Construction method of electric concrete discharge hopper of hydraulic type cement concrete mixing station

Abstract

This invention discloses a construction method for an electric concrete discharge hopper in a hydraulic cement concrete mixing plant, comprising: Step 1, installing the hopper body on a steel structure support fixedly installed on the ground, the hopper body being designed with wear-resistant steel structure; Step 2, installing the three-stage discharge hopper of the dual-specification discharge port module below the hopper body; Step 3, installing the electric drive switching mechanism on the steel structure support; Step 4, installing the sliding secondary-stage discharge hopper of the dual-specification discharge port module on the electric drive switching mechanism; Step 5, preparing concrete, during which the aggregate is monitored, analyzed, and adjusted by the control system; Step 6, according to the prepared concrete gradation, the electric drive switching mechanism automatically switches the secondary-stage discharge hopper to a position below or to the side of the tertiary-stage discharge hopper for discharge. This construction method adopts a dual discharge mode of fixed hopper combined with sliding hopper, and realizes automatic switching of discharge mode through electric drive switching mechanism, which has strong applicability and high efficiency.

Description

Technical Field

[0001] This invention relates to the field of concrete mixing plant technology, and in particular to a construction method for an electric concrete discharge hopper in a hydraulic cement concrete mixing plant. Background Technology

[0002] Concrete pouring operations have extremely high requirements for the compatibility of concrete gradation, especially in water conservancy and waterway engineering construction. Second-grade concrete (i.e., normal concrete, aggregate particle size ≤4cm) and third-grade concrete (aggregate particle size ≤8cm) are the two most commonly used concrete materials in hydraulic engineering projects. During the concrete production process, cement concrete mixing plants need to match concrete hoppers with different discharge diameters according to different concrete gradations. Second-grade concrete is suitable for concrete hoppers with a discharge diameter of 20-30cm, while third-grade concrete requires concrete hoppers with a discharge diameter of 50-80cm.

[0003] Traditional hydraulic concrete mixing plants typically use a fixed discharge hopper design or are only equipped with a simple manual switching structure (requiring manual switching). This not only results in low switching efficiency but also increases the risk of personnel working at heights and makes it impossible to safely and efficiently adapt to the discharge requirements of two different gradations of concrete. In terms of production efficiency, if a traditional hydraulic concrete mixing plant needs to switch between two-stage and three-stage concrete discharge modes, it requires manual disassembly and replacement of discharge port accessories or adjustment of baffle positions. A single switch can take 10-20 minutes, and the mixing plant must suspend production during the switch, directly reducing concrete production efficiency. At the same time, manually adjusting the discharge port diameter is difficult to accurately match the aggregate particle size, which can easily lead to uneven discharge rate and aggregate separation, further affecting the pouring progress and concrete quality. In terms of operational safety, the concrete discharge hopper is usually located at a high position in the mixing plant (with a vertical drop of 4.5-5m). Operators need to complete the switching operation on a high platform, which not only faces safety risks such as falling and being injured by falling materials, but also the low precision of manual high-altitude operations can easily lead to problems such as uneven discharge and concrete overflow due to misoperation.

[0004] In addition, although some existing concrete discharge devices have introduced automated control (such as automatic flow control and anti-drip design), they all focus on the efficiency optimization of a single discharge mode and have not solved the problem of automatic switching between secondary and tertiary concrete. A few batching plant discharge port conversion devices can only adjust the height of the guide pipe to adapt to different transportation equipment, and cannot achieve automatic switching of discharge port specifications according to the differences in concrete gradation. Moreover, they rely on hydraulic drive, have complex structures and high maintenance costs, and are not suitable for the harsh operating environment of hydraulic cement concrete batching plants. Summary of the Invention

[0005] One of the objectives of this invention is, at least, to provide a construction method for an electric concrete discharge hopper in a hydraulic cement concrete mixing plant, addressing the problems existing in the prior art. This method is highly applicable and efficient, not only meeting the discharge requirements for both secondary and tertiary grade concrete, but also avoiding the problems of low switching efficiency and high operational risks caused by manual switching, as well as the uneven discharge rate and aggregate segregation caused by the difficulty in accurately matching aggregate particle size through manual adjustment, which leads to concrete quality issues. Furthermore, it avoids the problem of production interruption due to switching, thus affecting the pouring progress.

[0006] To achieve the above objectives, the technical solution adopted by the present invention includes the following aspects.

