Mixing device of concrete mixing truck

Abstract

The invention relates to the technical field of concrete mixing, in particular to a mixing device of a concrete mixing truck, which comprises a placing table, a mixing tank for containing and mixing concrete, a guide frame, a defoaming mechanism and a grinding mechanism, in the defoaming mechanism, the concrete falls down through a grating plate after falling into the guide frame, and the grinding mechanism is used for grinding the concrete; bubbles in the concrete can be broken when making contact with the grating plate, meanwhile, the bubbles which cannot be broken can be further punctured through reciprocating movement of the oblique inserting rods, the bubbles in the concrete are effectively eliminated through the series of operation, and therefore the problem that the bubbles exist in the concrete is fundamentally solved. And in the grinding mechanism, the concrete agglomerates screened by the inclined inserting rod enter a grinding frame through a collecting frame to be crushed and ground, the ground concrete agglomerates are conveyed into the stirring tank again through a conveying barrel, and it is guaranteed that the concrete agglomerates cannot enter a construction area and can be recycled again at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of concrete mixing, and in particular to a mixing device of a concrete mixer truck. Background Art

[0002] A concrete mixer truck is a special vehicle used to transport and mix cast-in-place concrete, usually used at construction sites. It consists of core components such as a bucket truck and a mixer. The mixer truck is transported to the required location through the walking and steering system, and the concrete is evenly mixed and stirred through the mixing mechanism.

[0003] The bucket truck is used to load concrete during transportation. In addition, it can also stir the concrete during transportation to ensure the uniformity of the concrete. For example, a mixing device for a concrete mixer truck with announcement number CN221112363U relates to the field of concrete mixing technology. The mixing tank is stably fixed on the vehicle body through a supporting structure, and the drain port is no longer sealed through the compression of a reset spring. The water flow filtered by the filter can pass through the drain port smoothly. Through this series of actions, it is ensured that excessive water can be discharged in time during the mixing process to prevent the concrete from becoming diluted, thereby ensuring the quality of the concrete and meeting the use requirements.

[0004] However, the above-mentioned prior art still has some defects when mixing concrete during transportation:

[0005] 1. Since gas may be mixed into the concrete during mixing, which may lead to bubbles inside the concrete, the above patent application does not remove the bubbles inside the concrete when mixing the concrete during transportation, resulting in a decrease in the strength of the concrete during subsequent solidification. At the same time, the existing bubbles will enter water and chloride ions, affecting its corrosion resistance. Although the concrete will be rolled during the subsequent construction process, the impact of bubbles on the concrete is not fundamentally eliminated.

[0006] 2. In the actual operation process, due to the raw material ratio and insufficient mixing, there may be incomplete contact between aggregate and water in the concrete, resulting in the possibility of lumps in the concrete, and the lumps cannot be completely eliminated during the mixing process. Although the concrete with lumps can be crushed by rolling in subsequent construction, the surface area of ​​the crushed aggregate increases and is partially dispersed in the concrete, which cannot be fully bound by the cementitious material, resulting in a decrease in the internal density of the concrete, thereby affecting the strength and durability of the concrete.

[0007] Based on this, and in accordance with the above-mentioned viewpoints, there is still room for improvement in the prior art regarding the method of mixing concrete evenly during transportation. Summary of the invention

[0008] In order to solve the above-mentioned technical problems, the present application provides a mixing device of a concrete mixer truck, which adopts the following technical solution: a mixing device of a concrete mixer truck, comprising a mixing tank for containing and mixing concrete, the mixing tank being provided with a connecting protrusion, a guide frame being detachably mounted with an inclined arrangement on the connecting protrusion, a defoaming mechanism being arranged on the guide frame, and a grinding mechanism being mounted on one end of the guide frame away from the mixing tank.

[0009] The defoaming mechanism comprises:

[0010] The grid plate is slidably arranged at the inner bottom of the guide frame.

