Construction technology and paving device for ultra-thick cement-stabilized crushed stone base

Abstract

The present invention relates to the technical field of highway base construction, in particular to a construction process and a paving device for an ultra-thick cement-stabilized crushed stone base, comprising a feeding mechanism, including a receiving hopper and a feeding assembly located below the receiving hopper and extending to the rear side, the feeding assembly comprising a conveyor belt, side guard plates symmetrically arranged on both sides of the conveyor belt and a rectangular frame located below the conveyor belt, the inner sides of both ends of the conveyor belt are slidably sleeved with rotating rollers, and the rotating rollers are fixedly sleeved on a first rotating rod; a paving mechanism arranged at the rear side of the feeding mechanism, comprising a paving plate inclined in a vertical direction and a pressure roller arranged at the rear side of the paving plate, the end of the paving plate close to the feeding mechanism is an inclined upper end; and an operating vehicle body arranged outside the feeding assembly between the feeding hopper and the paving mechanism. The paving device can realize one-time molding of an ultra-thick base, and the molding effect is good, which effectively reduces the labor intensity of the staff and has good practicality.

Description

Technical Field

[0001] The invention relates to the technical field of highway base construction, in particular to a construction process and a paving device for an ultra-thick cement-stabilized crushed stone base. Background Art

[0002] Because cement stabilized gravel base has the advantages of good mechanical strength, frost resistance, stability, durability and self-forming board structure, it has good overall performance and is widely used in road projects. The construction technology of cement stabilized gravel base is also quite mature. It is made by adding appropriate cement and water to the mixture of sand and gravel prepared in a certain proportion, stirring and paving, compacting and curing at the optimal moisture content to form it.

[0003] The construction of cement stabilized gravel base mainly includes the steps of paving, leveling and compacting. In the paving and leveling construction, a paving device is mainly used. After the transport vehicle transports the mixture to the working road surface, it is unloaded into the paving device. The paving and leveling are realized as the paving device moves. For example, the existing public document CN118065207A-A reinforced cement stabilized gravel base road construction process and construction equipment discloses a paving construction equipment. Although such a paving method can realize large-width efficient and stable base paving, such a paving method still has the following shortcomings in actual use:

[0004] 1. Because the distance between the feeding mechanism and the receiving hopper of the existing paving device for feeding materials is fixed, the material output each time is fixed (even if the conveying speed is changed, the problem of material jamming will occur due to the height limitation), so that such paving devices can only be used for paving below 20cm. The construction process of layered paving and compacting water-stabilizing layer is basically adopted for compacting the compacted thickness exceeding 20cm. This construction process has low production efficiency, difficult to control the horizontal spread, weak bonding between layers, poor flatness, difficult to handle the longitudinal joints, and poor overall stress conditions, thus affecting the overall quality of the base layer;

[0005] 2. In order to achieve wide-width paving, the existing paving device will be equipped with a spiral feeding device on the mechanism to achieve uniform paving in the width direction. However, because the spiral device lacks the extrusion force in the side wall direction, the lateral feeding effect cannot achieve the expected effect. In actual paving, auxiliary mechanisms are still needed for paving, which leads to low overall construction efficiency and increased work intensity.

[0006] Therefore, it is necessary to improve the prior art to solve the above-mentioned technical problems. Summary of the invention

[0007] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0008] In view of the problem that the existing cement-stabilized gravel base construction cannot be applied to the one-time forming of ultra-thick base due to the design of the paving device, and the paving forming efficiency is poor, a construction process for ultra-thick cement-stabilized gravel base is proposed.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: a construction process of an ultra-thick cement-stabilized crushed stone base, specifically comprising the following steps;

[0010] S1: The mixture is transported to the working road surface by a transport vehicle, and the transport vehicle unloads the mixture into the receiving hopper by walking in front of the paving vehicle; S2: The height of the paving board of the paving vehicle is adjusted according to the thickness of the base layer, and the feeding mechanism conveys the mixture in the receiving hopper to the paving board for full-width paving; S3: After the paving is completed, it is compacted by a rammer to form a paved surface; S4: A roller that meets the requirements of large-thickness construction is used to roll the mixture in the order of initial compaction, secondary compaction, and final compaction, and water is sprinkled for maintenance after rolling is completed.

[0011] As a preferred solution of the construction process of the ultra-thick cement-stabilized gravel base of the present invention, according to the rolling requirements, the initial compaction adopts a 30t tire test roller to uniformly and steadily compact for 2 times at a speed of 1 m / s, the repeated compaction adopts a 26t BMW single steel wheel vibratory roller to strongly vibrate for 2 times and weakly vibrate for 4 times at a speed of 1 m / s, and the final compaction adopts a 30t tire roller + a 15t double steel wheel roller to uniformly compact for 1 time at a speed of 1 m / s, and the surface is stabilized and polished.

