide sleeve 22, and a connecting frame 24. One end of the connecting frame 24 is located at the upper end of the side plate assembly 14. One end of the height adjustment screw 21 is slidably nested on the connecting frame 24. The other end of the height adjustment screw 21 is screwed to one end of the guide sleeve 22. The two ends of the rear frame assembly 12 are slidably connected to the lower ends of a pair of side plate assemblies 14, and the other end of the guide sleeve 22 is connected to the end of the rear frame assembly 12.

[0064] Specifically, the lower end of the connecting frame 24 is connected to the outer rear end of the inner plate 141 of the side plate assembly 14. The upper end of the height adjusting screw 21 is connected to the connecting frame 24 via a bearing, and a turntable 23 is provided at the end of the height adjusting screw 21 extending out of the connecting frame 24. A slot 1411 is provided on the inner plate 141 of the side plate assembly 14 located at the lower end of the guide sleeve 22. A sliding plate 25 is connected to the lower end of the guide sleeve 22. The sliding plate 25 is slidably nested in the slot. The end of the rear frame 121 is slidably attached to the inner plate 141 and connected to one side of the sliding plate 25. By rotating the turntable 23, the turntable 23 drives the adjusting sleeve 22 to rise and fall via the height adjusting screw 21. The adjusting sleeve 22 drives the sliding plate 25 to move axially within the slot 1411 to adjust the ground clearance of the rear frame 121.

Claims

1. A dual-axis adjustable cold-mix paving box, characterized in that, The paving box includes a paving box (1), a height lifting mechanism (2), a feed and return screw mechanism (3), and a slipper (4). Both ends of the paving box (1) are provided with a height lifting mechanism (2) for increasing the paving thickness. A pair of feed and return screw mechanisms (3) are provided inside the paving box (1). The pair of feed and return screw mechanisms (3) are arranged opposite to each other along the longitudinal direction of the paving box (1). The slipper (4) is provided at both ends of the front longitudinal direction of the paving box (1). A vibrating screed mechanism (5) for squeezing out liquid to isolate the asphalt mixture is provided along the longitudinal direction of the rear side of the paving box (1).

2. The dual-axis adjustable cold-mix paving box according to claim 1, characterized in that, The paving box (1) includes a front frame assembly (11), a rear frame assembly (12), a middle plate assembly (13), and a side plate assembly (14). The two ends of the front frame assembly (11) and the rear frame assembly (12) are connected between a pair of side plate assemblies (14) and are radially spaced apart. The middle plate assembly (13) is located between a pair of side plate assemblies (14) and at least one end is hinged to the front frame assembly (11) or the rear frame assembly (12). A pair of feed and return screw mechanisms (3) are located between the front frame assembly (11) and the rear frame assembly (12), and the two ends of each feed and return screw mechanism (3) are slidably connected to the side plate assembly (14) and the middle plate assembly (13), respectively. The vibrating ironing plate mechanism (5) is provided on the rear frame assembly (12), and the sliding shoe (4) is provided on the side plate assembly (14).

3. The dual-axis adjustable cold-mix paving box according to claim 1 or 2, characterized in that, The rear frame assembly (12) includes a rear frame (121), a rear frame adjustment assembly (122), and a rear frame hinge assembly (123). A pair of rear frames (121) are arranged opposite each other, with their upper ends connected by the rear frame adjustment assembly (122) and their lower ends hinged by the rear frame hinge assembly (123). The front frame assembly (11) includes a front frame (111), a front frame adjustment assembly (112), and a front frame hinge assembly (113). A pair of front frames (111) are arranged opposite each other. The upper parts of the two opposite ends are connected by a front frame adjustment assembly (112), and one side of the opposite ends is hinged to the middle plate assembly (13) by a front frame hinge assembly (113). The vibrating ironing plate mechanism (5) is provided on the rear frame (121). The middle plate assembly (13) is provided with a vertical adjustment mechanism (133). One end of the feed and return screw mechanism (3) is connected to the vertical adjustment mechanism (133). The vibrating ironing plate mechanism (5) is provided on the rear frame (121).

