Device and method for accurate and synchronous material distribution of crown block and movable material distribution machine

Abstract

The invention discloses a device and a method for accurate and synchronous material distribution of a crown block and a movable material distributor, and relates to the technical field of material distribution, the device comprises a material distributor, the crown block, a sensor assembly and a synchronous control module; the crown block is arranged below the material distribution machine, the material distribution machine is used for bulk material storage, and the crown block is used for material distribution and loading; the material distributing machine comprises a material storage box and a discharging opening, the material storage box is used for storing dry materials or wet materials, and the discharging opening is formed in one side of the bottom of the material storage box and used for discharging materials to a crown block; the crown block comprises a support, a conveying mechanism and a discharging mechanism. The conveying mechanism is fixedly arranged at the top of the support, the conveying mechanism is arranged close to one side of the discharging opening, and the conveying mechanism is used for conveying dry materials or wet materials in the storage box to the discharging mechanism from the discharging opening; the discharging mechanism is arranged on the support, the discharging mechanism is located below the conveying mechanism, and the discharging mechanism is movably connected with the support. The sensor assembly collects state information of the material distributing machine, the conveying mechanism and the discharging mechanism in real time and transmits the state information to the synchronous control module. The synchronous control module is connected with the sensor assembly; the synchronous control module accurately controls operation of the material distributing machine and the crown block according to monitoring data transmitted by the sensor assembly, and accurate and synchronous material distribution of the material distributing machine and the crown block is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of material placing, and in particular to a device and method for accurately and synchronously placing materials by an overhead crane and a mobile placing machine. Background Art

[0002] In industrial production, materials often need to be evenly distributed. Traditionally, a single distribution device is used for distribution. However, although ordinary mobile distribution machines have certain flexibility, they have the characteristics of insufficient distribution range and poor synchronization when working with other equipment.

[0003] The automated overhead crane bulk material placing machine mainly relies on program control for bulk material storage and loading. The synchronization program control of the bulk material placing machine and the overhead crane will directly affect the efficiency and accuracy of the bulk material placing machine during operation. The key points of control need to consider the bulk material placing machine speed, the overhead crane speed, the real-time displacement difference between the bulk material placing machine and the overhead crane, the storage utilization rate of the bulk material placing warehouse, the efficiency of loading, the accuracy of loading, etc.

[0004] Therefore, in order to improve the efficiency and accuracy of material distribution, a device and method are needed that can achieve precise synchronous material distribution between an overhead crane and a mobile material distribution machine. Summary of the invention

[0005] The purpose of the present invention is to provide a device and method for accurately synchronizing the laying of materials between an overhead crane and a mobile material placing machine, so as to solve the technical problem in the prior art that "the traditional material placing method usually adopts a single material placing device and a mobile material placing machine for laying materials. However, although the mobile material placing machine has a certain flexibility, its material placing range is not enough, and there is also poor synchronization when working in coordination with other equipment."

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A device for accurately synchronizing materials distributing between an overhead crane and a mobile material distributing machine, comprising a material distributing machine, an overhead crane, a sensor assembly and a synchronization control module;

[0008] The overhead crane is arranged below the material placing machine, the material placing machine is used for bulk material storage, and the overhead crane is used for material placing and loading;

[0009] The material placing machine comprises a material storage box and a material discharge port, wherein the material storage box is used to store dry materials or wet materials, and the material discharge port is arranged at one side of the bottom of the material storage box and is used to discharge materials to the overhead travelling crane;

[0010] The overhead crane comprises a support, a conveying mechanism and a discharge mechanism;

[0011] The conveying mechanism is fixedly mounted on the top of the bracket, and is arranged close to the discharge port. The conveying mechanism is used to convey the dry material or wet material in the storage box from the discharge port to the discharge mechanism.

[0012] The unloading mechanism is arranged on the bracket, the unloading mechanism is located below the conveying mechanism, and the unloading mechanism is movably connected to the bracket;

[0013] The sensor assembly collects status information of the material placing machine, the conveying mechanism, and the material discharging mechanism in real time, and transmits the status information to the synchronous control module;

[0014] The synchronous control module is connected to the sensor assembly; the synchronous control module accurately controls the operation of the material placing boom and the overhead crane according to the monitoring data transmitted by the sensor assembly, so as to achieve accurate synchronous material placing of the two.