[0012] In addition, the present invention also provides the following technical solutions: a paving device for the construction of an ultra-thick cement-stabilized crushed stone base, comprising a feeding mechanism, including a receiving hopper and a feeding assembly located below the receiving hopper and extending to the rear side, the feeding assembly comprising a conveyor belt, side guard plates symmetrically arranged on both sides of the conveyor belt, and a rectangular frame located below the conveyor belt, the inner sides of both ends of the conveyor belt are slidably sleeved with rotating rollers, the rotating rollers are fixedly sleeved on the first rotating rod, and both ends of the first rotating rod are rotatably sleeved on the matching plate through rolling bearings, the front and rear sides of the side guard plates are provided with rectangular matching grooves for matching the gap of the matching plates in the vertical direction, and the matching plates are fixedly connected to the top surface of the rectangular frame, the front and rear plates of the rectangular frame pass through the rectangular matching grooves so that the left and right plates are located on the outside of the side guard plates, and the middle of the side surface of the side guard plate away from the conveyor belt is vertically aligned. A hydraulic cylinder is fixedly provided, and the output end of the hydraulic cylinder located at the bottom is fixedly connected to the top surface of the rectangular frame; a first rack rod with a free end extending downward is symmetrically fixed on both sides of the bottom surface of the rear plate of the rectangular frame, and a gear plate is meshed on one side of the first rack rod, and a rotating column fixed on one end surface of the gear plate is rotatably sleeved on the side guard plate through a rolling bearing; a paving mechanism arranged on the rear side of the feeding mechanism includes a paving plate inclined in the vertical direction and a pressure roller arranged on the rear side of the paving plate, and one end of the paving plate close to the feeding mechanism is an inclined upper end, and second rack rods are symmetrically fixed on both sides of the top surface of the paving plate close to one end of the feeding mechanism, and the second rack rod is meshed with the gear plate, and the first rack rod and the second rack rod are respectively arranged on both sides of the gear plate; and an operating vehicle body arranged on the outside of the feeding assembly between the receiving hopper and the paving mechanism.

[0013] As a preferred solution of the ultra-thick cement-stabilized gravel base construction paving device of the present invention, one end of the first rotating rod located on the front side extends to the outside of the matching plate and is embedded in the output end of the first motor, and the first motor is fixedly connected to the rectangular frame.

[0014] As a preferred solution of the super-thick cement-stabilized crushed stone base construction paving device of the present invention, limit strips are symmetrically fixed on both sides of the matching plate, and limit grooves for gap matching of the limit strips are opened in the vertical direction on the side walls of the rectangular matching groove.

[0015] As a preferred solution of the super-thick cement-stabilized gravel base construction paving device of the present invention, T-shaped columns are slidably sleeved on the rectangular frames on both sides of the hydraulic cylinder, and the lower ends of the two T-shaped columns are fixedly connected to the same positioning plate, and the positioning plate is fixedly connected to the outer wall of the side guard plate.

[0016] As a preferred scheme of the super-thick cement-stabilized gravel base construction paving device of the present invention, wherein: a discharge port is opened on the bottom surface of the material receiving hopper above the conveyor belt, and material aggregation blocks are symmetrically fixed on the inner walls of the material receiving hopper on both sides of the discharge port, and the vertical cross-section of the material aggregation blocks in the left and right directions is a right-angled triangle, and a lower recess is opened at the top surface of the front side plate of the material receiving hopper, and a material guide rod is fixed on the bottom surface of the material receiving hopper in front of the discharge port, and the vertical cross-section of the material guide rod is a right-angled trapezoid, and the inclined side of the right-angled trapezoid is arranged on the side close to the discharge port; a fixing plate is fixed on the outer wall of the upper end of the side guard plate at the position of the material receiving hopper, and the fixing plate is fixedly connected to the bottom surface of the material receiving hopper by bolts; fixed blocks are symmetrically fixed on the outer walls of the side guard plates on both sides of the hydraulic cylinder, and threaded mounting holes are opened on one side wall of the fixed block in an array along the horizontal direction, and the threaded mounting holes are fixed to the operating vehicle body by bolts.