[0011] The oblique insertion rods are provided in multiple groups and are evenly distributed along the length direction of the guide frame, and each group of oblique insertion rods is evenly arranged along the width direction of the guide frame, and the oblique insertion rods reciprocate along the inclination direction of the guide frame.

[0012] Preferably, the grinding mechanism comprises:

[0013] The collecting frame is arranged at the bottom of the guide frame and is used for receiving the concrete lumps inside the guide frame.

[0014] The grinding frame is arranged at the bottom of the collecting frame and is connected with the collecting frame. A grinding roller is installed inside the grinding frame along the length direction of the collecting frame through a bearing.

[0015] The transition frame is installed at the bottom of the grinding frame and is used to receive the concrete agglomerates ground by the grinding frame. A conveying cylinder connected to the grinding frame is installed at one end of the transition frame away from the grinding frame.

[0016] Preferably, a rotating shaft extending along the height of the conveying cylinder is installed at the inner bottom of the conveying cylinder via a bearing, and a spiral blade is installed on the rotating shaft.

[0017] Preferably, two groups of exhaust pipes symmetrically distributed along the length direction of the collecting frame are installed inside, each group of exhaust pipes is evenly distributed along the width direction of the collecting frame, and exhaust holes are opened on the exhaust pipes.

[0018] Preferably, the inner wall of the guide frame is symmetrically provided with reciprocating plates along its width direction, and the reciprocating plates slide back and forth along the length direction of the guide frame, and a plurality of toggle rods evenly distributed along the length direction of the reciprocating plates are installed between the two reciprocating plates.

[0019] Preferably, a connecting block is slidably provided on either side of the guide frame along its length direction, and the connecting block is installed on the grille plate, a driving shaft is installed on the side of the guide frame close to the connecting block through a bearing, a gear is installed on the driving shaft, and a rack plate meshing with the gear is installed on the connecting block.

[0020] Preferably, a U-shaped frame is slidably arranged on one side of the guiding frame close to the gear. The vertical section of the U-shaped frame located inside the guiding frame is installed on the reciprocating plate on the same side as it, and a second rack plate meshing with the gear is installed on the vertical section of the U-shaped frame located outside the guiding frame.

[0021] Preferably, vertical frames are symmetrically installed on both tops of the guiding frame along its length direction. A lifting plate is slidably arranged on the common vertical frames on the same side of the guiding frame along the height direction of the vertical frames, and a lifting connecting plate corresponding to each group of inclined insertion rods is commonly installed between the lifting plates. An elastic telescopic rod is installed on one side of the guiding frame away from the gear, and the telescopic end of the elastic telescopic rod is connected to the corresponding lifting plate.

[0022] Preferably, a fixed connecting block is installed on the lifting plate close to the gear, and a traction rope is installed on the fixed connecting block. One end of the traction rope away from the fixed connecting block is wound around the driving shaft.

[0023] Preferably, the inclined insertion rod penetrates through the corresponding lifting connecting plate, a through groove is opened inside the inclined insertion rod, and a shielding plate for blocking concrete from entering the through groove is also installed on the lifting connecting plate.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. In the defoaming mechanism designed by the present invention, after the concrete falls into the guiding frame and then drops downward through the grating plate, the air bubbles in the concrete will be broken when contacting the grating plate, and the reciprocating movement of the inclined insertion rod will further pierce the air bubbles that have not been broken, effectively eliminating the air bubbles inside the concrete and fundamentally solving the problem of air bubbles existing inside the concrete.

[0026] 2. In the grinding mechanism designed by the present invention, the concrete lumps screened by the inclined insertion rod enter the grinding frame through the collecting frame for crushing and grinding. The ground concrete lumps are re-fed into the mixing tank through the conveying cylinder, ensuring that the concrete lumps will not enter the construction area and can be recycled at the same time.

