Automatic charging system of asphalt mixing station

Abstract

The utility model discloses an automatic charging system of an asphalt mixing station, which comprises a vehicle conveying device used for placing a charging vehicle and conveying the charging vehicle to a specified position; the positioning device is used for positioning the position of the loading vehicle placed on the vehicle conveying device; at least part of the structure of the loading mechanism is located above the vehicle conveying device, and the loading mechanism is used for loading materials into a compartment of the loading vehicle placed on the vehicle conveying device; the carriage material detection device is used for detecting the state of materials loaded in the carriage of the loading vehicle placed on the vehicle conveying device; the compartment heating device is used for heating the compartment of the charging vehicle placed on the vehicle conveying device by using high-temperature hot air discharged from the mixing station; and the controller is used for receiving the detection signal and sending out a control signal. According to the utility model, automatic loading can be realized, and the thermal insulation performance of materials loaded in the vehicle is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of asphalt mixing station equipment, in particular to an automatic charging system for an asphalt mixing station. Background Art

[0002] Asphalt mixing plant is a device used to produce asphalt mixture. The asphalt mixture produced by the asphalt mixing plant is loaded into vehicles, which are then transported to construction sites such as roads and bridges.

[0003] In the prior art, when the asphalt mixture of the asphalt mixing station is loaded into the vehicle, the vehicle driver, under the command of the on-site loading personnel, parks the vehicle under the loading mechanism of the finished product bin of the asphalt mixing station, and the loading personnel operates the control switch to open the loading mechanism, and the asphalt mixture falls from the loading mechanism into the vehicle compartment. In order to ensure the uniformity of the loading of the asphalt mixture during the loading process, to ensure that the material particles loaded into the vehicle are uniform and not segregated, and to make full use of the compartment space, the vehicle position needs to be moved many times during the vehicle loading process. Therefore, the loading personnel and the driver need to cooperate on site during the loading process. Moreover, since the loading personnel are far away from the loading vehicle, the error caused by visually observing the vehicle position is large. In the process of directing the vehicle to move, it is easy for the vehicle parking position to deviate, resulting in material spillage, material waste and site pollution, and even damage to the vehicle insulation tarpaulin, causing vehicle loss. Therefore, the existing loading method not only increases the personnel input and the loss of materials and vehicles, but also increases the safety risk of loading.

[0004] On the other hand, due to the requirements of asphalt mixture construction, the temperature requirements of the mixed mixture from production, transportation to paving are relatively strict. During the loading and transportation of the vehicle, since the compartment is at room temperature, the materials near the compartment wall will cool down seriously. The thermal insulation tarpaulin alone cannot achieve the required thermal insulation effect, resulting in the temperature of the materials delivered to the construction site by the vehicle not meeting the standard, affecting the construction quality. Summary of the invention

[0005] The utility model aims to provide an automatic loading system for an asphalt mixing station, which can not only realize automatic loading, but also improve the thermal insulation performance of the materials loaded in the vehicle to meet the temperature requirements of the materials.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An automatic loading system for an asphalt mixing station, comprising:

[0008] A vehicle conveying device, used for placing a loading vehicle and conveying the loading vehicle to a designated location;

[0009] a positioning device for locating the position of the loading vehicle placed on the vehicle conveying device;

[0010] a loading mechanism, at least part of which is located above the vehicle conveyor, for loading materials into a compartment of the loading vehicle placed on the vehicle conveyor;

[0011] a carriage material detection device for detecting the state of the material loaded in the carriage of the loading vehicle placed on the vehicle conveying device;

[0012] A compartment heating device, used to heat the compartment of the loading vehicle placed on the vehicle conveying device by using the high-temperature hot air discharged from the mixing station;

[0013] The controller is used to receive the positioning signal of the positioning device and the detection signal of the carriage material detection device, and to send control signals for controlling the vehicle conveying device, the loading mechanism and the carriage heating device.

[0014] In some embodiments of the present application, the vehicle transmission device includes:

[0015] A first conveying device, located in the preheating area, for conveying the charging vehicle to a designated preheating position;

[0016] a second conveying device, located in the loading area, for conveying the loading vehicle from the first conveying device to a designated loading location;

[0017] The third conveying device is located in the removal area and is used to convey the loading vehicle from the second conveying device to a designated vehicle transfer position.