[0017] As a preferred solution of the super-thick cement-stabilized gravel base construction paving device of the present invention, wherein: a connecting column is fixedly provided on the top surface of the second rack rod, and the upper end of the connecting column is fixedly provided on one side of the bottom surface of the reinforcement plate, and two second guide grooves arranged in the vertical direction are arranged in an array along the horizontal direction on the side wall of the reinforcement plate, and a guide column is gap-fitted in the second guide groove, one end of the guide column is fixedly provided on the side guard plate, and the other ends of the two guide columns are fixedly provided on the same connecting plate; a convex block is also fixedly provided on one side wall of the upper end of the second rack rod, and a first guide groove for gap-fitting of the convex block is provided on one side surface of the side guard plate in the vertical direction.

[0018] As a preferred solution of the paving device for the construction of an ultra-thick cement-stabilized crushed stone base of the present invention, the paving plate is composed of a human-shaped plate and a rectangular plate integrally formed on one side of the feeding component, a side guard frame is provided on the outer side of the top surface of the paving plate, and a notch is provided on the side of the side guard frame close to the feeding component, and a receiving plate is provided on the paving plate at the notch position extending toward the bottom of the conveyor belt; a human-shaped through groove is provided on the paving plate, and a human-shaped adjustment plate is provided in the gap in the human-shaped through groove, the middle closed end of the human-shaped adjustment plate is provided on the side close to the receiving plate, and a discharge groove is provided at the inclined lower end of the paving plate; a human-shaped bottom surface is provided with a A threaded mating hole is provided for spiral mating of the upper end of the bolt column, and the lower end of the bolt column is rotatably connected to the ground of the paving board through a rolling bearing. A slave conical tooth is fixedly provided on the bottom surface of the bolt column, and a main conical tooth is meshed with one side of the slave conical tooth. A rotating shaft is fixedly provided at one end of the main conical tooth, and the other end of the rotating shaft is engaged in the output end of the second motor, and the second motor is fixed on the bottom surface of the paving board; the top surface of the human-shaped adjustment plate is arranged to be a second inclined surface whose height dimension gradually decreases from the middle to both sides; the pressure roller is fixedly sleeved on the second rotating rod, and both ends of the second rotating rod are rotatably connected to the outer side wall of the side guard frame through rolling bearings.

[0019] As a preferred solution of the paving device for constructing an ultra-thick cement-stabilized gravel base layer of the present invention, a horizontally arranged paving plate is fixedly provided on the bottom surface of the discharge trough close to the pressure roller, and the paving plate is arranged in a concave arc shape on the side close to the discharge trough, and the bottom surface of the paving plate at the arc position is arranged as a first inclined surface; the bottom surface of the paving plate is tangent to the outer side wall of the pressure roller.

[0020] The beneficial effects of the present invention are:

[0021] 1. When the paving device is in use, the side guard plate is fixedly connected to the receiving hopper, and the rectangular frame can be moved downward by extending the hydraulic cylinder. Because the rotating roller is fitted on the rectangular frame, the conveyor belt will also move downward synchronously when the hydraulic cylinder is extended. In this way, the distance between the conveyor belt and the receiving hopper can be changed, and the material discharge amount per unit time can be adjusted through this change; when the rectangular frame moves downward, the first rack bar will also move downward synchronously, because the first rack bar and the second rack bar are arranged on both sides of the gear plate and are meshed with the gear plate. When the first rack bar moves downward, the second rack bar will drive the paving plate to move upward. In this way, the distance between the paving plate and the bottom surface will increase while the material discharge amount increases. Through such a design method, one-time forming of base layers of different thicknesses can be achieved, and the forming effect is good, which is especially suitable for one-time forming of base layers of extra-large thicknesses.

[0022] 2. After the mixture enters the paving plate, the human-shaped adjustment plate can be designed to guide the entering mixture to both sides. Under the action of the second motor driving the main conical teeth to rotate forward and reverse, the conical teeth can drive the bolt column to rotate forward and reverse. Because of the spiral matching of the bolt column and the threaded matching hole, the human-shaped adjustment plate can achieve reciprocating motion along the axis of the bolt column. Through the setting of the second inclined surface on the top surface of the human-shaped adjustment plate, the human-shaped adjustment plate can spread the mixture well, so that the mixture discharged from the discharge trough position can be evenly distributed on a large width road surface. The spreading method is simple and efficient, and the labor intensity is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0024] Figure 1 It is a schematic diagram of the overall structure of the paving device for construction of a super-thick cement-stabilized crushed stone base in the present invention.

[0025] Figure 2 For the present invention Figure 1Left side view of the structure.

[0026] Figure 3 It is a schematic diagram of the coordination between the feeding mechanism and the paving mechanism in the present invention.

[0027] Figure 4 For the present invention Figure 3 Vertical cross-section of the structure in the front-to-back direction.