[0027] 3. The staggered sliding cooperation between the拨动杆 (it seems there is a mistake here, maybe it should be a specific component name) and the grating plate designed by the present invention can accelerate the downward fall of the concrete and can also squeeze the air bubbles, reducing the possibility of air bubbles existing inside the concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0029] Figure 2 is a three-dimensional installation structural schematic diagram among the reciprocating plate, the拨动板 (it seems there is a mistake here, maybe it should be a specific component name), and the grating plate of the present invention.

[0030] Figure 3It is a schematic diagram of the three-dimensional installation structure between the guide frame and the oblique insertion rods etc. of the present invention.

[0031] Figure 4 The present invention Figure 3 A partial enlarged view of point A.

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure among the oblique insertion rod, the fixed connecting block and the traction rope etc. of the present invention.

[0033] Figure 6 The present invention Figure 5 A partial enlarged view of point B.

[0034] Figure 7 It is a schematic diagram of the three-dimensional installation structure between the collecting frame, the grinding frame and the grinding roller of the present invention.

[0035] Figure 8 The present invention Figure 7 A partial enlarged view of point C.

[0036] Explanation of the reference numerals: 1. agitating tank; 11. connecting protrusion; 2. guide frame; 21. reciprocating plate; 22. toggle rod; 23. connecting block; 24. driving shaft; 25. gear; 26. rack plate one; 27. profile frame; 28. rack plate two; 29. ​​vertical frame; 291. vertical frame; 292. lifting connecting plate; 293. elastic telescopic rod; 294. fixed connecting block; 295. traction rope; 3. defoaming mechanism; 31. grille plate; 32. oblique insertion rod; 321. through slot; 322. guard plate; 4. grinding mechanism; 41. collecting frame; 411. air pipe; 42. grinding frame; 43. grinding roller; 44. transition frame; 45. conveying cylinder; 451. rotating shaft; 452. spiral blade. DETAILED DESCRIPTION

[0037] The following is combined with Figures 1 to 8 This application is described in further detail.

[0038] The embodiment of the present application discloses a mixing device of a concrete mixer truck, which can fundamentally remove bubbles in concrete, crush and grind concrete lumps in the concrete and recycle them for reuse.

[0039] Embodiment 1:

[0040] Reference Figure 1 and Figure 2 A mixing device of a concrete mixer truck comprises a mixing tank 1 for containing and mixing concrete, the mixing tank 1 is provided with a connecting protrusion 11, an inclined guide frame 2 is detachably mounted on the connecting protrusion 11, a defoaming mechanism 3 is arranged on the guide frame 2, and a grinding mechanism 4 is mounted on one end of the guide frame 2 away from the mixing tank 1.

[0041] The defoaming mechanism 3 comprises:

[0042] The grid plate 31 is slidably disposed on the inner bottom of the guide frame 2 .

[0043] The oblique insertion rods 32 are provided in multiple groups and are evenly distributed along the length direction of the guide frame 2 , and each group of oblique insertion rods 32 is evenly arranged along the width direction of the guide frame 2 , and the oblique insertion rods 32 reciprocate along the tilt direction of the guide frame 2 .

[0044] After the concrete falls into the guide frame 2, it falls downward through the grid plate 31. The bubbles in the concrete will be broken when it contacts the grid plate 31. At the same time, the reciprocating movement of the obliquely inserted rod 32 will further break the bubbles that have not broken. This series of operations effectively eliminates the bubbles inside the concrete, thereby fundamentally solving the problem of bubbles inside the concrete.

[0045] The inner wall of the guide frame 2 is symmetrically provided with reciprocating plates 21 along its width direction, and the reciprocating plates 21 reciprocate along the length direction of the guide frame 2 , and a plurality of toggle rods 22 evenly distributed along the length direction of the reciprocating plates 21 are installed between the two reciprocating plates 21 .

[0046] When the mixer truck is transporting concrete, the guide frame 2 is removed from the connecting protrusion 11. During operation, when the mixer truck enters the construction area and unloads, the guide frame 2 is reinstalled on the connecting protrusion 11, and the concrete inside the mixing tank 1 is discharged outward and falls into the guide frame 2. At this time, the concrete falls downward through the gap between the grid plates 31. During the falling process, the concrete bubbles come into contact with the grid plates 31, and the bubbles are broken by the force, so that the bubbles in the concrete can be removed through the grid plates 31.

