A material receiving device, a paver and a paving method

Abstract

This invention discloses a material receiving device, a paver, and a paving operation method. The device includes a hopper, a front-tilting hopper, a conveying mechanism, and a detection mechanism. The front-tilting hopper is installed inside the hopper, and a hydraulic cylinder is installed between the front-tilting hopper and the hopper. Two conveying screws are installed opposite each other inside the hopper. A motor is installed inside the hopper and connected to the conveying screws via a chain. A conveyor belt is installed on the middle and rear side of the hopper and is driven by a conveyor belt motor. The detection mechanism, hydraulic cylinder, motor, and conveyor belt motor are respectively connected to the paver's ECU. The detection mechanism is used to detect material level information and rotation speed information. The paver ECU uses the material level information and rotation speed information to drive the hydraulic cylinder to adjust the rotation angle of the front-tilting hopper inside the hopper, control the motor to adjust the rotation speed of the conveying screws, and control the conveyor belt motor to adjust the rotation speed of the conveyor belt. This invention has a simple structure, is economical and practical, can perform paving operations in narrow channels, ensures automatic material receiving by the paver, and is applicable to all paving conditions.

Description

Technical Field

[0001] This invention relates to a material receiving device, a paver, and a paving operation method, belonging to the technical field of road construction machinery. Background Technology

[0002] Construction site pavers are used to receive, convey, distribute, shape, and partially compact asphalt materials. The paver receives paving material heated to a suitable temperature, allowing it to flow and collect in a receiving hopper at the front of the paver. A parallel slat conveyor or other type of conveying mechanism located at the bottom of the hopper transfers the paving material from the hopper to the rear of the paver. The asphalt material conveyed from the hopper is distributed along a preset conveying direction by two opposing spiral or spreading conveyors. A floating screed shapes and compacts the paving material on the predetermined road surface.

[0003] Currently, the requirements for the quality of various road paving are becoming increasingly stringent, and paver users are also placing stricter demands on the construction environment and safety. Mine roadways are typically 3500-5500mm wide. After excavation is completed and the roadway walls are supported with wire mesh and shotcrete, the road surface needs to be paved to facilitate rapid traffic flow. However, as the internal stress of the roadway is gradually released, the roadway width will deform to some extent. Especially due to the special explosion-proof requirements underground, current mine roadway paving largely relies on manual processes for material loading, distribution, vibration, and leveling. This results in high labor intensity and safety for workers, low paving efficiency, and increased labor and material costs. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a material receiving device, a paver, and a paving operation method, which ensures that the paver can automatically receive materials conveniently, quickly, and efficiently during paving operations in mines, and is applicable to all paving conditions.

[0005] To achieve the above objectives, the present invention employs a receiving device, comprising a hopper, and further comprising:

[0006] A front-tilting hopper is installed inside a hopper, and a hydraulic cylinder is installed between the front-tilting hopper and the hopper. The hydraulic cylinder drives the front-tilting hopper to rotate inside the hopper.

[0007] The material conveying mechanism includes a material conveying screw, a motor, and a material conveying belt. Two material conveying screws are installed opposite each other inside the hopper. The motor is installed inside the hopper and is connected to the material conveying screws via a chain. The material conveying belt is installed in the middle and rear of the hopper and is driven by a material conveying belt motor installed at the rear of the machine.

[0008] The detection mechanism, along with the hydraulic cylinder, motor, and conveyor belt motor, is connected to the paver ECU. The detection mechanism is used to detect the material level information in the hopper and the rotational speed information of the conveyor auger and conveyor belt. The paver ECU uses the material level information and rotational speed information transmitted by the detection mechanism to drive the hydraulic cylinder to adjust the rotation angle of the front tipping hopper in the hopper, control the motor to adjust the rotational speed of the conveyor auger, and control the conveyor belt motor to adjust the rotational speed of the conveyor belt.

[0009] As an improvement, an inner plate for protecting the motor is installed inside the hopper, and a side guard plate for protecting the chain is installed on the outside of the hopper.

[0010] As an improvement, a material level sensor is installed above the hopper, which is used to detect the paving material level information in the hopper and feed it back to the paver ECU.