[0028] Figure 5 It is a schematic diagram of the overall structure of the material feeding component in the present invention.

[0029] Figure 6 For the present invention Figure 5 Exploded view of the structure.

[0030] Figure 7 It is a schematic diagram of the overall structure of the paving mechanism in the present invention.

[0031] Figure 8 It is a schematic diagram of the bottom structure of the paving mechanism in the present invention.

[0032] Fig. 9 It is an exploded view of the paving mechanism in the present invention.

[0033] Fig.10 It is a schematic diagram of the overall structure of the human-shaped adjustment plate in the present invention. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1

[0038] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 , which is the first embodiment of the present invention, and this embodiment provides a paving device for the construction of an ultra-thick cement-stabilized crushed stone base. When the paving device is in use, the feeding mechanism 100 is used to receive the mixed material on the transport vehicle and feed the material to the paving mechanism 200 side, and the paving mechanism 200 is used to spread the material, and the operating vehicle body 300 is used for the driver to drive the entire paving device.

[0039] Specifically, it includes a feeding mechanism 100, including a receiving hopper 101 and a feeding assembly 102 located below the receiving hopper 101 and extending to the rear side; a paving mechanism 200 arranged at the rear side of the feeding mechanism 100, including a paving plate 201 inclined in a vertical direction and a pressure roller 203 arranged at the rear side of the paving plate 201, wherein the end of the paving plate 201 close to the feeding mechanism 100 is an inclined upper end, and the inclined setting can enable the mixture to slide from the inclined upper end to the lower end under the action of gravity; and an operating vehicle body 300 arranged on the outside of the feeding assembly 102 between the receiving hopper 101 and the paving mechanism 200.

[0040] See Figure 4 and Figure 6 As shown, the feeding assembly 102 includes a conveyor belt 102a, side guard plates 102b symmetrically arranged on both sides of the conveyor belt 102a, and a rectangular frame 102c located below the conveyor belt 102a, and rotating rollers 102a-1 are slidably sleeved on the inner sides of both ends of the conveyor belt 102a, and the rotating rollers 102a-1 are fixedly sleeved on the first rotating rod 102a-2, and both ends of the first rotating rod 102a-2 are rotatably sleeved on the matching plate 102c-3 through rolling bearings, one end of the first rotating rod 102a-2 located on the front side extends to the outer side of the matching plate 102c-3 and is embedded in the output end of the first motor 102a-3, and the first motor 102a-3 is fixedly connected to the rectangular frame 102c;

[0041] When the above arrangement is in use, the first motor 102a-3 can be used to rotate the first rotating rod 102a-2, and then the rotating roller 102a-1 drives the conveyor belt 102a to move, so as to transport the mixed material.

[0042] See Figure 3 , Figure 5 and Figure 6As shown, both the front and rear sides of the side guard plate 102b are provided with rectangular matching grooves 102b-5 for gap matching with the matching plate 102c-3 in the vertical direction, and the two sides of the matching plate 102c-3 are symmetrically fixed with limit bars 102c-4, and the side walls of the rectangular matching grooves 102b-5 are provided with limit grooves 102b-6 for gap matching with the limit bars 102c-4 in the vertical direction. This arrangement can adjust the matching plate 102c-3 when it moves up and down. 2c-3 plays the role of limiting guide, and the matching plate 102c-3 is fixedly connected to the top surface of the rectangular frame 102c, and the front and rear plates of the rectangular frame 102c pass through the rectangular matching groove 102b-5 so that the left and right plates are located outside the side guard plate 102b, and a hydraulic cylinder 102c-1 is fixedly arranged in the middle of a side surface of the side guard plate 102b away from the conveyor belt 102a in the vertical direction, and the output end of the hydraulic cylinder 102c-1 located at the bottom is fixedly connected to the top surface of the rectangular frame 102c;

[0043] When the above-mentioned arrangement is in use, the rectangular frame 102c can be moved in the vertical direction by the extension and retraction of the hydraulic cylinder 102c-1. Due to the fixed connection between the rectangular frame 102c and the matching plate 102c-3, when the rectangular frame 102c moves up and down, the conveyor belt 102a can be driven to adjust its up and down position relative to the side guard plate 102b, so as to adjust the amount of mixed material discharged per unit time.

[0044] Furthermore, T-shaped columns 102b-4 are slidably sleeved on the rectangular frames 102c on both sides of the hydraulic cylinder 102c-1, and the lower ends of the two T-shaped columns 102b-4 are fixedly connected to the same positioning plate 102b-3, and the positioning plate 102b-3 is fixedly connected to the outer wall of the side guard plate 102b. This setting can play a role in limiting and guiding the movement of the rectangular frame 102c, thereby avoiding the problem of the hydraulic cylinder 102c-1 getting stuck.