[0047] In addition, in order to prevent concrete from piling up at a certain place on the guide frame 2, the guide frame 2 designed in the present invention is tilted from left to right, and the grid plate 31 always swings back and forth along the length direction of the guide frame 2 during the concrete pouring process. During the shaking process, the concrete dropped on the grid plate 31 can be shaken evenly so that the concrete can be spread flat on the grid plate 31. At the same time, the grid plate 31 during the shaking process can give external force to the concrete, so that the concrete can smoothly pass through the gap part of the grid plate 31, thereby avoiding the possibility that the concrete stays on the grid plate 31 for too long and falls from the side of the guide frame 2 away from the mixing tank 1.

[0048] In the above-mentioned process of spreading concrete by the shaking of the grid plate 31 itself, the concrete is passively spread on the grid plate 31. In order to further increase the possibility of full contact between the concrete and the grid plate 31 so that the concrete can smoothly fall from the gap between the grid plate 31, the reciprocating plate 21 provided by the present invention drives the toggle rod 22 to move back and forth during the reciprocating movement along the length of the guide frame 2. The reciprocating movement of the toggle rod 22 can actively spread the concrete on the grid plate 31 through external force, thereby ensuring that the concrete is more fully in contact with the grid plate 31. At the same time, during the reciprocating movement of the toggle rod 22, external force can be applied to the bubbles in the concrete to make the bubbles burst more fully.

[0049] Since the reciprocating plate 21 and the grille plate 31 both require external force when they move back and forth along the length direction of the guide frame 2, the drive shaft 24 provided by the present invention can provide driving force for the reciprocating plate 21 and the grille plate 31 at the same time. Specifically, a connecting block 23 is slidably provided on any side of the guide frame 2 along its length direction, and the connecting block 23 is installed on the grille plate 31. A driving shaft 24 is installed on the side of the guide frame 2 close to the connecting block 23 through a bearing, a gear 25 is installed on the driving shaft 24, and a rack plate 26 meshing with the gear 25 is installed on the connecting block 23.

[0050] A shaped frame 27 is slidably provided on one side of the guide frame 2 close to the gear 25. The vertical section of the shaped frame 27 located inside the guide frame 2 is installed on the reciprocating plate 21 on the same side thereof, and the vertical section of the shaped frame 27 located outside the guide frame 2 is installed with a rack plate 28 meshing with the gear 25.

[0051] During specific operation, the drive shaft 24 is connected to the output shaft of an external drive motor (not shown in the figure), and the external drive motor is started. When the output shaft of the external drive motor rotates, it drives the drive shaft 24 to rotate, and the gear 25 is driven to rotate during the rotation of the drive shaft 24. During the rotation of the drive shaft 24, the gear 25 drives the connecting block 23 to move through the rack plate 26, and the grille plate 31 is synchronously driven to move during the movement of the connecting block 23. When the drive shaft 24 rotates a certain number of times, the output shaft of the external drive motor is reversed, and the drive shaft 24 is driven to reverse during the reversal of the output shaft of the external drive motor, and then during the reversal of the drive shaft 24, the connecting block 23 is driven to move in the opposite direction through the engagement of the gear 25 and the rack plate 26, and the grille plate 31 is synchronously driven to move during the reverse movement of the connecting block 23. When the drive shaft 24 is reversed a certain number of times, the above action is repeated, and then during the intermittent forward and reverse rotation of the drive shaft 24, the grille plate 31 is driven to reciprocate through the cooperation of the gear 25 and the rack plate 26.

[0052] During the intermittent forward and reverse rotation of the driving shaft 24, the gear 25 and the rack plate 28 cooperate with each other to drive the mold frame 27 to move back and forth, and then the mold frame 27 drives the toggle rod 22 to move back and forth through the reciprocating plate 21.