[0015] Beneficial technical effects of the above technical solution: Compared with the prior art, a device for accurately synchronizing the material distribution between an overhead crane and a mobile material distribution machine has been effectively improved in the overall structure and assembly method of the material distribution machine, the overhead crane, the sensor assembly and the synchronous control module, and an automated overhead crane is installed under the material distribution machine to ensure accurate material distribution and loading; a fixed conveying mechanism and a movable unloading mechanism are provided on the overhead crane, and the conveying mechanism is used to ensure that the dry material or wet material in the storage box is transported from the unloading port to the unloading mechanism, and the sensor assembly is provided to collect the status information of the material distribution machine, the conveying mechanism and the unloading mechanism in real time, and transmit the status information to the synchronous control module; the synchronous control module performs real-time monitoring and data analysis; the synchronous control module automatically calculates the moving path and speed of the unloading mechanism according to the collected data and the material distribution process; by controlling the movement of the unloading mechanism and the operation of the auxiliary belt, the accurate synchronous material distribution is further ensured; so as to solve the technical problem in the prior art that "the traditional material distribution method usually adopts a single material distribution device, resulting in insufficient material distribution range, or poor synchronization when working with other equipment".

[0016] As a further improvement of the above solution, the conveying mechanism includes a conveying belt and a discharge port; the discharge port is arranged at the output end of the conveying belt.

[0017] The beneficial technical effect of the above technical solution is: by providing a discharge port at the output end of the conveyor belt, it is ensured that the conveying mechanism evenly transports the dry material or wet material in the storage box to the unloading mechanism.

[0018] As a further improvement of the above scheme, the unloading mechanism includes a unloading belt, a walking roller mechanism and a material dispensing port;

[0019] The unloading belt is located below the unloading port, the walking roller mechanism is arranged below the unloading belt, the bracket is provided with a slide rail compatible with the walking roller mechanism, the unloading belt cooperates with the slide rail through the walking roller mechanism to realize the left and right movement of the unloading mechanism on the bracket; the cloth port is arranged on the bracket, and the cloth port is located below the unloading belt.

[0020] As a further improvement of the above solution, the walking roller mechanism is installed at both ends of the unloading belt.

[0021] The beneficial technical effects of the above technical scheme are as follows: by installing a walking roller mechanism at the bottom of the unloading belt and providing a slide rail compatible with the walking roller mechanism on the bracket, it is ensured that the unloading mechanism can move left and right on the bracket; by installing a movable unloading mechanism on the overhead crane, the material placing machine scatters dry or wet materials onto the conveyor belt on the overhead crane, and the conveyor belt is then transported to the movable unloading belt through the unloading port, and the movable unloading mechanism moves left and right and the unloading belt moves forward and reversely, so as to ensure that there are no dead angles in the material shed for material placing and loading.

[0022] As a further improvement of the above solution, the sensor assembly includes a position sensor and a speed sensor;

[0023] The position sensor is installed on the overhead crane and is used to monitor the distance between the overhead crane and the concrete placing machine in real time;

[0024] The speed sensors are respectively installed on the unloading belt and the walking roller mechanism to monitor the running speeds of the two in real time.

[0025] The beneficial technical effects of the above technical solution are as follows: by providing position sensors on the overhead crane and the fabric placing machine or the fabric placing machine or the overhead crane, the position sensors are used to monitor the position information of the two in real time, so that the positions of the overhead crane and the fabric placing machine correspond to each other, further improving the accuracy and efficiency of precise and synchronous fabric placing; by providing speed sensors on the unloading belt and the walking roller mechanism, the speed sensors are used to monitor the running speeds of the two in real time, and the moving speed of the unloading mechanism and the running speed and direction of the unloading belt are controlled by the synchronous control module, further improving the accuracy and efficiency of precise and synchronous fabric placing between the fabric placing machine and the overhead crane.

[0026] As a further improvement of the above solution, the position sensor adopts a laser rangefinder.