[0007] A construction method for an electric concrete discharge hopper in a hydraulic cement concrete mixing plant includes the following steps: Step 1: Install the bucket body on the steel structure support fixed on the ground. The bucket body is designed with wear-resistant steel structure. Step 2: Install the three-stage discharge hopper of the dual-specification discharge port module at the bottom of the hopper body; Step 3: Install the electric drive switching mechanism on the steel structure support. The electric drive switching mechanism includes a servo motor, an electric push rod, a guide rail assembly, a reducer, and a buffer device. Step 4: Install the sliding secondary discharge hopper of the dual-specification discharge port module onto the electric drive switching mechanism; Step 5: Concrete preparation. During the preparation process, the aggregate is monitored, analyzed, and adjusted by the control system, which includes sensor components, a material gradation identification module, a controller, and a human-machine interface terminal. Step 6: Based on the prepared concrete gradation, the electric drive switching mechanism automatically switches the secondary gradation discharge hopper to a position below or to the side of the tertiary gradation discharge hopper for material discharge.

[0008] Preferably, in step one, the lower part of the bucket body has a conical structure design. The bucket body includes a wall panel and a double-layer detachable liner plate laid on the inner wall of the wall panel. The double-layer detachable liner plate is detachably connected to the wall panel by connecting bolts with a large and small head design. The double-layer detachable liner plate includes a first liner plate close to the wall panel and a second liner plate away from the wall panel. The first liner plate is a wear-resistant manganese steel liner plate, and the second liner plate is a polymer wear-resistant liner plate.

[0009] Preferably, in step two, the three-stage discharge hopper has an overall conical structure design and is equipped with an arc-shaped guide plate inside to prevent concrete segregation.

[0010] Preferably, in step three, the guide rail assembly includes guide rail fixing components, guide rails, and support components. The guide rail fixing components include horizontal fixing components, vertical fixing components, and longitudinal fixing components. Two support components are used to connect two diagonal supports on both sides of the steel structure support. Two horizontal fixing components are fixedly installed on the two support components and located on both sides of the three-stage discharge hopper, so that the first end of the horizontal fixing component extends out of the steel structure support. The servo motor is suspended on the extension section of one of the horizontal fixing components through a motor support. The servo motor is connected to the input end of the reducer, and the input end of the electric push rod is connected to the output end of the reducer. The two horizontal fixing components are connected through two... The longitudinal fixing members are connected so that two longitudinal fixing members are located on both sides of the three-stage discharge hopper; along the length of the transverse fixing members, multiple vertical fixing members are installed side by side on the transverse fixing members, so that the transverse fixing members are close to the first end of the vertical fixing members; a guide rail is installed below each transverse fixing member through the vertical fixing members, so that the guide rail is arranged side by side with the transverse fixing members and close to the second end of the vertical fixing members; the second ends of the two vertical fixing members near the two ends of the guide rail extend out of the guide rail, and guide rail connectors are installed on the extended sections to connect the corresponding two vertical fixing members on the two guide rails; buffer devices are installed near the two ends of the guide rails.

[0011] Preferably, in step four, the secondary distribution hopper has an overall conical structure design, with the outlet diameter of the secondary distribution hopper being smaller than that of the tertiary distribution hopper, and the inlet diameter of the secondary distribution hopper being larger than that of the tertiary distribution hopper. An arc-shaped guide plate is installed inside the secondary distribution hopper to prevent concrete segregation. Rollers are mounted on the secondary distribution hopper via connecting shafts, with four rollers installed in pairs on both sides of the secondary distribution hopper. The rollers on the secondary distribution hopper are placed on the guide rails of the electric drive switching mechanism, suspending the secondary distribution hopper between the two guide rails. The output end of the electric push rod is hinged to one of the connecting shafts on the secondary distribution hopper near the electric push rod.

[0012] Preferably, in step five, the sensor assembly includes a level sensor, an aggregate particle size detection sensor, and a temperature sensor for detecting aggregate level, aggregate particle size, and concrete temperature, respectively. The temperature sensor is installed inside the hopper and interlocked with the aggregate air-cooling system in the background of the mixing plant. The material gradation identification module receives and analyzes the data collected by the aggregate particle size detection sensor. The controller adjusts the operating parameters of the mixing plant according to the analysis results of the material gradation identification module. The human-machine interface terminal has the function of synchronous display and operation of the main control room and mobile APP.