[0018] In some embodiments of the present application, the positioning device includes:

[0019] A first positioning sensor group, which is arranged on the first conveying device and / or arranged at a position close to the first conveying device;

[0020] A second positioning sensor group, which is arranged on the second conveying device and / or arranged at a position close to the second conveying device;

[0021] A third positioning sensor group is arranged on the third conveying device and / or at a position close to the third conveying device.

[0022] In some embodiments of the present application, the loading mechanism includes:

[0023] A loading bin is used to store the mixed asphalt mixture and has an outlet;

[0024] A discharge hopper, which is located above the vehicle conveying device, one end of which is connected to the loading bin, and the other end of which has a discharge port facing the vehicle conveying device;

[0025] A controllable charging door is arranged at the outlet of the charging bin or the discharge outlet of the discharge hopper and is connected to the controller to be opened or closed according to a control signal sent by the controller.

[0026] In some embodiments of the present application, the carriage material detection device includes:

[0027] A camera, which is located above the vehicle conveying device and close to the loading mechanism, is connected to the controller and is used to obtain an image detection signal of the material loaded in the compartment of the loading vehicle and transmit it to the controller;

[0028] A weighing mechanism is located below the vehicle conveying device and at a position corresponding to the camera. The weighing mechanism is connected to the controller and is used to obtain a weight detection signal of the material loaded in the compartment of the loading vehicle and transmit the weight detection signal to the controller.

[0029] In some embodiments of the present application, the vehicle compartment heating device includes:

[0030] A drying device connected to the exhaust pipe of the asphalt mixing plant and used for drying the high-temperature gas from the exhaust pipe;

[0031] The blowing device is arranged at a position close to the vehicle conveying device and connected to the drying device, and is used for blowing the high-temperature gas dried by the drying device toward the compartment wall of the loading vehicle placed on the vehicle conveying device.

[0032] In some embodiments of the present application, the drying device is a cold dryer or a dryer; the blowing device is a blower.

[0033] Compared with the prior art, the advantages and positive effects of the utility model are as follows: the automatic loading system of the asphalt mixing station provided by the utility model is provided with a vehicle conveying device, a positioning device, a loading mechanism, a carriage material detection device and a controller. The controller controls the vehicle conveying device according to the positioning signal of the positioning device to automatically convey the vehicle to the designated position; when the designated position reached by the vehicle is the loading position, the controller controls the loading mechanism to automatically load the material into the carriage of the vehicle; during the loading process, the controller controls the loading mechanism to stop loading according to the detection signal of the carriage material detection device, and controls the vehicle conveying device to convey the loaded vehicle to designated location; in the entire vehicle movement and loading process, no human intervention is required, which reduces personnel input and avoids the loss of materials and vehicles caused by human misjudgment, and improves the automation, low cost and high safety of loading; in addition, the controller also controls the carriage heating device according to the positioning signal of the positioning device, and uses the high-temperature hot air discharged from the mixing station to heat the carriage of the loading vehicle placed on the vehicle conveyor, and uses the waste heat of the mixing station to increase the temperature of the material close to the carriage wall, which not only ensures the performance of the material during transportation, but also makes full use of the waste heat energy, realizing the energy saving and high efficiency of the asphalt production and transportation process.

[0034] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 The present invention is a schematic structural diagram of an embodiment of an automatic loading system for an asphalt mixing station proposed by the present invention.

[0037] In the figure, the reference numerals and their corresponding component names are as follows:

[0038] 11. First conveying device; 12. Second conveying device; 13. Third conveying device;

[0039] 21. A first positioning sensor group; 22. A second positioning sensor group; 23. A third positioning sensor group;

[0040] 3. Loading mechanism;

[0041] 41. Weighing mechanism; 42. Camera;

[0042] 51. Exhaust pipe; 52. Drying device; 53. Blowing device;

[0043] 6. Loading vehicle. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0045] It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "front", "middle", "back", and "inside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0046] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly defined and specified, the term "connection" and the like should be understood in a broad sense. For example, "connection" can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0049] Figure 1 Shown is a structural schematic diagram of an embodiment of an automatic loading system for an asphalt mixing station of the utility model.

[0050] like Figure 1 As shown, the automatic loading system of the asphalt mixing plant of this embodiment includes a vehicle conveying device, a positioning device, a loading mechanism, a vehicle compartment material detection device, a vehicle compartment heating device and a controller.