[0027] The beneficial technical effects of the above technical solution are as follows: by adopting the laser rangefinder as the position sensor component, the laser rangefinder has the advantages of easy installation, long service life, simple structure, high detection accuracy, etc., so as to ensure the accuracy of detection data and further improve the accuracy and efficiency of precise synchronization of material distribution between the concrete placing machine and the overhead crane.

[0028] As a further improvement of the above solution, the synchronization control module adopts a PLC control module.

[0029] The beneficial technical effects of the above technical solution are as follows: by adopting the PLC control module as the synchronous control module, the PLC module has the advantages of high reliability and strong anti-interference ability. PLC reliability is the key performance of electrical control equipment. PLC adopts modern large-scale integrated circuit technology and is manufactured using strict production processes. The internal circuit adopts advanced anti-interference technology and has high reliability, which further ensures the accuracy of detection data and control process, and further improves the accuracy and efficiency of precise synchronization of the fabricating machine and the overhead crane.

[0030] As a further improvement of the above solution, a method for accurately synchronizing material placement between an overhead crane and a mobile material placing machine comprises the following steps:

[0031] S1: Start the overhead crane and concrete placing crane simultaneously;

[0032] S2: The sensor component monitors the position and operation status of the overhead crane and the concrete placing crane in real time, and transmits the monitoring data to the synchronous control module;

[0033] S3: The synchronous control module analyzes and processes the monitoring data, calculates the moving path and speed of the unloading mechanism, and generates control instructions to control the moving speed of the walking roller mechanism and the running speed of the unloading belt so that the two can run synchronously;

[0034] S4: During the material laying process, the synchronous control module continuously adjusts the speed and direction of the walking roller mechanism and the unloading belt to ensure the uniformity and accuracy of the material laying;

[0035] S5: Based on the collected data and the material distribution process, the synchronous control module automatically calculates the moving path and speed of the material distribution trolley, and realizes accurate material distribution by controlling the operation of the material distribution machine, conveying mechanism, and unloading mechanism.

[0036] The beneficial technical effects of the above technical solution are: the position and operating status of the overhead crane and the material placing boom are monitored in real time through the sensor component, and the monitoring data is transmitted to the synchronous control module; the synchronous control module analyzes and processes the monitoring data, the PLC automatically calculates the moving path and speed of the unloading mechanism, and generates control instructions to control the moving speed of the walking roller mechanism and the operating speed of the unloading belt, so that the two maintain synchronous operation; further improving the accuracy and efficiency of the precise synchronization of the material placing boom and the overhead crane.

[0037] As a further improvement of the above solution, the precise synchronization of the crane and the concrete placing machine is achieved through the following algorithm:

[0038] S1: Calculate the speed correspondence y=a+bx according to the speed and reduction ratio of the travel motor of the concrete placing machine and the speed and speed ratio of the travel motor of the overhead crane, and calculate the two parameter values ​​of a and b; among which, the real-time speed of the travel motor of the overhead crane is converted into the drive motor frequency x, and the frequency of the travel motor of the concrete placing machine is y;

[0039] S2: Obtain the real-time position deviation c of the material placing machine and the conveying mechanism through the position sensor;

[0040] S3: Set the maximum position deviation, i.e. the starting adjustment value d;

[0041] S4: Set the position deviation adjustment stop value e;

[0042] S5: Set the speed adjustment factor f;

[0043] S6: When the c value is greater than the d value, the deviation value is too large, which will cause the material to spill out of the conveyor belt. At this time, it is necessary to adjust the synchronous speed of the two. When the speed is fast, reduce the speed that is too fast, and when the speed is too slow, increase the speed that is too slow. At this time, the corresponding relationship between the two is y=a+(b+f)x;

[0044] S7: When the c value is less than the e value, the deviation value returns to the normal position, the speed difference adjustment stops, and the speed correspondence relationship y=a+bx is restored.

