Intelligent reverse sampling device of concrete mixer truck with excess material recycling function

Abstract

The present application relates to the technical field of concrete sampling, and particularly relates to an intelligent reverse sampling device for a concrete mixer truck with excess material recycling function, which comprises a base, a material receiving unit for guiding and recycling excess material of concrete arranged on the top of the base, and a quantitative sampling unit suitable for different sample quantities, the material receiving unit comprises a mounting frame fixedly connected to the top of the base, and a material receiving hopper fixedly installed on the mounting frame, and the quantitative sampling unit comprises a sampling trolley arranged on the top of the base, a fixed rod fixedly installed on one side of the top of the sampling trolley, and a quantitative hopper rotatably installed on the fixed rod; the present application first adjusts the height of the triangular overflow block through the linkage of the electric push rod to adapt to accurate quantitative sampling of different sampling quantities and efficient recycling of corresponding excess material, so as to avoid material waste and sampling deviation, then moves the vibrating flat material to improve the efficiency of excess material recycling and complete full overflow recycling of the excess material, and finally cooperates with the mixing structure to prevent concrete from being deposited due to vibration.

Description

Technical Field

[0001] This invention relates to the field of concrete sampling technology, and in particular to an intelligent reverse sampling device for concrete mixer trucks with residual material recovery function. Background Technology

[0002] Testing the physical and mechanical properties of ready-mixed concrete is a core aspect of engineering quality control. Sampling and test block preparation must strictly adhere to industry standards to ensure that test results objectively reflect the actual quality of the concrete. Currently, most ready-mixed concrete plants use the traditional method of placing the mixer at a high location. After the concrete is mixed evenly, it is directly unloaded from the high discharge port onto the mixer truck for transportation. The corresponding sampling methods are mainly to collect the material at the high discharge port or to take samples from the location where the mixer truck is parked on the ground floor.

[0003] This type of sampling method relies on manual operation and lacks a systematic quantitative control and intelligent management mechanism. It cannot achieve quantitative control of the sampling process and is difficult to link with relevant management systems, resulting in insufficient consistency of sampling volume and low degree of automation in management processes. It cannot meet the technical requirements of concrete test block testing for sampling standardization and intelligent management.

[0004] To address the aforementioned technical deficiencies, a solution is proposed. First, the height of the triangular overflow block is adjusted via an electric push rod to accommodate precise quantitative sampling of different sample volumes and efficient recovery of corresponding residual materials, avoiding material waste and sampling deviations. Then, a moving vibrating material leveling device is used to improve the efficiency of residual material recovery and ensure full overflow recovery of residual materials. Finally, a mixing structure is used to prevent concrete from separating from water and settling due to vibration, ensuring the homogeneity of the concrete and the accuracy of subsequent test results. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent reverse sampling device for concrete mixer trucks with residual material recovery function, in order to solve the aforementioned technical defects.

[0006] The objective of this invention can be achieved through the following technical solution: an intelligent reverse sampling device for concrete mixer trucks with residual material recovery function, comprising a base, a receiving unit for guiding concrete and recovering residual material on the top of the base, and a quantitative sampling unit suitable for different sample quantities. The receiving unit includes a mounting frame fixedly connected to the top of the base, and a receiving hopper is fixedly installed on the mounting frame. The quantitative sampling unit includes a sampling trolley located on the top of the base, a fixing rod fixedly installed on one side of the top of the sampling trolley, and a quantitative hopper rotatably installed on the fixing rod. An electric push rod is installed between the quantitative hopper and the sampling trolley.

[0007] Preferably, a collection box is movably placed at the bottom of the base, a waste material collection hopper is fixedly connected to one side of the mounting frame, and a waste material pipe extending into the collection box is fixedly connected to the bottom of the waste material collection hopper.

[0008] Preferably, a water spray pipe is fixedly connected to the top of the receiving hopper, and multiple nozzles for cleaning the receiving hopper are installed on the water spray pipe. A gantry cleaning machine is installed on the top of the base and on one side of the mounting frame.

[0009] Preferably, a triangular overflow block is provided on one side of the quantitative hopper, an auxiliary crossbeam is rotatably connected to the fixed rod, and linkage rods are symmetrically fixedly connected to both sides of the free end of the auxiliary crossbeam. A linkage plate corresponding to the linkage rod is slidably connected to the bottom of the triangular overflow block. The electric push rod is hinged between the auxiliary crossbeam and the sampling trolley. A support beam that abuts against the bottom of the quantitative hopper is fixedly connected to the top of the sampling trolley.