[0051] The vehicle conveying device is connected to a controller (not shown in the figure). The vehicle conveying device is used to place the loading vehicle 6 and works under the control of a control signal sent by the controller to convey the loading vehicle 6 to a designated position.

[0052] In some embodiments, the vehicle transmission device is implemented using a transmission structure composed of a drive motor, a drive wheel, a driven wheel, a conveyor belt, etc., and the controller controls the vehicle transmission device by controlling the drive motor.

[0053] exist Figure 1 In the illustrated embodiment, the vehicle conveying device includes a first conveying device 11, a second conveying device 12, and a third conveying device 13 arranged sequentially from left to right, and the three conveying devices form a vehicle conveying device that conveys vehicles from left to right. The first conveying device 11, the second conveying device 12, and the third conveying device 13 are independent mechanisms from each other, but the conveying surfaces remain coplanar and close to each other, so that the loading vehicle 6 can be smoothly placed on the conveying surfaces of the three conveying devices in sequence.

[0054] The first conveyor 11 is located in the preheating area and is used to convey the loading vehicle 6 to the designated preheating position. The loading vehicle 6 to be loaded is first placed on the first conveyor 11 and then automatically conveyed. The second conveyor 12 is located in the loading area and is used to convey the preheated loading vehicle 6 from the first conveyor 11 to the designated loading position for loading. The third conveyor 13 is located in the removal area and conveys the loading vehicle 6 from the second conveyor 12 after loading to the designated removal position so that the driver can drive the loading vehicle away.

[0055] By setting a first conveying device 11 in the preheating area, the compartment wall of the loading vehicle 6 can be preheated before loading. The preheating process is not affected by the loading, avoiding the impact of the loading process on the heating process, and the preheating process does not affect the subsequent loading of the loading area and the removal of the vehicle in the removal area. By setting a third conveying device 13 in the removal area to convey the loading vehicle 6 after loading, when the driver removes the loading vehicle 6 from the third conveying device, he can stay away from the loading area where the second conveying device is located, reducing the harm to the human body caused by the harsh environment of loading. By setting three independent conveying devices to form the entire vehicle conveying device, it is convenient to independently control each section without affecting each other, and it can realize the parallel operation of multiple sections, thereby improving the loading efficiency.

[0056] In some other embodiments, a vehicle conveying device running through the three sections may also be provided, that is, a vehicle conveying device is provided for the entire loading system. The advantage is that the structure is simple, only one set of driving devices is required, and the control is easy to implement.

[0057] In accordance with the structure of the three conveying devices, the positioning device includes a first positioning sensor group 21 , a second positioning sensor group 22 and a third positioning sensor group 23 .

[0058] Among them, the first positioning sensor group 21 is arranged on the first conveying device 11 and / or at a position close to the first conveying device 11, and is used to locate the empty loading vehicle 6 that has not been loaded yet at the preheating position, so as to ensure that the loading vehicle 6 is conveyed to the preheating position so as to preheat its compartment wall. The first positioning sensor group 21 may include a plurality of positioning sensors. In some embodiments, the first positioning sensor group 21 includes two positioning sensors arranged diagonally. The positioning sensor can be an infrared sensor, an ultrasonic sensor, a distance sensor, etc. The specific positioning implementation technology is all existing technology and will not be described in more detail here.

[0059] The second positioning sensor group 22 is arranged on the second conveying device 12 and / or at a position close to the second conveying device 12, and is used to position the loading vehicle 6 during the loading process. The second positioning sensor group 22 may include multiple positioning sensors. In some embodiments, the second positioning sensor group 22 includes at least 3 pairs of positioning sensors, which can realize the positioning of the loading vehicle 6 at multiple different positions of the second conveying device 12. For example, using the positioning position of the first pair of positioning sensors, the loading mechanism 3 can load the front part of the carriage; after the front part of the carriage is basically loaded, the second conveying device 12 conveys the loading vehicle 6 forward, and uses the positioning position of the second pair of positioning sensors to enable the loading mechanism 3 to load the rear part of the carriage; after the rear part of the carriage is basically loaded, the second conveying device 12 conveys the loading vehicle 6 backward, and uses the positioning position of the third pair of positioning sensors to enable the loading mechanism 3 to load the middle part of the carriage. Thereby, fast and uniform loading of the interior of the carriage is achieved.