[0045] The beneficial technical effects of the above technical solution are as follows: the speed correspondence y=a+bx is calculated by the speed and reduction ratio of the concrete placing machine's travel motor and the speed and speed ratio of the overhead crane's travel motor; a laser ranging sensor is installed on the overhead crane to collect the distance between the overhead crane and the concrete placing machine in real time; and the PLC algorithm further ensures the precise synchronization of the crane and the concrete placing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementations of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0047] Figure 1 A schematic diagram of the structure and assembly of a material placing boom and a crane provided in Example 1 of the present invention;

[0048] Figure 2 A schematic diagram of a synchronous control process of a material placing machine and an overhead crane provided in Embodiment 2 of the present invention;

[0049] Figure 3 A schematic diagram of synchronous control of a material placing machine and a conveyor belt provided in Embodiment 3 of the present invention;

[0050] Description of reference numerals;

[0051] 1-fabricating machine; 11-material storage box; 12-discharging port; 2-overhead crane; 21-bracket; 22-conveying mechanism; 221-conveying belt; 222-discharging port; 23-discharging mechanism; 231-discharging belt; 232-traveling roller mechanism; 233-fabricating port; 24-slide rail. DETAILED DESCRIPTION

[0052] Example 1

[0053] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments.

[0054] like Figure 1 As shown, a device for accurately synchronizing materials distributing between an overhead crane and a mobile material distributing machine comprises a material distributing machine 1, an overhead crane 2, a sensor assembly and a synchronization control module;

[0055] The overhead crane 2 is arranged below the material placing machine 1. The material placing machine 1 is used for bulk material storage, and the overhead crane 2 is used for material placing and loading;

[0056] The material placing machine 1 comprises a material storage box 11 and a material discharge port 12. The material storage box 11 is used to store dry materials or wet materials. The material discharge port 12 is arranged at one side of the bottom of the material storage box 11 and is used for placing materials and loading them.

[0057] The overhead crane 2 includes a support 21, a conveying mechanism 22 and a discharge mechanism 23;

[0058] The conveying mechanism 22 is fixedly mounted on the top of the bracket 21 and is disposed near the discharge port 12. The conveying mechanism 22 is used to convey the dry material or wet material in the storage box 11 from the discharge port 12 to the discharge mechanism 23.

[0059] The unloading mechanism 23 is disposed on the bracket 21, and the unloading mechanism 23 is located below the conveying mechanism 22, and the unloading mechanism 23 is movably connected to the bracket 21;

[0060] The sensor component collects status information of the material placing machine 1, the conveying mechanism 22, and the unloading mechanism 23 in real time, and transmits the status information to the synchronous control module;

[0061] The synchronous control module is connected to the sensor assembly; the synchronous control module accurately controls the operation of the material placing machine 1 and the overhead crane 2 according to the monitoring data transmitted by the sensor assembly, so as to realize accurate synchronous material placing of the two; by effectively improving the overall structure and assembly method of the material placing machine 1, the overhead crane 2, the sensor assembly and the synchronous control module, by installing the automatic overhead crane 2 under the material placing machine 1, accurate material placing and loading are ensured; by providing a fixed conveying mechanism 22 and a movable unloading mechanism 23 on the overhead crane 2, the conveying mechanism 22 is used to ensure that the dry material or wet material in the material storage box 11 is conveyed from the unloading port 12 to the unloading mechanism 23, by setting the sensor assembly, the state information of the material placing machine 1, the conveying mechanism 22 and the unloading mechanism 23 is collected in real time, and the state information is transmitted to the synchronous control module; the synchronous control module performs real-time monitoring and data analysis; the synchronous control module automatically calculates the moving path and speed of the unloading mechanism 23 according to the collected data and the material placing process flow; by controlling the movement of the unloading mechanism 23 and the operation of the auxiliary belt, the accurate synchronous material placing is further ensured.

[0062] In this embodiment, the conveying mechanism 22 includes a conveying belt 221 and a discharge port 222; the discharge port 222 is arranged at the output end of the conveying belt 221; by arranging the discharge port 222 at the output end of the conveying belt 221, it is ensured that the conveying mechanism 22 evenly transports the dry material or wet material in the storage box 11 to the unloading mechanism 23.