[0010] Preferably, L-shaped plates are symmetrically fixedly connected to both sides of the quantitative hopper, a limiting slider is fixedly connected to the triangular overflow block and slidably connected to the corresponding L-shaped plate, and a spring is fixedly installed between the bottom of the limiting slider and the L-shaped plate. A comb-shaped flow limiting plate that abuts against the inclined surface of the triangular overflow block is fixedly connected inside the quantitative hopper.

[0011] Preferably, the top of the quantitative hopper is provided with a movable frame, and a movable plate is slidably installed on the movable frame. Multiple vibrating rods are installed at the bottom of the movable plate. Both sides of the quantitative hopper are fixedly connected with sliding rods that are slidably connected to the movable frame. A lead screw that is threadedly connected to the movable frame is rotatably installed on the quantitative hopper, and a motor that drives the lead screw to rotate is installed by bolts.

[0012] Preferably, a plurality of stirring rods are rotatably connected to the movable plate, and a plurality of vibrating rods are located between two adjacent sets of stirring rods. A second bevel gear is fixedly connected to the stirring rod, and a spline shaft is rotatably mounted on the top of the movable plate, and a first bevel gear that meshes with the corresponding second bevel gear is fixedly connected to the spline shaft.

[0013] Preferably, the movable frame is rotatably connected to two sets of bushings that are slidably connected to the spline shaft, and spur gears are fixedly installed on the bushings. Both sides of the quantitative hopper are equipped with toothed plates that mesh with the corresponding spur gears.

[0014] Preferably, both ends of the movable plate are rotatably mounted with abutting rollers, and both sets of toothed plates are fixedly mounted with wave guide plates, and the wave side of the wave guide plate rolls and abuts against the corresponding abutting roller, and the wave protrusions of the two sets of wave guide plates are staggered.

[0015] The beneficial effects of this invention are as follows: (1) This invention uses an electric push rod to drive the auxiliary beam to deflect, and the triangular overflow block is linked to adjust the height. The quantitative structure is achieved by the barrel theory of three sides being high and one side being low, which can adapt to different sampling requirements. At the same time, the cooperation of the limiting slider and the spring ensures the horizontal stability of the quantitative hopper during the height adjustment of the triangular overflow block. Excess concrete automatically overflows to the residual material collection hopper through the triangular overflow block, and is accurately guided into the collection box through the residual material pipe to complete the recycling. After the residual material is recycled, the triangular overflow block can rise and contact the comb flow limiting plate to avoid the overflow of quantitative concrete when the sampling trolley moves, and the overflow concrete adhering to the triangular overflow block falls everywhere. This not only achieves accurate quantitative sampling of different sampling amounts, but also completes the efficient recycling of residual materials, avoids material waste and reduction, and ensures the accuracy of the sampling amount.

[0016] (2) This invention addresses the problems of low efficiency and insufficient overflow of residual material in self-leveling: the moving frame is driven to move back and forth by the screw, so that the vibrator can vibrate and level the material in a large range in the quantitative hopper, which can accelerate the overflow speed of residual material and improve the efficiency of residual material recycling; at the same time, during the movement of the moving frame, the spur gear and the toothed plate mesh to drive the spline shaft to rotate, and the stirring rod is driven to rotate through the bevel gear transmission, so as to stir the vibrating concrete at low speed, effectively avoiding the phenomenon of concrete separation and sedimentation caused by vibration; with the action of the wave guide plate and the abutment roller, the moving plate moves back and forth in different directions twice, so that the stirring area and the vibration area are effectively overlapped, further ensuring the homogeneity of concrete, preventing excessive separation water from being discharged as residual material, and avoiding affecting the quality test results of subsequent concrete test blocks after solidification. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings; Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the material receiving unit of the present invention; Figure 3 This is a schematic diagram of the structure of the quantitative sampling unit of the present invention; Figure 4 This is a schematic diagram of the installation of the quantitative hopper of the present invention; Figure 5 This is a schematic diagram of the installation of the auxiliary support beam of the present invention; Figure 6 This is an assembly diagram of the quantitative hopper, triangular overflow block and movable frame of the present invention; Figure 7 This is a schematic diagram showing the disassembled quantitative hopper, triangular overflow block, and movable frame of the present invention; Figure 8 This is a schematic diagram showing the disassembly of the movable frame and the movable plate of the present invention; Figure 9 This is a schematic diagram of the cooperation between the triangular overflow block and the auxiliary support beam of the present invention; Figure 10 This is a schematic diagram illustrating the combination of the present invention and a mixer truck.