4. The dual-axis adjustable cold-mix paving box according to claim 3, characterized in that, The vibrating ironing plate mechanism (5) includes a drive motor (51), a fixed plate (52), a guide column (53), a water injection pipe (54), a return spring (55), an eccentric shaft (56), a vibration transmission assembly (57), an ironing plate (58), and an ironing plate guard plate (59). The two ends of the eccentric shaft (56) are slidably nested inside the rear frame (121). The drive motor (51) is located on the upper end of the rear frame (121) and is used to drive the eccentric shaft (56) to rotate. Several fixed plates (52) are adjacent in the longitudinal direction and located at the lower end inside the rear frame (121). Several vibration transmission assemblies (57) are arranged sequentially and spaced apart on the fixed plates (52), and one end of each assembly abuts against the eccentric shaft (56). The other end is connected to the fixing plate (52). Several ironing plate guards (59) are arranged at intervals at the lower end of the rear frame (121). Each ironing plate guard (59) is embedded with an ironing plate (58). There is a water storage gap between the ironing plate guard (59) and the ironing plate (58). Several guide posts (53) pass through the fixing plate and the rear frame and are connected to the ironing plate guards (59). The fixing plate (52) is slidably sleeved on the guide posts (53) and there is a gap between it and the rear frame. The return spring (55) is sleeved on the guide posts (53) located in the gap. Several water injection pipes (54) are arranged at intervals on the fixing plate (52) and one end extends to the water storage gap.

5. The dual-axis adjustable cold-mix paving box according to claim 4, characterized in that, A water-spreading plate (510) is provided in the water storage gap and is attached to the ironing plate guard plate (59). The water-spreading plate (510) is provided with water outlet holes that are connected to the water injection pipe (54) in an array at intervals.

6. The dual-axis adjustable cold-mix paving box according to claim 5, characterized in that, The eccentric shaft (56) includes a rotating shaft (561) and an eccentric sleeve (562). The eccentric sleeve (562) is fitted on the rotating shaft (561), and the first driven sprocket (511) is fitted on the rotating shaft (561). The vibration transmission assembly (57) includes a T-shaped bracket (571) and a bearing (572). The bearing (572) is slidably fitted on one end of the T-shaped bracket (571) to abut against the eccentric sleeve (562), and the other end of the T-shaped bracket (571) is connected to the fixing plate (52).

7. The dual-axis adjustable cold-mix paving box according to claim 6, characterized in that, The feeding and returning screw mechanism (3) includes a returning screw assembly (32), a feeding screw assembly (31), and a drive motor (33). The returning screw assembly (32) and the feeding screw assembly (31) are arranged radially side by side and spaced apart. The returning screw assembly (32) is located near the front frame assembly (11) and its two ends are slidably connected to the side plate assembly (14) and the vertical adjustment mechanism (133), respectively. The feeding screw assembly (31) is located near the rear frame assembly (12) and its two ends are slidably connected to the side plate assembly (14) and the vertical adjustment mechanism (133), respectively. The drive motor (33) is mounted on the side plate assembly (14) and is used to drive the returning screw assembly (32) and the feeding screw assembly (31).

8. The dual-axis adjustable cold-mix paving box according to claim 7, characterized in that, The return screw assembly (32) includes a return screw shaft (321) and return screw blades (322). The return screw shaft (321) is wound with the return screw blades (322). The two ends of the return screw shaft (321) are slidably embedded in the middle plate assembly (13) and the side plate assembly (14), respectively. The feed screw assembly (31) includes a feed screw shaft (311) and a feed screw blades (312). The feed screw shaft (311) is wound with the feed screw blades (312). The two ends of the feed screw shaft (311) are slidably embedded in the side plate assembly (14) and the vertical adjustment mechanism (133), respectively. The return screw shaft (321) and the feed screw shaft (311) are spaced apart from each other. The drive motor (33) is mounted on the side plate assembly (14) and is synchronously driven and connected to the feed screw shaft (311) and the return screw shaft (321).

9. The dual-axis adjustable cold-mix paving box according to claim 8, characterized in that, The front frame (111) includes a front inner frame (1111), a front outer frame (1112), and a telescopic member. One end of the front outer frame (1112) is connected to the side panel assembly (14), one end of the front inner frame (1111) is connected to the middle plate assembly (13), and the other end of the front inner frame (1111) is slidably nested within the other end of the front outer frame (1112). One end of the telescopic member is connected to the side panel assembly (14), and the other end is connected to the front inner frame (1111) and is used to drive the front inner frame (1111) to telescopically move along the front outer frame (1112).

10. The dual-axis adjustable cold-mix paving box according to claim 9, characterized in that, The height adjustment mechanism includes a height adjustment screw (21), a guide sleeve (22), and a connecting frame (24). One end of the connecting frame (24) is disposed on the upper end of the side plate assembly (14). One end of the height adjustment screw (21) is slidably nested on the connecting frame (24). The other end of the height adjustment screw (21) is screwed to one end of the guide sleeve (22). The two ends of the rear frame assembly (12) are slidably connected to the lower ends of a pair of side plate assemblies (14), and the other end of the guide sleeve (22) is connected to the end of the rear frame assembly (12).

Images