[0045] See Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the bottom surface of the rear plate of the rectangular frame 102c is symmetrically fixed with a first rack rod 102c-2 whose free end extends downward, and one side of the first rack rod 102c-2 is meshed with a gear plate 102d, and a rotating column 102d-1 fixed on one end surface of the gear plate 102d is rotatably sleeved on the side guard plate 102b through a rolling bearing, and the top surface of the material laying plate 201 near one end of the material feeding mechanism 100 is symmetrically fixed with a second rack rod 201c on both sides, and the second rack rod 201c is meshed with the gear plate 102d, and the first rack rod 102c-2 and the second rack rod 201c are respectively arranged on both sides of the gear plate 102d, and a convex block 201c-2 is fixedly arranged on one side wall of the upper end of the second rack rod 201c, and a first guide groove 102b-8 for clearance fit of the convex block 201c-2 is opened in the vertical direction on one side surface of the side guard plate 102b, which can play a role of limiting and guiding the movement of the second rack rod 201c;

[0046] When the above-mentioned arrangement is in use, when the hydraulic cylinder 102c-1 drives the rectangular frame 102c to move up and down, the first rack rod 102c-2 will move up and down synchronously. Because the first rack rod 102c-2 and the second rack rod 201c are arranged on both sides of the gear plate 102d and are both engaged with the gear plate 102d, when the first rack rod 102c-2 moves up and down to drive the gear plate 102d to rotate, the second rack rod 201c will synchronously drive the paving plate 201 to move up and down.

[0047] Furthermore, a connecting column 201c-1 is fixedly provided on the top surface of the second rack rod 201c, and the upper end of the connecting column 201c-1 is fixedly provided on one side of the bottom surface of the reinforcement plate 201b. Two second guide grooves 201b-1 arranged in the vertical direction are arranged in a horizontal array on the side wall of the reinforcement plate 201b. A guide column 102e is fitted in the gap in the second guide groove 201b-1. One end of the guide column 102e is fixedly provided on the side guard plate 102b, and the other ends of the two guide columns 102e are fixedly provided on the same connecting piece 102e-1. This arrangement can play a role of limiting and guiding the movement of the reinforcement plate 201b. The connection of the fixed plate 201b through the connecting column 201c-1 can further improve the stability of the cooperation between the paving plate 201 and the feeding assembly 102.

[0048] See Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a discharge port 101b is provided on the bottom surface of the receiving hopper 101 above the conveyor belt 102a for feeding materials onto the conveyor belt 102a, and material aggregation blocks 101a are symmetrically fixed on the inner walls of the receiving hopper 101 on both sides of the discharge port 101b, and the vertical cross-section of the aggregation blocks 101a in the left and right directions is a right-angled triangle. The setting of the aggregation blocks 101a can assist in gathering materials at the feed port 101b. A lower recess 101c is provided on the top surface of the front side plate of the receiving hopper 101, so that it can better cooperate with the unloading of the transport vehicle, and a guide rod 101d is fixed on the bottom surface of the receiving hopper 101 in front of the discharge port 101b. The vertical cross-section of the guide rod 101d is a right-angled trapezoid, and the inclined side of the right-angled trapezoid is set on the side close to the discharge port 101b. This setting can better transport the material discharged from the discharge port 101b to the conveyor belt 102a.

[0049] A fixing plate 102b-7 is fixedly provided on the outer side wall of the upper end of the side guard plate 102b at the receiving hopper 101, and the fixing plate 102b-7 is fixedly connected to the bottom surface of the receiving hopper 101 by bolts to achieve the matching fixation between the side guard plate 102b and the receiving hopper 101.

[0050] Furthermore, fixed blocks 102b-1 are symmetrically fixed on the outer side walls of the side guard plates 102b on both sides of the hydraulic cylinder 102c-1, and threaded mounting holes 102b-2 are arranged in a horizontal array on one side wall of the fixed block 102b-1. The threaded mounting holes 102b-2 are fixed to the operating vehicle body 300 by bolts. This arrangement can realize the matching and fixing between the feeding mechanism 100 and the operating vehicle body 300, and the operating vehicle body 300 is used for the staff to drive the device;

[0051] In actual use, the controller of the device for controlling various electrical components is arranged in the central control system of the operating vehicle body 300 to facilitate the operation of the staff. Example 2

[0052] Reference Figure 1 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 , which is the second embodiment of the present invention, is based on the previous embodiment, but is different in that this embodiment is proposed in order to achieve better paving on a wide road surface and to make paving more convenient and efficient.