[0018] Legend: 1. Base; 11. Gantry cleaning machine; 2. Receiving unit; 21. Mounting frame; 22. Receiving hopper; 23. Collection box; 24. Waste material collection hopper; 3. Quantitative sampling unit; 31. Sampling trolley; 32. Fixed rod; 33. Quantitative hopper; 34. Electric push rod; 35. Triangular overflow block; 36. Auxiliary crossbeam; 37. Linkage rod; 38. Linkage plate; 39. Support beam; 310. L-shaped plate; 311. Limiting slider; 312. Spring; 313. Comb flow limiting plate; 4. Moving frame; 41. Moving plate; 42. Vibrator; 43. Stirring rod; 44. Bevel gear II; 45. Splined shaft; 46. Bevel gear I; 47. Bushing; 48. Spur gear; 49. Gear plate; 410. Abutting roller; 411. Wave guide plate. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1-7 , Figure 9 and Figure 10 As shown, the following solutions can be used to address the problems of insufficient sampling consistency and low automation of management processes, which are caused by the inability to quantitatively control the sampling process and the difficulty in linking with relevant management systems. In this embodiment, the intelligent reverse sampling device for concrete mixer truck with residual material recovery function includes a base 1. The top of the base 1 is provided with a receiving unit 2 for guiding concrete material and recovering residual material, and a quantitative sampling unit 3 suitable for different sample quantities. The receiving unit 2 includes a mounting frame 21 fixedly connected to the top of the base 1, and a receiving hopper 22 is fixedly installed on the mounting frame 21. The sampling signal is sent to the mixer truck driver through the external concrete test block management system. The mixer truck driver stops the mixer truck at the designated position and unloads the material by reversing the mixer truck at the lowest speed. The quantitative sampling unit 3 includes a sampling trolley 31 located on the top of the base 1. A fixing rod 32 is fixedly installed on one side of the top of the sampling trolley 31, and a quantitative hopper 33 is rotatably installed on the fixing rod 32. The sampling trolley 31 moves to a designated position below the receiving hopper 22, and the concrete in the receiving hopper 22 is filled into the quantitative hopper 33 on the sampling trolley 31. An electric push rod 34 is installed between the quantitative hopper 33 and the sampling trolley 31. When designing the concrete test block management system, the performance indicators of the mixer truck are input into the software system to calculate the time for each reverse sampling. A sound control device is set on the receiving hopper 22 for alarm. The calculation starts from the start of the reverse unloading by the mixer truck driver until the end of the reverse sampling time. The control system prompts an alarm message, notifies the driver to stop the reverse, and the mixer truck leaves the sampling position to ensure that the unloading amount is basically consistent each time it reverses.

[0021] A collection box 23 is movably placed at the bottom of the base 1. A residual material collection hopper 24 is fixedly connected to one side of the mounting frame 21, and a residual material pipe extending into the collection box 23 is fixedly connected to the bottom of the residual material collection hopper 24. The residual material collection hopper 24, the residual material pipe and the collection box 23 are used to collect the residual material overflowing from the quantitative hopper 33.

[0022] A water spray pipe is fixedly connected to the top of the receiving hopper 22, and multiple nozzles for cleaning the receiving hopper 22 are installed on the water spray pipe. After the sampling trolley 31 moves away from under the receiving hopper 22, the cleaning water is injected into the water spray pipe and then sprayed out from multiple nozzles to clean the inside of the receiving hopper 22. A gantry cleaning machine 11 is installed on the top of the base 1 and on one side of the mounting frame 21. After unloading is completed, the sampling trolley 31 returns to the cleaning area of ​​the gantry cleaning machine 11.