[0053] Therefore, the reciprocating plate 21 and the grid plate 31 can be driven to reciprocate simultaneously through the cooperation of a single driving force and the driving shaft 24 .

[0054] In addition, the gear 25 cooperates with the rack plate 1 26 and the rack plate 2 28 to make the reciprocating plate 21 and the grid plate 31 always move back and forth alternately, so that the force distribution of the concrete on the grid plate 31 is uniform and disordered, thereby improving the stability and durability of the internal structure of the concrete and accelerating the removal of bubbles.

[0055] In order to further reduce the use of external drive, the lifting plate 291 provided by the present invention can also apply driving force through the driving shaft 24 during the up and down reciprocating movement. Specifically, vertical frames 29 are symmetrically installed on the top of both sides of the guide frame 2 along its length direction, and the vertical frames 29 on the same side of the guide frame 2 are commonly installed with lifting plates 291 that are slidably arranged along the height direction of the vertical frames 29, and lifting connecting plates 292 corresponding to each group of oblique rods 32 are commonly installed between the lifting plates 291. An elastic telescopic rod 293 is installed on the side of the guide frame 2 away from the gear 25, and the telescopic end of the elastic telescopic rod 293 is connected to the lifting plate 291 on the corresponding side.

[0056] A fixed connecting block 294 is installed on the lifting plate 291 close to the gear 25 , and a traction rope 295 is installed on the fixed connecting block 294 . One end of the traction rope 295 away from the fixed connecting block 294 is wound around the driving shaft 24 .

[0057] During specific operation, the traction rope 295 is wound around the driving shaft 24 during forward rotation. During the process of the traction rope 295 being wound around the driving shaft 24, the lifting plate 291 is driven to move downward along the vertical frame 29 through the fixed connecting block 294. During the downward movement of the corresponding side lifting plate 291, the lifting connecting plate 292 cooperates with the lifting plate 291 on the opposite side to drive the oblique insertion rod 32 to move downward. At this time, the oblique insertion rod 32 is inserted into the concrete, and the elastic telescopic rod 293 is compressed. When the driving shaft 24 is reversed, the traction rope 295 is released. At this time, the elastic telescopic rod 293 drives the lifting connecting plate 292 to reset through the lifting plate 291. During the resetting process of the lifting connecting plate 292, the oblique insertion rod 32 is simultaneously driven to reset. The driving shaft 24 repeats the above steps, and the lifting plate 291 cooperates with the lifting connecting plate 292 to drive the oblique insertion rod 32 to be reciprocated in the concrete.

[0058] During the reciprocating insertion of the oblique rods 32, bubbles in the concrete can be punctured to reduce the impact of bubbles in the concrete on its subsequent use. At the same time, during the reciprocating movement of the oblique rods 32, a downward force can be applied to the concrete lumps, so that each group of adjacent oblique rods 32 can screen the concrete, that is, concrete leaks out from each group of adjacent oblique rods 32, and the concrete lumps are driven by the oblique rods 32 to move to the side of the guide frame 2 away from the mixing tank 1.

[0059] By providing the grid plate 31, the concrete lumps are subjected to the effect of inertia during the reciprocating shaking process, and each time the oblique rods 32 push the concrete lumps downward for a certain displacement, the grid plate 31 can continue to drive the concrete lumps downward for a certain displacement with the assistance of the grid plate 31, thereby ensuring that the next group of oblique rods 32 can continue to push the concrete lumps pushed down by the previous group of oblique rods 32 further downward, effectively avoiding the problem that each group of adjacent oblique rods 32 only drives the concrete lumps to remain relatively still at a certain fixed position of the grid plate 31.

[0060] Its working principle is that the grid plate 31 provides additional driving force when the concrete mass moves downward, so that the concrete mass can continue to move, and the oblique rod 32 periodically applies pressure to the concrete mass, causing the concrete mass to gradually move downward in a predetermined direction, thereby achieving the purpose of continuously and evenly applying pressure and pushing the concrete mass.