[0063] In this embodiment, the unloading mechanism 23 includes a unloading belt 231, a walking roller mechanism 232 and a material dispensing port 233;

[0064] The unloading belt 231 is located below the unloading port 222, the walking roller mechanism 232 is arranged below the unloading belt 231, and the walking roller mechanism 232 is installed at both ends of the unloading belt 231, and the bracket 21 is provided with a slide rail 24 adapted to the walking roller mechanism 232. The unloading belt 231 cooperates with the slide rail 24 through the walking roller mechanism 232 to realize the left and right movement of the unloading mechanism 23 on the bracket 21; the cloth opening 233 is arranged on the bracket 21, and the cloth opening 233 is located below the unloading belt 231; by A walking roller mechanism 232 is installed on the bracket 21, and a slide rail 24 matched with the walking roller mechanism 232 is provided on the bracket 21 to ensure that the unloading mechanism 23 can move left and right on the bracket 21; by installing a movable unloading mechanism 23 on the overhead crane 2, the material placing machine 1 scatters dry or wet materials onto the conveyor belt 221 on the overhead crane 2, and the conveyor belt 221 is then transported to the movable unloading belt 231 through the discharge port 222. The movable unloading mechanism 23 moves left and right and the unloading belt 231 rotates forward and reversely to ensure that there is no dead angle in the material shed for material placing and loading.

[0065] In this embodiment, the sensor assembly includes a position sensor and a speed sensor;

[0066] The position sensor is installed on the overhead crane 2 and is used to monitor the distance between the overhead crane 2 and the concrete placing machine 1 in real time;

[0067] Speed ​​sensors are respectively installed on the discharge belt 231 and the walking roller mechanism 232, and are used to monitor the running speeds of the two in real time; by providing position sensors on the overhead crane 2 and the fabric boom 1 or the fabric boom 1 or the overhead crane 2, the position sensors are used to monitor the position information of the two in real time, so that the positions of the overhead crane 2 and the fabric boom 1 correspond to each other, further improving the accuracy and efficiency of precise and synchronous fabric distribution; by providing speed sensors on the discharge belt 231 and the walking roller mechanism 232, the speed sensors are used to monitor the running speeds of the two in real time, and the moving speed of the discharge mechanism and the running speed and direction of the discharge belt are controlled by the synchronous control module, further improving the accuracy and efficiency of precise and synchronous fabric distribution between the fabric boom 1 and the overhead crane 2.

[0068] In this embodiment, the position sensor adopts a laser rangefinder; by adopting the laser rangefinder as the position sensor component, the laser rangefinder has the advantages of easy installation, long service life, simple structure, and convenient material acquisition, so as to ensure the accuracy of the detection data and further improve the accuracy and efficiency of the precise synchronization of the material placing machine 1 and the overhead crane 2.

[0069] In this embodiment, the synchronous control module adopts a PLC control module; by adopting the synchronous control module to the PLC control module, the PLC module has the advantages of high reliability and strong anti-interference ability. PLC reliability is the key performance of electrical control equipment. PLC adopts modern large-scale integrated circuit technology and strict production process manufacturing. The internal circuit adopts advanced anti-interference technology and has high reliability, which further ensures the accuracy of detection data and the precision of control process, and further improves the accuracy and efficiency of precise synchronization of material distribution between the placing machine and the overhead crane.

[0070] In this embodiment, a height detection sensor is also installed on the unloading mechanism 23, and the height detection sensor can expand the surface to the three-dimensional warehouse, thereby achieving high-precision, wide-area storage full coverage and precise loading.

[0071] Example 2

[0072] like Figure 2 As shown, a method for accurately synchronizing material distribution between an overhead crane and a mobile material distribution machine comprises the following steps:

[0073] S1: Start the overhead crane 2 and the concrete placing crane 1 simultaneously;

[0074] S2: The sensor component monitors the position and operation status of the overhead crane 2 and the concrete placing crane 1 in real time, and transmits the monitoring data to the synchronous control module;

[0075] S3: The synchronous control module analyzes and processes the monitoring data, calculates the moving path and speed of the unloading mechanism 23, and generates a control instruction to control the moving speed of the walking roller mechanism 232 and the operating speed of the unloading belt 231 so that the two maintain synchronous operation;

[0076] S4: During the material distribution process, the synchronous control module continuously adjusts the speed and direction of the walking roller mechanism 232 and the unloading belt 231 to ensure the uniformity and accuracy of the material distribution;

[0077] S5: Based on the collected data and the material distribution process, the synchronous control module automatically calculates the moving path and speed of the material distribution trolley, and realizes accurate material distribution by controlling the operation of the material distribution machine 1, the conveying mechanism 22, and the unloading mechanism 23.