[0013] Preferably, in step six, when the material to be discharged is secondary-grade concrete, the servo motor causes the electric push rod to move forward, and the secondary-grade discharge hopper slides below the tertiary-grade discharge hopper. At this time, the secondary-grade concrete enters the transport vehicle through the secondary-grade discharge hopper. When the material to be discharged is tertiary-grade concrete, the servo motor causes the electric push rod to move backward, and the secondary-grade discharge hopper slides to the side of the tertiary-grade hopper. At this time, the tertiary-grade concrete enters the transport vehicle through the tertiary-grade hopper. At this time, the secondary-grade discharge hopper can be used as a concrete slump detection device, and the concrete slump can be accurately identified by a high-frequency radar detection device that is pre-deployed on the ground.

[0014] Preferably, the hopper is equipped with an anti-segregation stirring device, one end of which extends out of the hopper and is connected to the output end of the rotating shaft. The input end of the rotating shaft is connected to an anti-segregation motor, which is placed on a support base. The support base is vertically fixed on a longitudinal fixing member.

[0015] Preferably, the secondary and tertiary discharge hoppers are equipped with auxiliary protection components, which include a discharge port anti-blocking vibrator and an automatic flushing device.

[0016] Preferably, the steel structure support is also equipped with a vehicle identification system. The vehicle identification system matches the vehicle information of the identified material transport vehicle with the concrete mix ratio of the main system of the mixing plant. If there is a mismatch, the vehicle identification system will automatically alarm.

[0017] In summary, by adopting the above technical solution, the present invention has at least the following beneficial effects: 1. This construction method achieves automatic switching of the discharge mode through an electric drive switching mechanism. It is highly applicable and efficient. It can not only meet the discharge of secondary and tertiary concrete, but also avoids the problems of low switching efficiency and high operation risk caused by manual switching, as well as the uneven discharge rate and aggregate segregation caused by the difficulty in accurately matching aggregate particle size due to manual adjustment, which leads to concrete quality problems. At the same time, it also avoids the problem of production interruption caused by switching, which affects the pouring progress. 2. The conical structure design at the bottom of the bucket optimizes the material flow and reduces the risk of blockage. The bucket adopts a wear-resistant steel structure design, with double-layer removable liners to prevent deformation of the discharge port caused by sand and gravel erosion. It is suitable for the material characteristics of high aggregate content in hydraulic concrete, which not only improves the service life of the bucket, but also facilitates future maintenance and replacement. The anti-segregation mixing device inside the bucket ensures that the concrete does not segregate when discharging or waiting for material, improving the quality of concrete. At the same time, it can also appropriately shorten the mixing cycle of the mixer and improve production efficiency. 3. Both the secondary and tertiary discharge hoppers are equipped with anti-clogging vibrators and automatic flushing devices. The anti-clogging vibrators can be activated at regular intervals to prevent material adhesion, and the automatic flushing device cleans the inner wall of the discharge port during the discharge switching interval, avoiding manual cleaning operations. 4. The human-machine interface terminal of the control system can not only be operated or viewed in real time in the main control room, but also be displayed and operated synchronously through a mobile APP. 5. During peak concrete production periods, when multiple batching plants simultaneously produce concrete with different gradations, the vehicle identification system avoids the risk of material trucks entering the wrong warehouse and loading the wrong materials, thus causing errors in concrete pouring. Attached Figure Description

[0018] Figure 1 A construction flow diagram of the electric concrete discharge hopper of a hydraulic cement concrete mixing plant, which is an exemplary embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the discharge state of the three-stage material distribution.

[0020] Figure 3 This is a schematic diagram of the secondary batching and discharge status.

[0021] Figure 4 This is a structural diagram showing the relative positions of the double-layer removable lining and the wall panel.

[0022] Figure 5 A schematic diagram showing the relative positions of the stirring device and the hopper to prevent segregation.

[0023] Figure 6 This is a schematic diagram of slump testing.

[0024] Figure 7 for Figure 2 Enlarged diagram of point A in the middle.

[0025] Figure 8 This is a schematic diagram showing the relative positions of the secondary discharge hopper and the guide rail.