[0061] That is, first the obliquely inserted rod 32 applies a thrust to the concrete block to make it start to move, then the grid plate 31 uses its own inertia to drive the concrete block to continue to move downward for a distance, and then the new obliquely inserted rod 32 applies a thrust again to push the concrete block, and this cycle is repeated to ensure that the concrete block can continue to move downward along the predetermined path.

[0062] In addition, for some relatively loose concrete lumps inside the concrete, the toggle rod 22 and the oblique insertion rod 32 cooperate with each other to move back and forth to break up the concrete lumps, and the broken concrete lumps are moved back into the concrete by the toggle rod 22, that is, the concrete lumps can be processed in the process of removing bubbles.

[0063] The obliquely inserted rod 32 penetrates the corresponding lifting connecting plate 292 , a through slot 321 is provided inside the obliquely inserted rod 32 , and a guard plate 322 for preventing concrete from entering the through slot 321 is also installed on the lifting connecting plate 292 .

[0064] The diameter of the through groove 321 is small enough, that is, only air can pass through it, but concrete and water cannot pass through it. During operation, when the oblique rod 32 encounters larger bubbles when entering the concrete, the gas inside the bubbles can be discharged outward through the through groove 321, thereby accelerating the discharge rate of the bubbles inside the concrete. The guard plate 322 can block the falling concrete to prevent the concrete from falling on the top of the oblique rod 32 and causing the through groove 321 to be blocked, thereby ensuring the permeability of the through groove 321.

[0065] Embodiment 2:

[0066] Reference Figure 1 , Figure 2 , Figure 4 and Figure 7Based on the first embodiment, the present invention can grind and recycle the hard concrete agglomerates inside. Specifically, the grinding mechanism 4 includes:

[0067] The collecting frame 41 is disposed at the bottom of the guide frame 2 and is used for receiving the concrete lumps inside the guide frame 2 .

[0068] The grinding frame 42 is arranged at the bottom of the collecting frame 41 and penetrates the collecting frame 41 . A grinding roller 43 is installed inside the grinding frame 42 along the length direction of the collecting frame 41 through a bearing.

[0069] The transition frame 44 is installed at the bottom of the grinding frame 42 and is used to receive the concrete agglomerates ground by the grinding frame 42 . A conveying cylinder 45 is installed at one end of the transition frame 44 away from the grinding frame 42 and is connected to the grinding frame 42 .

[0070] A rotating shaft 451 extending along the height of the conveying cylinder 45 is installed at the bottom of the conveying cylinder 45 via a bearing, and a spiral blade 452 is installed on the rotating shaft 451 .

[0071] When unloading, a pipe (not shown in the figure) is installed on the top of the conveying cylinder 45, and the end of the pipe away from the conveying cylinder 45 is placed inside the mixing tank 1. During specific operation, the concrete lumps moved by the obliquely inserted rod 32 fall into the collecting frame 41, and the concrete lumps fall into the grinding frame 42 through the collecting frame 41. At this time, the grinding rollers 43 are driven by an external driving force (motor, etc.) to rotate in opposite directions. During the rotation of the grinding rollers 43, the harder concrete lumps inside can be ground and crushed to obtain concrete powder. The concrete powder enters the conveying cylinder 45 through the grinding frame 42. At this time, the rotating shaft 451 is driven to rotate by an external driving force (motor, etc.). During the rotation of the rotating shaft 451, the spiral blades 452 are driven to transport the concrete powder at the bottom of the conveying cylinder 45 upward. Finally, the concrete powder re-enters the mixing tank 1 through the pipe for re-mixing.

[0072] The grinding roller 43 can then process the hard concrete lumps inside, and the ground concrete lumps are re-sent into the mixing tank 1 through the conveying cylinder 45, ensuring that the concrete lumps will not enter the construction area and can be recycled.