[0078] Example 3

[0079] like Figure 3 As shown in the figure, a method for accurately synchronizing the material distribution between the overhead crane and the mobile concrete placing machine is provided. The accurate synchronization between the overhead crane and the concrete placing machine is achieved by the following algorithm:

[0080] S1: Calculate the speed correspondence y=a+bx between the travel motor speed and reduction ratio of the concrete placing machine 1 and the travel motor speed and speed ratio of the overhead crane 2, and calculate the two parameter values ​​of a and b; the real-time speed of the travel motor of the overhead crane 2 is converted into the drive motor frequency x, and the travel motor frequency of the concrete placing machine 1 is y;

[0081] S2: Obtain the real-time position deviation c of the material placing machine 1 and the conveying mechanism 22 through the position sensor;

[0082] S3: Set the maximum position deviation, i.e. the starting adjustment value d;

[0083] S4: Set the position deviation adjustment stop value e;

[0084] S5: Set the speed adjustment factor f;

[0085] S6: When the c value is greater than the d value, the deviation value is too large, which may cause the material to spill out of the conveyor belt 221. At this time, it is necessary to adjust the synchronous speed of the two. When the speed is fast, reduce the speed that is too fast, and when the speed is too slow, increase the speed that is too slow. At this time, the corresponding relationship between the two is y=a+(b+f)x;

[0086] S7: When the c value is less than the e value, the deviation value returns to the normal position, the speed difference adjustment stops, and the speed correspondence relationship y=a+bx is restored.

[0087] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0088] Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention.

[0089] The above are only preferred embodiments of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should all be regarded as protection of the present invention.

Claims

1. A device for accurately synchronizing material distribution between an overhead crane and a mobile material distribution machine, characterized in that: It comprises a material placing machine (1), an overhead crane (2), a sensor component and a synchronous control module; The overhead crane (2) is arranged below the material placing machine (1); the material placing machine (1) is used for bulk material storage, and the overhead crane (2) is used for material placing and loading; The material placing machine (1) comprises a material storage box (11) and a material discharge port (12), wherein the material storage box (11) is used to store dry materials or wet materials, and the material discharge port (12) is arranged at one side of the bottom of the material storage box (11) and is used for placing materials and loading them onto trucks; The overhead crane (2) comprises a support (21), a conveying mechanism (22) and a discharge mechanism (23); The conveying mechanism (22) is fixedly mounted on the top of the bracket (21), and is disposed close to the discharge port (12). The conveying mechanism (22) is used to convey the dry material or wet material in the storage box (11) from the discharge port (12) to the discharge mechanism (23); The unloading mechanism (23) is arranged on the bracket (21), the unloading mechanism (23) is located below the conveying mechanism (22), and the unloading mechanism (23) is movably connected to the bracket (21); The sensor assembly collects status information of the material placing machine (1), the conveying mechanism (22), and the material discharging mechanism (23) in real time, and transmits the status information to the synchronous control module; The synchronous control module is connected to the sensor assembly; the synchronous control module accurately controls the operation of the material placing machine (1) and the overhead crane (2) based on the monitoring data transmitted by the sensor assembly, thereby achieving accurate synchronous material placing of the two.

2. The device for accurately synchronizing material distribution between an overhead crane and a mobile material distribution machine according to claim 1, characterized in that: The conveying mechanism (22) comprises a conveying belt (221) and a material discharge port (222); the material discharge port (222) is arranged at the output end of the conveying belt (221).