[0026] The diagram shows the following labels: 1-hopper body, 101-wall panel, 102-first layer liner, 103-second layer liner, 2-steel structure support, 21-top frame, 22-support column, 23-diagonal support, 3-ground, 31-concrete pier, 4-connecting bolt, 41-screw, 42-nut, 5-secondary discharge hopper, 51-roller, 52-connecting shaft, 6-tertiary discharge hopper, 7-servo motor, 71-motor support, 8-electric push rod, 9-guide rail assembly, 91-guide rail fixing component, 911-lateral fixing component, 912-vertical fixing component, 913-longitudinal fixing component, 914-guide rail connector, 92-guide rail, 93-support component, 10-temperature sensor, 11-vehicle recognition system, 12-anti-segregation mixing device, 13-anti-segregation motor, 14-support base, 15-high frequency radar detection device. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so that the objectives, technical solutions, and advantages of the present invention will be clearer. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0028] In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. Example

[0029] This embodiment illustrates the construction method of the electric concrete discharge hopper in a hydraulic cement concrete mixing plant. Figure 1 The construction process flowchart is shown for reference. Figures 2-8 The construction method of the electric concrete discharge hopper for a hydraulic cement concrete mixing plant includes the following steps: Step 1: Install the bucket 1 on the steel structure support 2 fixedly installed on the ground 3. The bucket 1 adopts a wear-resistant steel structure design. The steel structure support 2 includes a top frame 21, support columns 22, and diagonal supports 23. The four support columns 22 are vertically arranged at the four corners of the top frame 21. One end of each support column 22 is connected to the bottom of the top frame 21 (fixed or detachable connection), and the other end is fixedly connected to the concrete pier 31 located on the ground 3. The diagonal supports 23 are arranged at the connection between the top frame 21 and the support columns 22. One end of the diagonal supports 23 is connected to the top frame 21, and the other end is connected to the support column 22. The diagonal supports 23 are used to increase the structural stability of the steel structure support 2. The bucket 1 is detachably connected to the top frame 21 of the steel structure support 2 and is located below the top frame 21. The lower part of the bucket 1 has a conical structure design. This design optimizes the material flow pattern and reduces the risk of material blockage. (Refer to...) Figure 4 The bucket body 1 includes a wall panel 101 and a double-layer removable liner plate laid on the inner wall of the wall panel 101. The double-layer removable liner plate is detachably connected to the wall panel 101 by connecting bolts 4. The double-layer removable liner plate includes a first liner plate 102 close to the wall panel 101 and a second liner plate 103 away from the wall panel 101. The first liner plate 102 is a wear-resistant manganese steel liner plate, and the second liner plate 103 is a polymer wear-resistant liner plate. The plate 103 has multiple corresponding connecting holes 1, 2, and 3. Connecting holes 1 and 2 have the same diameter. Connecting hole 3 has a funnel-shaped design; the lower part of connecting hole 3 is close to connecting hole 2 and has the same diameter, while the upper part of connecting hole 3 is away from connecting hole 2 and has a larger diameter than the lower part, increasing in size towards the upper part. The connecting bolt 4 includes a screw 41 and a nut 42. The screw 41 has a reducing head design. The diameter of the first end of the screw 41 is larger than that of the second end. The first end and the second end of the screw 41 are opposite to each other. The screw 41 includes a connecting section and a fixing section. The diameter of the connecting section is consistent with the diameter of the lower part of the connecting hole one, connecting hole two and connecting hole three. The cross section of the fixing section is an inverted isosceles trapezoid. The fixing section is adapted to the upper part of the connecting hole three. When the connecting bolt 4 is used to connect the double-layer detachable liner plate and the wall plate 101, the second end of the screw 41 is passed through the connecting hole three, connecting hole two and connecting hole one in sequence, and is tightened by the nut 42. The fixing section of the screw 41 is located in the upper part of the connecting hole three, and the outer wall of the fixing section is in contact with the hole wall of the upper part of the connecting hole three. The connecting section of the screw 41 is located in the lower part of the connecting hole three, connecting hole two and connecting hole one. The nut 42 is set close to the second end of the screw 41. The double-layer detachable liner plate is used to avoid deformation of the discharge port caused by sand and gravel erosion. It is adapted to the material characteristics of high aggregate content in hydraulic concrete. It not only improves the service life of the bucket body 1, but the detachable design also facilitates later replacement and maintenance. Step 2: Install the three-stage discharge hopper 6 of the dual-specification discharge port module below the hopper body 1. The three-stage discharge hopper 6 has an overall conical structure design and is a fixed hopper. The inlet diameter of the three-stage discharge hopper 6 is adapted to the outlet diameter of the hopper body 1. The inlet of the three-stage discharge hopper 6 and the outlet of the hopper body 1 are detachably connected. The outlet diameter of the three-stage discharge hopper 6 is 50-80cm (in this embodiment, a three-stage discharge hopper with an outlet diameter of 60cm is selected to adapt to aggregates with a maximum particle size of 8cm). An arc-shaped guide plate is installed inside the three-stage discharge hopper 6 to prevent concrete segregation. Step 3: Install the electric drive switching mechanism on the steel structure support 2. The electric drive switching mechanism includes a servo motor 7, an electric push rod 8, a guide rail assembly 9, a reducer, and a buffer device (not shown in the figure). The guide rail assembly 9 is made of steel and includes a guide rail fixing component 91, a guide rail 92, and a support component 93. The guide rail fixing component 91 is fixedly installed on the steel structure support 2 via the support component 93. The guide rail 92 is the sliding track of the secondary discharge hopper 5 and is fixedly installed on the guide rail fixing component 91. The guide rail fixing component 91 includes a horizontal fixing component 911, a vertical fixing component 912, and a longitudinal fixing component 913. Install the two support components 93 on the steel structure support 2 respectively. Between the two support columns 22 on both sides of the support frame 2, the support member 93 connects the two diagonal supports 23 between the two support columns 22; the two transverse fixing members 911 are fixedly installed on the two support members 93 and located on both sides of the three-stage discharge hopper 6, so that the first end of one of the transverse fixing members 911 extends out of the steel structure support 2, and the servo motor 7 is suspended on the transverse fixing member 911 whose first end extends out of the steel structure support 2 through the motor support 71, and close to the first end of the transverse fixing member 911 (or the first ends of both transverse fixing members 911 can extend out of the steel structure support 2, and the servo motor 7 can be suspended on one of the transverse fixing members 911). The servo motor 7 is connected to the input end of the reducer, and the input end of the electric push rod 8 is connected to the output end of the reducer. Two transverse fixing members 911 are connected via two longitudinal fixing members 913, with the two longitudinal fixing members 913 positioned on both sides of the three-stage discharge hopper 6. The two ends of the longitudinal fixing members 913 are fixedly connected to the sides of the two transverse fixing members 911 that are close to each other (the longitudinal fixing members 913 can also be fixedly installed on the top of the transverse fixing members 911). Along the length of the transverse fixing members 911, multiple vertical fixing members 912 are installed side-by-side on the transverse fixing members 911, so that the transverse fixing members 911 and the vertical fixing members 912 are fixedly connected and close to each other. The first end and the second end of the vertical fixing member 912 extend towards the ground 3, with the first end and the second end of the vertical fixing member 912 facing each other; a guide rail 92 is installed below each of the horizontal fixing members 911 via the vertical fixing member 912, so that the guide rail 92 and the horizontal fixing member 911 are arranged side by side, the guide rail 92 is fixedly connected to the vertical fixing member 912 and is close to the second end of the vertical fixing member 912, so that the second ends of the two vertical fixing members 912 near the two ends of the guide rail 92 extend out of the guide rail 92, and