[0073] Two groups of exhaust pipes 411 symmetrically distributed along the length direction of the collecting frame 41 are installed inside the collecting frame 41 . Each group of exhaust pipes 411 is evenly distributed along the width direction of the collecting frame 41 , and exhaust holes are opened on the exhaust pipes 411 .

[0074] When the concrete agglomerates enter the collecting frame 41, gas is pumped into the exhaust pipe 411 through an external air pump, and the gas escapes from the exhaust hole through the exhaust pipe 411 to form an airflow. The airflow can blow off the wet concrete on the surface of the concrete agglomerates during the flow, so as to avoid the concrete agglomerates being mixed with the wet concrete during the crushing process, resulting in the concrete powder and the wet concrete sticking to the grinding roller 43, which affects the grinding effect of the concrete agglomerates.

[0075] The implementation principle of the present invention is:

[0076] (1): Reinstall the guide frame 2 on the connecting protrusion 11, discharge the concrete inside the mixing tank 1 to the outside and drop it into the guide frame 2. At this time, the concrete falls downward through the gap between the grid plate 31. During the falling process, the concrete bubbles come into contact with the grid plate 31, and the bubbles are broken by the force. Then, the bubbles in the concrete can be removed through the grid plate 31.

[0077] (2): During the concrete pouring process, the grid plate 31 always swings back and forth along the length direction of the guide frame 2. During the shaking process, the concrete dropped on the grid plate 31 can be shaken evenly so that the concrete can be spread flat on the grid plate 31. At the same time, the grid plate 31 during the shaking process can apply external force to the concrete so that the concrete can pass smoothly through the gap part of the grid plate 31.

[0078] (3): The reciprocating plate 21 drives the toggle rod 22 to reciprocate during the reciprocating movement along the length of the guide frame 2. The reciprocating movement of the toggle rod 22 can be actively flattened on the grid plate 31 by external force.

[0079] (4): The oblique rods 32 can puncture bubbles in the concrete during the reciprocating insertion process, and at the same time, can give downward force to the concrete lumps during the reciprocating movement of the oblique rods 32, so that each group of adjacent oblique rods 32 can screen the concrete, that is, concrete leaks out from each group of adjacent oblique rods 32, and the concrete lumps are driven by the oblique rods 32 to move to the side of the guide frame 2 away from the mixing tank 1.

[0080] (5): When unloading, a pipe (not shown in the figure) is installed on the top of the conveying cylinder 45, and the end of the pipe away from the conveying cylinder 45 is placed inside the mixing tank 1. During operation, the concrete lumps moved by the oblique rod 32 fall into the collecting frame 41, and the concrete lumps fall into the grinding frame 42 through the collecting frame 41. At this time, the grinding rollers 43 are driven by an external driving force (motor, etc.) to rotate in opposite directions. During the rotation of the grinding rollers 43, the harder concrete lumps inside can be ground and crushed to obtain concrete powder. The concrete powder enters the conveying cylinder 45 through the grinding frame 42. At this time, the rotating shaft 451 is driven by an external driving force (motor, etc.) to rotate. During the rotation of the rotating shaft 451, the spiral blades 452 are driven to transport the concrete powder at the bottom of the conveying cylinder 45 upward. Finally, the concrete powder re-enters the mixing tank 1 through the pipe for re-mixing.

[0081] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mixing device of a concrete mixer truck, comprising a mixing tank (1) for containing and mixing concrete, characterized in that: The stirring tank (1) is provided with a connecting protrusion (11), a guide frame (2) arranged in an inclined manner is detachably mounted on the connecting protrusion (11), a defoaming mechanism (3) is arranged on the guide frame (2), a grinding mechanism (4) is mounted on one end of the guide frame (2) away from the stirring tank (1), and the defoaming mechanism (3) comprises: A grid plate (31) is slidably arranged on the inner bottom of the guide frame (2); The oblique insertion rods (32) are arranged in multiple groups and are evenly distributed along the length direction of the guide frame (2). Each group of oblique insertion rods (32) is evenly arranged along the width direction of the guide frame (2). The oblique insertion rods (32) reciprocate along the inclination direction of the guide frame (2).