[0011] As an improvement, the conveying auger and conveying belt are each equipped with a speed sensor, which feeds back the real-time rotational speed information of the conveying auger and conveying belt to the paver ECU.

[0012] As an improvement, the motor and conveyor belt motor have forward and reverse rotation functions.

[0013] In addition, the present invention also provides a paver on which the aforementioned receiving device is installed.

[0014] Finally, the present invention also provides a paving operation method for the paver. When the underground paving operation begins, the material truck pours the paving material into the hopper. The material level sensor detects the paving material level information in the hopper and feeds back the detection information to the paver ECU. The motor drives the conveying screw to work at a preset speed through the chain and performs feedback control adjustment according to the following formula.

[0015]

[0016] In the formula: D is the diameter of the helical blade, in meters; t is the pitch of the helical blade, in meters; k1 is the paving material filling coefficient (0.8~1); γ is the paving material density, in t / m³. 3 Q represents the single-sided screw production rate, in t / h; H represents the screw length, in meters; h represents the trough width, in meters.

[0017] At the same time, the hydraulic cylinder controls the forward tilting hopper to smoothly rotate to the set angle, so that the paving material is collected onto the conveyor belt and transported to the paving material trough. The conveyor belt operates at a set speed V and is adjusted by feedback control according to the following formula.

[0018]

[0019] In the formula: Qs is the overall productivity of the paver, in t / h; B is the width of the material conveying channel, in m; L is the height of the material conveying channel, in m; ρ is the density of the paver material, in t / m³. 3 K is the effective utilization coefficient of the material conveying channel (0.8~0.9).

[0020] As an improvement, when the amount of paving material in the hopper decreases, based on the detection feedback from the material level sensor, the paver ECU controls the speed of the conveyor auger and conveyor belt to decrease, and the hydraulic cylinder lifts and tilts the hopper forward.

[0021] As an improvement, when the paving material decreases to a critical value, based on the detection feedback from the material level sensor, the paver ECU controls the speed of the conveying auger to decrease to the critical value, the hydraulic cylinder retracts to the initial state, the machine stops moving forward, and the loader pours the paving material back into the hopper.

[0022] Compared with existing technologies, the material receiving device of this invention has a simple structure and economical and practical function. It enables pavers to perform paving operations in narrow channels, ensuring convenient, fast, and efficient automatic material receiving, and is applicable to all paving conditions. This material receiving device ensures personnel safety, saves labor costs, guarantees road construction quality, improves road surface service life and construction efficiency, and indirectly increases customer profits. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0025] Figure 3 This is a top view of the structure of the present invention;

[0026] Figure 4 This is a schematic diagram illustrating the control principle of the present invention;

[0027] In the diagram: 1. Hopper, 2. Front-tilting hopper, 3. Hopper inner plate, 4. Hopper side guard plate, 5. Hydraulic cylinder, 6. Conveying screw, 7. Motor, 8. Chain, 9. Material level sensor, 10. Conveying belt. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below. However, it should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of the invention.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, a receiving device includes a hopper 1, a forward-tilting hopper 2, a hydraulic cylinder 5, a conveying screw 6, a motor 7, a chain 8, a conveying belt 10, a conveying belt motor, and a detection mechanism.

[0031] The forward tilting hopper 2 is installed inside the hopper 1, and a hydraulic cylinder 5 is installed between the forward tilting hopper 2 and the hopper 1. The hydraulic cylinder 5 drives the forward tilting hopper 2 to rotate inside the hopper 1. The hydraulic cylinder 5 can adjust the rotation angle of the forward tilting hopper 2, thereby realizing the collection of paving material.

[0032] Two conveying screws 6 are installed opposite each other inside the hopper 1, and a motor 7 is installed inside the hopper 1. The motor 7 is connected to the conveying screws 6 via a chain 8.

[0033] The conveyor belt 10 is installed on the middle and rear side of the hopper 1. The conveyor belt chain or transmission belt is driven by the conveyor belt motor installed on the rear side of the paver, which in turn drives the conveyor belt drive shaft to rotate, thereby driving the conveyor belt 10 to rotate.