a guide rail connector 914 is installed on the extended section, so that the guide rail connector 914 connects the two vertical fixing members 912 on the two guide rails 92 respectively;The buffer device is installed near both ends of the guide rail 92. The buffer device is used to buffer the sliding secondary discharge hopper 5 and to limit the secondary discharge hopper 5, so as to ensure that the secondary discharge hopper 5 can move smoothly and accurately to the preset position. In practical applications, while maintaining structural stability, only one of the aforementioned support members 93 can be installed. In this case, the second end of the transverse fixing member 911 only needs to extend out of the three-stage distribution hopper 6, so that the two longitudinal fixing members 913 are still located on both sides of the three-stage distribution hopper 6, and the first and second ends of the transverse fixing member 911 are opposite to each other. To improve structural stability, the transverse fixing member 911 can also be connected to the outer wall of the three-stage distribution hopper 6 and close to the discharge port of the three-stage distribution hopper 6. Step four: Install the sliding secondary distribution hopper 5 with dual-specification discharge port module onto the electric drive switching mechanism; the secondary distribution hopper 5 has an overall conical structure design, the discharge port diameter of the secondary distribution hopper 5 is smaller than the discharge port diameter of the tertiary distribution hopper 6, the inlet diameter of the secondary distribution hopper 5 is larger than the discharge port diameter of the tertiary distribution hopper 6, and the discharge port diameter of the secondary distribution hopper 5 is 20-30cm (in this embodiment, a secondary distribution hopper with a discharge port diameter of 25cm is selected, suitable for aggregates with a maximum particle size of 4cm). The secondary distribution hopper 5 is equipped with an arc-shaped guide plate to prevent concrete segregation; the secondary... Rollers 51 are installed on the gradation hopper 5. The four rollers 51 are installed in pairs on both sides of the secondary gradation hopper 5, and the rollers 51 are connected to the secondary gradation hopper 5 through connecting shafts 52. One end of the connecting shaft 52 is fixedly connected to the secondary gradation hopper 5, and the other end of the connecting shaft 52 passes through the rollers 51 and is rotatably connected to the rollers 51. The rollers 51 on the secondary gradation hopper 5 are placed on the guide rails 92 of the electric drive switching mechanism, so that the secondary gradation hopper 5 is suspended between the two guide rails 92. The output end of the electric push rod 8 is hinged to one of the connecting shafts 52 on the secondary gradation hopper 5 near the electric push rod 8. Step 5: Concrete preparation. During the preparation process, the aggregate is monitored, analyzed, and adjusted by a control system. This control system includes sensor components, a material gradation identification module, a controller, and a human-machine interface terminal. The sensor components include a level sensor, an aggregate particle size detection sensor, and a temperature sensor. The level sensor is used to detect the level of various aggregates in the mixing plant in real time, ensuring sufficient aggregate in the silos and preventing production interruptions due to insufficient aggregate. The aggregate particle size detection sensor is used to detect the particle size of the aggregate in real time, ensuring the concrete gradation meets requirements. The temperature sensor is installed inside the hopper 1 to detect the temperature in real time. The concrete temperature inside the unit is controlled by a temperature sensor interlocked with the aggregate air-cooling system at the back end of the batching plant. Based on the required concrete pouring temperature and the temperature difference at the outlet, the system automatically calculates the air-cooling capacity, water addition, and cooling water volume, and uploads the calculated data to the controller of the control system to ensure the concrete temperature requirements are met. The material gradation identification module receives and analyzes the data collected by the aggregate particle size detection sensor. The controller adjusts the operating parameters of the batching plant based on the analysis results of the material gradation identification module. The human-machine interface terminal not only allows operation or real-time viewing of relevant data in the main control room, but also allows simultaneous display and operation via a mobile APP. Step six: Based on the prepared concrete gradation, the electric drive switching mechanism automatically switches the secondary gradation discharge hopper 5 to a position below or to the side of the tertiary gradation discharge hopper 6 for discharge. The forward and reverse rotation of the servo motor 92 provides power for the electric push rod 8 to move forward and backward. A reducer lowers the power of the servo motor 92, thereby reducing the linear speed of the electric push rod 8. The secondary gradation discharge hopper 5 slides on the guide rail 92 due to the movement of the electric push rod 8. When the discharged material is secondary gradation concrete, the servo motor 92 causes the electric push rod 8 to move forward (i.e., move away from the servo motor 92), and the secondary gradation discharge hopper 5 slides below the tertiary gradation discharge hopper 6. At this point, the secondary gradation... Concrete enters the transport vehicle through the secondary batching hopper 5; when the discharged material is tertiary batched concrete, the servo motor 92 causes the electric push rod 8 to retract (i.e., move towards the servo motor 92), and the secondary batching hopper 5 slides to the side of the tertiary batching hopper 6. At this time, the tertiary batched concrete enters the transport vehicle through the tertiary batching hopper 6. At this time, the secondary batching hopper 5 can be used as a concrete slump detection device. Before sliding, the secondary batching hopper 5 is filled with one bucket of concrete. After sliding to the side of the tertiary batching hopper 6, the outlet plate of the secondary batching hopper 5 is opened, and the concrete slump is accurately identified by the high-frequency radar detection device 15 that is pre-deployed on the ground 3. In one preferred embodiment, an anti-segregation stirring device 12 is installed inside the hopper 1. One end of the anti-segregation stirring device 12 extends out of the hopper 1 and is connected to the output end of a rotating shaft (not shown in the figure). The input end of the rotating shaft is connected to an anti-segregation motor 13, which provides power for the rotation of the anti-segregation stirring device 12. The anti-segregation motor 13 is placed on a support base 14, which is vertically fixed on a longitudinal fixing member 913. In actual use, a [unclear - possibly a specific type of motor] can also be installed on each side of the support base 14. An inclined support member is provided to form a stable triangular structure with the transverse fixing member 911 and the support base 14. The first end of the inclined support member is fixedly connected to the longitudinal fixing member 913 and is close to the transverse fixing member 911. The second end of the inclined support member is fixedly connected to the support base 14 and is close to the anti-segregation motor 13. The first end and the second end of the inclined support member are opposite to each other. The anti-segregation mixing device 12 is used to ensure that the concrete does not segregate when it is being discharged or waiting for material, thereby improving the quality of the concrete. At the same time, it can also appropriately shorten the mixing cycle of the mixer and improve production efficiency. In one preferred embodiment, the secondary discharge hopper 5 and the tertiary discharge hopper 6 are equipped with auxiliary protection components. The auxiliary protection components include a discharge port anti-blocking vibrator and an automatic flushing device. The discharge port anti-blocking vibrator is used to prevent material from sticking and has a timed start function. The automatic flushing device cleans the inner wall of the discharge port during the discharge switching interval to avoid manual cleaning. In practical application, the steel structure support 2 is also equipped with a vehicle identification system 11. The vehicle identification system 11 is used to identify the vehicle information of the material transport vehicle and match the vehicle information with the concrete mix ratio of the main system of the batching plant. This identifies whether the incoming vehicle matches the concrete mix ratio of the current batch. If there is a mismatch, the vehicle identification system 11 will automatically alarm. This avoids the risk of incorrect concrete pouring caused by the material transport vehicle entering the wrong warehouse and loading the wrong material during peak concrete production periods when multiple batching plants are producing concrete with different mix ratios at the same time.