[0023] A triangular overflow block 35 is provided on one side of the quantitative hopper 33. The triangular overflow block 35 is located at the top of one side of the residual material collection hopper 24. When the residual concrete overflows down through the triangular overflow block 35, it can smoothly enter the residual material collection hopper 24. By adopting the barrel theory of three sides high and one side low through the quantitative hopper 33 and the triangular overflow block 35, when the concrete reaches the low side position, the amount of concrete in the quantitative hopper 33 is the sampling amount. The excess concrete automatically overflows into the residual material collection hopper 24 through the lower triangular overflow block 35, and is then collected in the residual material collection box 23 through the residual material pipe. An auxiliary crossbeam 36 is rotatably connected to the fixed rod 32, and linkage rods 37 are symmetrically fixedly connected to both sides of the free end of the auxiliary crossbeam 36. A linkage plate 38 corresponding to the linkage rod 37 is fixedly connected to the bottom of the triangular overflow block 35. The linkage rod 37 and the linkage plate 38 are slidably connected to avoid the limitation of the horizontal position of the triangular overflow block 35, which would interfere with the deflection of the auxiliary crossbeam 36. An electric push rod 34 is hinged between the auxiliary crossbeam 36 and the sampling trolley 31. A support beam 39 that abuts against the bottom of the quantitative hopper 33 is fixedly connected to the top of the sampling trolley 31. The support beam 39 is used to cooperate with the fixed rod 32 to provide stable horizontal support for the quantitative hopper 33, thereby ensuring the accuracy of quantitative sampling. The retraction of the movable rod of the electric push rod 34 causes the auxiliary crossbeam 36 to deflect downwards. The linkage rod 37 on the auxiliary crossbeam 36, in conjunction with the linkage plate 38, drives the triangular overflow block 35 to descend until the triangular overflow block 35 reaches the designated height. The electric push rod 34 then stops. Meanwhile, the support beam 39 limits the downward deflection of the quantitative hopper 33 and adjusts the height of the triangular overflow block 35 to accommodate different quantitative sampling requirements. After quantitative sampling is completed, the sampling trolley 31 transfers the quantitative hopper 33 to the filling station. The movable rod of its electric push rod 34 extends further, causing the quantitative hopper 33 to deflect upwards around the fixed rod 32, so that all the concrete is unloaded into the external filling device.

[0024] The quantitative hopper 33 is symmetrically fixedly connected to both sides of L-shaped plates 310. The triangular overflow block 35 is fixedly connected to a limiting slider 311 that is slidably connected to the corresponding L-shaped plate 310. The L-shaped plate 310 and the limiting slider 311 are used to realize that the triangular overflow block 35 can only move up and down. A spring 312 is fixedly installed between the bottom of the limiting slider 311 and the L-shaped plate 310. During the descent of the triangular overflow block 35, the springs 312 at the bottom of the limiting sliders 311 on both sides of the triangular overflow block 35 are used to further increase the stability of the quantitative hopper 33 when it is placed horizontally. The quantitative hopper 33 is internally fixedly connected to a comb-shaped flow restrictor 313 that abuts against the inclined surface of the triangular overflow block 35. After the residual material overflows and is recovered, the movable rod of the electric push rod 34 extends and moves, causing the triangular overflow block 35 to rise. This causes the inclined surface of the triangular overflow block 35 to abut against the comb side of the comb-shaped flow restrictor 313, meaning the top height of the triangular overflow block 35 is higher than the height of the concrete liquid surface. The electric push rod 34 is then stopped to prevent partial overflow of the quantitative concrete in the quantitative hopper 33 during the movement of the sampling trolley 31, which would lead to sampling deviation. At the same time, it also prevents the adhering concrete on the inclined surface of the triangular overflow block 35 from falling off in various places.

[0025] Example 2: Please refer to Figures 6-8 As shown, the following solutions can be used to address the problems of low efficiency and insufficient overflow of self-leveling of surplus materials. In this embodiment, a movable frame 4 is provided on the top of the quantitative hopper 33, and a movable plate 41 is slidably installed on the movable frame 4. Multiple vibrating rods 42 are installed at the bottom of the movable plate 41. Slide rods that are slidably connected to the movable frame 4 are fixedly connected to both sides of the quantitative hopper 33. A screw rod that is threadedly connected to the movable frame 4 is rotatably installed on the quantitative hopper 33, and a motor that drives the screw rod to rotate is installed by bolts. During the overflow process of concrete filling the quantitative hopper 33, the motor drives the lead screw to rotate in both directions. The lead screw, together with two sets of sliding rods, drives the moving frame 4 to move at the top of the quantitative hopper 33. The moving frame 4 carries multiple vibrating rods 42 that extend into the quantitative hopper 33 and moves synchronously. The vibrating rods 42 are energized and vibrate to vibrate and level the concrete falling into the quantitative hopper 33, thereby accelerating the overflow and recovery speed of the excess material and assisting in the full overflow and recovery of the excess material.