[0034] The detection mechanism, hydraulic cylinder 5, motor 7, and conveyor belt motor are respectively connected to the paver ECU. The detection mechanism consists of multiple detection sensors. The detection mechanism is used to detect the material level information in the hopper 1, the rotation speed information of the conveyor auger 6 and the conveyor belt 10. The paver ECU drives the hydraulic cylinder 5 to adjust the rotation angle of the forward tilting hopper 2 in the hopper 1, controls the motor 7 to adjust the rotation speed of the conveyor auger 6, and controls the conveyor belt motor to adjust the rotation speed of the conveyor belt 10 through the material level information and rotation speed information transmitted by the detection mechanism.

[0035] As an improvement to the embodiment, such as Figure 1 As shown, the hopper 1 is equipped with an inner plate 3 for protecting the motor 7, and the outer side of the hopper 1 is equipped with a side guard plate 4 for protecting the chain 8, which improves the safety of the components.

[0036] As an improvement to the embodiment, such as Figure 3 As shown, a material level sensor 9 is installed above the hopper 1. The material level sensor 9 is used to detect the paving material level information in the hopper 1 and feed it back to the paver ECU. Speed ​​sensors are installed on the conveying auger 6 and the conveying belt 10, respectively, and the speed sensors feed back the real-time rotational speed information of the conveying auger 6 and the conveying belt 10 to the paver ECU.

[0037] As an improvement to the embodiment, the motor 7 can achieve reciprocating rotation, thereby realizing the forward and reverse rotation of the conveyor screw 6. The conveyor belt motor can achieve reciprocating rotation, thereby realizing the forward and reverse rotation of the conveyor belt 10.

[0038] In addition, the present invention also provides a paver on which the aforementioned receiving device is installed.

[0039] like Figures 1 to 4 As shown, when the underground paving operation begins, the loader pours the paving material into the hopper 1. The material level sensor 9 detects the paving material level information and feeds the detection information back to the paver ECU for processing. The actuator motor 7 drives the conveying screw 6 through the chain 8 to work at a set speed n. The feedback control is adjusted according to the formula obtained from the following experiment to ensure that the paving material completely covers the conveying screw 6, which plays a secondary mixing role for the paving material, thereby reducing the segregation of the paving material and greatly improving the paving quality.

[0040]

[0041] In the formula: D is the diameter of the helical blade, in meters; t is the pitch of the helical blade, in meters; k1 is the paving material filling coefficient (0.8~1); γ is the paving material density, in t / m³. 3 Q represents the single-sided screw production rate in t / h; H represents the screw length in m; and h represents the trough width in m.

[0042] At the same time, the hydraulic cylinder 5 controls the forward tilting hopper 2 to smoothly tilt to the set angle, so that the paving material is collected into the conveyor belt 10 and transported to the paving material trough;

[0043] The conveyor belt 10 operates at a set rotational speed V and is adjusted by feedback control according to the formula obtained from the following test to ensure that the paving material is evenly distributed to the paving trough, thereby achieving continuous stability of paving, reducing the undulation of the paving material, and greatly improving the paving quality.

[0044]

[0045] In the formula: Qs is the overall productivity of the paver, in t / h; B is the width of the material conveying channel, in m; L is the height of the material conveying channel, in m; ρ is the density of the paver material, in t / m³. 3 K is the effective utilization coefficient of the material conveying channel (0.8~0.9).

[0046] When the amount of paving material in hopper 1 decreases, based on the detection feedback from the material level sensor 9, the paver ECU controls the speed of the conveying auger 6 and the conveying belt 10 to decrease, and the hydraulic cylinder 5 to lift and tilt the hopper 2.

[0047] When the paving material decreases to a critical value, the speed of the conveying screw 6 also decreases to a critical value, the hydraulic cylinder 5 retracts to its initial state, the machine stops moving forward, until the loader pours the paving material back into the hopper 1.