[0030] The above description is merely a detailed illustration of specific embodiments of the present invention and is not intended to limit the invention. Various substitutions, modifications, and improvements made by those skilled in the art without departing from the principles and scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A construction method for an electric concrete discharge hopper in a hydraulic cement concrete mixing plant, characterized in that, Includes the following steps: Step 1: Install the bucket body (1) on the steel structure support (2) fixed on the ground (3). The bucket body (1) adopts a wear-resistant steel structure design. Step 2: Install the three-stage distribution hopper (6) of the dual-specification discharge port module below the hopper body (1); Step 3: Install the electric drive switching mechanism on the steel structure support (2). The electric drive switching mechanism includes a servo motor (7), an electric push rod (8), a guide rail assembly (9), a reducer, and a buffer device. Step 4: Install the sliding secondary distribution hopper (5) of the dual-specification discharge port module onto the electric drive switching mechanism; Step 5: Concrete preparation. During the preparation process, the aggregate is monitored, analyzed, and adjusted by the control system, which includes sensor components, a material gradation identification module, a controller, and a human-machine interface terminal. Step 6: Based on the prepared concrete gradation, the electric drive switching mechanism automatically switches the secondary gradation discharge hopper (5) to the lower or side position of the tertiary gradation discharge hopper (6) for material discharge.