[0026] Multiple stirring rods 43 are rotatably connected to the moving plate 41, and multiple vibrating rods 42 are located between two adjacent sets of stirring rods 43. While the moving plate 41 drives the vibrating rods 42 to move along the length of the quantitative hopper 33, it simultaneously drives multiple stirring rods 43 to move. A second bevel gear 44 is fixedly connected to the stirring rod 43. A spline shaft 45 is rotatably mounted on the top of the moving plate 41, and a first bevel gear 46 that meshes with the corresponding second bevel gear 44 is fixedly connected to the spline shaft 45. The spline shaft 45 rotates, and the meshing bevel gear 1 46 and bevel gear 2 44 drive multiple stirring rods 43 to rotate, continuously mixing the vibrating concrete in the quantitative hopper 33 at a low speed. This prevents the concrete from separating and settling due to vibration, which would cause excessive loss of separated water during the residual material recovery process, leading to deviations in the quality test results after the concrete test blocks have solidified.

[0027] Two sets of bushings 47 are rotatably connected to the movable frame 4 and slidably connected to the spline shaft 45. The matching bushings 47 prevent interference with the axial movement of the spline shaft 45. A spur gear 48 is fixedly installed on the bushing 47. Both sides of the metering hopper 33 are equipped with toothed plates 49 that mesh with the corresponding spur gear 48. The horizontal movement of the movable frame 4 carrying the spur gear 48, combined with the meshing of the spur gear 48 and the toothed plates 49, causes the spur gear 48 to drive the spline shaft 45 to rotate synchronously.

[0028] Both ends of the moving plate 41 are rotatably equipped with abutting rollers 410, and both sets of toothed plates 49 are fixedly equipped with wave guide plates 411. The wave side of the wave guide plate 411 rolls and abuts against the corresponding abutting roller 410. The wave protrusions of the two sets of wave guide plates 411 are staggered. The moving frame 4 moves horizontally along the length of the quantitative hopper 33. When the abutting rollers 410 on both sides of the moving plate 41 move between the two sets of wave guide plates 411, the wave protrusions and concaves on the wave guide plates 411 guide the abutting rollers 410, causing the moving plate 41 to move horizontally and reciprocally along the width of the quantitative hopper 33. This causes the mixing area of ​​the mixing rod 43 to effectively overlap with the vibration area of ​​the vibrator 42, further avoiding the phenomenon of water separation and sedimentation in local positions, ensuring the homogeneity of concrete, and preventing the problem of excessive water separation as residual material discharge.