[0048] The material receiving device of this invention has a simple structure and economical and practical function. It enables pavers to perform paving operations in narrow passages, ensuring convenient, fast, and efficient automatic material receiving, and is applicable to all paving conditions. This material receiving device ensures personnel safety, saves labor costs, guarantees road construction quality, improves road surface service life and construction efficiency, and indirectly increases customer profits.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A receiving device, comprising a hopper (1), characterized in that, Also includes: A front-tilting hopper (2) is installed inside a hopper (1). A hydraulic cylinder (5) is installed between the front-tilting hopper (2) and the hopper (1). The hydraulic cylinder (5) drives the front-tilting hopper (2) to rotate inside the hopper (1). The material conveying mechanism includes a material conveying screw (6), a motor (7) and a material conveying belt (10). The two material conveying screws (6) are installed opposite each other in the hopper (1). The motor (7) is installed inside the hopper (1). The motor (7) is connected to the material conveying screws (6) through a chain (8). The material conveying belt (10) is installed in the middle and rear side of the hopper (1). The material conveying belt (10) is driven by a material conveying belt motor installed in the rear side of the machine. The detection mechanism, the oil cylinder (5), the motor (7), and the conveyor belt motor are respectively connected to the paver ECU. The detection mechanism is used to detect the material level information in the hopper (1), and to detect the rotation speed information of the conveyor auger (6) and the conveyor belt (10). The paver ECU drives the oil cylinder (5) to adjust the rotation angle of the forward tilting hopper (2) in the hopper (1), controls the motor (7) to adjust the rotation speed of the conveyor auger (6), and controls the conveyor belt motor to adjust the rotation speed of the conveyor belt (10) through the material level information and rotation speed information transmitted by the detection mechanism. A material level sensor (9) is installed above the hopper (1). The material level sensor (9) is used to detect the paving material level information in the hopper (1) and feed it back to the paver ECU. Speed ​​sensors are installed on the conveying auger (6) and the conveying belt (10). The speed sensors feed back the real-time rotation speed information of the conveying auger (6) and the conveying belt (10) to the paver ECU. The motor (7) and the conveying belt motor have forward and reverse rotation functions.

2. The receiving device according to claim 1, characterized in that, The hopper (1) is equipped with an inner plate (3) for protecting the motor (7), and the outer side of the hopper (1) is equipped with a side guard plate (4) for protecting the chain (8).

3. A paver, characterized in that, The paver is equipped with the material receiving device as described in any one of claims 1-2.

4. A paving operation method for the paver according to claim 3, characterized in that, When the underground paving operation begins, the material truck pours the paving material into the hopper (1). The material level sensor (9) detects the paving material level information in the hopper (1) and feeds the detection information back to the paver ECU. The motor (7) drives the conveying screw (6) to work at a preset speed through the chain (8) and performs feedback control adjustment according to the following formula. In the formula: D is the diameter of the helical blade, in meters; t is the pitch of the helical blade, in meters; k1 is the paving material filling coefficient (0.8~1); γ is the paving material density, in t / m³. 3 Q represents the single-sided screw production rate, in t / h; H represents the screw length, in meters; h represents the trough width, in meters. At the same time, the hydraulic cylinder (5) controls the forward tilting hopper (2) to rotate smoothly to the set angle, so that the paving material is collected onto the conveyor belt (10) and conveyed to the paving material trough. The conveyor belt (10) operates at a set speed V and is adjusted by feedback control according to the following formula. In the formula: Qs is the overall productivity of the paver, in t / h; B is the width of the material conveying channel, in m; L is the height of the material conveying channel, in m; ρ is the density of the paving material, in t / m³. 3 K is the effective utilization coefficient of the material conveying channel (0.8~0.9).

5. The paving operation method of a paver according to claim 4, characterized in that, When the paving material in the hopper (1) decreases, according to the detection feedback of the material level sensor (9), the paver ECU controls the speed of the conveying auger (6) and the conveying belt (10) to decrease, and the hydraulic cylinder (5) lifts the front tipping hopper (2).

6. The paving operation method of a paver according to claim 5, characterized in that, When the paving material decreases to the critical value, according to the detection feedback of the material level sensor (9), the paver ECU controls the speed of the conveying auger (6) to decrease to the critical value, the cylinder (5) retracts to the initial state, the machine stops moving forward, until the loader pours the paving material back into the hopper (1).

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