[0053] Specifically, the material laying plate 201 is formed by an integrally formed humanoid plate and a rectangular plate near the feeding component 102. A side guard frame 201d is provided on the outer side of the top surface of the material laying plate 201, and a notch is provided on the side of the side guard frame 201d near the feeding component 102. A receiving plate 201a is provided on the material laying plate 201 at the notch position extending below the conveyor belt 102a. The receiving plate 201a is used to receive the material output by the conveyor belt 102a. The notch is used to transport the received mixed material to the material laying plate 201. The material laying plate 201 and the receiving plate 201a are arranged in parallel.

[0054] A human-shaped through groove 201g is provided on the paving plate 201, and a human-shaped adjustment plate 202 is provided in the gap in the human-shaped through groove 201g. The human-shaped adjustment plate 202 is used to guide the mixture for paving. The middle closed end of the human-shaped adjustment plate 202 is arranged on the side close to the material receiving plate 201a. A discharge groove 201e is provided at the inclined lower end of the paving plate 201. The discharge groove 201e is used to discharge the mixture onto the road surface to achieve paving.

[0055] A threaded matching hole 202a for spiral matching of the upper end of the bolt column 202b is provided on the middle bottom surface of the human-shaped adjustment plate 202. The lower end of the bolt column 202b is rotatably connected to the ground of the paving plate 201 through a rolling bearing. A slave conical tooth 202b-1 is fixedly provided on the bottom surface of the bolt column 202b. A main conical tooth 204 is meshed with one side of the slave conical tooth 202b-1. A rotating shaft 204a is fixedly provided at one end of the main conical tooth 204. The other end of the rotating shaft 204a is embedded in the output end of the second motor 204a-1. The second motor 204a-1 is fixedly provided on the bottom surface of the paving plate 201.

[0056] When the above-mentioned arrangement is in use, the rotation of the main conical teeth 204 can be realized through the operation of the second motor 204a-1. Because of the meshing arrangement between the main conical teeth 204 and the slave conical teeth 202b-1, the rotation of the slave conical teeth 202b-1 can be realized under the rotation of the main conical teeth 204. Because of the spiral matching arrangement of the bolt column 202b and the threaded matching hole 202a, under the action of the forward and reverse driving of the second motor 204a-1, the bolt column 202b can be reversed to realize the reciprocating motion of the humanoid adjustment plate 202 in the vertical direction.

[0057] Furthermore, the top surface of the human-shaped adjustment plate 202 is configured as a second inclined surface 202c whose height dimension gradually decreases from the middle to both sides. When this arrangement is in use, when the human-shaped adjustment plate 202 moves downward, the outermost human-shaped adjustment plate 202 loses its resistance to the mixture, and then gradually loses its resistance to the mixture as a whole. Through such a design, the mixture can be well distributed to both sides, avoiding the situation where the mixture accumulates in the middle of the road surface.

[0058] Furthermore, the pressure roller 203 is fixedly sleeved on the second rotating rod 203a, and both ends of the second rotating rod 203a are rotatably connected to the outer wall of the side guard frame 201d through rolling bearings. The setting of the pressure roller 203 can assist in compaction and leveling after the paving is completed. Example 3

[0059] Reference Figure 4 and Figure 8 , which is the third embodiment of the present invention, is based on the previous embodiment, but is different in that in order to improve the leveling effect and avoid the problem of voids in the road surface during the leveling process, and to improve the leveling and compacting effect, this embodiment is proposed.

[0060] Specifically, a horizontally arranged paving plate 201f is fixed on the bottom surface of the discharge trough 201e on one side close to the pressure roller 203. The paving plate 201f on one side close to the discharge trough 201e is arranged in an inwardly concave arc shape, and the bottom surface of the paving plate 201f at the arc position is arranged as a first inclined surface 201f-1, which can improve the flattening effect; the bottom surface of the paving plate 201f is tangent to the outer side wall of the pressure roller 203;

[0061] When the above arrangement is in use, when the mixture is discharged from the discharge trough 201e, due to the special setting of the human-shaped adjustment plate 202, the mixture on both sides of the road is slightly more than that in the middle. Through the concave arc setting of the paving plate 201f, the mixture can be gathered to the middle position of the road surface. This can achieve a leveling effect on the one hand, and fill the holes on the other hand. Example 4

[0062] This embodiment is the fourth embodiment of the present invention, which provides a construction process for an ultra-thick cement-stabilized crushed stone base, specifically comprising the following steps:

[0063] S1: The mixed material is transported to the working road surface by a transport vehicle, and the transport vehicle unloads the mixed material into the receiving hopper 101 in a walking manner in front of the paving vehicle;

