Cement paste spreader for cement stable layer

Abstract

The utility model discloses a cement paste spreader for a cement stable layer, which comprises a concrete mixer truck, a chute discharge port of the concrete mixer truck is connected with a cement paste transition bin through a support, the cement paste transition bin is obliquely mounted in a way that one side is high and the other side is low, the top of the cement paste transition bin is open, and the top of the cement paste transition bin is open. The cement paste transition bins are connected to a chute discharging opening of the concrete mixer in a covering mode, the bottom of the cement paste transition bin on the lower side is connected with a guiding and conveying pipe, one end of the guiding and conveying pipe is communicated with the cement paste transition bin, and the other end of the guiding and conveying pipe is connected with a paste distributing pipe arranged in the width direction of the concrete mixer. A plurality of spray heads used for spraying slurry towards the rear ground are installed on the slurry distributing pipe, and a cement slurry pump is installed on the guiding and conveying pipe. The cement paste spreader of the cement stable layer is formed by adding the spreading mechanism on the concrete mixer truck, the equipment investment cost is low, the construction efficiency can be improved, and meanwhile the labor cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of road engineering construction equipment, in particular to a cement slurry spreader for a water-stabilizing layer. Background Art

[0002] Water-stabilizing layer is the abbreviation of cement-stabilized gravel layer, which is made of cement-consolidated graded gravel, compacted and cured. The mix ratio of water-stabilizing layer should be tested in the laboratory in advance to determine the cement dosage and the ratio of coarse and fine aggregates, and the maximum dry density. If the amount is large, a water-stabilizing mixing station can be used for mixing. After construction, cement slurry needs to be spread for paving. Traditional cement slurry spreading is done manually, which cannot guarantee the uniformity of spreading and also requires a lot of time and labor. In order to improve the spreading efficiency and uniformity, people have developed cement slurry spreaders, which are quoted as follows:

[0003] 1. Chinese Patent: An Intelligent Spreader of Cement Slurry between Water-stable Gravel Layers, Application Number: 202022111346.2, Application Date: 2020.09.23, Abstract: This application relates to an intelligent spreader of cement slurry between water-stable gravel layers, belonging to the field of road construction machinery, which includes a vehicle body and a storage bin arranged on the vehicle body, a material distribution bin connected to the storage bin is arranged at the rear of the vehicle body, a material distribution bin is arranged on the bottom surface of the material distribution bin, a support frame is arranged on the vehicle body, the material distribution bin is slidably connected to the support frame in a vertical direction, and a lifting mechanism for driving the material distribution bin to slide is arranged on the support frame. This application has the effect of reducing dust when spreading cement.

[0004] 2. Chinese Patent: Cement Spreader, Application No.: 201120462177.5, Application Date: 2011.11.18, Abstract: The utility model discloses a cement spreader, including a truck and a cement spreading mechanism installed on the truck, a hydraulic transmission system and a cement spreading control system. The cement spreading mechanism includes a chassis, a spiral feeding mechanism installed on the chassis, a powder bin installed above the spiral feeding mechanism and a spiral material distribution mechanism connected to the rear of the spiral feeding mechanism. A discharge pipe is arranged at the rear of the powder bin, and a discharge port is arranged at the rear obliquely lower part of the spiral material distribution mechanism. The hydraulic transmission system is connected with the spiral feeding mechanism and the spiral material distribution mechanism. The cement spreading control system includes a detection unit for real-time detection of the operating state of the spreader, a control unit connected to the detection unit and a display unit connected to the control unit. The utility model has a compact structure, a reasonable design, uniform cement spreading, high production efficiency, low environmental pollution, a high degree of intelligence, high working reliability, shortens the construction period, protects the environment, and has huge social benefits.

[0005] Through application investigation and research, it was found that the cement spreader disclosed in the above-mentioned document is a special equipment. After spreading, the main body of the equipment is idle for a long time, the equipment utilization rate is not high, and the investment cost is high. Summary of the invention

[0006] The utility model aims to provide a cement slurry spreader for a water-stable layer. The cement slurry spreader for the water-stable layer is formed by adding a spreading mechanism to a concrete mixer truck. The equipment investment cost is low, and the construction efficiency can be improved while reducing labor costs.

[0007] In order to achieve the purpose of the utility model, the technical solution adopted is:

[0008] A cement slurry spreader for a water-stabilizing layer comprises a concrete mixer truck, wherein a chute discharge port of the concrete mixer truck is connected to a cement slurry transition bin through a bracket, the cement slurry transition bin is installed with one side higher and the other side lower, the top of the cement slurry transition bin is open, a cement slurry transition bin cover is connected to the chute discharge port of the concrete mixer truck, the cement slurry discharged from the concrete mixer truck enters the cement slurry transition bin, a guide pipe is connected to the bottom of the cement slurry transition bin on the lower side, one end of the guide pipe is communicated with the cement slurry transition bin, and the other end of the guide pipe is connected to a slurry distribution pipe arranged along the width direction of the concrete mixer truck, a plurality of nozzles for spraying slurry toward the rear ground are installed on the slurry distribution pipe, and a cement slurry pump is installed on the guide pipe.

[0009] Further preferably, the connection end between the guide pipe and the cement slurry transition bin is equipped with a filter screen, which can filter sand and gravel to ensure that the nozzle is not blocked and can be removed and cleaned regularly. A detachable filter screen bag can also be installed in the middle of the chute discharge port of the concrete mixer truck to filter sand and gravel to ensure that the nozzle is not blocked and can be removed and cleaned regularly.