[0060] The third positioning sensor group 23 is arranged on the third conveying device 13 and / or at a position close to the third conveying device 13, and is used to locate the loading vehicle 6 after it is filled with materials. After the positioning is completed, the driver drives the loading vehicle 6 out of the automatic loading area to complete the automatic loading.

[0061] In this embodiment, the vehicle compartment heating device includes a drying device 52 and a blowing device 53. The input end of the drying device 52 is connected to the exhaust pipe 51 of the asphalt mixing plant, and the output end thereof is connected to the blowing device 53. The high-temperature gas discharged from the exhaust pipe 51 of the mixing plant enters the drying device 52 through a pipeline, and the drying device 52 dries the high-temperature gas, and the dried high-temperature gas is transported to the blowing device 53 through a pipeline. The blowing device 53 is arranged near the vehicle conveying device, specifically near the first conveying device 11 located in the preheating zone, and the high-temperature gas blown out by the blowing device 53 is blown toward the vehicle compartment wall of the loading vehicle 6 on the first conveying device 11, so as to achieve heating and preheating of the vehicle compartment wall. In some other embodiments, a plurality of blowing ports opening toward the vehicle compartment side wall and the vehicle compartment floor are arranged at the position of the first conveying device 11, and the high-temperature gas blown out by the blowing device 53 is blown toward the vehicle compartment side wall and the vehicle compartment floor through the plurality of blowing ports.

[0062] In some other embodiments, the drying device 52 is a cold dryer or a dryer, and the blowing device 53 is a blower.

[0063] In this embodiment, the loading mechanism includes a loading bin, a discharge hopper and a controllable loading door (not shown or marked in the figure). The loading bin is used to store the mixed asphalt mixture and has an outlet; the discharge hopper is located above the vehicle conveying device, specifically above the second conveying device 12 in the loading area, one end of which is connected to the loading bin and the other end has a discharge port facing the second conveying device 12; the controllable loading door is arranged at the outlet of the loading bin or the discharge port of the discharge hopper, and is connected to the controller and opened or closed according to the control signal sent by the controller. When the controllable loading door is opened, the vehicle below can be loaded; when the controllable loading door is closed, the loading of the vehicle below is stopped. The specific structure of the loading mechanism can be implemented by existing technology.

[0064] In order to detect the state of the material loaded in the loading vehicle 6 and realize automatic loading, in this embodiment, the carriage material detection device includes a weighing mechanism 41 and a camera 42. Among them, the camera 42 is located above the vehicle conveying device and close to the loading mechanism, specifically, it is located above the second conveying device 12 and on one side of the unloading hopper of the loading mechanism. In some embodiments, there can be multiple cameras 42, which are dispersedly arranged above the second conveying device 12 to realize comprehensive image acquisition of the carriage. The camera 42 is connected to the controller to collect the image of the material loaded in the carriage of the loading vehicle 6 and transmit the image detection signal to the controller. The weighing mechanism 41 is located below the vehicle conveying device and at a position corresponding to the camera 42, that is, below the second conveying device 12. It is also connected to the controller to obtain the weight detection signal of the material loaded in the carriage of the loading vehicle and transmit it to the controller. In some embodiments, the weighing mechanism 41 is implemented by a floor scale. The weight of the loaded material can be obtained by detecting the weight of the loading vehicle 6 before and after loading. The controller can know whether the vehicle is fully loaded according to the image detection signal, the weight of the loaded material and the rated load of the loading vehicle 6. The specific implementation according to the image detection signal or the state of the vehicle compartment material can be implemented by the existing technology, which will not be elaborated in detail here.

[0065] The following further describes the process of automatic loading using the loading system of the above embodiment.

[0066] When loading, the driver first stops the loading vehicle 6 on the conveyor belt of the first conveying device 11. After the first positioning sensor group 21 determines that the loading vehicle 6 is in place, the driver leaves and waits at the end of the third conveying device 13. After the controller determines that the loading vehicle 6 has reached the designated preheating position through the detection signal of the first positioning sensor group 21, the blowing device 53 is started to blow air to heat the side and bottom of the compartment, preheat the compartment in advance, and prepare for loading, so as to prevent the temperature of the materials around the compartment wall from dropping too fast during loading due to the low compartment temperature, thereby affecting the quality of the mixed materials.