2. The construction method of the electric concrete discharge hopper of the hydraulic cement concrete mixing plant according to claim 1, characterized in that, In step one, the lower part of the bucket body (1) is designed with a conical structure. The bucket body (1) includes a wall panel (101) and a double-layer detachable liner plate laid on the inner wall of the wall panel (101). The double-layer detachable liner plate is detachably connected to the wall panel (101) by connecting bolts (4). The connecting bolts (4) adopt a large and small head design. The double-layer detachable liner plate includes a first liner plate (102) close to the wall panel (101) and a second liner plate (103) away from the wall panel (101). The first liner plate (102) is a wear-resistant manganese steel liner plate, and the second liner plate (103) is a polymer wear-resistant liner plate.

3. The construction method of the electric concrete discharge hopper of the hydraulic cement concrete mixing plant according to claim 1, characterized in that, In step two, the three-stage discharge hopper (6) is designed as a cone structure and is equipped with an arc-shaped guide plate inside to prevent concrete segregation.

4. The construction method of the electric concrete discharge hopper of the hydraulic cement concrete mixing plant according to claim 1, characterized in that, In step three, the guide rail assembly (9) includes a guide rail fixing component (91), a guide rail (92), and a support component (93). The guide rail fixing component (91) includes a horizontal fixing component (911), a vertical fixing component (912), and a longitudinal fixing component (913). Two support components (93) are used to connect the two diagonal supports (23) on both sides of the steel structure bracket (2). The two horizontal fixing components (911) are fixedly installed on the two support components (93) and located on both sides of the three-stage discharge hopper (6). The first end of the horizontal fixing component (911) extends out of the steel structure bracket (2). The servo motor (7) is suspended on the extension section of a horizontal fixing component (911) through the motor support (71). The servo motor (7) is connected to the input end of the reducer. The input end of the electric push rod (8) is connected to the output end of the reducer. The two horizontal fixing components (911) are connected to the two longitudinal fixing components (913). The two longitudinal fixing members (913) are connected so that they are located on both sides of the three-stage discharge hopper (6); along the length direction of the transverse fixing member (911), multiple vertical fixing members (912) are installed side by side on the transverse fixing member (911) so that the transverse fixing member (911) is close to the first end of the vertical fixing member (912); a guide rail (92) is installed below each transverse fixing member (911) through the vertical fixing member (912) so that the guide rail (92) is arranged side by side with the transverse fixing member (911) and close to the second end of the vertical fixing member (912), so that the second ends of the two vertical fixing members (912) close to the two ends of the guide rail (92) extend out of the guide rail (92), and a guide rail connector (914) is installed on the extended section so that the guide rail connector (914) connects the two vertical fixing members (912) on the two guide rails (92); a buffer device is installed near the two ends of the guide rail (92).