2. The stirring device of a concrete mixer truck according to claim 1, characterized in that: The grinding mechanism (4) comprises: A collecting frame (41) is arranged at the bottom of the guide frame (2) and is used to receive concrete lumps inside the guide frame (2); A grinding frame (42) is arranged at the bottom of the collecting frame (41) and is connected to the collecting frame (41). A grinding roller (43) is installed inside the grinding frame (42) along the length direction of the collecting frame (41) via a bearing; The transition frame (44) is installed at the bottom of the grinding frame (42) and is used to receive the concrete agglomerates ground by the grinding frame (42). A conveying cylinder (45) connected to the transition frame (44) is installed at one end away from the grinding frame (42).

3. The stirring device of a concrete mixer truck according to claim 2, characterized in that: A rotating shaft (451) extending along the height of the conveying cylinder (45) is installed on the inner bottom of the conveying cylinder (45) via a bearing, and a spiral blade (452) is installed on the rotating shaft (451).

4. The stirring device of a concrete mixer truck according to claim 2, characterized in that: Two groups of exhaust pipes (411) symmetrically distributed along the length direction of the collection frame (41) are installed inside the collection frame (41), each group of exhaust pipes (411) is evenly distributed along the width direction of the collection frame (41), and exhaust holes are opened on the exhaust pipes (411).

5. The stirring device of a concrete mixer truck according to claim 1, characterized in that: The inner wall of the guide frame (2) is symmetrically provided with reciprocating plates (21) along its width direction, and the reciprocating plates (21) slide back and forth along the length direction of the guide frame (2), and a plurality of toggle rods (22) evenly distributed along the length direction of the reciprocating plates (21) are installed between the two reciprocating plates (21).

6. The stirring device of a concrete mixer truck according to claim 1, characterized in that: A connecting block (23) is slidably provided on any side of the guide frame (2) along its length direction, and the connecting block (23) is mounted on the grid plate (31). A driving shaft (24) is mounted on the side of the guide frame (2) close to the connecting block (23) through a bearing, a gear (25) is mounted on the driving shaft (24), and a rack plate (26) meshing with the gear (25) is mounted on the connecting block (23).

7. The stirring device of a concrete mixer truck according to claim 6, characterized in that: A shaped frame (27) is slidably provided on one side of the guide frame (2) close to the gear (25); a vertical section of the shaped frame (27) located inside the guide frame (2) is mounted on a reciprocating plate (21) on the same side thereof; a rack plate 2 (28) meshing with the gear (25) is mounted on a vertical section of the shaped frame (27) located outside the guide frame (2).

8. The stirring device of a concrete mixer truck according to claim 1, characterized in that: Vertical frames (29) are symmetrically mounted on the tops of both sides of the guide frame (2) along the length direction thereof; a lifting plate (291) is mounted on the vertical frames (29) on the same side of the guide frame (2) and is slidably mounted along the height direction of the vertical frames (29); and a lifting connecting plate (292) corresponding to each group of obliquely inserted rods (32) is mounted between the lifting plates (291); an elastic telescopic rod (293) is mounted on the side of the guide frame (2) away from the gear (25); and the telescopic end of the elastic telescopic rod (293) is connected to the lifting plate (291) on the corresponding side.

9. The stirring device of a concrete mixer truck according to claim 8, characterized in that: A fixed connecting block (294) is installed on the lifting plate (291) close to the gear (25), a traction rope (295) is installed on the fixed connecting block (294), and one end of the traction rope (295) away from the fixed connecting block (294) is wound around the driving shaft (24).

10. The stirring device of a concrete mixer truck according to claim 8, characterized in that: The obliquely inserted rod (32) penetrates the corresponding lifting connecting plate (292), a through slot (321) is provided inside the obliquely inserted rod (32), and a guard plate (322) for preventing concrete from entering the through slot (321) is also installed on the lifting connecting plate (292).

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