3. The device for precisely synchronizing material distribution between an overhead crane and a mobile material distribution machine according to claim 1, characterized in that: The unloading mechanism (23) comprises a unloading belt (231), a walking roller mechanism (232) and a material dispensing port (233); The unloading belt (231) is located below the unloading port (222), the walking roller mechanism (232) is arranged below the unloading belt (231), the bracket (21) is provided with a slide rail (24) adapted to the walking roller mechanism (232), and the unloading belt (231) cooperates with the slide rail (24) through the walking roller mechanism (232) to realize the left and right movement of the unloading mechanism (23) on the bracket (21); The material distribution opening (233) is arranged on the bracket (21), and the material distribution opening (233) is located below the unloading belt (231).

4. The device for accurately and synchronously placing materials between an overhead crane and a mobile material placing machine according to claim 3 is characterized in that: The walking roller mechanism (232) is installed at both ends of the unloading belt (231).

5. The device for precisely synchronizing material distribution between an overhead crane and a mobile material distribution machine according to claim 1, characterized in that: The sensor assembly includes a position sensor and a speed sensor; The position sensor is mounted on the overhead travelling crane (2) and is used to monitor the distance between the overhead travelling crane (2) and the material placing machine (1) in real time; The speed sensors are respectively installed on the unloading belt (231) and the walking roller mechanism (232) to monitor the running speeds of the two in real time.

6. The device for precisely synchronizing material distribution between an overhead crane and a mobile material distribution machine according to claim 5, characterized in that: The position sensor adopts a laser rangefinder.

7. The device for precisely synchronizing material distribution between an overhead crane and a mobile material distribution machine according to claim 1, characterized in that: The synchronous control module adopts a PLC control module.

8. A method for accurately synchronizing material distribution between an overhead crane and a mobile material distribution machine, characterized in that: The device for precisely synchronously distributing materials according to any one of claims 1 to 7 is used to precisely distribute materials synchronously, comprising the following steps: S1: Start the overhead crane (2) and the concrete placing crane (1) simultaneously; S2: The sensor component monitors the position and operation status of the overhead crane (2) and the concrete placing machine (1) in real time, and transmits the monitoring data to the synchronous control module; S3: The synchronous control module analyzes and processes the monitoring data, calculates the moving path and speed of the unloading mechanism (23), and generates a control instruction to control the moving speed of the walking roller mechanism (232) and the operating speed of the unloading belt (231) so that the two maintain synchronous operation; S4: During the material distribution process, the synchronous control module continuously adjusts the speed and direction of the walking roller mechanism (232) and the unloading belt (231) to ensure the uniformity and accuracy of the material distribution; S5: Based on the collected data and the material distribution process, the synchronous control module automatically calculates the moving path and speed of the material distribution trolley, and realizes accurate material distribution by controlling the operation of the material distribution machine (1), the overhead crane (2), the conveying mechanism (22), and the unloading mechanism (23).

9. The method for accurately synchronizing material distribution between an overhead crane and a mobile material distribution machine according to claim 8, characterized in that: The precise synchronization of the crane and the concrete placing machine is achieved through the following algorithms: S1: Calculate the speed correspondence y=a+bx between the travel motor speed and reduction ratio of the material placing machine (1) and the travel motor speed and speed ratio of the overhead crane (2), and calculate the values ​​of the two parameters a and b; wherein the real-time speed of the travel motor of the overhead crane (2) is converted into the control frequency x of the drive motor, and the control frequency of the travel motor of the material placing machine (1) is y; S2: obtaining the real-time position deviation c of the material placing machine (1) and the conveying mechanism (22) through a position sensor; S3: Set the maximum position deviation, i.e. the starting adjustment value d; S4: Set the position deviation adjustment stop value e; S5: Set the speed adjustment factor f; S6: When the c value is greater than the d value, the deviation value is too large and will cause the material to spill out of the conveyor belt (221). At this time, it is necessary to adjust the synchronous speed of the two. When the speed is relatively fast, the one that is too fast is reduced, and when the speed is too slow, the one that is too slow is increased. At this time, the corresponding relationship between the two is y=a+(b+f)x; S7: When the c value is less than the e value, the deviation value returns to the normal position, the speed difference adjustment stops, and the speed correspondence relationship y=a+bx is restored.

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