[0010] Further preferably, a switch valve is installed on the guide pipe, and the switch valve is installed on the guide pipe between the cement slurry pump and the slurry distribution pipe.

[0011] Further preferably, the switch valve is an electromagnetic switch valve, which facilitates automatic control.

[0012] The cement slurry spreader for the water-stabilizing layer is composed of a concrete mixer truck with a spreading mechanism added. The equipment investment cost is low. After spreading, the spreading mechanism is disassembled, and the concrete mixer truck can continue to be used for concrete transportation without being idle, and the equipment utilization rate is high. The cement slurry used can be accurately produced by the concrete mixing station and then placed in the concrete mixer truck, replacing the manual delivery method, avoiding the disadvantages of cement and water that cannot be measured and delivered, and eliminating the unsafe behavior of people standing at a height to deliver cement. While improving construction efficiency, it also reduces the labor cost of the manual delivery method. In addition, after being delivered to the concrete mixer truck, the tank truck has its own stirring function to prevent the segregation of cement slurry and ensure the quality of cement slurry. The speed of the cement slurry pump and the opening size of the switch valve can be controlled by servo to achieve the control of the amount of cement slurry spread. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the cement slurry spreader for the water-stabilizing layer;

[0014] Figure 2 for Figure 1 Schematic diagram of top view;

[0015] Figure 3 for Figure 1 A right side schematic diagram of

[0016] The names corresponding to the numbers in the figure are:

[0017] 1. Concrete mixer truck; 2. Cement slurry transition bin; 3. Cement slurry pump; 4. Bracket; 5. Guide pipe; 6. Switch valve; 7. Slurry distribution pipe; 8. Nozzle; 9. Filter. DETAILED DESCRIPTION

[0018] In order to make the technical solution and advantages of the present application clearer, the technical solution is clearly and completely described below in conjunction with embodiments. Example

[0019] A cement slurry spreader for a water-stabilized layer comprises a concrete mixer truck 1, wherein a chute discharge port of the concrete mixer truck 1 is connected to a cement slurry transition bin 2 through a bracket 4, the cement slurry transition bin 2 is tiltedly installed with one side higher than the other side, the top of the cement slurry transition bin 2 is open, the cement slurry transition bin 2 is covered and connected to the chute discharge port of the concrete mixer truck 1, a guide pipe 5 is connected to the bottom of the cement slurry transition bin 2 on the lower side, one end of the guide pipe 5 is communicated with the cement slurry transition bin 2, and the other end of the guide pipe 5 is connected to a slurry distribution pipe 7 arranged along the width direction of the concrete mixer truck 1, a plurality of nozzles 8 for spraying slurry toward the rear ground are installed on the slurry distribution pipe 7, and a cement slurry pump 3 is installed on the guide pipe 5.

[0020] A filter screen 9 is installed at the connection end between the guide pipe 5 and the cement slurry transition bin 2 .

[0021] The guide pipe 5 is provided with a switch valve 6 , and the switch valve 6 is installed on the guide pipe 5 between the cement slurry pump 3 and the slurry distribution pipe 7 .

[0022] The working principle of the cement slurry spreader for this water-stabilizing layer is basically as follows: after the cement slurry is produced by the mixing station, it is unloaded into the concrete mixer truck, which is then transported to the construction site. The concrete mixer truck unloads the material into the cement slurry transition bin. The cement slurry is pumped through the cement slurry pump and the guide pipe by the spray pump, and then opened by the switch valve. Finally, it is sprayed through the slurry distribution pipe and the nozzle. The sprayed cement slurry covers the ground behind the concrete mixer truck.

[0023] The above description is not a limitation of the present application, and the present application is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present application should fall within the scope of protection of the present application.

Claims

1. A cement slurry spreader for a water-stabilized layer, comprising a concrete mixer truck (1), characterized in that: The chute discharge port of the concrete mixer truck (1) is connected to a cement slurry transition bin (2) via a bracket (4); the cement slurry transition bin (2) is installed in an inclined manner with one side higher and the other side lower; the top of the cement slurry transition bin (2) is open; the hood of the cement slurry transition bin (2) is connected to the chute discharge port of the concrete mixer truck (1); the bottom of the cement slurry transition bin (2) on the lower side is connected to a guide pipe (5); one end of the guide pipe (5) is in communication with the cement slurry transition bin (2); the other end of the guide pipe (5) is connected to a slurry distribution pipe (7) arranged along the width direction of the concrete mixer truck (1); a plurality of nozzles (8) for spraying slurry toward the rear ground are installed on the slurry distribution pipe (7); and a cement slurry pump (3) is installed on the guide pipe (5).

2. The cement slurry spreader for the water-stabilizing layer according to claim 1, characterized in that: A filter screen (9) is installed at the connection end between the guide pipe (5) and the cement slurry transition bin (2).

3. The cement slurry spreader for the water-stabilizing layer according to claim 1 or 2, characterized in that: The guide pipe (5) is provided with an on-off valve (6), and the on-off valve (6) is installed on the guide pipe (5) between the cement slurry pump (3) and the slurry distribution pipe (7).

4. The cement slurry spreader for the water-stabilizing layer according to claim 3, characterized in that: The switch valve (6) is an electromagnetic switch valve.

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