[0029] Example 3: Please refer to Figures 1-10 As shown, the present invention also proposes a method for using an intelligent reverse sampling device for concrete mixer trucks with residual material recovery function, including the following steps: Step 1: The external concrete test block management system sends a sampling signal to the mixer truck driver. At the same time, the sampling device is activated. The concrete sampling trolley 31 moves to the designated position below the receiving hopper 22. Meanwhile, the mixer truck driver stops the mixer truck at the designated position and unloads the concrete into the receiving hopper 22 by reversing at the lowest speed. When the sound control device on the receiving hopper 22 alarms, the mixer truck driver immediately stops the mixer truck from reversing and leaves the sampling position. The concrete in the receiving hopper 22 is filled into the quantitative hopper 33 on the sampling trolley 31. When designing the concrete test block management system, the performance indicators of the mixer truck are input into the software system to calculate the time for each reverse sampling. The calculation starts from the time the mixer truck driver starts the reverse unloading and continues until the reverse sampling time ends. The control system will then issue an alarm message to notify the driver to stop the reverse, ensuring that the unloading amount is basically consistent each time the reverse is performed. Step 2: After the concrete fills the quantitative hopper 33, the excess concrete automatically overflows into the residual material collection hopper 24 through the shorter triangular overflow block 35, and is then collected in the residual material collection box 23 through the residual material pipe. During the overflow of residual material, the motor drives the lead screw to rotate forward and backward. The lead screw, together with two sets of sliding rods, drives the moving frame 4 to move back and forth on the top of the quantitative hopper 33. The moving frame 4 carries multiple vibrating rods 42 that extend into the quantitative hopper 33 and moves synchronously. The vibrating rods 42 are energized and vibrate to vibrate and level the concrete falling into the quantitative hopper 33, thereby accelerating the overflow and recovery speed of the residual material. Step 3: While vibrating and leveling the material, the spur gear 48 is moved horizontally by the moving frame 4. Combined with the meshing of the spur gear 48 and the toothed plate 49, the spur gear 48 drives the spline shaft 45 to rotate. The spline shaft 45, in conjunction with the meshing bevel gear 1 46 and bevel gear 2 44, drives multiple stirring rods 43 to rotate. This continuously and slowly mixes the vibrating concrete in the quantitative hopper 33, preventing the concrete from separating and settling due to vibration. This would prevent excessive loss of separated water during the residual material recovery process, which could lead to deviations in the quality test results after the concrete test blocks have solidified. In addition, by moving the moving frame 4 horizontally along the length of the quantitative hopper 33, the contact rollers 410 on both sides of the moving plate 41 move between the two sets of wave guide plates 411. The wave protrusions and concaves on the wave guide plates 411 guide the contact rollers 410, causing the moving plate 41 to move horizontally back and forth synchronously along the width of the quantitative hopper 33. This causes the stirring area of ​​the stirring rod 43 to effectively overlap with the vibration area of ​​the vibrating rod 42, further avoiding the phenomenon of water separation and sedimentation in local positions. Step 4: For quantitative sampling of different sample amounts, the movable rod of the electric push rod 34 retracts, causing the auxiliary crossbeam 36 to deflect downwards. The linkage rod 37 on the auxiliary crossbeam 36, together with the linkage plate 38, drives the triangular overflow block 35 to descend. The support beam 39 limits the downward deflection of the quantitative hopper 33. Combined with the spring 312 at the bottom of the limit sliders 311 on both sides of the triangular overflow block 35, this further increases the stability of the quantitative hopper 33 when it is placed horizontally. The electric push rod 34 stops when the triangular overflow block 35 descends to the specified height. The quantitative hopper 33 and the triangular overflow block 35 adopt the barrel theory of three sides being high and one side being low. When the concrete reaches the low side position, the amount of concrete in the quantitative hopper 33 is the sample amount. The excess amount enters the quantitative hopper 33 and overflows from the low side for recycling. After the overflow of residual material is recovered, the movable rod of the electric push rod 34 extends and moves, causing the triangular overflow block 35 to rise, so that the top height of the triangular overflow block 35 is higher than the height of the concrete liquid surface, until the inclined surface of the triangular overflow block 35 touches the comb side of the comb flow limiting plate 313, and the electric push rod 34 stops. This prevents the quantitative concrete in the quantitative hopper 33 from partially overflowing during the movement of the sampling trolley 31, which would cause the sampling deviation, and also prevents the sticky concrete on the inclined surface of the triangular overflow block 35 from falling to various places. Step 5: The sampling trolley 31 transports the quantitative hopper 33 to the filling station. The movable rod of its electric push rod 34 extends further, causing the quantitative hopper 33 to deflect upward around the fixed rod 32, so that all the concrete is discharged into the external filling device. Then the electric push rod 34 drives the quantitative hopper 33 to deflect back to the horizontal state. After unloading, the sampling trolley 31 returns to the cleaning area of ​​the gantry cleaning machine 11, and the electric push rod 34 tilts the quantitative hopper 33 again. At this time, the concrete test block management system sends a cleaning signal, and the gantry cleaning machine 11 starts to clean the inside of the quantitative hopper 33. After the sampling trolley 31 moves away from under the receiving hopper 22, cleaning water is injected into the spray pipe and then sprayed out from multiple nozzles to clean the inside of the receiving hopper 22. After cleaning, the quantitative hopper 33 resets and deflects for the second time, and the sampling trolley 31 returns to the starting position, waiting to perform the next sampling task. This completes one semi-automatic quantitative sampling process.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A smart reverse sampling device for concrete mixer trucks with residual material recycling function, comprising a base (1), characterized in that, The base (1) is provided with a receiving unit (2) for guiding concrete material and recycling residual material, and a quantitative sampling unit (3) suitable for different sample quantities. The receiving unit (2) includes a mounting frame (21) fixedly connected to the top of the base (1), and a receiving hopper (22) is fixedly installed on the mounting frame (21). The quantitative sampling unit (3) includes a sampling trolley (31) located at the top of the base (1). A fixing rod (32) is fixedly installed on one side of the top of the sampling trolley (31), and a quantitative hopper (33) is rotatably installed on the fixing rod (32). An electric push rod (34) is installed between the quantitative hopper (33) and the sampling trolley (31). A triangular overflow block (35) is provided on one side of the quantitative hopper (33). An auxiliary crossbeam (36) is rotatably connected to the fixed rod (32), and linkage rods (37) are symmetrically fixedly connected to both sides of the free end of the auxiliary crossbeam (36). A linkage plate (38) is fixedly connected to the bottom of the triangular overflow block (35) and slidably connected to the corresponding linkage rod (37). The electric push rod (34) is hinged between the auxiliary crossbeam (36) and the sampling trolley (31). A support beam (39) that abuts against the bottom of the quantitative hopper (33) is fixedly connected to the top of the sampling trolley (31). The quantitative hopper (33) is symmetrically fixedly connected to L-shaped plates (310) on both sides. The triangular overflow block (35) is fixedly connected to a limiting slider (311) that is slidably connected to the corresponding L-shaped plate (310). A spring (312) is fixedly installed between the bottom of the limiting slider (311) and the L-shaped plate (310). The quantitative hopper (33) is fixedly connected to a comb-shaped flow limiting plate (313) that abuts against the inclined surface of the triangular overflow block (35).