[0067] After the preheating of the loading vehicle 6 is completed, the first conveying device 11 automatically conveys the loading vehicle 6 to the second conveying device 12. After the second positioning sensor group 22 determines that the loading vehicle 6 has arrived at the loading position, the weighing mechanism 41 weighs the loading vehicle 6 and sends a signal to the controller after the weighing is completed; then, the controller combines the image detection signal fed back by the camera 42 to control the loading mechanism 3 and the second conveying device 12 to start loading in the order of "front, middle, and back".

[0068] After the carriage is filled with materials, the loading controllable door of the loading mechanism 3 is closed, and the second conveying device 12 automatically moves the loading vehicle 6 backward and transfers it to the third conveying device 13. After the third positioning sensor group 23 determines that the loading vehicle 6 has reached the designated removal position, the driver drives the vehicle away, thus completing the entire loading process.

[0069] In the above embodiment, the loading is automated by moving the position of the loading vehicle by the vehicle conveying device, which not only reduces the input of personnel and safety risks, and avoids material loss and vehicle damage; but also utilizes the waste heat discharged by the mixing station to heat the carriage, and insulates the mixed material around the carriage wall, thereby ensuring the performance of the mixed material and saving energy.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. An automatic loading system for an asphalt mixing plant, characterized in that: The system comprises: A vehicle conveying device, used for placing a loading vehicle and conveying the loading vehicle to a designated location; a positioning device for locating the position of the loading vehicle placed on the vehicle conveying device; a loading mechanism, at least part of which is located above the vehicle conveyor, for loading materials into a compartment of the loading vehicle placed on the vehicle conveyor; a carriage material detection device for detecting the state of the material loaded in the carriage of the loading vehicle placed on the vehicle conveying device; A compartment heating device, used to heat the compartment of the loading vehicle placed on the vehicle conveying device by using the high-temperature hot air discharged from the mixing station; The controller is used to receive the positioning signal of the positioning device and the detection signal of the carriage material detection device, and to send control signals for controlling the vehicle conveying device, the loading mechanism and the carriage heating device.

2. The automatic loading system for asphalt mixing plant according to claim 1, characterized in that: The vehicle transmission device comprises: A first conveying device, located in the preheating area, for conveying the charging vehicle to a designated preheating position; a second conveying device, located in the loading area, for conveying the loading vehicle from the first conveying device to a designated loading location; The third conveying device is located in the removal area and is used to convey the loading vehicle from the second conveying device to a designated vehicle transfer position.

3. The automatic loading system for asphalt mixing plant according to claim 2, characterized in that: The positioning device comprises: A first positioning sensor group, which is arranged on the first conveying device and / or arranged at a position close to the first conveying device; A second positioning sensor group, which is arranged on the second conveying device and / or arranged at a position close to the second conveying device; A third positioning sensor group is arranged on the third conveying device and / or at a position close to the third conveying device.

4. The automatic loading system for asphalt mixing plant according to claim 1, characterized in that: The charging mechanism comprises: A loading bin is used to store the mixed asphalt mixture and has an outlet; A discharge hopper, which is located above the vehicle conveying device, one end of which is connected to the loading bin, and the other end of which has a discharge port facing the vehicle conveying device; A controllable charging door is arranged at the outlet of the charging bin or the discharge outlet of the discharge hopper and is connected to the controller to be opened or closed according to a control signal sent by the controller.

5. The automatic loading system for asphalt mixing plant according to claim 1, characterized in that: The carriage material detection device comprises: A camera, which is located above the vehicle conveying device and close to the loading mechanism, is connected to the controller and is used to obtain an image detection signal of the material loaded in the compartment of the loading vehicle and transmit it to the controller; A weighing mechanism is located below the vehicle conveying device and at a position corresponding to the camera. The weighing mechanism is connected to the controller and is used to obtain a weight detection signal of the material loaded in the compartment of the loading vehicle and transmit the weight detection signal to the controller.

6. The automatic loading system for an asphalt mixing plant according to any one of claims 1 to 5, characterized in that: The vehicle compartment heating device comprises: A drying device connected to the exhaust pipe of the asphalt mixing plant and used for drying the high-temperature gas from the exhaust pipe; The blowing device is arranged at a position close to the vehicle conveying device and connected to the drying device, and is used for blowing the high-temperature gas dried by the drying device toward the compartment wall of the loading vehicle placed on the vehicle conveying device.

7. The automatic loading system for asphalt mixing plant according to claim 6, characterized in that: The drying device is a cold dryer or a dryer; the blowing device is a blower.

Images