[0064] S2: The height of the paving board 201 of the paving vehicle is adjusted according to the thickness of the base layer, and the feeding mechanism 100 conveys the mixed material in the hopper 101 to the paving board 201 to perform paving in the full width direction;

[0065] S3: After the paving is completed, it is compacted by a rammer to form a paving surface;

[0066] S4: Use rollers that meet the requirements of large-thickness construction to roll in the order of initial rolling, secondary rolling and final rolling. Sprinkle water for maintenance after rolling. According to the rolling requirements, the initial rolling is carried out by a 30t tire test roller at a speed of 1m / s for 2 times of uniform and stable pressure. The secondary rolling is carried out by a 26t BMW single steel wheel vibratory roller at a speed of 1m / s for 2 times of strong vibration and 4 times of weak vibration. The final rolling is carried out by a 30t tire roller + a 15t double steel wheel roller at a speed of 1m / s for 1 time each to evenly roll the surface for stabilizing the pressure and finishing.

[0067] In addition, it should be noted that the components not described in detail in this article are prior art.

[0068] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of a plurality of parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0069] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0070] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. Extra-thick cement-stabilized crushed stone base construction paving device, characterized by: include, The feeding mechanism comprises a receiving hopper and a feeding assembly located below the receiving hopper and extending to the rear side, the feeding assembly comprises a conveyor belt, side guard plates symmetrically arranged on both sides of the conveyor belt and a rectangular frame located below the conveyor belt, the inner sides of both ends of the conveyor belt are slidably sleeved with rotating rollers, the rotating rollers are fixedly sleeved on the first rotating rod, and the two ends of the first rotating rod are rotatably sleeved on the matching plate through rolling bearings, the front and rear sides of the side guard plates are vertically provided with rectangular matching grooves for matching plate clearance, and the matching plate is fixedly connected to the top surface of the rectangular frame, the front and rear plates of the rectangular frame pass through the rectangular matching grooves so that the left and right plates are located outside the side guard plates, a hydraulic cylinder is fixedly provided in the middle of a side surface of the side guard plate away from the conveyor belt in the vertical direction, and the output end of the hydraulic cylinder located below is fixedly connected to the top surface of the rectangular frame; first rack rods with free ends extending downward are symmetrically fixed on both sides of the bottom surface of the rear plate of the rectangular frame, a gear plate is meshedly arranged on one side of the first rack rod, and a rotating column fixed on one end surface of the gear plate is rotatably sleeved on the side guard plate through a rolling bearing; The paving mechanism arranged at the rear side of the feeding mechanism comprises a paving plate inclined in the vertical direction and a pressure roller arranged at the rear side of the paving plate, the end of the paving plate close to the feeding mechanism is an inclined upper end, and the top surface of the paving plate close to the end of the feeding mechanism is symmetrically fixed with second rack rods on both sides, the second rack rod is meshed with the gear plate, and the first rack rod and the second rack rod are respectively arranged on both sides of the gear plate; and, The operating vehicle body is arranged outside the material conveying assembly between the material receiving hopper and the paving mechanism.

2. The super-thick cement-stabilized crushed stone base construction paving device according to claim 1, characterized in that: One end of the first rotating rod located at the front side extends to the outside of the matching plate and is embedded in the output end of the first motor, and the first motor is fixedly connected to the rectangular frame.

3. The super-thick cement-stabilized crushed stone base construction paving device according to claim 2, characterized in that: Limiting strips are symmetrically fixed on both sides of the matching plate, and limiting grooves for clearance matching of the limiting strips are opened on the side walls of the rectangular matching groove in the vertical direction.

4. The super-thick cement-stabilized crushed stone base construction paving device as claimed in claim 3, characterized in that: T-shaped columns are slidably sleeved on the rectangular frames on both sides of the hydraulic cylinder, and the lower ends of the two T-shaped columns are fixedly connected to the same positioning plate, and the positioning plate is fixedly connected to the outer side wall of the side guard plate.

5. The super-thick cement-stabilized crushed stone base construction paving device according to claim 1, characterized in that: A discharge port is provided on the bottom surface of the receiving hopper above the conveyor belt, and material gathering blocks are symmetrically fixed on the inner walls of the receiving hopper on both sides of the discharge port, and the vertical section of the material gathering blocks in the left and right directions is a right triangle, and a lower recess is provided on the top surface of the front side plate of the receiving hopper, and a material guide rod is fixed on the bottom surface of the receiving hopper in front of the discharge port, and the vertical section of the material guide rod is a right trapezoid, and the inclined side of the right trapezoid is arranged on the side close to the discharge port; A fixing plate is fixedly provided on the outer side wall of the upper end of the side guard plate at the receiving hopper position, and the fixing plate is fixedly connected to the bottom surface of the receiving hopper by bolts; The outer side walls of the side guard plates on both sides of the hydraulic cylinder are symmetrically fixed with fixing blocks, and one side wall of the fixing block is provided with threaded mounting holes in an array in a horizontal direction, and the threaded mounting holes are fixed to the operating vehicle body by bolts.