5. The construction method of the electric concrete discharge hopper of the hydraulic cement concrete mixing plant according to claim 4, characterized in that, In step four, the secondary distribution hopper (5) is designed as a conical structure. The discharge port diameter of the secondary distribution hopper (5) is smaller than that of the tertiary distribution hopper (6), and the inlet diameter of the secondary distribution hopper (5) is larger than that of the tertiary distribution hopper (6). An arc-shaped guide plate for preventing concrete segregation is installed inside the secondary distribution hopper (5). Rollers (51) are installed on the secondary distribution hopper (5) through a connecting shaft (52), so that the four rollers (51) are installed on both sides of the secondary distribution hopper (5). The rollers (51) on the secondary distribution hopper (5) are placed on the guide rail (92) of the electric drive switching mechanism, so that the secondary distribution hopper (5) is suspended between the two guide rails (92). The output end of the electric push rod (8) is hinged to one of the connecting shafts (52) on the secondary distribution hopper (5) near the electric push rod (8).

6. The construction method of the electric concrete discharge hopper of the hydraulic cement concrete mixing plant according to claim 1, characterized in that, In step five, the sensor assembly includes a level sensor, an aggregate particle size detection sensor, and a temperature sensor for detecting aggregate level, aggregate particle size, and concrete temperature, respectively. The temperature sensor is installed inside the hopper (1) and interlocked with the background aggregate air cooling system of the mixing plant. The material gradation identification module receives and analyzes the data collected by the aggregate particle size detection sensor. The controller adjusts the operating parameters of the mixing plant according to the analysis results of the material gradation identification module. The human-machine interaction terminal has the function of synchronous display and operation of the main control room and mobile APP.

7. The construction method of the electric concrete discharge hopper of the hydraulic cement concrete mixing plant according to claim 5, characterized in that, In step six, when the material to be discharged is secondary-grade concrete, the servo motor (92) causes the electric push rod (8) to move forward, and the secondary-grade discharge hopper (5) slides to the bottom of the tertiary-grade discharge hopper (6). At this time, the secondary-grade concrete enters the transport vehicle through the secondary-grade discharge hopper (5). When the material to be discharged is tertiary-grade concrete, the servo motor (92) causes the electric push rod (8) to move backward, and the secondary-grade discharge hopper (5) slides to the side of the tertiary-grade discharge hopper (6). At this time, the tertiary-grade concrete enters the transport vehicle through the tertiary-grade discharge hopper (6). At this time, the secondary-grade discharge hopper (5) can be used as a concrete slump detection device. The concrete slump can be accurately identified by a high-frequency radar detection device (15) that is pre-deployed on the ground (3).

8. The construction method of the electric concrete discharge hopper of the hydraulic cement concrete mixing plant according to claim 4, characterized in that, An anti-segregation stirring device (12) is installed inside the bucket body (1). One end of the anti-segregation stirring device (12) extends out of the bucket body (1) and is connected to the output end of the rotating shaft. An anti-segregation motor (13) is connected to the input end of the rotating shaft. The anti-segregation motor (13) is placed on the support base (14), and the support base (14) is vertically fixed on a longitudinal fixing member (913).

9. The construction method of the electric concrete discharge hopper of the hydraulic cement concrete mixing plant according to claim 1, characterized in that, The secondary discharge hopper (5) and the tertiary discharge hopper (6) are equipped with auxiliary protection components, which include a discharge port anti-blocking vibrator and an automatic flushing device.

10. The construction method of the electric concrete discharge hopper of the hydraulic cement concrete mixing plant according to any one of claims 1-9, characterized in that, The steel structure support (2) is also equipped with a vehicle identification system (11). The vehicle identification system (11) matches the vehicle information of the identified material transport vehicle with the concrete mix ratio of the mixing plant host system. If there is a mismatch, the vehicle identification system (11) will automatically alarm.

Images