2. The intelligent reverse sampling device for concrete mixer trucks with residual material recovery function according to claim 1, characterized in that, A collection box (23) is movably placed at the bottom of the base (1), and a waste material collection hopper (24) is fixedly connected to one side of the mounting frame (21), and a waste material pipe extending into the collection box (23) is fixedly connected to the bottom of the waste material collection hopper (24).

3. The intelligent reverse sampling device for concrete mixer trucks with residual material recovery function according to claim 1, characterized in that, The top of the receiving hopper (22) is fixedly connected to a water spray pipe, and multiple nozzles for cleaning the receiving hopper (22) are installed on the water spray pipe. A gantry cleaning machine (11) is installed on the top of the base (1) and on one side of the mounting frame (21).

4. The intelligent reverse sampling device for concrete mixer trucks with residual material recovery function according to claim 1, characterized in that, The top of the quantitative hopper (33) is provided with a movable frame (4), and a movable plate (41) is slidably installed on the movable frame (4). Multiple vibrating rods (42) are installed at the bottom of the movable plate (41). Both sides of the quantitative hopper (33) are fixedly connected with sliding rods that are slidably connected to the movable frame (4). A screw threadedly connected to the movable frame (4) is rotatably installed on the quantitative hopper (33), and a motor that drives the screw thread to rotate is installed by bolts.

5. The intelligent reverse sampling device for concrete mixer trucks with residual material recovery function according to claim 4, characterized in that, Multiple stirring rods (43) are rotatably connected to the movable plate (41), and multiple vibrating rods (42) are located between two adjacent sets of stirring rods (43). A second bevel gear (44) is fixedly connected to the stirring rod (43). A spline shaft (45) is rotatably installed on the top of the movable plate (41), and a first bevel gear (46) that meshes with the corresponding second bevel gear (44) is fixedly connected to the spline shaft (45).

6. The intelligent reverse sampling device for concrete mixer trucks with residual material recovery function according to claim 5, characterized in that, The movable frame (4) is rotatably connected to two sets of bushings (47) that are slidably connected to the spline shaft (45), and a spur gear (48) is fixedly installed on the bushing (47). The quantitative hopper (33) is equipped with toothed plates (49) that mesh with the corresponding spur gear (48) on both sides.

7. The intelligent reverse sampling device for concrete mixer trucks with residual material recovery function according to claim 6, characterized in that, Both ends of the movable plate (41) are rotatably mounted with abutting rollers (410), and both sets of toothed plates (49) are fixedly mounted with wave guide plates (411). The wave side of the wave guide plate (411) rolls against the corresponding abutting roller (410), and the wave protrusions of the two sets of wave guide plates (411) are staggered.

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