6. The super-thick cement-stabilized crushed stone base construction paving device according to claim 1, characterized in that: A connecting column is fixedly arranged on the top surface of the second rack rod, and the upper end of the connecting column is fixedly arranged on one side of the bottom surface of the reinforcing plate. Two second guide grooves arranged in the vertical direction are arranged in an array in the horizontal direction on the side wall of the reinforcing plate. A guide column is gap-fitted in the second guide groove. One end of the guide column is fixedly arranged on the side guard plate, and the other ends of the two guide columns are fixedly arranged on the same connecting piece. A convex block is fixedly provided on one side wall of the upper end of the second rack rod, and a first guide groove for clearance fit of the convex block is provided on one side surface of the side guard plate in the vertical direction.

7. The super-thick cement-stabilized crushed stone base construction paving device according to claim 4, 5 or 6, characterized in that: The material laying plate is formed of a human-shaped plate and a rectangular plate integrally formed on one side of the material feeding component. A side guard frame is provided on the outer side of the top surface of the material laying plate, and a notch is provided on the side of the side guard frame close to the material feeding component. A material receiving plate is provided on the material laying plate at the notch position extending to the bottom of the conveyor belt. The material laying plate is provided with a human-shaped through-groove, the gap in the human-shaped through-groove is matched with a human-shaped adjustment plate, the middle closed end of the human-shaped adjustment plate is arranged on the side close to the material receiving plate, and the inclined lower end of the material laying plate is provided with a discharge groove; A threaded mating hole for spiral mating of the upper end of the bolt column is provided on the middle bottom surface of the human-shaped adjustment plate, and the lower end of the bolt column is rotatably connected to the floor of the paving board through a rolling bearing, and a slave conical tooth is fixedly provided on the bottom surface of the bolt column, and a main conical tooth is meshed on one side of the slave conical tooth, and a rotating shaft is fixedly provided at one end of the main conical tooth, and the other end of the rotating shaft is embedded in the output end of the second motor, and the second motor is fixedly provided on the bottom surface of the paving board; The top surface of the human-shaped adjustment plate is configured as a second inclined surface whose height gradually decreases from the middle to both sides; The pressure roller is fixedly sleeved on the second rotating rod, and both ends of the second rotating rod are rotatably connected to the outer side wall of the side guard frame through rolling bearings.

8. The super-thick cement-stabilized crushed stone base construction paving device according to claim 7, characterized in that: A horizontally arranged paving plate is fixedly arranged on the bottom surface of the discharge trough on the side close to the pressure roller, and the paving plate is arranged in a concave arc shape on the side close to the discharge trough, and the bottom surface of the paving plate at the arc position is arranged as a first inclined surface; The bottom surface of the paving plate is tangent to the outer side wall of the pressure roller.

9. The construction process of ultra-thick cement-stabilized crushed stone base is characterized by: The super-thick cement-stabilized crushed stone base construction paving device according to any one of claims 1 to 8 is constructed according to the following steps; S1: The mixed material is transported to the working road surface by a transport vehicle, and the transport vehicle unloads the mixed material into the receiving hopper in a walking manner in front of the paving vehicle; S2: The height of the paving board of the paving vehicle is adjusted according to the thickness of the base layer, and the feeding mechanism conveys the mixed material in the receiving hopper to the paving board for full-width paving; S3: After the paving is completed, it is compacted by a rammer to form a paving surface; S4: Use a roller that meets the requirements of large-thickness construction to roll the road in the order of initial rolling, repeated rolling, and final rolling. Sprinkle water for maintenance after rolling is completed.

10. The ultra-thick cement-stabilized crushed stone base construction process according to claim 9, characterized in that: According to the compaction requirements, the initial compaction uses a 30t tire test roller to evenly compact the surface twice at a speed of 1m / s. The secondary compaction uses a 26t BMW single steel wheel vibratory roller to vigorously vibrate the surface twice and weakly vibrate the surface four times at a speed of 1m / s. The final compaction uses a 30t tire roller + a 15t double steel wheel roller to evenly compact the surface once each at a speed of 1m / s to stabilize the surface and finish the compaction.

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